login/programs/utmpdump.c

   1 /* utmpdump - dump utmp-like files.
   2    Copyright (C) 1997 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <errno.h>
  22 #include <error.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <time.h>
  26 #include <unistd.h>
  27 #include <utmp.h>
  28
  29 void
  30 print_entry (struct utmp *up)
  31 {
  32 #if _HAVE_UT_TV - 0
  33   printf ("[%d] [%05d] [%-4.4s] [%-8.8s] [%-12.12s] [%-15.15s] [%ld]\n",
  34           up->ut_type, up->ut_pid, up->ut_id, up->ut_user,
  35           up->ut_line, 4 + ctime (&up->ut_tv.tv_sec), up->ut_tv.tv_usec);
  36 #else
  37   printf ("[%d] [%05d] [%-4.4s] [%-8.8s] [%-12.12s] [%-15.15s]\n",
  38           up->ut_type, up->ut_pid, up->ut_id, up->ut_user,
  39           up->ut_line, 4 + ctime (&up->ut_time));
  40 #endif
  41 }
  42
  43 int
  44 main (int argc, char *argv[])
  45 {
  46   struct utmp *up;
  47
  48   if (argc > 1)
  49     utmpname (argv[1]);
  50
  51   setutent ();
  52
  53   while ((up = getutent ()))
  54     print_entry (up);
  55
  56   endutent ();
  57
  58   return EXIT_SUCCESS;
  59 }