In the udev permissions file there's this: sr*:root:cdrom:660 scd*:root:cdrom:660 pcd*:root:cdrom:0660 cdrom*:root:cdrom:0660 dvd:root:cdrom:0660 rdvd:root:cdrom:0660 cdroms/*:root:cdrom:0660 When I load ide-cd (or if it's compiled in the kernel I'd assume) I get the devices /dev/hdc and /dev/hdd, which are symlinked to /dev/cdroms/cdrom0 and /dev/cdroms/cdrom1 accordingly. The last line of above would be the one that worked with this, that is if the actual nodes were /dev/cdroms/cdrom0 and /dev/cdroms/cdrom1 linked back to /dev/hdc and /dev/hdd, which they aren't. It's trying to change the permissions of the symlinks, not the actual devices, and thus the permissions are root:disk when they should be root:cdrom. ls -l output: brw-rw---- 1 root disk 22, 0 Jul 10 03:41 /dev/hdc brw-rw---- 1 root disk 22, 64 Jul 10 03:41 /dev/hdd lrwxrwxrwx 1 root root 6 Jul 10 03:46 /dev/cdroms/cdrom0 -> ../hdc lrwxrwxrwx 1 root root 6 Jul 10 03:46 /dev/cdroms/cdrom1 -> ../hdd and here's my cdroms using ide-scsi instead of ide-cd, being properly permissioned, just for the heck of it: brw-rw---- 1 root cdrom 11, 0 Jul 10 03:41 sr0 brw-rw---- 1 root cdrom 11, 1 Jul 10 03:41 sr1 I'm not really sure how to go about fixing this, as putting the actual nodes in /dev/cdroms and linking back seems ugly, and the ide-devfs.sh script can't do that in it's current form anyway from what I see. And then of course there's the fact that the only thing that even puts it's cdroms into the cdroms folder is the ide cd driver which seems silly. At the same time it doesn't seem there's anyway for udev to see if /dev/hdc is a cdrom or a disk, or what not, sysfs has no reporting of this from what I can tell, though the way the ide-devfs.sh script checks would work, if a similar script for permissions were made. I'm using udev-030 and mm-sources-2.6.7-r7.
I don't see a "generic" way to fix this, sorry. I suggest you change the hdd and hdc permissions to be :cdrom. Create a 10-permissions file in /etc/udev/permissions.d/ with this in it.
