Re: [TOMOYO #9 (2.6.27-rc7-mm1) 1/6] LSM adapter functions.

Serge E. Hallyn
2008-10-03T13:09:51Z

Quoting Kentaro Takeda (takedakn@nttdata.co.jp):
> Serge E. Hallyn wrote:
> > Just keep your own hash table.
> I see, then we want one more LSM hook for clearing the hash table
> after returing from vfs_*().
>
> foo() {
> error = security_path_foo(); /* save result in the hash table */
> error = vfs_foo(); /* fetch from the hash table in security_inode_*() */
> security_path_clear(); /* clear the hash table */
> }
>
> Is it acceptable?

Why can't you just clear the value during security_inode_foo()?

Note I'm seeing this as a way for Tomoyo to temporarily (maybe) work
around the mis-placement of the security_path_foo() hooks. I don't want
to add security_path_clear() hooks to "legitimize" the workaround. I'd
rather Tomoyo and Apparmor folks keep looking for a better way to get
real DAC-before-MAC.

> Regards,
>
>
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