1 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <string.h>
20 #include <utmp.h>
21 #include <time.h>
22 #include <sys/time.h>
23 #include <shlib-compat.h>
24
25 int
__logout(const char * line)26 __logout (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 versioned_symbol (libc, __logout, logout, GLIBC_2_34);
65 libc_hidden_ver (__logout, logout)
66
67 #if OTHER_SHLIB_COMPAT (libutil, GLIBC_2_0, GLIBC_2_34)
68 compat_symbol (libutil, __logout, logout, GLIBC_2_0);
69 #endif
70