[Qemu-devel] Re: [PATCH v3 1/1] Shared memory uio_pci driver

[Avi Kivity]

On 03/28/2010 01:31 PM, Michael S. Tsirkin wrote:
> > Aren't ioctls a lot simpler?
> >
> > Multiplexing multiple functions on write()s is just ioctls done uglier.
> >      
> I don't have an opinion here.
>
> Writes do have an advantage that strace can show the buffer
> content without being patched.
>    

ioctls encode the buffer size into the ioctl number, so in theory strace 
doesn't need to be taught about an ioctl to show its buffer.

> Further, something along the lines proposed above means that
> we do not need to depend in a system header to get
> the functionality.
>    

Yes, point users at the code and let them figure out how to do stuff.

--
error compiling committee.c: too many arguments to function