misc/mktemp.c

   1 /* Copyright (C) 1998-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20
  21 /* Generate a unique temporary file name from TEMPLATE.
  22    The last six characters of TEMPLATE must be "XXXXXX";
  23    they are replaced with a string that makes the filename unique.  */
  24 char *
  25 __mktemp (char *template)
  26 {
  27   if (__gen_tempname (template, 0, 0, __GT_NOCREATE) < 0)
  28     /* We return the null string if we can't find a unique file name.  */
  29     template[0] = '\0';
  30
  31   return template;
  32 }
  33 weak_alias (__mktemp, mktemp)
  34
  35 link_warning (mktemp, "the use of `mktemp' is dangerous, "
  36                       "better use `mkstemp' or `mkdtemp'")