Access to cd device denied for cdp

[Daniel J Walsh]

Andrew Farris wrote:

>Playing a cd from the terminal using cdp, or cdplay (non-interactive),
>results in the following avc in permissive mode (but the cd is allowed
>to play):
>
>Apr 26 15:09:24 CirithUngol kernel: audit(1083017364.035:0): avc:
>denied  { ioctl } for  pid=10129 exe=/usr/bin/cdp path=/dev/hdc dev=hdb8
>ino=66203 scontext=user_u:user_r:user_t
>tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file
>  
>

Please put in a bugzilla.  The problem is that /dev/hdc is labeled 
wrong.  It should have a label of removable_disk_device_t.
The problem is there is currently no good way of determining what cdrom 
disk is from a fixed disk, from a policy point of
view.  We are investigating ideas around using kudzu to relabel the devices.

If you do a chcon -t removable_disk_device_t /dev/hdc
does the problem go away?

Dan

>This is not audited in enforcing mode.. but does not work either
>(program exits with "please chmod 666 /dev/cdrom as root").
>/dev/cdrom is symlinked directly to /dev/hdc.
>
>4.0K lrwxrwxrwx  1 0 0 8 Mar 29 17:26 /dev/cdrom -> /dev/hdc
>4.0K brw-rw-rw-  1 0 6 22, 0 Feb 23 13:02 /dev/hdc
>
>Is this expected, or desired behavior?  Shouldn't a locally logged in
>user be allowed access to audio cds? (perhaps should be -or is- tunable)
>
>I'm working with policy-sources-1.11.2-13.
>  
>