1  /* File identity for the dynamic linker.  Stub version.
       2     Copyright (C) 2015-2023 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 <stdbool.h>
      20  
      21  /* This type stores whatever information is fetched by _dl_get_file_id
      22     and compared by _dl_file_id_match_p.  */
      23  struct r_file_id
      24    {
      25      /* In the stub version, we don't record anything at all.  */
      26    };
      27  
      28  /* Sample FD to fill in *ID.  Returns true on success.
      29     On error, returns false, with errno set.  */
      30  static inline bool
      31  _dl_get_file_id (int fd __attribute__ ((unused)),
      32  		 struct r_file_id *id __attribute__ ((unused)))
      33  {
      34    return true;
      35  }
      36  
      37  /* Compare two results from _dl_get_file_id for equality.
      38     It's crucial that this never return false-positive matches.
      39     It's ideal that it never return false-negative mismatches either,
      40     but lack of matches is survivable.  */
      41  static inline bool
      42  _dl_file_id_match_p (const struct r_file_id *a __attribute__ ((unused)),
      43  		     const struct r_file_id *b __attribute__ ((unused)))
      44  {
      45    return false;
      46  }