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document kernel command-line parameters

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This commit is contained in:
illiliti
2020-09-07 09:54:12 +03:00
parent da3671d873
commit a5c5f34a66
10 changed files with 568 additions and 258 deletions
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26
hooks/luks/luks
View File

@ -3,9 +3,6 @@
#
# false positive
# shellcheck disable=2154
#
# word splitting is safe by design
# shellcheck disable=2086
{
[ "$hostonly" = 1 ] &&
for _module in \
@ -21,16 +18,21 @@
# see https://bugs.archlinux.org/task/56771
[ -e /lib/libgcc_s.so.1 ] && copy_file /lib/libgcc_s.so.1 /lib 755 1
IFS=,; set -- $luks_opts; unset IFS
[ "$luks_key" ] && {
copy_file "${luks_key#*=}" /root 400 0
for opt; do case "${opt%%=*}" in
key | header)
copy_file "${opt#*=}" /root 400 0
sed "s|${luks_key#*=}|/root/key|" \
"${tmpdir}/etc/tinyramfs/config" > "${tmpdir}/_"
sed "s|${opt#*=}|/root/${opt%%=*}|" \
"${tmpdir}/etc/tinyramfs/config" > "${tmpdir}/_"
mv "${tmpdir}/_" "${tmpdir}/etc/tinyramfs/config"
}
mv "${tmpdir}/_" "${tmpdir}/etc/tinyramfs/config"
chmod 600 "${tmpdir}/etc/tinyramfs/config"
esac || panic; done
[ "$luks_header" ] && {
copy_file "${luks_header#*=}" /root 400 0
sed "s|${luks_header#*=}|/root/header|" \
"${tmpdir}/etc/tinyramfs/config" > "${tmpdir}/_"
mv "${tmpdir}/_" "${tmpdir}/etc/tinyramfs/config"
}
}

22
hooks/luks/luks.init
View File

@ -5,32 +5,18 @@
# shellcheck disable=2154
#
# word splitting is safe by design
# shellcheck disable=2086,2068
# shellcheck disable=2068
{
[ "$break" = luks ] && { print "break before unlock_luks()"; sh; }
export DM_DISABLE_UDEV=1
mkdir -p /run/cryptsetup
IFS=,; set -- $luks_opts; unset IFS
for opt; do case "$opt" in
discard=1) luks_discard="--allow-discards" ;;
header=*) luks_header="--${opt}" ;;
name=*) luks_name="${opt#*=}" ;;
root=*) luks_root="${opt#*=}" ;;
key=*) luks_key="-d ${opt#*=}" ;;
esac; done
resolve_device "$luks_root"
set -- \
"$luks_key" "$luks_header" "$luks_discard" \
"$device" "${luks_name:-crypt-${device##*/}}"
# libdevice-mapper assumes that udev has dm rules
# which is not true because we use our device-helper for dm stuff
# this variable fixes possible(?) hang
export DM_DISABLE_UDEV=1
"${luks_discard:+--allow-discards}" "${luks_header:+--header $luks_header}" \
"${luks_key:+-d $luks_key}" "$device" "${luks_name:-crypt-${device##*/}}"
cryptsetup open $@ || panic "failed to unlock LUKS"
}

12
hooks/lvm/lvm
View File

@ -3,9 +3,6 @@
#
# false positive
# shellcheck disable=2154
#
# word splitting is safe by design
# shellcheck disable=2086
{
[ "$hostonly" = 1 ] &&
for _module in \
@ -29,17 +26,10 @@
use_lvmetad = 0
}"
IFS=,; set -- $lvm_opts; unset IFS
for opt; do case "$opt" in
config=1) embed_lvm_config=
esac; done
mkdir -p "${tmpdir}/etc/lvm"
lvm config \
--config "$lvm_config" \
${embed_lvm_config+--mergedconfig} \
${lvm_config:+--mergedconfig} \
> "${tmpdir}/etc/lvm/lvm.conf"
}

25
hooks/lvm/lvm.init
View File

@ -5,35 +5,22 @@
# shellcheck disable=2154
#
# word splitting is safe by design
# shellcheck disable=2086,2068
# shellcheck disable=2068
{
[ "$break" = lvm ] && { print "break before trigger_lvm()"; sh; }
export DM_DISABLE_UDEV=1
mkdir -p /run/lvm /run/lock/lvm
IFS=,; set -- $lvm_opts; unset IFS
for opt; do case "$opt" in
discard=1) lvm_discard="--config=devices{issue_discards=1}" ;;
config=0) : > /etc/lvm/lvm.conf ;;
group=*) lvm_group="${opt#*=}" ;;
name=*) lvm_name="/${opt#*=}" ;;
tag=*) lvm_tag="@${opt#*=}" ;;
esac; done
set -- "--sysinit" "-qq" "-aay" "$lvm_discard"
# libdevice-mapper assumes that udev have dm rules
# which is not true because we use our device-helper for dm stuff
# this variable fixes possible(?) hang
export DM_DISABLE_UDEV=1
set -- \
--sysinit -qq -aay "${lvm_discard:+--config=devices{issue_discards=1}}"
if [ "$lvm_group" ] && [ "$lvm_name" ]; then
lvm lvchange $@ "${lvm_group}${lvm_name}"
lvm lvchange $@ "${lvm_group}/${lvm_name}"
elif [ "$lvm_group" ]; then
lvm vgchange $@ "$lvm_group"
elif [ "$lvm_tag" ]; then
lvm lvchange $@ "$lvm_tag"
lvm lvchange $@ "@${lvm_tag}"
else
lvm vgchange $@
fi || panic "failed to trigger LVM"