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#!/bin/bash
# This is in 'udev' and 'systemd' hook... Let's hope we have
# it in mkinitcpio soon.
# https://github.com/archlinux/mkinitcpio/pull/54
add_udev_rule() {
# Add an udev rules file to the initcpio image. Dependencies on binaries
# will be discovered and added.
# $1: path to rules file (or name of rules file)
local rules="$1" rule= key= value= binary=
if [[ ${rules:0:1} != '/' ]]; then
rules=$(PATH=/usr/lib/udev/rules.d:/lib/udev/rules.d type -P "$1")
fi
if [[ -z $rules ]]; then
# complain about not found rules
return 1
fi
add_file "$rules" /usr/lib/udev/rules.d/"${rules##*/}"
while IFS=, read -ra rule; do
# skip empty lines, comments
[[ -z $rule || $rule = @(+([[:space:]])|#*) ]] && continue
for pair in "${rule[@]}"; do
IFS=' =' read -r key value <<< "$pair"
case $key in
RUN@({program}|+)|IMPORT{program}|ENV{REMOVE_CMD})
# strip quotes
binary=${value//[\"\']/}
# just take the first word as the binary name
binary=${binary%% *}
[[ ${binary:0:1} == '$' ]] && continue
if [[ ${binary:0:1} != '/' ]]; then
binary=$(PATH=/usr/lib/udev:/lib/udev type -P "$binary")
fi
add_binary "$binary"
;;
esac
done
done <"$rules"
}
build() {
local rules tool
map add_binary \
'/usr/lib/systemd/systemd-udevd' \
'/usr/bin/udevadm' \
'/usr/bin/systemd-tmpfiles'
map add_udev_rule \
'50-udev-default.rules' \
'60-persistent-storage.rules' \
'64-btrfs.rules' \
'80-drivers.rules'
map add_file \
'/usr/lib/udev/ata_id' \
'/usr/lib/udev/scsi_id'
add_runscript
}
help() {
cat <<HELPEOF
This hook adds the udev daemon to the initramfs, allowing for dynamic loading
of modules and reliable detection of the root device via tags (e.g. UUID or
LABEL). Do not remove this hook unless you are using the systemd hook, or you
know what you're doing.
HELPEOF
}
# vim: set ft=sh ts=4 sw=4 et:
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