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/* Test changing the protections of a file relative to an open directory.
Copyright (C) 2011-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include <sys/stat.h>
#include "signature.h"
SIGNATURE_CHECK (fchmodat, int, (int, const char *, mode_t, int));
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include "macros.h"
#define BASE "test-fchmodat."
int
main (void)
{
/* Test behaviour for invalid file descriptors. */
{
errno = 0;
ASSERT (fchmodat (-1, "foo", 0600, 0) == -1);
ASSERT (errno == EBADF);
}
{
close (99);
errno = 0;
ASSERT (fchmodat (99, "foo", 0600, 0) == -1);
ASSERT (errno == EBADF);
}
/* Test that fchmodat works on regular files. */
{
struct stat statbuf;
unlink (BASE "file");
ASSERT (close (creat (BASE "file", 0600)) == 0);
ASSERT (fchmodat (AT_FDCWD, BASE "file", 0400, 0) == 0);
ASSERT (stat (BASE "file", &statbuf) >= 0);
ASSERT ((statbuf.st_mode & 0700) == 0400);
errno = 0;
ASSERT (fchmodat (AT_FDCWD, BASE "file/", 0600, 0) == -1);
ASSERT (errno == ENOTDIR);
/* Clean up. */
ASSERT (chmod (BASE "file", 0600) == 0);
ASSERT (unlink (BASE "file") == 0);
}
/* Test that fchmodat works on directories. */
{
struct stat statbuf;
rmdir (BASE "dir");
ASSERT (mkdir (BASE "dir", 0700) == 0);
ASSERT (fchmodat (AT_FDCWD, BASE "dir", 0500, 0) == 0);
ASSERT (stat (BASE "dir", &statbuf) >= 0);
ASSERT ((statbuf.st_mode & 0700) == 0500);
ASSERT (fchmodat (AT_FDCWD, BASE "dir/", 0700, 0) == 0);
/* Clean up. */
ASSERT (rmdir (BASE "dir") == 0);
}
/* Test that fchmodat works on non-symlinks, when given
the AT_SYMLINK_NOFOLLOW flag. */
{
struct stat statbuf;
unlink (BASE "file");
ASSERT (close (creat (BASE "file", 0600)) == 0);
ASSERT (fchmodat (AT_FDCWD, BASE "file", 0400, AT_SYMLINK_NOFOLLOW) == 0);
ASSERT (stat (BASE "file", &statbuf) >= 0);
ASSERT ((statbuf.st_mode & 0700) == 0400);
/* Clean up. */
ASSERT (chmod (BASE "file", 0600) == 0);
ASSERT (unlink (BASE "file") == 0);
}
return 0;
}
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