contrib/dracut/90zfs/mount-zfs.sh.in

   1 #!/bin/sh
   2 # shellcheck disable=SC2034,SC2154
   3
   4 . /lib/dracut-zfs-lib.sh
   5
   6 decode_root_args || return 0
   7
   8 GENERATOR_FILE=/run/systemd/generator/sysroot.mount
   9 GENERATOR_EXTENSION=/run/systemd/generator/sysroot.mount.d/zfs-enhancement.conf
  10
  11 if [ -e "$GENERATOR_FILE" ] && [ -e "$GENERATOR_EXTENSION" ]; then
  12         # We're under systemd and dracut-zfs-generator ran to completion.
  13         info "ZFS: Delegating root mount to sysroot.mount at al."
  14
  15         # We now prevent Dracut from running this thing again.
  16         rm -f "$hookdir"/mount/*zfs*
  17         return
  18 fi
  19
  20 info "ZFS: No sysroot.mount exists or zfs-generator did not extend it."
  21 info "ZFS: Mounting root with the traditional mount-zfs.sh instead."
  22
  23 # Delay until all required block devices are present.
  24 modprobe zfs 2>/dev/null
  25 udevadm settle
  26
  27 ZFS_DATASET=
  28 ZFS_POOL=
  29
  30 if [ "${root}" = "zfs:AUTO" ] ; then
  31         if ! ZFS_DATASET="$(find_bootfs)" ; then
  32                 # shellcheck disable=SC2086
  33                 zpool import -N -a ${ZPOOL_IMPORT_OPTS}
  34                 if ! ZFS_DATASET="$(find_bootfs)" ; then
  35                         warn "ZFS: No bootfs attribute found in importable pools."
  36                         zpool export -aF
  37
  38                         rootok=0
  39                         return 1
  40                 fi
  41         fi
  42         info "ZFS: Using ${ZFS_DATASET} as root."
  43 fi
  44
  45 ZFS_DATASET="${ZFS_DATASET:-${root}}"
  46 ZFS_POOL="${ZFS_DATASET%%/*}"
  47
  48 if import_pool "${ZFS_POOL}" ; then
  49         # Load keys if we can or if we need to
  50         if [ "$(zpool list -H -o feature@encryption "${ZFS_POOL}")" = 'active' ]; then
  51                 # if the root dataset has encryption enabled
  52                 ENCRYPTIONROOT="$(zfs get -H -o value encryptionroot "${ZFS_DATASET}")"
  53                 if ! [ "${ENCRYPTIONROOT}" = "-" ]; then
  54                         KEYSTATUS="$(zfs get -H -o value keystatus "${ENCRYPTIONROOT}")"
  55                         # if the key needs to be loaded
  56                         if [ "$KEYSTATUS" = "unavailable" ]; then
  57                                 # decrypt them
  58                                 ask_for_password \
  59                                         --tries 5 \
  60                                         --prompt "Encrypted ZFS password for ${ENCRYPTIONROOT}: " \
  61                                         --cmd "zfs load-key '${ENCRYPTIONROOT}'"
  62                         fi
  63                 fi
  64         fi
  65         # Let us tell the initrd to run on shutdown.
  66         # We have a shutdown hook to run
  67         # because we imported the pool.
  68         info "ZFS: Mounting dataset ${ZFS_DATASET}..."
  69         if mount_dataset "${ZFS_DATASET}" ; then
  70                 ROOTFS_MOUNTED=yes
  71                 return 0
  72         fi
  73 fi
  74
  75 rootok=0