#
# 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.
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
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# 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
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#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/zvol/zvol.cfg

#
# Create a simple zvol volume
#
# Where disk_device: is the name of the disk to be used
#       volume_size: is the size of the volume, e.g. 2G
#
function default_zvol_setup # disk_device volume_size
{
        typeset disk=$1
        typeset size=$2
	typeset savedumpdev
	typeset -i output

        create_pool $TESTPOOL "$disk"

        log_must zfs create -V $size $TESTPOOL/$TESTVOL
}

#
# Destroy the default zvol which was setup using
# default_zvol_setup().
#
function default_zvol_cleanup
{
        if datasetexists $TESTPOOL/$TESTVOL ; then
		log_must zfs destroy $TESTPOOL/$TESTVOL
	fi

        destroy_pool $TESTPOOL
}

function get_dumpdevice
{
	typeset ret=$(dumpadm | grep "Dump device:" | awk '{print $3}')
	echo $ret
}

function set_dumpsize
{
	typeset volume=$1

	if [[ -z $volume ]] ; then
		log_note "No volume specified."
		return 1
	fi

	log_must zfs set volsize=64m $volume

	output=$(dumpadm -d /dev/zvol/dsk/$volume 2>&1 | \
			tail -1 | awk '{print $3}')

	if [[ -n $output ]]; then
		(( output = output / 1024 / 1024 ))
		(( output = output + output / 5 ))
		log_must zfs set volsize=${output}m $volume
	fi
	return 0
}

function safe_dumpadm
{
	typeset device=$1

	if [[ -z $device || $device == "none" ]] ; then
		log_note "No dump device volume specified."
		return 1
	fi
	if [[ $device == "/dev/zvol/dsk/"* ]] ; then
		typeset volume=${device#/dev/zvol/dsk/}
		set_dumpsize $volume
		log_must dumpadm -d $device
	else
		log_must swapadd
		if ! is_swap_inuse $device ; then
			log_must swap -a $device
		fi
		log_must dumpadm -d swap
	fi
}

function is_zvol_dumpified
{
	typeset volume=$1

	if [[ -z $volume ]] ; then
		log_note "No volume specified."
		return 1
	fi

	zdb -dddd $volume 2 | grep "dumpsize" > /dev/null 2>&1
	return $?
}

function is_swap_inuse
{
	typeset device=$1

	if [[ -z $device ]] ; then
		log_note "No device specified."
		return 1
	fi

	swap -l | grep -w $device > /dev/null 2>&1
	return $?
}