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SubjectRe: [PATCH] NetLabel: Introduce a new kernel configuration API for NetLabel - For 2.6.24-rc-git11 - Smack Version 10

--- Casey Schaufler <casey@schaufler-ca.com> wrote:

>
> --- Joshua Brindle <method@manicmethod.com> wrote:
>
> > Joshua Brindle wrote:
> > > Casey Schaufler wrote:
> > >> From: Paul Moore <paul.moore@hp.com>
> > >>
> > >> Add a new set of configuration functions to the NetLabel/LSM API so that
> > >> LSMs can perform their own configuration of the NetLabel subsystem
> > >> without
> > >> relying on assistance from userspace.
> > >>
> > > I'm still not receiving the actual patch email on lsm (perhaps its too
> > > long and should be split up..) so I'll just respond on this email.
> > > Using the v10 patches on your website I'm still seeing strange
> > > behavior where echo foo > /proc/self/attr/current changes the label of
> > > every process on the system to foo (verified with both ps -AZ and cat
> > > /proc/1/attr/current).
> > >
> > Actually I'm getting more strange behavior:
> >
> > On terminal 1 I do:
> > echo foo > /proc/self/attr/current
> > then ps -AZ shows foo for every process
> > touch somefile; attr -S -g SMACK64 somefile says foo
> >
> > On terminal 2 I do:
> > ps -AZ and everything shows up as _
> > cat /proc/$pid of bash on term 1/attr/current is _
>
> Now this I can explain. Every task has it's own correct
> label. The problem is a missing smack_getprocattr() hook.
> ps is getting the value for "current" on the current process,
> not that of the named process. Interestingly, the Smack label
> of /proc/<xxx>/attr/current is correct.

That's what I get for responding too quickly. There is a
smack_getprocattr() hook, it's just wrong. Fixed for the
next version.

Thank you again.


Casey Schaufler
casey@schaufler-ca.com
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