.\" .\" Copyright (C) 1996 .\" interface business GmbH .\" Tolkewitzer Strasse 49 .\" D-01277 Dresden .\" F.R. Germany .\" .\" All rights reserved. .\" .\" Written by Joerg Wunsch .\" .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY .\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT .\" OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR .\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF .\" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE .\" USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH .\" DAMAGE. .\" .\" $Id: wormcontrol.8,v 1.7 1997/02/22 16:14:11 peter Exp $ .\" .\" arrgh, hilit19 needs this" :-( .Dd Jan 27, 1996 .Os .Dt WORMCONTROL 8 .Sh NAME .Nm wormcontrol .Nd control the CD-R driver .Sh SYNOPSIS .Nm wormcontrol .Op Fl f Ar device .Ar command .Op Ar params... .Sh DESCRIPTION .Ss Options .Bl -tag -ident -width "XXX" .It Fl f Ar device Use .Ar device instead of the default .Pa /dev/rworm0 . .El .Ss Overview The .Nm utility is used to control the behaviour of the .Xr worm 4 driver in order to adjust various parameters of a recordable CD .Pq CD-R . .Pp Unlike many other devices, CD-R's require a very strict handling order. Prior to writing data, the speed of the drive must be selected, and the drive can also be turned into a .Ql dummy mode, where every action is only performed with the laser turned off. This way, it's possible to test whether the environment provides a sufficiently high data flow rate in order to actually burn the CD-R, without destroying the medium in case of a catastrophic failure. .Pp In order to write a new track, the drive must be told whether the new track will become an audio or a data track. Audio tracks are written with a block size of 2352 bytes, while data tracks have 2048 bytes per block. There are actually more data formats available, but the driver currently does only support this .Em Yellow Book Mode 1 format. For audio tracks, the driver does further need to know whether the data are recorded with a preemphasis. .Pp Once all tracks of a session have been written, the disk must be .Em fixated . This writes the table of contents and leadout information to the disk. The disk won't be usable without doing this. .Ss Commands .Bl -tag -indent -width "prepdisk" .It select Ar vendor-id model-id Unfortunately, each CD-R drive vendor decided to implement a set of SCSI commands of his own. Thus, the .Xr worm 4 driver needs to know which set of .Ql quirk functions to use for a particular device. Currently, only devices that have quirk information statically compiled into the driver will work; it is however planned to make them available as loadable modules in the future. The .Em select command causes the driver to lookup the appropriate quirks. The driver matches the provided .Ar vendor-id and .Ar model-id against the list of known quirks. An error will be returned if no quirk record matches, and the device won't be usable for anything else until a quirk record has been successfully selected. .Pp By now, the vendor/model names of .Dq PLASMON \&/ .Dq RF4100 , .Dq PHILIPS \&/ .Dq CDD2000 , and .Dq HP \&/ .Dq 4020i are known. .It prepdisk Ar single \&| double Op Ar dummy Prepare the disk for recording. This must be done before any tracks can be prepared, and remains in effect until the session has been fixated. Either single speed .Pq for audio data or double speed .Pq for CD-ROM data must be selected, and optionally, the argument .Ar dummy can be used to tell the drive to keep the laser turned off, for testing. .It track Ar audio \&| data Op Ar preemp Inform the driver about the format of the next track. Either .Ar audio or .Ar data .Pq CD-ROM must be selected, with an optional argument .Ar preemp that must be specified for an audio track where data records with preemphasis are being used. Once this command has been successfully specified, the track is ready for being written. .It fixate Ar toc-type Op Ar onp Once all tracks have been written, this closes the current session. The argument .Ar toc-type is a single digit between 0 and 4, with the following meaning: .Bl -item .It 0 CD audio .It 1 CD-ROM .It 2 CD-ROM with first track in mode 1 .It 3 CD-ROM with first track in mode 2 .It 4 CDI .El .Pp The optional argument .Ar onp stands for .Dq open next program area , which means that the next session on the CD-R will be opened and can be recorded in the future. Otherwise, the CD-R will be closed and remains unchangeable. .El .Sh DIAGNOSTICS Error codes for the underlying .Xr ioctl 2 commands are printed by the .Xr perror 3 facility. .Sh EXAMPLES The typical sequence of burning a data CD-R looks like: .Bd -literal # wormcontrol select PLASMON RF4100 # wormcontrol prepdisk double # wormcontrol track data # rtprio 5 team -v 1m 5 < cdrom.image | rtprio 5 dd of=/dev/rworm0 obs=20k # wormcontrol fixate 1 .Ed .Pp Note that the .Xr dd 1 command above is mainly used in order to .Dq slice the data stream. It's particularly useful when recording audio data with their rather unusual blocksize. Since the underlying device is a .Em raw device, the blocksize used in that command must be an integral multiple of the CD-R blocksize. .Pp The mentioned command .Xr team 1 is not part of the base system, but comes extremely handy in order to pipe a constant data stream into the CD recorder. .Sh SEE ALSO .Xr dd 1 , .Xr team 1 , .Xr ioctl 2 , .Xr perror 3 , .Xr worm 4 .Pp .Pa /usr/share/examples/worm/* .Sh HISTORY .Nm Wormcontrol is currently under development. .Sh AUTHOR The program has been contributed by .ie t J\(:org Wunsch, .el Joerg Wunsch, Dresden.