include/asm-generic/mm_hooks.h

   1 /*
   2  * Define generic no-op hooks for arch_dup_mmap, arch_exit_mmap
   3  * and arch_unmap to be included in asm-FOO/mmu_context.h for any
   4  * arch FOO which doesn't need to hook these.
   5  */
   6 #ifndef _ASM_GENERIC_MM_HOOKS_H
   7 #define _ASM_GENERIC_MM_HOOKS_H
   8
   9 static inline void arch_dup_mmap(struct mm_struct *oldmm,
  10                                  struct mm_struct *mm)
  11 {
  12 }
  13
  14 static inline void arch_exit_mmap(struct mm_struct *mm)
  15 {
  16 }
  17
  18 static inline void arch_unmap(struct mm_struct *mm,
  19                         struct vm_area_struct *vma,
  20                         unsigned long start, unsigned long end)
  21 {
  22 }
  23
  24 static inline void arch_bprm_mm_init(struct mm_struct *mm,
  25                                      struct vm_area_struct *vma)
  26 {
  27 }
  28
  29 static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
  30                 bool write, bool execute, bool foreign)
  31 {
  32         /* by default, allow everything */
  33         return true;
  34 }
  35
  36 static inline bool arch_pte_access_permitted(pte_t pte, bool write)
  37 {
  38         /* by default, allow everything */
  39         return true;
  40 }
  41 #endif  /* _ASM_GENERIC_MM_HOOKS_H */