78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
// 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 <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "absl/time/time.h"
|
|
#include "test/util/file_descriptor.h"
|
|
#include "test/util/test_util.h"
|
|
|
|
namespace gvisor {
|
|
namespace testing {
|
|
|
|
namespace {
|
|
|
|
void TestExit(int code) {
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
_exit(code);
|
|
}
|
|
|
|
ASSERT_THAT(pid, SyscallSucceeds());
|
|
|
|
int status;
|
|
EXPECT_THAT(RetryEINTR(waitpid)(pid, &status, 0), SyscallSucceeds());
|
|
EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == code) << status;
|
|
}
|
|
|
|
TEST(ExitTest, Success) { TestExit(0); }
|
|
|
|
TEST(ExitTest, Failure) { TestExit(1); }
|
|
|
|
// This test ensures that a process's file descriptors are closed when it calls
|
|
// exit(). In order to test this, the parent tries to read from a pipe whose
|
|
// write end is held by the child. While the read is blocking, the child exits,
|
|
// which should cause the parent to read 0 bytes due to EOF.
|
|
TEST(ExitTest, CloseFds) {
|
|
int pipe_fds[2];
|
|
ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds());
|
|
|
|
FileDescriptor read_fd(pipe_fds[0]);
|
|
FileDescriptor write_fd(pipe_fds[1]);
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
read_fd.reset();
|
|
|
|
SleepSafe(absl::Seconds(10));
|
|
|
|
_exit(0);
|
|
}
|
|
|
|
EXPECT_THAT(pid, SyscallSucceeds());
|
|
|
|
write_fd.reset();
|
|
|
|
char buf[10];
|
|
EXPECT_THAT(ReadFd(read_fd.get(), buf, sizeof(buf)),
|
|
SyscallSucceedsWithValue(0));
|
|
}
|
|
|
|
} // namespace
|
|
|
|
} // namespace testing
|
|
} // namespace gvisor
|