2019-04-29 21:25:05 +00:00
|
|
|
// Copyright 2018 The gVisor Authors.
|
2018-12-10 22:41:40 +00:00
|
|
|
//
|
|
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
// you may not use this file except in compliance with the License.
|
|
|
|
// You may obtain a copy of the License at
|
|
|
|
//
|
|
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
//
|
|
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
// See the License for the specific language governing permissions and
|
|
|
|
// limitations under the License.
|
|
|
|
|
|
|
|
#include <errno.h>
|
|
|
|
#include <fcntl.h>
|
|
|
|
#include <sys/mman.h>
|
|
|
|
#include <sys/socket.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#include "gtest/gtest.h"
|
|
|
|
#include "test/util/file_descriptor.h"
|
|
|
|
#include "test/util/temp_path.h"
|
|
|
|
#include "test/util/test_util.h"
|
|
|
|
|
|
|
|
namespace gvisor {
|
|
|
|
namespace testing {
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
|
|
|
|
class Pread64Test : public ::testing::Test {
|
|
|
|
void SetUp() override {
|
|
|
|
name_ = NewTempAbsPath();
|
|
|
|
ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_CREAT, 0644));
|
|
|
|
}
|
|
|
|
|
|
|
|
void TearDown() override { unlink(name_.c_str()); }
|
|
|
|
|
|
|
|
public:
|
|
|
|
std::string name_;
|
|
|
|
};
|
|
|
|
|
|
|
|
TEST(Pread64TestNoTempFile, BadFileDescriptor) {
|
|
|
|
char buf[1024];
|
|
|
|
EXPECT_THAT(pread64(-1, buf, 1024, 0), SyscallFailsWithErrno(EBADF));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, ZeroBuffer) {
|
|
|
|
const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDWR));
|
|
|
|
|
|
|
|
char msg[] = "hello world";
|
|
|
|
EXPECT_THAT(pwrite64(fd.get(), msg, strlen(msg), 0),
|
|
|
|
SyscallSucceedsWithValue(strlen(msg)));
|
|
|
|
|
|
|
|
char buf[10];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf, 0, 0), SyscallSucceedsWithValue(0));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, BadBuffer) {
|
|
|
|
const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDWR));
|
|
|
|
|
|
|
|
char msg[] = "hello world";
|
|
|
|
EXPECT_THAT(pwrite64(fd.get(), msg, strlen(msg), 0),
|
|
|
|
SyscallSucceedsWithValue(strlen(msg)));
|
|
|
|
|
|
|
|
char* bad_buffer = nullptr;
|
|
|
|
EXPECT_THAT(pread64(fd.get(), bad_buffer, 1024, 0),
|
|
|
|
SyscallFailsWithErrno(EFAULT));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, WriteOnlyNotReadable) {
|
|
|
|
const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_WRONLY));
|
|
|
|
|
|
|
|
char buf[1024];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallFailsWithErrno(EBADF));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, DirNotReadable) {
|
|
|
|
const FileDescriptor fd =
|
|
|
|
ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), O_RDONLY));
|
|
|
|
|
|
|
|
char buf[1024];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallFailsWithErrno(EISDIR));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, BadOffset) {
|
|
|
|
const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDONLY));
|
|
|
|
|
|
|
|
char buf[1024];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf, 1024, -1), SyscallFailsWithErrno(EINVAL));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, OffsetNotIncremented) {
|
|
|
|
const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDWR));
|
|
|
|
|
|
|
|
char msg[] = "hello world";
|
|
|
|
EXPECT_THAT(write(fd.get(), msg, strlen(msg)),
|
|
|
|
SyscallSucceedsWithValue(strlen(msg)));
|
|
|
|
int offset;
|
|
|
|
EXPECT_THAT(offset = lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds());
|
|
|
|
|
|
|
|
char buf1[1024];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf1, 1024, 0),
|
|
|
|
SyscallSucceedsWithValue(strlen(msg)));
|
|
|
|
EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(offset));
|
|
|
|
|
|
|
|
char buf2[1024];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf2, 1024, 3),
|
|
|
|
SyscallSucceedsWithValue(strlen(msg) - 3));
|
|
|
|
EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(offset));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(Pread64Test, EndOfFile) {
|
|
|
|
const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDONLY));
|
|
|
|
|
|
|
|
char buf[1024];
|
|
|
|
EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallSucceedsWithValue(0));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST(Pread64TestNoTempFile, CantReadSocketPair_NoRandomSave) {
|
|
|
|
int sock_fds[2];
|
|
|
|
EXPECT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, sock_fds), SyscallSucceeds());
|
|
|
|
|
|
|
|
char buf[1024];
|
|
|
|
EXPECT_THAT(pread64(sock_fds[0], buf, 1024, 0),
|
|
|
|
SyscallFailsWithErrno(ESPIPE));
|
|
|
|
EXPECT_THAT(pread64(sock_fds[1], buf, 1024, 0),
|
|
|
|
SyscallFailsWithErrno(ESPIPE));
|
|
|
|
|
|
|
|
EXPECT_THAT(close(sock_fds[0]), SyscallSucceeds());
|
|
|
|
EXPECT_THAT(close(sock_fds[1]), SyscallSucceeds());
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST(Pread64TestNoTempFile, CantReadPipe) {
|
|
|
|
char buf[1024];
|
|
|
|
|
|
|
|
int pipe_fds[2];
|
|
|
|
EXPECT_THAT(pipe(pipe_fds), SyscallSucceeds());
|
|
|
|
|
|
|
|
EXPECT_THAT(pread64(pipe_fds[0], buf, 1024, 0),
|
|
|
|
SyscallFailsWithErrno(ESPIPE));
|
|
|
|
|
|
|
|
EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds());
|
|
|
|
EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds());
|
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace
|
|
|
|
|
|
|
|
} // namespace testing
|
|
|
|
} // namespace gvisor
|