lib/mkstemp.c

   1 /* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2020 Free Software
   2    Foundation, Inc.
   3    This file is derived from the one in the GNU C Library.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #if !_LIBC
  19 # include <config.h>
  20 #endif
  21
  22 #include <stdlib.h>
  23
  24 #if !_LIBC
  25 # include "tempname.h"
  26 # define __gen_tempname gen_tempname
  27 # ifndef __GT_FILE
  28 #  define __GT_FILE GT_FILE
  29 # endif
  30 #endif
  31
  32 #include <stdio.h>
  33
  34 #ifndef __GT_FILE
  35 # define __GT_FILE 0
  36 #endif
  37
  38 /* Generate a unique temporary file name from XTEMPLATE.
  39    The last six characters of XTEMPLATE must be "XXXXXX";
  40    they are replaced with a string that makes the file name unique.
  41    Then open the file and return a fd.
  42
  43    If you are creating temporary files which will later be removed,
  44    consider using the clean-temp module, which avoids several pitfalls
  45    of using mkstemp directly. */
  46 int
  47 mkstemp (char *xtemplate)
  48 {
  49   return __gen_tempname (xtemplate, 0, 0, __GT_FILE);
  50 }