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SubjectRe: Recovering .config from vmlinuz and System.map
On Tue, 18 Feb 2003 15:29:16 +0100
"Paul Rolland" <rol@as2917.net> wrote:

| I've a box running a linux 2.4.18-14 (RH stuff), for which I've lost
| the .config file...
|
| I've gone through a long .config recovery process by looking at the
| entries in System.map, changing the configuration, building the kernel,
| diffing the new System.map with the reference one, again and again.
|
| The diff process was done only on the symbol names and the last diff
| states :
| diff -urN System.map-9 System.map-2.4.18-sound | less
| --- System.map-9 Tue Feb 18 13:36:33 2003
| +++ System.map-2.4.18-sound Tue Feb 18 09:47:47 2003
| @@ -10776,6 +10776,7 @@
| d __setup_str_console_setup
| d __setup_str_reserve_setup
| d startup.0
| +d configs
| d zone_balance_ratio
| d zone_balance_min
| d zone_balance_max
|
| Could someone direct me to where is located this "configs" stuff
| that I can't find ?

I wrote an optional feature that stores kernel .config info inside
the 'vmlinux' file in an array named 'configs'. I don't know if
it's included in your kernel or not.

Some patches for this in-kernel-config feature are available at
http://www.osdl.org/archive/rddunlap/patches/ikconfig/
and it's in Alan Cox's 2.4.-recent patches.

--
~Randy
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