| /* 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 <stdio.h> |
| #include <string.h> |
| |
| |
| /* Generate a unique filename in P_tmpdir. |
| |
| This function is *not* thread safe! */ |
| char * |
| tmpnam (char *s) |
| { |
| /* By using two buffers we manage to be thread safe in the case |
| where S != NULL. */ |
| static char buf[L_tmpnam]; |
| char tmpbuf[L_tmpnam]; |
| char *result; |
| |
| /* In the following call we use the buffer pointed to by S if |
| non-NULL although we don't know the size. But we limit the size |
| to FILENAME_MAX characters in any case. */ |
| result = __stdio_gen_tempname (s ?: tmpbuf, L_tmpnam, (const char *) NULL, |
| (const char *) NULL, 0, |
| (size_t *) NULL, (FILE **) NULL); |
| |
| if (result != NULL && s == NULL) |
| { |
| memcpy (buf, result, L_tmpnam); |
| result = buf; |
| } |
| |
| return result; |
| } |