Red Hat Bugzilla – Bug 130095
missing entries in console.perms
Last modified: 2013-03-05 22:41:24 EST
Description of problem: With the current udev naming convention (udev-030-3), there are missing entries in /etc/security/console.terms such that e.g. USB based optical drivers aren't matched. This means that the console user can't eject them from the commandline or gnome-vfs/nautilus. Version-Release number of selected component (if applicable): pam-0.77-54 How reproducible: Always Additional info: Specifically, the entries '/dev/sr* /dev/scd* /dev/pcd*' should be added to the <cdrom> class; see /etc/udev/permissions.d/50-udev.permissions for an overview of kernel 2.6 device files. See also bug #130094 on udev.
sr0 shouldn't be created.
Moreover, thinking about it, cdrom* links should be created by the udev config.
Symlinks will solve this issue, but won't you need at lot of, perhaps complex, rules in udev? Case in point, I've discovered that this issue also applies to my DVD-ROM drive of my LS120/DVD-ROM combo at /dev/hdd. It works for the LS120 drive but only because of a stale symlink /dev/cdrom->/dev/hdc (left by kudzu I presume when I had my floppy/CD-RW combo in). To me it seems that the only thing in sysfs you can check on is the /block/hd[cd]/removable file. Unless you want to do a callout and look at /proc/ide/.. stuff like hal does. Is this sufficient, e.g. how do you determine whether it's floppy or optical drive to use the correct name for the symlink? Heuristics? To me it seems that it's necessary to look at /proc/ide/hd[cd]/media, that's what hal does anyway, and that gives you floppy,disk,cdrom,tape,UNKNOWN according to the kernel source. On a somewhat related issue, will we shift to a minimal tmpfs or ramfs /dev for FC3? Having the 'right rules' to give names expected by the (static) console.perms file is a prerequisite for this it seems as kudzu won't run on every boot and create symlinks.
So how we decided? To create symlinks or to modify the console.perms file? If the former answer is right then this bug should be reassigned to udev.
udev now creates the cdrom and floppy compatibility symlinks so I am closing this bug.