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 <unistd.h>
20#include <stdlib.h>
21#include <string.h>
22
23#include "spawn_int.h"
24
25/* Add an action to FILE-ACTIONS which tells the implementation to call
26 `open' for the given file during the `spawn' call. */
27int
28__posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *file_actions,
29 int fd, const char *path, int oflag,
30 mode_t mode)
31{
32 struct __spawn_action *rec;
33
34 if (!__spawn_valid_fd (fd))
35 return EBADF;
36
37 char *path_copy = __strdup (path);
38 if (path_copy == NULL)
39 return ENOMEM;
40
41 /* Allocate more memory if needed. */
42 if (file_actions->__used == file_actions->__allocated
43 && __posix_spawn_file_actions_realloc (file_actions) != 0)
44 {
45 /* This can only mean we ran out of memory. */
46 free (path_copy);
47 return ENOMEM;
48 }
49
50 /* Add the new value. */
51 rec = &file_actions->__actions[file_actions->__used];
52 rec->tag = spawn_do_open;
53 rec->action.open_action.fd = fd;
54 rec->action.open_action.path = path_copy;
55 rec->action.open_action.oflag = oflag;
56 rec->action.open_action.mode = mode;
57
58 /* Account for the new entry. */
59 ++file_actions->__used;
60
61 return 0;
62}
63weak_alias (__posix_spawn_file_actions_addopen,
64 posix_spawn_file_actions_addopen)
65