Red Hat Bugzilla – Bug 454261
who does not determine user's message status correctly
Last modified: 2010-05-17 15:07:44 EDT
Description of problem:
who does not take group owner of tty into account when determining users'
Version-Release number of selected component (if applicable):
[root@fc8d ~]# ls -l /dev/pts*
crw--w---- 1 root root 136, 0 Jul 7 12:37 0
crw--w---- 1 user_a tty 136, 1 Jul 7 12:37 1
crw--w---- 1 root tty 136, 2 Jul 7 12:42 2
[root@fc8d ~]# who -wu
user_a + pts/0 Jul 7 11:43 00:05 27269 (hostname.domain)
user_a + pts/1 Jul 7 12:31 00:05 15316 (hostname.domain)
root + pts/2 Jul 7 12:32 . 15345 (hostname.domain)
Actually, user "user_a" on tty /dev/pts/0 has "mesg n" (because of tty group: root).
Bug does occur when logged through gdm.
"who" should check getgrnam("tty") gr_gid against stat("/dev/...") s_gid or
should be setgid tty and check term gid against getegid().
Created attachment 311137 [details]
Additional check of terminal's group
Thanks for report and patch, as the behaviour is still upstream adding upstream
maintainer to cc.
Thanks. I've raised a portability-related question on the bug-coreutils mailing
coreutils-6.9-18.fc8 has been submitted as an update for Fedora 8
Oops, that's by accident, fix is not included in that update as there is still upstream about portability impact.
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This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
More information and reason for this action is here:
Piotr, thanks for the patch! I've added the configure option requested by upstream. The updated patch is now pending review at upsatream mailing-list:
patch got upstream with some additional improvements:
Built as coreutils-8.4-2.fc13, closing RAWHIDE.
coreutils-7.6-11.fc12 has been submitted as an update for Fedora 12.
coreutils-7.2-8.fc11 has been submitted as an update for Fedora 11.
coreutils-7.2-8.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
coreutils-7.6-11.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.