| 1 | /* Copyright (C) 2000-2024 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. */ |
| 27 | int |
| 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 (ptr: 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 | } |
| 63 | weak_alias (__posix_spawn_file_actions_addopen, |
| 64 | posix_spawn_file_actions_addopen) |
| 65 |