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SubjectRe: [linux-pm] [RFC] PM_QOS api update to use handles 1/5
On Wed, Jan 06, 2010 at 08:18:31PM +0100, Pavel Machek wrote:
> Hi!
>
> > > Umm.. passing binary numbers like that... is not exactly good
> > > interface. Think endianness issues when writing to it from high-level
> > > language.
> >
> > yeah. At the moment I can't recall why I went binary for the ABI,
> > we can revisit this, but its been in the wild for a few years now :(
> >
> > I guess I can do some tricks to see if its a hex string representation
> > of a number and parse that as well as supporting the s32. i.e. accept
> > strings "0x0000000" ... "0xFFFFFFFF" and return -EINVAL for anything
> > else.
>
> Maybe you could use length for detection? If they are writing 4 bytes,
> it is s32, 10 bytes means ascii?

That is what I was thinking + making sure the chars in the string where
valid hex digits ;) It would be easy to do. Let me know if you think I
should attempt to roll that into the kernel ABI exposed by this thing.

--mgross




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