[arch-general] CD eject as non-root user

[Philipp Überbacher]

Excerpts from Heiko Baums's message of 2011-08-18 19:03:19 +0200:
> Am Thu, 18 Aug 2011 13:44:23 -0300
> schrieb Norbert Zeh <nzeh at cs.dal.ca>:
> 
> > I have a strange problem with ejecting CDs from my CD drive.
> > 
> > As root:
> > 
> > eject and eject -t work flawlessly
> > eject -T gives
> > 
> >     ioctl: Input/output error
> > 
> > As non-root user:
> > 
> > eject -t closes the tray as expected
> > eject gives
> > 
> >     eject: unable to eject, last error: Inappropriate ioctl for device
> > 
> > eject -T gives the same result as for root
> > 
> > It doesn't matter whether I do or do not specify sr0 as the device to
> > eject.  The non-root user that I try to execute this command as is in
> > the optical group.
> >
> > ...
> > 
> > Does anybody else experience this type of problem?  Does anybody have
> > any pointers what may be wrong with my setup?
> 
> Eject only works for root. So you have to use sudo to be able to
> ejecting the CDs.
> 
> Heiko

Definitely not true, it works here without being root, but:
$ eject
eject: unable to find or open device for: `cdrom'

$ eject /dev/sr0
works

$ eject -T /dev/sr0 (while tray is ejected)
eject: CD-ROM tray close command failed: Input/output error

$ sudo eject -T /dev/sr0
Password: 
eject: CD-ROM tray close command failed: Input/output error

or anything else that should pull the tray back in doesn't work on my
machine, according to 'man eject' this may simply be a hardware
limitation.

Nothing was mounted in my test case, there's no CD inserted. I do
somewhat understand the behavior of my machine but not the behavior on
the original posters machine. In any case, root/sudo is not required.