xref: /freebsd/usr.bin/patch/mkpath.c (revision b0b1dbdd)
1 /*-
2  * Copyright (c) 1983, 1992, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $OpenBSD: mkpath.c,v 1.2 2005/06/20 07:14:06 otto Exp $
30  * $FreeBSD$
31  */
32 
33 #include <sys/types.h>
34 #include <sys/stat.h>
35 #include <err.h>
36 #include <errno.h>
37 #include <string.h>
38 
39 int	mkpath(char *);
40 
41 /* Code taken directly from mkdir(1).
42 
43  * mkpath -- create directories.
44  *	path     - path
45  */
46 int
47 mkpath(char *path)
48 {
49 	struct stat sb;
50 	char *slash;
51 	int done = 0;
52 
53 	slash = path;
54 
55 	while (!done) {
56 		slash += strspn(slash, "/");
57 		slash += strcspn(slash, "/");
58 
59 		done = (*slash == '\0');
60 		*slash = '\0';
61 
62 		if (stat(path, &sb)) {
63 			if (errno != ENOENT || (mkdir(path, 0777) &&
64 			    errno != EEXIST)) {
65 				warn("%s", path);
66 				return (-1);
67 			}
68 		} else if (!S_ISDIR(sb.st_mode)) {
69 			warnx("%s: %s", path, strerror(ENOTDIR));
70 			return (-1);
71 		}
72 
73 		*slash = '/';
74 	}
75 
76 	return (0);
77 }
78 
79