fortify_fail.c 1.5 KB

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  1. /* Copyright (C) 2007-2019 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
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the 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. Lesser 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; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <stdio.h>
  15. #include <stdlib.h>
  16. #include <stdbool.h>
  17. extern char **__libc_argv attribute_hidden;
  18. void
  19. __attribute__ ((noreturn))
  20. __fortify_fail_abort (_Bool need_backtrace, const char *msg)
  21. {
  22. /* The loop is added only to keep gcc happy. Don't pass down
  23. __libc_argv[0] if we aren't doing backtrace since __libc_argv[0]
  24. may point to the corrupted stack. */
  25. while (1)
  26. __libc_message (need_backtrace ? (do_abort | do_backtrace) : do_abort,
  27. "*** %s ***: %s terminated\n",
  28. msg,
  29. (need_backtrace && __libc_argv[0] != NULL
  30. ? __libc_argv[0] : "<unknown>"));
  31. }
  32. void
  33. __attribute__ ((noreturn))
  34. __fortify_fail (const char *msg)
  35. {
  36. __fortify_fail_abort (true, msg);
  37. }
  38. libc_hidden_def (__fortify_fail)
  39. libc_hidden_def (__fortify_fail_abort)