diff options
Diffstat (limited to 'test/syscalls/linux')
131 files changed, 7605 insertions, 2540 deletions
diff --git a/test/syscalls/linux/BUILD b/test/syscalls/linux/BUILD index 84a8eb76c..064ce8429 100644 --- a/test/syscalls/linux/BUILD +++ b/test/syscalls/linux/BUILD @@ -6,6 +6,19 @@ package( licenses = ["notice"], ) +exports_files( + [ + "socket.cc", + "socket_inet_loopback.cc", + "socket_ip_loopback_blocking.cc", + "socket_ip_tcp_loopback.cc", + "socket_ipv4_udp_unbound_loopback.cc", + "tcp_socket.cc", + "udp_socket.cc", + ], + visibility = ["//:sandbox"], +) + cc_binary( name = "sigaltstack_check", testonly = 1, @@ -480,6 +493,21 @@ cc_binary( ) cc_binary( + name = "connect_external_test", + testonly = 1, + srcs = ["connect_external.cc"], + linkstatic = 1, + deps = [ + ":socket_test_util", + "//test/util:file_descriptor", + "//test/util:fs_util", + "//test/util:test_main", + "//test/util:test_util", + "@com_google_googletest//:gtest", + ], +) + +cc_binary( name = "creat_test", testonly = 1, srcs = ["creat.cc"], @@ -655,6 +683,7 @@ cc_binary( "//test/util:thread_util", "@com_google_absl//absl/strings", "@com_google_absl//absl/synchronization", + "@com_google_absl//absl/types:optional", "@com_google_googletest//:gtest", ], ) @@ -727,6 +756,7 @@ cc_binary( "//test/util:eventfd_util", "//test/util:multiprocess_util", "//test/util:posix_error", + "//test/util:save_util", "//test/util:temp_path", "//test/util:test_util", "//test/util:timer_util", @@ -1552,11 +1582,14 @@ cc_binary( srcs = ["proc_net.cc"], linkstatic = 1, deps = [ + ":socket_test_util", "//test/util:capability_util", "//test/util:file_descriptor", "//test/util:fs_util", "//test/util:test_main", "//test/util:test_util", + "@com_google_absl//absl/strings", + "@com_google_absl//absl/time", "@com_google_googletest//:gtest", ], ) @@ -1776,7 +1809,6 @@ cc_binary( name = "readv_socket_test", testonly = 1, srcs = [ - "file_base.h", "readv_common.cc", "readv_common.h", "readv_socket.cc", @@ -1824,6 +1856,22 @@ cc_binary( ) cc_binary( + name = "rseq_test", + testonly = 1, + srcs = ["rseq.cc"], + data = ["//test/syscalls/linux/rseq"], + linkstatic = 1, + deps = [ + "//test/syscalls/linux/rseq:lib", + "//test/util:logging", + "//test/util:multiprocess_util", + "//test/util:test_main", + "//test/util:test_util", + "@com_google_googletest//:gtest", + ], +) + +cc_binary( name = "rtsignal_test", testonly = 1, srcs = ["rtsignal.cc"], @@ -2122,6 +2170,8 @@ cc_library( deps = [ ":socket_test_util", "//test/util:test_util", + "//test/util:thread_util", + "@com_google_absl//absl/time", "@com_google_googletest//:gtest", ], alwayslink = 1, @@ -2214,6 +2264,7 @@ cc_library( ":ip_socket_test_util", ":socket_test_util", "//test/util:test_util", + "@com_google_absl//absl/memory", "@com_google_googletest//:gtest", ], alwayslink = 1, @@ -2657,6 +2708,20 @@ cc_binary( ) cc_binary( + name = "socket_netlink_test", + testonly = 1, + srcs = ["socket_netlink.cc"], + linkstatic = 1, + deps = [ + ":socket_test_util", + "//test/util:file_descriptor", + "//test/util:test_main", + "//test/util:test_util", + "@com_google_googletest//:gtest", + ], +) + +cc_binary( name = "socket_netlink_route_test", testonly = 1, srcs = ["socket_netlink_route.cc"], @@ -2673,6 +2738,21 @@ cc_binary( ], ) +cc_binary( + name = "socket_netlink_uevent_test", + testonly = 1, + srcs = ["socket_netlink_uevent.cc"], + linkstatic = 1, + deps = [ + ":socket_netlink_util", + ":socket_test_util", + "//test/util:file_descriptor", + "//test/util:test_main", + "//test/util:test_util", + "@com_google_googletest//:gtest", + ], +) + # These socket tests are in a library because the test cases are shared # across several test build targets. cc_library( @@ -3195,8 +3275,6 @@ cc_binary( testonly = 1, srcs = ["tcp_socket.cc"], linkstatic = 1, - # FIXME(b/135470853) - tags = ["flaky"], deps = [ ":socket_test_util", "//test/util:file_descriptor", @@ -3301,11 +3379,15 @@ cc_binary( ], ) -cc_binary( - name = "udp_socket_test", +cc_library( + name = "udp_socket_test_cases", testonly = 1, - srcs = ["udp_socket.cc"], - linkstatic = 1, + srcs = [ + "udp_socket_test_cases.cc", + ] + select_for_linux([ + "udp_socket_errqueue_test_case.cc", + ]), + hdrs = ["udp_socket_test_cases.h"], deps = [ ":socket_test_util", ":unix_domain_socket_test_util", @@ -3316,6 +3398,17 @@ cc_binary( "@com_google_absl//absl/time", "@com_google_googletest//:gtest", ], + alwayslink = 1, +) + +cc_binary( + name = "udp_socket_test", + testonly = 1, + srcs = ["udp_socket.cc"], + linkstatic = 1, + deps = [ + ":udp_socket_test_cases", + ], ) cc_binary( @@ -3632,3 +3725,24 @@ cc_binary( "@com_google_googletest//:gtest", ], ) + +cc_binary( + name = "xattr_test", + testonly = 1, + srcs = [ + "file_base.h", + "xattr.cc", + ], + linkstatic = 1, + deps = [ + "//test/util:capability_util", + "//test/util:file_descriptor", + "//test/util:fs_util", + "//test/util:posix_error", + "//test/util:temp_path", + "//test/util:test_main", + "//test/util:test_util", + "@com_google_absl//absl/strings", + "@com_google_googletest//:gtest", + ], +) diff --git a/test/syscalls/linux/accept_bind.cc b/test/syscalls/linux/accept_bind.cc index 1122ea240..e08c578f0 100644 --- a/test/syscalls/linux/accept_bind.cc +++ b/test/syscalls/linux/accept_bind.cc @@ -14,9 +14,10 @@ #include <stdio.h> #include <sys/un.h> + #include <algorithm> #include <vector> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" @@ -140,6 +141,18 @@ TEST_P(AllSocketPairTest, Connect) { SyscallSucceeds()); } +TEST_P(AllSocketPairTest, ConnectNonListening) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), + sockets->first_addr_size()), + SyscallSucceeds()); + + ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), + sockets->first_addr_size()), + SyscallFailsWithErrno(ECONNREFUSED)); +} + TEST_P(AllSocketPairTest, ConnectToFilePath) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); diff --git a/test/syscalls/linux/accept_bind_stream.cc b/test/syscalls/linux/accept_bind_stream.cc index b6cdb3f4f..4857f160b 100644 --- a/test/syscalls/linux/accept_bind_stream.cc +++ b/test/syscalls/linux/accept_bind_stream.cc @@ -14,9 +14,10 @@ #include <stdio.h> #include <sys/un.h> + #include <algorithm> #include <vector> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/aio.cc b/test/syscalls/linux/aio.cc index b27d4e10a..a33daff17 100644 --- a/test/syscalls/linux/aio.cc +++ b/test/syscalls/linux/aio.cc @@ -129,7 +129,7 @@ TEST_F(AIOTest, BasicWrite) { // aio implementation uses aio_ring. gVisor doesn't and returns all zeroes. // Linux implements aio_ring, so skip the zeroes check. // - // TODO(b/65486370): Remove when gVisor implements aio_ring. + // TODO(gvisor.dev/issue/204): Remove when gVisor implements aio_ring. auto ring = reinterpret_cast<struct aio_ring*>(ctx_); auto magic = IsRunningOnGvisor() ? 0 : AIO_RING_MAGIC; EXPECT_EQ(ring->magic, magic); diff --git a/test/syscalls/linux/bind.cc b/test/syscalls/linux/bind.cc index de8cca53b..9547c4ab2 100644 --- a/test/syscalls/linux/bind.cc +++ b/test/syscalls/linux/bind.cc @@ -17,7 +17,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/chmod.cc b/test/syscalls/linux/chmod.cc index 7e918b9b2..a06b5cfd6 100644 --- a/test/syscalls/linux/chmod.cc +++ b/test/syscalls/linux/chmod.cc @@ -16,6 +16,7 @@ #include <sys/stat.h> #include <sys/types.h> #include <unistd.h> + #include <string> #include "gtest/gtest.h" diff --git a/test/syscalls/linux/chroot.cc b/test/syscalls/linux/chroot.cc index 498c45f16..04bc2d7b9 100644 --- a/test/syscalls/linux/chroot.cc +++ b/test/syscalls/linux/chroot.cc @@ -19,12 +19,12 @@ #include <sys/stat.h> #include <syscall.h> #include <unistd.h> + #include <string> #include <vector> #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/str_cat.h" #include "absl/strings/str_split.h" #include "absl/strings/string_view.h" diff --git a/test/syscalls/linux/clock_gettime.cc b/test/syscalls/linux/clock_gettime.cc index c9e3ed6b2..7f6015049 100644 --- a/test/syscalls/linux/clock_gettime.cc +++ b/test/syscalls/linux/clock_gettime.cc @@ -14,6 +14,7 @@ #include <pthread.h> #include <sys/time.h> + #include <cerrno> #include <cstdint> #include <ctime> @@ -55,11 +56,6 @@ void spin_ns(int64_t ns) { // Test that CLOCK_PROCESS_CPUTIME_ID is a superset of CLOCK_THREAD_CPUTIME_ID. TEST(ClockGettime, CputimeId) { - // TODO(b/128871825,golang.org/issue/10958): Test times out when there is a - // small number of core because one goroutine starves the others. - printf("CPUS: %d\n", std::thread::hardware_concurrency()); - SKIP_IF(std::thread::hardware_concurrency() <= 2); - constexpr int kNumThreads = 13; // arbitrary absl::Duration spin_time = absl::Seconds(1); diff --git a/test/syscalls/linux/concurrency.cc b/test/syscalls/linux/concurrency.cc index 4e0a13f8b..00b96b34a 100644 --- a/test/syscalls/linux/concurrency.cc +++ b/test/syscalls/linux/concurrency.cc @@ -13,6 +13,7 @@ // limitations under the License. #include <signal.h> + #include <atomic> #include "gtest/gtest.h" diff --git a/test/syscalls/linux/connect_external.cc b/test/syscalls/linux/connect_external.cc new file mode 100644 index 000000000..bfe1da82e --- /dev/null +++ b/test/syscalls/linux/connect_external.cc @@ -0,0 +1,163 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <errno.h> +#include <stdlib.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <sys/un.h> + +#include <string> +#include <tuple> + +#include "gtest/gtest.h" +#include "test/syscalls/linux/socket_test_util.h" +#include "test/util/file_descriptor.h" +#include "test/util/fs_util.h" +#include "test/util/test_util.h" + +// This file contains tests specific to connecting to host UDS managed outside +// the sandbox / test. +// +// A set of ultity sockets will be created externally in $TEST_UDS_TREE and +// $TEST_UDS_ATTACH_TREE for these tests to interact with. + +namespace gvisor { +namespace testing { + +namespace { + +struct ProtocolSocket { + int protocol; + std::string name; +}; + +// Parameter is (socket root dir, ProtocolSocket). +using GoferStreamSeqpacketTest = + ::testing::TestWithParam<std::tuple<std::string, ProtocolSocket>>; + +// Connect to a socket and verify that write/read work. +// +// An "echo" socket doesn't work for dgram sockets because our socket is +// unnamed. The server thus has no way to reply to us. +TEST_P(GoferStreamSeqpacketTest, Echo) { + std::string env; + ProtocolSocket proto; + std::tie(env, proto) = GetParam(); + + char *val = getenv(env.c_str()); + ASSERT_NE(val, nullptr); + std::string root(val); + + FileDescriptor sock = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, proto.protocol, 0)); + + std::string socket_path = JoinPath(root, proto.name, "echo"); + + struct sockaddr_un addr = {}; + addr.sun_family = AF_UNIX; + memcpy(addr.sun_path, socket_path.c_str(), socket_path.length()); + + ASSERT_THAT(connect(sock.get(), reinterpret_cast<struct sockaddr *>(&addr), + sizeof(addr)), + SyscallSucceeds()); + + constexpr int kBufferSize = 64; + char send_buffer[kBufferSize]; + memset(send_buffer, 'a', sizeof(send_buffer)); + + ASSERT_THAT(WriteFd(sock.get(), send_buffer, sizeof(send_buffer)), + SyscallSucceedsWithValue(sizeof(send_buffer))); + + char recv_buffer[kBufferSize]; + ASSERT_THAT(ReadFd(sock.get(), recv_buffer, sizeof(recv_buffer)), + SyscallSucceedsWithValue(sizeof(recv_buffer))); + ASSERT_EQ(0, memcmp(send_buffer, recv_buffer, sizeof(send_buffer))); +} + +// It is not possible to connect to a bound but non-listening socket. +TEST_P(GoferStreamSeqpacketTest, NonListening) { + std::string env; + ProtocolSocket proto; + std::tie(env, proto) = GetParam(); + + char *val = getenv(env.c_str()); + ASSERT_NE(val, nullptr); + std::string root(val); + + FileDescriptor sock = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, proto.protocol, 0)); + + std::string socket_path = JoinPath(root, proto.name, "nonlistening"); + + struct sockaddr_un addr = {}; + addr.sun_family = AF_UNIX; + memcpy(addr.sun_path, socket_path.c_str(), socket_path.length()); + + ASSERT_THAT(connect(sock.get(), reinterpret_cast<struct sockaddr *>(&addr), + sizeof(addr)), + SyscallFailsWithErrno(ECONNREFUSED)); +} + +INSTANTIATE_TEST_SUITE_P( + StreamSeqpacket, GoferStreamSeqpacketTest, + ::testing::Combine( + // Test access via standard path and attach point. + ::testing::Values("TEST_UDS_TREE", "TEST_UDS_ATTACH_TREE"), + ::testing::Values(ProtocolSocket{SOCK_STREAM, "stream"}, + ProtocolSocket{SOCK_SEQPACKET, "seqpacket"}))); + +// Parameter is socket root dir. +using GoferDgramTest = ::testing::TestWithParam<std::string>; + +// Connect to a socket and verify that write works. +// +// An "echo" socket doesn't work for dgram sockets because our socket is +// unnamed. The server thus has no way to reply to us. +TEST_P(GoferDgramTest, Null) { + std::string env = GetParam(); + char *val = getenv(env.c_str()); + ASSERT_NE(val, nullptr); + std::string root(val); + + FileDescriptor sock = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_DGRAM, 0)); + + std::string socket_path = JoinPath(root, "dgram/null"); + + struct sockaddr_un addr = {}; + addr.sun_family = AF_UNIX; + memcpy(addr.sun_path, socket_path.c_str(), socket_path.length()); + + ASSERT_THAT(connect(sock.get(), reinterpret_cast<struct sockaddr *>(&addr), + sizeof(addr)), + SyscallSucceeds()); + + constexpr int kBufferSize = 64; + char send_buffer[kBufferSize]; + memset(send_buffer, 'a', sizeof(send_buffer)); + + ASSERT_THAT(WriteFd(sock.get(), send_buffer, sizeof(send_buffer)), + SyscallSucceedsWithValue(sizeof(send_buffer))); +} + +INSTANTIATE_TEST_SUITE_P(Dgram, GoferDgramTest, + // Test access via standard path and attach point. + ::testing::Values("TEST_UDS_TREE", + "TEST_UDS_ATTACH_TREE")); + +} // namespace + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/exceptions.cc b/test/syscalls/linux/exceptions.cc index 370e85166..3d564e720 100644 --- a/test/syscalls/linux/exceptions.cc +++ b/test/syscalls/linux/exceptions.cc @@ -22,6 +22,23 @@ namespace gvisor { namespace testing { +// Default value for the x87 FPU control word. See Intel SDM Vol 1, Ch 8.1.5 +// "x87 FPU Control Word". +constexpr uint16_t kX87ControlWordDefault = 0x37f; + +// Mask for the divide-by-zero exception. +constexpr uint16_t kX87ControlWordDiv0Mask = 1 << 2; + +// Default value for the SSE control register (MXCSR). See Intel SDM Vol 1, Ch +// 11.6.4 "Initialization of SSE/SSE3 Extensions". +constexpr uint32_t kMXCSRDefault = 0x1f80; + +// Mask for the divide-by-zero exception. +constexpr uint32_t kMXCSRDiv0Mask = 1 << 9; + +// Flag for a pending divide-by-zero exception. +constexpr uint32_t kMXCSRDiv0Flag = 1 << 2; + void inline Halt() { asm("hlt\r\n"); } void inline SetAlignmentCheck() { @@ -107,6 +124,170 @@ TEST(ExceptionTest, DivideByZero) { ::testing::KilledBySignal(SIGFPE), ""); } +// By default, x87 exceptions are masked and simply return a default value. +TEST(ExceptionTest, X87DivideByZeroMasked) { + int32_t quotient; + int32_t value = 1; + int32_t divisor = 0; + asm("fildl %[value]\r\n" + "fidivl %[divisor]\r\n" + "fistpl %[quotient]\r\n" + : [ quotient ] "=m"(quotient) + : [ value ] "m"(value), [ divisor ] "m"(divisor)); + + EXPECT_EQ(quotient, INT32_MIN); +} + +// When unmasked, division by zero raises SIGFPE. +TEST(ExceptionTest, X87DivideByZeroUnmasked) { + // See above. + struct sigaction sa = {}; + sa.sa_handler = SIG_DFL; + auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); + + EXPECT_EXIT( + { + // Clear the divide by zero exception mask. + constexpr uint16_t kControlWord = + kX87ControlWordDefault & ~kX87ControlWordDiv0Mask; + + int32_t quotient; + int32_t value = 1; + int32_t divisor = 0; + asm volatile( + "fldcw %[cw]\r\n" + "fildl %[value]\r\n" + "fidivl %[divisor]\r\n" + "fistpl %[quotient]\r\n" + : [ quotient ] "=m"(quotient) + : [ cw ] "m"(kControlWord), [ value ] "m"(value), + [ divisor ] "m"(divisor)); + }, + ::testing::KilledBySignal(SIGFPE), ""); +} + +// Pending exceptions in the x87 status register are not clobbered by syscalls. +TEST(ExceptionTest, X87StatusClobber) { + // See above. + struct sigaction sa = {}; + sa.sa_handler = SIG_DFL; + auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); + + EXPECT_EXIT( + { + // Clear the divide by zero exception mask. + constexpr uint16_t kControlWord = + kX87ControlWordDefault & ~kX87ControlWordDiv0Mask; + + int32_t quotient; + int32_t value = 1; + int32_t divisor = 0; + asm volatile( + "fildl %[value]\r\n" + "fidivl %[divisor]\r\n" + // Exception is masked, so it does not occur here. + "fistpl %[quotient]\r\n" + + // SYS_getpid placed in rax by constraint. + "syscall\r\n" + + // Unmask exception. The syscall didn't clobber the pending + // exception, so now it can be raised. + // + // N.B. "a floating-point exception will be generated upon execution + // of the *next* floating-point instruction". + "fldcw %[cw]\r\n" + "fwait\r\n" + : [ quotient ] "=m"(quotient) + : [ value ] "m"(value), [ divisor ] "m"(divisor), "a"(SYS_getpid), + [ cw ] "m"(kControlWord) + : "rcx", "r11"); + }, + ::testing::KilledBySignal(SIGFPE), ""); +} + +// By default, SSE exceptions are masked and simply return a default value. +TEST(ExceptionTest, SSEDivideByZeroMasked) { + uint32_t status; + int32_t quotient; + int32_t value = 1; + int32_t divisor = 0; + asm("cvtsi2ssl %[value], %%xmm0\r\n" + "cvtsi2ssl %[divisor], %%xmm1\r\n" + "divss %%xmm1, %%xmm0\r\n" + "cvtss2sil %%xmm0, %[quotient]\r\n" + : [ quotient ] "=r"(quotient), [ status ] "=r"(status) + : [ value ] "r"(value), [ divisor ] "r"(divisor) + : "xmm0", "xmm1"); + + EXPECT_EQ(quotient, INT32_MIN); +} + +// When unmasked, division by zero raises SIGFPE. +TEST(ExceptionTest, SSEDivideByZeroUnmasked) { + // See above. + struct sigaction sa = {}; + sa.sa_handler = SIG_DFL; + auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); + + EXPECT_EXIT( + { + // Clear the divide by zero exception mask. + constexpr uint32_t kMXCSR = kMXCSRDefault & ~kMXCSRDiv0Mask; + + int32_t quotient; + int32_t value = 1; + int32_t divisor = 0; + asm volatile( + "ldmxcsr %[mxcsr]\r\n" + "cvtsi2ssl %[value], %%xmm0\r\n" + "cvtsi2ssl %[divisor], %%xmm1\r\n" + "divss %%xmm1, %%xmm0\r\n" + "cvtss2sil %%xmm0, %[quotient]\r\n" + : [ quotient ] "=r"(quotient) + : [ mxcsr ] "m"(kMXCSR), [ value ] "r"(value), + [ divisor ] "r"(divisor) + : "xmm0", "xmm1"); + }, + ::testing::KilledBySignal(SIGFPE), ""); +} + +// Pending exceptions in the SSE status register are not clobbered by syscalls. +TEST(ExceptionTest, SSEStatusClobber) { + uint32_t mxcsr; + int32_t quotient; + int32_t value = 1; + int32_t divisor = 0; + asm("cvtsi2ssl %[value], %%xmm0\r\n" + "cvtsi2ssl %[divisor], %%xmm1\r\n" + "divss %%xmm1, %%xmm0\r\n" + // Exception is masked, so it does not occur here. + "cvtss2sil %%xmm0, %[quotient]\r\n" + + // SYS_getpid placed in rax by constraint. + "syscall\r\n" + + // Intel SDM Vol 1, Ch 10.2.3.1 "SIMD Floating-Point Mask and Flag Bits": + // "If LDMXCSR or FXRSTOR clears a mask bit and sets the corresponding + // exception flag bit, a SIMD floating-point exception will not be + // generated as a result of this change. The unmasked exception will be + // generated only upon the execution of the next SSE/SSE2/SSE3 instruction + // that detects the unmasked exception condition." + // + // Though ambiguous, empirical evidence indicates that this means that + // exception flags set in the status register will never cause an + // exception to be raised; only a new exception condition will do so. + // + // Thus here we just check for the flag itself rather than trying to raise + // the exception. + "stmxcsr %[mxcsr]\r\n" + : [ quotient ] "=r"(quotient), [ mxcsr ] "+m"(mxcsr) + : [ value ] "r"(value), [ divisor ] "r"(divisor), "a"(SYS_getpid) + : "xmm0", "xmm1", "rcx", "r11"); + + EXPECT_TRUE(mxcsr & kMXCSRDiv0Flag); +} + TEST(ExceptionTest, IOAccessFault) { // See above. struct sigaction sa = {}; diff --git a/test/syscalls/linux/exec.cc b/test/syscalls/linux/exec.cc index 4947271ba..b5e0a512b 100644 --- a/test/syscalls/linux/exec.cc +++ b/test/syscalls/linux/exec.cc @@ -33,6 +33,7 @@ #include "absl/strings/str_split.h" #include "absl/strings/string_view.h" #include "absl/synchronization/mutex.h" +#include "absl/types/optional.h" #include "test/util/file_descriptor.h" #include "test/util/fs_util.h" #include "test/util/multiprocess_util.h" @@ -46,33 +47,25 @@ namespace testing { namespace { -constexpr char kBasicWorkload[] = "exec_basic_workload"; -constexpr char kExitScript[] = "exit_script"; -constexpr char kStateWorkload[] = "exec_state_workload"; -constexpr char kProcExeWorkload[] = "exec_proc_exe_workload"; -constexpr char kAssertClosedWorkload[] = "exec_assert_closed_workload"; -constexpr char kPriorityWorkload[] = "priority_execve"; - -std::string WorkloadPath(absl::string_view binary) { - std::string full_path; - char* test_src = getenv("TEST_SRCDIR"); - if (test_src) { - full_path = JoinPath(test_src, "__main__/test/syscalls/linux", binary); - } - - TEST_CHECK(full_path.empty() == false); - return full_path; -} +constexpr char kBasicWorkload[] = "test/syscalls/linux/exec_basic_workload"; +constexpr char kExitScript[] = "test/syscalls/linux/exit_script"; +constexpr char kStateWorkload[] = "test/syscalls/linux/exec_state_workload"; +constexpr char kProcExeWorkload[] = + "test/syscalls/linux/exec_proc_exe_workload"; +constexpr char kAssertClosedWorkload[] = + "test/syscalls/linux/exec_assert_closed_workload"; +constexpr char kPriorityWorkload[] = "test/syscalls/linux/priority_execve"; constexpr char kExit42[] = "--exec_exit_42"; constexpr char kExecWithThread[] = "--exec_exec_with_thread"; constexpr char kExecFromThread[] = "--exec_exec_from_thread"; -// Runs filename with argv and checks that the exit status is expect_status and -// that stderr contains expect_stderr. -void CheckOutput(const std::string& filename, const ExecveArray& argv, - const ExecveArray& envv, int expect_status, - const std::string& expect_stderr) { +// Runs file specified by dirfd and pathname with argv and checks that the exit +// status is expect_status and that stderr contains expect_stderr. +void CheckExecHelper(const absl::optional<int32_t> dirfd, + const std::string& pathname, const ExecveArray& argv, + const ExecveArray& envv, const int flags, + int expect_status, const std::string& expect_stderr) { int pipe_fds[2]; ASSERT_THAT(pipe2(pipe_fds, O_CLOEXEC), SyscallSucceeds()); @@ -110,8 +103,15 @@ void CheckOutput(const std::string& filename, const ExecveArray& argv, // CloexecEventfd depend on that not happening. }; - auto kill = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(filename, argv, envv, remap_stderr, &child, &execve_errno)); + Cleanup kill; + if (dirfd.has_value()) { + kill = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(*dirfd, pathname, argv, + envv, flags, remap_stderr, + &child, &execve_errno)); + } else { + kill = ASSERT_NO_ERRNO_AND_VALUE( + ForkAndExec(pathname, argv, envv, remap_stderr, &child, &execve_errno)); + } ASSERT_EQ(0, execve_errno); @@ -140,6 +140,21 @@ void CheckOutput(const std::string& filename, const ExecveArray& argv, EXPECT_TRUE(absl::StrContains(output, expect_stderr)) << output; } +void CheckExec(const std::string& filename, const ExecveArray& argv, + const ExecveArray& envv, int expect_status, + const std::string& expect_stderr) { + CheckExecHelper(/*dirfd=*/absl::optional<int32_t>(), filename, argv, envv, + /*flags=*/0, expect_status, expect_stderr); +} + +void CheckExecveat(const int32_t dirfd, const std::string& pathname, + const ExecveArray& argv, const ExecveArray& envv, + const int flags, int expect_status, + const std::string& expect_stderr) { + CheckExecHelper(absl::optional<int32_t>(dirfd), pathname, argv, envv, flags, + expect_status, expect_stderr); +} + TEST(ExecTest, EmptyPath) { int execve_errno; ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec("", {}, {}, nullptr, &execve_errno)); @@ -147,73 +162,72 @@ TEST(ExecTest, EmptyPath) { } TEST(ExecTest, Basic) { - CheckOutput(WorkloadPath(kBasicWorkload), {WorkloadPath(kBasicWorkload)}, {}, - ArgEnvExitStatus(0, 0), - absl::StrCat(WorkloadPath(kBasicWorkload), "\n")); + CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload)}, {}, + ArgEnvExitStatus(0, 0), + absl::StrCat(RunfilePath(kBasicWorkload), "\n")); } TEST(ExecTest, OneArg) { - CheckOutput(WorkloadPath(kBasicWorkload), {WorkloadPath(kBasicWorkload), "1"}, - {}, ArgEnvExitStatus(1, 0), - absl::StrCat(WorkloadPath(kBasicWorkload), "\n1\n")); + CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload), "1"}, {}, + ArgEnvExitStatus(1, 0), + absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n")); } TEST(ExecTest, FiveArg) { - CheckOutput(WorkloadPath(kBasicWorkload), - {WorkloadPath(kBasicWorkload), "1", "2", "3", "4", "5"}, {}, - ArgEnvExitStatus(5, 0), - absl::StrCat(WorkloadPath(kBasicWorkload), "\n1\n2\n3\n4\n5\n")); + CheckExec(RunfilePath(kBasicWorkload), + {RunfilePath(kBasicWorkload), "1", "2", "3", "4", "5"}, {}, + ArgEnvExitStatus(5, 0), + absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n2\n3\n4\n5\n")); } TEST(ExecTest, OneEnv) { - CheckOutput(WorkloadPath(kBasicWorkload), {WorkloadPath(kBasicWorkload)}, - {"1"}, ArgEnvExitStatus(0, 1), - absl::StrCat(WorkloadPath(kBasicWorkload), "\n1\n")); + CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload)}, {"1"}, + ArgEnvExitStatus(0, 1), + absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n")); } TEST(ExecTest, FiveEnv) { - CheckOutput(WorkloadPath(kBasicWorkload), {WorkloadPath(kBasicWorkload)}, - {"1", "2", "3", "4", "5"}, ArgEnvExitStatus(0, 5), - absl::StrCat(WorkloadPath(kBasicWorkload), "\n1\n2\n3\n4\n5\n")); + CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload)}, + {"1", "2", "3", "4", "5"}, ArgEnvExitStatus(0, 5), + absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n2\n3\n4\n5\n")); } TEST(ExecTest, OneArgOneEnv) { - CheckOutput(WorkloadPath(kBasicWorkload), - {WorkloadPath(kBasicWorkload), "arg"}, {"env"}, - ArgEnvExitStatus(1, 1), - absl::StrCat(WorkloadPath(kBasicWorkload), "\narg\nenv\n")); + CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload), "arg"}, + {"env"}, ArgEnvExitStatus(1, 1), + absl::StrCat(RunfilePath(kBasicWorkload), "\narg\nenv\n")); } TEST(ExecTest, InterpreterScript) { - CheckOutput(WorkloadPath(kExitScript), {WorkloadPath(kExitScript), "25"}, {}, - ArgEnvExitStatus(25, 0), ""); + CheckExec(RunfilePath(kExitScript), {RunfilePath(kExitScript), "25"}, {}, + ArgEnvExitStatus(25, 0), ""); } // Everything after the path in the interpreter script is a single argument. TEST(ExecTest, InterpreterScriptArgSplit) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " foo bar"), 0755)); - CheckOutput(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), - absl::StrCat(link.path(), "\nfoo bar\n", script.path(), "\n")); + CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), + absl::StrCat(link.path(), "\nfoo bar\n", script.path(), "\n")); } // Original argv[0] is replaced with the script path. TEST(ExecTest, InterpreterScriptArgvZero) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path()), 0755)); - CheckOutput(script.path(), {"REPLACED"}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script.path(), "\n")); + CheckExec(script.path(), {"REPLACED"}, {}, ArgEnvExitStatus(1, 0), + absl::StrCat(link.path(), "\n", script.path(), "\n")); } // Original argv[0] is replaced with the script path, exactly as passed to @@ -221,7 +235,7 @@ TEST(ExecTest, InterpreterScriptArgvZero) { TEST(ExecTest, InterpreterScriptArgvZeroRelative) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path()), 0755)); @@ -230,62 +244,62 @@ TEST(ExecTest, InterpreterScriptArgvZeroRelative) { auto script_relative = ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(cwd, script.path())); - CheckOutput(script_relative, {"REPLACED"}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script_relative, "\n")); + CheckExec(script_relative, {"REPLACED"}, {}, ArgEnvExitStatus(1, 0), + absl::StrCat(link.path(), "\n", script_relative, "\n")); } // argv[0] is added as the script path, even if there was none. TEST(ExecTest, InterpreterScriptArgvZeroAdded) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path()), 0755)); - CheckOutput(script.path(), {}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script.path(), "\n")); + CheckExec(script.path(), {}, {}, ArgEnvExitStatus(1, 0), + absl::StrCat(link.path(), "\n", script.path(), "\n")); } // A NUL byte in the script line ends parsing. TEST(ExecTest, InterpreterScriptArgNUL) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " foo", std::string(1, '\0'), "bar"), 0755)); - CheckOutput(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), - absl::StrCat(link.path(), "\nfoo\n", script.path(), "\n")); + CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), + absl::StrCat(link.path(), "\nfoo\n", script.path(), "\n")); } // Trailing whitespace following interpreter path is ignored. TEST(ExecTest, InterpreterScriptTrailingWhitespace) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " "), 0755)); - CheckOutput(script.path(), {script.path()}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script.path(), "\n")); + CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(1, 0), + absl::StrCat(link.path(), "\n", script.path(), "\n")); } // Multiple whitespace characters between interpreter and arg allowed. TEST(ExecTest, InterpreterScriptArgWhitespace) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kBasicWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " foo"), 0755)); - CheckOutput(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), - absl::StrCat(link.path(), "\nfoo\n", script.path(), "\n")); + CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), + absl::StrCat(link.path(), "\nfoo\n", script.path(), "\n")); } TEST(ExecTest, InterpreterScriptNoPath) { @@ -302,7 +316,7 @@ TEST(ExecTest, InterpreterScriptNoPath) { TEST(ExecTest, ExecFn) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kStateWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kStateWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " PrintExecFn"), @@ -314,21 +328,21 @@ TEST(ExecTest, ExecFn) { auto script_relative = ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(cwd, script.path())); - CheckOutput(script_relative, {script_relative}, {}, ArgEnvExitStatus(0, 0), - absl::StrCat(script_relative, "\n")); + CheckExec(script_relative, {script_relative}, {}, ArgEnvExitStatus(0, 0), + absl::StrCat(script_relative, "\n")); } TEST(ExecTest, ExecName) { - std::string path = WorkloadPath(kStateWorkload); + std::string path = RunfilePath(kStateWorkload); - CheckOutput(path, {path, "PrintExecName"}, {}, ArgEnvExitStatus(0, 0), - absl::StrCat(Basename(path).substr(0, 15), "\n")); + CheckExec(path, {path, "PrintExecName"}, {}, ArgEnvExitStatus(0, 0), + absl::StrCat(Basename(path).substr(0, 15), "\n")); } TEST(ExecTest, ExecNameScript) { // Symlink through /tmp to ensure the path is short enough. TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", WorkloadPath(kStateWorkload))); + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kStateWorkload))); TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( GetAbsoluteTestTmpdir(), @@ -336,21 +350,21 @@ TEST(ExecTest, ExecNameScript) { std::string script_path = script.path(); - CheckOutput(script_path, {script_path}, {}, ArgEnvExitStatus(0, 0), - absl::StrCat(Basename(script_path).substr(0, 15), "\n")); + CheckExec(script_path, {script_path}, {}, ArgEnvExitStatus(0, 0), + absl::StrCat(Basename(script_path).substr(0, 15), "\n")); } // execve may be called by a multithreaded process. TEST(ExecTest, WithSiblingThread) { - CheckOutput("/proc/self/exe", {"/proc/self/exe", kExecWithThread}, {}, - W_EXITCODE(42, 0), ""); + CheckExec("/proc/self/exe", {"/proc/self/exe", kExecWithThread}, {}, + W_EXITCODE(42, 0), ""); } // execve may be called from a thread other than the leader of a multithreaded // process. TEST(ExecTest, FromSiblingThread) { - CheckOutput("/proc/self/exe", {"/proc/self/exe", kExecFromThread}, {}, - W_EXITCODE(42, 0), ""); + CheckExec("/proc/self/exe", {"/proc/self/exe", kExecFromThread}, {}, + W_EXITCODE(42, 0), ""); } TEST(ExecTest, NotFound) { @@ -382,13 +396,13 @@ TEST(ExecStateTest, HandlerReset) { ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); ExecveArray args = { - WorkloadPath(kStateWorkload), + RunfilePath(kStateWorkload), "CheckSigHandler", absl::StrCat(SIGUSR1), absl::StrCat(absl::Hex(reinterpret_cast<uintptr_t>(SIG_DFL))), }; - CheckOutput(WorkloadPath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); + CheckExec(RunfilePath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); } // Ignored signal dispositions are not reset. @@ -398,13 +412,13 @@ TEST(ExecStateTest, IgnorePreserved) { ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); ExecveArray args = { - WorkloadPath(kStateWorkload), + RunfilePath(kStateWorkload), "CheckSigHandler", absl::StrCat(SIGUSR1), absl::StrCat(absl::Hex(reinterpret_cast<uintptr_t>(SIG_IGN))), }; - CheckOutput(WorkloadPath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); + CheckExec(RunfilePath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); } // Signal masks are not reset on exec @@ -415,12 +429,12 @@ TEST(ExecStateTest, SignalMask) { ASSERT_THAT(sigprocmask(SIG_BLOCK, &s, nullptr), SyscallSucceeds()); ExecveArray args = { - WorkloadPath(kStateWorkload), + RunfilePath(kStateWorkload), "CheckSigBlocked", absl::StrCat(SIGUSR1), }; - CheckOutput(WorkloadPath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); + CheckExec(RunfilePath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); } // itimers persist across execve. @@ -448,7 +462,7 @@ TEST(ExecStateTest, ItimerPreserved) { } }; - std::string filename = WorkloadPath(kStateWorkload); + std::string filename = RunfilePath(kStateWorkload); ExecveArray argv = { filename, "CheckItimerEnabled", @@ -472,10 +486,10 @@ TEST(ExecStateTest, ItimerPreserved) { TEST(ProcSelfExe, ChangesAcrossExecve) { // See exec_proc_exe_workload for more details. We simply // assert that the /proc/self/exe link changes across execve. - CheckOutput(WorkloadPath(kProcExeWorkload), - {WorkloadPath(kProcExeWorkload), - ASSERT_NO_ERRNO_AND_VALUE(ProcessExePath(getpid()))}, - {}, W_EXITCODE(0, 0), ""); + CheckExec(RunfilePath(kProcExeWorkload), + {RunfilePath(kProcExeWorkload), + ASSERT_NO_ERRNO_AND_VALUE(ProcessExePath(getpid()))}, + {}, W_EXITCODE(0, 0), ""); } TEST(ExecTest, CloexecNormalFile) { @@ -484,20 +498,20 @@ TEST(ExecTest, CloexecNormalFile) { const FileDescriptor fd_closed_on_exec = ASSERT_NO_ERRNO_AND_VALUE(Open(tempFile.path(), O_RDONLY | O_CLOEXEC)); - CheckOutput(WorkloadPath(kAssertClosedWorkload), - {WorkloadPath(kAssertClosedWorkload), - absl::StrCat(fd_closed_on_exec.get())}, - {}, W_EXITCODE(0, 0), ""); + CheckExec(RunfilePath(kAssertClosedWorkload), + {RunfilePath(kAssertClosedWorkload), + absl::StrCat(fd_closed_on_exec.get())}, + {}, W_EXITCODE(0, 0), ""); // The assert closed workload exits with code 2 if the file still exists. We // can use this to do a negative test. const FileDescriptor fd_open_on_exec = ASSERT_NO_ERRNO_AND_VALUE(Open(tempFile.path(), O_RDONLY)); - CheckOutput(WorkloadPath(kAssertClosedWorkload), - {WorkloadPath(kAssertClosedWorkload), - absl::StrCat(fd_open_on_exec.get())}, - {}, W_EXITCODE(2, 0), ""); + CheckExec( + RunfilePath(kAssertClosedWorkload), + {RunfilePath(kAssertClosedWorkload), absl::StrCat(fd_open_on_exec.get())}, + {}, W_EXITCODE(2, 0), ""); } TEST(ExecTest, CloexecEventfd) { @@ -505,9 +519,239 @@ TEST(ExecTest, CloexecEventfd) { ASSERT_THAT(efd = eventfd(0, EFD_CLOEXEC), SyscallSucceeds()); FileDescriptor fd(efd); - CheckOutput(WorkloadPath(kAssertClosedWorkload), - {WorkloadPath(kAssertClosedWorkload), absl::StrCat(fd.get())}, {}, - W_EXITCODE(0, 0), ""); + CheckExec(RunfilePath(kAssertClosedWorkload), + {RunfilePath(kAssertClosedWorkload), absl::StrCat(fd.get())}, {}, + W_EXITCODE(0, 0), ""); +} + +constexpr int kLinuxMaxSymlinks = 40; + +TEST(ExecTest, SymlinkLimitExceeded) { + std::string path = RunfilePath(kBasicWorkload); + + // Hold onto TempPath objects so they are not destructed prematurely. + std::vector<TempPath> symlinks; + for (int i = 0; i < kLinuxMaxSymlinks + 1; i++) { + symlinks.push_back( + ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateSymlinkTo("/tmp", path))); + path = symlinks[i].path(); + } + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE( + ForkAndExec(path, {path}, {}, /*child=*/nullptr, &execve_errno)); + EXPECT_EQ(execve_errno, ELOOP); +} + +TEST(ExecTest, SymlinkLimitRefreshedForInterpreter) { + std::string tmp_dir = "/tmp"; + std::string interpreter_path = "/bin/echo"; + TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( + tmp_dir, absl::StrCat("#!", interpreter_path), 0755)); + std::string script_path = script.path(); + + // Hold onto TempPath objects so they are not destructed prematurely. + std::vector<TempPath> interpreter_symlinks; + std::vector<TempPath> script_symlinks; + for (int i = 0; i < kLinuxMaxSymlinks; i++) { + interpreter_symlinks.push_back(ASSERT_NO_ERRNO_AND_VALUE( + TempPath::CreateSymlinkTo(tmp_dir, interpreter_path))); + interpreter_path = interpreter_symlinks[i].path(); + script_symlinks.push_back(ASSERT_NO_ERRNO_AND_VALUE( + TempPath::CreateSymlinkTo(tmp_dir, script_path))); + script_path = script_symlinks[i].path(); + } + + CheckExec(script_path, {script_path}, {}, ArgEnvExitStatus(0, 0), ""); +} + +TEST(ExecveatTest, BasicWithFDCWD) { + std::string path = RunfilePath(kBasicWorkload); + CheckExecveat(AT_FDCWD, path, {path}, {}, /*flags=*/0, ArgEnvExitStatus(0, 0), + absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, Basic) { + std::string absolute_path = RunfilePath(kBasicWorkload); + std::string parent_dir = std::string(Dirname(absolute_path)); + std::string base = std::string(Basename(absolute_path)); + const FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); + + CheckExecveat(dirfd.get(), base, {absolute_path}, {}, /*flags=*/0, + ArgEnvExitStatus(0, 0), absl::StrCat(absolute_path, "\n")); +} + +TEST(ExecveatTest, FDNotADirectory) { + std::string absolute_path = RunfilePath(kBasicWorkload); + std::string base = std::string(Basename(absolute_path)); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(absolute_path, 0)); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(fd.get(), base, {absolute_path}, {}, + /*flags=*/0, /*child=*/nullptr, + &execve_errno)); + EXPECT_EQ(execve_errno, ENOTDIR); +} + +TEST(ExecveatTest, AbsolutePathWithFDCWD) { + std::string path = RunfilePath(kBasicWorkload); + CheckExecveat(AT_FDCWD, path, {path}, {}, ArgEnvExitStatus(0, 0), 0, + absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, AbsolutePath) { + std::string path = RunfilePath(kBasicWorkload); + // File descriptor should be ignored when an absolute path is given. + const int32_t badFD = -1; + CheckExecveat(badFD, path, {path}, {}, ArgEnvExitStatus(0, 0), 0, + absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, EmptyPathBasic) { + std::string path = RunfilePath(kBasicWorkload); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_PATH)); + + CheckExecveat(fd.get(), "", {path}, {}, AT_EMPTY_PATH, ArgEnvExitStatus(0, 0), + absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, EmptyPathWithDirFD) { + std::string path = RunfilePath(kBasicWorkload); + std::string parent_dir = std::string(Dirname(path)); + const FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(dirfd.get(), "", {path}, {}, + AT_EMPTY_PATH, + /*child=*/nullptr, &execve_errno)); + EXPECT_EQ(execve_errno, EACCES); +} + +TEST(ExecveatTest, EmptyPathWithoutEmptyPathFlag) { + std::string path = RunfilePath(kBasicWorkload); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_PATH)); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat( + fd.get(), "", {path}, {}, /*flags=*/0, /*child=*/nullptr, &execve_errno)); + EXPECT_EQ(execve_errno, ENOENT); +} + +TEST(ExecveatTest, AbsolutePathWithEmptyPathFlag) { + std::string path = RunfilePath(kBasicWorkload); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_PATH)); + + CheckExecveat(fd.get(), path, {path}, {}, AT_EMPTY_PATH, + ArgEnvExitStatus(0, 0), absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, RelativePathWithEmptyPathFlag) { + std::string absolute_path = RunfilePath(kBasicWorkload); + std::string parent_dir = std::string(Dirname(absolute_path)); + std::string base = std::string(Basename(absolute_path)); + const FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); + + CheckExecveat(dirfd.get(), base, {absolute_path}, {}, AT_EMPTY_PATH, + ArgEnvExitStatus(0, 0), absl::StrCat(absolute_path, "\n")); +} + +TEST(ExecveatTest, SymlinkNoFollowWithRelativePath) { + std::string parent_dir = "/tmp"; + TempPath link = ASSERT_NO_ERRNO_AND_VALUE( + TempPath::CreateSymlinkTo(parent_dir, RunfilePath(kBasicWorkload))); + const FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); + std::string base = std::string(Basename(link.path())); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(dirfd.get(), base, {base}, {}, + AT_SYMLINK_NOFOLLOW, + /*child=*/nullptr, &execve_errno)); + EXPECT_EQ(execve_errno, ELOOP); +} + +TEST(ExecveatTest, SymlinkNoFollowWithAbsolutePath) { + std::string parent_dir = "/tmp"; + TempPath link = ASSERT_NO_ERRNO_AND_VALUE( + TempPath::CreateSymlinkTo(parent_dir, RunfilePath(kBasicWorkload))); + std::string path = link.path(); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(AT_FDCWD, path, {path}, {}, + AT_SYMLINK_NOFOLLOW, + /*child=*/nullptr, &execve_errno)); + EXPECT_EQ(execve_errno, ELOOP); +} + +TEST(ExecveatTest, SymlinkNoFollowAndEmptyPath) { + TempPath link = ASSERT_NO_ERRNO_AND_VALUE( + TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); + std::string path = link.path(); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, 0)); + + CheckExecveat(fd.get(), "", {path}, {}, AT_EMPTY_PATH | AT_SYMLINK_NOFOLLOW, + ArgEnvExitStatus(0, 0), absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, SymlinkNoFollowIgnoreSymlinkAncestor) { + TempPath parent_link = + ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateSymlinkTo("/tmp", "/bin")); + std::string path_with_symlink = JoinPath(parent_link.path(), "echo"); + + CheckExecveat(AT_FDCWD, path_with_symlink, {path_with_symlink}, {}, + AT_SYMLINK_NOFOLLOW, ArgEnvExitStatus(0, 0), ""); +} + +TEST(ExecveatTest, SymlinkNoFollowWithNormalFile) { + const FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open("/bin", O_DIRECTORY)); + + CheckExecveat(dirfd.get(), "echo", {"echo"}, {}, AT_SYMLINK_NOFOLLOW, + ArgEnvExitStatus(0, 0), ""); +} + +TEST(ExecveatTest, BasicWithCloexecFD) { + std::string path = RunfilePath(kBasicWorkload); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_CLOEXEC)); + + CheckExecveat(fd.get(), "", {path}, {}, AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH, + ArgEnvExitStatus(0, 0), absl::StrCat(path, "\n")); +} + +TEST(ExecveatTest, InterpreterScriptWithCloexecFD) { + std::string path = RunfilePath(kExitScript); + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_CLOEXEC)); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(fd.get(), "", {path}, {}, + AT_EMPTY_PATH, /*child=*/nullptr, + &execve_errno)); + EXPECT_EQ(execve_errno, ENOENT); +} + +TEST(ExecveatTest, InterpreterScriptWithCloexecDirFD) { + std::string absolute_path = RunfilePath(kExitScript); + std::string parent_dir = std::string(Dirname(absolute_path)); + std::string base = std::string(Basename(absolute_path)); + const FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_CLOEXEC | O_DIRECTORY)); + + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(dirfd.get(), base, {base}, {}, + /*flags=*/0, /*child=*/nullptr, + &execve_errno)); + EXPECT_EQ(execve_errno, ENOENT); +} + +TEST(ExecveatTest, InvalidFlags) { + int execve_errno; + ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat( + /*dirfd=*/-1, "", {}, {}, /*flags=*/0xFFFF, /*child=*/nullptr, + &execve_errno)); + EXPECT_EQ(execve_errno, EINVAL); } // Priority consistent across calls to execve() @@ -522,9 +766,8 @@ TEST(GetpriorityTest, ExecveMaintainsPriority) { // Program run (priority_execve) will exit(X) where // X=getpriority(PRIO_PROCESS,0). Check that this exit value is prio. - CheckOutput(WorkloadPath(kPriorityWorkload), - {WorkloadPath(kPriorityWorkload)}, {}, - W_EXITCODE(expected_exit_code, 0), ""); + CheckExec(RunfilePath(kPriorityWorkload), {RunfilePath(kPriorityWorkload)}, + {}, W_EXITCODE(expected_exit_code, 0), ""); } void ExecWithThread() { diff --git a/test/syscalls/linux/exec_binary.cc b/test/syscalls/linux/exec_binary.cc index 0a3931e5a..736452b0c 100644 --- a/test/syscalls/linux/exec_binary.cc +++ b/test/syscalls/linux/exec_binary.cc @@ -20,6 +20,7 @@ #include <sys/types.h> #include <sys/user.h> #include <unistd.h> + #include <algorithm> #include <functional> #include <iterator> diff --git a/test/syscalls/linux/fcntl.cc b/test/syscalls/linux/fcntl.cc index 8a45be12a..4f3aa81d6 100644 --- a/test/syscalls/linux/fcntl.cc +++ b/test/syscalls/linux/fcntl.cc @@ -14,6 +14,7 @@ #include <fcntl.h> #include <signal.h> +#include <sys/types.h> #include <syscall.h> #include <unistd.h> @@ -32,6 +33,7 @@ #include "test/util/eventfd_util.h" #include "test/util/multiprocess_util.h" #include "test/util/posix_error.h" +#include "test/util/save_util.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" #include "test/util/timer_util.h" @@ -910,8 +912,166 @@ TEST(FcntlTest, GetOwn) { FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN), + EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), 0); + MaybeSave(); +} + +TEST(FcntlTest, GetOwnEx) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &owner), + SyscallSucceedsWithValue(0)); +} + +TEST(FcntlTest, SetOwnExInvalidType) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = __pid_type(-1); + EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallFailsWithErrno(EINVAL)); +} + +TEST(FcntlTest, SetOwnExInvalidTid) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = F_OWNER_TID; + owner.pid = -1; + + EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallFailsWithErrno(ESRCH)); +} + +TEST(FcntlTest, SetOwnExInvalidPid) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = F_OWNER_PID; + owner.pid = -1; + + EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallFailsWithErrno(ESRCH)); +} + +TEST(FcntlTest, SetOwnExInvalidPgrp) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = F_OWNER_PGRP; + owner.pid = -1; + + EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallFailsWithErrno(ESRCH)); +} + +TEST(FcntlTest, SetOwnExTid) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = F_OWNER_TID; + EXPECT_THAT(owner.pid = syscall(__NR_gettid), SyscallSucceeds()); + + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallSucceeds()); + + EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), owner.pid); + MaybeSave(); +} + +TEST(FcntlTest, SetOwnExPid) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = F_OWNER_PID; + EXPECT_THAT(owner.pid = getpid(), SyscallSucceeds()); + + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallSucceeds()); + + EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), owner.pid); + MaybeSave(); +} + +TEST(FcntlTest, SetOwnExPgrp) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex owner = {}; + owner.type = F_OWNER_PGRP; + EXPECT_THAT(owner.pid = getpgrp(), SyscallSucceeds()); + + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), + SyscallSucceeds()); + + // NOTE(igudger): I don't understand why, but this is flaky on Linux. + // GetOwnExPgrp (below) does not have this issue. + SKIP_IF(!IsRunningOnGvisor()); + + EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), -owner.pid); + MaybeSave(); +} + +TEST(FcntlTest, GetOwnExTid) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex set_owner = {}; + set_owner.type = F_OWNER_TID; + EXPECT_THAT(set_owner.pid = syscall(__NR_gettid), SyscallSucceeds()); + + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &set_owner), + SyscallSucceeds()); + + f_owner_ex got_owner = {}; + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &got_owner), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(got_owner.type, set_owner.type); + EXPECT_EQ(got_owner.pid, set_owner.pid); +} + +TEST(FcntlTest, GetOwnExPid) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex set_owner = {}; + set_owner.type = F_OWNER_PID; + EXPECT_THAT(set_owner.pid = getpid(), SyscallSucceeds()); + + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &set_owner), + SyscallSucceeds()); + + f_owner_ex got_owner = {}; + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &got_owner), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(got_owner.type, set_owner.type); + EXPECT_EQ(got_owner.pid, set_owner.pid); +} + +TEST(FcntlTest, GetOwnExPgrp) { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); + + f_owner_ex set_owner = {}; + set_owner.type = F_OWNER_PGRP; + EXPECT_THAT(set_owner.pid = getpgrp(), SyscallSucceeds()); + + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &set_owner), + SyscallSucceeds()); + + f_owner_ex got_owner = {}; + ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &got_owner), SyscallSucceedsWithValue(0)); + EXPECT_EQ(got_owner.type, set_owner.type); + EXPECT_EQ(got_owner.pid, set_owner.pid); } } // namespace diff --git a/test/syscalls/linux/file_base.h b/test/syscalls/linux/file_base.h index 36efabcae..6f80bc97c 100644 --- a/test/syscalls/linux/file_base.h +++ b/test/syscalls/linux/file_base.h @@ -27,12 +27,12 @@ #include <sys/types.h> #include <sys/uio.h> #include <unistd.h> + #include <cstring> #include <string> #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/string_view.h" #include "test/util/file_descriptor.h" #include "test/util/posix_error.h" @@ -111,95 +111,6 @@ class FileTest : public ::testing::Test { int test_pipe_[2]; }; -class SocketTest : public ::testing::Test { - public: - void SetUp() override { - test_unix_stream_socket_[0] = -1; - test_unix_stream_socket_[1] = -1; - test_unix_dgram_socket_[0] = -1; - test_unix_dgram_socket_[1] = -1; - test_unix_seqpacket_socket_[0] = -1; - test_unix_seqpacket_socket_[1] = -1; - test_tcp_socket_[0] = -1; - test_tcp_socket_[1] = -1; - - ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, test_unix_stream_socket_), - SyscallSucceeds()); - ASSERT_THAT(fcntl(test_unix_stream_socket_[0], F_SETFL, O_NONBLOCK), - SyscallSucceeds()); - ASSERT_THAT(socketpair(AF_UNIX, SOCK_DGRAM, 0, test_unix_dgram_socket_), - SyscallSucceeds()); - ASSERT_THAT(fcntl(test_unix_dgram_socket_[0], F_SETFL, O_NONBLOCK), - SyscallSucceeds()); - ASSERT_THAT( - socketpair(AF_UNIX, SOCK_SEQPACKET, 0, test_unix_seqpacket_socket_), - SyscallSucceeds()); - ASSERT_THAT(fcntl(test_unix_seqpacket_socket_[0], F_SETFL, O_NONBLOCK), - SyscallSucceeds()); - } - - void TearDown() override { - close(test_unix_stream_socket_[0]); - close(test_unix_stream_socket_[1]); - - close(test_unix_dgram_socket_[0]); - close(test_unix_dgram_socket_[1]); - - close(test_unix_seqpacket_socket_[0]); - close(test_unix_seqpacket_socket_[1]); - - close(test_tcp_socket_[0]); - close(test_tcp_socket_[1]); - } - - int test_unix_stream_socket_[2]; - int test_unix_dgram_socket_[2]; - int test_unix_seqpacket_socket_[2]; - int test_tcp_socket_[2]; -}; - -// MatchesStringLength checks that a tuple argument of (struct iovec *, int) -// corresponding to an iovec array and its length, contains data that matches -// the string length strlen. -MATCHER_P(MatchesStringLength, strlen, "") { - struct iovec* iovs = arg.first; - int niov = arg.second; - int offset = 0; - for (int i = 0; i < niov; i++) { - offset += iovs[i].iov_len; - } - if (offset != static_cast<int>(strlen)) { - *result_listener << offset; - return false; - } - return true; -} - -// MatchesStringValue checks that a tuple argument of (struct iovec *, int) -// corresponding to an iovec array and its length, contains data that matches -// the string value str. -MATCHER_P(MatchesStringValue, str, "") { - struct iovec* iovs = arg.first; - int len = strlen(str); - int niov = arg.second; - int offset = 0; - for (int i = 0; i < niov; i++) { - struct iovec iov = iovs[i]; - if (len < offset) { - *result_listener << "strlen " << len << " < offset " << offset; - return false; - } - if (strncmp(static_cast<char*>(iov.iov_base), &str[offset], iov.iov_len)) { - absl::string_view iovec_string(static_cast<char*>(iov.iov_base), - iov.iov_len); - *result_listener << iovec_string << " @offset " << offset; - return false; - } - offset += iov.iov_len; - } - return true; -} - } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/flock.cc b/test/syscalls/linux/flock.cc index b4a91455d..3ecb8db8e 100644 --- a/test/syscalls/linux/flock.cc +++ b/test/syscalls/linux/flock.cc @@ -14,6 +14,7 @@ #include <errno.h> #include <sys/file.h> + #include <string> #include "gtest/gtest.h" diff --git a/test/syscalls/linux/fork.cc b/test/syscalls/linux/fork.cc index dd6e1a422..371890110 100644 --- a/test/syscalls/linux/fork.cc +++ b/test/syscalls/linux/fork.cc @@ -20,6 +20,7 @@ #include <sys/stat.h> #include <sys/types.h> #include <unistd.h> + #include <atomic> #include <cstdlib> diff --git a/test/syscalls/linux/futex.cc b/test/syscalls/linux/futex.cc index d3e3f998c..40c80a6e1 100644 --- a/test/syscalls/linux/futex.cc +++ b/test/syscalls/linux/futex.cc @@ -239,6 +239,27 @@ TEST_P(PrivateAndSharedFutexTest, Wake1_NoRandomSave) { EXPECT_THAT(futex_wake(IsPrivate(), &a, 1), SyscallSucceedsWithValue(1)); } +TEST_P(PrivateAndSharedFutexTest, Wake0_NoRandomSave) { + constexpr int kInitialValue = 1; + std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); + + // Prevent save/restore from interrupting futex_wait, which will cause it to + // return EAGAIN instead of the expected result if futex_wait is restarted + // after we change the value of a below. + DisableSave ds; + ScopedThread thread([&] { + EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), + SyscallSucceedsWithValue(0)); + }); + absl::SleepFor(kWaiterStartupDelay); + + // Change a so that if futex_wake happens before futex_wait, the latter + // returns EAGAIN instead of hanging the test. + a.fetch_add(1); + // The Linux kernel wakes one waiter even if val is 0 or negative. + EXPECT_THAT(futex_wake(IsPrivate(), &a, 0), SyscallSucceedsWithValue(1)); +} + TEST_P(PrivateAndSharedFutexTest, WakeAll_NoRandomSave) { constexpr int kInitialValue = 1; std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); diff --git a/test/syscalls/linux/getdents.cc b/test/syscalls/linux/getdents.cc index fe9cfafe8..ad2dbacb8 100644 --- a/test/syscalls/linux/getdents.cc +++ b/test/syscalls/linux/getdents.cc @@ -23,6 +23,7 @@ #include <sys/types.h> #include <syscall.h> #include <unistd.h> + #include <map> #include <string> #include <unordered_map> diff --git a/test/syscalls/linux/ioctl.cc b/test/syscalls/linux/ioctl.cc index 4948a76f0..b0a07a064 100644 --- a/test/syscalls/linux/ioctl.cc +++ b/test/syscalls/linux/ioctl.cc @@ -25,7 +25,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" @@ -216,7 +215,8 @@ TEST_F(IoctlTest, FIOASYNCSelfTarget2) { auto mask_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGIO)); - pid_t pid = getpid(); + pid_t pid = -1; + EXPECT_THAT(pid = getpid(), SyscallSucceeds()); EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), SyscallSucceeds()); int set = 1; diff --git a/test/syscalls/linux/ip_socket_test_util.cc b/test/syscalls/linux/ip_socket_test_util.cc index 57e99596f..8398fc95f 100644 --- a/test/syscalls/linux/ip_socket_test_util.cc +++ b/test/syscalls/linux/ip_socket_test_util.cc @@ -12,13 +12,14 @@ // See the License for the specific language governing permissions and // limitations under the License. +#include "test/syscalls/linux/ip_socket_test_util.h" + #include <net/if.h> #include <netinet/in.h> #include <sys/ioctl.h> #include <sys/socket.h> -#include <cstring> -#include "test/syscalls/linux/ip_socket_test_util.h" +#include <cstring> namespace gvisor { namespace testing { diff --git a/test/syscalls/linux/ip_socket_test_util.h b/test/syscalls/linux/ip_socket_test_util.h index 072230d85..9cb4566db 100644 --- a/test/syscalls/linux/ip_socket_test_util.h +++ b/test/syscalls/linux/ip_socket_test_util.h @@ -26,25 +26,6 @@ namespace gvisor { namespace testing { -// Possible values of the "st" field in a /proc/net/{tcp,udp} entry. Source: -// Linux kernel, include/net/tcp_states.h. -enum { - TCP_ESTABLISHED = 1, - TCP_SYN_SENT, - TCP_SYN_RECV, - TCP_FIN_WAIT1, - TCP_FIN_WAIT2, - TCP_TIME_WAIT, - TCP_CLOSE, - TCP_CLOSE_WAIT, - TCP_LAST_ACK, - TCP_LISTEN, - TCP_CLOSING, - TCP_NEW_SYN_RECV, - - TCP_MAX_STATES -}; - // Extracts the IP address from an inet sockaddr in network byte order. uint32_t IPFromInetSockaddr(const struct sockaddr* addr); diff --git a/test/syscalls/linux/itimer.cc b/test/syscalls/linux/itimer.cc index 930d2b940..b77e4cbd1 100644 --- a/test/syscalls/linux/itimer.cc +++ b/test/syscalls/linux/itimer.cc @@ -267,6 +267,9 @@ int TestSIGPROFFairness(absl::Duration sleep) { // Random save/restore is disabled as it introduces additional latency and // unpredictable distribution patterns. TEST(ItimerTest, DeliversSIGPROFToThreadsRoughlyFairlyActive_NoRandomSave) { + // TODO(b/143247272): CPU time accounting is inaccurate for the KVM platform. + SKIP_IF(GvisorPlatform() == Platform::kKVM); + pid_t child; int execve_errno; auto kill = ASSERT_NO_ERRNO_AND_VALUE( @@ -288,6 +291,9 @@ TEST(ItimerTest, DeliversSIGPROFToThreadsRoughlyFairlyActive_NoRandomSave) { // Random save/restore is disabled as it introduces additional latency and // unpredictable distribution patterns. TEST(ItimerTest, DeliversSIGPROFToThreadsRoughlyFairlyIdle_NoRandomSave) { + // TODO(b/143247272): CPU time accounting is inaccurate for the KVM platform. + SKIP_IF(GvisorPlatform() == Platform::kKVM); + pid_t child; int execve_errno; auto kill = ASSERT_NO_ERRNO_AND_VALUE( diff --git a/test/syscalls/linux/madvise.cc b/test/syscalls/linux/madvise.cc index 08ff4052c..7fd0ea20c 100644 --- a/test/syscalls/linux/madvise.cc +++ b/test/syscalls/linux/madvise.cc @@ -25,7 +25,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/util/file_descriptor.h" #include "test/util/logging.h" #include "test/util/memory_util.h" diff --git a/test/syscalls/linux/memory_accounting.cc b/test/syscalls/linux/memory_accounting.cc index a6e20f9c3..94aea4077 100644 --- a/test/syscalls/linux/memory_accounting.cc +++ b/test/syscalls/linux/memory_accounting.cc @@ -13,10 +13,10 @@ // limitations under the License. #include <sys/mman.h> + #include <map> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/match.h" #include "absl/strings/numbers.h" #include "absl/strings/str_format.h" diff --git a/test/syscalls/linux/mlock.cc b/test/syscalls/linux/mlock.cc index 283c21ed3..620b4f8b4 100644 --- a/test/syscalls/linux/mlock.cc +++ b/test/syscalls/linux/mlock.cc @@ -16,6 +16,7 @@ #include <sys/resource.h> #include <sys/syscall.h> #include <unistd.h> + #include <cerrno> #include <cstring> diff --git a/test/syscalls/linux/mmap.cc b/test/syscalls/linux/mmap.cc index a112316e9..1c4d9f1c7 100644 --- a/test/syscalls/linux/mmap.cc +++ b/test/syscalls/linux/mmap.cc @@ -28,6 +28,7 @@ #include <sys/types.h> #include <sys/wait.h> #include <unistd.h> + #include <vector> #include "gmock/gmock.h" @@ -813,23 +814,27 @@ class MMapFileTest : public MMapTest { } }; +class MMapFileParamTest + : public MMapFileTest, + public ::testing::WithParamInterface<std::tuple<int, int>> { + protected: + int prot() const { return std::get<0>(GetParam()); } + + int flags() const { return std::get<1>(GetParam()); } +}; + // MAP_POPULATE allowed. // There isn't a good way to verify it actually did anything. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, MapPopulate) { - ASSERT_THAT( - Map(0, kPageSize, PROT_READ, MAP_PRIVATE | MAP_POPULATE, fd_.get(), 0), - SyscallSucceeds()); +TEST_P(MMapFileParamTest, MapPopulate) { + ASSERT_THAT(Map(0, kPageSize, prot(), flags() | MAP_POPULATE, fd_.get(), 0), + SyscallSucceeds()); } // MAP_POPULATE on a short file. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, MapPopulateShort) { - ASSERT_THAT(Map(0, 2 * kPageSize, PROT_READ, MAP_PRIVATE | MAP_POPULATE, - fd_.get(), 0), - SyscallSucceeds()); +TEST_P(MMapFileParamTest, MapPopulateShort) { + ASSERT_THAT( + Map(0, 2 * kPageSize, prot(), flags() | MAP_POPULATE, fd_.get(), 0), + SyscallSucceeds()); } // Read contents from mapped file. @@ -900,16 +905,6 @@ TEST_F(MMapFileTest, WritePrivateOnReadOnlyFd) { reinterpret_cast<volatile char*>(addr)); } -// MAP_PRIVATE PROT_READ is not allowed on write-only FDs. -TEST_F(MMapFileTest, ReadPrivateOnWriteOnlyFd) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_WRONLY)); - - uintptr_t addr; - EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_PRIVATE, fd.get(), 0), - SyscallFailsWithErrno(EACCES)); -} - // MAP_SHARED PROT_WRITE not allowed on read-only FDs. TEST_F(MMapFileTest, WriteSharedOnReadOnlyFd) { const FileDescriptor fd = @@ -921,28 +916,13 @@ TEST_F(MMapFileTest, WriteSharedOnReadOnlyFd) { SyscallFailsWithErrno(EACCES)); } -// MAP_SHARED PROT_READ not allowed on write-only FDs. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, ReadSharedOnWriteOnlyFd) { +// The FD must be readable. +TEST_P(MMapFileParamTest, WriteOnlyFd) { const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_WRONLY)); uintptr_t addr; - EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd.get(), 0), - SyscallFailsWithErrno(EACCES)); -} - -// MAP_SHARED PROT_WRITE not allowed on write-only FDs. -// The FD must always be readable. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, WriteSharedOnWriteOnlyFd) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_WRONLY)); - - uintptr_t addr; - EXPECT_THAT(addr = Map(0, kPageSize, PROT_WRITE, MAP_SHARED, fd.get(), 0), + EXPECT_THAT(addr = Map(0, kPageSize, prot(), flags(), fd.get(), 0), SyscallFailsWithErrno(EACCES)); } @@ -1181,7 +1161,7 @@ TEST_F(MMapFileTest, ReadSharedTruncateDownThenUp) { ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), SyscallSucceeds()); - // Check that the memory contains he file data. + // Check that the memory contains the file data. EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), buf.c_str(), kPageSize)); // Truncate down, then up. @@ -1370,125 +1350,68 @@ TEST_F(MMapFileTest, WritePrivate) { EqualsMemory(std::string(len, '\0'))); } -// SIGBUS raised when writing past end of file to a private mapping. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, SigBusDeathWritePrivate) { +// SIGBUS raised when reading or writing past end of a mapped file. +TEST_P(MMapFileParamTest, SigBusDeath) { SetupGvisorDeathTest(); uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd_.get(), 0), + ASSERT_THAT(addr = Map(0, 2 * kPageSize, prot(), flags(), fd_.get(), 0), SyscallSucceeds()); - // MMapFileTest makes a file kPageSize/2 long. The entire first page will be - // accessible. Write just beyond that. - size_t len = strlen(kFileContents); - EXPECT_EXIT(std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr + kPageSize)), - ::testing::KilledBySignal(SIGBUS), ""); -} - -// SIGBUS raised when reading past end of file on a shared mapping. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, SigBusDeathReadShared) { - SetupGvisorDeathTest(); - - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // MMapFileTest makes a file kPageSize/2 long. The entire first page will be - // accessible. Read just beyond that. - std::vector<char> in(kPageSize); - EXPECT_EXIT( - std::copy(reinterpret_cast<volatile char*>(addr + kPageSize), - reinterpret_cast<volatile char*>(addr + kPageSize) + kPageSize, - in.data()), - ::testing::KilledBySignal(SIGBUS), ""); + auto* start = reinterpret_cast<volatile char*>(addr + kPageSize); + + // MMapFileTest makes a file kPageSize/2 long. The entire first page should be + // accessible, but anything beyond it should not. + if (prot() & PROT_WRITE) { + // Write beyond first page. + size_t len = strlen(kFileContents); + EXPECT_EXIT(std::copy(kFileContents, kFileContents + len, start), + ::testing::KilledBySignal(SIGBUS), ""); + } else { + // Read beyond first page. + std::vector<char> in(kPageSize); + EXPECT_EXIT(std::copy(start, start + kPageSize, in.data()), + ::testing::KilledBySignal(SIGBUS), ""); + } } -// SIGBUS raised when reading past end of file on a shared mapping. +// Tests that SIGBUS is not raised when reading or writing to a file-mapped +// page before EOF, even if part of the mapping extends beyond EOF. // -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, SigBusDeathWriteShared) { - SetupGvisorDeathTest(); - +// See b/27877699. +TEST_P(MMapFileParamTest, NoSigBusOnPagesBeforeEOF) { uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - // MMapFileTest makes a file kPageSize/2 long. The entire first page will be - // accessible. Write just beyond that. - size_t len = strlen(kFileContents); - EXPECT_EXIT(std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr + kPageSize)), - ::testing::KilledBySignal(SIGBUS), ""); -} - -// Tests that SIGBUS is not raised when writing to a file-mapped page before -// EOF, even if part of the mapping extends beyond EOF. -TEST_F(MMapFileTest, NoSigBusOnPagesBeforeEOF) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd_.get(), 0), + ASSERT_THAT(addr = Map(0, 2 * kPageSize, prot(), flags(), fd_.get(), 0), SyscallSucceeds()); // The test passes if this survives. - size_t len = strlen(kFileContents); - std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr)); -} - -// Tests that SIGBUS is not raised when writing to a file-mapped page containing -// EOF, *after* the EOF for a private mapping. -TEST_F(MMapFileTest, NoSigBusOnPageContainingEOFWritePrivate) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd_.get(), 0), - SyscallSucceeds()); - - // The test passes if this survives. (Technically addr+kPageSize/2 is already - // beyond EOF, but +1 to check for fencepost errors.) - size_t len = strlen(kFileContents); - std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr + (kPageSize / 2) + 1)); -} - -// Tests that SIGBUS is not raised when reading from a file-mapped page -// containing EOF, *after* the EOF for a shared mapping. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, NoSigBusOnPageContainingEOFReadShared) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // The test passes if this survives. (Technically addr+kPageSize/2 is already - // beyond EOF, but +1 to check for fencepost errors.) auto* start = reinterpret_cast<volatile char*>(addr + (kPageSize / 2) + 1); size_t len = strlen(kFileContents); - std::vector<char> in(len); - std::copy(start, start + len, in.data()); + if (prot() & PROT_WRITE) { + std::copy(kFileContents, kFileContents + len, start); + } else { + std::vector<char> in(len); + std::copy(start, start + len, in.data()); + } } -// Tests that SIGBUS is not raised when writing to a file-mapped page containing -// EOF, *after* the EOF for a shared mapping. -// -// FIXME(b/37222275): Parameterize. -TEST_F(MMapFileTest, NoSigBusOnPageContainingEOFWriteShared) { +// Tests that SIGBUS is not raised when reading or writing from a file-mapped +// page containing EOF, *after* the EOF. +TEST_P(MMapFileParamTest, NoSigBusOnPageContainingEOF) { uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), + ASSERT_THAT(addr = Map(0, 2 * kPageSize, prot(), flags(), fd_.get(), 0), SyscallSucceeds()); // The test passes if this survives. (Technically addr+kPageSize/2 is already // beyond EOF, but +1 to check for fencepost errors.) + auto* start = reinterpret_cast<volatile char*>(addr + (kPageSize / 2) + 1); size_t len = strlen(kFileContents); - std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr + (kPageSize / 2) + 1)); + if (prot() & PROT_WRITE) { + std::copy(kFileContents, kFileContents + len, start); + } else { + std::vector<char> in(len); + std::copy(start, start + len, in.data()); + } } // Tests that reading from writable shared file-mapped pages succeeds. @@ -1732,6 +1655,15 @@ TEST(MMapNoFixtureTest, Map32Bit) { #endif // defined(__x86_64__) +INSTANTIATE_TEST_SUITE_P( + ReadWriteSharedPrivate, MMapFileParamTest, + ::testing::Combine(::testing::ValuesIn({ + PROT_READ, + PROT_WRITE, + PROT_READ | PROT_WRITE, + }), + ::testing::ValuesIn({MAP_SHARED, MAP_PRIVATE}))); + } // namespace } // namespace testing diff --git a/test/syscalls/linux/mount.cc b/test/syscalls/linux/mount.cc index e35be3cab..a3e9745cf 100644 --- a/test/syscalls/linux/mount.cc +++ b/test/syscalls/linux/mount.cc @@ -18,6 +18,7 @@ #include <sys/mount.h> #include <sys/stat.h> #include <unistd.h> + #include <functional> #include <memory> #include <string> diff --git a/test/syscalls/linux/open.cc b/test/syscalls/linux/open.cc index 2b1df52ce..267ae19f6 100644 --- a/test/syscalls/linux/open.cc +++ b/test/syscalls/linux/open.cc @@ -73,6 +73,28 @@ class OpenTest : public FileTest { const std::string test_data_ = "hello world\n"; }; +TEST_F(OpenTest, OTrunc) { + auto dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); + ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); + ASSERT_THAT(open(dirpath.c_str(), O_TRUNC, 0666), + SyscallFailsWithErrno(EISDIR)); +} + +TEST_F(OpenTest, OTruncAndReadOnlyDir) { + auto dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); + ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); + ASSERT_THAT(open(dirpath.c_str(), O_TRUNC | O_RDONLY, 0666), + SyscallFailsWithErrno(EISDIR)); +} + +TEST_F(OpenTest, OTruncAndReadOnlyFile) { + auto dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncfile"); + const FileDescriptor existing = + ASSERT_NO_ERRNO_AND_VALUE(Open(dirpath.c_str(), O_RDWR | O_CREAT, 0666)); + const FileDescriptor otrunc = ASSERT_NO_ERRNO_AND_VALUE( + Open(dirpath.c_str(), O_TRUNC | O_RDONLY, 0666)); +} + TEST_F(OpenTest, ReadOnly) { char buf; const FileDescriptor ro_file = diff --git a/test/syscalls/linux/open_create.cc b/test/syscalls/linux/open_create.cc index e5a85ef9d..431733dbe 100644 --- a/test/syscalls/linux/open_create.cc +++ b/test/syscalls/linux/open_create.cc @@ -88,6 +88,30 @@ TEST(CreateTest, CreateExclusively) { SyscallFailsWithErrno(EEXIST)); } +TEST(CreateTeast, CreatWithOTrunc) { + std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); + ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); + ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC, 0666), + SyscallFailsWithErrno(EISDIR)); +} + +TEST(CreateTeast, CreatDirWithOTruncAndReadOnly) { + std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); + ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); + ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC | O_RDONLY, 0666), + SyscallFailsWithErrno(EISDIR)); +} + +TEST(CreateTeast, CreatFileWithOTruncAndReadOnly) { + std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncfile"); + int dirfd; + ASSERT_THAT(dirfd = open(dirpath.c_str(), O_RDWR | O_CREAT, 0666), + SyscallSucceeds()); + ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC | O_RDONLY, 0666), + SyscallSucceeds()); + ASSERT_THAT(close(dirfd), SyscallSucceeds()); +} + TEST(CreateTest, CreateFailsOnUnpermittedDir) { // Make sure we don't have CAP_DAC_OVERRIDE, since that allows the user to // always override directory permissions. diff --git a/test/syscalls/linux/packet_socket.cc b/test/syscalls/linux/packet_socket.cc index 37b4e6575..92ae55eec 100644 --- a/test/syscalls/linux/packet_socket.cc +++ b/test/syscalls/linux/packet_socket.cc @@ -61,6 +61,9 @@ namespace testing { namespace { +using ::testing::AnyOf; +using ::testing::Eq; + constexpr char kMessage[] = "soweoneul malhaebwa"; constexpr in_port_t kPort = 0x409c; // htons(40000) @@ -83,17 +86,14 @@ void SendUDPMessage(int sock) { // Send an IP packet and make sure ETH_P_<something else> doesn't pick it up. TEST(BasicCookedPacketTest, WrongType) { - // (b/129292371): Remove once we support packet sockets. - SKIP_IF(IsRunningOnGvisor()); - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { ASSERT_THAT(socket(AF_PACKET, SOCK_DGRAM, ETH_P_PUP), SyscallFailsWithErrno(EPERM)); GTEST_SKIP(); } - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_PACKET, SOCK_DGRAM, ETH_P_PUP)); + FileDescriptor sock = ASSERT_NO_ERRNO_AND_VALUE( + Socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_PUP))); // Let's use a simple IP payload: a UDP datagram. FileDescriptor udp_sock = @@ -124,23 +124,31 @@ class CookedPacketTest : public ::testing::TestWithParam<int> { }; void CookedPacketTest::SetUp() { - // (b/129292371): Remove once we support packet sockets. - SKIP_IF(IsRunningOnGvisor()); - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { ASSERT_THAT(socket(AF_PACKET, SOCK_DGRAM, htons(GetParam())), SyscallFailsWithErrno(EPERM)); GTEST_SKIP(); } + if (!IsRunningOnGvisor()) { + FileDescriptor acceptLocal = ASSERT_NO_ERRNO_AND_VALUE( + Open("/proc/sys/net/ipv4/conf/lo/accept_local", O_RDONLY)); + FileDescriptor routeLocalnet = ASSERT_NO_ERRNO_AND_VALUE( + Open("/proc/sys/net/ipv4/conf/lo/route_localnet", O_RDONLY)); + char enabled; + ASSERT_THAT(read(acceptLocal.get(), &enabled, 1), + SyscallSucceedsWithValue(1)); + ASSERT_EQ(enabled, '1'); + ASSERT_THAT(read(routeLocalnet.get(), &enabled, 1), + SyscallSucceedsWithValue(1)); + ASSERT_EQ(enabled, '1'); + } + ASSERT_THAT(socket_ = socket(AF_PACKET, SOCK_DGRAM, htons(GetParam())), SyscallSucceeds()); } void CookedPacketTest::TearDown() { - // (b/129292371): Remove once we support packet sockets. - SKIP_IF(IsRunningOnGvisor()); - // TearDown will be run even if we skip the test. if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { EXPECT_THAT(close(socket_), SyscallSucceeds()); @@ -177,13 +185,16 @@ TEST_P(CookedPacketTest, Receive) { ASSERT_THAT(recvfrom(socket_, buf, sizeof(buf), 0, reinterpret_cast<struct sockaddr*>(&src), &src_len), SyscallSucceedsWithValue(packet_size)); - ASSERT_EQ(src_len, sizeof(src)); + // sockaddr_ll ends with an 8 byte physical address field, but ethernet + // addresses only use 6 bytes. Linux used to return sizeof(sockaddr_ll)-2 + // here, but since commit b2cf86e1563e33a14a1c69b3e508d15dc12f804c returns + // sizeof(sockaddr_ll). + ASSERT_THAT(src_len, AnyOf(Eq(sizeof(src)), Eq(sizeof(src) - 2))); + // TODO(b/129292371): Verify protocol once we return it. // Verify the source address. EXPECT_EQ(src.sll_family, AF_PACKET); - EXPECT_EQ(src.sll_protocol, htons(ETH_P_IP)); EXPECT_EQ(src.sll_ifindex, GetLoopbackIndex()); - EXPECT_EQ(src.sll_hatype, ARPHRD_LOOPBACK); EXPECT_EQ(src.sll_halen, ETH_ALEN); // This came from the loopback device, so the address is all 0s. for (int i = 0; i < src.sll_halen; i++) { @@ -213,6 +224,9 @@ TEST_P(CookedPacketTest, Receive) { // Send via a packet socket. TEST_P(CookedPacketTest, Send) { + // TODO(b/129292371): Remove once we support packet socket writing. + SKIP_IF(IsRunningOnGvisor()); + // Let's send a UDP packet and receive it using a regular UDP socket. FileDescriptor udp_sock = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); diff --git a/test/syscalls/linux/packet_socket_raw.cc b/test/syscalls/linux/packet_socket_raw.cc index 6491453b6..d258d353c 100644 --- a/test/syscalls/linux/packet_socket_raw.cc +++ b/test/syscalls/linux/packet_socket_raw.cc @@ -26,6 +26,7 @@ #include <sys/types.h> #include <unistd.h> +#include "gmock/gmock.h" #include "gtest/gtest.h" #include "absl/base/internal/endian.h" #include "test/syscalls/linux/socket_test_util.h" @@ -61,6 +62,9 @@ namespace testing { namespace { +using ::testing::AnyOf; +using ::testing::Eq; + constexpr char kMessage[] = "soweoneul malhaebwa"; constexpr in_port_t kPort = 0x409c; // htons(40000) @@ -97,9 +101,6 @@ class RawPacketTest : public ::testing::TestWithParam<int> { }; void RawPacketTest::SetUp() { - // (b/129292371): Remove once we support packet sockets. - SKIP_IF(IsRunningOnGvisor()); - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { ASSERT_THAT(socket(AF_PACKET, SOCK_RAW, htons(GetParam())), SyscallFailsWithErrno(EPERM)); @@ -125,9 +126,6 @@ void RawPacketTest::SetUp() { } void RawPacketTest::TearDown() { - // (b/129292371): Remove once we support packet sockets. - SKIP_IF(IsRunningOnGvisor()); - // TearDown will be run even if we skip the test. if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { EXPECT_THAT(close(socket_), SyscallSucceeds()); @@ -164,16 +162,16 @@ TEST_P(RawPacketTest, Receive) { ASSERT_THAT(recvfrom(socket_, buf, sizeof(buf), 0, reinterpret_cast<struct sockaddr*>(&src), &src_len), SyscallSucceedsWithValue(packet_size)); - // sizeof(src) is the size of a struct sockaddr_ll. sockaddr_ll ends with an 8 - // byte physical address field, but ethernet (MAC) addresses only use 6 bytes. - // Thus src_len should get modified to be 2 less than the size of sockaddr_ll. - ASSERT_EQ(src_len, sizeof(src) - 2); + // sockaddr_ll ends with an 8 byte physical address field, but ethernet + // addresses only use 6 bytes. Linux used to return sizeof(sockaddr_ll)-2 + // here, but since commit b2cf86e1563e33a14a1c69b3e508d15dc12f804c returns + // sizeof(sockaddr_ll). + ASSERT_THAT(src_len, AnyOf(Eq(sizeof(src)), Eq(sizeof(src) - 2))); + // TODO(b/129292371): Verify protocol once we return it. // Verify the source address. EXPECT_EQ(src.sll_family, AF_PACKET); - EXPECT_EQ(src.sll_protocol, htons(ETH_P_IP)); EXPECT_EQ(src.sll_ifindex, GetLoopbackIndex()); - EXPECT_EQ(src.sll_hatype, ARPHRD_LOOPBACK); EXPECT_EQ(src.sll_halen, ETH_ALEN); // This came from the loopback device, so the address is all 0s. for (int i = 0; i < src.sll_halen; i++) { @@ -214,6 +212,9 @@ TEST_P(RawPacketTest, Receive) { // Send via a packet socket. TEST_P(RawPacketTest, Send) { + // TODO(b/129292371): Remove once we support packet socket writing. + SKIP_IF(IsRunningOnGvisor()); + // Let's send a UDP packet and receive it using a regular UDP socket. FileDescriptor udp_sock = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); @@ -309,7 +310,7 @@ TEST_P(RawPacketTest, Send) { } INSTANTIATE_TEST_SUITE_P(AllInetTests, RawPacketTest, - ::testing::Values(ETH_P_IP /*, ETH_P_ALL*/)); + ::testing::Values(ETH_P_IP, ETH_P_ALL)); } // namespace diff --git a/test/syscalls/linux/pipe.cc b/test/syscalls/linux/pipe.cc index 10e2a6dfc..ac9b21b24 100644 --- a/test/syscalls/linux/pipe.cc +++ b/test/syscalls/linux/pipe.cc @@ -20,7 +20,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/str_cat.h" #include "absl/synchronization/notification.h" #include "absl/time/clock.h" @@ -213,6 +212,20 @@ TEST(Pipe2Test, BadOptions) { EXPECT_THAT(pipe2(fds, 0xDEAD), SyscallFailsWithErrno(EINVAL)); } +// Tests that opening named pipes with O_TRUNC shouldn't cause an error, but +// calls to (f)truncate should. +TEST(NamedPipeTest, Truncate) { + const std::string tmp_path = NewTempAbsPath(); + SKIP_IF(mkfifo(tmp_path.c_str(), 0644) != 0); + + ASSERT_THAT(open(tmp_path.c_str(), O_NONBLOCK | O_RDONLY), SyscallSucceeds()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( + Open(tmp_path.c_str(), O_RDWR | O_NONBLOCK | O_TRUNC)); + + ASSERT_THAT(truncate(tmp_path.c_str(), 0), SyscallFailsWithErrno(EINVAL)); + ASSERT_THAT(ftruncate(fd.get(), 0), SyscallFailsWithErrno(EINVAL)); +} + TEST_P(PipeTest, Seek) { SKIP_IF(!CreateBlocking()); diff --git a/test/syscalls/linux/pread64.cc b/test/syscalls/linux/pread64.cc index 5e3eb1735..2cecf2e5f 100644 --- a/test/syscalls/linux/pread64.cc +++ b/test/syscalls/linux/pread64.cc @@ -20,7 +20,6 @@ #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/util/file_descriptor.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/preadv.cc b/test/syscalls/linux/preadv.cc index eebd129f2..f7ea44054 100644 --- a/test/syscalls/linux/preadv.cc +++ b/test/syscalls/linux/preadv.cc @@ -22,7 +22,6 @@ #include <string> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/time/clock.h" #include "absl/time/time.h" #include "test/util/file_descriptor.h" diff --git a/test/syscalls/linux/preadv2.cc b/test/syscalls/linux/preadv2.cc index aac960130..c9246367d 100644 --- a/test/syscalls/linux/preadv2.cc +++ b/test/syscalls/linux/preadv2.cc @@ -21,7 +21,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/memory/memory.h" #include "test/syscalls/linux/file_base.h" #include "test/util/file_descriptor.h" diff --git a/test/syscalls/linux/proc.cc b/test/syscalls/linux/proc.cc index e4c030bbb..8cf08991b 100644 --- a/test/syscalls/linux/proc.cc +++ b/test/syscalls/linux/proc.cc @@ -37,6 +37,7 @@ #include <map> #include <memory> #include <ostream> +#include <regex> #include <string> #include <unordered_set> #include <utility> @@ -51,6 +52,7 @@ #include "absl/strings/str_split.h" #include "absl/strings/string_view.h" #include "absl/synchronization/mutex.h" +#include "absl/synchronization/notification.h" #include "absl/time/clock.h" #include "absl/time/time.h" #include "test/util/capability_util.h" @@ -183,7 +185,8 @@ PosixError WithSubprocess(SubprocessCallback const& running, siginfo_t info; // Wait until the child process has exited (WEXITED flag) but don't // reap the child (WNOWAIT flag). - waitid(P_PID, child_pid, &info, WNOWAIT | WEXITED); + EXPECT_THAT(waitid(P_PID, child_pid, &info, WNOWAIT | WEXITED), + SyscallSucceeds()); if (zombied) { // Arg of "Z" refers to a Zombied Process. @@ -1987,6 +1990,44 @@ TEST(Proc, GetdentsEnoent) { SyscallFailsWithErrno(ENOENT)); } +void CheckSyscwFromIOFile(const std::string& path, const std::string& regex) { + std::string output; + ASSERT_NO_ERRNO(GetContents(path, &output)); + ASSERT_THAT(output, ContainsRegex(absl::StrCat("syscw:\\s+", regex, "\n"))); +} + +// Checks that there is variable accounting of IO between threads/tasks. +TEST(Proc, PidTidIOAccounting) { + absl::Notification notification; + + // Run a thread with a bunch of writes. Check that io account records exactly + // the number of write calls. File open/close is there to prevent buffering. + ScopedThread writer([¬ification] { + const int num_writes = 100; + for (int i = 0; i < num_writes; i++) { + auto path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + ASSERT_NO_ERRNO(SetContents(path.path(), "a")); + } + notification.Notify(); + const std::string& writer_dir = + absl::StrCat("/proc/", getpid(), "/task/", gettid(), "/io"); + + CheckSyscwFromIOFile(writer_dir, std::to_string(num_writes)); + }); + + // Run a thread and do no writes. Check that no writes are recorded. + ScopedThread noop([¬ification] { + notification.WaitForNotification(); + const std::string& noop_dir = + absl::StrCat("/proc/", getpid(), "/task/", gettid(), "/io"); + + CheckSyscwFromIOFile(noop_dir, "0"); + }); + + writer.Join(); + noop.Join(); +} + } // namespace } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/proc_net.cc b/test/syscalls/linux/proc_net.cc index efdaf202b..65bad06d4 100644 --- a/test/syscalls/linux/proc_net.cc +++ b/test/syscalls/linux/proc_net.cc @@ -12,8 +12,18 @@ // See the License for the specific language governing permissions and // limitations under the License. +#include <arpa/inet.h> +#include <errno.h> +#include <netinet/in.h> +#include <poll.h> +#include <sys/socket.h> +#include <sys/syscall.h> +#include <sys/types.h> + #include "gtest/gtest.h" -#include "gtest/gtest.h" +#include "absl/strings/str_split.h" +#include "absl/time/clock.h" +#include "test/syscalls/linux/socket_test_util.h" #include "test/util/capability_util.h" #include "test/util/file_descriptor.h" #include "test/util/fs_util.h" @@ -57,6 +67,265 @@ TEST(ProcSysNetIpv4Sack, CanReadAndWrite) { EXPECT_EQ(buf, to_write); } +PosixErrorOr<uint64_t> GetSNMPMetricFromProc(const std::string snmp, + const std::string &type, + const std::string &item) { + std::vector<std::string> snmp_vec = absl::StrSplit(snmp, '\n'); + + // /proc/net/snmp prints a line of headers followed by a line of metrics. + // Only search the headers. + for (unsigned i = 0; i < snmp_vec.size(); i = i + 2) { + if (!absl::StartsWith(snmp_vec[i], type)) continue; + + std::vector<std::string> fields = + absl::StrSplit(snmp_vec[i], ' ', absl::SkipWhitespace()); + + EXPECT_TRUE((i + 1) < snmp_vec.size()); + std::vector<std::string> values = + absl::StrSplit(snmp_vec[i + 1], ' ', absl::SkipWhitespace()); + + EXPECT_TRUE(!fields.empty() && fields.size() == values.size()); + + // Metrics start at the first index. + for (unsigned j = 1; j < fields.size(); j++) { + if (fields[j] == item) { + uint64_t val; + if (!absl::SimpleAtoi(values[j], &val)) { + return PosixError(EINVAL, + absl::StrCat("field is not a number: ", values[j])); + } + + return val; + } + } + } + // We should never get here. + return PosixError( + EINVAL, absl::StrCat("failed to find ", type, "/", item, " in:", snmp)); +} + +TEST(ProcNetSnmp, TcpReset_NoRandomSave) { + // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. + DisableSave ds; + + uint64_t oldAttemptFails; + uint64_t oldActiveOpens; + uint64_t oldOutRsts; + auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + oldActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); + oldOutRsts = + ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Tcp", "OutRsts")); + oldAttemptFails = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "AttemptFails")); + + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0)); + + struct sockaddr_in sin = { + .sin_family = AF_INET, + .sin_port = htons(1234), + }; + + ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); + ASSERT_THAT(connect(s.get(), (struct sockaddr *)&sin, sizeof(sin)), + SyscallFailsWithErrno(ECONNREFUSED)); + + uint64_t newAttemptFails; + uint64_t newActiveOpens; + uint64_t newOutRsts; + snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + newActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); + newOutRsts = + ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Tcp", "OutRsts")); + newAttemptFails = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "AttemptFails")); + + EXPECT_EQ(oldActiveOpens, newActiveOpens - 1); + EXPECT_EQ(oldOutRsts, newOutRsts - 1); + EXPECT_EQ(oldAttemptFails, newAttemptFails - 1); +} + +TEST(ProcNetSnmp, TcpEstab_NoRandomSave) { + // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. + DisableSave ds; + + uint64_t oldEstabResets; + uint64_t oldActiveOpens; + uint64_t oldPassiveOpens; + uint64_t oldCurrEstab; + auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + oldActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); + oldPassiveOpens = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "PassiveOpens")); + oldCurrEstab = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab")); + oldEstabResets = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "EstabResets")); + + FileDescriptor s_listen = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0)); + struct sockaddr_in sin = { + .sin_family = AF_INET, + .sin_port = 0, + }; + + ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); + ASSERT_THAT(bind(s_listen.get(), (struct sockaddr *)&sin, sizeof(sin)), + SyscallSucceeds()); + ASSERT_THAT(listen(s_listen.get(), 1), SyscallSucceeds()); + + // Get the port bound by the listening socket. + socklen_t addrlen = sizeof(sin); + ASSERT_THAT( + getsockname(s_listen.get(), reinterpret_cast<sockaddr *>(&sin), &addrlen), + SyscallSucceeds()); + + FileDescriptor s_connect = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0)); + ASSERT_THAT(connect(s_connect.get(), (struct sockaddr *)&sin, sizeof(sin)), + SyscallSucceeds()); + + auto s_accept = + ASSERT_NO_ERRNO_AND_VALUE(Accept(s_listen.get(), nullptr, nullptr)); + + uint64_t newEstabResets; + uint64_t newActiveOpens; + uint64_t newPassiveOpens; + uint64_t newCurrEstab; + snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + newActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); + newPassiveOpens = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "PassiveOpens")); + newCurrEstab = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab")); + + EXPECT_EQ(oldActiveOpens, newActiveOpens - 1); + EXPECT_EQ(oldPassiveOpens, newPassiveOpens - 1); + EXPECT_EQ(oldCurrEstab, newCurrEstab - 2); + + // Send 1 byte from client to server. + ASSERT_THAT(send(s_connect.get(), "a", 1, 0), SyscallSucceedsWithValue(1)); + + constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. + + // Wait until server-side fd sees the data on its side but don't read it. + struct pollfd poll_fd = {s_accept.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), + SyscallSucceedsWithValue(1)); + + // Now close server-side fd without reading the data which leads to a RST + // packet sent to client side. + s_accept.reset(-1); + + // Wait until client-side fd sees RST packet. + struct pollfd poll_fd1 = {s_connect.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&poll_fd1, 1, kPollTimeoutMs), + SyscallSucceedsWithValue(1)); + + // Now close client-side fd. + s_connect.reset(-1); + + // Wait until the process of the netstack. + absl::SleepFor(absl::Seconds(1)); + + snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + newCurrEstab = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab")); + newEstabResets = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Tcp", "EstabResets")); + + EXPECT_EQ(oldCurrEstab, newCurrEstab); + EXPECT_EQ(oldEstabResets, newEstabResets - 2); +} + +TEST(ProcNetSnmp, UdpNoPorts_NoRandomSave) { + // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. + DisableSave ds; + + uint64_t oldOutDatagrams; + uint64_t oldNoPorts; + auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + oldOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); + oldNoPorts = + ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Udp", "NoPorts")); + + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); + + struct sockaddr_in sin = { + .sin_family = AF_INET, + .sin_port = htons(4444), + }; + ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); + ASSERT_THAT(sendto(s.get(), "a", 1, 0, (struct sockaddr *)&sin, sizeof(sin)), + SyscallSucceedsWithValue(1)); + + uint64_t newOutDatagrams; + uint64_t newNoPorts; + snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + newOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); + newNoPorts = + ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Udp", "NoPorts")); + + EXPECT_EQ(oldOutDatagrams, newOutDatagrams - 1); + EXPECT_EQ(oldNoPorts, newNoPorts - 1); +} + +TEST(ProcNetSnmp, UdpIn) { + // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. + const DisableSave ds; + + uint64_t oldOutDatagrams; + uint64_t oldInDatagrams; + auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + oldOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); + oldInDatagrams = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Udp", "InDatagrams")); + + std::cerr << "snmp: " << std::endl << snmp << std::endl; + FileDescriptor server = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); + struct sockaddr_in sin = { + .sin_family = AF_INET, + .sin_port = htons(0), + }; + ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); + ASSERT_THAT(bind(server.get(), (struct sockaddr *)&sin, sizeof(sin)), + SyscallSucceeds()); + // Get the port bound by the server socket. + socklen_t addrlen = sizeof(sin); + ASSERT_THAT( + getsockname(server.get(), reinterpret_cast<sockaddr *>(&sin), &addrlen), + SyscallSucceeds()); + + FileDescriptor client = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); + ASSERT_THAT( + sendto(client.get(), "a", 1, 0, (struct sockaddr *)&sin, sizeof(sin)), + SyscallSucceedsWithValue(1)); + + char buf[128]; + ASSERT_THAT(recvfrom(server.get(), buf, sizeof(buf), 0, NULL, NULL), + SyscallSucceedsWithValue(1)); + + uint64_t newOutDatagrams; + uint64_t newInDatagrams; + snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); + std::cerr << "new snmp: " << std::endl << snmp << std::endl; + newOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); + newInDatagrams = ASSERT_NO_ERRNO_AND_VALUE( + GetSNMPMetricFromProc(snmp, "Udp", "InDatagrams")); + + EXPECT_EQ(oldOutDatagrams, newOutDatagrams - 1); + EXPECT_EQ(oldInDatagrams, newInDatagrams - 1); +} + } // namespace } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/proc_net_tcp.cc b/test/syscalls/linux/proc_net_tcp.cc index f61795592..5b6e3e3cd 100644 --- a/test/syscalls/linux/proc_net_tcp.cc +++ b/test/syscalls/linux/proc_net_tcp.cc @@ -12,13 +12,13 @@ // See the License for the specific language governing permissions and // limitations under the License. +#include <netinet/tcp.h> #include <sys/socket.h> #include <sys/stat.h> #include <sys/types.h> #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/numbers.h" #include "absl/strings/str_join.h" #include "absl/strings/str_split.h" diff --git a/test/syscalls/linux/proc_net_udp.cc b/test/syscalls/linux/proc_net_udp.cc index 369df8e0e..786b4b4af 100644 --- a/test/syscalls/linux/proc_net_udp.cc +++ b/test/syscalls/linux/proc_net_udp.cc @@ -12,13 +12,13 @@ // See the License for the specific language governing permissions and // limitations under the License. +#include <netinet/tcp.h> #include <sys/socket.h> #include <sys/stat.h> #include <sys/types.h> #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/numbers.h" #include "absl/strings/str_join.h" #include "absl/strings/str_split.h" diff --git a/test/syscalls/linux/proc_net_unix.cc b/test/syscalls/linux/proc_net_unix.cc index 83dbd1364..66db0acaa 100644 --- a/test/syscalls/linux/proc_net_unix.cc +++ b/test/syscalls/linux/proc_net_unix.cc @@ -13,7 +13,6 @@ // limitations under the License. #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/numbers.h" #include "absl/strings/str_format.h" #include "absl/strings/str_join.h" diff --git a/test/syscalls/linux/pty.cc b/test/syscalls/linux/pty.cc index 99a0df235..dafe64d20 100644 --- a/test/syscalls/linux/pty.cc +++ b/test/syscalls/linux/pty.cc @@ -70,6 +70,8 @@ constexpr absl::Duration kTimeout = absl::Seconds(20); // The maximum line size in bytes returned per read from a pty file. constexpr int kMaxLineSize = 4096; +constexpr char kMasterPath[] = "/dev/ptmx"; + // glibc defines its own, different, version of struct termios. We care about // what the kernel does, not glibc. #define KERNEL_NCCS 19 @@ -376,9 +378,25 @@ PosixErrorOr<size_t> PollAndReadFd(int fd, void* buf, size_t count, return PosixError(ETIMEDOUT, "Poll timed out"); } +TEST(PtyTrunc, Truncate) { + // Opening PTYs with O_TRUNC shouldn't cause an error, but calls to + // (f)truncate should. + FileDescriptor master = + ASSERT_NO_ERRNO_AND_VALUE(Open(kMasterPath, O_RDWR | O_TRUNC)); + int n = ASSERT_NO_ERRNO_AND_VALUE(SlaveID(master)); + std::string spath = absl::StrCat("/dev/pts/", n); + FileDescriptor slave = + ASSERT_NO_ERRNO_AND_VALUE(Open(spath, O_RDWR | O_NONBLOCK | O_TRUNC)); + + EXPECT_THAT(truncate(kMasterPath, 0), SyscallFailsWithErrno(EINVAL)); + EXPECT_THAT(truncate(spath.c_str(), 0), SyscallFailsWithErrno(EINVAL)); + EXPECT_THAT(ftruncate(master.get(), 0), SyscallFailsWithErrno(EINVAL)); + EXPECT_THAT(ftruncate(slave.get(), 0), SyscallFailsWithErrno(EINVAL)); +} + TEST(BasicPtyTest, StatUnopenedMaster) { struct stat s; - ASSERT_THAT(stat("/dev/ptmx", &s), SyscallSucceeds()); + ASSERT_THAT(stat(kMasterPath, &s), SyscallSucceeds()); EXPECT_EQ(s.st_rdev, makedev(TTYAUX_MAJOR, kPtmxMinor)); EXPECT_EQ(s.st_size, 0); diff --git a/test/syscalls/linux/pwrite64.cc b/test/syscalls/linux/pwrite64.cc index e1603fc2d..b48fe540d 100644 --- a/test/syscalls/linux/pwrite64.cc +++ b/test/syscalls/linux/pwrite64.cc @@ -19,7 +19,6 @@ #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/pwritev2.cc b/test/syscalls/linux/pwritev2.cc index f6a0fc96c..1dbc0d6df 100644 --- a/test/syscalls/linux/pwritev2.cc +++ b/test/syscalls/linux/pwritev2.cc @@ -21,7 +21,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/file_base.h" #include "test/util/file_descriptor.h" #include "test/util/temp_path.h" diff --git a/test/syscalls/linux/raw_socket_icmp.cc b/test/syscalls/linux/raw_socket_icmp.cc index 8bcaba6f1..3de898df7 100644 --- a/test/syscalls/linux/raw_socket_icmp.cc +++ b/test/syscalls/linux/raw_socket_icmp.cc @@ -129,7 +129,7 @@ TEST_F(RawSocketICMPTest, SendAndReceiveBadChecksum) { EXPECT_THAT(RetryEINTR(recv)(s_, recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } -// + // Send and receive an ICMP packet. TEST_F(RawSocketICMPTest, SendAndReceive) { SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); diff --git a/test/syscalls/linux/read.cc b/test/syscalls/linux/read.cc index 4430fa3c2..2633ba31b 100644 --- a/test/syscalls/linux/read.cc +++ b/test/syscalls/linux/read.cc @@ -14,6 +14,7 @@ #include <fcntl.h> #include <unistd.h> + #include <vector> #include "gtest/gtest.h" diff --git a/test/syscalls/linux/readv.cc b/test/syscalls/linux/readv.cc index f327ec3a9..4069cbc7e 100644 --- a/test/syscalls/linux/readv.cc +++ b/test/syscalls/linux/readv.cc @@ -19,7 +19,6 @@ #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/file_base.h" #include "test/syscalls/linux/readv_common.h" #include "test/util/file_descriptor.h" diff --git a/test/syscalls/linux/readv_common.cc b/test/syscalls/linux/readv_common.cc index 35d2dd9e3..491d5f40f 100644 --- a/test/syscalls/linux/readv_common.cc +++ b/test/syscalls/linux/readv_common.cc @@ -19,13 +19,53 @@ #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/file_base.h" #include "test/util/test_util.h" namespace gvisor { namespace testing { +// MatchesStringLength checks that a tuple argument of (struct iovec *, int) +// corresponding to an iovec array and its length, contains data that matches +// the string length strlen. +MATCHER_P(MatchesStringLength, strlen, "") { + struct iovec* iovs = arg.first; + int niov = arg.second; + int offset = 0; + for (int i = 0; i < niov; i++) { + offset += iovs[i].iov_len; + } + if (offset != static_cast<int>(strlen)) { + *result_listener << offset; + return false; + } + return true; +} + +// MatchesStringValue checks that a tuple argument of (struct iovec *, int) +// corresponding to an iovec array and its length, contains data that matches +// the string value str. +MATCHER_P(MatchesStringValue, str, "") { + struct iovec* iovs = arg.first; + int len = strlen(str); + int niov = arg.second; + int offset = 0; + for (int i = 0; i < niov; i++) { + struct iovec iov = iovs[i]; + if (len < offset) { + *result_listener << "strlen " << len << " < offset " << offset; + return false; + } + if (strncmp(static_cast<char*>(iov.iov_base), &str[offset], iov.iov_len)) { + absl::string_view iovec_string(static_cast<char*>(iov.iov_base), + iov.iov_len); + *result_listener << iovec_string << " @offset " << offset; + return false; + } + offset += iov.iov_len; + } + return true; +} + extern const char kReadvTestData[] = "127.0.0.1 localhost" "" diff --git a/test/syscalls/linux/readv_socket.cc b/test/syscalls/linux/readv_socket.cc index 3c315cc02..dd6fb7008 100644 --- a/test/syscalls/linux/readv_socket.cc +++ b/test/syscalls/linux/readv_socket.cc @@ -19,8 +19,6 @@ #include <unistd.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/file_base.h" #include "test/syscalls/linux/readv_common.h" #include "test/util/test_util.h" @@ -29,9 +27,30 @@ namespace testing { namespace { -class ReadvSocketTest : public SocketTest { +class ReadvSocketTest : public ::testing::Test { + public: void SetUp() override { - SocketTest::SetUp(); + test_unix_stream_socket_[0] = -1; + test_unix_stream_socket_[1] = -1; + test_unix_dgram_socket_[0] = -1; + test_unix_dgram_socket_[1] = -1; + test_unix_seqpacket_socket_[0] = -1; + test_unix_seqpacket_socket_[1] = -1; + + ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, test_unix_stream_socket_), + SyscallSucceeds()); + ASSERT_THAT(fcntl(test_unix_stream_socket_[0], F_SETFL, O_NONBLOCK), + SyscallSucceeds()); + ASSERT_THAT(socketpair(AF_UNIX, SOCK_DGRAM, 0, test_unix_dgram_socket_), + SyscallSucceeds()); + ASSERT_THAT(fcntl(test_unix_dgram_socket_[0], F_SETFL, O_NONBLOCK), + SyscallSucceeds()); + ASSERT_THAT( + socketpair(AF_UNIX, SOCK_SEQPACKET, 0, test_unix_seqpacket_socket_), + SyscallSucceeds()); + ASSERT_THAT(fcntl(test_unix_seqpacket_socket_[0], F_SETFL, O_NONBLOCK), + SyscallSucceeds()); + ASSERT_THAT( write(test_unix_stream_socket_[1], kReadvTestData, kReadvTestDataSize), SyscallSucceedsWithValue(kReadvTestDataSize)); @@ -41,11 +60,22 @@ class ReadvSocketTest : public SocketTest { ASSERT_THAT(write(test_unix_seqpacket_socket_[1], kReadvTestData, kReadvTestDataSize), SyscallSucceedsWithValue(kReadvTestDataSize)); - // FIXME(b/69821513): Enable when possible. - // ASSERT_THAT(write(test_tcp_socket_[1], kReadvTestData, - // kReadvTestDataSize), - // SyscallSucceedsWithValue(kReadvTestDataSize)); } + + void TearDown() override { + close(test_unix_stream_socket_[0]); + close(test_unix_stream_socket_[1]); + + close(test_unix_dgram_socket_[0]); + close(test_unix_dgram_socket_[1]); + + close(test_unix_seqpacket_socket_[0]); + close(test_unix_seqpacket_socket_[1]); + } + + int test_unix_stream_socket_[2]; + int test_unix_dgram_socket_[2]; + int test_unix_seqpacket_socket_[2]; }; TEST_F(ReadvSocketTest, ReadOneBufferPerByte_StreamSocket) { diff --git a/test/syscalls/linux/rename.cc b/test/syscalls/linux/rename.cc index c9d76c2e2..833c0dc4f 100644 --- a/test/syscalls/linux/rename.cc +++ b/test/syscalls/linux/rename.cc @@ -14,10 +14,10 @@ #include <fcntl.h> #include <stdio.h> + #include <string> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/string_view.h" #include "test/util/capability_util.h" #include "test/util/cleanup.h" diff --git a/test/syscalls/linux/rseq.cc b/test/syscalls/linux/rseq.cc new file mode 100644 index 000000000..106c045e3 --- /dev/null +++ b/test/syscalls/linux/rseq.cc @@ -0,0 +1,198 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <errno.h> +#include <signal.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> + +#include "gtest/gtest.h" +#include "test/syscalls/linux/rseq/test.h" +#include "test/syscalls/linux/rseq/uapi.h" +#include "test/util/logging.h" +#include "test/util/multiprocess_util.h" +#include "test/util/test_util.h" + +namespace gvisor { +namespace testing { + +namespace { + +// Syscall test for rseq (restartable sequences). +// +// We must be very careful about how these tests are written. Each thread may +// only have one struct rseq registration, which may be done automatically at +// thread start (as of 2019-11-13, glibc does *not* support rseq and thus does +// not do so). +// +// Testing of rseq is thus done primarily in a child process with no +// registration. This means exec'ing a nostdlib binary, as rseq registration can +// only be cleared by execve (or knowing the old rseq address), and glibc (based +// on the current unmerged patches) register rseq before calling main()). + +int RSeq(struct rseq* rseq, uint32_t rseq_len, int flags, uint32_t sig) { + return syscall(kRseqSyscall, rseq, rseq_len, flags, sig); +} + +// Returns true if this kernel supports the rseq syscall. +PosixErrorOr<bool> RSeqSupported() { + // We have to be careful here, there are three possible cases: + // + // 1. rseq is not supported -> ENOSYS + // 2. rseq is supported and not registered -> success, but we should + // unregister. + // 3. rseq is supported and registered -> EINVAL (most likely). + + // The only validation done on new registrations is that rseq is aligned and + // writable. + rseq rseq = {}; + int ret = RSeq(&rseq, sizeof(rseq), 0, 0); + if (ret == 0) { + // Successfully registered, rseq is supported. Unregister. + ret = RSeq(&rseq, sizeof(rseq), kRseqFlagUnregister, 0); + if (ret != 0) { + return PosixError(errno); + } + return true; + } + + switch (errno) { + case ENOSYS: + // Not supported. + return false; + case EINVAL: + // Supported, but already registered. EINVAL returned because we provided + // a different address. + return true; + default: + // Unknown error. + return PosixError(errno); + } +} + +constexpr char kRseqBinary[] = "test/syscalls/linux/rseq/rseq"; + +void RunChildTest(std::string test_case, int want_status) { + std::string path = RunfilePath(kRseqBinary); + + pid_t child_pid = -1; + int execve_errno = 0; + auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( + ForkAndExec(path, {path, test_case}, {}, &child_pid, &execve_errno)); + + ASSERT_GT(child_pid, 0); + ASSERT_EQ(execve_errno, 0); + + int status = 0; + ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); + ASSERT_EQ(status, want_status); +} + +// Test that rseq must be aligned. +TEST(RseqTest, Unaligned) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestUnaligned, 0); +} + +// Sanity test that registration works. +TEST(RseqTest, Register) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestRegister, 0); +} + +// Registration can't be done twice. +TEST(RseqTest, DoubleRegister) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestDoubleRegister, 0); +} + +// Registration can be done again after unregister. +TEST(RseqTest, RegisterUnregister) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestRegisterUnregister, 0); +} + +// The pointer to rseq must match on register/unregister. +TEST(RseqTest, UnregisterDifferentPtr) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestUnregisterDifferentPtr, 0); +} + +// The signature must match on register/unregister. +TEST(RseqTest, UnregisterDifferentSignature) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestUnregisterDifferentSignature, 0); +} + +// The CPU ID is initialized. +TEST(RseqTest, CPU) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestCPU, 0); +} + +// Critical section is eventually aborted. +TEST(RseqTest, Abort) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestAbort, 0); +} + +// Abort may be before the critical section. +TEST(RseqTest, AbortBefore) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestAbortBefore, 0); +} + +// Signature must match. +TEST(RseqTest, AbortSignature) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestAbortSignature, SIGSEGV); +} + +// Abort must not be in the critical section. +TEST(RseqTest, AbortPreCommit) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestAbortPreCommit, SIGSEGV); +} + +// rseq.rseq_cs is cleared on abort. +TEST(RseqTest, AbortClearsCS) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestAbortClearsCS, 0); +} + +// rseq.rseq_cs is cleared on abort outside of critical section. +TEST(RseqTest, InvalidAbortClearsCS) { + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); + + RunChildTest(kRseqTestInvalidAbortClearsCS, 0); +} + +} // namespace + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/rseq/BUILD b/test/syscalls/linux/rseq/BUILD new file mode 100644 index 000000000..5cfe4e56f --- /dev/null +++ b/test/syscalls/linux/rseq/BUILD @@ -0,0 +1,59 @@ +# This package contains a standalone rseq test binary. This binary must not +# depend on libc, which might use rseq itself. + +load("@bazel_tools//tools/cpp:cc_flags_supplier.bzl", "cc_flags_supplier") +load("@rules_cc//cc:defs.bzl", "cc_library") + +package(licenses = ["notice"]) + +genrule( + name = "rseq_binary", + srcs = [ + "critical.h", + "critical.S", + "rseq.cc", + "syscalls.h", + "start.S", + "test.h", + "types.h", + "uapi.h", + ], + outs = ["rseq"], + cmd = " ".join([ + "$(CC)", + "$(CC_FLAGS) ", + "-I.", + "-Wall", + "-Werror", + "-O2", + "-std=c++17", + "-static", + "-nostdlib", + "-ffreestanding", + "-o", + "$(location rseq)", + "$(location critical.S)", + "$(location rseq.cc)", + "$(location start.S)", + ]), + toolchains = [ + ":no_pie_cc_flags", + "@bazel_tools//tools/cpp:current_cc_toolchain", + ], + visibility = ["//:sandbox"], +) + +cc_flags_supplier( + name = "no_pie_cc_flags", + features = ["-pie"], +) + +cc_library( + name = "lib", + testonly = 1, + hdrs = [ + "test.h", + "uapi.h", + ], + visibility = ["//:sandbox"], +) diff --git a/test/syscalls/linux/rseq/critical.S b/test/syscalls/linux/rseq/critical.S new file mode 100644 index 000000000..8c0687e6d --- /dev/null +++ b/test/syscalls/linux/rseq/critical.S @@ -0,0 +1,66 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Restartable sequences critical sections. + +// Loops continuously until aborted. +// +// void rseq_loop(struct rseq* r, struct rseq_cs* cs) + + .text + .globl rseq_loop + .type rseq_loop, @function + +rseq_loop: + jmp begin + + // Abort block before the critical section. + // Abort signature is 4 nops for simplicity. + .byte 0x90, 0x90, 0x90, 0x90 + .globl rseq_loop_early_abort +rseq_loop_early_abort: + ret + +begin: + // r->rseq_cs = cs + movq %rsi, 8(%rdi) + + // N.B. rseq_cs will be cleared by any preempt, even outside the critical + // section. Thus it must be set in or immediately before the critical section + // to ensure it is not cleared before the section begins. + .globl rseq_loop_start +rseq_loop_start: + jmp rseq_loop_start + + // "Pre-commit": extra instructions inside the critical section. These are + // used as the abort point in TestAbortPreCommit, which is not valid. + .globl rseq_loop_pre_commit +rseq_loop_pre_commit: + // Extra abort signature + nop for TestAbortPostCommit. + .byte 0x90, 0x90, 0x90, 0x90 + nop + + // "Post-commit": never reached in this case. + .globl rseq_loop_post_commit +rseq_loop_post_commit: + + // Abort signature is 4 nops for simplicity. + .byte 0x90, 0x90, 0x90, 0x90 + + .globl rseq_loop_abort +rseq_loop_abort: + ret + + .size rseq_loop,.-rseq_loop + .section .note.GNU-stack,"",@progbits diff --git a/test/syscalls/linux/rseq/critical.h b/test/syscalls/linux/rseq/critical.h new file mode 100644 index 000000000..ac987a25e --- /dev/null +++ b/test/syscalls/linux/rseq/critical.h @@ -0,0 +1,39 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_CRITICAL_H_ +#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_CRITICAL_H_ + +#include "test/syscalls/linux/rseq/types.h" +#include "test/syscalls/linux/rseq/uapi.h" + +constexpr uint32_t kRseqSignature = 0x90909090; + +extern "C" { + +extern void rseq_loop(struct rseq* r, struct rseq_cs* cs); +extern void* rseq_loop_early_abort; +extern void* rseq_loop_start; +extern void* rseq_loop_pre_commit; +extern void* rseq_loop_post_commit; +extern void* rseq_loop_abort; + +extern int rseq_getpid(struct rseq* r, struct rseq_cs* cs); +extern void* rseq_getpid_start; +extern void* rseq_getpid_post_commit; +extern void* rseq_getpid_abort; + +} // extern "C" + +#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_CRITICAL_H_ diff --git a/test/syscalls/linux/rseq/rseq.cc b/test/syscalls/linux/rseq/rseq.cc new file mode 100644 index 000000000..f036db26d --- /dev/null +++ b/test/syscalls/linux/rseq/rseq.cc @@ -0,0 +1,366 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "test/syscalls/linux/rseq/critical.h" +#include "test/syscalls/linux/rseq/syscalls.h" +#include "test/syscalls/linux/rseq/test.h" +#include "test/syscalls/linux/rseq/types.h" +#include "test/syscalls/linux/rseq/uapi.h" + +namespace gvisor { +namespace testing { + +extern "C" int main(int argc, char** argv, char** envp); + +// Standalone initialization before calling main(). +extern "C" void __init(uintptr_t* sp) { + int argc = sp[0]; + char** argv = reinterpret_cast<char**>(&sp[1]); + char** envp = &argv[argc + 1]; + + // Call main() and exit. + sys_exit_group(main(argc, argv, envp)); + + // sys_exit_group does not return +} + +int strcmp(const char* s1, const char* s2) { + const unsigned char* p1 = reinterpret_cast<const unsigned char*>(s1); + const unsigned char* p2 = reinterpret_cast<const unsigned char*>(s2); + + while (*p1 == *p2) { + if (!*p1) { + return 0; + } + ++p1; + ++p2; + } + return static_cast<int>(*p1) - static_cast<int>(*p2); +} + +int sys_rseq(struct rseq* rseq, uint32_t rseq_len, int flags, uint32_t sig) { + return raw_syscall(kRseqSyscall, rseq, rseq_len, flags, sig); +} + +// Test that rseq must be aligned. +int TestUnaligned() { + constexpr uintptr_t kRequiredAlignment = alignof(rseq); + + char buf[2 * kRequiredAlignment] = {}; + uintptr_t ptr = reinterpret_cast<uintptr_t>(&buf[0]); + if ((ptr & (kRequiredAlignment - 1)) == 0) { + // buf is already aligned. Misalign it. + ptr++; + } + + int ret = sys_rseq(reinterpret_cast<rseq*>(ptr), sizeof(rseq), 0, 0); + if (sys_errno(ret) != EINVAL) { + return 1; + } + return 0; +} + +// Sanity test that registration works. +int TestRegister() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { + return 1; + } + return 0; +}; + +// Registration can't be done twice. +int TestDoubleRegister() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { + return 1; + } + + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != EBUSY) { + return 1; + } + + return 0; +}; + +// Registration can be done again after unregister. +int TestRegisterUnregister() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { + return 1; + } + + if (int ret = sys_rseq(&r, sizeof(r), kRseqFlagUnregister, 0); + sys_errno(ret) != 0) { + return 1; + } + + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { + return 1; + } + + return 0; +}; + +// The pointer to rseq must match on register/unregister. +int TestUnregisterDifferentPtr() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { + return 1; + } + + struct rseq r2 = {}; + if (int ret = sys_rseq(&r2, sizeof(r2), kRseqFlagUnregister, 0); + sys_errno(ret) != EINVAL) { + return 1; + } + + return 0; +}; + +// The signature must match on register/unregister. +int TestUnregisterDifferentSignature() { + constexpr int kSignature = 0; + + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kSignature); sys_errno(ret) != 0) { + return 1; + } + + if (int ret = sys_rseq(&r, sizeof(r), kRseqFlagUnregister, kSignature + 1); + sys_errno(ret) != EPERM) { + return 1; + } + + return 0; +}; + +// The CPU ID is initialized. +int TestCPU() { + struct rseq r = {}; + r.cpu_id = kRseqCPUIDUninitialized; + + if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { + return 1; + } + + if (__atomic_load_n(&r.cpu_id, __ATOMIC_RELAXED) < 0) { + return 1; + } + if (__atomic_load_n(&r.cpu_id_start, __ATOMIC_RELAXED) < 0) { + return 1; + } + + return 0; +}; + +// Critical section is eventually aborted. +int TestAbort() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); + sys_errno(ret) != 0) { + return 1; + } + + struct rseq_cs cs = {}; + cs.version = 0; + cs.flags = 0; + cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - + reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); + + // Loops until abort. If this returns then abort occurred. + rseq_loop(&r, &cs); + + return 0; +}; + +// Abort may be before the critical section. +int TestAbortBefore() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); + sys_errno(ret) != 0) { + return 1; + } + + struct rseq_cs cs = {}; + cs.version = 0; + cs.flags = 0; + cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - + reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_early_abort); + + // Loops until abort. If this returns then abort occurred. + rseq_loop(&r, &cs); + + return 0; +}; + +// Signature must match. +int TestAbortSignature() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature + 1); + sys_errno(ret) != 0) { + return 1; + } + + struct rseq_cs cs = {}; + cs.version = 0; + cs.flags = 0; + cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - + reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); + + // Loops until abort. This should SIGSEGV on abort. + rseq_loop(&r, &cs); + + return 1; +}; + +// Abort must not be in the critical section. +int TestAbortPreCommit() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature + 1); + sys_errno(ret) != 0) { + return 1; + } + + struct rseq_cs cs = {}; + cs.version = 0; + cs.flags = 0; + cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - + reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_pre_commit); + + // Loops until abort. This should SIGSEGV on abort. + rseq_loop(&r, &cs); + + return 1; +}; + +// rseq.rseq_cs is cleared on abort. +int TestAbortClearsCS() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); + sys_errno(ret) != 0) { + return 1; + } + + struct rseq_cs cs = {}; + cs.version = 0; + cs.flags = 0; + cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - + reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); + + // Loops until abort. If this returns then abort occurred. + rseq_loop(&r, &cs); + + if (__atomic_load_n(&r.rseq_cs, __ATOMIC_RELAXED)) { + return 1; + } + + return 0; +}; + +// rseq.rseq_cs is cleared on abort outside of critical section. +int TestInvalidAbortClearsCS() { + struct rseq r = {}; + if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); + sys_errno(ret) != 0) { + return 1; + } + + struct rseq_cs cs = {}; + cs.version = 0; + cs.flags = 0; + cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - + reinterpret_cast<uint64_t>(&rseq_loop_start); + cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); + + __atomic_store_n(&r.rseq_cs, &cs, __ATOMIC_RELAXED); + + // When the next abort condition occurs, the kernel will clear cs once it + // determines we aren't in the critical section. + while (1) { + if (!__atomic_load_n(&r.rseq_cs, __ATOMIC_RELAXED)) { + break; + } + } + + return 0; +}; + +// Exit codes: +// 0 - Pass +// 1 - Fail +// 2 - Missing argument +// 3 - Unknown test case +extern "C" int main(int argc, char** argv, char** envp) { + if (argc != 2) { + // Usage: rseq <test case> + return 2; + } + + if (strcmp(argv[1], kRseqTestUnaligned) == 0) { + return TestUnaligned(); + } + if (strcmp(argv[1], kRseqTestRegister) == 0) { + return TestRegister(); + } + if (strcmp(argv[1], kRseqTestDoubleRegister) == 0) { + return TestDoubleRegister(); + } + if (strcmp(argv[1], kRseqTestRegisterUnregister) == 0) { + return TestRegisterUnregister(); + } + if (strcmp(argv[1], kRseqTestUnregisterDifferentPtr) == 0) { + return TestUnregisterDifferentPtr(); + } + if (strcmp(argv[1], kRseqTestUnregisterDifferentSignature) == 0) { + return TestUnregisterDifferentSignature(); + } + if (strcmp(argv[1], kRseqTestCPU) == 0) { + return TestCPU(); + } + if (strcmp(argv[1], kRseqTestAbort) == 0) { + return TestAbort(); + } + if (strcmp(argv[1], kRseqTestAbortBefore) == 0) { + return TestAbortBefore(); + } + if (strcmp(argv[1], kRseqTestAbortSignature) == 0) { + return TestAbortSignature(); + } + if (strcmp(argv[1], kRseqTestAbortPreCommit) == 0) { + return TestAbortPreCommit(); + } + if (strcmp(argv[1], kRseqTestAbortClearsCS) == 0) { + return TestAbortClearsCS(); + } + if (strcmp(argv[1], kRseqTestInvalidAbortClearsCS) == 0) { + return TestInvalidAbortClearsCS(); + } + + return 3; +} + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/rseq/start.S b/test/syscalls/linux/rseq/start.S new file mode 100644 index 000000000..b9611b276 --- /dev/null +++ b/test/syscalls/linux/rseq/start.S @@ -0,0 +1,45 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + + + .text + .align 4 + .type _start,@function + .globl _start + +_start: + movq %rsp,%rdi + call __init + hlt + + .size _start,.-_start + .section .note.GNU-stack,"",@progbits + + .text + .globl raw_syscall + .type raw_syscall, @function + +raw_syscall: + mov %rdi,%rax // syscall # + mov %rsi,%rdi // arg0 + mov %rdx,%rsi // arg1 + mov %rcx,%rdx // arg2 + mov %r8,%r10 // arg3 (goes in r10 instead of rcx for system calls) + mov %r9,%r8 // arg4 + mov 0x8(%rsp),%r9 // arg5 + syscall + ret + + .size raw_syscall,.-raw_syscall + .section .note.GNU-stack,"",@progbits diff --git a/test/syscalls/linux/rseq/syscalls.h b/test/syscalls/linux/rseq/syscalls.h new file mode 100644 index 000000000..e5299c188 --- /dev/null +++ b/test/syscalls/linux/rseq/syscalls.h @@ -0,0 +1,66 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_SYSCALLS_H_ +#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_SYSCALLS_H_ + +#include "test/syscalls/linux/rseq/types.h" + +#ifdef __x86_64__ +// Syscall numbers. +constexpr int kGetpid = 39; +constexpr int kExitGroup = 231; +#else +#error "Unknown architecture" +#endif + +namespace gvisor { +namespace testing { + +// Standalone system call interfaces. +// Note that these are all "raw" system call interfaces which encode +// errors by setting the return value to a small negative number. +// Use sys_errno() to check system call return values for errors. + +// Maximum Linux error number. +constexpr int kMaxErrno = 4095; + +// Errno values. +#define EPERM 1 +#define EFAULT 14 +#define EBUSY 16 +#define EINVAL 22 + +// Get the error number from a raw system call return value. +// Returns a positive error number or 0 if there was no error. +static inline int sys_errno(uintptr_t rval) { + if (rval >= static_cast<uintptr_t>(-kMaxErrno)) { + return -static_cast<int>(rval); + } + return 0; +} + +extern "C" uintptr_t raw_syscall(int number, ...); + +static inline void sys_exit_group(int status) { + raw_syscall(kExitGroup, status); +} +static inline int sys_getpid() { + return static_cast<int>(raw_syscall(kGetpid)); +} + +} // namespace testing +} // namespace gvisor + +#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_SYSCALLS_H_ diff --git a/test/syscalls/linux/rseq/test.h b/test/syscalls/linux/rseq/test.h new file mode 100644 index 000000000..3b7bb74b1 --- /dev/null +++ b/test/syscalls/linux/rseq/test.h @@ -0,0 +1,43 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TEST_H_ +#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TEST_H_ + +namespace gvisor { +namespace testing { + +// Test cases supported by rseq binary. + +inline constexpr char kRseqTestUnaligned[] = "unaligned"; +inline constexpr char kRseqTestRegister[] = "register"; +inline constexpr char kRseqTestDoubleRegister[] = "double-register"; +inline constexpr char kRseqTestRegisterUnregister[] = "register-unregister"; +inline constexpr char kRseqTestUnregisterDifferentPtr[] = + "unregister-different-ptr"; +inline constexpr char kRseqTestUnregisterDifferentSignature[] = + "unregister-different-signature"; +inline constexpr char kRseqTestCPU[] = "cpu"; +inline constexpr char kRseqTestAbort[] = "abort"; +inline constexpr char kRseqTestAbortBefore[] = "abort-before"; +inline constexpr char kRseqTestAbortSignature[] = "abort-signature"; +inline constexpr char kRseqTestAbortPreCommit[] = "abort-precommit"; +inline constexpr char kRseqTestAbortClearsCS[] = "abort-clears-cs"; +inline constexpr char kRseqTestInvalidAbortClearsCS[] = + "invalid-abort-clears-cs"; + +} // namespace testing +} // namespace gvisor + +#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TEST_H_ diff --git a/test/syscalls/linux/rseq/types.h b/test/syscalls/linux/rseq/types.h new file mode 100644 index 000000000..b6afe9817 --- /dev/null +++ b/test/syscalls/linux/rseq/types.h @@ -0,0 +1,31 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TYPES_H_ +#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TYPES_H_ + +using size_t = __SIZE_TYPE__; +using uintptr_t = __UINTPTR_TYPE__; + +using uint8_t = __UINT8_TYPE__; +using uint16_t = __UINT16_TYPE__; +using uint32_t = __UINT32_TYPE__; +using uint64_t = __UINT64_TYPE__; + +using int8_t = __INT8_TYPE__; +using int16_t = __INT16_TYPE__; +using int32_t = __INT32_TYPE__; +using int64_t = __INT64_TYPE__; + +#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TYPES_H_ diff --git a/test/syscalls/linux/rseq/uapi.h b/test/syscalls/linux/rseq/uapi.h new file mode 100644 index 000000000..e3ff0579a --- /dev/null +++ b/test/syscalls/linux/rseq/uapi.h @@ -0,0 +1,54 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ +#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ + +// User-kernel ABI for restartable sequences. + +// Standard types. +// +// N.B. This header will be included in targets that do have the standard +// library, so we can't shadow the standard type names. +using __u32 = __UINT32_TYPE__; +using __u64 = __UINT64_TYPE__; + +#ifdef __x86_64__ +// Syscall numbers. +constexpr int kRseqSyscall = 334; +#else +#error "Unknown architecture" +#endif // __x86_64__ + +struct rseq_cs { + __u32 version; + __u32 flags; + __u64 start_ip; + __u64 post_commit_offset; + __u64 abort_ip; +} __attribute__((aligned(4 * sizeof(__u64)))); + +// N.B. alignment is enforced by the kernel. +struct rseq { + __u32 cpu_id_start; + __u32 cpu_id; + struct rseq_cs* rseq_cs; + __u32 flags; +} __attribute__((aligned(4 * sizeof(__u64)))); + +constexpr int kRseqFlagUnregister = 1 << 0; + +constexpr int kRseqCPUIDUninitialized = -1; + +#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ diff --git a/test/syscalls/linux/seccomp.cc b/test/syscalls/linux/seccomp.cc index e77586852..7e41fe7d8 100644 --- a/test/syscalls/linux/seccomp.cc +++ b/test/syscalls/linux/seccomp.cc @@ -25,6 +25,7 @@ #include <time.h> #include <ucontext.h> #include <unistd.h> + #include <atomic> #include "gmock/gmock.h" diff --git a/test/syscalls/linux/select.cc b/test/syscalls/linux/select.cc index 88c010aec..424e2a67f 100644 --- a/test/syscalls/linux/select.cc +++ b/test/syscalls/linux/select.cc @@ -16,12 +16,12 @@ #include <sys/resource.h> #include <sys/select.h> #include <sys/time.h> + #include <climits> #include <csignal> #include <cstdio> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/time/time.h" #include "test/syscalls/linux/base_poll_test.h" #include "test/util/file_descriptor.h" diff --git a/test/syscalls/linux/semaphore.cc b/test/syscalls/linux/semaphore.cc index 40c57f543..e9b131ca9 100644 --- a/test/syscalls/linux/semaphore.cc +++ b/test/syscalls/linux/semaphore.cc @@ -447,9 +447,8 @@ TEST(SemaphoreTest, SemCtlGetPidFork) { const pid_t child_pid = fork(); if (child_pid == 0) { - ASSERT_THAT(semctl(sem.get(), 0, SETVAL, 1), SyscallSucceeds()); - ASSERT_THAT(semctl(sem.get(), 0, GETPID), - SyscallSucceedsWithValue(getpid())); + TEST_PCHECK(semctl(sem.get(), 0, SETVAL, 1) == 0); + TEST_PCHECK(semctl(sem.get(), 0, GETPID) == getpid()); _exit(0); } diff --git a/test/syscalls/linux/sendfile_socket.cc b/test/syscalls/linux/sendfile_socket.cc index 1c56540bc..3331288b7 100644 --- a/test/syscalls/linux/sendfile_socket.cc +++ b/test/syscalls/linux/sendfile_socket.cc @@ -185,7 +185,7 @@ TEST_P(SendFileTest, Shutdown) { // Create a socket. std::tuple<int, int> fds = ASSERT_NO_ERRNO_AND_VALUE(Sockets()); const FileDescriptor client(std::get<0>(fds)); - FileDescriptor server(std::get<1>(fds)); // non-const, released below. + FileDescriptor server(std::get<1>(fds)); // non-const, reset below. // If this is a TCP socket, then turn off linger. if (GetParam() == AF_INET) { @@ -210,14 +210,14 @@ TEST_P(SendFileTest, Shutdown) { // checking the contents (other tests do that), so we just re-use the same // buffer as above. ScopedThread t([&]() { - int done = 0; + size_t done = 0; while (done < data.size()) { - int n = read(server.get(), data.data(), data.size()); + int n = RetryEINTR(read)(server.get(), data.data(), data.size()); ASSERT_THAT(n, SyscallSucceeds()); done += n; } // Close the server side socket. - ASSERT_THAT(close(server.release()), SyscallSucceeds()); + server.reset(); }); // Continuously stream from the file to the socket. Note we do not assert diff --git a/test/syscalls/linux/shm.cc b/test/syscalls/linux/shm.cc index eb7a3966f..7ba752599 100644 --- a/test/syscalls/linux/shm.cc +++ b/test/syscalls/linux/shm.cc @@ -13,7 +13,6 @@ // limitations under the License. #include <stdio.h> - #include <sys/ipc.h> #include <sys/mman.h> #include <sys/shm.h> diff --git a/test/syscalls/linux/sigaltstack.cc b/test/syscalls/linux/sigaltstack.cc index 69b6e4f90..a778fa639 100644 --- a/test/syscalls/linux/sigaltstack.cc +++ b/test/syscalls/linux/sigaltstack.cc @@ -22,7 +22,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/util/cleanup.h" #include "test/util/fs_util.h" #include "test/util/multiprocess_util.h" @@ -96,13 +95,7 @@ TEST(SigaltstackTest, ResetByExecve) { auto const cleanup_sigstack = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaltstack(stack)); - std::string full_path; - char* test_src = getenv("TEST_SRCDIR"); - if (test_src) { - full_path = JoinPath(test_src, "../../linux/sigaltstack_check"); - } - - ASSERT_FALSE(full_path.empty()); + std::string full_path = RunfilePath("test/syscalls/linux/sigaltstack_check"); pid_t child_pid = -1; int execve_errno = 0; diff --git a/test/syscalls/linux/signalfd.cc b/test/syscalls/linux/signalfd.cc index 9379d5878..09ecad34a 100644 --- a/test/syscalls/linux/signalfd.cc +++ b/test/syscalls/linux/signalfd.cc @@ -24,7 +24,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/synchronization/mutex.h" #include "test/util/file_descriptor.h" #include "test/util/posix_error.h" diff --git a/test/syscalls/linux/socket_bind_to_device.cc b/test/syscalls/linux/socket_bind_to_device.cc index d20821cac..6b27f6eab 100644 --- a/test/syscalls/linux/socket_bind_to_device.cc +++ b/test/syscalls/linux/socket_bind_to_device.cc @@ -32,7 +32,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_bind_to_device_util.h" #include "test/syscalls/linux/socket_test_util.h" diff --git a/test/syscalls/linux/socket_bind_to_device_distribution.cc b/test/syscalls/linux/socket_bind_to_device_distribution.cc index 4d2400328..5767181a1 100644 --- a/test/syscalls/linux/socket_bind_to_device_distribution.cc +++ b/test/syscalls/linux/socket_bind_to_device_distribution.cc @@ -33,7 +33,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_bind_to_device_util.h" #include "test/syscalls/linux/socket_test_util.h" diff --git a/test/syscalls/linux/socket_bind_to_device_sequence.cc b/test/syscalls/linux/socket_bind_to_device_sequence.cc index a7365d139..34b1058a9 100644 --- a/test/syscalls/linux/socket_bind_to_device_sequence.cc +++ b/test/syscalls/linux/socket_bind_to_device_sequence.cc @@ -33,7 +33,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_bind_to_device_util.h" #include "test/syscalls/linux/socket_test_util.h" @@ -98,12 +97,22 @@ class BindToDeviceSequenceTest : public ::testing::TestWithParam<SocketKind> { sockets_to_close_.erase(socket_id); } - // Bind a socket with the reuse option and bind_to_device options. Checks + // SetDevice changes the bind_to_device option. It does not bind or re-bind. + void SetDevice(int socket_id, int device_id) { + auto socket_fd = sockets_to_close_[socket_id]->get(); + string device_name; + ASSERT_NO_FATAL_FAILURE(GetDevice(device_id, &device_name)); + EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_BINDTODEVICE, + device_name.c_str(), device_name.size() + 1), + SyscallSucceedsWithValue(0)); + } + + // Bind a socket with the reuse options and bind_to_device options. Checks // that all steps succeed and that the bind command's error matches want. // Sets the socket_id to uniquely identify the socket bound if it is not // nullptr. - void BindSocket(bool reuse, int device_id = 0, int want = 0, - int *socket_id = nullptr) { + void BindSocket(bool reuse_port, bool reuse_addr, int device_id = 0, + int want = 0, int *socket_id = nullptr) { next_socket_id_++; sockets_to_close_[next_socket_id_] = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); auto socket_fd = sockets_to_close_[next_socket_id_]->get(); @@ -111,13 +120,20 @@ class BindToDeviceSequenceTest : public ::testing::TestWithParam<SocketKind> { *socket_id = next_socket_id_; } - // If reuse is indicated, do that. - if (reuse) { + // If reuse_port is indicated, do that. + if (reuse_port) { EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, sizeof(kSockOptOn)), SyscallSucceedsWithValue(0)); } + // If reuse_addr is indicated, do that. + if (reuse_addr) { + EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceedsWithValue(0)); + } + // If the device is non-zero, bind to that device. if (device_id != 0) { string device_name; @@ -183,129 +199,308 @@ class BindToDeviceSequenceTest : public ::testing::TestWithParam<SocketKind> { }; TEST_P(BindToDeviceSequenceTest, BindTwiceWithDeviceFails) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 3)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 3, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 3)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 3, EADDRINUSE)); } TEST_P(BindToDeviceSequenceTest, BindToDevice) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 1)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 2)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 1)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 2)); } TEST_P(BindToDeviceSequenceTest, BindToDeviceAndThenWithoutDevice) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); } TEST_P(BindToDeviceSequenceTest, BindWithoutDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse */ false)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); } TEST_P(BindToDeviceSequenceTest, BindWithDevice) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123, 0)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 456, 0)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 789, 0)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 456, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 789, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); } TEST_P(BindToDeviceSequenceTest, BindWithReuse) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse */ true)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123)); ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse */ true, /* bind_to_device */ 0)); + BindSocket(/* reusePort */ true, /* reuse_addr */ false)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, + /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 0)); } TEST_P(BindToDeviceSequenceTest, BindingWithReuseAndDevice) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 456)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse */ true)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 789)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 999, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 456)); + ASSERT_NO_FATAL_FAILURE( + BindSocket(/* reuse_port */ true, /* reuse_addr */ false)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 789)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 999, EADDRINUSE)); } TEST_P(BindToDeviceSequenceTest, MixingReuseAndNotReuseByBindingToDevice) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123, 0)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 456, 0)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 789, 0)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 999, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 123, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 456, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 789, 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 999, 0)); } TEST_P(BindToDeviceSequenceTest, CannotBindTo0AfterMixingReuseAndNotReuse) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 456)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 456)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); } TEST_P(BindToDeviceSequenceTest, BindAndRelease) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); int to_release; - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 0, 0, &to_release)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 345, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 789)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, 0, &to_release)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 345, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 789)); // Release the bind to device 0 and try again. ASSERT_NO_FATAL_FAILURE(ReleaseSocket(to_release)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 345)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 345)); } TEST_P(BindToDeviceSequenceTest, BindTwiceWithReuseOnce) { + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindWithReuseAddr) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ false, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse */ true, /* bind_to_device */ 0, EADDRINUSE)); + BindSocket(/* reusePort */ false, /* reuse_addr */ true)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 123, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 0)); +} + +TEST_P(BindToDeviceSequenceTest, + CannotBindTo0AfterMixingReuseAddrAndNotReuseAddr) { + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 456)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ true, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindReuseAddrReusePortThenReusePort) { + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ true, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindReuseAddrReusePortThenReuseAddr) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindDoubleReuseAddrReusePortThenReusePort) { + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ true, /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ true, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindDoubleReuseAddrReusePortThenReuseAddr) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ true, /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindReusePortThenReuseAddrReusePort) { + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ true, + /* bind_to_device */ 0, EADDRINUSE)); +} + +TEST_P(BindToDeviceSequenceTest, BindReuseAddrThenReuseAddr) { + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0, EADDRINUSE)); +} + +// This behavior seems like a bug? +TEST_P(BindToDeviceSequenceTest, + BindReuseAddrThenReuseAddrReusePortThenReuseAddr) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ true, + /* bind_to_device */ 0)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, + /* reuse_addr */ false, + /* bind_to_device */ 0)); +} + +// Repro test for gvisor.dev/issue/1217. Not replicated in ports_test.go as this +// test is different from the others and wouldn't fit well there. +TEST_P(BindToDeviceSequenceTest, BindAndReleaseDifferentDevice) { + int to_release; + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 3, 0, &to_release)); + ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, + /* reuse_addr */ false, + /* bind_to_device */ 3, EADDRINUSE)); + // Change the device. Since the socket was already bound, this should have no + // effect. + SetDevice(to_release, 2); + // Release the bind to device 3 and try again. + ASSERT_NO_FATAL_FAILURE(ReleaseSocket(to_release)); + ASSERT_NO_FATAL_FAILURE(BindSocket( + /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 3)); } INSTANTIATE_TEST_SUITE_P(BindToDeviceTest, BindToDeviceSequenceTest, diff --git a/test/syscalls/linux/socket_blocking.cc b/test/syscalls/linux/socket_blocking.cc index 00c50d1bf..7e88aa2d9 100644 --- a/test/syscalls/linux/socket_blocking.cc +++ b/test/syscalls/linux/socket_blocking.cc @@ -17,10 +17,10 @@ #include <sys/socket.h> #include <sys/types.h> #include <sys/un.h> + #include <cstdio> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/time/clock.h" #include "absl/time/time.h" #include "test/syscalls/linux/socket_test_util.h" diff --git a/test/syscalls/linux/socket_generic.cc b/test/syscalls/linux/socket_generic.cc index 51d614639..e8f24a59e 100644 --- a/test/syscalls/linux/socket_generic.cc +++ b/test/syscalls/linux/socket_generic.cc @@ -20,7 +20,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/str_format.h" #include "absl/strings/string_view.h" #include "test/syscalls/linux/socket_test_util.h" diff --git a/test/syscalls/linux/socket_inet_loopback.cc b/test/syscalls/linux/socket_inet_loopback.cc index 322ee07ad..619d41901 100644 --- a/test/syscalls/linux/socket_inet_loopback.cc +++ b/test/syscalls/linux/socket_inet_loopback.cc @@ -14,9 +14,9 @@ #include <arpa/inet.h> #include <netinet/in.h> +#include <netinet/tcp.h> #include <poll.h> #include <string.h> -#include <sys/socket.h> #include <atomic> #include <iostream> @@ -30,6 +30,7 @@ #include "gtest/gtest.h" #include "absl/memory/memory.h" #include "absl/strings/str_cat.h" +#include "absl/time/clock.h" #include "absl/time/time.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/file_descriptor.h" @@ -43,6 +44,8 @@ namespace testing { namespace { +using ::testing::Gt; + PosixErrorOr<uint16_t> AddrPort(int family, sockaddr_storage const& addr) { switch (family) { case AF_INET: @@ -99,19 +102,17 @@ TEST(BadSocketPairArgs, ValidateErrForBadCallsToSocketPair) { SyscallFailsWithErrno(EAFNOSUPPORT)); } -TEST_P(SocketInetLoopbackTest, TCP) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - +void tcpSimpleConnectTest(TestAddress const& listener, + TestAddress const& connector, bool unbound) { // Create the listening socket. const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); + if (!unbound) { + ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), + listener.addr_len), + SyscallSucceeds()); + } ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); // Get the port bound by the listening socket. @@ -145,6 +146,23 @@ TEST_P(SocketInetLoopbackTest, TCP) { ASSERT_THAT(shutdown(conn_fd.get(), SHUT_RDWR), SyscallSucceeds()); } +TEST_P(SocketInetLoopbackTest, TCP) { + auto const& param = GetParam(); + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + tcpSimpleConnectTest(listener, connector, true); +} + +TEST_P(SocketInetLoopbackTest, TCPListenUnbound) { + auto const& param = GetParam(); + + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + tcpSimpleConnectTest(listener, connector, false); +} + TEST_P(SocketInetLoopbackTest, TCPListenClose) { auto const& param = GetParam(); @@ -203,7 +221,7 @@ TEST_P(SocketInetLoopbackTest, TCPListenClose) { } // TODO(b/138400178): Fix cooperative S/R failure when ds.reset() is invoked // before function end. - // ds.reset() + // ds.reset(); } TEST_P(SocketInetLoopbackTest, TCPbacklog) { @@ -266,6 +284,394 @@ TEST_P(SocketInetLoopbackTest, TCPbacklog) { } } +// TCPFinWait2Test creates a pair of connected sockets then closes one end to +// trigger FIN_WAIT2 state for the closed endpoint. Then it binds the same local +// IP/port on a new socket and tries to connect. The connect should fail w/ +// an EADDRINUSE. Then we wait till the FIN_WAIT2 timeout is over and try the +// connect again with a new socket and this time it should succeed. +// +// TCP timers are not S/R today, this can cause this test to be flaky when run +// under random S/R due to timer being reset on a restore. +TEST_P(SocketInetLoopbackTest, TCPFinWait2Test_NoRandomSave) { + auto const& param = GetParam(); + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + // Create the listening socket. + const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); + sockaddr_storage listen_addr = listener.addr; + ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), + listener.addr_len), + SyscallSucceeds()); + ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); + + // Get the port bound by the listening socket. + socklen_t addrlen = listener.addr_len; + ASSERT_THAT(getsockname(listen_fd.get(), + reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), + SyscallSucceeds()); + + uint16_t const port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); + + // Connect to the listening socket. + FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + // Lower FIN_WAIT2 state to 5 seconds for test. + constexpr int kTCPLingerTimeout = 5; + EXPECT_THAT(setsockopt(conn_fd.get(), IPPROTO_TCP, TCP_LINGER2, + &kTCPLingerTimeout, sizeof(kTCPLingerTimeout)), + SyscallSucceedsWithValue(0)); + + sockaddr_storage conn_addr = connector.addr; + ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); + ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceeds()); + + // Accept the connection. + auto accepted = + ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); + + // Get the address/port bound by the connecting socket. + sockaddr_storage conn_bound_addr; + socklen_t conn_addrlen = connector.addr_len; + ASSERT_THAT( + getsockname(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), + &conn_addrlen), + SyscallSucceeds()); + + // close the connecting FD to trigger FIN_WAIT2 on the connected fd. + conn_fd.reset(); + + // Now bind and connect a new socket. + const FileDescriptor conn_fd2 = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + // Disable cooperative saves after this point. As a save between the first + // bind/connect and the second one can cause the linger timeout timer to + // be restarted causing the final bind/connect to fail. + DisableSave ds; + + // TODO(gvisor.dev/issue/1030): Portmanager does not track all 5 tuple + // reservations which causes the bind() to succeed on gVisor but connect + // correctly fails. + if (IsRunningOnGvisor()) { + ASSERT_THAT( + bind(conn_fd2.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), + conn_addrlen), + SyscallSucceeds()); + ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + conn_addrlen), + SyscallFailsWithErrno(EADDRINUSE)); + } else { + ASSERT_THAT( + bind(conn_fd2.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), + conn_addrlen), + SyscallFailsWithErrno(EADDRINUSE)); + } + + // Sleep for a little over the linger timeout to reduce flakiness in + // save/restore tests. + absl::SleepFor(absl::Seconds(kTCPLingerTimeout + 1)); + + ds.reset(); + + if (!IsRunningOnGvisor()) { + ASSERT_THAT( + bind(conn_fd2.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), + conn_addrlen), + SyscallSucceeds()); + } + ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + conn_addrlen), + SyscallSucceeds()); +} + +// TCPLinger2TimeoutAfterClose creates a pair of connected sockets +// then closes one end to trigger FIN_WAIT2 state for the closed endpont. +// It then sleeps for the TCP_LINGER2 timeout and verifies that bind/ +// connecting the same address succeeds. +// +// TCP timers are not S/R today, this can cause this test to be flaky when run +// under random S/R due to timer being reset on a restore. +TEST_P(SocketInetLoopbackTest, TCPLinger2TimeoutAfterClose_NoRandomSave) { + auto const& param = GetParam(); + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + // Create the listening socket. + const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); + sockaddr_storage listen_addr = listener.addr; + ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), + listener.addr_len), + SyscallSucceeds()); + ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); + + // Get the port bound by the listening socket. + socklen_t addrlen = listener.addr_len; + ASSERT_THAT(getsockname(listen_fd.get(), + reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), + SyscallSucceeds()); + + uint16_t const port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); + + // Connect to the listening socket. + FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + sockaddr_storage conn_addr = connector.addr; + ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); + ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceeds()); + + // Accept the connection. + auto accepted = + ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); + + // Get the address/port bound by the connecting socket. + sockaddr_storage conn_bound_addr; + socklen_t conn_addrlen = connector.addr_len; + ASSERT_THAT( + getsockname(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), + &conn_addrlen), + SyscallSucceeds()); + + constexpr int kTCPLingerTimeout = 5; + EXPECT_THAT(setsockopt(conn_fd.get(), IPPROTO_TCP, TCP_LINGER2, + &kTCPLingerTimeout, sizeof(kTCPLingerTimeout)), + SyscallSucceedsWithValue(0)); + + // close the connecting FD to trigger FIN_WAIT2 on the connected fd. + conn_fd.reset(); + + absl::SleepFor(absl::Seconds(kTCPLingerTimeout + 1)); + + // Now bind and connect a new socket and verify that we can immediately + // rebind the address bound by the conn_fd as it never entered TIME_WAIT. + const FileDescriptor conn_fd2 = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + ASSERT_THAT(bind(conn_fd2.get(), + reinterpret_cast<sockaddr*>(&conn_bound_addr), conn_addrlen), + SyscallSucceeds()); + ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + conn_addrlen), + SyscallSucceeds()); +} + +// TCPResetAfterClose creates a pair of connected sockets then closes +// one end to trigger FIN_WAIT2 state for the closed endpoint verifies +// that we generate RSTs for any new data after the socket is fully +// closed. +TEST_P(SocketInetLoopbackTest, TCPResetAfterClose) { + auto const& param = GetParam(); + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + // Create the listening socket. + const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); + sockaddr_storage listen_addr = listener.addr; + ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), + listener.addr_len), + SyscallSucceeds()); + ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); + + // Get the port bound by the listening socket. + socklen_t addrlen = listener.addr_len; + ASSERT_THAT(getsockname(listen_fd.get(), + reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), + SyscallSucceeds()); + + uint16_t const port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); + + // Connect to the listening socket. + FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + sockaddr_storage conn_addr = connector.addr; + ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); + ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceeds()); + + // Accept the connection. + auto accepted = + ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); + + // close the connecting FD to trigger FIN_WAIT2 on the connected fd. + conn_fd.reset(); + + int data = 1234; + + // Now send data which should trigger a RST as the other end should + // have timed out and closed the socket. + EXPECT_THAT(RetryEINTR(send)(accepted.get(), &data, sizeof(data), 0), + SyscallSucceeds()); + // Sleep for a shortwhile to get a RST back. + absl::SleepFor(absl::Seconds(1)); + + // Try writing again and we should get an EPIPE back. + EXPECT_THAT(RetryEINTR(send)(accepted.get(), &data, sizeof(data), 0), + SyscallFailsWithErrno(EPIPE)); + + // Trying to read should return zero as the other end did send + // us a FIN. We do it twice to verify that the RST does not cause an + // ECONNRESET on the read after EOF has been read by applicaiton. + EXPECT_THAT(RetryEINTR(recv)(accepted.get(), &data, sizeof(data), 0), + SyscallSucceedsWithValue(0)); + EXPECT_THAT(RetryEINTR(recv)(accepted.get(), &data, sizeof(data), 0), + SyscallSucceedsWithValue(0)); +} + +// This test is disabled under random save as the the restore run +// results in the stack.Seed() being different which can cause +// sequence number of final connect to be one that is considered +// old and can cause the test to be flaky. +TEST_P(SocketInetLoopbackTest, TCPTimeWaitTest_NoRandomSave) { + auto const& param = GetParam(); + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + // Create the listening socket. + const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); + sockaddr_storage listen_addr = listener.addr; + ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), + listener.addr_len), + SyscallSucceeds()); + ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); + + // Get the port bound by the listening socket. + socklen_t addrlen = listener.addr_len; + ASSERT_THAT(getsockname(listen_fd.get(), + reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), + SyscallSucceeds()); + + uint16_t const port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); + + // Connect to the listening socket. + FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + // We disable saves after this point as a S/R causes the netstack seed + // to be regenerated which changes what ports/ISN is picked for a given + // tuple (src ip,src port, dst ip, dst port). This can cause the final + // SYN to use a sequence number that looks like one from the current + // connection in TIME_WAIT and will not be accepted causing the test + // to timeout. + // + // TODO(gvisor.dev/issue/940): S/R portSeed/portHint + DisableSave ds; + sockaddr_storage conn_addr = connector.addr; + ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); + ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceeds()); + + // Accept the connection. + auto accepted = + ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); + + // Get the address/port bound by the connecting socket. + sockaddr_storage conn_bound_addr; + socklen_t conn_addrlen = connector.addr_len; + ASSERT_THAT( + getsockname(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), + &conn_addrlen), + SyscallSucceeds()); + + // close the accept FD to trigger TIME_WAIT on the accepted socket which + // should cause the conn_fd to follow CLOSE_WAIT->LAST_ACK->CLOSED instead of + // TIME_WAIT. + accepted.reset(); + absl::SleepFor(absl::Seconds(1)); + conn_fd.reset(); + absl::SleepFor(absl::Seconds(1)); + + // Now bind and connect a new socket and verify that we can immediately + // rebind the address bound by the conn_fd as it never entered TIME_WAIT. + const FileDescriptor conn_fd2 = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + ASSERT_THAT(bind(conn_fd2.get(), + reinterpret_cast<sockaddr*>(&conn_bound_addr), conn_addrlen), + SyscallSucceeds()); + ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + conn_addrlen), + SyscallSucceeds()); +} + +TEST_P(SocketInetLoopbackTest, AcceptedInheritsTCPUserTimeout) { + auto const& param = GetParam(); + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + + // Create the listening socket. + const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); + sockaddr_storage listen_addr = listener.addr; + ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), + listener.addr_len), + SyscallSucceeds()); + ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); + + // Get the port bound by the listening socket. + socklen_t addrlen = listener.addr_len; + ASSERT_THAT(getsockname(listen_fd.get(), + reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), + SyscallSucceeds()); + + const uint16_t port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); + + // Set the userTimeout on the listening socket. + constexpr int kUserTimeout = 10; + ASSERT_THAT(setsockopt(listen_fd.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &kUserTimeout, sizeof(kUserTimeout)), + SyscallSucceeds()); + + // Connect to the listening socket. + FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( + Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); + + sockaddr_storage conn_addr = connector.addr; + ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); + ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceeds()); + + // Accept the connection. + auto accepted = + ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); + // Verify that the accepted socket inherited the user timeout set on + // listening socket. + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(accepted.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, &get, &get_len), + SyscallSucceeds()); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kUserTimeout); +} + INSTANTIATE_TEST_SUITE_P( All, SocketInetLoopbackTest, ::testing::Values( @@ -298,7 +704,9 @@ INSTANTIATE_TEST_SUITE_P( using SocketInetReusePortTest = ::testing::TestWithParam<TestParam>; -TEST_P(SocketInetReusePortTest, TcpPortReuseMultiThread) { +// TODO(gvisor.dev/issue/940): Remove _NoRandomSave when portHint/stack.Seed is +// saved/restored. +TEST_P(SocketInetReusePortTest, TcpPortReuseMultiThread_NoRandomSave) { auto const& param = GetParam(); TestAddress const& listener = param.listener; @@ -306,6 +714,7 @@ TEST_P(SocketInetReusePortTest, TcpPortReuseMultiThread) { sockaddr_storage listen_addr = listener.addr; sockaddr_storage conn_addr = connector.addr; constexpr int kThreadCount = 3; + constexpr int kConnectAttempts = 4096; // Create the listening socket. FileDescriptor listener_fds[kThreadCount]; @@ -320,7 +729,7 @@ TEST_P(SocketInetReusePortTest, TcpPortReuseMultiThread) { ASSERT_THAT( bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), SyscallSucceeds()); - ASSERT_THAT(listen(fd, 40), SyscallSucceeds()); + ASSERT_THAT(listen(fd, kConnectAttempts / 3), SyscallSucceeds()); // On the first bind we need to determine which port was bound. if (i != 0) { @@ -339,7 +748,6 @@ TEST_P(SocketInetReusePortTest, TcpPortReuseMultiThread) { ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); } - constexpr int kConnectAttempts = 10000; std::atomic<int> connects_received = ATOMIC_VAR_INIT(0); std::unique_ptr<ScopedThread> listen_thread[kThreadCount]; int accept_counts[kThreadCount] = {}; @@ -516,6 +924,115 @@ TEST_P(SocketInetReusePortTest, UdpPortReuseMultiThread) { EquivalentWithin((kConnectAttempts / kThreadCount), 0.10)); } +TEST_P(SocketInetReusePortTest, UdpPortReuseMultiThreadShort) { + auto const& param = GetParam(); + + TestAddress const& listener = param.listener; + TestAddress const& connector = param.connector; + sockaddr_storage listen_addr = listener.addr; + sockaddr_storage conn_addr = connector.addr; + constexpr int kThreadCount = 3; + + // TODO(b/141211329): endpointsByNic.seed has to be saved/restored. + const DisableSave ds141211329; + + // Create listening sockets. + FileDescriptor listener_fds[kThreadCount]; + for (int i = 0; i < kThreadCount; i++) { + listener_fds[i] = + ASSERT_NO_ERRNO_AND_VALUE(Socket(listener.family(), SOCK_DGRAM, 0)); + int fd = listener_fds[i].get(); + + ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT( + bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), + SyscallSucceeds()); + + // On the first bind we need to determine which port was bound. + if (i != 0) { + continue; + } + + // Get the port bound by the listening socket. + socklen_t addrlen = listener.addr_len; + ASSERT_THAT( + getsockname(listener_fds[0].get(), + reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), + SyscallSucceeds()); + uint16_t const port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); + ASSERT_NO_ERRNO(SetAddrPort(listener.family(), &listen_addr, port)); + ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); + } + + constexpr int kConnectAttempts = 10; + FileDescriptor client_fds[kConnectAttempts]; + + // Do the first run without save/restore. + DisableSave ds; + for (int i = 0; i < kConnectAttempts; i++) { + client_fds[i] = + ASSERT_NO_ERRNO_AND_VALUE(Socket(connector.family(), SOCK_DGRAM, 0)); + EXPECT_THAT(RetryEINTR(sendto)(client_fds[i].get(), &i, sizeof(i), 0, + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceedsWithValue(sizeof(i))); + } + ds.reset(); + + // Check that a mapping of client and server sockets has + // not been change after save/restore. + for (int i = 0; i < kConnectAttempts; i++) { + EXPECT_THAT(RetryEINTR(sendto)(client_fds[i].get(), &i, sizeof(i), 0, + reinterpret_cast<sockaddr*>(&conn_addr), + connector.addr_len), + SyscallSucceedsWithValue(sizeof(i))); + } + + struct pollfd pollfds[kThreadCount]; + for (int i = 0; i < kThreadCount; i++) { + pollfds[i].fd = listener_fds[i].get(); + pollfds[i].events = POLLIN; + } + + std::map<uint16_t, int> portToFD; + + int received = 0; + while (received < kConnectAttempts * 2) { + ASSERT_THAT(poll(pollfds, kThreadCount, -1), + SyscallSucceedsWithValue(Gt(0))); + + for (int i = 0; i < kThreadCount; i++) { + if ((pollfds[i].revents & POLLIN) == 0) { + continue; + } + + received++; + + const int fd = pollfds[i].fd; + struct sockaddr_storage addr = {}; + socklen_t addrlen = sizeof(addr); + int data; + EXPECT_THAT(RetryEINTR(recvfrom)( + fd, &data, sizeof(data), 0, + reinterpret_cast<struct sockaddr*>(&addr), &addrlen), + SyscallSucceedsWithValue(sizeof(data))); + uint16_t const port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(connector.family(), addr)); + auto prev_port = portToFD.find(port); + // Check that all packets from one client have been delivered to the + // same server socket. + if (prev_port == portToFD.end()) { + portToFD[port] = fd; + } else { + EXPECT_EQ(portToFD[port], fd); + } + } + } +} + INSTANTIATE_TEST_SUITE_P( All, SocketInetReusePortTest, ::testing::Values( @@ -713,10 +1230,9 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V6OnlyV6AnyReservesV6) { sockaddr_storage addr_dual = test_addr_dual.addr; const FileDescriptor fd_dual = ASSERT_NO_ERRNO_AND_VALUE( Socket(test_addr_dual.family(), param.type, 0)); - int one = 1; - EXPECT_THAT( - setsockopt(fd_dual.get(), IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(one)), - SyscallSucceeds()); + EXPECT_THAT(setsockopt(fd_dual.get(), IPPROTO_IPV6, IPV6_V6ONLY, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); ASSERT_THAT(bind(fd_dual.get(), reinterpret_cast<sockaddr*>(&addr_dual), test_addr_dual.addr_len), SyscallSucceeds()); @@ -764,7 +1280,8 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V6OnlyV6AnyReservesV6) { TEST_P(SocketMultiProtocolInetLoopbackTest, V6EphemeralPortReserved) { auto const& param = GetParam(); - // FIXME(b/114268588) + // FIXME(b/76031995): Support disabling SO_REUSEADDR for TCP sockets and make + // it disabled by default. SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_STREAM); for (int i = 0; true; i++) { @@ -862,10 +1379,76 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V6EphemeralPortReserved) { } } +TEST_P(SocketMultiProtocolInetLoopbackTest, V6EphemeralPortReservedReuseAddr) { + auto const& param = GetParam(); + + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_DGRAM); + + // Bind the v6 loopback on a dual stack socket. + TestAddress const& test_addr = V6Loopback(); + sockaddr_storage bound_addr = test_addr.addr; + const FileDescriptor bound_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), + test_addr.addr_len), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(bound_fd.get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Listen iff TCP. + if (param.type == SOCK_STREAM) { + ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); + } + + // Get the port that we bound. + socklen_t bound_addr_len = test_addr.addr_len; + ASSERT_THAT( + getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), + &bound_addr_len), + SyscallSucceeds()); + + // Connect to bind an ephemeral port. + const FileDescriptor connected_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(setsockopt(connected_fd.get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(connect(connected_fd.get(), + reinterpret_cast<sockaddr*>(&bound_addr), bound_addr_len), + SyscallSucceeds()); + + // Get the ephemeral port. + sockaddr_storage connected_addr = {}; + socklen_t connected_addr_len = sizeof(connected_addr); + ASSERT_THAT(getsockname(connected_fd.get(), + reinterpret_cast<sockaddr*>(&connected_addr), + &connected_addr_len), + SyscallSucceeds()); + uint16_t const ephemeral_port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); + + // Verify that we actually got an ephemeral port. + ASSERT_NE(ephemeral_port, 0); + + // Verify that the ephemeral port is not reserved. + const FileDescriptor checking_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(setsockopt(checking_fd.get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + EXPECT_THAT( + bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), + connected_addr_len), + SyscallSucceeds()); +} + TEST_P(SocketMultiProtocolInetLoopbackTest, V4MappedEphemeralPortReserved) { auto const& param = GetParam(); - // FIXME(b/114268588) + // FIXME(b/76031995): Support disabling SO_REUSEADDR for TCP sockets and make + // it disabled by default. SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_STREAM); for (int i = 0; true; i++) { @@ -965,9 +1548,8 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V4MappedEphemeralPortReserved) { // v6-only socket. const FileDescriptor fd_v6_only_any = ASSERT_NO_ERRNO_AND_VALUE( Socket(test_addr_v6_any.family(), param.type, 0)); - int one = 1; EXPECT_THAT(setsockopt(fd_v6_only_any.get(), IPPROTO_IPV6, IPV6_V6ONLY, - &one, sizeof(one)), + &kSockOptOn, sizeof(kSockOptOn)), SyscallSucceeds()); ret = bind(fd_v6_only_any.get(), reinterpret_cast<sockaddr*>(&addr_v6_any), @@ -986,10 +1568,78 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V4MappedEphemeralPortReserved) { } } +TEST_P(SocketMultiProtocolInetLoopbackTest, + V4MappedEphemeralPortReservedResueAddr) { + auto const& param = GetParam(); + + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_DGRAM); + + // Bind the v4 loopback on a dual stack socket. + TestAddress const& test_addr = V4MappedLoopback(); + sockaddr_storage bound_addr = test_addr.addr; + const FileDescriptor bound_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), + test_addr.addr_len), + SyscallSucceeds()); + + ASSERT_THAT(setsockopt(bound_fd.get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Listen iff TCP. + if (param.type == SOCK_STREAM) { + ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); + } + + // Get the port that we bound. + socklen_t bound_addr_len = test_addr.addr_len; + ASSERT_THAT( + getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), + &bound_addr_len), + SyscallSucceeds()); + + // Connect to bind an ephemeral port. + const FileDescriptor connected_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(setsockopt(connected_fd.get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(connect(connected_fd.get(), + reinterpret_cast<sockaddr*>(&bound_addr), bound_addr_len), + SyscallSucceeds()); + + // Get the ephemeral port. + sockaddr_storage connected_addr = {}; + socklen_t connected_addr_len = sizeof(connected_addr); + ASSERT_THAT(getsockname(connected_fd.get(), + reinterpret_cast<sockaddr*>(&connected_addr), + &connected_addr_len), + SyscallSucceeds()); + uint16_t const ephemeral_port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); + + // Verify that we actually got an ephemeral port. + ASSERT_NE(ephemeral_port, 0); + + // Verify that the ephemeral port is not reserved. + const FileDescriptor checking_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(setsockopt(checking_fd.get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + EXPECT_THAT( + bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), + connected_addr_len), + SyscallSucceeds()); +} + TEST_P(SocketMultiProtocolInetLoopbackTest, V4EphemeralPortReserved) { auto const& param = GetParam(); - // FIXME(b/114268588) + // FIXME(b/76031995): Support disabling SO_REUSEADDR for TCP sockets and make + // it disabled by default. SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_STREAM); for (int i = 0; true; i++) { @@ -1090,9 +1740,8 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V4EphemeralPortReserved) { // v6-only socket. const FileDescriptor fd_v6_only_any = ASSERT_NO_ERRNO_AND_VALUE( Socket(test_addr_v6_any.family(), param.type, 0)); - int one = 1; EXPECT_THAT(setsockopt(fd_v6_only_any.get(), IPPROTO_IPV6, IPV6_V6ONLY, - &one, sizeof(one)), + &kSockOptOn, sizeof(kSockOptOn)), SyscallSucceeds()); ret = bind(fd_v6_only_any.get(), reinterpret_cast<sockaddr*>(&addr_v6_any), @@ -1111,6 +1760,75 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, V4EphemeralPortReserved) { } } +TEST_P(SocketMultiProtocolInetLoopbackTest, V4EphemeralPortReservedReuseAddr) { + auto const& param = GetParam(); + + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_DGRAM); + + // Bind the v4 loopback on a v4 socket. + TestAddress const& test_addr = V4Loopback(); + sockaddr_storage bound_addr = test_addr.addr; + const FileDescriptor bound_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + + ASSERT_THAT(setsockopt(bound_fd.get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), + test_addr.addr_len), + SyscallSucceeds()); + + // Listen iff TCP. + if (param.type == SOCK_STREAM) { + ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); + } + + // Get the port that we bound. + socklen_t bound_addr_len = test_addr.addr_len; + ASSERT_THAT( + getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), + &bound_addr_len), + SyscallSucceeds()); + + // Connect to bind an ephemeral port. + const FileDescriptor connected_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + + ASSERT_THAT(setsockopt(connected_fd.get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + ASSERT_THAT(connect(connected_fd.get(), + reinterpret_cast<sockaddr*>(&bound_addr), bound_addr_len), + SyscallSucceeds()); + + // Get the ephemeral port. + sockaddr_storage connected_addr = {}; + socklen_t connected_addr_len = sizeof(connected_addr); + ASSERT_THAT(getsockname(connected_fd.get(), + reinterpret_cast<sockaddr*>(&connected_addr), + &connected_addr_len), + SyscallSucceeds()); + uint16_t const ephemeral_port = + ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); + + // Verify that we actually got an ephemeral port. + ASSERT_NE(ephemeral_port, 0); + + // Verify that the ephemeral port is not reserved. + const FileDescriptor checking_fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); + ASSERT_THAT(setsockopt(checking_fd.get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + EXPECT_THAT( + bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), + connected_addr_len), + SyscallSucceeds()); +} + TEST_P(SocketMultiProtocolInetLoopbackTest, PortReuseTwoSockets) { auto const& param = GetParam(); TestAddress const& test_addr = V4Loopback(); @@ -1197,7 +1915,7 @@ TEST_P(SocketMultiProtocolInetLoopbackTest, NoReusePortFollowingReusePort) { } INSTANTIATE_TEST_SUITE_P( - AllFamlies, SocketMultiProtocolInetLoopbackTest, + AllFamilies, SocketMultiProtocolInetLoopbackTest, ::testing::Values(ProtocolTestParam{"TCP", SOCK_STREAM}, ProtocolTestParam{"UDP", SOCK_DGRAM}), DescribeProtocolTestParam); diff --git a/test/syscalls/linux/socket_ip_loopback_blocking.cc b/test/syscalls/linux/socket_ip_loopback_blocking.cc index d7fc9715b..fda252dd7 100644 --- a/test/syscalls/linux/socket_ip_loopback_blocking.cc +++ b/test/syscalls/linux/socket_ip_loopback_blocking.cc @@ -13,6 +13,7 @@ // limitations under the License. #include <netinet/tcp.h> + #include <vector> #include "test/syscalls/linux/ip_socket_test_util.h" @@ -22,6 +23,7 @@ namespace gvisor { namespace testing { +namespace { std::vector<SocketPairKind> GetSocketPairs() { return VecCat<SocketPairKind>( @@ -42,5 +44,6 @@ INSTANTIATE_TEST_SUITE_P( BlockingIPSockets, BlockingSocketPairTest, ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); +} // namespace } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_generic.cc b/test/syscalls/linux/socket_ip_tcp_generic.cc index bfa7943b1..57ce8e169 100644 --- a/test/syscalls/linux/socket_ip_tcp_generic.cc +++ b/test/syscalls/linux/socket_ip_tcp_generic.cc @@ -24,14 +24,16 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" +#include "absl/time/clock.h" +#include "absl/time/time.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" +#include "test/util/thread_util.h" namespace gvisor { namespace testing { -TEST_P(TCPSocketPairTest, TcpInfoSucceedes) { +TEST_P(TCPSocketPairTest, TcpInfoSucceeds) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); struct tcp_info opt = {}; @@ -40,7 +42,7 @@ TEST_P(TCPSocketPairTest, TcpInfoSucceedes) { SyscallSucceeds()); } -TEST_P(TCPSocketPairTest, ShortTcpInfoSucceedes) { +TEST_P(TCPSocketPairTest, ShortTcpInfoSucceeds) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); struct tcp_info opt = {}; @@ -49,7 +51,7 @@ TEST_P(TCPSocketPairTest, ShortTcpInfoSucceedes) { SyscallSucceeds()); } -TEST_P(TCPSocketPairTest, ZeroTcpInfoSucceedes) { +TEST_P(TCPSocketPairTest, ZeroTcpInfoSucceeds) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); struct tcp_info opt = {}; @@ -244,6 +246,31 @@ TEST_P(TCPSocketPairTest, ShutdownRdAllowsReadOfReceivedDataBeforeEOF) { SyscallSucceedsWithValue(0)); } +// This test verifies that a shutdown(wr) by the server after sending +// data allows the client to still read() the queued data and a client +// close after sending response allows server to read the incoming +// response. +TEST_P(TCPSocketPairTest, ShutdownWrServerClientClose) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + char buf[10] = {}; + ScopedThread t([&]() { + ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + ASSERT_THAT(close(sockets->release_first_fd()), + SyscallSucceedsWithValue(0)); + }); + ASSERT_THAT(RetryEINTR(write)(sockets->second_fd(), buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + ASSERT_THAT(RetryEINTR(shutdown)(sockets->second_fd(), SHUT_WR), + SyscallSucceedsWithValue(0)); + t.Join(); + + ASSERT_THAT(RetryEINTR(read)(sockets->second_fd(), buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); +} + TEST_P(TCPSocketPairTest, ClosedReadNonBlockingSocket) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); @@ -697,5 +724,156 @@ TEST_P(TCPSocketPairTest, SetCongestionControlFailsForUnsupported) { EXPECT_EQ(0, memcmp(got_cc, old_cc, sizeof(old_cc))); } +// Linux and Netstack both default to a 60s TCP_LINGER2 timeout. +constexpr int kDefaultTCPLingerTimeout = 60; + +TEST_P(TCPSocketPairTest, TCPLingerTimeoutDefault) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + int get = -1; + socklen_t get_len = sizeof(get); + EXPECT_THAT( + getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kDefaultTCPLingerTimeout); +} + +TEST_P(TCPSocketPairTest, SetTCPLingerTimeoutZeroOrLess) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + constexpr int kZero = 0; + EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &kZero, + sizeof(kZero)), + SyscallSucceedsWithValue(0)); + + constexpr int kNegative = -1234; + EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, + &kNegative, sizeof(kNegative)), + SyscallSucceedsWithValue(0)); +} + +TEST_P(TCPSocketPairTest, SetTCPLingerTimeoutAboveDefault) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + // Values above the net.ipv4.tcp_fin_timeout are capped to tcp_fin_timeout + // on linux (defaults to 60 seconds on linux). + constexpr int kAboveDefault = kDefaultTCPLingerTimeout + 1; + EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, + &kAboveDefault, sizeof(kAboveDefault)), + SyscallSucceedsWithValue(0)); + + int get = -1; + socklen_t get_len = sizeof(get); + EXPECT_THAT( + getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kDefaultTCPLingerTimeout); +} + +TEST_P(TCPSocketPairTest, SetTCPLingerTimeout) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + // Values above the net.ipv4.tcp_fin_timeout are capped to tcp_fin_timeout + // on linux (defaults to 60 seconds on linux). + constexpr int kTCPLingerTimeout = kDefaultTCPLingerTimeout - 1; + EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, + &kTCPLingerTimeout, sizeof(kTCPLingerTimeout)), + SyscallSucceedsWithValue(0)); + + int get = -1; + socklen_t get_len = sizeof(get); + EXPECT_THAT( + getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kTCPLingerTimeout); +} + +TEST_P(TCPSocketPairTest, TestTCPCloseWithData) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + ScopedThread t([&]() { + // Close one end to trigger sending of a FIN. + ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_WR), SyscallSucceeds()); + char buf[3]; + ASSERT_THAT(read(sockets->second_fd(), buf, 3), + SyscallSucceedsWithValue(3)); + absl::SleepFor(absl::Milliseconds(50)); + ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); + }); + + absl::SleepFor(absl::Milliseconds(50)); + // Send some data then close. + constexpr char kStr[] = "abc"; + ASSERT_THAT(write(sockets->first_fd(), kStr, 3), SyscallSucceedsWithValue(3)); + t.Join(); + ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); +} + +TEST_P(TCPSocketPairTest, TCPUserTimeoutDefault) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &get, &get_len), + SyscallSucceeds()); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, 0); // 0 ms (disabled). +} + +TEST_P(TCPSocketPairTest, SetTCPUserTimeoutZero) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + constexpr int kZero = 0; + ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &kZero, sizeof(kZero)), + SyscallSucceeds()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &get, &get_len), + SyscallSucceeds()); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, 0); // 0 ms (disabled). +} + +TEST_P(TCPSocketPairTest, SetTCPUserTimeoutBelowZero) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + constexpr int kNeg = -10; + EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &kNeg, sizeof(kNeg)), + SyscallFailsWithErrno(EINVAL)); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &get, &get_len), + SyscallSucceeds()); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, 0); // 0 ms (disabled). +} + +TEST_P(TCPSocketPairTest, SetTCPUserTimeoutAboveZero) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + constexpr int kAbove = 10; + ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &kAbove, sizeof(kAbove)), + SyscallSucceeds()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &get, &get_len), + SyscallSucceeds()); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kAbove); +} + } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc b/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc index 0dc274e2d..d11f7cc23 100644 --- a/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc +++ b/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc @@ -13,6 +13,7 @@ // limitations under the License. #include <netinet/tcp.h> + #include <vector> #include "test/syscalls/linux/ip_socket_test_util.h" diff --git a/test/syscalls/linux/socket_ip_tcp_loopback.cc b/test/syscalls/linux/socket_ip_tcp_loopback.cc index 831de53b8..9db3037bc 100644 --- a/test/syscalls/linux/socket_ip_tcp_loopback.cc +++ b/test/syscalls/linux/socket_ip_tcp_loopback.cc @@ -21,6 +21,7 @@ namespace gvisor { namespace testing { +namespace { std::vector<SocketPairKind> GetSocketPairs() { return { @@ -34,5 +35,6 @@ INSTANTIATE_TEST_SUITE_P( AllUnixDomainSockets, AllSocketPairTest, ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); +} // namespace } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc b/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc index cd3ad97d0..fcd20102f 100644 --- a/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc +++ b/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc @@ -13,6 +13,7 @@ // limitations under the License. #include <netinet/tcp.h> + #include <vector> #include "test/syscalls/linux/ip_socket_test_util.h" diff --git a/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc b/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc index 1acdecc17..63a05b799 100644 --- a/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc +++ b/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc @@ -13,6 +13,7 @@ // limitations under the License. #include <netinet/tcp.h> + #include <vector> #include "test/syscalls/linux/ip_socket_test_util.h" diff --git a/test/syscalls/linux/socket_ip_tcp_udp_generic.cc b/test/syscalls/linux/socket_ip_tcp_udp_generic.cc index de63f79d9..f178f1af9 100644 --- a/test/syscalls/linux/socket_ip_tcp_udp_generic.cc +++ b/test/syscalls/linux/socket_ip_tcp_udp_generic.cc @@ -22,7 +22,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_ip_udp_generic.cc b/test/syscalls/linux/socket_ip_udp_generic.cc index 044394ba7..66eb68857 100644 --- a/test/syscalls/linux/socket_ip_udp_generic.cc +++ b/test/syscalls/linux/socket_ip_udp_generic.cc @@ -24,7 +24,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" @@ -36,7 +35,7 @@ TEST_P(UDPSocketPairTest, MulticastTTLDefault) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -53,7 +52,7 @@ TEST_P(UDPSocketPairTest, SetUDPMulticastTTLMin) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -70,7 +69,7 @@ TEST_P(UDPSocketPairTest, SetUDPMulticastTTLMax) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -92,7 +91,7 @@ TEST_P(UDPSocketPairTest, SetUDPMulticastTTLNegativeOne) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -127,7 +126,7 @@ TEST_P(UDPSocketPairTest, SetUDPMulticastTTLChar) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -148,7 +147,7 @@ TEST_P(UDPSocketPairTest, MulticastLoopDefault) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -164,7 +163,7 @@ TEST_P(UDPSocketPairTest, SetMulticastLoop) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -174,7 +173,7 @@ TEST_P(UDPSocketPairTest, SetMulticastLoop) { &kSockOptOn, sizeof(kSockOptOn)), SyscallSucceeds()); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -193,7 +192,7 @@ TEST_P(UDPSocketPairTest, SetMulticastLoopChar) { int get = -1; socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); @@ -203,12 +202,120 @@ TEST_P(UDPSocketPairTest, SetMulticastLoopChar) { &kSockOptOnChar, sizeof(kSockOptOnChar)), SyscallSucceeds()); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, &get, &get_len), SyscallSucceedsWithValue(0)); EXPECT_EQ(get_len, sizeof(get)); EXPECT_EQ(get, kSockOptOn); } +TEST_P(UDPSocketPairTest, ReuseAddrDefault) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOff); +} + +TEST_P(UDPSocketPairTest, SetReuseAddr) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOn); + + ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOff, sizeof(kSockOptOff)), + SyscallSucceeds()); + + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOff); +} + +TEST_P(UDPSocketPairTest, ReusePortDefault) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOff); +} + +TEST_P(UDPSocketPairTest, SetReusePort) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOn); + + ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, + &kSockOptOff, sizeof(kSockOptOff)), + SyscallSucceeds()); + + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOff); +} + +TEST_P(UDPSocketPairTest, SetReuseAddrReusePort) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOn); + + ASSERT_THAT( + getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kSockOptOn); +} + } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_unbound.cc b/test/syscalls/linux/socket_ip_unbound.cc index fa9a9df6f..b6754111f 100644 --- a/test/syscalls/linux/socket_ip_unbound.cc +++ b/test/syscalls/linux/socket_ip_unbound.cc @@ -23,7 +23,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" @@ -355,6 +354,38 @@ TEST_P(IPUnboundSocketTest, InvalidNegativeTOS) { EXPECT_EQ(get, expect); } +TEST_P(IPUnboundSocketTest, NullTOS) { + auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + TOSOption t = GetTOSOption(GetParam().domain); + int set_sz = sizeof(int); + if (GetParam().domain == AF_INET) { + EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, nullptr, set_sz), + SyscallFailsWithErrno(EFAULT)); + } else { // AF_INET6 + // The AF_INET6 behavior is not yet compatible. gVisor will try to read + // optval from user memory at syscall handler, it needs substantial + // refactoring to implement this behavior just for IPv6. + if (IsRunningOnGvisor()) { + EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, nullptr, set_sz), + SyscallFailsWithErrno(EFAULT)); + } else { + // Linux's IPv6 stack treats nullptr optval as input of 0, so the call + // succeeds. (net/ipv6/ipv6_sockglue.c, do_ipv6_setsockopt()) + // + // Linux's implementation would need fixing as passing a nullptr as optval + // and non-zero optlen may not be valid. + EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, nullptr, set_sz), + SyscallSucceedsWithValue(0)); + } + } + socklen_t get_sz = sizeof(int); + EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, nullptr, &get_sz), + SyscallFailsWithErrno(EFAULT)); + int get = -1; + EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, nullptr), + SyscallFailsWithErrno(EFAULT)); +} + INSTANTIATE_TEST_SUITE_P( IPUnboundSockets, IPUnboundSocketTest, ::testing::ValuesIn(VecCat<SocketKind>(VecCat<SocketKind>( diff --git a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc index 3a068aacf..80f12b0a9 100644 --- a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc +++ b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc @@ -18,12 +18,12 @@ #include <sys/socket.h> #include <sys/types.h> #include <sys/un.h> + #include <cstdio> #include <cstring> #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc index 92f03e045..3ac790873 100644 --- a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc +++ b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc @@ -12,10 +12,11 @@ // See the License for the specific language governing permissions and // limitations under the License. +#include "test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h" + #include <vector> #include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound.cc b/test/syscalls/linux/socket_ipv4_udp_unbound.cc index 67d29af0a..aa6fb4e3f 100644 --- a/test/syscalls/linux/socket_ipv4_udp_unbound.cc +++ b/test/syscalls/linux/socket_ipv4_udp_unbound.cc @@ -18,10 +18,11 @@ #include <sys/ioctl.h> #include <sys/socket.h> #include <sys/un.h> + #include <cstdio> #include "gtest/gtest.h" -#include "gtest/gtest.h" +#include "absl/memory/memory.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" @@ -52,26 +53,27 @@ TestAddress V4Broadcast() { // Check that packets are not received without a group membership. Default send // interface configured by bind. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNoGroup) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackNoGroup) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the first FD to the loopback. This is an alternative to // IP_MULTICAST_IF for setting the default send interface. auto sender_addr = V4Loopback(); EXPECT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); // Bind the second FD to the v4 any address. If multicast worked like unicast, // this would ensure that we get the packet. auto receiver_addr = V4Any(); - EXPECT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + EXPECT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -83,33 +85,33 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNoGroup) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we did not receive the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + EXPECT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } // Check that not setting a default send interface prevents multicast packets // from being sent. Group membership interface configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackAddrNoDefaultSendIf) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackAddrNoDefaultSendIf) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the second FD to the v4 any address to ensure that we can receive any // unicast packet. auto receiver_addr = V4Any(); - EXPECT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + EXPECT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -119,8 +121,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackAddrNoDefaultSendIf) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -129,27 +131,27 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackAddrNoDefaultSendIf) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallFailsWithErrno(ENETUNREACH)); + EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallFailsWithErrno(ENETUNREACH)); } // Check that not setting a default send interface prevents multicast packets // from being sent. Group membership interface configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNicNoDefaultSendIf) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackNicNoDefaultSendIf) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the second FD to the v4 any address to ensure that we can receive any // unicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -159,8 +161,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNicNoDefaultSendIf) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -169,35 +171,35 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNicNoDefaultSendIf) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallFailsWithErrno(ENETUNREACH)); + EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallFailsWithErrno(ENETUNREACH)); } // Check that multicast works when the default send interface is configured by // bind and the group membership is configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the first FD to the loopback. This is an alternative to // IP_MULTICAST_IF for setting the default send interface. auto sender_addr = V4Loopback(); ASSERT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -207,8 +209,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackAddr) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -217,43 +219,42 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackAddr) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } // Check that multicast works when the default send interface is configured by // bind and the group membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNic) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackNic) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the first FD to the loopback. This is an alternative to // IP_MULTICAST_IF for setting the default send interface. auto sender_addr = V4Loopback(); ASSERT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -263,8 +264,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNic) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -273,17 +274,15 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNic) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -291,25 +290,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackNic) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in sendto, and the group // membership is configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -319,8 +319,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddr) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -329,17 +329,15 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddr) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -347,25 +345,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddr) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in sendto, and the group // membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNic) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNic) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreqn iface = {}; iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -375,8 +374,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNic) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -385,17 +384,15 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNic) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -403,25 +400,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNic) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in connect, and the group // membership is configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrConnect) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -431,8 +429,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrConnect) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -440,22 +438,20 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrConnect) { reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; ASSERT_THAT( - RetryEINTR(connect)(sockets->first_fd(), + RetryEINTR(connect)(socket1->get(), reinterpret_cast<sockaddr*>(&connect_addr.addr), connect_addr.addr_len), SyscallSucceeds()); char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -463,25 +459,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrConnect) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in connect, and the group // membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicConnect) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreqn iface = {}; iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -491,8 +488,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicConnect) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -500,22 +497,20 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicConnect) { reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; ASSERT_THAT( - RetryEINTR(connect)(sockets->first_fd(), + RetryEINTR(connect)(socket1->get(), reinterpret_cast<sockaddr*>(&connect_addr.addr), connect_addr.addr_len), SyscallSucceeds()); char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -523,25 +518,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicConnect) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in sendto, and the group // membership is configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelf) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrSelf) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the first FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -551,8 +547,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelf) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -561,17 +557,15 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelf) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->first_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -579,25 +573,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelf) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in sendto, and the group // membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelf) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicSelf) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreqn iface = {}; iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the first FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -607,8 +602,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelf) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -617,17 +612,15 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelf) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->first_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -635,25 +628,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelf) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in connect, and the group // membership is configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrSelfConnect) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the first FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -663,8 +657,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfConnect) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -672,20 +666,19 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfConnect) { reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; EXPECT_THAT( - RetryEINTR(connect)(sockets->first_fd(), + RetryEINTR(connect)(socket1->get(), reinterpret_cast<sockaddr*>(&connect_addr.addr), connect_addr.addr_len), SyscallSucceeds()); char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we did not receive the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->first_fd(), recv_buf, sizeof(recv_buf), + EXPECT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } @@ -693,25 +686,26 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfConnect) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in connect, and the group // membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicSelfConnect) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreqn iface = {}; iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); // Bind the first FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -721,8 +715,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfConnect) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -730,20 +724,19 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfConnect) { reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; ASSERT_THAT( - RetryEINTR(connect)(sockets->first_fd(), + RetryEINTR(connect)(socket1->get(), reinterpret_cast<sockaddr*>(&connect_addr.addr), connect_addr.addr_len), SyscallSucceeds()); char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we did not receive the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->first_fd(), recv_buf, sizeof(recv_buf), + EXPECT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } @@ -751,29 +744,30 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfConnect) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in sendto, and the group // membership is configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfNoLoop) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrSelfNoLoop) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_LOOP, &kSockOptOff, sizeof(kSockOptOff)), SyscallSucceeds()); // Bind the first FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -783,8 +777,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfNoLoop) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -793,17 +787,15 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfNoLoop) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->first_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } @@ -811,29 +803,30 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfAddrSelfNoLoop) { // Check that multicast works when the default send interface is configured by // IP_MULTICAST_IF, the send address is specified in sendto, and the group // membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfNoLoop) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicSelfNoLoop) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Set the default send interface. ip_mreqn iface = {}; iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_LOOP, &kSockOptOff, sizeof(kSockOptOff)), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -843,8 +836,8 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfNoLoop) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -853,57 +846,57 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastLoopbackIfNicSelfNoLoop) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->first_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); + ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), + SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } // Check that dropping a group membership that does not exist fails. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastInvalidDrop) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastInvalidDrop) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Unregister from a membership that we didn't have. ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallFailsWithErrno(EADDRNOTAVAIL)); } // Check that dropping a group membership prevents multicast packets from being // delivered. Default send address configured by bind and group membership // interface configured by address. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastDropAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the first FD to the loopback. This is an alternative to // IP_MULTICAST_IF for setting the default send interface. auto sender_addr = V4Loopback(); EXPECT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - EXPECT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + EXPECT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -913,11 +906,11 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropAddr) { ip_mreq group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -926,15 +919,14 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropAddr) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we did not receive the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + EXPECT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } @@ -942,26 +934,27 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropAddr) { // Check that dropping a group membership prevents multicast packets from being // delivered. Default send address configured by bind and group membership // interface configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropNic) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastDropNic) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind the first FD to the loopback. This is an alternative to // IP_MULTICAST_IF for setting the default send interface. auto sender_addr = V4Loopback(); EXPECT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); // Bind the second FD to the v4 any address to ensure that we can receive the // multicast packet. auto receiver_addr = V4Any(); - EXPECT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + EXPECT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -971,11 +964,11 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropNic) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet. @@ -984,50 +977,53 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastDropNic) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&send_addr.addr), + send_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we did not receive the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + EXPECT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfZero) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfZero) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn iface = {}; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfInvalidNic) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfInvalidNic) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn iface = {}; iface.imr_ifindex = -1; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallFailsWithErrno(EADDRNOTAVAIL)); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfInvalidAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfInvalidAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreq iface = {}; iface.imr_interface.s_addr = inet_addr("255.255.255"); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallFailsWithErrno(EADDRNOTAVAIL)); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetShort) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetShort) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Create a valid full-sized request. ip_mreqn iface = {}; @@ -1035,29 +1031,31 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetShort) { // Send an optlen of 1 to check that optlen is enforced. EXPECT_THAT( - setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &iface, 1), + setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, 1), SyscallFailsWithErrno(EINVAL)); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfDefault) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); in_addr get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); EXPECT_EQ(size, sizeof(get)); EXPECT_EQ(get.s_addr, 0); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfDefaultReqn) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfDefaultReqn) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); // getsockopt(IP_MULTICAST_IF) can only return an in_addr, so it treats the @@ -1072,19 +1070,20 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfDefaultReqn) { EXPECT_EQ(get.imr_ifindex, 0); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetAddrGetReqn) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetAddrGetReqn) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); in_addr set = {}; set.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &set, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, sizeof(set)), SyscallSucceeds()); ip_mreqn get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); // getsockopt(IP_MULTICAST_IF) can only return an in_addr, so it treats the @@ -1096,19 +1095,20 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetAddrGetReqn) { EXPECT_EQ(get.imr_ifindex, 0); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetReqAddrGetReqn) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetReqAddrGetReqn) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreq set = {}; set.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &set, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, sizeof(set)), SyscallSucceeds()); ip_mreqn get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); // getsockopt(IP_MULTICAST_IF) can only return an in_addr, so it treats the @@ -1120,19 +1120,20 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetReqAddrGetReqn) { EXPECT_EQ(get.imr_ifindex, 0); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetNicGetReqn) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetNicGetReqn) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn set = {}; set.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &set, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, sizeof(set)), SyscallSucceeds()); ip_mreqn get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); EXPECT_EQ(size, sizeof(in_addr)); EXPECT_EQ(get.imr_multiaddr.s_addr, 0); @@ -1140,87 +1141,93 @@ TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetNicGetReqn) { EXPECT_EQ(get.imr_ifindex, 0); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); in_addr set = {}; set.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &set, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, sizeof(set)), SyscallSucceeds()); in_addr get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); EXPECT_EQ(size, sizeof(get)); EXPECT_EQ(get.s_addr, set.s_addr); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetReqAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetReqAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreq set = {}; set.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &set, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, sizeof(set)), SyscallSucceeds()); in_addr get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); EXPECT_EQ(size, sizeof(get)); EXPECT_EQ(get.s_addr, set.imr_interface.s_addr); } -TEST_P(IPv4UDPUnboundSocketPairTest, IpMulticastIfSetNic) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetNic) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn set = {}; set.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &set, + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, sizeof(set)), SyscallSucceeds()); in_addr get = {}; socklen_t size = sizeof(get); ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), + getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), SyscallSucceeds()); EXPECT_EQ(size, sizeof(get)); EXPECT_EQ(get.s_addr, 0); } -TEST_P(IPv4UDPUnboundSocketPairTest, TestJoinGroupNoIf) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestJoinGroupNoIf) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallFailsWithErrno(ENODEV)); } -TEST_P(IPv4UDPUnboundSocketPairTest, TestJoinGroupInvalidIf) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestJoinGroupInvalidIf) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn group = {}; group.imr_address.s_addr = inet_addr("255.255.255"); group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallFailsWithErrno(ENODEV)); } // Check that multiple memberships are not allowed on the same socket. -TEST_P(IPv4UDPUnboundSocketPairTest, TestMultipleJoinsOnSingleSocket) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - auto fd = sockets->first_fd(); +TEST_P(IPv4UDPUnboundSocketTest, TestMultipleJoinsOnSingleSocket) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto fd = socket1->get(); ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); @@ -1235,41 +1242,44 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestMultipleJoinsOnSingleSocket) { } // Check that two sockets can join the same multicast group at the same time. -TEST_P(IPv4UDPUnboundSocketPairTest, TestTwoSocketsJoinSameMulticastGroup) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestTwoSocketsJoinSameMulticastGroup) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Drop the membership twice on each socket, the second call for each socket // should fail. - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallFailsWithErrno(EADDRNOTAVAIL)); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); - EXPECT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_DROP_MEMBERSHIP, - &group, sizeof(group)), + EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, + sizeof(group)), SyscallFailsWithErrno(EADDRNOTAVAIL)); } // Check that two sockets can join the same multicast group at the same time, // and both will receive data on it. -TEST_P(IPv4UDPUnboundSocketPairTest, TestMcastReceptionOnTwoSockets) { +TEST_P(IPv4UDPUnboundSocketTest, TestMcastReceptionOnTwoSockets) { std::unique_ptr<SocketPair> socket_pairs[2] = { - ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair())}; + absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), + ASSERT_NO_ERRNO_AND_VALUE(NewSocket())), + absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), + ASSERT_NO_ERRNO_AND_VALUE(NewSocket()))}; ip_mreq iface = {}, group = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); @@ -1339,11 +1349,12 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestMcastReceptionOnTwoSockets) { // Check that on two sockets that joined a group and listen on ANY, dropping // memberships one by one will continue to deliver packets to both sockets until // both memberships have been dropped. -TEST_P(IPv4UDPUnboundSocketPairTest, - TestMcastReceptionWhenDroppingMemberships) { +TEST_P(IPv4UDPUnboundSocketTest, TestMcastReceptionWhenDroppingMemberships) { std::unique_ptr<SocketPair> socket_pairs[2] = { - ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair())}; + absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), + ASSERT_NO_ERRNO_AND_VALUE(NewSocket())), + absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), + ASSERT_NO_ERRNO_AND_VALUE(NewSocket()))}; ip_mreq iface = {}, group = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); @@ -1438,18 +1449,19 @@ TEST_P(IPv4UDPUnboundSocketPairTest, // Check that a receiving socket can bind to the multicast address before // joining the group and receive data once the group has been joined. -TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenJoinThenReceive) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestBindToMcastThenJoinThenReceive) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind second socket (receiver) to the multicast address. auto receiver_addr = V4Multicast(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); // Update receiver_addr with the correct port number. socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -1459,30 +1471,29 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenJoinThenReceive) { ip_mreqn group = {}; group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), + ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, + sizeof(group)), SyscallSucceeds()); // Send a multicast packet on the first socket out the loopback interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); auto sendto_addr = V4Multicast(); reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&sendto_addr.addr), + sendto_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); @@ -1490,18 +1501,19 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenJoinThenReceive) { // Check that a receiving socket can bind to the multicast address and won't // receive multicast data if it hasn't joined the group. -TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenNoJoinThenNoReceive) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestBindToMcastThenNoJoinThenNoReceive) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind second socket (receiver) to the multicast address. auto receiver_addr = V4Multicast(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); // Update receiver_addr with the correct port number. socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -1510,40 +1522,40 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenNoJoinThenNoReceive) { // Send a multicast packet on the first socket out the loopback interface. ip_mreq iface = {}; iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), + ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, + sizeof(iface)), SyscallSucceeds()); auto sendto_addr = V4Multicast(); reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&sendto_addr.addr), + sendto_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we don't receive the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallFailsWithErrno(EAGAIN)); } // Check that a socket can bind to a multicast address and still send out // packets. -TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenSend) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestBindToMcastThenSend) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind second socket (receiver) to the ANY address. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -1552,11 +1564,11 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenSend) { // Bind the first socket (sender) to the multicast address. auto sender_addr = V4Multicast(); ASSERT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); socklen_t sender_addr_len = sender_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), &sender_addr_len), SyscallSucceeds()); @@ -1568,15 +1580,14 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenSend) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&sendto_addr.addr), + sendto_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); @@ -1584,46 +1595,46 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToMcastThenSend) { // Check that a receiving socket can bind to the broadcast address and receive // broadcast packets. -TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToBcastThenReceive) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestBindToBcastThenReceive) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind second socket (receiver) to the broadcast address. auto receiver_addr = V4Broadcast(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); // Send a broadcast packet on the first socket out the loopback interface. - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_BROADCAST, - &kSockOptOn, sizeof(kSockOptOn)), + EXPECT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, + sizeof(kSockOptOn)), SyscallSucceedsWithValue(0)); // Note: Binding to the loopback interface makes the broadcast go out of it. auto sender_bind_addr = V4Loopback(); - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<sockaddr*>(&sender_bind_addr.addr), - sender_bind_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_bind_addr.addr), + sender_bind_addr.addr_len), + SyscallSucceeds()); auto sendto_addr = V4Broadcast(); reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&sendto_addr.addr), + sendto_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the multicast packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); @@ -1631,17 +1642,18 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToBcastThenReceive) { // Check that a socket can bind to the broadcast address and still send out // packets. -TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToBcastThenSend) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); +TEST_P(IPv4UDPUnboundSocketTest, TestBindToBcastThenSend) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); // Bind second socket (receiver) to the ANY address. auto receiver_addr = V4Any(); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); + ASSERT_THAT( + bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), + receiver_addr.addr_len), + SyscallSucceeds()); socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), + ASSERT_THAT(getsockname(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), &receiver_addr_len), SyscallSucceeds()); @@ -1650,11 +1662,11 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToBcastThenSend) { // Bind the first socket (sender) to the broadcast address. auto sender_addr = V4Broadcast(); ASSERT_THAT( - bind(sockets->first_fd(), reinterpret_cast<sockaddr*>(&sender_addr.addr), + bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), sender_addr.addr_len), SyscallSucceeds()); socklen_t sender_addr_len = sender_addr.addr_len; - ASSERT_THAT(getsockname(sockets->first_fd(), + ASSERT_THAT(getsockname(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), &sender_addr_len), SyscallSucceeds()); @@ -1666,19 +1678,476 @@ TEST_P(IPv4UDPUnboundSocketPairTest, TestBindToBcastThenSend) { reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; char send_buf[200]; RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); + ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&sendto_addr.addr), + sendto_addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); // Check that we received the packet. char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), + ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), SyscallSucceedsWithValue(sizeof(recv_buf))); EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); } +// Check that SO_REUSEADDR always delivers to the most recently bound socket. +TEST_P(IPv4UDPUnboundSocketTest, ReuseAddrDistribution) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + std::vector<std::unique_ptr<FileDescriptor>> sockets; + sockets.emplace_back(ASSERT_NO_ERRNO_AND_VALUE(NewSocket())); + + ASSERT_THAT(setsockopt(sockets[0]->get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(sockets[0]->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(sockets[0]->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + constexpr int kMessageSize = 200; + + for (int i = 0; i < 10; i++) { + // Add a new receiver. + sockets.emplace_back(ASSERT_NO_ERRNO_AND_VALUE(NewSocket())); + auto& last = sockets.back(); + ASSERT_THAT(setsockopt(last->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(last->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Send a new message to the SO_REUSEADDR group. We use a new socket each + // time so that a new ephemeral port will be used each time. This ensures + // that we aren't doing REUSEPORT-like hash load blancing. + auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + char send_buf[kMessageSize]; + RandomizeBuffer(send_buf, sizeof(send_buf)); + EXPECT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); + + // Verify that the most recent socket got the message. We don't expect any + // of the other sockets to have received it, but we will check that later. + char recv_buf[sizeof(send_buf)] = {}; + EXPECT_THAT( + RetryEINTR(recv)(last->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), + SyscallSucceedsWithValue(sizeof(send_buf))); + EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); + } + + // Verify that no other messages were received. + for (auto& socket : sockets) { + char recv_buf[kMessageSize] = {}; + EXPECT_THAT(RetryEINTR(recv)(socket->get(), recv_buf, sizeof(recv_buf), + MSG_DONTWAIT), + SyscallFailsWithErrno(EAGAIN)); + } +} + +TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrThenReusePort) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, only with REUSEPORT. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallFailsWithErrno(EADDRINUSE)); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindReusePortThenReuseAddr) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, only with REUSEADDR. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallFailsWithErrno(EADDRINUSE)); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConvertibleToReusePort) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR and REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, only with REUSEPORT. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Bind socket3 to the same address as socket1, only with REUSEADDR. + ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallFailsWithErrno(EADDRINUSE)); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConvertibleToReuseAddr) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR and REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, only with REUSEADDR. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Bind socket3 to the same address as socket1, only with REUSEPORT. + ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallFailsWithErrno(EADDRINUSE)); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConversionReversable1) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR and REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, only with REUSEPORT. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Close socket2 to revert to just socket1 with REUSEADDR and REUSEPORT. + socket2->reset(); + + // Bind socket3 to the same address as socket1, only with REUSEADDR. + ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConversionReversable2) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR and REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, only with REUSEADDR. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Close socket2 to revert to just socket1 with REUSEADDR and REUSEPORT. + socket2->reset(); + + // Bind socket3 to the same address as socket1, only with REUSEPORT. + ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindDoubleReuseAddrReusePortThenReusePort) { + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR and REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, also with REUSEADDR and + // REUSEPORT. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Bind socket3 to the same address as socket1, only with REUSEPORT. + ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); +} + +TEST_P(IPv4UDPUnboundSocketTest, BindDoubleReuseAddrReusePortThenReuseAddr) { + // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. + SKIP_IF(IsRunningOnGvisor()); + + auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + // Bind socket1 with REUSEADDR and REUSEPORT. + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(socket1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind socket2 to the same address as socket1, also with REUSEADDR and + // REUSEPORT. + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + // Bind socket3 to the same address as socket1, only with REUSEADDR. + ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); +} + +// Check that REUSEPORT takes precedence over REUSEADDR. +TEST_P(IPv4UDPUnboundSocketTest, ReuseAddrReusePortDistribution) { + auto receiver1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + auto receiver2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + + ASSERT_THAT(setsockopt(receiver1->get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(receiver1->get(), SOL_SOCKET, SO_REUSEPORT, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Bind the first socket to the loopback and take note of the selected port. + auto addr = V4Loopback(); + ASSERT_THAT(bind(receiver1->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + socklen_t addr_len = addr.addr_len; + ASSERT_THAT(getsockname(receiver1->get(), + reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), + SyscallSucceeds()); + EXPECT_EQ(addr_len, addr.addr_len); + + // Bind receiver2 to the same address as socket1, also with REUSEADDR and + // REUSEPORT. + ASSERT_THAT(setsockopt(receiver2->get(), SOL_SOCKET, SO_REUSEADDR, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(setsockopt(receiver2->get(), SOL_SOCKET, SO_REUSEPORT, + &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + ASSERT_THAT(bind(receiver2->get(), reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceeds()); + + constexpr int kMessageSize = 10; + + for (int i = 0; i < 100; ++i) { + // Send a new message to the REUSEADDR/REUSEPORT group. We use a new socket + // each time so that a new ephemerial port will be used each time. This + // ensures that we cycle through hashes. + auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); + char send_buf[kMessageSize] = {}; + EXPECT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, + reinterpret_cast<sockaddr*>(&addr.addr), + addr.addr_len), + SyscallSucceedsWithValue(sizeof(send_buf))); + } + + // Check that both receivers got messages. This checks that we are using load + // balancing (REUSEPORT) instead of the most recently bound socket + // (REUSEADDR). + char recv_buf[kMessageSize] = {}; + EXPECT_THAT(RetryEINTR(recv)(receiver1->get(), recv_buf, sizeof(recv_buf), + MSG_DONTWAIT), + SyscallSucceedsWithValue(kMessageSize)); + EXPECT_THAT(RetryEINTR(recv)(receiver2->get(), recv_buf, sizeof(recv_buf), + MSG_DONTWAIT), + SyscallSucceedsWithValue(kMessageSize)); +} + } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound.h b/test/syscalls/linux/socket_ipv4_udp_unbound.h index 8e07bfbbf..f64c57645 100644 --- a/test/syscalls/linux/socket_ipv4_udp_unbound.h +++ b/test/syscalls/linux/socket_ipv4_udp_unbound.h @@ -20,8 +20,8 @@ namespace gvisor { namespace testing { -// Test fixture for tests that apply to pairs of IPv4 UDP sockets. -using IPv4UDPUnboundSocketPairTest = SocketPairTest; +// Test fixture for tests that apply to IPv4 UDP sockets. +using IPv4UDPUnboundSocketTest = SimpleSocketTest; } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc index 8b8993d3d..98ae414f3 100644 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc +++ b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc @@ -27,7 +27,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc index 9d4e1ab97..8f47952b0 100644 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc +++ b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc @@ -12,10 +12,11 @@ // See the License for the specific language governing permissions and // limitations under the License. +#include "test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h" + #include <vector> #include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc b/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc index cb0105471..f121c044d 100644 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc +++ b/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc @@ -22,14 +22,11 @@ namespace gvisor { namespace testing { -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - IPv4UDPUnboundSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P(IPv4UDPSockets, IPv4UDPUnboundSocketPairTest, - ::testing::ValuesIn(GetSocketPairs())); +INSTANTIATE_TEST_SUITE_P( + IPv4UDPSockets, IPv4UDPUnboundSocketTest, + ::testing::ValuesIn(ApplyVec<SocketKind>(IPv4UDPUnboundSocket, + AllBitwiseCombinations(List<int>{ + 0, SOCK_NONBLOCK})))); } // namespace testing } // namespace gvisor diff --git a/test/syscalls/linux/socket_netdevice.cc b/test/syscalls/linux/socket_netdevice.cc index 765f8e0e4..405dbbd73 100644 --- a/test/syscalls/linux/socket_netdevice.cc +++ b/test/syscalls/linux/socket_netdevice.cc @@ -68,7 +68,8 @@ TEST(NetdeviceTest, Netmask) { // Use a netlink socket to get the netmask, which we'll then compare to the // netmask obtained via ioctl. - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); struct request { diff --git a/test/syscalls/linux/socket_netlink.cc b/test/syscalls/linux/socket_netlink.cc new file mode 100644 index 000000000..4ec0fd4fa --- /dev/null +++ b/test/syscalls/linux/socket_netlink.cc @@ -0,0 +1,153 @@ +// Copyright 2018 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <linux/netlink.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <unistd.h> + +#include "gtest/gtest.h" +#include "test/syscalls/linux/socket_test_util.h" +#include "test/util/file_descriptor.h" +#include "test/util/test_util.h" + +// Tests for all netlink socket protocols. + +namespace gvisor { +namespace testing { + +namespace { + +// NetlinkTest parameter is the protocol to test. +using NetlinkTest = ::testing::TestWithParam<int>; + +// Netlink sockets must be SOCK_DGRAM or SOCK_RAW. +TEST_P(NetlinkTest, Types) { + const int protocol = GetParam(); + + EXPECT_THAT(socket(AF_NETLINK, SOCK_STREAM, protocol), + SyscallFailsWithErrno(ESOCKTNOSUPPORT)); + EXPECT_THAT(socket(AF_NETLINK, SOCK_SEQPACKET, protocol), + SyscallFailsWithErrno(ESOCKTNOSUPPORT)); + EXPECT_THAT(socket(AF_NETLINK, SOCK_RDM, protocol), + SyscallFailsWithErrno(ESOCKTNOSUPPORT)); + EXPECT_THAT(socket(AF_NETLINK, SOCK_DCCP, protocol), + SyscallFailsWithErrno(ESOCKTNOSUPPORT)); + EXPECT_THAT(socket(AF_NETLINK, SOCK_PACKET, protocol), + SyscallFailsWithErrno(ESOCKTNOSUPPORT)); + + int fd; + EXPECT_THAT(fd = socket(AF_NETLINK, SOCK_DGRAM, protocol), SyscallSucceeds()); + EXPECT_THAT(close(fd), SyscallSucceeds()); + + EXPECT_THAT(fd = socket(AF_NETLINK, SOCK_RAW, protocol), SyscallSucceeds()); + EXPECT_THAT(close(fd), SyscallSucceeds()); +} + +TEST_P(NetlinkTest, AutomaticPort) { + const int protocol = GetParam(); + + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, protocol)); + + struct sockaddr_nl addr = {}; + addr.nl_family = AF_NETLINK; + + EXPECT_THAT( + bind(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)), + SyscallSucceeds()); + + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), + &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, sizeof(addr)); + // This is the only netlink socket in the process, so it should get the PID as + // the port id. + // + // N.B. Another process could theoretically have explicitly reserved our pid + // as a port ID, but that is very unlikely. + EXPECT_EQ(addr.nl_pid, getpid()); +} + +// Calling connect automatically binds to an automatic port. +TEST_P(NetlinkTest, ConnectBinds) { + const int protocol = GetParam(); + + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, protocol)); + + struct sockaddr_nl addr = {}; + addr.nl_family = AF_NETLINK; + + EXPECT_THAT(connect(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), + sizeof(addr)), + SyscallSucceeds()); + + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), + &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, sizeof(addr)); + + // Each test is running in a pid namespace, so another process can explicitly + // reserve our pid as a port ID. In this case, a negative portid value will be + // set. + if (static_cast<pid_t>(addr.nl_pid) > 0) { + EXPECT_EQ(addr.nl_pid, getpid()); + } + + memset(&addr, 0, sizeof(addr)); + addr.nl_family = AF_NETLINK; + + // Connecting again is allowed, but keeps the same port. + EXPECT_THAT(connect(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), + sizeof(addr)), + SyscallSucceeds()); + + addrlen = sizeof(addr); + EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), + &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, sizeof(addr)); + EXPECT_EQ(addr.nl_pid, getpid()); +} + +TEST_P(NetlinkTest, GetPeerName) { + const int protocol = GetParam(); + + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, protocol)); + + struct sockaddr_nl addr = {}; + socklen_t addrlen = sizeof(addr); + + EXPECT_THAT(getpeername(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), + &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, sizeof(addr)); + EXPECT_EQ(addr.nl_family, AF_NETLINK); + // Peer is the kernel if we didn't connect elsewhere. + EXPECT_EQ(addr.nl_pid, 0); +} + +INSTANTIATE_TEST_SUITE_P(ProtocolTest, NetlinkTest, + ::testing::Values(NETLINK_ROUTE, + NETLINK_KOBJECT_UEVENT)); + +} // namespace + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink_route.cc b/test/syscalls/linux/socket_netlink_route.cc index dd4a11655..ef567f512 100644 --- a/test/syscalls/linux/socket_netlink_route.cc +++ b/test/syscalls/linux/socket_netlink_route.cc @@ -41,112 +41,7 @@ namespace { using ::testing::AnyOf; using ::testing::Eq; -// Netlink sockets must be SOCK_DGRAM or SOCK_RAW. -TEST(NetlinkRouteTest, Types) { - EXPECT_THAT(socket(AF_NETLINK, SOCK_STREAM, NETLINK_ROUTE), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_SEQPACKET, NETLINK_ROUTE), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_RDM, NETLINK_ROUTE), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_DCCP, NETLINK_ROUTE), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_PACKET, NETLINK_ROUTE), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - - int fd; - EXPECT_THAT(fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT(fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(NetlinkRouteTest, AutomaticPort) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)); - - struct sockaddr_nl addr = {}; - addr.nl_family = AF_NETLINK; - - EXPECT_THAT( - bind(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)), - SyscallSucceeds()); - - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, sizeof(addr)); - // This is the only netlink socket in the process, so it should get the PID as - // the port id. - // - // N.B. Another process could theoretically have explicitly reserved our pid - // as a port ID, but that is very unlikely. - EXPECT_EQ(addr.nl_pid, getpid()); -} - -// Calling connect automatically binds to an automatic port. -TEST(NetlinkRouteTest, ConnectBinds) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)); - - struct sockaddr_nl addr = {}; - addr.nl_family = AF_NETLINK; - - EXPECT_THAT(connect(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, sizeof(addr)); - - // Each test is running in a pid namespace, so another process can explicitly - // reserve our pid as a port ID. In this case, a negative portid value will be - // set. - if (static_cast<pid_t>(addr.nl_pid) > 0) { - EXPECT_EQ(addr.nl_pid, getpid()); - } - - memset(&addr, 0, sizeof(addr)); - addr.nl_family = AF_NETLINK; - - // Connecting again is allowed, but keeps the same port. - EXPECT_THAT(connect(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, sizeof(addr)); - EXPECT_EQ(addr.nl_pid, getpid()); -} - -TEST(NetlinkRouteTest, GetPeerName) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)); - - struct sockaddr_nl addr = {}; - socklen_t addrlen = sizeof(addr); - - EXPECT_THAT(getpeername(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, sizeof(addr)); - EXPECT_EQ(addr.nl_family, AF_NETLINK); - // Peer is the kernel if we didn't connect elsewhere. - EXPECT_EQ(addr.nl_pid, 0); -} - -// Parameters for GetSockOpt test. They are: +// Parameters for SockOptTest. They are: // 0: Socket option to query. // 1: A predicate to run on the returned sockopt value. Should return true if // the value is considered ok. @@ -195,7 +90,8 @@ INSTANTIATE_TEST_SUITE_P( std::make_tuple(SO_DOMAIN, IsEqual(AF_NETLINK), absl::StrFormat("AF_NETLINK (%d)", AF_NETLINK)), std::make_tuple(SO_PROTOCOL, IsEqual(NETLINK_ROUTE), - absl::StrFormat("NETLINK_ROUTE (%d)", NETLINK_ROUTE)))); + absl::StrFormat("NETLINK_ROUTE (%d)", NETLINK_ROUTE)), + std::make_tuple(SO_PASSCRED, IsEqual(0), "0"))); // Validates the reponses to RTM_GETLINK + NLM_F_DUMP. void CheckGetLinkResponse(const struct nlmsghdr* hdr, int seq, int port) { @@ -218,7 +114,8 @@ void CheckGetLinkResponse(const struct nlmsghdr* hdr, int seq, int port) { } TEST(NetlinkRouteTest, GetLinkDump) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); struct request { @@ -259,7 +156,8 @@ TEST(NetlinkRouteTest, GetLinkDump) { } TEST(NetlinkRouteTest, MsgHdrMsgUnsuppType) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); struct request { struct nlmsghdr hdr; @@ -292,7 +190,8 @@ TEST(NetlinkRouteTest, MsgHdrMsgUnsuppType) { } TEST(NetlinkRouteTest, MsgHdrMsgTrunc) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); struct request { struct nlmsghdr hdr; @@ -331,7 +230,8 @@ TEST(NetlinkRouteTest, MsgHdrMsgTrunc) { } TEST(NetlinkRouteTest, MsgTruncMsgHdrMsgTrunc) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); struct request { struct nlmsghdr hdr; @@ -372,7 +272,8 @@ TEST(NetlinkRouteTest, MsgTruncMsgHdrMsgTrunc) { } TEST(NetlinkRouteTest, ControlMessageIgnored) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); struct request { @@ -407,7 +308,8 @@ TEST(NetlinkRouteTest, ControlMessageIgnored) { } TEST(NetlinkRouteTest, GetAddrDump) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); struct request { @@ -467,7 +369,8 @@ TEST(NetlinkRouteTest, LookupAll) { // GetRouteDump tests a RTM_GETROUTE + NLM_F_DUMP request. TEST(NetlinkRouteTest, GetRouteDump) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); struct request { @@ -543,7 +446,8 @@ TEST(NetlinkRouteTest, GetRouteDump) { // buffer. MSG_TRUNC with a zero length buffer should consume subsequent // messages off the socket. TEST(NetlinkRouteTest, RecvmsgTrunc) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); struct request { struct nlmsghdr hdr; @@ -619,7 +523,8 @@ TEST(NetlinkRouteTest, RecvmsgTrunc) { // it, so a properly sized buffer can be allocated to store the message. This // test tests that scenario. TEST(NetlinkRouteTest, RecvmsgTruncPeek) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); struct request { struct nlmsghdr hdr; @@ -692,6 +597,115 @@ TEST(NetlinkRouteTest, RecvmsgTruncPeek) { } while (type != NLMSG_DONE && type != NLMSG_ERROR); } +// No SCM_CREDENTIALS are received without SO_PASSCRED set. +TEST(NetlinkRouteTest, NoPasscredNoCreds) { + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); + + ASSERT_THAT(setsockopt(fd.get(), SOL_SOCKET, SO_PASSCRED, &kSockOptOff, + sizeof(kSockOptOff)), + SyscallSucceeds()); + + struct request { + struct nlmsghdr hdr; + struct rtgenmsg rgm; + }; + + constexpr uint32_t kSeq = 12345; + + struct request req; + req.hdr.nlmsg_len = sizeof(req); + req.hdr.nlmsg_type = RTM_GETADDR; + req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; + req.hdr.nlmsg_seq = kSeq; + req.rgm.rtgen_family = AF_UNSPEC; + + struct iovec iov = {}; + iov.iov_base = &req; + iov.iov_len = sizeof(req); + + struct msghdr msg = {}; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); + + iov.iov_base = NULL; + iov.iov_len = 0; + + char control[CMSG_SPACE(sizeof(struct ucred))] = {}; + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + // Note: This test assumes at least one message is returned by the + // RTM_GETADDR request. + ASSERT_THAT(RetryEINTR(recvmsg)(fd.get(), &msg, 0), SyscallSucceeds()); + + // No control messages. + EXPECT_EQ(CMSG_FIRSTHDR(&msg), nullptr); +} + +// SCM_CREDENTIALS are received with SO_PASSCRED set. +TEST(NetlinkRouteTest, PasscredCreds) { + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); + + ASSERT_THAT(setsockopt(fd.get(), SOL_SOCKET, SO_PASSCRED, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); + + struct request { + struct nlmsghdr hdr; + struct rtgenmsg rgm; + }; + + constexpr uint32_t kSeq = 12345; + + struct request req; + req.hdr.nlmsg_len = sizeof(req); + req.hdr.nlmsg_type = RTM_GETADDR; + req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; + req.hdr.nlmsg_seq = kSeq; + req.rgm.rtgen_family = AF_UNSPEC; + + struct iovec iov = {}; + iov.iov_base = &req; + iov.iov_len = sizeof(req); + + struct msghdr msg = {}; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); + + iov.iov_base = NULL; + iov.iov_len = 0; + + char control[CMSG_SPACE(sizeof(struct ucred))] = {}; + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + // Note: This test assumes at least one message is returned by the + // RTM_GETADDR request. + ASSERT_THAT(RetryEINTR(recvmsg)(fd.get(), &msg, 0), SyscallSucceeds()); + + struct ucred creds; + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + ASSERT_NE(cmsg, nullptr); + ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(creds))); + ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); + ASSERT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); + + memcpy(&creds, CMSG_DATA(cmsg), sizeof(creds)); + + // The peer is the kernel, which is "PID" 0. + EXPECT_EQ(creds.pid, 0); + // The kernel identifies as root. Also allow nobody in case this test is + // running in a userns without root mapped. + EXPECT_THAT(creds.uid, AnyOf(Eq(0), Eq(65534))); + EXPECT_THAT(creds.gid, AnyOf(Eq(0), Eq(65534))); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/socket_netlink_uevent.cc b/test/syscalls/linux/socket_netlink_uevent.cc new file mode 100644 index 000000000..da425bed4 --- /dev/null +++ b/test/syscalls/linux/socket_netlink_uevent.cc @@ -0,0 +1,83 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <linux/filter.h> +#include <linux/netlink.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <unistd.h> + +#include "gtest/gtest.h" +#include "test/syscalls/linux/socket_netlink_util.h" +#include "test/syscalls/linux/socket_test_util.h" +#include "test/util/file_descriptor.h" +#include "test/util/test_util.h" + +// Tests for NETLINK_KOBJECT_UEVENT sockets. +// +// gVisor never sends any messages on these sockets, so we don't test the events +// themselves. + +namespace gvisor { +namespace testing { + +namespace { + +// SO_PASSCRED can be enabled. Since no messages are sent in gVisor, we don't +// actually test receiving credentials. +TEST(NetlinkUeventTest, PassCred) { + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_KOBJECT_UEVENT)); + + EXPECT_THAT(setsockopt(fd.get(), SOL_SOCKET, SO_PASSCRED, &kSockOptOn, + sizeof(kSockOptOn)), + SyscallSucceeds()); +} + +// SO_DETACH_FILTER fails without a filter already installed. +TEST(NetlinkUeventTest, DetachNoFilter) { + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_KOBJECT_UEVENT)); + + int opt; + EXPECT_THAT( + setsockopt(fd.get(), SOL_SOCKET, SO_DETACH_FILTER, &opt, sizeof(opt)), + SyscallFailsWithErrno(ENOENT)); +} + +// We can attach a BPF filter. +TEST(NetlinkUeventTest, AttachFilter) { + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_KOBJECT_UEVENT)); + + // Minimal BPF program: a single ret. + struct sock_filter filter = {0x6, 0, 0, 0}; + struct sock_fprog prog = {}; + prog.len = 1; + prog.filter = &filter; + + EXPECT_THAT( + setsockopt(fd.get(), SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog)), + SyscallSucceeds()); + + int opt; + EXPECT_THAT( + setsockopt(fd.get(), SOL_SOCKET, SO_DETACH_FILTER, &opt, sizeof(opt)), + SyscallSucceeds()); +} + +} // namespace + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink_util.cc b/test/syscalls/linux/socket_netlink_util.cc index fcb8f8a88..723f5d728 100644 --- a/test/syscalls/linux/socket_netlink_util.cc +++ b/test/syscalls/linux/socket_netlink_util.cc @@ -12,24 +12,23 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include <sys/socket.h> +#include "test/syscalls/linux/socket_netlink_util.h" #include <linux/if_arp.h> #include <linux/netlink.h> -#include <linux/rtnetlink.h> +#include <sys/socket.h> #include <vector> #include "absl/strings/str_cat.h" -#include "test/syscalls/linux/socket_netlink_util.h" #include "test/syscalls/linux/socket_test_util.h" namespace gvisor { namespace testing { -PosixErrorOr<FileDescriptor> NetlinkBoundSocket() { +PosixErrorOr<FileDescriptor> NetlinkBoundSocket(int protocol) { FileDescriptor fd; - ASSIGN_OR_RETURN_ERRNO(fd, Socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)); + ASSIGN_OR_RETURN_ERRNO(fd, Socket(AF_NETLINK, SOCK_RAW, protocol)); struct sockaddr_nl addr = {}; addr.nl_family = AF_NETLINK; diff --git a/test/syscalls/linux/socket_netlink_util.h b/test/syscalls/linux/socket_netlink_util.h index db8639a2f..76e772c48 100644 --- a/test/syscalls/linux/socket_netlink_util.h +++ b/test/syscalls/linux/socket_netlink_util.h @@ -15,9 +15,10 @@ #ifndef GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ #define GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ +#include <sys/socket.h> +// socket.h has to be included before if_arp.h. #include <linux/if_arp.h> #include <linux/netlink.h> -#include <linux/rtnetlink.h> #include "test/util/file_descriptor.h" #include "test/util/posix_error.h" @@ -25,8 +26,8 @@ namespace gvisor { namespace testing { -// Returns a bound NETLINK_ROUTE socket. -PosixErrorOr<FileDescriptor> NetlinkBoundSocket(); +// Returns a bound netlink socket. +PosixErrorOr<FileDescriptor> NetlinkBoundSocket(int protocol); // Returns the port ID of the passed socket. PosixErrorOr<uint32_t> NetlinkPortID(int fd); diff --git a/test/syscalls/linux/socket_non_blocking.cc b/test/syscalls/linux/socket_non_blocking.cc index 73e6dc618..c3520cadd 100644 --- a/test/syscalls/linux/socket_non_blocking.cc +++ b/test/syscalls/linux/socket_non_blocking.cc @@ -20,7 +20,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_non_stream.cc b/test/syscalls/linux/socket_non_stream.cc index 3c599b6e8..d91c5ed39 100644 --- a/test/syscalls/linux/socket_non_stream.cc +++ b/test/syscalls/linux/socket_non_stream.cc @@ -19,7 +19,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/ip_socket_test_util.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_non_stream_blocking.cc b/test/syscalls/linux/socket_non_stream_blocking.cc index 76127d181..62d87c1af 100644 --- a/test/syscalls/linux/socket_non_stream_blocking.cc +++ b/test/syscalls/linux/socket_non_stream_blocking.cc @@ -20,7 +20,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/time/clock.h" #include "absl/time/time.h" #include "test/syscalls/linux/socket_test_util.h" diff --git a/test/syscalls/linux/socket_stream.cc b/test/syscalls/linux/socket_stream.cc index 0417dd347..346443f96 100644 --- a/test/syscalls/linux/socket_stream.cc +++ b/test/syscalls/linux/socket_stream.cc @@ -20,7 +20,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/time/clock.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_stream_blocking.cc b/test/syscalls/linux/socket_stream_blocking.cc index 8367460d2..e9cc082bf 100644 --- a/test/syscalls/linux/socket_stream_blocking.cc +++ b/test/syscalls/linux/socket_stream_blocking.cc @@ -20,7 +20,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/time/clock.h" #include "absl/time/time.h" #include "test/syscalls/linux/socket_test_util.h" diff --git a/test/syscalls/linux/socket_stream_nonblock.cc b/test/syscalls/linux/socket_stream_nonblock.cc index b00748b97..74d608741 100644 --- a/test/syscalls/linux/socket_stream_nonblock.cc +++ b/test/syscalls/linux/socket_stream_nonblock.cc @@ -20,7 +20,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_test_util.h b/test/syscalls/linux/socket_test_util.h index 70710195c..2dbb8bed3 100644 --- a/test/syscalls/linux/socket_test_util.h +++ b/test/syscalls/linux/socket_test_util.h @@ -30,7 +30,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/str_format.h" #include "test/util/file_descriptor.h" #include "test/util/posix_error.h" @@ -115,6 +114,9 @@ class FDSocketPair : public SocketPair { public: FDSocketPair(int first_fd, int second_fd) : first_(first_fd), second_(second_fd) {} + FDSocketPair(std::unique_ptr<FileDescriptor> first_fd, + std::unique_ptr<FileDescriptor> second_fd) + : first_(first_fd->release()), second_(second_fd->release()) {} int first_fd() const override { return first_.get(); } int second_fd() const override { return second_.get(); } diff --git a/test/syscalls/linux/socket_unix.cc b/test/syscalls/linux/socket_unix.cc index 875f0391f..4cf1f76f1 100644 --- a/test/syscalls/linux/socket_unix.cc +++ b/test/syscalls/linux/socket_unix.cc @@ -25,7 +25,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/string_view.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" @@ -66,6 +65,21 @@ TEST_P(UnixSocketPairTest, BindToBadName) { SyscallFailsWithErrno(ENOENT)); } +TEST_P(UnixSocketPairTest, BindToBadFamily) { + auto pair = + ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); + + constexpr char kBadName[] = "/some/path/that/does/not/exist"; + sockaddr_un sockaddr; + sockaddr.sun_family = AF_INET; + memcpy(sockaddr.sun_path, kBadName, sizeof(kBadName)); + + EXPECT_THAT( + bind(pair->first_fd(), reinterpret_cast<struct sockaddr*>(&sockaddr), + sizeof(sockaddr)), + SyscallFailsWithErrno(EINVAL)); +} + TEST_P(UnixSocketPairTest, RecvmmsgTimeoutAfterRecv) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); char sent_data[10]; diff --git a/test/syscalls/linux/socket_unix_blocking_local.cc b/test/syscalls/linux/socket_unix_blocking_local.cc index 1994139e6..6f84221b2 100644 --- a/test/syscalls/linux/socket_unix_blocking_local.cc +++ b/test/syscalls/linux/socket_unix_blocking_local.cc @@ -12,10 +12,9 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include "test/syscalls/linux/socket_blocking.h" - #include <vector> +#include "test/syscalls/linux/socket_blocking.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_unix_cmsg.cc b/test/syscalls/linux/socket_unix_cmsg.cc index 1092e29b1..a16899493 100644 --- a/test/syscalls/linux/socket_unix_cmsg.cc +++ b/test/syscalls/linux/socket_unix_cmsg.cc @@ -25,7 +25,6 @@ #include <vector> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/string_view.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" @@ -150,6 +149,35 @@ TEST_P(UnixSocketPairCmsgTest, BadFDPass) { SyscallFailsWithErrno(EBADF)); } +TEST_P(UnixSocketPairCmsgTest, ShortCmsg) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + char sent_data[20]; + RandomizeBuffer(sent_data, sizeof(sent_data)); + + int sent_fd = -1; + + struct msghdr msg = {}; + char control[CMSG_SPACE(sizeof(sent_fd))]; + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_len = 1; + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + memcpy(CMSG_DATA(cmsg), &sent_fd, sizeof(sent_fd)); + + struct iovec iov; + iov.iov_base = sent_data; + iov.iov_len = sizeof(sent_data); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + ASSERT_THAT(RetryEINTR(sendmsg)(sockets->first_fd(), &msg, 0), + SyscallFailsWithErrno(EINVAL)); +} + // BasicFDPassNoSpace starts off by sending a single FD just like BasicFDPass. // The difference is that when calling recvmsg, no space for FDs is provided, // only space for the cmsg header. diff --git a/test/syscalls/linux/socket_unix_dgram.cc b/test/syscalls/linux/socket_unix_dgram.cc index 3e0f611d2..af0df4fb4 100644 --- a/test/syscalls/linux/socket_unix_dgram.cc +++ b/test/syscalls/linux/socket_unix_dgram.cc @@ -16,7 +16,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_unix_dgram_non_blocking.cc b/test/syscalls/linux/socket_unix_dgram_non_blocking.cc index 707052af8..2db8b68d3 100644 --- a/test/syscalls/linux/socket_unix_dgram_non_blocking.cc +++ b/test/syscalls/linux/socket_unix_dgram_non_blocking.cc @@ -14,7 +14,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_unix_non_stream.cc b/test/syscalls/linux/socket_unix_non_stream.cc index dafe82494..276a94eb8 100644 --- a/test/syscalls/linux/socket_unix_non_stream.cc +++ b/test/syscalls/linux/socket_unix_non_stream.cc @@ -19,7 +19,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/memory_util.h" @@ -231,11 +230,21 @@ TEST_P(UnixNonStreamSocketPairTest, SendTimeout) { setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), SyscallSucceeds()); - char buf[100] = {}; + const int buf_size = 5 * kPageSize; + EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &buf_size, + sizeof(buf_size)), + SyscallSucceeds()); + EXPECT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_RCVBUF, &buf_size, + sizeof(buf_size)), + SyscallSucceeds()); + + // The buffer size should be big enough to avoid many iterations in the next + // loop. Otherwise, this will slow down cooperative_save tests. + std::vector<char> buf(kPageSize); for (;;) { int ret; ASSERT_THAT( - ret = RetryEINTR(send)(sockets->first_fd(), buf, sizeof(buf), 0), + ret = RetryEINTR(send)(sockets->first_fd(), buf.data(), buf.size(), 0), ::testing::AnyOf(SyscallSucceeds(), SyscallFailsWithErrno(EAGAIN))); if (ret == -1) { break; diff --git a/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc b/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc index da762cd83..8855d5001 100644 --- a/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc +++ b/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc @@ -12,10 +12,9 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include "test/syscalls/linux/socket_non_stream_blocking.h" - #include <vector> +#include "test/syscalls/linux/socket_non_stream_blocking.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_unix_seqpacket.cc b/test/syscalls/linux/socket_unix_seqpacket.cc index 6f6367dd5..84d3a569e 100644 --- a/test/syscalls/linux/socket_unix_seqpacket.cc +++ b/test/syscalls/linux/socket_unix_seqpacket.cc @@ -16,7 +16,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_unix_stream.cc b/test/syscalls/linux/socket_unix_stream.cc index 8f38ed92f..563467365 100644 --- a/test/syscalls/linux/socket_unix_stream.cc +++ b/test/syscalls/linux/socket_unix_stream.cc @@ -17,7 +17,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_unix_stream_blocking_local.cc b/test/syscalls/linux/socket_unix_stream_blocking_local.cc index fa0a9d367..08e579ba7 100644 --- a/test/syscalls/linux/socket_unix_stream_blocking_local.cc +++ b/test/syscalls/linux/socket_unix_stream_blocking_local.cc @@ -12,10 +12,9 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include "test/syscalls/linux/socket_stream_blocking.h" - #include <vector> +#include "test/syscalls/linux/socket_stream_blocking.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_unix_stream_nonblock_local.cc b/test/syscalls/linux/socket_unix_stream_nonblock_local.cc index ec777c59f..1936aa135 100644 --- a/test/syscalls/linux/socket_unix_stream_nonblock_local.cc +++ b/test/syscalls/linux/socket_unix_stream_nonblock_local.cc @@ -11,10 +11,9 @@ // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. -#include "test/syscalls/linux/socket_stream_nonblock.h" - #include <vector> +#include "test/syscalls/linux/socket_stream_nonblock.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_unix_unbound_abstract.cc b/test/syscalls/linux/socket_unix_unbound_abstract.cc index 4b5832de8..8b1762000 100644 --- a/test/syscalls/linux/socket_unix_unbound_abstract.cc +++ b/test/syscalls/linux/socket_unix_unbound_abstract.cc @@ -14,7 +14,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_unix_unbound_dgram.cc b/test/syscalls/linux/socket_unix_unbound_dgram.cc index 52aef891f..907dca0f1 100644 --- a/test/syscalls/linux/socket_unix_unbound_dgram.cc +++ b/test/syscalls/linux/socket_unix_unbound_dgram.cc @@ -17,7 +17,6 @@ #include <sys/un.h> #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include "test/util/test_util.h" diff --git a/test/syscalls/linux/socket_unix_unbound_filesystem.cc b/test/syscalls/linux/socket_unix_unbound_filesystem.cc index 8cb03c450..cab912152 100644 --- a/test/syscalls/linux/socket_unix_unbound_filesystem.cc +++ b/test/syscalls/linux/socket_unix_unbound_filesystem.cc @@ -14,7 +14,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_unix_unbound_seqpacket.cc b/test/syscalls/linux/socket_unix_unbound_seqpacket.cc index 0575f2e1d..cb99030f5 100644 --- a/test/syscalls/linux/socket_unix_unbound_seqpacket.cc +++ b/test/syscalls/linux/socket_unix_unbound_seqpacket.cc @@ -14,7 +14,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/socket_unix_unbound_stream.cc b/test/syscalls/linux/socket_unix_unbound_stream.cc index e483d2777..f185dded3 100644 --- a/test/syscalls/linux/socket_unix_unbound_stream.cc +++ b/test/syscalls/linux/socket_unix_unbound_stream.cc @@ -14,7 +14,7 @@ #include <stdio.h> #include <sys/un.h> -#include "gtest/gtest.h" + #include "gtest/gtest.h" #include "test/syscalls/linux/socket_test_util.h" #include "test/syscalls/linux/unix_domain_socket_test_util.h" diff --git a/test/syscalls/linux/stat.cc b/test/syscalls/linux/stat.cc index 88ab90b5b..30de2f8ff 100644 --- a/test/syscalls/linux/stat.cc +++ b/test/syscalls/linux/stat.cc @@ -24,7 +24,6 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "gtest/gtest.h" #include "absl/strings/match.h" #include "absl/strings/str_cat.h" #include "absl/strings/string_view.h" diff --git a/test/syscalls/linux/sync.cc b/test/syscalls/linux/sync.cc index fe479390d..8aa2525a9 100644 --- a/test/syscalls/linux/sync.cc +++ b/test/syscalls/linux/sync.cc @@ -14,10 +14,9 @@ #include <fcntl.h> #include <stdio.h> -#include <unistd.h> - #include <sys/syscall.h> #include <unistd.h> + #include <string> #include "gtest/gtest.h" diff --git a/test/syscalls/linux/tcp_socket.cc b/test/syscalls/linux/tcp_socket.cc index bfa031bce..6b99c021d 100644 --- a/test/syscalls/linux/tcp_socket.cc +++ b/test/syscalls/linux/tcp_socket.cc @@ -130,6 +130,19 @@ void TcpSocketTest::TearDown() { } } +TEST_P(TcpSocketTest, ConnectOnEstablishedConnection) { + sockaddr_storage addr = + ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); + socklen_t addrlen = sizeof(addr); + + ASSERT_THAT( + connect(s_, reinterpret_cast<const struct sockaddr*>(&addr), addrlen), + SyscallFailsWithErrno(EISCONN)); + ASSERT_THAT( + connect(t_, reinterpret_cast<const struct sockaddr*>(&addr), addrlen), + SyscallFailsWithErrno(EISCONN)); +} + TEST_P(TcpSocketTest, DataCoalesced) { char buf[10]; @@ -394,8 +407,15 @@ TEST_P(TcpSocketTest, PollWithFullBufferBlocks) { sizeof(tcp_nodelay_flag)), SyscallSucceeds()); + // Set a 256KB send/receive buffer. + int buf_sz = 1 << 18; + EXPECT_THAT(setsockopt(t_, SOL_SOCKET, SO_RCVBUF, &buf_sz, sizeof(buf_sz)), + SyscallSucceedsWithValue(0)); + EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_SNDBUF, &buf_sz, sizeof(buf_sz)), + SyscallSucceedsWithValue(0)); + // Create a large buffer that will be used for sending. - std::vector<char> buf(10 * sendbuf_size_); + std::vector<char> buf(1 << 16); // Write until we receive an error. while (RetryEINTR(send)(s_, buf.data(), buf.size(), 0) != -1) { @@ -405,6 +425,11 @@ TEST_P(TcpSocketTest, PollWithFullBufferBlocks) { } // The last error should have been EWOULDBLOCK. ASSERT_EQ(errno, EWOULDBLOCK); + + // Now polling on the FD with a timeout should return 0 corresponding to no + // FDs ready. + struct pollfd poll_fd = {s_, POLLOUT, 0}; + EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10), SyscallSucceedsWithValue(0)); } TEST_P(TcpSocketTest, MsgTrunc) { @@ -942,6 +967,78 @@ TEST_P(SimpleTcpSocketTest, BlockingConnectRefused) { EXPECT_THAT(close(s.release()), SyscallSucceeds()); } +// Test that connecting to a non-listening port and thus receiving a RST is +// handled appropriately by the socket - the port that the socket was bound to +// is released and the expected error is returned. +TEST_P(SimpleTcpSocketTest, CleanupOnConnectionRefused) { + // Create a socket that is known to not be listening. As is it bound but not + // listening, when another socket connects to the port, it will refuse.. + FileDescriptor bound_s = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); + + sockaddr_storage bound_addr = + ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); + socklen_t bound_addrlen = sizeof(bound_addr); + + ASSERT_THAT( + bind(bound_s.get(), reinterpret_cast<struct sockaddr*>(&bound_addr), + bound_addrlen), + SyscallSucceeds()); + + // Get the addresses the socket is bound to because the port is chosen by the + // stack. + ASSERT_THAT(getsockname(bound_s.get(), + reinterpret_cast<struct sockaddr*>(&bound_addr), + &bound_addrlen), + SyscallSucceeds()); + + // Create, initialize, and bind the socket that is used to test connecting to + // the non-listening port. + FileDescriptor client_s = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); + // Initialize client address to the loopback one. + sockaddr_storage client_addr = + ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); + socklen_t client_addrlen = sizeof(client_addr); + + ASSERT_THAT( + bind(client_s.get(), reinterpret_cast<struct sockaddr*>(&client_addr), + client_addrlen), + SyscallSucceeds()); + + ASSERT_THAT(getsockname(client_s.get(), + reinterpret_cast<struct sockaddr*>(&client_addr), + &client_addrlen), + SyscallSucceeds()); + + // Now the test: connect to the bound but not listening socket with the + // client socket. The bound socket should return a RST and cause the client + // socket to return an error and clean itself up immediately. + // The error being ECONNREFUSED diverges with RFC 793, page 37, but does what + // Linux does. + ASSERT_THAT(connect(client_s.get(), + reinterpret_cast<const struct sockaddr*>(&bound_addr), + bound_addrlen), + SyscallFailsWithErrno(ECONNREFUSED)); + + FileDescriptor new_s = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); + + // Test binding to the address from the client socket. This should be okay + // if it was dropped correctly. + ASSERT_THAT( + bind(new_s.get(), reinterpret_cast<struct sockaddr*>(&client_addr), + client_addrlen), + SyscallSucceeds()); + + // Attempt #2, with the new socket and reused addr our connect should fail in + // the same way as before, not with an EADDRINUSE. + ASSERT_THAT(connect(client_s.get(), + reinterpret_cast<const struct sockaddr*>(&bound_addr), + bound_addrlen), + SyscallFailsWithErrno(ECONNREFUSED)); +} + // Test that we get an ECONNREFUSED with a nonblocking socket. TEST_P(SimpleTcpSocketTest, NonBlockingConnectRefused) { FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( @@ -1150,6 +1247,31 @@ TEST_P(SimpleTcpSocketTest, SetMaxSegFailsForInvalidMSSValues) { } } +TEST_P(SimpleTcpSocketTest, SetTCPUserTimeout) { + FileDescriptor s = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); + + { + constexpr int kTCPUserTimeout = -1; + EXPECT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &kTCPUserTimeout, sizeof(kTCPUserTimeout)), + SyscallFailsWithErrno(EINVAL)); + } + + // kTCPUserTimeout is in milliseconds. + constexpr int kTCPUserTimeout = 100; + ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, + &kTCPUserTimeout, sizeof(kTCPUserTimeout)), + SyscallSucceedsWithValue(0)); + int get = -1; + socklen_t get_len = sizeof(get); + ASSERT_THAT( + getsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, &get, &get_len), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(get_len, sizeof(get)); + EXPECT_EQ(get, kTCPUserTimeout); +} + INSTANTIATE_TEST_SUITE_P(AllInetTests, SimpleTcpSocketTest, ::testing::Values(AF_INET, AF_INET6)); diff --git a/test/syscalls/linux/truncate.cc b/test/syscalls/linux/truncate.cc index e5cc5d97c..c988c6380 100644 --- a/test/syscalls/linux/truncate.cc +++ b/test/syscalls/linux/truncate.cc @@ -19,6 +19,7 @@ #include <sys/vfs.h> #include <time.h> #include <unistd.h> + #include <iostream> #include <string> diff --git a/test/syscalls/linux/udp_socket.cc b/test/syscalls/linux/udp_socket.cc index 111dbacdf..7a8ac30a4 100644 --- a/test/syscalls/linux/udp_socket.cc +++ b/test/syscalls/linux/udp_socket.cc @@ -12,1332 +12,13 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include <arpa/inet.h> -#include <fcntl.h> -#include <linux/errqueue.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" +#include "test/syscalls/linux/udp_socket_test_cases.h" namespace gvisor { namespace testing { namespace { -// The initial port to be be used on gvisor. -constexpr int TestPort = 40000; - -// Fixture for tests parameterized by the address family to use (AF_INET and -// AF_INET6) when creating sockets. -class UdpSocketTest : public ::testing::TestWithParam<AddressFamily> { - protected: - // Creates two sockets that will be used by test cases. - void SetUp() override; - - // Closes the sockets created by SetUp(). - void TearDown() override { - EXPECT_THAT(close(s_), SyscallSucceeds()); - EXPECT_THAT(close(t_), SyscallSucceeds()); - - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - ASSERT_NO_ERRNO(FreeAvailablePort(ports_[i])); - } - } - - // First UDP socket. - int s_; - - // Second UDP socket. - int t_; - - // The length of the socket address. - socklen_t addrlen_; - - // Initialized address pointing to loopback and port TestPort+i. - struct sockaddr* addr_[3]; - - // Initialize "any" address. - struct sockaddr* anyaddr_; - - // Used ports. - int ports_[3]; - - private: - // Storage for the loopback addresses. - struct sockaddr_storage addr_storage_[3]; - - // Storage for the "any" address. - struct sockaddr_storage anyaddr_storage_; -}; - -// Gets a pointer to the port component of the given address. -uint16_t* Port(struct sockaddr_storage* addr) { - switch (addr->ss_family) { - case AF_INET: { - auto sin = reinterpret_cast<struct sockaddr_in*>(addr); - return &sin->sin_port; - } - case AF_INET6: { - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr); - return &sin6->sin6_port; - } - } - - return nullptr; -} - -void UdpSocketTest::SetUp() { - int type; - if (GetParam() == AddressFamily::kIpv4) { - type = AF_INET; - auto sin = reinterpret_cast<struct sockaddr_in*>(&anyaddr_storage_); - addrlen_ = sizeof(*sin); - sin->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - type = AF_INET6; - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(&anyaddr_storage_); - addrlen_ = sizeof(*sin6); - if (GetParam() == AddressFamily::kIpv6) { - sin6->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - sin6->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - - ASSERT_THAT(t_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - - memset(&anyaddr_storage_, 0, sizeof(anyaddr_storage_)); - anyaddr_ = reinterpret_cast<struct sockaddr*>(&anyaddr_storage_); - anyaddr_->sa_family = type; - - if (gvisor::testing::IsRunningOnGvisor()) { - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - ports_[i] = TestPort + i; - } - } else { - // When not under gvisor, use utility function to pick port. Assert that - // all ports are different. - std::string error; - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - // Find an unused port, we specify port 0 to allow the kernel to provide - // the port. - bool unique = true; - do { - ports_[i] = ASSERT_NO_ERRNO_AND_VALUE(PortAvailable( - 0, AddressFamily::kDualStack, SocketType::kUdp, false)); - ASSERT_GT(ports_[i], 0); - for (size_t j = 0; j < i; ++j) { - if (ports_[j] == ports_[i]) { - unique = false; - break; - } - } - } while (!unique); - } - } - - // Initialize the sockaddrs. - for (size_t i = 0; i < ABSL_ARRAYSIZE(addr_); ++i) { - memset(&addr_storage_[i], 0, sizeof(addr_storage_[i])); - - addr_[i] = reinterpret_cast<struct sockaddr*>(&addr_storage_[i]); - addr_[i]->sa_family = type; - - switch (type) { - case AF_INET: { - auto sin = reinterpret_cast<struct sockaddr_in*>(addr_[i]); - sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); - sin->sin_port = htons(ports_[i]); - break; - } - case AF_INET6: { - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr_[i]); - sin6->sin6_addr = in6addr_loopback; - sin6->sin6_port = htons(ports_[i]); - break; - } - } - } -} - -TEST_P(UdpSocketTest, Creation) { - int type = AF_INET6; - if (GetParam() == AddressFamily::kIpv4) { - type = AF_INET; - } - - int s_; - - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - EXPECT_THAT(close(s_), SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, 0), SyscallSucceeds()); - EXPECT_THAT(close(s_), SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(type, SOCK_STREAM, IPPROTO_UDP), SyscallFails()); -} - -TEST_P(UdpSocketTest, Getsockname) { - // Check that we're not bound. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, anyaddr_, addrlen_), 0); - - // Bind, then check that we get the right address. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, Getpeername) { - // Check that we're not connected. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Connect, then check that we get the right address. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, SendNotConnected) { - // Do send & write, they must fail. - char buf[512]; - EXPECT_THAT(send(s_, buf, sizeof(buf), 0), - SyscallFailsWithErrno(EDESTADDRREQ)); - - EXPECT_THAT(write(s_, buf, sizeof(buf)), SyscallFailsWithErrno(EDESTADDRREQ)); - - // Use sendto. - ASSERT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ConnectBinds) { - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ReceiveNotBound) { - char buf[512]; - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, Bind) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Try to bind again. - EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); - - // Check that we're still bound to the original address. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, BindInUse) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Try to bind again. - EXPECT_THAT(bind(t_, addr_[0], addrlen_), SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(UdpSocketTest, ReceiveAfterConnect) { - // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Get the address s_ was bound to during connect. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - // Send from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveAfterDisconnect) { - // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Get the address s_ was bound to during connect. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - for (int i = 0; i < 2; i++) { - // Send from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Disconnect s_. - struct sockaddr addr = {}; - addr.sa_family = AF_UNSPEC; - ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), SyscallSucceeds()); - // Connect s_ loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - } -} - -TEST_P(UdpSocketTest, Connect) { - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[0], addrlen_), 0); - - // Try to bind after connect. - EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); - - // Try to connect again. - EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Check that peer name changed. - peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); -} - -void ConnectAny(AddressFamily family, int sockfd, uint16_t port) { - struct sockaddr_storage addr = {}; - - // Precondition check. - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr any = IN6ADDR_ANY_INIT; - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &any, sizeof(in6_addr)), 0); - } - - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - } - - struct sockaddr_storage baddr = {}; - if (family == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin_family = AF_INET; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - addr_in->sin_port = port; - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - if (family == AddressFamily::kIpv6) { - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - addr_in->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - - // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. - if (port == 0) { - SKIP_IF(IsRunningOnGvisor()); - } - - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), - SyscallSucceeds()); - } - - // Postcondition check. - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr loopback; - if (family == AddressFamily::kIpv6) { - loopback = IN6ADDR_LOOPBACK_INIT; - } else { - TestAddress const& v4_mapped_loopback = V4MappedLoopback(); - loopback = reinterpret_cast<const struct sockaddr_in6*>( - &v4_mapped_loopback.addr) - ->sin6_addr; - } - - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } - - addrlen = sizeof(addr); - if (port == 0) { - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - } else { - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - } - } -} - -TEST_P(UdpSocketTest, ConnectAny) { ConnectAny(GetParam(), s_, 0); } - -TEST_P(UdpSocketTest, ConnectAnyWithPort) { - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - ConnectAny(GetParam(), s_, port); -} - -void DisconnectAfterConnectAny(AddressFamily family, int sockfd, int port) { - struct sockaddr_storage addr = {}; - - socklen_t addrlen = sizeof(addr); - struct sockaddr_storage baddr = {}; - if (family == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin_family = AF_INET; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - addr_in->sin_port = port; - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - if (family == AddressFamily::kIpv6) { - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - addr_in->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - - // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. - if (port == 0) { - SKIP_IF(IsRunningOnGvisor()); - } - - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), - SyscallSucceeds()); - // Now the socket is bound to the loopback address. - - // Disconnect - addrlen = sizeof(addr); - addr.ss_family = AF_UNSPEC; - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - // Check that after disconnect the socket is bound to the ANY address. - EXPECT_THAT(getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr loopback = IN6ADDR_ANY_INIT; - - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAny) { - DisconnectAfterConnectAny(GetParam(), s_, 0); -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAnyWithPort) { - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - DisconnectAfterConnectAny(GetParam(), s_, port); -} - -TEST_P(UdpSocketTest, DisconnectAfterBind) { - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, DisconnectAfterBindToAny) { - struct sockaddr_storage baddr = {}; - socklen_t addrlen; - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - if (GetParam() == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addr_in->sin_family = AF_INET; - addr_in->sin_port = port; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - addr_in->sin6_scope_id = 0; - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } - ASSERT_THAT(bind(s_, reinterpret_cast<sockaddr*>(&baddr), addrlen_), - SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, &baddr, addrlen), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, Disconnect) { - for (int i = 0; i < 2; i++) { - // Try to connect again. - EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); - - // Try to disconnect. - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(*Port(&addr), 0); - } -} - -TEST_P(UdpSocketTest, ConnectBadAddress) { - struct sockaddr addr = {}; - addr.sa_family = addr_[0]->sa_family; - ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) { - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send to a different destination than we're connected to. - char buf[512]; - EXPECT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[1], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowed) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from s_ to t_. - ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Receive the packet. - char received[3]; - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Set t_ to non-blocking. - int opts = 0; - ASSERT_THAT(opts = fcntl(t_, F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(t_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from s_ to t_. - ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Receive the packet. - char received[3]; - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(UdpSocketTest, SendAndReceiveNotConnected) { - // Bind s_ to loopback. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send some data to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, SendAndReceiveConnected) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveFromNotConnected) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that the data isn't_ received because it was sent from a different - // address than we're connected. - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveBeforeConnect) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Connect to loopback:TestPort+1. - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Receive the data. It works because it was sent before the connect. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Send again. This time it should not be received. - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveFrom) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data and sender address. - char received[sizeof(buf)]; - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(recvfrom(s_, received, sizeof(received), 0, - reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); -} - -TEST_P(UdpSocketTest, Listen) { - ASSERT_THAT(listen(s_, SOMAXCONN), SyscallFailsWithErrno(EOPNOTSUPP)); -} - -TEST_P(UdpSocketTest, Accept) { - ASSERT_THAT(accept(s_, nullptr, nullptr), SyscallFailsWithErrno(EOPNOTSUPP)); -} - -// This test validates that a read shutdown with pending data allows the read -// to proceed with the data before returning EAGAIN. -TEST_P(UdpSocketTest, ReadShutdownNonblockPendingData) { - char received[512]; - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Verify that we get EWOULDBLOCK when there is nothing to read. - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - const char* buf = "abc"; - EXPECT_THAT(write(t_, buf, 3), SyscallSucceedsWithValue(3)); - - int opts = 0; - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(s_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - ASSERT_NE(opts & O_NONBLOCK, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - // We should get the data even though read has been shutdown. - EXPECT_THAT(recv(s_, received, 2, 0), SyscallSucceedsWithValue(2)); - - // Because we read less than the entire packet length, since it's a packet - // based socket any subsequent reads should return EWOULDBLOCK. - EXPECT_THAT(recv(s_, received, 1, 0), SyscallFailsWithErrno(EWOULDBLOCK)); -} - -// This test is validating that even after a socket is shutdown if it's -// reconnected it will reset the shutdown state. -TEST_P(UdpSocketTest, ReadShutdownSameSocketResetsShutdownState) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReadShutdown) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ReadShutdownDifferentThread) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then shutdown from another thread. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - EXPECT_THAT(shutdown(this->s_, SHUT_RD), SyscallSucceeds()); - }); - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); - t.Join(); - - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, WriteShutdown) { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallSucceeds()); -} - -TEST_P(UdpSocketTest, SynchronousReceive) { - // Bind s_ to loopback. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send some data to s_ from another thread. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - // Receive the data prior to actually starting the other thread. - char received[512]; - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Start the thread. - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - ASSERT_THAT( - sendto(this->t_, buf, sizeof(buf), 0, this->addr_[0], this->addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - }); - - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(512)); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendRecv) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(psize)); - } - - // Receive the data as 3 separate packets. - char received[6 * psize]; - for (int i = 0; i < 3; ++i) { - EXPECT_THAT(recv(s_, received + i * psize, 3 * psize, 0), - SyscallSucceedsWithValue(psize)); - } - EXPECT_EQ(memcmp(buf, received, 3 * psize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_WritevReadv) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Direct writes from t_ to s_. - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 2 packets from t_ to s_, where each packet's data consists of 2 - // discontiguous iovecs. - constexpr size_t kPieceSize = 100; - char buf[4 * kPieceSize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 2; i++) { - struct iovec iov[2]; - for (int j = 0; j < 2; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(writev(t_, iov, 2), SyscallSucceedsWithValue(2 * kPieceSize)); - } - - // Receive the data as 2 separate packets. - char received[6 * kPieceSize]; - for (int i = 0; i < 2; i++) { - struct iovec iov[3]; - for (int j = 0; j < 3; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(readv(s_, iov, 3), SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendMsgRecvMsg) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 2 packets from t_ to s_, where each packet's data consists of 2 - // discontiguous iovecs. - constexpr size_t kPieceSize = 100; - char buf[4 * kPieceSize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 2; i++) { - struct iovec iov[2]; - for (int j = 0; j < 2; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_name = addr_[0]; - msg.msg_namelen = addrlen_; - msg.msg_iov = iov; - msg.msg_iovlen = 2; - ASSERT_THAT(sendmsg(t_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); - } - - // Receive the data as 2 separate packets. - char received[6 * kPieceSize]; - for (int i = 0; i < 2; i++) { - struct iovec iov[3]; - for (int j = 0; j < 3; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_iov = iov; - msg.msg_iovlen = 3; - ASSERT_THAT(recvmsg(s_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, FIONREADShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, FIONREADWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(s_, str, sizeof(str), 0), - SyscallSucceedsWithValue(sizeof(str))); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); -} - -TEST_P(UdpSocketTest, FIONREAD) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(psize)); - - // Check that regardless of how many packets are in the queue, the size - // reported is that of a single packet. - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, psize); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthPacket) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, 0, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(0)); - - // Check that regardless of how many packets are in the queue, the size - // reported is that of a single packet. - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(s_, str, 0, 0), SyscallSucceedsWithValue(0)); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, ErrorQueue) { - char cmsgbuf[CMSG_SPACE(sizeof(sock_extended_err))]; - msghdr msg; - memset(&msg, 0, sizeof(msg)); - iovec iov; - memset(&iov, 0, sizeof(iov)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - - // recv*(MSG_ERRQUEUE) never blocks, even without MSG_DONTWAIT. - EXPECT_THAT(RetryEINTR(recvmsg)(s_, &msg, MSG_ERRQUEUE), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(UdpSocketTest, SoTimestampOffByDefault) { - int v = -1; - socklen_t optlen = sizeof(v); - ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, &optlen), - SyscallSucceeds()); - ASSERT_EQ(v, kSockOptOff); - ASSERT_EQ(optlen, sizeof(v)); -} - -TEST_P(UdpSocketTest, SoTimestamp) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - int v = 1; - ASSERT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; - msghdr msg; - memset(&msg, 0, sizeof(msg)); - iovec iov; - memset(&iov, 0, sizeof(iov)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SO_TIMESTAMP); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct timeval))); - - struct timeval tv = {}; - memcpy(&tv, CMSG_DATA(cmsg), sizeof(struct timeval)); - - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); - - // There should be nothing to get via ioctl. - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); -} - -TEST_P(UdpSocketTest, WriteShutdownNotConnected) { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, TimestampIoctl) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); -} - -TEST_P(UdpSocketTest, TimetstampIoctlNothingRead) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); -} - -// Test that the timestamp accessed via SIOCGSTAMP is still accessible after -// SO_TIMESTAMP is enabled and used to retrieve a timestamp. -TEST_P(UdpSocketTest, TimestampIoctlPersistence) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); - - // Enable SO_TIMESTAMP and send a message. - int v = 1; - EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - // There should be a message for SO_TIMESTAMP. - char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; - msghdr msg = {}; - iovec iov = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - - // The ioctl should return the exact same values as before. - struct timeval tv2 = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv2), SyscallSucceeds()); - ASSERT_EQ(tv.tv_sec, tv2.tv_sec); - ASSERT_EQ(tv.tv_usec, tv2.tv_usec); -} - INSTANTIATE_TEST_SUITE_P(AllInetTests, UdpSocketTest, ::testing::Values(AddressFamily::kIpv4, AddressFamily::kIpv6, diff --git a/test/syscalls/linux/udp_socket_errqueue_test_case.cc b/test/syscalls/linux/udp_socket_errqueue_test_case.cc new file mode 100644 index 000000000..147978f46 --- /dev/null +++ b/test/syscalls/linux/udp_socket_errqueue_test_case.cc @@ -0,0 +1,54 @@ +// Copyright 2018 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "test/syscalls/linux/udp_socket_test_cases.h" + +#include <arpa/inet.h> +#include <fcntl.h> +#include <linux/errqueue.h> +#include <netinet/in.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/types.h> + +#include "gtest/gtest.h" +#include "absl/base/macros.h" +#include "absl/time/clock.h" +#include "absl/time/time.h" +#include "test/syscalls/linux/socket_test_util.h" +#include "test/syscalls/linux/unix_domain_socket_test_util.h" +#include "test/util/test_util.h" +#include "test/util/thread_util.h" + +namespace gvisor { +namespace testing { + +TEST_P(UdpSocketTest, ErrorQueue) { + char cmsgbuf[CMSG_SPACE(sizeof(sock_extended_err))]; + msghdr msg; + memset(&msg, 0, sizeof(msg)); + iovec iov; + memset(&iov, 0, sizeof(iov)); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = cmsgbuf; + msg.msg_controllen = sizeof(cmsgbuf); + + // recv*(MSG_ERRQUEUE) never blocks, even without MSG_DONTWAIT. + EXPECT_THAT(RetryEINTR(recvmsg)(s_, &msg, MSG_ERRQUEUE), + SyscallFailsWithErrno(EAGAIN)); +} + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/udp_socket_test_cases.cc b/test/syscalls/linux/udp_socket_test_cases.cc new file mode 100644 index 000000000..dc35c2f50 --- /dev/null +++ b/test/syscalls/linux/udp_socket_test_cases.cc @@ -0,0 +1,1498 @@ +// Copyright 2018 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "test/syscalls/linux/udp_socket_test_cases.h" + +#include <arpa/inet.h> +#include <fcntl.h> +#include <netinet/in.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/types.h> + +#include "gtest/gtest.h" +#include "absl/base/macros.h" +#include "absl/time/clock.h" +#include "absl/time/time.h" +#include "test/syscalls/linux/socket_test_util.h" +#include "test/syscalls/linux/unix_domain_socket_test_util.h" +#include "test/util/test_util.h" +#include "test/util/thread_util.h" + +namespace gvisor { +namespace testing { + +// Gets a pointer to the port component of the given address. +uint16_t* Port(struct sockaddr_storage* addr) { + switch (addr->ss_family) { + case AF_INET: { + auto sin = reinterpret_cast<struct sockaddr_in*>(addr); + return &sin->sin_port; + } + case AF_INET6: { + auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr); + return &sin6->sin6_port; + } + } + + return nullptr; +} + +void UdpSocketTest::SetUp() { + int type; + if (GetParam() == AddressFamily::kIpv4) { + type = AF_INET; + auto sin = reinterpret_cast<struct sockaddr_in*>(&anyaddr_storage_); + addrlen_ = sizeof(*sin); + sin->sin_addr.s_addr = htonl(INADDR_ANY); + } else { + type = AF_INET6; + auto sin6 = reinterpret_cast<struct sockaddr_in6*>(&anyaddr_storage_); + addrlen_ = sizeof(*sin6); + if (GetParam() == AddressFamily::kIpv6) { + sin6->sin6_addr = IN6ADDR_ANY_INIT; + } else { + TestAddress const& v4_mapped_any = V4MappedAny(); + sin6->sin6_addr = + reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) + ->sin6_addr; + } + } + ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); + + ASSERT_THAT(t_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); + + memset(&anyaddr_storage_, 0, sizeof(anyaddr_storage_)); + anyaddr_ = reinterpret_cast<struct sockaddr*>(&anyaddr_storage_); + anyaddr_->sa_family = type; + + if (gvisor::testing::IsRunningOnGvisor()) { + for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { + ports_[i] = TestPort + i; + } + } else { + // When not under gvisor, use utility function to pick port. Assert that + // all ports are different. + std::string error; + for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { + // Find an unused port, we specify port 0 to allow the kernel to provide + // the port. + bool unique = true; + do { + ports_[i] = ASSERT_NO_ERRNO_AND_VALUE(PortAvailable( + 0, AddressFamily::kDualStack, SocketType::kUdp, false)); + ASSERT_GT(ports_[i], 0); + for (size_t j = 0; j < i; ++j) { + if (ports_[j] == ports_[i]) { + unique = false; + break; + } + } + } while (!unique); + } + } + + // Initialize the sockaddrs. + for (size_t i = 0; i < ABSL_ARRAYSIZE(addr_); ++i) { + memset(&addr_storage_[i], 0, sizeof(addr_storage_[i])); + + addr_[i] = reinterpret_cast<struct sockaddr*>(&addr_storage_[i]); + addr_[i]->sa_family = type; + + switch (type) { + case AF_INET: { + auto sin = reinterpret_cast<struct sockaddr_in*>(addr_[i]); + sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + sin->sin_port = htons(ports_[i]); + break; + } + case AF_INET6: { + auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr_[i]); + sin6->sin6_addr = in6addr_loopback; + sin6->sin6_port = htons(ports_[i]); + break; + } + } + } +} + +TEST_P(UdpSocketTest, Creation) { + int type = AF_INET6; + if (GetParam() == AddressFamily::kIpv4) { + type = AF_INET; + } + + int s_; + + ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); + EXPECT_THAT(close(s_), SyscallSucceeds()); + + ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, 0), SyscallSucceeds()); + EXPECT_THAT(close(s_), SyscallSucceeds()); + + ASSERT_THAT(s_ = socket(type, SOCK_STREAM, IPPROTO_UDP), SyscallFails()); +} + +TEST_P(UdpSocketTest, Getsockname) { + // Check that we're not bound. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, anyaddr_, addrlen_), 0); + + // Bind, then check that we get the right address. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); +} + +TEST_P(UdpSocketTest, Getpeername) { + // Check that we're not connected. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); + + // Connect, then check that we get the right address. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + addrlen = sizeof(addr); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); +} + +TEST_P(UdpSocketTest, SendNotConnected) { + // Do send & write, they must fail. + char buf[512]; + EXPECT_THAT(send(s_, buf, sizeof(buf), 0), + SyscallFailsWithErrno(EDESTADDRREQ)); + + EXPECT_THAT(write(s_, buf, sizeof(buf)), SyscallFailsWithErrno(EDESTADDRREQ)); + + // Use sendto. + ASSERT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Check that we're bound now. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_NE(*Port(&addr), 0); +} + +TEST_P(UdpSocketTest, ConnectBinds) { + // Connect the socket. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Check that we're bound now. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_NE(*Port(&addr), 0); +} + +TEST_P(UdpSocketTest, ReceiveNotBound) { + char buf[512]; + EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, Bind) { + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Try to bind again. + EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); + + // Check that we're still bound to the original address. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); +} + +TEST_P(UdpSocketTest, BindInUse) { + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Try to bind again. + EXPECT_THAT(bind(t_, addr_[0], addrlen_), SyscallFailsWithErrno(EADDRINUSE)); +} + +TEST_P(UdpSocketTest, ReceiveAfterConnect) { + // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); + + // Get the address s_ was bound to during connect. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + + // Send from t_ to s_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, + reinterpret_cast<sockaddr*>(&addr), addrlen), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, ReceiveAfterDisconnect) { + // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); + + // Get the address s_ was bound to during connect. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + + for (int i = 0; i < 2; i++) { + // Send from t_ to s_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, + reinterpret_cast<sockaddr*>(&addr), addrlen), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); + + // Disconnect s_. + struct sockaddr addr = {}; + addr.sa_family = AF_UNSPEC; + ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), SyscallSucceeds()); + // Connect s_ loopback:TestPort. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + } +} + +TEST_P(UdpSocketTest, Connect) { + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Check that we're connected to the right peer. + struct sockaddr_storage peer; + socklen_t peerlen = sizeof(peer); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), + SyscallSucceeds()); + EXPECT_EQ(peerlen, addrlen_); + EXPECT_EQ(memcmp(&peer, addr_[0], addrlen_), 0); + + // Try to bind after connect. + EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); + + // Try to connect again. + EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); + + // Check that peer name changed. + peerlen = sizeof(peer); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), + SyscallSucceeds()); + EXPECT_EQ(peerlen, addrlen_); + EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); +} + +void ConnectAny(AddressFamily family, int sockfd, uint16_t port) { + struct sockaddr_storage addr = {}; + + // Precondition check. + { + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + + if (family == AddressFamily::kIpv4) { + auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); + } else { + auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + struct in6_addr any = IN6ADDR_ANY_INIT; + EXPECT_EQ(memcmp(&addr_out->sin6_addr, &any, sizeof(in6_addr)), 0); + } + + { + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); + } + + struct sockaddr_storage baddr = {}; + if (family == AddressFamily::kIpv4) { + auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); + addrlen = sizeof(*addr_in); + addr_in->sin_family = AF_INET; + addr_in->sin_addr.s_addr = htonl(INADDR_ANY); + addr_in->sin_port = port; + } else { + auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); + addrlen = sizeof(*addr_in); + addr_in->sin6_family = AF_INET6; + addr_in->sin6_port = port; + if (family == AddressFamily::kIpv6) { + addr_in->sin6_addr = IN6ADDR_ANY_INIT; + } else { + TestAddress const& v4_mapped_any = V4MappedAny(); + addr_in->sin6_addr = + reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) + ->sin6_addr; + } + } + + // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. + if (port == 0) { + SKIP_IF(IsRunningOnGvisor()); + } + + ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), + SyscallSucceeds()); + } + + // Postcondition check. + { + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + + if (family == AddressFamily::kIpv4) { + auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); + } else { + auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + struct in6_addr loopback; + if (family == AddressFamily::kIpv6) { + loopback = IN6ADDR_LOOPBACK_INIT; + } else { + TestAddress const& v4_mapped_loopback = V4MappedLoopback(); + loopback = reinterpret_cast<const struct sockaddr_in6*>( + &v4_mapped_loopback.addr) + ->sin6_addr; + } + + EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); + } + + addrlen = sizeof(addr); + if (port == 0) { + EXPECT_THAT( + getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); + } else { + EXPECT_THAT( + getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + } + } +} + +TEST_P(UdpSocketTest, ConnectAny) { ConnectAny(GetParam(), s_, 0); } + +TEST_P(UdpSocketTest, ConnectAnyWithPort) { + auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); + ConnectAny(GetParam(), s_, port); +} + +void DisconnectAfterConnectAny(AddressFamily family, int sockfd, int port) { + struct sockaddr_storage addr = {}; + + socklen_t addrlen = sizeof(addr); + struct sockaddr_storage baddr = {}; + if (family == AddressFamily::kIpv4) { + auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); + addrlen = sizeof(*addr_in); + addr_in->sin_family = AF_INET; + addr_in->sin_addr.s_addr = htonl(INADDR_ANY); + addr_in->sin_port = port; + } else { + auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); + addrlen = sizeof(*addr_in); + addr_in->sin6_family = AF_INET6; + addr_in->sin6_port = port; + if (family == AddressFamily::kIpv6) { + addr_in->sin6_addr = IN6ADDR_ANY_INIT; + } else { + TestAddress const& v4_mapped_any = V4MappedAny(); + addr_in->sin6_addr = + reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) + ->sin6_addr; + } + } + + // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. + if (port == 0) { + SKIP_IF(IsRunningOnGvisor()); + } + + ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), + SyscallSucceeds()); + // Now the socket is bound to the loopback address. + + // Disconnect + addrlen = sizeof(addr); + addr.ss_family = AF_UNSPEC; + ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&addr), addrlen), + SyscallSucceeds()); + + // Check that after disconnect the socket is bound to the ANY address. + EXPECT_THAT(getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + if (family == AddressFamily::kIpv4) { + auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); + } else { + auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + struct in6_addr loopback = IN6ADDR_ANY_INIT; + + EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); + } +} + +TEST_P(UdpSocketTest, DisconnectAfterConnectAny) { + DisconnectAfterConnectAny(GetParam(), s_, 0); +} + +TEST_P(UdpSocketTest, DisconnectAfterConnectAnyWithPort) { + auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); + DisconnectAfterConnectAny(GetParam(), s_, port); +} + +TEST_P(UdpSocketTest, DisconnectAfterBind) { + ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); + // Connect the socket. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + struct sockaddr_storage addr = {}; + addr.ss_family = AF_UNSPEC; + EXPECT_THAT( + connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), + SyscallSucceeds()); + + // Check that we're still bound. + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); + + addrlen = sizeof(addr); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, BindToAnyConnnectToLocalhost) { + struct sockaddr_storage baddr = {}; + auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); + if (GetParam() == AddressFamily::kIpv4) { + auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); + addr_in->sin_family = AF_INET; + addr_in->sin_port = port; + addr_in->sin_addr.s_addr = htonl(INADDR_ANY); + } else { + auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); + addr_in->sin6_family = AF_INET6; + addr_in->sin6_port = port; + addr_in->sin6_scope_id = 0; + addr_in->sin6_addr = IN6ADDR_ANY_INIT; + } + ASSERT_THAT(bind(s_, reinterpret_cast<sockaddr*>(&baddr), addrlen_), + SyscallSucceeds()); + // Connect the socket. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + struct sockaddr_storage addr = {}; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + + // If the socket is bound to ANY and connected to a loopback address, + // getsockname() has to return the loopback address. + if (GetParam() == AddressFamily::kIpv4) { + auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); + } else { + auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); + struct in6_addr loopback = IN6ADDR_LOOPBACK_INIT; + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); + } +} + +TEST_P(UdpSocketTest, DisconnectAfterBindToAny) { + struct sockaddr_storage baddr = {}; + socklen_t addrlen; + auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); + if (GetParam() == AddressFamily::kIpv4) { + auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); + addr_in->sin_family = AF_INET; + addr_in->sin_port = port; + addr_in->sin_addr.s_addr = htonl(INADDR_ANY); + } else { + auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); + addr_in->sin6_family = AF_INET6; + addr_in->sin6_port = port; + addr_in->sin6_scope_id = 0; + addr_in->sin6_addr = IN6ADDR_ANY_INIT; + } + ASSERT_THAT(bind(s_, reinterpret_cast<sockaddr*>(&baddr), addrlen_), + SyscallSucceeds()); + // Connect the socket. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + struct sockaddr_storage addr = {}; + addr.ss_family = AF_UNSPEC; + EXPECT_THAT( + connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), + SyscallSucceeds()); + + // Check that we're still bound. + addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, &baddr, addrlen), 0); + + addrlen = sizeof(addr); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, Disconnect) { + for (int i = 0; i < 2; i++) { + // Try to connect again. + EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); + + // Check that we're connected to the right peer. + struct sockaddr_storage peer; + socklen_t peerlen = sizeof(peer); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), + SyscallSucceeds()); + EXPECT_EQ(peerlen, addrlen_); + EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); + + // Try to disconnect. + struct sockaddr_storage addr = {}; + addr.ss_family = AF_UNSPEC; + EXPECT_THAT( + connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), + SyscallSucceeds()); + + peerlen = sizeof(peer); + EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), + SyscallFailsWithErrno(ENOTCONN)); + + // Check that we're still bound. + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(*Port(&addr), 0); + } +} + +TEST_P(UdpSocketTest, ConnectBadAddress) { + struct sockaddr addr = {}; + addr.sa_family = addr_[0]->sa_family; + ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), + SyscallFailsWithErrno(EINVAL)); +} + +TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) { + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Send to a different destination than we're connected to. + char buf[512]; + EXPECT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[1], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); +} + +TEST_P(UdpSocketTest, ZerolengthWriteAllowed) { + // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. + SKIP_IF(IsRunningWithHostinet()); + + // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); + + // Bind t_ to loopback:TestPort+1. + ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); + + char buf[3]; + // Send zero length packet from s_ to t_. + ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); + // Receive the packet. + char received[3]; + EXPECT_THAT(read(t_, received, sizeof(received)), + SyscallSucceedsWithValue(0)); +} + +TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) { + // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. + SKIP_IF(IsRunningWithHostinet()); + + // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); + + // Bind t_ to loopback:TestPort+1. + ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); + + // Set t_ to non-blocking. + int opts = 0; + ASSERT_THAT(opts = fcntl(t_, F_GETFL), SyscallSucceeds()); + ASSERT_THAT(fcntl(t_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); + + char buf[3]; + // Send zero length packet from s_ to t_. + ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); + // Receive the packet. + char received[3]; + EXPECT_THAT(read(t_, received, sizeof(received)), + SyscallSucceedsWithValue(0)); + EXPECT_THAT(read(t_, received, sizeof(received)), + SyscallFailsWithErrno(EAGAIN)); +} + +TEST_P(UdpSocketTest, SendAndReceiveNotConnected) { + // Bind s_ to loopback. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Send some data to s_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, SendAndReceiveConnected) { + // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); + + // Bind t_ to loopback:TestPort+1. + ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); + + // Send some data from t_ to s_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, ReceiveFromNotConnected) { + // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); + + // Bind t_ to loopback:TestPort+2. + ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); + + // Send some data from t_ to s_. + char buf[512]; + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Check that the data isn't_ received because it was sent from a different + // address than we're connected. + EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, ReceiveBeforeConnect) { + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Bind t_ to loopback:TestPort+2. + ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); + + // Send some data from t_ to s_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Connect to loopback:TestPort+1. + ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); + + // Receive the data. It works because it was sent before the connect. + char received[sizeof(buf)]; + EXPECT_THAT(recv(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); + + // Send again. This time it should not be received. + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, ReceiveFrom) { + // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); + + // Bind t_ to loopback:TestPort+1. + ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); + + // Send some data from t_ to s_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data and sender address. + char received[sizeof(buf)]; + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT(recvfrom(s_, received, sizeof(received), 0, + reinterpret_cast<sockaddr*>(&addr), &addrlen), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); +} + +TEST_P(UdpSocketTest, Listen) { + ASSERT_THAT(listen(s_, SOMAXCONN), SyscallFailsWithErrno(EOPNOTSUPP)); +} + +TEST_P(UdpSocketTest, Accept) { + ASSERT_THAT(accept(s_, nullptr, nullptr), SyscallFailsWithErrno(EOPNOTSUPP)); +} + +// This test validates that a read shutdown with pending data allows the read +// to proceed with the data before returning EAGAIN. +TEST_P(UdpSocketTest, ReadShutdownNonblockPendingData) { + char received[512]; + + // Bind t_ to loopback:TestPort+2. + ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); + + // Connect the socket, then try to shutdown again. + ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); + + // Verify that we get EWOULDBLOCK when there is nothing to read. + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + const char* buf = "abc"; + EXPECT_THAT(write(t_, buf, 3), SyscallSucceedsWithValue(3)); + + int opts = 0; + ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); + ASSERT_THAT(fcntl(s_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); + ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); + ASSERT_NE(opts & O_NONBLOCK, 0); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); + + // We should get the data even though read has been shutdown. + EXPECT_THAT(recv(s_, received, 2, 0), SyscallSucceedsWithValue(2)); + + // Because we read less than the entire packet length, since it's a packet + // based socket any subsequent reads should return EWOULDBLOCK. + EXPECT_THAT(recv(s_, received, 1, 0), SyscallFailsWithErrno(EWOULDBLOCK)); +} + +// This test is validating that even after a socket is shutdown if it's +// reconnected it will reset the shutdown state. +TEST_P(UdpSocketTest, ReadShutdownSameSocketResetsShutdownState) { + char received[512]; + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); + + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Connect the socket, then try to shutdown again. + ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); + + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, ReadShutdown) { + // TODO(gvisor.dev/issue/1202): Calling recv() after shutdown without + // MSG_DONTWAIT blocks indefinitely. + SKIP_IF(IsRunningWithHostinet()); + + char received[512]; + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); + + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Connect the socket, then try to shutdown again. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); + + EXPECT_THAT(recv(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(0)); +} + +TEST_P(UdpSocketTest, ReadShutdownDifferentThread) { + // TODO(gvisor.dev/issue/1202): Calling recv() after shutdown without + // MSG_DONTWAIT blocks indefinitely. + SKIP_IF(IsRunningWithHostinet()); + + char received[512]; + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Connect the socket, then shutdown from another thread. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + ScopedThread t([&] { + absl::SleepFor(absl::Milliseconds(200)); + EXPECT_THAT(shutdown(this->s_, SHUT_RD), SyscallSucceeds()); + }); + EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(0)); + t.Join(); + + EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(0)); +} + +TEST_P(UdpSocketTest, WriteShutdown) { + EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallSucceeds()); +} + +TEST_P(UdpSocketTest, SynchronousReceive) { + // Bind s_ to loopback. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Send some data to s_ from another thread. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + // Receive the data prior to actually starting the other thread. + char received[512]; + EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Start the thread. + ScopedThread t([&] { + absl::SleepFor(absl::Milliseconds(200)); + ASSERT_THAT( + sendto(this->t_, buf, sizeof(buf), 0, this->addr_[0], this->addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + }); + + EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), + SyscallSucceedsWithValue(512)); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, BoundaryPreserved_SendRecv) { + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Send 3 packets from t_ to s_. + constexpr int psize = 100; + char buf[3 * psize]; + RandomizeBuffer(buf, sizeof(buf)); + + for (int i = 0; i < 3; ++i) { + ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(psize)); + } + + // Receive the data as 3 separate packets. + char received[6 * psize]; + for (int i = 0; i < 3; ++i) { + EXPECT_THAT(recv(s_, received + i * psize, 3 * psize, 0), + SyscallSucceedsWithValue(psize)); + } + EXPECT_EQ(memcmp(buf, received, 3 * psize), 0); +} + +TEST_P(UdpSocketTest, BoundaryPreserved_WritevReadv) { + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Direct writes from t_ to s_. + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + // Send 2 packets from t_ to s_, where each packet's data consists of 2 + // discontiguous iovecs. + constexpr size_t kPieceSize = 100; + char buf[4 * kPieceSize]; + RandomizeBuffer(buf, sizeof(buf)); + + for (int i = 0; i < 2; i++) { + struct iovec iov[2]; + for (int j = 0; j < 2; j++) { + iov[j].iov_base = reinterpret_cast<void*>( + reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + ASSERT_THAT(writev(t_, iov, 2), SyscallSucceedsWithValue(2 * kPieceSize)); + } + + // Receive the data as 2 separate packets. + char received[6 * kPieceSize]; + for (int i = 0; i < 2; i++) { + struct iovec iov[3]; + for (int j = 0; j < 3; j++) { + iov[j].iov_base = reinterpret_cast<void*>( + reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + ASSERT_THAT(readv(s_, iov, 3), SyscallSucceedsWithValue(2 * kPieceSize)); + } + EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); +} + +TEST_P(UdpSocketTest, BoundaryPreserved_SendMsgRecvMsg) { + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Send 2 packets from t_ to s_, where each packet's data consists of 2 + // discontiguous iovecs. + constexpr size_t kPieceSize = 100; + char buf[4 * kPieceSize]; + RandomizeBuffer(buf, sizeof(buf)); + + for (int i = 0; i < 2; i++) { + struct iovec iov[2]; + for (int j = 0; j < 2; j++) { + iov[j].iov_base = reinterpret_cast<void*>( + reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + struct msghdr msg = {}; + msg.msg_name = addr_[0]; + msg.msg_namelen = addrlen_; + msg.msg_iov = iov; + msg.msg_iovlen = 2; + ASSERT_THAT(sendmsg(t_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); + } + + // Receive the data as 2 separate packets. + char received[6 * kPieceSize]; + for (int i = 0; i < 2; i++) { + struct iovec iov[3]; + for (int j = 0; j < 3; j++) { + iov[j].iov_base = reinterpret_cast<void*>( + reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + struct msghdr msg = {}; + msg.msg_iov = iov; + msg.msg_iovlen = 3; + ASSERT_THAT(recvmsg(s_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); + } + EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); +} + +TEST_P(UdpSocketTest, FIONREADShutdown) { + int n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // A UDP socket must be connected before it can be shutdown. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); +} + +TEST_P(UdpSocketTest, FIONREADWriteShutdown) { + int n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // A UDP socket must be connected before it can be shutdown. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + const char str[] = "abc"; + ASSERT_THAT(send(s_, str, sizeof(str), 0), + SyscallSucceedsWithValue(sizeof(str))); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, sizeof(str)); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, sizeof(str)); +} + +TEST_P(UdpSocketTest, Fionread) { + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Check that the bound socket with an empty buffer reports an empty first + // packet. + int n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // Send 3 packets from t_ to s_. + constexpr int psize = 100; + char buf[3 * psize]; + RandomizeBuffer(buf, sizeof(buf)); + + for (int i = 0; i < 3; ++i) { + ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(psize)); + + // Check that regardless of how many packets are in the queue, the size + // reported is that of a single packet. + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, psize); + } +} + +TEST_P(UdpSocketTest, FIONREADZeroLengthPacket) { + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // Check that the bound socket with an empty buffer reports an empty first + // packet. + int n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // Send 3 packets from t_ to s_. + constexpr int psize = 100; + char buf[3 * psize]; + RandomizeBuffer(buf, sizeof(buf)); + + for (int i = 0; i < 3; ++i) { + ASSERT_THAT(sendto(t_, buf + i * psize, 0, 0, addr_[0], addrlen_), + SyscallSucceedsWithValue(0)); + + // Check that regardless of how many packets are in the queue, the size + // reported is that of a single packet. + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + } +} + +TEST_P(UdpSocketTest, FIONREADZeroLengthWriteShutdown) { + int n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // Bind s_ to loopback:TestPort. + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + + // A UDP socket must be connected before it can be shutdown. + ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + const char str[] = "abc"; + ASSERT_THAT(send(s_, str, 0, 0), SyscallSucceedsWithValue(0)); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); +} + +TEST_P(UdpSocketTest, SoTimestampOffByDefault) { + // TODO(gvisor.dev/issue/1202): SO_TIMESTAMP socket option not supported by + // hostinet. + SKIP_IF(IsRunningWithHostinet()); + + int v = -1; + socklen_t optlen = sizeof(v); + ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, &optlen), + SyscallSucceeds()); + ASSERT_EQ(v, kSockOptOff); + ASSERT_EQ(optlen, sizeof(v)); +} + +TEST_P(UdpSocketTest, SoTimestamp) { + // TODO(gvisor.dev/issue/1202): ioctl() and SO_TIMESTAMP socket option are not + // supported by hostinet. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + int v = 1; + ASSERT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), + SyscallSucceeds()); + + char buf[3]; + // Send zero length packet from t_ to s_. + ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); + + char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; + msghdr msg; + memset(&msg, 0, sizeof(msg)); + iovec iov; + memset(&iov, 0, sizeof(iov)); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = cmsgbuf; + msg.msg_controllen = sizeof(cmsgbuf); + + ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); + + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + ASSERT_NE(cmsg, nullptr); + ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); + ASSERT_EQ(cmsg->cmsg_type, SO_TIMESTAMP); + ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct timeval))); + + struct timeval tv = {}; + memcpy(&tv, CMSG_DATA(cmsg), sizeof(struct timeval)); + + ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); + + // There should be nothing to get via ioctl. + ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); +} + +TEST_P(UdpSocketTest, WriteShutdownNotConnected) { + EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, TimestampIoctl) { + // TODO(gvisor.dev/issue/1202): ioctl() is not supported by hostinet. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + char buf[3]; + // Send packet from t_ to s_. + ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + + // There should be no control messages. + char recv_buf[sizeof(buf)]; + ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); + + // A nonzero timeval should be available via ioctl. + struct timeval tv = {}; + ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); + ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); +} + +TEST_P(UdpSocketTest, TimestampIoctlNothingRead) { + // TODO(gvisor.dev/issue/1202): ioctl() is not supported by hostinet. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + struct timeval tv = {}; + ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); +} + +// Test that the timestamp accessed via SIOCGSTAMP is still accessible after +// SO_TIMESTAMP is enabled and used to retrieve a timestamp. +TEST_P(UdpSocketTest, TimestampIoctlPersistence) { + // TODO(gvisor.dev/issue/1202): ioctl() and SO_TIMESTAMP socket option are not + // supported by hostinet. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + char buf[3]; + // Send packet from t_ to s_. + ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); + + // There should be no control messages. + char recv_buf[sizeof(buf)]; + ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); + + // A nonzero timeval should be available via ioctl. + struct timeval tv = {}; + ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); + ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); + + // Enable SO_TIMESTAMP and send a message. + int v = 1; + EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), + SyscallSucceeds()); + ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); + + // There should be a message for SO_TIMESTAMP. + char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; + msghdr msg = {}; + iovec iov = {}; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = cmsgbuf; + msg.msg_controllen = sizeof(cmsgbuf); + ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + ASSERT_NE(cmsg, nullptr); + + // The ioctl should return the exact same values as before. + struct timeval tv2 = {}; + ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv2), SyscallSucceeds()); + ASSERT_EQ(tv.tv_sec, tv2.tv_sec); + ASSERT_EQ(tv.tv_usec, tv2.tv_usec); +} + +// Test that a socket with IP_TOS or IPV6_TCLASS set will set the TOS byte on +// outgoing packets, and that a receiving socket with IP_RECVTOS or +// IPV6_RECVTCLASS will create the corresponding control message. +TEST_P(UdpSocketTest, SetAndReceiveTOS) { + // TODO(b/68320120): IP_RECVTOS/IPV6_RECVTCLASS not supported for netstack. + SKIP_IF(IsRunningOnGvisor() && !IsRunningWithHostinet()); + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + // Allow socket to receive control message. + int recv_level = SOL_IP; + int recv_type = IP_RECVTOS; + if (GetParam() != AddressFamily::kIpv4) { + recv_level = SOL_IPV6; + recv_type = IPV6_RECVTCLASS; + } + ASSERT_THAT( + setsockopt(s_, recv_level, recv_type, &kSockOptOn, sizeof(kSockOptOn)), + SyscallSucceeds()); + + // Set socket TOS. + int sent_level = recv_level; + int sent_type = IP_TOS; + if (sent_level == SOL_IPV6) { + sent_type = IPV6_TCLASS; + } + int sent_tos = IPTOS_LOWDELAY; // Choose some TOS value. + ASSERT_THAT( + setsockopt(t_, sent_level, sent_type, &sent_tos, sizeof(sent_tos)), + SyscallSucceeds()); + + // Prepare message to send. + constexpr size_t kDataLength = 1024; + struct msghdr sent_msg = {}; + struct iovec sent_iov = {}; + char sent_data[kDataLength]; + sent_iov.iov_base = &sent_data[0]; + sent_iov.iov_len = kDataLength; + sent_msg.msg_iov = &sent_iov; + sent_msg.msg_iovlen = 1; + + ASSERT_THAT(RetryEINTR(sendmsg)(t_, &sent_msg, 0), + SyscallSucceedsWithValue(kDataLength)); + + // Receive message. + struct msghdr received_msg = {}; + struct iovec received_iov = {}; + char received_data[kDataLength]; + received_iov.iov_base = &received_data[0]; + received_iov.iov_len = kDataLength; + received_msg.msg_iov = &received_iov; + received_msg.msg_iovlen = 1; + size_t cmsg_data_len = sizeof(int8_t); + if (sent_type == IPV6_TCLASS) { + cmsg_data_len = sizeof(int); + } + std::vector<char> received_cmsgbuf(CMSG_SPACE(cmsg_data_len)); + received_msg.msg_control = &received_cmsgbuf[0]; + received_msg.msg_controllen = received_cmsgbuf.size(); + ASSERT_THAT(RetryEINTR(recvmsg)(s_, &received_msg, 0), + SyscallSucceedsWithValue(kDataLength)); + + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&received_msg); + ASSERT_NE(cmsg, nullptr); + EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(cmsg_data_len)); + EXPECT_EQ(cmsg->cmsg_level, sent_level); + EXPECT_EQ(cmsg->cmsg_type, sent_type); + int8_t received_tos = 0; + memcpy(&received_tos, CMSG_DATA(cmsg), sizeof(received_tos)); + EXPECT_EQ(received_tos, sent_tos); +} + +// Test that sendmsg with IP_TOS and IPV6_TCLASS control messages will set the +// TOS byte on outgoing packets, and that a receiving socket with IP_RECVTOS or +// IPV6_RECVTCLASS will create the corresponding control message. +TEST_P(UdpSocketTest, SendAndReceiveTOS) { + // TODO(b/68320120): IP_RECVTOS/IPV6_RECVTCLASS not supported for netstack. + SKIP_IF(IsRunningOnGvisor() && !IsRunningWithHostinet()); + ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); + + // Allow socket to receive control message. + int recv_level = SOL_IP; + int recv_type = IP_RECVTOS; + if (GetParam() != AddressFamily::kIpv4) { + recv_level = SOL_IPV6; + recv_type = IPV6_RECVTCLASS; + } + int recv_opt = kSockOptOn; + ASSERT_THAT( + setsockopt(s_, recv_level, recv_type, &recv_opt, sizeof(recv_opt)), + SyscallSucceeds()); + + // Prepare message to send. + constexpr size_t kDataLength = 1024; + int sent_level = recv_level; + int sent_type = IP_TOS; + int sent_tos = IPTOS_LOWDELAY; // Choose some TOS value. + + struct msghdr sent_msg = {}; + struct iovec sent_iov = {}; + char sent_data[kDataLength]; + sent_iov.iov_base = &sent_data[0]; + sent_iov.iov_len = kDataLength; + sent_msg.msg_iov = &sent_iov; + sent_msg.msg_iovlen = 1; + size_t cmsg_data_len = sizeof(int8_t); + if (sent_level == SOL_IPV6) { + sent_type = IPV6_TCLASS; + cmsg_data_len = sizeof(int); + } + std::vector<char> sent_cmsgbuf(CMSG_SPACE(cmsg_data_len)); + sent_msg.msg_control = &sent_cmsgbuf[0]; + sent_msg.msg_controllen = CMSG_LEN(cmsg_data_len); + + // Manually add control message. + struct cmsghdr* sent_cmsg = CMSG_FIRSTHDR(&sent_msg); + sent_cmsg->cmsg_len = CMSG_LEN(cmsg_data_len); + sent_cmsg->cmsg_level = sent_level; + sent_cmsg->cmsg_type = sent_type; + *(int8_t*)CMSG_DATA(sent_cmsg) = sent_tos; + + ASSERT_THAT(RetryEINTR(sendmsg)(t_, &sent_msg, 0), + SyscallSucceedsWithValue(kDataLength)); + + // Receive message. + struct msghdr received_msg = {}; + struct iovec received_iov = {}; + char received_data[kDataLength]; + received_iov.iov_base = &received_data[0]; + received_iov.iov_len = kDataLength; + received_msg.msg_iov = &received_iov; + received_msg.msg_iovlen = 1; + std::vector<char> received_cmsgbuf(CMSG_SPACE(cmsg_data_len)); + received_msg.msg_control = &received_cmsgbuf[0]; + received_msg.msg_controllen = CMSG_LEN(cmsg_data_len); + ASSERT_THAT(RetryEINTR(recvmsg)(s_, &received_msg, 0), + SyscallSucceedsWithValue(kDataLength)); + + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&received_msg); + ASSERT_NE(cmsg, nullptr); + EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(cmsg_data_len)); + EXPECT_EQ(cmsg->cmsg_level, sent_level); + EXPECT_EQ(cmsg->cmsg_type, sent_type); + int8_t received_tos = 0; + memcpy(&received_tos, CMSG_DATA(cmsg), sizeof(received_tos)); + EXPECT_EQ(received_tos, sent_tos); +} + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/udp_socket_test_cases.h b/test/syscalls/linux/udp_socket_test_cases.h new file mode 100644 index 000000000..2fd79d99e --- /dev/null +++ b/test/syscalls/linux/udp_socket_test_cases.h @@ -0,0 +1,74 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ +#define THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ + +#include "gtest/gtest.h" +#include "test/syscalls/linux/socket_test_util.h" + +namespace gvisor { +namespace testing { + +// The initial port to be be used on gvisor. +constexpr int TestPort = 40000; + +// Fixture for tests parameterized by the address family to use (AF_INET and +// AF_INET6) when creating sockets. +class UdpSocketTest + : public ::testing::TestWithParam<gvisor::testing::AddressFamily> { + protected: + // Creates two sockets that will be used by test cases. + void SetUp() override; + + // Closes the sockets created by SetUp(). + void TearDown() override { + EXPECT_THAT(close(s_), SyscallSucceeds()); + EXPECT_THAT(close(t_), SyscallSucceeds()); + + for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { + ASSERT_NO_ERRNO(FreeAvailablePort(ports_[i])); + } + } + + // First UDP socket. + int s_; + + // Second UDP socket. + int t_; + + // The length of the socket address. + socklen_t addrlen_; + + // Initialized address pointing to loopback and port TestPort+i. + struct sockaddr* addr_[3]; + + // Initialize "any" address. + struct sockaddr* anyaddr_; + + // Used ports. + int ports_[3]; + + private: + // Storage for the loopback addresses. + struct sockaddr_storage addr_storage_[3]; + + // Storage for the "any" address. + struct sockaddr_storage anyaddr_storage_; +}; + +} // namespace testing +} // namespace gvisor + +#endif // THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ diff --git a/test/syscalls/linux/unix_domain_socket_test_util.cc b/test/syscalls/linux/unix_domain_socket_test_util.cc index 7fb9eed8d..b05ab2900 100644 --- a/test/syscalls/linux/unix_domain_socket_test_util.cc +++ b/test/syscalls/linux/unix_domain_socket_test_util.cc @@ -15,6 +15,7 @@ #include "test/syscalls/linux/unix_domain_socket_test_util.h" #include <sys/un.h> + #include <vector> #include "gtest/gtest.h" diff --git a/test/syscalls/linux/unix_domain_socket_test_util.h b/test/syscalls/linux/unix_domain_socket_test_util.h index 5eca0b7f0..b8073db17 100644 --- a/test/syscalls/linux/unix_domain_socket_test_util.h +++ b/test/syscalls/linux/unix_domain_socket_test_util.h @@ -16,6 +16,7 @@ #define GVISOR_TEST_SYSCALLS_UNIX_DOMAIN_SOCKET_TEST_UTIL_H_ #include <string> + #include "test/syscalls/linux/socket_test_util.h" namespace gvisor { diff --git a/test/syscalls/linux/utimes.cc b/test/syscalls/linux/utimes.cc index 80716859a..12b925a51 100644 --- a/test/syscalls/linux/utimes.cc +++ b/test/syscalls/linux/utimes.cc @@ -20,6 +20,7 @@ #include <time.h> #include <unistd.h> #include <utime.h> + #include <string> #include "absl/time/time.h" diff --git a/test/syscalls/linux/vdso_clock_gettime.cc b/test/syscalls/linux/vdso_clock_gettime.cc index 40c0014b9..ce1899f45 100644 --- a/test/syscalls/linux/vdso_clock_gettime.cc +++ b/test/syscalls/linux/vdso_clock_gettime.cc @@ -17,6 +17,7 @@ #include <syscall.h> #include <time.h> #include <unistd.h> + #include <map> #include <string> #include <utility> diff --git a/test/syscalls/linux/xattr.cc b/test/syscalls/linux/xattr.cc new file mode 100644 index 000000000..75740238c --- /dev/null +++ b/test/syscalls/linux/xattr.cc @@ -0,0 +1,488 @@ +// Copyright 2019 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <sys/types.h> +#include <sys/xattr.h> +#include <unistd.h> + +#include <string> +#include <vector> + +#include "gmock/gmock.h" +#include "gtest/gtest.h" +#include "test/syscalls/linux/file_base.h" +#include "test/util/capability_util.h" +#include "test/util/posix_error.h" +#include "test/util/temp_path.h" +#include "test/util/test_util.h" + +namespace gvisor { +namespace testing { + +namespace { + +class XattrTest : public FileTest {}; + +TEST_F(XattrTest, XattrNullName) { + const char* path = test_file_name_.c_str(); + + EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, /*flags=*/0), + SyscallFailsWithErrno(EFAULT)); + EXPECT_THAT(getxattr(path, nullptr, nullptr, 0), + SyscallFailsWithErrno(EFAULT)); +} + +TEST_F(XattrTest, XattrEmptyName) { + const char* path = test_file_name_.c_str(); + + EXPECT_THAT(setxattr(path, "", nullptr, 0, /*flags=*/0), + SyscallFailsWithErrno(ERANGE)); + EXPECT_THAT(getxattr(path, "", nullptr, 0), SyscallFailsWithErrno(ERANGE)); +} + +TEST_F(XattrTest, XattrLargeName) { + const char* path = test_file_name_.c_str(); + std::string name = "user."; + name += std::string(XATTR_NAME_MAX - name.length(), 'a'); + + // TODO(b/127675828): Support setxattr and getxattr. + if (!IsRunningOnGvisor()) { + EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), + SyscallSucceeds()); + EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), + SyscallSucceedsWithValue(0)); + } + + name += "a"; + EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), + SyscallFailsWithErrno(ERANGE)); + EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), + SyscallFailsWithErrno(ERANGE)); +} + +TEST_F(XattrTest, XattrInvalidPrefix) { + const char* path = test_file_name_.c_str(); + std::string name(XATTR_NAME_MAX, 'a'); + EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), + SyscallFailsWithErrno(EOPNOTSUPP)); + EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), + SyscallFailsWithErrno(EOPNOTSUPP)); +} + +TEST_F(XattrTest, XattrReadOnly) { + // Drop capabilities that allow us to override file and directory permissions. + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + size_t size = sizeof(val); + + // TODO(b/127675828): Support setxattr and getxattr. + if (!IsRunningOnGvisor()) { + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), + SyscallSucceeds()); + } + + ASSERT_NO_ERRNO(testing::Chmod(test_file_name_, S_IRUSR)); + + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), + SyscallFailsWithErrno(EACCES)); + + // TODO(b/127675828): Support setxattr and getxattr. + if (!IsRunningOnGvisor()) { + char buf = '-'; + EXPECT_THAT(getxattr(path, name, &buf, size), + SyscallSucceedsWithValue(size)); + EXPECT_EQ(buf, val); + } +} + +TEST_F(XattrTest, XattrWriteOnly) { + // Drop capabilities that allow us to override file and directory permissions. + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); + + ASSERT_NO_ERRNO(testing::Chmod(test_file_name_, S_IWUSR)); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + size_t size = sizeof(val); + + // TODO(b/127675828): Support setxattr and getxattr. + if (!IsRunningOnGvisor()) { + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), + SyscallSucceeds()); + } + + EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(EACCES)); +} + +TEST_F(XattrTest, XattrTrustedWithNonadmin) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + SKIP_IF(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); + + const char* path = test_file_name_.c_str(); + const char name[] = "trusted.abc"; + EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), + SyscallFailsWithErrno(EPERM)); + EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); +} + +TEST_F(XattrTest, XattrOnDirectory) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + char name[] = "user.abc"; + EXPECT_THAT(setxattr(dir.path().c_str(), name, NULL, 0, /*flags=*/0), + SyscallSucceeds()); + EXPECT_THAT(getxattr(dir.path().c_str(), name, NULL, 0), + SyscallSucceedsWithValue(0)); +} + +TEST_F(XattrTest, XattrOnSymlink) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + TempPath link = ASSERT_NO_ERRNO_AND_VALUE( + TempPath::CreateSymlinkTo(dir.path(), test_file_name_)); + char name[] = "user.abc"; + EXPECT_THAT(setxattr(link.path().c_str(), name, NULL, 0, /*flags=*/0), + SyscallSucceeds()); + EXPECT_THAT(getxattr(link.path().c_str(), name, NULL, 0), + SyscallSucceedsWithValue(0)); +} + +TEST_F(XattrTest, XattrOnInvalidFileTypes) { + char name[] = "user.abc"; + + char char_device[] = "/dev/zero"; + EXPECT_THAT(setxattr(char_device, name, NULL, 0, /*flags=*/0), + SyscallFailsWithErrno(EPERM)); + EXPECT_THAT(getxattr(char_device, name, NULL, 0), + SyscallFailsWithErrno(ENODATA)); + + // Use tmpfs, where creation of named pipes is supported. + const std::string fifo = NewTempAbsPathInDir("/dev/shm"); + const char* path = fifo.c_str(); + EXPECT_THAT(mknod(path, S_IFIFO | S_IRUSR | S_IWUSR, 0), SyscallSucceeds()); + EXPECT_THAT(setxattr(path, name, NULL, 0, /*flags=*/0), + SyscallFailsWithErrno(EPERM)); + EXPECT_THAT(getxattr(path, name, NULL, 0), SyscallFailsWithErrno(ENODATA)); +} + +TEST_F(XattrTest, SetxattrSizeSmallerThanValue) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + std::vector<char> val = {'a', 'a'}; + size_t size = 1; + EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0), + SyscallSucceeds()); + + std::vector<char> buf = {'-', '-'}; + std::vector<char> expected_buf = {'a', '-'}; + EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()), + SyscallSucceedsWithValue(size)); + EXPECT_EQ(buf, expected_buf); +} + +TEST_F(XattrTest, SetxattrZeroSize) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + EXPECT_THAT(setxattr(path, name, &val, 0, /*flags=*/0), SyscallSucceeds()); + + char buf = '-'; + EXPECT_THAT(getxattr(path, name, &buf, XATTR_SIZE_MAX), + SyscallSucceedsWithValue(0)); + EXPECT_EQ(buf, '-'); +} + +TEST_F(XattrTest, SetxattrSizeTooLarge) { + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + + // Note that each particular fs implementation may stipulate a lower size + // limit, in which case we actually may fail (e.g. error with ENOSPC) for + // some sizes under XATTR_SIZE_MAX. + size_t size = XATTR_SIZE_MAX + 1; + std::vector<char> val(size); + EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0), + SyscallFailsWithErrno(E2BIG)); + + // TODO(b/127675828): Support setxattr and getxattr. + if (!IsRunningOnGvisor()) { + EXPECT_THAT(getxattr(path, name, nullptr, 0), + SyscallFailsWithErrno(ENODATA)); + } +} + +TEST_F(XattrTest, SetxattrNullValueAndNonzeroSize) { + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + EXPECT_THAT(setxattr(path, name, nullptr, 1, /*flags=*/0), + SyscallFailsWithErrno(EFAULT)); + + // TODO(b/127675828): Support setxattr and getxattr. + if (!IsRunningOnGvisor()) { + EXPECT_THAT(getxattr(path, name, nullptr, 0), + SyscallFailsWithErrno(ENODATA)); + } +} + +TEST_F(XattrTest, SetxattrNullValueAndZeroSize) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); + + EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0)); +} + +TEST_F(XattrTest, SetxattrValueTooLargeButOKSize) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + std::vector<char> val(XATTR_SIZE_MAX + 1); + std::fill(val.begin(), val.end(), 'a'); + size_t size = 1; + EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0), + SyscallSucceeds()); + + std::vector<char> buf = {'-', '-'}; + std::vector<char> expected_buf = {'a', '-'}; + EXPECT_THAT(getxattr(path, name, buf.data(), size), + SyscallSucceedsWithValue(size)); + EXPECT_EQ(buf, expected_buf); +} + +TEST_F(XattrTest, SetxattrReplaceWithSmaller) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + std::vector<char> val = {'a', 'a'}; + EXPECT_THAT(setxattr(path, name, val.data(), 2, /*flags=*/0), + SyscallSucceeds()); + EXPECT_THAT(setxattr(path, name, val.data(), 1, /*flags=*/0), + SyscallSucceeds()); + + std::vector<char> buf = {'-', '-'}; + std::vector<char> expected_buf = {'a', '-'}; + EXPECT_THAT(getxattr(path, name, buf.data(), 2), SyscallSucceedsWithValue(1)); + EXPECT_EQ(buf, expected_buf); +} + +TEST_F(XattrTest, SetxattrReplaceWithLarger) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + std::vector<char> val = {'a', 'a'}; + EXPECT_THAT(setxattr(path, name, val.data(), 1, /*flags=*/0), + SyscallSucceeds()); + EXPECT_THAT(setxattr(path, name, val.data(), 2, /*flags=*/0), + SyscallSucceeds()); + + std::vector<char> buf = {'-', '-'}; + EXPECT_THAT(getxattr(path, name, buf.data(), 2), SyscallSucceedsWithValue(2)); + EXPECT_EQ(buf, val); +} + +TEST_F(XattrTest, SetxattrCreateFlag) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_CREATE), + SyscallSucceeds()); + EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_CREATE), + SyscallFailsWithErrno(EEXIST)); + + EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0)); +} + +TEST_F(XattrTest, SetxattrReplaceFlag) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_REPLACE), + SyscallFailsWithErrno(ENODATA)); + EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); + EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_REPLACE), + SyscallSucceeds()); + + EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0)); +} + +TEST_F(XattrTest, SetxattrInvalidFlags) { + const char* path = test_file_name_.c_str(); + int invalid_flags = 0xff; + EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, invalid_flags), + SyscallFailsWithErrno(EINVAL)); +} + +TEST_F(XattrTest, Getxattr) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + int val = 1234; + size_t size = sizeof(val); + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); + + int buf = 0; + EXPECT_THAT(getxattr(path, name, &buf, size), SyscallSucceedsWithValue(size)); + EXPECT_EQ(buf, val); +} + +TEST_F(XattrTest, GetxattrSizeSmallerThanValue) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + std::vector<char> val = {'a', 'a'}; + size_t size = val.size(); + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); + + char buf = '-'; + EXPECT_THAT(getxattr(path, name, &buf, 1), SyscallFailsWithErrno(ERANGE)); + EXPECT_EQ(buf, '-'); +} + +TEST_F(XattrTest, GetxattrSizeLargerThanValue) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + EXPECT_THAT(setxattr(path, name, &val, 1, /*flags=*/0), SyscallSucceeds()); + + std::vector<char> buf(XATTR_SIZE_MAX); + std::fill(buf.begin(), buf.end(), '-'); + std::vector<char> expected_buf = buf; + expected_buf[0] = 'a'; + EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()), + SyscallSucceedsWithValue(1)); + EXPECT_EQ(buf, expected_buf); +} + +TEST_F(XattrTest, GetxattrZeroSize) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + EXPECT_THAT(setxattr(path, name, &val, sizeof(val), /*flags=*/0), + SyscallSucceeds()); + + char buf = '-'; + EXPECT_THAT(getxattr(path, name, &buf, 0), + SyscallSucceedsWithValue(sizeof(val))); + EXPECT_EQ(buf, '-'); +} + +TEST_F(XattrTest, GetxattrSizeTooLarge) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + EXPECT_THAT(setxattr(path, name, &val, sizeof(val), /*flags=*/0), + SyscallSucceeds()); + + std::vector<char> buf(XATTR_SIZE_MAX + 1); + std::fill(buf.begin(), buf.end(), '-'); + std::vector<char> expected_buf = buf; + expected_buf[0] = 'a'; + EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()), + SyscallSucceedsWithValue(sizeof(val))); + EXPECT_EQ(buf, expected_buf); +} + +TEST_F(XattrTest, GetxattrNullValue) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + size_t size = sizeof(val); + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); + + EXPECT_THAT(getxattr(path, name, nullptr, size), + SyscallFailsWithErrno(EFAULT)); +} + +TEST_F(XattrTest, GetxattrNullValueAndZeroSize) { + // TODO(b/127675828): Support setxattr and getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + char name[] = "user.abc"; + char val = 'a'; + size_t size = sizeof(val); + // Set value with zero size. + EXPECT_THAT(setxattr(path, name, &val, 0, /*flags=*/0), SyscallSucceeds()); + // Get value with nonzero size. + EXPECT_THAT(getxattr(path, name, nullptr, size), SyscallSucceedsWithValue(0)); + + // Set value with nonzero size. + EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); + // Get value with zero size. + EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(size)); +} + +TEST_F(XattrTest, GetxattrNonexistentName) { + // TODO(b/127675828): Support getxattr. + SKIP_IF(IsRunningOnGvisor()); + + const char* path = test_file_name_.c_str(); + std::string name = "user.nonexistent"; + EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), + SyscallFailsWithErrno(ENODATA)); +} + +} // namespace + +} // namespace testing +} // namespace gvisor |