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317 lines
8.6 KiB
317 lines
8.6 KiB
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <android-base/file.h>
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#include <gtest/gtest.h>
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#if defined(__BIONIC__)
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#define HAVE_STATX
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#elif defined(__GLIBC_PREREQ)
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#if __GLIBC_PREREQ(2, 28)
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#define HAVE_STATX
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#endif
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#endif
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TEST(sys_stat, futimens) {
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FILE* fp = tmpfile();
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ASSERT_TRUE(fp != nullptr);
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int fd = fileno(fp);
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ASSERT_NE(fd, -1);
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timespec times[2];
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times[0].tv_sec = 123;
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times[0].tv_nsec = 0;
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times[1].tv_sec = 456;
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times[1].tv_nsec = 0;
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ASSERT_EQ(0, futimens(fd, times)) << strerror(errno);
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struct stat sb;
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ASSERT_EQ(0, fstat(fd, &sb));
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ASSERT_EQ(times[0].tv_sec, static_cast<long>(sb.st_atime));
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ASSERT_EQ(times[1].tv_sec, static_cast<long>(sb.st_mtime));
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fclose(fp);
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}
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TEST(sys_stat, futimens_EBADF) {
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timespec times[2];
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times[0].tv_sec = 123;
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times[0].tv_nsec = 0;
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times[1].tv_sec = 456;
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times[1].tv_nsec = 0;
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ASSERT_EQ(-1, futimens(-1, times));
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ASSERT_EQ(EBADF, errno);
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}
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TEST(sys_stat, mkfifo_failure) {
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errno = 0;
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ASSERT_EQ(-1, mkfifo("/", 0666));
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ASSERT_EQ(EEXIST, errno);
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}
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TEST(sys_stat, mkfifoat_failure) {
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errno = 0;
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ASSERT_EQ(-1, mkfifoat(-2, "x", 0666));
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ASSERT_EQ(EBADF, errno);
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}
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TEST(sys_stat, mkfifo) {
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if (getuid() == 0) {
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// Racy but probably sufficient way to get a suitable filename.
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std::string path;
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{
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TemporaryFile tf;
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path = tf.path;
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}
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ASSERT_EQ(0, mkfifo(path.c_str(), 0666));
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struct stat sb;
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ASSERT_EQ(0, stat(path.c_str(), &sb));
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ASSERT_TRUE(S_ISFIFO(sb.st_mode));
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unlink(path.c_str());
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} else {
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// SELinux policy forbids us from creating FIFOs. http://b/17646702.
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GTEST_SKIP() << "SELinux policy forbids non-root from creating FIFOs";
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}
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}
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TEST(sys_stat, stat64_lstat64_fstat64) {
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struct stat64 sb;
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ASSERT_EQ(0, stat64("/proc/version", &sb));
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ASSERT_EQ(0, lstat64("/proc/version", &sb));
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int fd = open("/proc/version", O_RDONLY);
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ASSERT_EQ(0, fstat64(fd, &sb));
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close(fd);
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}
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TEST(sys_stat, statx) {
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#if defined(HAVE_STATX)
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struct statx sx;
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int rc = statx(AT_FDCWD, "/proc/version", AT_STATX_SYNC_AS_STAT, STATX_ALL, &sx);
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if (rc == -1 && errno == ENOSYS) {
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GTEST_SKIP() << "statx returned ENOSYS";
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}
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ASSERT_EQ(0, rc);
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struct stat64 sb;
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ASSERT_EQ(0, stat64("/proc/version", &sb));
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EXPECT_EQ(sb.st_ino, sx.stx_ino);
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EXPECT_EQ(sb.st_mode, sx.stx_mode);
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#else
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GTEST_SKIP() << "statx not available";
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#endif
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}
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TEST(sys_stat, fchmod_EBADF) {
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ASSERT_EQ(-1, fchmod(-1, 0751));
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ASSERT_EQ(EBADF, errno);
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}
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TEST(sys_stat, fchmodat_EFAULT_file) {
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, (char *) 0x1, 0751, 0));
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ASSERT_EQ(EFAULT, errno);
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}
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TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_EFAULT_file) {
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, (char *) 0x1, 0751, AT_SYMLINK_NOFOLLOW));
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#if defined(__BIONIC__)
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ASSERT_EQ(EFAULT, errno);
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#else
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// glibc 2.19 does not implement AT_SYMLINK_NOFOLLOW and always
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// returns ENOTSUP
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ASSERT_EQ(ENOTSUP, errno);
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#endif
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}
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TEST(sys_stat, fchmodat_bad_flags) {
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, ~AT_SYMLINK_NOFOLLOW));
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ASSERT_EQ(EINVAL, errno);
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}
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TEST(sys_stat, fchmodat_bad_flags_ALL) {
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, ~0));
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ASSERT_EQ(EINVAL, errno);
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}
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TEST(sys_stat, fchmodat_nonexistant_file) {
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, 0));
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ASSERT_EQ(ENOENT, errno);
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}
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TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_nonexistant_file) {
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, AT_SYMLINK_NOFOLLOW));
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#if defined(__BIONIC__)
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ASSERT_EQ(ENOENT, errno);
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#else
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// glibc 2.19 does not implement AT_SYMLINK_NOFOLLOW and always
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// returns ENOTSUP
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ASSERT_EQ(ENOTSUP, errno);
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#endif
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}
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static void AssertFileModeEquals(mode_t expected_mode, const char* filename) {
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struct stat sb;
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ASSERT_EQ(0, stat(filename, &sb));
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mode_t mask = S_IRWXU | S_IRWXG | S_IRWXO;
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ASSERT_EQ(expected_mode & mask, static_cast<mode_t>(sb.st_mode) & mask);
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}
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TEST(sys_stat, fchmodat_file) {
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TemporaryFile tf;
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ASSERT_EQ(0, fchmodat(AT_FDCWD, tf.path, 0751, 0));
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AssertFileModeEquals(0751, tf.path);
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}
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TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_file) {
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TemporaryFile tf;
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errno = 0;
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int result = fchmodat(AT_FDCWD, tf.path, 0751, AT_SYMLINK_NOFOLLOW);
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#if defined(__BIONIC__)
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ASSERT_EQ(0, result);
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ASSERT_EQ(0, errno);
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AssertFileModeEquals(0751, tf.path);
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#else
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// glibc 2.19 does not implement AT_SYMLINK_NOFOLLOW and always
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// returns ENOTSUP
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ASSERT_EQ(-1, result);
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ASSERT_EQ(ENOTSUP, errno);
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#endif
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}
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TEST(sys_stat, fchmodat_symlink) {
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TemporaryFile tf;
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char linkname[255];
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snprintf(linkname, sizeof(linkname), "%s.link", tf.path);
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ASSERT_EQ(0, symlink(tf.path, linkname));
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ASSERT_EQ(0, fchmodat(AT_FDCWD, linkname, 0751, 0));
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AssertFileModeEquals(0751, tf.path);
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unlink(linkname);
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}
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TEST(sys_stat, fchmodat_dangling_symlink) {
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TemporaryFile tf;
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char linkname[255];
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char target[255];
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snprintf(linkname, sizeof(linkname), "%s.link", tf.path);
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snprintf(target, sizeof(target), "%s.doesnotexist", tf.path);
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ASSERT_EQ(0, symlink(target, linkname));
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ASSERT_EQ(-1, fchmodat(AT_FDCWD, linkname, 0751, 0));
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ASSERT_EQ(ENOENT, errno);
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unlink(linkname);
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}
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static void AssertSymlinkModeEquals(mode_t expected_mode, const char* linkname) {
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struct stat sb;
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ASSERT_EQ(0, fstatat(AT_FDCWD, linkname, &sb, AT_SYMLINK_NOFOLLOW));
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mode_t mask = S_IRWXU | S_IRWXG | S_IRWXO;
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ASSERT_EQ(expected_mode & mask, static_cast<mode_t>(sb.st_mode) & mask);
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}
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TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_with_symlink) {
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TemporaryFile tf;
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struct stat tf_sb;
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ASSERT_EQ(0, stat(tf.path, &tf_sb));
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char linkname[255];
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snprintf(linkname, sizeof(linkname), "%s.link", tf.path);
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ASSERT_EQ(0, symlink(tf.path, linkname));
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int result = fchmodat(AT_FDCWD, linkname, 0751, AT_SYMLINK_NOFOLLOW);
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// It depends on the kernel whether chmod operation on symlink is allowed.
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if (result == 0) {
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AssertSymlinkModeEquals(0751, linkname);
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} else {
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ASSERT_EQ(-1, result);
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ASSERT_EQ(ENOTSUP, errno);
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}
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// Target file mode shouldn't be modified.
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AssertFileModeEquals(tf_sb.st_mode, tf.path);
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unlink(linkname);
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}
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TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_with_dangling_symlink) {
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TemporaryFile tf;
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char linkname[255];
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char target[255];
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snprintf(linkname, sizeof(linkname), "%s.link", tf.path);
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snprintf(target, sizeof(target), "%s.doesnotexist", tf.path);
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ASSERT_EQ(0, symlink(target, linkname));
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int result = fchmodat(AT_FDCWD, linkname, 0751, AT_SYMLINK_NOFOLLOW);
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// It depends on the kernel whether chmod operation on symlink is allowed.
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if (result == 0) {
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AssertSymlinkModeEquals(0751, linkname);
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} else {
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ASSERT_EQ(-1, result);
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ASSERT_EQ(ENOTSUP, errno);
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}
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unlink(linkname);
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}
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TEST(sys_stat, faccessat_EINVAL) {
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ASSERT_EQ(-1, faccessat(AT_FDCWD, "/dev/null", F_OK, ~AT_SYMLINK_NOFOLLOW));
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ASSERT_EQ(EINVAL, errno);
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#if defined(__BIONIC__)
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ASSERT_EQ(-1, faccessat(AT_FDCWD, "/dev/null", ~(R_OK | W_OK | X_OK), 0));
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ASSERT_EQ(EINVAL, errno);
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#else
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ASSERT_EQ(0, faccessat(AT_FDCWD, "/dev/null", ~(R_OK | W_OK | X_OK), AT_SYMLINK_NOFOLLOW));
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ASSERT_EQ(-1, faccessat(AT_FDCWD, "/dev/null", ~(R_OK | W_OK | X_OK), 0));
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ASSERT_EQ(EINVAL, errno);
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#endif
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}
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TEST(sys_stat, faccessat_AT_SYMLINK_NOFOLLOW_EINVAL) {
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#if defined(__BIONIC__)
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// Android doesn't support AT_SYMLINK_NOFOLLOW
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ASSERT_EQ(-1, faccessat(AT_FDCWD, "/dev/null", F_OK, AT_SYMLINK_NOFOLLOW));
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ASSERT_EQ(EINVAL, errno);
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#else
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ASSERT_EQ(0, faccessat(AT_FDCWD, "/dev/null", F_OK, AT_SYMLINK_NOFOLLOW));
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#endif
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}
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TEST(sys_stat, faccessat_dev_null) {
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ASSERT_EQ(0, faccessat(AT_FDCWD, "/dev/null", F_OK, 0));
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ASSERT_EQ(0, faccessat(AT_FDCWD, "/dev/null", R_OK, 0));
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ASSERT_EQ(0, faccessat(AT_FDCWD, "/dev/null", W_OK, 0));
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ASSERT_EQ(0, faccessat(AT_FDCWD, "/dev/null", R_OK|W_OK, 0));
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}
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TEST(sys_stat, faccessat_nonexistant) {
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ASSERT_EQ(-1, faccessat(AT_FDCWD, "/blah", F_OK, AT_SYMLINK_NOFOLLOW));
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#if defined(__BIONIC__)
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// Android doesn't support AT_SYMLINK_NOFOLLOW
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ASSERT_EQ(EINVAL, errno);
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#else
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ASSERT_EQ(ENOENT, errno);
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#endif
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}
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