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cdrskin

Limited cdrecord compatibility wrapper for libburn

Purpose:

Burns preformatted data to CD-R or CD-RW

Hardware requirements:

A CD recorder suitable for libburn.pykix.org (SCSI or IDE/ATAPI writers compliant to mmc standard).

Software requirements :

Linux kernel 2.4 or higher: With kernel 2.4 the drive has to be under ide-scsi emulation.; With kernel 2.6 the drive should not be under ide-scsi.
libpthread: is supposed to be a standard system component.

GPL software included:

libburn-0.2.2: (by Derek Foreman, Ben Jansens, and team of libburn.pykix.org); transfers data to CD

This program system has been tested on Intel/AMD Linux systems only.
Ports to other usable systems are appreciated. Reports are welcome.

Special features:

Source code is independent of cdrecord

Commands:

The goal is to provide some of cdrecord's options in a compatible way. This has been achieved quite sufficiently for the needs of backup tool scdbackup and for data CD projects of K3b (see examples). Further enhancements depend on people who can describe and discuss their wishes as well as on the development of libburn.
cdrskin -help: reports the cdrecord compatible options
cdrskin --help: reports the non-cdrecord options
man cdrecord: documents the standard for which cdrskin is striving. Do not bother Joerg Schilling with any cdrskin problems. (Be cursed if you install cdrskin as "cdrecord" without clearly forwarding this "don't bother Joerg" demand.)
Currently (and sparsely) supported gestures :: $ cdrskin -scanbus; $ cdrskin dev=1,1,0 -checkdrive; $ cdrskin dev=1,1,0 -atip; $ cdrskin -v dev=1,1,0 blank=all -eject; $ cdrskin -v dev=1,1,0 blank=fast -eject; $ cdrskin -v dev=1,1,0 speed=12 fs=8m -sao driveropts=burnfree -eject padsize=300k my_image.iso; $ cdrskin -v dev=1,1,0 ... ... track_1.iso padsize=300k track_2.afio; $ find . | afio -oZ - | cdrskin -v dev=1,1,0 fs=32m speed=8 -sao driveropts=burnfree padsize=300k tsize=650m -

Known deficiencies:

Option -audio is enabled but by default not advertised via option -help, because no beheading of .au or .wav files takes place yet.
Note: In development version 0.2.3 there is automatic extraction of .wav files but not of .au.
Burns only a single closed session. No -multi option yet.
No TAO mode and therefore no writing on-the-fly without a predefined source size.
cdrskin -scanbus or --devices hangs for quite a while if there is a CD drive which does not work properly (e.g. because it has individual problems with DMA). So if the superuser gets no result with cdrskin --devices then one should disable DMA with the problematic CD drives (like: hdparm -d0 /dev/hdd ) and try again.
In severe cases it might be necessary to guess the device name /dev/sgN resp. /dev/hdX of the non-ill burner if it cannot be found otherwise among its ill peers. Alternatively one can guess the address of the ill device, remove rw-permissions and retry the bus scan as non-superuser.

Download as source code (see README):

cdrskin-0.2.2.tar.gz (450 KB).

The "stable" cdrskin tarballs are source code identical with "stable" libburn releases or with "stabilized" libburn SVN snapshots. They get produced via a different procedure, though.
cdrskin is part of libburn - full libburn is provided with cdrskin releases.

Download as single x86 binaries (untar and move to /usr/bin/cdrskin):

cdrskin_0.2.2-x86-suse9_0.tar.gz, (60 KB),

runs on SuSE 9.0 (2.4.21) , RIP-14.4 (2.6.14) , Gentoo (2.6.15 x86_64 Athlon).

cdrskin_0.2.2-x86-suse9_0-static.tar.gz, (250 KB), -static compiled,

runs on SuSE 7.2 (2.4.4), and on the systems above.

Documentation:: README a short introduction; cdrskin --help non-cdrecord options; cdrskin -help cdrecord compatible options

Contact:: Thomas Schmitt, scdbackup@gmx.net

License:: GPL, an Open Source approved license

Development snapshot, version 0.2.3 :

Contains non-critical bug fix about failure to eject.

Enhancements towards stable version:

cdrecord compatibility with addresses of form [ATA:]Bus,Target,Lun.
Drives adressable via links and device siblings (/dev/cdrom , /dev/scd0).
Comments and empty lines allowed in startup files.
Options -scanbus and --devices print SORRY messages about busy drives.
Track source files with ending .wav are checked for compliance and extracted automatically.
Drive buffer fill indicator reports are realistic percentage numbers.
Option -toc is supported, drive firmware revision gets displayed.

README 0.2.3

cdrskin_0.2.3 --help

cdrskin_0.2.3 -help

Maintainers of cdrskin unstable packages please use SVN of libburn.pykix.org

Download: svn co http://libburn-svn.pykix.org/trunk libburn_pykix

Build: cd libburn_pykix ; ./bootstrap ; ./configure ; make

Build of SVN versions needs autotools of at least version 1.7 installed. But after the run of ./bootstrap, only vanilla tools like make and gcc are needed.

The following downloads are intended for adventurous end users or admins with full system souvereignty.

Source (./bootstrap is already applied, build tested, for more see above upcoming README ):

cdrskin-0.2.3.tar.gz (500 KB).

Binary (untar and move to /usr/bin/cdrskin):

cdrskin_0.2.3-x86-suse9_0.tar.gz, (60 KB).

cdrskin_0.2.3-x86-suse9_0-static.tar.gz, (260 KB)

Many thanks to Joerg Schilling for cdrecord,
and to Derek Foreman and Ben Jansens for creating libburn.
Historic versions based on Derek's and Ben's icculus.org/burn :
cdrskin-0.1.2.0.2.ts.tar.gz
cdrskin-0.1.3.0.2.ts.tar.gz

Example for a setup of device permissions. To be done by the superuser:
(CD devices which offer no r-permission are invisible to normal users.)
(CD devices which offer no w-permission are not useable.): # cdrskin --devices; ...; 0 dev='/dev/sg0' rwrwr- : 'TEAC' 'CD-ROM CD-532S'; 1 dev='/dev/hdc' rwrw-- : 'LITE-ON' 'LTR-48125S'; # chmod a+rw /dev/sg0 /dev/hdc

Example how to setup K3b to use cdrskin for burning data CD projects.
(K3b is a GUI frontend which uses cdrecord for CD burning.)

Example for a test session with a cdrecord based scdbackup installation:: $ cdrskin -scanbus; ...; scsibus1:; 1,0,0 0) 'TEAC' 'CD-ROM CD-532S' '?' Removable CD-ROM; scsibus2:; 2,2,0 1) 'LITE-ON' 'LTR-48125S' '?' Removable CD-ROM; $ export SCDBACKUP_SCSI_ADR="2,2,0"; $ export SCDBACKUP_CDRECORD="cdrskin -v -v tao_to_sao_tsize=650m"; $ scdbackup_home

Example for a permanent configuration of cdrskin based scdbackup: $ cd scdbackup-0.8.6/inst; $ export SCDBACKUP_USE_CDRSKIN=1; $ export SCDBACKUP_EJECT_ADR=/dev/cdrecorder; $ ./CONFIGURE_CD; ...; cdrskin 0.2.2 : limited cdrecord compatibility wrapper for libburn; ...; ------------------- SCSI devices. To be used like 0,0,0

If your system is stricken with some ill CD device then this can stall and you will have to press Ctrl+C to abort. In this case, you may execute export SCDBACKUP_NO_SCANBUS=1 and try again.

: 1,0,0 0) 'TEAC' 'CD-ROM CD-532S' '?' Removable CD-ROM; 2,2,0 1) 'LITE-ON' 'LTR-48125S' '?' Removable CD-ROM; ------------------- end of SCSI device list; ...; * Your cdrecord offers -driveropts=burnfree with your recorder.; ...; scdbackup for CD 0.8.6 : First stage of installation done.; ...; Now give it a try. Run : scdbackup_home; $ unset SCDBACKUP_USE_CDRSKIN SCDBACKUP_EJECT_ADR

To get back to using cdrecord :: $ cd scdbackup-0.8.6/inst; $ export SCDBACKUP_USE_CDRSKIN=0; $ ./CONFIGURE_CD; ...; $ unset SCDBACKUP_USE_CDRSKIN