1.\" $NetBSD: getlabelsector.3,v 1.8 2011/09/14 11:43:29 njoly Exp $ 2.\" 3.\" 4.\" Copyright 2002 Wasabi Systems, Inc. 5.\" All rights reserved. 6.\" 7.\" Written by Steve C. Woodford for Wasabi Systems, Inc. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed for the NetBSD Project by 20.\" Wasabi Systems, Inc. 21.\" 4. The name of Wasabi Systems, Inc. may not be used to endorse 22.\" or promote products derived from this software without specific prior 23.\" written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd August 25, 2011 38.Dt GETLABELSECTOR 3 39.Os 40.Sh NAME 41.Nm getlabelsector , 42.Nm getlabeloffset , 43.Nm getlabelusesmbr 44.Nd get disklabel location informations 45.Sh LIBRARY 46.Lb libutil 47.Sh SYNOPSIS 48.In util.h 49.Ft daddr_t 50.Fn getlabelsector void 51.Ft off_t 52.Fn getlabeloffset void 53.Ft int 54.Fn getlabelusesmbr void 55.Sh DESCRIPTION 56The 57.Fn getlabelsector 58and 59.Fn getlabeloffset 60functions return values which describe the exact on-disk location of the 61.Xr disklabel 5 62on the current system, or \-1 on error. 63These functions supersede the hardcoded 64.Dv LABELSECTOR 65and 66.Dv LABELOFFSET 67definitions previously used to derive the location of the 68.Xr disklabel 5 . 69.Pp 70The 71.Fn getlabelusesmbr 72returns 1 if the disklabel is located inside a MBR partition, 0 if it's stored 73relative to the start of the disk, or \-1 on error. 74.Sh SEE ALSO 75.Xr sysctl 3 , 76.Xr disklabel 5 77.Sh HISTORY 78The 79.Fn getlabelsector 80and 81.Fn getlabeloffset 82functions appeared in 83.Nx 2.0 . 84