1#!/bin/bash
2
3. /lib/dracut-lib.sh
4
5# Let the command line override our host id.
6spl_hostid=$(getarg spl_hostid=)
7if [ -n "${spl_hostid}" ] ; then
8	info "ZFS: Using hostid from command line: ${spl_hostid}"
9	zgenhostid -f "${spl_hostid}"
10elif [ -f "/etc/hostid" ] ; then
11	info "ZFS: Using hostid from /etc/hostid: $(hostid)"
12else
13	warn "ZFS: No hostid found on kernel command line or /etc/hostid."
14	warn "ZFS: Pools may not import correctly."
15fi
16
17wait_for_zfs=0
18case "${root}" in
19	""|zfs|zfs:)
20		# We'll take root unset, root=zfs, or root=zfs:
21		# No root set, so we want to read the bootfs attribute.  We
22		# can't do that until udev settles so we'll set dummy values
23		# and hope for the best later on.
24		root="zfs:AUTO"
25		rootok=1
26		wait_for_zfs=1
27
28		info "ZFS: Enabling autodetection of bootfs after udev settles."
29		;;
30
31	ZFS\=*|zfs:*|zfs:FILESYSTEM\=*|FILESYSTEM\=*)
32		# root is explicit ZFS root.  Parse it now.  We can handle
33		# a root=... param in any of the following formats:
34		# root=ZFS=rpool/ROOT
35		# root=zfs:rpool/ROOT
36		# root=zfs:FILESYSTEM=rpool/ROOT
37		# root=FILESYSTEM=rpool/ROOT
38		# root=ZFS=pool+with+space/ROOT+WITH+SPACE (translates to root=ZFS=pool with space/ROOT WITH SPACE)
39
40		# Strip down to just the pool/fs
41		root="${root#zfs:}"
42		root="${root#FILESYSTEM=}"
43		root="zfs:${root#ZFS=}"
44		# switch + with spaces because kernel cmdline does not allow us to quote parameters
45		root=$(printf '%s\n' "$root" | sed "s/+/ /g")
46		rootok=1
47		wait_for_zfs=1
48
49		info "ZFS: Set ${root} as bootfs."
50		;;
51esac
52
53# Make sure Dracut is happy that we have a root and will wait for ZFS
54# modules to settle before mounting.
55if [ ${wait_for_zfs} -eq 1 ]; then
56	ln -s /dev/null /dev/root 2>/dev/null
57	initqueuedir="${hookdir}/initqueue/finished"
58	test -d "${initqueuedir}" || {
59		initqueuedir="${hookdir}/initqueue-finished"
60	}
61	echo '[ -e /dev/zfs ]' > "${initqueuedir}/zfs.sh"
62fi
63