On Sun, 21 Aug 2005, Chris Wedgwood wrote:
> On Sun, Aug 21, 2005 at 09:56:45PM +0200, Bodo Eggert wrote:
> > The parameter value should IMHO be a pointer to a struct {
> > unsigned long long maxspeed; // (with 0 being the magic max. value?)
> > int facility; /* 0=general speed, 2=general read, 4=read data,
> > 6=read audio, 8=read raw ... whatever is supported
> > n+1 = s/read/write/ */
> > }
>
> Passing pointers inside ioctl's is horrible IMO and if we can avoid it
> we should. It's just asking for problems.
It's used in all ioctls not requiring a read-only int or a void. See man
ioctl_list (2).
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