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pcg |
1.1 |
/*--------------------------------*-C-*---------------------------------* |
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* File: logging.c |
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*----------------------------------------------------------------------* |
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* |
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* All portions of code are copyright by their respective author/s. |
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* Copyright (c) 1992 John Bovey <jdb@ukc.ac.uk> |
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* - original version |
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* Copyright (c) 1993 lipka |
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* Copyright (c) 1993 Brian Stempien <stempien@cs.wmich.edu> |
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* Copyright (c) 1995 Raul Garcia Garcia <rgg@tid.es> |
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* Copyright (c) 1995 Piet W. Plomp <piet@idefix.icce.rug.nl> |
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* Copyright (c) 1997 Raul Garcia Garcia <rgg@tid.es> |
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* Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com> |
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* - extensive modifications |
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* Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com> |
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* - lastlog support |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*----------------------------------------------------------------------*/ |
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/*----------------------------------------------------------------------* |
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* Public: |
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* extern void cleanutent (void); |
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* extern void makeutent (const char * pty, const char * hostname); |
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* |
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* Private: |
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* rxvt_update_wtmp (); |
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*----------------------------------------------------------------------*/ |
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#include "../config.h" /* NECESSARY */ |
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#include "rxvt.h" /* NECESSARY */ |
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#include "logging.h" |
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#ifdef UTMP_SUPPORT |
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/* |
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* BSD style utmp entry |
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* ut_line, ut_name, ut_host, ut_time |
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* SYSV style utmp (and utmpx) entry |
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* ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time |
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*/ |
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/* ------------------------------------------------------------------------- */ |
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/* |
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* make and write utmp and wtmp entries |
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*/ |
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void |
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pcg |
1.4 |
rxvt_term::makeutent (const char *pty, const char *hostname) |
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pcg |
1.1 |
{ |
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#ifdef HAVE_STRUCT_UTMP |
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pcg |
1.7 |
struct utmp *ut = & (this->ut); |
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pcg |
1.1 |
#endif |
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#ifdef HAVE_STRUCT_UTMPX |
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pcg |
1.7 |
struct utmpx *utx = & (this->utx); |
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pcg |
1.1 |
#endif |
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#ifdef HAVE_UTMP_PID |
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pcg |
1.6 |
int i; |
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pcg |
1.1 |
#endif |
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1.6 |
char ut_id[5]; |
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pcg |
1.7 |
struct passwd *pwent = getpwuid (getuid ()); |
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pcg |
1.1 |
|
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pcg |
1.7 |
if (!STRNCMP (pty, "/dev/", 5)) |
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pcg |
1.6 |
pty += 5; /* skip /dev/ prefix */ |
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1.1 |
|
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1.7 |
if (!STRNCMP (pty, "pty", 3) || !STRNCMP (pty, "tty", 3)) |
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pcg |
1.6 |
{ |
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1.7 |
STRNCPY (ut_id, (pty + 3), sizeof (ut_id)); |
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1.1 |
} |
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#ifdef HAVE_UTMP_PID |
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1.7 |
else if (sscanf (pty, "pts/%d", &i) == 1) |
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sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */ |
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1.1 |
#endif |
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1.7 |
else if (STRNCMP (pty, "pty", 3) && STRNCMP (pty, "tty", 3)) |
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pcg |
1.6 |
{ |
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pcg |
1.7 |
rxvt_print_error ("can't parse tty name \"%s\"", pty); |
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pcg |
1.6 |
return; |
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pcg |
1.1 |
} |
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#ifdef HAVE_STRUCT_UTMP |
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pcg |
1.7 |
MEMSET (ut, 0, sizeof (struct utmp)); |
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1.1 |
# ifdef HAVE_UTMP_PID |
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pcg |
1.7 |
setutent (); |
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STRNCPY (ut->ut_id, ut_id, sizeof (ut->ut_id)); |
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pcg |
1.6 |
ut->ut_type = DEAD_PROCESS; |
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1.7 |
getutid (ut); /* position to entry in utmp file */ |
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STRNCPY (ut_id, ut_id, sizeof (ut_id)); |
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pcg |
1.1 |
# endif |
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#endif |
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#ifdef HAVE_STRUCT_UTMPX |
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pcg |
1.7 |
MEMSET (utx, 0, sizeof (struct utmpx)); |
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setutxent (); |
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STRNCPY (utx->ut_id, ut_id, sizeof (utx->ut_id)); |
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pcg |
1.6 |
utx->ut_type = DEAD_PROCESS; |
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1.7 |
getutxid (utx); /* position to entry in utmp file */ |
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STRNCPY (ut_id, ut_id, sizeof (ut_id)); |
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1.1 |
#endif |
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#ifdef HAVE_STRUCT_UTMP |
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pcg |
1.7 |
STRNCPY (ut->ut_line, pty, sizeof (ut->ut_line)); |
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ut->ut_time = time (NULL); |
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1.1 |
# ifdef HAVE_UTMP_PID |
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pcg |
1.7 |
STRNCPY (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", |
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sizeof (ut->ut_user)); |
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STRNCPY (ut->ut_id, ut_id, sizeof (ut->ut_id)); |
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ut->ut_time = time (NULL); |
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pcg |
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ut->ut_pid = cmd_pid; |
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# ifdef HAVE_UTMP_HOST |
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pcg |
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STRNCPY (ut->ut_host, hostname, sizeof (ut->ut_host)); |
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1.1 |
# endif |
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pcg |
1.6 |
ut->ut_type = USER_PROCESS; |
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pcg |
1.7 |
pututline (ut); |
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endutent (); /* close the file */ |
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pcg |
1.6 |
utmp_pos = 0; |
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pcg |
1.1 |
# else |
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pcg |
1.7 |
STRNCPY (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?", |
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sizeof (ut->ut_name)); |
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pcg |
1.1 |
# ifdef HAVE_UTMP_HOST |
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pcg |
1.7 |
STRNCPY (ut->ut_host, hostname, sizeof (ut->ut_host)); |
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pcg |
1.1 |
# endif |
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# endif |
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#endif |
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#ifdef HAVE_STRUCT_UTMPX |
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pcg |
1.7 |
STRNCPY (utx->ut_line, pty, sizeof (utx->ut_line)); |
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STRNCPY (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", |
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sizeof (utx->ut_user)); |
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STRNCPY (utx->ut_id, ut_id, sizeof (utx->ut_id)); |
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utx->ut_session = getsid (0); |
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utx->ut_tv.tv_sec = time (NULL); |
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pcg |
1.6 |
utx->ut_tv.tv_usec = 0; |
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utx->ut_pid = cmd_pid; |
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pcg |
1.1 |
# ifdef HAVE_UTMPX_HOST |
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pcg |
1.7 |
STRNCPY (utx->ut_host, hostname, sizeof (utx->ut_host)); |
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pcg |
1.1 |
# if 0 |
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pcg |
1.6 |
{ |
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char *colon; |
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pcg |
1.1 |
|
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pcg |
1.7 |
if ((colon = STRRCHR (ut->ut_host, ':')) != NULL) |
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pcg |
1.6 |
*colon = '\0'; |
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} |
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pcg |
1.1 |
# endif |
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# endif |
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pcg |
1.6 |
utx->ut_type = USER_PROCESS; |
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pcg |
1.7 |
pututxline (utx); |
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endutxent (); /* close the file */ |
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pcg |
1.6 |
utmp_pos = 0; |
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pcg |
1.1 |
#endif |
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#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) |
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pcg |
1.6 |
|
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{ |
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int i; |
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pcg |
1.1 |
# ifdef HAVE_TTYSLOT |
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pcg |
1.7 |
i = ttyslot (); |
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if (rxvt_write_bsd_utmp (i, ut)) |
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pcg |
1.6 |
utmp_pos = i; |
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1.1 |
# else |
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pcg |
1.6 |
FILE *fd0; |
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pcg |
1.1 |
|
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pcg |
1.7 |
if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL) |
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pcg |
1.6 |
{ |
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char buf[256], name[256]; |
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pcg |
1.7 |
buf[sizeof (buf) - 1] = '\0'; |
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for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);) |
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pcg |
1.6 |
{ |
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pcg |
1.7 |
if (*buf == '#' || sscanf (buf, "%s", name) != 1) |
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pcg |
1.6 |
continue; |
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pcg |
1.7 |
if (!STRCMP (ut->ut_line, name)) |
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pcg |
1.6 |
{ |
183 |
pcg |
1.7 |
if (!rxvt_write_bsd_utmp (i, ut)) |
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pcg |
1.6 |
i = 0; |
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utmp_pos = i; |
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pcg |
1.7 |
fclose (fd0); |
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pcg |
1.6 |
break; |
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} |
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i++; |
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} |
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pcg |
1.7 |
fclose (fd0); |
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pcg |
1.6 |
} |
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# endif |
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pcg |
1.1 |
|
195 |
pcg |
1.6 |
} |
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pcg |
1.1 |
#endif |
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#ifdef WTMP_SUPPORT |
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# ifdef WTMP_ONLY_ON_LOGIN |
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pcg |
1.6 |
if (Options & Opt_loginShell) |
201 |
pcg |
1.1 |
# endif |
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{ |
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# ifdef HAVE_STRUCT_UTMP |
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# ifdef HAVE_UPDWTMP |
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pcg |
1.7 |
updwtmp (RXVT_WTMP_FILE, ut); |
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pcg |
1.1 |
# else |
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pcg |
1.7 |
rxvt_update_wtmp (RXVT_WTMP_FILE, ut); |
208 |
pcg |
1.1 |
# endif |
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# endif |
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# ifdef HAVE_STRUCT_UTMPX |
211 |
pcg |
1.7 |
updwtmpx (RXVT_WTMPX_FILE, utx); |
212 |
pcg |
1.1 |
# endif |
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} |
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#endif |
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#if defined(LASTLOG_SUPPORT) && defined(RXVT_LASTLOG_FILE) |
216 |
pcg |
1.6 |
if (Options & Opt_loginShell) |
217 |
pcg |
1.7 |
rxvt_update_lastlog (RXVT_LASTLOG_FILE, pty, hostname); |
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pcg |
1.1 |
#endif |
219 |
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} |
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/* ------------------------------------------------------------------------- */ |
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/* |
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* remove utmp and wtmp entries |
224 |
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*/ |
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void |
226 |
pcg |
1.4 |
rxvt_term::cleanutent () |
227 |
pcg |
1.1 |
{ |
228 |
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#ifdef HAVE_STRUCT_UTMP |
229 |
pcg |
1.7 |
struct utmp *ut = & (this->ut); |
230 |
pcg |
1.1 |
#endif |
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#ifdef HAVE_STRUCT_UTMPX |
232 |
pcg |
1.7 |
struct utmpx *tmputx, *utx = & (this->utx); |
233 |
pcg |
1.1 |
#endif |
234 |
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235 |
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#ifdef HAVE_STRUCT_UTMP |
236 |
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# ifdef HAVE_UTMP_PID |
237 |
pcg |
1.7 |
MEMSET (ut, 0, sizeof (struct utmp)); |
238 |
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setutent (); |
239 |
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STRNCPY (ut->ut_id, ut_id, sizeof (ut->ut_id)); |
240 |
pcg |
1.6 |
ut->ut_type = USER_PROCESS; |
241 |
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{ |
242 |
pcg |
1.7 |
struct utmp *tmput = getutid (ut); |
243 |
pcg |
1.6 |
|
244 |
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if (tmput) /* position to entry in utmp file */ |
245 |
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ut = tmput; |
246 |
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} |
247 |
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ut->ut_type = DEAD_PROCESS; |
248 |
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# else |
249 |
pcg |
1.7 |
MEMSET (ut->ut_name, 0, sizeof (ut->ut_name)); |
250 |
pcg |
1.1 |
# ifdef HAVE_UTMP_HOST |
251 |
pcg |
1.7 |
MEMSET (ut->ut_host, 0, sizeof (ut->ut_host)); |
252 |
pcg |
1.1 |
# endif |
253 |
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# endif |
254 |
pcg |
1.7 |
ut->ut_time = time (NULL); |
255 |
pcg |
1.1 |
#endif |
256 |
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257 |
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#ifdef HAVE_STRUCT_UTMPX |
258 |
pcg |
1.7 |
MEMSET (utx, 0, sizeof (struct utmpx)); |
259 |
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setutxent (); |
260 |
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STRNCPY (utx->ut_id, ut_id, sizeof (utx->ut_id)); |
261 |
pcg |
1.6 |
utx->ut_type = USER_PROCESS; |
262 |
pcg |
1.7 |
if ((tmputx = getutxid (utx))) /* position to entry in utmp file */ |
263 |
pcg |
1.6 |
utx = tmputx; |
264 |
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utx->ut_type = DEAD_PROCESS; |
265 |
pcg |
1.7 |
utx->ut_session = getsid (0); |
266 |
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utx->ut_tv.tv_sec = time (NULL); |
267 |
pcg |
1.6 |
utx->ut_tv.tv_usec = 0; |
268 |
pcg |
1.1 |
#endif |
269 |
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|
270 |
pcg |
1.6 |
/* |
271 |
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* Write ending wtmp entry |
272 |
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*/ |
273 |
pcg |
1.1 |
#ifdef WTMP_SUPPORT |
274 |
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# ifdef WTMP_ONLY_ON_LOGIN |
275 |
pcg |
1.6 |
if (Options & Opt_loginShell) |
276 |
pcg |
1.1 |
# endif |
277 |
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{ |
278 |
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# ifdef HAVE_STRUCT_UTMP |
279 |
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# ifdef HAVE_UPDWTMP |
280 |
pcg |
1.7 |
updwtmp (RXVT_WTMP_FILE, ut); |
281 |
pcg |
1.1 |
# else |
282 |
pcg |
1.7 |
rxvt_update_wtmp (RXVT_WTMP_FILE, ut); |
283 |
pcg |
1.1 |
# endif |
284 |
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# endif |
285 |
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# ifdef HAVE_STRUCT_UTMPX |
286 |
pcg |
1.7 |
updwtmpx (RXVT_WTMPX_FILE, utx); |
287 |
pcg |
1.1 |
# endif |
288 |
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} |
289 |
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#endif |
290 |
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|
291 |
pcg |
1.6 |
/* |
292 |
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* Write utmp entry |
293 |
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*/ |
294 |
pcg |
1.1 |
#ifdef HAVE_STRUCT_UTMP |
295 |
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# ifdef HAVE_UTMP_PID |
296 |
pcg |
1.6 |
if (ut->ut_pid == cmd_pid) |
297 |
pcg |
1.7 |
pututline (ut); |
298 |
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endutent (); |
299 |
pcg |
1.1 |
# else |
300 |
pcg |
1.7 |
MEMSET (ut, 0, sizeof (struct utmp)); |
301 |
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rxvt_write_bsd_utmp (utmp_pos, ut); |
302 |
pcg |
1.1 |
# endif |
303 |
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#endif |
304 |
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#ifdef HAVE_STRUCT_UTMPX |
305 |
pcg |
1.6 |
if (utx->ut_pid == cmd_pid) |
306 |
pcg |
1.7 |
pututxline (utx); |
307 |
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endutxent (); |
308 |
pcg |
1.1 |
#endif |
309 |
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} |
310 |
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|
311 |
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/* ------------------------------------------------------------------------- */ |
312 |
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/* |
313 |
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* Write a BSD style utmp entry |
314 |
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*/ |
315 |
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#ifdef HAVE_UTMP_H |
316 |
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/* INTPROTO */ |
317 |
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int |
318 |
pcg |
1.7 |
rxvt_write_bsd_utmp (int utmp_pos, struct utmp *wu) |
319 |
pcg |
1.1 |
{ |
320 |
pcg |
1.6 |
int fd; |
321 |
pcg |
1.1 |
|
322 |
pcg |
1.7 |
if (utmp_pos <= 0 || (fd = open (RXVT_UTMP_FILE, O_WRONLY)) == -1) |
323 |
pcg |
1.6 |
return 0; |
324 |
pcg |
1.1 |
|
325 |
pcg |
1.7 |
if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1) |
326 |
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write (fd, wu, sizeof (struct utmp)); |
327 |
|
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close (fd); |
328 |
pcg |
1.6 |
return 1; |
329 |
pcg |
1.1 |
} |
330 |
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#endif |
331 |
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|
332 |
|
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/* ------------------------------------------------------------------------- */ |
333 |
|
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/* |
334 |
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* Update a BSD style wtmp entry |
335 |
|
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*/ |
336 |
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#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) |
337 |
|
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/* INTPROTO */ |
338 |
|
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void |
339 |
pcg |
1.7 |
rxvt_update_wtmp (const char *fname, const struct utmp *putmp) |
340 |
pcg |
1.1 |
{ |
341 |
pcg |
1.6 |
int fd, gotlock, retry; |
342 |
|
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struct flock lck; /* fcntl locking scheme */ |
343 |
|
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struct stat sbuf; |
344 |
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|
345 |
pcg |
1.7 |
if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0) |
346 |
pcg |
1.6 |
return; |
347 |
|
|
|
348 |
|
|
lck.l_whence = SEEK_END; /* start lock at current eof */ |
349 |
|
|
lck.l_len = 0; /* end at ``largest possible eof'' */ |
350 |
|
|
lck.l_start = 0; |
351 |
|
|
lck.l_type = F_WRLCK; /* we want a write lock */ |
352 |
|
|
|
353 |
|
|
/* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */ |
354 |
|
|
for (retry = 10, gotlock = 0; retry--;) |
355 |
pcg |
1.7 |
if (fcntl (fd, F_SETLK, &lck) != -1) |
356 |
pcg |
1.6 |
{ |
357 |
|
|
gotlock = 1; |
358 |
|
|
break; |
359 |
|
|
} |
360 |
|
|
else if (errno != EAGAIN && errno != EACCES) |
361 |
|
|
break; |
362 |
|
|
if (!gotlock) |
363 |
|
|
{ /* give it up */ |
364 |
pcg |
1.7 |
close (fd); |
365 |
pcg |
1.6 |
return; |
366 |
|
|
} |
367 |
pcg |
1.7 |
if (fstat (fd, &sbuf) == 0) |
368 |
|
|
if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp)) |
369 |
|
|
ftruncate (fd, sbuf.st_size); /* remove bad writes */ |
370 |
pcg |
1.6 |
|
371 |
|
|
lck.l_type = F_UNLCK; /* unlocking the file */ |
372 |
pcg |
1.7 |
fcntl (fd, F_SETLK, &lck); |
373 |
|
|
close (fd); |
374 |
pcg |
1.1 |
} |
375 |
|
|
#endif |
376 |
|
|
|
377 |
|
|
/* ------------------------------------------------------------------------- */ |
378 |
|
|
#ifdef LASTLOG_SUPPORT |
379 |
|
|
/* INTPROTO */ |
380 |
|
|
void |
381 |
pcg |
1.7 |
rxvt_update_lastlog (const char *fname, const char *pty, const char *host) |
382 |
pcg |
1.1 |
{ |
383 |
|
|
# ifdef HAVE_STRUCT_LASTLOGX |
384 |
pcg |
1.6 |
struct lastlogx llx; |
385 |
pcg |
1.1 |
# endif |
386 |
|
|
# ifdef HAVE_STRUCT_LASTLOG |
387 |
pcg |
1.6 |
int fd; |
388 |
|
|
struct lastlog ll; |
389 |
pcg |
1.1 |
# ifdef LASTLOG_IS_DIR |
390 |
pcg |
1.6 |
char lastlogfile[256]; |
391 |
pcg |
1.1 |
# endif |
392 |
pcg |
1.6 |
struct passwd *pwent; |
393 |
pcg |
1.1 |
# endif |
394 |
|
|
|
395 |
|
|
# ifdef HAVE_STRUCT_LASTLOGX |
396 |
pcg |
1.7 |
MEMSET (&llx, 0, sizeof (llx)); |
397 |
|
|
llx.ll_tv.tv_sec = time (NULL); |
398 |
pcg |
1.6 |
llx.ll_tv.tv_usec = 0; |
399 |
pcg |
1.7 |
STRNCPY (llx.ll_line, pty, sizeof (llx.ll_line)); |
400 |
|
|
STRNCPY (llx.ll_host, host, sizeof (llx.ll_host)); |
401 |
|
|
updlastlogx (RXVT_LASTLOGX_FILE, getuid (), &llx); |
402 |
pcg |
1.1 |
# endif |
403 |
|
|
|
404 |
|
|
# ifdef HAVE_STRUCT_LASTLOG |
405 |
pcg |
1.7 |
pwent = getpwuid (getuid ()); |
406 |
pcg |
1.6 |
if (!pwent) |
407 |
|
|
{ |
408 |
pcg |
1.7 |
rxvt_print_error ("no entry in password file"); |
409 |
pcg |
1.6 |
return; |
410 |
pcg |
1.1 |
} |
411 |
pcg |
1.7 |
MEMSET (&ll, 0, sizeof (ll)); |
412 |
|
|
ll.ll_time = time (NULL); |
413 |
|
|
STRNCPY (ll.ll_line, pty, sizeof (ll.ll_line)); |
414 |
|
|
STRNCPY (ll.ll_host, host, sizeof (ll.ll_host)); |
415 |
pcg |
1.1 |
# ifdef LASTLOG_IS_DIR |
416 |
pcg |
1.7 |
sprintf (lastlogfile, "%.*s/%.*s", |
417 |
|
|
sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname, |
418 |
|
|
sizeof (pwent->pw_name), |
419 |
pcg |
1.6 |
(!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown" |
420 |
|
|
: pwent->pw_name); |
421 |
pcg |
1.7 |
if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0) |
422 |
pcg |
1.6 |
{ |
423 |
pcg |
1.7 |
write (fd, &ll, sizeof (ll)); |
424 |
|
|
close (fd); |
425 |
pcg |
1.1 |
} |
426 |
|
|
# else |
427 |
pcg |
1.7 |
if ((fd = open (fname, O_RDWR)) != -1) |
428 |
pcg |
1.6 |
{ |
429 |
pcg |
1.7 |
if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)), |
430 |
pcg |
1.6 |
SEEK_SET) != -1) |
431 |
pcg |
1.7 |
write (fd, &ll, sizeof (ll)); |
432 |
|
|
close (fd); |
433 |
pcg |
1.1 |
} |
434 |
|
|
# endif /* LASTLOG_IS_DIR */ |
435 |
|
|
# endif /* HAVE_STRUCT_LASTLOG */ |
436 |
|
|
} |
437 |
|
|
#endif /* LASTLOG_SUPPORT */ |
438 |
|
|
/* ------------------------------------------------------------------------- */ |
439 |
|
|
|
440 |
|
|
#endif /* UTMP_SUPPORT */ |