kernel-source/split-modules

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#!/bin/bash
#
# given a Module.base and modules.dep, generate list
# of base / supported / unsupported modules
set -e
export LC_COLLATE=C
usage()
{
echo "Usage: ${0##*/} -b Module.base [-d dir] [-i] [-e] [-o outdir]"
echo " -i Ignore supported.conf errors"
echo " -e Create the -extra filelist (otherwise, treat all modules as supported)"
}
options=$(getopt -o b:d:o:ie -- "$@")
if test $? -ne 0; then
usage >&2
exit 1
fi
eval set -- "$options"
opt_builddir=
opt_out=.
opt_dir=.
opt_ignore_errors=false
opt_extra=false
while test $# -gt 0; do
opt=$1
shift
case "$opt" in
-b | -d | -o)
arg=$1
shift
esac
case "$opt" in
-b)
opt_builddir=$arg ;;
-d)
opt_dir=$arg ;;
-o)
opt_out=$arg ;;
-i)
opt_ignore_errors=true ;;
-e)
opt_extra=true ;;
--)
break ;;
*)
echo "Unknown option $opt" >&2
exit 1
esac
done
if test -z "$opt_builddir"; then
usage >&2
exit 1
fi
trap 'rm -rf "$tmp"' EXIT
tmp=$(mktemp -d)
mkdir "$tmp/empty"
find "$opt_dir" -type f \( -name '*.ko' -o -name '*.ko.xz' -o -name '*.ko.gz' -o -name '*.ko.zst' \) -printf '/%P\n' | \
awk -F/ '{ n=$NF; gsub(/-/, "_", n); sub(/\.ko(\.xz|\.gz|\.zst)?$/, "", n); print n " " $0; }' | \
sort >"$tmp/all"
err=false
while read mod path; do
if $opt_extra; then
support=$(/sbin/modinfo -F supported "$opt_dir/$path")
else
support=yes
fi
case "$support" in
yes | external)
echo "$mod"
;;
no)
;;
"")
echo "warning: $mod not listed in supported.conf" >&2
;;
*)
echo "error: invalid support flag for $mod: $support" >&2
err=true
;;
esac
done <"$tmp/all" | sort -u >"$tmp/supp"
if $err; then
exit 1
fi
modules_dep=$(find "$opt_dir" -type f -name modules.dep)
if test -z "$modules_dep"; then
echo "Cannot find modules.dep in $opt_dir" >&2
exit 1
fi
(
echo '%:
@echo $@
ifdef EXPLAIN
@for dep in $^; do echo "$$dep needed by $@"; done >> $(EXPLAIN)
endif
'
sed -r 's:[^ ]*/([^/]*)\.ko(\.xz|\.gz|\.zst)?\>:\1:g; y/-/_/' "$modules_dep"
) >"$tmp/dep"
add_dependent_modules()
{
xargs -r make $MAKE_ARGS EXPLAIN=$1 -rRs -C "$tmp/empty" -f "$tmp/dep" | sort -u
}
# base
if test -f "$opt_builddir/Module.base"; then
sed 'y/-/_/' <"$opt_builddir/Module.base" | add_dependent_modules >"$tmp/base"
else
touch "$tmp/base"
fi
join -j 1 -o 2.2 "$tmp/base" "$tmp/all" >"$opt_out/base-modules"
# base firmware
kver=$(make $MAKE_ARGS -s -C "$opt_builddir" kernelrelease)
fw_dir=/lib/firmware/$kver
test -d $opt_dir/usr$fw_dir && fw_dir=/usr$fw_dir
if test -d "$opt_dir$fw_dir"; then
join <(/sbin/modinfo -F firmware \
$(sed "s:^:$opt_dir:" "$opt_out/base-modules") | sort) \
<(find "$opt_dir$fw_dir" -type f -printf '%P\n' | sort)
fi | sed "s:^:$fw_dir:" >"$opt_out/base-firmware"
# kmps
for f in "$opt_builddir"/Module.*-kmp; do
test -f "$f" || continue
kmp=${f##*/Module.}
sed 'y/-/_/' <"$f" >"$tmp/$kmp"
join -j 1 -o 2.2 "$tmp/$kmp" "$tmp/all" >"$opt_out/$kmp-modules"
cat "$tmp/$kmp"
done | sort -u >"$tmp/kmp-all"
join -v1 "$tmp/supp" "$tmp/kmp-all" >"$tmp/supp-main"
# main
add_dependent_modules "$tmp/supp-explain" <"$tmp/supp-main" >"$tmp/supp-all"
if ! cmp -s "$tmp/supp-main" "$tmp/supp-all"; then
# FIXME: Error message not accurate if a supported KMP module is
# needed by a module in the main package
echo "The following unsupported modules are used by supported modules:" >&2
join -j1 -a2 <(sort "$tmp/supp-explain") \
<(join -v2 "$tmp/supp-main" "$tmp/supp-all") >&2
echo "Please fix supported.conf." >&2
if ! $opt_ignore_errors; then
exit 1
fi
fi
join -j 1 -o 2.2 "$tmp/supp-all" "$tmp/all" >"$opt_out/main-modules"
# unsupported
join -j 1 -v 2 -o 2.2 <(sort -u "$tmp/supp-all" "$tmp/kmp-all") "$tmp/all" | sort -u > "$opt_out/unsupported-modules"
# split again to extra and optional
if $opt_extra && test -f "$opt_builddir/Module.optional"; then
declare -A modmarks wcmarks
wcpaths=()
while read mark path; do
case $path in
*.ko.xz|*.ko.gz|*.ko.zst)
path=${path%.*};;
esac
path=${path%.ko}
mod=${path##*/}
modmarks["$mod"]="$mark"
# paths with wildcards need to be verified sequentially, so we keep
# the paths in the array wcpaths and each mark in wcmarks[]
case "$path" in
*[\*\?\[]*)
wcpaths[${#wcpaths[@]}]="$path"
wcmarks["$path"]="$mark";;
esac
done < "$opt_builddir/Module.optional"
while read xpath; do
path=$xpath
case $path in
*.ko.xz|*.ko.gz|*.ko.zst)
path=${path%.*};;
esac
path=${path%.ko}
mod=${path##*/}
x=${modmarks["$mod"]}
if [ -n "$x" ]; then
test x"$x" = x"-" && echo "$xpath"
continue
fi
# unmatched modules must be handled via wildcard
path=${path#/lib/modules/*/kernel/}
for m in "${wcpaths[@]}"; do
case "$path" in
($m)
test x${wcmarks["$m"]} = x"-" && echo "$xpath"
break;;
esac
done
done < "$opt_out/unsupported-modules" | sort > "$tmp/unsupp-extra"
cat "$tmp/supp-all" "$tmp/kmp-all" "$tmp/unsupp-extra" | \
sed -r 's:[^ ]*/([^/]*)\.ko(\.xz|\.gz|\.zst)?\>:\1:g; y/-/_/' | sort -u > "$tmp/unsupp-extra-all"
add_dependent_modules "$tmp/unsupp-explain" <"$tmp/unsupp-extra-all" >"$tmp/unsupp-extra-dep"
if ! cmp -s "$tmp/unsupp-extra-all" "$tmp/unsupp-extra-dep"; then
echo "The following optional modules are used by extra modules:" >&2
join -j1 -a2 <(sort "$tmp/unsupp-explain") \
<(join -v2 "$tmp/unsupp-extra-all" "$tmp/unsupp-extra-dep") >&2
echo "Please fix supported.conf." >&2
if ! $opt_ignore_errors; then
exit 1
fi
fi
join -j 1 -v 2 "$tmp/unsupp-extra" "$opt_out/unsupported-modules" > "$opt_out/optional-modules"
mv "$tmp/unsupp-extra" "$opt_out/unsupported-modules"
fi
exit 0