/* Helper function for utmp functions to see if two entries are equal.

   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 <string.h>

#include <utmp.h>

#include "utmp-private.h"

/* Test whether two entries match.  */

static int

__utmp_equal (const struct utmp *entry, const struct utmp *match)

{

  return

    (

#if _HAVE_UT_TYPE - 0

     (entry->ut_type == INIT_PROCESS

      || entry->ut_type == LOGIN_PROCESS

      || entry->ut_type == USER_PROCESS

      || entry->ut_type == DEAD_PROCESS)

     &&

     (match->ut_type == INIT_PROCESS

      || match->ut_type == LOGIN_PROCESS

      || match->ut_type == USER_PROCESS

      || match->ut_type == DEAD_PROCESS)

     &&

#endif

#if _HAVE_UT_ID - 0

     (entry->ut_id[0] && match->ut_id[0]

      ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0

      : strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0)

#else

     strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0

#endif

     );

}