diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pkeys.h | 41 | ||||
| -rw-r--r-- | include/linux/syscalls.h | 8 | ||||
| -rw-r--r-- | include/uapi/asm-generic/mman-common.h | 5 | ||||
| -rw-r--r-- | include/uapi/asm-generic/unistd.h | 12 |
4 files changed, 50 insertions, 16 deletions
diff --git a/include/linux/pkeys.h b/include/linux/pkeys.h index 1d405a2b7272..e4c08c1ff0c5 100644 --- a/include/linux/pkeys.h +++ b/include/linux/pkeys.h @@ -4,11 +4,6 @@ #include <linux/mm_types.h> #include <asm/mmu_context.h> -#define PKEY_DISABLE_ACCESS 0x1 -#define PKEY_DISABLE_WRITE 0x2 -#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ - PKEY_DISABLE_WRITE) - #ifdef CONFIG_ARCH_HAS_PKEYS #include <asm/pkeys.h> #else /* ! CONFIG_ARCH_HAS_PKEYS */ @@ -16,18 +11,34 @@ #define execute_only_pkey(mm) (0) #define arch_override_mprotect_pkey(vma, prot, pkey) (0) #define PKEY_DEDICATED_EXECUTE_ONLY 0 -#endif /* ! CONFIG_ARCH_HAS_PKEYS */ +#define ARCH_VM_PKEY_FLAGS 0 + +static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) +{ + return (pkey == 0); +} + +static inline int mm_pkey_alloc(struct mm_struct *mm) +{ + return -1; +} -/* - * This is called from mprotect_pkey(). - * - * Returns true if the protection keys is valid. - */ -static inline bool validate_pkey(int pkey) +static inline int mm_pkey_free(struct mm_struct *mm, int pkey) { - if (pkey < 0) - return false; - return (pkey < arch_max_pkey()); + WARN_ONCE(1, "free of protection key when disabled"); + return -EINVAL; } +static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, + unsigned long init_val) +{ + return 0; +} + +static inline void copy_init_pkru_to_fpregs(void) +{ +} + +#endif /* ! CONFIG_ARCH_HAS_PKEYS */ + #endif /* _LINUX_PKEYS_H */ diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index d02239022bd0..0d7abb8b7315 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -898,4 +898,12 @@ asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); +asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, + unsigned long prot, int pkey); +asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); +asmlinkage long sys_pkey_free(int pkey); +//asmlinkage long sys_pkey_get(int pkey, unsigned long flags); +//asmlinkage long sys_pkey_set(int pkey, unsigned long access_rights, +// unsigned long flags); + #endif diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h index 58274382a616..8c27db0c5c08 100644 --- a/include/uapi/asm-generic/mman-common.h +++ b/include/uapi/asm-generic/mman-common.h @@ -72,4 +72,9 @@ #define MAP_HUGE_SHIFT 26 #define MAP_HUGE_MASK 0x3f +#define PKEY_DISABLE_ACCESS 0x1 +#define PKEY_DISABLE_WRITE 0x2 +#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ + PKEY_DISABLE_WRITE) + #endif /* __ASM_GENERIC_MMAN_COMMON_H */ diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index a26415b5151c..dbfee7e86ba6 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -724,9 +724,19 @@ __SYSCALL(__NR_copy_file_range, sys_copy_file_range) __SC_COMP(__NR_preadv2, sys_preadv2, compat_sys_preadv2) #define __NR_pwritev2 287 __SC_COMP(__NR_pwritev2, sys_pwritev2, compat_sys_pwritev2) +#define __NR_pkey_mprotect 288 +__SYSCALL(__NR_pkey_mprotect, sys_pkey_mprotect) +#define __NR_pkey_alloc 289 +__SYSCALL(__NR_pkey_alloc, sys_pkey_alloc) +#define __NR_pkey_free 290 +__SYSCALL(__NR_pkey_free, sys_pkey_free) +#define __NR_pkey_get 291 +//__SYSCALL(__NR_pkey_get, sys_pkey_get) +#define __NR_pkey_set 292 +//__SYSCALL(__NR_pkey_set, sys_pkey_set) #undef __NR_syscalls -#define __NR_syscalls 288 +#define __NR_syscalls 291 /* * All syscalls below here should go away really, |