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staging/lustre: get rid of seqno_t and mdsno_t typedefs
[deliverable/linux.git] / drivers / staging / lustre / lustre / include / md_object.h
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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 * lustre/include/md_object.h
37 *
17891183 38 * Extension of lu_object.h for metadata objects
d7e09d03
PT		 39 */
40
41#ifndef _LUSTRE_MD_OBJECT_H
42#define _LUSTRE_MD_OBJECT_H
43
44/** \defgroup md md
45 * Sub-class of lu_object with methods common for "meta-data" objects in MDT
46 * stack.
47 *
48 * Meta-data objects implement namespace operations: you can link, unlink
49 * them, and treat them as directories.
50 *
51 * Examples: mdt, cmm, and mdt are implementations of md interface.
52 * @{
53 */
54
55
56/*
57 * super-class definitions.
58 */
1accaadf 59#include "dt_object.h"
d7e09d03
PT		 60
61struct md_device;
62struct md_device_operations;
63struct md_object;
64struct obd_export;
65
66enum {
67 UCRED_INVALID = -1,
68 UCRED_INIT = 0,
69 UCRED_OLD = 1,
70 UCRED_NEW = 2
71};
72
73enum {
74 MD_CAPAINFO_MAX = 5
75};
76
77/** there are at most 5 fids in one operation, see rename, NOTE the last one
78 * is a temporary one used for is_subdir() */
79struct md_capainfo {
80 __u32 mc_auth;
81 __u32 mc_padding;
82 struct lu_fid mc_fid[MD_CAPAINFO_MAX];
83 struct lustre_capa *mc_capa[MD_CAPAINFO_MAX];
84};
85
86struct md_quota {
87 struct obd_export *mq_exp;
88};
89
90/**
91 * Implemented in mdd/mdd_handler.c.
92 *
93 * XXX should be moved into separate .h/.c together with all md security
94 * related definitions.
95 */
96struct md_capainfo *md_capainfo(const struct lu_env *env);
97struct md_quota *md_quota(const struct lu_env *env);
98
99/** metadata attributes */
100enum ma_valid {
101 MA_INODE = (1 << 0),
102 MA_LOV = (1 << 1),
103 MA_COOKIE = (1 << 2),
104 MA_FLAGS = (1 << 3),
105 MA_LMV = (1 << 4),
106 MA_ACL_DEF = (1 << 5),
107 MA_LOV_DEF = (1 << 6),
108 MA_LAY_GEN = (1 << 7),
109 MA_HSM = (1 << 8),
110 MA_SOM = (1 << 9),
111 MA_PFID = (1 << 10)
112};
113
114typedef enum {
115 MDL_MINMODE = 0,
116 MDL_EX = 1,
117 MDL_PW = 2,
118 MDL_PR = 4,
119 MDL_CW = 8,
120 MDL_CR = 16,
121 MDL_NL = 32,
122 MDL_GROUP = 64,
123 MDL_MAXMODE
124} mdl_mode_t;
125
126typedef enum {
127 MDT_NUL_LOCK = 0,
128 MDT_REG_LOCK = (1 << 0),
129 MDT_PDO_LOCK = (1 << 1)
130} mdl_type_t;
131
132/* memory structure for hsm attributes
133 * for fields description see the on disk structure hsm_attrs
134 * which is defined in lustre_idl.h
135 */
136struct md_hsm {
137 __u32 mh_compat;
138 __u32 mh_flags;
139 __u64 mh_arch_id;
140 __u64 mh_arch_ver;
141};
142
143#define IOEPOCH_INVAL 0
144
145/* memory structure for som attributes
146 * for fields description see the on disk structure som_attrs
147 * which is defined in lustre_idl.h
148 */
149struct md_som_data {
150 __u32 msd_compat;
151 __u32 msd_incompat;
152 __u64 msd_ioepoch;
153 __u64 msd_size;
154 __u64 msd_blocks;
155 __u64 msd_mountid;
156};
157
158struct md_attr {
159 __u64 ma_valid;
160 __u64 ma_need;
161 __u64 ma_attr_flags;
162 struct lu_attr ma_attr;
163 struct lu_fid ma_pfid;
164 struct md_hsm ma_hsm;
165 struct lov_mds_md *ma_lmm;
166 struct lmv_stripe_md *ma_lmv;
167 void *ma_acl;
168 struct llog_cookie *ma_cookie;
169 struct lustre_capa *ma_capa;
170 struct md_som_data *ma_som;
171 int ma_lmm_size;
172 int ma_lmv_size;
173 int ma_acl_size;
174 int ma_cookie_size;
175 __u16 ma_layout_gen;
176};
177
178/** Additional parameters for create */
179struct md_op_spec {
180 union {
181 /** symlink target */
182 const char *sp_symname;
183 /** parent FID for cross-ref mkdir */
184 const struct lu_fid *sp_pfid;
185 /** eadata for regular files */
186 struct md_spec_reg {
187 /** lov objs exist already */
188 const struct lu_fid *fid;
189 const void *eadata;
190 int eadatalen;
191 } sp_ea;
192 } u;
193
194 /** Create flag from client: such as MDS_OPEN_CREAT, and others. */
195 __u64 sp_cr_flags;
196
197 /** don't create lov objects or llog cookie - this replay */
198 unsigned int no_create:1,
199 sp_cr_lookup:1, /* do lookup sanity check or not. */
200 sp_rm_entry:1; /* only remove name entry */
201
202 /** Current lock mode for parent dir where create is performing. */
203 mdl_mode_t sp_cr_mode;
204
205 /** to create directory */
206 const struct dt_index_features *sp_feat;
207};
208
209/**
210 * Operations implemented for each md object (both directory and leaf).
211 */
212struct md_object_operations {
213 int (*moo_permission)(const struct lu_env *env,
214 struct md_object *pobj, struct md_object *cobj,
215 struct md_attr *attr, int mask);
216
217 int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
218 struct md_attr *attr);
219
220 int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
221 const struct md_attr *attr);
222
223 int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
224 struct lu_buf *buf, const char *name);
225
226 int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
227 struct lu_buf *buf);
228
229 int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
230 const struct lu_buf *buf, const char *name,
231 int fl);
232
233 int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
234 const char *name);
235
236 /** This method is used to swap the layouts between 2 objects */
237 int (*moo_swap_layouts)(const struct lu_env *env,
238 struct md_object *obj1, struct md_object *obj2,
239 __u64 flags);
240
241 /** \retval number of bytes actually read upon success */
242 int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
243 const struct lu_rdpg *rdpg);
244
245 int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
246 struct lu_buf *buf);
247 int (*moo_changelog)(const struct lu_env *env,
248 enum changelog_rec_type type, int flags,
249 struct md_object *obj);
250 /** part of cross-ref operation */
251 int (*moo_object_create)(const struct lu_env *env,
252 struct md_object *obj,
253 const struct md_op_spec *spec,
254 struct md_attr *ma);
255
256 int (*moo_ref_add)(const struct lu_env *env,
257 struct md_object *obj,
258 const struct md_attr *ma);
259
260 int (*moo_ref_del)(const struct lu_env *env,
261 struct md_object *obj,
262 struct md_attr *ma);
263
264 int (*moo_open)(const struct lu_env *env,
265 struct md_object *obj, int flag);
266
267 int (*moo_close)(const struct lu_env *env, struct md_object *obj,
268 struct md_attr *ma, int mode);
269
270 int (*moo_capa_get)(const struct lu_env *, struct md_object *,
271 struct lustre_capa *, int renewal);
272
273 int (*moo_object_sync)(const struct lu_env *, struct md_object *);
274
275 int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj,
276 struct lov_mds_md *lmm, struct ldlm_extent *extent,
277 struct lustre_handle *lockh);
278 int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj,
279 struct lov_mds_md *lmm,
280 struct lustre_handle *lockh);
281 int (*moo_object_lock)(const struct lu_env *env, struct md_object *obj,
282 struct lustre_handle *lh,
283 struct ldlm_enqueue_info *einfo,
284 void *policy);
285};
286
287/**
288 * Operations implemented for each directory object.
289 */
290struct md_dir_operations {
291 int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj,
292 const struct lu_fid *fid, struct lu_fid *sfid);
293
294 int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
295 const struct lu_name *lname, struct lu_fid *fid,
296 struct md_op_spec *spec);
297
298 mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
299 struct md_object *obj,
300 mdl_mode_t mode);
301
302 int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
303 const struct lu_name *lname, struct md_object *child,
304 struct md_op_spec *spec,
305 struct md_attr *ma);
306
307 /** This method is used for creating data object for this meta object*/
308 int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
309 struct md_object *o,
310 const struct md_op_spec *spec,
311 struct md_attr *ma);
312
313 int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
314 struct md_object *tpobj, const struct lu_fid *lf,
315 const struct lu_name *lsname, struct md_object *tobj,
316 const struct lu_name *ltname, struct md_attr *ma);
317
318 int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
319 struct md_object *src_obj, const struct lu_name *lname,
320 struct md_attr *ma);
321
322 int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj,
323 struct md_object *cobj, const struct lu_name *lname,
324 struct md_attr *ma, int no_name);
325
326 /** This method is used to compare a requested layout to an existing
327 * layout (struct lov_mds_md_v1/3 vs struct lov_mds_md_v1/3) */
328 int (*mdo_lum_lmm_cmp)(const struct lu_env *env,
329 struct md_object *cobj,
330 const struct md_op_spec *spec,
331 struct md_attr *ma);
332
333 /** partial ops for cross-ref case */
334 int (*mdo_name_insert)(const struct lu_env *env,
335 struct md_object *obj,
336 const struct lu_name *lname,
337 const struct lu_fid *fid,
338 const struct md_attr *ma);
339
340 int (*mdo_name_remove)(const struct lu_env *env,
341 struct md_object *obj,
342 const struct lu_name *lname,
343 const struct md_attr *ma);
344
345 int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj,
346 struct md_object *tobj, const struct lu_fid *fid,
347 const struct lu_name *lname, struct md_attr *ma);
348};
349
350struct md_device_operations {
351 /** meta-data device related handlers. */
352 int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
353 struct lu_fid *f);
354
7fc1f831
AP		 355 int (*mdo_maxeasize_get)(const struct lu_env *env, struct md_device *m,
356 int *easize);
d7e09d03
PT		 357
358 int (*mdo_statfs)(const struct lu_env *env, struct md_device *m,
359 struct obd_statfs *sfs);
360
361 int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m,
362 int mode, unsigned long timeout, __u32 alg,
363 struct lustre_capa_key *keys);
364
365 int (*mdo_update_capa_key)(const struct lu_env *env,
366 struct md_device *m,
367 struct lustre_capa_key *key);
368
369 int (*mdo_llog_ctxt_get)(const struct lu_env *env,
370 struct md_device *m, int idx, void **h);
371
372 int (*mdo_iocontrol)(const struct lu_env *env, struct md_device *m,
373 unsigned int cmd, int len, void *data);
374};
375
376enum md_upcall_event {
377 /** Sync the md layer*/
378 MD_LOV_SYNC = (1 << 0),
379 /** Just for split, no need trans, for replay */
380 MD_NO_TRANS = (1 << 1),
381 MD_LOV_CONFIG = (1 << 2),
382 /** Trigger quota recovery */
383 MD_LOV_QUOTA = (1 << 3)
384};
385
386struct md_upcall {
387 /** this lock protects upcall using against its removal
388 * read lock is for usage the upcall, write - for init/fini */
389 struct rw_semaphore mu_upcall_sem;
390 /** device to call, upper layer normally */
391 struct md_device *mu_upcall_dev;
392 /** upcall function */
393 int (*mu_upcall)(const struct lu_env *env, struct md_device *md,
394 enum md_upcall_event ev, void *data);
395};
396
397struct md_device {
398 struct lu_device md_lu_dev;
399 const struct md_device_operations *md_ops;
400 struct md_upcall md_upcall;
401};
402
403static inline void md_upcall_init(struct md_device *m, void *upcl)
404{
405 init_rwsem(&m->md_upcall.mu_upcall_sem);
406 m->md_upcall.mu_upcall_dev = NULL;
407 m->md_upcall.mu_upcall = upcl;
408}
409
410static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up)
411{
412 down_write(&m->md_upcall.mu_upcall_sem);
413 m->md_upcall.mu_upcall_dev = up;
414 up_write(&m->md_upcall.mu_upcall_sem);
415}
416
417static inline void md_upcall_fini(struct md_device *m)
418{
419 down_write(&m->md_upcall.mu_upcall_sem);
420 m->md_upcall.mu_upcall_dev = NULL;
421 m->md_upcall.mu_upcall = NULL;
422 up_write(&m->md_upcall.mu_upcall_sem);
423}
424
425static inline int md_do_upcall(const struct lu_env *env, struct md_device *m,
426 enum md_upcall_event ev, void *data)
427{
428 int rc = 0;
429 down_read(&m->md_upcall.mu_upcall_sem);
430 if (m->md_upcall.mu_upcall_dev != NULL &&
431 m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) {
432 rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env,
433 m->md_upcall.mu_upcall_dev,
434 ev, data);
435 }
436 up_read(&m->md_upcall.mu_upcall_sem);
437 return rc;
438}
439
440struct md_object {
441 struct lu_object mo_lu;
442 const struct md_object_operations *mo_ops;
443 const struct md_dir_operations *mo_dir_ops;
444};
445
446/**
447 * seq-server site.
448 */
449struct seq_server_site {
450 struct lu_site *ss_lu;
451 /**
452 * mds number of this site.
453 */
114acca8 454 u32 ss_node_id;
d7e09d03
PT		 455 /**
456 * Fid location database
457 */
458 struct lu_server_fld *ss_server_fld;
459 struct lu_client_fld *ss_client_fld;
460
461 /**
462 * Server Seq Manager
463 */
464 struct lu_server_seq *ss_server_seq;
465
466 /**
467 * Controller Seq Manager
468 */
469 struct lu_server_seq *ss_control_seq;
470 struct obd_export *ss_control_exp;
471
472 /**
473 * Client Seq Manager
474 */
475 struct lu_client_seq *ss_client_seq;
476};
477
478static inline struct md_device *lu2md_dev(const struct lu_device *d)
479{
480 LASSERT(IS_ERR(d) || lu_device_is_md(d));
481 return container_of0(d, struct md_device, md_lu_dev);
482}
483
484static inline struct lu_device *md2lu_dev(struct md_device *d)
485{
486 return &d->md_lu_dev;
487}
488
489static inline struct md_object *lu2md(const struct lu_object *o)
490{
491 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->lo_dev));
492 return container_of0(o, struct md_object, mo_lu);
493}
494
495static inline struct md_object *md_object_next(const struct md_object *obj)
496{
497 return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL);
498}
499
500static inline struct md_device *md_obj2dev(const struct md_object *o)
501{
502 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev));
503 return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
504}
505
d7e09d03
PT		 506static inline int md_device_init(struct md_device *md, struct lu_device_type *t)
507{
508 return lu_device_init(&md->md_lu_dev, t);
509}
510
511static inline void md_device_fini(struct md_device *md)
512{
513 lu_device_fini(&md->md_lu_dev);
514}
515
516static inline struct md_object *md_object_find_slice(const struct lu_env *env,
517 struct md_device *md,
518 const struct lu_fid *f)
519{
520 return lu2md(lu_object_find_slice(env, md2lu_dev(md), f, NULL));
521}
522
523
524/** md operations */
525static inline int mo_permission(const struct lu_env *env,
526 struct md_object *p,
527 struct md_object *c,
528 struct md_attr *at,
529 int mask)
530{
531 LASSERT(c->mo_ops->moo_permission);
532 return c->mo_ops->moo_permission(env, p, c, at, mask);
533}
534
535static inline int mo_attr_get(const struct lu_env *env,
536 struct md_object *m,
537 struct md_attr *at)
538{
539 LASSERT(m->mo_ops->moo_attr_get);
540 return m->mo_ops->moo_attr_get(env, m, at);
541}
542
543static inline int mo_readlink(const struct lu_env *env,
544 struct md_object *m,
545 struct lu_buf *buf)
546{
547 LASSERT(m->mo_ops->moo_readlink);
548 return m->mo_ops->moo_readlink(env, m, buf);
549}
550
551static inline int mo_changelog(const struct lu_env *env,
552 enum changelog_rec_type type,
553 int flags, struct md_object *m)
554{
555 LASSERT(m->mo_ops->moo_changelog);
556 return m->mo_ops->moo_changelog(env, type, flags, m);
557}
558
559static inline int mo_attr_set(const struct lu_env *env,
560 struct md_object *m,
561 const struct md_attr *at)
562{
563 LASSERT(m->mo_ops->moo_attr_set);
564 return m->mo_ops->moo_attr_set(env, m, at);
565}
566
567static inline int mo_xattr_get(const struct lu_env *env,
568 struct md_object *m,
569 struct lu_buf *buf,
570 const char *name)
571{
572 LASSERT(m->mo_ops->moo_xattr_get);
573 return m->mo_ops->moo_xattr_get(env, m, buf, name);
574}
575
576static inline int mo_xattr_del(const struct lu_env *env,
577 struct md_object *m,
578 const char *name)
579{
580 LASSERT(m->mo_ops->moo_xattr_del);
581 return m->mo_ops->moo_xattr_del(env, m, name);
582}
583
584static inline int mo_xattr_set(const struct lu_env *env,
585 struct md_object *m,
586 const struct lu_buf *buf,
587 const char *name,
588 int flags)
589{
590 LASSERT(m->mo_ops->moo_xattr_set);
591 return m->mo_ops->moo_xattr_set(env, m, buf, name, flags);
592}
593
594static inline int mo_xattr_list(const struct lu_env *env,
595 struct md_object *m,
596 struct lu_buf *buf)
597{
598 LASSERT(m->mo_ops->moo_xattr_list);
599 return m->mo_ops->moo_xattr_list(env, m, buf);
600}
601
602static inline int mo_swap_layouts(const struct lu_env *env,
603 struct md_object *o1,
604 struct md_object *o2, __u64 flags)
605{
606 LASSERT(o1->mo_ops->moo_swap_layouts);
607 LASSERT(o2->mo_ops->moo_swap_layouts);
608 if (o1->mo_ops->moo_swap_layouts != o2->mo_ops->moo_swap_layouts)
609 return -EPERM;
610 return o1->mo_ops->moo_swap_layouts(env, o1, o2, flags);
611}
612
613static inline int mo_open(const struct lu_env *env,
614 struct md_object *m,
615 int flags)
616{
617 LASSERT(m->mo_ops->moo_open);
618 return m->mo_ops->moo_open(env, m, flags);
619}
620
621static inline int mo_close(const struct lu_env *env,
622 struct md_object *m,
623 struct md_attr *ma,
624 int mode)
625{
626 LASSERT(m->mo_ops->moo_close);
627 return m->mo_ops->moo_close(env, m, ma, mode);
628}
629
630static inline int mo_readpage(const struct lu_env *env,
631 struct md_object *m,
632 const struct lu_rdpg *rdpg)
633{
634 LASSERT(m->mo_ops->moo_readpage);
635 return m->mo_ops->moo_readpage(env, m, rdpg);
636}
637
638static inline int mo_object_create(const struct lu_env *env,
639 struct md_object *m,
640 const struct md_op_spec *spc,
641 struct md_attr *at)
642{
643 LASSERT(m->mo_ops->moo_object_create);
644 return m->mo_ops->moo_object_create(env, m, spc, at);
645}
646
647static inline int mo_ref_add(const struct lu_env *env,
648 struct md_object *m,
649 const struct md_attr *ma)
650{
651 LASSERT(m->mo_ops->moo_ref_add);
652 return m->mo_ops->moo_ref_add(env, m, ma);
653}
654
655static inline int mo_ref_del(const struct lu_env *env,
656 struct md_object *m,
657 struct md_attr *ma)
658{
659 LASSERT(m->mo_ops->moo_ref_del);
660 return m->mo_ops->moo_ref_del(env, m, ma);
661}
662
663static inline int mo_capa_get(const struct lu_env *env,
664 struct md_object *m,
665 struct lustre_capa *c,
666 int renewal)
667{
668 LASSERT(m->mo_ops->moo_capa_get);
669 return m->mo_ops->moo_capa_get(env, m, c, renewal);
670}
671
672static inline int mo_object_sync(const struct lu_env *env, struct md_object *m)
673{
674 LASSERT(m->mo_ops->moo_object_sync);
675 return m->mo_ops->moo_object_sync(env, m);
676}
677
678static inline int mo_file_lock(const struct lu_env *env, struct md_object *m,
679 struct lov_mds_md *lmm,
680 struct ldlm_extent *extent,
681 struct lustre_handle *lockh)
682{
683 LASSERT(m->mo_ops->moo_file_lock);
684 return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh);
685}
686
687static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m,
688 struct lov_mds_md *lmm,
689 struct lustre_handle *lockh)
690{
691 LASSERT(m->mo_ops->moo_file_unlock);
692 return m->mo_ops->moo_file_unlock(env, m, lmm, lockh);
693}
694
695static inline int mo_object_lock(const struct lu_env *env,
696 struct md_object *m,
697 struct lustre_handle *lh,
698 struct ldlm_enqueue_info *einfo,
699 void *policy)
700{
701 LASSERT(m->mo_ops->moo_object_lock);
702 return m->mo_ops->moo_object_lock(env, m, lh, einfo, policy);
703}
704
705static inline int mdo_lookup(const struct lu_env *env,
706 struct md_object *p,
707 const struct lu_name *lname,
708 struct lu_fid *f,
709 struct md_op_spec *spec)
710{
711 LASSERT(p->mo_dir_ops->mdo_lookup);
712 return p->mo_dir_ops->mdo_lookup(env, p, lname, f, spec);
713}
714
715static inline mdl_mode_t mdo_lock_mode(const struct lu_env *env,
716 struct md_object *mo,
717 mdl_mode_t lm)
718{
719 if (mo->mo_dir_ops->mdo_lock_mode == NULL)
720 return MDL_MINMODE;
721 return mo->mo_dir_ops->mdo_lock_mode(env, mo, lm);
722}
723
724static inline int mdo_create(const struct lu_env *env,
725 struct md_object *p,
726 const struct lu_name *lchild_name,
727 struct md_object *c,
728 struct md_op_spec *spc,
729 struct md_attr *at)
730{
731 LASSERT(p->mo_dir_ops->mdo_create);
732 return p->mo_dir_ops->mdo_create(env, p, lchild_name, c, spc, at);
733}
734
735static inline int mdo_create_data(const struct lu_env *env,
736 struct md_object *p,
737 struct md_object *c,
738 const struct md_op_spec *spec,
739 struct md_attr *ma)
740{
741 LASSERT(c->mo_dir_ops->mdo_create_data);
742 return c->mo_dir_ops->mdo_create_data(env, p, c, spec, ma);
743}
744
745static inline int mdo_rename(const struct lu_env *env,
746 struct md_object *sp,
747 struct md_object *tp,
748 const struct lu_fid *lf,
749 const struct lu_name *lsname,
750 struct md_object *t,
751 const struct lu_name *ltname,
752 struct md_attr *ma)
753{
754 LASSERT(tp->mo_dir_ops->mdo_rename);
755 return tp->mo_dir_ops->mdo_rename(env, sp, tp, lf, lsname, t, ltname,
756 ma);
757}
758
759static inline int mdo_is_subdir(const struct lu_env *env,
760 struct md_object *mo,
761 const struct lu_fid *fid,
762 struct lu_fid *sfid)
763{
764 LASSERT(mo->mo_dir_ops->mdo_is_subdir);
765 return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid);
766}
767
768static inline int mdo_link(const struct lu_env *env,
769 struct md_object *p,
770 struct md_object *s,
771 const struct lu_name *lname,
772 struct md_attr *ma)
773{
774 LASSERT(s->mo_dir_ops->mdo_link);
775 return s->mo_dir_ops->mdo_link(env, p, s, lname, ma);
776}
777
778static inline int mdo_unlink(const struct lu_env *env,
779 struct md_object *p,
780 struct md_object *c,
781 const struct lu_name *lname,
782 struct md_attr *ma, int no_name)
783{
784 LASSERT(p->mo_dir_ops->mdo_unlink);
785 return p->mo_dir_ops->mdo_unlink(env, p, c, lname, ma, no_name);
786}
787
788static inline int mdo_lum_lmm_cmp(const struct lu_env *env,
789 struct md_object *c,
790 const struct md_op_spec *spec,
791 struct md_attr *ma)
792{
793 LASSERT(c->mo_dir_ops->mdo_lum_lmm_cmp);
794 return c->mo_dir_ops->mdo_lum_lmm_cmp(env, c, spec, ma);
795}
796
797static inline int mdo_name_insert(const struct lu_env *env,
798 struct md_object *p,
799 const struct lu_name *lname,
800 const struct lu_fid *f,
801 const struct md_attr *ma)
802{
803 LASSERT(p->mo_dir_ops->mdo_name_insert);
804 return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma);
805}
806
807static inline int mdo_name_remove(const struct lu_env *env,
808 struct md_object *p,
809 const struct lu_name *lname,
810 const struct md_attr *ma)
811{
812 LASSERT(p->mo_dir_ops->mdo_name_remove);
813 return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma);
814}
815
816static inline int mdo_rename_tgt(const struct lu_env *env,
817 struct md_object *p,
818 struct md_object *t,
819 const struct lu_fid *lf,
820 const struct lu_name *lname,
821 struct md_attr *ma)
822{
823 if (t) {
824 LASSERT(t->mo_dir_ops->mdo_rename_tgt);
825 return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
826 } else {
827 LASSERT(p->mo_dir_ops->mdo_rename_tgt);
828 return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
829 }
830}
831
832/**
833 * Used in MDD/OUT layer for object lock rule
834 **/
835enum mdd_object_role {
836 MOR_SRC_PARENT,
837 MOR_SRC_CHILD,
838 MOR_TGT_PARENT,
839 MOR_TGT_CHILD,
840 MOR_TGT_ORPHAN
841};
842
843struct dt_device;
844/**
845 * Structure to hold object information. This is used to create object
846 * \pre llod_dir exist
847 */
848struct lu_local_obj_desc {
849 const char *llod_dir;
850 const char *llod_name;
851 __u32 llod_oid;
852 int llod_is_index;
853 const struct dt_index_features *llod_feat;
854 struct list_head llod_linkage;
855};
856
d7e09d03
PT		 857int lustre_buf2som(void *buf, int rc, struct md_som_data *msd);
858int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh);
859void lustre_hsm2buf(void *buf, struct md_hsm *mh);
860
861struct lu_ucred {
862 __u32 uc_valid;
863 __u32 uc_o_uid;
864 __u32 uc_o_gid;
865 __u32 uc_o_fsuid;
866 __u32 uc_o_fsgid;
867 __u32 uc_uid;
868 __u32 uc_gid;
869 __u32 uc_fsuid;
870 __u32 uc_fsgid;
871 __u32 uc_suppgids[2];
872 cfs_cap_t uc_cap;
873 __u32 uc_umask;
c88a6cbb 874 struct group_info *uc_ginfo;
d7e09d03
PT		 875 struct md_identity *uc_identity;
876};
877
878struct lu_ucred *lu_ucred(const struct lu_env *env);
879
880struct lu_ucred *lu_ucred_check(const struct lu_env *env);
881
882struct lu_ucred *lu_ucred_assert(const struct lu_env *env);
883
884int lu_ucred_global_init(void);
885
886void lu_ucred_global_fini(void);
887
888#define md_cap_t(x) (x)
889
890#define MD_CAP_TO_MASK(x) (1 << (x))
891
892#define md_cap_raised(c, flag) (md_cap_t(c) & MD_CAP_TO_MASK(flag))
893
894/* capable() is copied from linux kernel! */
895static inline int md_capable(struct lu_ucred *uc, cfs_cap_t cap)
896{
897 if (md_cap_raised(uc->uc_cap, cap))
898 return 1;
899 return 0;
900}
901
902/** @} md */
903#endif /* _LINUX_MD_OBJECT_H */
Linux kernel - Deliverables
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