elf/dlopenold.c

   1 /* Load a shared object at run time.
   2    Copyright (C) 1995, 1996, 1997, 1998 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #ifdef PIC
  21
  22 #include <dlfcn.h>
  23 #include <stddef.h>
  24 #include <elf/ldsodefs.h>
  25
  26 struct dlopen_args
  27 {
  28   /* The arguments for dlopen_doit.  */
  29   const char *file;
  30   int mode;
  31   /* The return value of dlopen_doit.  */
  32   struct link_map *new;
  33 };
  34
  35
  36 static void
  37 dlopen_doit (void *a)
  38 {
  39   struct dlopen_args *args = (struct dlopen_args *) a;
  40
  41   args->new = _dl_open (args->file ?: "", args->mode);
  42 }
  43
  44
  45 void *
  46 __dlopen_nocheck (const char *file, int mode)
  47 {
  48   struct dlopen_args args;
  49   args.file = file;
  50
  51   if ((mode & RTLD_BINDING_MASK) == 0)
  52     /* By default assume RTLD_LAZY.  */
  53     mode |= RTLD_LAZY;
  54   args.mode = mode;
  55
  56   return _dlerror_run (dlopen_doit, &args) ? NULL : args.new;
  57 }
  58 symbol_version (__dlopen_nocheck, dlopen, GLIBC_2.0);
  59 #endif