#ifndef __ZEV_H__
#define __ZEV_H__

#include <sys/types.h>

#ifdef _KERNEL
#include <sys/dmu_objset.h>
#include <sys/dsl_dataset.h>
#include <sys/zfs_vfsops.h>
#include <sys/dsl_dir.h>
#include <sys/spa_impl.h>
#endif

#define ZEVIOC			('z' << 8)
#define ZEV_IOC_GET_STATISTICS		(ZEVIOC | 1)	/* get zev statistics */
#define ZEV_IOC_MUTE_POOL		(ZEVIOC | 2)	/* no events for pool */
#define ZEV_IOC_UNMUTE_POOL		(ZEVIOC | 3)	/* send pool events */
#define ZEV_IOC_SET_MAX_QUEUE_LEN	(ZEVIOC | 4)	/* when to block ops */

#define ZEV_OP_MIN			 1
#define	ZEV_OP_ZFS_MOUNT		 1
#define	ZEV_OP_ZFS_UMOUNT		 2
#define	ZEV_OP_ZVOL_WRITE		 3
#define	ZEV_OP_ZVOL_TRUNCATE		 4
#define	ZEV_OP_ZNODE_CLOSE_AFTER_UPDATE	 5
#define	ZEV_OP_ZNODE_CREATE		 6
#define	ZEV_OP_ZNODE_REMOVE		 7
#define	ZEV_OP_ZNODE_LINK		 8
#define	ZEV_OP_ZNODE_SYMLINK		 9
#define	ZEV_OP_ZNODE_RENAME		10
#define	ZEV_OP_ZNODE_WRITE		11
#define	ZEV_OP_ZNODE_TRUNCATE		12
#define	ZEV_OP_ZNODE_SETATTR		13
#define	ZEV_OP_ZNODE_ACL		14
#define	ZEV_OP_MAX			14

typedef struct zev_statistics_t {
	uint64_t	zev_queue_len;
	uint64_t	zev_max_queue_len;
	uint64_t	zev_bytes_read;
	/* counters */
	uint64_t	zev_cnt_total_events;
	uint64_t	zev_cnt_errors;
	/* zfsvfs ops */
	uint64_t	zev_cnt_zfs_mount;
	uint64_t	zev_cnt_zfs_umount;
	/* zvol ops */
	uint64_t	zev_cnt_zvol_write;
	uint64_t	zev_cnt_zvol_truncate;
	/* znode ops */
	uint64_t	zev_cnt_znode_close_after_update;
	uint64_t	zev_cnt_znode_create;
	uint64_t	zev_cnt_znode_remove;
	uint64_t	zev_cnt_znode_link;
	uint64_t	zev_cnt_znode_symlink;
	uint64_t	zev_cnt_znode_rename;
	uint64_t	zev_cnt_znode_write;
	uint64_t	zev_cnt_znode_truncate;
	uint64_t	zev_cnt_znode_setattr;
	uint64_t	zev_cnt_znode_acl;
} zev_statistics_t;

typedef struct zev_ioctl_poolarg {
	uint64_t	zev_poolname_len;
	char		zev_poolname[MAXPATHLEN];
} zev_ioctl_poolarg_t;

#ifdef _KERNEL
void zev_mq_printf(int op, int error, char *fmt, ...);
int zev_skip_pool(objset_t *os);
#endif

#endif /* __ZEV_H__ */