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[glibc.git] / login / logout.c
blob9a87fe4e3f2dee303c4334f74d99f211fd8a4410
1 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <errno.h>
21 #include <string.h>
22 #include <utmp.h>
23 #include <sys/time.h>
25 int
26 logout (const char *line)
28 struct utmp tmp, utbuf;
29 struct utmp *ut;
30 int result = 0;
32 /* Tell that we want to use the UTMP file. */
33 if (utmpname (_PATH_UTMP) == -1)
34 return 0;
36 /* Open UTMP file. */
37 setutent ();
39 /* Fill in search information. */
40 #if _HAVE_UT_TYPE - 0
41 tmp.ut_type = USER_PROCESS;
42 #endif
43 strncpy (tmp.ut_line, line, sizeof tmp.ut_line);
45 /* Read the record. */
46 if (getutline_r (&tmp, &utbuf, &ut) >= 0)
48 /* Clear information about who & from where. */
49 bzero (ut->ut_name, sizeof ut->ut_name);
50 #if _HAVE_UT_HOST - 0
51 bzero (ut->ut_host, sizeof ut->ut_host);
52 #endif
53 #if _HAVE_UT_TV - 0
54 gettimeofday (&ut->ut_tv, NULL);
55 #else
56 time (&ut->ut_time);
57 #endif
58 #if _HAVE_UT_TYPE - 0
59 ut->ut_type = DEAD_PROCESS;
60 #endif
62 if (pututline (ut) != NULL)
63 result = 1;
66 /* Close UTMP file. */
67 endutent ();
69 return result;