1 /* Copyright (C) 2018-2021 Free Software Foundation, Inc. 2 3 This program is free software: you can redistribute it and/or modify 4 it under the terms of the GNU General Public License as published by 5 the Free Software Foundation; either version 3 of the License, or 6 (at your option) any later version. 7 8 This program is distributed in the hope that it will be useful, 9 but WITHOUT ANY WARRANTY; without even the implied warranty of 10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License 14 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 15 16 #include <config.h> 17 18 /* Specification. */ 19 #include <spawn.h> 20 21 #include <errno.h> 22 #include <stdlib.h> 23 #include <string.h> 24 25 #if REPLACE_POSIX_SPAWN 26 # include "spawn_int.h" 27 #endif 28 29 /* Add an action to FILE-ACTIONS which tells the implementation to call 30 'chdir' to the given directory during the 'spawn' call. */ 31 int posix_spawn_file_actions_addchdir(posix_spawn_file_actions_t * file_actions,const char * path)32posix_spawn_file_actions_addchdir (posix_spawn_file_actions_t *file_actions, 33 const char *path) 34 #undef posix_spawn_file_actions_addchdir 35 { 36 #if !REPLACE_POSIX_SPAWN 37 return posix_spawn_file_actions_addchdir_np (file_actions, path); 38 #else 39 { 40 /* Copy PATH, because the caller may free it before calling posix_spawn() 41 or posix_spawnp(). */ 42 char *path_copy = strdup (path); 43 if (path_copy == NULL) 44 return ENOMEM; 45 46 /* Allocate more memory if needed. */ 47 if (file_actions->_used == file_actions->_allocated 48 && __posix_spawn_file_actions_realloc (file_actions) != 0) 49 { 50 /* This can only mean we ran out of memory. */ 51 free (path_copy); 52 return ENOMEM; 53 } 54 55 { 56 struct __spawn_action *rec; 57 58 /* Add the new value. */ 59 rec = &file_actions->_actions[file_actions->_used]; 60 rec->tag = spawn_do_chdir; 61 rec->action.chdir_action.path = path_copy; 62 63 /* Account for the new entry. */ 64 ++file_actions->_used; 65 66 return 0; 67 } 68 } 69 #endif 70 } 71