include/linux/pkeys.h

Source file repositories/reference/linux-study-clean/include/linux/pkeys.h

File Facts

System
Linux kernel
Corpus path
include/linux/pkeys.h
Extension
.h
Size
990 bytes
Lines
52
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _LINUX_PKEYS_H
#define _LINUX_PKEYS_H

#include <linux/mm.h>

#define ARCH_DEFAULT_PKEY	0

#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;
}

#endif /* ! CONFIG_ARCH_HAS_PKEYS */

#endif /* _LINUX_PKEYS_H */

Annotation

Implementation Notes