1/*
2 * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24#include <sys/cdefs.h>
25
26#if __DARWIN_UNIX03
27
28#include <sys/types.h>
29#include <sys/stat.h>
30#include "_errno.h"
31
32extern int __chmod(const char *path, mode_t mode);
33
34/*
35 * chmod stub, ignore S_ISUID and/or S_ISGID on EPERM,
36 * mandated for conformance.
37 *
38 * This is for UNIX03 only.
39 */
40int
41chmod(const char *path, mode_t mode)
42{
43	int res = __chmod(path, mode);
44
45	if (res >= 0 || errno != EPERM || (mode & (S_ISUID | S_ISGID)) == 0)
46		return res;
47	if (mode & S_ISGID) {
48		res = __chmod(path, mode ^ S_ISGID);
49		if (res >= 0 || errno != EPERM)
50			return res;
51	}
52	if (mode & S_ISUID) {
53		res = __chmod(path, mode ^ S_ISUID);
54		if (res >= 0 || errno != EPERM)
55			return res;
56	}
57	if ((mode & (S_ISUID | S_ISGID)) == (S_ISUID | S_ISGID))
58		res = __chmod(path, mode ^ (S_ISUID | S_ISGID));
59	return res;
60}
61
62#endif /* __DARWIN_UNIX03 */
63