/usr/man2/cat.8/isodump.8.Z(/usr/man2/cat.8/isodump.8.Z)
NAME
devdump, isoinfo, isovfy, isodump - Utility programs for dumping and
verifying iso9660 images.
SYNOPSIS
devdump isoimage
isodump isoimage
isoinfo [ options ] [ find [ find expression ]]
isovfy isoimage
DESCRIPTION
devdump is a crude utility to interactively display the contents of
device or filesystem images. The initial screen is a display of the
first 256 bytes of the first 2048 byte sector. The commands are the
same as with isodump.
isodump is a crude utility to interactively display the contents of
iso9660 images in order to verify directory integrity. The initial
screen is a display of the first part of the root directory, and the
prompt shows you the extent number and offset in the extent.
You can use the 'a' and 'b' commands to move backwards and for-
wards within the image. The 'g' command allows you to goto an
arbitrary extent, and the 'f' command specifies a search string
to be used. The '+' command searches forward for the next
instance of the search string, and the 'q' command exits devdump
or isodump.
isoinfo is a utility to perform directory like listings of iso9660
images.
isovfy is a utility to verify the integrity of an iso9660 image. Most
of the tests in isovfy were added after bugs were discovered in early
versions of mkisofs. It isn't all that clear how useful this is any-
more, but it doesn't hurt to have this around.
OPTIONS
The options common to all programs are -help,-h,-version,
i=name,dev=name. The isoinfo program has additional command line
options. The options are:
-help
-h print a summary of all options.
-d Print information from the primary volume descriptor (PVD) of
the iso9660 image. This includes information about Rock Ridge,
Joliet extensions and Eltorito boot information if present.
-f generate output as if a 'find . -print' command had been run on
the iso9660 image. You should not use the -l image with the -f
option. The same output is created by calling isoinfo with
-find -print
-find find expression
This option acts a separator. If it is used, all isoinfo options
must be to the left of the -find option. To the right of the
-find option, mkisofs accepts the find command line syntax only.
If the find expression includes a -print or -ls promary, the -l
to isoinfo is ignored. If the find expression evaluates as
true, the selected action (e.g. list the ISO-9660 directory) is
performed.
-i iso_image
Specifies the path of the iso9660 image that we wish to examine.
The options -i and dev=target are mutual exclusive.
-ignore-error
Ignore errors. The commands by default aborts on several
errors, such as read errors. With this option in effect, the
commands try to continue. Use with care.
dev=target
Sets the SCSI target for the drive, see notes above. A typical
device specification is dev=6,0 . If a filename must be pro-
vided together with the numerical target specification, the
filename is implementation specific. The correct filename in
this case can be found in the system specific manuals of the
target operating system. On a FreeBSD system without CAM sup-
port, you need to use the control device (e.g. /dev/rcd0.ctl).
A correct device specification in this case may be
dev=/dev/rcd0.ctl:@ .
On Linux, drives connected to a parallel port adapter are mapped
to a virtual SCSI bus. Different adapters are mapped to differ-
ent targets on this virtual SCSI bus.
If no dev option is present, the program will try to get the
device from the CDR_DEVICE environment.
If the argument to the dev= option does not contain the charac-
ters ',', '/', '@' or ':', it is interpreted as an label name
that may be found in the file /etc/default/cdrecord (see FILES
section).
The options -i and dev=target are mutual exclusive.
-debug Print additional debug information. This enables e.g. printing
of all directory entries if a file has more than one directory
entry and printing of more information from the primary volume
descriptor.
In debug mode, Rock Ridge information is parsed with -R even if
it is not standard compliant.
-l generate output as if a 'ls -lR' command had been run on the
iso9660 image. You should not use the -f image with the -l
option.
The numbers in square brackets are the starting sector number as
decimal number (based on 2048 bytes per sector) and the iso9660
directory flags as hexadecimal number as follows:
0x00 A plain file (not really a flag).
0x01 Hide the file name from directory listings.
0x02 A directory.
0x04 An accociated file (e.g. an Apple resource fork).
0x08 Record format in extended attributes is used.
0x10 No read/execute permission in extended attributes.
0x20 reserved
0x40 reserved
0x80 Not the final entry of a multi extent file.
-N sector
Quick hack to help examine single session disc files that are to
be written to a multi-session disc. The sector number specified
is the sector number at which the iso9660 image should be writ-
ten when send to the cd-writer. Not used for the first session
on the disc.
-p Print path table information.
-R Extract information from Rock Ridge extensions (if present) for
permissions, file names and ownerships.
-s Print file size infos in multiples of sector size (2048 bytes).
-J Extract information from Joliet extensions (if present) for file
names.
-j charset
Convert Joliet file names (if present) to the supplied charset.
See mkisofs(8) for details.
-T sector
Quick hack to help examine multi-session images that have
already been burned to a multi-session disc. The sector number
specified is the sector number for the start of the session we
wish to display.
-X Extract files from the image and put them into the filesystem.
If the -find option is not used, all files are extracted.
The isoinfo program supports to extract all files, even multi
extent files (files > 4 GB).
Before extracting files using the -X option, it is recommended
to change the current directory to an empty directory in order
to prevent to clobber existing files.
-x pathname
Extract specified file to stdout. The pathname needs to start
with a shlash ('/') and in case of iso9660 names, must match the
full pathname of the file inluding the version number (usually
';1'). If the option -R has been specified and the filesystem
carries Rock Ridge attributes, the pathname must match the full
Rock Ridge pathname of the file.
AUTHOR
The author of the original sources (1993 ... 1998) is Eric Youngdale
<ericy@gnu.ai.mit.edu> or <eric@andante.jic.com> is to blame for these
shoddy hacks. Joerg Schilling wrote the SCSI transport library and its
adaptation layer to the programs and newer parts (starting from 1999)
of the utilities, this makes them Copyright (C) 1999-2004 Joerg
Schilling. Patches to improve general usability would be gladly
accepted.
BUGS
The user interface really sucks.
FUTURE IMPROVEMENTS
These utilities are really quick hacks, which are very useful for
debugging problems in mkisofs or in an iso9660 filesystem. In the long
run, it would be nice to have a daemon that would NFS export a iso9660
image.
The isoinfo program is probably the program that is of the most use to
the general user.
AVAILABILITY
These utilities come with the cdrtools package, and the primary down-
load site is https://sourceforge.net/projects/cdrtools/files/ and many
other mirror sites. Despite the name, the software is not beta.
ENVIRONMENT
CDR_DEVICE
This may either hold a device identifier that is suitable to the
open call of the SCSI transport library or a label in the file
/etc/default/cdrecord.
RSH If the RSH environment is present, the remote connection will
not be created via rcmd(3) but by calling the program pointed to
by RSH. Use e.g. RSH=/usr/bin/ssh to create a secure shell
connection.
Note that this forces the program to create a pipe to the rsh(1)
program and disallows the program to directly access the network
socket to the remote server. This makes it impossible to set up
performance parameters and slows down the connection compared to
a root initiated rcmd(3) connection.
RSCSI If the RSCSI environment is present, the remote SCSI server will
not be the program /opt/schily/sbin/rscsi but the program
pointed to by RSCSI. Note that the remote SCSI server program
name will be ignored if you log in using an account that has
been created with a remote SCSI server program as login shell.
FILES
/etc/default/cdrecord
Default values can be set for the following options in
/etc/default/cdrecord.
CDR_DEVICE
This may either hold a device identifier that is suitable
to the open call of the SCSI transport library or a label
in the file /etc/default/cdrecord that allows to identify
a specific drive on the system.
Any other label
is an identifier for a specific drive on the system.
Such an identifier may not contain the characters ',',
'/', '@' or ':'.
Each line that follows a label contains a TAB separated
list of items. Currently, four items are recognized: the
SCSI ID of the drive, the default speed that should be
used for this drive, the default FIFO size that should be
used for this drive and drive specific options. The val-
ues for speed and fifosize may be set to -1 to tell the
program to use the global defaults. The value for
driveropts may be set to "" if no driveropts are used. A
typical line may look this way:
teac1= 0,5,0 4 8m ""
yamaha= 1,6,0 -1 -1 burnfree
This tells the program that a drive named teac1 is at
scsibus 0, target 5, lun 0 and should be used with speed
4 and a FIFO size of 8 MB. A second drive may be found
at scsibus 1, target 6, lun 0 and uses the default speed
and the default FIFO size.
SEE ALSO
mkisofs(8), cdrecord(1), readcd(1), scg(7), rcmd(3), ssh(1).
Version 3.02 2015/11/02 ISOINFO(8)
See also devdump(8)
See also isoinfo(8)
See also isovfy(8)
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