gl/lib/smack.h

   1 /* Include and determine availability of smack routines
   2    Copyright (C) 2013-2023 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Here we replace or wrap the most common smack functions used by coreutils.
  18    Others will need to be protected by HAVE_SMACK.  */
  19
  20 #ifdef HAVE_SMACK
  21 # include <sys/smack.h>
  22 #else
  23 static inline ssize_t
  24 smack_new_label_from_self (char **label)
  25 {
  26   return -1;
  27 }
  28
  29 static inline int
  30 smack_set_label_for_self (char const *label)
  31 {
  32   return -1;
  33 }
  34 #endif
  35
  36 static inline bool
  37 is_smack_enabled (void)
  38 {
  39 #ifdef HAVE_SMACK
  40   return smack_smackfs_path () != nullptr;
  41 #else
  42   return false;
  43 #endif
  44 }