From: Michael Buesch <mbuesch@freenet.de>
To: omkar lagu <omkarlagu@yahoo.com>
Subject: Re: Fwd: How to call a function in a module from the kernel code !!! (Linux kernel)
Date: Thu, 9 Feb 2006 20:32:11 +0100
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On Thursday 09 February 2006 20:25, you wrote:
>=20
>  hello sir,
> =20
>  PROBLEM::How to call a function in a module from the
>  kernel code ??
> =20
>  what we did ? ::=20
>  we wanted to call a function in our module ll from
>  shm.c file (which is in the kernel)
> =20
>  so we declared function pointer in shm.c
>  :: unsigned long long (*ptr1)(int)
> =20
>  we declared it as extern in shm.h
>  :: extern unsigned long long (*ptr1)(int)
> =20
>  then we declared also in our module  (ll)
>  :: extern unsigned long long (*ptr1)(int)
> =20
>  we initialized it to ptr1 =3D commun; in init module
>  of ll.c
>  where commun is we wanted to call from the kernel
>   =20
>  but it gave an error as undefined refernce to ptr1
>  when we inserted our module..
> =20
>  can you help on this thing or can you give us a
>  example=20
>  regarding how it is done ??

EXPORT_SYMBOL(ptr1);

=2D-=20
Greetings Michael.

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