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