dlfcn/dladdr1.c

   1 /* Locate the shared object symbol nearest a given address.
   2    Copyright (C) 2003 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 #include <dlfcn.h>
  21
  22 int
  23 dladdr1 (const void *address, Dl_info *info, void **extra, int flags)
  24 {
  25   switch (flags)
  26     {
  27     default:                    /* Make this an error?  */
  28     case 0:
  29       return _dl_addr (address, info, NULL, NULL);
  30     case RTLD_DL_SYMENT:
  31       return _dl_addr (address, info, NULL, (const ElfW(Sym) **) extra);
  32     case RTLD_DL_LINKMAP:
  33       return _dl_addr (address, info, (struct link_map **) extra, NULL);
  34     }
  35 }