summaryrefslogtreecommitdiff
path: root/src/temp/mkstemp.c
blob: 2ab3020b3e3c2768a7c4abbd2f64415999e53807 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include "libc.h"

char *__mktemp(char *);

int mkstemp(char *template)
{
	int fd, retries = 100;
	while (retries--) {
		if (!__mktemp(template)) return 0;
		if ((fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600))>=0)
			return fd;
		if (errno != EEXIST) return -1;
		/* this is safe because mktemp verified
		 * that we have a valid template string */
		strcpy(template+strlen(template)-6, "XXXXXX");
	}
	return -1;
}

LFS64(mkstemp);