Adding a linux ioctl translation

[Martin Laabs]

Hi,

I try to add some new ioctl in the linuxulator. These ioctls are for the
joystick driver I am currently writing.
I tried to modify the linux_ioctl.h and linux_ioctl.c in the kernel but up
to know I had no success.
I still get the dmesg output about unimplemented ioctls:

inux: pid 2830 (linux_jstest): ioctl fd=3, cmd=0x6a01 ('j',1) is not
implemented
linux(2830): ioctl(3, 80016a11, *)
linux: pid 2830 (linux_jstest): ioctl fd=3, cmd=0x6a11 ('j',17) is not
implemented
linux(2830): ioctl(3, 80016a12, *)
linux: pid 2830 (linux_jstest): ioctl fd=3, cmd=0x6a12 ('j',18) is not
implemented
linux(2830): ioctl(3, 80806a13, *)
linux: pid 2830 (linux_jstest): ioctl fd=3, cmd=0x6a13 ('j',19) is not
implemented

I did the following:

1. Add the original ioctls to the linux_ioctl.h

#define LINUX_JSIOCGVERSION     0x6a01 /*0x80046a01*/
#define LINUX_JSIOCGAXES                0x6a11 /*0x80016a11*/
#define LINUX_JSIOCGBUTTONS     0x6a12 /*0x80016a12*/
#define LINUX_JSIOCGNAME                0x6a13 /*0x80006a13*/

#define LINUX_JS_MIN 0x6a01
#define LINUX_JS_MAX 0x6a13

2. Modified the linux_ioctl.c by adding:
static linux_ioctl_function_t linux_ioctl_joystick;
[...]
static struct linux_ioctl_handler joystick_handler =
{linux_ioctl_joystick, LINUX_JS_MIN, LINUX_JS_MAX };
[...]
DATA_SET(linux_ioctl_handler_set, joystick_handler);

static int
linux_ioctl_joystick(struct thread *td, struct linux_ioctl_args *args)
{
        int error;

        error = 0;
	printf(ARGS(ioctl, "%d, %04lx, *"), args->fd, \
                    (unsigned long)args->cmd);
        switch (args->cmd) {
        case LINUX_JSIOCGVERSION:       args->cmd = JSIOCGVERSION; break;
        case LINUX_JSIOCGAXES:  	args->cmd = JSIOCGAXES; break;
        case LINUX_JSIOCGBUTTONS:       args->cmd = JSIOCGBUTTONS; break;
        case LINUX_JSIOCGNAME:  	args->cmd = JSIOCGNAME(0); break;
        default:                        return (ENOIOCTL);
        }
        error = sys_ioctl(td, (struct ioctl_args *)args);
        return (error);
}

3. Recompile linux.ko, restart the system


Unfortunately this did not what it should. I still get the message about
the unimplemented ioctl.

What did I miss?

Thank you,
 Martin Laabs