posix/spawn_faction_init.c

   1 /* Copyright (C) 2000 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 Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    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    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <errno.h>
  20 #include <spawn.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24
  25 /* Function used to increase the size of the allocated array.  This
  26    function is called from the `add'-functions.  */
  27 int
  28 __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions)
  29 {
  30   void *newmem = realloc (file_actions->__actions,
  31                           file_actions->__allocated += 8);
  32
  33   if (newmem == NULL)
  34     {
  35       /* Not enough memory.  */
  36       file_actions->__allocated -= 8;
  37       return ENOMEM;
  38     }
  39
  40   file_actions->__actions = (struct __spawn_action *) newmem;
  41
  42   return 0;
  43 }
  44
  45
  46 /* Initialize data structure for file attribute for `spawn' call.  */
  47 int
  48 posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions)
  49 {
  50   /* Simply clear all the elements.  */
  51   memset (file_actions, '\0', sizeof (*file_actions));
  52   return 0;
  53 }