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>

*** 24,34 ****
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
  #
! # Copyright (c) 2013 by Delphix. All rights reserved.
  #
  
  . $STF_SUITE/include/libtest.shlib
  . $STF_SUITE/tests/functional/snapshot/snapshot.cfg
  
--- 24,34 ----
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
  #
! # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
  #
  
  . $STF_SUITE/include/libtest.shlib
  . $STF_SUITE/tests/functional/snapshot/snapshot.cfg
  
*** 48,90 ****
  
  function cleanup
  {
          snapexists $SNAPFS
          [[ $? -eq 0 ]] && \
!                 log_must $ZFS destroy $SNAPFS
  
          [[ -e $TESTDIR ]] && \
!                 log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
  }
  
  log_assert "Verify that a snapshot of an empty file system remains empty."
  
  log_onexit cleanup
  
  [[ -n $TESTDIR ]] && \
!     log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
  
! log_must $ZFS snapshot $SNAPFS
! FILE_COUNT=`$LS -Al $SNAPDIR | $GREP -v "total 0" | wc -l`
  if [[ $FILE_COUNT -ne 0 ]]; then
!         $LS $SNAPDIR
          log_fail "BEFORE: $SNAPDIR contains $FILE_COUNT files(s)."
  fi
  
  typeset -i COUNT=10
  
  log_note "Populate the $TESTDIR directory"
  typeset -i i=1
  while [[ $i -lt $COUNT ]]; do
!         log_must $FILE_WRITE -o create -f $TESTDIR/file$i \
             -b $BLOCKSZ -c $NUM_WRITES -d $i
  
          (( i = i + 1 ))
  done
  
! FILE_COUNT=`$LS -Al $SNAPDIR | $GREP -v "total 0" | wc -l`
  if [[ $FILE_COUNT -ne 0 ]]; then
!         $LS $SNAPDIR
          log_fail "AFTER: $SNAPDIR contains $FILE_COUNT files(s)."
  fi
  
  log_pass "The NULL snapshot remains empty."
--- 48,90 ----
  
  function cleanup
  {
          snapexists $SNAPFS
          [[ $? -eq 0 ]] && \
!                 log_must zfs destroy $SNAPFS
  
          [[ -e $TESTDIR ]] && \
!                 log_must rm -rf $TESTDIR/* > /dev/null 2>&1
  }
  
  log_assert "Verify that a snapshot of an empty file system remains empty."
  
  log_onexit cleanup
  
  [[ -n $TESTDIR ]] && \
!     log_must rm -rf $TESTDIR/* > /dev/null 2>&1
  
! log_must zfs snapshot $SNAPFS
! FILE_COUNT=`ls -Al $SNAPDIR | grep -v "total 0" | wc -l`
  if [[ $FILE_COUNT -ne 0 ]]; then
!         ls $SNAPDIR
          log_fail "BEFORE: $SNAPDIR contains $FILE_COUNT files(s)."
  fi
  
  typeset -i COUNT=10
  
  log_note "Populate the $TESTDIR directory"
  typeset -i i=1
  while [[ $i -lt $COUNT ]]; do
!         log_must file_write -o create -f $TESTDIR/file$i \
             -b $BLOCKSZ -c $NUM_WRITES -d $i
  
          (( i = i + 1 ))
  done
  
! FILE_COUNT=`ls -Al $SNAPDIR | grep -v "total 0" | wc -l`
  if [[ $FILE_COUNT -ne 0 ]]; then
!         ls $SNAPDIR
          log_fail "AFTER: $SNAPDIR contains $FILE_COUNT files(s)."
  fi
  
  log_pass "The NULL snapshot remains empty."