/* Set a host configuration item kept as the whole contents of a file.

   Copyright (C) 1996-2018 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 <fcntl.h>

#include <hurd.h>

#include "hurdhost.h"

ssize_t

_hurd_set_host_config (const char *item, const char *value, size_t valuelen)

{

  error_t err;

  mach_msg_type_number_t nwrote;

  file_t new, dir;

  char *name;

  dir = __file_name_split (item, &name);

  if (dir == MACH_PORT_NULL)

    return -1;

  /* Create a new node.  */

  err = __dir_mkfile (dir, O_WRONLY, 0644, &new;;

  if (! err)

    {

      /* Write the contents.  */

      err = __io_write (new, value, valuelen, 0, &nwrote);

      if (! err)

	/* Atomically link the new node onto the name.  */

	err = __dir_link (dir, new, name, 0);

      __mach_port_deallocate (__mach_task_self (), new);

    }

  __mach_port_deallocate (__mach_task_self (), dir);

  return err ? __hurd_fail (err) : nwrote;

}