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.Dd April 3, 2018 26.Dt ETDUMP 1 27.Os 28.Sh NAME 29.Nm etdump 30.Nd Dump El Torito boot catalog information from ISO images 31.Sh SYNOPSIS 32.Nm 33.Op Fl f Ar format 34.Op Fl o Ar file 35.Ar 36.Sh DESCRIPTION 37This program reads El Torito boot catalog information from an ISO image and 38outputs it in various formats. 39It can be used to check the catalog in an image or to output catalog data in 40a format that can be used by other tools such as shell scripts. 41.Pp 42Supported options are: 43.Bl -tag -width flag 44.It Fl f Ar format Fl -format Ar format 45Select the output format. 46Supported output formats are: 47.Bl -tag -width shell -offset indent 48.It Sy text 49Human-readable text (default) 50.It Sy shell 51Each boot entry is emitted as a string suitable for passing to a sh-compatible 52eval command. 53The variables emitted are: 54.Bl -tag -width et_platform -offset indent 55.It et_platform 56The platform ID from the section header. 57Set to 'default' for the initial (default) entry. 58.It et_system 59The system ID from the boot entry. 60.It et_lba 61The starting LBA (2048-byte blocks) of the boot image. 62.It et_sectors 63The number of sectors (512-byte sectors) that comprise the boot image. 64.El 65.El 66.It Fl o Ar file Fl -output Ar file 67Write output to 68.Ar file . 69If '-' is specified then standard out is used. 70.El 71.Sh EXAMPLES 72To see what entries are in a given boot catalog run 73.Nm 74passing the filename of the image as an argument like so: 75.Bd -literal -offset indent 76% etdump bootonly.iso 77Image in bootonly.iso 78Default entry 79 System i386 80 Start LBA 420 (0x1a4), sector count 4 (0x4) 81 Media type: no emulation 82 83Section header: efi, final 84 Section entry 85 System i386 86 Start LBA 20 (0x14), sector count 1600 (0x640) 87 Media type: no emulation 88.Ed 89.Pp 90To use the output in a shell script a for loop can be used to iterate over the 91entries returned using eval: 92.Bd -literal -offset indent 93for entry in `etdump --format shell bootonly.iso`; do 94 eval $entry 95 echo $et_platform $et_system $et_lba $et_sectors 96done 97.Ed 98