1 /* On some systems, mkdir ("foo/", 0700) fails because of the trailing
2 slash. On those systems, this wrapper removes the trailing slash.
3
4 Copyright (C) 2001, 2003, 2006, 2008-2021 Free Software Foundation, Inc.
5
6 This file is free software: you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
10
11 This file is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with this program. If not, see <https://www.gnu.org/licenses/>. */
18
19 /* written by Jim Meyering */
20
21 #include <config.h>
22
23 /* Specification. */
24 #include <sys/stat.h>
25
26 #include <errno.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #include "dirname.h"
32
33 /* Disable the definition of mkdir to rpl_mkdir (from the <sys/stat.h>
34 substitute) in this file. Otherwise, we'd get an endless recursion. */
35 #undef mkdir
36
37 /* mingw's _mkdir() function has 1 argument, but we pass 2 arguments.
38 Additionally, it declares _mkdir (and depending on compile flags, an
39 alias mkdir), only in the nonstandard includes <direct.h> and <io.h>,
40 which are included in the <sys/stat.h> override. */
41 #if defined _WIN32 && ! defined __CYGWIN__
42 # define mkdir(name,mode) _mkdir (name)
43 # define maybe_unused _GL_UNUSED
44 #else
45 # define maybe_unused /* empty */
46 #endif
47
48 /* This function is required at least for NetBSD 1.5.2. */
49
50 int
rpl_mkdir(char const * dir,maybe_unused mode_t mode)51 rpl_mkdir (char const *dir, maybe_unused mode_t mode)
52 {
53 int ret_val;
54 char *tmp_dir;
55 size_t len = strlen (dir);
56
57 if (len && dir[len - 1] == '/')
58 {
59 tmp_dir = strdup (dir);
60 if (!tmp_dir)
61 {
62 /* Rather than rely on strdup-posix, we set errno ourselves. */
63 errno = ENOMEM;
64 return -1;
65 }
66 strip_trailing_slashes (tmp_dir);
67 }
68 else
69 {
70 tmp_dir = (char *) dir;
71 }
72 #if FUNC_MKDIR_DOT_BUG
73 /* Additionally, cygwin 1.5 mistakenly creates a directory "d/./". */
74 {
75 char *last = last_component (tmp_dir);
76 if (*last == '.' && (last[1] == '\0'
77 || (last[1] == '.' && last[2] == '\0')))
78 {
79 struct stat st;
80 if (stat (tmp_dir, &st) == 0 || errno == EOVERFLOW)
81 errno = EEXIST;
82 return -1;
83 }
84 }
85 #endif /* FUNC_MKDIR_DOT_BUG */
86
87 ret_val = mkdir (tmp_dir, mode);
88
89 if (tmp_dir != dir)
90 free (tmp_dir);
91
92 return ret_val;
93 }
94