blob: 3f895d9cfed910f5c0d1198891e4b920a15a8c19 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
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
mkdir -p $out/lib/firmware
for module in $(cat 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.
for i in $(modinfo -b $kernel --set-version "$version" -F firmware $module | grep -v '^name:'); do
mkdir -p "$out/lib/firmware/$(dirname "$i")"
echo "firmware for $module: $i"
cp "$firmware/lib/firmware/$i" "$out/lib/firmware/$i" 2>/dev/null || if test -z "$allowMissing"; then exit 1; fi
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
|
