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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | */ | |
36 | ||
37 | #ifndef __LUSTRE_DT_OBJECT_H | |
38 | #define __LUSTRE_DT_OBJECT_H | |
39 | ||
40 | /** \defgroup dt dt | |
41 | * Sub-class of lu_object with methods common for "data" objects in OST stack. | |
42 | * | |
43 | * Data objects behave like regular files: you can read/write them, get and | |
44 | * set their attributes. Implementation of dt interface is supposed to | |
45 | * implement some form of garbage collection, normally reference counting | |
46 | * (nlink) based one. | |
47 | * | |
48 | * Examples: osd (lustre/osd) is an implementation of dt interface. | |
49 | * @{ | |
50 | */ | |
51 | ||
52 | ||
53 | /* | |
54 | * super-class definitions. | |
55 | */ | |
56 | #include <lu_object.h> | |
57 | ||
9fdaf8c0 | 58 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 PT |
59 | |
60 | struct seq_file; | |
61 | struct proc_dir_entry; | |
62 | struct lustre_cfg; | |
63 | ||
64 | struct thandle; | |
65 | struct dt_device; | |
66 | struct dt_object; | |
67 | struct dt_index_features; | |
68 | struct niobuf_local; | |
69 | struct niobuf_remote; | |
70 | struct ldlm_enqueue_info; | |
71 | ||
72 | typedef enum { | |
73 | MNTOPT_USERXATTR = 0x00000001, | |
74 | MNTOPT_ACL = 0x00000002, | |
75 | } mntopt_t; | |
76 | ||
77 | struct dt_device_param { | |
78 | unsigned ddp_max_name_len; | |
79 | unsigned ddp_max_nlink; | |
80 | unsigned ddp_block_shift; | |
81 | mntopt_t ddp_mntopts; | |
82 | unsigned ddp_max_ea_size; | |
83 | void *ddp_mnt; /* XXX: old code can retrieve mnt -bzzz */ | |
84 | int ddp_mount_type; | |
85 | unsigned long long ddp_maxbytes; | |
86 | /* percentage of available space to reserve for grant error margin */ | |
87 | int ddp_grant_reserved; | |
88 | /* per-inode space consumption */ | |
89 | short ddp_inodespace; | |
90 | /* per-fragment grant overhead to be used by client for grant | |
91 | * calculation */ | |
92 | int ddp_grant_frag; | |
93 | }; | |
94 | ||
95 | /** | |
96 | * Per-transaction commit callback function | |
97 | */ | |
98 | struct dt_txn_commit_cb; | |
99 | typedef void (*dt_cb_t)(struct lu_env *env, struct thandle *th, | |
100 | struct dt_txn_commit_cb *cb, int err); | |
101 | /** | |
102 | * Special per-transaction callback for cases when just commit callback | |
103 | * is needed and per-device callback are not convenient to use | |
104 | */ | |
105 | #define TRANS_COMMIT_CB_MAGIC 0xa0a00a0a | |
106 | #define MAX_COMMIT_CB_STR_LEN 32 | |
107 | ||
108 | struct dt_txn_commit_cb { | |
109 | struct list_head dcb_linkage; | |
110 | dt_cb_t dcb_func; | |
111 | __u32 dcb_magic; | |
112 | char dcb_name[MAX_COMMIT_CB_STR_LEN]; | |
113 | }; | |
114 | ||
115 | /** | |
116 | * Operations on dt device. | |
117 | */ | |
118 | struct dt_device_operations { | |
119 | /** | |
120 | * Return device-wide statistics. | |
121 | */ | |
122 | int (*dt_statfs)(const struct lu_env *env, | |
123 | struct dt_device *dev, struct obd_statfs *osfs); | |
124 | /** | |
125 | * Create transaction, described by \a param. | |
126 | */ | |
127 | struct thandle *(*dt_trans_create)(const struct lu_env *env, | |
128 | struct dt_device *dev); | |
129 | /** | |
130 | * Start transaction, described by \a param. | |
131 | */ | |
132 | int (*dt_trans_start)(const struct lu_env *env, | |
133 | struct dt_device *dev, struct thandle *th); | |
134 | /** | |
135 | * Finish previously started transaction. | |
136 | */ | |
137 | int (*dt_trans_stop)(const struct lu_env *env, | |
138 | struct thandle *th); | |
139 | /** | |
140 | * Add commit callback to the transaction. | |
141 | */ | |
142 | int (*dt_trans_cb_add)(struct thandle *th, | |
143 | struct dt_txn_commit_cb *dcb); | |
144 | /** | |
145 | * Return fid of root index object. | |
146 | */ | |
147 | int (*dt_root_get)(const struct lu_env *env, | |
148 | struct dt_device *dev, struct lu_fid *f); | |
149 | /** | |
150 | * Return device configuration data. | |
151 | */ | |
152 | void (*dt_conf_get)(const struct lu_env *env, | |
153 | const struct dt_device *dev, | |
154 | struct dt_device_param *param); | |
155 | /** | |
156 | * handling device state, mostly for tests | |
157 | */ | |
158 | int (*dt_sync)(const struct lu_env *env, struct dt_device *dev); | |
159 | int (*dt_ro)(const struct lu_env *env, struct dt_device *dev); | |
160 | /** | |
161 | * Start a transaction commit asynchronously | |
162 | * | |
163 | * \param env environment | |
164 | * \param dev dt_device to start commit on | |
165 | * | |
166 | * \return 0 success, negative value if error | |
167 | */ | |
168 | int (*dt_commit_async)(const struct lu_env *env, | |
169 | struct dt_device *dev); | |
170 | /** | |
171 | * Initialize capability context. | |
172 | */ | |
173 | int (*dt_init_capa_ctxt)(const struct lu_env *env, | |
174 | struct dt_device *dev, | |
175 | int mode, unsigned long timeout, | |
176 | __u32 alg, struct lustre_capa_key *keys); | |
177 | }; | |
178 | ||
179 | struct dt_index_features { | |
180 | /** required feature flags from enum dt_index_flags */ | |
181 | __u32 dif_flags; | |
182 | /** minimal required key size */ | |
183 | size_t dif_keysize_min; | |
184 | /** maximal required key size, 0 if no limit */ | |
185 | size_t dif_keysize_max; | |
186 | /** minimal required record size */ | |
187 | size_t dif_recsize_min; | |
188 | /** maximal required record size, 0 if no limit */ | |
189 | size_t dif_recsize_max; | |
190 | /** pointer size for record */ | |
191 | size_t dif_ptrsize; | |
192 | }; | |
193 | ||
194 | enum dt_index_flags { | |
195 | /** index supports variable sized keys */ | |
196 | DT_IND_VARKEY = 1 << 0, | |
197 | /** index supports variable sized records */ | |
198 | DT_IND_VARREC = 1 << 1, | |
199 | /** index can be modified */ | |
200 | DT_IND_UPDATE = 1 << 2, | |
201 | /** index supports records with non-unique (duplicate) keys */ | |
202 | DT_IND_NONUNQ = 1 << 3, | |
203 | /** | |
204 | * index support fixed-size keys sorted with natural numerical way | |
205 | * and is able to return left-side value if no exact value found | |
206 | */ | |
207 | DT_IND_RANGE = 1 << 4, | |
208 | }; | |
209 | ||
210 | /** | |
211 | * Features, required from index to support file system directories (mapping | |
212 | * names to fids). | |
213 | */ | |
214 | extern const struct dt_index_features dt_directory_features; | |
215 | extern const struct dt_index_features dt_otable_features; | |
216 | extern const struct dt_index_features dt_lfsck_features; | |
217 | ||
218 | /* index features supported by the accounting objects */ | |
219 | extern const struct dt_index_features dt_acct_features; | |
220 | ||
221 | /* index features supported by the quota global indexes */ | |
222 | extern const struct dt_index_features dt_quota_glb_features; | |
223 | ||
224 | /* index features supported by the quota slave indexes */ | |
225 | extern const struct dt_index_features dt_quota_slv_features; | |
226 | ||
227 | /** | |
228 | * This is a general purpose dt allocation hint. | |
229 | * It now contains the parent object. | |
230 | * It can contain any allocation hint in the future. | |
231 | */ | |
232 | struct dt_allocation_hint { | |
233 | struct dt_object *dah_parent; | |
234 | __u32 dah_mode; | |
235 | }; | |
236 | ||
237 | /** | |
238 | * object type specifier. | |
239 | */ | |
240 | ||
241 | enum dt_format_type { | |
242 | DFT_REGULAR, | |
243 | DFT_DIR, | |
244 | /** for mknod */ | |
245 | DFT_NODE, | |
246 | /** for special index */ | |
247 | DFT_INDEX, | |
248 | /** for symbolic link */ | |
249 | DFT_SYM, | |
250 | }; | |
251 | ||
252 | /** | |
253 | * object format specifier. | |
254 | */ | |
255 | struct dt_object_format { | |
256 | /** type for dt object */ | |
257 | enum dt_format_type dof_type; | |
258 | union { | |
259 | struct dof_regular { | |
260 | int striped; | |
261 | } dof_reg; | |
262 | struct dof_dir { | |
263 | } dof_dir; | |
264 | struct dof_node { | |
265 | } dof_node; | |
266 | /** | |
267 | * special index need feature as parameter to create | |
268 | * special idx | |
269 | */ | |
270 | struct dof_index { | |
271 | const struct dt_index_features *di_feat; | |
272 | } dof_idx; | |
273 | } u; | |
274 | }; | |
275 | ||
276 | enum dt_format_type dt_mode_to_dft(__u32 mode); | |
277 | ||
278 | typedef __u64 dt_obj_version_t; | |
279 | ||
280 | /** | |
281 | * Per-dt-object operations. | |
282 | */ | |
283 | struct dt_object_operations { | |
284 | void (*do_read_lock)(const struct lu_env *env, | |
285 | struct dt_object *dt, unsigned role); | |
286 | void (*do_write_lock)(const struct lu_env *env, | |
287 | struct dt_object *dt, unsigned role); | |
288 | void (*do_read_unlock)(const struct lu_env *env, | |
289 | struct dt_object *dt); | |
290 | void (*do_write_unlock)(const struct lu_env *env, | |
291 | struct dt_object *dt); | |
292 | int (*do_write_locked)(const struct lu_env *env, | |
293 | struct dt_object *dt); | |
294 | /** | |
295 | * Note: following ->do_{x,}attr_{set,get}() operations are very | |
296 | * similar to ->moo_{x,}attr_{set,get}() operations in struct | |
297 | * md_object_operations (see md_object.h). These operations are not in | |
298 | * lu_object_operations, because ->do_{x,}attr_set() versions take | |
299 | * transaction handle as an argument (this transaction is started by | |
300 | * caller). We might factor ->do_{x,}attr_get() into | |
301 | * lu_object_operations, but that would break existing symmetry. | |
302 | */ | |
303 | ||
304 | /** | |
305 | * Return standard attributes. | |
306 | * | |
307 | * precondition: lu_object_exists(&dt->do_lu); | |
308 | */ | |
309 | int (*do_attr_get)(const struct lu_env *env, | |
310 | struct dt_object *dt, struct lu_attr *attr, | |
311 | struct lustre_capa *capa); | |
312 | /** | |
313 | * Set standard attributes. | |
314 | * | |
315 | * precondition: dt_object_exists(dt); | |
316 | */ | |
317 | int (*do_declare_attr_set)(const struct lu_env *env, | |
318 | struct dt_object *dt, | |
319 | const struct lu_attr *attr, | |
320 | struct thandle *handle); | |
321 | int (*do_attr_set)(const struct lu_env *env, | |
322 | struct dt_object *dt, | |
323 | const struct lu_attr *attr, | |
324 | struct thandle *handle, | |
325 | struct lustre_capa *capa); | |
326 | /** | |
327 | * Return a value of an extended attribute. | |
328 | * | |
329 | * precondition: dt_object_exists(dt); | |
330 | */ | |
331 | int (*do_xattr_get)(const struct lu_env *env, struct dt_object *dt, | |
332 | struct lu_buf *buf, const char *name, | |
333 | struct lustre_capa *capa); | |
334 | /** | |
335 | * Set value of an extended attribute. | |
336 | * | |
337 | * \a fl - flags from enum lu_xattr_flags | |
338 | * | |
339 | * precondition: dt_object_exists(dt); | |
340 | */ | |
341 | int (*do_declare_xattr_set)(const struct lu_env *env, | |
342 | struct dt_object *dt, | |
343 | const struct lu_buf *buf, | |
344 | const char *name, int fl, | |
345 | struct thandle *handle); | |
346 | int (*do_xattr_set)(const struct lu_env *env, | |
347 | struct dt_object *dt, const struct lu_buf *buf, | |
348 | const char *name, int fl, struct thandle *handle, | |
349 | struct lustre_capa *capa); | |
350 | /** | |
351 | * Delete existing extended attribute. | |
352 | * | |
353 | * precondition: dt_object_exists(dt); | |
354 | */ | |
355 | int (*do_declare_xattr_del)(const struct lu_env *env, | |
356 | struct dt_object *dt, | |
357 | const char *name, struct thandle *handle); | |
358 | int (*do_xattr_del)(const struct lu_env *env, | |
359 | struct dt_object *dt, | |
360 | const char *name, struct thandle *handle, | |
361 | struct lustre_capa *capa); | |
362 | /** | |
363 | * Place list of existing extended attributes into \a buf (which has | |
364 | * length len). | |
365 | * | |
366 | * precondition: dt_object_exists(dt); | |
367 | */ | |
368 | int (*do_xattr_list)(const struct lu_env *env, | |
369 | struct dt_object *dt, struct lu_buf *buf, | |
370 | struct lustre_capa *capa); | |
371 | /** | |
372 | * Init allocation hint using parent object and child mode. | |
373 | * (1) The \a parent might be NULL if this is a partial creation for | |
374 | * remote object. | |
375 | * (2) The type of child is in \a child_mode. | |
376 | * (3) The result hint is stored in \a ah; | |
377 | */ | |
378 | void (*do_ah_init)(const struct lu_env *env, | |
379 | struct dt_allocation_hint *ah, | |
380 | struct dt_object *parent, | |
381 | struct dt_object *child, | |
382 | umode_t child_mode); | |
383 | /** | |
384 | * Create new object on this device. | |
385 | * | |
386 | * precondition: !dt_object_exists(dt); | |
387 | * postcondition: ergo(result == 0, dt_object_exists(dt)); | |
388 | */ | |
389 | int (*do_declare_create)(const struct lu_env *env, | |
390 | struct dt_object *dt, | |
391 | struct lu_attr *attr, | |
392 | struct dt_allocation_hint *hint, | |
393 | struct dt_object_format *dof, | |
394 | struct thandle *th); | |
395 | int (*do_create)(const struct lu_env *env, struct dt_object *dt, | |
396 | struct lu_attr *attr, | |
397 | struct dt_allocation_hint *hint, | |
398 | struct dt_object_format *dof, | |
399 | struct thandle *th); | |
400 | ||
401 | /** | |
402 | Destroy object on this device | |
403 | * precondition: !dt_object_exists(dt); | |
404 | * postcondition: ergo(result == 0, dt_object_exists(dt)); | |
405 | */ | |
406 | int (*do_declare_destroy)(const struct lu_env *env, | |
407 | struct dt_object *dt, | |
408 | struct thandle *th); | |
409 | int (*do_destroy)(const struct lu_env *env, struct dt_object *dt, | |
410 | struct thandle *th); | |
411 | ||
412 | /** | |
413 | * Announce that this object is going to be used as an index. This | |
414 | * operation check that object supports indexing operations and | |
415 | * installs appropriate dt_index_operations vector on success. | |
416 | * | |
417 | * Also probes for features. Operation is successful if all required | |
418 | * features are supported. | |
419 | */ | |
420 | int (*do_index_try)(const struct lu_env *env, | |
421 | struct dt_object *dt, | |
422 | const struct dt_index_features *feat); | |
423 | /** | |
424 | * Add nlink of the object | |
425 | * precondition: dt_object_exists(dt); | |
426 | */ | |
427 | int (*do_declare_ref_add)(const struct lu_env *env, | |
428 | struct dt_object *dt, struct thandle *th); | |
429 | int (*do_ref_add)(const struct lu_env *env, | |
430 | struct dt_object *dt, struct thandle *th); | |
431 | /** | |
432 | * Del nlink of the object | |
433 | * precondition: dt_object_exists(dt); | |
434 | */ | |
435 | int (*do_declare_ref_del)(const struct lu_env *env, | |
436 | struct dt_object *dt, struct thandle *th); | |
437 | int (*do_ref_del)(const struct lu_env *env, | |
438 | struct dt_object *dt, struct thandle *th); | |
439 | ||
440 | struct obd_capa *(*do_capa_get)(const struct lu_env *env, | |
441 | struct dt_object *dt, | |
442 | struct lustre_capa *old, | |
443 | __u64 opc); | |
05289927 AD |
444 | int (*do_object_sync)(const struct lu_env *env, struct dt_object *obj, |
445 | __u64 start, __u64 end); | |
d7e09d03 PT |
446 | /** |
447 | * Get object info of next level. Currently, only get inode from osd. | |
448 | * This is only used by quota b=16542 | |
449 | * precondition: dt_object_exists(dt); | |
450 | */ | |
451 | int (*do_data_get)(const struct lu_env *env, struct dt_object *dt, | |
452 | void **data); | |
453 | ||
454 | /** | |
455 | * Lock object. | |
456 | */ | |
457 | int (*do_object_lock)(const struct lu_env *env, struct dt_object *dt, | |
458 | struct lustre_handle *lh, | |
459 | struct ldlm_enqueue_info *einfo, | |
460 | void *policy); | |
461 | }; | |
462 | ||
463 | /** | |
464 | * Per-dt-object operations on "file body". | |
465 | */ | |
466 | struct dt_body_operations { | |
467 | /** | |
468 | * precondition: dt_object_exists(dt); | |
469 | */ | |
470 | ssize_t (*dbo_read)(const struct lu_env *env, struct dt_object *dt, | |
471 | struct lu_buf *buf, loff_t *pos, | |
472 | struct lustre_capa *capa); | |
473 | /** | |
474 | * precondition: dt_object_exists(dt); | |
475 | */ | |
476 | ssize_t (*dbo_declare_write)(const struct lu_env *env, | |
477 | struct dt_object *dt, | |
478 | const loff_t size, loff_t pos, | |
479 | struct thandle *handle); | |
480 | ssize_t (*dbo_write)(const struct lu_env *env, struct dt_object *dt, | |
481 | const struct lu_buf *buf, loff_t *pos, | |
482 | struct thandle *handle, struct lustre_capa *capa, | |
483 | int ignore_quota); | |
484 | /* | |
485 | * methods for zero-copy IO | |
486 | */ | |
487 | ||
488 | /* | |
489 | * precondition: dt_object_exists(dt); | |
490 | * returns: | |
491 | * < 0 - error code | |
492 | * = 0 - illegal | |
493 | * > 0 - number of local buffers prepared | |
494 | */ | |
495 | int (*dbo_bufs_get)(const struct lu_env *env, struct dt_object *dt, | |
496 | loff_t pos, ssize_t len, struct niobuf_local *lb, | |
497 | int rw, struct lustre_capa *capa); | |
498 | /* | |
499 | * precondition: dt_object_exists(dt); | |
500 | */ | |
501 | int (*dbo_bufs_put)(const struct lu_env *env, struct dt_object *dt, | |
502 | struct niobuf_local *lb, int nr); | |
503 | /* | |
504 | * precondition: dt_object_exists(dt); | |
505 | */ | |
506 | int (*dbo_write_prep)(const struct lu_env *env, struct dt_object *dt, | |
507 | struct niobuf_local *lb, int nr); | |
508 | /* | |
509 | * precondition: dt_object_exists(dt); | |
510 | */ | |
511 | int (*dbo_declare_write_commit)(const struct lu_env *env, | |
512 | struct dt_object *dt, | |
513 | struct niobuf_local *, | |
514 | int, struct thandle *); | |
515 | /* | |
516 | * precondition: dt_object_exists(dt); | |
517 | */ | |
518 | int (*dbo_write_commit)(const struct lu_env *env, struct dt_object *dt, | |
519 | struct niobuf_local *, int, struct thandle *); | |
520 | /* | |
521 | * precondition: dt_object_exists(dt); | |
522 | */ | |
523 | int (*dbo_read_prep)(const struct lu_env *env, struct dt_object *dt, | |
524 | struct niobuf_local *lnb, int nr); | |
525 | int (*dbo_fiemap_get)(const struct lu_env *env, struct dt_object *dt, | |
526 | struct ll_user_fiemap *fm); | |
527 | /** | |
528 | * Punch object's content | |
529 | * precondition: regular object, not index | |
530 | */ | |
531 | int (*dbo_declare_punch)(const struct lu_env *, struct dt_object *, | |
532 | __u64, __u64, struct thandle *th); | |
533 | int (*dbo_punch)(const struct lu_env *env, struct dt_object *dt, | |
534 | __u64 start, __u64 end, struct thandle *th, | |
535 | struct lustre_capa *capa); | |
536 | }; | |
537 | ||
538 | /** | |
539 | * Incomplete type of index record. | |
540 | */ | |
541 | struct dt_rec; | |
542 | ||
543 | /** | |
544 | * Incomplete type of index key. | |
545 | */ | |
546 | struct dt_key; | |
547 | ||
548 | /** | |
549 | * Incomplete type of dt iterator. | |
550 | */ | |
551 | struct dt_it; | |
552 | ||
553 | /** | |
554 | * Per-dt-object operations on object as index. | |
555 | */ | |
556 | struct dt_index_operations { | |
557 | /** | |
558 | * precondition: dt_object_exists(dt); | |
559 | */ | |
560 | int (*dio_lookup)(const struct lu_env *env, struct dt_object *dt, | |
561 | struct dt_rec *rec, const struct dt_key *key, | |
562 | struct lustre_capa *capa); | |
563 | /** | |
564 | * precondition: dt_object_exists(dt); | |
565 | */ | |
566 | int (*dio_declare_insert)(const struct lu_env *env, | |
567 | struct dt_object *dt, | |
568 | const struct dt_rec *rec, | |
569 | const struct dt_key *key, | |
570 | struct thandle *handle); | |
571 | int (*dio_insert)(const struct lu_env *env, struct dt_object *dt, | |
572 | const struct dt_rec *rec, const struct dt_key *key, | |
573 | struct thandle *handle, struct lustre_capa *capa, | |
574 | int ignore_quota); | |
575 | /** | |
576 | * precondition: dt_object_exists(dt); | |
577 | */ | |
578 | int (*dio_declare_delete)(const struct lu_env *env, | |
579 | struct dt_object *dt, | |
580 | const struct dt_key *key, | |
581 | struct thandle *handle); | |
582 | int (*dio_delete)(const struct lu_env *env, struct dt_object *dt, | |
583 | const struct dt_key *key, struct thandle *handle, | |
584 | struct lustre_capa *capa); | |
585 | /** | |
586 | * Iterator interface | |
587 | */ | |
588 | struct dt_it_ops { | |
589 | /** | |
590 | * Allocate and initialize new iterator. | |
591 | * | |
592 | * precondition: dt_object_exists(dt); | |
593 | */ | |
594 | struct dt_it *(*init)(const struct lu_env *env, | |
595 | struct dt_object *dt, | |
596 | __u32 attr, | |
597 | struct lustre_capa *capa); | |
598 | void (*fini)(const struct lu_env *env, | |
599 | struct dt_it *di); | |
600 | int (*get)(const struct lu_env *env, | |
601 | struct dt_it *di, | |
602 | const struct dt_key *key); | |
603 | void (*put)(const struct lu_env *env, | |
604 | struct dt_it *di); | |
605 | int (*next)(const struct lu_env *env, | |
606 | struct dt_it *di); | |
607 | struct dt_key *(*key)(const struct lu_env *env, | |
608 | const struct dt_it *di); | |
609 | int (*key_size)(const struct lu_env *env, | |
610 | const struct dt_it *di); | |
611 | int (*rec)(const struct lu_env *env, | |
612 | const struct dt_it *di, | |
613 | struct dt_rec *rec, | |
614 | __u32 attr); | |
615 | __u64 (*store)(const struct lu_env *env, | |
616 | const struct dt_it *di); | |
617 | int (*load)(const struct lu_env *env, | |
618 | const struct dt_it *di, __u64 hash); | |
619 | int (*key_rec)(const struct lu_env *env, | |
620 | const struct dt_it *di, void* key_rec); | |
621 | } dio_it; | |
622 | }; | |
623 | ||
624 | enum dt_otable_it_valid { | |
625 | DOIV_ERROR_HANDLE = 0x0001, | |
626 | }; | |
627 | ||
628 | enum dt_otable_it_flags { | |
629 | /* Exit when fail. */ | |
630 | DOIF_FAILOUT = 0x0001, | |
631 | ||
632 | /* Reset iteration position to the device beginning. */ | |
633 | DOIF_RESET = 0x0002, | |
634 | ||
635 | /* There is up layer component uses the iteration. */ | |
636 | DOIF_OUTUSED = 0x0004, | |
637 | }; | |
638 | ||
639 | /* otable based iteration needs to use the common DT interation APIs. | |
640 | * To initialize the iteration, it needs call dio_it::init() firstly. | |
641 | * Here is how the otable based iteration should prepare arguments to | |
642 | * call dt_it_ops::init(). | |
643 | * | |
644 | * For otable based iteration, the 32-bits 'attr' for dt_it_ops::init() | |
645 | * is composed of two parts: | |
646 | * low 16-bits is for valid bits, high 16-bits is for flags bits. */ | |
647 | #define DT_OTABLE_IT_FLAGS_SHIFT 16 | |
648 | #define DT_OTABLE_IT_FLAGS_MASK 0xffff0000 | |
649 | ||
650 | struct dt_device { | |
651 | struct lu_device dd_lu_dev; | |
652 | const struct dt_device_operations *dd_ops; | |
653 | ||
654 | /** | |
655 | * List of dt_txn_callback (see below). This is not protected in any | |
656 | * way, because callbacks are supposed to be added/deleted only during | |
657 | * single-threaded start-up shut-down procedures. | |
658 | */ | |
659 | struct list_head dd_txn_callbacks; | |
660 | }; | |
661 | ||
662 | int dt_device_init(struct dt_device *dev, struct lu_device_type *t); | |
663 | void dt_device_fini(struct dt_device *dev); | |
664 | ||
665 | static inline int lu_device_is_dt(const struct lu_device *d) | |
666 | { | |
667 | return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_DT); | |
668 | } | |
669 | ||
670 | static inline struct dt_device * lu2dt_dev(struct lu_device *l) | |
671 | { | |
672 | LASSERT(lu_device_is_dt(l)); | |
673 | return container_of0(l, struct dt_device, dd_lu_dev); | |
674 | } | |
675 | ||
676 | struct dt_object { | |
677 | struct lu_object do_lu; | |
678 | const struct dt_object_operations *do_ops; | |
679 | const struct dt_body_operations *do_body_ops; | |
680 | const struct dt_index_operations *do_index_ops; | |
681 | }; | |
682 | ||
683 | /* | |
684 | * In-core representation of per-device local object OID storage | |
685 | */ | |
686 | struct local_oid_storage { | |
687 | /* all initialized llog systems on this node linked by this */ | |
688 | struct list_head los_list; | |
689 | ||
690 | /* how many handle's reference this los has */ | |
691 | atomic_t los_refcount; | |
692 | struct dt_device *los_dev; | |
693 | struct dt_object *los_obj; | |
694 | ||
695 | /* data used to generate new fids */ | |
aa4e3c8a | 696 | struct mutex los_id_lock; |
d7e09d03 PT |
697 | __u64 los_seq; |
698 | __u32 los_last_oid; | |
699 | }; | |
700 | ||
701 | static inline struct dt_object *lu2dt(struct lu_object *l) | |
702 | { | |
703 | LASSERT(l == NULL || IS_ERR(l) || lu_device_is_dt(l->lo_dev)); | |
704 | return container_of0(l, struct dt_object, do_lu); | |
705 | } | |
706 | ||
707 | int dt_object_init(struct dt_object *obj, | |
708 | struct lu_object_header *h, struct lu_device *d); | |
709 | ||
710 | void dt_object_fini(struct dt_object *obj); | |
711 | ||
712 | static inline int dt_object_exists(const struct dt_object *dt) | |
713 | { | |
714 | return lu_object_exists(&dt->do_lu); | |
715 | } | |
716 | ||
717 | static inline int dt_object_remote(const struct dt_object *dt) | |
718 | { | |
719 | return lu_object_remote(&dt->do_lu); | |
720 | } | |
721 | ||
722 | static inline struct dt_object *lu2dt_obj(struct lu_object *o) | |
723 | { | |
724 | LASSERT(ergo(o != NULL, lu_device_is_dt(o->lo_dev))); | |
725 | return container_of0(o, struct dt_object, do_lu); | |
726 | } | |
727 | ||
728 | /** | |
729 | * This is the general purpose transaction handle. | |
730 | * 1. Transaction Life Cycle | |
731 | * This transaction handle is allocated upon starting a new transaction, | |
732 | * and deallocated after this transaction is committed. | |
733 | * 2. Transaction Nesting | |
734 | * We do _NOT_ support nested transaction. So, every thread should only | |
735 | * have one active transaction, and a transaction only belongs to one | |
736 | * thread. Due to this, transaction handle need no reference count. | |
737 | * 3. Transaction & dt_object locking | |
738 | * dt_object locks should be taken inside transaction. | |
739 | * 4. Transaction & RPC | |
740 | * No RPC request should be issued inside transaction. | |
741 | */ | |
742 | struct thandle { | |
743 | /** the dt device on which the transactions are executed */ | |
744 | struct dt_device *th_dev; | |
745 | ||
746 | /** context for this transaction, tag is LCT_TX_HANDLE */ | |
747 | struct lu_context th_ctx; | |
748 | ||
749 | /** additional tags (layers can add in declare) */ | |
750 | __u32 th_tags; | |
751 | ||
752 | /** the last operation result in this transaction. | |
753 | * this value is used in recovery */ | |
754 | __s32 th_result; | |
755 | ||
756 | /** whether we need sync commit */ | |
757 | unsigned int th_sync:1; | |
758 | ||
759 | /* local transation, no need to inform other layers */ | |
760 | unsigned int th_local:1; | |
761 | ||
762 | /* In DNE, one transaction can be disassemblied into | |
763 | * updates on several different MDTs, and these updates | |
764 | * will be attached to th_remote_update_list per target. | |
765 | * Only single thread will access the list, no need lock | |
766 | */ | |
767 | struct list_head th_remote_update_list; | |
768 | struct update_request *th_current_request; | |
769 | }; | |
770 | ||
771 | /** | |
772 | * Transaction call-backs. | |
773 | * | |
774 | * These are invoked by osd (or underlying transaction engine) when | |
775 | * transaction changes state. | |
776 | * | |
777 | * Call-backs are used by upper layers to modify transaction parameters and to | |
778 | * perform some actions on for each transaction state transition. Typical | |
779 | * example is mdt registering call-back to write into last-received file | |
780 | * before each transaction commit. | |
781 | */ | |
782 | struct dt_txn_callback { | |
783 | int (*dtc_txn_start)(const struct lu_env *env, | |
784 | struct thandle *txn, void *cookie); | |
785 | int (*dtc_txn_stop)(const struct lu_env *env, | |
786 | struct thandle *txn, void *cookie); | |
787 | void (*dtc_txn_commit)(struct thandle *txn, void *cookie); | |
788 | void *dtc_cookie; | |
789 | __u32 dtc_tag; | |
790 | struct list_head dtc_linkage; | |
791 | }; | |
792 | ||
793 | void dt_txn_callback_add(struct dt_device *dev, struct dt_txn_callback *cb); | |
794 | void dt_txn_callback_del(struct dt_device *dev, struct dt_txn_callback *cb); | |
795 | ||
796 | int dt_txn_hook_start(const struct lu_env *env, | |
797 | struct dt_device *dev, struct thandle *txn); | |
798 | int dt_txn_hook_stop(const struct lu_env *env, struct thandle *txn); | |
799 | void dt_txn_hook_commit(struct thandle *txn); | |
800 | ||
801 | int dt_try_as_dir(const struct lu_env *env, struct dt_object *obj); | |
802 | ||
803 | /** | |
804 | * Callback function used for parsing path. | |
805 | * \see llo_store_resolve | |
806 | */ | |
807 | typedef int (*dt_entry_func_t)(const struct lu_env *env, | |
808 | const char *name, | |
809 | void *pvt); | |
810 | ||
811 | #define DT_MAX_PATH 1024 | |
812 | ||
813 | int dt_path_parser(const struct lu_env *env, | |
814 | char *local, dt_entry_func_t entry_func, | |
815 | void *data); | |
816 | ||
817 | struct dt_object * | |
818 | dt_store_resolve(const struct lu_env *env, struct dt_device *dt, | |
819 | const char *path, struct lu_fid *fid); | |
820 | ||
821 | struct dt_object *dt_store_open(const struct lu_env *env, | |
822 | struct dt_device *dt, | |
823 | const char *dirname, | |
824 | const char *filename, | |
825 | struct lu_fid *fid); | |
826 | ||
827 | struct dt_object *dt_find_or_create(const struct lu_env *env, | |
828 | struct dt_device *dt, | |
829 | const struct lu_fid *fid, | |
830 | struct dt_object_format *dof, | |
831 | struct lu_attr *attr); | |
832 | ||
833 | struct dt_object *dt_locate_at(const struct lu_env *env, | |
834 | struct dt_device *dev, | |
835 | const struct lu_fid *fid, | |
836 | struct lu_device *top_dev); | |
837 | static inline struct dt_object * | |
838 | dt_locate(const struct lu_env *env, struct dt_device *dev, | |
839 | const struct lu_fid *fid) | |
840 | { | |
841 | return dt_locate_at(env, dev, fid, dev->dd_lu_dev.ld_site->ls_top_dev); | |
842 | } | |
843 | ||
844 | ||
845 | int local_oid_storage_init(const struct lu_env *env, struct dt_device *dev, | |
846 | const struct lu_fid *first_fid, | |
847 | struct local_oid_storage **los); | |
848 | void local_oid_storage_fini(const struct lu_env *env, | |
849 | struct local_oid_storage *los); | |
850 | int local_object_fid_generate(const struct lu_env *env, | |
851 | struct local_oid_storage *los, | |
852 | struct lu_fid *fid); | |
853 | int local_object_declare_create(const struct lu_env *env, | |
854 | struct local_oid_storage *los, | |
855 | struct dt_object *o, | |
856 | struct lu_attr *attr, | |
857 | struct dt_object_format *dof, | |
858 | struct thandle *th); | |
859 | int local_object_create(const struct lu_env *env, | |
860 | struct local_oid_storage *los, | |
861 | struct dt_object *o, | |
862 | struct lu_attr *attr, struct dt_object_format *dof, | |
863 | struct thandle *th); | |
864 | struct dt_object *local_file_find_or_create(const struct lu_env *env, | |
865 | struct local_oid_storage *los, | |
866 | struct dt_object *parent, | |
867 | const char *name, __u32 mode); | |
868 | struct dt_object *local_file_find_or_create_with_fid(const struct lu_env *env, | |
869 | struct dt_device *dt, | |
870 | const struct lu_fid *fid, | |
871 | struct dt_object *parent, | |
872 | const char *name, | |
873 | __u32 mode); | |
874 | struct dt_object * | |
875 | local_index_find_or_create(const struct lu_env *env, | |
876 | struct local_oid_storage *los, | |
877 | struct dt_object *parent, | |
878 | const char *name, __u32 mode, | |
879 | const struct dt_index_features *ft); | |
880 | struct dt_object * | |
881 | local_index_find_or_create_with_fid(const struct lu_env *env, | |
882 | struct dt_device *dt, | |
883 | const struct lu_fid *fid, | |
884 | struct dt_object *parent, | |
885 | const char *name, __u32 mode, | |
886 | const struct dt_index_features *ft); | |
887 | int local_object_unlink(const struct lu_env *env, struct dt_device *dt, | |
888 | struct dt_object *parent, const char *name); | |
889 | ||
890 | static inline int dt_object_lock(const struct lu_env *env, | |
891 | struct dt_object *o, struct lustre_handle *lh, | |
892 | struct ldlm_enqueue_info *einfo, | |
893 | void *policy) | |
894 | { | |
895 | LASSERT(o); | |
896 | LASSERT(o->do_ops); | |
897 | LASSERT(o->do_ops->do_object_lock); | |
898 | return o->do_ops->do_object_lock(env, o, lh, einfo, policy); | |
899 | } | |
900 | ||
901 | int dt_lookup_dir(const struct lu_env *env, struct dt_object *dir, | |
902 | const char *name, struct lu_fid *fid); | |
903 | ||
05289927 AD |
904 | static inline int dt_object_sync(const struct lu_env *env, struct dt_object *o, |
905 | __u64 start, __u64 end) | |
d7e09d03 PT |
906 | { |
907 | LASSERT(o); | |
908 | LASSERT(o->do_ops); | |
909 | LASSERT(o->do_ops->do_object_sync); | |
05289927 | 910 | return o->do_ops->do_object_sync(env, o, start, end); |
d7e09d03 PT |
911 | } |
912 | ||
913 | int dt_declare_version_set(const struct lu_env *env, struct dt_object *o, | |
914 | struct thandle *th); | |
915 | void dt_version_set(const struct lu_env *env, struct dt_object *o, | |
916 | dt_obj_version_t version, struct thandle *th); | |
917 | dt_obj_version_t dt_version_get(const struct lu_env *env, struct dt_object *o); | |
918 | ||
919 | ||
920 | int dt_read(const struct lu_env *env, struct dt_object *dt, | |
921 | struct lu_buf *buf, loff_t *pos); | |
922 | int dt_record_read(const struct lu_env *env, struct dt_object *dt, | |
923 | struct lu_buf *buf, loff_t *pos); | |
924 | int dt_record_write(const struct lu_env *env, struct dt_object *dt, | |
925 | const struct lu_buf *buf, loff_t *pos, struct thandle *th); | |
926 | typedef int (*dt_index_page_build_t)(const struct lu_env *env, | |
927 | union lu_page *lp, int nob, | |
928 | const struct dt_it_ops *iops, | |
929 | struct dt_it *it, __u32 attr, void *arg); | |
930 | int dt_index_walk(const struct lu_env *env, struct dt_object *obj, | |
931 | const struct lu_rdpg *rdpg, dt_index_page_build_t filler, | |
932 | void *arg); | |
933 | int dt_index_read(const struct lu_env *env, struct dt_device *dev, | |
934 | struct idx_info *ii, const struct lu_rdpg *rdpg); | |
935 | ||
936 | static inline struct thandle *dt_trans_create(const struct lu_env *env, | |
937 | struct dt_device *d) | |
938 | { | |
939 | LASSERT(d->dd_ops->dt_trans_create); | |
940 | return d->dd_ops->dt_trans_create(env, d); | |
941 | } | |
942 | ||
943 | static inline int dt_trans_start(const struct lu_env *env, | |
944 | struct dt_device *d, struct thandle *th) | |
945 | { | |
946 | LASSERT(d->dd_ops->dt_trans_start); | |
947 | return d->dd_ops->dt_trans_start(env, d, th); | |
948 | } | |
949 | ||
950 | /* for this transaction hooks shouldn't be called */ | |
951 | static inline int dt_trans_start_local(const struct lu_env *env, | |
952 | struct dt_device *d, struct thandle *th) | |
953 | { | |
954 | LASSERT(d->dd_ops->dt_trans_start); | |
955 | th->th_local = 1; | |
956 | return d->dd_ops->dt_trans_start(env, d, th); | |
957 | } | |
958 | ||
959 | static inline int dt_trans_stop(const struct lu_env *env, | |
960 | struct dt_device *d, struct thandle *th) | |
961 | { | |
962 | LASSERT(d->dd_ops->dt_trans_stop); | |
963 | return d->dd_ops->dt_trans_stop(env, th); | |
964 | } | |
965 | ||
966 | static inline int dt_trans_cb_add(struct thandle *th, | |
967 | struct dt_txn_commit_cb *dcb) | |
968 | { | |
969 | LASSERT(th->th_dev->dd_ops->dt_trans_cb_add); | |
970 | dcb->dcb_magic = TRANS_COMMIT_CB_MAGIC; | |
971 | return th->th_dev->dd_ops->dt_trans_cb_add(th, dcb); | |
972 | } | |
973 | /** @} dt */ | |
974 | ||
975 | ||
976 | static inline int dt_declare_record_write(const struct lu_env *env, | |
977 | struct dt_object *dt, | |
978 | int size, loff_t pos, | |
979 | struct thandle *th) | |
980 | { | |
981 | int rc; | |
982 | ||
983 | LASSERTF(dt != NULL, "dt is NULL when we want to write record\n"); | |
984 | LASSERT(th != NULL); | |
985 | LASSERT(dt->do_body_ops); | |
986 | LASSERT(dt->do_body_ops->dbo_declare_write); | |
987 | rc = dt->do_body_ops->dbo_declare_write(env, dt, size, pos, th); | |
988 | return rc; | |
989 | } | |
990 | ||
991 | static inline int dt_declare_create(const struct lu_env *env, | |
992 | struct dt_object *dt, | |
993 | struct lu_attr *attr, | |
994 | struct dt_allocation_hint *hint, | |
995 | struct dt_object_format *dof, | |
996 | struct thandle *th) | |
997 | { | |
998 | LASSERT(dt); | |
999 | LASSERT(dt->do_ops); | |
1000 | LASSERT(dt->do_ops->do_declare_create); | |
1001 | return dt->do_ops->do_declare_create(env, dt, attr, hint, dof, th); | |
1002 | } | |
1003 | ||
1004 | static inline int dt_create(const struct lu_env *env, | |
1005 | struct dt_object *dt, | |
1006 | struct lu_attr *attr, | |
1007 | struct dt_allocation_hint *hint, | |
1008 | struct dt_object_format *dof, | |
1009 | struct thandle *th) | |
1010 | { | |
1011 | LASSERT(dt); | |
1012 | LASSERT(dt->do_ops); | |
1013 | LASSERT(dt->do_ops->do_create); | |
1014 | return dt->do_ops->do_create(env, dt, attr, hint, dof, th); | |
1015 | } | |
1016 | ||
1017 | static inline int dt_declare_destroy(const struct lu_env *env, | |
1018 | struct dt_object *dt, | |
1019 | struct thandle *th) | |
1020 | { | |
1021 | LASSERT(dt); | |
1022 | LASSERT(dt->do_ops); | |
1023 | LASSERT(dt->do_ops->do_declare_destroy); | |
1024 | return dt->do_ops->do_declare_destroy(env, dt, th); | |
1025 | } | |
1026 | ||
1027 | static inline int dt_destroy(const struct lu_env *env, | |
1028 | struct dt_object *dt, | |
1029 | struct thandle *th) | |
1030 | { | |
1031 | LASSERT(dt); | |
1032 | LASSERT(dt->do_ops); | |
1033 | LASSERT(dt->do_ops->do_destroy); | |
1034 | return dt->do_ops->do_destroy(env, dt, th); | |
1035 | } | |
1036 | ||
1037 | static inline void dt_read_lock(const struct lu_env *env, | |
1038 | struct dt_object *dt, | |
1039 | unsigned role) | |
1040 | { | |
1041 | LASSERT(dt); | |
1042 | LASSERT(dt->do_ops); | |
1043 | LASSERT(dt->do_ops->do_read_lock); | |
1044 | dt->do_ops->do_read_lock(env, dt, role); | |
1045 | } | |
1046 | ||
1047 | static inline void dt_write_lock(const struct lu_env *env, | |
1048 | struct dt_object *dt, | |
1049 | unsigned role) | |
1050 | { | |
1051 | LASSERT(dt); | |
1052 | LASSERT(dt->do_ops); | |
1053 | LASSERT(dt->do_ops->do_write_lock); | |
1054 | dt->do_ops->do_write_lock(env, dt, role); | |
1055 | } | |
1056 | ||
1057 | static inline void dt_read_unlock(const struct lu_env *env, | |
1058 | struct dt_object *dt) | |
1059 | { | |
1060 | LASSERT(dt); | |
1061 | LASSERT(dt->do_ops); | |
1062 | LASSERT(dt->do_ops->do_read_unlock); | |
1063 | dt->do_ops->do_read_unlock(env, dt); | |
1064 | } | |
1065 | ||
1066 | static inline void dt_write_unlock(const struct lu_env *env, | |
1067 | struct dt_object *dt) | |
1068 | { | |
1069 | LASSERT(dt); | |
1070 | LASSERT(dt->do_ops); | |
1071 | LASSERT(dt->do_ops->do_write_unlock); | |
1072 | dt->do_ops->do_write_unlock(env, dt); | |
1073 | } | |
1074 | ||
1075 | static inline int dt_write_locked(const struct lu_env *env, | |
1076 | struct dt_object *dt) | |
1077 | { | |
1078 | LASSERT(dt); | |
1079 | LASSERT(dt->do_ops); | |
1080 | LASSERT(dt->do_ops->do_write_locked); | |
1081 | return dt->do_ops->do_write_locked(env, dt); | |
1082 | } | |
1083 | ||
1084 | static inline int dt_attr_get(const struct lu_env *env, struct dt_object *dt, | |
1085 | struct lu_attr *la, void *arg) | |
1086 | { | |
1087 | LASSERT(dt); | |
1088 | LASSERT(dt->do_ops); | |
1089 | LASSERT(dt->do_ops->do_attr_get); | |
1090 | return dt->do_ops->do_attr_get(env, dt, la, arg); | |
1091 | } | |
1092 | ||
1093 | static inline int dt_declare_attr_set(const struct lu_env *env, | |
1094 | struct dt_object *dt, | |
1095 | const struct lu_attr *la, | |
1096 | struct thandle *th) | |
1097 | { | |
1098 | LASSERT(dt); | |
1099 | LASSERT(dt->do_ops); | |
1100 | LASSERT(dt->do_ops->do_declare_attr_set); | |
1101 | return dt->do_ops->do_declare_attr_set(env, dt, la, th); | |
1102 | } | |
1103 | ||
1104 | static inline int dt_attr_set(const struct lu_env *env, struct dt_object *dt, | |
1105 | const struct lu_attr *la, struct thandle *th, | |
1106 | struct lustre_capa *capa) | |
1107 | { | |
1108 | LASSERT(dt); | |
1109 | LASSERT(dt->do_ops); | |
1110 | LASSERT(dt->do_ops->do_attr_set); | |
1111 | return dt->do_ops->do_attr_set(env, dt, la, th, capa); | |
1112 | } | |
1113 | ||
1114 | static inline int dt_declare_ref_add(const struct lu_env *env, | |
1115 | struct dt_object *dt, struct thandle *th) | |
1116 | { | |
1117 | LASSERT(dt); | |
1118 | LASSERT(dt->do_ops); | |
1119 | LASSERT(dt->do_ops->do_declare_ref_add); | |
1120 | return dt->do_ops->do_declare_ref_add(env, dt, th); | |
1121 | } | |
1122 | ||
1123 | static inline int dt_ref_add(const struct lu_env *env, | |
1124 | struct dt_object *dt, struct thandle *th) | |
1125 | { | |
1126 | LASSERT(dt); | |
1127 | LASSERT(dt->do_ops); | |
1128 | LASSERT(dt->do_ops->do_ref_add); | |
1129 | return dt->do_ops->do_ref_add(env, dt, th); | |
1130 | } | |
1131 | ||
1132 | static inline int dt_declare_ref_del(const struct lu_env *env, | |
1133 | struct dt_object *dt, struct thandle *th) | |
1134 | { | |
1135 | LASSERT(dt); | |
1136 | LASSERT(dt->do_ops); | |
1137 | LASSERT(dt->do_ops->do_declare_ref_del); | |
1138 | return dt->do_ops->do_declare_ref_del(env, dt, th); | |
1139 | } | |
1140 | ||
1141 | static inline int dt_ref_del(const struct lu_env *env, | |
1142 | struct dt_object *dt, struct thandle *th) | |
1143 | { | |
1144 | LASSERT(dt); | |
1145 | LASSERT(dt->do_ops); | |
1146 | LASSERT(dt->do_ops->do_ref_del); | |
1147 | return dt->do_ops->do_ref_del(env, dt, th); | |
1148 | } | |
1149 | ||
1150 | static inline struct obd_capa *dt_capa_get(const struct lu_env *env, | |
1151 | struct dt_object *dt, | |
1152 | struct lustre_capa *old, __u64 opc) | |
1153 | { | |
1154 | LASSERT(dt); | |
1155 | LASSERT(dt->do_ops); | |
1156 | LASSERT(dt->do_ops->do_ref_del); | |
1157 | return dt->do_ops->do_capa_get(env, dt, old, opc); | |
1158 | } | |
1159 | ||
1160 | static inline int dt_bufs_get(const struct lu_env *env, struct dt_object *d, | |
1161 | struct niobuf_remote *rnb, | |
1162 | struct niobuf_local *lnb, int rw, | |
1163 | struct lustre_capa *capa) | |
1164 | { | |
1165 | LASSERT(d); | |
1166 | LASSERT(d->do_body_ops); | |
1167 | LASSERT(d->do_body_ops->dbo_bufs_get); | |
1168 | return d->do_body_ops->dbo_bufs_get(env, d, rnb->offset, | |
1169 | rnb->len, lnb, rw, capa); | |
1170 | } | |
1171 | ||
1172 | static inline int dt_bufs_put(const struct lu_env *env, struct dt_object *d, | |
1173 | struct niobuf_local *lnb, int n) | |
1174 | { | |
1175 | LASSERT(d); | |
1176 | LASSERT(d->do_body_ops); | |
1177 | LASSERT(d->do_body_ops->dbo_bufs_put); | |
1178 | return d->do_body_ops->dbo_bufs_put(env, d, lnb, n); | |
1179 | } | |
1180 | ||
1181 | static inline int dt_write_prep(const struct lu_env *env, struct dt_object *d, | |
1182 | struct niobuf_local *lnb, int n) | |
1183 | { | |
1184 | LASSERT(d); | |
1185 | LASSERT(d->do_body_ops); | |
1186 | LASSERT(d->do_body_ops->dbo_write_prep); | |
1187 | return d->do_body_ops->dbo_write_prep(env, d, lnb, n); | |
1188 | } | |
1189 | ||
1190 | static inline int dt_declare_write_commit(const struct lu_env *env, | |
1191 | struct dt_object *d, | |
1192 | struct niobuf_local *lnb, | |
1193 | int n, struct thandle *th) | |
1194 | { | |
1195 | LASSERTF(d != NULL, "dt is NULL when we want to declare write\n"); | |
1196 | LASSERT(th != NULL); | |
1197 | return d->do_body_ops->dbo_declare_write_commit(env, d, lnb, n, th); | |
1198 | } | |
1199 | ||
1200 | ||
1201 | static inline int dt_write_commit(const struct lu_env *env, | |
1202 | struct dt_object *d, struct niobuf_local *lnb, | |
1203 | int n, struct thandle *th) | |
1204 | { | |
1205 | LASSERT(d); | |
1206 | LASSERT(d->do_body_ops); | |
1207 | LASSERT(d->do_body_ops->dbo_write_commit); | |
1208 | return d->do_body_ops->dbo_write_commit(env, d, lnb, n, th); | |
1209 | } | |
1210 | ||
1211 | static inline int dt_read_prep(const struct lu_env *env, struct dt_object *d, | |
1212 | struct niobuf_local *lnb, int n) | |
1213 | { | |
1214 | LASSERT(d); | |
1215 | LASSERT(d->do_body_ops); | |
1216 | LASSERT(d->do_body_ops->dbo_read_prep); | |
1217 | return d->do_body_ops->dbo_read_prep(env, d, lnb, n); | |
1218 | } | |
1219 | ||
1220 | static inline int dt_declare_punch(const struct lu_env *env, | |
1221 | struct dt_object *dt, __u64 start, | |
1222 | __u64 end, struct thandle *th) | |
1223 | { | |
1224 | LASSERT(dt); | |
1225 | LASSERT(dt->do_body_ops); | |
1226 | LASSERT(dt->do_body_ops->dbo_declare_punch); | |
1227 | return dt->do_body_ops->dbo_declare_punch(env, dt, start, end, th); | |
1228 | } | |
1229 | ||
1230 | static inline int dt_punch(const struct lu_env *env, struct dt_object *dt, | |
1231 | __u64 start, __u64 end, struct thandle *th, | |
1232 | struct lustre_capa *capa) | |
1233 | { | |
1234 | LASSERT(dt); | |
1235 | LASSERT(dt->do_body_ops); | |
1236 | LASSERT(dt->do_body_ops->dbo_punch); | |
1237 | return dt->do_body_ops->dbo_punch(env, dt, start, end, th, capa); | |
1238 | } | |
1239 | ||
1240 | static inline int dt_fiemap_get(const struct lu_env *env, struct dt_object *d, | |
1241 | struct ll_user_fiemap *fm) | |
1242 | { | |
1243 | LASSERT(d); | |
1244 | if (d->do_body_ops == NULL) | |
1245 | return -EPROTO; | |
1246 | if (d->do_body_ops->dbo_fiemap_get == NULL) | |
1247 | return -EOPNOTSUPP; | |
1248 | return d->do_body_ops->dbo_fiemap_get(env, d, fm); | |
1249 | } | |
1250 | ||
1251 | static inline int dt_statfs(const struct lu_env *env, struct dt_device *dev, | |
1252 | struct obd_statfs *osfs) | |
1253 | { | |
1254 | LASSERT(dev); | |
1255 | LASSERT(dev->dd_ops); | |
1256 | LASSERT(dev->dd_ops->dt_statfs); | |
1257 | return dev->dd_ops->dt_statfs(env, dev, osfs); | |
1258 | } | |
1259 | ||
1260 | static inline int dt_root_get(const struct lu_env *env, struct dt_device *dev, | |
1261 | struct lu_fid *f) | |
1262 | { | |
1263 | LASSERT(dev); | |
1264 | LASSERT(dev->dd_ops); | |
1265 | LASSERT(dev->dd_ops->dt_root_get); | |
1266 | return dev->dd_ops->dt_root_get(env, dev, f); | |
1267 | } | |
1268 | ||
1269 | static inline void dt_conf_get(const struct lu_env *env, | |
1270 | const struct dt_device *dev, | |
1271 | struct dt_device_param *param) | |
1272 | { | |
1273 | LASSERT(dev); | |
1274 | LASSERT(dev->dd_ops); | |
1275 | LASSERT(dev->dd_ops->dt_conf_get); | |
1276 | return dev->dd_ops->dt_conf_get(env, dev, param); | |
1277 | } | |
1278 | ||
1279 | static inline int dt_sync(const struct lu_env *env, struct dt_device *dev) | |
1280 | { | |
1281 | LASSERT(dev); | |
1282 | LASSERT(dev->dd_ops); | |
1283 | LASSERT(dev->dd_ops->dt_sync); | |
1284 | return dev->dd_ops->dt_sync(env, dev); | |
1285 | } | |
1286 | ||
1287 | static inline int dt_ro(const struct lu_env *env, struct dt_device *dev) | |
1288 | { | |
1289 | LASSERT(dev); | |
1290 | LASSERT(dev->dd_ops); | |
1291 | LASSERT(dev->dd_ops->dt_ro); | |
1292 | return dev->dd_ops->dt_ro(env, dev); | |
1293 | } | |
1294 | ||
1295 | static inline int dt_declare_insert(const struct lu_env *env, | |
1296 | struct dt_object *dt, | |
1297 | const struct dt_rec *rec, | |
1298 | const struct dt_key *key, | |
1299 | struct thandle *th) | |
1300 | { | |
1301 | LASSERT(dt); | |
1302 | LASSERT(dt->do_index_ops); | |
1303 | LASSERT(dt->do_index_ops->dio_declare_insert); | |
1304 | return dt->do_index_ops->dio_declare_insert(env, dt, rec, key, th); | |
1305 | } | |
1306 | ||
1307 | static inline int dt_insert(const struct lu_env *env, | |
1308 | struct dt_object *dt, | |
1309 | const struct dt_rec *rec, | |
1310 | const struct dt_key *key, | |
1311 | struct thandle *th, | |
1312 | struct lustre_capa *capa, | |
1313 | int noquota) | |
1314 | { | |
1315 | LASSERT(dt); | |
1316 | LASSERT(dt->do_index_ops); | |
1317 | LASSERT(dt->do_index_ops->dio_insert); | |
1318 | return dt->do_index_ops->dio_insert(env, dt, rec, key, th, | |
1319 | capa, noquota); | |
1320 | } | |
1321 | ||
1322 | static inline int dt_declare_xattr_del(const struct lu_env *env, | |
1323 | struct dt_object *dt, | |
1324 | const char *name, | |
1325 | struct thandle *th) | |
1326 | { | |
1327 | LASSERT(dt); | |
1328 | LASSERT(dt->do_ops); | |
1329 | LASSERT(dt->do_ops->do_declare_xattr_del); | |
1330 | return dt->do_ops->do_declare_xattr_del(env, dt, name, th); | |
1331 | } | |
1332 | ||
1333 | static inline int dt_xattr_del(const struct lu_env *env, | |
1334 | struct dt_object *dt, const char *name, | |
1335 | struct thandle *th, | |
1336 | struct lustre_capa *capa) | |
1337 | { | |
1338 | LASSERT(dt); | |
1339 | LASSERT(dt->do_ops); | |
1340 | LASSERT(dt->do_ops->do_xattr_del); | |
1341 | return dt->do_ops->do_xattr_del(env, dt, name, th, capa); | |
1342 | } | |
1343 | ||
1344 | static inline int dt_declare_xattr_set(const struct lu_env *env, | |
1345 | struct dt_object *dt, | |
1346 | const struct lu_buf *buf, | |
1347 | const char *name, int fl, | |
1348 | struct thandle *th) | |
1349 | { | |
1350 | LASSERT(dt); | |
1351 | LASSERT(dt->do_ops); | |
1352 | LASSERT(dt->do_ops->do_declare_xattr_set); | |
1353 | return dt->do_ops->do_declare_xattr_set(env, dt, buf, name, fl, th); | |
1354 | } | |
1355 | ||
1356 | static inline int dt_xattr_set(const struct lu_env *env, | |
1357 | struct dt_object *dt, const struct lu_buf *buf, | |
1358 | const char *name, int fl, struct thandle *th, | |
1359 | struct lustre_capa *capa) | |
1360 | { | |
1361 | LASSERT(dt); | |
1362 | LASSERT(dt->do_ops); | |
1363 | LASSERT(dt->do_ops->do_xattr_set); | |
1364 | return dt->do_ops->do_xattr_set(env, dt, buf, name, fl, th, capa); | |
1365 | } | |
1366 | ||
1367 | static inline int dt_xattr_get(const struct lu_env *env, | |
1368 | struct dt_object *dt, struct lu_buf *buf, | |
1369 | const char *name, struct lustre_capa *capa) | |
1370 | { | |
1371 | LASSERT(dt); | |
1372 | LASSERT(dt->do_ops); | |
1373 | LASSERT(dt->do_ops->do_xattr_get); | |
1374 | return dt->do_ops->do_xattr_get(env, dt, buf, name, capa); | |
1375 | } | |
1376 | ||
1377 | static inline int dt_xattr_list(const struct lu_env *env, | |
1378 | struct dt_object *dt, struct lu_buf *buf, | |
1379 | struct lustre_capa *capa) | |
1380 | { | |
1381 | LASSERT(dt); | |
1382 | LASSERT(dt->do_ops); | |
1383 | LASSERT(dt->do_ops->do_xattr_list); | |
1384 | return dt->do_ops->do_xattr_list(env, dt, buf, capa); | |
1385 | } | |
1386 | ||
1387 | static inline int dt_declare_delete(const struct lu_env *env, | |
1388 | struct dt_object *dt, | |
1389 | const struct dt_key *key, | |
1390 | struct thandle *th) | |
1391 | { | |
1392 | LASSERT(dt); | |
1393 | LASSERT(dt->do_index_ops); | |
1394 | LASSERT(dt->do_index_ops->dio_declare_delete); | |
1395 | return dt->do_index_ops->dio_declare_delete(env, dt, key, th); | |
1396 | } | |
1397 | ||
1398 | static inline int dt_delete(const struct lu_env *env, | |
1399 | struct dt_object *dt, | |
1400 | const struct dt_key *key, | |
1401 | struct thandle *th, | |
1402 | struct lustre_capa *capa) | |
1403 | { | |
1404 | LASSERT(dt); | |
1405 | LASSERT(dt->do_index_ops); | |
1406 | LASSERT(dt->do_index_ops->dio_delete); | |
1407 | return dt->do_index_ops->dio_delete(env, dt, key, th, capa); | |
1408 | } | |
1409 | ||
1410 | static inline int dt_commit_async(const struct lu_env *env, | |
1411 | struct dt_device *dev) | |
1412 | { | |
1413 | LASSERT(dev); | |
1414 | LASSERT(dev->dd_ops); | |
1415 | LASSERT(dev->dd_ops->dt_commit_async); | |
1416 | return dev->dd_ops->dt_commit_async(env, dev); | |
1417 | } | |
1418 | ||
1419 | static inline int dt_init_capa_ctxt(const struct lu_env *env, | |
1420 | struct dt_device *dev, | |
1421 | int mode, unsigned long timeout, | |
1422 | __u32 alg, struct lustre_capa_key *keys) | |
1423 | { | |
1424 | LASSERT(dev); | |
1425 | LASSERT(dev->dd_ops); | |
1426 | LASSERT(dev->dd_ops->dt_init_capa_ctxt); | |
1427 | return dev->dd_ops->dt_init_capa_ctxt(env, dev, mode, | |
1428 | timeout, alg, keys); | |
1429 | } | |
1430 | ||
1431 | static inline int dt_lookup(const struct lu_env *env, | |
1432 | struct dt_object *dt, | |
1433 | struct dt_rec *rec, | |
1434 | const struct dt_key *key, | |
1435 | struct lustre_capa *capa) | |
1436 | { | |
1437 | int ret; | |
1438 | ||
1439 | LASSERT(dt); | |
1440 | LASSERT(dt->do_index_ops); | |
1441 | LASSERT(dt->do_index_ops->dio_lookup); | |
1442 | ||
1443 | ret = dt->do_index_ops->dio_lookup(env, dt, rec, key, capa); | |
1444 | if (ret > 0) | |
1445 | ret = 0; | |
1446 | else if (ret == 0) | |
1447 | ret = -ENOENT; | |
1448 | return ret; | |
1449 | } | |
1450 | ||
1451 | #define LU221_BAD_TIME (0x80000000U + 24 * 3600) | |
1452 | ||
1453 | struct dt_find_hint { | |
1454 | struct lu_fid *dfh_fid; | |
1455 | struct dt_device *dfh_dt; | |
1456 | struct dt_object *dfh_o; | |
1457 | }; | |
1458 | ||
1459 | struct dt_thread_info { | |
1460 | char dti_buf[DT_MAX_PATH]; | |
1461 | struct dt_find_hint dti_dfh; | |
1462 | struct lu_attr dti_attr; | |
1463 | struct lu_fid dti_fid; | |
1464 | struct dt_object_format dti_dof; | |
1465 | struct lustre_mdt_attrs dti_lma; | |
1466 | struct lu_buf dti_lb; | |
1467 | loff_t dti_off; | |
1468 | }; | |
1469 | ||
1470 | extern struct lu_context_key dt_key; | |
1471 | ||
1472 | static inline struct dt_thread_info *dt_info(const struct lu_env *env) | |
1473 | { | |
1474 | struct dt_thread_info *dti; | |
1475 | ||
1476 | dti = lu_context_key_get(&env->le_ctx, &dt_key); | |
1477 | LASSERT(dti); | |
1478 | return dti; | |
1479 | } | |
1480 | ||
1481 | int dt_global_init(void); | |
1482 | void dt_global_fini(void); | |
1483 | ||
1484 | # ifdef LPROCFS | |
1485 | int lprocfs_dt_rd_blksize(char *page, char **start, off_t off, | |
1486 | int count, int *eof, void *data); | |
1487 | int lprocfs_dt_rd_kbytestotal(char *page, char **start, off_t off, | |
1488 | int count, int *eof, void *data); | |
1489 | int lprocfs_dt_rd_kbytesfree(char *page, char **start, off_t off, | |
1490 | int count, int *eof, void *data); | |
1491 | int lprocfs_dt_rd_kbytesavail(char *page, char **start, off_t off, | |
1492 | int count, int *eof, void *data); | |
1493 | int lprocfs_dt_rd_filestotal(char *page, char **start, off_t off, | |
1494 | int count, int *eof, void *data); | |
1495 | int lprocfs_dt_rd_filesfree(char *page, char **start, off_t off, | |
1496 | int count, int *eof, void *data); | |
1497 | # endif /* LPROCFS */ | |
1498 | ||
1499 | #endif /* __LUSTRE_DT_OBJECT_H */ |