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