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.\" $NetBSD: getfsspecname.3,v 1.3 2012/04/07 16:22:42 christos Exp $
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2012-04-07 08:04:21 +04:00
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.\"
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.\" Copyright (c) 2012 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Christos Zoulas.
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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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.\"
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.Dd March 6, 2012
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.Dt GETFSSPECNAME 3
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.Os
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.Sh NAME
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.Nm getfsspecname
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.Nd get the underlying wedge name from a label
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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 const char *
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.Fn getfsspecname "char *buf" "size_t buflen" "const char *spec"
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.Sh DESCRIPTION
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The
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.Fn getfsspecname
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function translates an
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.Ft fs_spec
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field in the
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.Fa spec
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argument of the form
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.Dq NAME=wedgename
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to the underlying
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.Xr dk 4
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device node, and places the resulting pathname in
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.Fa buf
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up to len
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.Fa bufsiz .
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.Pp
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If the
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.Fa spec
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argument is not of the form
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.Dq NAME=wedgename ,
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.Fa spec
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is copied
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to
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.Fa buf
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and returned.
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.Sh RETURN VALUES
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On success the absolute pathname of the underlying wedge device is returned,
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or the original
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.Fa spec
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argument.
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On failure
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.Dv NULL
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is return and
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.Fa buf
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contains the reason for the error.
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.Sh SEE ALSO
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.Xr fstab 5
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.Sh HISTORY
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The
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.Fn getfsspecname
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function appeared in
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.Nx 7.0 .
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