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>

*** 23,32 ****
--- 23,36 ----
  #
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
+ #
+ # Copyright (c) 2016 by Delphix. All rights reserved.
+ #
+ 
  . $STF_SUITE/tests/functional/truncate/truncate.cfg
  . $STF_SUITE/include/libtest.shlib
  
  #
  # DESCRIPTION:
*** 40,63 ****
  
  verify_runnable "both"
  
  function cleanup
  {
!         [[ -e $TESTDIR ]] && log_must $RM -rf $TESTDIR/*
!         [[ -f $srcfile ]] && $RM -f $srcfile
  }
  
  log_assert "Ensure zeroed file gets written correctly during a sync operation"
  
  srcfile="/tmp/cosmo.$$"
! log_must $DD if=/dev/urandom of=$srcfile bs=1024k count=1
  
  log_onexit cleanup
! log_must $CP $srcfile $TESTDIR/$TESTFILE
! log_must $CP /dev/null $TESTDIR/$TESTFILE
! log_must $SYNC
  if [[ -s $TESTDIR/$TESTFILE ]]; then
!         log_note "$($LS -l $TESTDIR/$TESTFILE)"
          log_fail "testfile not truncated"
  fi
  
  log_pass "Successful truncation while a sync operation is in progress."
--- 44,67 ----
  
  verify_runnable "both"
  
  function cleanup
  {
!         [[ -e $TESTDIR ]] && log_must rm -rf $TESTDIR/*
!         [[ -f $srcfile ]] && rm -f $srcfile
  }
  
  log_assert "Ensure zeroed file gets written correctly during a sync operation"
  
  srcfile="/tmp/cosmo.$$"
! log_must dd if=/dev/urandom of=$srcfile bs=1024k count=1
  
  log_onexit cleanup
! log_must cp $srcfile $TESTDIR/$TESTFILE
! log_must cp /dev/null $TESTDIR/$TESTFILE
! log_must sync
  if [[ -s $TESTDIR/$TESTFILE ]]; then
!         log_note "$(ls -l $TESTDIR/$TESTFILE)"
          log_fail "testfile not truncated"
  fi
  
  log_pass "Successful truncation while a sync operation is in progress."