xref: /linux/scripts/config (revision f8bade6c9a6213c2c5ba6e5bf32415ecab6e41e5)
1c25ce589SFinn Behrens#!/usr/bin/env bash
2b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0
38e54701eSAndi Kleen# Manipulate options in a .config file from the command line
48e54701eSAndi Kleen
573877785SClement Chauplannazmyname=${0##*/}
673877785SClement Chauplannaz
7f5ef2f7bSYann E. MORIN# If no prefix forced, use the default CONFIG_
8f5ef2f7bSYann E. MORINCONFIG_="${CONFIG_-CONFIG_}"
9f5ef2f7bSYann E. MORIN
10e461bc9fSJeremie Francois (on alpha)# We use an uncommon delimiter for sed substitutions
11e461bc9fSJeremie Francois (on alpha)SED_DELIM=$(echo -en "\001")
12e461bc9fSJeremie Francois (on alpha)
138e54701eSAndi Kleenusage() {
148e54701eSAndi Kleen	cat >&2 <<EOL
158e54701eSAndi KleenManipulate options in a .config file from the command line.
168e54701eSAndi KleenUsage:
1773877785SClement Chauplannaz$myname options command ...
188e54701eSAndi Kleencommands:
198e54701eSAndi Kleen	--enable|-e option   Enable option
208e54701eSAndi Kleen	--disable|-d option  Disable option
218e54701eSAndi Kleen	--module|-m option   Turn option into a module
22f0a6332cSJonas Aaberg	--set-str option string
23f0a6332cSJonas Aaberg	                     Set option to "string"
24f0a6332cSJonas Aaberg	--set-val option value
25f0a6332cSJonas Aaberg	                     Set option to value
26d5bfb6b3SYann E. MORIN	--undefine|-u option Undefine option
278e54701eSAndi Kleen	--state|-s option    Print state of option (n,y,m,undef)
288e54701eSAndi Kleen
298e54701eSAndi Kleen	--enable-after|-E beforeopt option
308e54701eSAndi Kleen                             Enable option directly after other option
318e54701eSAndi Kleen	--disable-after|-D beforeopt option
328e54701eSAndi Kleen                             Disable option directly after other option
338e54701eSAndi Kleen	--module-after|-M beforeopt option
348e54701eSAndi Kleen                             Turn option into module directly after other option
358e54701eSAndi Kleen
368e54701eSAndi Kleen	commands can be repeated multiple times
378e54701eSAndi Kleen
388e54701eSAndi Kleenoptions:
394edc7e32SYann E. MORIN	--file config-file   .config file to change (default .config)
404edc7e32SYann E. MORIN	--keep-case|-k       Keep next symbols' case (dont' upper-case it)
418e54701eSAndi Kleen
4273877785SClement Chauplannaz$myname doesn't check the validity of the .config file. This is done at next
438e54701eSAndi Kleenmake time.
444edc7e32SYann E. MORIN
4573877785SClement ChauplannazBy default, $myname will upper-case the given symbol. Use --keep-case to keep
464edc7e32SYann E. MORINthe case of all following symbols unchanged.
47f5ef2f7bSYann E. MORIN
4873877785SClement Chauplannaz$myname uses 'CONFIG_' as the default symbol prefix. Set the environment
4973877785SClement Chauplannazvariable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" $myname ...
508e54701eSAndi KleenEOL
518e54701eSAndi Kleen	exit 1
528e54701eSAndi Kleen}
538e54701eSAndi Kleen
548e54701eSAndi Kleencheckarg() {
558e54701eSAndi Kleen	ARG="$1"
568e54701eSAndi Kleen	if [ "$ARG" = "" ] ; then
578e54701eSAndi Kleen		usage
588e54701eSAndi Kleen	fi
598e54701eSAndi Kleen	case "$ARG" in
60f5ef2f7bSYann E. MORIN	${CONFIG_}*)
61f5ef2f7bSYann E. MORIN		ARG="${ARG/${CONFIG_}/}"
628e54701eSAndi Kleen		;;
638e54701eSAndi Kleen	esac
644edc7e32SYann E. MORIN	if [ "$MUNGE_CASE" = "yes" ] ; then
658e54701eSAndi Kleen		ARG="`echo $ARG | tr a-z A-Z`"
664edc7e32SYann E. MORIN	fi
678e54701eSAndi Kleen}
688e54701eSAndi Kleen
6983e8b90eSClement Chauplannaztxt_append() {
7083e8b90eSClement Chauplannaz	local anchor="$1"
7183e8b90eSClement Chauplannaz	local insert="$2"
7283e8b90eSClement Chauplannaz	local infile="$3"
7383e8b90eSClement Chauplannaz	local tmpfile="$infile.swp"
7483e8b90eSClement Chauplannaz
7583e8b90eSClement Chauplannaz	# sed append cmd: 'a\' + newline + text + newline
7683e8b90eSClement Chauplannaz	cmd="$(printf "a\\%b$insert" "\n")"
7783e8b90eSClement Chauplannaz
7883e8b90eSClement Chauplannaz	sed -e "/$anchor/$cmd" "$infile" >"$tmpfile"
7983e8b90eSClement Chauplannaz	# replace original file with the edited one
8083e8b90eSClement Chauplannaz	mv "$tmpfile" "$infile"
8183e8b90eSClement Chauplannaz}
8283e8b90eSClement Chauplannaz
8383e8b90eSClement Chauplannaztxt_subst() {
8483e8b90eSClement Chauplannaz	local before="$1"
8583e8b90eSClement Chauplannaz	local after="$2"
8683e8b90eSClement Chauplannaz	local infile="$3"
8783e8b90eSClement Chauplannaz	local tmpfile="$infile.swp"
8883e8b90eSClement Chauplannaz
89e461bc9fSJeremie Francois (on alpha)	sed -e "s$SED_DELIM$before$SED_DELIM$after$SED_DELIM" "$infile" >"$tmpfile"
9083e8b90eSClement Chauplannaz	# replace original file with the edited one
9183e8b90eSClement Chauplannaz	mv "$tmpfile" "$infile"
9283e8b90eSClement Chauplannaz}
9383e8b90eSClement Chauplannaz
9483e8b90eSClement Chauplannaztxt_delete() {
9583e8b90eSClement Chauplannaz	local text="$1"
9683e8b90eSClement Chauplannaz	local infile="$2"
9783e8b90eSClement Chauplannaz	local tmpfile="$infile.swp"
9883e8b90eSClement Chauplannaz
9983e8b90eSClement Chauplannaz	sed -e "/$text/d" "$infile" >"$tmpfile"
10083e8b90eSClement Chauplannaz	# replace original file with the edited one
10183e8b90eSClement Chauplannaz	mv "$tmpfile" "$infile"
10283e8b90eSClement Chauplannaz}
10383e8b90eSClement Chauplannaz
10456643222SMichal Marekset_var() {
10556643222SMichal Marek	local name=$1 new=$2 before=$3
10656643222SMichal Marek
10756643222SMichal Marek	name_re="^($name=|# $name is not set)"
10856643222SMichal Marek	before_re="^($before=|# $before is not set)"
10956643222SMichal Marek	if test -n "$before" && grep -Eq "$before_re" "$FN"; then
11083e8b90eSClement Chauplannaz		txt_append "^$before=" "$new" "$FN"
11183e8b90eSClement Chauplannaz		txt_append "^# $before is not set" "$new" "$FN"
11256643222SMichal Marek	elif grep -Eq "$name_re" "$FN"; then
11383e8b90eSClement Chauplannaz		txt_subst "^$name=.*" "$new" "$FN"
11483e8b90eSClement Chauplannaz		txt_subst "^# $name is not set" "$new" "$FN"
11556643222SMichal Marek	else
11656643222SMichal Marek		echo "$new" >>"$FN"
11756643222SMichal Marek	fi
1188e54701eSAndi Kleen}
1198e54701eSAndi Kleen
120d5bfb6b3SYann E. MORINundef_var() {
121d5bfb6b3SYann E. MORIN	local name=$1
122d5bfb6b3SYann E. MORIN
12383e8b90eSClement Chauplannaz	txt_delete "^$name=" "$FN"
12483e8b90eSClement Chauplannaz	txt_delete "^# $name is not set" "$FN"
125d5bfb6b3SYann E. MORIN}
126d5bfb6b3SYann E. MORIN
1278e54701eSAndi Kleenif [ "$1" = "--file" ]; then
1288e54701eSAndi Kleen	FN="$2"
1298e54701eSAndi Kleen	if [ "$FN" = "" ] ; then
1308e54701eSAndi Kleen		usage
1318e54701eSAndi Kleen	fi
13247312d2cSMichal Marek	shift 2
1338e54701eSAndi Kleenelse
1348e54701eSAndi Kleen	FN=.config
1358e54701eSAndi Kleenfi
1368e54701eSAndi Kleen
1372302e873SAndi Kleenif [ "$1" = "" ] ; then
1382302e873SAndi Kleen	usage
1392302e873SAndi Kleenfi
1402302e873SAndi Kleen
1414edc7e32SYann E. MORINMUNGE_CASE=yes
1428e54701eSAndi Kleenwhile [ "$1" != "" ] ; do
1438e54701eSAndi Kleen	CMD="$1"
1448e54701eSAndi Kleen	shift
1458e54701eSAndi Kleen	case "$CMD" in
1464edc7e32SYann E. MORIN	--keep-case|-k)
1474edc7e32SYann E. MORIN		MUNGE_CASE=no
1484edc7e32SYann E. MORIN		continue
1494edc7e32SYann E. MORIN		;;
15047312d2cSMichal Marek	--refresh)
15147312d2cSMichal Marek		;;
15257a9c760SClement Chauplannaz	--*-after|-E|-D|-M)
1538e54701eSAndi Kleen		checkarg "$1"
15447312d2cSMichal Marek		A=$ARG
15547312d2cSMichal Marek		checkarg "$2"
15647312d2cSMichal Marek		B=$ARG
15747312d2cSMichal Marek		shift 2
15847312d2cSMichal Marek		;;
15945f53cc9SAndi Kleen	-*)
16047312d2cSMichal Marek		checkarg "$1"
1618e54701eSAndi Kleen		shift
1628e54701eSAndi Kleen		;;
16347312d2cSMichal Marek	esac
16447312d2cSMichal Marek	case "$CMD" in
16547312d2cSMichal Marek	--enable|-e)
166f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y"
16747312d2cSMichal Marek		;;
1688e54701eSAndi Kleen
1698e54701eSAndi Kleen	--disable|-d)
170f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set"
1718e54701eSAndi Kleen		;;
1728e54701eSAndi Kleen
1738e54701eSAndi Kleen	--module|-m)
174f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m"
1758e54701eSAndi Kleen		;;
1768e54701eSAndi Kleen
1771f990cf9SMichal Marek	--set-str)
178d6686da8SYann E. MORIN		# sed swallows one level of escaping, so we need double-escaping
179f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\""
1801f990cf9SMichal Marek		shift
1811f990cf9SMichal Marek		;;
1821f990cf9SMichal Marek
183f0a6332cSJonas Aaberg	--set-val)
184f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1"
185f0a6332cSJonas Aaberg		shift
186f0a6332cSJonas Aaberg		;;
187d5bfb6b3SYann E. MORIN	--undefine|-u)
188d5bfb6b3SYann E. MORIN		undef_var "${CONFIG_}$ARG"
189d5bfb6b3SYann E. MORIN		;;
190f0a6332cSJonas Aaberg
1918e54701eSAndi Kleen	--state|-s)
192f5ef2f7bSYann E. MORIN		if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then
1938e54701eSAndi Kleen			echo n
1948e54701eSAndi Kleen		else
195f5ef2f7bSYann E. MORIN			V="$(grep "^${CONFIG_}$ARG=" $FN)"
1968e54701eSAndi Kleen			if [ $? != 0 ] ; then
1978e54701eSAndi Kleen				echo undef
1988e54701eSAndi Kleen			else
199f5ef2f7bSYann E. MORIN				V="${V/#${CONFIG_}$ARG=/}"
200d6686da8SYann E. MORIN				V="${V/#\"/}"
201d6686da8SYann E. MORIN				V="${V/%\"/}"
2021925a276SYann E. MORIN				V="${V//\\\"/\"}"
203d6686da8SYann E. MORIN				echo "${V}"
2048e54701eSAndi Kleen			fi
2058e54701eSAndi Kleen		fi
2068e54701eSAndi Kleen		;;
2078e54701eSAndi Kleen
2088e54701eSAndi Kleen	--enable-after|-E)
209f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A"
2108e54701eSAndi Kleen		;;
2118e54701eSAndi Kleen
2128e54701eSAndi Kleen	--disable-after|-D)
213f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A"
2148e54701eSAndi Kleen		;;
2158e54701eSAndi Kleen
2168e54701eSAndi Kleen	--module-after|-M)
217f5ef2f7bSYann E. MORIN		set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A"
2188e54701eSAndi Kleen		;;
2198e54701eSAndi Kleen
2208e54701eSAndi Kleen	# undocumented because it ignores --file (fixme)
2218e54701eSAndi Kleen	--refresh)
2228e54701eSAndi Kleen		yes "" | make oldconfig
2238e54701eSAndi Kleen		;;
2248e54701eSAndi Kleen
2258e54701eSAndi Kleen	*)
226*d39648ebSRandy Dunlap		echo "bad command: $CMD" >&2
2278e54701eSAndi Kleen		usage
2288e54701eSAndi Kleen		;;
2298e54701eSAndi Kleen	esac
2308e54701eSAndi Kleendone
231