freebsd-src/include/utmp.h

/*
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)utmp.h	8.2 (Berkeley) 1/21/94
 * $FreeBSD$
 */

#ifndef	_UTMP_H_
#define	_UTMP_H_

#define	_PATH_UTMP	"/var/run/utmp"
#define	_PATH_WTMP	"/var/log/wtmp"
#define	_PATH_LASTLOG	"/var/log/lastlog"

/*
 * XXX: These values are too low, but cannot be changed without breaking
 * the file format.  Right now pts(4) is limited to 1000 instances,
 * because /dev/pts/1000 would require UT_LINESIZE to be bigger.
 * UT_HOSTSIZE is also too small to hold most common hostnames or IPv6
 * addresses.
 */
#define	UT_NAMESIZE	16	/* see MAXLOGNAME in <sys/param.h> */
#define	UT_LINESIZE	8
#define	UT_HOSTSIZE	16

struct lastlog {
	int32_t	ll_time;
	char	ll_line[UT_LINESIZE];
	char	ll_host[UT_HOSTSIZE];
};

struct utmp {
	char	ut_line[UT_LINESIZE];
	char	ut_name[UT_NAMESIZE];
	char	ut_host[UT_HOSTSIZE];
	int32_t	ut_time;
};

#endif /* !_UTMP_H_ */