1 /*
2 * SysDB - src/utils/os.c
3 * Copyright (C) 2014 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #if HAVE_CONFIG_H
29 # include "config.h"
30 #endif /* HAVE_CONFIG_H */
32 #include "utils/os.h"
34 #include <errno.h>
36 #include <sys/types.h>
37 #include <sys/stat.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
43 #include <libgen.h>
45 /*
46 * private helper functions
47 */
49 /*
50 * Recursively create the directory 'pathname' using the specified 'mode'. If
51 * 'enforce_mode' is true, the mode will be enforced even if the directory
52 * exists already.
53 */
54 static int
55 mkdir_rec(const char *pathname, mode_t mode, _Bool enforce_mode)
56 {
57 struct stat st;
58 char *base_dir;
60 int status = 0;
62 if ((! pathname) || (! *pathname)) {
63 errno = EINVAL;
64 return -1;
65 }
67 memset(&st, 0, sizeof(st));
68 if (! stat(pathname, &st)) {
69 if (! S_ISDIR(st.st_mode)) {
70 errno = ENOTDIR;
71 return -1;
72 }
74 if ((st.st_mode != mode) && enforce_mode)
75 return chmod(pathname, mode);
76 return 0;
77 }
79 if (errno != ENOENT)
80 /* pathname exists but we cannot access it */
81 return -1;
83 base_dir = strdup(pathname);
84 if (! base_dir)
85 return -1;
86 base_dir = dirname(base_dir);
88 /* don't enforce the mode on parent directories */
89 status = mkdir_rec(base_dir, mode, 0);
90 if (! status)
91 status = mkdir(pathname, mode);
93 free(base_dir);
94 return status;
95 } /* mkdir_rec */
97 /*
98 * public API
99 */
101 int
102 sdb_mkdir_all(const char *pathname, mode_t mode)
103 {
104 return mkdir_rec(pathname, mode, 1);
105 } /* sdb_mkdir_all */
107 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */