> > This seems to be an interesting approach. > > > > > Interesting but impossible to do for ioctl calls. > When the application does a ioctl(fd_of_mnt_video0,VIDIOC_G_FMT,&arg) > for example, there is no way for the userspace helper to catch this ioctl. > The application could only open/read from the userspace helper's file > /mnt/video0. > ioctl would still have to be done on the kernel device driver. > I thought also about a /proc interface for decompression algorithms (a > helper would listen on a /proc file and write on another /proc file) but > /proc is not designed for that kind of thing. > A separate library seems to be the simplest solution.
There are some ways for this to work. For example, you may create a helper device for the daemon driver to bind, even requiring it to have root permission. -- Cheers, Mauro - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
