1/* Copyright (C) 2000-2020 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 <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. */
28int
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
42 return 0;
43}
44
45
46/* Initialize data structure for file attribute for `spawn' call. */
47int
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}
54weak_alias (__posix_spawn_file_actions_init, posix_spawn_file_actions_init)
55