Praveen,
You can export a variable by using:
EXPORT_SYMBOL(variable_name);
or, EXPORT_SYMBOL_NOVERS(variable_name);
in the file where it is defined (or anywhere this variable is
accessible).
Besides, you need to use -DEXPORT_SYMTAB flag for the file where you use
EXPORT_SYMBOL macro. All this is inside kernel.
Then you can just declare the variable in your module code and use it.
It should be visible there.
cheers,
Deepankar.
On Tue, 2003-05-27 at 16:49, praveen praveen wrote:
>
> Ravi can you tell me how to load symbols or any links.how can i access the
> symbol table entries.
>
> thanks in advance.
>
> >From: Ravi <ravivsn@roc.co.in>
> >To: praveen praveen <prav_6@hotmail.com>
> >CC: kernelnewbies@nl.linux.org
> >Subject: Re: Fwd: Re: Fwd: Re: how to load module to kernel core?
> >Date: Tue, 27 May 2003 13:25:35 +0530
> >
> >I guess there is a problem in symbol table loading.
> >You need to load symbols to proceed
> >Ravi
> >
> >praveen praveen wrote:
> >>
> >> I am trying to call a function which is defined in my module from msg.c
> >>which is kernel core using
> >>
> >> a function pointer.
> >>
> >> so when i insmod ,it is giving the function pointer as unresolved
> >>symbol. see the code below
> >>
> >> you will understand.
> >>
> >>>From: Daniele Bellucci <bellucda@tiscali.it>
> >>>To: "praveen praveen" <prav_6@hotmail.com>
> >>>Subject: Re: Fwd: Re: how to load module to kernel core?
> >>>Date: Mon, 26 May 2003 21:03:09 +0200
> >>>
> >>>On Mon 26 May 2003 20:54, praveen praveen wrote:
> >>> > I used the kernel compiling options also.my problem is i have load
> >>>my
> >>> > module with the kernel
> >>> >
> >>> > core i.e link it with the msg.o file before calling insmod
> >>>command.
> >>> >
> >>>
> >>>Could you explain better what are you tring to do?
> >>>
> >>>If you're writing a kernel module, you don't need any linkage becuase
> >>>this operation is performed during module loading.
> >>>
> >>>
> >>>-------------------------------------------------------------------------------------------------------------------------------------------------------------
> >>>
> >>>PGP PKEY
> >>>http://pgp.mit.edu:11371/pks/lookup?search=belch76@libero.it&op=index
> >>>ICQ# 104896040
> >>>Netphone/Fax 178.605.7063
> >>>Homepage http://web.tiscali.it/bellucda
> >>>-------------------------------------------------------------------------------------------------------------------------------------------------------------
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> >>>
> >>>Daniele Bellucci
> >>>
> >>>
> >>>
> >>
> >>_________________________________________________________________
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