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TOMOYO Linux Cross Reference
Linux/include/linux/pkeys.h

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  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 */
 54 

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