dl-iterate-phdr.c 1.4 KB

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  1. /* Copyright 2003 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public License as
  5. published by the Free Software Foundation; either version 2.1 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If
  13. not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  14. Cambridge, MA 02139, USA. */
  15. #define _GNU_SOURCE
  16. #include <link.h>
  17. extern int __attribute__((__weak__))
  18. __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
  19. size_t size, void *data),
  20. void *data);
  21. /* Define it as a pointer, such that we get a pointer to the global
  22. function descriptor, that won't be optimized away by the
  23. linker. */
  24. static int (*ptr) (int (*callback) (struct dl_phdr_info *info,
  25. size_t size, void *data),
  26. void *data) = __dl_iterate_phdr;
  27. int
  28. dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
  29. size_t size, void *data),
  30. void *data)
  31. {
  32. if (ptr)
  33. return ptr (callback, data);
  34. return 0;
  35. }