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Diffstat (limited to 'test/syscalls/linux/preadv2.cc')
-rw-r--r-- | test/syscalls/linux/preadv2.cc | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/test/syscalls/linux/preadv2.cc b/test/syscalls/linux/preadv2.cc deleted file mode 100644 index cd936ea90..000000000 --- a/test/syscalls/linux/preadv2.cc +++ /dev/null @@ -1,278 +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 <fcntl.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/uio.h> - -#include <string> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#ifndef SYS_preadv2 -#if defined(__x86_64__) -#define SYS_preadv2 327 -#else -#error "Unknown architecture" -#endif -#endif // SYS_preadv2 - -#ifndef RWF_HIPRI -#define RWF_HIPRI 0x1 -#endif // RWF_HIPRI - -constexpr int kBufSize = 1024; - -std::string SetContent() { - std::string content; - for (int i = 0; i < kBufSize; i++) { - content += static_cast<char>((i % 10) + '0'); - } - return content; -} - -ssize_t preadv2(unsigned long fd, const struct iovec* iov, unsigned long iovcnt, - off_t offset, unsigned long flags) { - // syscall on preadv2 does some weird things (see man syscall and search - // preadv2), so we insert a 0 to word align the flags argument on native. - return syscall(SYS_preadv2, fd, iov, iovcnt, offset, 0, flags); -} - -// This test is the base case where we call preadv (no offset, no flags). -TEST(Preadv2Test, TestBaseCall) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - std::vector<char> buf(kBufSize); - struct iovec iov[2]; - iov[0].iov_base = buf.data(); - iov[0].iov_len = buf.size() / 2; - iov[1].iov_base = static_cast<char*>(iov[0].iov_base) + (content.size() / 2); - iov[1].iov_len = content.size() / 2; - - EXPECT_THAT(preadv2(fd.get(), iov, /*iovcnt*/ 2, /*offset=*/0, /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} - -// This test is where we call preadv with an offset and no flags. -TEST(Preadv2Test, TestValidPositiveOffset) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - const std::string prefix = "0"; - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), prefix + content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT(preadv2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/prefix.size(), - /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} - -// This test is the base case where we call readv by using -1 as the offset. The -// read should use the file offset, so the test increments it by one prior to -// calling preadv2. -TEST(Preadv2Test, TestNegativeOneOffset) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - const std::string prefix = "231"; - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), prefix + content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - ASSERT_THAT(lseek(fd.get(), prefix.size(), SEEK_SET), - SyscallSucceedsWithValue(prefix.size())); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT(preadv2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/-1, /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(prefix.size() + buf.size())); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} - -// preadv2 requires if the RWF_HIPRI flag is passed, the fd must be opened with -// O_DIRECT. This test implements a correct call with the RWF_HIPRI flag. -TEST(Preadv2Test, TestCallWithRWF_HIPRI) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - EXPECT_THAT(fsync(fd.get()), SyscallSucceeds()); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT( - preadv2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/0, /*flags=*/RWF_HIPRI), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} -// This test calls preadv2 with an invalid flag. -TEST(Preadv2Test, TestInvalidFlag) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY | O_DIRECT)); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT(preadv2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0xF0), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -// This test calls preadv2 with an invalid offset. -TEST(Preadv2Test, TestInvalidOffset) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY | O_DIRECT)); - - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - - EXPECT_THAT(preadv2(fd.get(), iov.get(), /*iovcnt=*/1, /*offset=*/-8, - /*flags=*/0), - SyscallFailsWithErrno(EINVAL)); -} - -// This test calls preadv with a file set O_WRONLY. -TEST(Preadv2Test, TestUnreadableFile) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_WRONLY)); - - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - - EXPECT_THAT(preadv2(fd.get(), iov.get(), /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0), - SyscallFailsWithErrno(EBADF)); -} - -// Calling preadv2 with a non-negative offset calls preadv. Calling preadv with -// an unseekable file is not allowed. A pipe is used for an unseekable file. -TEST(Preadv2Test, TestUnseekableFileInvalid) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - int pipe_fds[2]; - - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - - EXPECT_THAT(preadv2(pipe_fds[0], iov.get(), /*iovcnt=*/1, - /*offset=*/2, /*flags=*/0), - SyscallFailsWithErrno(ESPIPE)); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -TEST(Preadv2Test, TestUnseekableFileValid) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - int pipe_fds[2]; - - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - std::vector<char> content(32, 'X'); - - EXPECT_THAT(write(pipe_fds[1], content.data(), content.size()), - SyscallSucceedsWithValue(content.size())); - - std::vector<char> buf(content.size()); - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = buf.data(); - iov[0].iov_len = buf.size(); - - EXPECT_THAT(preadv2(pipe_fds[0], iov.get(), /*iovcnt=*/1, - /*offset=*/static_cast<off_t>(-1), /*flags=*/0), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_EQ(content, buf); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor |