1/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <string.h>
21#include <utmp.h>
22#include <time.h>
23#include <sys/time.h>
24
25int
26logout (const char *line)
27{
28 struct utmp tmp, utbuf;
29 struct utmp *ut;
30 int result = 0;
31
32 /* Tell that we want to use the UTMP file. */
33 if (utmpname (_PATH_UTMP) == -1)
34 return 0;
35
36 /* Open UTMP file. */
37 setutent ();
38
39 /* Fill in search information. */
40 tmp.ut_type = USER_PROCESS;
41 strncpy (tmp.ut_line, line, sizeof tmp.ut_line);
42
43 /* Read the record. */
44 if (getutline_r (&tmp, &utbuf, &ut) >= 0)
45 {
46 /* Clear information about who & from where. */
47 memset (ut->ut_name, '\0', sizeof ut->ut_name);
48 memset (ut->ut_host, '\0', sizeof ut->ut_host);
49
50 struct __timespec64 ts;
51 __clock_gettime64 (CLOCK_REALTIME, &ts);
52 TIMESPEC_TO_TIMEVAL (&ut->ut_tv, &ts);
53 ut->ut_type = DEAD_PROCESS;
54
55 if (pututline (ut) != NULL)
56 result = 1;
57 }
58
59 /* Close UTMP file. */
60 endutent ();
61
62 return result;
63}
64