mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-23 23:43:30 +00:00
378177d269
Closes #302291
Closes #301536
The following things have changed:
* For 5.7+: ZSWAP compressor uses zstd now.
* For 5.11+: ZRAM compressor uses zstd now.
* For 5.13+: kernel modules are compressed with zstd instead of xz.
* For 5.19+: support zstd-compressed firmware.
The modules-closure functionality needed explicit support for copying
over `.zst` files. Also, the VM image builder used busybox's `insmod`
before which doesn't support zstd. Switched to `kmod` and added xz/zstd
as dependencies for it, similar to how it's done for the actual stage1
in d33e52b253. The use of `kmod` here
doesn't seem to be such a big deal since it's only a build-time
dependency.
101 lines
3.6 KiB
Bash
101 lines
3.6 KiB
Bash
source $stdenv/setup
|
|
|
|
# When no modules are built, the $out/lib/modules directory will not
|
|
# exist. Because the rest of the script assumes it does exist, we
|
|
# handle this special case first.
|
|
if ! test -d "$kernel/lib/modules"; then
|
|
if test -z "$rootModules" || test -n "$allowMissing"; then
|
|
mkdir -p "$out"
|
|
exit 0
|
|
else
|
|
echo "Required modules: $rootModules"
|
|
echo "Can not derive a closure of kernel modules because no modules were provided."
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
version=$(cd $kernel/lib/modules && ls -d *)
|
|
|
|
echo "kernel version is $version"
|
|
|
|
# Determine the dependencies of each root module.
|
|
mkdir -p $out/lib/modules/"$version"
|
|
touch closure
|
|
for module in $rootModules; do
|
|
echo "root module: $module"
|
|
modprobe --config no-config -d $kernel --set-version "$version" --show-depends "$module" \
|
|
| while read cmd module args; do
|
|
case "$cmd" in
|
|
builtin)
|
|
touch found
|
|
echo "$module" >>closure
|
|
echo " builtin dependency: $module";;
|
|
insmod)
|
|
touch found
|
|
if ! test -e "$module"; then
|
|
echo " dependency not found: $module"
|
|
exit 1
|
|
fi
|
|
target=$(echo "$module" | sed "s^$NIX_STORE.*/lib/modules/^$out/lib/modules/^")
|
|
if test -e "$target"; then
|
|
echo " dependency already copied: $module"
|
|
continue
|
|
fi
|
|
echo "$module" >>closure
|
|
echo " copying dependency: $module"
|
|
mkdir -p $(dirname $target)
|
|
cp "$module" "$target"
|
|
# If the kernel is compiled with coverage instrumentation, it
|
|
# contains the paths of the *.gcda coverage data output files
|
|
# (which it doesn't actually use...). Get rid of them to prevent
|
|
# the whole kernel from being included in the initrd.
|
|
nuke-refs "$target"
|
|
echo "$target" >> $out/insmod-list;;
|
|
*)
|
|
echo " unexpected modprobe output: $cmd $module"
|
|
exit 1;;
|
|
esac
|
|
done || test -n "$allowMissing"
|
|
if ! test -e found; then
|
|
echo " not found"
|
|
if test -z "$allowMissing"; then
|
|
exit 1
|
|
fi
|
|
else
|
|
rm found
|
|
fi
|
|
done
|
|
|
|
cd "$firmware"
|
|
for module in $(< ~-/closure); do
|
|
# for builtin modules, modinfo will reply with a wrong output looking like:
|
|
# $ modinfo -F firmware unix
|
|
# name: unix
|
|
#
|
|
# There is a pending attempt to fix this:
|
|
# https://github.com/NixOS/nixpkgs/pull/96153
|
|
# https://lore.kernel.org/linux-modules/20200823215433.j5gc5rnsmahpf43v@blumerang/T/#u
|
|
#
|
|
# For now, the workaround is just to filter out the extraneous lines out
|
|
# of its output.
|
|
modinfo -b $kernel --set-version "$version" -F firmware $module | grep -v '^name:' | while read -r i; do
|
|
echo "firmware for $module: $i"
|
|
for name in "$i" "$i.xz" "$i.zst" ""; do
|
|
[ -z "$name" ] && echo "WARNING: missing firmware $i for module $module"
|
|
if cp -v --parents --no-preserve=mode lib/firmware/$name "$out" 2>/dev/null; then
|
|
break
|
|
fi
|
|
done
|
|
done || :
|
|
done
|
|
|
|
# copy module ordering hints for depmod
|
|
cp $kernel/lib/modules/"$version"/modules.order $out/lib/modules/"$version"/.
|
|
cp $kernel/lib/modules/"$version"/modules.builtin $out/lib/modules/"$version"/.
|
|
|
|
depmod -b $out -a $version
|
|
|
|
# remove original hints from final derivation
|
|
rm $out/lib/modules/"$version"/modules.order
|
|
rm $out/lib/modules/"$version"/modules.builtin
|