#!/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]
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# CDDL HEADER END
#

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

#
# Copyright (c) 2012 by Delphix. All rights reserved.
#

. $STF_SUITE/include/libtest.shlib

#
# DESCRIPTION:
#	Verify debugging features of zpool such as ABORT and freeze/unfreeze
#	should run successfully.
#
# STRATEGY:
# 1. Create an array containg each zpool options.
# 2. For each element, execute the zpool command.
# 3. Verify it run successfully.
#

verify_runnable "both"

function cleanup
{
	unset ZFS_ABORT

	if [[ -n "$LINUX" && -n "$def_cor_pat" ]]; then
		echo "$def_cor_pat" > /proc/sys/kernel/core_pattern
		echo "$def_cor_suid" > /proc/sys/fs/suid_dumpable
		ulimit -c $ulimit
	fi
	$SLEEP 20
}

log_assert "Debugging features of zpool should succeed."
log_onexit cleanup

log_must $ZPOOL -? > /dev/null 2>&1

if is_global_zone ; then
	log_must $ZPOOL freeze $TESTPOOL
else
	log_mustnot $ZPOOL freeze $TESTPOOL
	log_mustnot $ZPOOL freeze ${TESTPOOL%%/*}
fi

log_mustnot $ZPOOL freeze fakepool

# Remove corefile possibly left by previous failing run of this test.
if [[ -z "$OSX" ]]; then
    corepath=$TEST_BASE_DIR/cores
    if [[ -d $corepath ]]; then
        $RM -rf $corepath
    fi
    $MKDIR -p $corepath
fi

if [[ -n "$LINUX" && -f "/proc/sys/kernel/core_pattern" ]]; then
	# NOTE: This file is only provided if the kernel was built
	#       with the CONFIG_ELF_CORE configuration option
	typeset def_cor_pat=$(cat /proc/sys/kernel/core_pattern)
	typeset def_cor_suid=$(cat /proc/sys/fs/suid_dumpable)
	typeset ulimit=$(ulimit -c)
	echo "${corepath}/core.%e" > /proc/sys/kernel/core_pattern
	ulimit -c unlimited
elif [[ -n "$OSX" ]]; then
    log_note "no core path control on OSX"
else
    log_must $COREADM -p ${corepath}/core.%f
fi


ZFS_ABORT=1; export ZFS_ABORT

if [[ -n "$OSX" ]]; then
    typeset -i num_cores_before=`ls -l ${corepath} | grep $ZPOOL | wc -l`
    $ZPOOL > /dev/null 2>&1
    typeset -i num_cores_after=`ls -l ${corepath} | grep $ZPOOL | wc -l`

    if [[ num_cores_before == num_cores_after ]]; then
        log_fail "$ZFS $subcmd cannot generate core file with " \
        "ZFS_ABORT set."
    fi
else
    $ZPOOL > /dev/null 2>&1

    if [[ -f ${corepath}/core.zpool ]]; then
        log_must rm -f ${corepath}/core.zpool
        log_pass "Debugging features of zpool succeed."
    else
        log_fail "$ZPOOL did not dump core by request."
    fi
fi
