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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
#!/bin/bash
# called by dracut
#
# Parses depmod configuration and calls instmods for out-of-tree kernel
# modules found. Specifically, kernel modules inside directories that
# come from the following places are included (if these kernel modules
# are present in modules.dep):
# - "search" configuration option;
# - "override" configuration option (matching an exact file name constructed
# by concatenating the provided directory and the kernel module name);
# - "external" configuration option (if "external" is a part of "search"
# configuration).
# (See depmod.d(5) for details.)
#
# This module has the following variables available for configuration:
# - "depmod_modules_dep" - Path to the modules.dep file
# ("$srcmods/modules.dep" by default);
# - "depmod_module_dir" - Directory containing kernel modules ("$srcmods"
# by default);
# - "depmod_configs" - array of depmod configuration paths to parse
# (as supplied to depmod -C, ("/run/depmod.d/"
# "/etc/depmod.d/" "/lib/depmod.d/") by default).
installkernel() {
: "${depmod_modules_dep:=$srcmods/modules.dep}"
: "${depmod_module_dir:=$srcmods}"
[[ -f ${depmod_modules_dep} ]] || return 0
# Message printers with custom prefix
local mod_name="kernel-modules-extra"
prinfo() { dinfo " ${mod_name}: $*"; }
prdebug() { ddebug " ${mod_name}: $*"; }
# Escape a string for usage as a part of extended regular expression.
# $1 - string to escape
re_escape() {
printf "%s" "$1" | sed 's/\([.+?^$\/\\|()\[]\|\]\)/\\\0/'
}
local cfg
local cfgs=()
local search_list=""
local overrides=()
local external_dirs=()
local e f
## Gathering and sorting configuration file list
[ -n "${depmod_configs[*]-}" ] \
|| depmod_configs=(/run/depmod.d /etc/depmod.d /lib/depmod.d)
for cfg in "${depmod_configs[@]}"; do
[ -e "$cfg" ] || {
prdebug "configuration source \"$cfg\" does not exist"
continue
}
# '/' is used as a separator between configuration name and
# configuration path
if [ -d "$cfg" ]; then
for f in "$cfg/"*.conf; do
[[ -e $f && ! -d $f ]] || {
prdebug "configuration source" \
"\"$cfg\" is ignored" \
"(directory or doesn't exist)"
continue
}
cfgs+=("${f##*/}/$f")
done
else
cfgs+=("${cfg##*/}/$cfg")
fi
done
if ((${#cfgs[@]} > 0)); then
mapfile -t cfgs < <(printf '%s\n' "${cfgs[@]}" | LANG=C sort -u -k1,1 -t '/' | cut -f 2- -d '/')
fi
## Parse configurations
for cfg in "${cfgs[@]}"; do
prdebug "parsing configuration file \"$cfg\""
local k v mod kverpat path
while read -r k v; do
case "$k" in
search)
search_list="$search_list $v"
prdebug "$cfg: added \"$v\" to the list of" \
"search directories"
;;
override) # module_name kver_pattern dir
read -r mod kverpat path <<< "$v"
if [[ ! $mod || ! $kverpat || ! $path ]]; then
prinfo "$cfg: ignoring incorrect" \
"override option: \"$k $v\""
continue
fi
if [[ '*' == "$kverpat" ]] \
|| [[ $kernel =~ $kverpat ]]; then
overrides+=("${path}/${mod}")
prdebug "$cfg: added override" \
"\"${path}/${mod}\""
else
prdebug "$cfg: override \"$v\" is" \
"ignored since \"$kverpat\"" \
"doesn't match \"$kernel\""
fi
;;
external) # kverpat dir
read -r kverpat path <<< "$v"
if [[ ! $kverpat || ! $path ]]; then
prinfo "$cfg: ignoring incorrect" \
"external option: \"$k $v\""
continue
fi
if [[ '*' == "$kverpat" ]] \
|| [[ $kernel =~ $kverpat ]]; then
external_dirs+=("$path")
prdebug "$cfg: added external" \
"directory \"$path\""
else
prdebug "$cfg: external directory" \
"\"$path\" is ignored since" \
"\"$kverpat\" doesn't match " \
"\"$kernel\""
fi
;;
'#'* | '') # comments and empty strings
;;
include | make_map_files) # ignored by depmod
;;
*)
prinfo "$cfg: unknown depmod configuration" \
"option \"$k $v\""
;;
esac
done < "$cfg"
done
# "updates built-in" is the default search list
: "${search_list:=updates}"
## Build a list of regular expressions for grepping modules.dep
local pathlist=()
for f in "${overrides[@]}"; do
pathlist+=("^$(re_escape "$f")")
done
for f in $(printf "%s" "$search_list"); do
# Ignoring builtin modules
[[ $f == "built-in" ]] && continue
if [[ $f == "external" ]]; then
for e in "${external_dirs[@]}"; do
pathlist+=("$(re_escape "${e%/}")/[^:]+")
done
fi
pathlist+=("$(re_escape "${f%/}")/[^:]+")
done
## Filter modules.dep, canonicalise the resulting filenames and supply
## them to instmods.
((${#pathlist[@]} > 0)) || return 0
printf "^%s\.ko(\.gz|\.bz2|\.xz|\.zst)?:\n" "${pathlist[@]}" \
| (LANG=C grep -E -o -f - -- "$depmod_modules_dep" || exit 0) \
| tr -d ':' \
| (
cd "$depmod_module_dir" || exit
xargs -r realpath -se --
) \
| instmods || return 1
return 0
}
|
