Help needed reading vmunix symbols

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Article #10454

#10454

From: Aled Morris
Date: Sat, 21 Jan 1989 01:48

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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@doc.ic.ac.uk    |    Department of Computing
    uucp: ..!ukc!icdoc!awm    |    Imperial College
    talk: 01-589-5111x5085    |    180 Queens Gate, London  SW7 2BZ

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!ucbvax!decwrl!labrea!rutgers!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: mcvax!gould.doc.imperial.ac.uk!awm@uunet.uu.net (Aled Morris)
Newsgroups: comp.sys.sun
Subject: Help needed reading vmunix symbols
Message-ID: <AWM.89Jan16215150@gould.doc.ic.ac.uk>
Date: 21 Jan 89 01:48:41 GMT
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Organization: Dept. of Computing, Imperial College, London
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Original-Date: 16 Jan 89 21:51:50 GMT
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