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contrib; dracut: flatten zfs-load-key, simplify zfs-env-bootfs 

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13291
This commit is contained in:
наб 2022-04-04 22:52:43 +02:00 committed by Brian Behlendorf
parent 245529d85f
commit fec2c613a4
3 changed files with 35 additions and 44 deletions
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5
contrib/dracut/90zfs/module-setup.sh.in
View File

@ -9,13 +9,10 @@ check() {
for tool in "zgenhostid" "zpool" "zfs" "mount.zfs"; do
command -v "${tool}" >/dev/null || return 1
done
return 0
}
depends() {
echo udev-rules
return 0
}
installkernel() {
@ -39,7 +36,6 @@ install() {
{ dfatal "Failed to install essential binaries"; exit 1; }
# Adapted from https://github.com/zbm-dev/zfsbootmenu
if ! ldd "$(command -v zpool)" | grep -qF 'libgcc_s.so'; then
# On systems with gcc-config (Gentoo, Funtoo, etc.), use it to find libgcc_s
if command -v gcc-config >/dev/null; then
@ -79,7 +75,6 @@ install() {
fi
if dracut_module_included "systemd"; then
inst_simple "${systemdsystemunitdir}/zfs-import.target"
systemctl -q --root "${initdir}" add-wants initrd.target zfs-import.target

2
contrib/dracut/90zfs/zfs-env-bootfs.service.in
View File

@ -8,7 +8,7 @@ Before=zfs-import.target
[Service]
Type=oneshot
ExecStart=/bin/sh -c "exec systemctl set-environment BOOTFS=$(@sbindir@/zpool list -H -o bootfs | grep -m1 -v '^-$')"
ExecStart=/bin/sh -c "exec systemctl set-environment BOOTFS=$(@sbindir@/zpool list -H -o bootfs | grep -m1 -vFx -)"
[Install]
WantedBy=zfs-import.target

26
contrib/dracut/90zfs/zfs-load-key.sh.in
View File

@ -20,17 +20,15 @@ if [ "$BOOTFS" = "zfs:AUTO" ]; then
BOOTFS="$(zpool get -Ho value bootfs | grep -m1 -vFx -)"
fi
# if pool encryption is active and the zfs command understands '-o encryption'
if [ "$(zpool list -H -o feature@encryption "${BOOTFS%%/*}")" = 'active' ]; then
# if the root dataset has encryption enabled
ENCRYPTIONROOT="$(zfs get -H -o value encryptionroot "${BOOTFS}")"
if ! [ "${ENCRYPTIONROOT}" = "-" ]; then
KEYSTATUS="$(zfs get -H -o value keystatus "${ENCRYPTIONROOT}")"
# continue only if the key needs to be loaded
[ "$KEYSTATUS" = "unavailable" ] || exit 0
[ "$(zpool get -Ho value feature@encryption "${BOOTFS%%/*}")" = 'active' ] || return 0
KEYLOCATION="$(zfs get -H -o value keylocation "${ENCRYPTIONROOT}")"
case "${KEYLOCATION%%://*}" in
ENCRYPTIONROOT="$(zfs get -Ho value encryptionroot "${BOOTFS}")"
[ "${ENCRYPTIONROOT}" = "-" ] && return 0
[ "$(zfs get -Ho value keystatus "${ENCRYPTIONROOT}")" = "unavailable" ] || return 0
KEYLOCATION="$(zfs get -H -o value keylocation "${ENCRYPTIONROOT}")"
case "${KEYLOCATION%%://*}" in
prompt)
for _ in 1 2 3; do
systemd-ask-password --no-tty "Encrypted ZFS password for ${BOOTFS}" | zfs load-key "${ENCRYPTIONROOT}" && break
@ -44,18 +42,16 @@ if [ "$(zpool list -H -o feature@encryption "${BOOTFS%%/*}")" = 'active' ]; then
KEYFILE="${KEYLOCATION#file://}"
[ -r "${KEYFILE}" ] || udevadm settle
[ -r "${KEYFILE}" ] || {
info "Waiting for key ${KEYFILE} for ${ENCRYPTIONROOT}..."
info "ZFS: Waiting for key ${KEYFILE} for ${ENCRYPTIONROOT}..."
for _ in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
sleep 0.5s
[ -r "${KEYFILE}" ] && break
done
}
[ -r "${KEYFILE}" ] || warn "Key ${KEYFILE} for ${ENCRYPTIONROOT} hasn't appeared. Trying anyway."
[ -r "${KEYFILE}" ] || warn "ZFS: Key ${KEYFILE} for ${ENCRYPTIONROOT} hasn't appeared. Trying anyway."
zfs load-key "${ENCRYPTIONROOT}"
;;
*)
zfs load-key "${ENCRYPTIONROOT}"
;;
esac
fi
fi
esac