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
  
*** 50,113 ****
  verify_runnable "both"
  
  function cleanup
  {
          snapexists $SNAPPOOL && \
!                 log_must $ZFS destroy -r $SNAPPOOL
  
          [[ -e $TESTDIR ]] && \
!                 log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
  }
  
  log_assert "Verify that rollback to a snapshot created by snapshot -r succeeds."
  log_onexit cleanup
  
  [[ -n $TESTDIR ]] && \
!     log_must $RM -rf $TESTDIR/* > /dev/null 2>&1
  
  typeset -i COUNT=10
  
  log_note "Populate the $TESTDIR directory (prior to snapshot)"
  typeset -i i=0
  while (( i < COUNT )); do
!         log_must $FILE_WRITE -o create -f $TESTDIR/before_file$i \
             -b $BLOCKSZ -c $NUM_WRITES -d $i
  
          (( i = i + 1 ))
  done
  
! log_must $ZFS snapshot -r $SNAPPOOL
  
! FILE_COUNT=`$LS -Al $SNAPDIR | $GREP -v "total" | wc -l`
  if (( FILE_COUNT != COUNT )); then
!         $LS -Al $SNAPDIR
          log_fail "AFTER: $SNAPFS contains $FILE_COUNT files(s)."
  fi
  
  log_note "Populate the $TESTDIR directory (post snapshot)"
  typeset -i i=0
  while (( i < COUNT )); do
!         log_must $FILE_WRITE -o create -f $TESTDIR/after_file$i \
             -b $BLOCKSZ -c $NUM_WRITES -d $i
  
          (( i = i + 1 ))
  done
  
  #
  # Now rollback to latest snapshot
  #
! log_must $ZFS rollback $SNAPFS
  
! FILE_COUNT=`$LS -Al $TESTDIR/after* 2> /dev/null | $GREP -v "total" | wc -l`
  if (( FILE_COUNT != 0 )); then
!         $LS -Al $TESTDIR
          log_fail "$TESTDIR contains $FILE_COUNT after* files(s)."
  fi
  
! FILE_COUNT=`$LS -Al $TESTDIR/before* 2> /dev/null \
!     | $GREP -v "total" | wc -l`
  if (( FILE_COUNT != $COUNT )); then
!         $LS -Al $TESTDIR
          log_fail "$TESTDIR contains $FILE_COUNT before* files(s)."
  fi
  
  log_pass "Rollback with child snapshot works as expected."
--- 50,113 ----
  verify_runnable "both"
  
  function cleanup
  {
          snapexists $SNAPPOOL && \
!                 log_must zfs destroy -r $SNAPPOOL
  
          [[ -e $TESTDIR ]] && \
!                 log_must rm -rf $TESTDIR/* > /dev/null 2>&1
  }
  
  log_assert "Verify that rollback to a snapshot created by snapshot -r succeeds."
  log_onexit cleanup
  
  [[ -n $TESTDIR ]] && \
!     log_must rm -rf $TESTDIR/* > /dev/null 2>&1
  
  typeset -i COUNT=10
  
  log_note "Populate the $TESTDIR directory (prior to snapshot)"
  typeset -i i=0
  while (( i < COUNT )); do
!         log_must file_write -o create -f $TESTDIR/before_file$i \
             -b $BLOCKSZ -c $NUM_WRITES -d $i
  
          (( i = i + 1 ))
  done
  
! log_must zfs snapshot -r $SNAPPOOL
  
! FILE_COUNT=`ls -Al $SNAPDIR | grep -v "total" | wc -l`
  if (( FILE_COUNT != COUNT )); then
!         ls -Al $SNAPDIR
          log_fail "AFTER: $SNAPFS contains $FILE_COUNT files(s)."
  fi
  
  log_note "Populate the $TESTDIR directory (post snapshot)"
  typeset -i i=0
  while (( i < COUNT )); do
!         log_must file_write -o create -f $TESTDIR/after_file$i \
             -b $BLOCKSZ -c $NUM_WRITES -d $i
  
          (( i = i + 1 ))
  done
  
  #
  # Now rollback to latest snapshot
  #
! log_must zfs rollback $SNAPFS
  
! FILE_COUNT=`ls -Al $TESTDIR/after* 2> /dev/null | grep -v "total" | wc -l`
  if (( FILE_COUNT != 0 )); then
!         ls -Al $TESTDIR
          log_fail "$TESTDIR contains $FILE_COUNT after* files(s)."
  fi
  
! FILE_COUNT=`ls -Al $TESTDIR/before* 2> /dev/null \
!     | grep -v "total" | wc -l`
  if (( FILE_COUNT != $COUNT )); then
!         ls -Al $TESTDIR
          log_fail "$TESTDIR contains $FILE_COUNT before* files(s)."
  fi
  
  log_pass "Rollback with child snapshot works as expected."