#!/usr/local/bin/ksh93 -p
#
# CDDL HEADER START
#
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# Common Development and Distribution License (the "License").
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# $FreeBSD: releng/12.3/tests/sys/cddl/zfs/tests/cli_root/zfs_unmount/zfs_unmount_005_pos.ksh 329867 2018-02-23 16:31:00Z asomers $

#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# ident	"@(#)zfs_unmount_005_pos.ksh	1.2	07/01/09 SMI"
#

. $STF_SUITE/include/libtest.kshlib
. $STF_SUITE/tests/cli_root/zfs_unmount/zfs_unmount.kshlib

#################################################################################
#
# __stc_assertion_start
#
# ID: zfs_unmount_005_pos
#
# DESCRIPTION:
# If invoke "zfs unmount" with a specific filesystem|mountpoint
# that have been mounted, but it's currently in use,
# it will fail with a return code of 1
# and issue an error message.
# But unmount forcefully will bypass this restriction and
# unmount that given filesystem successfully.
#
# STRATEGY:
# 1. Make sure that the ZFS filesystem is mounted.
# 2. Change directory to that given mountpoint.
# 3. Unmount the file system using the various combinations.
# 	- Without force option. (FAILED)
# 	- With force option. (PASS)
# 4. Unmount the mountpoint using the various combinations.
# 	- Without force option. (FAILED)
# 	- With force option. (PASS)
# 5. Verify the above expected results of the filesystem|mountpoint.
#
# TESTABILITY: explicit
#
# TEST_AUTOMATION_LEVEL: automated
#
# CODING_STATUS: COMPLETED (2005-07-07)
#
# __stc_assertion_end
#
################################################################################

verify_runnable "both"


set -A cmd "umount" "unmount"
set -A options "" "-f"
set -A dev "$TESTPOOL/$TESTFS" "$TESTDIR"

function do_unmount_multiple #options #expect
{
	typeset opt=$1
	typeset -i expect=${2-0}

	typeset -i i=0
	typeset -i j=0

	while (( i <  ${#cmd[*]} )); do
		j=0
		while (( j < ${#dev[*]} )); do
			mounted ${dev[j]} || \
				log_must $ZFS $mountcmd ${dev[0]}

			cd $TESTDIR || \
				log_unresolved "Unable change dir to $TESTDIR"

			do_unmount "${cmd[i]}" "$opt" \
				"${dev[j]}" $expect

			cleanup

			((j = j + 1))
		done

		((i = i + 1))
	done
}

log_assert "Verify that '$ZFS $unmountcmd <filesystem|mountpoint>' " \
	"with a filesystem which mountpoint is currently in use " \
	"will fail with return code 1, and forcefully will succeeds as root."

log_onexit cleanup

cwd=$PWD

typeset -i i=0

while (( i <  ${#options[*]} )); do
	if [[ ${options[i]} == "-f" ]]; then
		do_unmount_multiple "${options[i]}"
	else
		do_unmount_multiple "${options[i]}" 1
	fi
        ((i = i + 1))
done

log_pass "'$ZFS $unmountcmd <filesystem|mountpoint>' " \
	"with a filesystem which mountpoint is currently in use " \
	"will fail with return code 1, and forcefully will succeeds as root."
