2012-09-11 18:02:49 +02:00
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.\" $NetBSD: getlabelsector.3,v 1.8 2011/09/14 11:43:29 njoly Exp $
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2011-09-26 18:19:29 +02:00
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.\"
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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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2012-09-11 18:02:49 +02:00
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.Dd August 25, 2011
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2011-09-26 18:19:29 +02:00
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.Dt GETLABELSECTOR 3
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.Os
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.Sh NAME
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.Nm getlabelsector ,
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2012-09-11 18:02:49 +02:00
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.Nm getlabeloffset ,
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.Nm getlabelusesmbr
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.Nd get disklabel location informations
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2011-09-26 18:19:29 +02:00
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.Sh LIBRARY
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.Lb libutil
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.Sh SYNOPSIS
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.In util.h
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.Ft daddr_t
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.Fn getlabelsector void
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.Ft off_t
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.Fn getlabeloffset void
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.Ft int
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.Fn getlabelusesmbr void
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2011-09-26 18:19:29 +02:00
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.Sh DESCRIPTION
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The
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.Fn getlabelsector
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and
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.Fn getlabeloffset
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functions return values which describe the exact on-disk location of the
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.Xr disklabel 5
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on the current system, or \-1 on error.
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These functions supersede the hardcoded
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.Dv LABELSECTOR
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and
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.Dv LABELOFFSET
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definitions previously used to derive the location of the
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.Xr disklabel 5 .
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.Pp
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The
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.Fn getlabelusesmbr
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returns 1 if the disklabel is located inside a MBR partition, 0 if it's stored
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relative to the start of the disk, or \-1 on error.
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2011-09-26 18:19:29 +02:00
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.Sh SEE ALSO
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.Xr sysctl 3 ,
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.Xr disklabel 5
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.Sh HISTORY
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The
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.Fn getlabelsector
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and
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.Fn getlabeloffset
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functions appeared in
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.Nx 2.0 .
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