Cross Reference: /illumos-gate/usr/src/cmd/power/svc-power

#!/sbin/sh
#
# 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
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# CDDL HEADER END
#
#
# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident  "%Z%%M% %I% %E% SMI"
#
# If the /etc/power.conf file does not have a "statefile" entry
# to specify the pathname of the cpr statefile, build one and
# add the line.  We choose the largest of the standard Sun partitions.

init_statefile_entry() {
    [ ! -f /etc/power.conf -o ! -w /etc/power.conf ] && return

    # Whitespace regular expression below is [<TAB><SPACE>]

    pattern="^[     ]*statefile[     ][  ]*/"
    [ `/usr/bin/grep -c "$pattern" /etc/power.conf` -ge 1 ] && return

    avail=0         # Free blocks in current filesystem
    max_avail=0     # Most available free blocks encountered so far
    statefile=.CPR      # Default cpr statefile name

    # Remove old statefile (if any) from root
    [ -f /$statefile ] && /usr/bin/rm -f /$statefile

    /usr/bin/df -k -F ufs |
    (
        read line   # Skip past the header line of the df output

        while read device kbytes used avail capacity filesys; do
            case $filesys in
            /|/usr|/var|/export/home)
                if [ $avail -gt $max_avail ]; then
                    max_avail=$avail
                    winner=$filesys
                fi
                ;;
            esac
        done

        if [ $max_avail -gt 0 ]; then
            echo "statefile     ${winner}/${statefile}" \
                >>/etc/power.conf
        fi

        return
    )
    if [ $max_avail -eq 0 ]; then
        if [ X`df -n / | awk '{print $3}'` != "Xzfs" ] ; then
            return
        fi
        rootpool=`zfs mount | grep ' \/$' | awk '{print $1 }' |\
            sed 's/\/.*$//'`
        if [ X$rootpool = "X" ] || \
            [ ! -L /dev/zvol/dsk/$rootpool/dump ]; then
            return
        fi
        echo "statefile /dev/zvol/dsk/$rootpool/dump" \
            >> /etc/power.conf
    fi
}

case "$1" in
'start')
    /usr/sbin/uadmin 3 2 2>/dev/null
    if [ $? -eq 0 ]; then
        init_statefile_entry
    fi

    if [ -x /usr/sbin/pmconfig -a -r /etc/power.conf ]; then
        /usr/sbin/pmconfig >/dev/console 2>&1
    fi
    ;;

'stop')
    if [ -x /usr/sbin/pmconfig ]; then
        /usr/sbin/pmconfig -r >/dev/null 2>/dev/null
    fi
    ;;

*)
    echo "Usage: $0 { start | stop }"
    exit 1
    ;;
esac
exit 0