- grep kallsyms_lookup from /proc/kallsyms (it is there on SL 5.5 and SL
6.0. You can edit your program and assign something like:
int (*my_kallsyms_lookup_name)(const char *name) = (void *) KALLSYMS;
where KALLSYMS is address found above, or your loading script can feed this address.
This is what i am currently doing but i need a cleaner way of doing this.
Sometime, this is only thing you have, and this is pretty clean. You can write a script, which could pass module parameter for the address of the function.
if your kernel is compiled with kprobe, you can use it to get address too.
How do i do it using kprobes? To register a kprobe, i need the address of kallsyms_lookup_name which is what i want in the first place.
I think following should work. struct kprobe kp; memset(&kp, 0, sizeof(kp)); kp.symbol_name = "kallsyms_lookup_name"; if (!register_kprobe(&kp)) { my_kallsyms_lookup_name = (void *) kp.addr; unregister_kprobe(&kp); }