diff options
Diffstat (limited to 'sys/compat/linux/linux_mmap.h')
| -rw-r--r-- | sys/compat/linux/linux_mmap.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_mmap.h b/sys/compat/linux/linux_mmap.h index 043dec9d40b7..75af79ae1316 100644 --- a/sys/compat/linux/linux_mmap.h +++ b/sys/compat/linux/linux_mmap.h @@ -66,6 +66,27 @@ int linux_mmap_common(struct thread *, uintptr_t, size_t, int, int, int, off_t); int linux_mprotect_common(struct thread *, uintptr_t, size_t, int); +int linux_pkey_alloc_common(struct thread *, uint64_t, uint64_t); +int linux_pkey_free_common(struct thread *, int); +int linux_pkey_mprotect_common(struct thread *, uintptr_t, size_t, int, int); + +/* + * Machine-dependent protection key back ends: the real implementation + * on amd64 (sys/amd64/linux/linux_pkru.c), stubs behaving as Linux + * does on hardware without protection keys elsewhere (each arch's + * linux_emul_md.c). + */ +int linux_pkey_alloc_machdep(struct thread *, uint64_t); +int linux_pkey_free_machdep(struct thread *, int); +int linux_pkey_mprotect_machdep(struct thread *, uintptr_t, size_t, int, int); + +/* x86 memory protection keys (pkey_alloc(2) access rights) */ +#define LINUX_PKEY_DISABLE_ACCESS 0x1 +#define LINUX_PKEY_DISABLE_WRITE 0x2 +#define LINUX_PKEY_ACCESS_MASK (LINUX_PKEY_DISABLE_ACCESS | \ + LINUX_PKEY_DISABLE_WRITE) +#define LINUX_PKEY_MAX 16 /* keys 0..15; 0 is default */ + int linux_madvise_common(struct thread *, uintptr_t, size_t, int); #endif /* _LINUX_MMAP_H_ */ |