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cstyle fixes
dsl_dataset_set_fsid_guid should use ZFS_SPACE_CHECK_RESERVED
dsl_dataset_set_fsid_guid _check and _sync func declared static,
removed from dsl_dataset.h
rewrite unique_valid
6333 ZFS should let the user specify or modify the fsid_guid of a dataset
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--- old/usr/src/uts/common/fs/zfs/sys/dsl_dataset.h
+++ new/usr/src/uts/common/fs/zfs/sys/dsl_dataset.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
24 24 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
25 25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 26 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
27 27 */
28 28
29 29 #ifndef _SYS_DSL_DATASET_H
30 30 #define _SYS_DSL_DATASET_H
31 31
32 32 #include <sys/dmu.h>
33 33 #include <sys/spa.h>
34 34 #include <sys/txg.h>
35 35 #include <sys/zio.h>
36 36 #include <sys/bplist.h>
37 37 #include <sys/dsl_synctask.h>
38 38 #include <sys/zfs_context.h>
39 39 #include <sys/dsl_deadlist.h>
40 40 #include <sys/refcount.h>
41 41 #include <zfeature_common.h>
42 42
43 43 #ifdef __cplusplus
44 44 extern "C" {
45 45 #endif
46 46
47 47 struct dsl_dataset;
48 48 struct dsl_dir;
49 49 struct dsl_pool;
50 50
51 51 #define DS_FLAG_INCONSISTENT (1ULL<<0)
52 52 #define DS_IS_INCONSISTENT(ds) \
53 53 (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_INCONSISTENT)
54 54
55 55 /*
56 56 * Do not allow this dataset to be promoted.
57 57 */
58 58 #define DS_FLAG_NOPROMOTE (1ULL<<1)
59 59
60 60 /*
61 61 * DS_FLAG_UNIQUE_ACCURATE is set if ds_unique_bytes has been correctly
62 62 * calculated for head datasets (starting with SPA_VERSION_UNIQUE_ACCURATE,
63 63 * refquota/refreservations).
64 64 */
65 65 #define DS_FLAG_UNIQUE_ACCURATE (1ULL<<2)
66 66
67 67 /*
68 68 * DS_FLAG_DEFER_DESTROY is set after 'zfs destroy -d' has been called
69 69 * on a dataset. This allows the dataset to be destroyed using 'zfs release'.
70 70 */
71 71 #define DS_FLAG_DEFER_DESTROY (1ULL<<3)
72 72 #define DS_IS_DEFER_DESTROY(ds) \
73 73 (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_DEFER_DESTROY)
74 74
75 75 /*
76 76 * DS_FIELD_* are strings that are used in the "extensified" dataset zap object.
77 77 * They should be of the format <reverse-dns>:<field>.
78 78 */
79 79
80 80 /*
81 81 * This field's value is the object ID of a zap object which contains the
82 82 * bookmarks of this dataset. If it is present, then this dataset is counted
83 83 * in the refcount of the SPA_FEATURES_BOOKMARKS feature.
84 84 */
85 85 #define DS_FIELD_BOOKMARK_NAMES "com.delphix:bookmarks"
86 86
87 87 /*
88 88 * This field is present (with value=0) if this dataset may contain large
89 89 * blocks (>128KB). If it is present, then this dataset
90 90 * is counted in the refcount of the SPA_FEATURE_LARGE_BLOCKS feature.
91 91 */
92 92 #define DS_FIELD_LARGE_BLOCKS "org.open-zfs:large_blocks"
93 93
94 94 /*
95 95 * These fields are set on datasets that are in the middle of a resumable
96 96 * receive, and allow the sender to resume the send if it is interrupted.
97 97 */
98 98 #define DS_FIELD_RESUME_FROMGUID "com.delphix:resume_fromguid"
99 99 #define DS_FIELD_RESUME_TONAME "com.delphix:resume_toname"
100 100 #define DS_FIELD_RESUME_TOGUID "com.delphix:resume_toguid"
101 101 #define DS_FIELD_RESUME_OBJECT "com.delphix:resume_object"
102 102 #define DS_FIELD_RESUME_OFFSET "com.delphix:resume_offset"
103 103 #define DS_FIELD_RESUME_BYTES "com.delphix:resume_bytes"
104 104 #define DS_FIELD_RESUME_EMBEDOK "com.delphix:resume_embedok"
105 105
106 106 /*
107 107 * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
108 108 * name lookups should be performed case-insensitively.
109 109 */
110 110 #define DS_FLAG_CI_DATASET (1ULL<<16)
111 111
112 112 #define DS_CREATE_FLAG_NODIRTY (1ULL<<24)
113 113
114 114 typedef struct dsl_dataset_phys {
115 115 uint64_t ds_dir_obj; /* DMU_OT_DSL_DIR */
116 116 uint64_t ds_prev_snap_obj; /* DMU_OT_DSL_DATASET */
117 117 uint64_t ds_prev_snap_txg;
118 118 uint64_t ds_next_snap_obj; /* DMU_OT_DSL_DATASET */
119 119 uint64_t ds_snapnames_zapobj; /* DMU_OT_DSL_DS_SNAP_MAP 0 for snaps */
120 120 uint64_t ds_num_children; /* clone/snap children; ==0 for head */
121 121 uint64_t ds_creation_time; /* seconds since 1970 */
122 122 uint64_t ds_creation_txg;
123 123 uint64_t ds_deadlist_obj; /* DMU_OT_DEADLIST */
124 124 /*
125 125 * ds_referenced_bytes, ds_compressed_bytes, and ds_uncompressed_bytes
126 126 * include all blocks referenced by this dataset, including those
127 127 * shared with any other datasets.
128 128 */
129 129 uint64_t ds_referenced_bytes;
130 130 uint64_t ds_compressed_bytes;
131 131 uint64_t ds_uncompressed_bytes;
132 132 uint64_t ds_unique_bytes; /* only relevant to snapshots */
133 133 /*
134 134 * The ds_fsid_guid is a 56-bit ID that can change to avoid
135 135 * collisions. The ds_guid is a 64-bit ID that will never
136 136 * change, so there is a small probability that it will collide.
137 137 */
138 138 uint64_t ds_fsid_guid;
139 139 uint64_t ds_guid;
140 140 uint64_t ds_flags; /* DS_FLAG_* */
141 141 blkptr_t ds_bp;
142 142 uint64_t ds_next_clones_obj; /* DMU_OT_DSL_CLONES */
143 143 uint64_t ds_props_obj; /* DMU_OT_DSL_PROPS for snaps */
144 144 uint64_t ds_userrefs_obj; /* DMU_OT_USERREFS */
145 145 uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */
146 146 } dsl_dataset_phys_t;
147 147
148 148 typedef struct dsl_dataset {
149 149 dmu_buf_user_t ds_dbu;
150 150
151 151 /* Immutable: */
152 152 struct dsl_dir *ds_dir;
153 153 dmu_buf_t *ds_dbuf;
154 154 uint64_t ds_object;
155 155 uint64_t ds_fsid_guid;
156 156 boolean_t ds_is_snapshot;
157 157
158 158 /* only used in syncing context, only valid for non-snapshots: */
159 159 struct dsl_dataset *ds_prev;
160 160 uint64_t ds_bookmarks; /* DMU_OTN_ZAP_METADATA */
161 161
162 162 /* has internal locking: */
163 163 dsl_deadlist_t ds_deadlist;
164 164 bplist_t ds_pending_deadlist;
165 165
166 166 /* protected by lock on pool's dp_dirty_datasets list */
167 167 txg_node_t ds_dirty_link;
168 168 list_node_t ds_synced_link;
169 169
170 170 /*
171 171 * ds_phys->ds_<accounting> is also protected by ds_lock.
172 172 * Protected by ds_lock:
173 173 */
174 174 kmutex_t ds_lock;
175 175 objset_t *ds_objset;
176 176 uint64_t ds_userrefs;
177 177 void *ds_owner;
178 178
179 179 /*
180 180 * Long holds prevent the ds from being destroyed; they allow the
181 181 * ds to remain held even after dropping the dp_config_rwlock.
182 182 * Owning counts as a long hold. See the comments above
183 183 * dsl_pool_hold() for details.
184 184 */
185 185 refcount_t ds_longholds;
186 186
187 187 /* no locking; only for making guesses */
188 188 uint64_t ds_trysnap_txg;
189 189
190 190 /* for objset_open() */
191 191 kmutex_t ds_opening_lock;
192 192
193 193 uint64_t ds_reserved; /* cached refreservation */
194 194 uint64_t ds_quota; /* cached refquota */
195 195
196 196 kmutex_t ds_sendstream_lock;
197 197 list_t ds_sendstreams;
198 198
199 199 /*
200 200 * When in the middle of a resumable receive, tracks how much
201 201 * progress we have made.
202 202 */
203 203 uint64_t ds_resume_object[TXG_SIZE];
204 204 uint64_t ds_resume_offset[TXG_SIZE];
205 205 uint64_t ds_resume_bytes[TXG_SIZE];
206 206
207 207 /* Protected by our dsl_dir's dd_lock */
208 208 list_t ds_prop_cbs;
209 209
210 210 /*
211 211 * For ZFEATURE_FLAG_PER_DATASET features, set if this dataset
212 212 * uses this feature.
213 213 */
214 214 uint8_t ds_feature_inuse[SPA_FEATURES];
215 215
216 216 /*
217 217 * Set if we need to activate the feature on this dataset this txg
218 218 * (used only in syncing context).
219 219 */
220 220 uint8_t ds_feature_activation_needed[SPA_FEATURES];
221 221
222 222 /* Protected by ds_lock; keep at end of struct for better locality */
223 223 char ds_snapname[MAXNAMELEN];
224 224 } dsl_dataset_t;
225 225
226 226 inline dsl_dataset_phys_t *
227 227 dsl_dataset_phys(dsl_dataset_t *ds)
228 228 {
229 229 return (ds->ds_dbuf->db_data);
230 230 }
231 231
232 232 /*
233 233 * The max length of a temporary tag prefix is the number of hex digits
234 234 * required to express UINT64_MAX plus one for the hyphen.
235 235 */
236 236 #define MAX_TAG_PREFIX_LEN 17
237 237
238 238 #define dsl_dataset_is_snapshot(ds) \
239 239 (dsl_dataset_phys(ds)->ds_num_children != 0)
240 240
241 241 #define DS_UNIQUE_IS_ACCURATE(ds) \
242 242 ((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
243 243
244 244 int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag,
245 245 dsl_dataset_t **dsp);
246 246 boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
247 247 void *tag);
248 248 int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj, void *tag,
249 249 dsl_dataset_t **);
250 250 void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
251 251 int dsl_dataset_own(struct dsl_pool *dp, const char *name,
252 252 void *tag, dsl_dataset_t **dsp);
253 253 int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
254 254 void *tag, dsl_dataset_t **dsp);
255 255 void dsl_dataset_disown(dsl_dataset_t *ds, void *tag);
256 256 void dsl_dataset_name(dsl_dataset_t *ds, char *name);
257 257 boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, void *tag);
258 258 boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds);
259 259 uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
260 260 dsl_dataset_t *origin, uint64_t flags, cred_t *, dmu_tx_t *);
261 261 uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
262 262 uint64_t flags, dmu_tx_t *tx);
263 263 int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
264 264 int dsl_dataset_promote(const char *name, char *conflsnap);
265 265 int dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head,
266 266 boolean_t force);
267 267 int dsl_dataset_rename_snapshot(const char *fsname,
268 268 const char *oldsnapname, const char *newsnapname, boolean_t recursive);
269 269 int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname,
270 270 minor_t cleanup_minor, const char *htag);
271 271
272 272 blkptr_t *dsl_dataset_get_blkptr(dsl_dataset_t *ds);
273 273 void dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx);
274 274
275 275 spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds);
276 276
277 277 boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
278 278 dsl_dataset_t *snap);
279 279
280 280 void dsl_dataset_sync(dsl_dataset_t *os, zio_t *zio, dmu_tx_t *tx);
281 281
282 282 void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp,
283 283 dmu_tx_t *tx);
284 284 int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp,
285 285 dmu_tx_t *tx, boolean_t async);
286 286 boolean_t dsl_dataset_block_freeable(dsl_dataset_t *ds, const blkptr_t *bp,
287 287 uint64_t blk_birth);
288 288 uint64_t dsl_dataset_prev_snap_txg(dsl_dataset_t *ds);
289 289
290 290 void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
291 291 void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);
292 292 void dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat);
293 293 void dsl_dataset_space(dsl_dataset_t *ds,
294 294 uint64_t *refdbytesp, uint64_t *availbytesp,
295 295 uint64_t *usedobjsp, uint64_t *availobjsp);
296 296 uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
297 297 int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *new,
298 298 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
299 299 int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
300 300 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
301 301 boolean_t dsl_dataset_is_dirty(dsl_dataset_t *ds);
302 302
303 303 int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);
304 304
305 305 int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
306 306 uint64_t asize, uint64_t inflight, uint64_t *used,
307 307 uint64_t *ref_rsrv);
308 308 int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
309 309 uint64_t quota);
310 310 int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
311 311 uint64_t reservation);
312 312
313 313 boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier,
314 314 uint64_t earlier_txg);
315 315 void dsl_dataset_long_hold(dsl_dataset_t *ds, void *tag);
316 316 void dsl_dataset_long_rele(dsl_dataset_t *ds, void *tag);
317 317 boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);
318 318
319 319 int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
320 320 dsl_dataset_t *origin_head, boolean_t force, void *owner, dmu_tx_t *tx);
321 321 void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
322 322 dsl_dataset_t *origin_head, dmu_tx_t *tx);
323 323 int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
324 324 dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr);
325 325 void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
326 326 dmu_tx_t *tx);
327 327
328 328 void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
329 329 dmu_tx_t *tx);
330 330 void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
331 331 int dsl_dataset_get_snapname(dsl_dataset_t *ds);
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332 332 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
333 333 uint64_t *value);
334 334 int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,
335 335 boolean_t adj_cnt);
336 336 void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
337 337 zprop_source_t source, uint64_t value, dmu_tx_t *tx);
338 338 void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);
339 339 boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds);
340 340 boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds);
341 341 int dsl_dataset_rollback(const char *fsname, void *owner, nvlist_t *result);
342 +int dsl_dataset_set_fsid_guid(const char *ddname, zprop_source_t source,
343 + uint64_t fsid_guid);
342 344
343 345 void dsl_dataset_deactivate_feature(uint64_t dsobj,
344 346 spa_feature_t f, dmu_tx_t *tx);
345 347
346 348 #ifdef ZFS_DEBUG
347 349 #define dprintf_ds(ds, fmt, ...) do { \
348 350 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
349 351 char *__ds_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); \
350 352 dsl_dataset_name(ds, __ds_name); \
351 353 dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
352 354 kmem_free(__ds_name, MAXNAMELEN); \
353 355 } \
354 356 _NOTE(CONSTCOND) } while (0)
355 357 #else
356 358 #define dprintf_ds(dd, fmt, ...)
357 359 #endif
358 360
359 361 #ifdef __cplusplus
360 362 }
361 363 #endif
362 364
363 365 #endif /* _SYS_DSL_DATASET_H */
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