1 /* $OpenBSD: mkpath.c,v 1.5 2021/05/17 11:52:10 claudio Exp $ */
2 /*
3 * Copyright (c) 1983, 1992, 1993
4 * The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/types.h>
32 #include <sys/stat.h>
33 #include <errno.h>
34 #include <stdint.h>
35 #include <string.h>
36
37 #include "extern.h"
38
39 /* Code taken directly from mkdir(1).
40
41 * mkpath -- create directories.
42 * path - path
43 */
44 int
mkpath(char * path)45 mkpath(char *path)
46 {
47 struct stat sb;
48 char *slash;
49 int done;
50
51 slash = path;
52
53 for (;;) {
54 slash += strspn(slash, "/");
55 slash += strcspn(slash, "/");
56
57 done = (*slash == '\0');
58 *slash = '\0';
59
60 if (mkdir(path, 0777) != 0) {
61 int mkdir_errno = errno;
62
63 if (stat(path, &sb) == -1) {
64 /* Not there; use mkdir()s errno */
65 errno = mkdir_errno;
66 return (-1);
67 }
68 if (!S_ISDIR(sb.st_mode)) {
69 /* Is there, but isn't a directory */
70 errno = ENOTDIR;
71 return (-1);
72 }
73 }
74
75 if (done)
76 break;
77
78 *slash = '/';
79 }
80
81 return (0);
82 }
83