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comparison lib/spawn_faction_init.c @ 10506:989d25db0548

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New module 'posix_spawn_file_actions_init'.
author Bruno Haible <bruno@clisp.org>
date Sun, 28 Sep 2008 13:42:34 +0200
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children e8d2c6fc33ad
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10505:bb42f3fdba16 10506:989d25db0548
1 /* Copyright (C) 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program 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
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 /* Specification. */
20 #include <spawn.h>
21
22 #include <errno.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #include "spawn_int.h"
27
28
29 /* Function used to increase the size of the allocated array. This
30 function is called from the `add'-functions. */
31 int
32 __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions)
33 {
34 int newalloc = file_actions->_allocated + 8;
35 void *newmem = realloc (file_actions->_actions,
36 newalloc * sizeof (struct __spawn_action));
37
38 if (newmem == NULL)
39 /* Not enough memory. */
40 return ENOMEM;
41
42 file_actions->_actions = (struct __spawn_action *) newmem;
43 file_actions->_allocated = newalloc;
44
45 return 0;
46 }
47
48
49 /* Initialize data structure for file attribute for `spawn' call. */
50 int
51 posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions)
52 {
53 /* Simply clear all the elements. */
54 memset (file_actions, '\0', sizeof (*file_actions));
55 return 0;
56 }