Release 4.12 include/uapi/linux/pr.h

#ifndef _UAPI_PR_H

#define _UAPI_PR_H

#include <linux/types.h>


enum pr_type {
	
PR_WRITE_EXCLUSIVE		= 1,
	
PR_EXCLUSIVE_ACCESS		= 2,
	
PR_WRITE_EXCLUSIVE_REG_ONLY	= 3,
	
PR_EXCLUSIVE_ACCESS_REG_ONLY	= 4,
	
PR_WRITE_EXCLUSIVE_ALL_REGS	= 5,
	
PR_EXCLUSIVE_ACCESS_ALL_REGS	= 6,
};


struct pr_reservation {
	
__u64	key;
	
__u32	type;
	
__u32	flags;
};


struct pr_registration {
	
__u64	old_key;
	
__u64	new_key;
	
__u32	flags;
	
__u32	__pad;
};


struct pr_preempt {
	
__u64	old_key;
	
__u64	new_key;
	
__u32	type;
	
__u32	flags;
};


struct pr_clear {
	
__u64	key;
	
__u32	flags;
	
__u32	__pad;
};


#define PR_FL_IGNORE_KEY	(1 << 0)	
/* ignore existing key */


#define IOC_PR_REGISTER		_IOW('p', 200, struct pr_registration)

#define IOC_PR_RESERVE		_IOW('p', 201, struct pr_reservation)

#define IOC_PR_RELEASE		_IOW('p', 202, struct pr_reservation)

#define IOC_PR_PREEMPT		_IOW('p', 203, struct pr_preempt)

#define IOC_PR_PREEMPT_ABORT	_IOW('p', 204, struct pr_preempt)

#define IOC_PR_CLEAR		_IOW('p', 205, struct pr_clear)

#endif /* _UAPI_PR_H */
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Directory: include/uapi/linux

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