/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>

   and Paul Janzen <pcj@primenet.com>, 1996.

   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 <libc-lock.h>

#include <errno.h>

#include <stdlib.h>

#include <utmp.h>

#include "utmp-private.h"

/* We have to use the lock in getutent_r.c.  */

__libc_lock_define (extern, __libc_utmp_lock attribute_hidden)

int

__getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)

{

  int retval;

  /* Test whether ID has any of the legal types.  */

  if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME

      && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME

      && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS

      && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)

    /* No, using '<' and '>' for the test is not possible.  */

    {

      __set_errno (EINVAL);

      *result = NULL;

      return -1;

    }

  __libc_lock_lock (__libc_utmp_lock);

  retval = __libc_getutid_r (id, buffer, result);

  __libc_lock_unlock (__libc_utmp_lock);

  return retval;

}

libc_hidden_def (__getutid_r)

weak_alias (__getutid_r, getutid_r)