1/* Helper function for utmp functions to see if two entries are equal.
2 Copyright (C) 1996-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>
5 and Paul Janzen <pcj@primenet.com>, 1996.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <https://www.gnu.org/licenses/>. */
20
21#include <string.h>
22#include <utmp.h>
23
24#include "utmp-private.h"
25
26/* Test whether two entries match. */
27static int
28__utmp_equal (const struct utmp *entry, const struct utmp *match)
29{
30 return (entry->ut_type == INIT_PROCESS
31 || entry->ut_type == LOGIN_PROCESS
32 || entry->ut_type == USER_PROCESS
33 || entry->ut_type == DEAD_PROCESS)
34 && (match->ut_type == INIT_PROCESS
35 || match->ut_type == LOGIN_PROCESS
36 || match->ut_type == USER_PROCESS
37 || match->ut_type == DEAD_PROCESS)
38 && (entry->ut_id[0] && match->ut_id[0]
39 ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
40 : (strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line)
41 == 0));
42}
43