xref: /illumos-gate/usr/src/cmd/boot/scripts/update_grub.ksh (revision a38ddfee9c8c6b6c5a2947ff52fd2338362a4444)
1#!/bin/ksh -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or http://www.opensolaris.org/os/licensing.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
19#
20# CDDL HEADER END
21#
22
23#
24# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26#
27
28PATH="/usr/bin:/usr/sbin:${PATH}"; export PATH
29ALT_ROOT=
30
31while getopts R: OPT 2>/dev/null
32do
33	case $OPT in
34	R)	ALT_ROOT="$OPTARG"
35		;;
36	?)	echo "Usage: ${0##*/}: [-R \<root\>]"
37		;;
38	esac
39done
40
41ARCH=`uname -p`
42
43is_pcfs_boot=yes
44is_zfs_boot=no
45
46check_pcfs_boot()
47{
48	bootdev=`grep -v "^#" "$ALT_ROOT"/etc/vfstab | grep pcfs \
49	    | grep "[       ]/stubboot[      ]" | nawk '{print $1}'`
50	if [ X"$bootdev" = "X" ]; then
51		is_pcfs_boot=no
52	fi
53}
54
55check_zfs_boot()
56{
57	if [ -f "$ALT_ROOT"/etc/lu/GRUB_slice ]; then
58		dev=`grep '^PHYS_SLICE=' "$ALT_ROOT"/etc/lu/GRUB_slice |
59		    cut -d= -f2`
60		if [ "`fstyp $dev`" = "zfs" ]; then
61			is_zfs_boot=yes
62		fi
63	else
64		rootfstype=`df -n ${ALT_ROOT:-/} | awk '{print $3}'`
65		if [ "$rootfstype" = "zfs" ]; then
66			is_zfs_boot=yes
67		fi
68
69	fi
70}
71
72#
73# Detect SVM root and return the list of raw devices under the mirror
74#
75get_rootdev_list()
76{
77	if [ -f "$ALT_ROOT"/etc/lu/GRUB_slice ]; then
78		dev=`grep '^PHYS_SLICE' "$ALT_ROOT"/etc/lu/GRUB_slice |
79		    cut -d= -f2`
80		if [ "$is_zfs_boot" = "yes" ]; then
81			fstyp -a "$dev" | grep 'path: ' | grep -v phys_path: |
82			    cut -d"'" -f2 | sed 's+/dsk/+/rdsk/+'
83		else
84			echo "$dev"
85		fi
86		return
87	elif [ "$is_zfs_boot" = "yes" ]; then
88		rootpool=`df -k ${ALT_ROOT:-/} | tail +2 | cut -d/ -f1`
89		rootdevlist=`LC_ALL=C zpool iostat -v "$rootpool" | tail +5 |
90		    egrep -v "mirror|spare|replacing" |
91		    sed -n -e '/--/q' -e p | awk '{print $1}'`
92	else
93		metadev=`grep -v "^#" "$ALT_ROOT"/etc/vfstab | \
94		    grep "[	 ]/[ 	]" | nawk '{print $2}'`
95		if [[ $metadev = /dev/rdsk/* ]]; then
96			rootdevlist=`echo "$metadev" | sed -e "s#/dev/rdsk/##"`
97		elif [[ $metadev = /dev/md/rdsk/* ]]; then
98			metavol=`echo "$metadev" | sed -e "s#/dev/md/rdsk/##"`
99			rootdevlist=`metastat -p $metavol |\
100			    grep -v "^$metavol[	 ]" | nawk '{print $4}'`
101		fi
102	fi
103	for rootdev in $rootdevlist
104	do
105		echo /dev/rdsk/$rootdev
106	done
107}
108
109#
110# multiboot: install grub on the boot slice
111#
112install_grub()
113{
114	# Stage 2 blocks must remain untouched
115	STAGE1="$ALT_ROOT"/boot/grub/stage1
116	STAGE2="$ALT_ROOT"/boot/grub/stage2
117
118	if [ $is_pcfs_boot = yes ]; then
119		#
120		# Note: /stubboot/boot/grub/stage2 must stay untouched.
121		#
122		mkdir -p "$ALT_ROOT"/stubboot/boot/grub
123		cp "$ALT_ROOT"/boot/grub/menu.lst "$ALT_ROOT"/stubboot/boot/grub
124		bootdev=`grep -v "^#" "$ALT_ROOT"/etc/vfstab | grep pcfs | \
125			grep "[	 ]/stubboot[ 	]" | nawk '{print $1}'`
126		rpcfsdev=`echo "$bootdev" | sed -e "s/dev\/dsk/dev\/rdsk/"`
127		if [ X"$rpcfsdev" != X ]; then
128			print "Installing grub on $rpcfsdev"
129			"$ALT_ROOT"/sbin/installgrub $STAGE1 $STAGE2 $rpcfsdev
130		fi
131	fi
132
133	grubdevlist=`get_rootdev_list`
134	zfsarg=""
135	if [ "$is_zfs_boot" = "yes" ]; then
136		zfsarg="-Z"
137	fi
138
139	for rootdev in $grubdevlist
140	do
141		if [ X"$rpcfsdev" != X ]; then
142			echo "create GRUB menu in "$ALT_ROOT"/stubboot"
143			"$ALT_ROOT"/sbin/bootadm update-menu $zfsarg\
144			    -R "$ALT_ROOT"/stubboot -o $rootdev,"$ALT_ROOT"
145		else
146			echo "Creating GRUB menu in ${ALT_ROOT:-/}"
147			$ALT_ROOT/sbin/bootadm update-menu -R ${ALT_ROOT:-/} \
148			    $zfsarg -o $rootdev
149		fi
150		print "Installing grub on $rootdev"
151		"$ALT_ROOT"/sbin/installgrub $STAGE1 $STAGE2 $rootdev
152	done
153}
154
155if [ -f "$ALT_ROOT"/platform/i86pc/multiboot -a "$ARCH" = i386 ] ; then
156	check_pcfs_boot
157	check_zfs_boot
158	install_grub
159fi
160
161exit 0
162