1/* $NetBSD: getlabelsector.c,v 1.4 2011/08/30 12:39:52 bouyer Exp $ */ 2 3/* 4 * Copyright 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Steve C. Woodford for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#include <sys/cdefs.h> 39#if defined(LIBC_SCCS) && !defined(lint) 40__RCSID("$NetBSD: getlabelsector.c,v 1.4 2011/08/30 12:39:52 bouyer Exp $"); 41#endif 42 43#include <sys/param.h> 44#include <sys/sysctl.h> 45#include <util.h> 46 47int 48getlabelsector(void) 49{ 50 int sector, mib[2]; 51 size_t varlen; 52 53 mib[0] = CTL_KERN; 54 mib[1] = KERN_LABELSECTOR; 55 varlen = sizeof(sector); 56 if (sysctl(mib, 2, §or, &varlen, NULL, (size_t)0) < 0) 57 return (-1); 58 59 return sector; 60} 61 62off_t 63getlabeloffset(void) 64{ 65 int offset, mib[2]; 66 size_t varlen; 67 68 mib[0] = CTL_KERN; 69 mib[1] = KERN_LABELOFFSET; 70 varlen = sizeof(offset); 71 if (sysctl(mib, 2, &offset, &varlen, NULL, (size_t)0) < 0) 72 return (-1); 73 74 return ((off_t)offset); 75} 76 77int 78getlabelusesmbr(void) 79{ 80 int use; 81 size_t uselen; 82 83 uselen = sizeof(use); 84 if (sysctlbyname("kern.labelusesmbr", &use, &uselen, 85 NULL, (size_t)0) < 0) 86 return (-1); 87 88 return use; 89} 90