1/* Helper function for utmp functions to see if two entries are equal.
2 Copyright (C) 1996-2019 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 <http://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
31 (
32#if _HAVE_UT_TYPE - 0
33 (entry->ut_type == INIT_PROCESS
34 || entry->ut_type == LOGIN_PROCESS
35 || entry->ut_type == USER_PROCESS
36 || entry->ut_type == DEAD_PROCESS)
37 &&
38 (match->ut_type == INIT_PROCESS
39 || match->ut_type == LOGIN_PROCESS
40 || match->ut_type == USER_PROCESS
41 || match->ut_type == DEAD_PROCESS)
42 &&
43#endif
44#if _HAVE_UT_ID - 0
45 (entry->ut_id[0] && match->ut_id[0]
46 ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
47 : strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0)
48#else
49 strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0
50#endif
51 );
52}
53