/* Create dynamic location entry within a 32-bit value */ #define DYN_LOC(offset, size) ((size) << 16 | (offset))
/* List of supported registration flags */ enum user_reg_flag { /* Event will not delete upon last reference closing */
USER_EVENT_REG_PERSIST = 1U << 0,
/* Event will be allowed to have multiple formats */
USER_EVENT_REG_MULTI_FORMAT = 1U << 1,
/* This value or above is currently non-ABI */
USER_EVENT_REG_MAX = 1U << 2,
};
/* * Describes an event registration and stores the results of the registration. * This structure is passed to the DIAG_IOCSREG ioctl, callers at a minimum * must set the size and name_args before invocation.
*/ struct user_reg {
/* Input: Size of the user_reg structure being used */
__u32 size;
/* Input: Bit in enable address to use */
__u8 enable_bit;
/* Input: Enable size in bytes at address */
__u8 enable_size;
/* Input: Flags to use, if any */
__u16 flags;
/* Input: Address to update when enabled */
__u64 enable_addr;
/* Input: Pointer to string with event name, description and flags */
__u64 name_args;
/* Output: Index of the event to use when writing data */
__u32 write_index;
} __attribute__((__packed__));
/* * Describes an event unregister, callers must set the size, address and bit. * This structure is passed to the DIAG_IOCSUNREG ioctl to disable bit updates.
*/ struct user_unreg { /* Input: Size of the user_unreg structure being used */
__u32 size;
/* Input: Bit to unregister */
__u8 disable_bit;
/* Input: Reserved, set to 0 */
__u8 __reserved;
/* Input: Reserved, set to 0 */
__u16 __reserved2;
/* Input: Address to unregister */
__u64 disable_addr;
} __attribute__((__packed__));
#define DIAG_IOC_MAGIC '*'
/* Request to register a user_event */ #define DIAG_IOCSREG _IOWR(DIAG_IOC_MAGIC, 0, struct user_reg *)
/* Request to delete a user_event */ #define DIAG_IOCSDEL _IOW(DIAG_IOC_MAGIC, 1, char *)
/* Requests to unregister a user_event */ #define DIAG_IOCSUNREG _IOW(DIAG_IOC_MAGIC, 2, struct user_unreg*)
#endif/* _UAPI_LINUX_USER_EVENTS_H */
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