/* Copyright (C) 2000-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <unistd.h>

#include <stdlib.h>

#include <string.h>

#include "spawn_int.h"

/* Add an action to FILE-ACTIONS which tells the implementation to call

   `open' for the given file during the `spawn' call.  */

int

posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *file_actions,

				  int fd, const char *path, int oflag,

				  mode_t mode)

{

  struct __spawn_action *rec;

  if (!__spawn_valid_fd (fd))

    return EBADF;

  char *path_copy = __strdup (path);

  if (path_copy == NULL)

    return ENOMEM;

  /* Allocate more memory if needed.  */

  if (file_actions->__used == file_actions->__allocated

      && __posix_spawn_file_actions_realloc (file_actions) != 0)

    {

      /* This can only mean we ran out of memory.  */

      free (path_copy);

      return ENOMEM;

    }

  /* Add the new value.  */

  rec = &file_actions->__actions[file_actions->__used];

  rec->tag = spawn_do_open;

  rec->action.open_action.fd = fd;

  rec->action.open_action.path = path_copy;

  rec->action.open_action.oflag = oflag;

  rec->action.open_action.mode = mode;

  /* Account for the new entry.  */

  ++file_actions->__used;

  return 0;

}