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/*
* Check decoding of fchownat syscall.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <sys/syscall.h>
#include <fcntl.h>
#if defined __NR_fchownat && defined AT_FDCWD && defined AT_SYMLINK_NOFOLLOW
# include <stdio.h>
# include <unistd.h>
int
main(void)
{
static const char sample[] = "fchownat_sample";
uid_t uid = geteuid();
uid_t gid = getegid();
if (open(sample, O_RDONLY | O_CREAT, 0400) == -1)
perror_msg_and_fail("open");
long rc = syscall(__NR_fchownat, AT_FDCWD, sample, uid, gid, 0);
if (rc == 0) {
printf("fchownat(AT_FDCWD, \"%s\", %d, %d, 0) = 0\n",
sample, uid, gid);
if (unlink(sample))
perror_msg_and_fail("unlink");
rc = syscall(__NR_fchownat, AT_FDCWD,
sample, -1, -1L, AT_SYMLINK_NOFOLLOW);
printf("fchownat(AT_FDCWD, \"%s\", -1, -1, AT_SYMLINK_NOFOLLOW)"
" = %ld %s (%m)\n", sample, rc, errno2name());
} else {
printf("fchownat(AT_FDCWD, \"%s\", %d, %d, 0)"
" = %ld %s (%m)\n", sample, uid, gid, rc, errno2name());
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_fchownat && AT_FDCWD && AT_SYMLINK_NOFOLLOW")
#endif
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