char *__mktemp(char *template)
{
struct timespec ts;
- size_t l = strlen(template);
+ size_t i, l = strlen(template);
int retries = 10000;
unsigned long r;
if (l < 6 || strcmp(template+l-6, "XXXXXX")) {
errno = EINVAL;
- return 0;
+ *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);
+ clock_gettime(CLOCK_REALTIME, &ts);
+ r = ts.tv_nsec + (uintptr_t)&ts / 16 + (uintptr_t)template;
+ for (i=1; i<=6; i++, r>>=4)
+ template[l-i] = 'A'+(r&15);
if (access(template, F_OK) < 0) return template;
- r = r * 1103515245 + 12345;
}
+ *template = 0;
errno = EEXIST;
- return 0;
+ return template;
}
weak_alias(__mktemp, mktemp);