librt/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 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    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <spawn.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include "spawn_int.h"
  24
  25
  26 /* Function used to increase the size of the allocated array.  This
  27    function is called from the `add'-functions.  */
  28 int
  29 __posix_spawn_file_actions_realloc(posix_spawn_file_actions_t *file_actions)
  30 {
  31         int newalloc = file_actions->__allocated + 8;
  32         void *newmem = realloc(file_actions->__actions,
  33                                newalloc * sizeof(struct __spawn_action));
  34
  35         if (newmem == NULL)
  36                 /* Not enough memory.  */
  37                 return ENOMEM;
  38
  39         file_actions->__actions = (struct __spawn_action *)newmem;
  40         file_actions->__allocated = newalloc;
  41         return 0;
  42 }