$NetBSD: getlabelsector.3,v 1.8 2011/09/14 11:43:29 njoly 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
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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
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.Dd August 25, 2011 .Dt GETLABELSECTOR 3 .Os .Sh NAME .Nm getlabelsector , .Nm getlabeloffset , .Nm getlabelusesmbr .Nd get disklabel location informations .Sh LIBRARY .Lb libutil .Sh SYNOPSIS n util.h .Ft daddr_t .Fn getlabelsector void .Ft off_t .Fn getlabeloffset void .Ft int .Fn getlabelusesmbr void .Sh DESCRIPTION The .Fn getlabelsector and .Fn getlabeloffset functions return values which describe the exact on-disk location of the .Xr disklabel 5 on the current system, or -1 on error. These functions supersede the hardcoded .Dv LABELSECTOR and .Dv LABELOFFSET definitions previously used to derive the location of the .Xr disklabel 5 .
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.
.Dd August 25, 2011 .Dt GETLABELSECTOR 3 .Os .Sh NAME .Nm getlabelsector , .Nm getlabeloffset , .Nm getlabelusesmbr .Nd get disklabel location informations .Sh LIBRARY .Lb libutil .Sh SYNOPSIS n util.h .Ft daddr_t .Fn getlabelsector void .Ft off_t .Fn getlabeloffset void .Ft int .Fn getlabelusesmbr void .Sh DESCRIPTION The .Fn getlabelsector and .Fn getlabeloffset functions return values which describe the exact on-disk location of the .Xr disklabel 5 on the current system, or -1 on error. These functions supersede the hardcoded .Dv LABELSECTOR and .Dv LABELOFFSET definitions previously used to derive the location of the .Xr disklabel 5 .
p The .Fn getlabelusesmbr returns 1 if the disklabel is located inside a MBR partition, 0 if it's stored relative to the start of the disk, or -1 on error. .Sh SEE ALSO .Xr sysctl 3 , .Xr disklabel 5 .Sh HISTORY The .Fn getlabelsector and .Fn getlabeloffset functions appeared in .Nx 2.0 .
Indexes created Sat Sep 20 22:09:52 GMT 2025