xref: /netbsd/sbin/mount/pathadj.c (revision 6550d01e)
1 /*	$NetBSD: pathadj.c,v 1.1 2008/08/05 20:57:45 pooka Exp $	*/
2 
3 /*
4  * Copyright (c) 2008 The NetBSD Foundation.  All Rights Reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 #include <sys/param.h>
29 
30 #include <err.h>
31 #include <stdlib.h>
32 #include <string.h>
33 
34 #include "mountprog.h"
35 
36 void
37 pathadj(const char *input, char *adjusted)
38 {
39 
40 	if (realpath(input, adjusted) == NULL)
41 		err(1, "realpath %s", input);
42 	if (strncmp(input, adjusted, MAXPATHLEN)) {
43 		warnx("\"%s\" is a non-resolved or relative path.", input);
44 		warnx("using \"%s\" instead.", adjusted);
45 	}
46 }
47