libptytty/src/logging.C

// This file is part of libptytty. Do not make local modifications.
// http://software.schmorp.de/pkg/libptytty

/*----------------------------------------------------------------------*
 * File:        logging.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 1992      John Bovey <jdb@ukc.ac.uk>
 *                              - original version
 * Copyright (c) 1993      lipka
 * Copyright (c) 1993      Brian Stempien <stempien@cs.wmich.edu>
 * Copyright (c) 1995      Raul Garcia Garcia <rgg@tid.es>
 * Copyright (c) 1995      Piet W. Plomp <piet@idefix.icce.rug.nl>
 * Copyright (c) 1997      Raul Garcia Garcia <rgg@tid.es>
 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
 *                              - extensive modifications
 * Copyright (c) 1999      D J Hawkey Jr <hawkeyd@visi.com>
 *                              - lastlog support
 * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
 * Copyright (c) 2006      Emanuele Giaquinta <e.giaquinta@glauco.it>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#include "config.h"

#include "ptytty.h"

#if UTMP_SUPPORT

#ifdef HAVE_UTMPX_H
# include <utmpx.h>
#endif
#ifdef HAVE_UTMP_H
# include <utmp.h>
#endif
#ifdef HAVE_LASTLOG_H
# include <lastlog.h>
#endif

#include <pwd.h>

#include <cstdio>
#include <cstring>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>

/*
 * BSD style utmp entry
 *      ut_line, ut_name, ut_host, ut_time
 * SYSV style utmp (and utmpx) entry
 *      ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
 */

/* ------------------------------------------------------------------------- */
/*
 * Write a BSD style utmp entry
 */
#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
static void
write_bsd_utmp (int utmp_pos, struct utmp *ut)
{
  int             fd;

  if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
    return;

  if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
    write (fd, ut, sizeof (struct utmp));
  close (fd);
}
#endif

/* ------------------------------------------------------------------------- */
/*
 * Update a BSD style wtmp entry
 */
#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
static void
update_wtmp (const char *fname, const struct utmp *ut)
{
  int             fd, gotlock, retry;
  struct flock    lck;  /* fcntl locking scheme */
  struct stat     sbuf;

  if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
    return;

  lck.l_whence = SEEK_END;      /* start lock at current eof */
  lck.l_len = 0;                /* end at ``largest possible eof'' */
  lck.l_start = 0;
  lck.l_type = F_WRLCK; /* we want a write lock */

  /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
  for (retry = 10, gotlock = 0; retry--;)
    if (fcntl (fd, F_SETLK, &lck) != -1)
      {
        gotlock = 1;
        break;
      }
    else if (errno != EAGAIN && errno != EACCES)
      break;
  if (!gotlock)
    {
      /* give it up */
      close (fd);
      return;
    }
  if (fstat (fd, &sbuf) == 0)
    if (write (fd, ut, sizeof (struct utmp)) != sizeof (struct utmp))
      ftruncate (fd, sbuf.st_size);     /* remove bad writes */

  lck.l_type = F_UNLCK; /* unlocking the file */
  fcntl (fd, F_SETLK, &lck);
  close (fd);
}
#endif

/* ------------------------------------------------------------------------- */
#ifdef LASTLOG_SUPPORT
static void
update_lastlog (const char *pty, const char *host)
{
# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
  struct lastlogx llx;
# endif
# ifdef HAVE_STRUCT_LASTLOG
  int             fd;
  struct lastlog  ll;
  struct passwd  *pwent;
# endif

# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
  memset (&llx, 0, sizeof (llx));
  llx.ll_tv.tv_sec = time (NULL);
  llx.ll_tv.tv_usec = 0;
  strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
  strncpy (llx.ll_host, host, sizeof (llx.ll_host));
  updlastlogx (LASTLOGX_FILE, getuid (), &llx);
# endif

# ifdef HAVE_STRUCT_LASTLOG
  pwent = getpwuid (getuid ());
  if (!pwent)
    {
      PTYTTY_WARN ("no entry in password file, not updating lastlog.\n", 0);
      return;
    }

  memset (&ll, 0, sizeof (ll));
  ll.ll_time = time (NULL);
  strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
  strncpy (ll.ll_host, host, sizeof (ll.ll_host));
  if ((fd = open (LASTLOG_FILE, O_RDWR)) != -1)
    {
      if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
                 SEEK_SET) != -1)
        write (fd, &ll, sizeof (ll));
      close (fd);
    }
# endif /* HAVE_STRUCT_LASTLOG */
}
#endif /* LASTLOG_SUPPORT */

#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
static void
fill_id (char *id, const char *line, size_t id_size)
{
  size_t len = strlen (line);

  if (len > id_size)
    line += len - id_size;
  strncpy (id, line, id_size);
}
#endif

#ifdef HAVE_STRUCT_UTMP
static void
fill_utmp (struct utmp *ut, bool login, int pid, const char *line, const char *user, const char *host)
{
  memset (ut, 0, sizeof (struct utmp));

  strncpy (ut->ut_line, line, sizeof (ut->ut_line));
# ifdef HAVE_UTMP_PID
  fill_id (ut->ut_id, line, sizeof (ut->ut_id));
  ut->ut_pid = pid;
  ut->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
# endif
  ut->ut_time = time (NULL);

  if (login)
    {
# ifdef HAVE_UTMP_PID
      strncpy (ut->ut_user, user, sizeof (ut->ut_user));
# else
      strncpy (ut->ut_name, user, sizeof (ut->ut_name));
# endif
# ifdef HAVE_UTMP_HOST
      strncpy (ut->ut_host, host, sizeof (ut->ut_host));
# endif
    }
}
#endif

#ifdef HAVE_STRUCT_UTMPX
static void
fill_utmpx (struct utmpx *utx, bool login, int pid, const char *line, const char *user, const char *host)
{
  memset (utx, 0, sizeof (struct utmpx));

  // posix says that ut_line is not meaningful for DEAD_PROCESS
  // records, but most implementations of last use ut_line to
  // associate records in wtmp file
  strncpy (utx->ut_line, line, sizeof (utx->ut_line));
  fill_id (utx->ut_id, line, sizeof (utx->ut_id));
  utx->ut_pid = pid;
  utx->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
  utx->ut_tv.tv_sec = time (NULL);
  utx->ut_tv.tv_usec = 0;
# if HAVE_UTMPX_SESSION
  utx->ut_session = getsid (0);
# endif

  // posix says that ut_user is not meaningful for DEAD_PROCESS
  // records, but solaris utmp_update helper requires that the ut_user
  // field of a DEAD_PROCESS entry matches the one of an existing
  // USER_PROCESS entry for the same line, if any
  strncpy (utx->ut_user, user, sizeof (utx->ut_user));

  if (login)
    {
# ifdef HAVE_UTMPX_HOST
      strncpy (utx->ut_host, host, sizeof (utx->ut_host));
# endif
    }
}
#endif

/* ------------------------------------------------------------------------- */

/*
 * make and write utmp and wtmp entries
 */
void
ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
{
  if (!name || !*name)
    return;

  this->cmd_pid     = cmd_pid;
  this->login_shell = login_shell;

  log_session (true, hostname);
}

void
ptytty_unix::log_session (bool login, const char *hostname)
{
  struct passwd *pwent = getpwuid (getuid ());
  const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";

  const char *pty = name;

  if (!strncmp (pty, "/dev/", 5))
    pty += 5;           /* skip /dev/ prefix */

#ifdef HAVE_STRUCT_UTMP
  struct utmp *tmput;
  struct utmp ut;
  fill_utmp (&ut, login, cmd_pid, pty, user, hostname);
#endif

#ifdef HAVE_STRUCT_UTMPX
  struct utmpx *tmputx;
  struct utmpx utx;
  fill_utmpx (&utx, login, cmd_pid, pty, user, hostname);
#endif

#ifdef HAVE_STRUCT_UTMP
# ifdef HAVE_UTMP_PID
  setutent ();
  if (login || ((tmput = getutid (&ut)) && tmput->ut_pid == cmd_pid))
    pututline (&ut);
  endutent ();
# else
  int fd_stdin = dup (STDIN_FILENO);
  dup2 (tty, STDIN_FILENO);

  int utmp_pos = ttyslot ();
  write_bsd_utmp (utmp_pos, &ut);

  dup2 (fd_stdin, STDIN_FILENO);
  close (fd_stdin);
# endif
#endif

#ifdef HAVE_STRUCT_UTMPX
  setutxent ();
  if (login || ((tmputx = getutxid (&utx)) && tmputx->ut_pid == cmd_pid))
    pututxline (&utx);
  endutxent ();
#endif

#ifdef WTMP_SUPPORT
#ifdef LOG_ONLY_ON_LOGIN
  if (login_shell)
#endif
    {
# ifdef HAVE_STRUCT_UTMP
#  ifdef HAVE_UPDWTMP
      updwtmp (WTMP_FILE, &ut);
#  else
      update_wtmp (WTMP_FILE, &ut);
#  endif
# endif
# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
      updwtmpx (WTMPX_FILE, &utx);
# endif
    }
#endif

#ifdef LASTLOG_SUPPORT
#ifdef LOG_ONLY_ON_LOGIN
  if (login_shell)
#endif
    if (login)
      update_lastlog (pty, hostname);
#endif
}

/* ------------------------------------------------------------------------- */
/*
 * remove utmp and wtmp entries
 */
void
ptytty_unix::logout ()
{
  if (!cmd_pid)
    return;

  log_session (false, 0);

  cmd_pid = 0;
}

#else
void
ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
{
}
#endif

Revision:	1.56
Committed:	Thu Nov 24 13:43:05 2011 UTC (14 years, 10 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.55:	+12 -0 lines
Log Message:	Move some includes from ptytty.h to logging.C.
#	Content
1	// This file is part of libptytty. Do not make local modifications.
2	// http://software.schmorp.de/pkg/libptytty
3
4	/----------------------------------------------------------------------
5	* File: logging.C
6	----------------------------------------------------------------------
7	*
8	* All portions of code are copyright by their respective author/s.
9	* Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk>
10	* - original version
11	* Copyright (c) 1993 lipka
12	* Copyright (c) 1993 Brian Stempien <stempien@cs.wmich.edu>
13	* Copyright (c) 1995 Raul Garcia Garcia <rgg@tid.es>
14	* Copyright (c) 1995 Piet W. Plomp <piet@idefix.icce.rug.nl>
15	* Copyright (c) 1997 Raul Garcia Garcia <rgg@tid.es>
16	* Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
17	* - extensive modifications
18	* Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com>
19	* - lastlog support
20	* Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
21	* Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
22	*
23	* This program is free software; you can redistribute it and/or modify
24	* it under the terms of the GNU General Public License as published by
25	* the Free Software Foundation; either version 2 of the License, or
26	* (at your option) any later version.
27	*
28	* This program is distributed in the hope that it will be useful,
29	* but WITHOUT ANY WARRANTY; without even the implied warranty of
30	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31	* GNU General Public License for more details.
32	*
33	* You should have received a copy of the GNU General Public License
34	* along with this program; if not, write to the Free Software
35	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
36	----------------------------------------------------------------------/
37
38	#include "config.h"
39
40	#include "ptytty.h"
41
42	#if UTMP_SUPPORT
43
44	#ifdef HAVE_UTMPX_H
45	# include <utmpx.h>
46	#endif
47	#ifdef HAVE_UTMP_H
48	# include <utmp.h>
49	#endif
50	#ifdef HAVE_LASTLOG_H
51	# include <lastlog.h>
52	#endif
53
54	#include <pwd.h>
55
56	#include <cstdio>
57	#include <cstring>
58
59	#include <sys/types.h>
60	#include <sys/stat.h>
61	#include <fcntl.h>
62	#include <unistd.h>
63	#include <time.h>
64	#include <errno.h>
65
66	/*
67	* BSD style utmp entry
68	* ut_line, ut_name, ut_host, ut_time
69	* SYSV style utmp (and utmpx) entry
70	* ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
71	*/
72
73	/* ------------------------------------------------------------------------- */
74	/*
75	* Write a BSD style utmp entry
76	*/
77	#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
78	static void
79	write_bsd_utmp (int utmp_pos, struct utmp *ut)
80	{
81	int fd;
82
83	if (utmp_pos <= 0 \|\| (fd = open (UTMP_FILE, O_WRONLY)) == -1)
84	return;
85
86	if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
87	write (fd, ut, sizeof (struct utmp));
88	close (fd);
89	}
90	#endif
91
92	/* ------------------------------------------------------------------------- */
93	/*
94	* Update a BSD style wtmp entry
95	*/
96	#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
97	static void
98	update_wtmp (const char fname, const struct utmp ut)
99	{
100	int fd, gotlock, retry;
101	struct flock lck; /* fcntl locking scheme */
102	struct stat sbuf;
103
104	if ((fd = open (fname, O_WRONLY \| O_APPEND, 0)) < 0)
105	return;
106
107	lck.l_whence = SEEK_END; /* start lock at current eof */
108	lck.l_len = 0; /* end at ``largest possible eof'' */
109	lck.l_start = 0;
110	lck.l_type = F_WRLCK; /* we want a write lock */
111
112	/* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
113	for (retry = 10, gotlock = 0; retry--;)
114	if (fcntl (fd, F_SETLK, &lck) != -1)
115	{
116	gotlock = 1;
117	break;
118	}
119	else if (errno != EAGAIN && errno != EACCES)
120	break;
121	if (!gotlock)
122	{
123	/* give it up */
124	close (fd);
125	return;
126	}
127	if (fstat (fd, &sbuf) == 0)
128	if (write (fd, ut, sizeof (struct utmp)) != sizeof (struct utmp))
129	ftruncate (fd, sbuf.st_size); /* remove bad writes */
130
131	lck.l_type = F_UNLCK; /* unlocking the file */
132	fcntl (fd, F_SETLK, &lck);
133	close (fd);
134	}
135	#endif
136
137	/* ------------------------------------------------------------------------- */
138	#ifdef LASTLOG_SUPPORT
139	static void
140	update_lastlog (const char pty, const char host)
141	{
142	# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
143	struct lastlogx llx;
144	# endif
145	# ifdef HAVE_STRUCT_LASTLOG
146	int fd;
147	struct lastlog ll;
148	struct passwd *pwent;
149	# endif
150
151	# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
152	memset (&llx, 0, sizeof (llx));
153	llx.ll_tv.tv_sec = time (NULL);
154	llx.ll_tv.tv_usec = 0;
155	strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
156	strncpy (llx.ll_host, host, sizeof (llx.ll_host));
157	updlastlogx (LASTLOGX_FILE, getuid (), &llx);
158	# endif
159
160	# ifdef HAVE_STRUCT_LASTLOG
161	pwent = getpwuid (getuid ());
162	if (!pwent)
163	{
164	PTYTTY_WARN ("no entry in password file, not updating lastlog.\n", 0);
165	return;
166	}
167
168	memset (&ll, 0, sizeof (ll));
169	ll.ll_time = time (NULL);
170	strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
171	strncpy (ll.ll_host, host, sizeof (ll.ll_host));
172	if ((fd = open (LASTLOG_FILE, O_RDWR)) != -1)
173	{
174	if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
175	SEEK_SET) != -1)
176	write (fd, &ll, sizeof (ll));
177	close (fd);
178	}
179	# endif /* HAVE_STRUCT_LASTLOG */
180	}
181	#endif /* LASTLOG_SUPPORT */
182
183	#if defined(HAVE_UTMP_PID) \|\| defined(HAVE_STRUCT_UTMPX)
184	static void
185	fill_id (char id, const char line, size_t id_size)
186	{
187	size_t len = strlen (line);
188
189	if (len > id_size)
190	line += len - id_size;
191	strncpy (id, line, id_size);
192	}
193	#endif
194
195	#ifdef HAVE_STRUCT_UTMP
196	static void
197	fill_utmp (struct utmp ut, bool login, int pid, const char line, const char user, const char host)
198	{
199	memset (ut, 0, sizeof (struct utmp));
200
201	strncpy (ut->ut_line, line, sizeof (ut->ut_line));
202	# ifdef HAVE_UTMP_PID
203	fill_id (ut->ut_id, line, sizeof (ut->ut_id));
204	ut->ut_pid = pid;
205	ut->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
206	# endif
207	ut->ut_time = time (NULL);
208
209	if (login)
210	{
211	# ifdef HAVE_UTMP_PID
212	strncpy (ut->ut_user, user, sizeof (ut->ut_user));
213	# else
214	strncpy (ut->ut_name, user, sizeof (ut->ut_name));
215	# endif
216	# ifdef HAVE_UTMP_HOST
217	strncpy (ut->ut_host, host, sizeof (ut->ut_host));
218	# endif
219	}
220	}
221	#endif
222
223	#ifdef HAVE_STRUCT_UTMPX
224	static void
225	fill_utmpx (struct utmpx utx, bool login, int pid, const char line, const char user, const char host)
226	{
227	memset (utx, 0, sizeof (struct utmpx));
228
229	// posix says that ut_line is not meaningful for DEAD_PROCESS
230	// records, but most implementations of last use ut_line to
231	// associate records in wtmp file
232	strncpy (utx->ut_line, line, sizeof (utx->ut_line));
233	fill_id (utx->ut_id, line, sizeof (utx->ut_id));
234	utx->ut_pid = pid;
235	utx->ut_type = login ? USER_PROCESS : DEAD_PROCESS;
236	utx->ut_tv.tv_sec = time (NULL);
237	utx->ut_tv.tv_usec = 0;
238	# if HAVE_UTMPX_SESSION
239	utx->ut_session = getsid (0);
240	# endif
241
242	// posix says that ut_user is not meaningful for DEAD_PROCESS
243	// records, but solaris utmp_update helper requires that the ut_user
244	// field of a DEAD_PROCESS entry matches the one of an existing
245	// USER_PROCESS entry for the same line, if any
246	strncpy (utx->ut_user, user, sizeof (utx->ut_user));
247
248	if (login)
249	{
250	# ifdef HAVE_UTMPX_HOST
251	strncpy (utx->ut_host, host, sizeof (utx->ut_host));
252	# endif
253	}
254	}
255	#endif
256
257	/* ------------------------------------------------------------------------- */
258
259	/*
260	* make and write utmp and wtmp entries
261	*/
262	void
263	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
264	{
265	if (!name \|\| !*name)
266	return;
267
268	this->cmd_pid = cmd_pid;
269	this->login_shell = login_shell;
270
271	log_session (true, hostname);
272	}
273
274	void
275	ptytty_unix::log_session (bool login, const char *hostname)
276	{
277	struct passwd *pwent = getpwuid (getuid ());
278	const char *user = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
279
280	const char *pty = name;
281
282	if (!strncmp (pty, "/dev/", 5))
283	pty += 5; /* skip /dev/ prefix */
284
285	#ifdef HAVE_STRUCT_UTMP
286	struct utmp *tmput;
287	struct utmp ut;
288	fill_utmp (&ut, login, cmd_pid, pty, user, hostname);
289	#endif
290
291	#ifdef HAVE_STRUCT_UTMPX
292	struct utmpx *tmputx;
293	struct utmpx utx;
294	fill_utmpx (&utx, login, cmd_pid, pty, user, hostname);
295	#endif
296
297	#ifdef HAVE_STRUCT_UTMP
298	# ifdef HAVE_UTMP_PID
299	setutent ();
300	if (login \|\| ((tmput = getutid (&ut)) && tmput->ut_pid == cmd_pid))
301	pututline (&ut);
302	endutent ();
303	# else
304	int fd_stdin = dup (STDIN_FILENO);
305	dup2 (tty, STDIN_FILENO);
306
307	int utmp_pos = ttyslot ();
308	write_bsd_utmp (utmp_pos, &ut);
309
310	dup2 (fd_stdin, STDIN_FILENO);
311	close (fd_stdin);
312	# endif
313	#endif
314
315	#ifdef HAVE_STRUCT_UTMPX
316	setutxent ();
317	if (login \|\| ((tmputx = getutxid (&utx)) && tmputx->ut_pid == cmd_pid))
318	pututxline (&utx);
319	endutxent ();
320	#endif
321
322	#ifdef WTMP_SUPPORT
323	#ifdef LOG_ONLY_ON_LOGIN
324	if (login_shell)
325	#endif
326	{
327	# ifdef HAVE_STRUCT_UTMP
328	# ifdef HAVE_UPDWTMP
329	updwtmp (WTMP_FILE, &ut);
330	# else
331	update_wtmp (WTMP_FILE, &ut);
332	# endif
333	# endif
334	# if defined(HAVE_STRUCT_UTMPX) && defined(HAVE_UPDWTMPX)
335	updwtmpx (WTMPX_FILE, &utx);
336	# endif
337	}
338	#endif
339
340	#ifdef LASTLOG_SUPPORT
341	#ifdef LOG_ONLY_ON_LOGIN
342	if (login_shell)
343	#endif
344	if (login)
345	update_lastlog (pty, hostname);
346	#endif
347	}
348
349	/* ------------------------------------------------------------------------- */
350	/*
351	* remove utmp and wtmp entries
352	*/
353	void
354	ptytty_unix::logout ()
355	{
356	if (!cmd_pid)
357	return;
358
359	log_session (false, 0);
360
361	cmd_pid = 0;
362	}
363
364	#else
365	void
366	ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
367	{
368	}
369	#endif
370