sysdeps/unix/sysv/linux/ldsodefs.h

   1 /* Run-time dynamic linker data structures for loaded ELF shared objects.
   2    Copyright (C) 2001, 2002, 2003, 2006 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _LDSODEFS_H
  21
  22 #include <kernel-features.h>
  23
  24 /* Get the real definitions.  */
  25 #include_next <ldsodefs.h>
  26
  27 /* Now define our stuff.  */
  28
  29 /* We have the auxiliary vector.  */
  30 #define HAVE_AUX_VECTOR
  31
  32 /* Used by static binaries to check the auxiliary vector.  */
  33 extern void _dl_aux_init (ElfW(auxv_t) *av) internal_function;
  34
  35 /* Initialization which is normally done by the dynamic linker.  */
  36 extern void _dl_non_dynamic_init (void) internal_function;
  37
  38 /* We can assume that the kernel always provides the AT_UID, AT_EUID,
  39    AT_GID, and AT_EGID values in the auxiliary vector from 2.4.0 or so on.  */
  40 #if __ASSUME_AT_XID
  41 # define HAVE_AUX_XID
  42 #endif
  43
  44 /* We can assume that the kernel always provides the AT_SECURE value
  45    in the auxiliary vector from 2.5.74 or so on.  */
  46 #if __ASSUME_AT_SECURE
  47 # define HAVE_AUX_SECURE
  48 #endif
  49
  50 /* Starting with one of the 2.4.0 pre-releases the Linux kernel passes
  51    up the page size information.  */
  52 #if __ASSUME_AT_PAGESIZE
  53 # define HAVE_AUX_PAGESIZE
  54 #endif
  55
  56 #endif /* ldsodefs.h */