1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osd/osd_handler.c
38 * Top-level entry points into osd module
40 * Author: Nikita Danilov <nikita@clusterfs.com>
44 # define EXPORT_SYMTAB
46 #define DEBUG_SUBSYSTEM S_MDS
48 #include <linux/module.h>
50 /* LUSTRE_VERSION_CODE */
51 #include <lustre_ver.h>
52 /* prerequisite for linux/xattr.h */
53 #include <linux/types.h>
54 /* prerequisite for linux/xattr.h */
56 /* XATTR_{REPLACE,CREATE} */
57 #include <linux/xattr.h>
59 * XXX temporary stuff: direct access to ldiskfs/jdb. Interface between osd
60 * and file system is not yet specified.
62 /* handle_t, journal_start(), journal_stop() */
63 #include <linux/jbd.h>
65 #include <linux/ldiskfs_fs.h>
66 #include <linux/ldiskfs_jbd.h>
71 * struct OBD_{ALLOC,FREE}*()
74 #include <obd_support.h>
75 /* struct ptlrpc_thread */
76 #include <lustre_net.h>
79 #include <lustre_fid.h>
80 #include <linux/lustre_iam.h>
82 #include "osd_internal.h"
85 /* llo_* api support */
86 #include <md_object.h>
88 static const char dot[] = ".";
89 static const char dotdot[] = "..";
90 static const char remote_obj_dir[] = "REM_OBJ_DIR";
92 struct osd_directory {
93 struct iam_container od_container;
94 struct iam_descr od_descr;
95 struct semaphore od_sem;
99 struct dt_object oo_dt;
101 * Inode for file system object represented by this osd_object. This
102 * inode is pinned for the whole duration of lu_object life.
104 * Not modified concurrently (either setup early during object
105 * creation, or assigned by osd_object_create() under write lock).
107 struct inode *oo_inode;
108 struct rw_semaphore oo_sem;
109 struct osd_directory *oo_dir;
110 /** protects inode attributes. */
113 * Following two members are used to indicate the presence of dot and
114 * dotdot in the given directory. This is required for interop mode
117 int oo_compat_dot_created;
118 int oo_compat_dotdot_created;
120 const struct lu_env *oo_owner;
121 #ifdef CONFIG_LOCKDEP
122 struct lockdep_map oo_dep_map;
126 static int osd_root_get (const struct lu_env *env,
127 struct dt_device *dev, struct lu_fid *f);
129 static int lu_device_is_osd (const struct lu_device *d);
130 static void osd_mod_exit (void) __exit;
131 static int osd_mod_init (void) __init;
132 static int osd_type_init (struct lu_device_type *t);
133 static void osd_type_fini (struct lu_device_type *t);
134 static int osd_object_init (const struct lu_env *env,
136 const struct lu_object_conf *_);
137 static void osd_object_release(const struct lu_env *env,
138 struct lu_object *l);
139 static int osd_object_print (const struct lu_env *env, void *cookie,
140 lu_printer_t p, const struct lu_object *o);
141 static struct lu_device *osd_device_free (const struct lu_env *env,
142 struct lu_device *m);
143 static void *osd_key_init (const struct lu_context *ctx,
144 struct lu_context_key *key);
145 static void osd_key_fini (const struct lu_context *ctx,
146 struct lu_context_key *key, void *data);
147 static void osd_key_exit (const struct lu_context *ctx,
148 struct lu_context_key *key, void *data);
149 static int osd_has_index (const struct osd_object *obj);
150 static void osd_object_init0 (struct osd_object *obj);
151 static int osd_device_init (const struct lu_env *env,
152 struct lu_device *d, const char *,
154 static int osd_fid_lookup (const struct lu_env *env,
155 struct osd_object *obj,
156 const struct lu_fid *fid);
157 static void osd_inode_getattr (const struct lu_env *env,
158 struct inode *inode, struct lu_attr *attr);
159 static int osd_inode_setattr (const struct lu_env *env,
160 struct inode *inode, const struct lu_attr *attr);
161 static int osd_param_is_sane (const struct osd_device *dev,
162 const struct txn_param *param);
163 static int osd_index_iam_lookup(const struct lu_env *env,
164 struct dt_object *dt,
165 struct dt_rec *rec, const struct dt_key *key,
166 struct lustre_capa *capa);
167 static int osd_index_ea_lookup(const struct lu_env *env,
168 struct dt_object *dt,
169 struct dt_rec *rec, const struct dt_key *key,
170 struct lustre_capa *capa);
171 static int osd_index_iam_insert(const struct lu_env *env,
172 struct dt_object *dt,
173 const struct dt_rec *rec,
174 const struct dt_key *key,
175 struct thandle *handle,
176 struct lustre_capa *capa,
178 static int osd_index_ea_insert (const struct lu_env *env,
179 struct dt_object *dt,
180 const struct dt_rec *rec,
181 const struct dt_key *key,
182 struct thandle *handle,
183 struct lustre_capa *capa,
185 static int osd_index_iam_delete(const struct lu_env *env,
186 struct dt_object *dt, const struct dt_key *key,
187 struct thandle *handle,
188 struct lustre_capa *capa);
189 static int osd_index_ea_delete (const struct lu_env *env,
190 struct dt_object *dt, const struct dt_key *key,
191 struct thandle *handle,
192 struct lustre_capa *capa);
194 static int osd_iam_index_probe (const struct lu_env *env,
195 struct osd_object *o,
196 const struct dt_index_features *feat);
197 static int osd_index_try (const struct lu_env *env,
198 struct dt_object *dt,
199 const struct dt_index_features *feat);
200 static void osd_index_fini (struct osd_object *o);
202 static void osd_it_iam_fini (const struct lu_env *env, struct dt_it *di);
203 static int osd_it_iam_get (const struct lu_env *env,
204 struct dt_it *di, const struct dt_key *key);
205 static void osd_it_iam_put (const struct lu_env *env, struct dt_it *di);
206 static int osd_it_iam_next (const struct lu_env *env, struct dt_it *di);
207 static int osd_it_iam_key_size (const struct lu_env *env,
208 const struct dt_it *di);
209 static void osd_it_ea_fini (const struct lu_env *env, struct dt_it *di);
210 static int osd_it_ea_get (const struct lu_env *env,
211 struct dt_it *di, const struct dt_key *key);
212 static void osd_it_ea_put (const struct lu_env *env, struct dt_it *di);
213 static int osd_it_ea_next (const struct lu_env *env, struct dt_it *di);
214 static int osd_it_ea_key_size(const struct lu_env *env,
215 const struct dt_it *di);
217 static void osd_conf_get (const struct lu_env *env,
218 const struct dt_device *dev,
219 struct dt_device_param *param);
220 static void osd_trans_stop (const struct lu_env *env,
222 static int osd_object_is_root(const struct osd_object *obj);
224 static struct osd_object *osd_obj (const struct lu_object *o);
225 static struct osd_device *osd_dev (const struct lu_device *d);
226 static struct osd_device *osd_dt_dev (const struct dt_device *d);
227 static struct osd_object *osd_dt_obj (const struct dt_object *d);
228 static struct osd_device *osd_obj2dev (const struct osd_object *o);
229 static struct lu_device *osd2lu_dev (struct osd_device *osd);
230 static struct lu_device *osd_device_fini (const struct lu_env *env,
231 struct lu_device *d);
232 static struct lu_device *osd_device_alloc (const struct lu_env *env,
233 struct lu_device_type *t,
234 struct lustre_cfg *cfg);
235 static struct lu_object *osd_object_alloc (const struct lu_env *env,
236 const struct lu_object_header *hdr,
237 struct lu_device *d);
238 static struct inode *osd_iget (struct osd_thread_info *info,
239 struct osd_device *dev,
240 const struct osd_inode_id *id);
241 static struct super_block *osd_sb (const struct osd_device *dev);
242 static struct dt_it *osd_it_iam_init (const struct lu_env *env,
243 struct dt_object *dt,
244 struct lustre_capa *capa);
245 static struct dt_key *osd_it_iam_key (const struct lu_env *env,
246 const struct dt_it *di);
247 static struct dt_rec *osd_it_iam_rec (const struct lu_env *env,
248 const struct dt_it *di);
249 static struct dt_it *osd_it_ea_init (const struct lu_env *env,
250 struct dt_object *dt,
251 struct lustre_capa *capa);
252 static struct dt_key *osd_it_ea_key (const struct lu_env *env,
253 const struct dt_it *di);
254 static struct dt_rec *osd_it_ea_rec (const struct lu_env *env,
255 const struct dt_it *di);
257 static struct timespec *osd_inode_time (const struct lu_env *env,
260 static struct thandle *osd_trans_start (const struct lu_env *env,
262 struct txn_param *p);
263 static journal_t *osd_journal (const struct osd_device *dev);
265 static int __osd_ea_add_rec(struct osd_thread_info *info,
266 struct osd_object *pobj,
267 struct osd_object *cobj,
271 static const struct lu_device_type_operations osd_device_type_ops;
272 static struct lu_device_type osd_device_type;
273 static const struct lu_object_operations osd_lu_obj_ops;
274 static struct obd_ops osd_obd_device_ops;
275 static const struct lu_device_operations osd_lu_ops;
276 static struct lu_context_key osd_key;
277 static const struct dt_object_operations osd_obj_ops;
278 static const struct dt_object_operations osd_obj_ea_ops;
279 static const struct dt_body_operations osd_body_ops;
280 static const struct dt_index_operations osd_index_iam_ops;
281 static const struct dt_index_operations osd_index_ea_ops;
284 struct thandle ot_super;
286 struct journal_callback ot_jcb;
287 /* Link to the device, for debugging. */
288 struct lu_ref_link *ot_dev_link;
292 #ifdef HAVE_QUOTA_SUPPORT
294 osd_push_ctxt(const struct lu_env *env, struct osd_ctxt *save)
296 struct md_ucred *uc = md_ucred(env);
300 save->oc_uid = current->fsuid;
301 save->oc_gid = current->fsgid;
302 save->oc_cap = current->cap_effective;
303 current->fsuid = uc->mu_fsuid;
304 current->fsgid = uc->mu_fsgid;
305 current->cap_effective = uc->mu_cap;
309 osd_pop_ctxt(struct osd_ctxt *save)
311 current->fsuid = save->oc_uid;
312 current->fsgid = save->oc_gid;
313 current->cap_effective = save->oc_cap;
318 * Invariants, assertions.
322 * XXX: do not enable this, until invariant checking code is made thread safe
323 * in the face of pdirops locking.
325 #define OSD_INVARIANT_CHECKS (0)
327 #if OSD_INVARIANT_CHECKS
328 static int osd_invariant(const struct osd_object *obj)
332 ergo(obj->oo_inode != NULL,
333 obj->oo_inode->i_sb == osd_sb(osd_obj2dev(obj)) &&
334 atomic_read(&obj->oo_inode->i_count) > 0) &&
335 ergo(obj->oo_dir != NULL &&
336 obj->oo_dir->od_conationer.ic_object != NULL,
337 obj->oo_dir->od_conationer.ic_object == obj->oo_inode);
340 #define osd_invariant(obj) (1)
343 static inline struct osd_thread_info *osd_oti_get(const struct lu_env *env)
345 return lu_context_key_get(&env->le_ctx, &osd_key);
349 * Concurrency: doesn't matter
351 static int osd_read_locked(const struct lu_env *env, struct osd_object *o)
353 return osd_oti_get(env)->oti_r_locks > 0;
357 * Concurrency: doesn't matter
359 static int osd_write_locked(const struct lu_env *env, struct osd_object *o)
361 struct osd_thread_info *oti = osd_oti_get(env);
362 return oti->oti_w_locks > 0 && o->oo_owner == env;
366 * Concurrency: doesn't access mutable data
368 static int osd_root_get(const struct lu_env *env,
369 struct dt_device *dev, struct lu_fid *f)
373 inode = osd_sb(osd_dt_dev(dev))->s_root->d_inode;
374 lu_igif_build(f, inode->i_ino, inode->i_generation);
379 * OSD object methods.
383 * Concurrency: no concurrent access is possible that early in object
386 static struct lu_object *osd_object_alloc(const struct lu_env *env,
387 const struct lu_object_header *hdr,
390 struct osd_object *mo;
396 l = &mo->oo_dt.do_lu;
397 dt_object_init(&mo->oo_dt, NULL, d);
398 if (osd_dev(d)->od_iop_mode)
399 mo->oo_dt.do_ops = &osd_obj_ea_ops;
401 mo->oo_dt.do_ops = &osd_obj_ops;
403 l->lo_ops = &osd_lu_obj_ops;
404 init_rwsem(&mo->oo_sem);
405 spin_lock_init(&mo->oo_guard);
412 * Concurrency: shouldn't matter.
414 static void osd_object_init0(struct osd_object *obj)
416 LASSERT(obj->oo_inode != NULL);
417 obj->oo_dt.do_body_ops = &osd_body_ops;
418 obj->oo_dt.do_lu.lo_header->loh_attr |=
419 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
423 * Concurrency: no concurrent access is possible that early in object
426 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
427 const struct lu_object_conf *_)
429 struct osd_object *obj = osd_obj(l);
432 LINVRNT(osd_invariant(obj));
434 result = osd_fid_lookup(env, obj, lu_object_fid(l));
436 if (obj->oo_inode != NULL)
437 osd_object_init0(obj);
439 LINVRNT(osd_invariant(obj));
444 * Concurrency: no concurrent access is possible that late in object
447 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
449 struct osd_object *obj = osd_obj(l);
451 LINVRNT(osd_invariant(obj));
453 dt_object_fini(&obj->oo_dt);
457 static struct iam_path_descr *osd_it_ipd_get(const struct lu_env *env,
458 const struct iam_container *bag)
460 return bag->ic_descr->id_ops->id_ipd_alloc(bag,
461 osd_oti_get(env)->oti_it_ipd);
464 static struct iam_path_descr *osd_idx_ipd_get(const struct lu_env *env,
465 const struct iam_container *bag)
467 return bag->ic_descr->id_ops->id_ipd_alloc(bag,
468 osd_oti_get(env)->oti_idx_ipd);
471 static void osd_ipd_put(const struct lu_env *env,
472 const struct iam_container *bag,
473 struct iam_path_descr *ipd)
475 bag->ic_descr->id_ops->id_ipd_free(ipd);
479 * Concurrency: no concurrent access is possible that late in object
482 static void osd_index_fini(struct osd_object *o)
484 struct iam_container *bag;
486 if (o->oo_dir != NULL) {
487 bag = &o->oo_dir->od_container;
488 if (o->oo_inode != NULL) {
489 if (bag->ic_object == o->oo_inode)
490 iam_container_fini(bag);
492 OBD_FREE_PTR(o->oo_dir);
498 * Concurrency: no concurrent access is possible that late in object
499 * life-cycle (for all existing callers, that is. New callers have to provide
500 * their own locking.)
502 static int osd_inode_unlinked(const struct inode *inode)
504 return inode->i_nlink == 0;
508 OSD_TXN_OI_DELETE_CREDITS = 20,
509 OSD_TXN_INODE_DELETE_CREDITS = 20
513 * Concurrency: no concurrent access is possible that late in object
516 static int osd_inode_remove(const struct lu_env *env, struct osd_object *obj)
518 const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
519 struct osd_device *osd = osd_obj2dev(obj);
520 struct osd_thread_info *oti = osd_oti_get(env);
521 struct txn_param *prm = &oti->oti_txn;
525 txn_param_init(prm, OSD_TXN_OI_DELETE_CREDITS +
526 OSD_TXN_INODE_DELETE_CREDITS);
527 th = osd_trans_start(env, &osd->od_dt_dev, prm);
529 result = osd_oi_delete(oti, &osd->od_oi, fid, th);
530 osd_trans_stop(env, th);
532 result = PTR_ERR(th);
537 * Called just before object is freed. Releases all resources except for
538 * object itself (that is released by osd_object_free()).
540 * Concurrency: no concurrent access is possible that late in object
543 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
545 struct osd_object *obj = osd_obj(l);
546 struct inode *inode = obj->oo_inode;
548 LINVRNT(osd_invariant(obj));
551 * If object is unlinked remove fid->ino mapping from object index.
558 if (osd_inode_unlinked(inode)) {
559 result = osd_inode_remove(env, obj);
561 LU_OBJECT_DEBUG(D_ERROR, env, l,
562 "Failed to cleanup: %d\n",
567 obj->oo_inode = NULL;
572 * Concurrency: ->loo_object_release() is called under site spin-lock.
574 static void osd_object_release(const struct lu_env *env,
577 struct osd_object *o = osd_obj(l);
579 LASSERT(!lu_object_is_dying(l->lo_header));
580 if (o->oo_inode != NULL && osd_inode_unlinked(o->oo_inode))
581 set_bit(LU_OBJECT_HEARD_BANSHEE, &l->lo_header->loh_flags);
585 * Concurrency: shouldn't matter.
587 static int osd_object_print(const struct lu_env *env, void *cookie,
588 lu_printer_t p, const struct lu_object *l)
590 struct osd_object *o = osd_obj(l);
593 if (o->oo_dir != NULL)
594 d = o->oo_dir->od_container.ic_descr;
597 return (*p)(env, cookie, LUSTRE_OSD_NAME"-object@%p(i:%p:%lu/%u)[%s]",
599 o->oo_inode ? o->oo_inode->i_ino : 0UL,
600 o->oo_inode ? o->oo_inode->i_generation : 0,
601 d ? d->id_ops->id_name : "plain");
605 * Concurrency: shouldn't matter.
607 int osd_statfs(const struct lu_env *env, struct dt_device *d,
610 struct osd_device *osd = osd_dt_dev(d);
611 struct super_block *sb = osd_sb(osd);
614 spin_lock(&osd->od_osfs_lock);
616 if (cfs_time_before_64(osd->od_osfs_age, cfs_time_shift_64(-1))) {
617 result = ll_do_statfs(sb, &osd->od_kstatfs);
618 if (likely(result == 0)) /* N.B. statfs can't really fail */
619 osd->od_osfs_age = cfs_time_current_64();
622 if (likely(result == 0))
623 *sfs = osd->od_kstatfs;
624 spin_unlock(&osd->od_osfs_lock);
630 * Concurrency: doesn't access mutable data.
632 static void osd_conf_get(const struct lu_env *env,
633 const struct dt_device *dev,
634 struct dt_device_param *param)
637 * XXX should be taken from not-yet-existing fs abstraction layer.
639 param->ddp_max_name_len = LDISKFS_NAME_LEN;
640 param->ddp_max_nlink = LDISKFS_LINK_MAX;
641 param->ddp_block_shift = osd_sb(osd_dt_dev(dev))->s_blocksize_bits;
645 * Helper function to get and fill the buffer with input values.
647 static struct lu_buf *osd_buf_get(const struct lu_env *env, void *area, ssize_t len)
651 buf = &osd_oti_get(env)->oti_buf;
662 * Concurrency: doesn't access mutable data.
664 static int osd_param_is_sane(const struct osd_device *dev,
665 const struct txn_param *param)
667 return param->tp_credits <= osd_journal(dev)->j_max_transaction_buffers;
671 * Concurrency: shouldn't matter.
673 static void osd_trans_commit_cb(struct journal_callback *jcb, int error)
675 struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb);
676 struct thandle *th = &oh->ot_super;
677 struct dt_device *dev = th->th_dev;
678 struct lu_device *lud = &dev->dd_lu_dev;
680 LASSERT(dev != NULL);
681 LASSERT(oh->ot_handle == NULL);
684 CERROR("transaction @0x%p commit error: %d\n", th, error);
686 struct lu_env *env = &osd_dt_dev(dev)->od_env_for_commit;
688 * This od_env_for_commit is only for commit usage. see
691 lu_context_enter(&env->le_ctx);
692 dt_txn_hook_commit(env, th);
693 lu_context_exit(&env->le_ctx);
696 lu_ref_del_at(&lud->ld_reference, oh->ot_dev_link, "osd-tx", th);
700 lu_context_exit(&th->th_ctx);
701 lu_context_fini(&th->th_ctx);
706 * Concurrency: shouldn't matter.
708 static struct thandle *osd_trans_start(const struct lu_env *env,
712 struct osd_device *dev = osd_dt_dev(d);
714 struct osd_thandle *oh;
720 hook_res = dt_txn_hook_start(env, d, p);
722 RETURN(ERR_PTR(hook_res));
724 if (osd_param_is_sane(dev, p)) {
725 OBD_ALLOC_GFP(oh, sizeof *oh, CFS_ALLOC_IO);
727 struct osd_thread_info *oti = osd_oti_get(env);
730 * XXX temporary stuff. Some abstraction layer should
734 jh = journal_start(osd_journal(dev), p->tp_credits);
740 jh->h_sync = p->tp_sync;
741 lu_device_get(&d->dd_lu_dev);
742 oh->ot_dev_link = lu_ref_add
743 (&d->dd_lu_dev.ld_reference,
745 /* add commit callback */
746 lu_context_init(&th->th_ctx, LCT_TX_HANDLE);
747 lu_context_enter(&th->th_ctx);
748 journal_callback_set(jh, osd_trans_commit_cb,
749 (struct journal_callback *)&oh->ot_jcb);
750 LASSERT(oti->oti_txns == 0);
751 LASSERT(oti->oti_r_locks == 0);
752 LASSERT(oti->oti_w_locks == 0);
759 th = ERR_PTR(-ENOMEM);
761 CERROR("Invalid transaction parameters\n");
762 th = ERR_PTR(-EINVAL);
769 * Concurrency: shouldn't matter.
771 static void osd_trans_stop(const struct lu_env *env, struct thandle *th)
774 struct osd_thandle *oh;
775 struct osd_thread_info *oti = osd_oti_get(env);
779 oh = container_of0(th, struct osd_thandle, ot_super);
780 if (oh->ot_handle != NULL) {
781 handle_t *hdl = oh->ot_handle;
783 LASSERT(oti->oti_txns == 1);
785 LASSERT(oti->oti_r_locks == 0);
786 LASSERT(oti->oti_w_locks == 0);
787 result = dt_txn_hook_stop(env, th);
789 CERROR("Failure in transaction hook: %d\n", result);
790 oh->ot_handle = NULL;
791 result = journal_stop(hdl);
793 CERROR("Failure to stop transaction: %d\n", result);
799 * Concurrency: shouldn't matter.
801 static int osd_sync(const struct lu_env *env, struct dt_device *d)
803 CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_NAME);
804 return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
808 * Start commit for OSD device.
810 * An implementation of dt_commit_async method for OSD device.
811 * Asychronously starts underlayng fs sync and thereby a transaction
814 * \param env environment
817 * \see dt_device_operations
819 static int osd_commit_async(const struct lu_env *env,
822 struct super_block *s = osd_sb(osd_dt_dev(d));
825 CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_NAME);
826 RETURN(s->s_op->sync_fs(s, 0));
830 * Concurrency: shouldn't matter.
832 lvfs_sbdev_type fsfilt_ldiskfs_journal_sbdev(struct super_block *);
834 static void osd_ro(const struct lu_env *env, struct dt_device *d)
838 CERROR("*** setting device %s read-only ***\n", LUSTRE_OSD_NAME);
840 __lvfs_set_rdonly(lvfs_sbdev(osd_sb(osd_dt_dev(d))),
841 fsfilt_ldiskfs_journal_sbdev(osd_sb(osd_dt_dev(d))));
847 * Concurrency: serialization provided by callers.
849 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
850 int mode, unsigned long timeout, __u32 alg,
851 struct lustre_capa_key *keys)
853 struct osd_device *dev = osd_dt_dev(d);
856 dev->od_fl_capa = mode;
857 dev->od_capa_timeout = timeout;
858 dev->od_capa_alg = alg;
859 dev->od_capa_keys = keys;
864 * Concurrency: serialization provided by callers.
866 static void osd_init_quota_ctxt(const struct lu_env *env, struct dt_device *d,
867 struct dt_quota_ctxt *ctxt, void *data)
869 struct obd_device *obd = (void *)ctxt;
870 struct vfsmount *mnt = (struct vfsmount *)data;
873 obd->u.obt.obt_sb = mnt->mnt_root->d_inode->i_sb;
874 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
875 obd->obd_lvfs_ctxt.pwdmnt = mnt;
876 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
877 obd->obd_lvfs_ctxt.fs = get_ds();
883 * Note: we do not count into QUOTA here.
884 * If we mount with --data_journal we may need more.
886 static const int osd_dto_credits_noquota[DTO_NR] = {
889 * INDEX_EXTRA_TRANS_BLOCKS(8) +
890 * SINGLEDATA_TRANS_BLOCKS(8)
891 * XXX Note: maybe iam need more, since iam have more level than
894 [DTO_INDEX_INSERT] = 16,
895 [DTO_INDEX_DELETE] = 16,
899 [DTO_IDNEX_UPDATE] = 16,
901 * Create a object. The same as create object in EXT3.
902 * DATA_TRANS_BLOCKS(14) +
903 * INDEX_EXTRA_BLOCKS(8) +
904 * 3(inode bits, groups, GDT)
906 [DTO_OBJECT_CREATE] = 25,
910 [DTO_OBJECT_DELETE] = 25,
913 * 3(inode bits, group, GDT)
915 [DTO_ATTR_SET_BASE] = 3,
917 * Xattr set. The same as xattr of EXT3.
918 * DATA_TRANS_BLOCKS(14)
919 * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS are
920 * also counted in. Do not know why?
922 [DTO_XATTR_SET] = 14,
925 * creadits for inode change during write.
927 [DTO_WRITE_BASE] = 3,
929 * credits for single block write.
931 [DTO_WRITE_BLOCK] = 14,
933 * Attr set credits for chown.
934 * 3 (inode bit, group, GDT)
936 [DTO_ATTR_SET_CHOWN]= 3
940 * Note: we count into QUOTA here.
941 * If we mount with --data_journal we may need more.
943 static const int osd_dto_credits_quota[DTO_NR] = {
945 * INDEX_EXTRA_TRANS_BLOCKS(8) +
946 * SINGLEDATA_TRANS_BLOCKS(8) +
947 * 2 * QUOTA_TRANS_BLOCKS(2)
949 [DTO_INDEX_INSERT] = 20,
951 * INDEX_EXTRA_TRANS_BLOCKS(8) +
952 * SINGLEDATA_TRANS_BLOCKS(8) +
953 * 2 * QUOTA_TRANS_BLOCKS(2)
955 [DTO_INDEX_DELETE] = 20,
959 [DTO_IDNEX_UPDATE] = 16,
961 * Create a object. Same as create object in EXT3 filesystem.
962 * DATA_TRANS_BLOCKS(16) +
963 * INDEX_EXTRA_BLOCKS(8) +
964 * 3(inode bits, groups, GDT) +
965 * 2 * QUOTA_INIT_BLOCKS(25)
967 [DTO_OBJECT_CREATE] = 77,
970 * DATA_TRANS_BLOCKS(16) +
971 * INDEX_EXTRA_BLOCKS(8) +
972 * 3(inode bits, groups, GDT) +
975 [DTO_OBJECT_DELETE] = 27,
978 * 3 (inode bit, group, GDT) +
980 [DTO_ATTR_SET_BASE] = 3,
982 * Xattr set. The same as xattr of EXT3.
983 * DATA_TRANS_BLOCKS(16)
984 * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS are
985 * also counted in. Do not know why?
987 [DTO_XATTR_SET] = 16,
990 * creadits for inode change during write.
992 [DTO_WRITE_BASE] = 3,
994 * credits for single block write.
996 [DTO_WRITE_BLOCK] = 16,
998 * Attr set credits for chown.
999 * 3 (inode bit, group, GDT) +
1000 * 2 * QUOTA_INIT_BLOCKS(25) +
1001 * 2 * QUOTA_DEL_BLOCKS(9)
1003 [DTO_ATTR_SET_CHOWN]= 71
1006 static int osd_credit_get(const struct lu_env *env, struct dt_device *d,
1009 LASSERT(ARRAY_SIZE(osd_dto_credits_noquota) ==
1010 ARRAY_SIZE(osd_dto_credits_quota));
1011 LASSERT(0 <= op && op < ARRAY_SIZE(osd_dto_credits_noquota));
1012 #ifdef HAVE_QUOTA_SUPPORT
1013 if (test_opt(osd_sb(osd_dt_dev(d)), QUOTA))
1014 return osd_dto_credits_quota[op];
1017 return osd_dto_credits_noquota[op];
1020 static const struct dt_device_operations osd_dt_ops = {
1021 .dt_root_get = osd_root_get,
1022 .dt_statfs = osd_statfs,
1023 .dt_trans_start = osd_trans_start,
1024 .dt_trans_stop = osd_trans_stop,
1025 .dt_conf_get = osd_conf_get,
1026 .dt_sync = osd_sync,
1028 .dt_commit_async = osd_commit_async,
1029 .dt_credit_get = osd_credit_get,
1030 .dt_init_capa_ctxt = osd_init_capa_ctxt,
1031 .dt_init_quota_ctxt= osd_init_quota_ctxt,
1034 static void osd_object_read_lock(const struct lu_env *env,
1035 struct dt_object *dt, unsigned role)
1037 struct osd_object *obj = osd_dt_obj(dt);
1038 struct osd_thread_info *oti = osd_oti_get(env);
1040 LINVRNT(osd_invariant(obj));
1042 LASSERT(obj->oo_owner != env);
1043 down_read_nested(&obj->oo_sem, role);
1045 LASSERT(obj->oo_owner == NULL);
1049 static void osd_object_write_lock(const struct lu_env *env,
1050 struct dt_object *dt, unsigned role)
1052 struct osd_object *obj = osd_dt_obj(dt);
1053 struct osd_thread_info *oti = osd_oti_get(env);
1055 LINVRNT(osd_invariant(obj));
1057 LASSERT(obj->oo_owner != env);
1058 down_write_nested(&obj->oo_sem, role);
1060 LASSERT(obj->oo_owner == NULL);
1061 obj->oo_owner = env;
1065 static void osd_object_read_unlock(const struct lu_env *env,
1066 struct dt_object *dt)
1068 struct osd_object *obj = osd_dt_obj(dt);
1069 struct osd_thread_info *oti = osd_oti_get(env);
1071 LINVRNT(osd_invariant(obj));
1073 LASSERT(oti->oti_r_locks > 0);
1075 up_read(&obj->oo_sem);
1078 static void osd_object_write_unlock(const struct lu_env *env,
1079 struct dt_object *dt)
1081 struct osd_object *obj = osd_dt_obj(dt);
1082 struct osd_thread_info *oti = osd_oti_get(env);
1084 LINVRNT(osd_invariant(obj));
1086 LASSERT(obj->oo_owner == env);
1087 LASSERT(oti->oti_w_locks > 0);
1089 obj->oo_owner = NULL;
1090 up_write(&obj->oo_sem);
1093 static int capa_is_sane(const struct lu_env *env,
1094 struct osd_device *dev,
1095 struct lustre_capa *capa,
1096 struct lustre_capa_key *keys)
1098 struct osd_thread_info *oti = osd_oti_get(env);
1099 struct lustre_capa *tcapa = &oti->oti_capa;
1100 struct obd_capa *oc;
1104 oc = capa_lookup(dev->od_capa_hash, capa, 0);
1106 if (capa_is_expired(oc)) {
1107 DEBUG_CAPA(D_ERROR, capa, "expired");
1114 if (capa_is_expired_sec(capa)) {
1115 DEBUG_CAPA(D_ERROR, capa, "expired");
1119 spin_lock(&capa_lock);
1120 for (i = 0; i < 2; i++) {
1121 if (keys[i].lk_keyid == capa->lc_keyid) {
1122 oti->oti_capa_key = keys[i];
1126 spin_unlock(&capa_lock);
1129 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1133 rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1137 if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1138 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1142 oc = capa_add(dev->od_capa_hash, capa);
1148 static int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1149 struct lustre_capa *capa, __u64 opc)
1151 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1152 struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1153 struct md_capainfo *ci;
1156 if (!dev->od_fl_capa)
1159 if (capa == BYPASS_CAPA)
1162 ci = md_capainfo(env);
1166 if (ci->mc_auth == LC_ID_NONE)
1170 CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
1174 if (!lu_fid_eq(fid, &capa->lc_fid)) {
1175 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1180 if (!capa_opc_supported(capa, opc)) {
1181 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1185 if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
1186 DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
1193 static int osd_attr_get(const struct lu_env *env,
1194 struct dt_object *dt,
1195 struct lu_attr *attr,
1196 struct lustre_capa *capa)
1198 struct osd_object *obj = osd_dt_obj(dt);
1200 LASSERT(dt_object_exists(dt));
1201 LINVRNT(osd_invariant(obj));
1203 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1206 spin_lock(&obj->oo_guard);
1207 osd_inode_getattr(env, obj->oo_inode, attr);
1208 spin_unlock(&obj->oo_guard);
1212 static int osd_attr_set(const struct lu_env *env,
1213 struct dt_object *dt,
1214 const struct lu_attr *attr,
1215 struct thandle *handle,
1216 struct lustre_capa *capa)
1218 struct osd_object *obj = osd_dt_obj(dt);
1221 LASSERT(handle != NULL);
1222 LASSERT(dt_object_exists(dt));
1223 LASSERT(osd_invariant(obj));
1225 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1228 spin_lock(&obj->oo_guard);
1229 rc = osd_inode_setattr(env, obj->oo_inode, attr);
1230 spin_unlock(&obj->oo_guard);
1233 mark_inode_dirty(obj->oo_inode);
1237 static struct timespec *osd_inode_time(const struct lu_env *env,
1238 struct inode *inode, __u64 seconds)
1240 struct osd_thread_info *oti = osd_oti_get(env);
1241 struct timespec *t = &oti->oti_time;
1243 t->tv_sec = seconds;
1245 *t = timespec_trunc(*t, get_sb_time_gran(inode->i_sb));
1249 static int osd_inode_setattr(const struct lu_env *env,
1250 struct inode *inode, const struct lu_attr *attr)
1254 bits = attr->la_valid;
1256 LASSERT(!(bits & LA_TYPE)); /* Huh? You want too much. */
1258 #ifdef HAVE_QUOTA_SUPPORT
1259 if ((bits & LA_UID && attr->la_uid != inode->i_uid) ||
1260 (bits & LA_GID && attr->la_gid != inode->i_gid)) {
1261 struct osd_ctxt *save = &osd_oti_get(env)->oti_ctxt;
1265 iattr.ia_valid = bits & (LA_UID | LA_GID);
1266 iattr.ia_uid = attr->la_uid;
1267 iattr.ia_gid = attr->la_gid;
1268 osd_push_ctxt(env, save);
1269 rc = DQUOT_TRANSFER(inode, &iattr) ? -EDQUOT : 0;
1276 if (bits & LA_ATIME)
1277 inode->i_atime = *osd_inode_time(env, inode, attr->la_atime);
1278 if (bits & LA_CTIME)
1279 inode->i_ctime = *osd_inode_time(env, inode, attr->la_ctime);
1280 if (bits & LA_MTIME)
1281 inode->i_mtime = *osd_inode_time(env, inode, attr->la_mtime);
1282 if (bits & LA_SIZE) {
1283 LDISKFS_I(inode)->i_disksize = attr->la_size;
1284 i_size_write(inode, attr->la_size);
1288 * OSD should not change "i_blocks" which is used by quota.
1289 * "i_blocks" should be changed by ldiskfs only.
1290 * Disable this assignment until SOM to fix some EA field. */
1291 if (bits & LA_BLOCKS)
1292 inode->i_blocks = attr->la_blocks;
1295 inode->i_mode = (inode->i_mode & S_IFMT) |
1296 (attr->la_mode & ~S_IFMT);
1298 inode->i_uid = attr->la_uid;
1300 inode->i_gid = attr->la_gid;
1301 if (bits & LA_NLINK)
1302 inode->i_nlink = attr->la_nlink;
1304 inode->i_rdev = attr->la_rdev;
1306 if (bits & LA_FLAGS) {
1307 struct ldiskfs_inode_info *li = LDISKFS_I(inode);
1309 li->i_flags = (li->i_flags & ~LDISKFS_FL_USER_MODIFIABLE) |
1310 (attr->la_flags & LDISKFS_FL_USER_MODIFIABLE);
1318 * XXX temporary solution.
1321 static int osd_create_pre(struct osd_thread_info *info, struct osd_object *obj,
1322 struct lu_attr *attr, struct thandle *th)
1327 static int osd_create_post(struct osd_thread_info *info, struct osd_object *obj,
1328 struct lu_attr *attr, struct thandle *th)
1330 LASSERT(obj->oo_inode != NULL);
1332 osd_object_init0(obj);
1336 extern struct inode *ldiskfs_create_inode(handle_t *handle,
1337 struct inode * dir, int mode);
1338 extern int ldiskfs_add_entry(handle_t *handle, struct dentry *dentry,
1339 struct inode *inode);
1340 extern int ldiskfs_delete_entry(handle_t *handle,
1342 struct ldiskfs_dir_entry_2 * de_del,
1343 struct buffer_head * bh);
1344 extern struct buffer_head * ldiskfs_find_entry(struct dentry *dentry,
1345 struct ldiskfs_dir_entry_2
1347 extern int ldiskfs_add_dot_dotdot(handle_t *handle, struct inode *dir,
1348 struct inode *inode);
1350 extern int ldiskfs_xattr_set_handle(handle_t *handle, struct inode *inode,
1351 int name_index, const char *name,
1352 const void *value, size_t value_len,
1355 static struct dentry * osd_child_dentry_get(const struct lu_env *env,
1356 struct osd_object *obj,
1360 struct osd_thread_info *info = osd_oti_get(env);
1361 struct dentry *child_dentry = &info->oti_child_dentry;
1362 struct dentry *obj_dentry = &info->oti_obj_dentry;
1364 obj_dentry->d_inode = obj->oo_inode;
1365 obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
1366 obj_dentry->d_name.hash = 0;
1368 child_dentry->d_name.hash = 0;
1369 child_dentry->d_parent = obj_dentry;
1370 child_dentry->d_name.name = name;
1371 child_dentry->d_name.len = namelen;
1372 return child_dentry;
1376 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
1378 struct dt_allocation_hint *hint,
1382 struct osd_device *osd = osd_obj2dev(obj);
1383 struct osd_thandle *oth;
1384 struct dt_object *parent;
1385 struct inode *inode;
1386 #ifdef HAVE_QUOTA_SUPPORT
1387 struct osd_ctxt *save = &info->oti_ctxt;
1390 LINVRNT(osd_invariant(obj));
1391 LASSERT(obj->oo_inode == NULL);
1393 oth = container_of(th, struct osd_thandle, ot_super);
1394 LASSERT(oth->ot_handle->h_transaction != NULL);
1396 if (hint && hint->dah_parent)
1397 parent = hint->dah_parent;
1399 parent = osd->od_obj_area;
1401 LASSERT(parent != NULL);
1402 LASSERT(osd_dt_obj(parent)->oo_inode->i_op != NULL);
1404 #ifdef HAVE_QUOTA_SUPPORT
1405 osd_push_ctxt(info->oti_env, save);
1407 inode = ldiskfs_create_inode(oth->ot_handle,
1408 osd_dt_obj(parent)->oo_inode, mode);
1409 #ifdef HAVE_QUOTA_SUPPORT
1412 if (!IS_ERR(inode)) {
1413 obj->oo_inode = inode;
1416 result = PTR_ERR(inode);
1417 LINVRNT(osd_invariant(obj));
1422 extern int iam_lvar_create(struct inode *obj, int keysize, int ptrsize,
1423 int recsize, handle_t *handle);
1425 extern int iam_lfix_create(struct inode *obj, int keysize, int ptrsize,
1426 int recsize, handle_t *handle);
1433 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
1434 struct lu_attr *attr,
1435 struct dt_allocation_hint *hint,
1436 struct dt_object_format *dof,
1440 struct osd_thandle *oth;
1441 struct osd_device *osd = osd_obj2dev(obj);
1442 __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1444 LASSERT(S_ISDIR(attr->la_mode));
1446 oth = container_of(th, struct osd_thandle, ot_super);
1447 LASSERT(oth->ot_handle->h_transaction != NULL);
1448 result = osd_mkfile(info, obj, mode, hint, th);
1449 if (result == 0 && osd->od_iop_mode == 0) {
1450 LASSERT(obj->oo_inode != NULL);
1452 * XXX uh-oh... call low-level iam function directly.
1455 result = iam_lvar_create(obj->oo_inode, OSD_NAME_LEN, 4,
1456 sizeof (struct lu_fid_pack),
1462 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
1463 struct lu_attr *attr,
1464 struct dt_allocation_hint *hint,
1465 struct dt_object_format *dof,
1469 struct osd_thandle *oth;
1470 const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
1472 __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1474 LASSERT(S_ISREG(attr->la_mode));
1476 oth = container_of(th, struct osd_thandle, ot_super);
1477 LASSERT(oth->ot_handle->h_transaction != NULL);
1479 result = osd_mkfile(info, obj, mode, hint, th);
1481 LASSERT(obj->oo_inode != NULL);
1482 if (feat->dif_flags & DT_IND_VARKEY)
1483 result = iam_lvar_create(obj->oo_inode,
1484 feat->dif_keysize_max,
1486 feat->dif_recsize_max,
1489 result = iam_lfix_create(obj->oo_inode,
1490 feat->dif_keysize_max,
1492 feat->dif_recsize_max,
1499 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
1500 struct lu_attr *attr,
1501 struct dt_allocation_hint *hint,
1502 struct dt_object_format *dof,
1505 LASSERT(S_ISREG(attr->la_mode));
1506 return osd_mkfile(info, obj, (attr->la_mode &
1507 (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th);
1510 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
1511 struct lu_attr *attr,
1512 struct dt_allocation_hint *hint,
1513 struct dt_object_format *dof,
1516 LASSERT(S_ISLNK(attr->la_mode));
1517 return osd_mkfile(info, obj, (attr->la_mode &
1518 (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th);
1521 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
1522 struct lu_attr *attr,
1523 struct dt_allocation_hint *hint,
1524 struct dt_object_format *dof,
1527 umode_t mode = attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX);
1530 LINVRNT(osd_invariant(obj));
1531 LASSERT(obj->oo_inode == NULL);
1532 LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
1533 S_ISFIFO(mode) || S_ISSOCK(mode));
1535 result = osd_mkfile(info, obj, mode, hint, th);
1537 LASSERT(obj->oo_inode != NULL);
1538 init_special_inode(obj->oo_inode, mode, attr->la_rdev);
1540 LINVRNT(osd_invariant(obj));
1544 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
1546 struct dt_allocation_hint *hint,
1547 struct dt_object_format *dof,
1550 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1552 osd_obj_type_f result;
1568 result = osd_mk_index;
1579 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1580 struct dt_object *parent, umode_t child_mode)
1584 memset(ah, 0, sizeof(*ah));
1585 ah->dah_parent = parent;
1586 ah->dah_mode = child_mode;
1590 * Helper function for osd_object_create()
1592 * \retval 0, on success
1594 static int __osd_object_create(struct osd_thread_info *info,
1595 struct osd_object *obj, struct lu_attr *attr,
1596 struct dt_allocation_hint *hint,
1597 struct dt_object_format *dof,
1603 result = osd_create_pre(info, obj, attr, th);
1605 result = osd_create_type_f(dof->dof_type)(info, obj,
1606 attr, hint, dof, th);
1608 result = osd_create_post(info, obj, attr, th);
1614 * Helper function for osd_object_create()
1616 * \retval 0, on success
1618 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
1619 const struct lu_fid *fid, struct thandle *th)
1621 struct osd_thread_info *info = osd_oti_get(env);
1622 struct osd_inode_id *id = &info->oti_id;
1623 struct osd_device *osd = osd_obj2dev(obj);
1624 struct md_ucred *uc = md_ucred(env);
1626 LASSERT(obj->oo_inode != NULL);
1627 LASSERT(uc != NULL);
1629 id->oii_ino = obj->oo_inode->i_ino;
1630 id->oii_gen = obj->oo_inode->i_generation;
1632 return osd_oi_insert(info, &osd->od_oi, fid, id, th,
1633 uc->mu_cap & CFS_CAP_SYS_RESOURCE_MASK);
1636 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1637 struct lu_attr *attr,
1638 struct dt_allocation_hint *hint,
1639 struct dt_object_format *dof,
1642 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1643 struct osd_object *obj = osd_dt_obj(dt);
1644 struct osd_thread_info *info = osd_oti_get(env);
1649 LINVRNT(osd_invariant(obj));
1650 LASSERT(!dt_object_exists(dt));
1651 LASSERT(osd_write_locked(env, obj));
1652 LASSERT(th != NULL);
1654 result = __osd_object_create(info, obj, attr, hint, dof, th);
1656 result = __osd_oi_insert(env, obj, fid, th);
1658 LASSERT(ergo(result == 0, dt_object_exists(dt)));
1659 LASSERT(osd_invariant(obj));
1664 * Helper function for osd_xattr_set()
1666 static int __osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
1667 const struct lu_buf *buf, const char *name, int fl)
1669 struct osd_object *obj = osd_dt_obj(dt);
1670 struct inode *inode = obj->oo_inode;
1671 struct osd_thread_info *info = osd_oti_get(env);
1672 struct dentry *dentry = &info->oti_child_dentry;
1673 struct timespec *t = &info->oti_time;
1677 LASSERT(dt_object_exists(dt));
1678 LASSERT(inode->i_op != NULL && inode->i_op->setxattr != NULL);
1679 LASSERT(osd_write_locked(env, obj));
1681 if (fl & LU_XATTR_REPLACE)
1682 fs_flags |= XATTR_REPLACE;
1684 if (fl & LU_XATTR_CREATE)
1685 fs_flags |= XATTR_CREATE;
1687 dentry->d_inode = inode;
1688 *t = inode->i_ctime;
1689 rc = inode->i_op->setxattr(dentry, name, buf->lb_buf,
1690 buf->lb_len, fs_flags);
1691 if (likely(rc == 0)) {
1692 spin_lock(&obj->oo_guard);
1693 inode->i_ctime = *t;
1694 spin_unlock(&obj->oo_guard);
1695 mark_inode_dirty(inode);
1701 * Put the fid into lustre_mdt_attrs, and then place the structure
1702 * inode's ea. This fid should not be altered during the life time
1705 * \retval +ve, on success
1706 * \retval -ve, on error
1708 * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
1710 static int osd_ea_fid_set(const struct lu_env *env, struct dt_object *dt,
1711 const struct lu_fid *fid)
1713 struct osd_thread_info *info = osd_oti_get(env);
1714 struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
1716 fid_cpu_to_be(&mdt_attrs->lma_self_fid, fid);
1718 return __osd_xattr_set(env, dt,
1719 osd_buf_get(env, mdt_attrs, sizeof *mdt_attrs),
1720 XATTR_NAME_LMA, LU_XATTR_CREATE);
1725 * Helper function to form igif
1727 static inline void osd_igif_get(const struct lu_env *env, struct dentry *dentry,
1730 struct inode *inode = dentry->d_inode;
1731 lu_igif_build(fid, inode->i_ino, inode->i_generation);
1735 * Helper function to pack the fid
1737 static inline void osd_fid_pack(const struct lu_env *env, const struct lu_fid *fid,
1738 struct lu_fid_pack *pack)
1740 fid_pack(pack, fid, &osd_oti_get(env)->oti_fid);
1744 * Try to read the fid from inode ea into dt_rec, if return value
1745 * i.e. rc is +ve, then we got fid, otherwise we will have to form igif
1747 * \param rec, the data-structure into which fid/igif is read
1749 * \retval 0, on success
1751 static int osd_ea_fid_get(const struct lu_env *env, struct dentry *dentry,
1754 struct inode *inode = dentry->d_inode;
1755 struct osd_thread_info *info = osd_oti_get(env);
1756 struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
1757 struct lu_fid *fid = &info->oti_fid;
1760 LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
1762 rc = inode->i_op->getxattr(dentry, XATTR_NAME_LMA, (void *)mdt_attrs,
1766 fid_be_to_cpu(fid, &mdt_attrs->lma_self_fid);
1768 } else if (rc == -ENODATA) {
1769 osd_igif_get(env, dentry, fid);
1774 osd_fid_pack(env, fid, (struct lu_fid_pack*)rec);
1780 * OSD layer object create function for interoperability mode (b11826).
1781 * This is mostly similar to osd_object_create(). Only difference being, fid is
1782 * inserted into inode ea here.
1784 * \retval 0, on success
1785 * \retval -ve, on error
1787 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
1788 struct lu_attr *attr,
1789 struct dt_allocation_hint *hint,
1790 struct dt_object_format *dof,
1793 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1794 struct osd_object *obj = osd_dt_obj(dt);
1795 struct osd_thread_info *info = osd_oti_get(env);
1801 LASSERT(osd_invariant(obj));
1802 LASSERT(!dt_object_exists(dt));
1803 LASSERT(osd_write_locked(env, obj));
1804 LASSERT(th != NULL);
1806 result = __osd_object_create(info, obj, attr, hint, dof, th);
1808 if (hint && hint->dah_parent)
1809 is_root = osd_object_is_root(osd_dt_obj(hint->dah_parent));
1811 /* objects under osd root shld have igif fid, so dont add fid EA */
1812 if (result == 0 && is_root == 0)
1813 result = osd_ea_fid_set(env, dt, fid);
1816 result = __osd_oi_insert(env, obj, fid, th);
1818 LASSERT(ergo(result == 0, dt_object_exists(dt)));
1819 LINVRNT(osd_invariant(obj));
1824 * Concurrency: @dt is write locked.
1826 static void osd_object_ref_add(const struct lu_env *env,
1827 struct dt_object *dt,
1830 struct osd_object *obj = osd_dt_obj(dt);
1831 struct inode *inode = obj->oo_inode;
1833 LINVRNT(osd_invariant(obj));
1834 LASSERT(dt_object_exists(dt));
1835 LASSERT(osd_write_locked(env, obj));
1836 LASSERT(th != NULL);
1838 spin_lock(&obj->oo_guard);
1839 LASSERT(inode->i_nlink < LDISKFS_LINK_MAX);
1841 spin_unlock(&obj->oo_guard);
1842 mark_inode_dirty(inode);
1843 LINVRNT(osd_invariant(obj));
1847 * Concurrency: @dt is write locked.
1849 static void osd_object_ref_del(const struct lu_env *env,
1850 struct dt_object *dt,
1853 struct osd_object *obj = osd_dt_obj(dt);
1854 struct inode *inode = obj->oo_inode;
1856 LINVRNT(osd_invariant(obj));
1857 LASSERT(dt_object_exists(dt));
1858 LASSERT(osd_write_locked(env, obj));
1859 LASSERT(th != NULL);
1861 spin_lock(&obj->oo_guard);
1862 LASSERT(inode->i_nlink > 0);
1864 spin_unlock(&obj->oo_guard);
1865 mark_inode_dirty(inode);
1866 LINVRNT(osd_invariant(obj));
1870 * Concurrency: @dt is read locked.
1872 static int osd_xattr_get(const struct lu_env *env,
1873 struct dt_object *dt,
1876 struct lustre_capa *capa)
1878 struct osd_object *obj = osd_dt_obj(dt);
1879 struct inode *inode = obj->oo_inode;
1880 struct osd_thread_info *info = osd_oti_get(env);
1881 struct dentry *dentry = &info->oti_obj_dentry;
1883 LASSERT(dt_object_exists(dt));
1884 LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
1885 LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
1887 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1890 dentry->d_inode = inode;
1891 return inode->i_op->getxattr(dentry, name, buf->lb_buf, buf->lb_len);
1896 * Concurrency: @dt is write locked.
1898 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
1899 const struct lu_buf *buf, const char *name, int fl,
1900 struct thandle *handle, struct lustre_capa *capa)
1902 LASSERT(handle != NULL);
1904 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1907 return __osd_xattr_set(env, dt, buf, name, fl);
1911 * Concurrency: @dt is read locked.
1913 static int osd_xattr_list(const struct lu_env *env,
1914 struct dt_object *dt,
1916 struct lustre_capa *capa)
1918 struct osd_object *obj = osd_dt_obj(dt);
1919 struct inode *inode = obj->oo_inode;
1920 struct osd_thread_info *info = osd_oti_get(env);
1921 struct dentry *dentry = &info->oti_obj_dentry;
1923 LASSERT(dt_object_exists(dt));
1924 LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
1925 LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
1927 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1930 dentry->d_inode = inode;
1931 return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
1935 * Concurrency: @dt is write locked.
1937 static int osd_xattr_del(const struct lu_env *env,
1938 struct dt_object *dt,
1940 struct thandle *handle,
1941 struct lustre_capa *capa)
1943 struct osd_object *obj = osd_dt_obj(dt);
1944 struct inode *inode = obj->oo_inode;
1945 struct osd_thread_info *info = osd_oti_get(env);
1946 struct dentry *dentry = &info->oti_obj_dentry;
1947 struct timespec *t = &info->oti_time;
1950 LASSERT(dt_object_exists(dt));
1951 LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
1952 LASSERT(osd_write_locked(env, obj));
1953 LASSERT(handle != NULL);
1955 if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1958 dentry->d_inode = inode;
1959 *t = inode->i_ctime;
1960 rc = inode->i_op->removexattr(dentry, name);
1961 if (likely(rc == 0)) {
1962 /* ctime should not be updated with server-side time. */
1963 spin_lock(&obj->oo_guard);
1964 inode->i_ctime = *t;
1965 spin_unlock(&obj->oo_guard);
1966 mark_inode_dirty(inode);
1971 static struct obd_capa *osd_capa_get(const struct lu_env *env,
1972 struct dt_object *dt,
1973 struct lustre_capa *old,
1976 struct osd_thread_info *info = osd_oti_get(env);
1977 const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1978 struct osd_object *obj = osd_dt_obj(dt);
1979 struct osd_device *dev = osd_obj2dev(obj);
1980 struct lustre_capa_key *key = &info->oti_capa_key;
1981 struct lustre_capa *capa = &info->oti_capa;
1982 struct obd_capa *oc;
1983 struct md_capainfo *ci;
1987 if (!dev->od_fl_capa)
1988 RETURN(ERR_PTR(-ENOENT));
1990 LASSERT(dt_object_exists(dt));
1991 LINVRNT(osd_invariant(obj));
1993 /* renewal sanity check */
1994 if (old && osd_object_auth(env, dt, old, opc))
1995 RETURN(ERR_PTR(-EACCES));
1997 ci = md_capainfo(env);
1999 RETURN(ERR_PTR(-ENOENT));
2001 switch (ci->mc_auth) {
2005 capa->lc_uid = obj->oo_inode->i_uid;
2006 capa->lc_gid = obj->oo_inode->i_gid;
2007 capa->lc_flags = LC_ID_PLAIN;
2009 case LC_ID_CONVERT: {
2012 s[0] = obj->oo_inode->i_uid;
2013 get_random_bytes(&(s[1]), sizeof(__u32));
2014 s[2] = obj->oo_inode->i_gid;
2015 get_random_bytes(&(s[3]), sizeof(__u32));
2016 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
2018 RETURN(ERR_PTR(rc));
2020 capa->lc_uid = ((__u64)d[1] << 32) | d[0];
2021 capa->lc_gid = ((__u64)d[3] << 32) | d[2];
2022 capa->lc_flags = LC_ID_CONVERT;
2026 RETURN(ERR_PTR(-EINVAL));
2029 capa->lc_fid = *fid;
2031 capa->lc_flags |= dev->od_capa_alg << 24;
2032 capa->lc_timeout = dev->od_capa_timeout;
2033 capa->lc_expiry = 0;
2035 oc = capa_lookup(dev->od_capa_hash, capa, 1);
2037 LASSERT(!capa_is_expired(oc));
2041 spin_lock(&capa_lock);
2042 *key = dev->od_capa_keys[1];
2043 spin_unlock(&capa_lock);
2045 capa->lc_keyid = key->lk_keyid;
2046 capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
2048 rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
2050 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
2051 RETURN(ERR_PTR(rc));
2054 oc = capa_add(dev->od_capa_hash, capa);
2058 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt)
2061 struct osd_object *obj = osd_dt_obj(dt);
2062 struct inode *inode = obj->oo_inode;
2063 struct osd_thread_info *info = osd_oti_get(env);
2064 struct dentry *dentry = &info->oti_obj_dentry;
2065 struct file *file = &info->oti_file;
2068 dentry->d_inode = inode;
2069 file->f_dentry = dentry;
2070 file->f_mapping = inode->i_mapping;
2071 file->f_op = inode->i_fop;
2072 LOCK_INODE_MUTEX(inode);
2073 rc = file->f_op->fsync(file, dentry, 0);
2074 UNLOCK_INODE_MUTEX(inode);
2078 static const struct dt_object_operations osd_obj_ops = {
2079 .do_read_lock = osd_object_read_lock,
2080 .do_write_lock = osd_object_write_lock,
2081 .do_read_unlock = osd_object_read_unlock,
2082 .do_write_unlock = osd_object_write_unlock,
2083 .do_attr_get = osd_attr_get,
2084 .do_attr_set = osd_attr_set,
2085 .do_ah_init = osd_ah_init,
2086 .do_create = osd_object_create,
2087 .do_index_try = osd_index_try,
2088 .do_ref_add = osd_object_ref_add,
2089 .do_ref_del = osd_object_ref_del,
2090 .do_xattr_get = osd_xattr_get,
2091 .do_xattr_set = osd_xattr_set,
2092 .do_xattr_del = osd_xattr_del,
2093 .do_xattr_list = osd_xattr_list,
2094 .do_capa_get = osd_capa_get,
2095 .do_object_sync = osd_object_sync,
2099 * dt_object_operations for interoperability mode
2100 * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
2102 static const struct dt_object_operations osd_obj_ea_ops = {
2103 .do_read_lock = osd_object_read_lock,
2104 .do_write_lock = osd_object_write_lock,
2105 .do_read_unlock = osd_object_read_unlock,
2106 .do_write_unlock = osd_object_write_unlock,
2107 .do_attr_get = osd_attr_get,
2108 .do_attr_set = osd_attr_set,
2109 .do_ah_init = osd_ah_init,
2110 .do_create = osd_object_ea_create,
2111 .do_index_try = osd_index_try,
2112 .do_ref_add = osd_object_ref_add,
2113 .do_ref_del = osd_object_ref_del,
2114 .do_xattr_get = osd_xattr_get,
2115 .do_xattr_set = osd_xattr_set,
2116 .do_xattr_del = osd_xattr_del,
2117 .do_xattr_list = osd_xattr_list,
2118 .do_capa_get = osd_capa_get,
2119 .do_object_sync = osd_object_sync,
2127 * XXX: Another layering violation for now.
2129 * We don't want to use ->f_op->read methods, because generic file write
2131 * - serializes on ->i_sem, and
2133 * - does a lot of extra work like balance_dirty_pages(),
2135 * which doesn't work for globally shared files like /last-received.
2137 int fsfilt_ldiskfs_read(struct inode *inode, void *buf, int size, loff_t *offs);
2138 int fsfilt_ldiskfs_write_handle(struct inode *inode, void *buf, int bufsize,
2139 loff_t *offs, handle_t *handle);
2141 static ssize_t osd_read(const struct lu_env *env, struct dt_object *dt,
2142 struct lu_buf *buf, loff_t *pos,
2143 struct lustre_capa *capa)
2145 struct inode *inode = osd_dt_obj(dt)->oo_inode;
2147 if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
2150 return fsfilt_ldiskfs_read(inode, buf->lb_buf, buf->lb_len, pos);
2153 static ssize_t osd_write(const struct lu_env *env, struct dt_object *dt,
2154 const struct lu_buf *buf, loff_t *pos,
2155 struct thandle *handle, struct lustre_capa *capa,
2158 struct inode *inode = osd_dt_obj(dt)->oo_inode;
2159 struct osd_thandle *oh;
2161 #ifdef HAVE_QUOTA_SUPPORT
2162 cfs_cap_t save = current->cap_effective;
2165 LASSERT(handle != NULL);
2167 if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_WRITE))
2170 oh = container_of(handle, struct osd_thandle, ot_super);
2171 LASSERT(oh->ot_handle->h_transaction != NULL);
2172 #ifdef HAVE_QUOTA_SUPPORT
2174 current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK;
2176 current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK;
2178 result = fsfilt_ldiskfs_write_handle(inode, buf->lb_buf, buf->lb_len,
2179 pos, oh->ot_handle);
2180 #ifdef HAVE_QUOTA_SUPPORT
2181 current->cap_effective = save;
2184 result = buf->lb_len;
2188 static const struct dt_body_operations osd_body_ops = {
2189 .dbo_read = osd_read,
2190 .dbo_write = osd_write
2197 static int osd_object_is_root(const struct osd_object *obj)
2199 return osd_sb(osd_obj2dev(obj))->s_root->d_inode == obj->oo_inode;
2202 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
2203 const struct dt_index_features *feat)
2205 struct iam_descr *descr;
2206 struct dt_object *dt = &o->oo_dt;
2208 if (osd_object_is_root(o))
2209 return feat == &dt_directory_features;
2211 LASSERT(o->oo_dir != NULL);
2213 descr = o->oo_dir->od_container.ic_descr;
2214 if (feat == &dt_directory_features) {
2215 if (descr->id_rec_size == sizeof(struct lu_fid_pack))
2218 if (descr == &iam_htree_compat_param) {
2219 /* if it is a HTREE dir then there is good chance that,
2220 * we dealing with ext3 directory here with no FIDs. */
2222 if (descr->id_rec_size ==
2223 sizeof ((struct ldiskfs_dir_entry_2 *)NULL)->inode) {
2225 dt->do_index_ops = &osd_index_ea_ops;
2232 feat->dif_keysize_min <= descr->id_key_size &&
2233 descr->id_key_size <= feat->dif_keysize_max &&
2234 feat->dif_recsize_min <= descr->id_rec_size &&
2235 descr->id_rec_size <= feat->dif_recsize_max &&
2236 !(feat->dif_flags & (DT_IND_VARKEY |
2237 DT_IND_VARREC | DT_IND_NONUNQ)) &&
2238 ergo(feat->dif_flags & DT_IND_UPDATE,
2239 1 /* XXX check that object (and file system) is
2244 static int osd_iam_container_init(const struct lu_env *env,
2245 struct osd_object *obj,
2246 struct osd_directory *dir)
2249 struct iam_container *bag;
2251 bag = &dir->od_container;
2252 result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
2254 result = iam_container_setup(bag);
2256 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
2258 iam_container_fini(bag);
2264 * Concurrency: no external locking is necessary.
2266 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
2267 const struct dt_index_features *feat)
2271 struct osd_object *obj = osd_dt_obj(dt);
2272 struct osd_device *osd = osd_obj2dev(obj);
2274 LINVRNT(osd_invariant(obj));
2275 LASSERT(dt_object_exists(dt));
2277 if (osd_object_is_root(obj)) {
2278 dt->do_index_ops = &osd_index_ea_ops;
2280 } else if (feat == &dt_directory_features && osd->od_iop_mode) {
2281 dt->do_index_ops = &osd_index_ea_ops;
2282 if (S_ISDIR(obj->oo_inode->i_mode))
2287 } else if (!osd_has_index(obj)) {
2288 struct osd_directory *dir;
2292 sema_init(&dir->od_sem, 1);
2294 spin_lock(&obj->oo_guard);
2295 if (obj->oo_dir == NULL)
2299 * Concurrent thread allocated container data.
2302 spin_unlock(&obj->oo_guard);
2304 * Now, that we have container data, serialize its
2307 down(&obj->oo_dir->od_sem);
2309 * recheck under lock.
2311 if (!osd_has_index(obj))
2312 result = osd_iam_container_init(env, obj, dir);
2315 up(&obj->oo_dir->od_sem);
2321 if (result == 0 && ea_dir == 0) {
2322 if (!osd_iam_index_probe(env, obj, feat))
2325 LINVRNT(osd_invariant(obj));
2331 * delete a (key, value) pair from index \a dt specified by \a key
2333 * \param dt_object osd index object
2334 * \param key key for index
2335 * \param rec record reference
2336 * \param handle transaction handler
2339 * \retval -ve failure
2342 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
2343 const struct dt_key *key, struct thandle *handle,
2344 struct lustre_capa *capa)
2346 struct osd_object *obj = osd_dt_obj(dt);
2347 struct osd_thandle *oh;
2348 struct iam_path_descr *ipd;
2349 struct iam_container *bag = &obj->oo_dir->od_container;
2354 LINVRNT(osd_invariant(obj));
2355 LASSERT(dt_object_exists(dt));
2356 LASSERT(bag->ic_object == obj->oo_inode);
2357 LASSERT(handle != NULL);
2359 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2362 ipd = osd_idx_ipd_get(env, bag);
2363 if (unlikely(ipd == NULL))
2366 oh = container_of0(handle, struct osd_thandle, ot_super);
2367 LASSERT(oh->ot_handle != NULL);
2368 LASSERT(oh->ot_handle->h_transaction != NULL);
2370 rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
2371 osd_ipd_put(env, bag, ipd);
2372 LINVRNT(osd_invariant(obj));
2377 * Index delete function for interoperability mode (b11826).
2378 * It will remove the directory entry added by osd_index_ea_insert().
2379 * This entry is needed to maintain name->fid mapping.
2381 * \param key, key i.e. file entry to be deleted
2383 * \retval 0, on success
2384 * \retval -ve, on error
2386 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
2387 const struct dt_key *key, struct thandle *handle,
2388 struct lustre_capa *capa)
2390 struct osd_object *obj = osd_dt_obj(dt);
2391 struct inode *dir = obj->oo_inode;
2392 struct dentry *dentry;
2393 struct osd_thandle *oh;
2394 struct ldiskfs_dir_entry_2 *de;
2395 struct buffer_head *bh;
2401 LINVRNT(osd_invariant(obj));
2402 LASSERT(dt_object_exists(dt));
2403 LASSERT(handle != NULL);
2405 oh = container_of(handle, struct osd_thandle, ot_super);
2406 LASSERT(oh->ot_handle != NULL);
2407 LASSERT(oh->ot_handle->h_transaction != NULL);
2409 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2412 dentry = osd_child_dentry_get(env, obj,
2413 (char *)key, strlen((char *)key));
2414 bh = ldiskfs_find_entry(dentry, &de);
2416 rc = ldiskfs_delete_entry(oh->ot_handle,
2419 mark_inode_dirty(dir);
2424 LASSERT(osd_invariant(obj));
2429 * Lookup index for \a key and copy record to \a rec.
2431 * \param dt_object osd index object
2432 * \param key key for index
2433 * \param rec record reference
2435 * \retval +ve success : exact mach
2436 * \retval 0 return record with key not greater than \a key
2437 * \retval -ve failure
2439 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
2440 struct dt_rec *rec, const struct dt_key *key,
2441 struct lustre_capa *capa)
2443 struct osd_object *obj = osd_dt_obj(dt);
2444 struct iam_path_descr *ipd;
2445 struct iam_container *bag = &obj->oo_dir->od_container;
2446 struct osd_thread_info *oti = osd_oti_get(env);
2447 struct iam_iterator *it = &oti->oti_idx_it;
2451 LASSERT(osd_invariant(obj));
2452 LASSERT(dt_object_exists(dt));
2453 LASSERT(bag->ic_object == obj->oo_inode);
2455 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
2458 ipd = osd_idx_ipd_get(env, bag);
2462 /* got ipd now we can start iterator. */
2463 iam_it_init(it, bag, 0, ipd);
2465 rc = iam_it_get(it, (struct iam_key *)key);
2467 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)rec);
2471 osd_ipd_put(env, bag, ipd);
2473 LINVRNT(osd_invariant(obj));
2479 * Inserts (key, value) pair in \a dt index object.
2481 * \param dt osd index object
2482 * \param key key for index
2483 * \param rec record reference
2484 * \param th transaction handler
2487 * \retval -ve failure
2489 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
2490 const struct dt_rec *rec, const struct dt_key *key,
2491 struct thandle *th, struct lustre_capa *capa,
2494 struct osd_object *obj = osd_dt_obj(dt);
2495 struct iam_path_descr *ipd;
2496 struct osd_thandle *oh;
2497 struct iam_container *bag = &obj->oo_dir->od_container;
2498 #ifdef HAVE_QUOTA_SUPPORT
2499 cfs_cap_t save = current->cap_effective;
2505 LINVRNT(osd_invariant(obj));
2506 LASSERT(dt_object_exists(dt));
2507 LASSERT(bag->ic_object == obj->oo_inode);
2508 LASSERT(th != NULL);
2510 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
2513 ipd = osd_idx_ipd_get(env, bag);
2514 if (unlikely(ipd == NULL))
2517 oh = container_of0(th, struct osd_thandle, ot_super);
2518 LASSERT(oh->ot_handle != NULL);
2519 LASSERT(oh->ot_handle->h_transaction != NULL);
2520 #ifdef HAVE_QUOTA_SUPPORT
2522 current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK;
2524 current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK;
2526 rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
2527 (struct iam_rec *)rec, ipd);
2528 #ifdef HAVE_QUOTA_SUPPORT
2529 current->cap_effective = save;
2531 osd_ipd_put(env, bag, ipd);
2532 LINVRNT(osd_invariant(obj));
2537 * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
2538 * into the directory.Also sets flags into osd object to
2539 * indicate dot and dotdot are created. This is required for
2540 * interoperability mode (b11826)
2542 * \param dir directory for dot and dotdot fixup.
2543 * \param obj child object for linking
2545 * \retval 0, on success
2546 * \retval -ve, on error
2548 static int osd_add_dot_dotdot(struct osd_thread_info *info,
2549 struct osd_object *dir,
2550 struct osd_object *obj, const char *name,
2553 struct inode *parent_dir = obj->oo_inode;
2554 struct inode *inode = dir->oo_inode;
2555 struct osd_thandle *oth;
2558 oth = container_of(th, struct osd_thandle, ot_super);
2559 LASSERT(oth->ot_handle->h_transaction != NULL);
2560 LASSERT(S_ISDIR(dir->oo_inode->i_mode));
2562 if (strcmp(name, dot) == 0) {
2563 if (dir->oo_compat_dot_created) {
2566 LASSERT(obj == dir);
2567 dir->oo_compat_dot_created = 1;
2570 } else if(strcmp(name, dotdot) == 0) {
2571 if (!dir->oo_compat_dot_created)
2573 if (dir->oo_compat_dotdot_created)
2574 return __osd_ea_add_rec(info, dir, obj, name, th);
2576 result = ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir, inode);
2578 dir->oo_compat_dotdot_created = 1;
2585 * Calls ldiskfs_add_entry() to add directory entry
2586 * into the directory. This is required for
2587 * interoperability mode (b11826)
2589 * \retval 0, on success
2590 * \retval -ve, on error
2592 static int __osd_ea_add_rec(struct osd_thread_info *info,
2593 struct osd_object *pobj,
2594 struct osd_object *cobj,
2598 struct dentry *child;
2599 struct osd_thandle *oth;
2600 struct inode *cinode = cobj->oo_inode;
2603 oth = container_of(th, struct osd_thandle, ot_super);
2604 LASSERT(oth->ot_handle != NULL);
2605 LASSERT(oth->ot_handle->h_transaction != NULL);
2607 child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
2608 rc = ldiskfs_add_entry(oth->ot_handle, child, cinode);
2614 * It will call the appropriate osd_add* function and return the
2615 * value, return by respective functions.
2617 static int osd_ea_add_rec(const struct lu_env *env,
2618 struct osd_object *pobj,
2619 struct osd_object *cobj,
2623 struct osd_thread_info *info = osd_oti_get(env);
2626 if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
2628 rc = osd_add_dot_dotdot(info, pobj, cobj, name, th);
2630 rc = __osd_ea_add_rec(info, pobj, cobj, name, th);
2636 * Calls ->lookup() to find dentry. From dentry get inode and
2637 * read inode's ea to get fid. This is required for interoperability
2640 * \retval 0, on success
2641 * \retval -ve, on error
2643 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
2644 struct dt_rec *rec, const struct dt_key *key)
2646 struct inode *dir = obj->oo_inode;
2647 struct osd_thread_info *info = osd_oti_get(env);
2648 struct dentry *dentry;
2649 struct osd_device *dev = osd_dev(obj->oo_dt.do_lu.lo_dev);
2650 struct osd_inode_id *id = &info->oti_id;
2651 struct ldiskfs_dir_entry_2 *de;
2652 struct buffer_head *bh;
2653 struct inode *inode;
2657 LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
2659 dentry = osd_child_dentry_get(env, obj,
2660 (char *)key, strlen((char *)key));
2661 bh = ldiskfs_find_entry(dentry, &de);
2663 ino = le32_to_cpu(de->inode);
2666 id->oii_gen = OSD_OII_NOGEN;
2668 inode = osd_iget(info, dev, id);
2669 if (!IS_ERR(inode)) {
2670 dentry->d_inode = inode;
2672 rc = osd_ea_fid_get(env, dentry, rec);
2683 * Find the osd object for given fid.
2685 * \param fid, need to find the osd object having this fid
2687 * \retval osd_object, on success
2688 * \retval -ve, on error
2690 struct osd_object *osd_object_find(const struct lu_env *env,
2691 struct dt_object *dt,
2692 const struct lu_fid *fid)
2694 struct lu_device *ludev = dt->do_lu.lo_dev;
2695 struct osd_object *child = NULL;
2696 struct lu_object *luch;
2697 struct lu_object *lo;
2699 luch = lu_object_find(env, ludev, fid, NULL);
2700 if (!IS_ERR(luch)) {
2701 if (lu_object_exists(luch)) {
2702 lo = lu_object_locate(luch->lo_header, ludev->ld_type);
2704 child = osd_obj(lo);
2706 LU_OBJECT_DEBUG(D_ERROR, env, luch,
2707 "lu_object can't be located"
2708 ""DFID"\n", PFID(fid));
2710 if (child == NULL) {
2711 lu_object_put(env, luch);
2712 CERROR("Unable to get osd_object\n");
2713 child = ERR_PTR(-ENOENT);
2716 LU_OBJECT_DEBUG(D_ERROR, env, luch,
2717 "lu_object does not exists "DFID"\n",
2719 child = ERR_PTR(-ENOENT);
2722 child = (void *)luch;
2728 * Put the osd object once done with it.
2730 * \param obj, osd object that needs to be put
2732 static inline void osd_object_put(const struct lu_env *env,
2733 struct osd_object *obj)
2735 lu_object_put(env, &obj->oo_dt.do_lu);
2739 * Index add function for interoperability mode (b11826).
2740 * It will add the directory entry.This entry is needed to
2741 * maintain name->fid mapping.
2743 * \param key, it is key i.e. file entry to be inserted
2744 * \param rec, it is value of given key i.e. fid
2746 * \retval 0, on success
2747 * \retval -ve, on error
2749 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
2750 const struct dt_rec *rec,
2751 const struct dt_key *key, struct thandle *th,
2752 struct lustre_capa *capa, int ignore_quota)
2754 struct osd_object *obj = osd_dt_obj(dt);
2755 struct lu_fid *fid = &osd_oti_get(env)->oti_fid;
2756 const struct lu_fid_pack *pack = (const struct lu_fid_pack *)rec;
2757 const char *name = (const char *)key;
2758 struct osd_object *child;
2759 #ifdef HAVE_QUOTA_SUPPORT
2760 cfs_cap_t save = current->cap_effective;
2766 LASSERT(osd_invariant(obj));
2767 LASSERT(dt_object_exists(dt));
2768 LASSERT(th != NULL);
2770 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
2773 rc = fid_unpack(pack, fid);
2776 child = osd_object_find(env, dt, fid);
2777 if (!IS_ERR(child)) {
2778 #ifdef HAVE_QUOTA_SUPPORT
2780 current->cap_effective |= CFS_CAP_SYS_RESOURCE_MASK;
2782 current->cap_effective &= ~CFS_CAP_SYS_RESOURCE_MASK;
2784 rc = osd_ea_add_rec(env, obj, child, name, th);
2786 #ifdef HAVE_QUOTA_SUPPORT
2787 current->cap_effective = save;
2789 osd_object_put(env, child);
2791 rc = PTR_ERR(child);
2794 LASSERT(osd_invariant(obj));
2799 * Initialize osd Iterator for given osd index object.
2801 * \param dt osd index object
2804 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
2805 struct dt_object *dt,
2806 struct lustre_capa *capa)
2808 struct osd_it_iam *it;
2809 struct osd_thread_info *oti = osd_oti_get(env);
2810 struct osd_object *obj = osd_dt_obj(dt);
2811 struct lu_object *lo = &dt->do_lu;
2812 struct iam_path_descr *ipd;
2813 struct iam_container *bag = &obj->oo_dir->od_container;
2815 LASSERT(lu_object_exists(lo));
2817 if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
2818 return ERR_PTR(-EACCES);
2821 ipd = osd_it_ipd_get(env, bag);
2822 if (likely(ipd != NULL)) {
2826 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
2827 return (struct dt_it *)it;
2829 return ERR_PTR(-ENOMEM);
2833 * free given Iterator.
2836 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
2838 struct osd_it_iam *it = (struct osd_it_iam *)di;
2839 struct osd_object *obj = it->oi_obj;
2841 iam_it_fini(&it->oi_it);
2842 osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
2843 lu_object_put(env, &obj->oo_dt.do_lu);
2847 * Move Iterator to record specified by \a key
2849 * \param di osd iterator
2850 * \param key key for index
2852 * \retval +ve di points to record with least key not larger than key
2853 * \retval 0 di points to exact matched key
2854 * \retval -ve failure
2857 static int osd_it_iam_get(const struct lu_env *env,
2858 struct dt_it *di, const struct dt_key *key)
2860 struct osd_it_iam *it = (struct osd_it_iam *)di;
2862 return iam_it_get(&it->oi_it, (const struct iam_key *)key);
2868 * \param di osd iterator
2871 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
2873 struct osd_it_iam *it = (struct osd_it_iam *)di;
2875 iam_it_put(&it->oi_it);
2879 * Move iterator by one record
2881 * \param di osd iterator
2883 * \retval +1 end of container reached
2885 * \retval -ve failure
2888 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
2890 struct osd_it_iam *it = (struct osd_it_iam *)di;
2892 return iam_it_next(&it->oi_it);
2896 * Return pointer to the key under iterator.
2899 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
2900 const struct dt_it *di)
2902 struct osd_it_iam *it = (struct osd_it_iam *)di;
2904 return (struct dt_key *)iam_it_key_get(&it->oi_it);
2908 * Return size of key under iterator (in bytes)
2911 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
2913 struct osd_it_iam *it = (struct osd_it_iam *)di;
2915 return iam_it_key_size(&it->oi_it);
2919 * Return pointer to the record under iterator.
2921 static struct dt_rec *osd_it_iam_rec(const struct lu_env *env,
2922 const struct dt_it *di)
2924 struct osd_it_iam *it = (struct osd_it_iam *)di;
2926 return (struct dt_rec *)iam_it_rec_get(&it->oi_it);
2930 * Returns cookie for current Iterator position.
2932 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
2934 struct osd_it_iam *it = (struct osd_it_iam *)di;
2936 return iam_it_store(&it->oi_it);
2940 * Restore iterator from cookie.
2942 * \param di osd iterator
2943 * \param hash Iterator location cookie
2945 * \retval +ve di points to record with least key not larger than key.
2946 * \retval 0 di points to exact matched key
2947 * \retval -ve failure
2950 static int osd_it_iam_load(const struct lu_env *env,
2951 const struct dt_it *di, __u64 hash)
2953 struct osd_it_iam *it = (struct osd_it_iam *)di;
2955 return iam_it_load(&it->oi_it, hash);
2958 static const struct dt_index_operations osd_index_iam_ops = {
2959 .dio_lookup = osd_index_iam_lookup,
2960 .dio_insert = osd_index_iam_insert,
2961 .dio_delete = osd_index_iam_delete,
2963 .init = osd_it_iam_init,
2964 .fini = osd_it_iam_fini,
2965 .get = osd_it_iam_get,
2966 .put = osd_it_iam_put,
2967 .next = osd_it_iam_next,
2968 .key = osd_it_iam_key,
2969 .key_size = osd_it_iam_key_size,
2970 .rec = osd_it_iam_rec,
2971 .store = osd_it_iam_store,
2972 .load = osd_it_iam_load
2977 * Creates or initializes iterator context.
2979 * \retval struct osd_it_ea, iterator structure on success
2982 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
2983 struct dt_object *dt,
2984 struct lustre_capa *capa)
2986 struct osd_object *obj = osd_dt_obj(dt);
2987 struct osd_thread_info *info = osd_oti_get(env);
2988 struct osd_it_ea *it = &info->oti_it_ea;
2989 struct lu_object *lo = &dt->do_lu;
2990 struct dentry *obj_dentry = &info->oti_it_dentry;
2992 LASSERT(lu_object_exists(lo));
2994 obj_dentry->d_inode = obj->oo_inode;
2995 obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
2996 obj_dentry->d_name.hash = 0;
2998 it->oie_namelen = 0;
2999 it->oie_curr_pos = 0;
3000 it->oie_next_pos = 0;
3002 it->oie_file.f_dentry = obj_dentry;
3003 it->oie_file.f_mapping = obj->oo_inode->i_mapping;
3004 it->oie_file.f_op = obj->oo_inode->i_fop;
3005 it->oie_file.private_data = NULL;
3008 RETURN((struct dt_it*) it);
3012 * Destroy or finishes iterator context.
3014 * \param di, struct osd_it_ea, iterator structure to be destroyed
3016 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
3018 struct osd_it_ea *it = (struct osd_it_ea *)di;
3019 struct osd_object *obj = it->oie_obj;
3023 lu_object_put(env, &obj->oo_dt.do_lu);
3028 * It position the iterator at given key, so that next lookup continues from
3029 * that key Or it is similar to dio_it->load() but based on a key,
3030 * rather than file position.
3032 * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
3035 * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
3037 static int osd_it_ea_get(const struct lu_env *env,
3038 struct dt_it *di, const struct dt_key *key)
3040 struct osd_it_ea *it = (struct osd_it_ea *)di;
3043 LASSERT(((const char *)key)[0] == '\0');
3044 it->oie_namelen = 0;
3045 it->oie_curr_pos = 0;
3046 it->oie_next_pos = 0;
3054 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
3059 * It is called internally by ->readdir(). It fills the
3060 * iterator's in-memory data structure with required
3061 * information i.e. name, namelen, rec_size etc.
3063 * \param buf, in which information to be filled in.
3064 * \param name, name of the file in given dir
3066 * \retval 0, on success
3067 * \retval 1, on buffer full
3069 static int osd_ldiskfs_filldir(char *buf, const char *name, int namelen,
3070 loff_t offset, ino_t ino,
3071 unsigned int d_type)
3073 struct osd_it_ea *it = (struct osd_it_ea *)buf;
3074 struct dirent64 *dirent = &it->oie_dirent64;
3075 int reclen = LDISKFS_DIR_REC_LEN(namelen);
3079 if (it->oie_namelen)
3082 if (namelen == 0 || namelen > LDISKFS_NAME_LEN)
3085 strncpy(dirent->d_name, name, LDISKFS_NAME_LEN);
3086 dirent->d_name[namelen] = 0;
3087 dirent->d_ino = ino;
3088 dirent->d_off = offset;
3089 dirent->d_reclen = reclen;
3090 it->oie_namelen = namelen;
3091 it->oie_curr_pos = offset;
3097 * Calls ->readdir() to load a directory entry at a time
3098 * and stored it in iterator's in-memory data structure.
3100 * \param di, struct osd_it_ea, iterator's in memory structure
3102 * \retval 0, on success
3103 * \retval -ve, on error
3105 int osd_ldiskfs_it_fill(const struct dt_it *di)
3107 struct osd_it_ea *it = (struct osd_it_ea *)di;
3108 struct osd_object *obj = it->oie_obj;
3109 struct inode *inode = obj->oo_inode;
3113 it->oie_namelen = 0;
3114 it->oie_file.f_pos = it->oie_curr_pos;
3116 result = inode->i_fop->readdir(&it->oie_file, it,
3117 (filldir_t) osd_ldiskfs_filldir);
3119 it->oie_next_pos = it->oie_file.f_pos;
3121 if(!result && it->oie_namelen == 0)
3128 * It calls osd_ldiskfs_it_fill() which will use ->readdir()
3129 * to load a directory entry at a time and stored it in
3130 * iterator's in-memory data structure.
3132 * \param di, struct osd_it_ea, iterator's in memory structure
3134 * \retval +ve, iterator reached to end
3135 * \retval 0, iterator not reached to end
3136 * \retval -ve, on error
3138 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
3140 struct osd_it_ea *it = (struct osd_it_ea *)di;
3144 it->oie_curr_pos = it->oie_next_pos;
3146 if (it->oie_curr_pos == LDISKFS_HTREE_EOF)
3149 rc = osd_ldiskfs_it_fill(di);
3155 * Returns the key at current position from iterator's in memory structure.
3157 * \param di, struct osd_it_ea, iterator's in memory structure
3159 * \retval key i.e. struct dt_key on success
3161 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
3162 const struct dt_it *di)
3164 struct osd_it_ea *it = (struct osd_it_ea *)di;
3166 RETURN((struct dt_key *)it->oie_dirent64.d_name);
3170 * Returns the key's size at current position from iterator's in memory structure.
3172 * \param di, struct osd_it_ea, iterator's in memory structure
3174 * \retval key_size i.e. struct dt_key on success
3176 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
3178 struct osd_it_ea *it = (struct osd_it_ea *)di;
3180 RETURN(it->oie_namelen);
3184 * Returns the value (i.e. fid/igif) at current position from iterator's
3185 * in memory structure.
3187 * \param di, struct osd_it_ea, iterator's in memory structure
3189 * \retval value i.e. struct dt_rec on success
3191 static struct dt_rec *osd_it_ea_rec(const struct lu_env *env,
3192 const struct dt_it *di)
3194 struct osd_it_ea *it = (struct osd_it_ea *)di;
3195 struct osd_object *obj = it->oie_obj;
3196 struct osd_thread_info *info = osd_oti_get(env);
3197 struct osd_inode_id *id = &info->oti_id;
3198 struct lu_fid_pack *rec = &info->oti_pack;
3199 struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev;
3200 struct dentry *dentry = &info->oti_child_dentry;
3201 struct osd_device *dev;
3202 struct inode *inode;
3206 dev = osd_dev(ldev);
3207 id->oii_ino = it->oie_dirent64.d_ino;
3208 id->oii_gen = OSD_OII_NOGEN;
3209 inode = osd_iget(info, dev, id);
3210 if (!IS_ERR(inode)) {
3211 dentry->d_inode = inode;
3212 LASSERT(dentry->d_inode->i_sb == osd_sb(dev));
3214 CERROR("Error getting inode for ino =%d", id->oii_ino);
3215 RETURN((struct dt_rec *) PTR_ERR(inode));
3218 rc = osd_ea_fid_get(env, dentry, (struct dt_rec*) rec);
3221 RETURN((struct dt_rec *)rec);
3226 * Returns a cookie for current position of the iterator head, so that
3227 * user can use this cookie to load/start the iterator next time.
3229 * \param di, struct osd_it_ea, iterator's in memory structure
3231 * \retval cookie for current position, on success
3233 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
3235 struct osd_it_ea *it = (struct osd_it_ea *)di;
3237 RETURN(it->oie_curr_pos);
3241 * It calls osd_ldiskfs_it_fill() which will use ->readdir()
3242 * to load a directory entry at a time and stored it i inn,
3243 * in iterator's in-memory data structure.
3245 * \param di, struct osd_it_ea, iterator's in memory structure
3247 * \retval +ve, on success
3248 * \retval -ve, on error
3250 static int osd_it_ea_load(const struct lu_env *env,
3251 const struct dt_it *di, __u64 hash)
3253 struct osd_it_ea *it = (struct osd_it_ea *)di;
3257 it->oie_curr_pos = it->oie_next_pos = hash;
3259 rc = osd_ldiskfs_it_fill(di);
3266 * Index and Iterator operations for interoperability
3267 * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
3269 static const struct dt_index_operations osd_index_ea_ops = {
3270 .dio_lookup = osd_index_ea_lookup,
3271 .dio_insert = osd_index_ea_insert,
3272 .dio_delete = osd_index_ea_delete,
3274 .init = osd_it_ea_init,
3275 .fini = osd_it_ea_fini,
3276 .get = osd_it_ea_get,
3277 .put = osd_it_ea_put,
3278 .next = osd_it_ea_next,
3279 .key = osd_it_ea_key,
3280 .key_size = osd_it_ea_key_size,
3281 .rec = osd_it_ea_rec,
3282 .store = osd_it_ea_store,
3283 .load = osd_it_ea_load
3288 * Index lookup function for interoperability mode (b11826).
3290 * \param key, key i.e. file name to be searched
3292 * \retval +ve, on success
3293 * \retval -ve, on error
3295 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
3296 struct dt_rec *rec, const struct dt_key *key,
3297 struct lustre_capa *capa)
3299 struct osd_object *obj = osd_dt_obj(dt);
3304 LASSERT(S_ISDIR(obj->oo_inode->i_mode));
3305 LINVRNT(osd_invariant(obj));
3307 if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3310 rc = osd_ea_lookup_rec(env, obj, rec, key);
3317 /* type constructor/destructor: osd_type_init, osd_type_fini */
3318 LU_TYPE_INIT_FINI(osd, &osd_key);
3320 static struct lu_context_key osd_key = {
3321 .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD,
3322 .lct_init = osd_key_init,
3323 .lct_fini = osd_key_fini,
3324 .lct_exit = osd_key_exit
3327 static void *osd_key_init(const struct lu_context *ctx,
3328 struct lu_context_key *key)
3330 struct osd_thread_info *info;
3332 OBD_ALLOC_PTR(info);
3334 info->oti_env = container_of(ctx, struct lu_env, le_ctx);
3336 info = ERR_PTR(-ENOMEM);
3340 /* context key destructor: osd_key_fini */
3341 LU_KEY_FINI(osd, struct osd_thread_info);
3343 static void osd_key_exit(const struct lu_context *ctx,
3344 struct lu_context_key *key, void *data)
3346 struct osd_thread_info *info = data;
3348 LASSERT(info->oti_r_locks == 0);
3349 LASSERT(info->oti_w_locks == 0);
3350 LASSERT(info->oti_txns == 0);
3353 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
3354 const char *name, struct lu_device *next)
3357 struct lu_context *ctx;
3359 /* context for commit hooks */
3360 ctx = &osd_dev(d)->od_env_for_commit.le_ctx;
3361 rc = lu_context_init(ctx, LCT_MD_THREAD|LCT_REMEMBER|LCT_NOREF);
3363 rc = osd_procfs_init(osd_dev(d), name);
3364 ctx->lc_cookie = 0x3;
3369 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
3371 struct osd_thread_info *info = osd_oti_get(env);
3373 if (o->od_obj_area != NULL) {
3374 lu_object_put(env, &o->od_obj_area->do_lu);
3375 o->od_obj_area = NULL;
3377 osd_oi_fini(info, &o->od_oi);
3382 static int osd_mount(const struct lu_env *env,
3383 struct osd_device *o, struct lustre_cfg *cfg)
3385 struct lustre_mount_info *lmi;
3386 const char *dev = lustre_cfg_string(cfg, 0);
3387 struct lustre_disk_data *ldd;
3388 struct lustre_sb_info *lsi;
3392 if (o->od_mount != NULL) {
3393 CERROR("Already mounted (%s)\n", dev);
3398 lmi = server_get_mount(dev);
3400 CERROR("Cannot get mount info for %s!\n", dev);
3404 LASSERT(lmi != NULL);
3405 /* save lustre_mount_info in dt_device */
3408 lsi = s2lsi(lmi->lmi_sb);
3411 if (ldd->ldd_flags & LDD_F_IAM_DIR) {
3413 LCONSOLE_WARN("OSD: IAM mode enabled\n");
3417 o->od_obj_area = NULL;
3421 static struct lu_device *osd_device_fini(const struct lu_env *env,
3422 struct lu_device *d)
3427 shrink_dcache_sb(osd_sb(osd_dev(d)));
3428 osd_sync(env, lu2dt_dev(d));
3430 rc = osd_procfs_fini(osd_dev(d));
3432 CERROR("proc fini error %d \n", rc);
3433 RETURN (ERR_PTR(rc));
3436 if (osd_dev(d)->od_mount)
3437 server_put_mount(osd_dev(d)->od_mount->lmi_name,
3438 osd_dev(d)->od_mount->lmi_mnt);
3439 osd_dev(d)->od_mount = NULL;
3441 lu_context_fini(&osd_dev(d)->od_env_for_commit.le_ctx);
3445 static struct lu_device *osd_device_alloc(const struct lu_env *env,
3446 struct lu_device_type *t,
3447 struct lustre_cfg *cfg)
3449 struct lu_device *l;
3450 struct osd_device *o;
3456 result = dt_device_init(&o->od_dt_dev, t);
3459 l->ld_ops = &osd_lu_ops;
3460 o->od_dt_dev.dd_ops = &osd_dt_ops;
3461 spin_lock_init(&o->od_osfs_lock);
3462 o->od_osfs_age = cfs_time_shift_64(-1000);
3463 o->od_capa_hash = init_capa_hash();
3464 if (o->od_capa_hash == NULL) {
3465 dt_device_fini(&o->od_dt_dev);
3466 l = ERR_PTR(-ENOMEM);
3469 l = ERR_PTR(result);
3474 l = ERR_PTR(-ENOMEM);
3478 static struct lu_device *osd_device_free(const struct lu_env *env,
3479 struct lu_device *d)
3481 struct osd_device *o = osd_dev(d);
3484 cleanup_capa_hash(o->od_capa_hash);
3485 dt_device_fini(&o->od_dt_dev);
3490 static int osd_process_config(const struct lu_env *env,
3491 struct lu_device *d, struct lustre_cfg *cfg)
3493 struct osd_device *o = osd_dev(d);
3497 switch(cfg->lcfg_command) {
3499 err = osd_mount(env, o, cfg);
3502 err = osd_shutdown(env, o);
3511 extern void ldiskfs_orphan_cleanup (struct super_block * sb,
3512 struct ldiskfs_super_block * es);
3514 static int osd_recovery_complete(const struct lu_env *env,
3515 struct lu_device *d)
3517 struct osd_device *o = osd_dev(d);
3519 /* TODO: orphans handling */
3520 ldiskfs_orphan_cleanup(osd_sb(o), LDISKFS_SB(osd_sb(o))->s_es);
3524 static int osd_prepare(const struct lu_env *env,
3525 struct lu_device *pdev,
3526 struct lu_device *dev)
3528 struct osd_device *osd = osd_dev(dev);
3529 struct lustre_sb_info *lsi;
3530 struct lustre_disk_data *ldd;
3531 struct lustre_mount_info *lmi;
3532 struct osd_thread_info *oti = osd_oti_get(env);
3533 struct dt_object *d;
3537 /* 1. initialize oi before any file create or file open */
3538 result = osd_oi_init(oti, &osd->od_oi,
3539 &osd->od_dt_dev, lu2md_dev(pdev));
3543 lmi = osd->od_mount;
3544 lsi = s2lsi(lmi->lmi_sb);
3547 /* 2. setup local objects */
3548 result = llo_local_objects_setup(env, lu2md_dev(pdev), lu2dt_dev(dev));
3552 /* 3. open remote object dir */
3553 d = dt_store_open(env, lu2dt_dev(dev), "",
3554 remote_obj_dir, &oti->oti_fid);
3556 osd->od_obj_area = d;
3559 result = PTR_ERR(d);
3560 osd->od_obj_area = NULL;
3567 static struct inode *osd_iget(struct osd_thread_info *info,
3568 struct osd_device *dev,
3569 const struct osd_inode_id *id)
3571 struct inode *inode;
3573 inode = iget(osd_sb(dev), id->oii_ino);
3574 if (inode == NULL) {
3575 CERROR("no inode\n");
3576 inode = ERR_PTR(-EACCES);
3577 } else if (is_bad_inode(inode)) {
3578 CERROR("bad inode\n");
3580 inode = ERR_PTR(-ENOENT);
3581 } else if (id->oii_gen != OSD_OII_NOGEN &&
3582 inode->i_generation != id->oii_gen) {
3583 CERROR("stale inode\n");
3585 inode = ERR_PTR(-ESTALE);
3592 static int osd_fid_lookup(const struct lu_env *env,
3593 struct osd_object *obj, const struct lu_fid *fid)
3595 struct osd_thread_info *info;
3596 struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev;
3597 struct osd_device *dev;
3598 struct osd_inode_id *id;
3600 struct inode *inode;
3603 LINVRNT(osd_invariant(obj));
3604 LASSERT(obj->oo_inode == NULL);
3605 LASSERT(fid_is_sane(fid));
3607 * This assertion checks that osd layer sees only local
3608 * fids. Unfortunately it is somewhat expensive (does a
3609 * cache-lookup). Disabling it for production/acceptance-testing.
3611 LASSERT(1 || fid_is_local(env, ldev->ld_site, fid));
3615 info = osd_oti_get(env);
3616 dev = osd_dev(ldev);
3620 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
3623 result = osd_oi_lookup(info, oi, fid, id);
3625 inode = osd_iget(info, dev, id);
3626 if (!IS_ERR(inode)) {
3627 obj->oo_inode = inode;
3628 LASSERT(obj->oo_inode->i_sb == osd_sb(dev));
3629 if (dev->od_iop_mode) {
3630 obj->oo_compat_dot_created = 1;
3631 obj->oo_compat_dotdot_created = 1;
3636 * If fid wasn't found in oi, inode-less object is
3637 * created, for which lu_object_exists() returns
3638 * false. This is used in a (frequent) case when
3639 * objects are created as locking anchors or
3640 * place holders for objects yet to be created.
3642 result = PTR_ERR(inode);
3643 } else if (result == -ENOENT)
3645 LINVRNT(osd_invariant(obj));
3650 static void osd_inode_getattr(const struct lu_env *env,
3651 struct inode *inode, struct lu_attr *attr)
3653 attr->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
3654 LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
3655 LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE;
3657 attr->la_atime = LTIME_S(inode->i_atime);
3658 attr->la_mtime = LTIME_S(inode->i_mtime);
3659 attr->la_ctime = LTIME_S(inode->i_ctime);
3660 attr->la_mode = inode->i_mode;
3661 attr->la_size = i_size_read(inode);
3662 attr->la_blocks = inode->i_blocks;
3663 attr->la_uid = inode->i_uid;
3664 attr->la_gid = inode->i_gid;
3665 attr->la_flags = LDISKFS_I(inode)->i_flags;
3666 attr->la_nlink = inode->i_nlink;
3667 attr->la_rdev = inode->i_rdev;
3668 attr->la_blksize = ll_inode_blksize(inode);
3669 attr->la_blkbits = inode->i_blkbits;
3676 static int lu_device_is_osd(const struct lu_device *d)
3678 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osd_lu_ops);
3681 static struct osd_object *osd_obj(const struct lu_object *o)
3683 LASSERT(lu_device_is_osd(o->lo_dev));
3684 return container_of0(o, struct osd_object, oo_dt.do_lu);
3687 static struct osd_device *osd_dt_dev(const struct dt_device *d)
3689 LASSERT(lu_device_is_osd(&d->dd_lu_dev));
3690 return container_of0(d, struct osd_device, od_dt_dev);
3693 static struct osd_device *osd_dev(const struct lu_device *d)
3695 LASSERT(lu_device_is_osd(d));
3696 return osd_dt_dev(container_of0(d, struct dt_device, dd_lu_dev));
3699 static struct osd_object *osd_dt_obj(const struct dt_object *d)
3701 return osd_obj(&d->do_lu);
3704 static struct osd_device *osd_obj2dev(const struct osd_object *o)
3706 return osd_dev(o->oo_dt.do_lu.lo_dev);
3709 static struct lu_device *osd2lu_dev(struct osd_device *osd)
3711 return &osd->od_dt_dev.dd_lu_dev;
3714 static struct super_block *osd_sb(const struct osd_device *dev)
3716 return dev->od_mount->lmi_mnt->mnt_sb;
3719 static journal_t *osd_journal(const struct osd_device *dev)
3721 return LDISKFS_SB(osd_sb(dev))->s_journal;
3724 static int osd_has_index(const struct osd_object *obj)
3726 return obj->oo_dt.do_index_ops != NULL;
3729 static int osd_object_invariant(const struct lu_object *l)
3731 return osd_invariant(osd_obj(l));
3734 static const struct lu_object_operations osd_lu_obj_ops = {
3735 .loo_object_init = osd_object_init,
3736 .loo_object_delete = osd_object_delete,
3737 .loo_object_release = osd_object_release,
3738 .loo_object_free = osd_object_free,
3739 .loo_object_print = osd_object_print,
3740 .loo_object_invariant = osd_object_invariant
3743 static const struct lu_device_operations osd_lu_ops = {
3744 .ldo_object_alloc = osd_object_alloc,
3745 .ldo_process_config = osd_process_config,
3746 .ldo_recovery_complete = osd_recovery_complete,
3747 .ldo_prepare = osd_prepare,
3750 static const struct lu_device_type_operations osd_device_type_ops = {
3751 .ldto_init = osd_type_init,
3752 .ldto_fini = osd_type_fini,
3754 .ldto_start = osd_type_start,
3755 .ldto_stop = osd_type_stop,
3757 .ldto_device_alloc = osd_device_alloc,
3758 .ldto_device_free = osd_device_free,
3760 .ldto_device_init = osd_device_init,
3761 .ldto_device_fini = osd_device_fini
3764 static struct lu_device_type osd_device_type = {
3765 .ldt_tags = LU_DEVICE_DT,
3766 .ldt_name = LUSTRE_OSD_NAME,
3767 .ldt_ops = &osd_device_type_ops,
3768 .ldt_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3772 * lprocfs legacy support.
3774 static struct obd_ops osd_obd_device_ops = {
3775 .o_owner = THIS_MODULE
3778 static struct lu_local_obj_desc llod_osd_rem_obj_dir = {
3779 .llod_name = remote_obj_dir,
3780 .llod_oid = OSD_REM_OBJ_DIR_OID,
3782 .llod_feat = &dt_directory_features,
3785 static int __init osd_mod_init(void)
3787 struct lprocfs_static_vars lvars;
3790 llo_local_obj_register(&llod_osd_rem_obj_dir);
3791 lprocfs_osd_init_vars(&lvars);
3792 return class_register_type(&osd_obd_device_ops, NULL, lvars.module_vars,
3793 LUSTRE_OSD_NAME, &osd_device_type);
3796 static void __exit osd_mod_exit(void)
3798 llo_local_obj_unregister(&llod_osd_rem_obj_dir);
3799 class_unregister_type(LUSTRE_OSD_NAME);
3802 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3803 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_NAME")");
3804 MODULE_LICENSE("GPL");
3806 cfs_module(osd, "0.0.2", osd_mod_init, osd_mod_exit);