summaryrefslogtreecommitdiffhomepage
path: root/test/syscalls/linux/lseek.cc
diff options
context:
space:
mode:
Diffstat (limited to 'test/syscalls/linux/lseek.cc')
-rw-r--r--test/syscalls/linux/lseek.cc203
1 files changed, 0 insertions, 203 deletions
diff --git a/test/syscalls/linux/lseek.cc b/test/syscalls/linux/lseek.cc
deleted file mode 100644
index dbc21833f..000000000
--- a/test/syscalls/linux/lseek.cc
+++ /dev/null
@@ -1,203 +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 <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <sys/stat.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 {
-
-TEST(LseekTest, InvalidWhence) {
- const std::string kFileData = "hello world\n";
- const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644));
-
- ASSERT_THAT(lseek(fd.get(), 0, -1), SyscallFailsWithErrno(EINVAL));
-}
-
-TEST(LseekTest, NegativeOffset) {
- const std::string kFileData = "hello world\n";
- const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644));
-
- EXPECT_THAT(lseek(fd.get(), -(kFileData.length() + 1), SEEK_CUR),
- SyscallFailsWithErrno(EINVAL));
-}
-
-// A 32-bit off_t is not large enough to represent an offset larger than
-// maximum file size on standard file systems, so it isn't possible to cause
-// overflow.
-#if defined(__x86_64__) || defined(__aarch64__)
-TEST(LseekTest, Overflow) {
- // HA! Classic Linux. We really should have an EOVERFLOW
- // here, since we're seeking to something that cannot be
- // represented.. but instead we are given an EINVAL.
- const std::string kFileData = "hello world\n";
- const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644));
- EXPECT_THAT(lseek(fd.get(), 0x7fffffffffffffff, SEEK_END),
- SyscallFailsWithErrno(EINVAL));
-}
-#endif
-
-TEST(LseekTest, Set) {
- const std::string kFileData = "hello world\n";
- const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644));
-
- char buf = '\0';
- EXPECT_THAT(lseek(fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0));
- ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1));
- EXPECT_EQ(buf, kFileData.c_str()[0]);
- EXPECT_THAT(lseek(fd.get(), 6, SEEK_SET), SyscallSucceedsWithValue(6));
- ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1));
- EXPECT_EQ(buf, kFileData.c_str()[6]);
-}
-
-TEST(LseekTest, Cur) {
- const std::string kFileData = "hello world\n";
- const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644));
-
- char buf = '\0';
- EXPECT_THAT(lseek(fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0));
- ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1));
- EXPECT_EQ(buf, kFileData.c_str()[0]);
- EXPECT_THAT(lseek(fd.get(), 3, SEEK_CUR), SyscallSucceedsWithValue(4));
- ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1));
- EXPECT_EQ(buf, kFileData.c_str()[4]);
-}
-
-TEST(LseekTest, End) {
- const std::string kFileData = "hello world\n";
- const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
- GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode));
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644));
-
- char buf = '\0';
- EXPECT_THAT(lseek(fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0));
- ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1));
- EXPECT_EQ(buf, kFileData.c_str()[0]);
- EXPECT_THAT(lseek(fd.get(), -2, SEEK_END), SyscallSucceedsWithValue(10));
- ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1));
- EXPECT_EQ(buf, kFileData.c_str()[kFileData.length() - 2]);
-}
-
-TEST(LseekTest, InvalidFD) {
- EXPECT_THAT(lseek(-1, 0, SEEK_SET), SyscallFailsWithErrno(EBADF));
-}
-
-TEST(LseekTest, DirCurEnd) {
- const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(
- Open(GetAbsoluteTestTmpdir().c_str(), O_RDONLY));
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0));
-}
-
-TEST(LseekTest, ProcDir) {
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/self", O_RDONLY));
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds());
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds());
-}
-
-TEST(LseekTest, ProcFile) {
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/meminfo", O_RDONLY));
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds());
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallFailsWithErrno(EINVAL));
-}
-
-TEST(LseekTest, SysDir) {
- const FileDescriptor fd =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/sys/devices", O_RDONLY));
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds());
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds());
-}
-
-TEST(LseekTest, SeekCurrentDir) {
- // From include/linux/fs.h.
- constexpr loff_t MAX_LFS_FILESIZE = 0x7fffffffffffffff;
-
- char* dir = getcwd(NULL, 0);
- const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(dir, O_RDONLY));
-
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds());
- ASSERT_THAT(lseek(fd.get(), 0, SEEK_END),
- // Some filesystems (like ext4) allow lseek(SEEK_END) on a
- // directory and return MAX_LFS_FILESIZE, others return EINVAL.
- AnyOf(SyscallSucceedsWithValue(MAX_LFS_FILESIZE),
- SyscallFailsWithErrno(EINVAL)));
- free(dir);
-}
-
-TEST(LseekTest, ProcStatTwice) {
- const FileDescriptor fd1 =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/stat", O_RDONLY));
- const FileDescriptor fd2 =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/stat", O_RDONLY));
-
- ASSERT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0));
- ASSERT_THAT(lseek(fd1.get(), 0, SEEK_END), SyscallFailsWithErrno(EINVAL));
- ASSERT_THAT(lseek(fd1.get(), 1000, SEEK_CUR), SyscallSucceeds());
- // Check that just because we moved fd1, fd2 doesn't move.
- ASSERT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0));
-
- const FileDescriptor fd3 =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/stat", O_RDONLY));
- ASSERT_THAT(lseek(fd3.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0));
-}
-
-TEST(LseekTest, EtcPasswdDup) {
- const FileDescriptor fd1 =
- ASSERT_NO_ERRNO_AND_VALUE(Open("/etc/passwd", O_RDONLY));
- const FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(fd1.Dup());
-
- ASSERT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0));
- ASSERT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0));
- ASSERT_THAT(lseek(fd1.get(), 1000, SEEK_CUR), SyscallSucceeds());
- // Check that just because we moved fd1, fd2 doesn't move.
- ASSERT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(1000));
-
- const FileDescriptor fd3 = ASSERT_NO_ERRNO_AND_VALUE(fd1.Dup());
- ASSERT_THAT(lseek(fd3.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(1000));
-}
-
-// TODO(magi): Add tests where we have donated in sockets.
-
-} // namespace
-
-} // namespace testing
-} // namespace gvisor
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 03:20:53 +0000