Mailinglist Archive: opensuse-factory (175 mails)

[Jan Ritzerfeld <suse@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Am Freitag, 11. Juli 2008 schrieb Carlos E. R.:

> The Friday 2008-07-11 at 10:08 +0200, Oddball wrote:
> > It will only mount readonly.
> > mount tells me it is write protected, but i allready knew that from
> > K3B...
>
> To access /dev/sr0 rw you have to change its permissions for the group,
> or add your user to the group.

You do not have to do anything like this at least since SuSE 8.2!
http://en.opensuse.org/SDB:8.2_Resource_Manager

> Normally the login process changes the 
> ownership of the device to the user owning the desktop,

Not anymore.
jan@karl:~> l /dev/sr0
brw-rw----+ 1 root disk 11, 0 11. Jul 2008  /dev/sr0
          ^ (ACL)
Some time ago, there was the file /etc/logindevperms that changed device 
permissions (pam_devperm).

> but I don't know 
> exactly who is responsible for this change nowdays.

For the basic changes (owner, group, mode): udev.
For ACL (indicated by the '+'): hal/hal-resmgr.
jan@karl:~> getfacl /dev/sr0
getfacl: Removing leading '/' from absolute path names
# file: dev/sr0
# owner: root
# group: disk
user::rw-
user:jan:rw-
group::r--
mask::rw-
other::---

So, the owner is root, but the current desktop user (that's me) has read and 
write access, too. This is at least true for 10.3 and I doubt that 11.0 
reverted to the old way of granting access to devices.

Gruß
 Jan
-- 
Humpty Dumpty was pushed.
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