| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Kees Cook | 2b68f6c | 2015-04-14 15:48:00 -0700 | [diff] [blame] | 2 | #ifndef _ELF_RANDOMIZE_H |
| 3 | #define _ELF_RANDOMIZE_H |
| 4 | |
| Kees Cook | 204db6e | 2015-04-14 15:48:12 -0700 | [diff] [blame] | 5 | struct mm_struct; |
| 6 | |
| Kees Cook | 2b68f6c | 2015-04-14 15:48:00 -0700 | [diff] [blame] | 7 | #ifndef CONFIG_ARCH_HAS_ELF_RANDOMIZE |
| 8 | static inline unsigned long arch_mmap_rnd(void) { return 0; } |
| Kees Cook | 204db6e | 2015-04-14 15:48:12 -0700 | [diff] [blame] | 9 | # if defined(arch_randomize_brk) && defined(CONFIG_COMPAT_BRK) |
| 10 | # define compat_brk_randomized |
| 11 | # endif |
| 12 | # ifndef arch_randomize_brk |
| 13 | # define arch_randomize_brk(mm) (mm->brk) |
| 14 | # endif |
| Kees Cook | 2b68f6c | 2015-04-14 15:48:00 -0700 | [diff] [blame] | 15 | #else |
| 16 | extern unsigned long arch_mmap_rnd(void); |
| Kees Cook | 204db6e | 2015-04-14 15:48:12 -0700 | [diff] [blame] | 17 | extern unsigned long arch_randomize_brk(struct mm_struct *mm); |
| 18 | # ifdef CONFIG_COMPAT_BRK |
| 19 | # define compat_brk_randomized |
| 20 | # endif |
| Kees Cook | 2b68f6c | 2015-04-14 15:48:00 -0700 | [diff] [blame] | 21 | #endif |
| 22 | |
| 23 | #endif |