1#include <stdio.h>
2#include <fcntl.h>
3#include <errno.h>
4#include <sys/stat.h>
5#include <string.h>
6#include "syscall.h"
7
8#define MAXTRIES 100
9
10char *__randname(char *);
11
12char *tmpnam(char *buf)
13{
14	static char internal[L_tmpnam];
15	char s[] = "/tmp/tmpnam_XXXXXX";
16	int try;
17	int r;
18	for (try=0; try<MAXTRIES; try++) {
19		__randname(s+12);
20#ifdef SYS_lstat
21		r = __syscall(SYS_lstat, s, &(struct stat){0});
22#else
23		r = __syscall(SYS_fstatat, AT_FDCWD, s,
24			&(struct stat){0}, AT_SYMLINK_NOFOLLOW);
25#endif
26		if (r == -ENOENT) return strcpy(buf ? buf : internal, s);
27	}
28	return 0;
29}
30