1 /* Copyright (C) 2000-2022 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. */ 28 int __posix_spawn_file_actions_realloc(posix_spawn_file_actions_t * file_actions)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. */ 47 int __posix_spawn_file_actions_init(posix_spawn_file_actions_t * file_actions)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 } 54 weak_alias (__posix_spawn_file_actions_init, posix_spawn_file_actions_init) 55