elf/dl-is_dso.h

   1 /* Heuristic for recognizing DSO file names.
   2    Copyright (C) 2021 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 }