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Kernel configuration in kernel, kernel 2.4.20

PATCH In review Paul Rolland 2 participants 3 messages Dec 29, 2002 – Dec 30, 2002 Char and misc drivers

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Paul Rolland

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PATCH 1/1 Kernel configuration in kernel, kernel 2.4.20

Hello,

Tired of keeping copy of the kernel .config file, I decided to create a kernel patch to have a
/proc/config/config.gz
entry that would be created at boot time and that would
allow a :
zcat /proc/config/config.gz
to recover the .config file used to create the kernel.

Juste below is a patch, created against a 2.4.19, but that can also be applied to a 2.4.20 (with a few warning).
Result is :
1 [17:53] rol@donald:~> ls -l /proc/config/
total 0

-r--r--r--    1 root     root            0 Dec 29 18:00 config.gz
-r--r--r--    1 root     root            0 Dec 29 18:00 version

Feedback welcome,
Regards,
Paul Rolland, [email protected]

drivers/char/Config.in Thu Dec 19 13:47:19 2002 renamed from drivers/char/Config.in Thu Dec 19 13:48:19 2002 +1 -0
diff -urN linux-2.4.19/drivers/char/Config.in linux/drivers/char/Config.in
@@ -4,6 +4,7 @@
 mainmenu_option next_comment
 comment 'Character devices'
 
+bool 'Linux Kernel Configuration Driver' CONFIG_CONFIG
 bool 'Virtual terminal' CONFIG_VT
 if [ "$CONFIG_VT" = "y" ]; then
    bool '  Support for console on virtual terminal' CONFIG_VT_CONSOLE
drivers/char/Makefile Thu Dec 19 15:17:31 2002 renamed from drivers/char/Makefile Thu Dec 19 13:48:32 2002 +12 -0
diff -urN linux-2.4.19/drivers/char/Makefile linux/drivers/char/Makefile
@@ -136,6 +136,7 @@
   KEYBD = dummy_keyb.o
 endif
 
+obj-$(CONFIG_CONFIG) += config.o
 obj-$(CONFIG_VT) += vt.o vc_screen.o consolemap.o consolemap_deftbl.o $(CONSOLE) selection.o
 obj-$(CONFIG_SERIAL) += $(SERIAL)
 obj-$(CONFIG_SERIAL_HCDP) += hcdp_serial.o

@@ -287,3 +288,14 @@
 
 qtronixmap.c: qtronixmap.map
        set -e ; loadkeys --mktable $< | sed -e 's/^static *//' > $@
+
+config.o: config.h
+
+config.h: config.txt.gz
+       @cc -o dotHmaker dotHmaker.c
+       @./dotHmaker
+
+config.txt.gz::
+       @cp ../../.config config.txt
+       @gzip -f config.txt
+
drivers/char/config.c Thu Dec 19 13:47:24 2002 renamed from drivers/char/config.c Thu Jan 1 00:00:00 1970 +156 -0

156 lines not on this page · raw message

drivers/char/dotHmaker.c Thu Dec 19 13:47:24 2002 renamed from drivers/char/dotHmaker.c Thu Jan 1 00:00:00 1970 +57 -0

57 lines not on this page · raw message

#1 lore raw
Quoted 5 lines · On 2002.12.29 Paul Rolland wrote:

Hello,

Tired of keeping copy of the kernel .config file, I decided to create a kernel patch to have a
/proc/config/config.gz

Why people does not read the archives before doing anything ?

http://www.it.uc3m.es/~ptb/proconfig/

Signature · 4 lines
J.A. Magallon <[email protected]>      \                 Software is like sex:
werewolf.able.es                         \           It's better when it's free
Mandrake Linux release 9.1 (Cooker) for i586
Linux 2.4.21-pre2-jam2 (gcc 3.2.1 (Mandrake Linux 9.1 3.2.1-2mdk))
author
#2 lore raw

Hello,

Quoted 6 lines
Quoted 1 line

Tired of keeping copy of the kernel .config file, I decided

to create

Quoted 1 line

a kernel patch to have a /proc/config/config.gz

Why people does not read the archives before doing anything ?

Maybe because they consider that there is not only one way to do things... ;-)

OK, you don't like mine, no problem. I'm just expecting this functionnality in the kernel, not MY solution.

On a technical basis, I prefer to have a solution that is using full compression from gzip rather than relying on a set of keyword that will need to be updated with kernel dev and growth.

But, I'm second...

Regards,
Paul