pkeys.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_PKEYS_H
 3#define _LINUX_PKEYS_H
 4
 5#include <linux/mm.h>
 6
 7#define ARCH_DEFAULT_PKEY	0
 8
 9#ifdef CONFIG_ARCH_HAS_PKEYS
10#include <asm/pkeys.h>
11#else /* ! CONFIG_ARCH_HAS_PKEYS */
12#define arch_max_pkey() (1)
13#define execute_only_pkey(mm) (0)
14#define arch_override_mprotect_pkey(vma, prot, pkey) (0)
15#define PKEY_DEDICATED_EXECUTE_ONLY 0
16#define ARCH_VM_PKEY_FLAGS 0
17
18static inline int vma_pkey(struct vm_area_struct *vma)
19{
20	return 0;
21}
22
23static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey)
24{
25	return (pkey == 0);
26}
27
28static inline int mm_pkey_alloc(struct mm_struct *mm)
29{
30	return -1;
31}
32
33static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
34{
35	return -EINVAL;
36}
37
38static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
39			unsigned long init_val)
40{
41	return 0;
42}
43
44static inline bool arch_pkeys_enabled(void)
45{
46	return false;
47}
48
49#endif /* ! CONFIG_ARCH_HAS_PKEYS */
50
51#endif /* _LINUX_PKEYS_H */