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/* Copyright (C) 1991,1993,1996-1999,2000 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>

#include "../misc/internals/tempname.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];

  if (__path_search (buf, FILENAME_MAX, dir, pfx, 1))

    return NULL;

  if (__gen_tempname (buf, __GT_NOCREATE))

    return NULL;

  return strdup (buf);

}