1  /* Heuristic for recognizing DSO file names.
       2     Copyright (C) 2021-2023 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  #include <string.h>
      21  
      22  /* Returns true if the file name looks like a DSO name.  */
      23  static bool
      24  _dl_is_dso (const char *name)
      25  {
      26    /* Recognize lib*.so*, ld-*.so*, ld.so.*, ld64.so.*.  ld-*.so*
      27       matches both platform dynamic linker names like ld-linux.so.2,
      28       and versioned dynamic loader names like ld-2.12.so.  */
      29    return (((strncmp (name, "lib", 3) == 0 || strncmp (name, "ld-", 3) == 0)
      30             && strstr (name, ".so") != NULL)
      31            || strncmp (name, "ld.so.", 6) == 0
      32            || strncmp (name, "ld64.so.", 8) == 0);
      33  }