4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdd/mdd_internal.h
38 * Author: Wang Di <wangdi@clusterfs.com>
41 #ifndef _MDD_INTERNAL_H
42 #define _MDD_INTERNAL_H
44 #include <lustre_acl.h>
45 #include <lustre_eacl.h>
46 #include <md_object.h>
47 #include <dt_object.h>
48 #include <lustre_lfsck.h>
49 #include <lustre_fid.h>
50 #include <lustre_capa.h>
51 #include <lprocfs_status.h>
52 #include <lustre_log.h>
53 #include <lustre_linkea.h>
56 /** changelog is recording */
57 #define CLM_ON 0x00001
58 /** internal error prevented changelogs from starting */
59 #define CLM_ERR 0x00002
61 /** changelogs turned on */
62 #define CLM_START 0x10000
63 /** changelogs turned off */
64 #define CLM_FINI 0x20000
65 /** some changelog records purged */
66 #define CLM_PURGE 0x40000
68 struct mdd_changelog {
69 spinlock_t mc_lock; /* for index */
74 spinlock_t mc_user_lock;
78 static inline __u64 cl_time(void) {
81 cfs_fs_time_current(&time);
82 return (((__u64)time.tv_sec) << 30) + time.tv_nsec;
85 /** Objects in .lustre dir */
86 struct mdd_dot_lustre_objs {
87 struct mdd_object *mdd_obf;
88 struct mdd_object *mdd_lpf;
91 struct mdd_generic_thread {
92 struct completion mgt_started;
93 struct completion mgt_finished;
100 struct md_device mdd_md_dev;
101 struct obd_export *mdd_child_exp;
102 struct dt_device *mdd_child;
103 struct dt_device *mdd_bottom;
104 struct lu_fid mdd_root_fid; /* /ROOT */
105 struct lu_fid mdd_local_root_fid;
106 struct dt_device_param mdd_dt_conf;
107 struct dt_object *mdd_orphans; /* PENDING directory */
108 struct proc_dir_entry *mdd_proc_entry;
109 struct mdd_changelog mdd_cl;
110 unsigned long mdd_atime_diff;
111 struct mdd_object *mdd_dot_lustre;
112 struct mdd_dot_lustre_objs mdd_dot_lustre_objs;
113 unsigned int mdd_sync_permission;
115 struct local_oid_storage *mdd_los;
116 struct mdd_generic_thread mdd_orph_cleanup_thread;
120 /* The dir object has been unlinked */
128 struct md_object mod_obj;
133 unsigned long mod_flags;
136 struct mdd_thread_info {
137 struct lu_fid mti_fid;
138 struct lu_fid mti_fid2; /* used for be & cpu converting */
140 * only be used by MDD interfaces, can be passed into local MDD APIs.
142 struct lu_attr mti_pattr;
143 struct lu_attr mti_cattr;
144 struct lu_attr mti_tpattr;
145 struct lu_attr mti_tattr;
146 /** used to set c/mtime */
147 struct lu_attr mti_la_for_fix;
148 /* Only used in mdd_object_start */
149 struct lu_attr mti_la_for_start;
150 /* mti_ent and mti_key must be conjoint,
151 * then mti_ent::lde_name will be mti_key. */
152 struct lu_dirent mti_ent;
153 char mti_key[NAME_MAX + 16];
154 struct lu_buf mti_buf[4];
155 struct lu_buf mti_big_buf; /* biggish persistent buf */
156 struct lu_buf mti_link_buf; /* buf for link ea */
158 char mti_xattr_buf[LUSTRE_POSIX_ACL_MAX_SIZE];
159 struct dt_allocation_hint mti_hint;
160 struct dt_object_format mti_dof;
161 struct linkea_data mti_link_data;
162 struct md_op_spec mti_spec;
163 struct dt_insert_rec mti_dt_rec;
164 struct lfsck_request mti_lr;
167 enum mdd_links_add_overflow {
172 extern const char orph_index_name[];
174 int mdd_la_get(const struct lu_env *env, struct mdd_object *obj,
175 struct lu_attr *la, struct lustre_capa *capa);
176 void mdd_flags_xlate(struct mdd_object *obj, __u32 flags);
177 int mdd_attr_get(const struct lu_env *env, struct md_object *obj,
179 int mdd_attr_set(const struct lu_env *env, struct md_object *obj,
180 const struct md_attr *ma);
181 int mdd_attr_set_internal(const struct lu_env *env,
182 struct mdd_object *obj,
183 const struct lu_attr *attr,
184 struct thandle *handle,
186 int mdd_update_time(const struct lu_env *env, struct mdd_object *obj,
187 const struct lu_attr *oattr, struct lu_attr *attr,
188 struct thandle *handle);
189 int mdd_object_create_internal(const struct lu_env *env, struct mdd_object *p,
190 struct mdd_object *c, struct lu_attr *attr,
191 struct thandle *handle,
192 const struct md_op_spec *spec,
193 struct dt_allocation_hint *hint);
196 void mdd_write_lock(const struct lu_env *env, struct mdd_object *obj,
197 enum mdd_object_role role);
198 void mdd_read_lock(const struct lu_env *env, struct mdd_object *obj,
199 enum mdd_object_role role);
200 void mdd_write_unlock(const struct lu_env *env, struct mdd_object *obj);
201 void mdd_read_unlock(const struct lu_env *env, struct mdd_object *obj);
202 int mdd_write_locked(const struct lu_env *env, struct mdd_object *obj);
205 int mdd_is_subdir(const struct lu_env *env, struct md_object *mo,
206 const struct lu_fid *fid, struct lu_fid *sfid);
207 int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj,
208 const struct lu_attr *pattr, struct mdd_object *cobj,
210 int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj,
211 const struct lu_attr *pattr, const struct lu_attr *attr);
212 int mdd_may_delete(const struct lu_env *env, struct mdd_object *tpobj,
213 const struct lu_attr *tpattr, struct mdd_object *tobj,
214 const struct lu_attr *tattr, const struct lu_attr *cattr,
215 int check_perm, int check_empty);
216 int mdd_unlink_sanity_check(const struct lu_env *env, struct mdd_object *pobj,
217 const struct lu_attr *pattr,
218 struct mdd_object *cobj,
219 const struct lu_attr *cattr);
220 int mdd_finish_unlink(const struct lu_env *env, struct mdd_object *obj,
221 struct md_attr *ma, const struct mdd_object *pobj,
222 const struct lu_name *lname, struct thandle *th);
224 int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid);
225 int mdd_lookup(const struct lu_env *env,
226 struct md_object *pobj, const struct lu_name *lname,
227 struct lu_fid* fid, struct md_op_spec *spec);
228 int mdd_links_read(const struct lu_env *env, struct mdd_object *mdd_obj,
229 struct linkea_data *ldata);
230 int mdd_declare_links_add(const struct lu_env *env, struct mdd_object *mdd_obj,
231 struct thandle *handle, struct linkea_data *ldata,
232 enum mdd_links_add_overflow overflow);
233 int mdd_links_write(const struct lu_env *env, struct mdd_object *mdd_obj,
234 struct linkea_data *ldata, struct thandle *handle);
235 struct lu_buf *mdd_links_get(const struct lu_env *env,
236 struct mdd_object *mdd_obj);
237 int mdd_links_rename(const struct lu_env *env,
238 struct mdd_object *mdd_obj,
239 const struct lu_fid *oldpfid,
240 const struct lu_name *oldlname,
241 const struct lu_fid *newpfid,
242 const struct lu_name *newlname,
243 struct thandle *handle,
244 struct linkea_data *ldata,
245 int first, int check);
247 struct mdd_thread_info *mdd_env_info(const struct lu_env *env);
249 #define MDD_ENV_VAR(env, var) (&mdd_env_info(env)->mti_##var)
251 struct lu_buf *mdd_buf_get(const struct lu_env *env, void *area, ssize_t len);
252 const struct lu_buf *mdd_buf_get_const(const struct lu_env *env,
253 const void *area, ssize_t len);
255 int mdd_orphan_cleanup(const struct lu_env *env, struct mdd_device *d);
256 int __mdd_orphan_add(const struct lu_env *, struct mdd_object *,
258 int __mdd_orphan_del(const struct lu_env *, struct mdd_object *,
260 int orph_index_init(const struct lu_env *env, struct mdd_device *mdd);
261 void orph_index_fini(const struct lu_env *env, struct mdd_device *mdd);
262 int orph_declare_index_insert(const struct lu_env *, struct mdd_object *,
263 umode_t mode, struct thandle *);
264 int orph_declare_index_delete(const struct lu_env *, struct mdd_object *,
268 int mdd_procfs_init(struct mdd_device *mdd, const char *name);
269 void mdd_procfs_fini(struct mdd_device *mdd);
272 extern struct kmem_cache *mdd_object_kmem;
273 extern const struct md_dir_operations mdd_dir_ops;
274 extern const struct md_object_operations mdd_obj_ops;
275 int mdd_readlink(const struct lu_env *env, struct md_object *obj,
277 int accmode(const struct lu_env *env, const struct lu_attr *la, int flags);
278 extern struct lu_context_key mdd_thread_key;
279 extern const struct lu_device_operations mdd_lu_ops;
281 struct mdd_object *mdd_object_find(const struct lu_env *env,
282 struct mdd_device *d,
283 const struct lu_fid *f);
284 int mdd_readpage(const struct lu_env *env, struct md_object *obj,
285 const struct lu_rdpg *rdpg);
286 int mdd_declare_changelog_store(const struct lu_env *env,
287 struct mdd_device *mdd,
288 const struct lu_name *tname,
289 const struct lu_name *sname,
290 struct thandle *handle);
291 void mdd_changelog_rec_ext_jobid(struct changelog_rec *rec, const char *jobid);
292 int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd,
293 struct llog_changelog_rec *rec, struct thandle *th);
294 int mdd_changelog_data_store(const struct lu_env *env, struct mdd_device *mdd,
295 enum changelog_rec_type type, int flags,
296 struct mdd_object *mdd_obj,
297 struct thandle *handle);
298 int mdd_changelog_ns_store(const struct lu_env *env, struct mdd_device *mdd,
299 enum changelog_rec_type type,
300 enum changelog_rec_flags crf,
301 struct mdd_object *target,
302 const struct lu_fid *tpfid,
303 const struct lu_fid *sfid,
304 const struct lu_fid *spfid,
305 const struct lu_name *tname,
306 const struct lu_name *sname,
307 struct thandle *handle);
308 int mdd_declare_object_create_internal(const struct lu_env *env,
309 struct mdd_object *p,
310 struct mdd_object *c,
311 struct lu_attr *attr,
312 struct thandle *handle,
313 const struct md_op_spec *spec,
314 struct dt_allocation_hint *hint);
315 int mdd_get_lov_ea(const struct lu_env *env, struct mdd_object *obj,
316 struct lu_buf *lmm_buf);
319 void mdd_object_make_hint(const struct lu_env *env, struct mdd_object *parent,
320 struct mdd_object *child, const struct lu_attr *attr,
321 const struct md_op_spec *spec,
322 struct dt_allocation_hint *hint);
324 static inline void mdd_object_get(struct mdd_object *o)
326 lu_object_get(&o->mod_obj.mo_lu);
329 static inline void mdd_object_put(const struct lu_env *env,
330 struct mdd_object *o)
332 lu_object_put(env, &o->mod_obj.mo_lu);
335 struct thandle *mdd_trans_create(const struct lu_env *env,
336 struct mdd_device *mdd);
337 int mdd_trans_start(const struct lu_env *env, struct mdd_device *mdd,
339 int mdd_trans_stop(const struct lu_env *env, struct mdd_device *mdd,
340 int rc, struct thandle *handle);
343 struct lu_object *mdd_object_alloc(const struct lu_env *env,
344 const struct lu_object_header *hdr,
345 struct lu_device *d);
346 int mdd_local_file_create(const struct lu_env *env, struct mdd_device *mdd,
347 const struct lu_fid *pfid, const char *name,
348 __u32 mode, struct lu_fid *fid);
350 int mdd_acl_chmod(const struct lu_env *env, struct mdd_object *o, __u32 mode,
351 struct thandle *handle);
352 int mdd_acl_set(const struct lu_env *env, struct mdd_object *obj,
353 struct lu_attr *attr, const struct lu_buf *buf, int fl);
354 int __mdd_fix_mode_acl(const struct lu_env *env, struct lu_buf *buf,
356 int __mdd_permission_internal(const struct lu_env *env, struct mdd_object *obj,
357 const struct lu_attr *la, int mask, int role);
358 int mdd_permission(const struct lu_env *env,
359 struct md_object *pobj, struct md_object *cobj,
360 struct md_attr *ma, int mask);
361 int mdd_capa_get(const struct lu_env *env, struct md_object *obj,
362 struct lustre_capa *capa, int renewal);
363 int mdd_generic_thread_start(struct mdd_generic_thread *thread,
364 int (*func)(void *), void *data, char *name);
365 void mdd_generic_thread_stop(struct mdd_generic_thread *thread);
368 int mdd_compat_fixes(const struct lu_env *env, struct mdd_device *mdd);
370 /* inline functions */
371 static inline int lu_device_is_mdd(struct lu_device *d)
373 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdd_lu_ops);
376 static inline struct mdd_device* lu2mdd_dev(struct lu_device *d)
378 LASSERT(lu_device_is_mdd(d));
379 return container_of0(d, struct mdd_device, mdd_md_dev.md_lu_dev);
382 static inline struct lu_device *mdd2lu_dev(struct mdd_device *d)
384 return (&d->mdd_md_dev.md_lu_dev);
387 static inline struct mdd_object *lu2mdd_obj(struct lu_object *o)
389 LASSERT(ergo(o != NULL, lu_device_is_mdd(o->lo_dev)));
390 return container_of0(o, struct mdd_object, mod_obj.mo_lu);
393 static inline struct mdd_device* mdo2mdd(struct md_object *mdo)
395 return lu2mdd_dev(mdo->mo_lu.lo_dev);
398 static inline struct mdd_object* md2mdd_obj(struct md_object *mdo)
400 return container_of0(mdo, struct mdd_object, mod_obj);
403 static inline const struct dt_device_operations *
404 mdd_child_ops(struct mdd_device *d)
406 return d->mdd_child->dd_ops;
409 static inline struct lu_object *mdd2lu_obj(struct mdd_object *obj)
411 return &obj->mod_obj.mo_lu;
414 static inline struct dt_object* mdd_object_child(struct mdd_object *o)
416 return container_of0(lu_object_next(mdd2lu_obj(o)),
417 struct dt_object, do_lu);
420 static inline struct obd_device *mdd2obd_dev(struct mdd_device *mdd)
422 return (mdd->mdd_md_dev.md_lu_dev.ld_obd);
425 static inline struct mdd_device *mdd_obj2mdd_dev(struct mdd_object *obj)
427 return mdo2mdd(&obj->mod_obj);
430 static inline const struct lu_fid *mdo2fid(const struct mdd_object *obj)
432 return lu_object_fid(&obj->mod_obj.mo_lu);
435 static inline umode_t mdd_object_type(const struct mdd_object *obj)
437 return lu_object_attr(&obj->mod_obj.mo_lu);
440 static inline int mdd_is_immutable(struct mdd_object *obj)
442 return obj->mod_flags & IMMUTE_OBJ;
445 static inline int mdd_is_dead_obj(struct mdd_object *obj)
447 return obj && obj->mod_flags & DEAD_OBJ;
450 static inline int mdd_is_append(struct mdd_object *obj)
452 return obj->mod_flags & APPEND_OBJ;
455 static inline int mdd_object_exists(struct mdd_object *obj)
457 return lu_object_exists(mdd2lu_obj(obj));
460 static inline int mdd_object_remote(struct mdd_object *obj)
462 return lu_object_remote(mdd2lu_obj(obj));
465 static inline const struct lu_fid *mdd_object_fid(struct mdd_object *obj)
467 return lu_object_fid(mdd2lu_obj(obj));
470 static inline struct seq_server_site *mdd_seq_site(struct mdd_device *mdd)
472 return mdd2lu_dev(mdd)->ld_site->ld_seq_site;
475 static inline struct lustre_capa *mdd_object_capa(const struct lu_env *env,
476 const struct mdd_object *obj)
478 struct lu_capainfo *lci = lu_capainfo_get(env);
479 const struct lu_fid *fid = mdo2fid(obj);
482 /* NB: in mdt_init0 */
486 for (i = 0; i < LU_CAPAINFO_MAX; i++)
487 if (lu_fid_eq(&lci->lci_fid[i], fid))
488 return lci->lci_capa[i];
492 static inline void mdd_set_capainfo(const struct lu_env *env, int offset,
493 const struct mdd_object *obj,
494 struct lustre_capa *capa)
496 struct lu_capainfo *lci = lu_capainfo_get(env);
497 const struct lu_fid *fid = mdo2fid(obj);
499 LASSERT(offset >= 0 && offset < LU_CAPAINFO_MAX);
500 /* NB: in mdt_init0 */
504 lci->lci_fid[offset] = *fid;
505 lci->lci_capa[offset] = capa;
508 static inline const char *mdd_obj_dev_name(const struct mdd_object *obj)
510 return lu_dev_name(obj->mod_obj.mo_lu.lo_dev);
513 #define MAX_ATIME_DIFF 60
515 static inline int mdd_permission_internal(const struct lu_env *env,
516 struct mdd_object *obj,
517 const struct lu_attr *la, int mask)
519 return __mdd_permission_internal(env, obj, la, mask, -1);
522 static inline int mdd_permission_internal_locked(const struct lu_env *env,
523 struct mdd_object *obj,
524 const struct lu_attr *la,
526 enum mdd_object_role role)
528 return __mdd_permission_internal(env, obj, la, mask, role);
531 /* mdd inline func for calling osd_dt_object ops */
532 static inline int mdo_attr_get(const struct lu_env *env, struct mdd_object *obj,
533 struct lu_attr *la, struct lustre_capa *capa)
535 struct dt_object *next = mdd_object_child(obj);
536 return dt_attr_get(env, next, la, capa);
539 static inline int mdo_declare_attr_set(const struct lu_env *env,
540 struct mdd_object *obj,
541 const struct lu_attr *la,
542 struct thandle *handle)
544 struct dt_object *next = mdd_object_child(obj);
545 return dt_declare_attr_set(env, next, la, handle);
548 static inline int mdo_attr_set(const struct lu_env *env,
549 struct mdd_object *obj,
550 const struct lu_attr *la,
551 struct thandle *handle,
552 struct lustre_capa *capa)
554 struct dt_object *next = mdd_object_child(obj);
556 if (!mdd_object_exists(obj))
559 return dt_attr_set(env, next, la, handle, capa);
562 static inline int mdo_xattr_get(const struct lu_env *env,struct mdd_object *obj,
563 struct lu_buf *buf, const char *name,
564 struct lustre_capa *capa)
566 struct dt_object *next = mdd_object_child(obj);
567 return dt_xattr_get(env, next, buf, name, capa);
570 static inline int mdo_declare_xattr_set(const struct lu_env *env,
571 struct mdd_object *obj,
572 const struct lu_buf *buf,
574 int fl, struct thandle *handle)
576 struct dt_object *next = mdd_object_child(obj);
577 return dt_declare_xattr_set(env, next, buf, name, fl, handle);
580 static inline int mdo_xattr_set(const struct lu_env *env,struct mdd_object *obj,
581 const struct lu_buf *buf, const char *name,
582 int fl, struct thandle *handle,
583 struct lustre_capa *capa)
585 struct dt_object *next = mdd_object_child(obj);
587 if (!mdd_object_exists(obj))
590 return dt_xattr_set(env, next, buf, name, fl, handle, capa);
593 static inline int mdo_declare_xattr_del(const struct lu_env *env,
594 struct mdd_object *obj,
596 struct thandle *handle)
598 struct dt_object *next = mdd_object_child(obj);
599 return dt_declare_xattr_del(env, next, name, handle);
602 static inline int mdo_xattr_del(const struct lu_env *env,struct mdd_object *obj,
603 const char *name, struct thandle *handle,
604 struct lustre_capa *capa)
606 struct dt_object *next = mdd_object_child(obj);
608 if (!mdd_object_exists(obj))
611 return dt_xattr_del(env, next, name, handle, capa);
615 mdo_xattr_list(const struct lu_env *env, struct mdd_object *obj,
616 struct lu_buf *buf, struct lustre_capa *capa)
618 struct dt_object *next = mdd_object_child(obj);
620 if (!mdd_object_exists(obj))
623 return dt_xattr_list(env, next, buf, capa);
627 int mdo_declare_index_insert(const struct lu_env *env, struct mdd_object *obj,
628 const struct lu_fid *fid, __u32 type,
629 const char *name, struct thandle *handle)
631 struct dt_object *next = mdd_object_child(obj);
635 * if the object doesn't exist yet, then it's supposed to be created
636 * and declaration of the creation should be enough to insert ./..
639 /* FIXME: remote object should not be awared by MDD layer, but local
640 * creation does not declare insert ./.. (comments above), which
641 * is required by remote directory creation.
642 * This remote check should be removed when mdd_object_exists check is
645 if (mdd_object_exists(obj) || mdd_object_remote(obj)) {
647 if (dt_try_as_dir(env, next)) {
648 struct dt_insert_rec *rec =
649 &mdd_env_info(env)->mti_dt_rec;
652 rec->rec_type = type;
653 rc = dt_declare_insert(env, next,
654 (const struct dt_rec *)rec,
655 (const struct dt_key *)name,
664 int mdo_declare_index_delete(const struct lu_env *env, struct mdd_object *obj,
665 const char *name, struct thandle *handle)
667 struct dt_object *next = mdd_object_child(obj);
669 if (!dt_try_as_dir(env, next))
672 return dt_declare_delete(env, next, (const struct dt_key *)name,
676 static inline int mdo_declare_ref_add(const struct lu_env *env,
677 struct mdd_object *obj,
678 struct thandle *handle)
680 struct dt_object *next = mdd_object_child(obj);
681 return dt_declare_ref_add(env, next, handle);
684 static inline int mdo_ref_add(const struct lu_env *env, struct mdd_object *obj,
685 struct thandle *handle)
687 struct dt_object *next = mdd_object_child(obj);
689 if (!mdd_object_exists(obj))
692 return dt_ref_add(env, next, handle);
695 static inline int mdo_declare_ref_del(const struct lu_env *env,
696 struct mdd_object *obj,
697 struct thandle *handle)
699 struct dt_object *next = mdd_object_child(obj);
700 return dt_declare_ref_del(env, next, handle);
703 static inline int mdo_ref_del(const struct lu_env *env, struct mdd_object *obj,
704 struct thandle *handle)
706 struct dt_object *next = mdd_object_child(obj);
708 if (!mdd_object_exists(obj))
711 return dt_ref_del(env, next, handle);
715 mdo_declare_create_obj(const struct lu_env *env, struct mdd_object *o,
716 struct lu_attr *attr,
717 struct dt_allocation_hint *hint,
718 struct dt_object_format *dof,
719 struct thandle *handle)
721 struct dt_object *next = mdd_object_child(o);
722 return dt_declare_create(env, next, attr, hint, dof, handle);
726 mdo_create_obj(const struct lu_env *env, struct mdd_object *o,
727 struct lu_attr *attr,
728 struct dt_allocation_hint *hint,
729 struct dt_object_format *dof,
730 struct thandle *handle)
732 struct dt_object *next = mdd_object_child(o);
733 return dt_create(env, next, attr, hint, dof, handle);
737 int mdo_declare_destroy(const struct lu_env *env, struct mdd_object *o,
738 struct thandle *handle)
740 struct dt_object *next = mdd_object_child(o);
741 return dt_declare_destroy(env, next, handle);
745 int mdo_destroy(const struct lu_env *env, struct mdd_object *o,
746 struct thandle *handle)
748 struct dt_object *next = mdd_object_child(o);
749 return dt_destroy(env, next, handle);
752 static inline struct obd_capa *
753 mdo_capa_get(const struct lu_env *env, struct mdd_object *obj,
754 struct lustre_capa *old, __u64 opc)
756 struct dt_object *next = mdd_object_child(obj);
758 if (!mdd_object_exists(obj))
759 return ERR_PTR(-ENOENT);
761 return dt_capa_get(env, next, old, opc);