1  /* Replacement <selinux/label.h> for platforms that lack it.
       2     Copyright 2020-2023 Free Software Foundation, Inc.
       3  
       4     This file is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU Lesser General Public License as
       6     published by the Free Software Foundation; either version 2.1 of the
       7     License, or (at your option) any later version.
       8  
       9     This file 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 Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Paul Eggert.  */
      18  
      19  #ifndef SELINUX_LABEL_H
      20  #define SELINUX_LABEL_H
      21  
      22  /* This file uses _GL_INLINE_HEADER_BEGIN, _GL_INLINE,
      23     _GL_ATTRIBUTE_MAYBE_UNUSED.  */
      24  #if !_GL_CONFIG_H_INCLUDED
      25   #error "Please include config.h first."
      26  #endif
      27  
      28  #include <selinux/selinux.h>
      29  #include <errno.h>
      30  
      31  _GL_INLINE_HEADER_BEGIN
      32  #ifndef SE_LABEL_INLINE
      33  # define SE_LABEL_INLINE _GL_INLINE
      34  #endif
      35  
      36  /* _GL_ATTRIBUTE_MAYBE_UNUSED declares that it is not a programming mistake if
      37     the entity is not used.  The compiler should not warn if the entity is not
      38     used.  */
      39  #ifndef _GL_ATTRIBUTE_MAYBE_UNUSED
      40  # if 0 /* no GCC or clang version supports this yet */
      41  #  define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
      42  # elif defined __GNUC__ || defined __clang__
      43  #  define _GL_ATTRIBUTE_MAYBE_UNUSED __attribute__ ((__unused__))
      44  # else
      45  #  define _GL_ATTRIBUTE_MAYBE_UNUSED
      46  # endif
      47  #endif
      48  
      49  #define SELABEL_CTX_FILE 0
      50  
      51  struct selabel_handle;
      52  
      53  SE_LABEL_INLINE int
      54  selabel_lookup (_GL_ATTRIBUTE_MAYBE_UNUSED struct selabel_handle *hnd,
      55                  _GL_ATTRIBUTE_MAYBE_UNUSED char **context,
      56                  _GL_ATTRIBUTE_MAYBE_UNUSED char const *key,
      57                  _GL_ATTRIBUTE_MAYBE_UNUSED int type)
      58  { errno = ENOTSUP; return -1; }
      59  
      60  SE_LABEL_INLINE struct selabel_handle *
      61  selabel_open (_GL_ATTRIBUTE_MAYBE_UNUSED int backend,
      62                _GL_ATTRIBUTE_MAYBE_UNUSED struct selinux_opt *options,
      63                _GL_ATTRIBUTE_MAYBE_UNUSED unsigned nopt)
      64  { errno = ENOTSUP; return 0; }
      65  
      66  SE_LABEL_INLINE void
      67  selabel_close (_GL_ATTRIBUTE_MAYBE_UNUSED struct selabel_handle *hnd)
      68  { errno = ENOTSUP; }
      69  
      70  _GL_INLINE_HEADER_END
      71  
      72  #endif