1/*
2 * Check decoding of fchownat syscall.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "tests.h"
31#include <asm/unistd.h>
32#include <fcntl.h>
33
34#if defined __NR_fchownat && defined AT_FDCWD && defined AT_SYMLINK_NOFOLLOW
35
36# include <stdio.h>
37# include <unistd.h>
38
39int
40main(void)
41{
42	static const char sample[] = "fchownat_sample";
43	uid_t uid = geteuid();
44	uid_t gid = getegid();
45
46	if (open(sample, O_RDONLY | O_CREAT, 0400) == -1)
47		perror_msg_and_fail("open");
48
49	long rc = syscall(__NR_fchownat, AT_FDCWD, sample, uid, gid, 0);
50	printf("fchownat(AT_FDCWD, \"%s\", %d, %d, 0) = %s\n",
51	       sample, uid, gid, sprintrc(rc));
52
53	if (unlink(sample))
54		perror_msg_and_fail("unlink");
55
56	rc = syscall(__NR_fchownat, AT_FDCWD,
57		     sample, -1, -1L, AT_SYMLINK_NOFOLLOW);
58	printf("fchownat(AT_FDCWD, \"%s\", -1, -1, AT_SYMLINK_NOFOLLOW) = %s\n",
59	       sample, sprintrc(rc));
60
61	puts("+++ exited with 0 +++");
62	return 0;
63}
64
65#else
66
67SKIP_MAIN_UNDEFINED("__NR_fchownat && AT_FDCWD && AT_SYMLINK_NOFOLLOW")
68
69#endif
70