89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* $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, §or, &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;
|
|
}
|