On Mon, Aug 8, 2011 at 11:21 AM, Abu Rasheda [off-list ref] wrote:

 - grep kallsyms_lookup from /proc/kallsyms (it is there on SL 5.5 and SL

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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.

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if your kernel is compiled with kprobe, you can use it to get address too.

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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);
  }

Thanks. This is what i needed. Worked like a charm.!
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