lib/readutmp.h

   1 /* Declarations for GNU's read utmp module.
   2    Copyright (C) 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* Written by jla; revised by djm */
  19
  20 #ifndef __READUTMP_H__
  21 # define __READUTMP_H__
  22
  23 # include <stdio.h>
  24 # include <sys/types.h>
  25
  26 # ifdef HAVE_UTMPX_H
  27 #  include <utmpx.h>
  28 #  define UTMP_STRUCT_NAME utmpx
  29 #  define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_tv.tv_sec)
  30 # else
  31 #  include <utmp.h>
  32 #  define UTMP_STRUCT_NAME utmp
  33 #  define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_time)
  34 # endif
  35
  36 typedef struct UTMP_STRUCT_NAME STRUCT_UTMP;
  37
  38 # include <time.h>
  39 # ifdef HAVE_SYS_PARAM_H
  40 #  include <sys/param.h>
  41 # endif
  42
  43 # include <errno.h>
  44 # ifndef errno
  45 extern int errno;
  46 # endif
  47
  48 # if !defined (UTMP_FILE) && defined (_PATH_UTMP)
  49 #  define UTMP_FILE _PATH_UTMP
  50 # endif
  51
  52 # if !defined (WTMP_FILE) && defined (_PATH_WTMP)
  53 #  define WTMP_FILE _PATH_WTMP
  54 # endif
  55
  56 # ifdef UTMPX_FILE /* Solaris, SysVr4 */
  57 #  undef UTMP_FILE
  58 #  define UTMP_FILE UTMPX_FILE
  59 # endif
  60
  61 # ifdef WTMPX_FILE /* Solaris, SysVr4 */
  62 #  undef WTMP_FILE
  63 #  define WTMP_FILE WTMPX_FILE
  64 # endif
  65
  66 # ifndef UTMP_FILE
  67 #  define UTMP_FILE "/etc/utmp"
  68 # endif
  69
  70 # ifndef WTMP_FILE
  71 #  define WTMP_FILE "/etc/wtmp"
  72 # endif
  73
  74 # undef PARAMS
  75 # if defined (__STDC__) && __STDC__
  76 #  define PARAMS(Args) Args
  77 # else
  78 #  define PARAMS(Args) ()
  79 # endif
  80
  81 extern char *extract_trimmed_name PARAMS ((const STRUCT_UTMP *ut));
  82 extern int read_utmp PARAMS ((const char *filename,
  83                               int *n_entries, STRUCT_UTMP **utmp_buf));
  84
  85 #endif /* __READUTMP_H__ */