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  }