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 
tmpnam(char * buf)11 char *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_lstat
20 		r = __syscall(SYS_lstat, s, &(struct stat){0});
21 #else
22 		r = __syscall(SYS_fstatat, AT_FDCWD, s,
23 			&(struct stat){0}, AT_SYMLINK_NOFOLLOW);
24 #endif
25 		if (r == -ENOENT) return strcpy(buf ? buf : internal, s);
26 	}
27 	return 0;
28 }
29