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16692e6ba0
Despite that dracut has a hard dependency on bash,
its modules doesn't, dracut only has a hard dependency on bash for
module-setup (on a fully usable machine). Inside initramfs, dracut
allows users choose from a list of handful other shells, e.g. bash,
busybox, dash, mkfsh.
In fact, my local machine's initramfs is being built with dash,
and it's functional for a very long time.
Before 64025fa3a (Silence 'make checkbashisms', 2020-08-20), we also
allows our users to have that right, too.
Let's fix the problem 'make checkbashisms' reported and allows our users
to have that right, again.
For 'plymouth' case, let's simply run the command inside the if instead
of checking for the existence of command before running it, because the
status is also failture if plymouth is unavailable.
While we're at it, let's remove an unnecessary fork for grep in
zfs-generator.sh.in and its following complicated 'if elif fi' with
a simple 'case ... esac'.
To support this change, also exclude 90zfs from "make checkbashisms"
because the current CI infrastructure ships an old version of
"checkbashisms", which complains about "command -v", while the current
latest "checkbashisms" thinks it's fine. In the near future, we can
revert that change to "Makefile.am" when CI infrastructure is updated.
Reviewed-by: Gabriel A. Devenyi <gdevenyi@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Closes #11244
87 lines
2.5 KiB
Bash
Executable File
87 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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. /lib/dracut-zfs-lib.sh
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ZFS_DATASET=""
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ZFS_POOL=""
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case "${root}" in
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zfs:*) ;;
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*) return ;;
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esac
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GENERATOR_FILE=/run/systemd/generator/sysroot.mount
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GENERATOR_EXTENSION=/run/systemd/generator/sysroot.mount.d/zfs-enhancement.conf
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if [ -e "$GENERATOR_FILE" ] && [ -e "$GENERATOR_EXTENSION" ] ; then
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# If the ZFS sysroot.mount flag exists, the initial RAM disk configured
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# it to mount ZFS on root. In that case, we bail early. This flag
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# file gets created by the zfs-generator program upon successful run.
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info "ZFS: There is a sysroot.mount and zfs-generator has extended it."
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info "ZFS: Delegating root mount to sysroot.mount."
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# Let us tell the initrd to run on shutdown.
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# We have a shutdown hook to run
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# because we imported the pool.
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# We now prevent Dracut from running this thing again.
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for zfsmounthook in "$hookdir"/mount/*zfs* ; do
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if [ -f "$zfsmounthook" ] ; then
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rm -f "$zfsmounthook"
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fi
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done
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return
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fi
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info "ZFS: No sysroot.mount exists or zfs-generator did not extend it."
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info "ZFS: Mounting root with the traditional mount-zfs.sh instead."
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# Delay until all required block devices are present.
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modprobe zfs 2>/dev/null
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udevadm settle
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if [ "${root}" = "zfs:AUTO" ] ; then
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ZFS_DATASET="$(find_bootfs)"
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if [ $? -ne 0 ] ; then
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zpool import -N -a ${ZPOOL_IMPORT_OPTS}
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ZFS_DATASET="$(find_bootfs)"
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if [ $? -ne 0 ] ; then
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warn "ZFS: No bootfs attribute found in importable pools."
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export_all -F
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rootok=0
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return 1
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fi
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fi
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info "ZFS: Using ${ZFS_DATASET} as root."
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fi
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ZFS_DATASET="${ZFS_DATASET:-${root#zfs:}}"
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ZFS_POOL="${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 $1}')")" = 'active' ]; then
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# if the root dataset has encryption enabled
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ENCRYPTIONROOT="$(zfs get -H -o value encryptionroot "${ZFS_DATASET}")"
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if ! [ "${ENCRYPTIONROOT}" = "-" ]; then
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KEYSTATUS="$(zfs get -H -o value keystatus "${ENCRYPTIONROOT}")"
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# if the key needs to be loaded
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if [ "$KEYSTATUS" = "unavailable" ]; then
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# decrypt them
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ask_for_password \
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--tries 5 \
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--prompt "Encrypted ZFS password for ${ENCRYPTIONROOT}: " \
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--cmd "zfs load-key '${ENCRYPTIONROOT}'"
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fi
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fi
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fi
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# Let us tell the initrd to run on shutdown.
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# We have a shutdown hook to run
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# because we imported the pool.
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info "ZFS: Mounting dataset ${ZFS_DATASET}..."
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if mount_dataset "${ZFS_DATASET}" ; then
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ROOTFS_MOUNTED=yes
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return 0
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fi
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fi
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rootok=0
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