lib/se-label.in.h

   1 /* Replacement <selinux/label.h> for platforms that lack it.
   2    Copyright 2020-2024 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 int
  61 selabel_lookup_raw (_GL_ATTRIBUTE_MAYBE_UNUSED struct selabel_handle *hnd,
  62                     _GL_ATTRIBUTE_MAYBE_UNUSED char **context,
  63                     _GL_ATTRIBUTE_MAYBE_UNUSED char const *key,
  64                     _GL_ATTRIBUTE_MAYBE_UNUSED int type)
  65 { errno = ENOTSUP; return -1; }
  66
  67 SE_LABEL_INLINE struct selabel_handle *
  68 selabel_open (_GL_ATTRIBUTE_MAYBE_UNUSED int backend,
  69               _GL_ATTRIBUTE_MAYBE_UNUSED struct selinux_opt *options,
  70               _GL_ATTRIBUTE_MAYBE_UNUSED unsigned nopt)
  71 { errno = ENOTSUP; return 0; }
  72
  73 SE_LABEL_INLINE void
  74 selabel_close (_GL_ATTRIBUTE_MAYBE_UNUSED struct selabel_handle *hnd)
  75 { errno = ENOTSUP; }
  76
  77 _GL_INLINE_HEADER_END
  78
  79 #endif