tests/cp/parent-perm-race.sh

   1 #!/bin/sh
   2 # Make sure cp -pR --parents isn't too generous with parent permissions.
   3
   4 # Copyright (C) 2006-2016 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_ cp
  21
  22 # cp -p gives ENOTSUP on NFS on Linux 2.6.9 at least
  23 require_local_dir_
  24
  25 umask 002
  26 mkdir mode ownership d || framework_failure_
  27 chmod g+s d 2>/dev/null # The cp test is valid either way.
  28
  29 # Terminate any background cp process
  30 cleanup_() { kill $pid 2>/dev/null && wait $pid; }
  31
  32 for attr in mode ownership
  33 do
  34   mkfifo_or_skip_ $attr/fifo
  35
  36   # Copy a fifo's contents.  That way, we can examine d/$attr's
  37   # state while cp is running.
  38   cp --preserve=$attr -R --copy-contents --parents $attr d & pid=$!
  39
  40   (
  41     # Now 'cp' is reading the fifo.
  42     # Check the permissions of the temporary destination
  43     # directory that 'cp' has made.
  44     ls -ld d/$attr >d/$attr.ls
  45
  46     # Close the fifo so that "cp" can continue.  But output first,
  47     # before exiting, otherwise some shells would optimize away the file
  48     # descriptor that holds the fifo open.
  49     echo foo
  50   ) >$attr/fifo
  51
  52   ls_output=$(cat d/$attr.ls) || fail=1
  53   case $attr,$ls_output in
  54   ownership,d???--[-S]--[-S]* | \
  55   mode,d????-??-?* | \
  56   mode,d??[-x]?w[-x]?-[-x]* )
  57     ;;
  58   *)
  59     fail=1;;
  60   esac
  61
  62   wait $pid || fail=1
  63 done
  64
  65 Exit $fail