ublk_drv: add device parameter UBLK_PARAM_TYPE_DEVT
[linux-block.git] / scripts / config
CommitLineData
c25ce589 1#!/usr/bin/env bash
b2441318 2# SPDX-License-Identifier: GPL-2.0
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3# Manipulate options in a .config file from the command line
4
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5myname=${0##*/}
6
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7# If no prefix forced, use the default CONFIG_
8CONFIG_="${CONFIG_-CONFIG_}"
9
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10# We use an uncommon delimiter for sed substitutions
11SED_DELIM=$(echo -en "\001")
12
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13usage() {
14 cat >&2 <<EOL
15Manipulate options in a .config file from the command line.
16Usage:
73877785 17$myname options command ...
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18commands:
19 --enable|-e option Enable option
20 --disable|-d option Disable option
1f990cf9 21 --module|-m option Turn option into a module
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22 --set-str option string
23 Set option to "string"
24 --set-val option value
25 Set option to value
d5bfb6b3 26 --undefine|-u option Undefine option
1f990cf9 27 --state|-s option Print state of option (n,y,m,undef)
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28
29 --enable-after|-E beforeopt option
30 Enable option directly after other option
31 --disable-after|-D beforeopt option
32 Disable option directly after other option
33 --module-after|-M beforeopt option
34 Turn option into module directly after other option
35
36 commands can be repeated multiple times
37
38options:
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39 --file config-file .config file to change (default .config)
40 --keep-case|-k Keep next symbols' case (dont' upper-case it)
8e54701e 41
73877785 42$myname doesn't check the validity of the .config file. This is done at next
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43make time.
44
73877785 45By default, $myname will upper-case the given symbol. Use --keep-case to keep
4edc7e32 46the case of all following symbols unchanged.
f5ef2f7b 47
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48$myname uses 'CONFIG_' as the default symbol prefix. Set the environment
49variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" $myname ...
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50EOL
51 exit 1
52}
53
54checkarg() {
55 ARG="$1"
56 if [ "$ARG" = "" ] ; then
57 usage
58 fi
59 case "$ARG" in
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60 ${CONFIG_}*)
61 ARG="${ARG/${CONFIG_}/}"
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62 ;;
63 esac
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64 if [ "$MUNGE_CASE" = "yes" ] ; then
65 ARG="`echo $ARG | tr a-z A-Z`"
66 fi
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67}
68
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69txt_append() {
70 local anchor="$1"
71 local insert="$2"
72 local infile="$3"
73 local tmpfile="$infile.swp"
74
75 # sed append cmd: 'a\' + newline + text + newline
76 cmd="$(printf "a\\%b$insert" "\n")"
77
78 sed -e "/$anchor/$cmd" "$infile" >"$tmpfile"
79 # replace original file with the edited one
80 mv "$tmpfile" "$infile"
81}
82
83txt_subst() {
84 local before="$1"
85 local after="$2"
86 local infile="$3"
87 local tmpfile="$infile.swp"
88
e461bc9f 89 sed -e "s$SED_DELIM$before$SED_DELIM$after$SED_DELIM" "$infile" >"$tmpfile"
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90 # replace original file with the edited one
91 mv "$tmpfile" "$infile"
92}
93
94txt_delete() {
95 local text="$1"
96 local infile="$2"
97 local tmpfile="$infile.swp"
98
99 sed -e "/$text/d" "$infile" >"$tmpfile"
100 # replace original file with the edited one
101 mv "$tmpfile" "$infile"
102}
103
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104set_var() {
105 local name=$1 new=$2 before=$3
106
107 name_re="^($name=|# $name is not set)"
108 before_re="^($before=|# $before is not set)"
109 if test -n "$before" && grep -Eq "$before_re" "$FN"; then
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110 txt_append "^$before=" "$new" "$FN"
111 txt_append "^# $before is not set" "$new" "$FN"
56643222 112 elif grep -Eq "$name_re" "$FN"; then
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113 txt_subst "^$name=.*" "$new" "$FN"
114 txt_subst "^# $name is not set" "$new" "$FN"
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115 else
116 echo "$new" >>"$FN"
117 fi
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118}
119
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120undef_var() {
121 local name=$1
122
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123 txt_delete "^$name=" "$FN"
124 txt_delete "^# $name is not set" "$FN"
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125}
126
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127if [ "$1" = "--file" ]; then
128 FN="$2"
129 if [ "$FN" = "" ] ; then
130 usage
131 fi
47312d2c 132 shift 2
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133else
134 FN=.config
135fi
136
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137if [ "$1" = "" ] ; then
138 usage
139fi
140
4edc7e32 141MUNGE_CASE=yes
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142while [ "$1" != "" ] ; do
143 CMD="$1"
144 shift
145 case "$CMD" in
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146 --keep-case|-k)
147 MUNGE_CASE=no
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148 continue
149 ;;
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150 --refresh)
151 ;;
57a9c760 152 --*-after|-E|-D|-M)
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153 checkarg "$1"
154 A=$ARG
155 checkarg "$2"
156 B=$ARG
157 shift 2
158 ;;
45f53cc9 159 -*)
8e54701e 160 checkarg "$1"
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161 shift
162 ;;
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163 esac
164 case "$CMD" in
165 --enable|-e)
f5ef2f7b 166 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y"
47312d2c 167 ;;
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168
169 --disable|-d)
f5ef2f7b 170 set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set"
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171 ;;
172
173 --module|-m)
f5ef2f7b 174 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m"
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175 ;;
176
1f990cf9 177 --set-str)
d6686da8 178 # sed swallows one level of escaping, so we need double-escaping
f5ef2f7b 179 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\""
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180 shift
181 ;;
182
f0a6332c 183 --set-val)
f5ef2f7b 184 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1"
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185 shift
186 ;;
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187 --undefine|-u)
188 undef_var "${CONFIG_}$ARG"
189 ;;
f0a6332c 190
8e54701e 191 --state|-s)
f5ef2f7b 192 if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then
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193 echo n
194 else
f5ef2f7b 195 V="$(grep "^${CONFIG_}$ARG=" $FN)"
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196 if [ $? != 0 ] ; then
197 echo undef
198 else
f5ef2f7b 199 V="${V/#${CONFIG_}$ARG=/}"
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200 V="${V/#\"/}"
201 V="${V/%\"/}"
1925a276 202 V="${V//\\\"/\"}"
d6686da8 203 echo "${V}"
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204 fi
205 fi
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206 ;;
207
208 --enable-after|-E)
f5ef2f7b 209 set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A"
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210 ;;
211
212 --disable-after|-D)
f5ef2f7b 213 set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A"
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214 ;;
215
216 --module-after|-M)
f5ef2f7b 217 set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A"
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218 ;;
219
220 # undocumented because it ignores --file (fixme)
221 --refresh)
222 yes "" | make oldconfig
223 ;;
224
225 *)
d39648eb 226 echo "bad command: $CMD" >&2
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227 usage
228 ;;
229 esac
230done