1/* Error-checking replacement for "mkdir -p".
2 Copyright (C) 2018-2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <support/support.h>
20#include <support/check.h>
21#include <support/xunistd.h>
22
23#include <stdlib.h>
24#include <string.h>
25#include <errno.h>
26
27/* Equivalent of "mkdir -p". Any failures cause FAIL_EXIT1 so no
28 return code is needed. */
29
30void
31xmkdirp (const char *path, mode_t mode)
32{
33 struct stat s;
34 const char *slash_p;
35 int rv;
36
37 if (path[0] == 0)
38 return;
39
40 if (stat (path, &s) == 0)
41 {
42 if (S_ISDIR (s.st_mode))
43 return;
44 errno = EEXIST;
45 FAIL_EXIT1 ("mkdir_p (\"%s\", 0%o): %m", path, mode);
46 }
47
48 slash_p = strrchr (path, '/');
49 if (slash_p != NULL)
50 {
51 while (slash_p > path && slash_p[-1] == '/')
52 --slash_p;
53 if (slash_p > path)
54 {
55 char *parent = xstrndup (path, slash_p - path);
56 xmkdirp (parent, mode);
57 free (parent);
58 }
59 }
60
61 rv = mkdir (path, mode);
62 if (rv != 0)
63 FAIL_EXIT1 ("mkdir_p (\"%s\", 0%o): %m", path, mode);
64
65 return;
66}
67