Re: [PATCH] qemu: always ask for -enable-fips

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On Fri, Dec 13, 2013 at 05:22:30PM +0100, Paolo Bonzini wrote:
> Il 13/12/2013 16:15, Daniel P. Berrange ha scritto:
> > QEMU already detects current FIPs enablement via the file
> > /proc/sys/crypto/fips_enabled, but only if you use --enable-fips.
> > This is really stupid given that all the crypto libraries that
> > QEMU uses unconditonally look at the proc file. So by having this
> > flag QEMU is in the insane situation where if FIPS is enabled then
> > part of QEMU will honour FIPS settings but other parts of QEMU will
> > not honour it until you pass --enable-fips. Insanity. So having
> > libvirt pass --enable-fips unconditionally fixes this insanity as
> > much as possible. Better yet if QEMU were to just remove the
> > pointless --enable-fips arg and just respect the fips_enabled
> > sysctl flag by default.
> 
> Could libvirt look at /proc/sys/crypto/fips_enabled itself, and pass
> -enable-fips unconditionally (always: this means rejecting QEMUs that do
> not support FIPS mode if you're in FIPS mode) if it is enabled?

QEMU already looks at the /proc file itself - the -enable-fips option
is just enabling that bit of checking code.

Daniel
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