tests/cp/capability.sh

   1 #!/bin/sh
   2 # Ensure cp --preserves copies capabilities
   3
   4 # Copyright (C) 2010-2023 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 <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ cp
  21 require_root_
  22 working_umask_or_skip_
  23
  24
  25 grep '^#define HAVE_CAP 1' $CONFIG_HEADER > /dev/null \
  26   || skip_ "configured without libcap support"
  27
  28 (setcap --help) 2>&1 |grep 'usage: setcap' > /dev/null \
  29   || skip_ "setcap utility not found"
  30 (getcap --help) 2>&1 |grep 'usage: getcap' > /dev/null \
  31   || skip_ "getcap utility not found"
  32
  33
  34 touch file || framework_failure_
  35 chown $NON_ROOT_USERNAME file || framework_failure_
  36
  37 setcap 'cap_net_bind_service=ep' file ||
  38   skip_ "setcap doesn't work"
  39 getcap file | grep cap_net_bind_service >/dev/null ||
  40   skip_ "getcap doesn't work"
  41
  42 cp --preserve=xattr file copy1 || fail=1
  43
  44 # Before coreutils 8.5 the capabilities would not be preserved,
  45 # as the owner was set _after_ copying xattrs, thus clearing any capabilities.
  46 cp --preserve=all   file copy2 || fail=1
  47
  48 for file in copy1 copy2; do
  49   getcap $file | grep cap_net_bind_service >/dev/null || fail=1
  50 done
  51
  52 Exit $fail