1.\" Copyright (c) 2018 iXsystems, Inc 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd April 25, 2018 28.Dt ETDUMP 8 29.Os 30.Sh NAME 31.Nm etdump 32.Nd Dump El Torito boot catalog information from ISO images 33.Sh SYNOPSIS 34.Nm 35.Op Fl f Ar format 36.Op Fl o Ar file 37.Ar 38.Sh DESCRIPTION 39This program reads El Torito boot catalog information from an ISO image and 40outputs it in various formats. 41It can be used to check the catalog in an image or to output catalog data in 42a format that can be used by other tools such as shell scripts. 43.Pp 44Supported options are: 45.Bl -tag -width flag 46.It Fl f Ar format Fl -format Ar format 47Select the output format. 48Supported output formats are: 49.Bl -tag -width shell -offset indent 50.It Sy text 51Human-readable text (default) 52.It Sy shell 53Each boot entry is emitted as a string suitable for passing to a sh-compatible 54eval command. 55The variables emitted are: 56.Bl -tag -width et_platform -offset indent 57.It et_platform 58The platform ID from the section header. 59Set to 'default' for the initial (default) entry. 60.It et_system 61The system ID from the boot entry. 62.It et_lba 63The starting LBA (2048-byte blocks) of the boot image. 64.It et_sectors 65The number of sectors (512-byte sectors) that comprise the boot image. 66.El 67.El 68.It Fl o Ar file Fl -output Ar file 69Write output to 70.Ar file . 71If '-' is specified then standard out is used. 72.El 73.Sh EXAMPLES 74To see what entries are in a given boot catalog run 75.Nm 76passing the filename of the image as an argument like so: 77.Bd -literal -offset indent 78% etdump bootonly.iso 79Image in bootonly.iso 80Default entry 81 System i386 82 Start LBA 420 (0x1a4), sector count 4 (0x4) 83 Media type: no emulation 84 85Section header: efi, final 86 Section entry 87 System i386 88 Start LBA 20 (0x14), sector count 1600 (0x640) 89 Media type: no emulation 90.Ed 91.Pp 92To use the output in a shell script a for loop can be used to iterate over the 93entries returned using eval: 94.Bd -literal -offset indent 95for entry in `etdump --format shell bootonly.iso`; do 96 eval $entry 97 echo $et_platform $et_system $et_lba $et_sectors 98done 99.Ed 100.Sh HISTORY 101The 102.Nm 103utility first appeared in 104.Fx 11.2 105