[cpia] A couple of CPiA patches

[Nick Holloway]

f.duncan.m.haldane@worldnet.att.net (Duncan Haldane) writes:
> The  /proc/cpia/video0 belongs to me when I run gqcam to view the QX3 and 
> reverts to root when I close it.   I dont know how this "magic"
> occurs. (This is RedHat 7.3)  But I think it is (usually) standard

The magic is in "cpia.c".

    cpia_open():
        /* Set ownership of /proc/cpia/videoX to current user */
        if(cam->proc_entry)
                cam->proc_entry->uid = current->uid;

    cpia_close():
	/* Return ownership of /proc/cpia/videoX to root */
	if(cam->proc_entry)
		cam->proc_entry->uid = 0;

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