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#!/bin/bash
. /lib/dracut-zfs-lib.sh
ZFS_DATASET=""
ZFS_POOL=""
case "${root}" in
zfs:*) ;;
*) return ;;
esac
GENERATOR_FILE=/run/systemd/generator/sysroot.mount
GENERATOR_EXTENSION=/run/systemd/generator/sysroot.mount.d/zfs-enhancement.conf
if [ -e "$GENERATOR_FILE" ] && [ -e "$GENERATOR_EXTENSION" ] ; then
# If the ZFS sysroot.mount flag exists, the initial RAM disk configured
# it to mount ZFS on root. In that case, we bail early. This flag
# file gets created by the zfs-generator program upon successful run.
info "ZFS: There is a sysroot.mount and zfs-generator has extended it."
info "ZFS: Delegating root mount to sysroot.mount."
# Let us tell the initrd to run on shutdown.
# We have a shutdown hook to run
# because we imported the pool.
# We now prevent Dracut from running this thing again.
for zfsmounthook in "$hookdir"/mount/*zfs* ; do
if [ -f "$zfsmounthook" ] ; then
rm -f "$zfsmounthook"
fi
done
return
fi
info "ZFS: No sysroot.mount exists or zfs-generator did not extend it."
info "ZFS: Mounting root with the traditional mount-zfs.sh instead."
# Delay until all required block devices are present.
modprobe zfs 2>/dev/null
udevadm settle
if [ "${root}" = "zfs:AUTO" ] ; then
ZFS_DATASET="$(find_bootfs)"
if [ $? -ne 0 ] ; then
zpool import -N -a ${ZPOOL_IMPORT_OPTS}
ZFS_DATASET="$(find_bootfs)"
if [ $? -ne 0 ] ; then
warn "ZFS: No bootfs attribute found in importable pools."
export_all -F
rootok=0
return 1
fi
fi
info "ZFS: Using ${ZFS_DATASET} as root."
fi
ZFS_DATASET="${ZFS_DATASET:-${root#zfs:}}"
ZFS_POOL="${ZFS_DATASET%%/*}"
if import_pool "${ZFS_POOL}" ; then
# Load keys if we can or if we need to
if [ $(zpool list -H -o feature@encryption $(echo "${ZFS_POOL}" | awk -F\/ '{print $1}')) = 'active' ]; then
# if the root dataset has encryption enabled
ENCRYPTIONROOT="$(zfs get -H -o value encryptionroot "${ZFS_DATASET}")"
if ! [ "${ENCRYPTIONROOT}" = "-" ]; then
KEYSTATUS="$(zfs get -H -o value keystatus "${ENCRYPTIONROOT}")"
# if the key needs to be loaded
if [ "$KEYSTATUS" = "unavailable" ]; then
# decrypt them
ask_for_password \
--tries 5 \
--prompt "Encrypted ZFS password for ${ENCRYPTIONROOT}: " \
--cmd "zfs load-key '${ENCRYPTIONROOT}'"
fi
fi
fi
# Let us tell the initrd to run on shutdown.
# We have a shutdown hook to run
# because we imported the pool.
info "ZFS: Mounting dataset ${ZFS_DATASET}..."
if mount_dataset "${ZFS_DATASET}" ; then
ROOTFS_MOUNTED=yes
return 0
fi
fi
rootok=0
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