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+/* On some systems, mkdir ("foo/", 0700) fails because of the trailing
+ slash. On those systems, this wrapper removes the trailing slash.
+
+ Copyright (C) 2001, 2003, 2006, 2008-2022 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+/* Specification. */
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "dirname.h"
+
+/* Disable the definition of mkdir to rpl_mkdir (from the <sys/stat.h>
+ substitute) in this file. Otherwise, we'd get an endless recursion. */
+#undef mkdir
+
+/* mingw's _mkdir() function has 1 argument, but we pass 2 arguments.
+ Additionally, it declares _mkdir (and depending on compile flags, an
+ alias mkdir), only in the nonstandard includes <direct.h> and <io.h>,
+ which are included in the <sys/stat.h> override. */
+#if defined _WIN32 && ! defined __CYGWIN__
+# define mkdir(name,mode) _mkdir (name)
+# define maybe_unused _GL_UNUSED
+#else
+# define maybe_unused /* empty */
+#endif
+
+/* This function is required at least for NetBSD 1.5.2. */
+
+int
+rpl_mkdir (char const *dir, maybe_unused mode_t mode)
+{
+ int ret_val;
+ char *tmp_dir;
+ size_t len = strlen (dir);
+
+ if (len && dir[len - 1] == '/')
+ {
+ tmp_dir = strdup (dir);
+ if (!tmp_dir)
+ {
+ /* Rather than rely on strdup-posix, we set errno ourselves. */
+ errno = ENOMEM;
+ return -1;
+ }
+ strip_trailing_slashes (tmp_dir);
+ }
+ else
+ {
+ tmp_dir = (char *) dir;
+ }
+#if FUNC_MKDIR_DOT_BUG
+ /* Additionally, cygwin 1.5 mistakenly creates a directory "d/./". */
+ {
+ char *last = last_component (tmp_dir);
+ if (*last == '.' && (last[1] == '\0'
+ || (last[1] == '.' && last[2] == '\0')))
+ {
+ struct stat st;
+ if (stat (tmp_dir, &st) == 0 || errno == EOVERFLOW)
+ errno = EEXIST;
+ return -1;
+ }
+ }
+#endif /* FUNC_MKDIR_DOT_BUG */
+
+ ret_val = mkdir (tmp_dir, mode);
+
+ if (tmp_dir != dir)
+ free (tmp_dir);
+
+ return ret_val;
+}