| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_PKEYS_H |
| 3 | #define _LINUX_PKEYS_H |
| 4 | |
| 5 | #include <linux/mm.h> |
| 6 | |
| 7 | #ifdef CONFIG_ARCH_HAS_PKEYS |
| 8 | #include <asm/pkeys.h> |
| 9 | #else /* ! CONFIG_ARCH_HAS_PKEYS */ |
| 10 | #define arch_max_pkey() (1) |
| 11 | #define execute_only_pkey(mm) (0) |
| 12 | #define arch_override_mprotect_pkey(vma, prot, pkey) (0) |
| 13 | #define PKEY_DEDICATED_EXECUTE_ONLY 0 |
| 14 | #define ARCH_VM_PKEY_FLAGS 0 |
| 15 | |
| 16 | static inline int vma_pkey(struct vm_area_struct *vma) |
| 17 | { |
| 18 | return 0; |
| 19 | } |
| 20 | |
| 21 | static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) |
| 22 | { |
| 23 | return (pkey == 0); |
| 24 | } |
| 25 | |
| 26 | static inline int mm_pkey_alloc(struct mm_struct *mm) |
| 27 | { |
| 28 | return -1; |
| 29 | } |
| 30 | |
| 31 | static inline int mm_pkey_free(struct mm_struct *mm, int pkey) |
| 32 | { |
| 33 | return -EINVAL; |
| 34 | } |
| 35 | |
| 36 | static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, |
| 37 | unsigned long init_val) |
| 38 | { |
| 39 | return 0; |
| 40 | } |
| 41 | |
| 42 | static inline bool arch_pkeys_enabled(void) |
| 43 | { |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | static inline void copy_init_pkru_to_fpregs(void) |
| 48 | { |
| 49 | } |
| 50 | |
| 51 | #endif /* ! CONFIG_ARCH_HAS_PKEYS */ |
| 52 | |
| 53 | #endif /* _LINUX_PKEYS_H */ |