xref: /freebsd/sys/contrib/openzfs/tests/zfs-tests/include/libtest.shlib (revision cb14a3fe5122c879eae1fb480ed7ce82a699ddb6)
1#
2# CDDL HEADER START
3#
4# The contents of this file are subject to the terms of the
5# Common Development and Distribution License (the "License").
6# You may not use this file except in compliance with the License.
7#
8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9# or https://opensource.org/licenses/CDDL-1.0.
10# See the License for the specific language governing permissions
11# and limitations under the License.
12#
13# When distributing Covered Code, include this CDDL HEADER in each
14# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15# If applicable, add the following below this CDDL HEADER, with the
16# fields enclosed by brackets "[]" replaced with your own identifying
17# information: Portions Copyright [yyyy] [name of copyright owner]
18#
19# CDDL HEADER END
20#
21
22#
23# Copyright (c) 2009, Sun Microsystems Inc. All rights reserved.
24# Copyright (c) 2012, 2020, Delphix. All rights reserved.
25# Copyright (c) 2017, Tim Chase. All rights reserved.
26# Copyright (c) 2017, Nexenta Systems Inc. All rights reserved.
27# Copyright (c) 2017, Lawrence Livermore National Security LLC.
28# Copyright (c) 2017, Datto Inc. All rights reserved.
29# Copyright (c) 2017, Open-E Inc. All rights reserved.
30# Copyright (c) 2021, The FreeBSD Foundation.
31# Use is subject to license terms.
32#
33
34. ${STF_SUITE}/include/tunables.cfg
35
36. ${STF_TOOLS}/include/logapi.shlib
37. ${STF_SUITE}/include/math.shlib
38. ${STF_SUITE}/include/blkdev.shlib
39
40# On AlmaLinux 9 we will see $PWD = '.' instead of the full path.  This causes
41# some tests to fail.  Fix it up here.
42if [ "$PWD" = "." ] ; then
43	PWD="$(readlink -f $PWD)"
44fi
45
46#
47# Apply constrained path when available.  This is required since the
48# PATH may have been modified by sudo's secure_path behavior.
49#
50if [ -n "$STF_PATH" ]; then
51	export PATH="$STF_PATH"
52fi
53
54#
55# Generic dot version comparison function
56#
57# Returns success when version $1 is greater than or equal to $2.
58#
59function compare_version_gte
60{
61	[ "$(printf "$1\n$2" | sort -V | tail -n1)" = "$1" ]
62}
63
64# Helper function used by linux_version() and freebsd_version()
65function kernel_version
66{
67	typeset ver="$1"
68
69	[ -z "$ver" ] && ver=$(uname -r | grep -Eo "^[0-9]+\.[0-9]+\.[0-9]+")
70
71	typeset version major minor _
72	IFS='.' read -r version major minor _ <<<"$ver"
73
74	[ -z "$version" ] && version=0
75	[ -z "$major" ] && major=0
76	[ -z "$minor" ] && minor=0
77
78	echo $((version * 100000 + major * 1000 + minor))
79}
80
81# Linux kernel version comparison function
82#
83# $1 Linux version ("4.10", "2.6.32") or blank for installed Linux version
84#
85# Used for comparison: if [ $(linux_version) -ge $(linux_version "2.6.32") ]
86function linux_version {
87	kernel_version "$1"
88}
89
90# FreeBSD version comparison function
91#
92# $1 FreeBSD version ("13.2", "14.0") or blank for installed FreeBSD version
93#
94# Used for comparison: if [ $(freebsd_version) -ge $(freebsd_version "13.2") ]
95function freebsd_version {
96	kernel_version "$1"
97}
98
99# Determine if this is a Linux test system
100#
101# Return 0 if platform Linux, 1 if otherwise
102
103function is_linux
104{
105	[ "$UNAME" = "Linux" ]
106}
107
108# Determine if this is an illumos test system
109#
110# Return 0 if platform illumos, 1 if otherwise
111function is_illumos
112{
113	[ "$UNAME" = "illumos" ]
114}
115
116# Determine if this is a FreeBSD test system
117#
118# Return 0 if platform FreeBSD, 1 if otherwise
119
120function is_freebsd
121{
122	[ "$UNAME" = "FreeBSD" ]
123}
124
125# Determine if this is a 32-bit system
126#
127# Return 0 if platform is 32-bit, 1 if otherwise
128
129function is_32bit
130{
131	[ $(getconf LONG_BIT) = "32" ]
132}
133
134# Determine if kmemleak is enabled
135#
136# Return 0 if kmemleak is enabled, 1 if otherwise
137
138function is_kmemleak
139{
140	is_linux && [ -e /sys/kernel/debug/kmemleak ]
141}
142
143# Determine whether a dataset is mounted
144#
145# $1 dataset name
146# $2 filesystem type; optional - defaulted to zfs
147#
148# Return 0 if dataset is mounted; 1 if unmounted; 2 on error
149
150function ismounted
151{
152	typeset fstype=$2
153	[[ -z $fstype ]] && fstype=zfs
154	typeset out dir name
155
156	case $fstype in
157		zfs)
158			if [[ "$1" == "/"* ]] ; then
159				! zfs mount | awk -v fs="$1" '$2 == fs {exit 1}'
160			else
161				! zfs mount | awk -v ds="$1" '$1 == ds {exit 1}'
162			fi
163		;;
164		ufs|nfs)
165			if is_freebsd; then
166				mount -pt $fstype | while read dev dir _t _flags; do
167					[[ "$1" == "$dev" || "$1" == "$dir" ]] && return 0
168				done
169			else
170				out=$(df -F $fstype $1 2>/dev/null) || return
171
172				dir=${out%%\(*}
173				dir=${dir%% *}
174				name=${out##*\(}
175				name=${name%%\)*}
176				name=${name%% *}
177
178				[[ "$1" == "$dir" || "$1" == "$name" ]] && return 0
179			fi
180		;;
181		ext*)
182			df -t $fstype $1 > /dev/null 2>&1
183		;;
184		zvol)
185			if [[ -L "$ZVOL_DEVDIR/$1" ]]; then
186				link=$(readlink -f $ZVOL_DEVDIR/$1)
187				[[ -n "$link" ]] && \
188					mount | grep -q "^$link" && \
189						return 0
190			fi
191		;;
192		*)
193			false
194		;;
195	esac
196}
197
198# Return 0 if a dataset is mounted; 1 otherwise
199#
200# $1 dataset name
201# $2 filesystem type; optional - defaulted to zfs
202
203function mounted
204{
205	ismounted $1 $2
206}
207
208# Return 0 if a dataset is unmounted; 1 otherwise
209#
210# $1 dataset name
211# $2 filesystem type; optional - defaulted to zfs
212
213function unmounted
214{
215	! ismounted $1 $2
216}
217
218function default_setup
219{
220	default_setup_noexit "$@"
221
222	log_pass
223}
224
225function default_setup_no_mountpoint
226{
227	default_setup_noexit "$1" "$2" "$3" "yes"
228
229	log_pass
230}
231
232#
233# Given a list of disks, setup storage pools and datasets.
234#
235function default_setup_noexit
236{
237	typeset disklist=$1
238	typeset container=$2
239	typeset volume=$3
240	typeset no_mountpoint=$4
241	log_note begin default_setup_noexit
242
243	if is_global_zone; then
244		if poolexists $TESTPOOL ; then
245			destroy_pool $TESTPOOL
246		fi
247		[[ -d /$TESTPOOL ]] && rm -rf /$TESTPOOL
248		log_must zpool create -f $TESTPOOL $disklist
249	else
250		reexport_pool
251	fi
252
253	rm -rf $TESTDIR  || log_unresolved Could not remove $TESTDIR
254	mkdir -p $TESTDIR || log_unresolved Could not create $TESTDIR
255
256	log_must zfs create $TESTPOOL/$TESTFS
257	if [[ -z $no_mountpoint ]]; then
258		log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
259	fi
260
261	if [[ -n $container ]]; then
262		rm -rf $TESTDIR1  || \
263			log_unresolved Could not remove $TESTDIR1
264		mkdir -p $TESTDIR1 || \
265			log_unresolved Could not create $TESTDIR1
266
267		log_must zfs create $TESTPOOL/$TESTCTR
268		log_must zfs set canmount=off $TESTPOOL/$TESTCTR
269		log_must zfs create $TESTPOOL/$TESTCTR/$TESTFS1
270		if [[ -z $no_mountpoint ]]; then
271			log_must zfs set mountpoint=$TESTDIR1 \
272			    $TESTPOOL/$TESTCTR/$TESTFS1
273		fi
274	fi
275
276	if [[ -n $volume ]]; then
277		if is_global_zone ; then
278			log_must zfs create -V $VOLSIZE $TESTPOOL/$TESTVOL
279			block_device_wait
280		else
281			log_must zfs create $TESTPOOL/$TESTVOL
282		fi
283	fi
284}
285
286#
287# Given a list of disks, setup a storage pool, file system and
288# a container.
289#
290function default_container_setup
291{
292	typeset disklist=$1
293
294	default_setup "$disklist" "true"
295}
296
297#
298# Given a list of disks, setup a storage pool,file system
299# and a volume.
300#
301function default_volume_setup
302{
303	typeset disklist=$1
304
305	default_setup "$disklist" "" "true"
306}
307
308#
309# Given a list of disks, setup a storage pool,file system,
310# a container and a volume.
311#
312function default_container_volume_setup
313{
314	typeset disklist=$1
315
316	default_setup "$disklist" "true" "true"
317}
318
319#
320# Create a snapshot on a filesystem or volume. Defaultly create a snapshot on
321# filesystem
322#
323# $1 Existing filesystem or volume name. Default, $TESTPOOL/$TESTFS
324# $2 snapshot name. Default, $TESTSNAP
325#
326function create_snapshot
327{
328	typeset fs_vol=${1:-$TESTPOOL/$TESTFS}
329	typeset snap=${2:-$TESTSNAP}
330
331	[[ -z $fs_vol ]] && log_fail "Filesystem or volume's name is undefined."
332	[[ -z $snap ]] && log_fail "Snapshot's name is undefined."
333
334	if snapexists $fs_vol@$snap; then
335		log_fail "$fs_vol@$snap already exists."
336	fi
337	datasetexists $fs_vol || \
338		log_fail "$fs_vol must exist."
339
340	log_must zfs snapshot $fs_vol@$snap
341}
342
343#
344# Create a clone from a snapshot, default clone name is $TESTCLONE.
345#
346# $1 Existing snapshot, $TESTPOOL/$TESTFS@$TESTSNAP is default.
347# $2 Clone name, $TESTPOOL/$TESTCLONE is default.
348#
349function create_clone   # snapshot clone
350{
351	typeset snap=${1:-$TESTPOOL/$TESTFS@$TESTSNAP}
352	typeset clone=${2:-$TESTPOOL/$TESTCLONE}
353
354	[[ -z $snap ]] && \
355		log_fail "Snapshot name is undefined."
356	[[ -z $clone ]] && \
357		log_fail "Clone name is undefined."
358
359	log_must zfs clone $snap $clone
360}
361
362#
363# Create a bookmark of the given snapshot.  Defaultly create a bookmark on
364# filesystem.
365#
366# $1 Existing filesystem or volume name. Default, $TESTFS
367# $2 Existing snapshot name. Default, $TESTSNAP
368# $3 bookmark name. Default, $TESTBKMARK
369#
370function create_bookmark
371{
372	typeset fs_vol=${1:-$TESTFS}
373	typeset snap=${2:-$TESTSNAP}
374	typeset bkmark=${3:-$TESTBKMARK}
375
376	[[ -z $fs_vol ]] && log_fail "Filesystem or volume's name is undefined."
377	[[ -z $snap ]] && log_fail "Snapshot's name is undefined."
378	[[ -z $bkmark ]] && log_fail "Bookmark's name is undefined."
379
380	if bkmarkexists $fs_vol#$bkmark; then
381		log_fail "$fs_vol#$bkmark already exists."
382	fi
383	datasetexists $fs_vol || \
384		log_fail "$fs_vol must exist."
385	snapexists $fs_vol@$snap || \
386		log_fail "$fs_vol@$snap must exist."
387
388	log_must zfs bookmark $fs_vol@$snap $fs_vol#$bkmark
389}
390
391#
392# Create a temporary clone result of an interrupted resumable 'zfs receive'
393# $1 Destination filesystem name. Must not exist, will be created as the result
394#    of this function along with its %recv temporary clone
395# $2 Source filesystem name. Must not exist, will be created and destroyed
396#
397function create_recv_clone
398{
399	typeset recvfs="$1"
400	typeset sendfs="${2:-$TESTPOOL/create_recv_clone}"
401	typeset snap="$sendfs@snap1"
402	typeset incr="$sendfs@snap2"
403	typeset mountpoint="$TESTDIR/create_recv_clone"
404	typeset sendfile="$TESTDIR/create_recv_clone.zsnap"
405
406	[[ -z $recvfs ]] && log_fail "Recv filesystem's name is undefined."
407
408	datasetexists $recvfs && log_fail "Recv filesystem must not exist."
409	datasetexists $sendfs && log_fail "Send filesystem must not exist."
410
411	log_must zfs create -o compression=off -o mountpoint="$mountpoint" $sendfs
412	log_must zfs snapshot $snap
413	log_must eval "zfs send $snap | zfs recv -u $recvfs"
414	log_must mkfile 1m "$mountpoint/data"
415	log_must zfs snapshot $incr
416	log_must eval "zfs send -i $snap $incr | dd bs=10K count=1 \
417	    iflag=fullblock > $sendfile"
418	log_mustnot eval "zfs recv -su $recvfs < $sendfile"
419	destroy_dataset "$sendfs" "-r"
420	log_must rm -f "$sendfile"
421
422	if [[ $(get_prop 'inconsistent' "$recvfs/%recv") -ne 1 ]]; then
423		log_fail "Error creating temporary $recvfs/%recv clone"
424	fi
425}
426
427function default_mirror_setup
428{
429	default_mirror_setup_noexit $1 $2 $3
430
431	log_pass
432}
433
434#
435# Given a pair of disks, set up a storage pool and dataset for the mirror
436# @parameters: $1 the primary side of the mirror
437#   $2 the secondary side of the mirror
438# @uses: ZPOOL ZFS TESTPOOL TESTFS
439function default_mirror_setup_noexit
440{
441	readonly func="default_mirror_setup_noexit"
442	typeset primary=$1
443	typeset secondary=$2
444
445	[[ -z $primary ]] && \
446		log_fail "$func: No parameters passed"
447	[[ -z $secondary ]] && \
448		log_fail "$func: No secondary partition passed"
449	[[ -d /$TESTPOOL ]] && rm -rf /$TESTPOOL
450	log_must zpool create -f $TESTPOOL mirror $@
451	log_must zfs create $TESTPOOL/$TESTFS
452	log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
453}
454
455#
456# Destroy the configured testpool mirrors.
457# the mirrors are of the form ${TESTPOOL}{number}
458# @uses: ZPOOL ZFS TESTPOOL
459function destroy_mirrors
460{
461	default_cleanup_noexit
462
463	log_pass
464}
465
466function default_raidz_setup
467{
468	default_raidz_setup_noexit "$*"
469
470	log_pass
471}
472
473#
474# Given a minimum of two disks, set up a storage pool and dataset for the raid-z
475# $1 the list of disks
476#
477function default_raidz_setup_noexit
478{
479	typeset disklist="$*"
480	disks=(${disklist[*]})
481
482	if [[ ${#disks[*]} -lt 2 ]]; then
483		log_fail "A raid-z requires a minimum of two disks."
484	fi
485
486	[[ -d /$TESTPOOL ]] && rm -rf /$TESTPOOL
487	log_must zpool create -f $TESTPOOL raidz $disklist
488	log_must zfs create $TESTPOOL/$TESTFS
489	log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
490}
491
492#
493# Common function used to cleanup storage pools and datasets.
494#
495# Invoked at the start of the test suite to ensure the system
496# is in a known state, and also at the end of each set of
497# sub-tests to ensure errors from one set of tests doesn't
498# impact the execution of the next set.
499
500function default_cleanup
501{
502	default_cleanup_noexit
503
504	log_pass
505}
506
507#
508# Utility function used to list all available pool names.
509#
510# NOTE: $KEEP is a variable containing pool names, separated by a newline
511# character, that must be excluded from the returned list.
512#
513function get_all_pools
514{
515	zpool list -H -o name | grep -Fvx "$KEEP" | grep -v "$NO_POOLS"
516}
517
518function default_cleanup_noexit
519{
520	typeset pool=""
521	#
522	# Destroying the pool will also destroy any
523	# filesystems it contains.
524	#
525	if is_global_zone; then
526		zfs unmount -a > /dev/null 2>&1
527		ALL_POOLS=$(get_all_pools)
528		# Here, we loop through the pools we're allowed to
529		# destroy, only destroying them if it's safe to do
530		# so.
531		while [ ! -z ${ALL_POOLS} ]
532		do
533			for pool in ${ALL_POOLS}
534			do
535				if safe_to_destroy_pool $pool ;
536				then
537					destroy_pool $pool
538				fi
539			done
540			ALL_POOLS=$(get_all_pools)
541		done
542
543		zfs mount -a
544	else
545		typeset fs=""
546		for fs in $(zfs list -H -o name \
547		    | grep "^$ZONE_POOL/$ZONE_CTR[01234]/"); do
548			destroy_dataset "$fs" "-Rf"
549		done
550
551		# Need cleanup here to avoid garbage dir left.
552		for fs in $(zfs list -H -o name); do
553			[[ $fs == /$ZONE_POOL ]] && continue
554			[[ -d $fs ]] && log_must rm -rf $fs/*
555		done
556
557		#
558		# Reset the $ZONE_POOL/$ZONE_CTR[01234] file systems property to
559		# the default value
560		#
561		for fs in $(zfs list -H -o name); do
562			if [[ $fs == $ZONE_POOL/$ZONE_CTR[01234] ]]; then
563				log_must zfs set reservation=none $fs
564				log_must zfs set recordsize=128K $fs
565				log_must zfs set mountpoint=/$fs $fs
566				typeset enc=$(get_prop encryption $fs)
567				if [ -z "$enc" ] || [ "$enc" = "off" ]; then
568					log_must zfs set checksum=on $fs
569				fi
570				log_must zfs set compression=off $fs
571				log_must zfs set atime=on $fs
572				log_must zfs set devices=off $fs
573				log_must zfs set exec=on $fs
574				log_must zfs set setuid=on $fs
575				log_must zfs set readonly=off $fs
576				log_must zfs set snapdir=hidden $fs
577				log_must zfs set aclmode=groupmask $fs
578				log_must zfs set aclinherit=secure $fs
579			fi
580		done
581	fi
582
583	[[ -d $TESTDIR ]] && \
584		log_must rm -rf $TESTDIR
585
586	disk1=${DISKS%% *}
587	if is_mpath_device $disk1; then
588		delete_partitions
589	fi
590
591	rm -f $TEST_BASE_DIR/{err,out}
592}
593
594
595#
596# Common function used to cleanup storage pools, file systems
597# and containers.
598#
599function default_container_cleanup
600{
601	if ! is_global_zone; then
602		reexport_pool
603	fi
604
605	ismounted $TESTPOOL/$TESTCTR/$TESTFS1 &&
606	    log_must zfs unmount $TESTPOOL/$TESTCTR/$TESTFS1
607
608	destroy_dataset "$TESTPOOL/$TESTCTR/$TESTFS1" "-R"
609	destroy_dataset "$TESTPOOL/$TESTCTR" "-Rf"
610
611	[[ -e $TESTDIR1 ]] && \
612	    log_must rm -rf $TESTDIR1
613
614	default_cleanup
615}
616
617#
618# Common function used to cleanup snapshot of file system or volume. Default to
619# delete the file system's snapshot
620#
621# $1 snapshot name
622#
623function destroy_snapshot
624{
625	typeset snap=${1:-$TESTPOOL/$TESTFS@$TESTSNAP}
626
627	if ! snapexists $snap; then
628		log_fail "'$snap' does not exist."
629	fi
630
631	#
632	# For the sake of the value which come from 'get_prop' is not equal
633	# to the really mountpoint when the snapshot is unmounted. So, firstly
634	# check and make sure this snapshot's been mounted in current system.
635	#
636	typeset mtpt=""
637	if ismounted $snap; then
638		mtpt=$(get_prop mountpoint $snap)
639	fi
640
641	destroy_dataset "$snap"
642	[[ $mtpt != "" && -d $mtpt ]] && \
643		log_must rm -rf $mtpt
644}
645
646#
647# Common function used to cleanup clone.
648#
649# $1 clone name
650#
651function destroy_clone
652{
653	typeset clone=${1:-$TESTPOOL/$TESTCLONE}
654
655	if ! datasetexists $clone; then
656		log_fail "'$clone' does not existed."
657	fi
658
659	# With the same reason in destroy_snapshot
660	typeset mtpt=""
661	if ismounted $clone; then
662		mtpt=$(get_prop mountpoint $clone)
663	fi
664
665	destroy_dataset "$clone"
666	[[ $mtpt != "" && -d $mtpt ]] && \
667		log_must rm -rf $mtpt
668}
669
670#
671# Common function used to cleanup bookmark of file system or volume.  Default
672# to delete the file system's bookmark.
673#
674# $1 bookmark name
675#
676function destroy_bookmark
677{
678	typeset bkmark=${1:-$TESTPOOL/$TESTFS#$TESTBKMARK}
679
680	if ! bkmarkexists $bkmark; then
681		log_fail "'$bkmarkp' does not existed."
682	fi
683
684	destroy_dataset "$bkmark"
685}
686
687# Return 0 if a snapshot exists; $? otherwise
688#
689# $1 - snapshot name
690
691function snapexists
692{
693	zfs list -H -t snapshot "$1" > /dev/null 2>&1
694}
695
696#
697# Return 0 if a bookmark exists; $? otherwise
698#
699# $1 - bookmark name
700#
701function bkmarkexists
702{
703	zfs list -H -t bookmark "$1" > /dev/null 2>&1
704}
705
706#
707# Return 0 if a hold exists; $? otherwise
708#
709# $1 - hold tag
710# $2 - snapshot name
711#
712function holdexists
713{
714	! zfs holds "$2" | awk -v t="$1" '$2 ~ t { exit 1 }'
715}
716
717#
718# Set a property to a certain value on a dataset.
719# Sets a property of the dataset to the value as passed in.
720# @param:
721#	$1 dataset who's property is being set
722#	$2 property to set
723#	$3 value to set property to
724# @return:
725#	0 if the property could be set.
726#	non-zero otherwise.
727# @use: ZFS
728#
729function dataset_setprop
730{
731	typeset fn=dataset_setprop
732
733	if (($# < 3)); then
734		log_note "$fn: Insufficient parameters (need 3, had $#)"
735		return 1
736	fi
737	typeset output=
738	output=$(zfs set $2=$3 $1 2>&1)
739	typeset rv=$?
740	if ((rv != 0)); then
741		log_note "Setting property on $1 failed."
742		log_note "property $2=$3"
743		log_note "Return Code: $rv"
744		log_note "Output: $output"
745		return $rv
746	fi
747	return 0
748}
749
750#
751# Check a numeric assertion
752# @parameter: $@ the assertion to check
753# @output: big loud notice if assertion failed
754# @use: log_fail
755#
756function assert
757{
758	(($@)) || log_fail "$@"
759}
760
761#
762# Function to format partition size of a disk
763# Given a disk cxtxdx reduces all partitions
764# to 0 size
765#
766function zero_partitions #<whole_disk_name>
767{
768	typeset diskname=$1
769	typeset i
770
771	if is_freebsd; then
772		gpart destroy -F $diskname
773	elif is_linux; then
774		DSK=$DEV_DSKDIR/$diskname
775		DSK=$(echo $DSK | sed -e "s|//|/|g")
776		log_must parted $DSK -s -- mklabel gpt
777		blockdev --rereadpt $DSK 2>/dev/null
778		block_device_wait
779	else
780		for i in 0 1 3 4 5 6 7
781		do
782			log_must set_partition $i "" 0mb $diskname
783		done
784	fi
785
786	return 0
787}
788
789#
790# Given a slice, size and disk, this function
791# formats the slice to the specified size.
792# Size should be specified with units as per
793# the `format` command requirements eg. 100mb 3gb
794#
795# NOTE: This entire interface is problematic for the Linux parted utility
796# which requires the end of the partition to be specified.  It would be
797# best to retire this interface and replace it with something more flexible.
798# At the moment a best effort is made.
799#
800# arguments: <slice_num> <slice_start> <size_plus_units>  <whole_disk_name>
801function set_partition
802{
803	typeset -i slicenum=$1
804	typeset start=$2
805	typeset size=$3
806	typeset disk=${4#$DEV_DSKDIR/}
807	disk=${disk#$DEV_RDSKDIR/}
808
809	case "$UNAME" in
810	Linux)
811		if [[ -z $size || -z $disk ]]; then
812			log_fail "The size or disk name is unspecified."
813		fi
814		disk=$DEV_DSKDIR/$disk
815		typeset size_mb=${size%%[mMgG]}
816
817		size_mb=${size_mb%%[mMgG][bB]}
818		if [[ ${size:1:1} == 'g' ]]; then
819			((size_mb = size_mb * 1024))
820		fi
821
822		# Create GPT partition table when setting slice 0 or
823		# when the device doesn't already contain a GPT label.
824		parted $disk -s -- print 1 >/dev/null
825		typeset ret_val=$?
826		if [[ $slicenum -eq 0 || $ret_val -ne 0 ]]; then
827			if ! parted $disk -s -- mklabel gpt; then
828				log_note "Failed to create GPT partition table on $disk"
829				return 1
830			fi
831		fi
832
833		# When no start is given align on the first cylinder.
834		if [[ -z "$start" ]]; then
835			start=1
836		fi
837
838		# Determine the cylinder size for the device and using
839		# that calculate the end offset in cylinders.
840		typeset -i cly_size_kb=0
841		cly_size_kb=$(parted -m $disk -s -- unit cyl print |
842			awk -F '[:k.]' 'NR == 3 {print $4}')
843		((end = (size_mb * 1024 / cly_size_kb) + start))
844
845		parted $disk -s -- \
846		    mkpart part$slicenum ${start}cyl ${end}cyl
847		typeset ret_val=$?
848		if [[ $ret_val -ne 0 ]]; then
849			log_note "Failed to create partition $slicenum on $disk"
850			return 1
851		fi
852
853		blockdev --rereadpt $disk 2>/dev/null
854		block_device_wait $disk
855		;;
856	FreeBSD)
857		if [[ -z $size || -z $disk ]]; then
858			log_fail "The size or disk name is unspecified."
859		fi
860		disk=$DEV_DSKDIR/$disk
861
862		if [[ $slicenum -eq 0 ]] || ! gpart show $disk >/dev/null 2>&1; then
863			gpart destroy -F $disk >/dev/null 2>&1
864			if ! gpart create -s GPT $disk; then
865				log_note "Failed to create GPT partition table on $disk"
866				return 1
867			fi
868		fi
869
870		typeset index=$((slicenum + 1))
871
872		if [[ -n $start ]]; then
873			start="-b $start"
874		fi
875		gpart add -t freebsd-zfs $start -s $size -i $index $disk
876		if [[ $ret_val -ne 0 ]]; then
877			log_note "Failed to create partition $slicenum on $disk"
878			return 1
879		fi
880
881		block_device_wait $disk
882		;;
883	*)
884		if [[ -z $slicenum || -z $size || -z $disk ]]; then
885			log_fail "The slice, size or disk name is unspecified."
886		fi
887
888		typeset format_file=/var/tmp/format_in.$$
889
890		echo "partition" >$format_file
891		echo "$slicenum" >> $format_file
892		echo "" >> $format_file
893		echo "" >> $format_file
894		echo "$start" >> $format_file
895		echo "$size" >> $format_file
896		echo "label" >> $format_file
897		echo "" >> $format_file
898		echo "q" >> $format_file
899		echo "q" >> $format_file
900
901		format -e -s -d $disk -f $format_file
902		typeset ret_val=$?
903		rm -f $format_file
904		;;
905	esac
906
907	if [[ $ret_val -ne 0 ]]; then
908		log_note "Unable to format $disk slice $slicenum to $size"
909		return 1
910	fi
911	return 0
912}
913
914#
915# Delete all partitions on all disks - this is specifically for the use of multipath
916# devices which currently can only be used in the test suite as raw/un-partitioned
917# devices (ie a zpool cannot be created on a whole mpath device that has partitions)
918#
919function delete_partitions
920{
921	typeset disk
922
923	if [[ -z $DISKSARRAY ]]; then
924		DISKSARRAY=$DISKS
925	fi
926
927	if is_linux; then
928		typeset -i part
929		for disk in $DISKSARRAY; do
930			for (( part = 1; part < MAX_PARTITIONS; part++ )); do
931				typeset partition=${disk}${SLICE_PREFIX}${part}
932				parted $DEV_DSKDIR/$disk -s rm $part > /dev/null 2>&1
933				if lsblk | grep -qF ${partition}; then
934					log_fail "Partition ${partition} not deleted"
935				else
936					log_note "Partition ${partition} deleted"
937				fi
938			done
939		done
940	elif is_freebsd; then
941		for disk in $DISKSARRAY; do
942			if gpart destroy -F $disk; then
943				log_note "Partitions for ${disk} deleted"
944			else
945				log_fail "Partitions for ${disk} not deleted"
946			fi
947		done
948	fi
949}
950
951#
952# Get the end cyl of the given slice
953#
954function get_endslice #<disk> <slice>
955{
956	typeset disk=$1
957	typeset slice=$2
958	if [[ -z $disk || -z $slice ]] ; then
959		log_fail "The disk name or slice number is unspecified."
960	fi
961
962	case "$UNAME" in
963	Linux)
964		endcyl=$(parted -s $DEV_DSKDIR/$disk -- unit cyl print | \
965			awk "/part${slice}/"' {sub(/cyl/, "", $3); print $3}')
966		((endcyl = (endcyl + 1)))
967		;;
968	FreeBSD)
969		disk=${disk#/dev/zvol/}
970		disk=${disk%p*}
971		slice=$((slice + 1))
972		endcyl=$(gpart show $disk | \
973			awk -v slice=$slice '$3 == slice { print $1 + $2 }')
974		;;
975	*)
976		disk=${disk#/dev/dsk/}
977		disk=${disk#/dev/rdsk/}
978		disk=${disk%s*}
979
980		typeset -i ratio=0
981		ratio=$(prtvtoc /dev/rdsk/${disk}s2 | \
982		    awk '/sectors\/cylinder/ {print $2}')
983
984		if ((ratio == 0)); then
985			return
986		fi
987
988		typeset -i endcyl=$(prtvtoc -h /dev/rdsk/${disk}s2 |
989		    awk -v token="$slice" '$1 == token {print $6}')
990
991		((endcyl = (endcyl + 1) / ratio))
992		;;
993	esac
994
995	echo $endcyl
996}
997
998
999#
1000# Given a size,disk and total slice number,  this function formats the
1001# disk slices from 0 to the total slice number with the same specified
1002# size.
1003#
1004function partition_disk	#<slice_size> <whole_disk_name>	<total_slices>
1005{
1006	typeset -i i=0
1007	typeset slice_size=$1
1008	typeset disk_name=$2
1009	typeset total_slices=$3
1010	typeset cyl
1011
1012	zero_partitions $disk_name
1013	while ((i < $total_slices)); do
1014		if ! is_linux; then
1015			if ((i == 2)); then
1016				((i = i + 1))
1017				continue
1018			fi
1019		fi
1020		log_must set_partition $i "$cyl" $slice_size $disk_name
1021		cyl=$(get_endslice $disk_name $i)
1022		((i = i+1))
1023	done
1024}
1025
1026#
1027# This function continues to write to a filenum number of files into dirnum
1028# number of directories until either file_write returns an error or the
1029# maximum number of files per directory have been written.
1030#
1031# Usage:
1032# fill_fs [destdir] [dirnum] [filenum] [bytes] [num_writes] [data]
1033#
1034# Return value: 0 on success
1035#		non 0 on error
1036#
1037# Where :
1038#	destdir:    is the directory where everything is to be created under
1039#	dirnum:	    the maximum number of subdirectories to use, -1 no limit
1040#	filenum:    the maximum number of files per subdirectory
1041#	bytes:	    number of bytes to write
1042#	num_writes: number of types to write out bytes
1043#	data:	    the data that will be written
1044#
1045#	E.g.
1046#	fill_fs /testdir 20 25 1024 256 0
1047#
1048# Note: bytes * num_writes equals the size of the testfile
1049#
1050function fill_fs # destdir dirnum filenum bytes num_writes data
1051{
1052	typeset destdir=${1:-$TESTDIR}
1053	typeset -i dirnum=${2:-50}
1054	typeset -i filenum=${3:-50}
1055	typeset -i bytes=${4:-8192}
1056	typeset -i num_writes=${5:-10240}
1057	typeset data=${6:-0}
1058
1059	mkdir -p $destdir/{1..$dirnum}
1060	for f in $destdir/{1..$dirnum}/$TESTFILE{1..$filenum}; do
1061		file_write -o create -f $f -b $bytes -c $num_writes -d $data \
1062		|| return
1063	done
1064}
1065
1066# Get the specified dataset property in parsable format or fail
1067function get_prop # property dataset
1068{
1069	typeset prop=$1
1070	typeset dataset=$2
1071
1072	zfs get -Hpo value "$prop" "$dataset" || log_fail "zfs get $prop $dataset"
1073}
1074
1075# Get the specified pool property in parsable format or fail
1076function get_pool_prop # property pool
1077{
1078	typeset prop=$1
1079	typeset pool=$2
1080
1081	zpool get -Hpo value "$prop" "$pool" || log_fail "zpool get $prop $pool"
1082}
1083
1084# Return 0 if a pool exists; $? otherwise
1085#
1086# $1 - pool name
1087
1088function poolexists
1089{
1090	typeset pool=$1
1091
1092	if [[ -z $pool ]]; then
1093		log_note "No pool name given."
1094		return 1
1095	fi
1096
1097	zpool get name "$pool" > /dev/null 2>&1
1098}
1099
1100# Return 0 if all the specified datasets exist; $? otherwise
1101#
1102# $1-n  dataset name
1103function datasetexists
1104{
1105	if (($# == 0)); then
1106		log_note "No dataset name given."
1107		return 1
1108	fi
1109
1110	zfs get name "$@" > /dev/null 2>&1
1111}
1112
1113# return 0 if none of the specified datasets exists, otherwise return 1.
1114#
1115# $1-n  dataset name
1116function datasetnonexists
1117{
1118	if (($# == 0)); then
1119		log_note "No dataset name given."
1120		return 1
1121	fi
1122
1123	while (($# > 0)); do
1124		zfs list -H -t filesystem,snapshot,volume $1 > /dev/null 2>&1 \
1125		    && return 1
1126		shift
1127	done
1128
1129	return 0
1130}
1131
1132# FreeBSD breaks exports(5) at whitespace and doesn't process escapes
1133# Solaris just breaks
1134#
1135# cf. https://github.com/openzfs/zfs/pull/13165#issuecomment-1059845807
1136#
1137# Linux can have spaces (which are \OOO-escaped),
1138# but can't have backslashes because they're parsed recursively
1139function shares_can_have_whitespace
1140{
1141	is_linux
1142}
1143
1144function is_shared_freebsd
1145{
1146	typeset fs=$1
1147
1148	pgrep -q mountd && showmount -E | grep -qx "$fs"
1149}
1150
1151function is_shared_illumos
1152{
1153	typeset fs=$1
1154	typeset mtpt
1155
1156	for mtpt in `share | awk '{print $2}'` ; do
1157		if [[ $mtpt == $fs ]] ; then
1158			return 0
1159		fi
1160	done
1161
1162	typeset stat=$(svcs -H -o STA nfs/server:default)
1163	if [[ $stat != "ON" ]]; then
1164		log_note "Current nfs/server status: $stat"
1165	fi
1166
1167	return 1
1168}
1169
1170function is_shared_linux
1171{
1172	typeset fs=$1
1173	! exportfs -s | awk -v fs="${fs//\\/\\\\}" '/^\// && $1 == fs {exit 1}'
1174}
1175
1176#
1177# Given a mountpoint, or a dataset name, determine if it is shared via NFS.
1178#
1179# Returns 0 if shared, 1 otherwise.
1180#
1181function is_shared
1182{
1183	typeset fs=$1
1184	typeset mtpt
1185
1186	if [[ $fs != "/"* ]] ; then
1187		if datasetnonexists "$fs" ; then
1188			return 1
1189		else
1190			mtpt=$(get_prop mountpoint "$fs")
1191			case "$mtpt" in
1192				none|legacy|-) return 1
1193					;;
1194				*)	fs=$mtpt
1195					;;
1196			esac
1197		fi
1198	fi
1199
1200	case "$UNAME" in
1201	FreeBSD)	is_shared_freebsd "$fs"	;;
1202	Linux)		is_shared_linux "$fs"	;;
1203	*)		is_shared_illumos "$fs"	;;
1204	esac
1205}
1206
1207function is_exported_illumos
1208{
1209	typeset fs=$1
1210	typeset mtpt _
1211
1212	while read -r mtpt _; do
1213		[ "$mtpt" = "$fs" ] && return
1214	done < /etc/dfs/sharetab
1215
1216	return 1
1217}
1218
1219function is_exported_freebsd
1220{
1221	typeset fs=$1
1222	typeset mtpt _
1223
1224	while read -r mtpt _; do
1225		[ "$mtpt" = "$fs" ] && return
1226	done < /etc/zfs/exports
1227
1228	return 1
1229}
1230
1231function is_exported_linux
1232{
1233	typeset fs=$1
1234	typeset mtpt _
1235
1236	while read -r mtpt _; do
1237		[ "$(printf "$mtpt")" = "$fs" ] && return
1238	done < /etc/exports.d/zfs.exports
1239
1240	return 1
1241}
1242
1243#
1244# Given a mountpoint, or a dataset name, determine if it is exported via
1245# the os-specific NFS exports file.
1246#
1247# Returns 0 if exported, 1 otherwise.
1248#
1249function is_exported
1250{
1251	typeset fs=$1
1252	typeset mtpt
1253
1254	if [[ $fs != "/"* ]] ; then
1255		if datasetnonexists "$fs" ; then
1256			return 1
1257		else
1258			mtpt=$(get_prop mountpoint "$fs")
1259			case $mtpt in
1260				none|legacy|-) return 1
1261					;;
1262				*)	fs=$mtpt
1263					;;
1264			esac
1265		fi
1266	fi
1267
1268	case "$UNAME" in
1269	FreeBSD)	is_exported_freebsd "$fs"	;;
1270	Linux)		is_exported_linux "$fs"	;;
1271	*)		is_exported_illumos "$fs"	;;
1272	esac
1273}
1274
1275#
1276# Given a dataset name determine if it is shared via SMB.
1277#
1278# Returns 0 if shared, 1 otherwise.
1279#
1280function is_shared_smb
1281{
1282	typeset fs=$1
1283
1284	datasetexists "$fs" || return
1285
1286	if is_linux; then
1287		net usershare list | grep -xFq "${fs//[-\/]/_}"
1288	else
1289		log_note "SMB on $UNAME currently unsupported by the test framework"
1290		return 1
1291	fi
1292}
1293
1294#
1295# Given a mountpoint, determine if it is not shared via NFS.
1296#
1297# Returns 0 if not shared, 1 otherwise.
1298#
1299function not_shared
1300{
1301	! is_shared $1
1302}
1303
1304#
1305# Given a dataset determine if it is not shared via SMB.
1306#
1307# Returns 0 if not shared, 1 otherwise.
1308#
1309function not_shared_smb
1310{
1311	! is_shared_smb $1
1312}
1313
1314#
1315# Helper function to unshare a mountpoint.
1316#
1317function unshare_fs #fs
1318{
1319	typeset fs=$1
1320
1321	if is_shared $fs || is_shared_smb $fs; then
1322		log_must zfs unshare $fs
1323	fi
1324}
1325
1326#
1327# Helper function to share a NFS mountpoint.
1328#
1329function share_nfs #fs
1330{
1331	typeset fs=$1
1332
1333	is_shared "$fs" && return
1334
1335	case "$UNAME" in
1336	Linux)
1337		log_must exportfs "*:$fs"
1338		;;
1339	FreeBSD)
1340		typeset mountd
1341		read -r mountd < /var/run/mountd.pid
1342		log_must eval "printf '%s\t\n' \"$fs\" >> /etc/zfs/exports"
1343		log_must kill -s HUP "$mountd"
1344		;;
1345	*)
1346		log_must share -F nfs "$fs"
1347		;;
1348	esac
1349
1350	return 0
1351}
1352
1353#
1354# Helper function to unshare a NFS mountpoint.
1355#
1356function unshare_nfs #fs
1357{
1358	typeset fs=$1
1359
1360	! is_shared "$fs" && return
1361
1362	case "$UNAME" in
1363	Linux)
1364		log_must exportfs -u "*:$fs"
1365		;;
1366	FreeBSD)
1367		typeset mountd
1368		read -r mountd < /var/run/mountd.pid
1369		awk -v fs="${fs//\\/\\\\}" '$1 != fs' /etc/zfs/exports > /etc/zfs/exports.$$
1370		log_must mv /etc/zfs/exports.$$ /etc/zfs/exports
1371		log_must kill -s HUP "$mountd"
1372		;;
1373	*)
1374		log_must unshare -F nfs $fs
1375		;;
1376	esac
1377
1378	return 0
1379}
1380
1381#
1382# Helper function to show NFS shares.
1383#
1384function showshares_nfs
1385{
1386	case "$UNAME" in
1387	Linux)
1388		exportfs -v
1389		;;
1390	FreeBSD)
1391		showmount
1392		;;
1393	*)
1394		share -F nfs
1395		;;
1396	esac
1397}
1398
1399function check_nfs
1400{
1401	case "$UNAME" in
1402	Linux)
1403		exportfs -s
1404		;;
1405	FreeBSD)
1406		showmount -e
1407		;;
1408	*)
1409		log_unsupported "Unknown platform"
1410		;;
1411	esac || log_unsupported "The NFS utilities are not installed"
1412}
1413
1414#
1415# Check NFS server status and trigger it online.
1416#
1417function setup_nfs_server
1418{
1419	# Cannot share directory in non-global zone.
1420	#
1421	if ! is_global_zone; then
1422		log_note "Cannot trigger NFS server by sharing in LZ."
1423		return
1424	fi
1425
1426	if is_linux; then
1427		#
1428		# Re-synchronize /var/lib/nfs/etab with /etc/exports and
1429		# /etc/exports.d./* to provide a clean test environment.
1430		#
1431		log_must exportfs -r
1432
1433		log_note "NFS server must be started prior to running ZTS."
1434		return
1435	elif is_freebsd; then
1436		log_must kill -s HUP $(</var/run/mountd.pid)
1437
1438		log_note "NFS server must be started prior to running ZTS."
1439		return
1440	fi
1441
1442	typeset nfs_fmri="svc:/network/nfs/server:default"
1443	if [[ $(svcs -Ho STA $nfs_fmri) != "ON" ]]; then
1444		#
1445		# Only really sharing operation can enable NFS server
1446		# to online permanently.
1447		#
1448		typeset dummy=/tmp/dummy
1449
1450		if [[ -d $dummy ]]; then
1451			log_must rm -rf $dummy
1452		fi
1453
1454		log_must mkdir $dummy
1455		log_must share $dummy
1456
1457		#
1458		# Waiting for fmri's status to be the final status.
1459		# Otherwise, in transition, an asterisk (*) is appended for
1460		# instances, unshare will reverse status to 'DIS' again.
1461		#
1462		# Waiting for 1's at least.
1463		#
1464		log_must sleep 1
1465		timeout=10
1466		while [[ timeout -ne 0 && $(svcs -Ho STA $nfs_fmri) == *'*' ]]
1467		do
1468			log_must sleep 1
1469
1470			((timeout -= 1))
1471		done
1472
1473		log_must unshare $dummy
1474		log_must rm -rf $dummy
1475	fi
1476
1477	log_note "Current NFS status: '$(svcs -Ho STA,FMRI $nfs_fmri)'"
1478}
1479
1480#
1481# To verify whether calling process is in global zone
1482#
1483# Return 0 if in global zone, 1 in non-global zone
1484#
1485function is_global_zone
1486{
1487	if is_linux || is_freebsd; then
1488		return 0
1489	else
1490		typeset cur_zone=$(zonename 2>/dev/null)
1491		[ $cur_zone = "global" ]
1492	fi
1493}
1494
1495#
1496# Verify whether test is permitted to run from
1497# global zone, local zone, or both
1498#
1499# $1 zone limit, could be "global", "local", or "both"(no limit)
1500#
1501# Return 0 if permitted, otherwise exit with log_unsupported
1502#
1503function verify_runnable # zone limit
1504{
1505	typeset limit=$1
1506
1507	[[ -z $limit ]] && return 0
1508
1509	if is_global_zone ; then
1510		case $limit in
1511			global|both)
1512				;;
1513			local)	log_unsupported "Test is unable to run from "\
1514					"global zone."
1515				;;
1516			*)	log_note "Warning: unknown limit $limit - " \
1517					"use both."
1518				;;
1519		esac
1520	else
1521		case $limit in
1522			local|both)
1523				;;
1524			global)	log_unsupported "Test is unable to run from "\
1525					"local zone."
1526				;;
1527			*)	log_note "Warning: unknown limit $limit - " \
1528					"use both."
1529				;;
1530		esac
1531
1532		reexport_pool
1533	fi
1534
1535	return 0
1536}
1537
1538# Return 0 if create successfully or the pool exists; $? otherwise
1539# Note: In local zones, this function should return 0 silently.
1540#
1541# $1 - pool name
1542# $2-n - [keyword] devs_list
1543
1544function create_pool #pool devs_list
1545{
1546	typeset pool=${1%%/*}
1547
1548	shift
1549
1550	if [[ -z $pool ]]; then
1551		log_note "Missing pool name."
1552		return 1
1553	fi
1554
1555	if poolexists $pool ; then
1556		destroy_pool $pool
1557	fi
1558
1559	if is_global_zone ; then
1560		[[ -d /$pool ]] && rm -rf /$pool
1561		log_must zpool create -f $pool $@
1562	fi
1563
1564	return 0
1565}
1566
1567# Return 0 if destroy successfully or the pool exists; $? otherwise
1568# Note: In local zones, this function should return 0 silently.
1569#
1570# $1 - pool name
1571# Destroy pool with the given parameters.
1572
1573function destroy_pool #pool
1574{
1575	typeset pool=${1%%/*}
1576	typeset mtpt
1577
1578	if [[ -z $pool ]]; then
1579		log_note "No pool name given."
1580		return 1
1581	fi
1582
1583	if is_global_zone ; then
1584		if poolexists "$pool" ; then
1585			mtpt=$(get_prop mountpoint "$pool")
1586
1587			# At times, syseventd/udev activity can cause attempts
1588			# to destroy a pool to fail with EBUSY. We retry a few
1589			# times allowing failures before requiring the destroy
1590			# to succeed.
1591			log_must_busy zpool destroy -f $pool
1592
1593			[[ -d $mtpt ]] && \
1594				log_must rm -rf $mtpt
1595		else
1596			log_note "Pool does not exist. ($pool)"
1597			return 1
1598		fi
1599	fi
1600
1601	return 0
1602}
1603
1604# Return 0 if created successfully; $? otherwise
1605#
1606# $1 - dataset name
1607# $2-n - dataset options
1608
1609function create_dataset #dataset dataset_options
1610{
1611	typeset dataset=$1
1612
1613	shift
1614
1615	if [[ -z $dataset ]]; then
1616		log_note "Missing dataset name."
1617		return 1
1618	fi
1619
1620	if datasetexists $dataset ; then
1621		destroy_dataset $dataset
1622	fi
1623
1624	log_must zfs create $@ $dataset
1625
1626	return 0
1627}
1628
1629# Return 0 if destroy successfully or the dataset exists; $? otherwise
1630# Note: In local zones, this function should return 0 silently.
1631#
1632# $1 - dataset name
1633# $2 - custom arguments for zfs destroy
1634# Destroy dataset with the given parameters.
1635
1636function destroy_dataset # dataset [args]
1637{
1638	typeset dataset=$1
1639	typeset mtpt
1640	typeset args=${2:-""}
1641
1642	if [[ -z $dataset ]]; then
1643		log_note "No dataset name given."
1644		return 1
1645	fi
1646
1647	if is_global_zone ; then
1648		if datasetexists "$dataset" ; then
1649			mtpt=$(get_prop mountpoint "$dataset")
1650			log_must_busy zfs destroy $args $dataset
1651
1652			[ -d $mtpt ] && log_must rm -rf $mtpt
1653		else
1654			log_note "Dataset does not exist. ($dataset)"
1655			return 1
1656		fi
1657	fi
1658
1659	return 0
1660}
1661
1662#
1663# Reexport TESTPOOL & TESTPOOL(1-4)
1664#
1665function reexport_pool
1666{
1667	typeset -i cntctr=5
1668	typeset -i i=0
1669
1670	while ((i < cntctr)); do
1671		if ((i == 0)); then
1672			TESTPOOL=$ZONE_POOL/$ZONE_CTR$i
1673			if ! ismounted $TESTPOOL; then
1674				log_must zfs mount $TESTPOOL
1675			fi
1676		else
1677			eval TESTPOOL$i=$ZONE_POOL/$ZONE_CTR$i
1678			if eval ! ismounted \$TESTPOOL$i; then
1679				log_must eval zfs mount \$TESTPOOL$i
1680			fi
1681		fi
1682		((i += 1))
1683	done
1684}
1685
1686#
1687# Verify a given disk or pool state
1688#
1689# Return 0 is pool/disk matches expected state, 1 otherwise
1690#
1691function check_state # pool disk state{online,offline,degraded}
1692{
1693	typeset pool=$1
1694	typeset disk=${2#$DEV_DSKDIR/}
1695	typeset state=$3
1696
1697	[[ -z $pool ]] || [[ -z $state ]] \
1698	    && log_fail "Arguments invalid or missing"
1699
1700	if [[ -z $disk ]]; then
1701		#check pool state only
1702		zpool get -H -o value health $pool | grep -qi "$state"
1703	else
1704		zpool status -v $pool | grep "$disk" | grep -qi "$state"
1705	fi
1706}
1707
1708#
1709# Get the mountpoint of snapshot
1710# For the snapshot use <mp_filesystem>/.zfs/snapshot/<snap>
1711# as its mountpoint
1712#
1713function snapshot_mountpoint
1714{
1715	typeset dataset=${1:-$TESTPOOL/$TESTFS@$TESTSNAP}
1716
1717	if [[ $dataset != *@* ]]; then
1718		log_fail "Error name of snapshot '$dataset'."
1719	fi
1720
1721	typeset fs=${dataset%@*}
1722	typeset snap=${dataset#*@}
1723
1724	if [[ -z $fs || -z $snap ]]; then
1725		log_fail "Error name of snapshot '$dataset'."
1726	fi
1727
1728	echo $(get_prop mountpoint $fs)/.zfs/snapshot/$snap
1729}
1730
1731#
1732# Given a device and 'ashift' value verify it's correctly set on every label
1733#
1734function verify_ashift # device ashift
1735{
1736	typeset device="$1"
1737	typeset ashift="$2"
1738
1739	zdb -e -lll $device | awk -v ashift=$ashift '
1740	    /ashift: / {
1741	        if (ashift != $2)
1742	            exit 1;
1743	        else
1744	            count++;
1745	    }
1746	    END {
1747	        exit (count != 4);
1748	    }'
1749}
1750
1751#
1752# Given a pool and file system, this function will verify the file system
1753# using the zdb internal tool. Note that the pool is exported and imported
1754# to ensure it has consistent state.
1755#
1756function verify_filesys # pool filesystem dir
1757{
1758	typeset pool="$1"
1759	typeset filesys="$2"
1760	typeset zdbout="/tmp/zdbout.$$"
1761
1762	shift
1763	shift
1764	typeset dirs=$@
1765	typeset search_path=""
1766
1767	log_note "Calling zdb to verify filesystem '$filesys'"
1768	zfs unmount -a > /dev/null 2>&1
1769	log_must zpool export $pool
1770
1771	if [[ -n $dirs ]] ; then
1772		for dir in $dirs ; do
1773			search_path="$search_path -d $dir"
1774		done
1775	fi
1776
1777	log_must zpool import $search_path $pool
1778
1779	if ! zdb -cudi $filesys > $zdbout 2>&1; then
1780		log_note "Output: zdb -cudi $filesys"
1781		cat $zdbout
1782		rm -f $zdbout
1783		log_fail "zdb detected errors with: '$filesys'"
1784	fi
1785
1786	log_must zfs mount -a
1787	log_must rm -rf $zdbout
1788}
1789
1790#
1791# Given a pool issue a scrub and verify that no checksum errors are reported.
1792#
1793function verify_pool
1794{
1795	typeset pool=${1:-$TESTPOOL}
1796
1797	log_must zpool scrub $pool
1798	log_must wait_scrubbed $pool
1799
1800	typeset -i cksum=$(zpool status $pool | awk '
1801	    !NF { isvdev = 0 }
1802	    isvdev { errors += $NF }
1803	    /CKSUM$/ { isvdev = 1 }
1804	    END { print errors }
1805	')
1806	if [[ $cksum != 0 ]]; then
1807		log_must zpool status -v
1808	        log_fail "Unexpected CKSUM errors found on $pool ($cksum)"
1809	fi
1810}
1811
1812#
1813# Given a pool, and this function list all disks in the pool
1814#
1815function get_disklist # pool
1816{
1817	echo $(zpool iostat -v $1 | awk '(NR > 4) {print $1}' | \
1818	    grep -vEe '^-----' -e "^(mirror|raidz[1-3]|draid[1-3]|spare|log|cache|special|dedup)|\-[0-9]$")
1819}
1820
1821#
1822# Given a pool, and this function list all disks in the pool with their full
1823# path (like "/dev/sda" instead of "sda").
1824#
1825function get_disklist_fullpath # pool
1826{
1827	get_disklist "-P $1"
1828}
1829
1830
1831
1832# /**
1833#  This function kills a given list of processes after a time period. We use
1834#  this in the stress tests instead of STF_TIMEOUT so that we can have processes
1835#  run for a fixed amount of time, yet still pass. Tests that hit STF_TIMEOUT
1836#  would be listed as FAIL, which we don't want : we're happy with stress tests
1837#  running for a certain amount of time, then finishing.
1838#
1839# @param $1 the time in seconds after which we should terminate these processes
1840# @param $2..$n the processes we wish to terminate.
1841# */
1842function stress_timeout
1843{
1844	typeset -i TIMEOUT=$1
1845	shift
1846	typeset cpids="$@"
1847
1848	log_note "Waiting for child processes($cpids). " \
1849		"It could last dozens of minutes, please be patient ..."
1850	log_must sleep $TIMEOUT
1851
1852	log_note "Killing child processes after ${TIMEOUT} stress timeout."
1853	typeset pid
1854	for pid in $cpids; do
1855		ps -p $pid > /dev/null 2>&1 &&
1856			log_must kill -USR1 $pid
1857	done
1858}
1859
1860#
1861# Verify a given hotspare disk is inuse or avail
1862#
1863# Return 0 is pool/disk matches expected state, 1 otherwise
1864#
1865function check_hotspare_state # pool disk state{inuse,avail}
1866{
1867	typeset pool=$1
1868	typeset disk=${2#$DEV_DSKDIR/}
1869	typeset state=$3
1870
1871	cur_state=$(get_device_state $pool $disk "spares")
1872
1873	[ $state = $cur_state ]
1874}
1875
1876#
1877# Wait until a hotspare transitions to a given state or times out.
1878#
1879# Return 0 when  pool/disk matches expected state, 1 on timeout.
1880#
1881function wait_hotspare_state # pool disk state timeout
1882{
1883	typeset pool=$1
1884	typeset disk=${2#*$DEV_DSKDIR/}
1885	typeset state=$3
1886	typeset timeout=${4:-60}
1887	typeset -i i=0
1888
1889	while [[ $i -lt $timeout ]]; do
1890		if check_hotspare_state $pool $disk $state; then
1891			return 0
1892		fi
1893
1894		i=$((i+1))
1895		sleep 1
1896	done
1897
1898	return 1
1899}
1900
1901#
1902# Verify a given vdev disk is inuse or avail
1903#
1904# Return 0 is pool/disk matches expected state, 1 otherwise
1905#
1906function check_vdev_state # pool disk state{online,offline,unavail,removed}
1907{
1908	typeset pool=$1
1909	typeset disk=${2#*$DEV_DSKDIR/}
1910	typeset state=$3
1911
1912	cur_state=$(get_device_state $pool $disk)
1913
1914	[ $state = $cur_state ]
1915}
1916
1917#
1918# Wait until a vdev transitions to a given state or times out.
1919#
1920# Return 0 when  pool/disk matches expected state, 1 on timeout.
1921#
1922function wait_vdev_state # pool disk state timeout
1923{
1924	typeset pool=$1
1925	typeset disk=${2#*$DEV_DSKDIR/}
1926	typeset state=$3
1927	typeset timeout=${4:-60}
1928	typeset -i i=0
1929
1930	while [[ $i -lt $timeout ]]; do
1931		if check_vdev_state $pool $disk $state; then
1932			return 0
1933		fi
1934
1935		i=$((i+1))
1936		sleep 1
1937	done
1938
1939	return 1
1940}
1941
1942#
1943# Check the output of 'zpool status -v <pool>',
1944# and to see if the content of <token> contain the <keyword> specified.
1945#
1946# Return 0 is contain, 1 otherwise
1947#
1948function check_pool_status # pool token keyword <verbose>
1949{
1950	typeset pool=$1
1951	typeset token=$2
1952	typeset keyword=$3
1953	typeset verbose=${4:-false}
1954
1955	scan=$(zpool status -v "$pool" 2>/dev/null | awk -v token="$token:" '$1==token')
1956	if [[ $verbose == true ]]; then
1957		log_note $scan
1958	fi
1959	echo $scan | grep -qi "$keyword"
1960}
1961
1962#
1963# The following functions are instance of check_pool_status()
1964#	is_pool_resilvering - to check if the pool resilver is in progress
1965#	is_pool_resilvered - to check if the pool resilver is completed
1966#	is_pool_scrubbing - to check if the pool scrub is in progress
1967#	is_pool_scrubbed - to check if the pool scrub is completed
1968#	is_pool_scrub_stopped - to check if the pool scrub is stopped
1969#	is_pool_scrub_paused - to check if the pool scrub has paused
1970#	is_pool_removing - to check if the pool removing is a vdev
1971#	is_pool_removed - to check if the pool remove is completed
1972#	is_pool_discarding - to check if the pool checkpoint is being discarded
1973#	is_pool_replacing - to check if the pool is performing a replacement
1974#
1975function is_pool_resilvering #pool <verbose>
1976{
1977	check_pool_status "$1" "scan" \
1978	    "resilver[ ()0-9A-Za-z:_-]* in progress since" $2
1979}
1980
1981function is_pool_resilvered #pool <verbose>
1982{
1983	check_pool_status "$1" "scan" "resilvered " $2
1984}
1985
1986function is_pool_scrubbing #pool <verbose>
1987{
1988	check_pool_status "$1" "scan" "scrub in progress since " $2
1989}
1990
1991function is_pool_error_scrubbing #pool <verbose>
1992{
1993	check_pool_status "$1" "scrub" "error scrub in progress since " $2
1994	return $?
1995}
1996
1997function is_pool_scrubbed #pool <verbose>
1998{
1999	check_pool_status "$1" "scan" "scrub repaired" $2
2000}
2001
2002function is_pool_scrub_stopped #pool <verbose>
2003{
2004	check_pool_status "$1" "scan" "scrub canceled" $2
2005}
2006
2007function is_pool_error_scrub_stopped #pool <verbose>
2008{
2009	check_pool_status "$1" "scrub" "error scrub canceled on " $2
2010	return $?
2011}
2012
2013function is_pool_scrub_paused #pool <verbose>
2014{
2015	check_pool_status "$1" "scan" "scrub paused since " $2
2016}
2017
2018function is_pool_error_scrub_paused #pool <verbose>
2019{
2020	check_pool_status "$1" "scrub" "error scrub paused since " $2
2021	return $?
2022}
2023
2024function is_pool_removing #pool
2025{
2026	check_pool_status "$1" "remove" "in progress since "
2027}
2028
2029function is_pool_removed #pool
2030{
2031	check_pool_status "$1" "remove" "completed on"
2032}
2033
2034function is_pool_discarding #pool
2035{
2036	check_pool_status "$1" "checkpoint" "discarding"
2037}
2038function is_pool_replacing #pool
2039{
2040	zpool status "$1" | grep -qE 'replacing-[0-9]+'
2041}
2042
2043function wait_for_degraded
2044{
2045	typeset pool=$1
2046	typeset timeout=${2:-30}
2047	typeset t0=$SECONDS
2048
2049	while :; do
2050		[[ $(get_pool_prop health $pool) == "DEGRADED" ]] && break
2051		log_note "$pool is not yet degraded."
2052		sleep 1
2053		if ((SECONDS - t0 > $timeout)); then
2054			log_note "$pool not degraded after $timeout seconds."
2055			return 1
2056		fi
2057	done
2058
2059	return 0
2060}
2061
2062#
2063# Use create_pool()/destroy_pool() to clean up the information in
2064# in the given disk to avoid slice overlapping.
2065#
2066function cleanup_devices #vdevs
2067{
2068	typeset pool="foopool$$"
2069
2070	for vdev in $@; do
2071		zero_partitions $vdev
2072	done
2073
2074	poolexists $pool && destroy_pool $pool
2075	create_pool $pool $@
2076	destroy_pool $pool
2077
2078	return 0
2079}
2080
2081#/**
2082# A function to find and locate free disks on a system or from given
2083# disks as the parameter. It works by locating disks that are in use
2084# as swap devices and dump devices, and also disks listed in /etc/vfstab
2085#
2086# $@ given disks to find which are free, default is all disks in
2087# the test system
2088#
2089# @return a string containing the list of available disks
2090#*/
2091function find_disks
2092{
2093	# Trust provided list, no attempt is made to locate unused devices.
2094	if is_linux || is_freebsd; then
2095		echo "$@"
2096		return
2097	fi
2098
2099
2100	sfi=/tmp/swaplist.$$
2101	dmpi=/tmp/dumpdev.$$
2102	max_finddisksnum=${MAX_FINDDISKSNUM:-6}
2103
2104	swap -l > $sfi
2105	dumpadm > $dmpi 2>/dev/null
2106
2107	disks=${@:-$(echo "" | format -e 2>/dev/null | awk '
2108BEGIN { FS="."; }
2109
2110/^Specify disk/{
2111	searchdisks=0;
2112}
2113
2114{
2115	if (searchdisks && $2 !~ "^$"){
2116		split($2,arr," ");
2117		print arr[1];
2118	}
2119}
2120
2121/^AVAILABLE DISK SELECTIONS:/{
2122	searchdisks=1;
2123}
2124')}
2125
2126	unused=""
2127	for disk in $disks; do
2128	# Check for mounted
2129		grep -q "${disk}[sp]" /etc/mnttab && continue
2130	# Check for swap
2131		grep -q "${disk}[sp]" $sfi && continue
2132	# check for dump device
2133		grep -q "${disk}[sp]" $dmpi && continue
2134	# check to see if this disk hasn't been explicitly excluded
2135	# by a user-set environment variable
2136		echo "${ZFS_HOST_DEVICES_IGNORE}" | grep -q "${disk}" && continue
2137		unused_candidates="$unused_candidates $disk"
2138	done
2139	rm $sfi $dmpi
2140
2141# now just check to see if those disks do actually exist
2142# by looking for a device pointing to the first slice in
2143# each case. limit the number to max_finddisksnum
2144	count=0
2145	for disk in $unused_candidates; do
2146		if is_disk_device $DEV_DSKDIR/${disk}s0 && \
2147		    [ $count -lt $max_finddisksnum ]; then
2148			unused="$unused $disk"
2149			# do not impose limit if $@ is provided
2150			[[ -z $@ ]] && ((count = count + 1))
2151		fi
2152	done
2153
2154# finally, return our disk list
2155	echo $unused
2156}
2157
2158function add_user_freebsd #<group_name> <user_name> <basedir>
2159{
2160	typeset group=$1
2161	typeset user=$2
2162	typeset basedir=$3
2163
2164	# Check to see if the user exists.
2165	if id $user > /dev/null 2>&1; then
2166		return 0
2167	fi
2168
2169	# Assign 1000 as the base uid
2170	typeset -i uid=1000
2171	while true; do
2172		pw useradd -u $uid -g $group -d $basedir/$user -m -n $user
2173		case $? in
2174			0) break ;;
2175			# The uid is not unique
2176			65) ((uid += 1)) ;;
2177			*) return 1 ;;
2178		esac
2179		if [[ $uid == 65000 ]]; then
2180			log_fail "No user id available under 65000 for $user"
2181		fi
2182	done
2183
2184	# Silence MOTD
2185	touch $basedir/$user/.hushlogin
2186
2187	return 0
2188}
2189
2190#
2191# Delete the specified user.
2192#
2193# $1 login name
2194#
2195function del_user_freebsd #<logname>
2196{
2197	typeset user=$1
2198
2199	if id $user > /dev/null 2>&1; then
2200		log_must pw userdel $user
2201	fi
2202
2203	return 0
2204}
2205
2206#
2207# Select valid gid and create specified group.
2208#
2209# $1 group name
2210#
2211function add_group_freebsd #<group_name>
2212{
2213	typeset group=$1
2214
2215	# See if the group already exists.
2216	if pw groupshow $group >/dev/null 2>&1; then
2217		return 0
2218	fi
2219
2220	# Assign 1000 as the base gid
2221	typeset -i gid=1000
2222	while true; do
2223		pw groupadd -g $gid -n $group > /dev/null 2>&1
2224		case $? in
2225			0) return 0 ;;
2226			# The gid is not  unique
2227			65) ((gid += 1)) ;;
2228			*) return 1 ;;
2229		esac
2230		if [[ $gid == 65000 ]]; then
2231			log_fail "No user id available under 65000 for $group"
2232		fi
2233	done
2234}
2235
2236#
2237# Delete the specified group.
2238#
2239# $1 group name
2240#
2241function del_group_freebsd #<group_name>
2242{
2243	typeset group=$1
2244
2245	pw groupdel -n $group > /dev/null 2>&1
2246	case $? in
2247		# Group does not exist, or was deleted successfully.
2248		0|6|65) return 0 ;;
2249		# Name already exists as a group name
2250		9) log_must pw groupdel $group ;;
2251		*) return 1 ;;
2252	esac
2253
2254	return 0
2255}
2256
2257function add_user_illumos #<group_name> <user_name> <basedir>
2258{
2259	typeset group=$1
2260	typeset user=$2
2261	typeset basedir=$3
2262
2263	log_must useradd -g $group -d $basedir/$user -m $user
2264
2265	return 0
2266}
2267
2268function del_user_illumos #<user_name>
2269{
2270	typeset user=$1
2271
2272	if id $user > /dev/null 2>&1; then
2273		log_must_retry "currently used" 6 userdel $user
2274	fi
2275
2276	return 0
2277}
2278
2279function add_group_illumos #<group_name>
2280{
2281	typeset group=$1
2282
2283	typeset -i gid=100
2284	while true; do
2285		groupadd -g $gid $group > /dev/null 2>&1
2286		case $? in
2287			0) return 0 ;;
2288			# The gid is not  unique
2289			4) ((gid += 1)) ;;
2290			*) return 1 ;;
2291		esac
2292	done
2293}
2294
2295function del_group_illumos #<group_name>
2296{
2297	typeset group=$1
2298
2299	groupmod -n $grp $grp > /dev/null 2>&1
2300	case $? in
2301		# Group does not exist.
2302		6) return 0 ;;
2303		# Name already exists as a group name
2304		9) log_must groupdel $grp ;;
2305		*) return 1 ;;
2306	esac
2307}
2308
2309function add_user_linux #<group_name> <user_name> <basedir>
2310{
2311	typeset group=$1
2312	typeset user=$2
2313	typeset basedir=$3
2314
2315	log_must useradd -g $group -d $basedir/$user -m $user
2316
2317	# Add new users to the same group and the command line utils.
2318	# This allows them to be run out of the original users home
2319	# directory as long as it permissioned to be group readable.
2320	cmd_group=$(stat --format="%G" $(command -v zfs))
2321	log_must usermod -a -G $cmd_group $user
2322
2323	return 0
2324}
2325
2326function del_user_linux #<user_name>
2327{
2328	typeset user=$1
2329
2330	if id $user > /dev/null 2>&1; then
2331		log_must_retry "currently used" 6 userdel $user
2332	fi
2333}
2334
2335function add_group_linux #<group_name>
2336{
2337	typeset group=$1
2338
2339	# Assign 100 as the base gid, a larger value is selected for
2340	# Linux because for many distributions 1000 and under are reserved.
2341	while true; do
2342		groupadd $group > /dev/null 2>&1
2343		case $? in
2344			0) return 0 ;;
2345			*) return 1 ;;
2346		esac
2347	done
2348}
2349
2350function del_group_linux #<group_name>
2351{
2352	typeset group=$1
2353
2354	getent group $group > /dev/null 2>&1
2355	case $? in
2356		# Group does not exist.
2357		2) return 0 ;;
2358		# Name already exists as a group name
2359		0) log_must groupdel $group ;;
2360		*) return 1 ;;
2361	esac
2362
2363	return 0
2364}
2365
2366#
2367# Add specified user to specified group
2368#
2369# $1 group name
2370# $2 user name
2371# $3 base of the homedir (optional)
2372#
2373function add_user #<group_name> <user_name> <basedir>
2374{
2375	typeset group=$1
2376	typeset user=$2
2377	typeset basedir=${3:-"/var/tmp"}
2378
2379	if ((${#group} == 0 || ${#user} == 0)); then
2380		log_fail "group name or user name are not defined."
2381	fi
2382
2383	case "$UNAME" in
2384	FreeBSD)
2385		add_user_freebsd "$group" "$user" "$basedir"
2386		;;
2387	Linux)
2388		add_user_linux "$group" "$user" "$basedir"
2389		;;
2390	*)
2391		add_user_illumos "$group" "$user" "$basedir"
2392		;;
2393	esac
2394
2395	return 0
2396}
2397
2398#
2399# Delete the specified user.
2400#
2401# $1 login name
2402# $2 base of the homedir (optional)
2403#
2404function del_user #<logname> <basedir>
2405{
2406	typeset user=$1
2407	typeset basedir=${2:-"/var/tmp"}
2408
2409	if ((${#user} == 0)); then
2410		log_fail "login name is necessary."
2411	fi
2412
2413	case "$UNAME" in
2414	FreeBSD)
2415		del_user_freebsd "$user"
2416		;;
2417	Linux)
2418		del_user_linux "$user"
2419		;;
2420	*)
2421		del_user_illumos "$user"
2422		;;
2423	esac
2424
2425	[[ -d $basedir/$user ]] && rm -fr $basedir/$user
2426
2427	return 0
2428}
2429
2430#
2431# Select valid gid and create specified group.
2432#
2433# $1 group name
2434#
2435function add_group #<group_name>
2436{
2437	typeset group=$1
2438
2439	if ((${#group} == 0)); then
2440		log_fail "group name is necessary."
2441	fi
2442
2443	case "$UNAME" in
2444	FreeBSD)
2445		add_group_freebsd "$group"
2446		;;
2447	Linux)
2448		add_group_linux "$group"
2449		;;
2450	*)
2451		add_group_illumos "$group"
2452		;;
2453	esac
2454
2455	return 0
2456}
2457
2458#
2459# Delete the specified group.
2460#
2461# $1 group name
2462#
2463function del_group #<group_name>
2464{
2465	typeset group=$1
2466
2467	if ((${#group} == 0)); then
2468		log_fail "group name is necessary."
2469	fi
2470
2471	case "$UNAME" in
2472	FreeBSD)
2473		del_group_freebsd "$group"
2474		;;
2475	Linux)
2476		del_group_linux "$group"
2477		;;
2478	*)
2479		del_group_illumos "$group"
2480		;;
2481	esac
2482
2483	return 0
2484}
2485
2486#
2487# This function will return true if it's safe to destroy the pool passed
2488# as argument 1. It checks for pools based on zvols and files, and also
2489# files contained in a pool that may have a different mountpoint.
2490#
2491function safe_to_destroy_pool { # $1 the pool name
2492
2493	typeset pool=""
2494	typeset DONT_DESTROY=""
2495
2496	# We check that by deleting the $1 pool, we're not
2497	# going to pull the rug out from other pools. Do this
2498	# by looking at all other pools, ensuring that they
2499	# aren't built from files or zvols contained in this pool.
2500
2501	for pool in $(zpool list -H -o name)
2502	do
2503		ALTMOUNTPOOL=""
2504
2505		# this is a list of the top-level directories in each of the
2506		# files that make up the path to the files the pool is based on
2507		FILEPOOL=$(zpool status -v $pool | awk -v pool="/$1/" '$0 ~ pool {print $1}')
2508
2509		# this is a list of the zvols that make up the pool
2510		ZVOLPOOL=$(zpool status -v $pool | awk -v zvols="$ZVOL_DEVDIR/$1$" '$0 ~ zvols {print $1}')
2511
2512		# also want to determine if it's a file-based pool using an
2513		# alternate mountpoint...
2514		POOL_FILE_DIRS=$(zpool status -v $pool | \
2515					awk '/\// {print $1}' | \
2516					awk -F/ '!/dev/ {print $2}')
2517
2518		for pooldir in $POOL_FILE_DIRS
2519		do
2520			OUTPUT=$(zfs list -H -r -o mountpoint $1 | \
2521					awk -v pd="${pooldir}$" '$0 ~ pd {print $1}')
2522
2523			ALTMOUNTPOOL="${ALTMOUNTPOOL}${OUTPUT}"
2524		done
2525
2526
2527		if [ ! -z "$ZVOLPOOL" ]
2528		then
2529			DONT_DESTROY="true"
2530			log_note "Pool $pool is built from $ZVOLPOOL on $1"
2531		fi
2532
2533		if [ ! -z "$FILEPOOL" ]
2534		then
2535			DONT_DESTROY="true"
2536			log_note "Pool $pool is built from $FILEPOOL on $1"
2537		fi
2538
2539		if [ ! -z "$ALTMOUNTPOOL" ]
2540		then
2541			DONT_DESTROY="true"
2542			log_note "Pool $pool is built from $ALTMOUNTPOOL on $1"
2543		fi
2544	done
2545
2546	if [ -z "${DONT_DESTROY}" ]
2547	then
2548		return 0
2549	else
2550		log_note "Warning: it is not safe to destroy $1!"
2551		return 1
2552	fi
2553}
2554
2555#
2556# Verify zfs operation with -p option work as expected
2557# $1 operation, value could be create, clone or rename
2558# $2 dataset type, value could be fs or vol
2559# $3 dataset name
2560# $4 new dataset name
2561#
2562function verify_opt_p_ops
2563{
2564	typeset ops=$1
2565	typeset datatype=$2
2566	typeset dataset=$3
2567	typeset newdataset=$4
2568
2569	if [[ $datatype != "fs" && $datatype != "vol" ]]; then
2570		log_fail "$datatype is not supported."
2571	fi
2572
2573	# check parameters accordingly
2574	case $ops in
2575		create)
2576			newdataset=$dataset
2577			dataset=""
2578			if [[ $datatype == "vol" ]]; then
2579				ops="create -V $VOLSIZE"
2580			fi
2581			;;
2582		clone)
2583			if [[ -z $newdataset ]]; then
2584				log_fail "newdataset should not be empty" \
2585					"when ops is $ops."
2586			fi
2587			log_must datasetexists $dataset
2588			log_must snapexists $dataset
2589			;;
2590		rename)
2591			if [[ -z $newdataset ]]; then
2592				log_fail "newdataset should not be empty" \
2593					"when ops is $ops."
2594			fi
2595			log_must datasetexists $dataset
2596			;;
2597		*)
2598			log_fail "$ops is not supported."
2599			;;
2600	esac
2601
2602	# make sure the upper level filesystem does not exist
2603	destroy_dataset "${newdataset%/*}" "-rRf"
2604
2605	# without -p option, operation will fail
2606	log_mustnot zfs $ops $dataset $newdataset
2607	log_mustnot datasetexists $newdataset ${newdataset%/*}
2608
2609	# with -p option, operation should succeed
2610	log_must zfs $ops -p $dataset $newdataset
2611	block_device_wait
2612
2613	if ! datasetexists $newdataset ; then
2614		log_fail "-p option does not work for $ops"
2615	fi
2616
2617	# when $ops is create or clone, redo the operation still return zero
2618	if [[ $ops != "rename" ]]; then
2619		log_must zfs $ops -p $dataset $newdataset
2620	fi
2621
2622	return 0
2623}
2624
2625#
2626# Get configuration of pool
2627# $1 pool name
2628# $2 config name
2629#
2630function get_config
2631{
2632	typeset pool=$1
2633	typeset config=$2
2634
2635	if ! poolexists "$pool" ; then
2636		return 1
2637	fi
2638	if [ "$(get_pool_prop cachefile "$pool")" = "none" ]; then
2639		zdb -e $pool
2640	else
2641		zdb -C $pool
2642	fi | awk -F: -v cfg="$config:" '$0 ~ cfg {sub(/^'\''/, $2); sub(/'\''$/, $2); print $2}'
2643}
2644
2645#
2646# Privated function. Random select one of items from arguments.
2647#
2648# $1 count
2649# $2-n string
2650#
2651function _random_get
2652{
2653	typeset cnt=$1
2654	shift
2655
2656	typeset str="$@"
2657	typeset -i ind
2658	((ind = RANDOM % cnt + 1))
2659
2660	echo "$str" | cut -f $ind -d ' '
2661}
2662
2663#
2664# Random select one of item from arguments which include NONE string
2665#
2666function random_get_with_non
2667{
2668	typeset -i cnt=$#
2669	((cnt =+ 1))
2670
2671	_random_get "$cnt" "$@"
2672}
2673
2674#
2675# Random select one of item from arguments which doesn't include NONE string
2676#
2677function random_get
2678{
2679	_random_get "$#" "$@"
2680}
2681
2682#
2683# The function will generate a dataset name with specific length
2684# $1, the length of the name
2685# $2, the base string to construct the name
2686#
2687function gen_dataset_name
2688{
2689	typeset -i len=$1
2690	typeset basestr="$2"
2691	typeset -i baselen=${#basestr}
2692	typeset -i iter=0
2693	typeset l_name=""
2694
2695	if ((len % baselen == 0)); then
2696		((iter = len / baselen))
2697	else
2698		((iter = len / baselen + 1))
2699	fi
2700	while ((iter > 0)); do
2701		l_name="${l_name}$basestr"
2702
2703		((iter -= 1))
2704	done
2705
2706	echo $l_name
2707}
2708
2709#
2710# Get cksum tuple of dataset
2711# $1 dataset name
2712#
2713# sample zdb output:
2714# Dataset data/test [ZPL], ID 355, cr_txg 2413856, 31.0K, 7 objects, rootbp
2715# DVA[0]=<0:803046400:200> DVA[1]=<0:81199000:200> [L0 DMU objset] fletcher4
2716# lzjb LE contiguous unique double size=800L/200P birth=2413856L/2413856P
2717# fill=7 cksum=11ce125712:643a9c18ee2:125e25238fca0:254a3f74b59744
2718function datasetcksum
2719{
2720	typeset cksum
2721	sync
2722	sync_all_pools
2723	zdb -vvv $1 | awk -F= -v ds="^Dataset $1 "'\\[' '$0 ~ ds && /cksum/ {print $7}'
2724}
2725
2726#
2727# Get the given disk/slice state from the specific field of the pool
2728#
2729function get_device_state #pool disk field("", "spares","logs")
2730{
2731	typeset pool=$1
2732	typeset disk=${2#$DEV_DSKDIR/}
2733	typeset field=${3:-$pool}
2734
2735	zpool status -v "$pool" 2>/dev/null | \
2736		awk -v device=$disk -v pool=$pool -v field=$field \
2737		'BEGIN {startconfig=0; startfield=0; }
2738		/config:/ {startconfig=1}
2739		(startconfig==1) && ($1==field) {startfield=1; next;}
2740		(startfield==1) && ($1==device) {print $2; exit;}
2741		(startfield==1) &&
2742		($1==field || $1 ~ "^spares$" || $1 ~ "^logs$") {startfield=0}'
2743}
2744
2745#
2746# get the root filesystem name if it's zfsroot system.
2747#
2748# return: root filesystem name
2749function get_rootfs
2750{
2751	typeset rootfs=""
2752
2753	if is_freebsd; then
2754		rootfs=$(mount -p | awk '$2 == "/" && $3 == "zfs" {print $1}')
2755	elif ! is_linux; then
2756		rootfs=$(awk '$2 == "/" && $3 == "zfs" {print $1}' \
2757			/etc/mnttab)
2758	fi
2759	if [[ -z "$rootfs" ]]; then
2760		log_fail "Can not get rootfs"
2761	fi
2762	if datasetexists $rootfs; then
2763		echo $rootfs
2764	else
2765		log_fail "This is not a zfsroot system."
2766	fi
2767}
2768
2769#
2770# get the rootfs's pool name
2771# return:
2772#       rootpool name
2773#
2774function get_rootpool
2775{
2776	typeset rootfs=$(get_rootfs)
2777	echo ${rootfs%%/*}
2778}
2779
2780#
2781# To verify if the require numbers of disks is given
2782#
2783function verify_disk_count
2784{
2785	typeset -i min=${2:-1}
2786
2787	typeset -i count=$(echo "$1" | wc -w)
2788
2789	if ((count < min)); then
2790		log_untested "A minimum of $min disks is required to run." \
2791			" You specified $count disk(s)"
2792	fi
2793}
2794
2795function ds_is_volume
2796{
2797	typeset type=$(get_prop type $1)
2798	[ $type = "volume" ]
2799}
2800
2801function ds_is_filesystem
2802{
2803	typeset type=$(get_prop type $1)
2804	[ $type = "filesystem" ]
2805}
2806
2807#
2808# Check if Trusted Extensions are installed and enabled
2809#
2810function is_te_enabled
2811{
2812	svcs -H -o state labeld 2>/dev/null | grep -q "enabled"
2813}
2814
2815# Return the number of CPUs (cross-platform)
2816function get_num_cpus
2817{
2818	if is_linux ; then
2819		grep -c '^processor' /proc/cpuinfo
2820	elif is_freebsd; then
2821		sysctl -n kern.smp.cpus
2822	else
2823		psrinfo | wc -l
2824	fi
2825}
2826
2827# Utility function to determine if a system has multiple cpus.
2828function is_mp
2829{
2830	[[ $(get_num_cpus) -gt 1 ]]
2831}
2832
2833function get_cpu_freq
2834{
2835	if is_linux; then
2836		lscpu | awk '/CPU MHz/ { print $3 }'
2837	elif is_freebsd; then
2838		sysctl -n hw.clockrate
2839	else
2840		psrinfo -v 0 | awk '/processor operates at/ {print $6}'
2841	fi
2842}
2843
2844# Run the given command as the user provided.
2845function user_run
2846{
2847	typeset user=$1
2848	shift
2849
2850	log_note "user: $user"
2851	log_note "cmd: $*"
2852
2853	typeset out=$TEST_BASE_DIR/out
2854	typeset err=$TEST_BASE_DIR/err
2855
2856	sudo -Eu $user env PATH="$PATH" ksh <<<"$*" >$out 2>$err
2857	typeset res=$?
2858	log_note "out: $(<$out)"
2859	log_note "err: $(<$err)"
2860	return $res
2861}
2862
2863#
2864# Check if the pool contains the specified vdevs
2865#
2866# $1 pool
2867# $2..n <vdev> ...
2868#
2869# Return 0 if the vdevs are contained in the pool, 1 if any of the specified
2870# vdevs is not in the pool, and 2 if pool name is missing.
2871#
2872function vdevs_in_pool
2873{
2874	typeset pool=$1
2875	typeset vdev
2876
2877	if [[ -z $pool ]]; then
2878		log_note "Missing pool name."
2879		return 2
2880	fi
2881
2882	shift
2883
2884	# We could use 'zpool list' to only get the vdevs of the pool but we
2885	# can't reference a mirror/raidz vdev using its ID (i.e mirror-0),
2886	# therefore we use the 'zpool status' output.
2887	typeset tmpfile=$(mktemp)
2888	zpool status -v "$pool" | grep -A 1000 "config:" >$tmpfile
2889	for vdev in "$@"; do
2890		grep -wq ${vdev##*/} $tmpfile || return 1
2891	done
2892
2893	rm -f $tmpfile
2894	return 0
2895}
2896
2897function get_max
2898{
2899	typeset -l i max=$1
2900	shift
2901
2902	for i in "$@"; do
2903		max=$((max > i ? max : i))
2904	done
2905
2906	echo $max
2907}
2908
2909# Write data that can be compressed into a directory
2910function write_compressible
2911{
2912	typeset dir=$1
2913	typeset megs=$2
2914	typeset nfiles=${3:-1}
2915	typeset bs=${4:-1024k}
2916	typeset fname=${5:-file}
2917
2918	[[ -d $dir ]] || log_fail "No directory: $dir"
2919
2920	# Under Linux fio is not currently used since its behavior can
2921	# differ significantly across versions.  This includes missing
2922	# command line options and cases where the --buffer_compress_*
2923	# options fail to behave as expected.
2924	if is_linux; then
2925		typeset file_bytes=$(to_bytes $megs)
2926		typeset bs_bytes=4096
2927		typeset blocks=$(($file_bytes / $bs_bytes))
2928
2929		for (( i = 0; i < $nfiles; i++ )); do
2930			truncate -s $file_bytes $dir/$fname.$i
2931
2932			# Write every third block to get 66% compression.
2933			for (( j = 0; j < $blocks; j += 3 )); do
2934				dd if=/dev/urandom of=$dir/$fname.$i \
2935				    seek=$j bs=$bs_bytes count=1 \
2936				    conv=notrunc >/dev/null 2>&1
2937			done
2938		done
2939	else
2940		command -v fio > /dev/null || log_unsupported "fio missing"
2941		log_must eval fio \
2942		    --name=job \
2943		    --fallocate=0 \
2944		    --minimal \
2945		    --randrepeat=0 \
2946		    --buffer_compress_percentage=66 \
2947		    --buffer_compress_chunk=4096 \
2948		    --directory="$dir" \
2949		    --numjobs="$nfiles" \
2950		    --nrfiles="$nfiles" \
2951		    --rw=write \
2952		    --bs="$bs" \
2953		    --filesize="$megs" \
2954		    "--filename_format='$fname.\$jobnum' >/dev/null"
2955	fi
2956}
2957
2958function get_objnum
2959{
2960	typeset pathname=$1
2961	typeset objnum
2962
2963	[[ -e $pathname ]] || log_fail "No such file or directory: $pathname"
2964	if is_freebsd; then
2965		objnum=$(stat -f "%i" $pathname)
2966	else
2967		objnum=$(stat -c %i $pathname)
2968	fi
2969	echo $objnum
2970}
2971
2972#
2973# Sync data to the pool
2974#
2975# $1 pool name
2976# $2 boolean to force uberblock (and config including zpool cache file) update
2977#
2978function sync_pool #pool <force>
2979{
2980	typeset pool=${1:-$TESTPOOL}
2981	typeset force=${2:-false}
2982
2983	if [[ $force == true ]]; then
2984		log_must zpool sync -f $pool
2985	else
2986		log_must zpool sync $pool
2987	fi
2988
2989	return 0
2990}
2991
2992#
2993# Sync all pools
2994#
2995# $1 boolean to force uberblock (and config including zpool cache file) update
2996#
2997function sync_all_pools #<force>
2998{
2999	typeset force=${1:-false}
3000
3001	if [[ $force == true ]]; then
3002		log_must zpool sync -f
3003	else
3004		log_must zpool sync
3005	fi
3006
3007	return 0
3008}
3009
3010#
3011# Wait for zpool 'freeing' property drops to zero.
3012#
3013# $1 pool name
3014#
3015function wait_freeing #pool
3016{
3017	typeset pool=${1:-$TESTPOOL}
3018	while true; do
3019		[[ "0" == "$(zpool list -Ho freeing $pool)" ]] && break
3020		log_must sleep 1
3021	done
3022}
3023
3024#
3025# Wait for every device replace operation to complete
3026#
3027# $1 pool name
3028# $2 timeout
3029#
3030function wait_replacing #pool timeout
3031{
3032	typeset timeout=${2:-300}
3033	typeset pool=${1:-$TESTPOOL}
3034	for (( timer = 0; timer < $timeout; timer++ )); do
3035		is_pool_replacing $pool || break;
3036		sleep 1;
3037	done
3038}
3039
3040# Wait for a pool to be scrubbed
3041#
3042# $1 pool name
3043# $2 timeout
3044#
3045function wait_scrubbed #pool timeout
3046{
3047       typeset timeout=${2:-300}
3048       typeset pool=${1:-$TESTPOOL}
3049       for (( timer = 0; timer < $timeout; timer++ )); do
3050               is_pool_scrubbed $pool && break;
3051               sleep 1;
3052       done
3053}
3054
3055# Backup the zed.rc in our test directory so that we can edit it for our test.
3056#
3057# Returns: Backup file name.  You will need to pass this to zed_rc_restore().
3058function zed_rc_backup
3059{
3060	zedrc_backup="$(mktemp)"
3061	cp $ZEDLET_DIR/zed.rc $zedrc_backup
3062	echo $zedrc_backup
3063}
3064
3065function zed_rc_restore
3066{
3067	mv $1 $ZEDLET_DIR/zed.rc
3068}
3069
3070#
3071# Setup custom environment for the ZED.
3072#
3073# $@ Optional list of zedlets to run under zed.
3074function zed_setup
3075{
3076	if ! is_linux; then
3077		log_unsupported "No zed on $UNAME"
3078	fi
3079
3080	if [[ ! -d $ZEDLET_DIR ]]; then
3081		log_must mkdir $ZEDLET_DIR
3082	fi
3083
3084	if [[ ! -e $VDEVID_CONF ]]; then
3085		log_must touch $VDEVID_CONF
3086	fi
3087
3088	if [[ -e $VDEVID_CONF_ETC ]]; then
3089		log_fail "Must not have $VDEVID_CONF_ETC file present on system"
3090	fi
3091	EXTRA_ZEDLETS=$@
3092
3093	# Create a symlink for /etc/zfs/vdev_id.conf file.
3094	log_must ln -s $VDEVID_CONF $VDEVID_CONF_ETC
3095
3096	# Setup minimal ZED configuration.  Individual test cases should
3097	# add additional ZEDLETs as needed for their specific test.
3098	log_must cp ${ZEDLET_ETC_DIR}/zed.rc $ZEDLET_DIR
3099	log_must cp ${ZEDLET_ETC_DIR}/zed-functions.sh $ZEDLET_DIR
3100
3101	# Scripts must only be user writable.
3102	if [[ -n "$EXTRA_ZEDLETS" ]] ; then
3103		saved_umask=$(umask)
3104		log_must umask 0022
3105		for i in $EXTRA_ZEDLETS ; do
3106			log_must cp ${ZEDLET_LIBEXEC_DIR}/$i $ZEDLET_DIR
3107		done
3108		log_must umask $saved_umask
3109	fi
3110
3111	# Customize the zed.rc file to enable the full debug log.
3112	log_must sed -i '/\#ZED_DEBUG_LOG=.*/d' $ZEDLET_DIR/zed.rc
3113	echo "ZED_DEBUG_LOG=$ZED_DEBUG_LOG" >>$ZEDLET_DIR/zed.rc
3114
3115}
3116
3117#
3118# Cleanup custom ZED environment.
3119#
3120# $@ Optional list of zedlets to remove from our test zed.d directory.
3121function zed_cleanup
3122{
3123	if ! is_linux; then
3124		return
3125	fi
3126
3127	for extra_zedlet; do
3128		log_must rm -f ${ZEDLET_DIR}/$extra_zedlet
3129	done
3130	log_must rm -fd ${ZEDLET_DIR}/zed.rc ${ZEDLET_DIR}/zed-functions.sh ${ZEDLET_DIR}/all-syslog.sh ${ZEDLET_DIR}/all-debug.sh ${ZEDLET_DIR}/state \
3131	                $ZED_LOG $ZED_DEBUG_LOG $VDEVID_CONF_ETC $VDEVID_CONF \
3132	                $ZEDLET_DIR
3133}
3134
3135#
3136# Check if ZED is currently running; if so, returns PIDs
3137#
3138function zed_check
3139{
3140	if ! is_linux; then
3141		return
3142	fi
3143	zedpids="$(pgrep -x zed)"
3144	zedpids2="$(pgrep -x lt-zed)"
3145	echo ${zedpids} ${zedpids2}
3146}
3147
3148#
3149# Check if ZED is currently running, if not start ZED.
3150#
3151function zed_start
3152{
3153	if ! is_linux; then
3154		return
3155	fi
3156
3157	# ZEDLET_DIR=/var/tmp/zed
3158	if [[ ! -d $ZEDLET_DIR ]]; then
3159		log_must mkdir $ZEDLET_DIR
3160	fi
3161
3162	# Verify the ZED is not already running.
3163	zedpids=$(zed_check)
3164	if [ -n "$zedpids" ]; then
3165		# We never, ever, really want it to just keep going if zed
3166		# is already running - usually this implies our test cases
3167		# will break very strangely because whatever we wanted to
3168		# configure zed for won't be listening to our changes in the
3169		# tmpdir
3170		log_fail "ZED already running - ${zedpids}"
3171	else
3172		log_note "Starting ZED"
3173		# run ZED in the background and redirect foreground logging
3174		# output to $ZED_LOG.
3175		log_must truncate -s 0 $ZED_DEBUG_LOG
3176		log_must eval "zed -vF -d $ZEDLET_DIR -P $PATH" \
3177		    "-s $ZEDLET_DIR/state -j 1 2>$ZED_LOG &"
3178	fi
3179
3180	return 0
3181}
3182
3183#
3184# Kill ZED process
3185#
3186function zed_stop
3187{
3188	if ! is_linux; then
3189		return ""
3190	fi
3191
3192	log_note "Stopping ZED"
3193	while true; do
3194		zedpids=$(zed_check)
3195		[ ! -n "$zedpids" ] && break
3196
3197		log_must kill $zedpids
3198		sleep 1
3199	done
3200	return 0
3201}
3202
3203#
3204# Drain all zevents
3205#
3206function zed_events_drain
3207{
3208	while [ $(zpool events -H | wc -l) -ne 0 ]; do
3209		sleep 1
3210		zpool events -c >/dev/null
3211	done
3212}
3213
3214# Set a variable in zed.rc to something, un-commenting it in the process.
3215#
3216# $1 variable
3217# $2 value
3218function zed_rc_set
3219{
3220	var="$1"
3221	val="$2"
3222	# Remove the line
3223	cmd="'/$var/d'"
3224	eval sed -i $cmd $ZEDLET_DIR/zed.rc
3225
3226	# Add it at the end
3227	echo "$var=$val" >> $ZEDLET_DIR/zed.rc
3228}
3229
3230
3231#
3232# Check is provided device is being active used as a swap device.
3233#
3234function is_swap_inuse
3235{
3236	typeset device=$1
3237
3238	if [[ -z $device ]] ; then
3239		log_note "No device specified."
3240		return 1
3241	fi
3242
3243	case "$UNAME" in
3244	Linux)
3245		swapon -s | grep -wq $(readlink -f $device)
3246		;;
3247	FreeBSD)
3248		swapctl -l | grep -wq $device
3249		;;
3250	*)
3251		swap -l | grep -wq $device
3252		;;
3253	esac
3254}
3255
3256#
3257# Setup a swap device using the provided device.
3258#
3259function swap_setup
3260{
3261	typeset swapdev=$1
3262
3263	case "$UNAME" in
3264	Linux)
3265		log_must eval "mkswap $swapdev > /dev/null 2>&1"
3266		log_must swapon $swapdev
3267		;;
3268	FreeBSD)
3269		log_must swapctl -a $swapdev
3270		;;
3271	*)
3272    log_must swap -a $swapdev
3273		;;
3274	esac
3275
3276	return 0
3277}
3278
3279#
3280# Cleanup a swap device on the provided device.
3281#
3282function swap_cleanup
3283{
3284	typeset swapdev=$1
3285
3286	if is_swap_inuse $swapdev; then
3287		if is_linux; then
3288			log_must swapoff $swapdev
3289		elif is_freebsd; then
3290			log_must swapoff $swapdev
3291		else
3292			log_must swap -d $swapdev
3293		fi
3294	fi
3295
3296	return 0
3297}
3298
3299#
3300# Set a global system tunable (64-bit value)
3301#
3302# $1 tunable name (use a NAME defined in tunables.cfg)
3303# $2 tunable values
3304#
3305function set_tunable64
3306{
3307	set_tunable_impl "$1" "$2" Z
3308}
3309
3310#
3311# Set a global system tunable (32-bit value)
3312#
3313# $1 tunable name (use a NAME defined in tunables.cfg)
3314# $2 tunable values
3315#
3316function set_tunable32
3317{
3318	set_tunable_impl "$1" "$2" W
3319}
3320
3321function set_tunable_impl
3322{
3323	typeset name="$1"
3324	typeset value="$2"
3325	typeset mdb_cmd="$3"
3326
3327	eval "typeset tunable=\$$name"
3328	case "$tunable" in
3329	UNSUPPORTED)
3330		log_unsupported "Tunable '$name' is unsupported on $UNAME"
3331		;;
3332	"")
3333		log_fail "Tunable '$name' must be added to tunables.cfg"
3334		;;
3335	*)
3336		;;
3337	esac
3338
3339	[[ -z "$value" ]] && return 1
3340	[[ -z "$mdb_cmd" ]] && return 1
3341
3342	case "$UNAME" in
3343	Linux)
3344		typeset zfs_tunables="/sys/module/zfs/parameters"
3345		echo "$value" >"$zfs_tunables/$tunable"
3346		;;
3347	FreeBSD)
3348		sysctl vfs.zfs.$tunable=$value
3349		;;
3350	SunOS)
3351		echo "${tunable}/${mdb_cmd}0t${value}" | mdb -kw
3352		;;
3353	esac
3354}
3355
3356function save_tunable
3357{
3358	[[ ! -d $TEST_BASE_DIR ]] && return 1
3359	[[ -e $TEST_BASE_DIR/tunable-$1 ]] && return 2
3360	echo "$(get_tunable """$1""")" > "$TEST_BASE_DIR"/tunable-"$1"
3361}
3362
3363function restore_tunable
3364{
3365	[[ ! -e $TEST_BASE_DIR/tunable-$1 ]] && return 1
3366	val="$(cat $TEST_BASE_DIR/tunable-"""$1""")"
3367	set_tunable64 "$1" "$val"
3368	rm $TEST_BASE_DIR/tunable-$1
3369}
3370
3371#
3372# Get a global system tunable
3373#
3374# $1 tunable name (use a NAME defined in tunables.cfg)
3375#
3376function get_tunable
3377{
3378	get_tunable_impl "$1"
3379}
3380
3381function get_tunable_impl
3382{
3383	typeset name="$1"
3384	typeset module="${2:-zfs}"
3385	typeset check_only="$3"
3386
3387	eval "typeset tunable=\$$name"
3388	case "$tunable" in
3389	UNSUPPORTED)
3390		if [ -z "$check_only" ] ; then
3391			log_unsupported "Tunable '$name' is unsupported on $UNAME"
3392		else
3393			return 1
3394		fi
3395		;;
3396	"")
3397		if [ -z "$check_only" ] ; then
3398			log_fail "Tunable '$name' must be added to tunables.cfg"
3399		else
3400			return 1
3401		fi
3402		;;
3403	*)
3404		;;
3405	esac
3406
3407	case "$UNAME" in
3408	Linux)
3409		typeset zfs_tunables="/sys/module/$module/parameters"
3410		cat $zfs_tunables/$tunable
3411		;;
3412	FreeBSD)
3413		sysctl -n vfs.zfs.$tunable
3414		;;
3415	SunOS)
3416		[[ "$module" -eq "zfs" ]] || return 1
3417		;;
3418	esac
3419}
3420
3421# Does a tunable exist?
3422#
3423# $1: Tunable name
3424function tunable_exists
3425{
3426	get_tunable_impl $1 "zfs" 1
3427}
3428
3429#
3430# Compute MD5 digest for given file or stdin if no file given.
3431# Note: file path must not contain spaces
3432#
3433function md5digest
3434{
3435	typeset file=$1
3436
3437	case "$UNAME" in
3438	FreeBSD)
3439		md5 -q $file
3440		;;
3441	*)
3442		typeset sum _
3443		read -r sum _ < <(md5sum -b $file)
3444		echo $sum
3445		;;
3446	esac
3447}
3448
3449#
3450# Compute SHA256 digest for given file or stdin if no file given.
3451# Note: file path must not contain spaces
3452#
3453function sha256digest
3454{
3455	typeset file=$1
3456
3457	case "$UNAME" in
3458	FreeBSD)
3459		sha256 -q $file
3460		;;
3461	*)
3462		typeset sum _
3463		read -r sum _ < <(sha256sum -b $file)
3464		echo $sum
3465		;;
3466	esac
3467}
3468
3469function new_fs #<args>
3470{
3471	case "$UNAME" in
3472	FreeBSD)
3473		newfs "$@"
3474		;;
3475	*)
3476		echo y | newfs -v "$@"
3477		;;
3478	esac
3479}
3480
3481function stat_size #<path>
3482{
3483	typeset path=$1
3484
3485	case "$UNAME" in
3486	FreeBSD)
3487		stat -f %z "$path"
3488		;;
3489	*)
3490		stat -c %s "$path"
3491		;;
3492	esac
3493}
3494
3495function stat_mtime #<path>
3496{
3497	typeset path=$1
3498
3499	case "$UNAME" in
3500	FreeBSD)
3501		stat -f %m "$path"
3502		;;
3503	*)
3504		stat -c %Y "$path"
3505		;;
3506	esac
3507}
3508
3509function stat_ctime #<path>
3510{
3511	typeset path=$1
3512
3513	case "$UNAME" in
3514	FreeBSD)
3515		stat -f %c "$path"
3516		;;
3517	*)
3518		stat -c %Z "$path"
3519		;;
3520	esac
3521}
3522
3523function stat_crtime #<path>
3524{
3525	typeset path=$1
3526
3527	case "$UNAME" in
3528	FreeBSD)
3529		stat -f %B "$path"
3530		;;
3531	*)
3532		stat -c %W "$path"
3533		;;
3534	esac
3535}
3536
3537function stat_generation #<path>
3538{
3539	typeset path=$1
3540
3541	case "$UNAME" in
3542	Linux)
3543		getversion "${path}"
3544		;;
3545	*)
3546		stat -f %v "${path}"
3547		;;
3548	esac
3549}
3550
3551# Run a command as if it was being run in a TTY.
3552#
3553# Usage:
3554#
3555#    faketty command
3556#
3557function faketty
3558{
3559    if is_freebsd; then
3560        script -q /dev/null env "$@"
3561    else
3562        script --return --quiet -c "$*" /dev/null
3563    fi
3564}
3565
3566#
3567# Produce a random permutation of the integers in a given range (inclusive).
3568#
3569function range_shuffle # begin end
3570{
3571	typeset -i begin=$1
3572	typeset -i end=$2
3573
3574	seq ${begin} ${end} | sort -R
3575}
3576
3577#
3578# Cross-platform xattr helpers
3579#
3580
3581function get_xattr # name path
3582{
3583	typeset name=$1
3584	typeset path=$2
3585
3586	case "$UNAME" in
3587	FreeBSD)
3588		getextattr -qq user "${name}" "${path}"
3589		;;
3590	*)
3591		attr -qg "${name}" "${path}"
3592		;;
3593	esac
3594}
3595
3596function set_xattr # name value path
3597{
3598	typeset name=$1
3599	typeset value=$2
3600	typeset path=$3
3601
3602	case "$UNAME" in
3603	FreeBSD)
3604		setextattr user "${name}" "${value}" "${path}"
3605		;;
3606	*)
3607		attr -qs "${name}" -V "${value}" "${path}"
3608		;;
3609	esac
3610}
3611
3612function set_xattr_stdin # name value
3613{
3614	typeset name=$1
3615	typeset path=$2
3616
3617	case "$UNAME" in
3618	FreeBSD)
3619		setextattr -i user "${name}" "${path}"
3620		;;
3621	*)
3622		attr -qs "${name}" "${path}"
3623		;;
3624	esac
3625}
3626
3627function rm_xattr # name path
3628{
3629	typeset name=$1
3630	typeset path=$2
3631
3632	case "$UNAME" in
3633	FreeBSD)
3634		rmextattr -q user "${name}" "${path}"
3635		;;
3636	*)
3637		attr -qr "${name}" "${path}"
3638		;;
3639	esac
3640}
3641
3642function ls_xattr # path
3643{
3644	typeset path=$1
3645
3646	case "$UNAME" in
3647	FreeBSD)
3648		lsextattr -qq user "${path}"
3649		;;
3650	*)
3651		attr -ql "${path}"
3652		;;
3653	esac
3654}
3655
3656function kstat # stat flags?
3657{
3658	typeset stat=$1
3659	typeset flags=${2-"-n"}
3660
3661	case "$UNAME" in
3662	FreeBSD)
3663		sysctl $flags kstat.zfs.misc.$stat
3664		;;
3665	Linux)
3666		cat "/proc/spl/kstat/zfs/$stat" 2>/dev/null
3667		;;
3668	*)
3669		false
3670		;;
3671	esac
3672}
3673
3674function get_arcstat # stat
3675{
3676	typeset stat=$1
3677
3678	case "$UNAME" in
3679	FreeBSD)
3680		kstat arcstats.$stat
3681		;;
3682	Linux)
3683		kstat arcstats | awk "/$stat/"' { print $3 }'
3684		;;
3685	*)
3686		false
3687		;;
3688	esac
3689}
3690
3691function punch_hole # offset length file
3692{
3693	typeset offset=$1
3694	typeset length=$2
3695	typeset file=$3
3696
3697	case "$UNAME" in
3698	FreeBSD)
3699		truncate -d -o $offset -l $length "$file"
3700		;;
3701	Linux)
3702		fallocate --punch-hole --offset $offset --length $length "$file"
3703		;;
3704	*)
3705		false
3706		;;
3707	esac
3708}
3709
3710function zero_range # offset length file
3711{
3712	typeset offset=$1
3713	typeset length=$2
3714	typeset file=$3
3715
3716	case "$UNAME" in
3717	Linux)
3718		fallocate --zero-range --offset $offset --length $length "$file"
3719		;;
3720	*)
3721		false
3722		;;
3723	esac
3724}
3725
3726#
3727# Wait for the specified arcstat to reach non-zero quiescence.
3728# If echo is 1 echo the value after reaching quiescence, otherwise
3729# if echo is 0 print the arcstat we are waiting on.
3730#
3731function arcstat_quiescence # stat echo
3732{
3733	typeset stat=$1
3734	typeset echo=$2
3735	typeset do_once=true
3736
3737	if [[ $echo -eq 0 ]]; then
3738		echo "Waiting for arcstat $1 quiescence."
3739	fi
3740
3741	while $do_once || [ $stat1 -ne $stat2 ] || [ $stat2 -eq 0 ]; do
3742		typeset stat1=$(get_arcstat $stat)
3743		sleep 0.5
3744		typeset stat2=$(get_arcstat $stat)
3745		do_once=false
3746	done
3747
3748	if [[ $echo -eq 1 ]]; then
3749		echo $stat2
3750	fi
3751}
3752
3753function arcstat_quiescence_noecho # stat
3754{
3755	typeset stat=$1
3756	arcstat_quiescence $stat 0
3757}
3758
3759function arcstat_quiescence_echo # stat
3760{
3761	typeset stat=$1
3762	arcstat_quiescence $stat 1
3763}
3764
3765#
3766# Given an array of pids, wait until all processes
3767# have completed and check their return status.
3768#
3769function wait_for_children #children
3770{
3771	rv=0
3772	children=("$@")
3773	for child in "${children[@]}"
3774	do
3775		child_exit=0
3776		wait ${child} || child_exit=$?
3777		if [ $child_exit -ne 0 ]; then
3778			echo "child ${child} failed with ${child_exit}"
3779			rv=1
3780		fi
3781	done
3782	return $rv
3783}
3784
3785#
3786# Compare two directory trees recursively in a manner similar to diff(1), but
3787# using rsync. If there are any discrepancies, a summary of the differences are
3788# output and a non-zero error is returned.
3789#
3790# If you're comparing a directory after a ZIL replay, you should set
3791# LIBTEST_DIFF_ZIL_REPLAY=1 or use replay_directory_diff which will cause
3792# directory_diff to ignore mtime changes (the ZIL replay won't fix up mtime
3793# information).
3794#
3795function directory_diff # dir_a dir_b
3796{
3797	dir_a="$1"
3798	dir_b="$2"
3799	zil_replay="${LIBTEST_DIFF_ZIL_REPLAY:-0}"
3800
3801	# If one of the directories doesn't exist, return 2. This is to match the
3802	# semantics of diff.
3803	if ! [ -d "$dir_a" -a -d "$dir_b" ]; then
3804		return 2
3805	fi
3806
3807	# Run rsync with --dry-run --itemize-changes to get something akin to diff
3808	# output, but rsync is far more thorough in detecting differences (diff
3809	# doesn't compare file metadata, and cannot handle special files).
3810	#
3811	# Also make sure to filter out non-user.* xattrs when comparing. On
3812	# SELinux-enabled systems the copied tree will probably have different
3813	# SELinux labels.
3814	args=("-nicaAHX" '--filter=-x! user.*' "--delete")
3815
3816	# NOTE: Quite a few rsync builds do not support --crtimes which would be
3817	# necessary to verify that creation times are being maintained properly.
3818	# Unfortunately because of this we cannot use it unconditionally but we can
3819	# check if this rsync build supports it and use it then. This check is
3820	# based on the same check in the rsync test suite (testsuite/crtimes.test).
3821	#
3822	# We check ctimes even with zil_replay=1 because the ZIL does store
3823	# creation times and we should make sure they match (if the creation times
3824	# do not match there is a "c" entry in one of the columns).
3825	if rsync --version | grep -q "[, ] crtimes"; then
3826		args+=("--crtimes")
3827	else
3828		log_note "This rsync package does not support --crtimes (-N)."
3829	fi
3830
3831	# If we are testing a ZIL replay, we need to ignore timestamp changes.
3832	# Unfortunately --no-times doesn't do what we want -- it will still tell
3833	# you if the timestamps don't match but rsync will set the timestamps to
3834	# the current time (leading to an itemised change entry). It's simpler to
3835	# just filter out those lines.
3836	if [ "$zil_replay" -eq 0 ]; then
3837		filter=("cat")
3838	else
3839		# Different rsync versions have different numbers of columns. So just
3840		# require that aside from the first two, all other columns must be
3841		# blank (literal ".") or a timestamp field ("[tT]").
3842		filter=("grep" "-v" '^\..[.Tt]\+ ')
3843	fi
3844
3845	diff="$(rsync "${args[@]}" "$dir_a/" "$dir_b/" | "${filter[@]}")"
3846	rv=0
3847	if [ -n "$diff" ]; then
3848		echo "$diff"
3849		rv=1
3850	fi
3851	return $rv
3852}
3853
3854#
3855# Compare two directory trees recursively, without checking whether the mtimes
3856# match (creation times will be checked if the available rsync binary supports
3857# it). This is necessary for ZIL replay checks (because the ZIL does not
3858# contain mtimes and thus after a ZIL replay, mtimes won't match).
3859#
3860# This is shorthand for LIBTEST_DIFF_ZIL_REPLAY=1 directory_diff <...>.
3861#
3862function replay_directory_diff # dir_a dir_b
3863{
3864	LIBTEST_DIFF_ZIL_REPLAY=1 directory_diff "$@"
3865}
3866
3867#
3868# Put coredumps into $1/core.{basename}
3869#
3870# Output must be saved and passed to pop_coredump_pattern on cleanup
3871#
3872function push_coredump_pattern # dir
3873{
3874	ulimit -c unlimited
3875	case "$UNAME" in
3876	Linux)
3877		cat /proc/sys/kernel/core_pattern /proc/sys/kernel/core_uses_pid
3878		echo "$1/core.%e" >/proc/sys/kernel/core_pattern &&
3879		    echo 0 >/proc/sys/kernel/core_uses_pid
3880		;;
3881	FreeBSD)
3882		sysctl -n kern.corefile
3883		sysctl kern.corefile="$1/core.%N" >/dev/null
3884		;;
3885	*)
3886		# Nothing to output – set only for this shell
3887		coreadm -p "$1/core.%f"
3888		;;
3889	esac
3890}
3891
3892#
3893# Put coredumps back into the default location
3894#
3895function pop_coredump_pattern
3896{
3897	[ -s "$1" ] || return 0
3898	case "$UNAME" in
3899	Linux)
3900		typeset pat pid
3901		{ read -r pat; read -r pid; } < "$1"
3902		echo "$pat" >/proc/sys/kernel/core_pattern &&
3903		    echo "$pid" >/proc/sys/kernel/core_uses_pid
3904		;;
3905	FreeBSD)
3906		sysctl kern.corefile="$(<"$1")" >/dev/null
3907		;;
3908	esac
3909}
3910