1/* Add a directory change to a file action list for posix_spawn.
2 Copyright (C) 2000-2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <spawn.h>
21#include <string.h>
22
23#include "spawn_int.h"
24
25int
26posix_spawn_file_actions_addfchdir_np (posix_spawn_file_actions_t *actions,
27 int fd)
28{
29 struct __spawn_action *rec;
30
31 /* Allocate more memory if needed. */
32 if (actions->__used == actions->__allocated
33 && __posix_spawn_file_actions_realloc (actions) != 0)
34 /* This can only mean we ran out of memory. */
35 return ENOMEM;
36
37 /* Add the new value. */
38 rec = &actions->__actions[actions->__used];
39 rec->tag = spawn_do_fchdir;
40 rec->action.fchdir_action.fd = fd;
41
42 /* Account for the new entry. */
43 ++actions->__used;
44
45 return 0;
46}
47