lustre/osd-zfs/osd_object.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30 /*
  31  * Copyright (c) 2012, Intel Corporation.
  32  * Use is subject to license terms.
  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-zfs/osd_object.c
  39  *
  40  * Author: Alex Zhuravlev <bzzz@whamcloud.com>
  41  * Author: Mike Pershin <tappro@whamcloud.com>
  42  * Author: Johann Lombardi <johann@whamcloud.com>
  43  */
  44
  45 #ifndef EXPORT_SYMTAB
  46 # define EXPORT_SYMTAB
  47 #endif
  48 #define DEBUG_SUBSYSTEM S_OSD
  49
  50 #include <lustre_ver.h>
  51 #include <libcfs/libcfs.h>
  52 #include <lustre_fsfilt.h>
  53 #include <obd_support.h>
  54 #include <lustre_net.h>
  55 #include <obd.h>
  56 #include <obd_class.h>
  57 #include <lustre_disk.h>
  58 #include <lustre_fid.h>
  59
  60 #include "osd_internal.h"
  61
  62 #include <sys/dnode.h>
  63 #include <sys/dbuf.h>
  64 #include <sys/spa.h>
  65 #include <sys/stat.h>
  66 #include <sys/zap.h>
  67 #include <sys/spa_impl.h>
  68 #include <sys/zfs_znode.h>
  69 #include <sys/dmu_tx.h>
  70 #include <sys/dmu_objset.h>
  71 #include <sys/dsl_prop.h>
  72 #include <sys/sa_impl.h>
  73 #include <sys/txg.h>
  74
  75 static char *osd_obj_tag = "osd_object";
  76
  77 static struct dt_object_operations osd_obj_ops;
  78 static struct lu_object_operations osd_lu_obj_ops;
  79 extern struct dt_body_operations osd_body_ops;
  80 static struct dt_object_operations osd_obj_otable_it_ops;
  81
  82 extern cfs_mem_cache_t *osd_object_kmem;
  83
  84 static void
  85 osd_object_sa_fini(struct osd_object *obj)
  86 {
  87         if (obj->oo_sa_hdl) {
  88                 sa_handle_destroy(obj->oo_sa_hdl);
  89                 obj->oo_sa_hdl = NULL;
  90         }
  91 }
  92
  93 static int
  94 osd_object_sa_init(struct osd_object *obj, udmu_objset_t *uos)
  95 {
  96         int rc;
  97
  98         LASSERT(obj->oo_sa_hdl == NULL);
  99         LASSERT(obj->oo_db != NULL);
 100
 101         rc = -sa_handle_get(uos->os, obj->oo_db->db_object, obj,
 102                             SA_HDL_PRIVATE, &obj->oo_sa_hdl);
 103         if (rc)
 104                 return rc;
 105
 106         /* Cache the xattr object id, valid for the life of the object */
 107         rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(uos), &obj->oo_xattr, 8);
 108         if (rc == -ENOENT) {
 109                 obj->oo_xattr = ZFS_NO_OBJECT;
 110                 rc = 0;
 111         } else if (rc) {
 112                 osd_object_sa_fini(obj);
 113         }
 114
 115         return rc;
 116 }
 117
 118 /*
 119  * Add object to list of dirty objects in tx handle.
 120  */
 121 static void
 122 osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
 123 {
 124         if (!cfs_list_empty(&obj->oo_sa_linkage))
 125                 return;
 126
 127         down(&oh->ot_sa_lock);
 128         write_lock(&obj->oo_attr_lock);
 129         if (likely(cfs_list_empty(&obj->oo_sa_linkage)))
 130                 cfs_list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
 131         write_unlock(&obj->oo_attr_lock);
 132         up(&oh->ot_sa_lock);
 133 }
 134
 135 /*
 136  * Release spill block dbuf hold for all dirty SAs.
 137  */
 138 void osd_object_sa_dirty_rele(struct osd_thandle *oh)
 139 {
 140         struct osd_object *obj;
 141
 142         down(&oh->ot_sa_lock);
 143         while (!cfs_list_empty(&oh->ot_sa_list)) {
 144                 obj = cfs_list_entry(oh->ot_sa_list.next,
 145                                      struct osd_object, oo_sa_linkage);
 146                 sa_spill_rele(obj->oo_sa_hdl);
 147                 write_lock(&obj->oo_attr_lock);
 148                 cfs_list_del_init(&obj->oo_sa_linkage);
 149                 write_unlock(&obj->oo_attr_lock);
 150         }
 151         up(&oh->ot_sa_lock);
 152 }
 153
 154 /*
 155  * Update the SA and add the object to the dirty list.
 156  */
 157 int osd_object_sa_update(struct osd_object *obj, sa_attr_type_t type,
 158                          void *buf, uint32_t buflen, struct osd_thandle *oh)
 159 {
 160         int rc;
 161
 162         LASSERT(obj->oo_sa_hdl != NULL);
 163         LASSERT(oh->ot_tx != NULL);
 164
 165         rc = -sa_update(obj->oo_sa_hdl, type, buf, buflen, oh->ot_tx);
 166         osd_object_sa_dirty_add(obj, oh);
 167
 168         return rc;
 169 }
 170
 171 /*
 172  * Bulk update the SA and add the object to the dirty list.
 173  */
 174 static int
 175 osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 176                           int count, struct osd_thandle *oh)
 177 {
 178         int rc;
 179
 180         LASSERT(obj->oo_sa_hdl != NULL);
 181         LASSERT(oh->ot_tx != NULL);
 182
 183         rc = -sa_bulk_update(obj->oo_sa_hdl, attrs, count, oh->ot_tx);
 184         osd_object_sa_dirty_add(obj, oh);
 185
 186         return rc;
 187 }
 188
 189 /*
 190  * Retrieve the attributes of a DMU object
 191  */
 192 int __osd_object_attr_get(const struct lu_env *env, udmu_objset_t *uos,
 193                           struct osd_object *obj, struct lu_attr *la)
 194 {
 195         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
 196         sa_handle_t     *sa_hdl;
 197         sa_bulk_attr_t  *bulk;
 198         int              cnt = 0;
 199         int              rc;
 200         ENTRY;
 201
 202         LASSERT(obj->oo_db != NULL);
 203
 204         rc = -sa_handle_get(uos->os, obj->oo_db->db_object, NULL,
 205                             SA_HDL_PRIVATE, &sa_hdl);
 206         if (rc)
 207                 RETURN(rc);
 208
 209         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 9);
 210         if (bulk == NULL)
 211                 GOTO(out_sa, rc = -ENOMEM);
 212
 213         la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
 214                         LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
 215
 216         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(uos), NULL, osa->atime, 16);
 217         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(uos), NULL, osa->mtime, 16);
 218         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(uos), NULL, osa->ctime, 16);
 219         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(uos), NULL, &osa->mode, 8);
 220         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(uos), NULL, &osa->size, 8);
 221         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(uos), NULL, &osa->nlink, 8);
 222         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(uos), NULL, &osa->uid, 8);
 223         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(uos), NULL, &osa->gid, 8);
 224         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(uos), NULL, &osa->flags, 8);
 225
 226         rc = -sa_bulk_lookup(sa_hdl, bulk, cnt);
 227         if (rc)
 228                 GOTO(out_bulk, rc);
 229
 230         la->la_atime = osa->atime[0];
 231         la->la_mtime = osa->mtime[0];
 232         la->la_ctime = osa->ctime[0];
 233         la->la_mode = osa->mode;
 234         la->la_uid = osa->uid;
 235         la->la_gid = osa->gid;
 236         la->la_nlink = osa->nlink;
 237         la->la_flags = osa->flags;
 238         la->la_size = osa->size;
 239
 240         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
 241                 rc = -sa_lookup(sa_hdl, SA_ZPL_RDEV(uos), &osa->rdev, 8);
 242                 if (rc)
 243                         GOTO(out_bulk, rc);
 244                 la->la_rdev = osa->rdev;
 245                 la->la_valid |= LA_RDEV;
 246         }
 247 out_bulk:
 248         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 9);
 249 out_sa:
 250         sa_handle_destroy(sa_hdl);
 251
 252         RETURN(rc);
 253 }
 254
 255 int __osd_obj2dbuf(const struct lu_env *env, objset_t *os,
 256                    uint64_t oid, dmu_buf_t **dbp, void *tag)
 257 {
 258         dmu_object_info_t *doi = &osd_oti_get(env)->oti_doi;
 259         int rc;
 260
 261         LASSERT(tag);
 262
 263         rc = -sa_buf_hold(os, oid, tag, dbp);
 264         if (rc)
 265                 return rc;
 266
 267         dmu_object_info_from_db(*dbp, doi);
 268         if (unlikely (oid != DMU_USERUSED_OBJECT &&
 269             oid != DMU_GROUPUSED_OBJECT && doi->doi_bonus_type != DMU_OT_SA)) {
 270                 sa_buf_rele(*dbp, tag);
 271                 *dbp = NULL;
 272                 return -EINVAL;
 273         }
 274
 275         LASSERT(*dbp);
 276         LASSERT((*dbp)->db_object == oid);
 277         LASSERT((*dbp)->db_offset == -1);
 278         LASSERT((*dbp)->db_data != NULL);
 279
 280         return 0;
 281 }
 282
 283 /*
 284  * Concurrency: no concurrent access is possible that early in object
 285  * life-cycle.
 286  */
 287 struct lu_object *osd_object_alloc(const struct lu_env *env,
 288                                    const struct lu_object_header *hdr,
 289                                    struct lu_device *d)
 290 {
 291         struct osd_object *mo;
 292
 293         OBD_SLAB_ALLOC_PTR_GFP(mo, osd_object_kmem, CFS_ALLOC_IO);
 294         if (mo != NULL) {
 295                 struct lu_object *l;
 296
 297                 l = &mo->oo_dt.do_lu;
 298                 dt_object_init(&mo->oo_dt, NULL, d);
 299                 mo->oo_dt.do_ops = &osd_obj_ops;
 300                 l->lo_ops = &osd_lu_obj_ops;
 301                 CFS_INIT_LIST_HEAD(&mo->oo_sa_linkage);
 302                 init_rwsem(&mo->oo_sem);
 303                 sema_init(&mo->oo_guard, 1);
 304                 rwlock_init(&mo->oo_attr_lock);
 305                 return l;
 306         } else {
 307                 return NULL;
 308         }
 309 }
 310
 311 /*
 312  * Concurrency: shouldn't matter.
 313  */
 314 int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 315 {
 316         struct osd_device       *osd = osd_obj2dev(obj);
 317         udmu_objset_t           *uos = &osd->od_objset;
 318         const struct lu_fid     *fid  = lu_object_fid(&obj->oo_dt.do_lu);
 319         int                      rc = 0;
 320         ENTRY;
 321
 322         if (obj->oo_db == NULL)
 323                 RETURN(0);
 324
 325         /* object exist */
 326
 327         rc = osd_object_sa_init(obj, uos);
 328         if (rc)
 329                 RETURN(rc);
 330
 331         /* cache attrs in object */
 332         rc = __osd_object_attr_get(env, &osd->od_objset,
 333                                    obj, &obj->oo_attr);
 334         if (rc)
 335                 RETURN(rc);
 336
 337         if (likely(!fid_is_acct(fid)))
 338                 /* no body operations for accounting objects */
 339                 obj->oo_dt.do_body_ops = &osd_body_ops;
 340
 341         /*
 342          * initialize object before marking it existing
 343          */
 344         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
 345
 346         cfs_mb();
 347         obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
 348
 349         RETURN(0);
 350 }
 351
 352 /*
 353  * Concurrency: no concurrent access is possible that early in object
 354  * life-cycle.
 355  */
 356 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 357                            const struct lu_object_conf *conf)
 358 {
 359         struct osd_object       *obj = osd_obj(l);
 360         struct osd_device       *osd = osd_obj2dev(obj);
 361         uint64_t                 oid;
 362         int                      rc;
 363         ENTRY;
 364
 365         LASSERT(osd_invariant(obj));
 366
 367         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 368                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 369                 l->lo_header->loh_attr |= LOHA_EXISTS;
 370                 RETURN(0);
 371         }
 372
 373         rc = osd_fid_lookup(env, osd, lu_object_fid(l), &oid);
 374         if (rc == 0) {
 375                 LASSERT(obj->oo_db == NULL);
 376                 rc = __osd_obj2dbuf(env, osd->od_objset.os, oid,
 377                                         &obj->oo_db, osd_obj_tag);
 378                 if (rc == 0) {
 379                         LASSERT(obj->oo_db);
 380                         rc = osd_object_init0(env, obj);
 381                 } else {
 382                         CERROR("%s: lookup "DFID"/"LPX64" failed: rc = %d\n",
 383                                osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
 384                 }
 385         }
 386         LASSERT(osd_invariant(obj));
 387         RETURN(rc);
 388 }
 389
 390 /*
 391  * Concurrency: no concurrent access is possible that late in object
 392  * life-cycle.
 393  */
 394 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 395 {
 396         struct osd_object *obj = osd_obj(l);
 397
 398         LASSERT(osd_invariant(obj));
 399
 400         dt_object_fini(&obj->oo_dt);
 401         OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
 402 }
 403
 404 static void __osd_declare_object_destroy(const struct lu_env *env,
 405                                          struct osd_object *obj,
 406                                          struct osd_thandle *oh)
 407 {
 408         struct osd_device       *osd = osd_obj2dev(obj);
 409         udmu_objset_t           *uos = &osd->od_objset;
 410         dmu_buf_t               *db = obj->oo_db;
 411         zap_attribute_t         *za = &osd_oti_get(env)->oti_za;
 412         uint64_t                 oid = db->db_object, xid;
 413         dmu_tx_t                *tx = oh->ot_tx;
 414         zap_cursor_t            *zc;
 415         int                      rc = 0;
 416
 417         dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
 418
 419         /* zap holding xattrs */
 420         if (obj->oo_xattr != ZFS_NO_OBJECT) {
 421                 oid = obj->oo_xattr;
 422
 423                 dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
 424
 425                 rc = -udmu_zap_cursor_init(&zc, uos, oid, 0);
 426                 if (rc)
 427                         goto out;
 428
 429                 while ((rc = -zap_cursor_retrieve(zc, za)) == 0) {
 430                         BUG_ON(za->za_integer_length != sizeof(uint64_t));
 431                         BUG_ON(za->za_num_integers != 1);
 432
 433                         rc = -zap_lookup(uos->os, obj->oo_xattr, za->za_name,
 434                                          sizeof(uint64_t), 1, &xid);
 435                         if (rc) {
 436                                 CERROR("%s: xattr lookup failed: rc = %d\n",
 437                                        osd->od_svname, rc);
 438                                 goto out_err;
 439                         }
 440                         dmu_tx_hold_free(tx, xid, 0, DMU_OBJECT_END);
 441
 442                         zap_cursor_advance(zc);
 443                 }
 444                 if (rc == -ENOENT)
 445                         rc = 0;
 446 out_err:
 447                 udmu_zap_cursor_fini(zc);
 448         }
 449 out:
 450         if (rc && tx->tx_err == 0)
 451                 tx->tx_err = -rc;
 452 }
 453
 454 static int osd_declare_object_destroy(const struct lu_env *env,
 455                                       struct dt_object *dt,
 456                                       struct thandle *th)
 457 {
 458         char                    *buf = osd_oti_get(env)->oti_str;
 459         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 460         struct osd_object       *obj = osd_dt_obj(dt);
 461         struct osd_device       *osd = osd_obj2dev(obj);
 462         struct osd_thandle      *oh;
 463         uint64_t                 zapid;
 464         int                      rc;
 465         ENTRY;
 466
 467         LASSERT(th != NULL);
 468         LASSERT(dt_object_exists(dt));
 469
 470         oh = container_of0(th, struct osd_thandle, ot_super);
 471         LASSERT(oh->ot_tx != NULL);
 472
 473         /* declare that we'll destroy the object */
 474         __osd_declare_object_destroy(env, obj, oh);
 475
 476         /* declare that we'll remove object from fid-dnode mapping */
 477         zapid = osd_get_name_n_idx(env, osd, fid, buf);
 478         dmu_tx_hold_bonus(oh->ot_tx, zapid);
 479         dmu_tx_hold_zap(oh->ot_tx, zapid, 0, buf);
 480
 481         /* declare that we'll remove object from inode accounting ZAPs */
 482         dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
 483         dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, 0, buf);
 484         dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
 485         dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, 0, buf);
 486
 487         /* one less inode */
 488         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 489                                obj->oo_attr.la_gid, -1, oh, false, NULL, false);
 490         if (rc)
 491                 RETURN(rc);
 492
 493         /* data to be truncated */
 494         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 495                                obj->oo_attr.la_gid, 0, oh, true, NULL, false);
 496         RETURN(rc);
 497 }
 498
 499 int __osd_object_free(udmu_objset_t *uos, uint64_t oid, dmu_tx_t *tx)
 500 {
 501         LASSERT(uos->objects != 0);
 502         spin_lock(&uos->lock);
 503         uos->objects--;
 504         spin_unlock(&uos->lock);
 505
 506         return -dmu_object_free(uos->os, oid, tx);
 507 }
 508
 509 /*
 510  * Delete a DMU object
 511  *
 512  * The transaction passed to this routine must have
 513  * dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END) called
 514  * and then assigned to a transaction group.
 515  *
 516  * This will release db and set it to NULL to prevent further dbuf releases.
 517  */
 518 static int __osd_object_destroy(const struct lu_env *env,
 519                                 struct osd_object *obj,
 520                                 dmu_tx_t *tx, void *tag)
 521 {
 522         struct osd_device       *osd = osd_obj2dev(obj);
 523         udmu_objset_t           *uos = &osd->od_objset;
 524         uint64_t                 xid;
 525         zap_attribute_t         *za = &osd_oti_get(env)->oti_za;
 526         zap_cursor_t            *zc;
 527         int                      rc;
 528
 529         /* Assert that the transaction has been assigned to a
 530            transaction group. */
 531         LASSERT(tx->tx_txg != 0);
 532
 533         /* zap holding xattrs */
 534         if (obj->oo_xattr != ZFS_NO_OBJECT) {
 535                 rc = -udmu_zap_cursor_init(&zc, uos, obj->oo_xattr, 0);
 536                 if (rc)
 537                         return rc;
 538                 while ((rc = -zap_cursor_retrieve(zc, za)) == 0) {
 539                         BUG_ON(za->za_integer_length != sizeof(uint64_t));
 540                         BUG_ON(za->za_num_integers != 1);
 541
 542                         rc = -zap_lookup(uos->os, obj->oo_xattr, za->za_name,
 543                                          sizeof(uint64_t), 1, &xid);
 544                         if (rc) {
 545                                 CERROR("%s: lookup xattr %s failed: rc = %d\n",
 546                                        osd->od_svname, za->za_name, rc);
 547                                 continue;
 548                         }
 549                         rc = __osd_object_free(uos, xid, tx);
 550                         if (rc)
 551                                 CERROR("%s: fetch xattr %s failed: rc = %d\n",
 552                                        osd->od_svname, za->za_name, rc);
 553                         zap_cursor_advance(zc);
 554                 }
 555                 udmu_zap_cursor_fini(zc);
 556
 557                 rc = __osd_object_free(uos, obj->oo_xattr, tx);
 558                 if (rc)
 559                         CERROR("%s: freeing xattr failed: rc = %d\n",
 560                                osd->od_svname, rc);
 561         }
 562
 563         return __osd_object_free(uos, obj->oo_db->db_object, tx);
 564 }
 565
 566 static int osd_object_destroy(const struct lu_env *env,
 567                               struct dt_object *dt,
 568                               struct thandle *th)
 569 {
 570         char                    *buf = osd_oti_get(env)->oti_str;
 571         struct osd_object       *obj = osd_dt_obj(dt);
 572         struct osd_device       *osd = osd_obj2dev(obj);
 573         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 574         struct osd_thandle      *oh;
 575         int                      rc;
 576         uint64_t                 zapid;
 577         ENTRY;
 578
 579         LASSERT(obj->oo_db != NULL);
 580         LASSERT(dt_object_exists(dt));
 581         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
 582
 583         oh = container_of0(th, struct osd_thandle, ot_super);
 584         LASSERT(oh != NULL);
 585         LASSERT(oh->ot_tx != NULL);
 586
 587         zapid = osd_get_name_n_idx(env, osd, fid, buf);
 588
 589         /* remove obj ref from index dir (it depends) */
 590         rc = -zap_remove(osd->od_objset.os, zapid, buf, oh->ot_tx);
 591         if (rc) {
 592                 CERROR("%s: zap_remove() failed: rc = %d\n",
 593                        osd->od_svname, rc);
 594                 GOTO(out, rc);
 595         }
 596
 597         /* Remove object from inode accounting. It is not fatal for the destroy
 598          * operation if something goes wrong while updating accounting, but we
 599          * still log an error message to notify the administrator */
 600         rc = -zap_increment_int(osd->od_objset.os, osd->od_iusr_oid,
 601                         obj->oo_attr.la_uid, -1, oh->ot_tx);
 602         if (rc)
 603                 CERROR("%s: failed to remove "DFID" from accounting ZAP for usr"
 604                         " %d: rc = %d\n", osd->od_svname, PFID(fid),
 605                         obj->oo_attr.la_uid, rc);
 606         rc = -zap_increment_int(osd->od_objset.os, osd->od_igrp_oid,
 607                                 obj->oo_attr.la_gid, -1, oh->ot_tx);
 608         if (rc)
 609                 CERROR("%s: failed to remove "DFID" from accounting ZAP for grp"
 610                         " %d: rc = %d\n", osd->od_svname, PFID(fid),
 611                         obj->oo_attr.la_gid, rc);
 612
 613         /* kill object */
 614         rc = __osd_object_destroy(env, obj, oh->ot_tx, osd_obj_tag);
 615         if (rc) {
 616                 CERROR("%s: __osd_object_destroy() failed: rc = %d\n",
 617                        osd->od_svname, rc);
 618                 GOTO(out, rc);
 619         }
 620
 621 out:
 622         /* not needed in the cache anymore */
 623         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
 624
 625         RETURN (0);
 626 }
 627
 628 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 629 {
 630         struct osd_object *obj = osd_obj(l);
 631
 632         if (obj->oo_db != NULL) {
 633                 osd_object_sa_fini(obj);
 634                 if (obj->oo_sa_xattr) {
 635                         nvlist_free(obj->oo_sa_xattr);
 636                         obj->oo_sa_xattr = NULL;
 637                 }
 638                 sa_buf_rele(obj->oo_db, osd_obj_tag);
 639                 cfs_list_del(&obj->oo_sa_linkage);
 640                 obj->oo_db = NULL;
 641         }
 642 }
 643
 644 /*
 645  * Concurrency: ->loo_object_release() is called under site spin-lock.
 646  */
 647 static void osd_object_release(const struct lu_env *env,
 648                                struct lu_object *l)
 649 {
 650 }
 651
 652 /*
 653  * Concurrency: shouldn't matter.
 654  */
 655 static int osd_object_print(const struct lu_env *env, void *cookie,
 656                             lu_printer_t p, const struct lu_object *l)
 657 {
 658         struct osd_object *o = osd_obj(l);
 659
 660         return (*p)(env, cookie, LUSTRE_OSD_ZFS_NAME"-object@%p", o);
 661 }
 662
 663 static void osd_object_read_lock(const struct lu_env *env,
 664                                  struct dt_object *dt, unsigned role)
 665 {
 666         struct osd_object *obj = osd_dt_obj(dt);
 667
 668         LASSERT(osd_invariant(obj));
 669
 670         down_read(&obj->oo_sem);
 671 }
 672
 673 static void osd_object_write_lock(const struct lu_env *env,
 674                                   struct dt_object *dt, unsigned role)
 675 {
 676         struct osd_object *obj = osd_dt_obj(dt);
 677
 678         LASSERT(osd_invariant(obj));
 679
 680         down_write(&obj->oo_sem);
 681 }
 682
 683 static void osd_object_read_unlock(const struct lu_env *env,
 684                                    struct dt_object *dt)
 685 {
 686         struct osd_object *obj = osd_dt_obj(dt);
 687
 688         LASSERT(osd_invariant(obj));
 689         up_read(&obj->oo_sem);
 690 }
 691
 692 static void osd_object_write_unlock(const struct lu_env *env,
 693                                     struct dt_object *dt)
 694 {
 695         struct osd_object *obj = osd_dt_obj(dt);
 696
 697         LASSERT(osd_invariant(obj));
 698         up_write(&obj->oo_sem);
 699 }
 700
 701 static int osd_object_write_locked(const struct lu_env *env,
 702                                    struct dt_object *dt)
 703 {
 704         struct osd_object *obj = osd_dt_obj(dt);
 705         int rc = 1;
 706
 707         LASSERT(osd_invariant(obj));
 708
 709         if (down_write_trylock(&obj->oo_sem)) {
 710                 rc = 0;
 711                 up_write(&obj->oo_sem);
 712         }
 713         return rc;
 714 }
 715
 716 static int osd_attr_get(const struct lu_env *env,
 717                         struct dt_object *dt,
 718                         struct lu_attr *attr,
 719                         struct lustre_capa *capa)
 720 {
 721         struct osd_object       *obj = osd_dt_obj(dt);
 722         uint64_t                 blocks;
 723         uint32_t                 blksize;
 724
 725         LASSERT(dt_object_exists(dt));
 726         LASSERT(osd_invariant(obj));
 727         LASSERT(obj->oo_db);
 728
 729         read_lock(&obj->oo_attr_lock);
 730         *attr = obj->oo_attr;
 731         read_unlock(&obj->oo_attr_lock);
 732
 733         /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
 734          * from within sa_object_size() can block on a mutex, so
 735          * we can't call sa_object_size() holding rwlock */
 736         sa_object_size(obj->oo_sa_hdl, &blksize, &blocks);
 737         /* we do not control size of indices, so always calculate
 738          * it from number of blocks reported by DMU */
 739         if (S_ISDIR(attr->la_mode))
 740                 attr->la_size = 512 * blocks;
 741         /* Block size may be not set; suggest maximal I/O transfers. */
 742         if (blksize == 0)
 743                 blksize = 1ULL << SPA_MAXBLOCKSHIFT;
 744
 745         attr->la_blksize = blksize;
 746         attr->la_blocks = blocks;
 747         attr->la_valid |= LA_BLOCKS | LA_BLKSIZE;
 748
 749         return 0;
 750 }
 751
 752 /* Simple wrapper on top of qsd API which implement quota transfer for osd
 753  * setattr needs. As a reminder, only the root user can change ownership of
 754  * a file, that's why EDQUOT & EINPROGRESS errors are discarded */
 755 static inline int qsd_transfer(const struct lu_env *env,
 756                                struct qsd_instance *qsd,
 757                                struct lquota_trans *trans, int qtype,
 758                                __u64 orig_id, __u64 new_id, __u64 bspace,
 759                                struct lquota_id_info *qi)
 760 {
 761         int     rc;
 762
 763         if (unlikely(qsd == NULL))
 764                 return 0;
 765
 766         LASSERT(qtype >= 0 && qtype < MAXQUOTAS);
 767         qi->lqi_type = qtype;
 768
 769         /* inode accounting */
 770         qi->lqi_is_blk = false;
 771
 772         /* one more inode for the new owner ... */
 773         qi->lqi_id.qid_uid = new_id;
 774         qi->lqi_space      = 1;
 775         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 776         if (rc == -EDQUOT || rc == -EINPROGRESS)
 777                 rc = 0;
 778         if (rc)
 779                 return rc;
 780
 781         /* and one less inode for the current id */
 782         qi->lqi_id.qid_uid = orig_id;;
 783         qi->lqi_space      = -1;
 784         /* can't get EDQUOT when reducing usage */
 785         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 786         if (rc == -EINPROGRESS)
 787                 rc = 0;
 788         if (rc)
 789                 return rc;
 790
 791         /* block accounting */
 792         qi->lqi_is_blk = true;
 793
 794         /* more blocks for the new owner ... */
 795         qi->lqi_id.qid_uid = new_id;
 796         qi->lqi_space      = bspace;
 797         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 798         if (rc == -EDQUOT || rc == -EINPROGRESS)
 799                 rc = 0;
 800         if (rc)
 801                 return rc;
 802
 803         /* and finally less blocks for the current owner */
 804         qi->lqi_id.qid_uid = orig_id;
 805         qi->lqi_space      = -bspace;
 806         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 807         /* can't get EDQUOT when reducing usage */
 808         if (rc == -EINPROGRESS)
 809                 rc = 0;
 810         return rc;
 811 }
 812
 813 static int osd_declare_attr_set(const struct lu_env *env,
 814                                 struct dt_object *dt,
 815                                 const struct lu_attr *attr,
 816                                 struct thandle *handle)
 817 {
 818         struct osd_thread_info  *info = osd_oti_get(env);
 819         char                    *buf = osd_oti_get(env)->oti_str;
 820         struct osd_object       *obj = osd_dt_obj(dt);
 821         struct osd_device       *osd = osd_obj2dev(obj);
 822         struct osd_thandle      *oh;
 823         uint64_t                 bspace;
 824         uint32_t                 blksize;
 825         int                      rc;
 826         ENTRY;
 827
 828         if (!dt_object_exists(dt)) {
 829                 /* XXX: sanity check that object creation is declared */
 830                 RETURN(0);
 831         }
 832
 833         LASSERT(handle != NULL);
 834         LASSERT(osd_invariant(obj));
 835
 836         oh = container_of0(handle, struct osd_thandle, ot_super);
 837
 838         LASSERT(obj->oo_sa_hdl != NULL);
 839         dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
 840
 841         sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
 842         bspace = toqb(bspace * blksize);
 843
 844         if (attr && attr->la_valid & LA_UID) {
 845                 /* account for user inode tracking ZAP update */
 846                 dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
 847                 dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
 848
 849                 /* quota enforcement for user */
 850                 if (attr->la_uid != obj->oo_attr.la_uid) {
 851                         rc = qsd_transfer(env, osd->od_quota_slave,
 852                                           &oh->ot_quota_trans, USRQUOTA,
 853                                           obj->oo_attr.la_uid, attr->la_uid,
 854                                           bspace, &info->oti_qi);
 855                         if (rc)
 856                                 RETURN(rc);
 857                 }
 858         }
 859         if (attr && attr->la_valid & LA_GID) {
 860                 /* account for user inode tracking ZAP update */
 861                 dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
 862                 dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
 863
 864                 /* quota enforcement for group */
 865                 if (attr->la_gid != obj->oo_attr.la_gid) {
 866                         rc = qsd_transfer(env, osd->od_quota_slave,
 867                                           &oh->ot_quota_trans, GRPQUOTA,
 868                                           obj->oo_attr.la_gid, attr->la_gid,
 869                                           bspace, &info->oti_qi);
 870                         if (rc)
 871                                 RETURN(rc);
 872                 }
 873         }
 874
 875         RETURN(0);
 876 }
 877
 878 /*
 879  * Set the attributes of an object
 880  *
 881  * The transaction passed to this routine must have
 882  * dmu_tx_hold_bonus(tx, oid) called and then assigned
 883  * to a transaction group.
 884  */
 885 static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
 886                         const struct lu_attr *la, struct thandle *handle,
 887                         struct lustre_capa *capa)
 888 {
 889         struct osd_object       *obj = osd_dt_obj(dt);
 890         struct osd_device       *osd = osd_obj2dev(obj);
 891         udmu_objset_t           *uos = &osd->od_objset;
 892         struct osd_thandle      *oh;
 893         struct osa_attr         *osa = &osd_oti_get(env)->oti_osa;
 894         sa_bulk_attr_t          *bulk;
 895         int                      cnt;
 896         int                      rc = 0;
 897
 898         ENTRY;
 899         LASSERT(handle != NULL);
 900         LASSERT(dt_object_exists(dt));
 901         LASSERT(osd_invariant(obj));
 902         LASSERT(obj->oo_sa_hdl);
 903
 904         oh = container_of0(handle, struct osd_thandle, ot_super);
 905         /* Assert that the transaction has been assigned to a
 906            transaction group. */
 907         LASSERT(oh->ot_tx->tx_txg != 0);
 908
 909         if (la->la_valid == 0)
 910                 RETURN(0);
 911
 912         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 10);
 913         if (bulk == NULL)
 914                 RETURN(-ENOMEM);
 915
 916         /* do both accounting updates outside oo_attr_lock below */
 917         if ((la->la_valid & LA_UID) && (la->la_uid != obj->oo_attr.la_uid)) {
 918                 /* Update user accounting. Failure isn't fatal, but we still
 919                  * log an error message */
 920                 rc = -zap_increment_int(osd->od_objset.os, osd->od_iusr_oid,
 921                                         la->la_uid, 1, oh->ot_tx);
 922                 if (rc)
 923                         CERROR("%s: failed to update accounting ZAP for user "
 924                                 "%d (%d)\n", osd->od_svname, la->la_uid, rc);
 925                 rc = -zap_increment_int(osd->od_objset.os, osd->od_iusr_oid,
 926                                         obj->oo_attr.la_uid, -1, oh->ot_tx);
 927                 if (rc)
 928                         CERROR("%s: failed to update accounting ZAP for user "
 929                                 "%d (%d)\n", osd->od_svname,
 930                                 obj->oo_attr.la_uid, rc);
 931         }
 932         if ((la->la_valid & LA_GID) && (la->la_gid != obj->oo_attr.la_gid)) {
 933                 /* Update group accounting. Failure isn't fatal, but we still
 934                  * log an error message */
 935                 rc = -zap_increment_int(osd->od_objset.os, osd->od_igrp_oid,
 936                                         la->la_gid, 1, oh->ot_tx);
 937                 if (rc)
 938                         CERROR("%s: failed to update accounting ZAP for user "
 939                                 "%d (%d)\n", osd->od_svname, la->la_gid, rc);
 940                 rc = -zap_increment_int(osd->od_objset.os, osd->od_igrp_oid,
 941                                         obj->oo_attr.la_gid, -1, oh->ot_tx);
 942                 if (rc)
 943                         CERROR("%s: failed to update accounting ZAP for user "
 944                                 "%d (%d)\n", osd->od_svname,
 945                                 obj->oo_attr.la_gid, rc);
 946         }
 947
 948         write_lock(&obj->oo_attr_lock);
 949         cnt = 0;
 950         if (la->la_valid & LA_ATIME) {
 951                 osa->atime[0] = obj->oo_attr.la_atime = la->la_atime;
 952                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(uos), NULL,
 953                                  osa->atime, 16);
 954         }
 955         if (la->la_valid & LA_MTIME) {
 956                 osa->mtime[0] = obj->oo_attr.la_mtime = la->la_mtime;
 957                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(uos), NULL,
 958                                  osa->mtime, 16);
 959         }
 960         if (la->la_valid & LA_CTIME) {
 961                 osa->ctime[0] = obj->oo_attr.la_ctime = la->la_ctime;
 962                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(uos), NULL,
 963                                  osa->ctime, 16);
 964         }
 965         if (la->la_valid & LA_MODE) {
 966                 /* mode is stored along with type, so read it first */
 967                 obj->oo_attr.la_mode = (obj->oo_attr.la_mode & S_IFMT) |
 968                         (la->la_mode & ~S_IFMT);
 969                 osa->mode = obj->oo_attr.la_mode;
 970                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(uos), NULL,
 971                                  &osa->mode, 8);
 972         }
 973         if (la->la_valid & LA_SIZE) {
 974                 osa->size = obj->oo_attr.la_size = la->la_size;
 975                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(uos), NULL,
 976                                  &osa->size, 8);
 977         }
 978         if (la->la_valid & LA_NLINK) {
 979                 osa->nlink = obj->oo_attr.la_nlink = la->la_nlink;
 980                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(uos), NULL,
 981                                  &osa->nlink, 8);
 982         }
 983         if (la->la_valid & LA_RDEV) {
 984                 osa->rdev = obj->oo_attr.la_rdev = la->la_rdev;
 985                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(uos), NULL,
 986                                  &osa->rdev, 8);
 987         }
 988         if (la->la_valid & LA_FLAGS) {
 989                 osa->flags = obj->oo_attr.la_flags = la->la_flags;
 990                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(uos), NULL,
 991                                  &osa->flags, 8);
 992         }
 993         if (la->la_valid & LA_UID) {
 994                 osa->uid = obj->oo_attr.la_uid = la->la_uid;
 995                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(uos), NULL,
 996                                  &osa->uid, 8);
 997         }
 998         if (la->la_valid & LA_GID) {
 999                 osa->gid = obj->oo_attr.la_gid = la->la_gid;
1000                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(uos), NULL,
1001                                  &osa->gid, 8);
1002         }
1003         obj->oo_attr.la_valid |= la->la_valid;
1004         write_unlock(&obj->oo_attr_lock);
1005
1006         rc = osd_object_sa_bulk_update(obj, bulk, cnt, oh);
1007
1008         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 10);
1009         RETURN(rc);
1010 }
1011
1012 /*
1013  * Object creation.
1014  *
1015  * XXX temporary solution.
1016  */
1017
1018 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1019                         struct dt_object *parent, struct dt_object *child,
1020                         cfs_umode_t child_mode)
1021 {
1022         LASSERT(ah);
1023
1024         memset(ah, 0, sizeof(*ah));
1025         ah->dah_mode = child_mode;
1026 }
1027
1028 static int osd_declare_object_create(const struct lu_env *env,
1029                                      struct dt_object *dt,
1030                                      struct lu_attr *attr,
1031                                      struct dt_allocation_hint *hint,
1032                                      struct dt_object_format *dof,
1033                                      struct thandle *handle)
1034 {
1035         char                    *buf = osd_oti_get(env)->oti_str;
1036         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1037         struct osd_object       *obj = osd_dt_obj(dt);
1038         struct osd_device       *osd = osd_obj2dev(obj);
1039         struct osd_thandle      *oh;
1040         uint64_t                 zapid;
1041         int                      rc;
1042         ENTRY;
1043
1044         LASSERT(dof);
1045
1046         switch (dof->dof_type) {
1047                 case DFT_REGULAR:
1048                 case DFT_SYM:
1049                 case DFT_NODE:
1050                         if (obj->oo_dt.do_body_ops == NULL)
1051                                 obj->oo_dt.do_body_ops = &osd_body_ops;
1052                         break;
1053                 default:
1054                         break;
1055         }
1056
1057         LASSERT(handle != NULL);
1058         oh = container_of0(handle, struct osd_thandle, ot_super);
1059         LASSERT(oh->ot_tx != NULL);
1060
1061         switch (dof->dof_type) {
1062                 case DFT_DIR:
1063                 case DFT_INDEX:
1064                         /* for zap create */
1065                         dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, 1, NULL);
1066                         break;
1067                 case DFT_REGULAR:
1068                 case DFT_SYM:
1069                 case DFT_NODE:
1070                         /* first, we'll create new object */
1071                         dmu_tx_hold_bonus(oh->ot_tx, DMU_NEW_OBJECT);
1072                         break;
1073
1074                 default:
1075                         LBUG();
1076                         break;
1077         }
1078
1079         /* and we'll add it to some mapping */
1080         zapid = osd_get_name_n_idx(env, osd, fid, buf);
1081         dmu_tx_hold_bonus(oh->ot_tx, zapid);
1082         dmu_tx_hold_zap(oh->ot_tx, zapid, TRUE, buf);
1083
1084         /* we will also update inode accounting ZAPs */
1085         dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
1086         dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
1087         dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
1088         dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
1089
1090         dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
1091
1092         __osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
1093                                 XATTR_NAME_LMA, oh);
1094
1095         rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
1096                                false, NULL, false);
1097         RETURN(rc);
1098 }
1099
1100 int __osd_attr_init(const struct lu_env *env, udmu_objset_t *uos,
1101                     uint64_t oid, dmu_tx_t *tx, struct lu_attr *la)
1102 {
1103         sa_bulk_attr_t  *bulk;
1104         sa_handle_t     *sa_hdl;
1105         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
1106         uint64_t         gen;
1107         uint64_t         parent;
1108         uint64_t         crtime[2];
1109         timestruc_t      now;
1110         int              cnt;
1111         int              rc;
1112
1113         gethrestime(&now);
1114         gen = dmu_tx_get_txg(tx);
1115
1116         ZFS_TIME_ENCODE(&now, crtime);
1117         /* XXX: this should be real id of parent for ZPL access, but we have no
1118          * such info in OSD, probably it can be part of dt_object_format */
1119         parent = 0;
1120
1121         osa->atime[0] = la->la_atime;
1122         osa->ctime[0] = la->la_ctime;
1123         osa->mtime[0] = la->la_mtime;
1124         osa->mode = la->la_mode;
1125         osa->uid = la->la_uid;
1126         osa->gid = la->la_gid;
1127         osa->rdev = la->la_rdev;
1128         osa->nlink = la->la_nlink;
1129         osa->flags = la->la_flags;
1130         osa->size  = la->la_size;
1131
1132         /* Now add in all of the "SA" attributes */
1133         rc = -sa_handle_get(uos->os, oid, NULL, SA_HDL_PRIVATE, &sa_hdl);
1134         if (rc)
1135                 return rc;
1136
1137         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 13);
1138         if (bulk == NULL) {
1139                 rc = -ENOMEM;
1140                 goto out;
1141         }
1142         /*
1143          * we need to create all SA below upon object create.
1144          *
1145          * XXX The attribute order matters since the accounting callback relies
1146          * on static offsets (i.e. SA_*_OFFSET, see zfs_space_delta_cb()) to
1147          * look up the UID/GID attributes. Moreover, the callback does not seem
1148          * to support the spill block.
1149          * We define attributes in the same order as SA_*_OFFSET in order to
1150          * work around the problem. See ORI-610.
1151          */
1152         cnt = 0;
1153         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(uos), NULL, &osa->mode, 8);
1154         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(uos), NULL, &osa->size, 8);
1155         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(uos), NULL, &gen, 8);
1156         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(uos), NULL, &osa->uid, 8);
1157         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(uos), NULL, &osa->gid, 8);
1158         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(uos), NULL, &parent, 8);
1159         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(uos), NULL, &osa->flags, 8);
1160         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(uos), NULL, osa->atime, 16);
1161         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(uos), NULL, osa->mtime, 16);
1162         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(uos), NULL, osa->ctime, 16);
1163         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(uos), NULL, crtime, 16);
1164         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(uos), NULL, &osa->nlink, 8);
1165         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(uos), NULL, &osa->rdev, 8);
1166
1167         rc = -sa_replace_all_by_template(sa_hdl, bulk, cnt, tx);
1168
1169         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 13);
1170 out:
1171         sa_handle_destroy(sa_hdl);
1172         return rc;
1173 }
1174
1175 /*
1176  * The transaction passed to this routine must have
1177  * dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT) called and then assigned
1178  * to a transaction group.
1179  */
1180 int __osd_object_create(const struct lu_env *env, udmu_objset_t *uos,
1181                         dmu_buf_t **dbp, dmu_tx_t *tx,
1182                         struct lu_attr *la, void *tag)
1183 {
1184         uint64_t oid;
1185         int      rc;
1186
1187         LASSERT(tag);
1188         spin_lock(&uos->lock);
1189         uos->objects++;
1190         spin_unlock(&uos->lock);
1191
1192         /* Assert that the transaction has been assigned to a
1193            transaction group. */
1194         LASSERT(tx->tx_txg != 0);
1195
1196         /* Create a new DMU object. */
1197         oid = dmu_object_alloc(uos->os, DMU_OT_PLAIN_FILE_CONTENTS, 0,
1198                                DMU_OT_SA, DN_MAX_BONUSLEN, tx);
1199         rc = -sa_buf_hold(uos->os, oid, tag, dbp);
1200         if (rc)
1201                 return rc;
1202
1203         LASSERT(la->la_valid & LA_MODE);
1204         la->la_size = 0;
1205         la->la_nlink = 1;
1206
1207         return __osd_attr_init(env, uos, oid, tx, la);
1208 }
1209
1210 /*
1211  * The transaction passed to this routine must have
1212  * dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, ...) called and then assigned
1213  * to a transaction group.
1214  *
1215  * Using ZAP_FLAG_HASH64 will force the ZAP to always be a FAT ZAP.
1216  * This is fine for directories today, because storing the FID in the dirent
1217  * will also require a FAT ZAP.  If there is a new type of micro ZAP created
1218  * then we might need to re-evaluate the use of this flag and instead do
1219  * a conversion from the different internal ZAP hash formats being used. */
1220 int __osd_zap_create(const struct lu_env *env, udmu_objset_t *uos,
1221                      dmu_buf_t **zap_dbp, dmu_tx_t *tx,
1222                      struct lu_attr *la, void *tag, zap_flags_t flags)
1223 {
1224         uint64_t oid;
1225         int      rc;
1226
1227         LASSERT(tag);
1228
1229         spin_lock(&uos->lock);
1230         uos->objects++;
1231         spin_unlock(&uos->lock);
1232
1233         /* Assert that the transaction has been assigned to a
1234            transaction group. */
1235         LASSERT(tx->tx_txg != 0);
1236
1237         oid = zap_create_flags(uos->os, 0, flags | ZAP_FLAG_HASH64,
1238                                DMU_OT_DIRECTORY_CONTENTS, 12, 12,
1239                                DMU_OT_SA, DN_MAX_BONUSLEN, tx);
1240
1241         rc = -sa_buf_hold(uos->os, oid, tag, zap_dbp);
1242         if (rc)
1243                 return rc;
1244
1245         LASSERT(la->la_valid & LA_MODE);
1246         la->la_size = 2;
1247         la->la_nlink = 1;
1248
1249         return __osd_attr_init(env, uos, oid, tx, la);
1250 }
1251
1252 static dmu_buf_t *osd_mkidx(const struct lu_env *env, struct osd_device *osd,
1253                             struct lu_attr *la, struct osd_thandle *oh)
1254 {
1255         dmu_buf_t *db;
1256         int        rc;
1257
1258         /* Index file should be created as regular file in order not to confuse
1259          * ZPL which could interpret them as directory.
1260          * We set ZAP_FLAG_UINT64_KEY to let ZFS know than we are going to use
1261          * binary keys */
1262         LASSERT(S_ISREG(la->la_mode));
1263         rc = __osd_zap_create(env, &osd->od_objset, &db, oh->ot_tx, la,
1264                               osd_obj_tag, ZAP_FLAG_UINT64_KEY);
1265         if (rc)
1266                 return ERR_PTR(rc);
1267         return db;
1268 }
1269
1270 static dmu_buf_t *osd_mkdir(const struct lu_env *env, struct osd_device *osd,
1271                             struct lu_attr *la, struct osd_thandle *oh)
1272 {
1273         dmu_buf_t *db;
1274         int        rc;
1275
1276         LASSERT(S_ISDIR(la->la_mode));
1277         rc = __osd_zap_create(env, &osd->od_objset, &db, oh->ot_tx, la,
1278                               osd_obj_tag, 0);
1279         if (rc)
1280                 return ERR_PTR(rc);
1281         return db;
1282 }
1283
1284 static dmu_buf_t* osd_mkreg(const struct lu_env *env, struct osd_device *osd,
1285                             struct lu_attr *la, struct osd_thandle *oh)
1286 {
1287         dmu_buf_t *db;
1288         int         rc;
1289
1290         LASSERT(S_ISREG(la->la_mode));
1291         rc = __osd_object_create(env, &osd->od_objset, &db, oh->ot_tx, la,
1292                                  osd_obj_tag);
1293         if (rc)
1294                 return ERR_PTR(rc);
1295
1296         /*
1297          * XXX: a hack, OST to use bigger blocksize. we need
1298          * a method in OSD API to control this from OFD/MDD
1299          */
1300         if (!lu_device_is_md(osd2lu_dev(osd))) {
1301                 rc = -dmu_object_set_blocksize(osd->od_objset.os,
1302                                                db->db_object,
1303                                 128 << 10, 0, oh->ot_tx);
1304                 if (unlikely(rc)) {
1305                         CERROR("%s: can't change blocksize: %d\n",
1306                                osd->od_svname, rc);
1307                         return ERR_PTR(rc);
1308                 }
1309         }
1310
1311         return db;
1312 }
1313
1314 static dmu_buf_t *osd_mksym(const struct lu_env *env, struct osd_device *osd,
1315                             struct lu_attr *la, struct osd_thandle *oh)
1316 {
1317         dmu_buf_t *db;
1318         int        rc;
1319
1320         LASSERT(S_ISLNK(la->la_mode));
1321         rc = __osd_object_create(env, &osd->od_objset, &db, oh->ot_tx, la,
1322                                  osd_obj_tag);
1323         if (rc)
1324                 return ERR_PTR(rc);
1325         return db;
1326 }
1327
1328 static dmu_buf_t *osd_mknod(const struct lu_env *env, struct osd_device *osd,
1329                             struct lu_attr *la, struct osd_thandle *oh)
1330 {
1331         dmu_buf_t *db;
1332         int        rc;
1333
1334         la->la_valid = LA_MODE;
1335         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode))
1336                 la->la_valid |= LA_RDEV;
1337
1338         rc = __osd_object_create(env, &osd->od_objset, &db, oh->ot_tx, la,
1339                                  osd_obj_tag);
1340         if (rc)
1341                 return ERR_PTR(rc);
1342         return db;
1343 }
1344
1345 typedef dmu_buf_t *(*osd_obj_type_f)(const struct lu_env *env, struct osd_device *osd,
1346                                      struct lu_attr *la, struct osd_thandle *oh);
1347
1348 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1349 {
1350         osd_obj_type_f result;
1351
1352         switch (type) {
1353         case DFT_DIR:
1354                 result = osd_mkdir;
1355                 break;
1356         case DFT_INDEX:
1357                 result = osd_mkidx;
1358                 break;
1359         case DFT_REGULAR:
1360                 result = osd_mkreg;
1361                 break;
1362         case DFT_SYM:
1363                 result = osd_mksym;
1364                 break;
1365         case DFT_NODE:
1366                 result = osd_mknod;
1367                 break;
1368         default:
1369                 LBUG();
1370                 break;
1371         }
1372         return result;
1373 }
1374
1375 /*
1376  * Primitives for directory (i.e. ZAP) handling
1377  */
1378 static inline int osd_init_lma(const struct lu_env *env, struct osd_object *obj,
1379                                const struct lu_fid *fid, struct osd_thandle *oh)
1380 {
1381         struct osd_thread_info  *info = osd_oti_get(env);
1382         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1383         struct lu_buf            buf;
1384         int rc;
1385
1386         lustre_lma_init(lma, fid);
1387         lustre_lma_swab(lma);
1388         buf.lb_buf = lma;
1389         buf.lb_len = sizeof(*lma);
1390
1391         rc = osd_xattr_set_internal(env, obj, &buf, XATTR_NAME_LMA,
1392                                     LU_XATTR_CREATE, oh, BYPASS_CAPA);
1393
1394         return rc;
1395 }
1396
1397 /*
1398  * Concurrency: @dt is write locked.
1399  */
1400 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1401                              struct lu_attr *attr,
1402                              struct dt_allocation_hint *hint,
1403                              struct dt_object_format *dof,
1404                              struct thandle *th)
1405 {
1406         struct zpl_direntry     *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
1407         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1408         struct osd_object       *obj = osd_dt_obj(dt);
1409         struct osd_device       *osd = osd_obj2dev(obj);
1410         char                    *buf = osd_oti_get(env)->oti_str;
1411         struct osd_thandle      *oh;
1412         dmu_buf_t               *db;
1413         uint64_t                 zapid;
1414         int                      rc;
1415
1416         ENTRY;
1417
1418         /* concurrent create declarations should not see
1419          * the object inconsistent (db, attr, etc).
1420          * in regular cases acquisition should be cheap */
1421         down(&obj->oo_guard);
1422
1423         LASSERT(osd_invariant(obj));
1424         LASSERT(!dt_object_exists(dt));
1425         LASSERT(dof != NULL);
1426
1427         LASSERT(th != NULL);
1428         oh = container_of0(th, struct osd_thandle, ot_super);
1429
1430         /*
1431          * XXX missing: Quote handling.
1432          */
1433
1434         LASSERT(obj->oo_db == NULL);
1435
1436         db = osd_create_type_f(dof->dof_type)(env, osd, attr, oh);
1437         if (IS_ERR(db))
1438                 GOTO(out, rc = PTR_ERR(th));
1439
1440         zde->zde_pad = 0;
1441         zde->zde_dnode = db->db_object;
1442         zde->zde_type = IFTODT(attr->la_mode & S_IFMT);
1443
1444         zapid = osd_get_name_n_idx(env, osd, fid, buf);
1445
1446         rc = -zap_add(osd->od_objset.os, zapid, buf, 8, 1, zde, oh->ot_tx);
1447         if (rc)
1448                 GOTO(out, rc);
1449
1450         /* Add new object to inode accounting.
1451          * Errors are not considered as fatal */
1452         rc = -zap_increment_int(osd->od_objset.os, osd->od_iusr_oid,
1453                                 (attr->la_valid & LA_UID) ? attr->la_uid : 0, 1,
1454                                 oh->ot_tx);
1455         if (rc)
1456                 CERROR("%s: failed to add "DFID" to accounting ZAP for usr %d "
1457                         "(%d)\n", osd->od_svname, PFID(fid), attr->la_uid, rc);
1458         rc = -zap_increment_int(osd->od_objset.os, osd->od_igrp_oid,
1459                                 (attr->la_valid & LA_GID) ? attr->la_gid : 0, 1,
1460                                 oh->ot_tx);
1461         if (rc)
1462                 CERROR("%s: failed to add "DFID" to accounting ZAP for grp %d "
1463                         "(%d)\n", osd->od_svname, PFID(fid), attr->la_gid, rc);
1464
1465         /* configure new osd object */
1466         obj->oo_db = db;
1467         rc = osd_object_init0(env, obj);
1468         LASSERT(ergo(rc == 0, dt_object_exists(dt)));
1469         LASSERT(osd_invariant(obj));
1470
1471         rc = osd_init_lma(env, obj, fid, oh);
1472         if (rc) {
1473                 CERROR("%s: can not set LMA on "DFID": rc = %d\n",
1474                        osd->od_svname, PFID(fid), rc);
1475                 /* ignore errors during LMA initialization */
1476                 rc = 0;
1477         }
1478
1479 out:
1480         up(&obj->oo_guard);
1481         RETURN(rc);
1482 }
1483
1484 static int osd_declare_object_ref_add(const struct lu_env *env,
1485                                       struct dt_object *dt,
1486                                       struct thandle *th)
1487 {
1488         return osd_declare_attr_set(env, dt, NULL, th);
1489 }
1490
1491 /*
1492  * Concurrency: @dt is write locked.
1493  */
1494 static int osd_object_ref_add(const struct lu_env *env,
1495                               struct dt_object *dt,
1496                               struct thandle *handle)
1497 {
1498         struct osd_object       *obj = osd_dt_obj(dt);
1499         struct osd_thandle      *oh;
1500         struct osd_device       *osd = osd_obj2dev(obj);
1501         udmu_objset_t           *uos = &osd->od_objset;
1502         uint64_t                 nlink;
1503         int rc;
1504
1505         ENTRY;
1506
1507         LASSERT(osd_invariant(obj));
1508         LASSERT(dt_object_exists(dt));
1509         LASSERT(obj->oo_sa_hdl != NULL);
1510
1511         oh = container_of0(handle, struct osd_thandle, ot_super);
1512
1513         write_lock(&obj->oo_attr_lock);
1514         nlink = ++obj->oo_attr.la_nlink;
1515         write_unlock(&obj->oo_attr_lock);
1516
1517         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(uos), &nlink, 8, oh);
1518         return rc;
1519 }
1520
1521 static int osd_declare_object_ref_del(const struct lu_env *env,
1522                                       struct dt_object *dt,
1523                                       struct thandle *handle)
1524 {
1525         return osd_declare_attr_set(env, dt, NULL, handle);
1526 }
1527
1528 /*
1529  * Concurrency: @dt is write locked.
1530  */
1531 static int osd_object_ref_del(const struct lu_env *env,
1532                               struct dt_object *dt,
1533                               struct thandle *handle)
1534 {
1535         struct osd_object       *obj = osd_dt_obj(dt);
1536         struct osd_thandle      *oh;
1537         struct osd_device       *osd = osd_obj2dev(obj);
1538         udmu_objset_t           *uos = &osd->od_objset;
1539         uint64_t                 nlink;
1540         int                      rc;
1541
1542         ENTRY;
1543
1544         LASSERT(osd_invariant(obj));
1545         LASSERT(dt_object_exists(dt));
1546         LASSERT(obj->oo_sa_hdl != NULL);
1547
1548         oh = container_of0(handle, struct osd_thandle, ot_super);
1549         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
1550
1551         write_lock(&obj->oo_attr_lock);
1552         nlink = --obj->oo_attr.la_nlink;
1553         write_unlock(&obj->oo_attr_lock);
1554
1555         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(uos), &nlink, 8, oh);
1556         return rc;
1557 }
1558
1559 static int capa_is_sane(const struct lu_env *env, struct osd_device *dev,
1560                         struct lustre_capa *capa, struct lustre_capa_key *keys)
1561 {
1562         struct osd_thread_info  *oti = osd_oti_get(env);
1563         struct obd_capa         *oc;
1564         int                      i, rc = 0;
1565         ENTRY;
1566
1567         oc = capa_lookup(dev->od_capa_hash, capa, 0);
1568         if (oc) {
1569                 if (capa_is_expired(oc)) {
1570                         DEBUG_CAPA(D_ERROR, capa, "expired");
1571                         rc = -ESTALE;
1572                 }
1573                 capa_put(oc);
1574                 RETURN(rc);
1575         }
1576
1577         spin_lock(&capa_lock);
1578         for (i = 0; i < 2; i++) {
1579                 if (keys[i].lk_keyid == capa->lc_keyid) {
1580                         oti->oti_capa_key = keys[i];
1581                         break;
1582                 }
1583         }
1584         spin_unlock(&capa_lock);
1585
1586         if (i == 2) {
1587                 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1588                 RETURN(-ESTALE);
1589         }
1590
1591         rc = capa_hmac(oti->oti_capa.lc_hmac, capa, oti->oti_capa_key.lk_key);
1592         if (rc)
1593                 RETURN(rc);
1594         if (memcmp(oti->oti_capa.lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac)))
1595         {
1596                 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1597                 RETURN(-EACCES);
1598         }
1599
1600         oc = capa_add(dev->od_capa_hash, capa);
1601         capa_put(oc);
1602
1603         RETURN(0);
1604 }
1605
1606 static int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1607                            struct lustre_capa *capa, __u64 opc)
1608 {
1609         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1610         struct osd_device       *dev = osd_dev(dt->do_lu.lo_dev);
1611         int                      rc;
1612
1613         if (!dev->od_fl_capa)
1614                 return 0;
1615
1616         if (capa == BYPASS_CAPA)
1617                 return 0;
1618
1619         if (!capa) {
1620                 CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
1621                 return -EACCES;
1622         }
1623
1624         if (!lu_fid_eq(fid, &capa->lc_fid)) {
1625                 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",PFID(fid));
1626                 return -EACCES;
1627         }
1628
1629         if (!capa_opc_supported(capa, opc)) {
1630                 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1631                 return -EACCES;
1632         }
1633
1634         if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
1635                 DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
1636                 return -EACCES;
1637         }
1638
1639         return 0;
1640 }
1641
1642 static struct obd_capa *osd_capa_get(const struct lu_env *env,
1643                                      struct dt_object *dt,
1644                                      struct lustre_capa *old,
1645                                      __u64 opc)
1646 {
1647         struct osd_thread_info  *info = osd_oti_get(env);
1648         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1649         struct osd_object       *obj = osd_dt_obj(dt);
1650         struct osd_device       *dev = osd_obj2dev(obj);
1651         struct lustre_capa_key  *key = &info->oti_capa_key;
1652         struct lustre_capa      *capa = &info->oti_capa;
1653         struct obd_capa         *oc;
1654         int                      rc;
1655         ENTRY;
1656
1657         if (!dev->od_fl_capa)
1658                 RETURN(ERR_PTR(-ENOENT));
1659
1660         LASSERT(dt_object_exists(dt));
1661         LASSERT(osd_invariant(obj));
1662
1663         /* renewal sanity check */
1664         if (old && osd_object_auth(env, dt, old, opc))
1665                 RETURN(ERR_PTR(-EACCES));
1666
1667         capa->lc_fid = *fid;
1668         capa->lc_opc = opc;
1669         capa->lc_uid = 0;
1670         capa->lc_flags = dev->od_capa_alg << 24;
1671         capa->lc_timeout = dev->od_capa_timeout;
1672         capa->lc_expiry = 0;
1673
1674         oc = capa_lookup(dev->od_capa_hash, capa, 1);
1675         if (oc) {
1676                 LASSERT(!capa_is_expired(oc));
1677                 RETURN(oc);
1678         }
1679
1680         spin_lock(&capa_lock);
1681         *key = dev->od_capa_keys[1];
1682         spin_unlock(&capa_lock);
1683
1684         capa->lc_keyid = key->lk_keyid;
1685         capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
1686
1687         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
1688         if (rc) {
1689                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
1690                 LBUG();
1691                 RETURN(ERR_PTR(rc));
1692         }
1693
1694         oc = capa_add(dev->od_capa_hash, capa);
1695         RETURN(oc);
1696 }
1697
1698 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt)
1699 {
1700         struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
1701         ENTRY;
1702
1703         /* XXX: no other option than syncing the whole filesystem until we
1704          * support ZIL */
1705         txg_wait_synced(dmu_objset_pool(osd->od_objset.os), 0ULL);
1706
1707         RETURN(0);
1708 }
1709
1710 static struct dt_object_operations osd_obj_ops = {
1711         .do_read_lock           = osd_object_read_lock,
1712         .do_write_lock          = osd_object_write_lock,
1713         .do_read_unlock         = osd_object_read_unlock,
1714         .do_write_unlock        = osd_object_write_unlock,
1715         .do_write_locked        = osd_object_write_locked,
1716         .do_attr_get            = osd_attr_get,
1717         .do_declare_attr_set    = osd_declare_attr_set,
1718         .do_attr_set            = osd_attr_set,
1719         .do_ah_init             = osd_ah_init,
1720         .do_declare_create      = osd_declare_object_create,
1721         .do_create              = osd_object_create,
1722         .do_declare_destroy     = osd_declare_object_destroy,
1723         .do_destroy             = osd_object_destroy,
1724         .do_index_try           = osd_index_try,
1725         .do_declare_ref_add     = osd_declare_object_ref_add,
1726         .do_ref_add             = osd_object_ref_add,
1727         .do_declare_ref_del     = osd_declare_object_ref_del,
1728         .do_ref_del             = osd_object_ref_del,
1729         .do_xattr_get           = osd_xattr_get,
1730         .do_declare_xattr_set   = osd_declare_xattr_set,
1731         .do_xattr_set           = osd_xattr_set,
1732         .do_declare_xattr_del   = osd_declare_xattr_del,
1733         .do_xattr_del           = osd_xattr_del,
1734         .do_xattr_list          = osd_xattr_list,
1735         .do_capa_get            = osd_capa_get,
1736         .do_object_sync         = osd_object_sync,
1737 };
1738
1739 static struct lu_object_operations osd_lu_obj_ops = {
1740         .loo_object_init        = osd_object_init,
1741         .loo_object_delete      = osd_object_delete,
1742         .loo_object_release     = osd_object_release,
1743         .loo_object_free        = osd_object_free,
1744         .loo_object_print       = osd_object_print,
1745         .loo_object_invariant   = osd_object_invariant,
1746 };
1747
1748 static int osd_otable_it_attr_get(const struct lu_env *env,
1749                                 struct dt_object *dt,
1750                                 struct lu_attr *attr,
1751                                 struct lustre_capa *capa)
1752 {
1753         attr->la_valid = 0;
1754         return 0;
1755 }
1756
1757 static struct dt_object_operations osd_obj_otable_it_ops = {
1758         .do_attr_get    = osd_otable_it_attr_get,
1759         .do_index_try   = osd_index_try,
1760 };
1761