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Re: Does cdrdao work as normal user? (Response)



Bob Agel wrote:
Looks like it works in FC6-T2 - here's the response:

[bob localhost ~]$ eject -t ; cdrdao blank --device /dev/cdrom
--simulate
Cdrdao version 1.2.1 - (C) Andreas Mueller <andreas daneb de>
  SCSI interface library - (C) Joerg Schilling
  Paranoia DAE library - (C) Monty

Check http://cdrdao.sourceforge.net/drives.html#dt for current driver
tables.

Using libscg version 'schily-0.8'

/dev/cdrom: LITE-ON CD-RW SOHR-5239V    Rev: 2$09
Using driver: Generic SCSI-3/MMC - Version 2.0 (options 0x0000)

Blanking disk...
ERROR: Cannot erase CD-RW.
ERROR: Blanking failed.

Bob


On Wed, 2006-09-06 at 05:26 -0700, Antonio Olivares wrote:
Sorry I have created a new thread with the same
heading and attached a (Response) to it.  I accidently
deleted the original poster's message, which was
from
https://www.redhat.com/archives/fedora-test-list/2006-September/msg00108.html
==========
 I posted this question last week with no reply. Could
someone check whether cdrdao in FC6t2 works as a
normal user? For example, try a fake blank operation
by putting a CD-RW in the drive and running

eject -t ; cdrdao blank --device /dev/cdrom --simulate

as a normal user.  In FC5 this gives the error message

cdrdao: Operation not permitted. Cannot send SCSI cmd
via ioctl

as mentioned in

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=191684

=====

[olivares localhost ~]$ eject -t ; cdrdao blank
--device /dev/cdrom --simulate
Cdrdao version 1.2.1 - (C) Andreas Mueller
<andreas daneb de>
  SCSI interface library - (C) Joerg Schilling
  Paranoia DAE library - (C) Monty

Check http://cdrdao.sourceforge.net/drives.html#dt for
current driver tables.

Using libscg version 'schily-0.8'

/dev/cdrom: LITE-ON DVDRW LDW-451S      Rev: GSB4
Using driver: Generic SCSI-3/MMC - Version 2.0
(options 0x0000)

Blanking disk...

[olivares localhost ~]$


Regards,

Antonio
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Thank you for both replies. I'm guessing that the failure to blank in the second reply was due to the disc being mounted during the write attempt. Like cdrecord, cdrdao requires the disc to be unmounted when it tries to write. Unlike cdrecord, it doesn't close the drive door automatically, which is what the "eject -t" is for (the idea is to make sure the write command runs immediately after the door closes, before the automount happens).


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