Help needed reading vmunix symbols

[Aled Morris]

I have a short program which uses (successfully) nlist(3) to read the
address of a kernel variable from /vmunix (the variable in question is
_ipforwarding, but that's beside the point).  Taking the value found in
the field "n_value" of the nlist structure, I can seek into /dev/kmem and
read the current value of the kernel variable.  (are you still with me?)

My problem is that I want to read the value of the variable from /vmunix
itself (i.e. "What is the value given to this variable at boot time?").
How do I convert from the n_value number into a seek offset into /vmunix?

Thanks in advance,

Aled Morris
systems programmer

    mail: awm at doc.ic.ac.uk    |    Department of Computing
    uucp: ..!ukc!icdoc!awm    |    Imperial College
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