tests/mv/symlink-onto-hardlink.sh

   1 #!/bin/sh
   2 # Ensure that mv works with a few symlink-onto-hard-link cases.
   3
   4 # Copyright (C) 2012-2017 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ mv
  21
  22 touch f || framework_failure_
  23 ln f h || framework_failure_
  24 ln -s f s || framework_failure_
  25
  26 # Given two links f and h to some important content, and a symlink s to f,
  27 # "mv s f" must fail because it might then be hard to find the link, h.
  28 # "mv s l" may succeed because then, s (now "l") still points to f.
  29 # Of course, if the symlink were being moved into a different destination
  30 # directory, things would be very different, and, I suspect, implausible.
  31
  32 echo "mv: 's' and 'f' are the same file" > exp || framework_failure_
  33 mv s f > out 2> err && fail=1
  34 compare /dev/null out || fail=1
  35 compare exp err || fail=1
  36
  37 mv s l > out 2> err || fail=1
  38 compare /dev/null out || fail=1
  39 compare /dev/null err || fail=1
  40
  41 Exit $fail