[mirror_zfs-debian.git] / include / sys / zfs_ioctl.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2013 by Delphix. All rights reserved.
 */

#ifndef	_SYS_ZFS_IOCTL_H
#define	_SYS_ZFS_IOCTL_H

#include <sys/cred.h>
#include <sys/dmu.h>
#include <sys/zio.h>
#include <sys/dsl_deleg.h>
#include <sys/spa.h>
#include <sys/zfs_stat.h>

#ifdef _KERNEL
#include <sys/nvpair.h>
#endif	/* _KERNEL */

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * The structures in this file are passed between userland and the
 * kernel.  Userland may be running a 32-bit process, while the kernel
 * is 64-bit.  Therefore, these structures need to compile the same in
 * 32-bit and 64-bit.  This means not using type "long", and adding
 * explicit padding so that the 32-bit structure will not be packed more
 * tightly than the 64-bit structure (which requires 64-bit alignment).
 */

/*
 * Property values for snapdir
 */
#define	ZFS_SNAPDIR_HIDDEN		0
#define	ZFS_SNAPDIR_VISIBLE		1

/*
 * Property values for snapdev
 */
#define	ZFS_SNAPDEV_HIDDEN		0
#define	ZFS_SNAPDEV_VISIBLE		1
/*
 * Property values for acltype
 */
#define	ZFS_ACLTYPE_OFF			0
#define	ZFS_ACLTYPE_POSIXACL		1

/*
 * Field manipulation macros for the drr_versioninfo field of the
 * send stream header.
 */

/*
 * Header types for zfs send streams.
 */
typedef enum drr_headertype {
	DMU_SUBSTREAM = 0x1,
	DMU_COMPOUNDSTREAM = 0x2
} drr_headertype_t;

#define	DMU_GET_STREAM_HDRTYPE(vi)	BF64_GET((vi), 0, 2)
#define	DMU_SET_STREAM_HDRTYPE(vi, x)	BF64_SET((vi), 0, 2, x)

#define	DMU_GET_FEATUREFLAGS(vi)	BF64_GET((vi), 2, 30)
#define	DMU_SET_FEATUREFLAGS(vi, x)	BF64_SET((vi), 2, 30, x)

/*
 * Feature flags for zfs send streams (flags in drr_versioninfo)
 */

#define	DMU_BACKUP_FEATURE_DEDUP		(1<<0)
#define	DMU_BACKUP_FEATURE_DEDUPPROPS		(1<<1)
#define	DMU_BACKUP_FEATURE_SA_SPILL		(1<<2)
/* flags #3 - #15 are reserved for incompatible closed-source implementations */
#define	DMU_BACKUP_FEATURE_EMBED_DATA		(1<<16)
#define	DMU_BACKUP_FEATURE_EMBED_DATA_LZ4	(1<<17)

/*
 * Mask of all supported backup features
 */
#define	DMU_BACKUP_FEATURE_MASK	(DMU_BACKUP_FEATURE_DEDUP | \
    DMU_BACKUP_FEATURE_DEDUPPROPS | DMU_BACKUP_FEATURE_SA_SPILL | \
    DMU_BACKUP_FEATURE_EMBED_DATA | DMU_BACKUP_FEATURE_EMBED_DATA_LZ4)

/* Are all features in the given flag word currently supported? */
#define	DMU_STREAM_SUPPORTED(x)	(!((x) & ~DMU_BACKUP_FEATURE_MASK))

/*
 * The drr_versioninfo field of the dmu_replay_record has the
 * following layout:
 *
 *	64	56	48	40	32	24	16	8	0
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 *  	|		reserved	|        feature-flags	    |C|S|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 *
 * The low order two bits indicate the header type: SUBSTREAM (0x1)
 * or COMPOUNDSTREAM (0x2).  Using two bits for this is historical:
 * this field used to be a version number, where the two version types
 * were 1 and 2.  Using two bits for this allows earlier versions of
 * the code to be able to recognize send streams that don't use any
 * of the features indicated by feature flags.
 */

#define	DMU_BACKUP_MAGIC 0x2F5bacbacULL

#define	DRR_FLAG_CLONE		(1<<0)
#define	DRR_FLAG_CI_DATA	(1<<1)

/*
 * flags in the drr_checksumflags field in the DRR_WRITE and
 * DRR_WRITE_BYREF blocks
 */
#define	DRR_CHECKSUM_DEDUP	(1<<0)

#define	DRR_IS_DEDUP_CAPABLE(flags)	((flags) & DRR_CHECKSUM_DEDUP)

/*
 * zfs ioctl command structure
 */
typedef struct dmu_replay_record {
	enum {
		DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
		DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF,
		DRR_SPILL, DRR_WRITE_EMBEDDED, DRR_NUMTYPES
	} drr_type;
	uint32_t drr_payloadlen;
	union {
		struct drr_begin {
			uint64_t drr_magic;
			uint64_t drr_versioninfo; /* was drr_version */
			uint64_t drr_creation_time;
			dmu_objset_type_t drr_type;
			uint32_t drr_flags;
			uint64_t drr_toguid;
			uint64_t drr_fromguid;
			char drr_toname[MAXNAMELEN];
		} drr_begin;
		struct drr_end {
			zio_cksum_t drr_checksum;
			uint64_t drr_toguid;
		} drr_end;
		struct drr_object {
			uint64_t drr_object;
			dmu_object_type_t drr_type;
			dmu_object_type_t drr_bonustype;
			uint32_t drr_blksz;
			uint32_t drr_bonuslen;
			uint8_t drr_checksumtype;
			uint8_t drr_compress;
			uint8_t drr_pad[6];
			uint64_t drr_toguid;
			/* bonus content follows */
		} drr_object;
		struct drr_freeobjects {
			uint64_t drr_firstobj;
			uint64_t drr_numobjs;
			uint64_t drr_toguid;
		} drr_freeobjects;
		struct drr_write {
			uint64_t drr_object;
			dmu_object_type_t drr_type;
			uint32_t drr_pad;
			uint64_t drr_offset;
			uint64_t drr_length;
			uint64_t drr_toguid;
			uint8_t drr_checksumtype;
			uint8_t drr_checksumflags;
			uint8_t drr_pad2[6];
			ddt_key_t drr_key; /* deduplication key */
			/* content follows */
		} drr_write;
		struct drr_free {
			uint64_t drr_object;
			uint64_t drr_offset;
			uint64_t drr_length;
			uint64_t drr_toguid;
		} drr_free;
		struct drr_write_byref {
			/* where to put the data */
			uint64_t drr_object;
			uint64_t drr_offset;
			uint64_t drr_length;
			uint64_t drr_toguid;
			/* where to find the prior copy of the data */
			uint64_t drr_refguid;
			uint64_t drr_refobject;
			uint64_t drr_refoffset;
			/* properties of the data */
			uint8_t drr_checksumtype;
			uint8_t drr_checksumflags;
			uint8_t drr_pad2[6];
			ddt_key_t drr_key; /* deduplication key */
		} drr_write_byref;
		struct drr_spill {
			uint64_t drr_object;
			uint64_t drr_length;
			uint64_t drr_toguid;
			uint64_t drr_pad[4]; /* needed for crypto */
			/* spill data follows */
		} drr_spill;
		struct drr_write_embedded {
			uint64_t drr_object;
			uint64_t drr_offset;
			/* logical length, should equal blocksize */
			uint64_t drr_length;
			uint64_t drr_toguid;
			uint8_t drr_compression;
			uint8_t drr_etype;
			uint8_t drr_pad[6];
			uint32_t drr_lsize; /* uncompressed size of payload */
			uint32_t drr_psize; /* compr. (real) size of payload */
			/* (possibly compressed) content follows */
		} drr_write_embedded;
	} drr_u;
} dmu_replay_record_t;

/* diff record range types */
typedef enum diff_type {
	DDR_NONE = 0x1,
	DDR_INUSE = 0x2,
	DDR_FREE = 0x4
} diff_type_t;

/*
 * The diff reports back ranges of free or in-use objects.
 */
typedef struct dmu_diff_record {
	uint64_t ddr_type;
	uint64_t ddr_first;
	uint64_t ddr_last;
} dmu_diff_record_t;

typedef struct zinject_record {
	uint64_t	zi_objset;
	uint64_t	zi_object;
	uint64_t	zi_start;
	uint64_t	zi_end;
	uint64_t	zi_guid;
	uint32_t	zi_level;
	uint32_t	zi_error;
	uint64_t	zi_type;
	uint32_t	zi_freq;
	uint32_t	zi_failfast;
	char		zi_func[MAXNAMELEN];
	uint32_t	zi_iotype;
	int32_t		zi_duration;
	uint64_t	zi_timer;
	uint32_t	zi_cmd;
	uint32_t	zi_pad;
} zinject_record_t;

#define	ZINJECT_NULL		0x1
#define	ZINJECT_FLUSH_ARC	0x2
#define	ZINJECT_UNLOAD_SPA	0x4

#define	ZEVENT_NONE		0x0
#define	ZEVENT_NONBLOCK		0x1
#define	ZEVENT_SIZE		1024

#define	ZEVENT_SEEK_START	0
#define	ZEVENT_SEEK_END		UINT64_MAX

typedef enum zinject_type {
	ZINJECT_UNINITIALIZED,
	ZINJECT_DATA_FAULT,
	ZINJECT_DEVICE_FAULT,
	ZINJECT_LABEL_FAULT,
	ZINJECT_IGNORED_WRITES,
	ZINJECT_PANIC,
	ZINJECT_DELAY_IO,
} zinject_type_t;

typedef struct zfs_share {
	uint64_t	z_exportdata;
	uint64_t	z_sharedata;
	uint64_t	z_sharetype;	/* 0 = share, 1 = unshare */
	uint64_t	z_sharemax;  /* max length of share string */
} zfs_share_t;

/*
 * ZFS file systems may behave the usual, POSIX-compliant way, where
 * name lookups are case-sensitive.  They may also be set up so that
 * all the name lookups are case-insensitive, or so that only some
 * lookups, the ones that set an FIGNORECASE flag, are case-insensitive.
 */
typedef enum zfs_case {
	ZFS_CASE_SENSITIVE,
	ZFS_CASE_INSENSITIVE,
	ZFS_CASE_MIXED
} zfs_case_t;

typedef struct zfs_cmd {
	char		zc_name[MAXPATHLEN];	/* name of pool or dataset */
	uint64_t	zc_nvlist_src;		/* really (char *) */
	uint64_t	zc_nvlist_src_size;
	uint64_t	zc_nvlist_dst;		/* really (char *) */
	uint64_t	zc_nvlist_dst_size;
	boolean_t	zc_nvlist_dst_filled;	/* put an nvlist in dst? */
	int		zc_pad2;

	/*
	 * The following members are for legacy ioctls which haven't been
	 * converted to the new method.
	 */
	uint64_t	zc_history;		/* really (char *) */
	char		zc_value[MAXPATHLEN * 2];
	char		zc_string[MAXNAMELEN];
	uint64_t	zc_guid;
	uint64_t	zc_nvlist_conf;		/* really (char *) */
	uint64_t	zc_nvlist_conf_size;
	uint64_t	zc_cookie;
	uint64_t	zc_objset_type;
	uint64_t	zc_perm_action;
	uint64_t	zc_history_len;
	uint64_t	zc_history_offset;
	uint64_t	zc_obj;
	uint64_t	zc_iflags;		/* internal to zfs(7fs) */
	zfs_share_t	zc_share;
	dmu_objset_stats_t zc_objset_stats;
	struct drr_begin zc_begin_record;
	zinject_record_t zc_inject_record;
	uint32_t	zc_defer_destroy;
	uint32_t	zc_flags;
	uint64_t	zc_action_handle;
	int		zc_cleanup_fd;
	uint8_t		zc_simple;
	uint8_t		zc_pad[3];		/* alignment */
	uint64_t	zc_sendobj;
	uint64_t	zc_fromobj;
	uint64_t	zc_createtxg;
	zfs_stat_t	zc_stat;
} zfs_cmd_t;

typedef struct zfs_useracct {
	char zu_domain[256];
	uid_t zu_rid;
	uint32_t zu_pad;
	uint64_t zu_space;
} zfs_useracct_t;

#define	ZFSDEV_MAX_MINOR	(1 << 16)
#define	ZFS_MIN_MINOR	(ZFSDEV_MAX_MINOR + 1)

#define	ZPOOL_EXPORT_AFTER_SPLIT 0x1

#ifdef _KERNEL

typedef struct zfs_creat {
	nvlist_t	*zct_zplprops;
	nvlist_t	*zct_props;
} zfs_creat_t;

extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
extern int zfs_secpolicy_rename_perms(const char *from,
    const char *to, cred_t *cr);
extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
extern int zfs_unmount_snap(const char *);
extern void zfs_destroy_unmount_origin(const char *);

extern boolean_t dataset_name_hidden(const char *name);

enum zfsdev_state_type {
	ZST_ONEXIT,
	ZST_ZEVENT,
	ZST_ALL,
};

/*
 * The zfsdev_state_t structure is managed as a singly-linked list
 * from which items are never deleted.  This allows for lock-free
 * reading of the list so long as assignments to the zs_next and
 * reads from zs_minor are performed atomically.  Empty items are
 * indicated by storing -1 into zs_minor.
 */
typedef struct zfsdev_state {
	struct zfsdev_state	*zs_next;	/* next zfsdev_state_t link */
	struct file		*zs_file;	/* associated file struct */
	minor_t			zs_minor;	/* made up minor number */
	void			*zs_onexit;	/* onexit data */
	void			*zs_zevent;	/* zevent data */
} zfsdev_state_t;

extern void *zfsdev_get_state(minor_t minor, enum zfsdev_state_type which);
extern minor_t zfsdev_getminor(struct file *filp);
extern minor_t zfsdev_minor_alloc(void);

#endif	/* _KERNEL */

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_ZFS_IOCTL_H */
Commit	Line	Data
34dc7c2f BB	1	/*
	2	* CDDL HEADER START
	3	*
	4	* The contents of this file are subject to the terms of the
	5	* Common Development and Distribution License (the "License").
	6	* You may not use this file except in compliance with the License.
	7	*
	8	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
	9	* or http://www.opensolaris.org/os/licensing.
	10	* See the License for the specific language governing permissions
	11	* and limitations under the License.
	12	*
	13	* When distributing Covered Code, include this CDDL HEADER in each
	14	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	15	* If applicable, add the following below this CDDL HEADER, with the
	16	* fields enclosed by brackets "[]" replaced with your own identifying
	17	* information: Portions Copyright [yyyy] [name of copyright owner]
	18	*
	19	* CDDL HEADER END
	20	*/
	21	/*
572e2857	22	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
ea04106b	23	* Copyright (c) 2013 by Delphix. All rights reserved.
34dc7c2f BB	24	*/
	25
	26	#ifndef _SYS_ZFS_IOCTL_H
	27	#define _SYS_ZFS_IOCTL_H
	28
34dc7c2f BB	29	#include <sys/cred.h>
	30	#include <sys/dmu.h>
	31	#include <sys/zio.h>
	32	#include <sys/dsl_deleg.h>
428870ff	33	#include <sys/spa.h>
572e2857	34	#include <sys/zfs_stat.h>
34dc7c2f BB	35
	36	#ifdef _KERNEL
	37	#include <sys/nvpair.h>
	38	#endif /* _KERNEL */
	39
	40	#ifdef __cplusplus
	41	extern "C" {
	42	#endif
	43
a08ee875 LG	44	/*
	45	* The structures in this file are passed between userland and the
	46	* kernel. Userland may be running a 32-bit process, while the kernel
	47	* is 64-bit. Therefore, these structures need to compile the same in
	48	* 32-bit and 64-bit. This means not using type "long", and adding
	49	* explicit padding so that the 32-bit structure will not be packed more
	50	* tightly than the 64-bit structure (which requires 64-bit alignment).
	51	*/
	52
34dc7c2f BB	53	/*
	54	* Property values for snapdir
	55	*/
	56	#define ZFS_SNAPDIR_HIDDEN 0
	57	#define ZFS_SNAPDIR_VISIBLE 1
	58
0b4d1b58 ED	59	/*
	60	* Property values for snapdev
	61	*/
	62	#define ZFS_SNAPDEV_HIDDEN 0
	63	#define ZFS_SNAPDEV_VISIBLE 1
a08ee875 LG	64	/*
	65	* Property values for acltype
	66	*/
	67	#define ZFS_ACLTYPE_OFF 0
	68	#define ZFS_ACLTYPE_POSIXACL 1
0b4d1b58	69
428870ff BB	70	/*
	71	* Field manipulation macros for the drr_versioninfo field of the
	72	* send stream header.
	73	*/
	74
	75	/*
	76	* Header types for zfs send streams.
	77	*/
	78	typedef enum drr_headertype {
	79	DMU_SUBSTREAM = 0x1,
	80	DMU_COMPOUNDSTREAM = 0x2
	81	} drr_headertype_t;
	82
	83	#define DMU_GET_STREAM_HDRTYPE(vi) BF64_GET((vi), 0, 2)
	84	#define DMU_SET_STREAM_HDRTYPE(vi, x) BF64_SET((vi), 0, 2, x)
	85
	86	#define DMU_GET_FEATUREFLAGS(vi) BF64_GET((vi), 2, 30)
	87	#define DMU_SET_FEATUREFLAGS(vi, x) BF64_SET((vi), 2, 30, x)
	88
	89	/*
	90	* Feature flags for zfs send streams (flags in drr_versioninfo)
	91	*/
	92
ea04106b AX	93	#define DMU_BACKUP_FEATURE_DEDUP (1<<0)
	94	#define DMU_BACKUP_FEATURE_DEDUPPROPS (1<<1)
	95	#define DMU_BACKUP_FEATURE_SA_SPILL (1<<2)
	96	/* flags #3 - #15 are reserved for incompatible closed-source implementations */
	97	#define DMU_BACKUP_FEATURE_EMBED_DATA (1<<16)
	98	#define DMU_BACKUP_FEATURE_EMBED_DATA_LZ4 (1<<17)
428870ff BB	99
	100	/*
	101	* Mask of all supported backup features
	102	*/
	103	#define DMU_BACKUP_FEATURE_MASK (DMU_BACKUP_FEATURE_DEDUP \| \
ea04106b AX	104	DMU_BACKUP_FEATURE_DEDUPPROPS \| DMU_BACKUP_FEATURE_SA_SPILL \| \
ea04106b AX	105	DMU_BACKUP_FEATURE_EMBED_DATA \| DMU_BACKUP_FEATURE_EMBED_DATA_LZ4)
428870ff BB	106
	107	/* Are all features in the given flag word currently supported? */
	108	#define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK))
	109
	110	/*
	111	* The drr_versioninfo field of the dmu_replay_record has the
	112	* following layout:
	113	*
	114	* 64 56 48 40 32 24 16 8 0
	115	* +-------+-------+-------+-------+-------+-------+-------+-------+
	116	* \| reserved \| feature-flags \|C\|S\|
	117	* +-------+-------+-------+-------+-------+-------+-------+-------+
	118	*
	119	* The low order two bits indicate the header type: SUBSTREAM (0x1)
	120	* or COMPOUNDSTREAM (0x2). Using two bits for this is historical:
	121	* this field used to be a version number, where the two version types
	122	* were 1 and 2. Using two bits for this allows earlier versions of
	123	* the code to be able to recognize send streams that don't use any
	124	* of the features indicated by feature flags.
	125	*/
	126
34dc7c2f BB	127	#define DMU_BACKUP_MAGIC 0x2F5bacbacULL
	128
	129	#define DRR_FLAG_CLONE (1<<0)
	130	#define DRR_FLAG_CI_DATA (1<<1)
	131
428870ff BB	132	/*
	133	* flags in the drr_checksumflags field in the DRR_WRITE and
	134	* DRR_WRITE_BYREF blocks
	135	*/
	136	#define DRR_CHECKSUM_DEDUP (1<<0)
	137
	138	#define DRR_IS_DEDUP_CAPABLE(flags) ((flags) & DRR_CHECKSUM_DEDUP)
	139
34dc7c2f BB	140	/*
	141	* zfs ioctl command structure
	142	*/
	143	typedef struct dmu_replay_record {
	144	enum {
	145	DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
428870ff	146	DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF,
ea04106b	147	DRR_SPILL, DRR_WRITE_EMBEDDED, DRR_NUMTYPES
34dc7c2f BB	148	} drr_type;
	149	uint32_t drr_payloadlen;
	150	union {
	151	struct drr_begin {
	152	uint64_t drr_magic;
428870ff	153	uint64_t drr_versioninfo; /* was drr_version */
34dc7c2f BB	154	uint64_t drr_creation_time;
	155	dmu_objset_type_t drr_type;
	156	uint32_t drr_flags;
	157	uint64_t drr_toguid;
	158	uint64_t drr_fromguid;
	159	char drr_toname[MAXNAMELEN];
	160	} drr_begin;
	161	struct drr_end {
	162	zio_cksum_t drr_checksum;
428870ff	163	uint64_t drr_toguid;
34dc7c2f BB	164	} drr_end;
	165	struct drr_object {
	166	uint64_t drr_object;
	167	dmu_object_type_t drr_type;
	168	dmu_object_type_t drr_bonustype;
	169	uint32_t drr_blksz;
	170	uint32_t drr_bonuslen;
428870ff	171	uint8_t drr_checksumtype;
34dc7c2f BB	172	uint8_t drr_compress;
34dc7c2f BB	173	uint8_t drr_pad[6];
428870ff	174	uint64_t drr_toguid;
34dc7c2f BB	175	/* bonus content follows */
	176	} drr_object;
	177	struct drr_freeobjects {
	178	uint64_t drr_firstobj;
	179	uint64_t drr_numobjs;
428870ff	180	uint64_t drr_toguid;
34dc7c2f BB	181	} drr_freeobjects;
	182	struct drr_write {
	183	uint64_t drr_object;
	184	dmu_object_type_t drr_type;
	185	uint32_t drr_pad;
	186	uint64_t drr_offset;
	187	uint64_t drr_length;
428870ff BB	188	uint64_t drr_toguid;
	189	uint8_t drr_checksumtype;
	190	uint8_t drr_checksumflags;
	191	uint8_t drr_pad2[6];
	192	ddt_key_t drr_key; /* deduplication key */
34dc7c2f BB	193	/* content follows */
	194	} drr_write;
	195	struct drr_free {
	196	uint64_t drr_object;
	197	uint64_t drr_offset;
	198	uint64_t drr_length;
428870ff	199	uint64_t drr_toguid;
34dc7c2f	200	} drr_free;
428870ff BB	201	struct drr_write_byref {
	202	/* where to put the data */
	203	uint64_t drr_object;
	204	uint64_t drr_offset;
	205	uint64_t drr_length;
	206	uint64_t drr_toguid;
	207	/* where to find the prior copy of the data */
	208	uint64_t drr_refguid;
	209	uint64_t drr_refobject;
	210	uint64_t drr_refoffset;
	211	/* properties of the data */
	212	uint8_t drr_checksumtype;
	213	uint8_t drr_checksumflags;
	214	uint8_t drr_pad2[6];
	215	ddt_key_t drr_key; /* deduplication key */
	216	} drr_write_byref;
	217	struct drr_spill {
	218	uint64_t drr_object;
	219	uint64_t drr_length;
	220	uint64_t drr_toguid;
	221	uint64_t drr_pad[4]; /* needed for crypto */
	222	/* spill data follows */
	223	} drr_spill;
ea04106b AX	224	struct drr_write_embedded {
	225	uint64_t drr_object;
	226	uint64_t drr_offset;
	227	/* logical length, should equal blocksize */
	228	uint64_t drr_length;
	229	uint64_t drr_toguid;
	230	uint8_t drr_compression;
	231	uint8_t drr_etype;
	232	uint8_t drr_pad[6];
	233	uint32_t drr_lsize; /* uncompressed size of payload */
	234	uint32_t drr_psize; /* compr. (real) size of payload */
	235	/* (possibly compressed) content follows */
	236	} drr_write_embedded;
34dc7c2f BB	237	} drr_u;
	238	} dmu_replay_record_t;
	239
572e2857 BB	240	/* diff record range types */
	241	typedef enum diff_type {
	242	DDR_NONE = 0x1,
	243	DDR_INUSE = 0x2,
	244	DDR_FREE = 0x4
	245	} diff_type_t;
	246
	247	/*
	248	* The diff reports back ranges of free or in-use objects.
	249	*/
	250	typedef struct dmu_diff_record {
	251	uint64_t ddr_type;
	252	uint64_t ddr_first;
	253	uint64_t ddr_last;
	254	} dmu_diff_record_t;
	255
34dc7c2f BB	256	typedef struct zinject_record {
	257	uint64_t zi_objset;
	258	uint64_t zi_object;
	259	uint64_t zi_start;
	260	uint64_t zi_end;
	261	uint64_t zi_guid;
	262	uint32_t zi_level;
	263	uint32_t zi_error;
	264	uint64_t zi_type;
	265	uint32_t zi_freq;
9babb374	266	uint32_t zi_failfast;
428870ff BB	267	char zi_func[MAXNAMELEN];
	268	uint32_t zi_iotype;
	269	int32_t zi_duration;
	270	uint64_t zi_timer;
c06d4368 AX	271	uint32_t zi_cmd;
c06d4368 AX	272	uint32_t zi_pad;
34dc7c2f BB	273	} zinject_record_t;
	274
	275	#define ZINJECT_NULL 0x1
	276	#define ZINJECT_FLUSH_ARC 0x2
	277	#define ZINJECT_UNLOAD_SPA 0x4
	278
ea04106b	279	#define ZEVENT_NONE 0x0
26685276 BB	280	#define ZEVENT_NONBLOCK 0x1
	281	#define ZEVENT_SIZE 1024
	282
ea04106b AX	283	#define ZEVENT_SEEK_START 0
	284	#define ZEVENT_SEEK_END UINT64_MAX
	285
c06d4368 AX	286	typedef enum zinject_type {
	287	ZINJECT_UNINITIALIZED,
	288	ZINJECT_DATA_FAULT,
	289	ZINJECT_DEVICE_FAULT,
	290	ZINJECT_LABEL_FAULT,
	291	ZINJECT_IGNORED_WRITES,
	292	ZINJECT_PANIC,
	293	ZINJECT_DELAY_IO,
	294	} zinject_type_t;
	295
34dc7c2f BB	296	typedef struct zfs_share {
	297	uint64_t z_exportdata;
	298	uint64_t z_sharedata;
	299	uint64_t z_sharetype; /* 0 = share, 1 = unshare */
	300	uint64_t z_sharemax; /* max length of share string */
	301	} zfs_share_t;
	302
	303	/*
	304	* ZFS file systems may behave the usual, POSIX-compliant way, where
	305	* name lookups are case-sensitive. They may also be set up so that
	306	* all the name lookups are case-insensitive, or so that only some
	307	* lookups, the ones that set an FIGNORECASE flag, are case-insensitive.
	308	*/
	309	typedef enum zfs_case {
	310	ZFS_CASE_SENSITIVE,
	311	ZFS_CASE_INSENSITIVE,
	312	ZFS_CASE_MIXED
	313	} zfs_case_t;
	314
	315	typedef struct zfs_cmd {
a08ee875 LG	316	char zc_name[MAXPATHLEN]; /* name of pool or dataset */
	317	uint64_t zc_nvlist_src; /* really (char ) /
	318	uint64_t zc_nvlist_src_size;
	319	uint64_t zc_nvlist_dst; /* really (char ) /
	320	uint64_t zc_nvlist_dst_size;
	321	boolean_t zc_nvlist_dst_filled; /* put an nvlist in dst? */
	322	int zc_pad2;
	323
	324	/*
	325	* The following members are for legacy ioctls which haven't been
	326	* converted to the new method.
	327	*/
	328	uint64_t zc_history; /* really (char ) /
34dc7c2f BB	329	char zc_value[MAXPATHLEN * 2];
	330	char zc_string[MAXNAMELEN];
	331	uint64_t zc_guid;
	332	uint64_t zc_nvlist_conf; /* really (char ) /
	333	uint64_t zc_nvlist_conf_size;
34dc7c2f BB	334	uint64_t zc_cookie;
	335	uint64_t zc_objset_type;
	336	uint64_t zc_perm_action;
a08ee875	337	uint64_t zc_history_len;
34dc7c2f BB	338	uint64_t zc_history_offset;
34dc7c2f BB	339	uint64_t zc_obj;
9babb374	340	uint64_t zc_iflags; /* internal to zfs(7fs) */
34dc7c2f BB	341	zfs_share_t zc_share;
	342	dmu_objset_stats_t zc_objset_stats;
	343	struct drr_begin zc_begin_record;
	344	zinject_record_t zc_inject_record;
ea04106b AX	345	uint32_t zc_defer_destroy;
ea04106b AX	346	uint32_t zc_flags;
572e2857 BB	347	uint64_t zc_action_handle;
572e2857 BB	348	int zc_cleanup_fd;
0cee2406 PJD	349	uint8_t zc_simple;
0cee2406 PJD	350	uint8_t zc_pad[3]; /* alignment */
572e2857 BB	351	uint64_t zc_sendobj;
	352	uint64_t zc_fromobj;
	353	uint64_t zc_createtxg;
	354	zfs_stat_t zc_stat;
34dc7c2f BB	355	} zfs_cmd_t;
34dc7c2f BB	356
9babb374 BB	357	typedef struct zfs_useracct {
	358	char zu_domain[256];
	359	uid_t zu_rid;
	360	uint32_t zu_pad;
	361	uint64_t zu_space;
	362	} zfs_useracct_t;
	363
572e2857 BB	364	#define ZFSDEV_MAX_MINOR (1 << 16)
572e2857 BB	365	#define ZFS_MIN_MINOR (ZFSDEV_MAX_MINOR + 1)
34dc7c2f	366
428870ff BB	367	#define ZPOOL_EXPORT_AFTER_SPLIT 0x1
428870ff BB	368
34dc7c2f BB	369	#ifdef _KERNEL
	370
	371	typedef struct zfs_creat {
	372	nvlist_t *zct_zplprops;
	373	nvlist_t *zct_props;
	374	} zfs_creat_t;
	375
34dc7c2f BB	376	extern int zfs_secpolicy_snapshot_perms(const char name, cred_t cr);
	377	extern int zfs_secpolicy_rename_perms(const char *from,
	378	const char to, cred_t cr);
	379	extern int zfs_secpolicy_destroy_perms(const char name, cred_t cr);
a08ee875 LG	380	extern int zfs_unmount_snap(const char *);
	381	extern void zfs_destroy_unmount_origin(const char *);
	382
	383	extern boolean_t dataset_name_hidden(const char *name);
34dc7c2f	384
325f0235 BB	385	enum zfsdev_state_type {
	386	ZST_ONEXIT,
	387	ZST_ZEVENT,
	388	ZST_ALL,
572e2857 BB	389	};
572e2857 BB	390
ea04106b AX	391	/*
	392	* The zfsdev_state_t structure is managed as a singly-linked list
	393	* from which items are never deleted. This allows for lock-free
	394	* reading of the list so long as assignments to the zs_next and
	395	* reads from zs_minor are performed atomically. Empty items are
	396	* indicated by storing -1 into zs_minor.
	397	*/
325f0235	398	typedef struct zfsdev_state {
ea04106b	399	struct zfsdev_state zs_next; / next zfsdev_state_t link */
325f0235 BB	400	struct file zs_file; / associated file struct */
	401	minor_t zs_minor; /* made up minor number */
	402	void zs_onexit; / onexit data */
	403	void zs_zevent; / zevent data */
	404	} zfsdev_state_t;
572e2857	405
325f0235 BB	406	extern void *zfsdev_get_state(minor_t minor, enum zfsdev_state_type which);
325f0235 BB	407	extern minor_t zfsdev_getminor(struct file *filp);
572e2857 BB	408	extern minor_t zfsdev_minor_alloc(void);
572e2857 BB	409
34dc7c2f BB	410	#endif /* _KERNEL */
	411
	412	#ifdef __cplusplus
	413	}
	414	#endif
	415
	416	#endif /* _SYS_ZFS_IOCTL_H */