+#define _GNU_SOURCE
#include <string.h>
-#include <stdio.h>
#include <stdlib.h>
-#include <fcntl.h>
-#include <unistd.h>
#include <errno.h>
-#include "libc.h"
+#include <sys/stat.h>
-char *__mktemp(char *template)
+char *mktemp(char *template)
{
- static int lock;
- static int index;
- int l = strlen(template);
+ size_t l = strlen(template);
+ int retries = 100;
+ struct stat st;
- if (l < 6 || strcmp(template+l-6, "XXXXXX")) {
+ if (l < 6 || memcmp(template+l-6, "XXXXXX", 6)) {
errno = EINVAL;
- return NULL;
+ *template = 0;
+ return template;
}
- LOCK(&lock);
- for (; index < 1000000; index++) {
- snprintf(template+l-6, 6, "%06d", index);
- if (access(template, F_OK) != 0) {
- UNLOCK(&lock);
+
+ do {
+ __randname(template+l-6);
+ if (stat(template, &st)) {
+ if (errno != ENOENT) *template = 0;
return template;
}
- }
- UNLOCK(&lock);
- return NULL;
-}
+ } while (--retries);
-weak_alias(__mktemp, mktemp);
+ *template = 0;
+ errno = EEXIST;
+ return template;
+}