1 files changed, 146 insertions, 0 deletions
diff --git a/test/syscalls/linux/socket.cc b/test/syscalls/linux/socket.cc
new file mode 100644
index 000000000..703d594a2
--- /dev/null
+++ b/test/syscalls/linux/socket.cc
@@ -0,0 +1,146 @@
+// 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 <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "gtest/gtest.h"
+#include "test/syscalls/linux/socket_test_util.h"
+#include "test/util/file_descriptor.h"
+#include "test/util/temp_umask.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+TEST(SocketTest, UnixSocketPairProtocol) {
+  int socks[2];
+  ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, PF_UNIX, socks),
+              SyscallSucceeds());
+  close(socks[0]);
+  close(socks[1]);
+}
+
+TEST(SocketTest, ProtocolUnix) {
+  struct {
+    int domain, type, protocol;
+  } tests[] = {
+      {AF_UNIX, SOCK_STREAM, PF_UNIX},
+      {AF_UNIX, SOCK_SEQPACKET, PF_UNIX},
+      {AF_UNIX, SOCK_DGRAM, PF_UNIX},
+  };
+  for (int i = 0; i < ABSL_ARRAYSIZE(tests); i++) {
+    ASSERT_NO_ERRNO_AND_VALUE(
+        Socket(tests[i].domain, tests[i].type, tests[i].protocol));
+  }
+}
+
+TEST(SocketTest, ProtocolInet) {
+  struct {
+    int domain, type, protocol;
+  } tests[] = {
+      {AF_INET, SOCK_DGRAM, IPPROTO_UDP},
+      {AF_INET, SOCK_STREAM, IPPROTO_TCP},
+  };
+  for (int i = 0; i < ABSL_ARRAYSIZE(tests); i++) {
+    ASSERT_NO_ERRNO_AND_VALUE(
+        Socket(tests[i].domain, tests[i].type, tests[i].protocol));
+  }
+}
+
+TEST(SocketTest, UnixSocketFileMode) {
+  // TODO(gvisor.dev/issue/1624): Re-enable this test once VFS1 is deleted. It
+  // should pass in VFS2.
+  SKIP_IF(IsRunningOnGvisor());
+
+  FileDescriptor bound =
+      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
+
+  // The permissions of the file created with bind(2) should be defined by the
+  // permissions of the bound socket and the umask.
+  mode_t sock_perm = 0765, mask = 0123;
+  ASSERT_THAT(fchmod(bound.get(), sock_perm), SyscallSucceeds());
+  TempUmask m(mask);
+
+  struct sockaddr_un addr =
+      ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX));
+  ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr),
+                   sizeof(addr)),
+              SyscallSucceeds());
+
+  struct stat statbuf = {};
+  ASSERT_THAT(stat(addr.sun_path, &statbuf), SyscallSucceeds());
+  EXPECT_EQ(statbuf.st_mode, S_IFSOCK | sock_perm & ~mask);
+}
+
+TEST(SocketTest, UnixConnectNeedsWritePerm) {
+  // TODO(gvisor.dev/issue/1624): Re-enable this test once VFS1 is deleted. It
+  // should succeed in VFS2.
+  SKIP_IF(IsRunningOnGvisor());
+
+  FileDescriptor bound =
+      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
+
+  struct sockaddr_un addr =
+      ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX));
+  ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr),
+                   sizeof(addr)),
+              SyscallSucceeds());
+  ASSERT_THAT(listen(bound.get(), 1), SyscallSucceeds());
+
+  // Connect should fail without write perms.
+  ASSERT_THAT(chmod(addr.sun_path, 0500), SyscallSucceeds());
+  FileDescriptor client =
+      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
+  EXPECT_THAT(connect(client.get(), reinterpret_cast<struct sockaddr*>(&addr),
+                      sizeof(addr)),
+              SyscallFailsWithErrno(EACCES));
+
+  // Connect should succeed with write perms.
+  ASSERT_THAT(chmod(addr.sun_path, 0200), SyscallSucceeds());
+  EXPECT_THAT(connect(client.get(), reinterpret_cast<struct sockaddr*>(&addr),
+                      sizeof(addr)),
+              SyscallSucceeds());
+}
+
+using SocketOpenTest = ::testing::TestWithParam<int>;
+
+// UDS cannot be opened.
+TEST_P(SocketOpenTest, Unix) {
+  // FIXME(b/142001530): Open incorrectly succeeds on gVisor.
+  //
+  // TODO(gvisor.dev/issue/1624): Re-enable this test once VFS1 is deleted. It
+  // should succeed in VFS2.
+  SKIP_IF(IsRunningOnGvisor());
+
+  FileDescriptor bound =
+      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
+
+  struct sockaddr_un addr =
+      ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX));
+
+  ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr),
+                   sizeof(addr)),
+              SyscallSucceeds());
+
+  EXPECT_THAT(open(addr.sun_path, GetParam()), SyscallFailsWithErrno(ENXIO));
+}
+
+INSTANTIATE_TEST_SUITE_P(OpenModes, SocketOpenTest,
+                         ::testing::Values(O_RDONLY, O_RDWR));
+
+}  // namespace testing
+}  // namespace gvisor