/*      $NetBSD: getlabelsector.c,v 1.5 2011/09/04 12:34:49 jmcneill Exp $      */

/*
* Copyright 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Steve C. Woodford for Wasabi Systems, 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 for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: getlabelsector.c,v 1.5 2011/09/04 12:34:49 jmcneill Exp $");
#endif

#include <sys/param.h>
#include <sys/sysctl.h>
#include <util.h>

int
getlabelsector(void)
{
       int sector, mib[2];
       size_t varlen;

       mib[0] = CTL_KERN;
       mib[1] = KERN_LABELSECTOR;
       varlen = sizeof(sector);
       if (sysctl(mib, 2, &sector, &varlen, NULL, (size_t)0) < 0)
               return (-1);

       return sector;
}

off_t
getlabeloffset(void)
{
       int offset, mib[2];
       size_t varlen;

       mib[0] = CTL_KERN;
       mib[1] = KERN_LABELOFFSET;
       varlen = sizeof(offset);
       if (sysctl(mib, 2, &offset, &varlen, NULL, (size_t)0) < 0)
               return (-1);

       return ((off_t)offset);
}

int
getlabelusesmbr(void)
{
       int use;
       size_t uselen;

       uselen = sizeof(use);
       if (sysctlbyname("kern.labelusesmbr", &use, &uselen,
           NULL, (size_t)0) < 0)
               return (-1);

       return use;
}