1 /* $NetBSD: lchflags.c,v 1.4 2008/04/28 20:24:12 martin Exp $ */
2
3 /*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Luke Mewburn.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /* Emulate lchflags(2), checking path with lstat(2) first to ensure that
33 * it's not a symlink, and then call chflags(2) */
34
35 #if !defined(__minix) && !defined(_LIBC)
36 #include "nbtool_config.h"
37 #else
38 #define HAVE_STRUCT_STAT_ST_FLAGS 1
39 #endif /* !defined(__minix) && !defined(_LIBC) */
40
41 #if !HAVE_LCHFLAGS && HAVE_STRUCT_STAT_ST_FLAGS
42 #include <sys/stat.h>
43 #include <errno.h>
44 #include <unistd.h>
45
46 int
lchflags(const char * path,u_long flags)47 lchflags(const char *path, u_long flags)
48 {
49 struct stat psb;
50
51 if (lstat(path, &psb) == -1)
52 return -1;
53 if (S_ISLNK(psb.st_mode)) {
54 return 0;
55 }
56 #if defined(__minix)
57 return 0;
58 #else
59 return (chflags(path, flags));
60 #endif /* defined(__minix) */
61 }
62 #endif
63