#include <string.h>
-#include <stdio.h>
#include <stdlib.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <limits.h>
#include <errno.h>
#include <sys/stat.h>
-#include "libc.h"
-
-char *__mktemp(char *);
char *mkdtemp(char *template)
{
- for (;;) {
- if (!__mktemp(template)) return 0;
- if (!mkdir(template, 0700)) return template;
- if (errno != EEXIST) return 0;
- /* this is safe because mktemp verified
- * that we have a valid template string */
- strcpy(template+strlen(template)-6, "XXXXXX");
+ size_t l = strlen(template);
+ int retries = 100;
+
+ if (l<6 || memcmp(template+l-6, "XXXXXX", 6)) {
+ errno = EINVAL;
+ return 0;
}
+
+ do {
+ __randname(template+l-6);
+ if (!mkdir(template, 0700)) return template;
+ } while (--retries && errno == EEXIST);
+
+ memcpy(template+l-6, "XXXXXX", 6);
+ return 0;
}