Christoph: /* See also */

2007-04-21T02:50:04Z

‎See also

Christoph at 02:47, 21 April 2007

2007-04-21T02:47:34Z

Christoph at 01:47, 21 April 2007

2007-04-21T01:47:10Z

New page

'''CDfs''' is a virtual Linux file system that provides access to individual data and audio tracks on compact discs. A compact disc mounted with the "cdfs" driver appears as a collection of files, each representing a single track. It supports the following track types:

*Red Book audio: Appears as a CDA file; reading from it will start the media player reading from the tracks. The CDA files aren't actual music files, they are 'shortcuts' to the invisible tracks on the audio CD.
*White Book video: Appears as a playable MPEG-1 file containing audio and video streams.
*Yellow Book data:
**Apple HFS: Appears as a mountable HFS file system image (sans partition table).
**ISO 9660: Each session appears as a mountable ISO image file.
**El Torito boot image: Appears as a floppy image file.

Cdfs is not included in the mainline [[Linux]] [[kernel]], but is distributed instead as a series of kernel patches.

On other Unices and operating systems such as Windows, cdfs can be the name of the ISO 9660 file system driver.

==Usage==
''Note: Most of the following is taken directly from the official website (with modifications).''

*If you mount the CD with the <tt>cdfs</tt> file system, you get the two sessions as files:
mount -t cdfs -o ro /dev/cdrom /mnt/cdfs

ls -l /mnt/cdfs
total 33389
-r--r--r-- 1 root root 33503232 2007-04-20 19:36 sessions_1-1.iso
-r--r--r-- 1 root root 34121728 2007-04-20 19:36 sessions_1-2.iso

*These files can then be mounted loop back:
mount -t iso9660 -o loop /cdfs/sessions_1-1.iso /mnt/loop1
mount -t iso9660 -o loop /cdfs/sessions_1-2.iso /mnt/loop2
and the file a can be accessed in both sessions

ls -l /mnt/loop1
total 9889
-r-xr-xr-x 1 root root 10104236 2007-04-20 17:34 a
ls -l /mnt/loop2
total 2
-r-xr-xr-x 1 root root 2 2007-04-20 19:16 a
-r-xr-xr-x 1 root root 2 2007-04-20 19:19 b

The file system also allows you to access data on faulty multi session disks, e.g. disk with multiple single sessions instead of a multi session (for instance created with [[mkisofs]] without the proper <code>-C</code> parameters).

*<code>track-?.wav</code>: an audio file. The file starts with a WAV-header and can be copied or played (by copying it to the audio device), e.g.:
mount -t cdfs -o ro /dev/cdrom /mnt/cdfs

ls -l /mnt/cdfs
total 0
-r--r--r-- 1 root root 42973392 2007-04-20 18:01 track-1.wav
-r--r--r-- 1 root root 65164512 2007-04-20 18:01 track-2.wav
-r--r--r-- 1 root root 71743056 2007-04-20 18:01 track-3.wav
-r--r--r-- 1 root root 66940272 2007-04-20 18:01 track-4.wav

[[SoX|sox]] /mnt/cdfs/track-1.wav -t ossdsp /dev/dsp

==See also==
*[[ISO Images]]
*[[mkisofs]]
*[[cdparanoia]]
*[[cdda2wav]]
*[[SoX]]

==External links==
*[http://trappist.elis.ugent.be/~mronsse/cdfs/ Official website]
*[http://www.elis.rug.ac.be/~ronsse/cdfs/download CDfs download/patches]

[[Category:Linux Command Line Tools]]

← Older revision		Revision as of 02:47, 21 April 2007
Line 49:		Line 49:

	[[SoX\|sox]] /mnt/cdfs/track-1.wav -t ossdsp /dev/dsp		[[SoX\|sox]] /mnt/cdfs/track-1.wav -t ossdsp /dev/dsp
		+
		+	==proc==
		+	''Note: The following is an example.''
		+	cat /proc/cdfs
		+	[cdfs 2.6.19]
		+	CD (discid=XXXXXXXX) contains 10 tracks:
		+
		+	Track 1: audio track (track-01.wav), [ 0 - 20987], length= 4:39
		+	Track 2: audio track (track-02.wav), [ 20988 - 39988], length= 4:13
		+	...

	==See also==		==See also==

@@ Line 65: / Line 65: @@
 *[[cdparanoia]]
 *[[cdda2wav]]
 *[[SoX]]

CDfs - Revision history

Christoph: /* See also */

Christoph at 02:47, 21 April 2007

Christoph at 01:47, 21 April 2007