1 /* $OpenBSD: mkdir.c,v 1.8 2022/04/04 16:02:54 claudio Exp $ */
2
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
32 #include <sys/stat.h>
33
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include "extern.h"
40
41 /*
42 * mkpath -- create directories.
43 * fd - file descriptor to base dir or AT_FDCWD
44 * dir - path to create directories for
45 */
46 int
mkpathat(int fd,const char * dir)47 mkpathat(int fd, const char *dir)
48 {
49 char *path, *slash;
50 int done;
51
52 if ((path = strdup(dir)) == NULL)
53 return -1;
54
55 slash = path;
56
57 for (;;) {
58 slash += strspn(slash, "/");
59 slash += strcspn(slash, "/");
60
61 done = (*slash == '\0');
62 *slash = '\0';
63
64 if (mkdirat(fd, path, 0755) == -1 && errno != EEXIST) {
65 free(path);
66 return -1;
67 }
68
69 if (done)
70 break;
71
72 *slash = '/';
73 }
74
75 free(path);
76 return 0;
77 }
78
79 int
mkpath(const char * dir)80 mkpath(const char *dir)
81 {
82 return mkpathat(AT_FDCWD, dir);
83 }
84