Red Hat Bugzilla – Full Text Bug Listing
|Summary:||warning: security context not preserved|
|Product:||[Fedora] Fedora||Reporter:||Ralf Corsepius <rc040203>|
|Component:||coreutils||Assignee:||Tim Waugh <twaugh>|
|Status:||CLOSED RAWHIDE||QA Contact:|
|Fixed In Version:||5.2.1-49||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2005-09-07 07:19:49 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Ralf Corsepius 2005-09-06 06:08:08 EDT
Description of problem: mv issues a "warning: security context not preserved ... Operation not supported" warning, when moving files from an nfs mounted directory to a local file system. Version-Release number of selected component (if applicable): coreutils-5.2.1-48.1 kernel-2.6.12-1.1447_FC4 selinux-policy-targeted-1.25.4-10 How reproducible: Always. Steps to Reproduce: Try to move a file from an nfs-mounted directory to a local directory. Actual results: mv /users/columbo/xyz . mv: warning: security context not preserved `/users/columbo/xyz': Operation not supported Expected results: Warning free function. Additional info: Both machines involved are running FC4 with all current updates and selinux-policy-targeted enabled.
Comment 1 Tim Waugh 2005-09-06 06:33:49 EDT
Please show the output of 'strace mv /users/columbo/xyz .'.
Comment 2 Ralf Corsepius 2005-09-06 07:42:01 EDT
Created attachment 118494 [details] strace mv /users/columbo/xyz /tmp/xyz 2> pr167613.strace In this case, /users/columbo is nfs-mounted on a remote machine, /tmp/xyz is local. On the remote machine: # ls -lZ xyz -rw-r--r-- columbo users user_u:object_r:user_home_t xyz On the local machine: # ls -lZ /users/columbo/xyz -rw-r--r-- columbo users /users/columbo/xyz After the move, on the local machine: # ls -lZ /tmp/xyz -rw-r--r-- columbo users user_u:object_r:tmp_t /tmp/xyz
Comment 3 Tim Waugh 2005-09-06 07:57:30 EDT
The warning is correct. NFS doesn't support that.
Comment 4 Ralf Corsepius 2005-09-06 08:06:40 EDT
(In reply to comment #3) > The warning is correct. NFS doesn't support that. Well, advertising SELinux as "server enhancement" and then not supporting NFS mounts disqualifies SELinux from being "ready for production server use", IMO.
Comment 5 Tim Waugh 2005-09-06 08:43:29 EDT
The warning is just saying that the file context on the NFS server (if there is one) cannot be copied onto the local file. This is not an SELinux limitation but an NFS limitation, as I understand it.
Comment 6 Ralf Corsepius 2005-09-06 12:03:03 EDT
(In reply to comment #5) > This is not an SELinux limitation but an NFS limitation, as I understand it. It actually doesn't matter who's to blame. The question is: Has this warning to be taken seriously and does this warning indicate any real functional problems? If not, this warning must be removed, because it interferes with user expectations. If yes, this means SELinux is not ready for production use, because it's design does not harmonize with NFS. As NFS is one of the most important feature of *nix systems, I feel justified in naming SELinux "Broken design".
Comment 7 Tim Waugh 2005-09-06 12:04:52 EDT
Dan, what do you think? Should we warn in this instance?
Comment 8 Daniel Walsh 2005-09-06 17:15:00 EDT
In rawhide we have this comment :^) So I guess we can say it is an SELinux/coreutils bug. revision 1.14 date: 2005/05/31 20:52:29; author: dwalsh; state: Exp; lines: +31 -33 * Tue May 31 2005 Dan Walsh <email@example.com> 5.2.1-49 - Eliminate bogus "can not preserve context" message when moving files. ----------------------------