/* Helper function for utmp functions to see if two entries are equal.
   Copyright (C) 1996-2022 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
   <https://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 (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)
    && (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));
}
