Re: [PATCH -mm 1/4] LSM: Introduce inode_getsecid and ipc_getsecidhooks

From: Ahmed S. Darwish
Date: Wed Feb 27 2008 - 11:48:41 EST


Hi Paul,

On Wed, Feb 27, 2008 at 11:04:57AM -0500, Paul Moore wrote:
> On Tuesday 26 February 2008 6:24:11 pm Ahmed S. Darwish wrote:
> > Introduce inode_getsecid(inode, secid) and ipc_getsecid(ipcp, secid)
> > LSM hooks.
> >
> > This hooks will be used instead of similar exported SELinux
> > interfaces.
> >
> > Signed-off-by: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Ahmed S. Darwish <darwish.07@xxxxxxxxx>
> > ---
> >
> > include/linux/security.h | 18 ++++++++++++++++++
> > security/dummy.c | 12 ++++++++++++
> > security/security.c | 12 ++++++++++++
> > 3 files changed, 42 insertions(+)
> >
...
> ...
>
> > +static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp,
> > u32 *secid)
> > +{ }
>
> Should these both do a "*secid = 0;"?
>

Yes, this will also lead to consistency in the interface espcially
after changing task_getsecid to do the same (in patch #3).

> > diff --git a/security/dummy.c b/security/dummy.c
> > index 6a0056b..c2f4c52 100644
> > --- a/security/dummy.c
> > +++ b/security/dummy.c
> > @@ -422,6 +422,11 @@ static int dummy_inode_listsecurity(struct inode
> > *inode, char *buffer, size_t bu return 0;
> > }
> >
> > +static void dummy_inode_getsecid(const struct inode *inode, u32
> > *secid)
> > +{
> > + return;
> > +}
>
> ...
>
> > +static void dummy_ipc_getsecid(struct kern_ipc_perm *ipcp, u32
> > *secid)
> > +{
> > + return;
> > +}
>
> Same question.
>

Both will be changed to *secid = 0 in the comming send. Thanks!

--

"Better to light a candle, than curse the darkness"

Ahmed S. Darwish
Homepage: http://darwish.07.googlepages.com
Blog: http://darwish-07.blogspot.com

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