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7da8f8d81b
'zfs load-key -a' will only be called if needed. If a dataset not needed for boot does not have its key loaded (home directories for example) boot can still continue. zfs:AUTO was not working via dracut, so we still need the generator script to do its thing. Reviewed-by: Richard Yao <ryao@gentoo.org> Reviewed-by: Manuel Amador (Rudd-O) <rudd-o@rudd-o.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: Matthew Thode <mthode@mthode.org> Closes #6982 Closes #7004
53 lines
2.1 KiB
Bash
Executable File
53 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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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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. "$dracutlib"
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# load the kernel command line vars
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[ -z "$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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# 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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[[ $(systemctl is-failed zfs-import-scan.service) == 'failed' ]] && exit 1
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sleep 0.1s
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done
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# run this after import as zfs-import-cache/scan service is confirmed good
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if [[ "${root}" = "zfs:AUTO" ]] ; then
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root=$(zpool list -H -o bootfs | awk '$1 != "-" {print; exit}')
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else
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root="${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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# check if root dataset has encryption enabled
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if $(zfs list -H -o encryption "${root}" | grep -q -v off); then
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# figure out where the root dataset has its key, the keylocation should not be none
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while true; do
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if [[ $(zfs list -H -o keylocation "${root}") == 'none' ]]; then
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root=$(echo -n "${root}" | awk 'BEGIN{FS=OFS="/"}{NF--; print}')
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[[ "${root}" == '' ]] && exit 1
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else
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break
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fi
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done
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# decrypt them
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TRY_COUNT=5
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while [ $TRY_COUNT != 0 ]; do
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zfs load-key "$root" <<< $(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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done
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fi
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fi
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