+#define _GNU_SOURCE
#include <string.h>
-#include <stdio.h>
#include <stdlib.h>
-#include <fcntl.h>
-#include <unistd.h>
#include <errno.h>
-#include <time.h>
-#include <stdint.h>
-#include "libc.h"
+#include <sys/stat.h>
-char *__mktemp(char *template)
+char *__randname(char *);
+
+char *mktemp(char *template)
{
- struct timespec ts;
size_t l = strlen(template);
- int retries = 10000;
- unsigned long r;
+ 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 0;
- }
- clock_gettime(CLOCK_REALTIME, &ts);
- r = ts.tv_nsec + (uintptr_t)&ts / 16 + (uintptr_t)template;
- while (retries--) {
- snprintf(template+l-6, 7, "%06lX", r & 0xffffff);
- if (access(template, F_OK) < 0) return template;
- r = r * 1103515245 + 12345;
+ *template = 0;
+ return template;
}
+
+ do {
+ __randname(template+l-6);
+ if (stat(template, &st)) {
+ if (errno != ENOENT) *template = 0;
+ return template;
+ }
+ } while (--retries);
+
+ *template = 0;
errno = EEXIST;
- return 0;
+ return template;
}
-
-weak_alias(__mktemp, mktemp);