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kernel add
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#ifndef _UAPI_PR_H
#define _UAPI_PR_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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