Re: UDF (DVD fs)

2000-07-05 Thread David Miller

On Sun, 2 Jul 2000, Soren Schmidt wrote:

 It seems Julian Elischer wrote:
  I am working on UDF support.
  I have at present a program that reads a udf filesystem
  and am working (today) on making it into an "mtools" like
  program that allows access to the contents in a useful manner.
  
  I will eventually turn this into a  (readonly) filesystem, and it 
  is designed with that in mind (it uses a buffer cache etc, like 
  the kernel.  (in other words I'm prototyping).
  
  I will at some stage also try make a UDF creation module for mkisofs
  as well.
 
 Uhm, the real value of UDF is that it can be used as a "real" rw
 filesystem on CDRW/DVDRAM media, if this is not implemented the
 value of having UDF is very limited IMHO

Another value of UDF is interoperability with the redmond virii which
don't recognize 2.2 GB 9660 file systems.  I have to duplicate 4.x GB of
mpeg2 files onto 30+ copies of DVD-ram, and being able to do it as UDF
instead of having to format UDF on an NT box and copying the files before
duping a disk image would save me at least one headache:)

--- David



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Re: UDF (DVD fs)

2000-07-02 Thread Soren Schmidt

It seems Coleman Kane wrote:
 Hello, is anyone currently working on code to implement the UDF
 filesystem? For those not familiar with it, it is the filesystem that
 DVDs use. I'd like to look into getting the support under FreeBSD, since
 the players already seem to work. If no one is working on this, then I
 could probably use some help in writing the code to support this fs.

I think Julian Elischer is working on UDF..
However to play/read/use DVD's you dont need UDF, they are also
readable as an ISO9660, but that might change in the future...

-Søren


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Re: UDF (DVD fs)

2000-07-02 Thread Julian Elischer

I am working on UDF support.
I have at present a program that reads a udf filesystem
and am working (today) on making it into an "mtools" like
program that allows access to the contents in a useful manner.

I will eventually turn this into a  (readonly) filesystem, and it 
is designed with that in mind (it uses a buffer cache etc, like 
the kernel.  (in other words I'm prototyping).

I will at some stage also try make a UDF creation module for mkisofs
as well.

In the meanwhile you should be able to mount most modern DVDs using
the ISO9660 filesystem as they should be "bridge" format, (in which
there is metadata for both types of filesystems).

Julian


Coleman Kane wrote:
 
 Hello, is anyone currently working on code to implement the UDF
 filesystem? For those not familiar with it, it is the filesystem that
 DVDs use. I'd like to look into getting the support under FreeBSD, since
 the players already seem to work. If no one is working on this, then I
 could probably use some help in writing the code to support this fs.
 
 --
 Coleman Kane
 President,
 UC Free O.S. Users Group - http://pohl.ececs.uc.edu
 
 ---
 
Part 1.2   Type: application/pgp-signature

-- 
  __--_|\  Julian Elischer
 /   \ [EMAIL PROTECTED]
(   OZ) World tour 2000
 )_.---._/  presently in:  Budapest
v


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Re: UDF (DVD fs)

2000-07-02 Thread Soren Schmidt

It seems Julian Elischer wrote:
 I am working on UDF support.
 I have at present a program that reads a udf filesystem
 and am working (today) on making it into an "mtools" like
 program that allows access to the contents in a useful manner.
 
 I will eventually turn this into a  (readonly) filesystem, and it 
 is designed with that in mind (it uses a buffer cache etc, like 
 the kernel.  (in other words I'm prototyping).
 
 I will at some stage also try make a UDF creation module for mkisofs
 as well.

Uhm, the real value of UDF is that it can be used as a "real" rw
filesystem on CDRW/DVDRAM media, if this is not implemented the
value of having UDF is very limited IMHO

 In the meanwhile you should be able to mount most modern DVDs using
 the ISO9660 filesystem as they should be "bridge" format, (in which
 there is metadata for both types of filesystems).

Endeed, makeing a ro UDF filesystem more or less useless :)

-Søren


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Re: UDF (DVD fs)

2000-07-02 Thread Julian Elischer

Soren Schmidt wrote:
 
 It seems Julian Elischer wrote:

 
 Indeed, makeing a ro UDF filesystem more or less useless :)

I will be adding read/write later..
One must be able to walk before running!

As for RO UDF, it is useful for reading UDF2.0.1 cds that don't
have ISO9660 on them (I have one here).


The experience of looking at how the other vendors
do read/write (especially adaptec) in order to be able to read their
disks will be used to make it writable.

 
 -Søren

-- 
  __--_|\  Julian Elischer
 /   \ [EMAIL PROTECTED]
(   OZ) World tour 2000
 )_.---._/  presently in:  Budapest
v


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Re: UDF (DVD fs)

2000-07-02 Thread Coleman Kane

Soren Schmidt had the audacity to say:
 
 Uhm, the real value of UDF is that it can be used as a "real" rw
 filesystem on CDRW/DVDRAM media, if this is not implemented the
 value of having UDF is very limited IMHO


Not necessarily, since the cd9660 backward compatibility is not a
requirement of the standard. I have Pulp Fiction here, and it doesn't
work, because it has no 9660 compatibility.

  In the meanwhile you should be able to mount most modern DVDs using
  the ISO9660 filesystem as they should be "bridge" format, (in which
  there is metadata for both types of filesystems).
 
 Endeed, makeing a ro UDF filesystem more or less useless :)
 
 -Søren
 

-- 
Coleman Kane
President, 
UC Free O.S. Users Group - http://pohl.ececs.uc.edu


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