82 lines
2.9 KiB
Groff
82 lines
2.9 KiB
Groff
.\" Copyright (c) 2017 Netflix, Inc
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.\" All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd December 1, 2017
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.Dt EFIDP 8
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.Os
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.Sh NAME
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.Nm efidp
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.Nd UEFI Device Path manipulation
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.Sh SYNOPSIS
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.Nm
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.Op Fl fp
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.Op Fl -parse
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.Op Fl -format
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.Sh DESCRIPTION
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This program converts
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.Dq Unified Extensible Firmware Interface
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.Pq UEFI
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Device Paths, as defined in the UEFI standard, to and from binary form.
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Binary and textual forms are defined in Chapter 9 of the UEFI
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Specification.
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.Pp
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.Bl -tag -width 20m
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.It Fl f Fl -format
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Formats a binary UEFI Device Path into its canonical UTF-8 textual form.
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A binary Device Path can be no longer than 65536 bytes.
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The textual form must fit into 65536 bytes.
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Multiple binary device paths may be specified.
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.It Fl p Fl -parse
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Parses a UEFI Device Path UTF-8 specification and outputs the binary
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Device Path form.
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Only one device path is parsed, even if there are multiple present in
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the input.
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Leading white space is ignored.
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The resulting binary Device Path can be no longer than 65536 bytes.
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Multiple lines may be specified.
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Each one will be translated.
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.It Fl e Fl --to-efi
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Translate a Unix file path to an EFI Device Path.
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The output is the textual representation of the EFI Device Path.
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.It Fl u Fl --to-unix
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Translate an EFI device path to a Unix file path.
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The input is the textual representation of the EFI Device Path.
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.El
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.Sh SEE ALSO
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Appendix A of the UEFI specification has the format for GUIDs.
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All GUIDs
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.Dq Globally Unique Identifiers
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have the format described in RFC 4122.
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.Pp
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The Unified Extensible Firmware Interface Specification is available
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from
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.Pa www.uefi.org .
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Fx 11.1 .
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