| /* Copyright (C) 1991, 1993, 1996, 1997 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <errno.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| |
| /* Generate a unique temporary filename using up to five characters of PFX |
| if it is not NULL. The directory to put this file in is searched for |
| as follows: First the environment variable "TMPDIR" is checked. |
| If it contains the name of a writable directory, that directory is used. |
| If not and if DIR is not NULL, that value is checked. If that fails, |
| P_tmpdir is tried and finally "/tmp". The storage for the filename |
| is allocated by `malloc'. */ |
| char * |
| tempnam (const char *dir, const char *pfx) |
| { |
| char buf[FILENAME_MAX]; |
| size_t len; |
| char *s; |
| char *t = __stdio_gen_tempname (buf, sizeof (buf), dir, pfx, 1, |
| &len, (FILE **) NULL); |
| |
| if (t == NULL) |
| return NULL; |
| |
| s = (char *) malloc (len); |
| if (s == NULL) |
| return NULL; |
| |
| return (char *) memcpy (s, t, len); |
| } |