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 #include "kstat.h"
9 
10 #define MAXTRIES 100
11 
tmpnam(char * buf)12 char *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 kstat){0});
22 #else
23 		r = __syscall(SYS_fstatat, AT_FDCWD, s,
24 			&(struct kstat){0}, AT_SYMLINK_NOFOLLOW);
25 #endif
26 		if (r == -ENOENT) return strcpy(buf ? buf : internal, s);
27 	}
28 	return 0;
29 }
30