WSL2-Linux-Kernel/scripts/config

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#!/bin/bash
# Manipulate options in a .config file from the command line
usage() {
cat >&2 <<EOL
Manipulate options in a .config file from the command line.
Usage:
config options command ...
commands:
--enable|-e option Enable option
--disable|-d option Disable option
--module|-m option Turn option into a module
--state|-s option Print state of option (n,y,m,undef)
--enable-after|-E beforeopt option
Enable option directly after other option
--disable-after|-D beforeopt option
Disable option directly after other option
--module-after|-M beforeopt option
Turn option into module directly after other option
commands can be repeated multiple times
options:
--file .config file to change (default .config)
config doesn't check the validity of the .config file. This is done at next
make time.
The options need to be already in the file before they can be changed,
but sometimes you can cheat with the --*-after options.
EOL
exit 1
}
checkarg() {
ARG="$1"
if [ "$ARG" = "" ] ; then
usage
fi
case "$ARG" in
CONFIG_*)
ARG="${ARG/CONFIG_/}"
;;
esac
ARG="`echo $ARG | tr a-z A-Z`"
}
replace() {
sed -i -e "$@" $FN
}
if [ "$1" = "--file" ]; then
FN="$2"
if [ "$FN" = "" ] ; then
usage
fi
shift
shift
else
FN=.config
fi
if [ "$1" = "" ] ; then
usage
fi
while [ "$1" != "" ] ; do
CMD="$1"
shift
case "$CMD" in
--enable|-e)
checkarg "$1"
replace "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
shift
;;
--disable|-d)
checkarg "$1"
replace "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
shift
;;
--module|-m)
checkarg "$1"
replace "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
-e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
shift
;;
--state|-s)
checkarg "$1"
if grep -q "# CONFIG_$ARG is not set" $FN ; then
echo n
else
V="$(grep "^CONFIG_$ARG=" $FN)"
if [ $? != 0 ] ; then
echo undef
else
V="${V/CONFIG_$ARG=/}"
V="${V/\"/}"
echo "$V"
fi
fi
shift
;;
--enable-after|-E)
checkarg "$1"
A=$ARG
checkarg "$2"
B=$ARG
replace "/CONFIG_$A=[my]/aCONFIG_$B=y" \
-e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=y" \
-e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
shift
shift
;;
--disable-after|-D)
checkarg "$1"
A=$ARG
checkarg "$2"
B=$ARG
replace "/CONFIG_$A=[my]/a# CONFIG_$B is not set" \
-e "/# CONFIG_$ARG is not set/a/# CONFIG_$ARG is not set" \
-e "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
shift
shift
;;
--module-after|-M)
checkarg "$1"
A=$ARG
checkarg "$2"
B=$ARG
replace "/CONFIG_$A=[my]/aCONFIG_$B=m" \
-e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=m" \
-e "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
-e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
shift
shift
;;
# undocumented because it ignores --file (fixme)
--refresh)
yes "" | make oldconfig
;;
*)
usage
;;
esac
done