1 /* $OpenBSD: realpath.c,v 1.28 2023/05/18 16:11:10 guenther Exp $ */
2 /*
3 * Copyright (c) 2019 Bob Beck <beck@openbsd.org>
4 * Copyright (c) 2019 Theo de Raadt <deraadt@openbsd.org>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
13 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
15 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
16 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <errno.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <unistd.h>
23 #include <limits.h>
24 #include <syslog.h>
25 #include <stdarg.h>
26
27 /*
28 * wrapper for kernel __realpath
29 */
30
31 char *
realpath(const char * path,char * resolved)32 realpath(const char *path, char *resolved)
33 {
34 char rbuf[PATH_MAX];
35
36 if (__realpath(path, rbuf) == -1)
37 return NULL;
38 if (resolved == NULL)
39 return (strdup(rbuf));
40 strlcpy(resolved, rbuf, PATH_MAX);
41 return (resolved);
42 }
43