97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/* Test changing the protections of a file relative to an open directory.
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Copyright (C) 2011-2025 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <sys/stat.h>
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#include "signature.h"
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SIGNATURE_CHECK (fchmodat, int, (int, const char *, mode_t, int));
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "macros.h"
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#define BASE "test-fchmodat."
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int
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main (void)
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{
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/* Test behaviour for invalid file descriptors. */
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{
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errno = 0;
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ASSERT (fchmodat (-1, "foo", 0600, 0) == -1);
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ASSERT (errno == EBADF);
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}
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{
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close (99);
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errno = 0;
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ASSERT (fchmodat (99, "foo", 0600, 0) == -1);
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ASSERT (errno == EBADF);
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}
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/* Test that fchmodat works on regular files. */
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{
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struct stat statbuf;
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unlink (BASE "file");
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ASSERT (close (creat (BASE "file", 0600)) == 0);
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ASSERT (fchmodat (AT_FDCWD, BASE "file", 0400, 0) == 0);
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ASSERT (stat (BASE "file", &statbuf) >= 0);
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ASSERT ((statbuf.st_mode & 0700) == 0400);
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errno = 0;
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ASSERT (fchmodat (AT_FDCWD, BASE "file/", 0600, 0) == -1);
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ASSERT (errno == ENOTDIR);
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/* Clean up. */
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ASSERT (chmod (BASE "file", 0600) == 0);
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ASSERT (unlink (BASE "file") == 0);
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}
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/* Test that fchmodat works on directories. */
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{
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struct stat statbuf;
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rmdir (BASE "dir");
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ASSERT (mkdir (BASE "dir", 0700) == 0);
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ASSERT (fchmodat (AT_FDCWD, BASE "dir", 0500, 0) == 0);
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ASSERT (stat (BASE "dir", &statbuf) >= 0);
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ASSERT ((statbuf.st_mode & 0700) == 0500);
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ASSERT (fchmodat (AT_FDCWD, BASE "dir/", 0700, 0) == 0);
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/* Clean up. */
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ASSERT (rmdir (BASE "dir") == 0);
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}
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/* Test that fchmodat works on non-symlinks, when given
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the AT_SYMLINK_NOFOLLOW flag. */
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{
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struct stat statbuf;
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unlink (BASE "file");
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ASSERT (close (creat (BASE "file", 0600)) == 0);
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ASSERT (fchmodat (AT_FDCWD, BASE "file", 0400, AT_SYMLINK_NOFOLLOW) == 0);
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ASSERT (stat (BASE "file", &statbuf) >= 0);
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ASSERT ((statbuf.st_mode & 0700) == 0400);
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/* Clean up. */
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ASSERT (chmod (BASE "file", 0600) == 0);
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ASSERT (unlink (BASE "file") == 0);
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}
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return test_exit_status;
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}
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