Re: xorriso, create an iso archive from a directory which has NTFS ACLs/xattr

[Thomas Schmitt]

Hi,

Kristaps Esterliņš wrote:
> service:/srv/backup/samba/service/service-13-09-2022# /home/src/acl_test
> service/Lietotājs/
> ACL_TYPE_DEFAULT :
> user::rwx
> ...
> ACL_TYPE_ACCESS :
> user::rwx
> ...

No error from acl_get_file(3) or acl_to_text(3). That's strange.
I had expected that a failure of these functions causes the xorriso error
message (actually the error is reported by libisofs).

Did you try with one of the files which were reported by xorriso ?
E.g.

  /home/src/acl_test 
/srv/backup/samba/service/service-13-09-2022/service/folder1/garantijuveidi.pdf

I will ponder about better diagnosis on the way to the error message
and about other possible reasons for the problem.

----------------------------------------------------------------------
Test proposal to find out whether the problem is with ACL at all:

After the original xorriso run with -for_backup, which reports the errors,
do you see ACL recorded with the problematic files ?

  xorriso -for_backup \
          -indev /srv/samba/service/folder/service-13.09.2022.iso \
          -getfacl /folder1/garantijuveidi.pdf --

(Or
  -getfacl 'folder1/garantiju veidi.pdf' --
if there is indeed a blank in the name. Your HTML text says:
  > '/srv/backup/samba/service/service-13-09-2022/service/folder1/garantij=
  u<br>
  &gt; veidi.pdf'<br>
)

If ACL were determined successfully, then the result should roughly look
like the result of getfacl(1) of ./acl_test with the original file .


If xorriso sees the non-trivial ACLs in the ISO then the problem was not
with ACL but possibly with xattr.
In this case try a xorriso ISO production run with

  -for_backup -xattr off

which is equivalent to

  -acl on -md5 on -hardlinks on

If this run emits no "Error with reading ACL or xattr", then the attempt to
read xattr by listxattr(2) would be the new suspect.
I would then make a test program similar to acl_test.c which exercises
the listxattr gesture from libisofs/aaip-os-linux.c .


Have a nice day :)

Thomas