F7: SELinux feature or bug?

Jonathan Dieter jdieter at gmail.com
Sun Jul 8 13:07:08 UTC 2007

On Sun, 2007-07-08 at 14:51 +0200, Jeroen Lankheet wrote:
> Hi all,
> I think I've been stupid or framed or both. I wanted to samba share a 
> USB disk on a F7 system but got an SELinux message saying that the 
> directory could not be shared, and that there was a command to get it 
> right (=wrong?).
> So I typed in
> chcon -t samba_share_t -R /
> Yes, that's what was in the SElinux message thingie as suggestion. And 
> being a total SELinux nitwit I did what the almighty Linux system adviced.
> So it took a while before getting "operation not permitted" on /dev/....
> Then I cancelled the operation but the damage has apparently already 
> been made.
> I retyped the command with the proper directory to share and now the 
> share worked.
> But when I restarted the system all kinds of services were broken 
> including /dev/eth0.
> The kernel could not find the eth0 device. The X configuration was gone 
> and all kinds of errors were smashed into my face.
> So it looks like the SELinux (or me myself?) has scrambled my harddisk. 
> I cannot even login anymore. The system is completely dead.
> Some 'simple' questions:
> Why did this go wrong?
> What actually did go wrong?
> What to do next? Re-install? That would be a bummer.
> Thanks for the help.
> Regards,
> Jeroen.
It looks like you set the SELinux context for the *whole* hard drive,
rather than the directory that you wanted to share.  The easiest way to
get it working again would be to append "selinux=0" in GRUB when you
boot the computer.

You'll have to ask some of the SELinux experts here how to reset the
contexts to what they're supposed to be.

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