+
+/* recursively create the directory named by 'pathname'
+ * (similar to "mkdir -p" on the command line) */
+int rrd_mkdir_p(const char *pathname, mode_t mode)
+{
+ struct stat sb;
+
+ char *pathname_copy;
+ char *base_dir;
+
+ if ((NULL == pathname) || ('\0' == *pathname)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (0 == stat(pathname, &sb)) {
+ if (! S_ISDIR(sb.st_mode)) {
+ errno = ENOTDIR;
+ return -1;
+ }
+ return 0;
+ }
+
+ /* keep errno as set by stat() */
+ if (ENOENT != errno)
+ return -1;
+
+ /* dirname might modify its first argument */
+ if (NULL == (pathname_copy = strdup(pathname)))
+ return -1;
+
+ base_dir = dirname(pathname_copy);
+
+ if (0 != rrd_mkdir_p(base_dir, mode)) {
+ int orig_errno = errno;
+ free(pathname_copy);
+ errno = orig_errno;
+ return -1;
+ }
+
+ free(pathname_copy);
+
+ /* keep errno as set by mkdir() */
+ if (0 != mkdir(pathname, mode))
+ return -1;
+ return 0;
+} /* rrd_mkdir_p */
+