1.\" $NetBSD: getfsspecname.3,v 1.5 2015/06/13 19:52:58 dholland Exp $ 2.\" 3.\" Copyright (c) 2012 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Christos Zoulas. 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.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" 31.Dd August 18, 2014 32.Dt GETFSSPECNAME 3 33.Os 34.Sh NAME 35.Nm getfsspecname 36.Nd get the underlying wedge name from a label 37.Sh LIBRARY 38.Lb libutil 39.Sh SYNOPSIS 40.In util.h 41.Ft const char * 42.Fn getfsspecname "char *buf" "size_t buflen" "const char *spec" 43.Sh DESCRIPTION 44The 45.Fn getfsspecname 46function translates an 47.Ft fs_spec 48field in the 49.Fa spec 50argument of the form 51.Dq NAME=wedgename 52to the underlying 53.Xr dk 4 54device node, and places the resulting pathname in 55.Fa buf 56up to len 57.Fa buflen . 58.Pp 59If the 60.Fa spec 61argument is not of the form 62.Dq NAME=wedgename , 63.Fa spec 64is copied 65to 66.Fa buf 67and returned. 68.Sh RETURN VALUES 69On success the absolute pathname of the underlying wedge device is returned, 70or the original 71.Fa spec 72argument. 73On failure 74.Dv NULL 75is returned and 76.Fa buf 77contains the reason for the error. 78.Sh SEE ALSO 79.Xr fstab 5 80.Sh HISTORY 81The 82.Fn getfsspecname 83function appeared in 84.Nx 7.0 . 85