[mirror_ubuntu-jammy-kernel.git] / include / linux / pkeys.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_PKEYS_H
#define _LINUX_PKEYS_H

#include <linux/mm.h>

#ifdef CONFIG_ARCH_HAS_PKEYS
#include <asm/pkeys.h>
#else /* ! CONFIG_ARCH_HAS_PKEYS */
#define arch_max_pkey() (1)
#define execute_only_pkey(mm) (0)
#define arch_override_mprotect_pkey(vma, prot, pkey) (0)
#define PKEY_DEDICATED_EXECUTE_ONLY 0
#define ARCH_VM_PKEY_FLAGS 0

static inline int vma_pkey(struct vm_area_struct *vma)
{
	return 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;
}

static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
{
	return -EINVAL;
}

static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
			unsigned long init_val)
{
	return 0;
}

static inline bool arch_pkeys_enabled(void)
{
	return false;
}

static inline void copy_init_pkru_to_fpregs(void)
{
}

#endif /* ! CONFIG_ARCH_HAS_PKEYS */

#endif /* _LINUX_PKEYS_H */
Commit	Line	Data
	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	#ifdef CONFIG_ARCH_HAS_PKEYS
	8	#include <asm/pkeys.h>
	9	#else /* ! CONFIG_ARCH_HAS_PKEYS */
	10	#define arch_max_pkey() (1)
	11	#define execute_only_pkey(mm) (0)
	12	#define arch_override_mprotect_pkey(vma, prot, pkey) (0)
	13	#define PKEY_DEDICATED_EXECUTE_ONLY 0
	14	#define ARCH_VM_PKEY_FLAGS 0
	15
	16	static inline int vma_pkey(struct vm_area_struct *vma)
	17	{
	18	return 0;
	19	}
	20
	21	static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey)
	22	{
	23	return (pkey == 0);
	24	}
	25
	26	static inline int mm_pkey_alloc(struct mm_struct *mm)
	27	{
	28	return -1;
	29	}
	30
	31	static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
	32	{
	33	return -EINVAL;
	34	}
	35
	36	static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
	37	unsigned long init_val)
	38	{
	39	return 0;
	40	}
	41
	42	static inline bool arch_pkeys_enabled(void)
	43	{
	44	return false;
	45	}
	46
	47	static inline void copy_init_pkru_to_fpregs(void)
	48	{
	49	}
	50
	51	#endif /* ! CONFIG_ARCH_HAS_PKEYS */
	52
	53	#endif /* _LINUX_PKEYS_H */