Open source system call tests.

PiperOrigin-RevId: 224886231
Change-Id: I0fccb4d994601739d8b16b1d4e6b31f40297fb22

1 files changed, 146 insertions, 0 deletions

diff --git a/test/syscalls/linux/bind.cc b/test/syscalls/linux/bind.cc
new file mode 100644
index 000000000..354e8e53c
--- /dev/null
+++ b/test/syscalls/linux/bind.cc
@@ -0,0 +1,146 @@
+// Copyright 2018 Google LLC
+//
+// 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 <stdio.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "gtest/gtest.h"
+#include "gtest/gtest.h"
+#include "test/syscalls/linux/socket_test_util.h"
+#include "test/syscalls/linux/unix_domain_socket_test_util.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+TEST_P(AllSocketPairTest, Bind) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallSucceeds());
+}
+
+TEST_P(AllSocketPairTest, BindTooLong) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  // first_addr is a sockaddr_storage being used as a sockaddr_un. Use the full
+  // length which is longer than expected for a Unix socket.
+  ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
+                   sizeof(sockaddr_storage)),
+              SyscallFailsWithErrno(EINVAL));
+}
+
+TEST_P(AllSocketPairTest, DoubleBindSocket) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallSucceeds());
+
+  EXPECT_THAT(
+      bind(sockets->first_fd(), sockets->first_addr(),
+           sockets->first_addr_size()),
+      // Linux 4.09 returns EINVAL here, but some time before 4.19 it switched
+      // to EADDRINUSE.
+      AnyOf(SyscallFailsWithErrno(EADDRINUSE), SyscallFailsWithErrno(EINVAL)));
+}
+
+TEST_P(AllSocketPairTest, GetLocalAddr) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallSucceeds());
+  socklen_t addressLength = sockets->first_addr_size();
+  struct sockaddr_storage address = {};
+  ASSERT_THAT(getsockname(sockets->first_fd(), (struct sockaddr*)(&address),
+                          &addressLength),
+              SyscallSucceeds());
+  EXPECT_EQ(
+      0, memcmp(&address, sockets->first_addr(), sockets->first_addr_size()));
+}
+
+TEST_P(AllSocketPairTest, GetLocalAddrWithoutBind) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  socklen_t addressLength = sockets->first_addr_size();
+  struct sockaddr_storage received_address = {};
+  ASSERT_THAT(
+      getsockname(sockets->first_fd(), (struct sockaddr*)(&received_address),
+                  &addressLength),
+      SyscallSucceeds());
+  struct sockaddr_storage want_address = {};
+  want_address.ss_family = sockets->first_addr()->sa_family;
+  EXPECT_EQ(0, memcmp(&received_address, &want_address, addressLength));
+}
+
+TEST_P(AllSocketPairTest, GetRemoteAddressWithoutConnect) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+
+  socklen_t addressLength = sockets->first_addr_size();
+  struct sockaddr_storage address = {};
+  ASSERT_THAT(getpeername(sockets->second_fd(), (struct sockaddr*)(&address),
+                          &addressLength),
+              SyscallFailsWithErrno(ENOTCONN));
+}
+
+TEST_P(AllSocketPairTest, DoubleBindAddress) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallSucceeds());
+
+  EXPECT_THAT(bind(sockets->second_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallFailsWithErrno(EADDRINUSE));
+}
+
+TEST_P(AllSocketPairTest, Unbind) {
+  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+  ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallSucceeds());
+  ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds());
+
+  // Filesystem Unix sockets do not release their address when closed.
+  if (sockets->first_addr()->sa_data[0] != 0) {
+    ASSERT_THAT(bind(sockets->second_fd(), sockets->first_addr(),
+                     sockets->first_addr_size()),
+                SyscallFailsWithErrno(EADDRINUSE));
+    return;
+  }
+
+  ASSERT_THAT(bind(sockets->second_fd(), sockets->first_addr(),
+                   sockets->first_addr_size()),
+              SyscallSucceeds());
+  ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds());
+}
+
+INSTANTIATE_TEST_CASE_P(
+    AllUnixDomainSockets, AllSocketPairTest,
+    ::testing::ValuesIn(VecCat<SocketPairKind>(
+        ApplyVec<SocketPairKind>(
+            FilesystemUnboundUnixDomainSocketPair,
+            AllBitwiseCombinations(
+                List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET},
+                List<int>{0, SOCK_NONBLOCK}, List<int>{0, SOCK_CLOEXEC})),
+        ApplyVec<SocketPairKind>(
+            AbstractUnboundUnixDomainSocketPair,
+            AllBitwiseCombinations(
+                List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET},
+                List<int>{0, SOCK_NONBLOCK}, List<int>{0, SOCK_CLOEXEC})))));
+
+}  // namespace
+
+}  // namespace testing
+}  // namespace gvisor