LXR linux/include/linux/pkeys.h

   1#ifndef _LINUX_PKEYS_H
   2#define _LINUX_PKEYS_H
   3
   4#include <linux/mm_types.h>
   5#include <asm/mmu_context.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
  16static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey)
  17{
  18        return (pkey == 0);
  19}
  20
  21static inline int mm_pkey_alloc(struct mm_struct *mm)
  22{
  23        return -1;
  24}
  25
  26static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
  27{
  28        return -EINVAL;
  29}
  30
  31static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
  32                        unsigned long init_val)
  33{
  34        return 0;
  35}
  36
  37static inline void copy_init_pkru_to_fpregs(void)
  38{
  39}
  40
  41#endif /* ! CONFIG_ARCH_HAS_PKEYS */
  42
  43#endif /* _LINUX_PKEYS_H */
  44