xref: /illumos-gate/usr/src/uts/common/sys/fs/zfs.h (revision 3baa08fc5b6bea08a475b0cfe3ad161d74c5864b)
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 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef	_SYS_FS_ZFS_H
27 #define	_SYS_FS_ZFS_H
28 
29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
30 
31 #ifdef	__cplusplus
32 extern "C" {
33 #endif
34 
35 /*
36  * Types and constants shared between userland and the kernel.
37  */
38 
39 /*
40  * Each dataset can be one of the following types.  These constants can be
41  * combined into masks that can be passed to various functions.
42  */
43 typedef enum {
44 	ZFS_TYPE_FILESYSTEM	= 0x1,
45 	ZFS_TYPE_SNAPSHOT	= 0x2,
46 	ZFS_TYPE_VOLUME		= 0x4,
47 	ZFS_TYPE_POOL		= 0x8
48 } zfs_type_t;
49 
50 #define	ZFS_TYPE_DATASET	\
51 	(ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME | ZFS_TYPE_SNAPSHOT)
52 
53 /*
54  * Dataset properties are identified by these constants and must be added to
55  * the end of this list to ensure that external consumers are not affected
56  * by the change. If you make any changes to this list, be sure to update
57  * the property table in usr/src/common/zfs/zfs_prop.c.
58  */
59 typedef enum {
60 	ZFS_PROP_TYPE,
61 	ZFS_PROP_CREATION,
62 	ZFS_PROP_USED,
63 	ZFS_PROP_AVAILABLE,
64 	ZFS_PROP_REFERENCED,
65 	ZFS_PROP_COMPRESSRATIO,
66 	ZFS_PROP_MOUNTED,
67 	ZFS_PROP_ORIGIN,
68 	ZFS_PROP_QUOTA,
69 	ZFS_PROP_RESERVATION,
70 	ZFS_PROP_VOLSIZE,
71 	ZFS_PROP_VOLBLOCKSIZE,
72 	ZFS_PROP_RECORDSIZE,
73 	ZFS_PROP_MOUNTPOINT,
74 	ZFS_PROP_SHARENFS,
75 	ZFS_PROP_CHECKSUM,
76 	ZFS_PROP_COMPRESSION,
77 	ZFS_PROP_ATIME,
78 	ZFS_PROP_DEVICES,
79 	ZFS_PROP_EXEC,
80 	ZFS_PROP_SETUID,
81 	ZFS_PROP_READONLY,
82 	ZFS_PROP_ZONED,
83 	ZFS_PROP_SNAPDIR,
84 	ZFS_PROP_ACLMODE,
85 	ZFS_PROP_ACLINHERIT,
86 	ZFS_PROP_CREATETXG,		/* not exposed to the user */
87 	ZFS_PROP_NAME,			/* not exposed to the user */
88 	ZFS_PROP_CANMOUNT,
89 	ZFS_PROP_SHAREISCSI,
90 	ZFS_PROP_ISCSIOPTIONS,		/* not exposed to the user */
91 	ZFS_PROP_XATTR,
92 	ZFS_PROP_NUMCLONES,		/* not exposed to the user */
93 	ZFS_PROP_COPIES,
94 	ZFS_PROP_VERSION,
95 	ZFS_PROP_UTF8ONLY,
96 	ZFS_PROP_NORMALIZE,
97 	ZFS_PROP_CASE,
98 	ZFS_PROP_VSCAN,
99 	ZFS_PROP_NBMAND,
100 	ZFS_PROP_SHARESMB,
101 	ZFS_PROP_REFQUOTA,
102 	ZFS_PROP_REFRESERVATION,
103 	ZFS_PROP_GUID,
104 	ZFS_PROP_PRIMARYCACHE,
105 	ZFS_PROP_SECONDARYCACHE,
106 	ZFS_NUM_PROPS
107 } zfs_prop_t;
108 
109 /*
110  * Pool properties are identified by these constants and must be added to the
111  * end of this list to ensure that external conumsers are not affected
112  * by the change. If you make any changes to this list, be sure to update
113  * the property table in usr/src/common/zfs/zpool_prop.c.
114  */
115 typedef enum {
116 	ZPOOL_PROP_NAME,
117 	ZPOOL_PROP_SIZE,
118 	ZPOOL_PROP_USED,
119 	ZPOOL_PROP_AVAILABLE,
120 	ZPOOL_PROP_CAPACITY,
121 	ZPOOL_PROP_ALTROOT,
122 	ZPOOL_PROP_HEALTH,
123 	ZPOOL_PROP_GUID,
124 	ZPOOL_PROP_VERSION,
125 	ZPOOL_PROP_BOOTFS,
126 	ZPOOL_PROP_DELEGATION,
127 	ZPOOL_PROP_AUTOREPLACE,
128 	ZPOOL_PROP_CACHEFILE,
129 	ZPOOL_PROP_FAILUREMODE,
130 	ZPOOL_NUM_PROPS
131 } zpool_prop_t;
132 
133 #define	ZPROP_CONT		-2
134 #define	ZPROP_INVAL		-1
135 
136 #define	ZPROP_VALUE		"value"
137 #define	ZPROP_SOURCE		"source"
138 
139 typedef enum {
140 	ZPROP_SRC_NONE = 0x1,
141 	ZPROP_SRC_DEFAULT = 0x2,
142 	ZPROP_SRC_TEMPORARY = 0x4,
143 	ZPROP_SRC_LOCAL = 0x8,
144 	ZPROP_SRC_INHERITED = 0x10
145 } zprop_source_t;
146 
147 #define	ZPROP_SRC_ALL	0x1f
148 
149 typedef int (*zprop_func)(int, void *);
150 
151 /*
152  * Properties to be set on the root file system of a new pool
153  * are stuffed into their own nvlist, which is then included in
154  * the properties nvlist with the pool properties.
155  */
156 #define	ZPOOL_ROOTFS_PROPS	"root-props-nvl"
157 
158 /*
159  * Dataset property functions shared between libzfs and kernel.
160  */
161 const char *zfs_prop_default_string(zfs_prop_t);
162 uint64_t zfs_prop_default_numeric(zfs_prop_t);
163 boolean_t zfs_prop_readonly(zfs_prop_t);
164 boolean_t zfs_prop_inheritable(zfs_prop_t);
165 boolean_t zfs_prop_setonce(zfs_prop_t);
166 const char *zfs_prop_to_name(zfs_prop_t);
167 zfs_prop_t zfs_name_to_prop(const char *);
168 boolean_t zfs_prop_user(const char *);
169 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
170 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
171 boolean_t zfs_prop_valid_for_type(int, zfs_type_t);
172 
173 /*
174  * Pool property functions shared between libzfs and kernel.
175  */
176 zpool_prop_t zpool_name_to_prop(const char *);
177 const char *zpool_prop_to_name(zpool_prop_t);
178 const char *zpool_prop_default_string(zpool_prop_t);
179 uint64_t zpool_prop_default_numeric(zpool_prop_t);
180 boolean_t zpool_prop_readonly(zpool_prop_t);
181 int zpool_prop_index_to_string(zpool_prop_t, uint64_t, const char **);
182 int zpool_prop_string_to_index(zpool_prop_t, const char *, uint64_t *);
183 
184 /*
185  * Definitions for the Delegation.
186  */
187 typedef enum {
188 	ZFS_DELEG_WHO_UNKNOWN = 0,
189 	ZFS_DELEG_USER = 'u',
190 	ZFS_DELEG_USER_SETS = 'U',
191 	ZFS_DELEG_GROUP = 'g',
192 	ZFS_DELEG_GROUP_SETS = 'G',
193 	ZFS_DELEG_EVERYONE = 'e',
194 	ZFS_DELEG_EVERYONE_SETS = 'E',
195 	ZFS_DELEG_CREATE = 'c',
196 	ZFS_DELEG_CREATE_SETS = 'C',
197 	ZFS_DELEG_NAMED_SET = 's',
198 	ZFS_DELEG_NAMED_SET_SETS = 'S'
199 } zfs_deleg_who_type_t;
200 
201 typedef enum {
202 	ZFS_DELEG_NONE = 0,
203 	ZFS_DELEG_PERM_LOCAL = 1,
204 	ZFS_DELEG_PERM_DESCENDENT = 2,
205 	ZFS_DELEG_PERM_LOCALDESCENDENT = 3,
206 	ZFS_DELEG_PERM_CREATE = 4
207 } zfs_deleg_inherit_t;
208 
209 #define	ZFS_DELEG_PERM_UID	"uid"
210 #define	ZFS_DELEG_PERM_GID	"gid"
211 #define	ZFS_DELEG_PERM_GROUPS	"groups"
212 
213 typedef enum {
214 	ZFS_CANMOUNT_OFF = 0,
215 	ZFS_CANMOUNT_ON = 1,
216 	ZFS_CANMOUNT_NOAUTO = 2
217 } zfs_canmount_type_t;
218 
219 typedef enum zfs_share_op {
220 	ZFS_SHARE_NFS = 0,
221 	ZFS_UNSHARE_NFS = 1,
222 	ZFS_SHARE_SMB = 2,
223 	ZFS_UNSHARE_SMB = 3
224 } zfs_share_op_t;
225 
226 typedef enum zfs_cache_type {
227 	ZFS_CACHE_NONE = 0,
228 	ZFS_CACHE_METADATA = 1,
229 	ZFS_CACHE_ALL = 2
230 } zfs_cache_type_t;
231 
232 
233 /*
234  * On-disk version number.
235  */
236 #define	SPA_VERSION_1			1ULL
237 #define	SPA_VERSION_2			2ULL
238 #define	SPA_VERSION_3			3ULL
239 #define	SPA_VERSION_4			4ULL
240 #define	SPA_VERSION_5			5ULL
241 #define	SPA_VERSION_6			6ULL
242 #define	SPA_VERSION_7			7ULL
243 #define	SPA_VERSION_8			8ULL
244 #define	SPA_VERSION_9			9ULL
245 #define	SPA_VERSION_10			10ULL
246 #define	SPA_VERSION_11			11ULL
247 /*
248  * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk
249  * format change. Go to usr/src/grub/grub-0.95/stage2/{zfs-include/, fsys_zfs*},
250  * and do the appropriate changes.
251  */
252 #define	SPA_VERSION			SPA_VERSION_11
253 #define	SPA_VERSION_STRING		"11"
254 
255 /*
256  * Symbolic names for the changes that caused a SPA_VERSION switch.
257  * Used in the code when checking for presence or absence of a feature.
258  * Feel free to define multiple symbolic names for each version if there
259  * were multiple changes to on-disk structures during that version.
260  *
261  * NOTE: When checking the current SPA_VERSION in your code, be sure
262  *       to use spa_version() since it reports the version of the
263  *       last synced uberblock.  Checking the in-flight version can
264  *       be dangerous in some cases.
265  */
266 #define	SPA_VERSION_INITIAL		SPA_VERSION_1
267 #define	SPA_VERSION_DITTO_BLOCKS	SPA_VERSION_2
268 #define	SPA_VERSION_SPARES		SPA_VERSION_3
269 #define	SPA_VERSION_RAID6		SPA_VERSION_3
270 #define	SPA_VERSION_BPLIST_ACCOUNT	SPA_VERSION_3
271 #define	SPA_VERSION_RAIDZ_DEFLATE	SPA_VERSION_3
272 #define	SPA_VERSION_DNODE_BYTES		SPA_VERSION_3
273 #define	SPA_VERSION_ZPOOL_HISTORY	SPA_VERSION_4
274 #define	SPA_VERSION_GZIP_COMPRESSION	SPA_VERSION_5
275 #define	SPA_VERSION_BOOTFS		SPA_VERSION_6
276 #define	SPA_VERSION_SLOGS		SPA_VERSION_7
277 #define	SPA_VERSION_DELEGATED_PERMS	SPA_VERSION_8
278 #define	SPA_VERSION_FUID		SPA_VERSION_9
279 #define	SPA_VERSION_REFRESERVATION	SPA_VERSION_9
280 #define	SPA_VERSION_REFQUOTA		SPA_VERSION_9
281 #define	SPA_VERSION_UNIQUE_ACCURATE	SPA_VERSION_9
282 #define	SPA_VERSION_L2CACHE		SPA_VERSION_10
283 #define	SPA_VERSION_NEXT_CLONES		SPA_VERSION_11
284 #define	SPA_VERSION_ORIGIN		SPA_VERSION_11
285 #define	SPA_VERSION_DSL_SCRUB		SPA_VERSION_11
286 
287 /*
288  * ZPL version - rev'd whenever an incompatible on-disk format change
289  * occurs.  This is independent of SPA/DMU/ZAP versioning.  You must
290  * also update the version_table[] and help message in zfs_prop.c.
291  *
292  * When changing, be sure to teach GRUB how to read the new format!
293  * See usr/src/grub/grub-0.95/stage2/{zfs-include/,fsys_zfs*}
294  */
295 #define	ZPL_VERSION_1			1ULL
296 #define	ZPL_VERSION_2			2ULL
297 #define	ZPL_VERSION_3			3ULL
298 #define	ZPL_VERSION			ZPL_VERSION_3
299 #define	ZPL_VERSION_STRING		"3"
300 
301 #define	ZPL_VERSION_INITIAL		ZPL_VERSION_1
302 #define	ZPL_VERSION_DIRENT_TYPE		ZPL_VERSION_2
303 #define	ZPL_VERSION_FUID		ZPL_VERSION_3
304 #define	ZPL_VERSION_NORMALIZATION	ZPL_VERSION_3
305 #define	ZPL_VERSION_SYSATTR		ZPL_VERSION_3
306 
307 /*
308  * The following are configuration names used in the nvlist describing a pool's
309  * configuration.
310  */
311 #define	ZPOOL_CONFIG_VERSION		"version"
312 #define	ZPOOL_CONFIG_POOL_NAME		"name"
313 #define	ZPOOL_CONFIG_POOL_STATE		"state"
314 #define	ZPOOL_CONFIG_POOL_TXG		"txg"
315 #define	ZPOOL_CONFIG_POOL_GUID		"pool_guid"
316 #define	ZPOOL_CONFIG_CREATE_TXG		"create_txg"
317 #define	ZPOOL_CONFIG_TOP_GUID		"top_guid"
318 #define	ZPOOL_CONFIG_VDEV_TREE		"vdev_tree"
319 #define	ZPOOL_CONFIG_TYPE		"type"
320 #define	ZPOOL_CONFIG_CHILDREN		"children"
321 #define	ZPOOL_CONFIG_ID			"id"
322 #define	ZPOOL_CONFIG_GUID		"guid"
323 #define	ZPOOL_CONFIG_PATH		"path"
324 #define	ZPOOL_CONFIG_DEVID		"devid"
325 #define	ZPOOL_CONFIG_METASLAB_ARRAY	"metaslab_array"
326 #define	ZPOOL_CONFIG_METASLAB_SHIFT	"metaslab_shift"
327 #define	ZPOOL_CONFIG_ASHIFT		"ashift"
328 #define	ZPOOL_CONFIG_ASIZE		"asize"
329 #define	ZPOOL_CONFIG_DTL		"DTL"
330 #define	ZPOOL_CONFIG_STATS		"stats"
331 #define	ZPOOL_CONFIG_WHOLE_DISK		"whole_disk"
332 #define	ZPOOL_CONFIG_ERRCOUNT		"error_count"
333 #define	ZPOOL_CONFIG_NOT_PRESENT	"not_present"
334 #define	ZPOOL_CONFIG_SPARES		"spares"
335 #define	ZPOOL_CONFIG_IS_SPARE		"is_spare"
336 #define	ZPOOL_CONFIG_NPARITY		"nparity"
337 #define	ZPOOL_CONFIG_HOSTID		"hostid"
338 #define	ZPOOL_CONFIG_HOSTNAME		"hostname"
339 #define	ZPOOL_CONFIG_UNSPARE		"unspare"
340 #define	ZPOOL_CONFIG_PHYS_PATH		"phys_path"
341 #define	ZPOOL_CONFIG_IS_LOG		"is_log"
342 #define	ZPOOL_CONFIG_L2CACHE		"l2cache"
343 #define	ZPOOL_CONFIG_TIMESTAMP		"timestamp"	/* not stored on disk */
344 #define	ZPOOL_CONFIG_BOOTFS		"bootfs"	/* not stored on disk */
345 /*
346  * The persistent vdev state is stored as separate values rather than a single
347  * 'vdev_state' entry.  This is because a device can be in multiple states, such
348  * as offline and degraded.
349  */
350 #define	ZPOOL_CONFIG_OFFLINE		"offline"
351 #define	ZPOOL_CONFIG_FAULTED		"faulted"
352 #define	ZPOOL_CONFIG_DEGRADED		"degraded"
353 #define	ZPOOL_CONFIG_REMOVED		"removed"
354 
355 #define	VDEV_TYPE_ROOT			"root"
356 #define	VDEV_TYPE_MIRROR		"mirror"
357 #define	VDEV_TYPE_REPLACING		"replacing"
358 #define	VDEV_TYPE_RAIDZ			"raidz"
359 #define	VDEV_TYPE_DISK			"disk"
360 #define	VDEV_TYPE_FILE			"file"
361 #define	VDEV_TYPE_MISSING		"missing"
362 #define	VDEV_TYPE_SPARE			"spare"
363 #define	VDEV_TYPE_LOG			"log"
364 #define	VDEV_TYPE_L2CACHE		"l2cache"
365 
366 /*
367  * This is needed in userland to report the minimum necessary device size.
368  */
369 #define	SPA_MINDEVSIZE		(64ULL << 20)
370 
371 /*
372  * The location of the pool configuration repository, shared between kernel and
373  * userland.
374  */
375 #define	ZPOOL_CACHE		"/etc/zfs/zpool.cache"
376 
377 /*
378  * vdev states are ordered from least to most healthy.
379  * A vdev that's CANT_OPEN or below is considered unusable.
380  */
381 typedef enum vdev_state {
382 	VDEV_STATE_UNKNOWN = 0,	/* Uninitialized vdev			*/
383 	VDEV_STATE_CLOSED,	/* Not currently open			*/
384 	VDEV_STATE_OFFLINE,	/* Not allowed to open			*/
385 	VDEV_STATE_REMOVED,	/* Explicitly removed from system	*/
386 	VDEV_STATE_CANT_OPEN,	/* Tried to open, but failed		*/
387 	VDEV_STATE_FAULTED,	/* External request to fault device	*/
388 	VDEV_STATE_DEGRADED,	/* Replicated vdev with unhealthy kids	*/
389 	VDEV_STATE_HEALTHY	/* Presumed good			*/
390 } vdev_state_t;
391 
392 #define	VDEV_STATE_ONLINE	VDEV_STATE_HEALTHY
393 
394 /*
395  * vdev aux states.  When a vdev is in the CANT_OPEN state, the aux field
396  * of the vdev stats structure uses these constants to distinguish why.
397  */
398 typedef enum vdev_aux {
399 	VDEV_AUX_NONE,		/* no error				*/
400 	VDEV_AUX_OPEN_FAILED,	/* ldi_open_*() or vn_open() failed	*/
401 	VDEV_AUX_CORRUPT_DATA,	/* bad label or disk contents		*/
402 	VDEV_AUX_NO_REPLICAS,	/* insufficient number of replicas	*/
403 	VDEV_AUX_BAD_GUID_SUM,	/* vdev guid sum doesn't match		*/
404 	VDEV_AUX_TOO_SMALL,	/* vdev size is too small		*/
405 	VDEV_AUX_BAD_LABEL,	/* the label is OK but invalid		*/
406 	VDEV_AUX_VERSION_NEWER,	/* on-disk version is too new		*/
407 	VDEV_AUX_VERSION_OLDER,	/* on-disk version is too old		*/
408 	VDEV_AUX_SPARED,	/* hot spare used in another pool	*/
409 	VDEV_AUX_ERR_EXCEEDED,	/* too many errors			*/
410 	VDEV_AUX_IO_FAILURE	/* experienced I/O failure		*/
411 } vdev_aux_t;
412 
413 /*
414  * pool state.  The following states are written to disk as part of the normal
415  * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE.  The remaining
416  * states are software abstractions used at various levels to communicate
417  * pool state.
418  */
419 typedef enum pool_state {
420 	POOL_STATE_ACTIVE = 0,		/* In active use		*/
421 	POOL_STATE_EXPORTED,		/* Explicitly exported		*/
422 	POOL_STATE_DESTROYED,		/* Explicitly destroyed		*/
423 	POOL_STATE_SPARE,		/* Reserved for hot spare use	*/
424 	POOL_STATE_L2CACHE,		/* Level 2 ARC device		*/
425 	POOL_STATE_UNINITIALIZED,	/* Internal spa_t state		*/
426 	POOL_STATE_IO_FAILURE,		/* Internal pool state		*/
427 	POOL_STATE_UNAVAIL,		/* Internal libzfs state	*/
428 	POOL_STATE_POTENTIALLY_ACTIVE	/* Internal libzfs state	*/
429 } pool_state_t;
430 
431 /*
432  * Scrub types.
433  */
434 typedef enum pool_scrub_type {
435 	POOL_SCRUB_NONE,
436 	POOL_SCRUB_RESILVER,
437 	POOL_SCRUB_EVERYTHING,
438 	POOL_SCRUB_TYPES
439 } pool_scrub_type_t;
440 
441 /*
442  * ZIO types.  Needed to interpret vdev statistics below.
443  */
444 typedef enum zio_type {
445 	ZIO_TYPE_NULL = 0,
446 	ZIO_TYPE_READ,
447 	ZIO_TYPE_WRITE,
448 	ZIO_TYPE_FREE,
449 	ZIO_TYPE_CLAIM,
450 	ZIO_TYPE_IOCTL,
451 	ZIO_TYPES
452 } zio_type_t;
453 
454 /*
455  * Vdev statistics.  Note: all fields should be 64-bit because this
456  * is passed between kernel and userland as an nvlist uint64 array.
457  */
458 typedef struct vdev_stat {
459 	hrtime_t	vs_timestamp;		/* time since vdev load	*/
460 	uint64_t	vs_state;		/* vdev state		*/
461 	uint64_t	vs_aux;			/* see vdev_aux_t	*/
462 	uint64_t	vs_alloc;		/* space allocated	*/
463 	uint64_t	vs_space;		/* total capacity	*/
464 	uint64_t	vs_dspace;		/* deflated capacity	*/
465 	uint64_t	vs_rsize;		/* replaceable dev size */
466 	uint64_t	vs_ops[ZIO_TYPES];	/* operation count	*/
467 	uint64_t	vs_bytes[ZIO_TYPES];	/* bytes read/written	*/
468 	uint64_t	vs_read_errors;		/* read errors		*/
469 	uint64_t	vs_write_errors;	/* write errors		*/
470 	uint64_t	vs_checksum_errors;	/* checksum errors	*/
471 	uint64_t	vs_self_healed;		/* self-healed bytes	*/
472 	uint64_t	vs_scrub_type;		/* pool_scrub_type_t	*/
473 	uint64_t	vs_scrub_complete;	/* completed?		*/
474 	uint64_t	vs_scrub_examined;	/* bytes examined; top	*/
475 	uint64_t	vs_scrub_repaired;	/* bytes repaired; leaf	*/
476 	uint64_t	vs_scrub_errors;	/* errors during scrub	*/
477 	uint64_t	vs_scrub_start;		/* UTC scrub start time	*/
478 	uint64_t	vs_scrub_end;		/* UTC scrub end time	*/
479 } vdev_stat_t;
480 
481 #define	ZVOL_DRIVER	"zvol"
482 #define	ZFS_DRIVER	"zfs"
483 #define	ZFS_DEV		"/dev/zfs"
484 
485 /*
486  * zvol paths.  Irritatingly, the devfsadm interfaces want all these
487  * paths without the /dev prefix, but for some things, we want the
488  * /dev prefix.  Below are the names without /dev.
489  */
490 #define	ZVOL_DEV_DIR	"zvol/dsk"
491 #define	ZVOL_RDEV_DIR	"zvol/rdsk"
492 
493 /*
494  * And here are the things we need with /dev, etc. in front of them.
495  */
496 #define	ZVOL_PSEUDO_DEV		"/devices/pseudo/zvol@0:"
497 #define	ZVOL_FULL_DEV_DIR	"/dev/" ZVOL_DEV_DIR "/"
498 
499 #define	ZVOL_PROP_NAME		"name"
500 
501 /*
502  * /dev/zfs ioctl numbers.
503  */
504 #define	ZFS_IOC		('Z' << 8)
505 
506 typedef enum zfs_ioc {
507 	ZFS_IOC_POOL_CREATE = ZFS_IOC,
508 	ZFS_IOC_POOL_DESTROY,
509 	ZFS_IOC_POOL_IMPORT,
510 	ZFS_IOC_POOL_EXPORT,
511 	ZFS_IOC_POOL_CONFIGS,
512 	ZFS_IOC_POOL_STATS,
513 	ZFS_IOC_POOL_TRYIMPORT,
514 	ZFS_IOC_POOL_SCRUB,
515 	ZFS_IOC_POOL_FREEZE,
516 	ZFS_IOC_POOL_UPGRADE,
517 	ZFS_IOC_POOL_GET_HISTORY,
518 	ZFS_IOC_VDEV_ADD,
519 	ZFS_IOC_VDEV_REMOVE,
520 	ZFS_IOC_VDEV_SET_STATE,
521 	ZFS_IOC_VDEV_ATTACH,
522 	ZFS_IOC_VDEV_DETACH,
523 	ZFS_IOC_VDEV_SETPATH,
524 	ZFS_IOC_OBJSET_STATS,
525 	ZFS_IOC_OBJSET_ZPLPROPS,
526 	ZFS_IOC_DATASET_LIST_NEXT,
527 	ZFS_IOC_SNAPSHOT_LIST_NEXT,
528 	ZFS_IOC_SET_PROP,
529 	ZFS_IOC_CREATE_MINOR,
530 	ZFS_IOC_REMOVE_MINOR,
531 	ZFS_IOC_CREATE,
532 	ZFS_IOC_DESTROY,
533 	ZFS_IOC_ROLLBACK,
534 	ZFS_IOC_RENAME,
535 	ZFS_IOC_RECV,
536 	ZFS_IOC_SEND,
537 	ZFS_IOC_INJECT_FAULT,
538 	ZFS_IOC_CLEAR_FAULT,
539 	ZFS_IOC_INJECT_LIST_NEXT,
540 	ZFS_IOC_ERROR_LOG,
541 	ZFS_IOC_CLEAR,
542 	ZFS_IOC_PROMOTE,
543 	ZFS_IOC_DESTROY_SNAPS,
544 	ZFS_IOC_SNAPSHOT,
545 	ZFS_IOC_DSOBJ_TO_DSNAME,
546 	ZFS_IOC_OBJ_TO_PATH,
547 	ZFS_IOC_POOL_SET_PROPS,
548 	ZFS_IOC_POOL_GET_PROPS,
549 	ZFS_IOC_SET_FSACL,
550 	ZFS_IOC_GET_FSACL,
551 	ZFS_IOC_ISCSI_PERM_CHECK,
552 	ZFS_IOC_SHARE,
553 	ZFS_IOC_INHERIT_PROP
554 } zfs_ioc_t;
555 
556 /*
557  * Internal SPA load state.  Used by FMA diagnosis engine.
558  */
559 typedef enum {
560 	SPA_LOAD_NONE,		/* no load in progress */
561 	SPA_LOAD_OPEN,		/* normal open */
562 	SPA_LOAD_IMPORT,	/* import in progress */
563 	SPA_LOAD_TRYIMPORT	/* tryimport in progress */
564 } spa_load_state_t;
565 
566 /*
567  * Bookmark name values.
568  */
569 #define	ZPOOL_ERR_LIST		"error list"
570 #define	ZPOOL_ERR_DATASET	"dataset"
571 #define	ZPOOL_ERR_OBJECT	"object"
572 
573 #define	HIS_MAX_RECORD_LEN	(MAXPATHLEN + MAXPATHLEN + 1)
574 
575 /*
576  * The following are names used in the nvlist describing
577  * the pool's history log.
578  */
579 #define	ZPOOL_HIST_RECORD	"history record"
580 #define	ZPOOL_HIST_TIME		"history time"
581 #define	ZPOOL_HIST_CMD		"history command"
582 #define	ZPOOL_HIST_WHO		"history who"
583 #define	ZPOOL_HIST_ZONE		"history zone"
584 #define	ZPOOL_HIST_HOST		"history hostname"
585 #define	ZPOOL_HIST_TXG		"history txg"
586 #define	ZPOOL_HIST_INT_EVENT	"history internal event"
587 #define	ZPOOL_HIST_INT_STR	"history internal str"
588 
589 /*
590  * Flags for ZFS_IOC_VDEV_SET_STATE
591  */
592 #define	ZFS_ONLINE_CHECKREMOVE	0x1
593 #define	ZFS_ONLINE_UNSPARE	0x2
594 #define	ZFS_ONLINE_FORCEFAULT	0x4
595 #define	ZFS_OFFLINE_TEMPORARY	0x1
596 
597 /*
598  * Sysevent payload members.  ZFS will generate the following sysevents with the
599  * given payloads:
600  *
601  *	ESC_ZFS_RESILVER_START
602  *	ESC_ZFS_RESILVER_END
603  *	ESC_ZFS_POOL_DESTROY
604  *
605  *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
606  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
607  *
608  *	ESC_ZFS_VDEV_REMOVE
609  *	ESC_ZFS_VDEV_CLEAR
610  *	ESC_ZFS_VDEV_CHECK
611  *
612  *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
613  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
614  *		ZFS_EV_VDEV_PATH	DATA_TYPE_STRING	(optional)
615  *		ZFS_EV_VDEV_GUID	DATA_TYPE_UINT64
616  */
617 #define	ZFS_EV_POOL_NAME	"pool_name"
618 #define	ZFS_EV_POOL_GUID	"pool_guid"
619 #define	ZFS_EV_VDEV_PATH	"vdev_path"
620 #define	ZFS_EV_VDEV_GUID	"vdev_guid"
621 
622 /*
623  * Note: This is encoded on-disk, so new events must be added to the
624  * end, and unused events can not be removed.  Be sure to edit
625  * zpool_main.c: hist_event_table[].
626  */
627 typedef enum history_internal_events {
628 	LOG_NO_EVENT = 0,
629 	LOG_POOL_CREATE,
630 	LOG_POOL_VDEV_ADD,
631 	LOG_POOL_REMOVE,
632 	LOG_POOL_DESTROY,
633 	LOG_POOL_EXPORT,
634 	LOG_POOL_IMPORT,
635 	LOG_POOL_VDEV_ATTACH,
636 	LOG_POOL_VDEV_REPLACE,
637 	LOG_POOL_VDEV_DETACH,
638 	LOG_POOL_VDEV_ONLINE,
639 	LOG_POOL_VDEV_OFFLINE,
640 	LOG_POOL_UPGRADE,
641 	LOG_POOL_CLEAR,
642 	LOG_POOL_SCRUB,
643 	LOG_POOL_PROPSET,
644 	LOG_DS_CREATE,
645 	LOG_DS_CLONE,
646 	LOG_DS_DESTROY,
647 	LOG_DS_DESTROY_BEGIN,
648 	LOG_DS_INHERIT,
649 	LOG_DS_PROPSET,
650 	LOG_DS_QUOTA,
651 	LOG_DS_PERM_UPDATE,
652 	LOG_DS_PERM_REMOVE,
653 	LOG_DS_PERM_WHO_REMOVE,
654 	LOG_DS_PROMOTE,
655 	LOG_DS_RECEIVE,
656 	LOG_DS_RENAME,
657 	LOG_DS_RESERVATION,
658 	LOG_DS_REPLAY_INC_SYNC,
659 	LOG_DS_REPLAY_FULL_SYNC,
660 	LOG_DS_ROLLBACK,
661 	LOG_DS_SNAPSHOT,
662 	LOG_DS_UPGRADE,
663 	LOG_DS_REFQUOTA,
664 	LOG_DS_REFRESERV,
665 	LOG_POOL_SCRUB_DONE,
666 	LOG_END
667 } history_internal_events_t;
668 
669 #ifdef	__cplusplus
670 }
671 #endif
672 
673 #endif	/* _SYS_FS_ZFS_H */
674