sysdeps/generic/dl-prop.h

   1 /* Support for GNU properties.  Generic version.
   2    Copyright (C) 2018-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _DL_PROP_H
  20 #define _DL_PROP_H
  21
  22 /* The following functions are used by the dynamic loader and the
  23    dlopen machinery to process PT_NOTE entries in the binary or
  24    shared object.  The notes can be used to change the behaviour of
  25    the loader, and as such offer a flexible mechanism for hooking in
  26    various checks related to ABI tags or implementing "flag day" ABI
  27    transitions.  */
  28
  29 static inline void __attribute__ ((always_inline))
  30 _rtld_main_check (struct link_map *m, const char *program)
  31 {
  32 }
  33
  34 static inline void __attribute__ ((always_inline))
  35 _dl_open_check (struct link_map *m)
  36 {
  37 }
  38
  39 #ifdef FILEBUF_SIZE
  40 static inline int __attribute__ ((always_inline))
  41 _dl_process_pt_note (struct link_map *l, const ElfW(Phdr) *ph,
  42                      int fd, struct filebuf *fbp)
  43 {
  44   return 0;
  45 }
  46 #endif
  47
  48 static inline int __attribute__ ((always_inline))
  49 _rtld_process_pt_note (struct link_map *l, const ElfW(Phdr) *ph)
  50 {
  51   return 0;
  52 }
  53
  54 #endif /* _DL_PROP_H */