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 2008 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/refreserv/refreserv.cfg
  
--- 24,34 ----
  # Copyright 2008 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/refreserv/refreserv.cfg
  
*** 45,76 ****
  
  verify_runnable "both"
  
  function cleanup
  {
!         log_must $ZFS destroy -rf $TESTPOOL/$TESTFS
!         log_must $ZFS create $TESTPOOL/$TESTFS
!         log_must $ZFS set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
  }
  
  log_assert "Verify a snapshot will only be allowed if there is enough " \
          "free space outside of this refreservation."
  log_onexit cleanup
  
  fs=$TESTPOOL/$TESTFS
! log_must $ZFS set quota=25M $fs
! log_must $ZFS set refreservation=10M $fs
  
  mntpnt=$(get_prop mountpoint $fs)
! log_must $MKFILE 7M $mntpnt/$TESTFILE
! log_must $ZFS snapshot $fs@snap
  
! log_must $MKFILE 7M $mntpnt/$TESTFILE.2
! log_must $ZFS snapshot $fs@snap2
  
! log_must $MKFILE 7M $mntpnt/$TESTFILE.3
! log_mustnot $ZFS snapshot $fs@snap3
  if datasetexists $fs@snap3 ; then
          log_fail "ERROR: $fs@snap3 should not exists."
  fi
  
  log_pass "Verify a snapshot will only be allowed if there is enough " \
--- 45,76 ----
  
  verify_runnable "both"
  
  function cleanup
  {
!         log_must zfs destroy -rf $TESTPOOL/$TESTFS
!         log_must zfs create $TESTPOOL/$TESTFS
!         log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS
  }
  
  log_assert "Verify a snapshot will only be allowed if there is enough " \
          "free space outside of this refreservation."
  log_onexit cleanup
  
  fs=$TESTPOOL/$TESTFS
! log_must zfs set quota=25M $fs
! log_must zfs set refreservation=10M $fs
  
  mntpnt=$(get_prop mountpoint $fs)
! log_must mkfile 7M $mntpnt/$TESTFILE
! log_must zfs snapshot $fs@snap
  
! log_must mkfile 7M $mntpnt/$TESTFILE.2
! log_must zfs snapshot $fs@snap2
  
! log_must mkfile 7M $mntpnt/$TESTFILE.3
! log_mustnot zfs snapshot $fs@snap3
  if datasetexists $fs@snap3 ; then
          log_fail "ERROR: $fs@snap3 should not exists."
  fi
  
  log_pass "Verify a snapshot will only be allowed if there is enough " \