Hello, Ive been trying to EXPORT a SYMBOL from a netfilter module (actually a hook) to the KERNEL. Various modules seem to export various symbols to the kernel (or so it seems), an example being x_tables which exports a whole lot of functions like xt_register_target and so on and all other netfilter modules which use these functions dont seem to have any problems. So why is it that when my netfilter module is exporting something to the kernel and im tryin to use it from within a core kernel file, the compiler flags a 'undefined reference to' error? I googled and came to the conclusion from the kernelnewbies mailing list that using kallsyms_lookup() seems to be the answer or is it? So, if I do intend to use kallsyms_lookup how do I use it? There aren't so many instances of it being used it seems. Ive seen it being used in dev/core.c like so: symname = kallsyms_lookup((unsigned long)sym, &symsize,&offset,&modname, namebuf); I am basically trying to call a function that MY module EXPORTs inside one of the core linux routines. This would also mean that my netfilter module must be compiled (and linked also maybe?..not so sound with link time stuff) before the address becomes visible so that kallsyms_lookup can find it. So do I really shd be using it and if so, how? Any input is appreciated. Regards, Aijaz Baig. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
