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
  
  #
--- 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
  
  #
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  #
  #
  
  log_assert "Writing random data into /dev/zfs should do no harm."
  
! log_mustnot $DD if=/dev/urandom of=/dev/zfs count=1024
  
  log_pass "Writing random data into /dev/zfs should do no harm."
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  #
  #
  
  log_assert "Writing random data into /dev/zfs should do no harm."
  
! log_mustnot dd if=/dev/urandom of=/dev/zfs count=1024
  
  log_pass "Writing random data into /dev/zfs should do no harm."