Hi Gerd,
On Mon, 2003-01-13 at 11:40, Gerd Knorr wrote:
> > > Another way would be to have some kind of O_EXCL flag, but at ioctl
> > > level. So nxtvepg could set that for the S_FREQUENCY ioctl and the
> > > driver would refuse the switch with -EBUSY if there is more than one
> > > file handle open at that time.
How is this in effect different from the O_EXCL solution?
> I think with open(O_EXCL) it would work if you close the device before
> attempting to switch the tv station, i.e. like this:
>
> open(/dev/vbi,0)
> [ read vbi data ]
> close(/dev/vbi)
>
> if (open(/dev/vbi,O_EXCL)) {
> [ switch station ]
> close(/dev/vbi)
> }
>
> open(/dev/vbi,0)
> [ read more vbi data ]
> close(/dev/vbi)
>
> Comments?
Urm... Would this also go for video (as part of the API), or only for
vbi? Basically, this is bloated, imho.
Ronald
--
Ronald Bultje <rbultje@xxxxxxxxxxxxxxxxxxx>
Linux Video/Multimedia developer
