1  /* Add a directory change to a file action list for posix_spawn.
       2     Copyright (C) 2000-2023 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  #include <stdlib.h>
      23  #include "spawn_int.h"
      24  
      25  int
      26  posix_spawn_file_actions_addchdir_np (posix_spawn_file_actions_t *file_actions,
      27                                        const char *path)
      28  {
      29    struct __spawn_action *rec;
      30  
      31    char *path_copy = __strdup (path);
      32    if (path_copy == NULL)
      33      return ENOMEM;
      34  
      35    /* Allocate more memory if needed.  */
      36    if (file_actions->__used == file_actions->__allocated
      37        && __posix_spawn_file_actions_realloc (file_actions) != 0)
      38      {
      39        /* This can only mean we ran out of memory.  */
      40        free (path_copy);
      41        return ENOMEM;
      42      }
      43  
      44    /* Add the new value.  */
      45    rec = &file_actions->__actions[file_actions->__used];
      46    rec->tag = spawn_do_chdir;
      47    rec->action.chdir_action.path = path_copy;
      48  
      49    /* Account for the new entry.  */
      50    ++file_actions->__used;
      51  
      52    return 0;
      53  }