#!/bin/bash
#
# This script takes the merged config files and processes them through oldconfig
# and listnewconfig
#
# Globally disable suggestion of appending '|| exit' or '|| return' to cd/pushd/popd commands
# shellcheck disable=SC2164
usage()
{
# alphabetical order please
echo "process_configs.sh [ options ] package_name kernel_version"
echo " -a: report all errors, equivalent to [-c -n -w -i]"
echo " -c: error on mismatched config options"
echo " -i: continue on error"
echo " -n: error on unset config options"
echo " -t: test run, do not overwrite original config"
echo " -w: error on misconfigured config options"
echo " -z: commit new configs to pending directory"
echo ""
echo " A special CONFIG file tag, process_configs_known_broken can be added as a"
echo " comment to any CONFIG file. This tag indicates that there is no way to "
echo " fix a CONFIG's entry. This tag should only be used in extreme cases"
echo " and is not to be used as a workaround to solve CONFIG problems."
exit 1
}
die()
{
echo "$1"
exit 1
}
get_cross_compile()
{
arch=$1
if [[ "$CC_IS_CLANG" -eq 1 ]]; then
echo "$arch"
else
echo "scripts/dummy-tools/"
fi
}
# stupid function to find top of tree to do kernel make configs
switch_to_toplevel()
{
path="$(pwd)"
while test -n "$path"
do
test -e "$path"/MAINTAINERS && \
test -d "$path"/drivers && \
break
path=$(dirname "$path")
done
test -n "$path" || die "Can't find toplevel"
echo "$path"
}
checkoptions()
{
count=$3
variant=$4
/usr/bin/awk '
/is not set/ {
split ($0, a, "#");
split(a[2], b);
if (NR==FNR) {
configs[b[1]]="is not set";
} else {
if (configs[b[1]] != "" && configs[b[1]] != "is not set")
print "Found # "b[1] " is not set, after generation, had " b[1] " " configs[b[1]] " in Source tree";
}
}
/=/ {
split ($0, a, "=");
if (NR==FNR) {
configs[a[1]]=a[2];
} else {
if (configs[a[1]] != "" && configs[a[1]] != a[2])
print "Found "a[1]"="a[2]" after generation, had " a[1]"="configs[a[1]]" in Source tree";
}
}
' "$1" "$2" > .mismatches${count}
checkoptions_error=false
if test -s .mismatches${count}
then
while read -r LINE
do
if find "${REDHAT}"/configs -name "$(echo "$LINE" | awk -F "=" ' { print $1 } ' | awk ' { print $2 }')" -print0 | xargs -0 grep ^ | grep -q "process_configs_known_broken"; then
# This is a known broken config.
# See script help warning.
checkoptions_error=false
else
checkoptions_error=true
break
fi
done < .mismatches${count}
! $checkoptions_error && return
sed -i "1s/^/Error: Mismatches found in configuration files for ${arch} ${variant}\n/" .mismatches${count}
else
rm -f .mismatches${count}
fi
}
parsenewconfigs()
{
tmpdir=$(mktemp -d)
# This awk script reads the output of make listnewconfig
# and puts it into CONFIG_FOO files. Using the output of
# listnewconfig is much easier to ensure we get the default
# output.
/usr/bin/awk -v BASE="$tmpdir" '
/is not set/ {
split ($0, a, "#");
split(a[2], b);
OUT_FILE=BASE"/"b[1];
print $0 >> OUT_FILE;
}
/=/ {
split ($0, a, "=");
OUT_FILE=BASE"/"a[1];
if (a[2] == "n")
print "# " a[1] " is not set" >> OUT_FILE;
else
print $0 >> OUT_FILE;
}
' .newoptions
# This awk script parses the output of helpnewconfig.
# Each option is separated between ----- markers
# The goal is to put all the help text as a comment in
# each CONFIG_FOO file. Because of how awk works
# there's a lot of moving files around and catting to
# get what we need.
/usr/bin/awk -v BASE="$tmpdir" '
BEGIN { inpatch=0;
outfile="none";
symbol="none"; }
/^Symbol: .*$/ {
split($0, a, " ");
symbol="CONFIG_"a[2];
outfile=BASE "/fake_"symbol
}
/-----/ {
if (inpatch == 0) {
inpatch = 1;
}
else {
if (symbol != "none") {
system("cat " outfile " " BASE "/" symbol " > " BASE "/tmpf");
system("mv " BASE "/tmpf " BASE "/" symbol);
symbol="none"
}
outfile="none"
inpatch = 0;
}
}
!/-----/ {
if (inpatch == 1 && outfile != "none") {
print "# "$0 >> outfile;
}
}
' .helpnewconfig
pushd "$tmpdir" &> /dev/null
rm fake_*
popd &> /dev/null
for f in "$tmpdir"/*; do
[[ -e "$f" ]] || break
cp "$f" "$SCRIPT_DIR/pending$FLAVOR/generic/"
done
rm -rf "$tmpdir"
}
function commit_new_configs()
{
# assume we are in $source_tree/configs, need to get to top level
pushd "$(switch_to_toplevel)" &>/dev/null
for cfg in "$SCRIPT_DIR/${PACKAGE_NAME}${KVERREL}${SUBARCH}"*.config
do
arch=$(head -1 "$cfg" | cut -b 3-)
cfgtmp="${cfg}.tmp"
cfgorig="${cfg}.orig"
cat "$cfg" > "$cfgorig"
if [ "$arch" = "EMPTY" ]
then
# This arch is intentionally left blank
continue
fi
echo -n "Checking for new configs in $cfg ... "
make ${MAKEOPTS} ARCH="$arch" CROSS_COMPILE=$(get_cross_compile $arch) KCONFIG_CONFIG="$cfgorig" listnewconfig >& .listnewconfig
grep -E 'CONFIG_' .listnewconfig > .newoptions
if test -s .newoptions
then
make ${MAKEOPTS} ARCH="$arch" CROSS_COMPILE=$(get_cross_compile $arch) KCONFIG_CONFIG="$cfgorig" helpnewconfig >& .helpnewconfig
parsenewconfigs
fi
rm .newoptions
echo "done"
done
git add "$SCRIPT_DIR/pending$FLAVOR"
git commit -m "[redhat] AUTOMATIC: New configs"
}
function process_config()
{
local cfg
local arch
local cfgtmp
local cfgorig
local count
local variant
cfg=$1
count=$2
arch=$(head -1 "$cfg" | cut -b 3-)
if [ "$arch" = "EMPTY" ]
then
# This arch is intentionally left blank
return
fi
variant=$(basename "$cfg" | cut -d"-" -f3- | cut -d"." -f1)
cfgtmp="${cfg}.tmp"
cfgorig="${cfg}.orig"
cat "$cfg" > "$cfgorig"
echo "Processing $cfg ... "
make ${MAKEOPTS} ARCH="$arch" CROSS_COMPILE=$(get_cross_compile $arch) KCONFIG_CONFIG="$cfgorig" listnewconfig >& .listnewconfig${count}
grep -E 'CONFIG_' .listnewconfig${count} > .newoptions${count}
if test -n "$NEWOPTIONS" && test -s .newoptions${count}
then
echo "Found unset config items in ${arch} ${variant}, please set them to an appropriate value" >> .errors${count}
cat .newoptions${count} >> .errors${count}
rm .newoptions${count}
RETURNCODE=1
fi
rm .newoptions${count}
grep -E 'config.*warning' .listnewconfig${count} > .warnings${count}
if test -n "$CHECKWARNINGS" && test -s .warnings${count}
then
echo "Found misconfigured config items in ${arch} ${variant}, please set them to an appropriate value" >> .errors${count}
cat .warnings${count} >> .errors${count}
rm .warnings${count}
fi
rm .warnings${count}
rm .listnewconfig${count}
make ${MAKEOPTS} ARCH="$arch" CROSS_COMPILE=$(get_cross_compile $arch) KCONFIG_CONFIG="$cfgorig" olddefconfig > /dev/null || exit 1
echo "# $arch" > "$cfgtmp"
cat "$cfgorig" >> "$cfgtmp"
if test -n "$CHECKOPTIONS"
then
checkoptions "$cfg" "$cfgtmp" "$count" "$variant"
fi
# if test run, don't overwrite original
if test -n "$TESTRUN"
then
rm -f "$cfgtmp"
else
mv "$cfgtmp" "$cfg"
fi
rm -f "$cfgorig"
echo "Processing $cfg complete"
}
function process_configs()
{
# assume we are in $source_tree/configs, need to get to top level
pushd "$(switch_to_toplevel)" &>/dev/null
# The next line is throwaway code for transition to parallel
# processing. Leaving this line in place is harmless, but it can be
# removed the next time anyone updates this function.
[ -f .mismatches ] && rm -f .mismatches
count=0
for cfg in "$SCRIPT_DIR/${PACKAGE_NAME}${KVERREL}${SUBARCH}"*.config
do
if [ "$count" -eq 0 ]; then
# do the first one by itself so that tools are built
process_config "$cfg" "$count"
fi
process_config "$cfg" "$count" &
waitpids[${count}]=$!
((count++))
while [ "$(jobs | grep Running | wc -l)" -ge $RHJOBS ]; do :; done
done
for pid in ${waitpids[*]}; do
wait ${pid}
done
rm "$SCRIPT_DIR"/*.config*.old
if ls .errors* 1> /dev/null 2>&1; then
RETURNCODE=1
cat .errors*
rm .errors* -f
fi
if ls .mismatches* 1> /dev/null 2>&1; then
RETURNCODE=1
cat .mismatches*
rm .mismatches* -f
fi
popd > /dev/null
[ $RETURNCODE -eq 0 ] && echo "Processed config files are in $SCRIPT_DIR"
}
CHECKOPTIONS=""
NEWOPTIONS=""
TESTRUN=""
CHECKWARNINGS=""
MAKEOPTS=""
CC_IS_CLANG=0
RETURNCODE=0
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
-a)
CHECKOPTIONS="x"
NEWOPTIONS="x"
CHECKWARNINGS="x"
;;
-c)
CHECKOPTIONS="x"
;;
-h)
usage
;;
-n)
NEWOPTIONS="x"
;;
-t)
TESTRUN="x"
;;
-w)
CHECKWARNINGS="x"
;;
-z)
COMMITNEWCONFIGS="x"
;;
-m)
shift
if [ "$1" = "CC=clang" -o "$1" = "LLVM=1" ]; then
CC_IS_CLANG=1
fi
MAKEOPTS="$MAKEOPTS $1"
;;
*)
break;;
esac
shift
done
PACKAGE_NAME="${1:-kernel-rt}" # defines the package name used
KVERREL="$(test -n "$2" && echo "-$2" || echo "")"
SUBARCH="$(test -n "$3" && echo "-$3" || echo "")"
FLAVOR="$(test -n "$4" && echo "-$4" || echo "-common")"
RHJOBS="$(test -n "$5" && echo "$5" || nproc --all)"
SCRIPT=$(readlink -f "$0")
SCRIPT_DIR=$(dirname "$SCRIPT")
# Most RHEL options are options we want in Fedora so RHEL pending settings head
# to common/
if [ "$FLAVOR" = "-rhel" ]
then
FLAVOR="-common"
fi
# to handle this script being a symlink
cd "$SCRIPT_DIR"
if test -n "$COMMITNEWCONFIGS"; then
commit_new_configs
else
process_configs
fi
exit $RETURNCODE