90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* $NetBSD: getlabelsector.c,v 1.5 2011/09/04 12:34:49 jmcneill Exp $ */
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/*
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* Copyright 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Steve C. Woodford for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: getlabelsector.c,v 1.5 2011/09/04 12:34:49 jmcneill Exp $");
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#endif
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <util.h>
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int
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getlabelsector(void)
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{
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int sector, mib[2];
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size_t varlen;
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mib[0] = CTL_KERN;
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mib[1] = KERN_LABELSECTOR;
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varlen = sizeof(sector);
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if (sysctl(mib, 2, §or, &varlen, NULL, (size_t)0) < 0)
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return (-1);
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return sector;
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}
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off_t
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getlabeloffset(void)
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{
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int offset, mib[2];
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size_t varlen;
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mib[0] = CTL_KERN;
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mib[1] = KERN_LABELOFFSET;
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varlen = sizeof(offset);
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if (sysctl(mib, 2, &offset, &varlen, NULL, (size_t)0) < 0)
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return (-1);
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return ((off_t)offset);
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}
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int
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getlabelusesmbr(void)
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{
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int use;
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size_t uselen;
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uselen = sizeof(use);
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if (sysctlbyname("kern.labelusesmbr", &use, &uselen,
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NULL, (size_t)0) < 0)
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return (-1);
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return use;
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}
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