#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"
+char *__randname(char *);
+
char *__mktemp(char *template)
{
- struct timespec ts;
size_t l = strlen(template);
int retries = 10000;
- unsigned long r;
- if (l < 6 || strcmp(template+l-6, "XXXXXX")) {
+ if (l < 6 || memcmp(template+l-6, "XXXXXX", 6)) {
errno = EINVAL;
*template = 0;
return template;
}
- 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);
+ __randname(template+l-6);
if (access(template, F_OK) < 0) return template;
- r = r * 1103515245 + 12345;
}
*template = 0;
errno = EEXIST;