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#define _GNU_SOURCE
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>
char *mktemp(char *template)
{
size_t l = strlen(template);
int retries = 100;
struct stat st;
if (l < 6 || memcmp(template+l-6, "XXXXXX", 6)) {
errno = EINVAL;
*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 template;
}
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