diff options
Diffstat (limited to 'arch/powerpc/include/asm/kup.h')
| -rw-r--r-- | arch/powerpc/include/asm/kup.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kup.h b/arch/powerpc/include/asm/kup.h index a2a959cb4e36..4d78b9d8c99c 100644 --- a/arch/powerpc/include/asm/kup.h +++ b/arch/powerpc/include/asm/kup.h @@ -4,6 +4,8 @@ #ifndef __ASSEMBLY__ +#include <asm/pgtable.h> + void setup_kup(void); #ifdef CONFIG_PPC_KUEP @@ -12,6 +14,36 @@ void setup_kuep(bool disabled); static inline void setup_kuep(bool disabled) { } #endif /* CONFIG_PPC_KUEP */ +#ifdef CONFIG_PPC_KUAP +void setup_kuap(bool disabled); +#else +static inline void setup_kuap(bool disabled) { } +static inline void allow_user_access(void __user *to, const void __user *from, + unsigned long size) { } +static inline void prevent_user_access(void __user *to, const void __user *from, + unsigned long size) { } +#endif /* CONFIG_PPC_KUAP */ + +static inline void allow_read_from_user(const void __user *from, unsigned long size) +{ + allow_user_access(NULL, from, size); +} + +static inline void allow_write_to_user(void __user *to, unsigned long size) +{ + allow_user_access(to, NULL, size); +} + +static inline void prevent_read_from_user(const void __user *from, unsigned long size) +{ + prevent_user_access(NULL, from, size); +} + +static inline void prevent_write_to_user(void __user *to, unsigned long size) +{ + prevent_user_access(to, NULL, size); +} + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_POWERPC_KUP_H_ */ |