Re: [PATCH 01/10] procfs: add smack subdir to attrs

[Ahmed S. Darwish]

On Tue, Sep 11, 2018 at 09:41:32AM -0700, Casey Schaufler wrote:
> Back in 2007 I made what turned out to be a rather serious
> mistake in the implementation of the Smack security module.
> The SELinux module used an interface in /proc to manipulate
> the security context on processes. Rather than use a similar
> interface, I used the same interface. The AppArmor team did
> likewise. Now /proc/.../attr/current will tell you the
> security "context" of the process, but it will be different
> depending on the security module you're using.
>
> This patch provides a subdirectory in /proc/.../attr for
> Smack. Smack user space can use the "current" file in
> this subdirectory and never have to worry about getting
> SELinux attributes by mistake. Programs that use the
> old interface will continue to work (or fail, as the case
> may be) as before.
>

Did downstream distributions already merge the stacking patches on
their own?

Got a little-bit confused after reading the log above; I already see
this in in Ubuntu 18.04.1 LTS, v4.15.0-33-generic:

    $ tree /proc/self/attr/
    /proc/self/attr/
    âââ apparmor
    â âââ current
    â âââ exec
    â âââ prev
    âââ current
    âââ display_lsm
    âââ exec
    âââ fscreate
    âââ keycreate
    âââ prev
    âââ selinux
    â âââ current
    â âââ exec
    â âââ fscreate
    â âââ keycreate
    â âââ prev
    â âââ sockcreate
    âââ smack
    â âââ current
    âââ sockcreate

Thanks,

--
Darwi
http://darwish.chasingpointers.com