/* The `struct utmp' type, describing entries in the utmp file.  GNU version.   Copyright (C) 1993, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.   This file is part of the GNU C Library.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Lesser General Public   License as published by the Free Software Foundation; either   version 2.1 of the License, or (at your option) any later version.   The GNU C Library 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   Lesser General Public License for more details.   You should have received a copy of the GNU Lesser General Public   License along with the GNU C Library; if not, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#ifndef _UTMP_H# error "Never include <bits/utmp.h> directly; use <utmp.h> instead."#endif#include <paths.h>#include <sys/time.h>#include <sys/types.h>#define UT_LINESIZE	32#define UT_NAMESIZE	32#define UT_HOSTSIZE	256/* The structure describing an entry in the database of   previous logins.  */struct lastlog  {    __time_t ll_time;    char ll_line[UT_LINESIZE];    char ll_host[UT_HOSTSIZE];  };/* The structure describing the status of a terminated process.  This   type is used in `struct utmp' below.  */struct exit_status  {    short int e_termination;	/* Process termination status.  */    short int e_exit;		/* Process exit status.  */  };/* The structure describing an entry in the user accounting database.  */struct utmp{  short int ut_type;		/* Type of login.  */  pid_t ut_pid;			/* Process ID of login process.  */  char ut_line[UT_LINESIZE];	/* Devicename.  */  char ut_id[4];		/* Inittab ID.  */  char ut_user[UT_NAMESIZE];	/* Username.  */  char ut_host[UT_HOSTSIZE];	/* Hostname for remote login.  */  struct exit_status ut_exit;	/* Exit status of a process marked				   as DEAD_PROCESS.  */  long int ut_session;		/* Session ID, used for windowing.  */  struct timeval ut_tv;		/* Time entry was made.  */  int32_t ut_addr_v6[4];	/* Internet address of remote host.  */  char __unused[20];		/* Reserved for future use.  */};/* Backwards compatibility hacks.  */#define ut_name		ut_user#ifndef _NO_UT_TIME/* We have a problem here: `ut_time' is also used otherwise.  Define   _NO_UT_TIME if the compiler complains.  */# define ut_time	ut_tv.tv_sec#endif#define ut_xtime	ut_tv.tv_sec#define ut_addr		ut_addr_v6[0]/* Values for the `ut_type' field of a `struct utmp'.  */#define EMPTY		0	/* No valid user accounting information.  */#define RUN_LVL		1	/* The system's runlevel.  */#define BOOT_TIME	2	/* Time of system boot.  */#define NEW_TIME	3	/* Time after system clock changed.  */#define OLD_TIME	4	/* Time when system clock changed.  */#define INIT_PROCESS	5	/* Process spawned by the init process.  */#define LOGIN_PROCESS	6	/* Session leader of a logged in user.  */#define USER_PROCESS	7	/* Normal process.  */#define DEAD_PROCESS	8	/* Terminated process.  */#define ACCOUNTING	9/* Old Linux name for the EMPTY type.  */#define UT_UNKNOWN	EMPTY/* Tell the user that we have a modern system with UT_HOST, UT_PID,   UT_TYPE, UT_ID and UT_TV fields.  */#define _HAVE_UT_TYPE	1#define _HAVE_UT_PID	1#define _HAVE_UT_ID	1#define _HAVE_UT_TV	1#define _HAVE_UT_HOST	1