Re: [PATCH v19 13/23] LSM: Specify which LSM to display

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On Fri, 24 Jul 2020, Casey Schaufler wrote:

> Create a new entry "display" in the procfs attr directory for
> controlling which LSM security information is displayed for a
> process. A process can only read or write its own display value.
> 
> The name of an active LSM that supplies hooks for
> human readable data may be written to "display" to set the
> value. The name of the LSM currently in use can be read from
> "display". At this point there can only be one LSM capable
> of display active. A helper function lsm_task_display() is
> provided to get the display slot for a task_struct.
> 
> Setting the "display" requires that all security modules using
> setprocattr hooks allow the action. Each security module is
> responsible for defining its policy.
> 
> AppArmor hook provided by John Johansen <john.johansen@xxxxxxxxxxxxx>
> SELinux hook provided by Stephen Smalley <sds@xxxxxxxxxxxxx>
> 
> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
> Acked-by: Stephen Smalley <sds@xxxxxxxxxxxxx>
> Acked-by: Paul Moore <paul@xxxxxxxxxxxxxx>
> Signed-off-by: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>

jj: do you have any review/feedback on this?

-- 
James Morris
<jmorris@xxxxxxxxx>




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