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glibc  2.9
spawn_faction_init.c
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00001 /* Copyright (C) 2000 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <spawn.h>
00021 #include <stdlib.h>
00022 #include <string.h>
00023 
00024 #include "spawn_int.h"
00025 
00026 
00027 /* Function used to increase the size of the allocated array.  This
00028    function is called from the `add'-functions.  */
00029 int
00030 __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions)
00031 {
00032   int newalloc = file_actions->__allocated + 8;
00033   void *newmem = realloc (file_actions->__actions,
00034                        newalloc * sizeof (struct __spawn_action));
00035 
00036   if (newmem == NULL)
00037     /* Not enough memory.  */
00038     return ENOMEM;
00039 
00040   file_actions->__actions = (struct __spawn_action *) newmem;
00041   file_actions->__allocated = newalloc;
00042 
00043   return 0;
00044 }
00045 
00046 
00047 /* Initialize data structure for file attribute for `spawn' call.  */
00048 int
00049 posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions)
00050 {
00051   /* Simply clear all the elements.  */
00052   memset (file_actions, '\0', sizeof (*file_actions));
00053   return 0;
00054 }