1  /* Locate the shared object symbol nearest a given address.
       2     Copyright (C) 1996-2023 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  #include <dlfcn.h>
      20  #include <ldsodefs.h>
      21  #include <shlib-compat.h>
      22  
      23  int
      24  __dladdr (const void *address, Dl_info *info)
      25  {
      26  #ifdef SHARED
      27    if (GLRO (dl_dlfcn_hook) != NULL)
      28      return GLRO (dl_dlfcn_hook)->dladdr (address, info);
      29  #endif
      30    return _dl_addr (address, info, NULL, NULL);
      31  }
      32  versioned_symbol (libc, __dladdr, dladdr, GLIBC_2_34);
      33  
      34  #if OTHER_SHLIB_COMPAT  (libdl, GLIBC_2_0, GLIBC_2_34)
      35  compat_symbol (libdl, __dladdr, dladdr, GLIBC_2_0);
      36  #endif