7290 ZFS test suite needs to control what utilities it can run
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>

@@ -23,11 +23,11 @@
 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
 
 #
-# Copyright (c) 2013 by Delphix. All rights reserved.
+# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
 #
 
 . $STF_SUITE/include/libtest.shlib
 
 export USEDTEST=$TESTPOOL/$TESTFS/usedtest-snapused

@@ -53,11 +53,11 @@
 }
 
 function check_used # dataset
 {
         typeset dataset=$1
-        for child in $($ZFS list -rH -t filesystem,volume -o name $dataset)
+        for child in $(zfs list -rH -t filesystem,volume -o name $dataset)
         do
                 _check_used $child
         done
 }
 

@@ -64,11 +64,11 @@
 function check_usedbychildren # dataset
 {
         typeset dataset=$1
         typeset -i usedbychildren_sum=0
         typeset -i parent_usedbychildren=0
-        for child in $($ZFS list -rH -t filesystem,volume -o name $dataset)
+        for child in $(zfs list -rH -t filesystem,volume -o name $dataset)
         do
                 if [[ "$(get_prop type $child)" == "snapshot" ]]; then
                         continue
                 fi
 

@@ -118,11 +118,11 @@
 }
 
 function check_usedbydataset # dataset
 {
         typeset dataset=$1
-        for child in $($ZFS list -rH -t filesystem,volume -o name $dataset)
+        for child in $(zfs list -rH -t filesystem,volume -o name $dataset)
         do
                 _check_usedbydataset $child
         done
 }
 

@@ -144,11 +144,11 @@
 }
 
 function check_usedbyrefreservation # dataset
 {
         typeset dataset=$1
-        for child in $($ZFS list -rH -t filesystem,volume -o name $dataset)
+        for child in $(zfs list -rH -t filesystem,volume -o name $dataset)
         do
                 _check_usedbyrefreservation $child
         done
 }
 

@@ -155,11 +155,11 @@
 function check_usedbysnapshots # dataset
 {
         typeset dataset=$1
         typeset -i usedbysnapshots_sum=0
         typeset -i parent_usedbysnapshots=0
-        for child in $($ZFS list -rH -t filesystem,volume,snapshot -o name $dataset)
+        for child in $(zfs list -rH -t filesystem,volume,snapshot -o name $dataset)
         do
                 # parent
                 if [[ "$child" == "$dataset" ]]; then
                         parent_usedbysnapshots=$(get_prop usedbysnapshots $child)
                         continue