lib/readutmp.h

   1 /* Declarations for GNU's read utmp module.
   2    Copyright (C) 1992-1999 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 # ifndef PARAMS
  24 #  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
  25 #   define PARAMS(Args) Args
  26 #  else
  27 #   define PARAMS(Args) ()
  28 #  endif
  29 # endif
  30
  31 # include <sys/types.h>
  32
  33 # ifdef HAVE_UTMPX_H
  34 #  include <utmpx.h>
  35 #  define UTMP_STRUCT_NAME utmpx
  36 #  define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_tv.tv_sec)
  37 #  define SET_UTMP_ENT setutxent
  38 #  define GET_UTMP_ENT getutxent
  39 #  define END_UTMP_ENT endutxent
  40 #  define UTMP_NAME_FUNCTION utmpxname
  41 # else
  42 #  include <utmp.h>
  43 #  define UTMP_STRUCT_NAME utmp
  44 #  define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_time)
  45 #  define SET_UTMP_ENT setutent
  46 #  define GET_UTMP_ENT getutent
  47 #  define END_UTMP_ENT endutent
  48 #  define UTMP_NAME_FUNCTION utmpname
  49 # endif
  50
  51 typedef struct UTMP_STRUCT_NAME STRUCT_UTMP;
  52
  53 # include <time.h>
  54 # ifdef HAVE_SYS_PARAM_H
  55 #  include <sys/param.h>
  56 # endif
  57
  58 # include <errno.h>
  59 # ifndef errno
  60 extern int errno;
  61 # endif
  62
  63 # if !defined (UTMP_FILE) && defined (_PATH_UTMP)
  64 #  define UTMP_FILE _PATH_UTMP
  65 # endif
  66
  67 # if !defined (WTMP_FILE) && defined (_PATH_WTMP)
  68 #  define WTMP_FILE _PATH_WTMP
  69 # endif
  70
  71 # ifdef UTMPX_FILE /* Solaris, SysVr4 */
  72 #  undef UTMP_FILE
  73 #  define UTMP_FILE UTMPX_FILE
  74 # endif
  75
  76 # ifdef WTMPX_FILE /* Solaris, SysVr4 */
  77 #  undef WTMP_FILE
  78 #  define WTMP_FILE WTMPX_FILE
  79 # endif
  80
  81 # ifndef UTMP_FILE
  82 #  define UTMP_FILE "/etc/utmp"
  83 # endif
  84
  85 # ifndef WTMP_FILE
  86 #  define WTMP_FILE "/etc/wtmp"
  87 # endif
  88
  89 # undef PARAMS
  90 # if defined (__STDC__) && __STDC__
  91 #  define PARAMS(Args) Args
  92 # else
  93 #  define PARAMS(Args) ()
  94 # endif
  95
  96 extern char *extract_trimmed_name PARAMS ((const STRUCT_UTMP *ut));
  97 extern int read_utmp PARAMS ((const char *filename,
  98                               int *n_entries, STRUCT_UTMP **utmp_buf));
  99
 100 #endif /* __READUTMP_H__ */