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LU-911 osd: use struct obd_statfs instead of kstatfs_t
[fs/lustre-release.git] / lustre / osd-ldiskfs / osd_handler.c
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
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.
11  *
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).
17  *
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
21  *
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
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30  * Use is subject to license terms.
31  *
32  * Copyright (c) 2011, 2012, Whamcloud, Inc.
33  */
34 /*
35  * This file is part of Lustre, http://www.lustre.org/
36  * Lustre is a trademark of Sun Microsystems, Inc.
37  *
38  * lustre/osd/osd_handler.c
39  *
40  * Top-level entry points into osd module
41  *
42  * Author: Nikita Danilov <nikita@clusterfs.com>
43  *         Pravin Shelar <pravin.shelar@sun.com> : Added fid in dirent
44  */
45
46 #ifndef EXPORT_SYMTAB
47 # define EXPORT_SYMTAB
48 #endif
49 #define DEBUG_SUBSYSTEM S_MDS
50
51 #include <linux/module.h>
52
53 /* LUSTRE_VERSION_CODE */
54 #include <lustre_ver.h>
55 /* prerequisite for linux/xattr.h */
56 #include <linux/types.h>
57 /* prerequisite for linux/xattr.h */
58 #include <linux/fs.h>
59 /* XATTR_{REPLACE,CREATE} */
60 #include <linux/xattr.h>
61 /* simple_mkdir() */
62 #include <lvfs.h>
63
64 /*
65  * struct OBD_{ALLOC,FREE}*()
66  * OBD_FAIL_CHECK
67  */
68 #include <obd_support.h>
69 /* struct ptlrpc_thread */
70 #include <lustre_net.h>
71
72 /* fid_is_local() */
73 #include <lustre_fid.h>
74
75 #include "osd_internal.h"
76 #include "osd_igif.h"
77
78 /* llo_* api support */
79 #include <md_object.h>
80
81 #ifdef HAVE_LDISKFS_PDO
82 int ldiskfs_pdo = 1;
83 CFS_MODULE_PARM(ldiskfs_pdo, "i", int, 0644,
84                 "ldiskfs with parallel directory operations");
85 #else
86 int ldiskfs_pdo = 0;
87 #endif
88
89 static const char dot[] = ".";
90 static const char dotdot[] = "..";
91 static const char remote_obj_dir[] = "REM_OBJ_DIR";
92
93 static const struct lu_object_operations      osd_lu_obj_ops;
94 static const struct dt_object_operations      osd_obj_ops;
95 static const struct dt_object_operations      osd_obj_ea_ops;
96 static const struct dt_index_operations       osd_index_iam_ops;
97 static const struct dt_index_operations       osd_index_ea_ops;
98
99 static int osd_has_index(const struct osd_object *obj)
100 {
101         return obj->oo_dt.do_index_ops != NULL;
102 }
103
104 static int osd_object_invariant(const struct lu_object *l)
105 {
106         return osd_invariant(osd_obj(l));
107 }
108
109 #ifdef HAVE_QUOTA_SUPPORT
110 static inline void
111 osd_push_ctxt(const struct lu_env *env, struct osd_ctxt *save)
112 {
113         struct md_ucred *uc = md_ucred(env);
114         struct cred     *tc;
115
116         LASSERT(uc != NULL);
117
118         save->oc_uid = current_fsuid();
119         save->oc_gid = current_fsgid();
120         save->oc_cap = current_cap();
121         if ((tc = prepare_creds())) {
122                 tc->fsuid         = uc->mu_fsuid;
123                 tc->fsgid         = uc->mu_fsgid;
124                 commit_creds(tc);
125         }
126         /* XXX not suboptimal */
127         cfs_curproc_cap_unpack(uc->mu_cap);
128 }
129
130 static inline void
131 osd_pop_ctxt(struct osd_ctxt *save)
132 {
133         struct cred *tc;
134
135         if ((tc = prepare_creds())) {
136                 tc->fsuid         = save->oc_uid;
137                 tc->fsgid         = save->oc_gid;
138                 tc->cap_effective = save->oc_cap;
139                 commit_creds(tc);
140         }
141 }
142 #endif
143
144 /*
145  * Concurrency: doesn't matter
146  */
147 static int osd_read_locked(const struct lu_env *env, struct osd_object *o)
148 {
149         return osd_oti_get(env)->oti_r_locks > 0;
150 }
151
152 /*
153  * Concurrency: doesn't matter
154  */
155 static int osd_write_locked(const struct lu_env *env, struct osd_object *o)
156 {
157         struct osd_thread_info *oti = osd_oti_get(env);
158         return oti->oti_w_locks > 0 && o->oo_owner == env;
159 }
160
161 /*
162  * Concurrency: doesn't access mutable data
163  */
164 static int osd_root_get(const struct lu_env *env,
165                         struct dt_device *dev, struct lu_fid *f)
166 {
167         lu_local_obj_fid(f, OSD_FS_ROOT_OID);
168         return 0;
169 }
170
171 static inline int osd_qid_type(struct osd_thandle *oh, int i)
172 {
173         return (oh->ot_id_type & (1 << i)) ? GRPQUOTA : USRQUOTA;
174 }
175
176 static inline void osd_qid_set_type(struct osd_thandle *oh, int i, int type)
177 {
178         oh->ot_id_type |= ((type == GRPQUOTA) ? (1 << i) : 0);
179 }
180
181 void osd_declare_qid(struct dt_object *dt, struct osd_thandle *oh,
182                      int type, uid_t id, struct inode *inode)
183 {
184 #ifdef CONFIG_QUOTA
185         int i, allocated = 0;
186         struct osd_object *obj;
187
188         LASSERT(dt != NULL);
189         LASSERT(oh != NULL);
190         LASSERTF(oh->ot_id_cnt <= OSD_MAX_UGID_CNT, "count=%u",
191                  oh->ot_id_cnt);
192
193         /* id entry is allocated in the quota file */
194         if (inode && inode->i_dquot[type] && inode->i_dquot[type]->dq_off)
195                 allocated = 1;
196
197         for (i = 0; i < oh->ot_id_cnt; i++) {
198                 if (oh->ot_id_array[i] == id && osd_qid_type(oh, i) == type)
199                         return;
200         }
201
202         if (unlikely(i >= OSD_MAX_UGID_CNT)) {
203                 CERROR("more than %d uid/gids for a transaction?\n", i);
204                 return;
205         }
206
207         oh->ot_id_array[i] = id;
208         osd_qid_set_type(oh, i, type);
209         oh->ot_id_cnt++;
210         obj = osd_dt_obj(dt);
211         oh->ot_credits += (allocated || id == 0) ?
212                 1 : LDISKFS_QUOTA_INIT_BLOCKS(osd_sb(osd_obj2dev(obj)));
213 #endif
214 }
215
216 /*
217  * OSD object methods.
218  */
219
220 /*
221  * Concurrency: no concurrent access is possible that early in object
222  * life-cycle.
223  */
224 static struct lu_object *osd_object_alloc(const struct lu_env *env,
225                                           const struct lu_object_header *hdr,
226                                           struct lu_device *d)
227 {
228         struct osd_object *mo;
229
230         OBD_ALLOC_PTR(mo);
231         if (mo != NULL) {
232                 struct lu_object *l;
233
234                 l = &mo->oo_dt.do_lu;
235                 dt_object_init(&mo->oo_dt, NULL, d);
236                 if (osd_dev(d)->od_iop_mode)
237                         mo->oo_dt.do_ops = &osd_obj_ea_ops;
238                 else
239                         mo->oo_dt.do_ops = &osd_obj_ops;
240
241                 l->lo_ops = &osd_lu_obj_ops;
242                 cfs_init_rwsem(&mo->oo_sem);
243                 cfs_init_rwsem(&mo->oo_ext_idx_sem);
244                 cfs_spin_lock_init(&mo->oo_guard);
245                 return l;
246         } else {
247                 return NULL;
248         }
249 }
250
251 /*
252  * retrieve object from backend ext fs.
253  **/
254 struct inode *osd_iget(struct osd_thread_info *info,
255                        struct osd_device *dev,
256                        const struct osd_inode_id *id)
257 {
258         struct inode *inode = NULL;
259
260         inode = ldiskfs_iget(osd_sb(dev), id->oii_ino);
261         if (IS_ERR(inode)) {
262                 CERROR("Cannot get inode, rc = %li\n", PTR_ERR(inode));
263         } else if (id->oii_gen != OSD_OII_NOGEN &&
264                    inode->i_generation != id->oii_gen) {
265                 iput(inode);
266                 inode = ERR_PTR(-ESTALE);
267         } else if (inode->i_nlink == 0) {
268                 /* due to parallel readdir and unlink,
269                 * we can have dead inode here. */
270                 CWARN("stale inode\n");
271                 make_bad_inode(inode);
272                 iput(inode);
273                 inode = ERR_PTR(-ESTALE);
274         } else if (is_bad_inode(inode)) {
275                 CERROR("bad inode %lx\n",inode->i_ino);
276                 iput(inode);
277                 inode = ERR_PTR(-ENOENT);
278         } else {
279                 /* Do not update file c/mtime in ldiskfs.
280                  * NB: we don't have any lock to protect this because we don't
281                  * have reference on osd_object now, but contention with
282                  * another lookup + attr_set can't happen in the tiny window
283                  * between if (...) and set S_NOCMTIME. */
284                 if (!(inode->i_flags & S_NOCMTIME))
285                         inode->i_flags |= S_NOCMTIME;
286         }
287         return inode;
288 }
289
290 static int osd_fid_lookup(const struct lu_env *env,
291                           struct osd_object *obj, const struct lu_fid *fid)
292 {
293         struct osd_thread_info *info;
294         struct lu_device       *ldev = obj->oo_dt.do_lu.lo_dev;
295         struct osd_device      *dev;
296         struct osd_inode_id    *id;
297         struct inode           *inode;
298         int                     result;
299
300         LINVRNT(osd_invariant(obj));
301         LASSERT(obj->oo_inode == NULL);
302         LASSERTF(fid_is_sane(fid) || fid_is_idif(fid), DFID, PFID(fid));
303         /*
304          * This assertion checks that osd layer sees only local
305          * fids. Unfortunately it is somewhat expensive (does a
306          * cache-lookup). Disabling it for production/acceptance-testing.
307          */
308         LASSERT(1 || fid_is_local(env, ldev->ld_site, fid));
309
310         ENTRY;
311
312         info = osd_oti_get(env);
313         LASSERT(info);
314         dev  = osd_dev(ldev);
315         id   = &info->oti_id;
316
317         if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
318                 RETURN(-ENOENT);
319
320         result = osd_oi_lookup(info, dev, fid, id);
321         if (result != 0) {
322                 if (result == -ENOENT)
323                         result = 0;
324                 GOTO(out, result);
325         }
326
327         inode = osd_iget(info, dev, id);
328         if (IS_ERR(inode)) {
329                 /*
330                  * If fid wasn't found in oi, inode-less object is
331                  * created, for which lu_object_exists() returns
332                  * false. This is used in a (frequent) case when
333                  * objects are created as locking anchors or
334                  * place holders for objects yet to be created.
335                  */
336                 result = PTR_ERR(inode);
337                 GOTO(out, result);
338         }
339
340         obj->oo_inode = inode;
341         LASSERT(obj->oo_inode->i_sb == osd_sb(dev));
342         if (dev->od_iop_mode) {
343                 obj->oo_compat_dot_created = 1;
344                 obj->oo_compat_dotdot_created = 1;
345         }
346
347         if (!S_ISDIR(inode->i_mode) || !ldiskfs_pdo) /* done */
348                 goto out;
349
350         LASSERT(obj->oo_hl_head == NULL);
351         obj->oo_hl_head = ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
352         if (obj->oo_hl_head == NULL) {
353                 obj->oo_inode = NULL;
354                 iput(inode);
355                 result = -ENOMEM;
356         }
357 out:
358         LINVRNT(osd_invariant(obj));
359         RETURN(result);
360 }
361
362 /*
363  * Concurrency: shouldn't matter.
364  */
365 static void osd_object_init0(struct osd_object *obj)
366 {
367         LASSERT(obj->oo_inode != NULL);
368         obj->oo_dt.do_body_ops = &osd_body_ops;
369         obj->oo_dt.do_lu.lo_header->loh_attr |=
370                 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
371 }
372
373 /*
374  * Concurrency: no concurrent access is possible that early in object
375  * life-cycle.
376  */
377 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
378                            const struct lu_object_conf *unused)
379 {
380         struct osd_object *obj = osd_obj(l);
381         int result;
382
383         LINVRNT(osd_invariant(obj));
384
385         result = osd_fid_lookup(env, obj, lu_object_fid(l));
386         obj->oo_dt.do_body_ops = &osd_body_ops_new;
387         if (result == 0) {
388                 if (obj->oo_inode != NULL)
389                         osd_object_init0(obj);
390         }
391         LINVRNT(osd_invariant(obj));
392         return result;
393 }
394
395 /*
396  * Concurrency: no concurrent access is possible that late in object
397  * life-cycle.
398  */
399 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
400 {
401         struct osd_object *obj = osd_obj(l);
402
403         LINVRNT(osd_invariant(obj));
404
405         dt_object_fini(&obj->oo_dt);
406         if (obj->oo_hl_head != NULL)
407                 ldiskfs_htree_lock_head_free(obj->oo_hl_head);
408         OBD_FREE_PTR(obj);
409 }
410
411 /*
412  * Concurrency: no concurrent access is possible that late in object
413  * life-cycle.
414  */
415 static void osd_index_fini(struct osd_object *o)
416 {
417         struct iam_container *bag;
418
419         if (o->oo_dir != NULL) {
420                 bag = &o->oo_dir->od_container;
421                 if (o->oo_inode != NULL) {
422                         if (bag->ic_object == o->oo_inode)
423                                 iam_container_fini(bag);
424                 }
425                 OBD_FREE_PTR(o->oo_dir);
426                 o->oo_dir = NULL;
427         }
428 }
429
430 /*
431  * Concurrency: no concurrent access is possible that late in object
432  * life-cycle (for all existing callers, that is. New callers have to provide
433  * their own locking.)
434  */
435 static int osd_inode_unlinked(const struct inode *inode)
436 {
437         return inode->i_nlink == 0;
438 }
439
440 enum {
441         OSD_TXN_OI_DELETE_CREDITS    = 20,
442         OSD_TXN_INODE_DELETE_CREDITS = 20
443 };
444
445 /*
446  * Journal
447  */
448
449 #if OSD_THANDLE_STATS
450 /**
451  * Set time when the handle is allocated
452  */
453 static void osd_th_alloced(struct osd_thandle *oth)
454 {
455         oth->oth_alloced = cfs_time_current();
456 }
457
458 /**
459  * Set time when the handle started
460  */
461 static void osd_th_started(struct osd_thandle *oth)
462 {
463         oth->oth_started = cfs_time_current();
464 }
465
466 /**
467  * Helper function to convert time interval to microseconds packed in
468  * long int (default time units for the counter in "stats" initialized
469  * by lu_time_init() )
470  */
471 static long interval_to_usec(cfs_time_t start, cfs_time_t end)
472 {
473         struct timeval val;
474
475         cfs_duration_usec(cfs_time_sub(end, start), &val);
476         return val.tv_sec * 1000000 + val.tv_usec;
477 }
478
479 /**
480  * Check whether the we deal with this handle for too long.
481  */
482 static void __osd_th_check_slow(void *oth, struct osd_device *dev,
483                                 cfs_time_t alloced, cfs_time_t started,
484                                 cfs_time_t closed)
485 {
486         cfs_time_t now = cfs_time_current();
487
488         LASSERT(dev != NULL);
489
490         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_STARTING,
491                             interval_to_usec(alloced, started));
492         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_OPEN,
493                             interval_to_usec(started, closed));
494         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_CLOSING,
495                             interval_to_usec(closed, now));
496
497         if (cfs_time_before(cfs_time_add(alloced, cfs_time_seconds(30)), now)) {
498                 CWARN("transaction handle %p was open for too long: "
499                       "now "CFS_TIME_T" ,"
500                       "alloced "CFS_TIME_T" ,"
501                       "started "CFS_TIME_T" ,"
502                       "closed "CFS_TIME_T"\n",
503                       oth, now, alloced, started, closed);
504                 libcfs_debug_dumpstack(NULL);
505         }
506 }
507
508 #define OSD_CHECK_SLOW_TH(oth, dev, expr)                               \
509 {                                                                       \
510         cfs_time_t __closed = cfs_time_current();                       \
511         cfs_time_t __alloced = oth->oth_alloced;                        \
512         cfs_time_t __started = oth->oth_started;                        \
513                                                                         \
514         expr;                                                           \
515         __osd_th_check_slow(oth, dev, __alloced, __started, __closed);  \
516 }
517
518 #else /* OSD_THANDLE_STATS */
519
520 #define osd_th_alloced(h)                  do {} while(0)
521 #define osd_th_started(h)                  do {} while(0)
522 #define OSD_CHECK_SLOW_TH(oth, dev, expr)  expr
523
524 #endif /* OSD_THANDLE_STATS */
525
526 /*
527  * Concurrency: doesn't access mutable data.
528  */
529 static int osd_param_is_sane(const struct osd_device *dev,
530                              const struct thandle *th)
531 {
532         struct osd_thandle *oh;
533         oh = container_of0(th, struct osd_thandle, ot_super);
534         return oh->ot_credits <= osd_journal(dev)->j_max_transaction_buffers;
535 }
536
537 /*
538  * Concurrency: shouldn't matter.
539  */
540 #ifdef HAVE_LDISKFS_JOURNAL_CALLBACK_ADD
541 static void osd_trans_commit_cb(struct super_block *sb,
542                                 struct journal_callback *jcb, int error)
543 #else
544 static void osd_trans_commit_cb(struct journal_callback *jcb, int error)
545 #endif
546 {
547         struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb);
548         struct thandle     *th  = &oh->ot_super;
549         struct lu_device   *lud = &th->th_dev->dd_lu_dev;
550         struct dt_txn_commit_cb *dcb, *tmp;
551
552         LASSERT(oh->ot_handle == NULL);
553
554         if (error)
555                 CERROR("transaction @0x%p commit error: %d\n", th, error);
556
557         dt_txn_hook_commit(th);
558
559         /* call per-transaction callbacks if any */
560         cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage)
561                 dcb->dcb_func(NULL, th, dcb, error);
562
563         lu_ref_del_at(&lud->ld_reference, oh->ot_dev_link, "osd-tx", th);
564         lu_device_put(lud);
565         th->th_dev = NULL;
566
567         lu_context_exit(&th->th_ctx);
568         lu_context_fini(&th->th_ctx);
569         OBD_FREE_PTR(oh);
570 }
571
572 static struct thandle *osd_trans_create(const struct lu_env *env,
573                                         struct dt_device *d)
574 {
575         struct osd_thread_info *oti = osd_oti_get(env);
576         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
577         struct osd_thandle     *oh;
578         struct thandle         *th;
579         ENTRY;
580
581         /* on pending IO in this thread should left from prev. request */
582         LASSERT(cfs_atomic_read(&iobuf->dr_numreqs) == 0);
583
584         th = ERR_PTR(-ENOMEM);
585         OBD_ALLOC_GFP(oh, sizeof *oh, CFS_ALLOC_IO);
586         if (oh != NULL) {
587                 th = &oh->ot_super;
588                 th->th_dev = d;
589                 th->th_result = 0;
590                 th->th_tags = LCT_TX_HANDLE;
591                 oh->ot_credits = 0;
592                 oti->oti_dev = osd_dt_dev(d);
593                 CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
594                 osd_th_alloced(oh);
595         }
596         RETURN(th);
597 }
598
599 /*
600  * Concurrency: shouldn't matter.
601  */
602 int osd_trans_start(const struct lu_env *env, struct dt_device *d,
603                     struct thandle *th)
604 {
605         struct osd_thread_info *oti = osd_oti_get(env);
606         struct osd_device  *dev = osd_dt_dev(d);
607         handle_t           *jh;
608         struct osd_thandle *oh;
609         int rc;
610
611         ENTRY;
612
613         LASSERT(current->journal_info == NULL);
614
615         oh = container_of0(th, struct osd_thandle, ot_super);
616         LASSERT(oh != NULL);
617         LASSERT(oh->ot_handle == NULL);
618
619         rc = dt_txn_hook_start(env, d, th);
620         if (rc != 0)
621                 GOTO(out, rc);
622
623         if (!osd_param_is_sane(dev, th)) {
624                 CWARN("%s: too many transaction credits (%d > %d)\n",
625                       d->dd_lu_dev.ld_obd->obd_name, oh->ot_credits,
626                       osd_journal(dev)->j_max_transaction_buffers);
627                 /* XXX Limit the credits to 'max_transaction_buffers', and
628                  *     let the underlying filesystem to catch the error if
629                  *     we really need so many credits.
630                  *
631                  *     This should be removed when we can calculate the
632                  *     credits precisely. */
633                 oh->ot_credits = osd_journal(dev)->j_max_transaction_buffers;
634 #ifdef OSD_TRACK_DECLARES
635                 CERROR("  attr_set: %d, punch: %d, xattr_set: %d,\n",
636                        oh->ot_declare_attr_set, oh->ot_declare_punch,
637                        oh->ot_declare_xattr_set);
638                 CERROR("  create: %d, ref_add: %d, ref_del: %d, write: %d\n",
639                        oh->ot_declare_create, oh->ot_declare_ref_add,
640                        oh->ot_declare_ref_del, oh->ot_declare_write);
641                 CERROR("  insert: %d, delete: %d, destroy: %d\n",
642                        oh->ot_declare_insert, oh->ot_declare_delete,
643                        oh->ot_declare_destroy);
644 #endif
645         }
646
647         /*
648          * XXX temporary stuff. Some abstraction layer should
649          * be used.
650          */
651         jh = ldiskfs_journal_start_sb(osd_sb(dev), oh->ot_credits);
652         osd_th_started(oh);
653         if (!IS_ERR(jh)) {
654                 oh->ot_handle = jh;
655                 LASSERT(oti->oti_txns == 0);
656                 lu_context_init(&th->th_ctx, th->th_tags);
657                 lu_context_enter(&th->th_ctx);
658
659                 lu_device_get(&d->dd_lu_dev);
660                 oh->ot_dev_link = lu_ref_add(&d->dd_lu_dev.ld_reference,
661                                              "osd-tx", th);
662
663                 /*
664                  * XXX: current rule is that we first start tx,
665                  *      then lock object(s), but we can't use
666                  *      this rule for data (due to locking specifics
667                  *      in ldiskfs). also in long-term we'd like to
668                  *      use usually-used (locks;tx) ordering. so,
669                  *      UGLY thing is that we'll use one ordering for
670                  *      data (ofd) and reverse ordering for metadata
671                  *      (mdd). then at some point we'll fix the latter
672                  */
673                 if (lu_device_is_md(&d->dd_lu_dev)) {
674                         LASSERT(oti->oti_r_locks == 0);
675                         LASSERT(oti->oti_w_locks == 0);
676                 }
677
678                 oti->oti_txns++;
679                 rc = 0;
680         } else {
681                 rc = PTR_ERR(jh);
682         }
683 out:
684         RETURN(rc);
685 }
686
687 /*
688  * Concurrency: shouldn't matter.
689  */
690 static int osd_trans_stop(const struct lu_env *env, struct thandle *th)
691 {
692         int                     rc = 0;
693         struct osd_thandle     *oh;
694         struct osd_thread_info *oti = osd_oti_get(env);
695         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
696
697         ENTRY;
698
699         oh = container_of0(th, struct osd_thandle, ot_super);
700
701         if (oh->ot_handle != NULL) {
702                 handle_t *hdl = oh->ot_handle;
703
704                 hdl->h_sync = th->th_sync;
705
706                 /*
707                  * add commit callback
708                  * notice we don't do this in osd_trans_start()
709                  * as underlying transaction can change during truncate
710                  */
711                 osd_journal_callback_set(hdl, osd_trans_commit_cb,
712                                          &oh->ot_jcb);
713
714                 LASSERT(oti->oti_txns == 1);
715                 oti->oti_txns--;
716                 /*
717                  * XXX: current rule is that we first start tx,
718                  *      then lock object(s), but we can't use
719                  *      this rule for data (due to locking specifics
720                  *      in ldiskfs). also in long-term we'd like to
721                  *      use usually-used (locks;tx) ordering. so,
722                  *      UGLY thing is that we'll use one ordering for
723                  *      data (ofd) and reverse ordering for metadata
724                  *      (mdd). then at some point we'll fix the latter
725                  */
726                 if (lu_device_is_md(&th->th_dev->dd_lu_dev)) {
727                         LASSERT(oti->oti_r_locks == 0);
728                         LASSERT(oti->oti_w_locks == 0);
729                 }
730                 rc = dt_txn_hook_stop(env, th);
731                 if (rc != 0)
732                         CERROR("Failure in transaction hook: %d\n", rc);
733                 oh->ot_handle = NULL;
734                 OSD_CHECK_SLOW_TH(oh, oti->oti_dev,
735                                   rc = ldiskfs_journal_stop(hdl));
736                 if (rc != 0)
737                         CERROR("Failure to stop transaction: %d\n", rc);
738         } else {
739                 OBD_FREE_PTR(oh);
740         }
741
742         /* as we want IO to journal and data IO be concurrent, we don't block
743          * awaiting data IO completion in osd_do_bio(), instead we wait here
744          * once transaction is submitted to the journal. all reqular requests
745          * don't do direct IO (except read/write), thus this wait_event becomes
746          * no-op for them.
747          *
748          * IMPORTANT: we have to wait till any IO submited by the thread is
749          * completed otherwise iobuf may be corrupted by different request
750          */
751         cfs_wait_event(iobuf->dr_wait,
752                        cfs_atomic_read(&iobuf->dr_numreqs) == 0);
753         if (!rc)
754                 rc = iobuf->dr_error;
755
756         RETURN(rc);
757 }
758
759 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
760 {
761         struct osd_thandle *oh = container_of0(th, struct osd_thandle,
762                                                ot_super);
763
764         cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
765
766         return 0;
767 }
768
769 /*
770  * Called just before object is freed. Releases all resources except for
771  * object itself (that is released by osd_object_free()).
772  *
773  * Concurrency: no concurrent access is possible that late in object
774  * life-cycle.
775  */
776 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
777 {
778         struct osd_object *obj   = osd_obj(l);
779         struct inode      *inode = obj->oo_inode;
780
781         LINVRNT(osd_invariant(obj));
782
783         /*
784          * If object is unlinked remove fid->ino mapping from object index.
785          */
786
787         osd_index_fini(obj);
788         if (inode != NULL) {
789                 iput(inode);
790                 obj->oo_inode = NULL;
791         }
792 }
793
794 /*
795  * Concurrency: ->loo_object_release() is called under site spin-lock.
796  */
797 static void osd_object_release(const struct lu_env *env,
798                                struct lu_object *l)
799 {
800 }
801
802 /*
803  * Concurrency: shouldn't matter.
804  */
805 static int osd_object_print(const struct lu_env *env, void *cookie,
806                             lu_printer_t p, const struct lu_object *l)
807 {
808         struct osd_object *o = osd_obj(l);
809         struct iam_descr  *d;
810
811         if (o->oo_dir != NULL)
812                 d = o->oo_dir->od_container.ic_descr;
813         else
814                 d = NULL;
815         return (*p)(env, cookie, LUSTRE_OSD_NAME"-object@%p(i:%p:%lu/%u)[%s]",
816                     o, o->oo_inode,
817                     o->oo_inode ? o->oo_inode->i_ino : 0UL,
818                     o->oo_inode ? o->oo_inode->i_generation : 0,
819                     d ? d->id_ops->id_name : "plain");
820 }
821
822 /*
823  * Concurrency: shouldn't matter.
824  */
825 int osd_statfs(const struct lu_env *env, struct dt_device *d,
826                struct obd_statfs *sfs)
827 {
828         struct osd_device  *osd = osd_dt_dev(d);
829         struct super_block *sb = osd_sb(osd);
830         struct kstatfs     *ksfs;
831         int result = 0;
832
833         /* osd_lproc.c call this without env, allocate ksfs for that case */
834         if (unlikely(env == NULL)) {
835                 OBD_ALLOC_PTR(ksfs);
836                 if (ksfs == NULL)
837                         return -ENOMEM;
838         } else {
839                 ksfs = &osd_oti_get(env)->oti_ksfs;
840         }
841
842         cfs_spin_lock(&osd->od_osfs_lock);
843         /* cache 1 second */
844         if (cfs_time_before_64(osd->od_osfs_age, cfs_time_shift_64(-1))) {
845                 result = ll_do_statfs(sb, ksfs);
846                 if (likely(result == 0)) { /* N.B. statfs can't really fail */
847                         osd->od_osfs_age = cfs_time_current_64();
848                         statfs_pack(&osd->od_statfs, ksfs);
849                 }
850         }
851
852         if (likely(result == 0))
853                 *sfs = osd->od_statfs;
854         cfs_spin_unlock(&osd->od_osfs_lock);
855
856         if (unlikely(env == NULL))
857                 OBD_FREE_PTR(ksfs);
858
859         return result;
860 }
861
862 /*
863  * Concurrency: doesn't access mutable data.
864  */
865 static void osd_conf_get(const struct lu_env *env,
866                          const struct dt_device *dev,
867                          struct dt_device_param *param)
868 {
869         struct super_block *sb = osd_sb(osd_dt_dev(dev));
870
871         /*
872          * XXX should be taken from not-yet-existing fs abstraction layer.
873          */
874         param->ddp_max_name_len = LDISKFS_NAME_LEN;
875         param->ddp_max_nlink    = LDISKFS_LINK_MAX;
876         param->ddp_block_shift  = osd_sb(osd_dt_dev(dev))->s_blocksize_bits;
877         param->ddp_mntopts      = 0;
878         if (test_opt(sb, XATTR_USER))
879                 param->ddp_mntopts |= MNTOPT_USERXATTR;
880         if (test_opt(sb, POSIX_ACL))
881                 param->ddp_mntopts |= MNTOPT_ACL;
882
883 #if defined(LDISKFS_FEATURE_INCOMPAT_EA_INODE)
884         if (LDISKFS_HAS_INCOMPAT_FEATURE(sb, LDISKFS_FEATURE_INCOMPAT_EA_INODE))
885                 param->ddp_max_ea_size = LDISKFS_XATTR_MAX_LARGE_EA_SIZE;
886         else
887 #endif
888                 param->ddp_max_ea_size = sb->s_blocksize;
889
890 }
891
892 /**
893  * Helper function to get and fill the buffer with input values.
894  */
895 static struct lu_buf *osd_buf_get(const struct lu_env *env, void *area, ssize_t len)
896 {
897         struct lu_buf *buf;
898
899         buf = &osd_oti_get(env)->oti_buf;
900         buf->lb_buf = area;
901         buf->lb_len = len;
902         return buf;
903 }
904
905 /*
906  * Concurrency: shouldn't matter.
907  */
908 static int osd_sync(const struct lu_env *env, struct dt_device *d)
909 {
910         CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_NAME);
911         return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
912 }
913
914 /**
915  * Start commit for OSD device.
916  *
917  * An implementation of dt_commit_async method for OSD device.
918  * Asychronously starts underlayng fs sync and thereby a transaction
919  * commit.
920  *
921  * \param env environment
922  * \param d dt device
923  *
924  * \see dt_device_operations
925  */
926 static int osd_commit_async(const struct lu_env *env,
927                             struct dt_device *d)
928 {
929         struct super_block *s = osd_sb(osd_dt_dev(d));
930         ENTRY;
931
932         CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_NAME);
933         RETURN(s->s_op->sync_fs(s, 0));
934 }
935
936 /*
937  * Concurrency: shouldn't matter.
938  */
939
940 static int osd_ro(const struct lu_env *env, struct dt_device *d)
941 {
942         struct super_block *sb = osd_sb(osd_dt_dev(d));
943         int rc;
944         ENTRY;
945
946         CERROR("*** setting device %s read-only ***\n", LUSTRE_OSD_NAME);
947
948         rc = __lvfs_set_rdonly(sb->s_bdev, LDISKFS_SB(sb)->journal_bdev);
949         RETURN(rc);
950 }
951
952 /*
953  * Concurrency: serialization provided by callers.
954  */
955 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
956                               int mode, unsigned long timeout, __u32 alg,
957                               struct lustre_capa_key *keys)
958 {
959         struct osd_device *dev = osd_dt_dev(d);
960         ENTRY;
961
962         dev->od_fl_capa = mode;
963         dev->od_capa_timeout = timeout;
964         dev->od_capa_alg = alg;
965         dev->od_capa_keys = keys;
966         RETURN(0);
967 }
968
969 /**
970  * Concurrency: serialization provided by callers.
971  */
972 static void osd_init_quota_ctxt(const struct lu_env *env, struct dt_device *d,
973                                struct dt_quota_ctxt *ctxt, void *data)
974 {
975         struct obd_device *obd = (void *)ctxt;
976         struct vfsmount *mnt = (struct vfsmount *)data;
977         ENTRY;
978
979         obd->u.obt.obt_sb = mnt->mnt_root->d_inode->i_sb;
980         OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
981         obd->obd_lvfs_ctxt.pwdmnt = mnt;
982         obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
983         obd->obd_lvfs_ctxt.fs = get_ds();
984
985         EXIT;
986 }
987
988 /**
989  * Note: we do not count into QUOTA here.
990  * If we mount with --data_journal we may need more.
991  */
992 const int osd_dto_credits_noquota[DTO_NR] = {
993         /**
994          * Insert/Delete.
995          * INDEX_EXTRA_TRANS_BLOCKS(8) +
996          * SINGLEDATA_TRANS_BLOCKS(8)
997          * XXX Note: maybe iam need more, since iam have more level than
998          *           EXT3 htree.
999          */
1000         [DTO_INDEX_INSERT]  = 16,
1001         [DTO_INDEX_DELETE]  = 16,
1002         /**
1003          * Unused now
1004          */
1005         [DTO_INDEX_UPDATE]  = 16,
1006         /**
1007          * Create a object. The same as create object in EXT3.
1008          * DATA_TRANS_BLOCKS(14) +
1009          * INDEX_EXTRA_BLOCKS(8) +
1010          * 3(inode bits, groups, GDT)
1011          */
1012         [DTO_OBJECT_CREATE] = 25,
1013         /**
1014          * XXX: real credits to be fixed
1015          */
1016         [DTO_OBJECT_DELETE] = 25,
1017         /**
1018          * Attr set credits (inode)
1019          */
1020         [DTO_ATTR_SET_BASE] = 1,
1021         /**
1022          * Xattr set. The same as xattr of EXT3.
1023          * DATA_TRANS_BLOCKS(14)
1024          * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
1025          * are also counted in. Do not know why?
1026          */
1027         [DTO_XATTR_SET]     = 14,
1028         [DTO_LOG_REC]       = 14,
1029         /**
1030          * credits for inode change during write.
1031          */
1032         [DTO_WRITE_BASE]    = 3,
1033         /**
1034          * credits for single block write.
1035          */
1036         [DTO_WRITE_BLOCK]   = 14,
1037         /**
1038          * Attr set credits for chown.
1039          * This is extra credits for setattr, and it is null without quota
1040          */
1041         [DTO_ATTR_SET_CHOWN]= 0
1042 };
1043
1044 static const struct dt_device_operations osd_dt_ops = {
1045         .dt_root_get       = osd_root_get,
1046         .dt_statfs         = osd_statfs,
1047         .dt_trans_create   = osd_trans_create,
1048         .dt_trans_start    = osd_trans_start,
1049         .dt_trans_stop     = osd_trans_stop,
1050         .dt_trans_cb_add   = osd_trans_cb_add,
1051         .dt_conf_get       = osd_conf_get,
1052         .dt_sync           = osd_sync,
1053         .dt_ro             = osd_ro,
1054         .dt_commit_async   = osd_commit_async,
1055         .dt_init_capa_ctxt = osd_init_capa_ctxt,
1056         .dt_init_quota_ctxt= osd_init_quota_ctxt,
1057 };
1058
1059 static void osd_object_read_lock(const struct lu_env *env,
1060                                  struct dt_object *dt, unsigned role)
1061 {
1062         struct osd_object *obj = osd_dt_obj(dt);
1063         struct osd_thread_info *oti = osd_oti_get(env);
1064
1065         LINVRNT(osd_invariant(obj));
1066
1067         LASSERT(obj->oo_owner != env);
1068         cfs_down_read_nested(&obj->oo_sem, role);
1069
1070         LASSERT(obj->oo_owner == NULL);
1071         oti->oti_r_locks++;
1072 }
1073
1074 static void osd_object_write_lock(const struct lu_env *env,
1075                                   struct dt_object *dt, unsigned role)
1076 {
1077         struct osd_object *obj = osd_dt_obj(dt);
1078         struct osd_thread_info *oti = osd_oti_get(env);
1079
1080         LINVRNT(osd_invariant(obj));
1081
1082         LASSERT(obj->oo_owner != env);
1083         cfs_down_write_nested(&obj->oo_sem, role);
1084
1085         LASSERT(obj->oo_owner == NULL);
1086         obj->oo_owner = env;
1087         oti->oti_w_locks++;
1088 }
1089
1090 static void osd_object_read_unlock(const struct lu_env *env,
1091                                    struct dt_object *dt)
1092 {
1093         struct osd_object *obj = osd_dt_obj(dt);
1094         struct osd_thread_info *oti = osd_oti_get(env);
1095
1096         LINVRNT(osd_invariant(obj));
1097
1098         LASSERT(oti->oti_r_locks > 0);
1099         oti->oti_r_locks--;
1100         cfs_up_read(&obj->oo_sem);
1101 }
1102
1103 static void osd_object_write_unlock(const struct lu_env *env,
1104                                     struct dt_object *dt)
1105 {
1106         struct osd_object *obj = osd_dt_obj(dt);
1107         struct osd_thread_info *oti = osd_oti_get(env);
1108
1109         LINVRNT(osd_invariant(obj));
1110
1111         LASSERT(obj->oo_owner == env);
1112         LASSERT(oti->oti_w_locks > 0);
1113         oti->oti_w_locks--;
1114         obj->oo_owner = NULL;
1115         cfs_up_write(&obj->oo_sem);
1116 }
1117
1118 static int osd_object_write_locked(const struct lu_env *env,
1119                                    struct dt_object *dt)
1120 {
1121         struct osd_object *obj = osd_dt_obj(dt);
1122
1123         LINVRNT(osd_invariant(obj));
1124
1125         return obj->oo_owner == env;
1126 }
1127
1128 static int capa_is_sane(const struct lu_env *env,
1129                         struct osd_device *dev,
1130                         struct lustre_capa *capa,
1131                         struct lustre_capa_key *keys)
1132 {
1133         struct osd_thread_info *oti = osd_oti_get(env);
1134         struct lustre_capa *tcapa = &oti->oti_capa;
1135         struct obd_capa *oc;
1136         int i, rc = 0;
1137         ENTRY;
1138
1139         oc = capa_lookup(dev->od_capa_hash, capa, 0);
1140         if (oc) {
1141                 if (capa_is_expired(oc)) {
1142                         DEBUG_CAPA(D_ERROR, capa, "expired");
1143                         rc = -ESTALE;
1144                 }
1145                 capa_put(oc);
1146                 RETURN(rc);
1147         }
1148
1149         if (capa_is_expired_sec(capa)) {
1150                 DEBUG_CAPA(D_ERROR, capa, "expired");
1151                 RETURN(-ESTALE);
1152         }
1153
1154         cfs_spin_lock(&capa_lock);
1155         for (i = 0; i < 2; i++) {
1156                 if (keys[i].lk_keyid == capa->lc_keyid) {
1157                         oti->oti_capa_key = keys[i];
1158                         break;
1159                 }
1160         }
1161         cfs_spin_unlock(&capa_lock);
1162
1163         if (i == 2) {
1164                 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1165                 RETURN(-ESTALE);
1166         }
1167
1168         rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1169         if (rc)
1170                 RETURN(rc);
1171
1172         if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1173                 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1174                 RETURN(-EACCES);
1175         }
1176
1177         oc = capa_add(dev->od_capa_hash, capa);
1178         capa_put(oc);
1179
1180         RETURN(0);
1181 }
1182
1183 int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1184                     struct lustre_capa *capa, __u64 opc)
1185 {
1186         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1187         struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1188         struct md_capainfo *ci;
1189         int rc;
1190
1191         if (!dev->od_fl_capa)
1192                 return 0;
1193
1194         if (capa == BYPASS_CAPA)
1195                 return 0;
1196
1197         ci = md_capainfo(env);
1198         if (unlikely(!ci))
1199                 return 0;
1200
1201         if (ci->mc_auth == LC_ID_NONE)
1202                 return 0;
1203
1204         if (!capa) {
1205                 CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
1206                 return -EACCES;
1207         }
1208
1209         if (!lu_fid_eq(fid, &capa->lc_fid)) {
1210                 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1211                            PFID(fid));
1212                 return -EACCES;
1213         }
1214
1215         if (!capa_opc_supported(capa, opc)) {
1216                 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1217                 return -EACCES;
1218         }
1219
1220         if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
1221                 DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
1222                 return -EACCES;
1223         }
1224
1225         return 0;
1226 }
1227
1228 static struct timespec *osd_inode_time(const struct lu_env *env,
1229                                        struct inode *inode, __u64 seconds)
1230 {
1231         struct osd_thread_info *oti = osd_oti_get(env);
1232         struct timespec        *t   = &oti->oti_time;
1233
1234         t->tv_sec  = seconds;
1235         t->tv_nsec = 0;
1236         *t = timespec_trunc(*t, get_sb_time_gran(inode->i_sb));
1237         return t;
1238 }
1239
1240
1241 static void osd_inode_getattr(const struct lu_env *env,
1242                               struct inode *inode, struct lu_attr *attr)
1243 {
1244         attr->la_valid      |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
1245                                LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
1246                                LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE;
1247
1248         attr->la_atime      = LTIME_S(inode->i_atime);
1249         attr->la_mtime      = LTIME_S(inode->i_mtime);
1250         attr->la_ctime      = LTIME_S(inode->i_ctime);
1251         attr->la_mode       = inode->i_mode;
1252         attr->la_size       = i_size_read(inode);
1253         attr->la_blocks     = inode->i_blocks;
1254         attr->la_uid        = inode->i_uid;
1255         attr->la_gid        = inode->i_gid;
1256         attr->la_flags      = LDISKFS_I(inode)->i_flags;
1257         attr->la_nlink      = inode->i_nlink;
1258         attr->la_rdev       = inode->i_rdev;
1259         attr->la_blksize    = ll_inode_blksize(inode);
1260         attr->la_blkbits    = inode->i_blkbits;
1261 }
1262
1263 static int osd_attr_get(const struct lu_env *env,
1264                         struct dt_object *dt,
1265                         struct lu_attr *attr,
1266                         struct lustre_capa *capa)
1267 {
1268         struct osd_object *obj = osd_dt_obj(dt);
1269
1270         LASSERT(dt_object_exists(dt));
1271         LINVRNT(osd_invariant(obj));
1272
1273         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1274                 return -EACCES;
1275
1276         cfs_spin_lock(&obj->oo_guard);
1277         osd_inode_getattr(env, obj->oo_inode, attr);
1278         cfs_spin_unlock(&obj->oo_guard);
1279         return 0;
1280 }
1281
1282 static int osd_declare_attr_set(const struct lu_env *env,
1283                                 struct dt_object *dt,
1284                                 const struct lu_attr *attr,
1285                                 struct thandle *handle)
1286 {
1287         struct osd_thandle *oh;
1288         struct osd_object *obj;
1289
1290         LASSERT(dt != NULL);
1291         LASSERT(handle != NULL);
1292
1293         obj = osd_dt_obj(dt);
1294         LASSERT(osd_invariant(obj));
1295
1296         oh = container_of0(handle, struct osd_thandle, ot_super);
1297         LASSERT(oh->ot_handle == NULL);
1298
1299         OSD_DECLARE_OP(oh, attr_set);
1300         oh->ot_credits += osd_dto_credits_noquota[DTO_ATTR_SET_BASE];
1301
1302         if (attr && attr->la_valid & LA_UID) {
1303                 if (obj->oo_inode)
1304                         osd_declare_qid(dt, oh, USRQUOTA, obj->oo_inode->i_uid,
1305                                         obj->oo_inode);
1306                 osd_declare_qid(dt, oh, USRQUOTA, attr->la_uid, NULL);
1307         }
1308         if (attr && attr->la_valid & LA_GID) {
1309                 if (obj->oo_inode)
1310                         osd_declare_qid(dt, oh, GRPQUOTA, obj->oo_inode->i_gid,
1311                                         obj->oo_inode);
1312                 osd_declare_qid(dt, oh, GRPQUOTA, attr->la_gid, NULL);
1313         }
1314
1315         return 0;
1316 }
1317
1318 static int osd_inode_setattr(const struct lu_env *env,
1319                              struct inode *inode, const struct lu_attr *attr)
1320 {
1321         __u64 bits;
1322
1323         bits = attr->la_valid;
1324
1325         LASSERT(!(bits & LA_TYPE)); /* Huh? You want too much. */
1326
1327 #ifdef HAVE_QUOTA_SUPPORT
1328         if ((bits & LA_UID && attr->la_uid != inode->i_uid) ||
1329             (bits & LA_GID && attr->la_gid != inode->i_gid)) {
1330                 struct osd_ctxt *save = &osd_oti_get(env)->oti_ctxt;
1331                 struct iattr iattr;
1332                 int rc;
1333
1334                 iattr.ia_valid = 0;
1335                 if (bits & LA_UID)
1336                         iattr.ia_valid |= ATTR_UID;
1337                 if (bits & LA_GID)
1338                         iattr.ia_valid |= ATTR_GID;
1339                 iattr.ia_uid = attr->la_uid;
1340                 iattr.ia_gid = attr->la_gid;
1341                 osd_push_ctxt(env, save);
1342                 rc = ll_vfs_dq_transfer(inode, &iattr) ? -EDQUOT : 0;
1343                 osd_pop_ctxt(save);
1344                 if (rc != 0)
1345                         return rc;
1346         }
1347 #endif
1348
1349         if (bits & LA_ATIME)
1350                 inode->i_atime  = *osd_inode_time(env, inode, attr->la_atime);
1351         if (bits & LA_CTIME)
1352                 inode->i_ctime  = *osd_inode_time(env, inode, attr->la_ctime);
1353         if (bits & LA_MTIME)
1354                 inode->i_mtime  = *osd_inode_time(env, inode, attr->la_mtime);
1355         if (bits & LA_SIZE) {
1356                 LDISKFS_I(inode)->i_disksize = attr->la_size;
1357                 i_size_write(inode, attr->la_size);
1358         }
1359
1360 #if 0
1361         /* OSD should not change "i_blocks" which is used by quota.
1362          * "i_blocks" should be changed by ldiskfs only. */
1363         if (bits & LA_BLOCKS)
1364                 inode->i_blocks = attr->la_blocks;
1365 #endif
1366         if (bits & LA_MODE)
1367                 inode->i_mode   = (inode->i_mode & S_IFMT) |
1368                         (attr->la_mode & ~S_IFMT);
1369         if (bits & LA_UID)
1370                 inode->i_uid    = attr->la_uid;
1371         if (bits & LA_GID)
1372                 inode->i_gid    = attr->la_gid;
1373         if (bits & LA_NLINK)
1374                 inode->i_nlink  = attr->la_nlink;
1375         if (bits & LA_RDEV)
1376                 inode->i_rdev   = attr->la_rdev;
1377
1378         if (bits & LA_FLAGS) {
1379                 /* always keep S_NOCMTIME */
1380                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
1381                                  S_NOCMTIME;
1382         }
1383         return 0;
1384 }
1385
1386 static int osd_attr_set(const struct lu_env *env,
1387                         struct dt_object *dt,
1388                         const struct lu_attr *attr,
1389                         struct thandle *handle,
1390                         struct lustre_capa *capa)
1391 {
1392         struct osd_object *obj = osd_dt_obj(dt);
1393         int rc;
1394
1395         LASSERT(handle != NULL);
1396         LASSERT(dt_object_exists(dt));
1397         LASSERT(osd_invariant(obj));
1398
1399         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1400                 return -EACCES;
1401
1402         OSD_EXEC_OP(handle, attr_set);
1403
1404         cfs_spin_lock(&obj->oo_guard);
1405         rc = osd_inode_setattr(env, obj->oo_inode, attr);
1406         cfs_spin_unlock(&obj->oo_guard);
1407
1408         if (!rc)
1409                 obj->oo_inode->i_sb->s_op->dirty_inode(obj->oo_inode);
1410         return rc;
1411 }
1412
1413 /*
1414  * Object creation.
1415  *
1416  * XXX temporary solution.
1417  */
1418 static int osd_create_pre(struct osd_thread_info *info, struct osd_object *obj,
1419                           struct lu_attr *attr, struct thandle *th)
1420 {
1421         return 0;
1422 }
1423
1424 static int osd_create_post(struct osd_thread_info *info, struct osd_object *obj,
1425                            struct lu_attr *attr, struct thandle *th)
1426 {
1427         osd_object_init0(obj);
1428         if (obj->oo_inode && (obj->oo_inode->i_state & I_NEW))
1429                 unlock_new_inode(obj->oo_inode);
1430         return 0;
1431 }
1432
1433 struct dentry *osd_child_dentry_get(const struct lu_env *env,
1434                                     struct osd_object *obj,
1435                                     const char *name, const int namelen)
1436 {
1437         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
1438 }
1439
1440 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
1441                       cfs_umode_t mode,
1442                       struct dt_allocation_hint *hint,
1443                       struct thandle *th)
1444 {
1445         int result;
1446         struct osd_device  *osd = osd_obj2dev(obj);
1447         struct osd_thandle *oth;
1448         struct dt_object   *parent = NULL;
1449         struct inode       *inode;
1450 #ifdef HAVE_QUOTA_SUPPORT
1451         struct osd_ctxt    *save = &info->oti_ctxt;
1452 #endif
1453
1454         LINVRNT(osd_invariant(obj));
1455         LASSERT(obj->oo_inode == NULL);
1456         LASSERT(obj->oo_hl_head == NULL);
1457
1458         if (S_ISDIR(mode) && ldiskfs_pdo) {
1459                 obj->oo_hl_head =ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
1460                 if (obj->oo_hl_head == NULL)
1461                         return -ENOMEM;
1462         }
1463
1464         oth = container_of(th, struct osd_thandle, ot_super);
1465         LASSERT(oth->ot_handle->h_transaction != NULL);
1466
1467         if (hint && hint->dah_parent)
1468                 parent = hint->dah_parent;
1469
1470 #ifdef HAVE_QUOTA_SUPPORT
1471         osd_push_ctxt(info->oti_env, save);
1472 #endif
1473         inode = ldiskfs_create_inode(oth->ot_handle,
1474                                      parent ? osd_dt_obj(parent)->oo_inode :
1475                                               osd_sb(osd)->s_root->d_inode,
1476                                      mode);
1477 #ifdef HAVE_QUOTA_SUPPORT
1478         osd_pop_ctxt(save);
1479 #endif
1480         if (!IS_ERR(inode)) {
1481                 /* Do not update file c/mtime in ldiskfs.
1482                  * NB: don't need any lock because no contention at this
1483                  * early stage */
1484                 inode->i_flags |= S_NOCMTIME;
1485                 obj->oo_inode = inode;
1486                 result = 0;
1487         } else {
1488                 if (obj->oo_hl_head != NULL) {
1489                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
1490                         obj->oo_hl_head = NULL;
1491                 }
1492                 result = PTR_ERR(inode);
1493         }
1494         LINVRNT(osd_invariant(obj));
1495         return result;
1496 }
1497
1498 enum {
1499         OSD_NAME_LEN = 255
1500 };
1501
1502 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
1503                      struct lu_attr *attr,
1504                      struct dt_allocation_hint *hint,
1505                      struct dt_object_format *dof,
1506                      struct thandle *th)
1507 {
1508         int result;
1509         struct osd_thandle *oth;
1510         struct osd_device *osd = osd_obj2dev(obj);
1511         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1512
1513         LASSERT(S_ISDIR(attr->la_mode));
1514
1515         oth = container_of(th, struct osd_thandle, ot_super);
1516         LASSERT(oth->ot_handle->h_transaction != NULL);
1517         result = osd_mkfile(info, obj, mode, hint, th);
1518         if (result == 0 && osd->od_iop_mode == 0) {
1519                 LASSERT(obj->oo_inode != NULL);
1520                 /*
1521                  * XXX uh-oh... call low-level iam function directly.
1522                  */
1523
1524                 result = iam_lvar_create(obj->oo_inode, OSD_NAME_LEN, 4,
1525                                          sizeof (struct osd_fid_pack),
1526                                          oth->ot_handle);
1527         }
1528         return result;
1529 }
1530
1531 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
1532                         struct lu_attr *attr,
1533                         struct dt_allocation_hint *hint,
1534                         struct dt_object_format *dof,
1535                         struct thandle *th)
1536 {
1537         int result;
1538         struct osd_thandle *oth;
1539         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
1540
1541         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1542
1543         LASSERT(S_ISREG(attr->la_mode));
1544
1545         oth = container_of(th, struct osd_thandle, ot_super);
1546         LASSERT(oth->ot_handle->h_transaction != NULL);
1547
1548         result = osd_mkfile(info, obj, mode, hint, th);
1549         if (result == 0) {
1550                 LASSERT(obj->oo_inode != NULL);
1551                 if (feat->dif_flags & DT_IND_VARKEY)
1552                         result = iam_lvar_create(obj->oo_inode,
1553                                                  feat->dif_keysize_max,
1554                                                  feat->dif_ptrsize,
1555                                                  feat->dif_recsize_max,
1556                                                  oth->ot_handle);
1557                 else
1558                         result = iam_lfix_create(obj->oo_inode,
1559                                                  feat->dif_keysize_max,
1560                                                  feat->dif_ptrsize,
1561                                                  feat->dif_recsize_max,
1562                                                  oth->ot_handle);
1563
1564         }
1565         return result;
1566 }
1567
1568 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
1569                      struct lu_attr *attr,
1570                      struct dt_allocation_hint *hint,
1571                      struct dt_object_format *dof,
1572                      struct thandle *th)
1573 {
1574         LASSERT(S_ISREG(attr->la_mode));
1575         return osd_mkfile(info, obj, (attr->la_mode &
1576                                (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th);
1577 }
1578
1579 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
1580                      struct lu_attr *attr,
1581                      struct dt_allocation_hint *hint,
1582                      struct dt_object_format *dof,
1583                      struct thandle *th)
1584 {
1585         LASSERT(S_ISLNK(attr->la_mode));
1586         return osd_mkfile(info, obj, (attr->la_mode &
1587                               (S_IFMT | S_IRWXUGO | S_ISVTX)), hint, th);
1588 }
1589
1590 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
1591                      struct lu_attr *attr,
1592                      struct dt_allocation_hint *hint,
1593                      struct dt_object_format *dof,
1594                      struct thandle *th)
1595 {
1596         cfs_umode_t mode = attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX);
1597         int result;
1598
1599         LINVRNT(osd_invariant(obj));
1600         LASSERT(obj->oo_inode == NULL);
1601         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
1602                 S_ISFIFO(mode) || S_ISSOCK(mode));
1603
1604         result = osd_mkfile(info, obj, mode, hint, th);
1605         if (result == 0) {
1606                 LASSERT(obj->oo_inode != NULL);
1607                 init_special_inode(obj->oo_inode, mode, attr->la_rdev);
1608         }
1609         LINVRNT(osd_invariant(obj));
1610         return result;
1611 }
1612
1613 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
1614                               struct lu_attr *,
1615                               struct dt_allocation_hint *hint,
1616                               struct dt_object_format *dof,
1617                               struct thandle *);
1618
1619 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1620 {
1621         osd_obj_type_f result;
1622
1623         switch (type) {
1624         case DFT_DIR:
1625                 result = osd_mkdir;
1626                 break;
1627         case DFT_REGULAR:
1628                 result = osd_mkreg;
1629                 break;
1630         case DFT_SYM:
1631                 result = osd_mksym;
1632                 break;
1633         case DFT_NODE:
1634                 result = osd_mknod;
1635                 break;
1636         case DFT_INDEX:
1637                 result = osd_mk_index;
1638                 break;
1639
1640         default:
1641                 LBUG();
1642                 break;
1643         }
1644         return result;
1645 }
1646
1647
1648 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1649                         struct dt_object *parent, cfs_umode_t child_mode)
1650 {
1651         LASSERT(ah);
1652
1653         memset(ah, 0, sizeof(*ah));
1654         ah->dah_parent = parent;
1655         ah->dah_mode = child_mode;
1656 }
1657
1658 /**
1659  * Helper function for osd_object_create()
1660  *
1661  * \retval 0, on success
1662  */
1663 static int __osd_object_create(struct osd_thread_info *info,
1664                                struct osd_object *obj, struct lu_attr *attr,
1665                                struct dt_allocation_hint *hint,
1666                                struct dt_object_format *dof,
1667                                struct thandle *th)
1668 {
1669
1670         int result;
1671
1672         result = osd_create_pre(info, obj, attr, th);
1673         if (result == 0) {
1674                 result = osd_create_type_f(dof->dof_type)(info, obj,
1675                                            attr, hint, dof, th);
1676                 if (result == 0)
1677                         result = osd_create_post(info, obj, attr, th);
1678         }
1679         return result;
1680 }
1681
1682 /**
1683  * Helper function for osd_object_create()
1684  *
1685  * \retval 0, on success
1686  */
1687 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
1688                            const struct lu_fid *fid, struct thandle *th)
1689 {
1690         struct osd_thread_info *info = osd_oti_get(env);
1691         struct osd_inode_id    *id   = &info->oti_id;
1692         struct osd_device      *osd  = osd_obj2dev(obj);
1693         struct md_ucred        *uc   = md_ucred(env);
1694
1695         LASSERT(obj->oo_inode != NULL);
1696         LASSERT(uc != NULL);
1697
1698         id->oii_ino = obj->oo_inode->i_ino;
1699         id->oii_gen = obj->oo_inode->i_generation;
1700
1701         return osd_oi_insert(info, osd, fid, id, th,
1702                              uc->mu_cap & CFS_CAP_SYS_RESOURCE_MASK);
1703 }
1704
1705 static int osd_declare_object_create(const struct lu_env *env,
1706                                      struct dt_object *dt,
1707                                      struct lu_attr *attr,
1708                                      struct dt_allocation_hint *hint,
1709                                      struct dt_object_format *dof,
1710                                      struct thandle *handle)
1711 {
1712         struct osd_thandle *oh;
1713
1714         LASSERT(handle != NULL);
1715
1716         oh = container_of0(handle, struct osd_thandle, ot_super);
1717         LASSERT(oh->ot_handle == NULL);
1718
1719         OSD_DECLARE_OP(oh, create);
1720         oh->ot_credits += osd_dto_credits_noquota[DTO_OBJECT_CREATE];
1721         /* XXX: So far, only normal fid needs be inserted into the oi,
1722          *      things could be changed later. Revise following code then. */
1723         if (fid_is_norm(lu_object_fid(&dt->do_lu))) {
1724                 OSD_DECLARE_OP(oh, insert);
1725                 oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_INSERT];
1726         }
1727         /* If this is directory, then we expect . and .. to be inserted as
1728          * well. The one directory block always needs to be created for the
1729          * directory, so we could use DTO_WRITE_BASE here (GDT, block bitmap,
1730          * block), there is no danger of needing a tree for the first block.
1731          */
1732         if (attr && S_ISDIR(attr->la_mode)) {
1733                 OSD_DECLARE_OP(oh, insert);
1734                 OSD_DECLARE_OP(oh, insert);
1735                 oh->ot_credits += osd_dto_credits_noquota[DTO_WRITE_BASE];
1736         }
1737
1738         if (attr) {
1739                 osd_declare_qid(dt, oh, USRQUOTA, attr->la_uid, NULL);
1740                 osd_declare_qid(dt, oh, GRPQUOTA, attr->la_gid, NULL);
1741         }
1742         return 0;
1743 }
1744
1745 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1746                              struct lu_attr *attr,
1747                              struct dt_allocation_hint *hint,
1748                              struct dt_object_format *dof,
1749                              struct thandle *th)
1750 {
1751         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
1752         struct osd_object      *obj    = osd_dt_obj(dt);
1753         struct osd_thread_info *info   = osd_oti_get(env);
1754         int result;
1755
1756         ENTRY;
1757
1758         LINVRNT(osd_invariant(obj));
1759         LASSERT(!dt_object_exists(dt));
1760         LASSERT(osd_write_locked(env, obj));
1761         LASSERT(th != NULL);
1762
1763         OSD_EXEC_OP(th, create);
1764
1765         result = __osd_object_create(info, obj, attr, hint, dof, th);
1766         if (result == 0)
1767                 result = __osd_oi_insert(env, obj, fid, th);
1768
1769         LASSERT(ergo(result == 0, dt_object_exists(dt)));
1770         LASSERT(osd_invariant(obj));
1771         RETURN(result);
1772 }
1773
1774 /**
1775  * Called to destroy on-disk representation of the object
1776  *
1777  * Concurrency: must be locked
1778  */
1779 static int osd_declare_object_destroy(const struct lu_env *env,
1780                                       struct dt_object *dt,
1781                                       struct thandle *th)
1782 {
1783         struct osd_object  *obj = osd_dt_obj(dt);
1784         struct inode       *inode = obj->oo_inode;
1785         struct osd_thandle *oh;
1786
1787         ENTRY;
1788
1789         oh = container_of0(th, struct osd_thandle, ot_super);
1790         LASSERT(oh->ot_handle == NULL);
1791         LASSERT(inode);
1792
1793         OSD_DECLARE_OP(oh, destroy);
1794         OSD_DECLARE_OP(oh, delete);
1795         oh->ot_credits += osd_dto_credits_noquota[DTO_OBJECT_DELETE];
1796         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_DELETE];
1797
1798         osd_declare_qid(dt, oh, USRQUOTA, inode->i_uid, inode);
1799         osd_declare_qid(dt, oh, GRPQUOTA, inode->i_gid, inode);
1800
1801         RETURN(0);
1802 }
1803
1804 static int osd_object_destroy(const struct lu_env *env,
1805                               struct dt_object *dt,
1806                               struct thandle *th)
1807 {
1808         const struct lu_fid    *fid = lu_object_fid(&dt->do_lu);
1809         struct osd_object      *obj = osd_dt_obj(dt);
1810         struct inode           *inode = obj->oo_inode;
1811         struct osd_device      *osd = osd_obj2dev(obj);
1812         struct osd_thandle     *oh;
1813         int                     result;
1814         ENTRY;
1815
1816         oh = container_of0(th, struct osd_thandle, ot_super);
1817         LASSERT(oh->ot_handle);
1818         LASSERT(inode);
1819         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
1820
1821         if (S_ISDIR(inode->i_mode)) {
1822                 LASSERT(osd_inode_unlinked(inode) ||
1823                         inode->i_nlink == 1);
1824                 cfs_spin_lock(&obj->oo_guard);
1825                 inode->i_nlink = 0;
1826                 cfs_spin_unlock(&obj->oo_guard);
1827                 inode->i_sb->s_op->dirty_inode(inode);
1828         } else {
1829                 LASSERT(osd_inode_unlinked(inode));
1830         }
1831
1832         OSD_EXEC_OP(th, destroy);
1833
1834         result = osd_oi_delete(osd_oti_get(env), osd, fid, th);
1835
1836         /* XXX: add to ext3 orphan list */
1837         /* rc = ext3_orphan_add(handle_t *handle, struct inode *inode) */
1838
1839         /* not needed in the cache anymore */
1840         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
1841
1842         RETURN(0);
1843 }
1844
1845 /**
1846  * Helper function for osd_xattr_set()
1847  */
1848 static int __osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
1849                            const struct lu_buf *buf, const char *name, int fl)
1850 {
1851         struct osd_object      *obj      = osd_dt_obj(dt);
1852         struct inode           *inode    = obj->oo_inode;
1853         struct osd_thread_info *info     = osd_oti_get(env);
1854         struct dentry          *dentry   = &info->oti_child_dentry;
1855         int                     fs_flags = 0;
1856         int                     rc;
1857
1858         LASSERT(dt_object_exists(dt));
1859         LASSERT(inode->i_op != NULL && inode->i_op->setxattr != NULL);
1860         LASSERT(osd_write_locked(env, obj));
1861
1862         if (fl & LU_XATTR_REPLACE)
1863                 fs_flags |= XATTR_REPLACE;
1864
1865         if (fl & LU_XATTR_CREATE)
1866                 fs_flags |= XATTR_CREATE;
1867
1868         dentry->d_inode = inode;
1869         rc = inode->i_op->setxattr(dentry, name, buf->lb_buf,
1870                                    buf->lb_len, fs_flags);
1871         return rc;
1872 }
1873
1874 /**
1875  * Put the fid into lustre_mdt_attrs, and then place the structure
1876  * inode's ea. This fid should not be altered during the life time
1877  * of the inode.
1878  *
1879  * \retval +ve, on success
1880  * \retval -ve, on error
1881  *
1882  * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
1883  */
1884 static int osd_ea_fid_set(const struct lu_env *env, struct dt_object *dt,
1885                           const struct lu_fid *fid)
1886 {
1887         struct osd_thread_info  *info      = osd_oti_get(env);
1888         struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
1889
1890         lustre_lma_init(mdt_attrs, fid);
1891         lustre_lma_swab(mdt_attrs);
1892         return __osd_xattr_set(env, dt,
1893                                osd_buf_get(env, mdt_attrs, sizeof *mdt_attrs),
1894                                XATTR_NAME_LMA, LU_XATTR_CREATE);
1895
1896 }
1897
1898 /**
1899  * Helper function to form igif
1900  */
1901 static inline void osd_igif_get(const struct lu_env *env, struct inode  *inode,
1902                                 struct lu_fid *fid)
1903 {
1904         LU_IGIF_BUILD(fid, inode->i_ino, inode->i_generation);
1905 }
1906
1907 /**
1908  * ldiskfs supports fid in dirent, it is passed in dentry->d_fsdata.
1909  * lustre 1.8 also uses d_fsdata for passing other info to ldiskfs.
1910  * To have compatilibility with 1.8 ldiskfs driver we need to have
1911  * magic number at start of fid data.
1912  * \ldiskfs_dentry_param is used only to pass fid from osd to ldiskfs.
1913  * its inmemory API.
1914  */
1915 void osd_get_ldiskfs_dirent_param(struct ldiskfs_dentry_param *param,
1916                                   const struct dt_rec *fid)
1917 {
1918         param->edp_magic = LDISKFS_LUFID_MAGIC;
1919         param->edp_len =  sizeof(struct lu_fid) + 1;
1920
1921         fid_cpu_to_be((struct lu_fid *)param->edp_data,
1922                       (struct lu_fid *)fid);
1923 }
1924
1925 /**
1926  * Try to read the fid from inode ea into dt_rec, if return value
1927  * i.e. rc is +ve, then we got fid, otherwise we will have to form igif
1928  *
1929  * \param fid object fid.
1930  *
1931  * \retval 0 on success
1932  */
1933 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
1934                           __u32 ino, struct lu_fid *fid)
1935 {
1936         struct osd_thread_info  *info      = osd_oti_get(env);
1937         struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
1938         struct lu_device        *ldev   = obj->oo_dt.do_lu.lo_dev;
1939         struct dentry           *dentry = &info->oti_child_dentry;
1940         struct osd_inode_id     *id     = &info->oti_id;
1941         struct osd_device       *dev;
1942         struct inode            *inode;
1943         int                      rc;
1944
1945         ENTRY;
1946         dev  = osd_dev(ldev);
1947
1948         id->oii_ino = ino;
1949         id->oii_gen = OSD_OII_NOGEN;
1950
1951         inode = osd_iget(info, dev, id);
1952         if (IS_ERR(inode)) {
1953                 rc = PTR_ERR(inode);
1954                 GOTO(out,rc);
1955         }
1956         dentry->d_inode = inode;
1957
1958         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
1959         rc = inode->i_op->getxattr(dentry, XATTR_NAME_LMA, (void *)mdt_attrs,
1960                                    sizeof *mdt_attrs);
1961
1962         /* Check LMA compatibility */
1963         if (rc > 0 &&
1964             (mdt_attrs->lma_incompat & ~cpu_to_le32(LMA_INCOMPAT_SUPP))) {
1965                 CWARN("Inode %lx: Unsupported incompat LMA feature(s) %#x\n",
1966                       inode->i_ino, le32_to_cpu(mdt_attrs->lma_incompat) &
1967                       ~LMA_INCOMPAT_SUPP);
1968                 return -ENOSYS;
1969         }
1970
1971         if (rc > 0) {
1972                 lustre_lma_swab(mdt_attrs);
1973                 memcpy(fid, &mdt_attrs->lma_self_fid, sizeof(*fid));
1974                 rc = 0;
1975         } else if (rc == -ENODATA) {
1976                 osd_igif_get(env, inode, fid);
1977                 rc = 0;
1978         }
1979         iput(inode);
1980 out:
1981         RETURN(rc);
1982 }
1983
1984 /**
1985  * OSD layer object create function for interoperability mode (b11826).
1986  * This is mostly similar to osd_object_create(). Only difference being, fid is
1987  * inserted into inode ea here.
1988  *
1989  * \retval   0, on success
1990  * \retval -ve, on error
1991  */
1992 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
1993                                 struct lu_attr *attr,
1994                                 struct dt_allocation_hint *hint,
1995                                 struct dt_object_format *dof,
1996                                 struct thandle *th)
1997 {
1998         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
1999         struct osd_object      *obj    = osd_dt_obj(dt);
2000         struct osd_thread_info *info   = osd_oti_get(env);
2001         int                     result;
2002
2003         ENTRY;
2004
2005         LASSERT(osd_invariant(obj));
2006         LASSERT(!dt_object_exists(dt));
2007         LASSERT(osd_write_locked(env, obj));
2008         LASSERT(th != NULL);
2009
2010         OSD_EXEC_OP(th, create);
2011
2012         result = __osd_object_create(info, obj, attr, hint, dof, th);
2013         /* objects under osd root shld have igif fid, so dont add fid EA */
2014         if (result == 0 && fid_seq(fid) >= FID_SEQ_NORMAL)
2015                 result = osd_ea_fid_set(env, dt, fid);
2016
2017         if (result == 0)
2018                 result = __osd_oi_insert(env, obj, fid, th);
2019
2020         LASSERT(ergo(result == 0, dt_object_exists(dt)));
2021         LINVRNT(osd_invariant(obj));
2022         RETURN(result);
2023 }
2024
2025 static int osd_declare_object_ref_add(const struct lu_env *env,
2026                                       struct dt_object *dt,
2027                                       struct thandle *handle)
2028 {
2029         struct osd_thandle *oh;
2030
2031         /* it's possible that object doesn't exist yet */
2032         LASSERT(handle != NULL);
2033
2034         oh = container_of0(handle, struct osd_thandle, ot_super);
2035         LASSERT(oh->ot_handle == NULL);
2036
2037         OSD_DECLARE_OP(oh, ref_add);
2038         oh->ot_credits += osd_dto_credits_noquota[DTO_ATTR_SET_BASE];
2039
2040         return 0;
2041 }
2042
2043 /*
2044  * Concurrency: @dt is write locked.
2045  */
2046 static int osd_object_ref_add(const struct lu_env *env,
2047                               struct dt_object *dt, struct thandle *th)
2048 {
2049         struct osd_object *obj = osd_dt_obj(dt);
2050         struct inode      *inode = obj->oo_inode;
2051
2052         LINVRNT(osd_invariant(obj));
2053         LASSERT(dt_object_exists(dt));
2054         LASSERT(osd_write_locked(env, obj));
2055         LASSERT(th != NULL);
2056
2057         OSD_EXEC_OP(th, ref_add);
2058
2059         /*
2060          * DIR_NLINK feature is set for compatibility reasons if:
2061          * 1) nlinks > LDISKFS_LINK_MAX, or
2062          * 2) nlinks == 2, since this indicates i_nlink was previously 1.
2063          *
2064          * It is easier to always set this flag (rather than check and set),
2065          * since it has less overhead, and the superblock will be dirtied
2066          * at some point. Both e2fsprogs and any Lustre-supported ldiskfs
2067          * do not actually care whether this flag is set or not.
2068          */
2069         cfs_spin_lock(&obj->oo_guard);
2070         inode->i_nlink++;
2071         if (S_ISDIR(inode->i_mode) && inode->i_nlink > 1) {
2072                 if (inode->i_nlink >= LDISKFS_LINK_MAX ||
2073                     inode->i_nlink == 2)
2074                         inode->i_nlink = 1;
2075         }
2076         LASSERT(inode->i_nlink < LDISKFS_LINK_MAX);
2077         cfs_spin_unlock(&obj->oo_guard);
2078         inode->i_sb->s_op->dirty_inode(inode);
2079         LINVRNT(osd_invariant(obj));
2080
2081         return 0;
2082 }
2083
2084 static int osd_declare_object_ref_del(const struct lu_env *env,
2085                                       struct dt_object *dt,
2086                                       struct thandle *handle)
2087 {
2088         struct osd_thandle *oh;
2089
2090         LASSERT(dt_object_exists(dt));
2091         LASSERT(handle != NULL);
2092
2093         oh = container_of0(handle, struct osd_thandle, ot_super);
2094         LASSERT(oh->ot_handle == NULL);
2095
2096         OSD_DECLARE_OP(oh, ref_del);
2097         oh->ot_credits += osd_dto_credits_noquota[DTO_ATTR_SET_BASE];
2098
2099         return 0;
2100 }
2101
2102 /*
2103  * Concurrency: @dt is write locked.
2104  */
2105 static int osd_object_ref_del(const struct lu_env *env, struct dt_object *dt,
2106                               struct thandle *th)
2107 {
2108         struct osd_object *obj = osd_dt_obj(dt);
2109         struct inode      *inode = obj->oo_inode;
2110
2111         LINVRNT(osd_invariant(obj));
2112         LASSERT(dt_object_exists(dt));
2113         LASSERT(osd_write_locked(env, obj));
2114         LASSERT(th != NULL);
2115
2116         OSD_EXEC_OP(th, ref_del);
2117
2118         cfs_spin_lock(&obj->oo_guard);
2119         LASSERT(inode->i_nlink > 0);
2120         inode->i_nlink--;
2121         /* If this is/was a many-subdir directory (nlink > LDISKFS_LINK_MAX)
2122          * then the nlink count is 1. Don't let it be set to 0 or the directory
2123          * inode will be deleted incorrectly. */
2124         if (S_ISDIR(inode->i_mode) && inode->i_nlink == 0)
2125                 inode->i_nlink++;
2126         cfs_spin_unlock(&obj->oo_guard);
2127         inode->i_sb->s_op->dirty_inode(inode);
2128         LINVRNT(osd_invariant(obj));
2129
2130         return 0;
2131 }
2132
2133 /*
2134  * Get the 64-bit version for an inode.
2135  */
2136 static int osd_object_version_get(const struct lu_env *env,
2137                                   struct dt_object *dt, dt_obj_version_t *ver)
2138 {
2139         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2140
2141         CDEBUG(D_INODE, "Get version "LPX64" for inode %lu\n",
2142                LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2143         *ver = LDISKFS_I(inode)->i_fs_version;
2144         return 0;
2145 }
2146
2147 /*
2148  * Concurrency: @dt is read locked.
2149  */
2150 static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
2151                          struct lu_buf *buf, const char *name,
2152                          struct lustre_capa *capa)
2153 {
2154         struct osd_object      *obj    = osd_dt_obj(dt);
2155         struct inode           *inode  = obj->oo_inode;
2156         struct osd_thread_info *info   = osd_oti_get(env);
2157         struct dentry          *dentry = &info->oti_obj_dentry;
2158
2159         /* version get is not real XATTR but uses xattr API */
2160         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2161                 /* for version we are just using xattr API but change inode
2162                  * field instead */
2163                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2164                 osd_object_version_get(env, dt, buf->lb_buf);
2165                 return sizeof(dt_obj_version_t);
2166         }
2167
2168         LASSERT(dt_object_exists(dt));
2169         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
2170         LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
2171
2172         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2173                 return -EACCES;
2174
2175         dentry->d_inode = inode;
2176         return inode->i_op->getxattr(dentry, name, buf->lb_buf, buf->lb_len);
2177 }
2178
2179
2180 static int osd_declare_xattr_set(const struct lu_env *env,
2181                                  struct dt_object *dt,
2182                                  const struct lu_buf *buf, const char *name,
2183                                  int fl, struct thandle *handle)
2184 {
2185         struct osd_thandle *oh;
2186
2187         LASSERT(handle != NULL);
2188
2189         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2190                 /* no credits for version */
2191                 return 0;
2192         }
2193
2194         oh = container_of0(handle, struct osd_thandle, ot_super);
2195         LASSERT(oh->ot_handle == NULL);
2196
2197         OSD_DECLARE_OP(oh, xattr_set);
2198         oh->ot_credits += osd_dto_credits_noquota[DTO_XATTR_SET];
2199
2200         return 0;
2201 }
2202
2203 /*
2204  * Set the 64-bit version for object
2205  */
2206 static void osd_object_version_set(const struct lu_env *env,
2207                                    struct dt_object *dt,
2208                                    dt_obj_version_t *new_version)
2209 {
2210         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2211
2212         CDEBUG(D_INODE, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2213                *new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2214
2215         LDISKFS_I(inode)->i_fs_version = *new_version;
2216         /** Version is set after all inode operations are finished,
2217          *  so we should mark it dirty here */
2218         inode->i_sb->s_op->dirty_inode(inode);
2219 }
2220
2221 /*
2222  * Concurrency: @dt is write locked.
2223  */
2224 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2225                          const struct lu_buf *buf, const char *name, int fl,
2226                          struct thandle *handle, struct lustre_capa *capa)
2227 {
2228         LASSERT(handle != NULL);
2229
2230         /* version set is not real XATTR */
2231         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2232                 /* for version we are just using xattr API but change inode
2233                  * field instead */
2234                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2235                 osd_object_version_set(env, dt, buf->lb_buf);
2236                 return sizeof(dt_obj_version_t);
2237         }
2238
2239         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
2240                 return -EACCES;
2241
2242         OSD_EXEC_OP(handle, xattr_set);
2243         return __osd_xattr_set(env, dt, buf, name, fl);
2244 }
2245
2246 /*
2247  * Concurrency: @dt is read locked.
2248  */
2249 static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
2250                           struct lu_buf *buf, struct lustre_capa *capa)
2251 {
2252         struct osd_object      *obj    = osd_dt_obj(dt);
2253         struct inode           *inode  = obj->oo_inode;
2254         struct osd_thread_info *info   = osd_oti_get(env);
2255         struct dentry          *dentry = &info->oti_obj_dentry;
2256
2257         LASSERT(dt_object_exists(dt));
2258         LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
2259         LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
2260
2261         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2262                 return -EACCES;
2263
2264         dentry->d_inode = inode;
2265         return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
2266 }
2267
2268 static int osd_declare_xattr_del(const struct lu_env *env,
2269                                  struct dt_object *dt, const char *name,
2270                                  struct thandle *handle)
2271 {
2272         struct osd_thandle *oh;
2273
2274         LASSERT(dt_object_exists(dt));
2275         LASSERT(handle != NULL);
2276
2277         oh = container_of0(handle, struct osd_thandle, ot_super);
2278         LASSERT(oh->ot_handle == NULL);
2279
2280         OSD_DECLARE_OP(oh, xattr_set);
2281         oh->ot_credits += osd_dto_credits_noquota[DTO_XATTR_SET];
2282
2283         return 0;
2284 }
2285
2286 /*
2287  * Concurrency: @dt is write locked.
2288  */
2289 static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
2290                          const char *name, struct thandle *handle,
2291                          struct lustre_capa *capa)
2292 {
2293         struct osd_object      *obj    = osd_dt_obj(dt);
2294         struct inode           *inode  = obj->oo_inode;
2295         struct osd_thread_info *info   = osd_oti_get(env);
2296         struct dentry          *dentry = &info->oti_obj_dentry;
2297         int                     rc;
2298
2299         LASSERT(dt_object_exists(dt));
2300         LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
2301         LASSERT(osd_write_locked(env, obj));
2302         LASSERT(handle != NULL);
2303
2304         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
2305                 return -EACCES;
2306
2307         OSD_EXEC_OP(handle, xattr_set);
2308
2309         dentry->d_inode = inode;
2310         rc = inode->i_op->removexattr(dentry, name);
2311         return rc;
2312 }
2313
2314 static struct obd_capa *osd_capa_get(const struct lu_env *env,
2315                                      struct dt_object *dt,
2316                                      struct lustre_capa *old,
2317                                      __u64 opc)
2318 {
2319         struct osd_thread_info *info = osd_oti_get(env);
2320         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
2321         struct osd_object *obj = osd_dt_obj(dt);
2322         struct osd_device *dev = osd_obj2dev(obj);
2323         struct lustre_capa_key *key = &info->oti_capa_key;
2324         struct lustre_capa *capa = &info->oti_capa;
2325         struct obd_capa *oc;
2326         struct md_capainfo *ci;
2327         int rc;
2328         ENTRY;
2329
2330         if (!dev->od_fl_capa)
2331                 RETURN(ERR_PTR(-ENOENT));
2332
2333         LASSERT(dt_object_exists(dt));
2334         LINVRNT(osd_invariant(obj));
2335
2336         /* renewal sanity check */
2337         if (old && osd_object_auth(env, dt, old, opc))
2338                 RETURN(ERR_PTR(-EACCES));
2339
2340         ci = md_capainfo(env);
2341         if (unlikely(!ci))
2342                 RETURN(ERR_PTR(-ENOENT));
2343
2344         switch (ci->mc_auth) {
2345         case LC_ID_NONE:
2346                 RETURN(NULL);
2347         case LC_ID_PLAIN:
2348                 capa->lc_uid = obj->oo_inode->i_uid;
2349                 capa->lc_gid = obj->oo_inode->i_gid;
2350                 capa->lc_flags = LC_ID_PLAIN;
2351                 break;
2352         case LC_ID_CONVERT: {
2353                 __u32 d[4], s[4];
2354
2355                 s[0] = obj->oo_inode->i_uid;
2356                 cfs_get_random_bytes(&(s[1]), sizeof(__u32));
2357                 s[2] = obj->oo_inode->i_gid;
2358                 cfs_get_random_bytes(&(s[3]), sizeof(__u32));
2359                 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
2360                 if (unlikely(rc))
2361                         RETURN(ERR_PTR(rc));
2362
2363                 capa->lc_uid   = ((__u64)d[1] << 32) | d[0];
2364                 capa->lc_gid   = ((__u64)d[3] << 32) | d[2];
2365                 capa->lc_flags = LC_ID_CONVERT;
2366                 break;
2367         }
2368         default:
2369                 RETURN(ERR_PTR(-EINVAL));
2370         }
2371
2372         capa->lc_fid = *fid;
2373         capa->lc_opc = opc;
2374         capa->lc_flags |= dev->od_capa_alg << 24;
2375         capa->lc_timeout = dev->od_capa_timeout;
2376         capa->lc_expiry = 0;
2377
2378         oc = capa_lookup(dev->od_capa_hash, capa, 1);
2379         if (oc) {
2380                 LASSERT(!capa_is_expired(oc));
2381                 RETURN(oc);
2382         }
2383
2384         cfs_spin_lock(&capa_lock);
2385         *key = dev->od_capa_keys[1];
2386         cfs_spin_unlock(&capa_lock);
2387
2388         capa->lc_keyid = key->lk_keyid;
2389         capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
2390
2391         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
2392         if (rc) {
2393                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
2394                 RETURN(ERR_PTR(rc));
2395         }
2396
2397         oc = capa_add(dev->od_capa_hash, capa);
2398         RETURN(oc);
2399 }
2400
2401 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt)
2402 {
2403         struct osd_object      *obj    = osd_dt_obj(dt);
2404         struct inode           *inode  = obj->oo_inode;
2405         struct osd_thread_info *info   = osd_oti_get(env);
2406         struct dentry          *dentry = &info->oti_obj_dentry;
2407         struct file            *file   = &info->oti_file;
2408         int                     rc;
2409
2410         ENTRY;
2411
2412         dentry->d_inode = inode;
2413         file->f_dentry = dentry;
2414         file->f_mapping = inode->i_mapping;
2415         file->f_op = inode->i_fop;
2416         LOCK_INODE_MUTEX(inode);
2417         rc = file->f_op->fsync(file, dentry, 0);
2418         UNLOCK_INODE_MUTEX(inode);
2419         RETURN(rc);
2420 }
2421
2422 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
2423                         void **data)
2424 {
2425         struct osd_object *obj = osd_dt_obj(dt);
2426         ENTRY;
2427
2428         *data = (void *)obj->oo_inode;
2429         RETURN(0);
2430 }
2431
2432 /*
2433  * Index operations.
2434  */
2435
2436 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
2437                            const struct dt_index_features *feat)
2438 {
2439         struct iam_descr *descr;
2440
2441         if (osd_object_is_root(o))
2442                 return feat == &dt_directory_features;
2443
2444         LASSERT(o->oo_dir != NULL);
2445
2446         descr = o->oo_dir->od_container.ic_descr;
2447         if (feat == &dt_directory_features) {
2448                 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
2449                         return 1;
2450                 else
2451                         return 0;
2452         } else {
2453                 return
2454                         feat->dif_keysize_min <= descr->id_key_size &&
2455                         descr->id_key_size <= feat->dif_keysize_max &&
2456                         feat->dif_recsize_min <= descr->id_rec_size &&
2457                         descr->id_rec_size <= feat->dif_recsize_max &&
2458                         !(feat->dif_flags & (DT_IND_VARKEY |
2459                                              DT_IND_VARREC | DT_IND_NONUNQ)) &&
2460                         ergo(feat->dif_flags & DT_IND_UPDATE,
2461                              1 /* XXX check that object (and file system) is
2462                                 * writable */);
2463         }
2464 }
2465
2466 static int osd_iam_container_init(const struct lu_env *env,
2467                                   struct osd_object *obj,
2468                                   struct osd_directory *dir)
2469 {
2470         struct iam_container *bag = &dir->od_container;
2471         int result;
2472
2473         result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
2474         if (result != 0)
2475                 return result;
2476
2477         result = iam_container_setup(bag);
2478         if (result != 0)
2479                 goto out;
2480
2481         if (osd_obj2dev(obj)->od_iop_mode) {
2482                 u32 ptr = bag->ic_descr->id_ops->id_root_ptr(bag);
2483
2484                 bag->ic_root_bh = ldiskfs_bread(NULL, obj->oo_inode,
2485                                                 ptr, 0, &result);
2486         }
2487
2488  out:
2489         if (result == 0)
2490                 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
2491         else
2492                 iam_container_fini(bag);
2493
2494         return result;
2495 }
2496
2497
2498 /*
2499  * Concurrency: no external locking is necessary.
2500  */
2501 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
2502                          const struct dt_index_features *feat)
2503 {
2504         int result;
2505         int ea_dir = 0;
2506         struct osd_object *obj = osd_dt_obj(dt);
2507         struct osd_device *osd = osd_obj2dev(obj);
2508
2509         LINVRNT(osd_invariant(obj));
2510         LASSERT(dt_object_exists(dt));
2511
2512         if (osd_object_is_root(obj)) {
2513                 dt->do_index_ops = &osd_index_ea_ops;
2514                 result = 0;
2515         } else if (feat == &dt_directory_features && osd->od_iop_mode) {
2516                 dt->do_index_ops = &osd_index_ea_ops;
2517                 if (S_ISDIR(obj->oo_inode->i_mode))
2518                         result = 0;
2519                 else
2520                         result = -ENOTDIR;
2521                 ea_dir = 1;
2522         } else if (!osd_has_index(obj)) {
2523                 struct osd_directory *dir;
2524
2525                 OBD_ALLOC_PTR(dir);
2526                 if (dir != NULL) {
2527
2528                         cfs_spin_lock(&obj->oo_guard);
2529                         if (obj->oo_dir == NULL)
2530                                 obj->oo_dir = dir;
2531                         else
2532                                 /*
2533                                  * Concurrent thread allocated container data.
2534                                  */
2535                                 OBD_FREE_PTR(dir);
2536                         cfs_spin_unlock(&obj->oo_guard);
2537                         /*
2538                          * Now, that we have container data, serialize its
2539                          * initialization.
2540                          */
2541                         cfs_down_write(&obj->oo_ext_idx_sem);
2542                         /*
2543                          * recheck under lock.
2544                          */
2545                         if (!osd_has_index(obj))
2546                                 result = osd_iam_container_init(env, obj, dir);
2547                         else
2548                                 result = 0;
2549                         cfs_up_write(&obj->oo_ext_idx_sem);
2550                 } else {
2551                         result = -ENOMEM;
2552                 }
2553         } else {
2554                 result = 0;
2555         }
2556
2557         if (result == 0 && ea_dir == 0) {
2558                 if (!osd_iam_index_probe(env, obj, feat))
2559                         result = -ENOTDIR;
2560         }
2561         LINVRNT(osd_invariant(obj));
2562
2563         return result;
2564 }
2565
2566 static const struct dt_object_operations osd_obj_ops = {
2567         .do_read_lock         = osd_object_read_lock,
2568         .do_write_lock        = osd_object_write_lock,
2569         .do_read_unlock       = osd_object_read_unlock,
2570         .do_write_unlock      = osd_object_write_unlock,
2571         .do_write_locked      = osd_object_write_locked,
2572         .do_attr_get          = osd_attr_get,
2573         .do_declare_attr_set  = osd_declare_attr_set,
2574         .do_attr_set          = osd_attr_set,
2575         .do_ah_init           = osd_ah_init,
2576         .do_declare_create    = osd_declare_object_create,
2577         .do_create            = osd_object_create,
2578         .do_declare_destroy   = osd_declare_object_destroy,
2579         .do_destroy           = osd_object_destroy,
2580         .do_index_try         = osd_index_try,
2581         .do_declare_ref_add   = osd_declare_object_ref_add,
2582         .do_ref_add           = osd_object_ref_add,
2583         .do_declare_ref_del   = osd_declare_object_ref_del,
2584         .do_ref_del           = osd_object_ref_del,
2585         .do_xattr_get         = osd_xattr_get,
2586         .do_declare_xattr_set = osd_declare_xattr_set,
2587         .do_xattr_set         = osd_xattr_set,
2588         .do_declare_xattr_del = osd_declare_xattr_del,
2589         .do_xattr_del         = osd_xattr_del,
2590         .do_xattr_list        = osd_xattr_list,
2591         .do_capa_get          = osd_capa_get,
2592         .do_object_sync       = osd_object_sync,
2593         .do_data_get          = osd_data_get,
2594 };
2595
2596 /**
2597  * dt_object_operations for interoperability mode
2598  * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
2599  */
2600 static const struct dt_object_operations osd_obj_ea_ops = {
2601         .do_read_lock         = osd_object_read_lock,
2602         .do_write_lock        = osd_object_write_lock,
2603         .do_read_unlock       = osd_object_read_unlock,
2604         .do_write_unlock      = osd_object_write_unlock,
2605         .do_write_locked      = osd_object_write_locked,
2606         .do_attr_get          = osd_attr_get,
2607         .do_declare_attr_set  = osd_declare_attr_set,
2608         .do_attr_set          = osd_attr_set,
2609         .do_ah_init           = osd_ah_init,
2610         .do_declare_create    = osd_declare_object_create,
2611         .do_create            = osd_object_ea_create,
2612         .do_declare_destroy   = osd_declare_object_destroy,
2613         .do_destroy           = osd_object_destroy,
2614         .do_index_try         = osd_index_try,
2615         .do_declare_ref_add   = osd_declare_object_ref_add,
2616         .do_ref_add           = osd_object_ref_add,
2617         .do_declare_ref_del   = osd_declare_object_ref_del,
2618         .do_ref_del           = osd_object_ref_del,
2619         .do_xattr_get         = osd_xattr_get,
2620         .do_declare_xattr_set = osd_declare_xattr_set,
2621         .do_xattr_set         = osd_xattr_set,
2622         .do_declare_xattr_del = osd_declare_xattr_del,
2623         .do_xattr_del         = osd_xattr_del,
2624         .do_xattr_list        = osd_xattr_list,
2625         .do_capa_get          = osd_capa_get,
2626         .do_object_sync       = osd_object_sync,
2627         .do_data_get          = osd_data_get,
2628 };
2629
2630 static int osd_index_declare_iam_delete(const struct lu_env *env,
2631                                         struct dt_object *dt,
2632                                         const struct dt_key *key,
2633                                         struct thandle *handle)
2634 {
2635         struct osd_thandle    *oh;
2636
2637         oh = container_of0(handle, struct osd_thandle, ot_super);
2638         LASSERT(oh->ot_handle == NULL);
2639
2640         OSD_DECLARE_OP(oh, delete);
2641         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_DELETE];
2642
2643         return 0;
2644 }
2645
2646 /**
2647  *      delete a (key, value) pair from index \a dt specified by \a key
2648  *
2649  *      \param  dt      osd index object
2650  *      \param  key     key for index
2651  *      \param  rec     record reference
2652  *      \param  handle  transaction handler
2653  *
2654  *      \retval  0  success
2655  *      \retval -ve   failure
2656  */
2657
2658 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
2659                                 const struct dt_key *key,
2660                                 struct thandle *handle,
2661                                 struct lustre_capa *capa)
2662 {
2663         struct osd_object     *obj = osd_dt_obj(dt);
2664         struct osd_thandle    *oh;
2665         struct iam_path_descr *ipd;
2666         struct iam_container  *bag = &obj->oo_dir->od_container;
2667         int                    rc;
2668
2669         ENTRY;
2670
2671         LINVRNT(osd_invariant(obj));
2672         LASSERT(dt_object_exists(dt));
2673         LASSERT(bag->ic_object == obj->oo_inode);
2674         LASSERT(handle != NULL);
2675
2676         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2677                 RETURN(-EACCES);
2678
2679         OSD_EXEC_OP(handle, delete);
2680
2681         ipd = osd_idx_ipd_get(env, bag);
2682         if (unlikely(ipd == NULL))
2683                 RETURN(-ENOMEM);
2684
2685         oh = container_of0(handle, struct osd_thandle, ot_super);
2686         LASSERT(oh->ot_handle != NULL);
2687         LASSERT(oh->ot_handle->h_transaction != NULL);
2688
2689         rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
2690         osd_ipd_put(env, bag, ipd);
2691         LINVRNT(osd_invariant(obj));
2692         RETURN(rc);
2693 }
2694
2695 static int osd_index_declare_ea_delete(const struct lu_env *env,
2696                                        struct dt_object *dt,
2697                                        const struct dt_key *key,
2698                                        struct thandle *handle)
2699 {
2700         struct osd_thandle *oh;
2701
2702         LASSERT(dt_object_exists(dt));
2703         LASSERT(handle != NULL);
2704
2705         oh = container_of0(handle, struct osd_thandle, ot_super);
2706         LASSERT(oh->ot_handle == NULL);
2707
2708         OSD_DECLARE_OP(oh, delete);
2709         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_DELETE];
2710
2711         LASSERT(osd_dt_obj(dt)->oo_inode);
2712         osd_declare_qid(dt, oh, USRQUOTA, osd_dt_obj(dt)->oo_inode->i_uid,
2713                         osd_dt_obj(dt)->oo_inode);
2714         osd_declare_qid(dt, oh, GRPQUOTA, osd_dt_obj(dt)->oo_inode->i_gid,
2715                         osd_dt_obj(dt)->oo_inode);
2716
2717         return 0;
2718 }
2719
2720 static inline int osd_get_fid_from_dentry(struct ldiskfs_dir_entry_2 *de,
2721                                           struct dt_rec *fid)
2722 {
2723         struct osd_fid_pack *rec;
2724         int                  rc = -ENODATA;
2725
2726         if (de->file_type & LDISKFS_DIRENT_LUFID) {
2727                 rec = (struct osd_fid_pack *) (de->name + de->name_len + 1);
2728                 rc = osd_fid_unpack((struct lu_fid *)fid, rec);
2729         }
2730         RETURN(rc);
2731 }
2732
2733 /**
2734  * Index delete function for interoperability mode (b11826).
2735  * It will remove the directory entry added by osd_index_ea_insert().
2736  * This entry is needed to maintain name->fid mapping.
2737  *
2738  * \param key,  key i.e. file entry to be deleted
2739  *
2740  * \retval   0, on success
2741  * \retval -ve, on error
2742  */
2743 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
2744                                const struct dt_key *key,
2745                                struct thandle *handle,
2746                                struct lustre_capa *capa)
2747 {
2748         struct osd_object          *obj    = osd_dt_obj(dt);
2749         struct inode               *dir    = obj->oo_inode;
2750         struct dentry              *dentry;
2751         struct osd_thandle         *oh;
2752         struct ldiskfs_dir_entry_2 *de;
2753         struct buffer_head         *bh;
2754         struct htree_lock          *hlock = NULL;
2755         int                         rc;
2756
2757         ENTRY;
2758
2759         LINVRNT(osd_invariant(obj));
2760         LASSERT(dt_object_exists(dt));
2761         LASSERT(handle != NULL);
2762
2763         OSD_EXEC_OP(handle, delete);
2764
2765         oh = container_of(handle, struct osd_thandle, ot_super);
2766         LASSERT(oh->ot_handle != NULL);
2767         LASSERT(oh->ot_handle->h_transaction != NULL);
2768
2769         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2770                 RETURN(-EACCES);
2771
2772         dentry = osd_child_dentry_get(env, obj,
2773                                       (char *)key, strlen((char *)key));
2774
2775         if (obj->oo_hl_head != NULL) {
2776                 hlock = osd_oti_get(env)->oti_hlock;
2777                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
2778                                    dir, LDISKFS_HLOCK_DEL);
2779         } else {
2780                 cfs_down_write(&obj->oo_ext_idx_sem);
2781         }
2782
2783         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
2784         if (bh) {
2785                 rc = ldiskfs_delete_entry(oh->ot_handle,
2786                                           dir, de, bh);
2787                 brelse(bh);
2788         } else {
2789                 rc = -ENOENT;
2790         }
2791         if (hlock != NULL)
2792                 ldiskfs_htree_unlock(hlock);
2793         else
2794                 cfs_up_write(&obj->oo_ext_idx_sem);
2795
2796         LASSERT(osd_invariant(obj));
2797         RETURN(rc);
2798 }
2799
2800 /**
2801  *      Lookup index for \a key and copy record to \a rec.
2802  *
2803  *      \param  dt      osd index object
2804  *      \param  key     key for index
2805  *      \param  rec     record reference
2806  *
2807  *      \retval  +ve  success : exact mach
2808  *      \retval  0    return record with key not greater than \a key
2809  *      \retval -ve   failure
2810  */
2811 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
2812                                 struct dt_rec *rec, const struct dt_key *key,
2813                                 struct lustre_capa *capa)
2814 {
2815         struct osd_object      *obj = osd_dt_obj(dt);
2816         struct iam_path_descr  *ipd;
2817         struct iam_container   *bag = &obj->oo_dir->od_container;
2818         struct osd_thread_info *oti = osd_oti_get(env);
2819         struct iam_iterator    *it = &oti->oti_idx_it;
2820         struct iam_rec         *iam_rec;
2821         int                     rc;
2822
2823         ENTRY;
2824
2825         LASSERT(osd_invariant(obj));
2826         LASSERT(dt_object_exists(dt));
2827         LASSERT(bag->ic_object == obj->oo_inode);
2828
2829         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
2830                 RETURN(-EACCES);
2831
2832         ipd = osd_idx_ipd_get(env, bag);
2833         if (IS_ERR(ipd))
2834                 RETURN(-ENOMEM);
2835
2836         /* got ipd now we can start iterator. */
2837         iam_it_init(it, bag, 0, ipd);
2838
2839         rc = iam_it_get(it, (struct iam_key *)key);
2840         if (rc >= 0) {
2841                 if (S_ISDIR(obj->oo_inode->i_mode))
2842                         iam_rec = (struct iam_rec *)oti->oti_ldp;
2843                 else
2844                         iam_rec = (struct iam_rec *) rec;
2845
2846                 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
2847                 if (S_ISDIR(obj->oo_inode->i_mode))
2848                         osd_fid_unpack((struct lu_fid *) rec,
2849                                        (struct osd_fid_pack *)iam_rec);
2850         }
2851         iam_it_put(it);
2852         iam_it_fini(it);
2853         osd_ipd_put(env, bag, ipd);
2854
2855         LINVRNT(osd_invariant(obj));
2856
2857         RETURN(rc);
2858 }
2859
2860 static int osd_index_declare_iam_insert(const struct lu_env *env,
2861                                         struct dt_object *dt,
2862                                         const struct dt_rec *rec,
2863                                         const struct dt_key *key,
2864                                         struct thandle *handle)
2865 {
2866         struct osd_thandle *oh;
2867
2868         LASSERT(dt_object_exists(dt));
2869         LASSERT(handle != NULL);
2870
2871         oh = container_of0(handle, struct osd_thandle, ot_super);
2872         LASSERT(oh->ot_handle == NULL);
2873
2874         OSD_DECLARE_OP(oh, insert);
2875         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_INSERT];
2876
2877         return 0;
2878 }
2879
2880 /**
2881  *      Inserts (key, value) pair in \a dt index object.
2882  *
2883  *      \param  dt      osd index object
2884  *      \param  key     key for index
2885  *      \param  rec     record reference
2886  *      \param  th      transaction handler
2887  *
2888  *      \retval  0  success
2889  *      \retval -ve failure
2890  */
2891 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
2892                                 const struct dt_rec *rec,
2893                                 const struct dt_key *key, struct thandle *th,
2894                                 struct lustre_capa *capa, int ignore_quota)
2895 {
2896         struct osd_object     *obj = osd_dt_obj(dt);
2897         struct iam_path_descr *ipd;
2898         struct osd_thandle    *oh;
2899         struct iam_container  *bag = &obj->oo_dir->od_container;
2900 #ifdef HAVE_QUOTA_SUPPORT
2901         cfs_cap_t              save = cfs_curproc_cap_pack();
2902 #endif
2903         struct osd_thread_info *oti = osd_oti_get(env);
2904         struct iam_rec         *iam_rec = (struct iam_rec *)oti->oti_ldp;
2905         int                     rc;
2906
2907         ENTRY;
2908
2909         LINVRNT(osd_invariant(obj));
2910         LASSERT(dt_object_exists(dt));
2911         LASSERT(bag->ic_object == obj->oo_inode);
2912         LASSERT(th != NULL);
2913
2914         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
2915                 return -EACCES;
2916
2917         OSD_EXEC_OP(th, insert);
2918
2919         ipd = osd_idx_ipd_get(env, bag);
2920         if (unlikely(ipd == NULL))
2921                 RETURN(-ENOMEM);
2922
2923         oh = container_of0(th, struct osd_thandle, ot_super);
2924         LASSERT(oh->ot_handle != NULL);
2925         LASSERT(oh->ot_handle->h_transaction != NULL);
2926 #ifdef HAVE_QUOTA_SUPPORT
2927         if (ignore_quota)
2928                 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
2929         else
2930                 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
2931 #endif
2932         if (S_ISDIR(obj->oo_inode->i_mode))
2933                 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
2934         else
2935                 iam_rec = (struct iam_rec *) rec;
2936         rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
2937                         iam_rec, ipd);
2938 #ifdef HAVE_QUOTA_SUPPORT
2939         cfs_curproc_cap_unpack(save);
2940 #endif
2941         osd_ipd_put(env, bag, ipd);
2942         LINVRNT(osd_invariant(obj));
2943         RETURN(rc);
2944 }
2945
2946 /**
2947  * Calls ldiskfs_add_entry() to add directory entry
2948  * into the directory. This is required for
2949  * interoperability mode (b11826)
2950  *
2951  * \retval   0, on success
2952  * \retval -ve, on error
2953  */
2954 static int __osd_ea_add_rec(struct osd_thread_info *info,
2955                             struct osd_object *pobj, struct inode  *cinode,
2956                             const char *name, const struct dt_rec *fid,
2957                             struct htree_lock *hlock, struct thandle *th)
2958 {
2959         struct ldiskfs_dentry_param *ldp;
2960         struct dentry               *child;
2961         struct osd_thandle          *oth;
2962         int                          rc;
2963
2964         oth = container_of(th, struct osd_thandle, ot_super);
2965         LASSERT(oth->ot_handle != NULL);
2966         LASSERT(oth->ot_handle->h_transaction != NULL);
2967
2968         child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
2969
2970         /* XXX: remove fid_is_igif() check here.
2971          * IGIF check is just to handle insertion of .. when it is 'ROOT',
2972          * it is IGIF now but needs FID in dir entry as well for readdir
2973          * to work.
2974          * LU-838 should fix that and remove fid_is_igif() check */
2975         if (fid_is_igif((struct lu_fid *)fid) ||
2976             fid_is_norm((struct lu_fid *)fid)) {
2977                 ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
2978                 osd_get_ldiskfs_dirent_param(ldp, fid);
2979                 child->d_fsdata = (void *)ldp;
2980         } else {
2981                 child->d_fsdata = NULL;
2982         }
2983         rc = osd_ldiskfs_add_entry(oth->ot_handle, child, cinode, hlock);
2984
2985         RETURN(rc);
2986 }
2987
2988 /**
2989  * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
2990  * into the directory.Also sets flags into osd object to
2991  * indicate dot and dotdot are created. This is required for
2992  * interoperability mode (b11826)
2993  *
2994  * \param dir   directory for dot and dotdot fixup.
2995  * \param obj   child object for linking
2996  *
2997  * \retval   0, on success
2998  * \retval -ve, on error
2999  */
3000 static int osd_add_dot_dotdot(struct osd_thread_info *info,
3001                               struct osd_object *dir,
3002                               struct inode  *parent_dir, const char *name,
3003                               const struct dt_rec *dot_fid,
3004                               const struct dt_rec *dot_dot_fid,
3005                               struct thandle *th)
3006 {
3007         struct inode                *inode = dir->oo_inode;
3008         struct ldiskfs_dentry_param *dot_ldp;
3009         struct ldiskfs_dentry_param *dot_dot_ldp;
3010         struct osd_thandle          *oth;
3011         int result = 0;
3012
3013         oth = container_of(th, struct osd_thandle, ot_super);
3014         LASSERT(oth->ot_handle->h_transaction != NULL);
3015         LASSERT(S_ISDIR(dir->oo_inode->i_mode));
3016
3017         if (strcmp(name, dot) == 0) {
3018                 if (dir->oo_compat_dot_created) {
3019                         result = -EEXIST;
3020                 } else {
3021                         LASSERT(inode == parent_dir);
3022                         dir->oo_compat_dot_created = 1;
3023                         result = 0;
3024                 }
3025         } else if(strcmp(name, dotdot) == 0) {
3026                 dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3027                 dot_dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp2;
3028
3029                 if (!dir->oo_compat_dot_created)
3030                         return -EINVAL;
3031                 if (!fid_is_igif((struct lu_fid *)dot_fid)) {
3032                         osd_get_ldiskfs_dirent_param(dot_ldp, dot_fid);
3033                         osd_get_ldiskfs_dirent_param(dot_dot_ldp, dot_dot_fid);
3034                 } else {
3035                         dot_ldp = NULL;
3036                         dot_dot_ldp = NULL;
3037                 }
3038                 /* in case of rename, dotdot is already created */
3039                 if (dir->oo_compat_dotdot_created) {
3040                         return __osd_ea_add_rec(info, dir, parent_dir, name,
3041                                                 dot_dot_fid, NULL, th);
3042                 }
3043
3044                 result = ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir,
3045                                                 inode, dot_ldp, dot_dot_ldp);
3046                 if (result == 0)
3047                        dir->oo_compat_dotdot_created = 1;
3048         }
3049
3050         return result;
3051 }
3052
3053
3054 /**
3055  * It will call the appropriate osd_add* function and return the
3056  * value, return by respective functions.
3057  */
3058 static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj,
3059                           struct inode *cinode, const char *name,
3060                           const struct dt_rec *fid, struct thandle *th)
3061 {
3062         struct osd_thread_info *info   = osd_oti_get(env);
3063         struct htree_lock      *hlock;
3064         int                     rc;
3065
3066         hlock = pobj->oo_hl_head != NULL ? info->oti_hlock : NULL;
3067
3068         if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
3069                                                    name[2] =='\0'))) {
3070                 if (hlock != NULL) {
3071                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3072                                            pobj->oo_inode, 0);
3073                 } else {
3074                         cfs_down_write(&pobj->oo_ext_idx_sem);
3075                 }
3076                 rc = osd_add_dot_dotdot(info, pobj, cinode, name,
3077                      (struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
3078                                         fid, th);
3079         } else {
3080                 if (hlock != NULL) {
3081                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3082                                            pobj->oo_inode, LDISKFS_HLOCK_ADD);
3083                 } else {
3084                         cfs_down_write(&pobj->oo_ext_idx_sem);
3085                 }
3086
3087                 rc = __osd_ea_add_rec(info, pobj, cinode, name, fid,
3088                                       hlock, th);
3089         }
3090         if (hlock != NULL)
3091                 ldiskfs_htree_unlock(hlock);
3092         else
3093                 cfs_up_write(&pobj->oo_ext_idx_sem);
3094
3095         return rc;
3096 }
3097
3098 /**
3099  * Calls ->lookup() to find dentry. From dentry get inode and
3100  * read inode's ea to get fid. This is required for  interoperability
3101  * mode (b11826)
3102  *
3103  * \retval   0, on success
3104  * \retval -ve, on error
3105  */
3106 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
3107                              struct dt_rec *rec, const struct dt_key *key)
3108 {
3109         struct inode               *dir    = obj->oo_inode;
3110         struct dentry              *dentry;
3111         struct ldiskfs_dir_entry_2 *de;
3112         struct buffer_head         *bh;
3113         struct lu_fid              *fid = (struct lu_fid *) rec;
3114         struct htree_lock          *hlock = NULL;
3115         int                         ino;
3116         int                         rc;
3117
3118         LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
3119
3120         dentry = osd_child_dentry_get(env, obj,
3121                                       (char *)key, strlen((char *)key));
3122
3123         if (obj->oo_hl_head != NULL) {
3124                 hlock = osd_oti_get(env)->oti_hlock;
3125                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3126                                    dir, LDISKFS_HLOCK_LOOKUP);
3127         } else {
3128                 cfs_down_read(&obj->oo_ext_idx_sem);
3129         }
3130
3131         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
3132         if (bh) {
3133                 ino = le32_to_cpu(de->inode);
3134                 rc = osd_get_fid_from_dentry(de, rec);
3135
3136                 /* done with de, release bh */
3137                 brelse(bh);
3138                 if (rc != 0)
3139                         rc = osd_ea_fid_get(env, obj, ino, fid);
3140         } else {
3141                 rc = -ENOENT;
3142         }
3143
3144         if (hlock != NULL)
3145                 ldiskfs_htree_unlock(hlock);
3146         else
3147                 cfs_up_read(&obj->oo_ext_idx_sem);
3148         RETURN (rc);
3149 }
3150
3151 /**
3152  * Find the osd object for given fid.
3153  *
3154  * \param fid need to find the osd object having this fid
3155  *
3156  * \retval osd_object on success
3157  * \retval        -ve on error
3158  */
3159 struct osd_object *osd_object_find(const struct lu_env *env,
3160                                    struct dt_object *dt,
3161                                    const struct lu_fid *fid)
3162 {
3163         struct lu_device  *ludev = dt->do_lu.lo_dev;
3164         struct osd_object *child = NULL;
3165         struct lu_object  *luch;
3166         struct lu_object  *lo;
3167
3168         luch = lu_object_find(env, ludev, fid, NULL);
3169         if (!IS_ERR(luch)) {
3170                 if (lu_object_exists(luch)) {
3171                         lo = lu_object_locate(luch->lo_header, ludev->ld_type);
3172                         if (lo != NULL)
3173                                 child = osd_obj(lo);
3174                         else
3175                                 LU_OBJECT_DEBUG(D_ERROR, env, luch,
3176                                                 "lu_object can't be located"
3177                                                 ""DFID"\n", PFID(fid));
3178
3179                         if (child == NULL) {
3180                                 lu_object_put(env, luch);
3181                                 CERROR("Unable to get osd_object\n");
3182                                 child = ERR_PTR(-ENOENT);
3183                         }
3184                 } else {
3185                         LU_OBJECT_DEBUG(D_ERROR, env, luch,
3186                                         "lu_object does not exists "DFID"\n",
3187                                         PFID(fid));
3188                         child = ERR_PTR(-ENOENT);
3189                 }
3190         } else
3191                 child = (void *)luch;
3192
3193         return child;
3194 }
3195
3196 /**
3197  * Put the osd object once done with it.
3198  *
3199  * \param obj osd object that needs to be put
3200  */
3201 static inline void osd_object_put(const struct lu_env *env,
3202                                   struct osd_object *obj)
3203 {
3204         lu_object_put(env, &obj->oo_dt.do_lu);
3205 }
3206
3207 static int osd_index_declare_ea_insert(const struct lu_env *env,
3208                                        struct dt_object *dt,
3209                                        const struct dt_rec *rec,
3210                                        const struct dt_key *key,
3211                                        struct thandle *handle)
3212 {
3213         struct osd_thandle *oh;
3214
3215         LASSERT(dt_object_exists(dt));
3216         LASSERT(handle != NULL);
3217
3218         oh = container_of0(handle, struct osd_thandle, ot_super);
3219         LASSERT(oh->ot_handle == NULL);
3220
3221         OSD_DECLARE_OP(oh, insert);
3222         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_INSERT];
3223
3224         LASSERT(osd_dt_obj(dt)->oo_inode);
3225         osd_declare_qid(dt, oh, USRQUOTA, osd_dt_obj(dt)->oo_inode->i_uid,
3226                         osd_dt_obj(dt)->oo_inode);
3227         osd_declare_qid(dt, oh, GRPQUOTA, osd_dt_obj(dt)->oo_inode->i_gid,
3228                         osd_dt_obj(dt)->oo_inode);
3229
3230         return 0;
3231 }
3232
3233 /**
3234  * Index add function for interoperability mode (b11826).
3235  * It will add the directory entry.This entry is needed to
3236  * maintain name->fid mapping.
3237  *
3238  * \param key it is key i.e. file entry to be inserted
3239  * \param rec it is value of given key i.e. fid
3240  *
3241  * \retval   0, on success
3242  * \retval -ve, on error
3243  */
3244 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
3245                                const struct dt_rec *rec,
3246                                const struct dt_key *key, struct thandle *th,
3247                                struct lustre_capa *capa, int ignore_quota)
3248 {
3249         struct osd_object *obj   = osd_dt_obj(dt);
3250         struct lu_fid     *fid   = (struct lu_fid *) rec;
3251         const char        *name  = (const char *)key;
3252         struct osd_object *child;
3253 #ifdef HAVE_QUOTA_SUPPORT
3254         cfs_cap_t          save  = cfs_curproc_cap_pack();
3255 #endif
3256         int                rc;
3257
3258         ENTRY;
3259
3260         LASSERT(osd_invariant(obj));
3261         LASSERT(dt_object_exists(dt));
3262         LASSERT(th != NULL);
3263
3264         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3265                 RETURN(-EACCES);
3266
3267         child = osd_object_find(env, dt, fid);