Red Hat Bugzilla – Bug 176545
loadkeys requires root priviledge starting with kernel.org 2.6.14.4
Last modified: 2007-11-30 17:11:19 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8) Gecko/20051130 Firefox/1.5 Description of problem: After upgrading kernel to kernel.org 2.6.14.4 logging in as a regular user results in error messages about inability to set keyboard map, since it became a root priviledged operation as a result of patch included in 2.6.14.4: ======================================================================= commit 6ca4c553e663b1eebe5630e70fd7cb39c4b910e3 Author: Daniel Drake <dsd@gentoo.org> Date: Fri Dec 2 20:56:21 2005 +0000 [PATCH] setkeys needs root This patch combines commit 0b360adbdb54d5b98b78d57ba0916bc4b8871968 (make setkeys root-only) and commit e3f17f0f6e98f58edb13cb38810d93e6d4808e68 (only disallow setting by users) Because people can play games reprogramming keys and leaving traps for the next user of the console. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> ======================================================================= Version-Release number of selected component (if applicable): kbb-1.12-10 How reproducible: Always Steps to Reproduce: 1. upgrade (patch) kernel.org kernel 2.6.14 to 2.6.14.4, reboot 2. log in as a regular user 3. watch the error messages Actual Results: dhcp04 login: vleo Password: Last login: Sun Dec 25 00:35:54 from hydra.lml Keymap 0: Permission denied Keymap 1: Permission denied Keymap 2: Permission denied KDSKBENT: Operation not permitted loadkeys: could not deallocate keymap 3 [vleo@dhcp04 ~]$ Expected Results: dhcp04 login: vleo Password: Last login: Sun Dec 25 00:35:54 from hydra.lml [vleo@dhcp04 ~]$ Additional info: I'm also submitting this as a buggy patch complain to the patch contributors. It's easy to fix the problem in an ad hoc way, but needs some architectural thought to fix it properly. I think, since kernel maintainers decided to include the patch into 2.6.14.4, then they will be able to make recommendation as to how to fix this FC4 problem, or will retract the patch. I do not think it's a FC4 kernel issue. It's either kbd or kernel.org kernel issue. This is part of the strace for loadkeys illustrating the new behaviour, run as a regular user: [pid 2600] open("/dev/tty", O_RDWR) = 3 [pid 2600] ioctl(3, KDGKBTYPE, 0xbfcb9247) = 0 [pid 2600] ioctl(3, KDGKBMODE, 0xbfcb95f8) = 0 [pid 2600] ioctl(3, KDSKBENT, 0xbfcb92f4) = -1 EPERM (Operation not permitted)
file that is patched: linux-2.6.14.4/drivers/char/vt_ioctl.c
The FC4 update kbd-1.12-10.fc4.1 removes the loadkeys invocation on login, so these error messages should not appear any more. Please update to the updated kbd package and reopen this bug report if it fails to fix the problem.
Indeed, update of kbd to kbd-1.12-10.fc4.1 (done with 'yum update kbd') fixed the problem.