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kconfig: have extract-ikconfig read ELF files 

It would be nice to use extract-ikconfig to find the congfig.gz
in either vmlinux (not vmlinuz) or configs.ko.

This patch changes the script to also be able to read ELF files directly.

[ Impact: find config.gz in vmlinux and configs.ko ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2009-04-30 12:22:20 -04:00 committed by Steven Rostedt
parent fd3132d581
commit 6be51ffc17
1 changed files with 10 additions and 0 deletions
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10
scripts/extract-ikconfig
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@ -59,6 +59,8 @@ dump_config "$image"
GZHDR1="0x1f 0x8b 0x08 0x00"
GZHDR2="0x1f 0x8b 0x08 0x08"
ELFHDR="0x7f 0x45 0x4c 0x46"
# vmlinux.gz: Check for a compressed images
off=`$binoffset "$image" $GZHDR1 2>/dev/null`
[ "$?" != "0" ] && off="-1"
@ -73,6 +75,14 @@ elif [ "$off" -ne "-1" ]; then
(dd ibs="$off" skip=1 count=0 && dd bs=512k) <"$image" 2>/dev/null | \
zcat >"$TMPFILE"
dump_config "$TMPFILE"
# check if this is simply an ELF file
else
off=`$binoffset "$image" $ELFHDR 2>/dev/null`
[ "$?" != "0" ] && off="-1"
if [ "$off" -eq "0" ]; then
dump_config "$image"
fi
fi
echo "ERROR: Unable to extract kernel configuration information."