It is absolutely invalid practice to test 'prot' bits to determine if a
  file is readable.  The only acceptable means of testing readability is to
  open it for reading, due to discrepancies between permissions, DACLs and
  SACLS.  Even Linux hackers are gonna need to learn that lesson if they
  plan to do any DOD or Gov work once DACL-enhanced Linux is adopted.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91516 13f79535-47bb-0310-9956-ffa450edef68