| /* Memory allocation next to an unmapped page. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef SUPPORT_NEXT_TO_FAULT_H |
| #define SUPPORT_NEXT_TO_FAULT_H |
| |
| #include <sys/cdefs.h> |
| #include <sys/types.h> |
| |
| __BEGIN_DECLS |
| |
| /* The memory region created by next_to_fault_allocate. */ |
| struct support_next_to_fault |
| { |
| /* The user data. */ |
| char *buffer; |
| size_t length; |
| |
| /* The entire allocated region. */ |
| void *region_start; |
| size_t region_size; |
| }; |
| |
| /* Allocate a buffer of SIZE bytes just before a page which is mapped |
| with PROT_NONE (so that overrunning the buffer will cause a |
| fault). */ |
| struct support_next_to_fault support_next_to_fault_allocate (size_t size); |
| |
| /* Deallocate the memory region allocated by |
| next_to_fault_allocate. */ |
| void support_next_to_fault_free (struct support_next_to_fault *); |
| |
| #endif /* SUPPORT_NEXT_TO_FAULT_H */ |
