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-rw-r--r--test/syscalls/linux/pwritev2.cc345
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diff --git a/test/syscalls/linux/pwritev2.cc b/test/syscalls/linux/pwritev2.cc
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index f6a0fc96c..000000000
--- a/test/syscalls/linux/pwritev2.cc
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@@ -1,345 +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 "gtest/gtest.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_pwritev2
-#if defined(__x86_64__)
-#define SYS_pwritev2 328
-#else
-#error "Unknown architecture"
-#endif
-#endif // SYS_pwrite2
-
-#ifndef RWF_HIPRI
-#define RWF_HIPRI 0x1
-#endif // RWF_HIPRI
-
-#ifndef RWF_DSYNC
-#define RWF_DSYNC 0x2
-#endif // RWF_DSYNC
-
-#ifndef RWF_SYNC
-#define RWF_SYNC 0x4
-#endif // RWF_SYNC
-
-constexpr int kBufSize = 1024;
-
-void SetContent(std::vector<char>& content) {
- for (uint i = 0; i < content.size(); i++) {
- content[i] = static_cast<char>((i % 10) + '0');
- }
-}
-
-ssize_t pwritev2(unsigned long fd, const struct iovec* iov,
- unsigned long iovcnt, off_t offset, unsigned long flags) {
- // syscall on pwritev2 does some weird things (see man syscall and search
- // pwritev2), so we insert a 0 to word align the flags argument on native.
- return syscall(SYS_pwritev2, fd, iov, iovcnt, offset, 0, flags);
-}
-
-// This test is the base case where we call pwritev (no offset, no flags).
-TEST(Writev2Test, TestBaseCall) {
- SKIP_IF(pwritev2(-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_RDWR));
-
- std::vector<char> content(kBufSize);
- SetContent(content);
- struct iovec iov[2];
- iov[0].iov_base = content.data();
- iov[0].iov_len = content.size() / 2;
- iov[1].iov_base = static_cast<char*>(iov[0].iov_base) + (content.size() / 2);
- iov[1].iov_len = content.size() / 2;
-
- ASSERT_THAT(pwritev2(fd.get(), iov, /*iovcnt=*/2,
- /*offset=*/0, /*flags=*/0),
- SyscallSucceedsWithValue(kBufSize));
-
- std::vector<char> buf(kBufSize);
- EXPECT_THAT(read(fd.get(), buf.data(), kBufSize),
- SyscallSucceedsWithValue(kBufSize));
-
- EXPECT_EQ(content, buf);
-}
-
-// This test is where we call pwritev2 with a positive offset and no flags.
-TEST(Pwritev2Test, TestValidPositiveOffset) {
- SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS);
-
- std::string prefix(kBufSize, '0');
-
- const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), prefix, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR));
-
- std::vector<char> content(kBufSize);
- SetContent(content);
- struct iovec iov;
- iov.iov_base = content.data();
- iov.iov_len = content.size();
-
- ASSERT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/prefix.size(), /*flags=*/0),
- SyscallSucceedsWithValue(content.size()));
-
- std::vector<char> buf(prefix.size() + content.size());
- EXPECT_THAT(read(fd.get(), buf.data(), buf.size()),
- SyscallSucceedsWithValue(buf.size()));
-
- std::vector<char> want(prefix.begin(), prefix.end());
- want.insert(want.end(), content.begin(), content.end());
- EXPECT_EQ(want, buf);
-}
-
-// This test is the base case where we call writev by using -1 as the offset.
-// The write should use the file offset, so the test increments the file offset
-// prior to call pwritev2.
-TEST(Pwritev2Test, TestNegativeOneOffset) {
- SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS);
-
- const std::string prefix = "00";
- const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), prefix.data(), TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR));
- ASSERT_THAT(lseek(fd.get(), prefix.size(), SEEK_SET),
- SyscallSucceedsWithValue(prefix.size()));
-
- std::vector<char> content(kBufSize);
- SetContent(content);
- struct iovec iov;
- iov.iov_base = content.data();
- iov.iov_len = content.size();
-
- ASSERT_THAT(pwritev2(fd.get(), &iov, /*iovcnt*/ 1,
- /*offset=*/static_cast<off_t>(-1), /*flags=*/0),
- SyscallSucceedsWithValue(content.size()));
-
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR),
- SyscallSucceedsWithValue(prefix.size() + content.size()));
-
- std::vector<char> buf(prefix.size() + content.size());
- EXPECT_THAT(pread(fd.get(), buf.data(), buf.size(), /*offset=*/0),
- SyscallSucceedsWithValue(buf.size()));
-
- std::vector<char> want(prefix.begin(), prefix.end());
- want.insert(want.end(), content.begin(), content.end());
- EXPECT_EQ(want, buf);
-}
-
-// pwritev2 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(Pwritev2Test, TestCallWithRWF_HIPRI) {
- SKIP_IF(pwritev2(-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_RDWR));
-
- std::vector<char> content(kBufSize);
- SetContent(content);
- struct iovec iov;
- iov.iov_base = content.data();
- iov.iov_len = content.size();
-
- EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/0, /*flags=*/RWF_HIPRI),
- SyscallSucceedsWithValue(kBufSize));
-
- std::vector<char> buf(content.size());
- EXPECT_THAT(read(fd.get(), buf.data(), buf.size()),
- SyscallSucceedsWithValue(buf.size()));
-
- EXPECT_EQ(buf, content);
-}
-
-// This test checks that pwritev2 can be called with valid flags
-TEST(Pwritev2Test, TestCallWithValidFlags) {
- SKIP_IF(pwritev2(-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_RDWR));
-
- std::vector<char> content(kBufSize, '0');
- struct iovec iov;
- iov.iov_base = content.data();
- iov.iov_len = content.size();
-
- EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/0, /*flags=*/RWF_DSYNC),
- SyscallSucceedsWithValue(kBufSize));
-
- std::vector<char> buf(content.size());
- EXPECT_THAT(read(fd.get(), buf.data(), buf.size()),
- SyscallSucceedsWithValue(buf.size()));
-
- EXPECT_EQ(buf, content);
-
- SetContent(content);
-
- EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/0, /*flags=*/0x4),
- SyscallSucceedsWithValue(kBufSize));
-
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR),
- SyscallSucceedsWithValue(content.size()));
-
- EXPECT_THAT(pread(fd.get(), buf.data(), buf.size(), /*offset=*/0),
- SyscallSucceedsWithValue(buf.size()));
-
- EXPECT_EQ(buf, content);
-}
-
-// This test calls pwritev2 with a bad file descriptor.
-TEST(Writev2Test, TestBadFile) {
- SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS);
- ASSERT_THAT(pwritev2(/*fd=*/-1, /*iov=*/nullptr, /*iovcnt=*/0,
- /*offset=*/0, /*flags=*/0),
- SyscallFailsWithErrno(EBADF));
-}
-
-// This test calls pwrite2 with an invalid offset.
-TEST(Pwritev2Test, TestInvalidOffset) {
- SKIP_IF(pwritev2(-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_RDWR));
-
- char buf[16];
- struct iovec iov;
- iov.iov_base = buf;
- iov.iov_len = sizeof(buf);
-
- EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/static_cast<off_t>(-8), /*flags=*/0),
- SyscallFailsWithErrno(EINVAL));
-}
-
-TEST(Pwritev2Test, TestUnseekableFileValid) {
- SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS);
-
- int pipe_fds[2];
-
- ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds());
-
- std::vector<char> content(32, '0');
- SetContent(content);
- struct iovec iov;
- iov.iov_base = content.data();
- iov.iov_len = content.size();
-
- EXPECT_THAT(pwritev2(pipe_fds[1], &iov, /*iovcnt=*/1,
- /*offset=*/static_cast<off_t>(-1), /*flags=*/0),
- SyscallSucceedsWithValue(content.size()));
-
- std::vector<char> buf(content.size());
- EXPECT_THAT(read(pipe_fds[0], buf.data(), buf.size()),
- SyscallSucceedsWithValue(buf.size()));
-
- EXPECT_EQ(content, buf);
-
- EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds());
- EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds());
-}
-
-// Calling pwritev2 with a non-negative offset calls pwritev. Calling pwritev
-// with an unseekable file is not allowed. A pipe is used for an unseekable
-// file.
-TEST(Pwritev2Test, TestUnseekableFileInValid) {
- SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS);
-
- int pipe_fds[2];
- char buf[16];
- struct iovec iov;
- iov.iov_base = buf;
- iov.iov_len = sizeof(buf);
-
- ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds());
-
- EXPECT_THAT(pwritev2(pipe_fds[1], &iov, /*iovcnt=*/1,
- /*offset=*/2, /*flags=*/0),
- SyscallFailsWithErrno(ESPIPE));
-
- EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds());
- EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds());
-}
-
-TEST(Pwritev2Test, TestReadOnlyFile) {
- SKIP_IF(pwritev2(-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));
-
- char buf[16];
- struct iovec iov;
- iov.iov_base = buf;
- iov.iov_len = sizeof(buf);
-
- EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/0, /*flags=*/0),
- SyscallFailsWithErrno(EBADF));
-}
-
-// This test calls pwritev2 with an invalid flag.
-TEST(Pwritev2Test, TestInvalidFlag) {
- SKIP_IF(pwritev2(-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_RDWR | O_DIRECT));
-
- char buf[16];
- struct iovec iov;
- iov.iov_base = buf;
- iov.iov_len = sizeof(buf);
-
- EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1,
- /*offset=*/0, /*flags=*/0xF0),
- SyscallFailsWithErrno(EOPNOTSUPP));
-}
-
-} // namespace
-} // namespace testing
-} // namespace gvisor
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