This is correct; if the disc specifies permissions, they are used.  You
appear to have a brain dead recorder that specifies the wrong
permissions.  As you noted, you will need to override the permissions to
work around this, but it is not intended that permissions never be used
by default.

** Changed in: util-linux (Ubuntu)
       Status: New => Invalid

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  DVDs with restricted permissions are unreadable for normal user

Status in util-linux package in Ubuntu:

Bug description:
  I'm using 16.10. I have a DVD with strange permissions for the root

  michele@cassandra:~$ ls -l /media/michele
  total 2
  d--x--x--- 3 michele michele 88 gen  1  2004 SONY_DVD_RECORDER_VOLUME

  The DVD is readable e.g. on windows but with ubuntu while I can access
  it as root:

  root@cassandra:~# ls -l /media/michele/SONY_DVD_RECORDER_VOLUME/
  total 4
  dr-xr-xr-x 2 michele michele 3628 gen  1  2004 VIDEO_TS

  I cannot as the non-root user that is logged in when I insert the

  michele@cassandra:~$ ls -l /media/michele/SONY_DVD_RECORDER_VOLUME
  ls: cannot open directory '/media/michele/SONY_DVD_RECORDER_VOLUME': 
Permission denied

  Looking at the mount options it seems to me that this is a regression
  for bug #10550. The options used by udisks2 are:

  root@cassandra:~# mount |grep SONY
  /dev/sr0 on /media/michele/SONY_DVD_RECORDER_VOLUME type udf 

  while my understanding from bug #10550 is that I should have also
  mode=0777 and dmode=0777

  And indeed this works:

  root@cassandra:~# mount -t udf -o
  /dev/sr0 ~michele/z

  michele@cassandra:~$ ls -l ~michele/z
  total 4
  drwxrwxrwx 2 michele michele 3628 gen  1  2004 VIDEO_TS

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