Hi Jörg,
Hi all,
Is there any tool which can create udf file system image supporting
extended attributes? I tried mkudffs and mkisofs, but they all failed.
Hi,
what do you expect?
Since August 2006 mkisofs suports extended attributes for Mac OS.
Is this what you like?
Do you use the real mkisofs or one of the fake/outdated variants?
On linux platform I'd like to create an udf image and mount it to a directory,
then copy some files with extended attributes to the image. I hope the
extended attributes to be reserved on the udf file system.
The version of mkisofs I used is "mkisofs 3.02a10 2020/02/26
(x86_64-unknown-linux-gnu)". The following is what I did with mkisofs.
#Check the version of mkisofs
root@Ubuntu:x86_64-linux-gcc# ./mkisofs --version
mkisofs 3.02a10 2020/02/26 (x86_64-unknown-linux-gnu)
Copyright (C) 1993-1997 Eric Youngdale
Copyright (C) 1997-2019 Joerg Schilling
Copyright (C) 1997-2001 James Pearson
Copyright (C) 2006 HELIOS Software GmbH
#Set the extended attribute to the file.
root@Ubuntu:x86_64-linux-gcc# setfattr -n "trusted.udf.test" -v "1234"
./100M-file
root@Ubuntu:x86_64-linux-gcc# getfattr -d -m .* ./100M-file
# file: 100M-file
trusted.udf.test="1234"
#Make the udf image file
root@Ubuntu:x86_64-linux-gcc# ./mkisofs -o /tmp/a.udf -udf ./100M-file
9.69% done, estimate finish Fri Mar 20 21:09:54 2020
19.43% done, estimate finish Fri Mar 20 21:09:54 2020
29.10% done, estimate finish Fri Mar 20 21:09:54 2020
38.77% done, estimate finish Fri Mar 20 21:09:54 2020
48.44% done, estimate finish Fri Mar 20 21:09:54 2020
58.17% done, estimate finish Fri Mar 20 21:09:54 2020
67.84% done, estimate finish Fri Mar 20 21:09:54 2020
77.51% done, estimate finish Fri Mar 20 21:09:54 2020
87.18% done, estimate finish Fri Mar 20 21:09:54 2020
96.92% done, estimate finish Fri Mar 20 21:09:54 2020
Total translation table size: 0
Total rockridge attributes bytes: 0
Total directory bytes: 0
Path table size(bytes): 10
Max brk space used 0
51618 extents written (100 MB)
root@Ubuntu:x86_64-linux-gcc# mount /tmp/a.udf /mnt
mount: block device /tmp/a.udf is write-protected, mounting read-only
#Check the extended the attribute after mount the image file. But we got
nothing.
root@Ubuntu:x86_64-linux-gcc# getfattr -d -m .* /mnt/100M-file
root@Ubuntu:x86_64-linux-gcc#
The extended attribute is lost.
---
For the mkudffs I got the error with "Operation not supported" message.
root@Ubuntu:x86_64-linux-gcc# mkudffs -h
mkudffs 1.0.0b2 for UDF FS 1.0.0-cvs, 2002/02/09
root@Ubuntu:x86_64-linux-gcc# truncate -s 150M a.udf
root@Ubuntu:x86_64-linux-gcc# mkudffs ./a.udf
start=0, blocks=16, type=RESERVED
start=16, blocks=3, type=VRS
start=19, blocks=237, type=USPACE
start=256, blocks=1, type=ANCHOR
start=257, blocks=16, type=PVDS
start=273, blocks=1, type=LVID
start=274, blocks=76269, type=PSPACE
start=76543, blocks=1, type=ANCHOR
start=76544, blocks=239, type=USPACE
start=76783, blocks=16, type=RVDS
start=76799, blocks=1, type=ANCHOR
root@Ubuntu:x86_64-linux-gcc# getfattr -d -m .* ./100M-file
# file: 100M-file
trusted.udf.test="1234"
root@Ubuntu:x86_64-linux-gcc# cp --preserve ./100M-file /mnt/
root@Ubuntu:x86_64-linux-gcc# getfattr -d -m .* /mnt/100M-file
root@Ubuntu:x86_64-linux-gcc# setfattr -n "trusted.udf.test" -v "1234"
/mnt/100M-file
setfattr: /mnt/100M-file: Operation not supported
According to the specification of UDF version 2.01, this feature should be
supported. Is there something wrong with what I did?
Best Regards,
WF
