xref: /freebsd/usr.bin/patch/mkpath.c (revision 3496c981ac86b0541bdbc9a211f7847a97df008d)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1983, 1992, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  * $OpenBSD: mkpath.c,v 1.2 2005/06/20 07:14:06 otto Exp $
32  * $FreeBSD$
33  */
34 
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <err.h>
38 #include <errno.h>
39 #include <string.h>
40 
41 int	mkpath(char *);
42 
43 /* Code taken directly from mkdir(1).
44 
45  * mkpath -- create directories.
46  *	path     - path
47  */
48 int
49 mkpath(char *path)
50 {
51 	struct stat sb;
52 	char *slash;
53 	int done = 0;
54 
55 	slash = path;
56 
57 	while (!done) {
58 		slash += strspn(slash, "/");
59 		slash += strcspn(slash, "/");
60 
61 		done = (*slash == '\0');
62 		*slash = '\0';
63 
64 		if (stat(path, &sb)) {
65 			if (errno != ENOENT || (mkdir(path, 0777) &&
66 			    errno != EEXIST)) {
67 				warn("%s", path);
68 				return (-1);
69 			}
70 		} else if (!S_ISDIR(sb.st_mode)) {
71 			warnx("%s: %s", path, strerror(ENOTDIR));
72 			return (-1);
73 		}
74 
75 		*slash = '/';
76 	}
77 
78 	return (0);
79 }
80 
81