Re: Calling module functions from the kernel proper

From: David Woodhouse (dwmw2@infradead.org)
Date: Tue Aug 08 2000 - 08:55:24 EST


baettig@scs.ch said:
> > What is the best way to go about calling a kernel module's function(s)
> > from within the kernel itself?

> Sorry, I did not get it.

> What should happen if the kernel wants to call a function of your
> module and the module is not loaded yet???

int do_myroutine()
{
        int (*myroutine_ptr)(void) = NULL;
        int ret;

        myroutine_ptr = get_module_symbol("", "myroutine");

        if (!myroutine_ptr) {
                request_module("mymodule");
                myroutine_ptr = get_module_symbol("", "myroutine");
        }

        if (!myroutine_ptr)
                return -EINVAL;

        ret = (*myroutine_ptr)();

        put_module_symbol(myroutine_ptr);

        return ret;
}

--
dwmw2

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