Shellcheck cleanup for initrd scripts
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Co-authored-by: Kash Pande <kash@tripleback.net> Co-authored-by: Matthew Thode <mthode@mthode.org> Signed-off-by: Kash Pande <kash@tripleback.net> Signed-off-by: Matthew Thode <mthode@mthode.org> Closes #7214
This commit is contained in:
Kash Pande
Brian Behlendorf
parent
7280d58197
commit
41532e5a29
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@ -3,9 +3,9 @@
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. /lib/dracut-zfs-lib.sh
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_do_zpool_export() {
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local ret=0
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local errs=""
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local final="${1}"
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ret=0
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errs=""
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final="${1}"
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info "ZFS: Exporting ZFS storage pools..."
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errs=$(export_all -F 2>&1)
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@ -13,7 +13,7 @@ esac
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GENERATOR_FILE=/run/systemd/generator/sysroot.mount
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GENERATOR_EXTENSION=/run/systemd/generator/sysroot.mount.d/zfs-enhancement.conf
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if [ -e "$GENERATOR_FILE" -a -e "$GENERATOR_EXTENSION" ] ; then
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if [ -e "$GENERATOR_FILE" ] && [ -e "$GENERATOR_EXTENSION" ] ; then
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# If the ZFS sysroot.mount flag exists, the initial RAM disk configured
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# it to mount ZFS on root. In that case, we bail early. This flag
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# file gets created by the zfs-generator program upon successful run.
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@ -57,9 +57,9 @@ ZFS_POOL="${ZFS_DATASET%%/*}"
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if import_pool "${ZFS_POOL}" ; then
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# Load keys if we can or if we need to
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if [ $(zpool list -H -o feature@encryption $(echo "${ZFS_POOL}" | awk -F\/ '{print $1}')) == 'active' ]; then
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if [ $(zpool list -H -o feature@encryption $(echo "${ZFS_POOL}" | awk -F\/ '{print $1}')) = 'active' ]; then
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# if the root dataset has encryption enabled
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ENCRYPTIONROOT=$(zfs get -H -o value encryptionroot ${ZFS_DATASET})
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ENCRYPTIONROOT="$(zfs get -H -o value encryptionroot "${ZFS_DATASET}")"
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if ! [ "${ENCRYPTIONROOT}" = "-" ]; then
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# decrypt them
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ask_for_password \
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@ -3,16 +3,16 @@
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. /lib/dracut-lib.sh
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# Let the command line override our host id.
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spl_hostid=`getarg spl_hostid=`
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spl_hostid=$(getarg spl_hostid=)
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if [ -n "${spl_hostid}" ] ; then
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info "ZFS: Using hostid from command line: ${spl_hostid}"
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AA=`echo ${spl_hostid} | cut -b 1,2`
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BB=`echo ${spl_hostid} | cut -b 3,4`
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CC=`echo ${spl_hostid} | cut -b 5,6`
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DD=`echo ${spl_hostid} | cut -b 7,8`
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printf "\x${DD}\x${CC}\x${BB}\x${AA}" >/etc/hostid
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AA=$(echo "${spl_hostid}" | cut -b 1,2)
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BB=$(echo "${spl_hostid}" | cut -b 3,4)
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CC=$(echo "${spl_hostid}" | cut -b 5,6)
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DD=$(echo "${spl_hostid}" | cut -b 7,8)
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printf "\\x%s\\x%s\\x%s\\x%s" "${DD}" "${CC}" "${BB}" "${AA}" >/etc/hostid
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elif [ -f "/etc/hostid" ] ; then
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info "ZFS: Using hostid from /etc/hostid: `hostid`"
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info "ZFS: Using hostid from /etc/hostid: $(hostid)"
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else
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warn "ZFS: No hostid found on kernel command line or /etc/hostid."
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warn "ZFS: Pools may not import correctly."
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@ -5,16 +5,16 @@ command -v getargbool >/dev/null || {
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# Compatibility with older Dracut versions.
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# With apologies to the Dracut developers.
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getargbool() {
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local _b
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unset _b
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local _default
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if ! [ -z "$_b" ]; then
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unset _b
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fi
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_default="$1"; shift
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_b=$(getarg "$@")
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[ $? -ne 0 -a -z "$_b" ] && _b="$_default"
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[ $? -ne 0 ] && [ -z "$_b" ] && _b="$_default"
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if [ -n "$_b" ]; then
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[ $_b = "0" ] && return 1
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[ $_b = "no" ] && return 1
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[ $_b = "off" ] && return 1
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[ "$_b" = "0" ] && return 1
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[ "$_b" = "no" ] && return 1
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[ "$_b" = "off" ] && return 1
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fi
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return 0
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}
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@ -26,82 +26,82 @@ NEWLINE="
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ZPOOL_IMPORT_OPTS=""
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if getargbool 0 zfs_force -y zfs.force -y zfsforce ; then
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warn "ZFS: Will force-import pools if necessary."
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ZPOOL_IMPORT_OPTS="${ZPOOL_IMPORT_OPTS} -f"
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warn "ZFS: Will force-import pools if necessary."
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ZPOOL_IMPORT_OPTS="${ZPOOL_IMPORT_OPTS} -f"
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fi
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# find_bootfs
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# returns the first dataset with the bootfs attribute.
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find_bootfs() {
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IFS="${NEWLINE}"
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for dataset in $(zpool list -H -o bootfs); do
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case "${dataset}" in
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"" | "-")
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continue
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;;
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"no pools available")
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IFS="${OLDIFS}"
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return 1
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;;
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*)
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IFS="${OLDIFS}"
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echo "${dataset}"
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return 0
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;;
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esac
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done
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IFS="${NEWLINE}"
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for dataset in $(zpool list -H -o bootfs); do
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case "${dataset}" in
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"" | "-")
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continue
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;;
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"no pools available")
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IFS="${OLDIFS}"
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return 1
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;;
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*)
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IFS="${OLDIFS}"
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echo "${dataset}"
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return 0
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;;
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esac
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done
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IFS="${OLDIFS}"
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return 1
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IFS="${OLDIFS}"
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return 1
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}
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# import_pool POOL
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# imports the given zfs pool if it isn't imported already.
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import_pool() {
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local pool="${1}"
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pool="${1}"
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if ! zpool list -H "${pool}" 2>&1 > /dev/null ; then
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info "ZFS: Importing pool ${pool}..."
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if ! zpool import -N ${ZPOOL_IMPORT_OPTS} "${pool}" ; then
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warn "ZFS: Unable to import pool ${pool}"
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return 1
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fi
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fi
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if ! zpool list -H "${pool}" > /dev/null 2>&1; then
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info "ZFS: Importing pool ${pool}..."
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if ! zpool import -N ${ZPOOL_IMPORT_OPTS} "${pool}" ; then
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warn "ZFS: Unable to import pool ${pool}"
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return 1
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fi
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fi
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return 0
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return 0
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}
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# mount_dataset DATASET
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# mounts the given zfs dataset.
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mount_dataset() {
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local dataset="${1}"
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local mountpoint="$(zfs get -H -o value mountpoint "${dataset}")"
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dataset="${1}"
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mountpoint="$(zfs get -H -o value mountpoint "${dataset}")"
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# We need zfsutil for non-legacy mounts and not for legacy mounts.
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if [ "${mountpoint}" = "legacy" ] ; then
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mount -t zfs "${dataset}" "${NEWROOT}"
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else
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mount -o zfsutil -t zfs "${dataset}" "${NEWROOT}"
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fi
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# We need zfsutil for non-legacy mounts and not for legacy mounts.
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if [ "${mountpoint}" = "legacy" ] ; then
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mount -t zfs "${dataset}" "${NEWROOT}"
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else
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mount -o zfsutil -t zfs "${dataset}" "${NEWROOT}"
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fi
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return $?
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return $?
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}
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# export_all OPTS
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# exports all imported zfs pools.
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export_all() {
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local opts="${@}"
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local ret=0
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opts="${@}"
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ret=0
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IFS="${NEWLINE}"
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for pool in `zpool list -H -o name` ; do
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if zpool list -H "${pool}" 2>&1 > /dev/null ; then
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zpool export "${pool}" ${opts} || ret=$?
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fi
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done
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IFS="${OLDIFS}"
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IFS="${NEWLINE}"
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for pool in $(zpool list -H -o name) ; do
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if zpool list -H "${pool}" > /dev/null 2>&1; then
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zpool export "${pool}" ${opts} || ret=$?
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fi
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done
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IFS="${OLDIFS}"
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return ${ret}
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return ${ret}
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}
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# ask_for_password
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@ -124,12 +124,9 @@ export_all() {
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# Turn off input echo before tty command is executed and turn on after.
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# It's useful when password is read from stdin.
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ask_for_password() {
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local cmd; local prompt; local tries=3
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local ply_cmd; local ply_prompt; local ply_tries=3
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local tty_cmd; local tty_prompt; local tty_tries=3
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local ret
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while [ $# -gt 0 ]; do
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ply_tries=3
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tty_tries=3
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while [ "$#" -gt 0 ]; do
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case "$1" in
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--cmd) ply_cmd="$2"; tty_cmd="$2"; shift;;
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--ply-cmd) ply_cmd="$2"; shift;;
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@ -147,9 +144,9 @@ ask_for_password() {
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{ flock -s 9;
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# Prompt for password with plymouth, if installed and running.
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if type plymouth >/dev/null 2>&1 && plymouth --ping 2>/dev/null; then
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if whereis plymouth >/dev/null 2>&1 && plymouth --ping 2>/dev/null; then
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plymouth ask-for-password \
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--prompt "$ply_prompt" --number-of-tries=$ply_tries \
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--prompt "$ply_prompt" --number-of-tries="$ply_tries" \
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--command="$ply_cmd"
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ret=$?
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else
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@ -158,17 +155,17 @@ ask_for_password() {
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stty -echo
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fi
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local i=1
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while [ $i -le $tty_tries ]; do
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i=1
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while [ "$i" -le "$tty_tries" ]; do
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[ -n "$tty_prompt" ] && \
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printf "$tty_prompt [$i/$tty_tries]:" >&2
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printf "%s [%i/%i]:" "$tty_prompt" "$i" "$tty_tries" >&2
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eval "$tty_cmd" && ret=0 && break
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ret=$?
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i=$(($i+1))
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i=$((i+1))
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[ -n "$tty_prompt" ] && printf '\n' >&2
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done
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[ "$tty_echo_off" = yes ] && stty $stty_orig
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unset i
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[ "$tty_echo_off" = yes ] && stty "$stty_orig"
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fi
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} 9>/.console_lock
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@ -1,47 +1,47 @@
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#!/bin/bash
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#!/bin/sh
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# only run this on systemd systems, we handle the decrypt in mount-zfs.sh in the mount hook otherwise
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[[ -e /bin/systemctl ]] || return 0
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[ -e /bin/systemctl ] || return 0
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# This script only gets executed on systemd systems, see mount-zfs.sh for non-systemd systems
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# import the libs now that we know the pool imported
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[ -f /lib/dracut-lib.sh ] && dracutlib=/lib/dracut-lib.sh
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[ -f /usr/lib/dracut/modules.d/99base/dracut-lib.sh ] && dracutlib=/usr/lib/dracut/modules.d/99base/dracut-lib.sh
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# shellcheck source=./lib-zfs.sh.in
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. "$dracutlib"
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# load the kernel command line vars
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[ -z "$root" ] && root=$(getarg root=)
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[ -z "$root" ] && root="$(getarg root=)"
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# If root is not ZFS= or zfs: or rootfstype is not zfs then we are not supposed to handle it.
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[ "${root##zfs:}" = "${root}" -a "${root##ZFS=}" = "${root}" -a "$rootfstype" != "zfs" ] && exit 0
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[ "${root##zfs:}" = "${root}" ] && [ "${root##ZFS=}" = "${root}" ] && [ "$rootfstype" != "zfs" ] && exit 0
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# There is a race between the zpool import and the pre-mount hooks, so we wait for a pool to be imported
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while true; do
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zpool list -H | grep -q -v '^$' && break
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[[ $(systemctl is-failed zfs-import-cache.service) == 'failed' ]] && exit 1
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[[ $(systemctl is-failed zfs-import-scan.service) == 'failed' ]] && exit 1
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[ "$(systemctl is-failed zfs-import-cache.service)" = 'failed' ] && exit 1
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[ "$(systemctl is-failed zfs-import-scan.service)" = 'failed' ] && exit 1
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sleep 0.1s
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done
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# run this after import as zfs-import-cache/scan service is confirmed good
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if [[ "${root}" = "zfs:AUTO" ]] ; then
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root=$(zpool list -H -o bootfs | awk '$1 != "-" {print; exit}')
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if [ "${root}" = "zfs:AUTO" ] ; then
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root="$(zpool list -H -o bootfs | awk '$1 != "-" {print; exit}')"
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else
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root="${root##zfs:}"
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root="${root##ZFS=}"
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fi
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# if pool encryption is active and the zfs command understands '-o encryption'
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if [[ $(zpool list -H -o feature@encryption $(echo "${root}" | awk -F\/ '{print $1}')) == 'active' ]]; then
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if [ "$(zpool list -H -o feature@encryption $(echo "${root}" | awk -F\/ '{print $1}'))" = 'active' ]; then
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# if the root dataset has encryption enabled
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ENCRYPTIONROOT=$(zfs get -H -o value encryptionroot ${ZFS_DATASET})
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ENCRYPTIONROOT=$(zfs get -H -o value encryptionroot "${root}")
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if ! [ "${ENCRYPTIONROOT}" = "-" ]; then
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# decrypt them
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TRY_COUNT=5
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while [ $TRY_COUNT != 0 ]; do
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zfs load-key "${ENCRYPTIONROOT}" <<< $(systemd-ask-password "Encrypted ZFS password for ${root}: ")
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[[ $? == 0 ]] && break
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((TRY_COUNT-=1))
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while [ $TRY_COUNT -gt 0 ]; do
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systemd-ask-password "Encrypted ZFS password for ${root}" --no-tty | zfs load-key "${ENCRYPTIONROOT}" && break
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TRY_COUNT=$((TRY_COUNT - 1))
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done
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fi
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fi
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