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SubjectRe: Bug/misfeature of "securityfs"
On Mon, 26 May 2008, Markku Savela wrote:

>
> I write a module which creates a securityfs on init
>
> foobar = securityfs_create_dir("foobar", NULL)
> and on exit it does
> security_fs_remove(foobar);
>
> When I do "insmod" and "rmmod", I see
>
> /sys/kernel/security/foobar/
>
> appear and go away.
>
> Now, if have a shell and do "cd /sys/kernel/security/foobar", the
> "rmmod" does not remove the directory. The directory disappears when I
> exit the shell from it via "cd ..". This is fine, and as it should be,
> but....
>
> IF, while having the shell in the directory, I try to "insmod" again,
> the insmod fails with "-1 File exists". Again, understandable, BUT
> when after this I exit the shell from the directory, IT DOES NOT GO
> AWAY. It's permanetly existing, and module install fails always with
> "File Exists".
>
> Is this a bug, or am doing something wrong?
>
> The kernel is Ubuntu Hardy heron
> 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008 i686

Sounds like a bug.


--
James Morris
<jmorris@namei.org>


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