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)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 } 28