[Bug 218625] [PATCH] Evdev ioctls EVIOCGRAB and EVIOCREVOKE don't work together with cuse

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218625

--- Comment #4 from Vladimir Kondratyev <vladimir at kondratyev.su> ---
(In reply to Jan Kokemüller from comment #3)
> I don't know if this is cuse specific behavior,
> or if FreeBSD in general behaves like this.

IOWINT ioctl passes int value in internal buffer and provide pointer to that
buffer to handler exactly like IOW(NNN, ###, int)

Following is IOWINT->IO convertor from webcamd internals, AFAIR, it is working:

        /*
         * Copy in the _IOWINT parameter and pass it as arg pointer
         * similar to what Linux is doing:
         */
        if ((cmd & IOC_DIRMASK) == IOC_VOID && IOCPARM_LEN(cmd) == sizeof(int))
{
                if (copy_from_user(&iowint, arg, sizeof(iowint)) != 0) {
                        retval = -EFAULT;
                        goto done;
                }
                arg = (void *)(intptr_t)iowint;
        }

-- 
You are receiving this mail because:
You are the assignee for the bug.