1 /* $NetBSD: utmpentry.h,v 1.6 2008/04/28 20:24:15 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #if defined(SUPPORT_UTMPX) 33 # include <utmpx.h> 34 # define WHO_NAME_LEN _UTX_USERSIZE 35 # define WHO_LINE_LEN _UTX_LINESIZE 36 # define WHO_HOST_LEN _UTX_HOSTSIZE 37 #elif defined(SUPPORT_UTMP) 38 # include <utmp.h> 39 # define WHO_NAME_LEN UT_NAMESIZE 40 # define WHO_LINE_LEN UT_LINESIZE 41 # define WHO_HOST_LEN UT_HOSTSIZE 42 #else 43 # error Either SUPPORT_UTMPX or SUPPORT_UTMP must be defined! 44 #endif 45 46 47 struct utmpentry { 48 char name[WHO_NAME_LEN + 1]; 49 char line[WHO_LINE_LEN + 1]; 50 char host[WHO_HOST_LEN + 1]; 51 struct timeval tv; 52 pid_t pid; 53 uint16_t term; 54 uint16_t exit; 55 uint16_t sess; 56 uint16_t type; 57 struct utmpentry *next; 58 }; 59 60 extern int maxname, maxline, maxhost; 61 extern int etype; 62 63 /* 64 * getutentries provides a linked list of struct utmpentry and returns 65 * the number of entries. The first argument, if not null, names an 66 * alternate utmp(x) file to look in. 67 * 68 * The memory returned by getutentries belongs to getutentries. The 69 * list returned (or elements of it) may be returned again later if 70 * utmp hasn't changed in the meantime. 71 * 72 * endutentries clears and frees the cached data. 73 */ 74 75 int getutentries(const char *, struct utmpentry **); 76 void endutentries(void); 77