boot/scripts/update_grub.ksh

	update_grub.ksh revision ae115bc77f6fcde83175c75b4206dc2e50747966
#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

# ident "%Z%%M% %I% %E% SMI"

PATH="/usr/bin:/usr/sbin:${PATH}"; export PATH
ALT_ROOT=

while getopts R: OPT 2>/dev/null
do
    case $OPT in
    R)  ALT_ROOT="$OPTARG"
        ;;
    ?)  echo "Usage: ${0##*/}: [-R \<root\>]"
        ;;
    esac
done

ARCH=`uname -p`

is_pcfs_boot=yes

check_pcfs_boot()
{
    bootdev=`grep -v "^#" "$ALT_ROOT"/etc/vfstab | grep pcfs \
        | grep "[       ]/stubboot[      ]" | nawk '{print $1}'`
    if [ X"$bootdev" = "X" ]; then
        is_pcfs_boot=no
    fi
}

#
# Detect SVM root and return the list of raw devices under the mirror
#
get_rootdev_list()
{
    if [ -f "$ALT_ROOT"/etc/lu/GRUB_slice ]; then
        grep '^PHYS_SLICE' "$ALT_ROOT"/etc/lu/GRUB_slice | cut -d= -f2
    else
        metadev=`grep -v "^#" "$ALT_ROOT"/etc/vfstab | \
            grep "[  ]/[    ]" | nawk '{print $2}'`
        if [[ $metadev = /dev/rdsk/* ]]; then
            rootdevlist=`echo "$metadev" | sed -e "s#/dev/rdsk/##"`
        elif [[ $metadev = /dev/md/rdsk/* ]]; then
            metavol=`echo "$metadev" | sed -e "s#/dev/md/rdsk/##"`
            rootdevlist=`metastat -p $metavol |\
                grep -v "^$metavol[  ]" | nawk '{print $4}'`
        fi
        for rootdev in $rootdevlist
        do
            echo /dev/rdsk/$rootdev
        done
    fi
}

#
# multiboot: install grub on the boot slice
#
install_grub()
{
    # Stage 2 blocks must remain untouched
    STAGE1="$ALT_ROOT"/boot/grub/stage1
    STAGE2="$ALT_ROOT"/boot/grub/stage2

    if [ $is_pcfs_boot = yes ]; then
        #
        # Note: /stubboot/boot/grub/stage2 must stay untouched.
        #
        mkdir -p "$ALT_ROOT"/stubboot/boot/grub
        cp "$ALT_ROOT"/boot/grub/menu.lst "$ALT_ROOT"/stubboot/boot/grub
        bootdev=`grep -v "^#" "$ALT_ROOT"/etc/vfstab | grep pcfs | \
            grep "[  ]/stubboot[    ]" | nawk '{print $1}'`
        rpcfsdev=`echo "$bootdev" | sed -e "s/dev\/dsk/dev\/rdsk/"`
        if [ X"$rpcfsdev" != X ]; then
            print "Installing grub on $rpcfsdev"
            "$ALT_ROOT"/sbin/installgrub $STAGE1 $STAGE2 $rpcfsdev
        fi
    fi

    get_rootdev_list | while read rootdev
    do
        if [ X"$rpcfsdev" != X ]; then
            echo "create GRUB menu in "$ALT_ROOT"/stubboot"
            "$ALT_ROOT"/sbin/bootadm update-menu \
                -R "$ALT_ROOT"/stubboot -o $rootdev,"$ALT_ROOT"
        else
            echo "Creating GRUB menu in ${ALT_ROOT:-/}"
            $ALT_ROOT/sbin/bootadm update-menu -R ${ALT_ROOT:-/} \
                -o $rootdev
        fi
        print "Installing grub on $rootdev"
        "$ALT_ROOT"/sbin/installgrub $STAGE1 $STAGE2 $rootdev
    done
}

if [ -f "$ALT_ROOT"/platform/i86pc/multiboot -a "$ARCH" = i386 ] ; then
    check_pcfs_boot
    install_grub
fi

exit 0