From bdabd100d340d9ff88e65f31930e1f31800811f5 Mon Sep 17 00:00:00 2001 From: Tamir Duberstein Date: Mon, 31 Aug 2020 13:08:49 -0700 Subject: Remove __fuchsia__ defines These mostly guard linux-only headers; check for linux instead. PiperOrigin-RevId: 329362762 --- test/syscalls/linux/BUILD | 23 +- test/syscalls/linux/packet_socket_raw.cc | 6 - test/syscalls/linux/raw_socket.cc | 6 - test/syscalls/linux/tcp_socket.cc | 10 +- test/syscalls/linux/udp_socket.cc | 1828 +++++++++++++++++++- .../linux/udp_socket_errqueue_test_case.cc | 57 - test/syscalls/linux/udp_socket_test_cases.cc | 1781 ------------------- test/syscalls/linux/udp_socket_test_cases.h | 82 - 8 files changed, 1837 insertions(+), 1956 deletions(-) delete mode 100644 test/syscalls/linux/udp_socket_errqueue_test_case.cc delete mode 100644 test/syscalls/linux/udp_socket_test_cases.cc delete mode 100644 test/syscalls/linux/udp_socket_test_cases.h (limited to 'test/syscalls/linux') diff --git a/test/syscalls/linux/BUILD b/test/syscalls/linux/BUILD index fad3be7bf..de753fc4e 100644 --- a/test/syscalls/linux/BUILD +++ b/test/syscalls/linux/BUILD @@ -22,6 +22,7 @@ exports_files( "socket_ipv4_tcp_unbound_external_networking_test.cc", "socket_ipv4_udp_unbound_external_networking_test.cc", "socket_ipv4_udp_unbound_loopback.cc", + "socket_ipv4_udp_unbound_loopback_nogotsan.cc", "tcp_socket.cc", "udp_bind.cc", "udp_socket.cc", @@ -3666,15 +3667,12 @@ cc_binary( ], ) -cc_library( - name = "udp_socket_test_cases", +cc_binary( + name = "udp_socket_test", testonly = 1, - srcs = [ - "udp_socket_errqueue_test_case.cc", - "udp_socket_test_cases.cc", - ], - hdrs = ["udp_socket_test_cases.h"], + srcs = ["udp_socket.cc"], defines = select_system(), + linkstatic = 1, deps = [ ":ip_socket_test_util", ":socket_test_util", @@ -3689,17 +3687,6 @@ cc_library( "//test/util:test_util", "//test/util:thread_util", ], - alwayslink = 1, -) - -cc_binary( - name = "udp_socket_test", - testonly = 1, - srcs = ["udp_socket.cc"], - linkstatic = 1, - deps = [ - ":udp_socket_test_cases", - ], ) cc_binary( diff --git a/test/syscalls/linux/packet_socket_raw.cc b/test/syscalls/linux/packet_socket_raw.cc index a11a03415..f3c1d6bc9 100644 --- a/test/syscalls/linux/packet_socket_raw.cc +++ b/test/syscalls/linux/packet_socket_raw.cc @@ -14,9 +14,7 @@ #include #include -#ifndef __fuchsia__ #include -#endif // __fuchsia__ #include #include #include @@ -618,8 +616,6 @@ TEST_P(RawPacketTest, GetSocketErrorBind) { } } -#ifndef __fuchsia__ - TEST_P(RawPacketTest, SetSocketDetachFilterNoInstalledFilter) { // TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. // @@ -647,8 +643,6 @@ TEST_P(RawPacketTest, GetSocketDetachFilter) { SyscallFailsWithErrno(ENOPROTOOPT)); } -#endif // __fuchsia__ - INSTANTIATE_TEST_SUITE_P(AllInetTests, RawPacketTest, ::testing::Values(ETH_P_IP, ETH_P_ALL)); diff --git a/test/syscalls/linux/raw_socket.cc b/test/syscalls/linux/raw_socket.cc index 8d6e5c913..54709371c 100644 --- a/test/syscalls/linux/raw_socket.cc +++ b/test/syscalls/linux/raw_socket.cc @@ -13,9 +13,7 @@ // limitations under the License. #include -#ifndef __fuchsia__ #include -#endif // __fuchsia__ #include #include #include @@ -815,8 +813,6 @@ void RawSocketTest::ReceiveBufFrom(int sock, char* recv_buf, ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(sock, recv_buf, recv_buf_len)); } -#ifndef __fuchsia__ - TEST_P(RawSocketTest, SetSocketDetachFilterNoInstalledFilter) { // TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. if (IsRunningOnGvisor()) { @@ -838,8 +834,6 @@ TEST_P(RawSocketTest, GetSocketDetachFilter) { SyscallFailsWithErrno(ENOPROTOOPT)); } -#endif // __fuchsia__ - // AF_INET6+SOCK_RAW+IPPROTO_RAW sockets can be created, but not written to. TEST(RawSocketTest, IPv6ProtoRaw) { SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); diff --git a/test/syscalls/linux/tcp_socket.cc b/test/syscalls/linux/tcp_socket.cc index a6325a761..ab731db1d 100644 --- a/test/syscalls/linux/tcp_socket.cc +++ b/test/syscalls/linux/tcp_socket.cc @@ -13,9 +13,9 @@ // limitations under the License. #include -#ifndef __fuchsia__ +#ifdef __linux__ #include -#endif // __fuchsia__ +#endif // __linux__ #include #include #include @@ -1586,7 +1586,7 @@ TEST_P(SimpleTcpSocketTest, SetTCPWindowClampAboveHalfMinRcvBuf) { } } -#ifndef __fuchsia__ +#ifdef __linux__ // TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. // gVisor currently silently ignores attaching a filter. @@ -1620,6 +1620,8 @@ TEST_P(SimpleTcpSocketTest, SetSocketAttachDetachFilter) { SyscallSucceeds()); } +#endif // __linux__ + TEST_P(SimpleTcpSocketTest, SetSocketDetachFilterNoInstalledFilter) { // TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. SKIP_IF(IsRunningOnGvisor()); @@ -1641,8 +1643,6 @@ TEST_P(SimpleTcpSocketTest, GetSocketDetachFilter) { SyscallFailsWithErrno(ENOPROTOOPT)); } -#endif // __fuchsia__ - INSTANTIATE_TEST_SUITE_P(AllInetTests, SimpleTcpSocketTest, ::testing::Values(AF_INET, AF_INET6)); diff --git a/test/syscalls/linux/udp_socket.cc b/test/syscalls/linux/udp_socket.cc index 7a8ac30a4..97db2b321 100644 --- a/test/syscalls/linux/udp_socket.cc +++ b/test/syscalls/linux/udp_socket.cc @@ -12,13 +12,1839 @@ // See the License for the specific language governing permissions and // limitations under the License. -#include "test/syscalls/linux/udp_socket_test_cases.h" +#include +#include +#ifdef __linux__ +#include +#include +#endif // __linux__ +#include +#include +#include +#include +#include + +#include "absl/strings/str_format.h" +#ifndef SIOCGSTAMP +#include +#endif + +#include "gtest/gtest.h" +#include "absl/base/macros.h" +#include "absl/time/clock.h" +#include "absl/time/time.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" +#include "test/util/file_descriptor.h" +#include "test/util/posix_error.h" +#include "test/util/test_util.h" +#include "test/util/thread_util.h" namespace gvisor { namespace testing { namespace { +// Fixture for tests parameterized by the address family to use (AF_INET and +// AF_INET6) when creating sockets. +class UdpSocketTest + : public ::testing::TestWithParam { + protected: + // Creates two sockets that will be used by test cases. + void SetUp() override; + + // Binds the socket bind_ to the loopback and updates bind_addr_. + PosixError BindLoopback(); + + // Binds the socket bind_ to Any and updates bind_addr_. + PosixError BindAny(); + + // Binds given socket to address addr and updates. + PosixError BindSocket(int socket, struct sockaddr* addr); + + // Return initialized Any address to port 0. + struct sockaddr_storage InetAnyAddr(); + + // Return initialized Loopback address to port 0. + struct sockaddr_storage InetLoopbackAddr(); + + // Disconnects socket sockfd. + void Disconnect(int sockfd); + + // Get family for the test. + int GetFamily(); + + // Socket used by Bind methods + FileDescriptor bind_; + + // Second socket used for tests. + FileDescriptor sock_; + + // Address for bind_ socket. + struct sockaddr* bind_addr_; + + // Initialized to the length based on GetFamily(). + socklen_t addrlen_; + + // Storage for bind_addr_. + struct sockaddr_storage bind_addr_storage_; + + private: + // Helper to initialize addrlen_ for the test case. + socklen_t GetAddrLength(); +}; + +// 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(addr); + return &sin->sin_port; + } + case AF_INET6: { + auto sin6 = reinterpret_cast(addr); + return &sin6->sin6_port; + } + } + + return nullptr; +} + +// Sets addr port to "port". +void SetPort(struct sockaddr_storage* addr, uint16_t port) { + switch (addr->ss_family) { + case AF_INET: { + auto sin = reinterpret_cast(addr); + sin->sin_port = port; + break; + } + case AF_INET6: { + auto sin6 = reinterpret_cast(addr); + sin6->sin6_port = port; + break; + } + } +} + +void UdpSocketTest::SetUp() { + addrlen_ = GetAddrLength(); + + bind_ = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); + memset(&bind_addr_storage_, 0, sizeof(bind_addr_storage_)); + bind_addr_ = reinterpret_cast(&bind_addr_storage_); + + sock_ = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); +} + +int UdpSocketTest::GetFamily() { + if (GetParam() == AddressFamily::kIpv4) { + return AF_INET; + } + return AF_INET6; +} + +PosixError UdpSocketTest::BindLoopback() { + bind_addr_storage_ = InetLoopbackAddr(); + struct sockaddr* bind_addr_ = + reinterpret_cast(&bind_addr_storage_); + return BindSocket(bind_.get(), bind_addr_); +} + +PosixError UdpSocketTest::BindAny() { + bind_addr_storage_ = InetAnyAddr(); + struct sockaddr* bind_addr_ = + reinterpret_cast(&bind_addr_storage_); + return BindSocket(bind_.get(), bind_addr_); +} + +PosixError UdpSocketTest::BindSocket(int socket, struct sockaddr* addr) { + socklen_t len = sizeof(bind_addr_storage_); + + // Bind, then check that we get the right address. + RETURN_ERROR_IF_SYSCALL_FAIL(bind(socket, addr, addrlen_)); + + RETURN_ERROR_IF_SYSCALL_FAIL(getsockname(socket, addr, &len)); + + if (addrlen_ != len) { + return PosixError( + EINVAL, + absl::StrFormat("getsockname len: %u expected: %u", len, addrlen_)); + } + return PosixError(0); +} + +socklen_t UdpSocketTest::GetAddrLength() { + struct sockaddr_storage addr; + if (GetFamily() == AF_INET) { + auto sin = reinterpret_cast(&addr); + return sizeof(*sin); + } + + auto sin6 = reinterpret_cast(&addr); + return sizeof(*sin6); +} + +sockaddr_storage UdpSocketTest::InetAnyAddr() { + struct sockaddr_storage addr; + memset(&addr, 0, sizeof(addr)); + reinterpret_cast(&addr)->sa_family = GetFamily(); + + if (GetFamily() == AF_INET) { + auto sin = reinterpret_cast(&addr); + sin->sin_addr.s_addr = htonl(INADDR_ANY); + sin->sin_port = htons(0); + return addr; + } + + auto sin6 = reinterpret_cast(&addr); + sin6->sin6_addr = IN6ADDR_ANY_INIT; + sin6->sin6_port = htons(0); + return addr; +} + +sockaddr_storage UdpSocketTest::InetLoopbackAddr() { + struct sockaddr_storage addr; + memset(&addr, 0, sizeof(addr)); + reinterpret_cast(&addr)->sa_family = GetFamily(); + + if (GetFamily() == AF_INET) { + auto sin = reinterpret_cast(&addr); + sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + sin->sin_port = htons(0); + return addr; + } + auto sin6 = reinterpret_cast(&addr); + sin6->sin6_addr = in6addr_loopback; + sin6->sin6_port = htons(0); + return addr; +} + +void UdpSocketTest::Disconnect(int sockfd) { + sockaddr_storage addr_storage = InetAnyAddr(); + sockaddr* addr = reinterpret_cast(&addr_storage); + socklen_t addrlen = sizeof(addr_storage); + + addr->sa_family = AF_UNSPEC; + ASSERT_THAT(connect(sockfd, addr, addrlen), SyscallSucceeds()); + + // Check that after disconnect the socket is bound to the ANY address. + EXPECT_THAT(getsockname(sockfd, addr, &addrlen), SyscallSucceeds()); + if (GetParam() == AddressFamily::kIpv4) { + auto addr_out = reinterpret_cast(addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); + } else { + auto addr_out = reinterpret_cast(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, Creation) { + FileDescriptor sock = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); + EXPECT_THAT(close(sock.release()), SyscallSucceeds()); + + sock = ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, 0)); + EXPECT_THAT(close(sock.release()), SyscallSucceeds()); + + ASSERT_THAT(socket(GetFamily(), 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(bind_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + struct sockaddr_storage any = InetAnyAddr(); + EXPECT_EQ(memcmp(&addr, reinterpret_cast(&any), addrlen_), + 0); + + ASSERT_NO_ERRNO(BindLoopback()); + + EXPECT_THAT( + getsockname(bind_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, bind_addr_, addrlen_), 0); +} + +TEST_P(UdpSocketTest, Getpeername) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Check that we're not connected. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); + + // Connect, then check that we get the right address. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, bind_addr_, addrlen_), 0); +} + +TEST_P(UdpSocketTest, SendNotConnected) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Do send & write, they must fail. + char buf[512]; + EXPECT_THAT(send(sock_.get(), buf, sizeof(buf), 0), + SyscallFailsWithErrno(EDESTADDRREQ)); + + EXPECT_THAT(write(sock_.get(), buf, sizeof(buf)), + SyscallFailsWithErrno(EDESTADDRREQ)); + + // Use sendto. + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Check that we're bound now. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_NE(*Port(&addr), 0); +} + +TEST_P(UdpSocketTest, ConnectBinds) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect the socket. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Check that we're bound now. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_NE(*Port(&addr), 0); +} + +TEST_P(UdpSocketTest, ReceiveNotBound) { + char buf[512]; + EXPECT_THAT(recv(sock_.get(), buf, sizeof(buf), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, Bind) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Try to bind again. + EXPECT_THAT(bind(bind_.get(), bind_addr_, 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(bind_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, bind_addr_, addrlen_), 0); +} + +TEST_P(UdpSocketTest, BindInUse) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Try to bind again. + EXPECT_THAT(bind(sock_.get(), bind_addr_, addrlen_), + SyscallFailsWithErrno(EADDRINUSE)); +} + +TEST_P(UdpSocketTest, ReceiveAfterConnect) { + ASSERT_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Send from sock_ to bind_ + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(bind_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, ReceiveAfterDisconnect) { + ASSERT_NO_ERRNO(BindLoopback()); + + for (int i = 0; i < 2; i++) { + // Connet sock_ to bound address. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + + // Send from sock to bind_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(bind_.get(), buf, sizeof(buf), 0, + reinterpret_cast(&addr), addrlen), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(sock_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); + + // Disconnect sock_. + struct sockaddr unspec = {}; + unspec.sa_family = AF_UNSPEC; + ASSERT_THAT(connect(sock_.get(), &unspec, sizeof(unspec.sa_family)), + SyscallSucceeds()); + } +} + +TEST_P(UdpSocketTest, Connect) { + ASSERT_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Check that we're connected to the right peer. + struct sockaddr_storage peer; + socklen_t peerlen = sizeof(peer); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), + SyscallSucceeds()); + EXPECT_EQ(peerlen, addrlen_); + EXPECT_EQ(memcmp(&peer, bind_addr_, addrlen_), 0); + + // Try to bind after connect. + struct sockaddr_storage any = InetAnyAddr(); + EXPECT_THAT( + bind(sock_.get(), reinterpret_cast(&any), addrlen_), + SyscallFailsWithErrno(EINVAL)); + + struct sockaddr_storage bind2_storage = InetLoopbackAddr(); + struct sockaddr* bind2_addr = + reinterpret_cast(&bind2_storage); + FileDescriptor bind2 = + ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); + ASSERT_NO_ERRNO(BindSocket(bind2.get(), bind2_addr)); + + // Try to connect again. + EXPECT_THAT(connect(sock_.get(), bind2_addr, addrlen_), SyscallSucceeds()); + + // Check that peer name changed. + peerlen = sizeof(peer); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), + SyscallSucceeds()); + EXPECT_EQ(peerlen, addrlen_); + EXPECT_EQ(memcmp(&peer, bind2_addr, addrlen_), 0); +} + +TEST_P(UdpSocketTest, ConnectAnyZero) { + // TODO(138658473): Enable when we can connect to port 0 with gVisor. + SKIP_IF(IsRunningOnGvisor()); + + struct sockaddr_storage any = InetAnyAddr(); + EXPECT_THAT( + connect(sock_.get(), reinterpret_cast(&any), addrlen_), + SyscallSucceeds()); + + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, ConnectAnyWithPort) { + ASSERT_NO_ERRNO(BindAny()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); +} + +TEST_P(UdpSocketTest, DisconnectAfterConnectAny) { + // TODO(138658473): Enable when we can connect to port 0 with gVisor. + SKIP_IF(IsRunningOnGvisor()); + struct sockaddr_storage any = InetAnyAddr(); + EXPECT_THAT( + connect(sock_.get(), reinterpret_cast(&any), addrlen_), + SyscallSucceeds()); + + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); + + Disconnect(sock_.get()); +} + +TEST_P(UdpSocketTest, DisconnectAfterConnectAnyWithPort) { + ASSERT_NO_ERRNO(BindAny()); + EXPECT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(*Port(&bind_addr_storage_), *Port(&addr)); + + Disconnect(sock_.get()); +} + +TEST_P(UdpSocketTest, DisconnectAfterBind) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Bind to the next port above bind_. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_NO_ERRNO(BindSocket(sock_.get(), addr)); + + // Connect the socket. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + struct sockaddr_storage unspec = {}; + unspec.ss_family = AF_UNSPEC; + EXPECT_THAT(connect(sock_.get(), reinterpret_cast(&unspec), + sizeof(unspec.ss_family)), + SyscallSucceeds()); + + // Check that we're still bound. + socklen_t addrlen = sizeof(unspec); + EXPECT_THAT( + getsockname(sock_.get(), reinterpret_cast(&unspec), &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(addr, &unspec, addrlen_), 0); + + addrlen = sizeof(addr); + EXPECT_THAT(getpeername(sock_.get(), addr, &addrlen), + SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, BindToAnyConnnectToLocalhost) { + ASSERT_NO_ERRNO(BindAny()); + + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + socklen_t addrlen = sizeof(addr); + + // Connect the socket. + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + EXPECT_THAT(getsockname(bind_.get(), 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(addr); + EXPECT_EQ(addrlen, sizeof(*addr_out)); + EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); + } else { + auto addr_out = reinterpret_cast(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) { + ASSERT_NO_ERRNO(BindLoopback()); + + struct sockaddr_storage any_storage = InetAnyAddr(); + struct sockaddr* any = reinterpret_cast(&any_storage); + SetPort(&any_storage, *Port(&bind_addr_storage_) + 1); + + ASSERT_NO_ERRNO(BindSocket(sock_.get(), any)); + + // Connect the socket. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + Disconnect(sock_.get()); + + // Check that we're still bound. + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(memcmp(&addr, any, addrlen), 0); + + addrlen = sizeof(addr); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, Disconnect) { + ASSERT_NO_ERRNO(BindLoopback()); + + struct sockaddr_storage any_storage = InetAnyAddr(); + struct sockaddr* any = reinterpret_cast(&any_storage); + SetPort(&any_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_NO_ERRNO(BindSocket(sock_.get(), any)); + + for (int i = 0; i < 2; i++) { + // Try to connect again. + EXPECT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Check that we're connected to the right peer. + struct sockaddr_storage peer; + socklen_t peerlen = sizeof(peer); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), + SyscallSucceeds()); + EXPECT_EQ(peerlen, addrlen_); + EXPECT_EQ(memcmp(&peer, bind_addr_, addrlen_), 0); + + // Try to disconnect. + struct sockaddr_storage addr = {}; + addr.ss_family = AF_UNSPEC; + EXPECT_THAT(connect(sock_.get(), reinterpret_cast(&addr), + sizeof(addr.ss_family)), + SyscallSucceeds()); + + peerlen = sizeof(peer); + EXPECT_THAT( + getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), + SyscallFailsWithErrno(ENOTCONN)); + + // Check that we're still bound. + socklen_t addrlen = sizeof(addr); + EXPECT_THAT( + getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), + SyscallSucceeds()); + EXPECT_EQ(addrlen, addrlen_); + EXPECT_EQ(*Port(&addr), *Port(&any_storage)); + } +} + +TEST_P(UdpSocketTest, ConnectBadAddress) { + struct sockaddr addr = {}; + addr.sa_family = GetFamily(); + ASSERT_THAT(connect(sock_.get(), &addr, sizeof(addr.sa_family)), + SyscallFailsWithErrno(EINVAL)); +} + +TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) { + ASSERT_NO_ERRNO(BindLoopback()); + + struct sockaddr_storage addr_storage = InetAnyAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Send to a different destination than we're connected to. + char buf[512]; + EXPECT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, addr, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); +} + +TEST_P(UdpSocketTest, ZerolengthWriteAllowed) { + // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_NO_ERRNO(BindLoopback()); + // Connect to loopback:bind_addr_+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Bind sock to loopback:bind_addr_+1. + ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); + + char buf[3]; + // Send zero length packet from bind_ to sock_. + ASSERT_THAT(write(bind_.get(), buf, 0), SyscallSucceedsWithValue(0)); + + struct pollfd pfd = {sock_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout*/ 1000), + SyscallSucceedsWithValue(1)); + + // Receive the packet. + char received[3]; + EXPECT_THAT(read(sock_.get(), received, sizeof(received)), + SyscallSucceedsWithValue(0)); +} + +TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) { + // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Bind sock to loopback:bind_addr_port+1. + ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); + + // Set sock to non-blocking. + int opts = 0; + ASSERT_THAT(opts = fcntl(sock_.get(), F_GETFL), SyscallSucceeds()); + ASSERT_THAT(fcntl(sock_.get(), F_SETFL, opts | O_NONBLOCK), + SyscallSucceeds()); + + char buf[3]; + // Send zero length packet from bind_ to sock_. + ASSERT_THAT(write(bind_.get(), buf, 0), SyscallSucceedsWithValue(0)); + + struct pollfd pfd = {sock_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + // Receive the packet. + char received[3]; + EXPECT_THAT(read(sock_.get(), received, sizeof(received)), + SyscallSucceedsWithValue(0)); + EXPECT_THAT(read(sock_.get(), received, sizeof(received)), + SyscallFailsWithErrno(EAGAIN)); +} + +TEST_P(UdpSocketTest, SendAndReceiveNotConnected) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Send some data to bind_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(bind_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, SendAndReceiveConnected) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Bind sock to loopback:bind_addr_port+1. + ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); + + // Send some data from sock to bind_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data. + char received[sizeof(buf)]; + EXPECT_THAT(recv(bind_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, ReceiveFromNotConnected) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Bind sock to loopback:bind_addr_port+2. + struct sockaddr_storage addr2_storage = InetLoopbackAddr(); + struct sockaddr* addr2 = reinterpret_cast(&addr2_storage); + SetPort(&addr2_storage, *Port(&bind_addr_storage_) + 2); + ASSERT_THAT(bind(sock_.get(), addr2, addrlen_), SyscallSucceeds()); + + // Send some data from sock to bind_. + char buf[512]; + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, 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(sock_.get(), buf, sizeof(buf), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, ReceiveBeforeConnect) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Bind sock to loopback:bind_addr_port+2. + struct sockaddr_storage addr2_storage = InetLoopbackAddr(); + struct sockaddr* addr2 = reinterpret_cast(&addr2_storage); + SetPort(&addr2_storage, *Port(&bind_addr_storage_) + 2); + ASSERT_THAT(bind(sock_.get(), addr2, addrlen_), SyscallSucceeds()); + + // Send some data from sock to bind_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Receive the data. It works because it was sent before the connect. + char received[sizeof(buf)]; + EXPECT_THAT(recv(bind_.get(), 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(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + EXPECT_THAT(recv(bind_.get(), buf, sizeof(buf), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); +} + +TEST_P(UdpSocketTest, ReceiveFrom) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Bind sock to loopback:bind_addr_port+1. + ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); + + // Send some data from sock to bind_. + char buf[512]; + RandomizeBuffer(buf, sizeof(buf)); + + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + + // Receive the data and sender address. + char received[sizeof(buf)]; + struct sockaddr_storage addr2; + socklen_t addr2len = sizeof(addr2); + EXPECT_THAT(recvfrom(bind_.get(), received, sizeof(received), 0, + reinterpret_cast(&addr2), &addr2len), + SyscallSucceedsWithValue(sizeof(received))); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); + EXPECT_EQ(addr2len, addrlen_); + EXPECT_EQ(memcmp(addr, &addr2, addrlen_), 0); +} + +TEST_P(UdpSocketTest, Listen) { + ASSERT_THAT(listen(sock_.get(), SOMAXCONN), + SyscallFailsWithErrno(EOPNOTSUPP)); +} + +TEST_P(UdpSocketTest, Accept) { + ASSERT_THAT(accept(sock_.get(), 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) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + // Bind to loopback:bind_addr_port+1 and connect to bind_addr_. + ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Verify that we get EWOULDBLOCK when there is nothing to read. + char received[512]; + EXPECT_THAT(recv(bind_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + const char* buf = "abc"; + EXPECT_THAT(write(sock_.get(), buf, 3), SyscallSucceedsWithValue(3)); + + int opts = 0; + ASSERT_THAT(opts = fcntl(bind_.get(), F_GETFL), SyscallSucceeds()); + ASSERT_THAT(fcntl(bind_.get(), F_SETFL, opts | O_NONBLOCK), + SyscallSucceeds()); + ASSERT_THAT(opts = fcntl(bind_.get(), F_GETFL), SyscallSucceeds()); + ASSERT_NE(opts & O_NONBLOCK, 0); + + EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallSucceeds()); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + // We should get the data even though read has been shutdown. + EXPECT_THAT(recv(bind_.get(), 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(bind_.get(), 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(bind_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); + + EXPECT_THAT(recv(bind_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Connect the socket, then try to shutdown again. + ASSERT_NO_ERRNO(BindLoopback()); + + // Connect to loopback:bind_addr_port+1. + struct sockaddr_storage addr_storage = InetLoopbackAddr(); + struct sockaddr* addr = reinterpret_cast(&addr_storage); + SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); + ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); + + EXPECT_THAT(recv(bind_.get(), 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()); + + ASSERT_NO_ERRNO(BindLoopback()); + + char received[512]; + EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); + + EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Connect the socket, then try to shutdown again. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallSucceeds()); + + EXPECT_THAT(recv(sock_.get(), 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()); + ASSERT_NO_ERRNO(BindLoopback()); + + char received[512]; + EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Connect the socket, then shutdown from another thread. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + ScopedThread t([&] { + absl::SleepFor(absl::Milliseconds(200)); + EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallSucceeds()); + }); + EXPECT_THAT(RetryEINTR(recv)(sock_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(0)); + t.Join(); + + EXPECT_THAT(RetryEINTR(recv)(sock_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(0)); +} + +TEST_P(UdpSocketTest, WriteShutdown) { + ASSERT_NO_ERRNO(BindLoopback()); + EXPECT_THAT(shutdown(sock_.get(), SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + EXPECT_THAT(shutdown(sock_.get(), SHUT_WR), SyscallSucceeds()); +} + +TEST_P(UdpSocketTest, SynchronousReceive) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Send some data to bind_ 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)(bind_.get(), received, sizeof(received), MSG_DONTWAIT), + SyscallFailsWithErrno(EWOULDBLOCK)); + + // Start the thread. + ScopedThread t([&] { + absl::SleepFor(absl::Milliseconds(200)); + ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, this->bind_addr_, + this->addrlen_), + SyscallSucceedsWithValue(sizeof(buf))); + }); + + EXPECT_THAT(RetryEINTR(recv)(bind_.get(), received, sizeof(received), 0), + SyscallSucceedsWithValue(512)); + EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); +} + +TEST_P(UdpSocketTest, BoundaryPreserved_SendRecv) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Send 3 packets from sock to bind_. + constexpr int psize = 100; + char buf[3 * psize]; + RandomizeBuffer(buf, sizeof(buf)); + + for (int i = 0; i < 3; ++i) { + ASSERT_THAT( + sendto(sock_.get(), buf + i * psize, psize, 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(psize)); + } + + // Receive the data as 3 separate packets. + char received[6 * psize]; + for (int i = 0; i < 3; ++i) { + EXPECT_THAT(recv(bind_.get(), received + i * psize, 3 * psize, 0), + SyscallSucceedsWithValue(psize)); + } + EXPECT_EQ(memcmp(buf, received, 3 * psize), 0); +} + +TEST_P(UdpSocketTest, BoundaryPreserved_WritevReadv) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Direct writes from sock to bind_. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + // Send 2 packets from sock to bind_, 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( + reinterpret_cast(buf) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + ASSERT_THAT(writev(sock_.get(), 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( + reinterpret_cast(received) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + ASSERT_THAT(readv(bind_.get(), iov, 3), + SyscallSucceedsWithValue(2 * kPieceSize)); + } + EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); +} + +TEST_P(UdpSocketTest, BoundaryPreserved_SendMsgRecvMsg) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Send 2 packets from sock to bind_, 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( + reinterpret_cast(buf) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + struct msghdr msg = {}; + msg.msg_name = bind_addr_; + msg.msg_namelen = addrlen_; + msg.msg_iov = iov; + msg.msg_iovlen = 2; + ASSERT_THAT(sendmsg(sock_.get(), &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( + reinterpret_cast(received) + (i + 2 * j) * kPieceSize); + iov[j].iov_len = kPieceSize; + } + struct msghdr msg = {}; + msg.msg_iov = iov; + msg.msg_iovlen = 3; + ASSERT_THAT(recvmsg(bind_.get(), &msg, 0), + SyscallSucceedsWithValue(2 * kPieceSize)); + } + EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); +} + +TEST_P(UdpSocketTest, FIONREADShutdown) { + ASSERT_NO_ERRNO(BindLoopback()); + + int n = -1; + EXPECT_THAT(ioctl(sock_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // A UDP socket must be connected before it can be shutdown. + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(sock_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(sock_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); +} + +TEST_P(UdpSocketTest, FIONREADWriteShutdown) { + int n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + ASSERT_NO_ERRNO(BindLoopback()); + + // A UDP socket must be connected before it can be shutdown. + ASSERT_THAT(connect(bind_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + const char str[] = "abc"; + ASSERT_THAT(send(bind_.get(), str, sizeof(str), 0), + SyscallSucceedsWithValue(sizeof(str))); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, sizeof(str)); + + EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, sizeof(str)); +} + +// NOTE: Do not use `FIONREAD` as test name because it will be replaced by the +// corresponding macro and become `0x541B`. +TEST_P(UdpSocketTest, Fionread) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Check that the bound socket with an empty buffer reports an empty first + // packet. + int n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // Send 3 packets from sock to bind_. + constexpr int psize = 100; + char buf[3 * psize]; + RandomizeBuffer(buf, sizeof(buf)); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + for (int i = 0; i < 3; ++i) { + ASSERT_THAT( + sendto(sock_.get(), buf + i * psize, psize, 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(psize)); + + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + // 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(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, psize); + } +} + +TEST_P(UdpSocketTest, FIONREADZeroLengthPacket) { + ASSERT_NO_ERRNO(BindLoopback()); + + // Check that the bound socket with an empty buffer reports an empty first + // packet. + int n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + // Send 3 packets from sock to bind_. + constexpr int psize = 100; + char buf[3 * psize]; + RandomizeBuffer(buf, sizeof(buf)); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + for (int i = 0; i < 3; ++i) { + ASSERT_THAT( + sendto(sock_.get(), buf + i * psize, 0, 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(0)); + + // TODO(gvisor.dev/issue/2726): sending a zero-length message to a hostinet + // socket does not cause a poll event to be triggered. + if (!IsRunningWithHostinet()) { + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + } + + // 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(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + } +} + +TEST_P(UdpSocketTest, FIONREADZeroLengthWriteShutdown) { + int n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + ASSERT_NO_ERRNO(BindLoopback()); + + // A UDP socket must be connected before it can be shutdown. + ASSERT_THAT(connect(bind_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + const char str[] = "abc"; + ASSERT_THAT(send(bind_.get(), str, 0, 0), SyscallSucceedsWithValue(0)); + + n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); + + EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallSucceeds()); + + n = -1; + EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); + EXPECT_EQ(n, 0); +} + +TEST_P(UdpSocketTest, SoNoCheckOffByDefault) { + // TODO(gvisor.dev/issue/1202): SO_NO_CHECK socket option not supported by + // hostinet. + SKIP_IF(IsRunningWithHostinet()); + + int v = -1; + socklen_t optlen = sizeof(v); + ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, &optlen), + SyscallSucceeds()); + ASSERT_EQ(v, kSockOptOff); + ASSERT_EQ(optlen, sizeof(v)); +} + +TEST_P(UdpSocketTest, SoNoCheck) { + // TODO(gvisor.dev/issue/1202): SO_NO_CHECK socket option not supported by + // hostinet. + SKIP_IF(IsRunningWithHostinet()); + + int v = kSockOptOn; + socklen_t optlen = sizeof(v); + ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, optlen), + SyscallSucceeds()); + v = -1; + ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, &optlen), + SyscallSucceeds()); + ASSERT_EQ(v, kSockOptOn); + ASSERT_EQ(optlen, sizeof(v)); + + v = kSockOptOff; + ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, optlen), + SyscallSucceeds()); + v = -1; + ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, &optlen), + SyscallSucceeds()); + ASSERT_EQ(v, kSockOptOff); + ASSERT_EQ(optlen, sizeof(v)); +} + +#ifdef __linux__ +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)(bind_.get(), &msg, MSG_ERRQUEUE), + SyscallFailsWithErrno(EAGAIN)); +} +#endif // __linux__ + +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(bind_.get(), 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_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + int v = 1; + ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), + SyscallSucceeds()); + + char buf[3]; + // Send zero length packet from sock to bind_. + ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, 0), + SyscallSucceedsWithValue(0)); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + 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)(bind_.get(), &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(bind_.get(), SIOCGSTAMP, &tv), + SyscallFailsWithErrno(ENOENT)); +} + +TEST_P(UdpSocketTest, WriteShutdownNotConnected) { + EXPECT_THAT(shutdown(bind_.get(), SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); +} + +TEST_P(UdpSocketTest, TimestampIoctl) { + // TODO(gvisor.dev/issue/1202): ioctl() is not supported by hostinet. + SKIP_IF(IsRunningWithHostinet()); + + ASSERT_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + char buf[3]; + // Send packet from sock to bind_. + ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + // There should be no control messages. + char recv_buf[sizeof(buf)]; + ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(bind_.get(), recv_buf, sizeof(recv_buf))); + + // A nonzero timeval should be available via ioctl. + struct timeval tv = {}; + ASSERT_THAT(ioctl(bind_.get(), 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_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + struct timeval tv = {}; + ASSERT_THAT(ioctl(sock_.get(), 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_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); + + char buf[3]; + // Send packet from sock to bind_. + ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, sizeof(buf)), + SyscallSucceedsWithValue(sizeof(buf))); + ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, 0), + SyscallSucceedsWithValue(0)); + + struct pollfd pfd = {bind_.get(), POLLIN, 0}; + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + // There should be no control messages. + char recv_buf[sizeof(buf)]; + ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(bind_.get(), recv_buf, sizeof(recv_buf))); + + // A nonzero timeval should be available via ioctl. + struct timeval tv = {}; + ASSERT_THAT(ioctl(bind_.get(), 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(bind_.get(), SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), + SyscallSucceeds()); + ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, 0), + SyscallSucceedsWithValue(0)); + + ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), + SyscallSucceedsWithValue(1)); + + // 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)(bind_.get(), &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(bind_.get(), 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) { + ASSERT_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, 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(bind_.get(), 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(sock_.get(), 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)(sock_.get(), &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 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)(bind_.get(), &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/146661005): Setting TOS via cmsg not supported for netstack. + SKIP_IF(IsRunningOnGvisor() && !IsRunningWithHostinet()); + + ASSERT_NO_ERRNO(BindLoopback()); + ASSERT_THAT(connect(sock_.get(), bind_addr_, 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(bind_.get(), 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 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)(sock_.get(), &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 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)(bind_.get(), &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_P(UdpSocketTest, RecvBufLimitsEmptyRcvBuf) { + // Discover minimum buffer size by setting it to zero. + constexpr int kRcvBufSz = 0; + ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &kRcvBufSz, + sizeof(kRcvBufSz)), + SyscallSucceeds()); + + int min = 0; + socklen_t min_len = sizeof(min); + ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &min, &min_len), + SyscallSucceeds()); + + // Bind bind_ to loopback. + ASSERT_NO_ERRNO(BindLoopback()); + + { + // Send data of size min and verify that it's received. + std::vector buf(min); + RandomizeBuffer(buf.data(), buf.size()); + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + std::vector received(buf.size()); + EXPECT_THAT( + recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), + SyscallSucceedsWithValue(received.size())); + } + + { + // Send data of size min + 1 and verify that its received. Both linux and + // Netstack accept a dgram that exceeds rcvBuf limits if the receive buffer + // is currently empty. + std::vector buf(min + 1); + RandomizeBuffer(buf.data(), buf.size()); + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + + std::vector received(buf.size()); + EXPECT_THAT( + recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), + SyscallSucceedsWithValue(received.size())); + } +} + +// Test that receive buffer limits are enforced. +TEST_P(UdpSocketTest, RecvBufLimits) { + // Bind s_ to loopback. + ASSERT_NO_ERRNO(BindLoopback()); + + int min = 0; + { + // Discover minimum buffer size by trying to set it to zero. + constexpr int kRcvBufSz = 0; + ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &kRcvBufSz, + sizeof(kRcvBufSz)), + SyscallSucceeds()); + + socklen_t min_len = sizeof(min); + ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &min, &min_len), + SyscallSucceeds()); + } + + // Now set the limit to min * 4. + int new_rcv_buf_sz = min * 4; + if (!IsRunningOnGvisor() || IsRunningWithHostinet()) { + // Linux doubles the value specified so just set to min * 2. + new_rcv_buf_sz = min * 2; + } + + ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &new_rcv_buf_sz, + sizeof(new_rcv_buf_sz)), + SyscallSucceeds()); + int rcv_buf_sz = 0; + { + socklen_t rcv_buf_len = sizeof(rcv_buf_sz); + ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &rcv_buf_sz, + &rcv_buf_len), + SyscallSucceeds()); + } + + { + std::vector buf(min); + RandomizeBuffer(buf.data(), buf.size()); + + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + int sent = 4; + if (IsRunningOnGvisor() && !IsRunningWithHostinet()) { + // Linux seems to drop the 4th packet even though technically it should + // fit in the receive buffer. + ASSERT_THAT( + sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), + SyscallSucceedsWithValue(buf.size())); + sent++; + } + + for (int i = 0; i < sent - 1; i++) { + // Receive the data. + std::vector received(buf.size()); + EXPECT_THAT( + recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), + SyscallSucceedsWithValue(received.size())); + EXPECT_EQ(memcmp(buf.data(), received.data(), buf.size()), 0); + } + + // The last receive should fail with EAGAIN as the last packet should have + // been dropped due to lack of space in the receive buffer. + std::vector received(buf.size()); + EXPECT_THAT( + recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), + SyscallFailsWithErrno(EAGAIN)); + } +} + +#ifdef __linux__ + +// TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. +// gVisor currently silently ignores attaching a filter. +TEST_P(UdpSocketTest, SetSocketDetachFilter) { + // Program generated using sudo tcpdump -i lo udp and port 1234 -dd + struct sock_filter code[] = { + {0x28, 0, 0, 0x0000000c}, {0x15, 0, 6, 0x000086dd}, + {0x30, 0, 0, 0x00000014}, {0x15, 0, 15, 0x00000011}, + {0x28, 0, 0, 0x00000036}, {0x15, 12, 0, 0x000004d2}, + {0x28, 0, 0, 0x00000038}, {0x15, 10, 11, 0x000004d2}, + {0x15, 0, 10, 0x00000800}, {0x30, 0, 0, 0x00000017}, + {0x15, 0, 8, 0x00000011}, {0x28, 0, 0, 0x00000014}, + {0x45, 6, 0, 0x00001fff}, {0xb1, 0, 0, 0x0000000e}, + {0x48, 0, 0, 0x0000000e}, {0x15, 2, 0, 0x000004d2}, + {0x48, 0, 0, 0x00000010}, {0x15, 0, 1, 0x000004d2}, + {0x6, 0, 0, 0x00040000}, {0x6, 0, 0, 0x00000000}, + }; + struct sock_fprog bpf = { + .len = ABSL_ARRAYSIZE(code), + .filter = code, + }; + ASSERT_THAT( + setsockopt(sock_.get(), SOL_SOCKET, SO_ATTACH_FILTER, &bpf, sizeof(bpf)), + SyscallSucceeds()); + + constexpr int val = 0; + ASSERT_THAT( + setsockopt(sock_.get(), SOL_SOCKET, SO_DETACH_FILTER, &val, sizeof(val)), + SyscallSucceeds()); +} + +#endif // __linux__ + +TEST_P(UdpSocketTest, SetSocketDetachFilterNoInstalledFilter) { + // TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. + SKIP_IF(IsRunningOnGvisor()); + constexpr int val = 0; + ASSERT_THAT( + setsockopt(sock_.get(), SOL_SOCKET, SO_DETACH_FILTER, &val, sizeof(val)), + SyscallFailsWithErrno(ENOENT)); +} + +TEST_P(UdpSocketTest, GetSocketDetachFilter) { + int val = 0; + socklen_t val_len = sizeof(val); + ASSERT_THAT( + getsockopt(sock_.get(), SOL_SOCKET, SO_DETACH_FILTER, &val, &val_len), + SyscallFailsWithErrno(ENOPROTOOPT)); +} + 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 deleted file mode 100644 index 54a0594f7..000000000 --- a/test/syscalls/linux/udp_socket_errqueue_test_case.cc +++ /dev/null @@ -1,57 +0,0 @@ -// 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. - -#ifndef __fuchsia__ - -#include -#include -#include -#include -#include -#include -#include - -#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/udp_socket_test_cases.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)(bind_.get(), &msg, MSG_ERRQUEUE), - SyscallFailsWithErrno(EAGAIN)); -} - -} // namespace testing -} // namespace gvisor - -#endif // __fuchsia__ diff --git a/test/syscalls/linux/udp_socket_test_cases.cc b/test/syscalls/linux/udp_socket_test_cases.cc deleted file mode 100644 index 60c48ed6e..000000000 --- a/test/syscalls/linux/udp_socket_test_cases.cc +++ /dev/null @@ -1,1781 +0,0 @@ -// 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 -#include -#ifndef __fuchsia__ -#include -#endif // __fuchsia__ -#include -#include -#include -#include -#include - -#include "absl/strings/str_format.h" -#ifndef SIOCGSTAMP -#include -#endif - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/time/clock.h" -#include "absl/time/time.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" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.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(addr); - return &sin->sin_port; - } - case AF_INET6: { - auto sin6 = reinterpret_cast(addr); - return &sin6->sin6_port; - } - } - - return nullptr; -} - -// Sets addr port to "port". -void SetPort(struct sockaddr_storage* addr, uint16_t port) { - switch (addr->ss_family) { - case AF_INET: { - auto sin = reinterpret_cast(addr); - sin->sin_port = port; - break; - } - case AF_INET6: { - auto sin6 = reinterpret_cast(addr); - sin6->sin6_port = port; - break; - } - } -} - -void UdpSocketTest::SetUp() { - addrlen_ = GetAddrLength(); - - bind_ = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); - memset(&bind_addr_storage_, 0, sizeof(bind_addr_storage_)); - bind_addr_ = reinterpret_cast(&bind_addr_storage_); - - sock_ = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); -} - -int UdpSocketTest::GetFamily() { - if (GetParam() == AddressFamily::kIpv4) { - return AF_INET; - } - return AF_INET6; -} - -PosixError UdpSocketTest::BindLoopback() { - bind_addr_storage_ = InetLoopbackAddr(); - struct sockaddr* bind_addr_ = - reinterpret_cast(&bind_addr_storage_); - return BindSocket(bind_.get(), bind_addr_); -} - -PosixError UdpSocketTest::BindAny() { - bind_addr_storage_ = InetAnyAddr(); - struct sockaddr* bind_addr_ = - reinterpret_cast(&bind_addr_storage_); - return BindSocket(bind_.get(), bind_addr_); -} - -PosixError UdpSocketTest::BindSocket(int socket, struct sockaddr* addr) { - socklen_t len = sizeof(bind_addr_storage_); - - // Bind, then check that we get the right address. - RETURN_ERROR_IF_SYSCALL_FAIL(bind(socket, addr, addrlen_)); - - RETURN_ERROR_IF_SYSCALL_FAIL(getsockname(socket, addr, &len)); - - if (addrlen_ != len) { - return PosixError( - EINVAL, - absl::StrFormat("getsockname len: %u expected: %u", len, addrlen_)); - } - return PosixError(0); -} - -socklen_t UdpSocketTest::GetAddrLength() { - struct sockaddr_storage addr; - if (GetFamily() == AF_INET) { - auto sin = reinterpret_cast(&addr); - return sizeof(*sin); - } - - auto sin6 = reinterpret_cast(&addr); - return sizeof(*sin6); -} - -sockaddr_storage UdpSocketTest::InetAnyAddr() { - struct sockaddr_storage addr; - memset(&addr, 0, sizeof(addr)); - reinterpret_cast(&addr)->sa_family = GetFamily(); - - if (GetFamily() == AF_INET) { - auto sin = reinterpret_cast(&addr); - sin->sin_addr.s_addr = htonl(INADDR_ANY); - sin->sin_port = htons(0); - return addr; - } - - auto sin6 = reinterpret_cast(&addr); - sin6->sin6_addr = IN6ADDR_ANY_INIT; - sin6->sin6_port = htons(0); - return addr; -} - -sockaddr_storage UdpSocketTest::InetLoopbackAddr() { - struct sockaddr_storage addr; - memset(&addr, 0, sizeof(addr)); - reinterpret_cast(&addr)->sa_family = GetFamily(); - - if (GetFamily() == AF_INET) { - auto sin = reinterpret_cast(&addr); - sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); - sin->sin_port = htons(0); - return addr; - } - auto sin6 = reinterpret_cast(&addr); - sin6->sin6_addr = in6addr_loopback; - sin6->sin6_port = htons(0); - return addr; -} - -void UdpSocketTest::Disconnect(int sockfd) { - sockaddr_storage addr_storage = InetAnyAddr(); - sockaddr* addr = reinterpret_cast(&addr_storage); - socklen_t addrlen = sizeof(addr_storage); - - addr->sa_family = AF_UNSPEC; - ASSERT_THAT(connect(sockfd, addr, addrlen), SyscallSucceeds()); - - // Check that after disconnect the socket is bound to the ANY address. - EXPECT_THAT(getsockname(sockfd, addr, &addrlen), SyscallSucceeds()); - if (GetParam() == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast(addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast(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, Creation) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); - EXPECT_THAT(close(sock.release()), SyscallSucceeds()); - - sock = ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, 0)); - EXPECT_THAT(close(sock.release()), SyscallSucceeds()); - - ASSERT_THAT(socket(GetFamily(), 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(bind_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - struct sockaddr_storage any = InetAnyAddr(); - EXPECT_EQ(memcmp(&addr, reinterpret_cast(&any), addrlen_), - 0); - - ASSERT_NO_ERRNO(BindLoopback()); - - EXPECT_THAT( - getsockname(bind_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, bind_addr_, addrlen_), 0); -} - -TEST_P(UdpSocketTest, Getpeername) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Check that we're not connected. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Connect, then check that we get the right address. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, bind_addr_, addrlen_), 0); -} - -TEST_P(UdpSocketTest, SendNotConnected) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Do send & write, they must fail. - char buf[512]; - EXPECT_THAT(send(sock_.get(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(EDESTADDRREQ)); - - EXPECT_THAT(write(sock_.get(), buf, sizeof(buf)), - SyscallFailsWithErrno(EDESTADDRREQ)); - - // Use sendto. - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ConnectBinds) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect the socket. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ReceiveNotBound) { - char buf[512]; - EXPECT_THAT(recv(sock_.get(), buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, Bind) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Try to bind again. - EXPECT_THAT(bind(bind_.get(), bind_addr_, 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(bind_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, bind_addr_, addrlen_), 0); -} - -TEST_P(UdpSocketTest, BindInUse) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Try to bind again. - EXPECT_THAT(bind(sock_.get(), bind_addr_, addrlen_), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(UdpSocketTest, ReceiveAfterConnect) { - ASSERT_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Send from sock_ to bind_ - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(bind_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveAfterDisconnect) { - ASSERT_NO_ERRNO(BindLoopback()); - - for (int i = 0; i < 2; i++) { - // Connet sock_ to bound address. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - // Send from sock to bind_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(bind_.get(), buf, sizeof(buf), 0, - reinterpret_cast(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(sock_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Disconnect sock_. - struct sockaddr unspec = {}; - unspec.sa_family = AF_UNSPEC; - ASSERT_THAT(connect(sock_.get(), &unspec, sizeof(unspec.sa_family)), - SyscallSucceeds()); - } -} - -TEST_P(UdpSocketTest, Connect) { - ASSERT_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, bind_addr_, addrlen_), 0); - - // Try to bind after connect. - struct sockaddr_storage any = InetAnyAddr(); - EXPECT_THAT( - bind(sock_.get(), reinterpret_cast(&any), addrlen_), - SyscallFailsWithErrno(EINVAL)); - - struct sockaddr_storage bind2_storage = InetLoopbackAddr(); - struct sockaddr* bind2_addr = - reinterpret_cast(&bind2_storage); - FileDescriptor bind2 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetFamily(), SOCK_DGRAM, IPPROTO_UDP)); - ASSERT_NO_ERRNO(BindSocket(bind2.get(), bind2_addr)); - - // Try to connect again. - EXPECT_THAT(connect(sock_.get(), bind2_addr, addrlen_), SyscallSucceeds()); - - // Check that peer name changed. - peerlen = sizeof(peer); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, bind2_addr, addrlen_), 0); -} - -TEST_P(UdpSocketTest, ConnectAnyZero) { - // TODO(138658473): Enable when we can connect to port 0 with gVisor. - SKIP_IF(IsRunningOnGvisor()); - - struct sockaddr_storage any = InetAnyAddr(); - EXPECT_THAT( - connect(sock_.get(), reinterpret_cast(&any), addrlen_), - SyscallSucceeds()); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, ConnectAnyWithPort) { - ASSERT_NO_ERRNO(BindAny()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAny) { - // TODO(138658473): Enable when we can connect to port 0 with gVisor. - SKIP_IF(IsRunningOnGvisor()); - struct sockaddr_storage any = InetAnyAddr(); - EXPECT_THAT( - connect(sock_.get(), reinterpret_cast(&any), addrlen_), - SyscallSucceeds()); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - - Disconnect(sock_.get()); -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAnyWithPort) { - ASSERT_NO_ERRNO(BindAny()); - EXPECT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(*Port(&bind_addr_storage_), *Port(&addr)); - - Disconnect(sock_.get()); -} - -TEST_P(UdpSocketTest, DisconnectAfterBind) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Bind to the next port above bind_. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_NO_ERRNO(BindSocket(sock_.get(), addr)); - - // Connect the socket. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - struct sockaddr_storage unspec = {}; - unspec.ss_family = AF_UNSPEC; - EXPECT_THAT(connect(sock_.get(), reinterpret_cast(&unspec), - sizeof(unspec.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - socklen_t addrlen = sizeof(unspec); - EXPECT_THAT( - getsockname(sock_.get(), reinterpret_cast(&unspec), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(addr, &unspec, addrlen_), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(sock_.get(), addr, &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, BindToAnyConnnectToLocalhost) { - ASSERT_NO_ERRNO(BindAny()); - - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - socklen_t addrlen = sizeof(addr); - - // Connect the socket. - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - EXPECT_THAT(getsockname(bind_.get(), 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(addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); - } else { - auto addr_out = reinterpret_cast(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) { - ASSERT_NO_ERRNO(BindLoopback()); - - struct sockaddr_storage any_storage = InetAnyAddr(); - struct sockaddr* any = reinterpret_cast(&any_storage); - SetPort(&any_storage, *Port(&bind_addr_storage_) + 1); - - ASSERT_NO_ERRNO(BindSocket(sock_.get(), any)); - - // Connect the socket. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - Disconnect(sock_.get()); - - // Check that we're still bound. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, any, addrlen), 0); - - addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, Disconnect) { - ASSERT_NO_ERRNO(BindLoopback()); - - struct sockaddr_storage any_storage = InetAnyAddr(); - struct sockaddr* any = reinterpret_cast(&any_storage); - SetPort(&any_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_NO_ERRNO(BindSocket(sock_.get(), any)); - - for (int i = 0; i < 2; i++) { - // Try to connect again. - EXPECT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, bind_addr_, addrlen_), 0); - - // Try to disconnect. - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT(connect(sock_.get(), reinterpret_cast(&addr), - sizeof(addr.ss_family)), - SyscallSucceeds()); - - peerlen = sizeof(peer); - EXPECT_THAT( - getpeername(sock_.get(), reinterpret_cast(&peer), &peerlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sock_.get(), reinterpret_cast(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(*Port(&addr), *Port(&any_storage)); - } -} - -TEST_P(UdpSocketTest, ConnectBadAddress) { - struct sockaddr addr = {}; - addr.sa_family = GetFamily(); - ASSERT_THAT(connect(sock_.get(), &addr, sizeof(addr.sa_family)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) { - ASSERT_NO_ERRNO(BindLoopback()); - - struct sockaddr_storage addr_storage = InetAnyAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Send to a different destination than we're connected to. - char buf[512]; - EXPECT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, addr, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowed) { - // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_NO_ERRNO(BindLoopback()); - // Connect to loopback:bind_addr_+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Bind sock to loopback:bind_addr_+1. - ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from bind_ to sock_. - ASSERT_THAT(write(bind_.get(), buf, 0), SyscallSucceedsWithValue(0)); - - struct pollfd pfd = {sock_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout*/ 1000), - SyscallSucceedsWithValue(1)); - - // Receive the packet. - char received[3]; - EXPECT_THAT(read(sock_.get(), received, sizeof(received)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) { - // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect to loopback:bind_addr_port+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Bind sock to loopback:bind_addr_port+1. - ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); - - // Set sock to non-blocking. - int opts = 0; - ASSERT_THAT(opts = fcntl(sock_.get(), F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(sock_.get(), F_SETFL, opts | O_NONBLOCK), - SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from bind_ to sock_. - ASSERT_THAT(write(bind_.get(), buf, 0), SyscallSucceedsWithValue(0)); - - struct pollfd pfd = {sock_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - // Receive the packet. - char received[3]; - EXPECT_THAT(read(sock_.get(), received, sizeof(received)), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(read(sock_.get(), received, sizeof(received)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(UdpSocketTest, SendAndReceiveNotConnected) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Send some data to bind_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(bind_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, SendAndReceiveConnected) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect to loopback:bind_addr_port+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Bind sock to loopback:TestPort+1. - ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); - - // Send some data from sock to bind_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(bind_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveFromNotConnected) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect to loopback:bind_addr_port+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Bind sock to loopback:bind_addr_port+2. - struct sockaddr_storage addr2_storage = InetLoopbackAddr(); - struct sockaddr* addr2 = reinterpret_cast(&addr2_storage); - SetPort(&addr2_storage, *Port(&bind_addr_storage_) + 2); - ASSERT_THAT(bind(sock_.get(), addr2, addrlen_), SyscallSucceeds()); - - // Send some data from sock to bind_. - char buf[512]; - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, 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(sock_.get(), buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveBeforeConnect) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Bind sock to loopback:bind_addr_port+2. - struct sockaddr_storage addr2_storage = InetLoopbackAddr(); - struct sockaddr* addr2 = reinterpret_cast(&addr2_storage); - SetPort(&addr2_storage, *Port(&bind_addr_storage_) + 2); - ASSERT_THAT(bind(sock_.get(), addr2, addrlen_), SyscallSucceeds()); - - // Send some data from sock to bind_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Connect to loopback:TestPort+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Receive the data. It works because it was sent before the connect. - char received[sizeof(buf)]; - EXPECT_THAT(recv(bind_.get(), 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(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(recv(bind_.get(), buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveFrom) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect to loopback:bind_addr_port+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Bind sock to loopback:TestPort+1. - ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); - - // Send some data from sock to bind_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data and sender address. - char received[sizeof(buf)]; - struct sockaddr_storage addr2; - socklen_t addr2len = sizeof(addr2); - EXPECT_THAT(recvfrom(bind_.get(), received, sizeof(received), 0, - reinterpret_cast(&addr2), &addr2len), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - EXPECT_EQ(addr2len, addrlen_); - EXPECT_EQ(memcmp(addr, &addr2, addrlen_), 0); -} - -TEST_P(UdpSocketTest, Listen) { - ASSERT_THAT(listen(sock_.get(), SOMAXCONN), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -TEST_P(UdpSocketTest, Accept) { - ASSERT_THAT(accept(sock_.get(), 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) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect to loopback:bind_addr_port+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - // Bind to loopback:bind_addr_port+1 and connect to bind_addr_. - ASSERT_THAT(bind(sock_.get(), addr, addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Verify that we get EWOULDBLOCK when there is nothing to read. - char received[512]; - EXPECT_THAT(recv(bind_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - const char* buf = "abc"; - EXPECT_THAT(write(sock_.get(), buf, 3), SyscallSucceedsWithValue(3)); - - int opts = 0; - ASSERT_THAT(opts = fcntl(bind_.get(), F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(bind_.get(), F_SETFL, opts | O_NONBLOCK), - SyscallSucceeds()); - ASSERT_THAT(opts = fcntl(bind_.get(), F_GETFL), SyscallSucceeds()); - ASSERT_NE(opts & O_NONBLOCK, 0); - - EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallSucceeds()); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - // We should get the data even though read has been shutdown. - EXPECT_THAT(recv(bind_.get(), 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(bind_.get(), 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(bind_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(bind_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_NO_ERRNO(BindLoopback()); - - // Connect to loopback:bind_addr_port+1. - struct sockaddr_storage addr_storage = InetLoopbackAddr(); - struct sockaddr* addr = reinterpret_cast(&addr_storage); - SetPort(&addr_storage, *Port(&bind_addr_storage_) + 1); - ASSERT_THAT(connect(bind_.get(), addr, addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(bind_.get(), 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()); - - ASSERT_NO_ERRNO(BindLoopback()); - - char received[512]; - EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallSucceeds()); - - EXPECT_THAT(recv(sock_.get(), 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()); - ASSERT_NO_ERRNO(BindLoopback()); - - char received[512]; - EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then shutdown from another thread. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(sock_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallSucceeds()); - }); - EXPECT_THAT(RetryEINTR(recv)(sock_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); - t.Join(); - - EXPECT_THAT(RetryEINTR(recv)(sock_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, WriteShutdown) { - ASSERT_NO_ERRNO(BindLoopback()); - EXPECT_THAT(shutdown(sock_.get(), SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - EXPECT_THAT(shutdown(sock_.get(), SHUT_WR), SyscallSucceeds()); -} - -TEST_P(UdpSocketTest, SynchronousReceive) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Send some data to bind_ 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)(bind_.get(), received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Start the thread. - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - ASSERT_THAT(sendto(sock_.get(), buf, sizeof(buf), 0, this->bind_addr_, - this->addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - }); - - EXPECT_THAT(RetryEINTR(recv)(bind_.get(), received, sizeof(received), 0), - SyscallSucceedsWithValue(512)); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendRecv) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Send 3 packets from sock to bind_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT( - sendto(sock_.get(), buf + i * psize, psize, 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(psize)); - } - - // Receive the data as 3 separate packets. - char received[6 * psize]; - for (int i = 0; i < 3; ++i) { - EXPECT_THAT(recv(bind_.get(), received + i * psize, 3 * psize, 0), - SyscallSucceedsWithValue(psize)); - } - EXPECT_EQ(memcmp(buf, received, 3 * psize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_WritevReadv) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Direct writes from sock to bind_. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - // Send 2 packets from sock to bind_, 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( - reinterpret_cast(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(writev(sock_.get(), 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( - reinterpret_cast(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(readv(bind_.get(), iov, 3), - SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendMsgRecvMsg) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Send 2 packets from sock to bind_, 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( - reinterpret_cast(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_name = bind_addr_; - msg.msg_namelen = addrlen_; - msg.msg_iov = iov; - msg.msg_iovlen = 2; - ASSERT_THAT(sendmsg(sock_.get(), &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( - reinterpret_cast(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_iov = iov; - msg.msg_iovlen = 3; - ASSERT_THAT(recvmsg(bind_.get(), &msg, 0), - SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, FIONREADShutdown) { - ASSERT_NO_ERRNO(BindLoopback()); - - int n = -1; - EXPECT_THAT(ioctl(sock_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(sock_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(sock_.get(), SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(sock_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, FIONREADWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - ASSERT_NO_ERRNO(BindLoopback()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(bind_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(bind_.get(), str, sizeof(str), 0), - SyscallSucceedsWithValue(sizeof(str))); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); - - EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); -} - -// NOTE: Do not use `FIONREAD` as test name because it will be replaced by the -// corresponding macro and become `0x541B`. -TEST_P(UdpSocketTest, Fionread) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from sock to bind_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - for (int i = 0; i < 3; ++i) { - ASSERT_THAT( - sendto(sock_.get(), buf + i * psize, psize, 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(psize)); - - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - // 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(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, psize); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthPacket) { - ASSERT_NO_ERRNO(BindLoopback()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from sock to bind_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - for (int i = 0; i < 3; ++i) { - ASSERT_THAT( - sendto(sock_.get(), buf + i * psize, 0, 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(0)); - - // TODO(gvisor.dev/issue/2726): sending a zero-length message to a hostinet - // socket does not cause a poll event to be triggered. - if (!IsRunningWithHostinet()) { - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - } - - // 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(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - ASSERT_NO_ERRNO(BindLoopback()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(bind_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(bind_.get(), str, 0, 0), SyscallSucceedsWithValue(0)); - - n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(bind_.get(), SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(bind_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, SoNoCheckOffByDefault) { - // TODO(gvisor.dev/issue/1202): SO_NO_CHECK socket option not supported by - // hostinet. - SKIP_IF(IsRunningWithHostinet()); - - int v = -1; - socklen_t optlen = sizeof(v); - ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, &optlen), - SyscallSucceeds()); - ASSERT_EQ(v, kSockOptOff); - ASSERT_EQ(optlen, sizeof(v)); -} - -TEST_P(UdpSocketTest, SoNoCheck) { - // TODO(gvisor.dev/issue/1202): SO_NO_CHECK socket option not supported by - // hostinet. - SKIP_IF(IsRunningWithHostinet()); - - int v = kSockOptOn; - socklen_t optlen = sizeof(v); - ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, optlen), - SyscallSucceeds()); - v = -1; - ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, &optlen), - SyscallSucceeds()); - ASSERT_EQ(v, kSockOptOn); - ASSERT_EQ(optlen, sizeof(v)); - - v = kSockOptOff; - ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, optlen), - SyscallSucceeds()); - v = -1; - ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_NO_CHECK, &v, &optlen), - SyscallSucceeds()); - ASSERT_EQ(v, kSockOptOff); - ASSERT_EQ(optlen, sizeof(v)); -} - -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(bind_.get(), 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_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - int v = 1; - ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from sock to bind_. - ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, 0), - SyscallSucceedsWithValue(0)); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - 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)(bind_.get(), &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(bind_.get(), SIOCGSTAMP, &tv), - SyscallFailsWithErrno(ENOENT)); -} - -TEST_P(UdpSocketTest, WriteShutdownNotConnected) { - EXPECT_THAT(shutdown(bind_.get(), SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, TimestampIoctl) { - // TODO(gvisor.dev/issue/1202): ioctl() is not supported by hostinet. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from sock to bind_. - ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(bind_.get(), recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(bind_.get(), 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_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - struct timeval tv = {}; - ASSERT_THAT(ioctl(sock_.get(), 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_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from sock to bind_. - ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, 0), - SyscallSucceedsWithValue(0)); - - struct pollfd pfd = {bind_.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(bind_.get(), recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(bind_.get(), 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(bind_.get(), SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(write)(sock_.get(), buf, 0), - SyscallSucceedsWithValue(0)); - - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, /*timeout=*/1000), - SyscallSucceedsWithValue(1)); - - // 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)(bind_.get(), &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(bind_.get(), 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) { - ASSERT_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, 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(bind_.get(), 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(sock_.get(), 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)(sock_.get(), &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 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)(bind_.get(), &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/146661005): Setting TOS via cmsg not supported for netstack. - SKIP_IF(IsRunningOnGvisor() && !IsRunningWithHostinet()); - - ASSERT_NO_ERRNO(BindLoopback()); - ASSERT_THAT(connect(sock_.get(), bind_addr_, 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(bind_.get(), 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 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)(sock_.get(), &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 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)(bind_.get(), &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_P(UdpSocketTest, RecvBufLimitsEmptyRcvBuf) { - // Discover minimum buffer size by setting it to zero. - constexpr int kRcvBufSz = 0; - ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &kRcvBufSz, - sizeof(kRcvBufSz)), - SyscallSucceeds()); - - int min = 0; - socklen_t min_len = sizeof(min); - ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &min, &min_len), - SyscallSucceeds()); - - // Bind bind_ to loopback. - ASSERT_NO_ERRNO(BindLoopback()); - - { - // Send data of size min and verify that it's received. - std::vector buf(min); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - std::vector received(buf.size()); - EXPECT_THAT( - recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), - SyscallSucceedsWithValue(received.size())); - } - - { - // Send data of size min + 1 and verify that its received. Both linux and - // Netstack accept a dgram that exceeds rcvBuf limits if the receive buffer - // is currently empty. - std::vector buf(min + 1); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - - std::vector received(buf.size()); - EXPECT_THAT( - recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), - SyscallSucceedsWithValue(received.size())); - } -} - -// Test that receive buffer limits are enforced. -TEST_P(UdpSocketTest, RecvBufLimits) { - // Bind s_ to loopback. - ASSERT_NO_ERRNO(BindLoopback()); - - int min = 0; - { - // Discover minimum buffer size by trying to set it to zero. - constexpr int kRcvBufSz = 0; - ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &kRcvBufSz, - sizeof(kRcvBufSz)), - SyscallSucceeds()); - - socklen_t min_len = sizeof(min); - ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &min, &min_len), - SyscallSucceeds()); - } - - // Now set the limit to min * 4. - int new_rcv_buf_sz = min * 4; - if (!IsRunningOnGvisor() || IsRunningWithHostinet()) { - // Linux doubles the value specified so just set to min * 2. - new_rcv_buf_sz = min * 2; - } - - ASSERT_THAT(setsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &new_rcv_buf_sz, - sizeof(new_rcv_buf_sz)), - SyscallSucceeds()); - int rcv_buf_sz = 0; - { - socklen_t rcv_buf_len = sizeof(rcv_buf_sz); - ASSERT_THAT(getsockopt(bind_.get(), SOL_SOCKET, SO_RCVBUF, &rcv_buf_sz, - &rcv_buf_len), - SyscallSucceeds()); - } - - { - std::vector buf(min); - RandomizeBuffer(buf.data(), buf.size()); - - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - int sent = 4; - if (IsRunningOnGvisor() && !IsRunningWithHostinet()) { - // Linux seems to drop the 4th packet even though technically it should - // fit in the receive buffer. - ASSERT_THAT( - sendto(sock_.get(), buf.data(), buf.size(), 0, bind_addr_, addrlen_), - SyscallSucceedsWithValue(buf.size())); - sent++; - } - - for (int i = 0; i < sent - 1; i++) { - // Receive the data. - std::vector received(buf.size()); - EXPECT_THAT( - recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), - SyscallSucceedsWithValue(received.size())); - EXPECT_EQ(memcmp(buf.data(), received.data(), buf.size()), 0); - } - - // The last receive should fail with EAGAIN as the last packet should have - // been dropped due to lack of space in the receive buffer. - std::vector received(buf.size()); - EXPECT_THAT( - recv(bind_.get(), received.data(), received.size(), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); - } -} - -#ifndef __fuchsia__ - -// TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. -// gVisor currently silently ignores attaching a filter. -TEST_P(UdpSocketTest, SetSocketDetachFilter) { - // Program generated using sudo tcpdump -i lo udp and port 1234 -dd - struct sock_filter code[] = { - {0x28, 0, 0, 0x0000000c}, {0x15, 0, 6, 0x000086dd}, - {0x30, 0, 0, 0x00000014}, {0x15, 0, 15, 0x00000011}, - {0x28, 0, 0, 0x00000036}, {0x15, 12, 0, 0x000004d2}, - {0x28, 0, 0, 0x00000038}, {0x15, 10, 11, 0x000004d2}, - {0x15, 0, 10, 0x00000800}, {0x30, 0, 0, 0x00000017}, - {0x15, 0, 8, 0x00000011}, {0x28, 0, 0, 0x00000014}, - {0x45, 6, 0, 0x00001fff}, {0xb1, 0, 0, 0x0000000e}, - {0x48, 0, 0, 0x0000000e}, {0x15, 2, 0, 0x000004d2}, - {0x48, 0, 0, 0x00000010}, {0x15, 0, 1, 0x000004d2}, - {0x6, 0, 0, 0x00040000}, {0x6, 0, 0, 0x00000000}, - }; - struct sock_fprog bpf = { - .len = ABSL_ARRAYSIZE(code), - .filter = code, - }; - ASSERT_THAT( - setsockopt(sock_.get(), SOL_SOCKET, SO_ATTACH_FILTER, &bpf, sizeof(bpf)), - SyscallSucceeds()); - - constexpr int val = 0; - ASSERT_THAT( - setsockopt(sock_.get(), SOL_SOCKET, SO_DETACH_FILTER, &val, sizeof(val)), - SyscallSucceeds()); -} - -TEST_P(UdpSocketTest, SetSocketDetachFilterNoInstalledFilter) { - // TODO(gvisor.dev/2746): Support SO_ATTACH_FILTER/SO_DETACH_FILTER. - SKIP_IF(IsRunningOnGvisor()); - constexpr int val = 0; - ASSERT_THAT( - setsockopt(sock_.get(), SOL_SOCKET, SO_DETACH_FILTER, &val, sizeof(val)), - SyscallFailsWithErrno(ENOENT)); -} - -TEST_P(UdpSocketTest, GetSocketDetachFilter) { - int val = 0; - socklen_t val_len = sizeof(val); - ASSERT_THAT( - getsockopt(sock_.get(), SOL_SOCKET, SO_DETACH_FILTER, &val, &val_len), - SyscallFailsWithErrno(ENOPROTOOPT)); -} - -#endif // __fuchsia__ - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/udp_socket_test_cases.h b/test/syscalls/linux/udp_socket_test_cases.h deleted file mode 100644 index f7e25c805..000000000 --- a/test/syscalls/linux/udp_socket_test_cases.h +++ /dev/null @@ -1,82 +0,0 @@ -// 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 - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.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 { - protected: - // Creates two sockets that will be used by test cases. - void SetUp() override; - - // Binds the socket bind_ to the loopback and updates bind_addr_. - PosixError BindLoopback(); - - // Binds the socket bind_ to Any and updates bind_addr_. - PosixError BindAny(); - - // Binds given socket to address addr and updates. - PosixError BindSocket(int socket, struct sockaddr* addr); - - // Return initialized Any address to port 0. - struct sockaddr_storage InetAnyAddr(); - - // Return initialized Loopback address to port 0. - struct sockaddr_storage InetLoopbackAddr(); - - // Disconnects socket sockfd. - void Disconnect(int sockfd); - - // Get family for the test. - int GetFamily(); - - // Socket used by Bind methods - FileDescriptor bind_; - - // Second socket used for tests. - FileDescriptor sock_; - - // Address for bind_ socket. - struct sockaddr* bind_addr_; - - // Initialized to the length based on GetFamily(). - socklen_t addrlen_; - - // Storage for bind_addr_. - struct sockaddr_storage bind_addr_storage_; - - private: - // Helper to initialize addrlen_ for the test case. - socklen_t GetAddrLength(); -}; -} // namespace testing -} // namespace gvisor - -#endif // THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ -- cgit v1.2.3