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Re: [PATCH] limited support for non-root mlock()

From: Justus Winter
Subject: Re: [PATCH] limited support for non-root mlock()
Date: Thu, 09 Jul 2015 13:25:30 +0200
User-agent: alot/0.3.5

Quoting Samuel Thibault (2015-07-08 18:22:56)
> Justus Winter, le Wed 08 Jul 2015 16:22:28 +0200, a écrit :
> > Alternatively, you could re-purpose the existing RPC `vm_wire',
> > changing the type of its first argument from `host_priv_t' to `host_t'
> > (this is backwards compatible as the privileged host control port is
> > also a host port), and changing the behavior slightly depending on
> > whether the user passed the priv port or a normal host port.
> Ok, so it'd look like this?

Yes, I think that looks much nicer.

Nitpick: The documentation now says "[The function returns]
KERN_INVALID_HOST if host was not the privileged host port", maybe
just "... was not a valid host port".

> (I can't reuse the intran, since the obtained host_t is the same in
> non-priv and priv cases).

Ah, I didn't know that.  But your solution looks reasonable to me.


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