Re: [PATCH 0/2] selinux: add targeted whitelisting of ioctl commands.

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Thanks Paul. I wasn't anticipating much feedback until the userspace
changes were submitted. Just got those in on Wednesday. Let me know if
there is anything else I can provide.

On Thu, Apr 23, 2015 at 3:28 PM, Paul Moore <paul@xxxxxxxxxxxxxx> wrote:
> On Thu, Apr 9, 2015 at 5:48 PM, Jeff Vander Stoep <jeffv@xxxxxxxxxx> wrote:
>> ---- motivation ----
>> Ioctls provide many of the operations necessary for device control. The typical
>> driver supports a device specific set of operations accessible by the ioctl
>> system call and specified by the command argument. SELinux provides per
>> operation access control to many system operations e.g. chown, kill, setuid,
>> ipc_lock, etc. Ioclts on the other hand are granted on a per file descriptor
>> basis using the ioctl permission, meaning that the set of operations provided
>> by the driver are granted on an all-or-nothing basis. In some cases this may be
>> acceptable, but often the same driver provides a large and diverse set of
>> operations such as benign and necessary functionality as well as dangerous
>> capabilities, or access to system information that should be restricted.
>
> I haven't had a chance to review your patches yet, but thank you for
> posting them and responding to the early feedback.  It may take me a
> few weeks to review these patches, but they are in my review queue.
>
> -Paul
>
> --
> paul moore
> www.paul-moore.com
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