Re: [PATCH] mtrr: s/suser/capable/

From: Tigran Aivazian (
Date: Thu Aug 31 2000 - 05:53:21 EST

On Thu, 31 Aug 2000, Matthew Kirkwood wrote:

> On Thu, 31 Aug 2000, Tigran Aivazian wrote:
> > Actually, microcode driver checks CAP_SYS_RAWIO only on open() so it
> > would allow access to the receiver of fd even he has no CAP_SYS_RAWIO
> > privilege. Hmmm, maybe I should put it back into write() method, as
> > Linus (or someone else) did at some point (and I removed it)...
> Surely that's correct. Observe that root can send me
> an fd to /etc/shadow or /dev/kmem if it so chooses.

ok, you are right - probably that is what I was thinking when I removed
the capability check in ->write() :)

as for CAP_SYS_RAWIO in mtrr - our emails must have crossed in the air - I
said exactly the same thing to Arnaldo...


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