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 | #define ARCH_DEFAULT_PKEY 0 |
8 | |
9 | #ifdef CONFIG_ARCH_HAS_PKEYS |
10 | #include <asm/pkeys.h> |
11 | #else /* ! CONFIG_ARCH_HAS_PKEYS */ |
12 | #define arch_max_pkey() (1) |
13 | #define execute_only_pkey(mm) (0) |
14 | #define arch_override_mprotect_pkey(vma, prot, pkey) (0) |
15 | #define PKEY_DEDICATED_EXECUTE_ONLY 0 |
16 | #define ARCH_VM_PKEY_FLAGS 0 |
17 | |
18 | static inline int vma_pkey(struct vm_area_struct *vma) |
19 | { |
20 | return 0; |
21 | } |
22 | |
23 | static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) |
24 | { |
25 | return (pkey == 0); |
26 | } |
27 | |
28 | static inline int mm_pkey_alloc(struct mm_struct *mm) |
29 | { |
30 | return -1; |
31 | } |
32 | |
33 | static inline int mm_pkey_free(struct mm_struct *mm, int pkey) |
34 | { |
35 | return -EINVAL; |
36 | } |
37 | |
38 | static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, |
39 | unsigned long init_val) |
40 | { |
41 | return 0; |
42 | } |
43 | |
44 | static inline bool arch_pkeys_enabled(void) |
45 | { |
46 | return false; |
47 | } |
48 | |
49 | #endif /* ! CONFIG_ARCH_HAS_PKEYS */ |
50 | |
51 | #endif /* _LINUX_PKEYS_H */ |
52 | |