tests/mkdir/selinux.sh

   1 #!/bin/sh
   2 # ensure that an invalid context doesn't cause a segfault
   3
   4 # Copyright (C) 2008-2019 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 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ mkdir mkfifo mknod
  21
  22 # Note: on an SELinux/enforcing system running mcstransd older than
  23 # mcstrans-0.2.8-1.fc9, the following commands may mistakenly exit
  24 # successfully, in spite of the invalid context string.
  25 require_selinux_enforcing_
  26
  27 c=invalid-selinux-context
  28 msg="failed to set default file creation context to '$c':"
  29
  30 # Test each of mkdir, mknod, mkfifo with "-Z invalid-context".
  31
  32 for cmd_w_arg in 'mkdir dir' 'mknod b p' 'mkfifo f'; do
  33   # In OpenBSD's /bin/sh, mknod is a shell built-in.
  34   # Running via "env" ensures we run our program and not the built-in.
  35   env -- $cmd_w_arg --context=$c 2> out && fail=1
  36   set $cmd_w_arg; cmd=$1
  37   echo "$cmd: $msg" > exp || framework_failure_
  38
  39   # Some systems fail with ENOTSUP, EINVAL, ENOENT, or even
  40   # "Unknown system error", or "Function not implemented".
  41   # For AIX 5.3: "Unsupported attribute value"
  42   # For HP-UX 11.23: Unknown error (252)
  43   sed                                   \
  44     -e 's/ Not supported$//'            \
  45     -e 's/ Invalid argument$//'         \
  46     -e 's/ Unknown system error$//'     \
  47     -e 's/ Operation not supported$//'  \
  48     -e 's/ Function not implemented$//' \
  49     -e 's/ Unsupported attribute value$//'      \
  50     -e 's/ Unknown error .*$//' \
  51     -e 's/ No such file or directory$//' out > k || framework_failure_
  52   mv k out || fail=1
  53   compare exp out || fail=1
  54 done
  55
  56 Exit $fail