Re: Bug#20241: Timezones should depend on debian-utils

[Manoj Srivastava <srivasta@datasync.com>]

Hi,

if [ -x /usr/bin/tempfile ] ; then
   TIMEZONES=$(tempfile)
else
   TIMEZONES=/etc/timezone.$$
   if [ -e $TIMEZONES ]; then
      ## either abort
      #  echo >&2 "Temp File $TIMEZONES already exists" 
      #  exit 1

      ## or delete the file and go ahead
      if [ -d $TIMEZONES ]; then
          echo >&2 "$TIMEZONES  is a directory!!" 
	  # abort, or remove the directory.
          exit 1
          # rm -rf $TIMEZONES
      else
          rm -f   $TIMEZONES
      fi
   fi
   # hopefully, our umask is set so that only the owner can write to
   # this file, and that this may not be replaced by a symlink (sticky
   # flag n /tmp required)
   touch $TIMEZONES
fi

	There. That may well be paranoid enough. season to either
 abort or remove the offending dir/file as you will. The non-tempfile
 solution is not quite as safe (since a link maybe created ater we
 test for existence and before we create an empty file, or after we
 remove and before we create the empty file, but those windows are
 relatively small.

	manoj
-- 
 The author should gaze at Noah, and ... learn, as they did in the
 Ark, to crowd a great deal of matter into a very small
 compass. Sydney, Smith, Edinburgh Review
Manoj Srivastava  <srivasta@acm.org> <http://www.datasync.com/%7Esrivasta/>
Key C7261095 fingerprint = CB D9 F4 12 68 07 E4 05  CC 2D 27 12 1D F5 E8 6E


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