Cannot mount Volume cd9660

[Barnie]

Hello!
If I insert a Data-CD into the CD-RW-Drive, I get a dialog that say:

"Cannot mount volume"
Unable to mount the volume 'xyz'.
Details:
mount_cd9660: /dev/acd0: Operation not permitted.

I'm using Gnome 2.20.1 on FreeBSD 6.3.
I have followed the instractions in http://www.freebsd.org//gnome/docs/faq2.html#q1.
Added gnome_enable="YES" to /etc/rc.conf.

The user haldaemon was not installed while HAL and DBUS need it, is this a bug? So I have added a haldaemon user.

Now I can mount USB-Flashmemory devices but no CD-ROMs.
What should I do to mount CDs as user?

[gnemmi]

Did you grant yourself permission to mount said device on /etc/devfs.conf?


[gonzalo@inferna ~]% grep -v # /etc/devfs.conf
perm /dev/cd0 0666
perm /dev/pass0 0666
perm /dev/xpt0 0666
perm /dev/mdctl 0666
perm /dev/md0 0666

[SeanC]

You need root privileges to mount devices.

See also:
http://www.freebsd.org/doc/en/books/handbook/mount-unmount.html

[gnemmi]

Not really ... you just have to set the permissions right ...

Here you go ..:
http://www.freebsd.org/cgi/man.cgi?query=devfs.conf&apropos=0&sektion=0&manpath=FreeBSD+7.0-RELEASE&format=html

[Barnie]

Did you grant yourself permission to mount said device on /etc/devfs.conf?

Thanks for your post. But it doesn't work, I get the same message box. I have wrote this in /etc/devfs.conf and reboot:
perm /dev/acd0 0666
Is an "own" setting in devfs.conf needed? Who needs the permission? Me (the user) or the haldaemon?

[mdma]

i got this working through PolicyKit.conf (/usr/local/etc/PolicyKit/PolicyKit.conf) and adding proc to /etc/fstab.

check http://www.freebsd.org/gnome/docs/halfaq.html part 2.

i think the devfs.conf permissions stuff is required for cd burning (which u will still need later)

p.s. not to mention you still need hald + dbus in rc.conf

p.p.s if all still fails, atapicam in kernel???

[gnemmi]

Is an "own" setting in devfs.conf needed? Who needs the permission? Me (the user) or the haldaemon?

Not really .. you just gave rw perms on /dev/acd0 to everybody (0666) ...

You should use "own" only if you want to set ownership on the device (eg. create a cdrom group, then "own /dev/acd0 root:cdrom", then "perm /dev/acd0 0660", then make yourself and the users you want to members of the cdrom group ...)

Where are you trying to mount /dev/acd0?

Are you aware that the user mounting the device should be the owner of the mounting point (eg. create a ~/mnt/cdrom dir and then try mounting /dev/acd0 on it ... "mount_cd9660 /dev/acd0 ~/mnt/cdrom")?

If it works, you can add something like this to /etc/fstab:


/dev/acd0 /home/your_user_name/mnt/cdrom cd9660 rw,noauto 0 0


and something like this to your .cshrc:


alias mcdrom 'mount -t cd9660 /dev/acd0 ~/mnt/cdrom && cd ~/mnt/cdrom && ls'
alias ucdrom 'cd ~ && umount ~/mnt/cdrom'


This is the short way .. the longer one is the one mdma pointed out (Policykit).

[Barnie]

Not really .. you just gave rw perms on /dev/acd0 to everybody (0666) ...
This is good and intended. :)

Where are you trying to mount /dev/acd0?
I don't mount anything! I insert the Data-CD, the CD-drive rotates and seconds later I see a message dialog as written in my first post. I think it is an automount from HAL and D-BUS of GDM.

And as said: it works with USB flash devices very well. I plug in the device, and I see seconds later a removabel USB device in the Gnome desktop or Nautilus. Easy and great!

Are you aware that the user mounting the device should be the owner of the mounting point (eg. create a ~/mnt/cdrom dir and then try mounting /dev/acd0 on it ... "mount_cd9660 /dev/acd0 ~/mnt/cdrom")?
hem... this is realy complex if I only want to read a Data-CD. :x But I will try it!:)

[SeanC]

Not really ... you just have to set the permissions right ...

Here you go ..:
http://www.freebsd.org/cgi/man.cgi?query=devfs.conf&apropos=0&sektion=0&manpath=FreeBSD+7.0-RELEASE&format=html

I am still learning, too. Thanks for the hint.

[Barnie]

p.s. not to mention you still need hald + dbus in rc.conf
Yes, hald and dbus is up and runing at boot time.

p.p.s if all still fails, atapicam in kernel???
I have the generic kernel. I haven't changed this. And reading a Data-CD as root is still possible. So it's not a hardware or driver issue... Only a setting.

[Mel_Flynn]

You have an entry for /dev/acd0 in /etc/fstab. Delete it or comment it out.

The reason you are getting "operation not permitted" rather then "permission denied" which you would get for wrong permissions in /dev/, is that the sysctl variable vfs.usermount is 0.

hald runs as root, and will take care of mounting if there is no entry in /etc/fstab, however, if there is it will call the mount command as the running user.

[Barnie]

You have an entry for /dev/acd0 in /etc/fstab. Delete it or comment it out.

Super! This has helped and it works now! Thanks!:beer