zig/lib/libc/musl/src/temp/mktemp.c
Andrew Kelley 49d1a4c562 move lib dirs to lib subdir
also start prefering NtDll API. so far:
 * NtQueryInformationFile
 * NtClose

adds a performance workaround for windows unicode conversion. but that
should probably be removed before merging
2019-07-15 17:54:50 -04:00

30 lines
512 B
C

#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;
}