1#include <stdio.h>
 2#include <fcntl.h>
 3#include <errno.h>
 4#include <sys/stat.h>
 5#include <string.h>
 6#include <stdlib.h>
 7#include "syscall.h"
 8
 9#define MAXTRIES 100
10
11char *tmpnam(char *buf)
12{
13	static char internal[L_tmpnam];
14	char s[] = "/tmp/tmpnam_XXXXXX";
15	int try;
16	int r;
17	for (try=0; try<MAXTRIES; try++) {
18		__randname(s+12);
19#ifdef SYS_readlink
20		r = __syscall(SYS_readlink, s, (char[1]){0}, 1);
21#else
22		r = __syscall(SYS_readlinkat, AT_FDCWD, s, (char[1]){0}, 1);
23#endif
24		if (r == -ENOENT) return strcpy(buf ? buf : internal, s);
25	}
26	return 0;
27}