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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2012, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/osd-zfs/osd_object.c
  33  *
  34  * Author: Alex Zhuravlev <bzzz@whamcloud.com>
  35  * Author: Mike Pershin <tappro@whamcloud.com>
  36  * Author: Johann Lombardi <johann@whamcloud.com>
  37  */
  38
  39 #define DEBUG_SUBSYSTEM S_OSD
  40
  41 #include <libcfs/libcfs.h>
  42 #include <obd_support.h>
  43 #include <lustre_net.h>
  44 #include <obd.h>
  45 #include <obd_class.h>
  46 #include <lustre_disk.h>
  47 #include <lustre_fid.h>
  48
  49 #include "osd_internal.h"
  50
  51 #include <sys/dnode.h>
  52 #include <sys/dbuf.h>
  53 #include <sys/spa.h>
  54 #include <sys/stat.h>
  55 #include <sys/zap.h>
  56 #include <sys/spa_impl.h>
  57 #include <sys/zfs_znode.h>
  58 #include <sys/dmu_tx.h>
  59 #include <sys/dmu_objset.h>
  60 #include <sys/dsl_prop.h>
  61 #include <sys/sa_impl.h>
  62 #include <sys/txg.h>
  63
  64 char *osd_obj_tag = "osd_object";
  65
  66 static struct dt_object_operations osd_obj_ops;
  67 static struct lu_object_operations osd_lu_obj_ops;
  68 extern struct dt_body_operations osd_body_ops;
  69 static struct dt_object_operations osd_obj_otable_it_ops;
  70
  71 extern struct kmem_cache *osd_object_kmem;
  72
  73 static void
  74 osd_object_sa_fini(struct osd_object *obj)
  75 {
  76         if (obj->oo_sa_hdl) {
  77                 sa_handle_destroy(obj->oo_sa_hdl);
  78                 obj->oo_sa_hdl = NULL;
  79         }
  80 }
  81
  82 static int
  83 osd_object_sa_init(struct osd_object *obj, struct osd_device *o)
  84 {
  85         int rc;
  86
  87         LASSERT(obj->oo_sa_hdl == NULL);
  88         LASSERT(obj->oo_dn != NULL);
  89
  90         rc = osd_sa_handle_get(obj);
  91         if (rc)
  92                 return rc;
  93
  94         /* Cache the xattr object id, valid for the life of the object */
  95         rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(o), &obj->oo_xattr, 8);
  96         if (rc == -ENOENT) {
  97                 obj->oo_xattr = ZFS_NO_OBJECT;
  98                 rc = 0;
  99         } else if (rc) {
 100                 osd_object_sa_fini(obj);
 101         }
 102
 103         return rc;
 104 }
 105
 106 /*
 107  * Add object to list of dirty objects in tx handle.
 108  */
 109 void osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
 110 {
 111         if (!list_empty(&obj->oo_sa_linkage))
 112                 return;
 113
 114         write_lock(&obj->oo_attr_lock);
 115         if (likely(list_empty(&obj->oo_sa_linkage)))
 116                 list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
 117         write_unlock(&obj->oo_attr_lock);
 118 }
 119
 120 /*
 121  * Release spill block dbuf hold for all dirty SAs.
 122  */
 123 void osd_object_sa_dirty_rele(const struct lu_env *env, struct osd_thandle *oh)
 124 {
 125         struct osd_object *obj;
 126
 127         while (!list_empty(&oh->ot_sa_list)) {
 128                 obj = list_entry(oh->ot_sa_list.next,
 129                                  struct osd_object, oo_sa_linkage);
 130                 write_lock(&obj->oo_attr_lock);
 131                 list_del_init(&obj->oo_sa_linkage);
 132                 write_unlock(&obj->oo_attr_lock);
 133                 if (obj->oo_late_xattr) {
 134                         /*
 135                          * take oo_guard to protect oo_sa_xattr buffer
 136                          * from concurrent update by osd_xattr_set()
 137                          */
 138                         LASSERT(oh->ot_assigned != 0);
 139                         down_write(&obj->oo_guard);
 140                         if (obj->oo_late_attr_set)
 141                                 __osd_sa_attr_init(env, obj, oh);
 142                         else if (obj->oo_late_xattr)
 143                                 __osd_sa_xattr_update(env, obj, oh);
 144                         up_write(&obj->oo_guard);
 145                 }
 146                 sa_spill_rele(obj->oo_sa_hdl);
 147         }
 148 }
 149
 150 /*
 151  * Update the SA and add the object to the dirty list.
 152  */
 153 int osd_object_sa_update(struct osd_object *obj, sa_attr_type_t type,
 154                          void *buf, uint32_t buflen, struct osd_thandle *oh)
 155 {
 156         int rc;
 157
 158         LASSERT(obj->oo_sa_hdl != NULL);
 159         LASSERT(oh->ot_tx != NULL);
 160
 161         rc = -sa_update(obj->oo_sa_hdl, type, buf, buflen, oh->ot_tx);
 162         osd_object_sa_dirty_add(obj, oh);
 163
 164         return rc;
 165 }
 166
 167 /*
 168  * Bulk update the SA and add the object to the dirty list.
 169  */
 170 static int
 171 osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 172                           int count, struct osd_thandle *oh)
 173 {
 174         int rc;
 175
 176         LASSERT(obj->oo_sa_hdl != NULL);
 177         LASSERT(oh->ot_tx != NULL);
 178
 179         rc = -sa_bulk_update(obj->oo_sa_hdl, attrs, count, oh->ot_tx);
 180         osd_object_sa_dirty_add(obj, oh);
 181
 182         return rc;
 183 }
 184
 185 /*
 186  * Retrieve the attributes of a DMU object
 187  */
 188 int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
 189                           struct osd_object *obj, struct lu_attr *la)
 190 {
 191         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
 192         sa_bulk_attr_t  *bulk = osd_oti_get(env)->oti_attr_bulk;
 193         int              cnt = 0;
 194         int              rc;
 195         ENTRY;
 196
 197         LASSERT(obj->oo_dn != NULL);
 198
 199         la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
 200                         LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
 201
 202         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(o), NULL, osa->atime, 16);
 203         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(o), NULL, osa->mtime, 16);
 204         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(o), NULL, osa->ctime, 16);
 205         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(o), NULL, &osa->mode, 8);
 206         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(o), NULL, &osa->size, 8);
 207         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(o), NULL, &osa->nlink, 8);
 208         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(o), NULL, &osa->uid, 8);
 209         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(o), NULL, &osa->gid, 8);
 210         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(o), NULL, &osa->flags, 8);
 211         LASSERT(cnt <= ARRAY_SIZE(osd_oti_get(env)->oti_attr_bulk));
 212
 213         rc = -sa_bulk_lookup(obj->oo_sa_hdl, bulk, cnt);
 214         if (rc)
 215                 GOTO(out_sa, rc);
 216
 217 #ifdef ZFS_PROJINHERIT
 218         if (o->od_projectused_dn && osa->flags & ZFS_PROJID) {
 219                 rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_PROJID(o),
 220                                 &osa->projid, 8);
 221                 if (rc)
 222                         GOTO(out_sa, rc);
 223
 224                 la->la_projid = osa->projid;
 225                 la->la_valid |= LA_PROJID;
 226                 obj->oo_with_projid = 1;
 227         } else {
 228                 la->la_projid = ZFS_DEFAULT_PROJID;
 229                 la->la_valid &= ~LA_PROJID;
 230         }
 231 #else
 232         la->la_projid = 0;
 233         la->la_valid &= ~LA_PROJID;
 234 #endif
 235
 236         la->la_atime = osa->atime[0];
 237         la->la_mtime = osa->mtime[0];
 238         la->la_ctime = osa->ctime[0];
 239         la->la_mode = osa->mode;
 240         la->la_uid = osa->uid;
 241         la->la_gid = osa->gid;
 242         la->la_nlink = osa->nlink;
 243         la->la_flags = attrs_zfs2fs(osa->flags);
 244         la->la_size = osa->size;
 245
 246         /* Try to get extra flag from LMA. Right now, only LMAI_ORPHAN
 247          * flags is stored in LMA, and it is only for orphan directory */
 248         if (S_ISDIR(la->la_mode) && dt_object_exists(&obj->oo_dt)) {
 249                 struct osd_thread_info *info = osd_oti_get(env);
 250                 struct lustre_mdt_attrs *lma;
 251                 struct lu_buf buf;
 252
 253                 lma = (struct lustre_mdt_attrs *)info->oti_buf;
 254                 buf.lb_buf = lma;
 255                 buf.lb_len = sizeof(info->oti_buf);
 256                 rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 257                 if (rc > 0) {
 258                         rc = 0;
 259                         lma->lma_incompat = le32_to_cpu(lma->lma_incompat);
 260                         obj->oo_lma_flags =
 261                                 lma_to_lustre_flags(lma->lma_incompat);
 262
 263                 } else if (rc == -ENODATA) {
 264                         rc = 0;
 265                 }
 266         }
 267
 268         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
 269                 rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_RDEV(o), &osa->rdev, 8);
 270                 if (rc)
 271                         GOTO(out_sa, rc);
 272                 la->la_rdev = osa->rdev;
 273                 la->la_valid |= LA_RDEV;
 274         }
 275 out_sa:
 276
 277         RETURN(rc);
 278 }
 279
 280 int __osd_obj2dnode(objset_t *os, uint64_t oid, dnode_t **dnp)
 281 {
 282         dmu_buf_t *db;
 283         dmu_buf_impl_t *dbi;
 284         int rc;
 285
 286         rc = -dmu_bonus_hold(os, oid, osd_obj_tag, &db);
 287         if (rc)
 288                 return rc;
 289
 290         dbi = (dmu_buf_impl_t *)db;
 291         DB_DNODE_ENTER(dbi);
 292         *dnp = DB_DNODE(dbi);
 293         LASSERT(*dnp != NULL);
 294
 295         return 0;
 296 }
 297
 298 /*
 299  * Concurrency: no concurrent access is possible that early in object
 300  * life-cycle.
 301  */
 302 struct lu_object *osd_object_alloc(const struct lu_env *env,
 303                                    const struct lu_object_header *hdr,
 304                                    struct lu_device *d)
 305 {
 306         struct osd_object *mo;
 307
 308         OBD_SLAB_ALLOC_PTR_GFP(mo, osd_object_kmem, GFP_NOFS);
 309         if (mo != NULL) {
 310                 struct lu_object *l;
 311
 312                 l = &mo->oo_dt.do_lu;
 313                 dt_object_init(&mo->oo_dt, NULL, d);
 314                 mo->oo_dt.do_ops = &osd_obj_ops;
 315                 l->lo_ops = &osd_lu_obj_ops;
 316                 INIT_LIST_HEAD(&mo->oo_sa_linkage);
 317                 INIT_LIST_HEAD(&mo->oo_unlinked_linkage);
 318                 init_rwsem(&mo->oo_sem);
 319                 init_rwsem(&mo->oo_guard);
 320                 rwlock_init(&mo->oo_attr_lock);
 321                 mo->oo_destroy = OSD_DESTROY_NONE;
 322                 return l;
 323         } else {
 324                 return NULL;
 325         }
 326 }
 327
 328 static void osd_obj_set_blksize(const struct lu_env *env,
 329                                 struct osd_device *osd, struct osd_object *obj)
 330 {
 331         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
 332         dmu_tx_t *tx;
 333         dnode_t *dn = obj->oo_dn;
 334         uint32_t blksz;
 335         int rc = 0;
 336         ENTRY;
 337
 338         LASSERT(!osd_oti_get(env)->oti_in_trans);
 339
 340         tx = dmu_tx_create(osd->od_os);
 341         if (!tx) {
 342                 CERROR("%s: fail to create tx to set blksize for "DFID"\n",
 343                        osd->od_svname, PFID(fid));
 344                 RETURN_EXIT;
 345         }
 346
 347         dmu_tx_hold_bonus(tx, dn->dn_object);
 348         rc = -dmu_tx_assign(tx, TXG_WAIT);
 349         if (rc) {
 350                 dmu_tx_abort(tx);
 351                 CERROR("%s: fail to assign tx to set blksize for "DFID
 352                        ": rc = %d\n", osd->od_svname, PFID(fid), rc);
 353                 RETURN_EXIT;
 354         }
 355
 356         down_write(&obj->oo_guard);
 357         if (unlikely((1 << dn->dn_datablkshift) >= PAGE_SIZE))
 358                 GOTO(out, rc = 1);
 359
 360         blksz = dn->dn_datablksz;
 361         if (!is_power_of_2(blksz))
 362                 blksz = size_roundup_power2(blksz);
 363
 364         if (blksz > osd->od_max_blksz)
 365                 blksz = osd->od_max_blksz;
 366         else if (blksz < PAGE_SIZE)
 367                 blksz = PAGE_SIZE;
 368         rc = -dmu_object_set_blocksize(osd->od_os, dn->dn_object, blksz, 0, tx);
 369
 370         GOTO(out, rc);
 371
 372 out:
 373         up_write(&obj->oo_guard);
 374         if (rc) {
 375                 dmu_tx_abort(tx);
 376                 if (unlikely(obj->oo_dn->dn_maxblkid > 0))
 377                         rc = 1;
 378                 if (rc < 0)
 379                         CERROR("%s: fail to set blksize for "DFID": rc = %d\n",
 380                                osd->od_svname, PFID(fid), rc);
 381         } else {
 382                 dmu_tx_commit(tx);
 383                 CDEBUG(D_INODE, "%s: set blksize as %u for "DFID"\n",
 384                        osd->od_svname, blksz, PFID(fid));
 385         }
 386 }
 387
 388 /*
 389  * Concurrency: shouldn't matter.
 390  */
 391 int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 392 {
 393         struct osd_device       *osd = osd_obj2dev(obj);
 394         const struct lu_fid     *fid = lu_object_fid(&obj->oo_dt.do_lu);
 395         int                      rc = 0;
 396         ENTRY;
 397
 398         LASSERT(obj->oo_dn);
 399
 400         rc = osd_object_sa_init(obj, osd);
 401         if (rc)
 402                 RETURN(rc);
 403
 404         /* cache attrs in object */
 405         rc = __osd_object_attr_get(env, osd, obj, &obj->oo_attr);
 406         if (rc)
 407                 RETURN(rc);
 408
 409         if (likely(!fid_is_acct(fid))) {
 410                 /* no body operations for accounting objects */
 411                 obj->oo_dt.do_body_ops = &osd_body_ops;
 412
 413                 if (S_ISREG(obj->oo_attr.la_mode) &&
 414                     obj->oo_dn->dn_maxblkid == 0 &&
 415                     (1 << obj->oo_dn->dn_datablkshift) < PAGE_SIZE &&
 416                     (fid_is_idif(fid) || fid_is_norm(fid) ||
 417                      fid_is_echo(fid)) &&
 418                     osd->od_is_ost && !osd->od_dt_dev.dd_rdonly)
 419                         osd_obj_set_blksize(env, osd, obj);
 420         }
 421
 422         /*
 423          * initialize object before marking it existing
 424          */
 425         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
 426
 427         smp_mb();
 428         obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
 429
 430         RETURN(0);
 431 }
 432
 433 static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
 434 {
 435         struct osd_thread_info  *info = osd_oti_get(env);
 436         struct lu_buf           buf;
 437         int                     rc;
 438         struct lustre_mdt_attrs *lma;
 439         ENTRY;
 440
 441         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
 442         lma = (struct lustre_mdt_attrs *)info->oti_buf;
 443         buf.lb_buf = lma;
 444         buf.lb_len = sizeof(info->oti_buf);
 445
 446         rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 447         if (rc > 0) {
 448                 rc = 0;
 449                 lustre_lma_swab(lma);
 450                 if (unlikely((lma->lma_incompat & ~LMA_INCOMPAT_SUPP) ||
 451                              CFS_FAIL_CHECK(OBD_FAIL_OSD_LMA_INCOMPAT))) {
 452                         CWARN("%s: unsupported incompat LMA feature(s) %#x for "
 453                               "fid = "DFID"\n", osd_obj2dev(obj)->od_svname,
 454                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 455                               PFID(lu_object_fid(&obj->oo_dt.do_lu)));
 456                         rc = -EOPNOTSUPP;
 457                 } else {
 458                         struct osd_device *osd = osd_obj2dev(obj);
 459
 460                         if (lma->lma_compat & LMAC_STRIPE_INFO &&
 461                             osd->od_is_ost)
 462                                 obj->oo_pfid_in_lma = 1;
 463                         if (unlikely(lma->lma_incompat & LMAI_REMOTE_PARENT) &&
 464                             osd->od_remote_parent_dir != ZFS_NO_OBJECT)
 465                                 lu_object_set_agent_entry(&obj->oo_dt.do_lu);
 466                 }
 467         } else if (rc == -ENODATA) {
 468                 /* haven't initialize LMA xattr */
 469                 rc = 0;
 470         }
 471
 472         RETURN(rc);
 473 }
 474
 475 /**
 476  * Helper function to retrieve DMU object id from fid for accounting object
 477  */
 478 static dnode_t *osd_quota_fid2dmu(const struct osd_device *osd,
 479                                   const struct lu_fid *fid)
 480 {
 481         dnode_t *dn = NULL;
 482
 483         LASSERT(fid_is_acct(fid));
 484
 485         switch (fid_oid(fid)) {
 486         case ACCT_USER_OID:
 487                 dn = osd->od_userused_dn;
 488                 break;
 489         case ACCT_GROUP_OID:
 490                 dn = osd->od_groupused_dn;
 491                 break;
 492 #ifdef ZFS_PROJINHERIT
 493         case ACCT_PROJECT_OID:
 494                 dn = osd->od_projectused_dn;
 495                 break;
 496 #endif
 497         default:
 498                 break;
 499         }
 500
 501         return dn;
 502 }
 503
 504 /*
 505  * Concurrency: no concurrent access is possible that early in object
 506  * life-cycle.
 507  */
 508 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 509                            const struct lu_object_conf *conf)
 510 {
 511         struct osd_object *obj = osd_obj(l);
 512         struct osd_device *osd = osd_obj2dev(obj);
 513         const struct lu_fid *fid = lu_object_fid(l);
 514         uint64_t oid;
 515         int rc = 0;
 516         ENTRY;
 517
 518         LASSERT(osd_invariant(obj));
 519
 520         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 521                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 522                 l->lo_header->loh_attr |= LOHA_EXISTS;
 523                 RETURN(0);
 524         }
 525
 526         if (conf != NULL && conf->loc_flags & LOC_F_NEW)
 527                 GOTO(out, rc = 0);
 528
 529         if (unlikely(fid_is_acct(fid))) {
 530                 obj->oo_dn = osd_quota_fid2dmu(osd, fid);
 531                 if (obj->oo_dn) {
 532                         obj->oo_dt.do_index_ops = &osd_acct_index_ops;
 533                         l->lo_header->loh_attr |= LOHA_EXISTS;
 534                 }
 535
 536                 GOTO(out, rc = 0);
 537         }
 538
 539         rc = osd_fid_lookup(env, osd, fid, &oid);
 540         if (rc == 0) {
 541                 LASSERT(obj->oo_dn == NULL);
 542                 rc = __osd_obj2dnode(osd->od_os, oid, &obj->oo_dn);
 543                 /* EEXIST will be returned if object is being deleted in ZFS */
 544                 if (rc == -EEXIST) {
 545                         rc = 0;
 546                         GOTO(out, rc);
 547                 }
 548                 if (rc != 0) {
 549                         CERROR("%s: lookup "DFID"/%#llx failed: rc = %d\n",
 550                                osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
 551                         GOTO(out, rc);
 552                 }
 553                 rc = osd_object_init0(env, obj);
 554                 if (rc != 0)
 555                         GOTO(out, rc);
 556
 557                 rc = osd_check_lma(env, obj);
 558                 if (rc != 0)
 559                         GOTO(out, rc);
 560         } else if (rc == -ENOENT) {
 561                 rc = 0;
 562         }
 563         LASSERT(osd_invariant(obj));
 564 out:
 565         RETURN(rc);
 566 }
 567
 568 /*
 569  * Concurrency: no concurrent access is possible that late in object
 570  * life-cycle.
 571  */
 572 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 573 {
 574         struct osd_object *obj = osd_obj(l);
 575
 576         LASSERT(osd_invariant(obj));
 577
 578         dt_object_fini(&obj->oo_dt);
 579         OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
 580 }
 581
 582 static int
 583 osd_object_unlinked_add(struct osd_object *obj, struct osd_thandle *oh)
 584 {
 585         int rc = -EBUSY;
 586
 587         LASSERT(obj->oo_destroy == OSD_DESTROY_ASYNC);
 588
 589         /* the object is supposed to be exclusively locked by
 590          * the caller (osd_destroy()), while the transaction
 591          * (oh) is per-thread and not shared */
 592         if (likely(list_empty(&obj->oo_unlinked_linkage))) {
 593                 list_add(&obj->oo_unlinked_linkage, &oh->ot_unlinked_list);
 594                 rc = 0;
 595         }
 596
 597         return rc;
 598 }
 599
 600 /* Default to max data size covered by a level-1 indirect block */
 601 static unsigned long osd_sync_destroy_max_size =
 602         1UL << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT + SPA_MAXBLOCKSHIFT);
 603 module_param(osd_sync_destroy_max_size, ulong, 0444);
 604 MODULE_PARM_DESC(osd_sync_destroy_max_size, "Maximum object size to use synchronous destroy.");
 605
 606 static inline void
 607 osd_object_set_destroy_type(struct osd_object *obj)
 608 {
 609         /*
 610          * Lock-less OST_WRITE can race with OST_DESTROY, so set destroy type
 611          * only once and use it consistently thereafter.
 612          */
 613         down_write(&obj->oo_guard);
 614         if (obj->oo_destroy == OSD_DESTROY_NONE) {
 615                 if (obj->oo_attr.la_size <= osd_sync_destroy_max_size)
 616                         obj->oo_destroy = OSD_DESTROY_SYNC;
 617                 else /* Larger objects are destroyed asynchronously */
 618                         obj->oo_destroy = OSD_DESTROY_ASYNC;
 619         }
 620         up_write(&obj->oo_guard);
 621 }
 622
 623 static int osd_declare_destroy(const struct lu_env *env, struct dt_object *dt,
 624                                struct thandle *th)
 625 {
 626         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 627         struct osd_object       *obj = osd_dt_obj(dt);
 628         struct osd_device       *osd = osd_obj2dev(obj);
 629         struct osd_thandle      *oh;
 630         dnode_t *dn;
 631         int                      rc;
 632         uint64_t                 zapid;
 633         ENTRY;
 634
 635         LASSERT(th != NULL);
 636         LASSERT(dt_object_exists(dt));
 637
 638         oh = container_of0(th, struct osd_thandle, ot_super);
 639         LASSERT(oh->ot_tx != NULL);
 640
 641         /* declare that we'll remove object from fid-dnode mapping */
 642         zapid = osd_get_name_n_idx(env, osd, fid, NULL, 0, &dn);
 643         osd_tx_hold_zap(oh->ot_tx, zapid, dn, FALSE, NULL);
 644
 645         osd_declare_xattrs_destroy(env, obj, oh);
 646
 647         /* one less inode */
 648         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 649                                obj->oo_attr.la_gid, obj->oo_attr.la_projid,
 650                                -1, oh, NULL, OSD_QID_INODE);
 651         if (rc)
 652                 RETURN(rc);
 653
 654         /* data to be truncated */
 655         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 656                                obj->oo_attr.la_gid, obj->oo_attr.la_projid,
 657                                0, oh, NULL, OSD_QID_BLK);
 658         if (rc)
 659                 RETURN(rc);
 660
 661         osd_object_set_destroy_type(obj);
 662         if (obj->oo_destroy == OSD_DESTROY_SYNC)
 663                 dmu_tx_hold_free(oh->ot_tx, obj->oo_dn->dn_object,
 664                                  0, DMU_OBJECT_END);
 665         else
 666                 osd_tx_hold_zap(oh->ot_tx, osd->od_unlinked->dn_object,
 667                                 osd->od_unlinked, TRUE, NULL);
 668
 669         /* remove agent entry (if have) from remote parent */
 670         if (lu_object_has_agent_entry(&obj->oo_dt.do_lu))
 671                 osd_tx_hold_zap(oh->ot_tx, osd->od_remote_parent_dir,
 672                                 NULL, FALSE, NULL);
 673
 674         /* will help to find FID->ino when this object is being
 675          * added to PENDING/ */
 676         osd_idc_find_and_init(env, osd, obj);
 677
 678         RETURN(0);
 679 }
 680
 681 static int osd_destroy(const struct lu_env *env, struct dt_object *dt,
 682                        struct thandle *th)
 683 {
 684         struct osd_thread_info  *info = osd_oti_get(env);
 685         char                    *buf = info->oti_str;
 686         struct osd_object       *obj = osd_dt_obj(dt);
 687         struct osd_device       *osd = osd_obj2dev(obj);
 688         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 689         struct osd_thandle      *oh;
 690         int                      rc;
 691         uint64_t                 oid, zapid;
 692         dnode_t *zdn;
 693         ENTRY;
 694
 695         down_write(&obj->oo_guard);
 696
 697         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 698                 GOTO(out, rc = -ENOENT);
 699
 700         LASSERT(obj->oo_dn != NULL);
 701
 702         oh = container_of0(th, struct osd_thandle, ot_super);
 703         LASSERT(oh != NULL);
 704         LASSERT(oh->ot_tx != NULL);
 705
 706         /* remove obj ref from index dir (it depends) */
 707         zapid = osd_get_name_n_idx(env, osd, fid, buf,
 708                                    sizeof(info->oti_str), &zdn);
 709         rc = osd_zap_remove(osd, zapid, zdn, buf, oh->ot_tx);
 710         if (rc) {
 711                 CERROR("%s: zap_remove(%s) failed: rc = %d\n",
 712                        osd->od_svname, buf, rc);
 713                 GOTO(out, rc);
 714         }
 715
 716         rc = osd_xattrs_destroy(env, obj, oh);
 717         if (rc) {
 718                 CERROR("%s: cannot destroy xattrs for %s: rc = %d\n",
 719                        osd->od_svname, buf, rc);
 720                 GOTO(out, rc);
 721         }
 722
 723         if (lu_object_has_agent_entry(&obj->oo_dt.do_lu)) {
 724                 rc = osd_delete_from_remote_parent(env, osd, obj, oh, true);
 725                 if (rc)
 726                         GOTO(out, rc);
 727         }
 728
 729         oid = obj->oo_dn->dn_object;
 730         if (unlikely(obj->oo_destroy == OSD_DESTROY_NONE)) {
 731                 /* this may happen if the destroy wasn't declared
 732                  * e.g. when the object is created and then destroyed
 733                  * in the same transaction - we don't need additional
 734                  * space for destroy specifically */
 735                 LASSERT(obj->oo_attr.la_size <= osd_sync_destroy_max_size);
 736                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 737                 if (rc)
 738                         CERROR("%s: failed to free %s %llu: rc = %d\n",
 739                                osd->od_svname, buf, oid, rc);
 740         } else if (obj->oo_destroy == OSD_DESTROY_SYNC) {
 741                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 742                 if (rc)
 743                         CERROR("%s: failed to free %s %llu: rc = %d\n",
 744                                osd->od_svname, buf, oid, rc);
 745         } else { /* asynchronous destroy */
 746                 char *key = info->oti_key;
 747
 748                 rc = osd_object_unlinked_add(obj, oh);
 749                 if (rc)
 750                         GOTO(out, rc);
 751
 752                 snprintf(key, sizeof(info->oti_key), "%llx", oid);
 753                 rc = osd_zap_add(osd, osd->od_unlinked->dn_object,
 754                                  osd->od_unlinked, key, 8, 1, &oid, oh->ot_tx);
 755                 if (rc)
 756                         CERROR("%s: zap_add_int() failed %s %llu: rc = %d\n",
 757                                osd->od_svname, buf, oid, rc);
 758         }
 759
 760 out:
 761         /* not needed in the cache anymore */
 762         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
 763         if (rc == 0)
 764                 obj->oo_destroyed = 1;
 765         up_write(&obj->oo_guard);
 766         RETURN (0);
 767 }
 768
 769 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 770 {
 771         struct osd_object *obj = osd_obj(l);
 772         const struct lu_fid *fid = lu_object_fid(l);
 773
 774         if (obj->oo_dn) {
 775                 if (likely(!fid_is_acct(fid))) {
 776                         osd_object_sa_fini(obj);
 777                         if (obj->oo_sa_xattr) {
 778                                 nvlist_free(obj->oo_sa_xattr);
 779                                 obj->oo_sa_xattr = NULL;
 780                         }
 781                         osd_dnode_rele(obj->oo_dn);
 782                         list_del(&obj->oo_sa_linkage);
 783                 }
 784                 obj->oo_dn = NULL;
 785         }
 786 }
 787
 788 /*
 789  * Concurrency: ->loo_object_release() is called under site spin-lock.
 790  */
 791 static void osd_object_release(const struct lu_env *env,
 792                                struct lu_object *l)
 793 {
 794 }
 795
 796 /*
 797  * Concurrency: shouldn't matter.
 798  */
 799 static int osd_object_print(const struct lu_env *env, void *cookie,
 800                             lu_printer_t p, const struct lu_object *l)
 801 {
 802         struct osd_object *o = osd_obj(l);
 803
 804         return (*p)(env, cookie, LUSTRE_OSD_ZFS_NAME"-object@%p", o);
 805 }
 806
 807 static void osd_read_lock(const struct lu_env *env, struct dt_object *dt,
 808                           unsigned role)
 809 {
 810         struct osd_object *obj = osd_dt_obj(dt);
 811
 812         LASSERT(osd_invariant(obj));
 813
 814         down_read_nested(&obj->oo_sem, role);
 815 }
 816
 817 static void osd_write_lock(const struct lu_env *env, struct dt_object *dt,
 818                            unsigned role)
 819 {
 820         struct osd_object *obj = osd_dt_obj(dt);
 821
 822         LASSERT(osd_invariant(obj));
 823
 824         down_write_nested(&obj->oo_sem, role);
 825 }
 826
 827 static void osd_read_unlock(const struct lu_env *env, struct dt_object *dt)
 828 {
 829         struct osd_object *obj = osd_dt_obj(dt);
 830
 831         LASSERT(osd_invariant(obj));
 832         up_read(&obj->oo_sem);
 833 }
 834
 835 static void osd_write_unlock(const struct lu_env *env, struct dt_object *dt)
 836 {
 837         struct osd_object *obj = osd_dt_obj(dt);
 838
 839         LASSERT(osd_invariant(obj));
 840         up_write(&obj->oo_sem);
 841 }
 842
 843 static int osd_write_locked(const struct lu_env *env, struct dt_object *dt)
 844 {
 845         struct osd_object *obj = osd_dt_obj(dt);
 846         int rc = 1;
 847
 848         LASSERT(osd_invariant(obj));
 849
 850         if (down_write_trylock(&obj->oo_sem)) {
 851                 rc = 0;
 852                 up_write(&obj->oo_sem);
 853         }
 854         return rc;
 855 }
 856
 857 static int osd_attr_get(const struct lu_env *env,
 858                         struct dt_object *dt,
 859                         struct lu_attr *attr)
 860 {
 861         struct osd_object       *obj = osd_dt_obj(dt);
 862         uint64_t                 blocks;
 863         uint32_t                 blksize;
 864         int                      rc = 0;
 865
 866         down_read(&obj->oo_guard);
 867
 868         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 869                 GOTO(out, rc = -ENOENT);
 870
 871         if (unlikely(fid_is_acct(lu_object_fid(&dt->do_lu))))
 872                 GOTO(out, rc = 0);
 873
 874         LASSERT(osd_invariant(obj));
 875         LASSERT(obj->oo_dn);
 876
 877         read_lock(&obj->oo_attr_lock);
 878         *attr = obj->oo_attr;
 879         if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL)
 880                 attr->la_flags |= LUSTRE_ORPHAN_FL;
 881         read_unlock(&obj->oo_attr_lock);
 882
 883         /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
 884          * from within sa_object_size() can block on a mutex, so
 885          * we can't call sa_object_size() holding rwlock */
 886         sa_object_size(obj->oo_sa_hdl, &blksize, &blocks);
 887         /* we do not control size of indices, so always calculate
 888          * it from number of blocks reported by DMU */
 889         if (S_ISDIR(attr->la_mode))
 890                 attr->la_size = 512 * blocks;
 891         /* Block size may be not set; suggest maximal I/O transfers. */
 892         if (blksize == 0)
 893                 blksize = osd_spa_maxblocksize(
 894                         dmu_objset_spa(osd_obj2dev(obj)->od_os));
 895
 896         attr->la_blksize = blksize;
 897         attr->la_blocks = blocks;
 898         attr->la_valid |= LA_BLOCKS | LA_BLKSIZE;
 899
 900 out:
 901         up_read(&obj->oo_guard);
 902         return rc;
 903 }
 904
 905 /* Simple wrapper on top of qsd API which implement quota transfer for osd
 906  * setattr needs. As a reminder, only the root user can change ownership of
 907  * a file, that's why EDQUOT & EINPROGRESS errors are discarded */
 908 static inline int qsd_transfer(const struct lu_env *env,
 909                                struct qsd_instance *qsd,
 910                                struct lquota_trans *trans, int qtype,
 911                                __u64 orig_id, __u64 new_id, __u64 bspace,
 912                                struct lquota_id_info *qi)
 913 {
 914         int     rc;
 915
 916         if (unlikely(qsd == NULL))
 917                 return 0;
 918
 919         LASSERT(qtype >= 0 && qtype < LL_MAXQUOTAS);
 920         qi->lqi_type = qtype;
 921
 922         /* inode accounting */
 923         qi->lqi_is_blk = false;
 924
 925         /* one more inode for the new owner ... */
 926         qi->lqi_id.qid_uid = new_id;
 927         qi->lqi_space      = 1;
 928         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 929         if (rc == -EDQUOT || rc == -EINPROGRESS)
 930                 rc = 0;
 931         if (rc)
 932                 return rc;
 933
 934         /* and one less inode for the current id */
 935         qi->lqi_id.qid_uid = orig_id;;
 936         qi->lqi_space      = -1;
 937         /* can't get EDQUOT when reducing usage */
 938         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 939         if (rc == -EINPROGRESS)
 940                 rc = 0;
 941         if (rc)
 942                 return rc;
 943
 944         /* block accounting */
 945         qi->lqi_is_blk = true;
 946
 947         /* more blocks for the new owner ... */
 948         qi->lqi_id.qid_uid = new_id;
 949         qi->lqi_space      = bspace;
 950         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 951         if (rc == -EDQUOT || rc == -EINPROGRESS)
 952                 rc = 0;
 953         if (rc)
 954                 return rc;
 955
 956         /* and finally less blocks for the current owner */
 957         qi->lqi_id.qid_uid = orig_id;
 958         qi->lqi_space      = -bspace;
 959         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 960         /* can't get EDQUOT when reducing usage */
 961         if (rc == -EINPROGRESS)
 962                 rc = 0;
 963         return rc;
 964 }
 965
 966 static int osd_declare_attr_set(const struct lu_env *env,
 967                                 struct dt_object *dt,
 968                                 const struct lu_attr *attr,
 969                                 struct thandle *handle)
 970 {
 971         struct osd_thread_info  *info = osd_oti_get(env);
 972         struct osd_object       *obj = osd_dt_obj(dt);
 973         struct osd_device       *osd = osd_obj2dev(obj);
 974         dmu_tx_hold_t           *txh;
 975         struct osd_thandle      *oh;
 976         uint64_t                 bspace;
 977         uint32_t                 blksize;
 978         int                      rc = 0;
 979         bool                     found;
 980         ENTRY;
 981
 982
 983         LASSERT(handle != NULL);
 984         LASSERT(osd_invariant(obj));
 985
 986         oh = container_of0(handle, struct osd_thandle, ot_super);
 987
 988         down_read(&obj->oo_guard);
 989         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 990                 GOTO(out, rc = 0);
 991
 992         LASSERT(obj->oo_sa_hdl != NULL);
 993         LASSERT(oh->ot_tx != NULL);
 994         /* regular attributes are part of the bonus buffer */
 995         /* let's check whether this object is already part of
 996          * transaction.. */
 997         found = false;
 998         for (txh = list_head(&oh->ot_tx->tx_holds); txh;
 999              txh = list_next(&oh->ot_tx->tx_holds, txh)) {
1000                 if (txh->txh_dnode == NULL)
1001                         continue;
1002                 if (txh->txh_dnode->dn_object != obj->oo_dn->dn_object)
1003                         continue;
1004                 /* this object is part of the transaction already
1005                  * we don't need to declare bonus again */
1006                 found = true;
1007                 break;
1008         }
1009         if (!found)
1010                 dmu_tx_hold_bonus(oh->ot_tx, obj->oo_dn->dn_object);
1011         if (oh->ot_tx->tx_err != 0)
1012                 GOTO(out, rc = -oh->ot_tx->tx_err);
1013
1014         if (attr && attr->la_valid & LA_FLAGS) {
1015                 /* LMA is usually a part of bonus, no need to declare
1016                  * anything else */
1017         }
1018
1019         if (attr && (attr->la_valid & (LA_UID | LA_GID | LA_PROJID))) {
1020                 sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
1021                 bspace = toqb(bspace * blksize);
1022         }
1023
1024         if (attr && attr->la_valid & LA_UID) {
1025                 /* quota enforcement for user */
1026                 if (attr->la_uid != obj->oo_attr.la_uid) {
1027                         rc = qsd_transfer(env, osd->od_quota_slave,
1028                                           &oh->ot_quota_trans, USRQUOTA,
1029                                           obj->oo_attr.la_uid, attr->la_uid,
1030                                           bspace, &info->oti_qi);
1031                         if (rc)
1032                                 GOTO(out, rc);
1033                 }
1034         }
1035         if (attr && attr->la_valid & LA_GID) {
1036                 /* quota enforcement for group */
1037                 if (attr->la_gid != obj->oo_attr.la_gid) {
1038                         rc = qsd_transfer(env, osd->od_quota_slave,
1039                                           &oh->ot_quota_trans, GRPQUOTA,
1040                                           obj->oo_attr.la_gid, attr->la_gid,
1041                                           bspace, &info->oti_qi);
1042                         if (rc)
1043                                 GOTO(out, rc);
1044                 }
1045         }
1046 #ifdef ZFS_PROJINHERIT
1047         if (attr && attr->la_valid & LA_PROJID) {
1048                 if (!osd->od_projectused_dn)
1049                         GOTO(out, rc = -EOPNOTSUPP);
1050
1051                 /* Usually, if project quota is upgradable for the device,
1052                  * then the upgrade will be done before or when mount the
1053                  * device. So when we come here, this project should have
1054                  * project ID attribute already (that is zero by default).
1055                  * Otherwise, there was something wrong during the former
1056                  * upgrade, let's return failure to report that.
1057                  *
1058                  * Please note that, different from other attributes, you
1059                  * can NOT simply set the project ID attribute under such
1060                  * case, because adding (NOT change) project ID attribute
1061                  * needs to change the object's attribute layout to match
1062                  * zfs backend quota accounting requirement. */
1063                 if (unlikely(!obj->oo_with_projid))
1064                         GOTO(out, rc = -ENXIO);
1065
1066                 /* quota enforcement for project */
1067                 if (attr->la_projid != obj->oo_attr.la_projid) {
1068                         rc = qsd_transfer(env, osd->od_quota_slave,
1069                                           &oh->ot_quota_trans, PRJQUOTA,
1070                                           obj->oo_attr.la_projid,
1071                                           attr->la_projid, bspace,
1072                                           &info->oti_qi);
1073                         if (rc)
1074                                 GOTO(out, rc);
1075                 }
1076         }
1077 #endif
1078 out:
1079         up_read(&obj->oo_guard);
1080         RETURN(rc);
1081 }
1082
1083 /*
1084  * Set the attributes of an object
1085  *
1086  * The transaction passed to this routine must have
1087  * dmu_tx_hold_bonus(tx, oid) called and then assigned
1088  * to a transaction group.
1089  */
1090 static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
1091                         const struct lu_attr *la, struct thandle *handle)
1092 {
1093         struct osd_thread_info  *info = osd_oti_get(env);
1094         sa_bulk_attr_t          *bulk = osd_oti_get(env)->oti_attr_bulk;
1095         struct osd_object       *obj = osd_dt_obj(dt);
1096         struct osd_device       *osd = osd_obj2dev(obj);
1097         struct osd_thandle      *oh;
1098         struct osa_attr         *osa = &info->oti_osa;
1099         __u64                    valid = la->la_valid;
1100         int                      cnt;
1101         int                      rc = 0;
1102
1103         ENTRY;
1104
1105         down_read(&obj->oo_guard);
1106         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
1107                 GOTO(out, rc = -ENOENT);
1108
1109         LASSERT(handle != NULL);
1110         LASSERT(osd_invariant(obj));
1111         LASSERT(obj->oo_sa_hdl);
1112
1113         oh = container_of0(handle, struct osd_thandle, ot_super);
1114         /* Assert that the transaction has been assigned to a
1115            transaction group. */
1116         LASSERT(oh->ot_tx->tx_txg != 0);
1117
1118         /* Only allow set size for regular file */
1119         if (!S_ISREG(dt->do_lu.lo_header->loh_attr))
1120                 valid &= ~(LA_SIZE | LA_BLOCKS);
1121
1122         if (valid & LA_CTIME && la->la_ctime == obj->oo_attr.la_ctime)
1123                 valid &= ~LA_CTIME;
1124
1125         if (valid & LA_MTIME && la->la_mtime == obj->oo_attr.la_mtime)
1126                 valid &= ~LA_MTIME;
1127
1128         if (valid & LA_ATIME && la->la_atime == obj->oo_attr.la_atime)
1129                 valid &= ~LA_ATIME;
1130
1131         if (valid == 0)
1132                 GOTO(out, rc = 0);
1133
1134         if (valid & LA_FLAGS) {
1135                 struct lustre_mdt_attrs *lma;
1136                 struct lu_buf buf;
1137
1138                 if (la->la_flags & LUSTRE_LMA_FL_MASKS) {
1139                         LASSERT(!obj->oo_pfid_in_lma);
1140                         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
1141                         lma = (struct lustre_mdt_attrs *)&info->oti_buf;
1142                         buf.lb_buf = lma;
1143                         buf.lb_len = sizeof(info->oti_buf);
1144                         rc = osd_xattr_get(env, &obj->oo_dt, &buf,
1145                                            XATTR_NAME_LMA);
1146                         if (rc > 0) {
1147                                 lma->lma_incompat =
1148                                         le32_to_cpu(lma->lma_incompat);
1149                                 lma->lma_incompat |=
1150                                         lustre_to_lma_flags(la->la_flags);
1151                                 lma->lma_incompat =
1152                                         cpu_to_le32(lma->lma_incompat);
1153                                 buf.lb_buf = lma;
1154                                 buf.lb_len = sizeof(*lma);
1155                                 rc = osd_xattr_set_internal(env, obj, &buf,
1156                                                             XATTR_NAME_LMA,
1157                                                             LU_XATTR_REPLACE,
1158                                                             oh);
1159                         }
1160                         if (rc < 0) {
1161                                 CWARN("%s: failed to set LMA flags: rc = %d\n",
1162                                        osd->od_svname, rc);
1163                                 GOTO(out, rc);
1164                         }
1165                 }
1166         }
1167
1168         write_lock(&obj->oo_attr_lock);
1169         cnt = 0;
1170
1171         if (valid & LA_PROJID) {
1172 #ifdef ZFS_PROJINHERIT
1173                 /* osd_declare_attr_set() must be called firstly.
1174                  * If osd::od_projectused_dn is not set, then we
1175                  * can not arrive at here. */
1176                 LASSERT(osd->od_projectused_dn);
1177                 LASSERT(obj->oo_with_projid);
1178
1179                 osa->projid = obj->oo_attr.la_projid = la->la_projid;
1180                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PROJID(osd), NULL,
1181                                  &osa->projid, 8);
1182 #else
1183                 valid &= ~LA_PROJID;
1184 #endif
1185         }
1186
1187         if (valid & LA_ATIME) {
1188                 osa->atime[0] = obj->oo_attr.la_atime = la->la_atime;
1189                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL,
1190                                  osa->atime, 16);
1191         }
1192         if (valid & LA_MTIME) {
1193                 osa->mtime[0] = obj->oo_attr.la_mtime = la->la_mtime;
1194                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL,
1195                                  osa->mtime, 16);
1196         }
1197         if (valid & LA_CTIME) {
1198                 osa->ctime[0] = obj->oo_attr.la_ctime = la->la_ctime;
1199                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL,
1200                                  osa->ctime, 16);
1201         }
1202         if (valid & LA_MODE) {
1203                 /* mode is stored along with type, so read it first */
1204                 obj->oo_attr.la_mode = (obj->oo_attr.la_mode & S_IFMT) |
1205                         (la->la_mode & ~S_IFMT);
1206                 osa->mode = obj->oo_attr.la_mode;
1207                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL,
1208                                  &osa->mode, 8);
1209         }
1210         if (valid & LA_SIZE) {
1211                 osa->size = obj->oo_attr.la_size = la->la_size;
1212                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL,
1213                                  &osa->size, 8);
1214         }
1215         if (valid & LA_NLINK) {
1216                 osa->nlink = obj->oo_attr.la_nlink = la->la_nlink;
1217                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL,
1218                                  &osa->nlink, 8);
1219         }
1220         if (valid & LA_RDEV) {
1221                 osa->rdev = obj->oo_attr.la_rdev = la->la_rdev;
1222                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL,
1223                                  &osa->rdev, 8);
1224         }
1225         if (valid & LA_FLAGS) {
1226                 osa->flags = attrs_fs2zfs(la->la_flags);
1227                 /* many flags are not supported by zfs, so ensure a good cached
1228                  * copy */
1229                 obj->oo_attr.la_flags = attrs_zfs2fs(osa->flags);
1230 #ifdef ZFS_PROJINHERIT
1231                 if (obj->oo_with_projid)
1232                         osa->flags |= ZFS_PROJID;
1233 #endif
1234                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL,
1235                                  &osa->flags, 8);
1236         }
1237         if (valid & LA_UID) {
1238                 osa->uid = obj->oo_attr.la_uid = la->la_uid;
1239                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL,
1240                                  &osa->uid, 8);
1241         }
1242         if (valid & LA_GID) {
1243                 osa->gid = obj->oo_attr.la_gid = la->la_gid;
1244                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL,
1245                                  &osa->gid, 8);
1246         }
1247         obj->oo_attr.la_valid |= valid;
1248         write_unlock(&obj->oo_attr_lock);
1249
1250         LASSERT(cnt <= ARRAY_SIZE(osd_oti_get(env)->oti_attr_bulk));
1251         rc = osd_object_sa_bulk_update(obj, bulk, cnt, oh);
1252
1253 out:
1254         up_read(&obj->oo_guard);
1255         RETURN(rc);
1256 }
1257
1258 /*
1259  * Object creation.
1260  *
1261  * XXX temporary solution.
1262  */
1263
1264 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1265                         struct dt_object *parent, struct dt_object *child,
1266                         umode_t child_mode)
1267 {
1268         LASSERT(ah);
1269
1270         ah->dah_parent = parent;
1271         ah->dah_mode = child_mode;
1272
1273         if (parent != NULL && !dt_object_remote(parent)) {
1274                 /* will help to find FID->ino at dt_insert("..") */
1275                 struct osd_object *pobj = osd_dt_obj(parent);
1276
1277                 osd_idc_find_and_init(env, osd_obj2dev(pobj), pobj);
1278         }
1279 }
1280
1281 static int osd_declare_create(const struct lu_env *env, struct dt_object *dt,
1282                               struct lu_attr *attr,
1283                               struct dt_allocation_hint *hint,
1284                               struct dt_object_format *dof,
1285                               struct thandle *handle)
1286 {
1287         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1288         struct osd_object       *obj = osd_dt_obj(dt);
1289         struct osd_device       *osd = osd_obj2dev(obj);
1290         struct osd_thandle      *oh;
1291         uint64_t                 zapid;
1292         dnode_t                 *dn;
1293         int                      rc, dnode_size;
1294         ENTRY;
1295
1296         LASSERT(dof);
1297
1298         switch (dof->dof_type) {
1299                 case DFT_REGULAR:
1300                 case DFT_SYM:
1301                 case DFT_NODE:
1302                         if (obj->oo_dt.do_body_ops == NULL)
1303                                 obj->oo_dt.do_body_ops = &osd_body_ops;
1304                         break;
1305                 default:
1306                         break;
1307         }
1308
1309         LASSERT(handle != NULL);
1310         oh = container_of0(handle, struct osd_thandle, ot_super);
1311         LASSERT(oh->ot_tx != NULL);
1312
1313         /* this is the minimum set of EAs on every Lustre object */
1314         obj->oo_ea_in_bonus = OSD_BASE_EA_IN_BONUS;
1315         /* reserve 32 bytes for extra stuff like ACLs */
1316         dnode_size = size_roundup_power2(obj->oo_ea_in_bonus + 32);
1317
1318         switch (dof->dof_type) {
1319                 case DFT_DIR:
1320                         dt->do_index_ops = &osd_dir_ops;
1321                 case DFT_INDEX:
1322                         /* for zap create */
1323                         dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, FALSE, NULL);
1324                         dmu_tx_hold_sa_create(oh->ot_tx, dnode_size);
1325                         break;
1326                 case DFT_REGULAR:
1327                 case DFT_SYM:
1328                 case DFT_NODE:
1329                         /* first, we'll create new object */
1330                         dmu_tx_hold_sa_create(oh->ot_tx, dnode_size);
1331                         break;
1332
1333                 default:
1334                         LBUG();
1335                         break;
1336         }
1337
1338         /* and we'll add it to some mapping */
1339         zapid = osd_get_name_n_idx(env, osd, fid, NULL, 0, &dn);
1340         osd_tx_hold_zap(oh->ot_tx, zapid, dn, TRUE, NULL);
1341
1342         /* will help to find FID->ino mapping at dt_insert() */
1343         osd_idc_find_and_init(env, osd, obj);
1344
1345         rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid,
1346                                attr->la_projid, 1, oh, NULL, OSD_QID_INODE);
1347
1348         RETURN(rc);
1349 }
1350
1351 int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
1352                     struct osd_object *obj, sa_handle_t *sa_hdl, dmu_tx_t *tx,
1353                     struct lu_attr *la, uint64_t parent,
1354                     nvlist_t *xattr)
1355 {
1356         sa_bulk_attr_t  *bulk = osd_oti_get(env)->oti_attr_bulk;
1357         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
1358         uint64_t         gen;
1359         uint64_t         crtime[2];
1360         timestruc_t      now;
1361         int              cnt;
1362         int              rc;
1363         char *dxattr = NULL;
1364         size_t sa_size;
1365
1366
1367         LASSERT(sa_hdl);
1368
1369         gen = dmu_tx_get_txg(tx);
1370         gethrestime(&now);
1371         ZFS_TIME_ENCODE(&now, crtime);
1372
1373         osa->atime[0] = la->la_atime;
1374         osa->ctime[0] = la->la_ctime;
1375         osa->mtime[0] = la->la_mtime;
1376         osa->mode = la->la_mode;
1377         osa->uid = la->la_uid;
1378         osa->gid = la->la_gid;
1379         osa->rdev = la->la_rdev;
1380         osa->nlink = la->la_nlink;
1381         if (la->la_valid & LA_FLAGS)
1382                 osa->flags = attrs_fs2zfs(la->la_flags);
1383         else
1384                 osa->flags = 0;
1385         osa->size  = la->la_size;
1386 #ifdef ZFS_PROJINHERIT
1387         if (osd->od_projectused_dn) {
1388                 if (la->la_valid & LA_PROJID)
1389                         osa->projid = la->la_projid;
1390                 else
1391                         osa->projid = ZFS_DEFAULT_PROJID;
1392                 osa->flags |= ZFS_PROJID;
1393                 if (obj)
1394                         obj->oo_with_projid = 1;
1395         } else {
1396                 osa->flags &= ~ZFS_PROJID;
1397         }
1398 #endif
1399
1400         /*
1401          * we need to create all SA below upon object create.
1402          *
1403          * XXX The attribute order matters since the accounting callback relies
1404          * on static offsets (i.e. SA_*_OFFSET, see zfs_space_delta_cb()) to
1405          * look up the UID/GID/PROJID attributes. Moreover, the callback does
1406          * not seem to support the spill block.
1407          * We define attributes in the same order as SA_*_OFFSET in order to
1408          * work around the problem. See ORI-610.
1409          */
1410         cnt = 0;
1411         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL, &osa->mode, 8);
1412         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL, &osa->size, 8);
1413         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(osd), NULL, &gen, 8);
1414         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL, &osa->uid, 8);
1415         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL, &osa->gid, 8);
1416         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(osd), NULL, &parent, 8);
1417         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL, &osa->flags, 8);
1418         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL, osa->atime, 16);
1419         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL, osa->mtime, 16);
1420         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL, osa->ctime, 16);
1421         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, crtime, 16);
1422         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL, &osa->nlink, 8);
1423 #ifdef ZFS_PROJINHERIT
1424         if (osd->od_projectused_dn)
1425                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PROJID(osd), NULL,
1426                                  &osa->projid, 8);
1427 #endif
1428         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL, &osa->rdev, 8);
1429         LASSERT(cnt <= ARRAY_SIZE(osd_oti_get(env)->oti_attr_bulk));
1430
1431         if (xattr) {
1432                 rc = -nvlist_size(xattr, &sa_size, NV_ENCODE_XDR);
1433                 LASSERT(rc == 0);
1434
1435                 dxattr = osd_zio_buf_alloc(sa_size);
1436                 LASSERT(dxattr);
1437
1438                 rc = -nvlist_pack(xattr, &dxattr, &sa_size,
1439                                 NV_ENCODE_XDR, KM_SLEEP);
1440                 LASSERT(rc == 0);
1441
1442                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_DXATTR(osd),
1443                                 NULL, dxattr, sa_size);
1444         }
1445
1446         rc = -sa_replace_all_by_template(sa_hdl, bulk, cnt, tx);
1447         if (dxattr)
1448                 osd_zio_buf_free(dxattr, sa_size);
1449
1450         return rc;
1451 }
1452
1453 static int osd_find_new_dnode(const struct lu_env *env, dmu_tx_t *tx,
1454                               uint64_t oid, dnode_t **dnp)
1455 {
1456         dmu_tx_hold_t *txh;
1457         int rc = 0;
1458
1459         /* take dnode_t from tx to save on dnode#->dnode_t lookup */
1460         for (txh = list_tail(&tx->tx_holds); txh;
1461              txh = list_prev(&tx->tx_holds, txh)) {
1462                 dnode_t *dn = txh->txh_dnode;
1463                 dmu_buf_impl_t *db;
1464
1465                 if (dn == NULL)
1466                         continue;
1467                 if (dn->dn_object != oid)
1468                         continue;
1469                 db = dn->dn_bonus;
1470                 if (db == NULL) {
1471                         rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
1472                         if (dn->dn_bonus == NULL)
1473                                 dbuf_create_bonus(dn);
1474                         rw_exit(&dn->dn_struct_rwlock);
1475                 }
1476                 db = dn->dn_bonus;
1477                 LASSERT(db);
1478                 LASSERT(dn->dn_handle);
1479                 DB_DNODE_ENTER(db);
1480                 if (refcount_add(&db->db_holds, osd_obj_tag) == 1) {
1481                         refcount_add(&dn->dn_holds, tag);
1482                         atomic_inc_32(&dn->dn_dbufs_count);
1483                 }
1484                 *dnp = dn;
1485                 dbuf_read(db, NULL, DB_RF_MUST_SUCCEED | DB_RF_NOPREFETCH);
1486                 break;
1487         }
1488
1489         if (unlikely(*dnp == NULL))
1490                 rc = __osd_obj2dnode(tx->tx_objset, oid, dnp);
1491
1492         return rc;
1493 }
1494
1495 #ifdef HAVE_DMU_OBJECT_ALLOC_DNSIZE
1496 int osd_find_dnsize(struct osd_device *osd, int ea_in_bonus)
1497 {
1498         int dnsize;
1499
1500         if (osd->od_dnsize == ZFS_DNSIZE_AUTO) {
1501                 dnsize = DNODE_MIN_SIZE;
1502                 do {
1503                         if (DN_BONUS_SIZE(dnsize) >= ea_in_bonus + 32)
1504                                 break;
1505                         dnsize <<= 1;
1506                 } while (dnsize < DNODE_MAX_SIZE);
1507                 if (dnsize > DNODE_MAX_SIZE)
1508                         dnsize = DNODE_MAX_SIZE;
1509         } else if (osd->od_dnsize == ZFS_DNSIZE_1K) {
1510                 dnsize = 1024;
1511         } else if (osd->od_dnsize == ZFS_DNSIZE_2K) {
1512                 dnsize = 2048;
1513         } else if (osd->od_dnsize == ZFS_DNSIZE_4K) {
1514                 dnsize = 4096;
1515         } else if (osd->od_dnsize == ZFS_DNSIZE_8K) {
1516                 dnsize = 8192;
1517         } else if (osd->od_dnsize == ZFS_DNSIZE_16K) {
1518                 dnsize = 16384;
1519         } else {
1520                 dnsize = DNODE_MIN_SIZE;
1521         }
1522         return dnsize;
1523 }
1524 #endif
1525
1526 /*
1527  * The transaction passed to this routine must have
1528  * dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT) called and then assigned
1529  * to a transaction group.
1530  */
1531 int __osd_object_create(const struct lu_env *env, struct osd_device *osd,
1532                         struct osd_object *obj, const struct lu_fid *fid,
1533                         dnode_t **dnp, dmu_tx_t *tx, struct lu_attr *la)
1534 {
1535         dmu_object_type_t type = DMU_OT_PLAIN_FILE_CONTENTS;
1536         uint64_t oid;
1537         int size;
1538
1539         /* Use DMU_OTN_UINT8_METADATA for local objects so their data blocks
1540          * would get an additional ditto copy */
1541         if (unlikely(S_ISREG(la->la_mode) &&
1542                      fid_seq_is_local_file(fid_seq(fid))))
1543                 type = DMU_OTN_UINT8_METADATA;
1544
1545         /* Create a new DMU object using the default dnode size. */
1546         if (obj)
1547                 size = obj->oo_ea_in_bonus;
1548         else
1549                 size = OSD_BASE_EA_IN_BONUS;
1550         oid = osd_dmu_object_alloc(osd->od_os, type, 0,
1551                                    osd_find_dnsize(osd, size), tx);
1552
1553         LASSERT(la->la_valid & LA_MODE);
1554         la->la_size = 0;
1555         la->la_nlink = 1;
1556
1557         return osd_find_new_dnode(env, tx, oid, dnp);
1558 }
1559
1560 /*
1561  * The transaction passed to this routine must have
1562  * dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, ...) called and then assigned
1563  * to a transaction group.
1564  *
1565  * Using ZAP_FLAG_HASH64 will force the ZAP to always be a FAT ZAP.
1566  * This is fine for directories today, because storing the FID in the dirent
1567  * will also require a FAT ZAP.  If there is a new type of micro ZAP created
1568  * then we might need to re-evaluate the use of this flag and instead do
1569  * a conversion from the different internal ZAP hash formats being used. */
1570 int __osd_zap_create(const struct lu_env *env, struct osd_device *osd,
1571                      dnode_t **dnp, dmu_tx_t *tx, struct lu_attr *la,
1572                      unsigned dnsize, zap_flags_t flags)
1573 {
1574         uint64_t oid;
1575
1576         /* Assert that the transaction has been assigned to a
1577            transaction group. */
1578         LASSERT(tx->tx_txg != 0);
1579         *dnp = NULL;
1580
1581         oid = osd_zap_create_flags(osd->od_os, 0, flags | ZAP_FLAG_HASH64,
1582                                    DMU_OT_DIRECTORY_CONTENTS,
1583                                    14, /* == ZFS fzap_default_blockshift */
1584                                    DN_MAX_INDBLKSHIFT, /* indirect blockshift */
1585                                    dnsize, tx);
1586
1587         la->la_size = 2;
1588         la->la_nlink = 1;
1589
1590         return osd_find_new_dnode(env, tx, oid, dnp);
1591 }
1592
1593 static dnode_t *osd_mkidx(const struct lu_env *env, struct osd_object *obj,
1594                           struct lu_attr *la, struct osd_thandle *oh)
1595 {
1596         struct osd_device *osd = osd_obj2dev(obj);
1597         dnode_t *dn;
1598         int rc;
1599
1600         /* Index file should be created as regular file in order not to confuse
1601          * ZPL which could interpret them as directory.
1602          * We set ZAP_FLAG_UINT64_KEY to let ZFS know than we are going to use
1603          * binary keys */
1604         LASSERT(S_ISREG(la->la_mode));
1605         rc = __osd_zap_create(env, osd, &dn, oh->ot_tx, la,
1606                 osd_find_dnsize(osd, obj->oo_ea_in_bonus), ZAP_FLAG_UINT64_KEY);
1607         if (rc)
1608                 return ERR_PTR(rc);
1609         return dn;
1610 }
1611
1612 static dnode_t *osd_mkdir(const struct lu_env *env, struct osd_object *obj,
1613                           struct lu_attr *la, struct osd_thandle *oh)
1614 {
1615         struct osd_device *osd = osd_obj2dev(obj);
1616         dnode_t *dn;
1617         int rc;
1618
1619         LASSERT(S_ISDIR(la->la_mode));
1620         rc = __osd_zap_create(env, osd, &dn, oh->ot_tx, la,
1621                               osd_find_dnsize(osd, obj->oo_ea_in_bonus), 0);
1622         if (rc)
1623                 return ERR_PTR(rc);
1624         return dn;
1625 }
1626
1627 static dnode_t *osd_mkreg(const struct lu_env *env, struct osd_object *obj,
1628                           struct lu_attr *la, struct osd_thandle *oh)
1629 {
1630         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
1631         struct osd_device *osd = osd_obj2dev(obj);
1632         dnode_t *dn;
1633         int rc;
1634
1635         LASSERT(S_ISREG(la->la_mode));
1636         rc = __osd_object_create(env, osd, obj, fid, &dn, oh->ot_tx, la);
1637         if (rc)
1638                 return ERR_PTR(rc);
1639
1640         if ((fid_is_idif(fid) || fid_is_norm(fid) || fid_is_echo(fid))) {
1641                 /* The minimum block size must be at least page size otherwise
1642                  * it will break the assumption in tgt_thread_big_cache where
1643                  * the array size is PTLRPC_MAX_BRW_PAGES. It will also affect
1644                  * RDMA due to subpage transfer size */
1645                 rc = -dmu_object_set_blocksize(osd->od_os, dn->dn_object,
1646                                                PAGE_SIZE, 0, oh->ot_tx);
1647                 if (unlikely(rc)) {
1648                         CERROR("%s: can't change blocksize: %d\n",
1649                                osd->od_svname, rc);
1650                         return ERR_PTR(rc);
1651                 }
1652         }
1653
1654         return dn;
1655 }
1656
1657 static dnode_t *osd_mksym(const struct lu_env *env, struct osd_object *obj,
1658                           struct lu_attr *la, struct osd_thandle *oh)
1659 {
1660         dnode_t *dn;
1661         int rc;
1662
1663         LASSERT(S_ISLNK(la->la_mode));
1664         rc = __osd_object_create(env, osd_obj2dev(obj), obj,
1665                                  lu_object_fid(&obj->oo_dt.do_lu),
1666                                  &dn, oh->ot_tx, la);
1667         if (rc)
1668                 return ERR_PTR(rc);
1669         return dn;
1670 }
1671
1672 static dnode_t *osd_mknod(const struct lu_env *env, struct osd_object *obj,
1673                           struct lu_attr *la, struct osd_thandle *oh)
1674 {
1675         dnode_t *dn;
1676         int rc;
1677
1678         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode))
1679                 la->la_valid |= LA_RDEV;
1680
1681         rc = __osd_object_create(env, osd_obj2dev(obj), obj,
1682                                  lu_object_fid(&obj->oo_dt.do_lu),
1683                                  &dn, oh->ot_tx, la);
1684         if (rc)
1685                 return ERR_PTR(rc);
1686         return dn;
1687 }
1688
1689 typedef dnode_t *(*osd_obj_type_f)(const struct lu_env *env,
1690                                    struct osd_object *obj,
1691                                    struct lu_attr *la,
1692                                    struct osd_thandle *oh);
1693
1694 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1695 {
1696         osd_obj_type_f result;
1697
1698         switch (type) {
1699         case DFT_DIR:
1700                 result = osd_mkdir;
1701                 break;
1702         case DFT_INDEX:
1703                 result = osd_mkidx;
1704                 break;
1705         case DFT_REGULAR:
1706                 result = osd_mkreg;
1707                 break;
1708         case DFT_SYM:
1709                 result = osd_mksym;
1710                 break;
1711         case DFT_NODE:
1712                 result = osd_mknod;
1713                 break;
1714         default:
1715                 LBUG();
1716                 break;
1717         }
1718         return result;
1719 }
1720
1721 /*
1722  * Concurrency: @dt is write locked.
1723  */
1724 static int osd_create(const struct lu_env *env, struct dt_object *dt,
1725                       struct lu_attr *attr, struct dt_allocation_hint *hint,
1726                       struct dt_object_format *dof, struct thandle *th)
1727 {
1728         struct osd_thread_info  *info = osd_oti_get(env);
1729         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1730         struct zpl_direntry     *zde = &info->oti_zde.lzd_reg;
1731         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1732         struct osd_object       *obj = osd_dt_obj(dt);
1733         struct osd_device       *osd = osd_obj2dev(obj);
1734         char                    *buf = info->oti_str;
1735         struct osd_thandle      *oh;
1736         dnode_t *dn = NULL, *zdn = NULL;
1737         uint64_t                 zapid, parent = 0;
1738         int                      rc;
1739
1740         ENTRY;
1741
1742         LASSERT(!fid_is_acct(fid));
1743
1744         /* concurrent create declarations should not see
1745          * the object inconsistent (db, attr, etc).
1746          * in regular cases acquisition should be cheap */
1747         down_write(&obj->oo_guard);
1748
1749         if (unlikely(dt_object_exists(dt)))
1750                 GOTO(out, rc = -EEXIST);
1751
1752         LASSERT(osd_invariant(obj));
1753         LASSERT(dof != NULL);
1754
1755         LASSERT(th != NULL);
1756         oh = container_of0(th, struct osd_thandle, ot_super);
1757
1758         LASSERT(obj->oo_dn == NULL);
1759
1760         /* to follow ZFS on-disk format we need
1761          * to initialize parent dnode properly */
1762         if (hint != NULL && hint->dah_parent != NULL &&
1763             !dt_object_remote(hint->dah_parent))
1764                 parent = osd_dt_obj(hint->dah_parent)->oo_dn->dn_object;
1765
1766         /* we may fix some attributes, better do not change the source */
1767         obj->oo_attr = *attr;
1768         obj->oo_attr.la_valid |= LA_SIZE | LA_NLINK | LA_TYPE;
1769
1770 #ifdef ZFS_PROJINHERIT
1771         if (osd->od_projectused_dn) {
1772                 if (!(obj->oo_attr.la_valid & LA_PROJID))
1773                         obj->oo_attr.la_projid = ZFS_DEFAULT_PROJID;
1774                 obj->oo_with_projid = 1;
1775         }
1776 #endif
1777
1778         dn = osd_create_type_f(dof->dof_type)(env, obj, &obj->oo_attr, oh);
1779         if (IS_ERR(dn)) {
1780                 rc = PTR_ERR(dn);
1781                 dn = NULL;
1782                 GOTO(out, rc);
1783         }
1784
1785         zde->zde_pad = 0;
1786         zde->zde_dnode = dn->dn_object;
1787         zde->zde_type = IFTODT(attr->la_mode & S_IFMT);
1788
1789         zapid = osd_get_name_n_idx(env, osd, fid, buf,
1790                                    sizeof(info->oti_str), &zdn);
1791         rc = osd_zap_add(osd, zapid, zdn, buf, 8, 1, zde, oh->ot_tx);
1792         if (rc)
1793                 GOTO(out, rc);
1794         obj->oo_dn = dn;
1795         /* Now add in all of the "SA" attributes */
1796         rc = osd_sa_handle_get(obj);
1797         if (rc)
1798                 GOTO(out, rc);
1799
1800         rc = -nvlist_alloc(&obj->oo_sa_xattr, NV_UNIQUE_NAME, KM_SLEEP);
1801         if (rc)
1802                 GOTO(out, rc);
1803
1804         /* initialize LMA */
1805         lustre_lma_init(lma, fid, 0, 0);
1806         lustre_lma_swab(lma);
1807         rc = -nvlist_add_byte_array(obj->oo_sa_xattr, XATTR_NAME_LMA,
1808                                     (uchar_t *)lma, sizeof(*lma));
1809         if (rc)
1810                 GOTO(out, rc);
1811
1812         /* configure new osd object */
1813         obj->oo_parent = parent != 0 ? parent : zapid;
1814         obj->oo_late_attr_set = 1;
1815         rc = __osd_sa_xattr_schedule_update(env, obj, oh);
1816         if (rc)
1817                 GOTO(out, rc);
1818
1819         /* XXX: oo_lma_flags */
1820         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
1821         if (likely(!fid_is_acct(lu_object_fid(&obj->oo_dt.do_lu))))
1822                 /* no body operations for accounting objects */
1823                 obj->oo_dt.do_body_ops = &osd_body_ops;
1824
1825         osd_idc_find_and_init(env, osd, obj);
1826
1827 out:
1828         if (unlikely(rc && dn)) {
1829                 dmu_object_free(osd->od_os, dn->dn_object, oh->ot_tx);
1830                 osd_dnode_rele(dn);
1831                 obj->oo_dn = NULL;
1832         } else if (!rc) {
1833                 obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
1834         }
1835         up_write(&obj->oo_guard);
1836         RETURN(rc);
1837 }
1838
1839 static int osd_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
1840                                struct thandle *th)
1841 {
1842         return osd_declare_attr_set(env, dt, NULL, th);
1843 }
1844
1845 /*
1846  * Concurrency: @dt is write locked.
1847  */
1848 static int osd_ref_add(const struct lu_env *env, struct dt_object *dt,
1849                        struct thandle *handle)
1850 {
1851         struct osd_object       *obj = osd_dt_obj(dt);
1852         struct osd_thandle      *oh;
1853         struct osd_device       *osd = osd_obj2dev(obj);
1854         uint64_t                 nlink;
1855         int rc;
1856
1857         ENTRY;
1858
1859         down_read(&obj->oo_guard);
1860         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
1861                 GOTO(out, rc = -ENOENT);
1862
1863         LASSERT(osd_invariant(obj));
1864         LASSERT(obj->oo_sa_hdl != NULL);
1865
1866         oh = container_of0(handle, struct osd_thandle, ot_super);
1867
1868         write_lock(&obj->oo_attr_lock);
1869         nlink = ++obj->oo_attr.la_nlink;
1870         write_unlock(&obj->oo_attr_lock);
1871
1872         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1873
1874 out:
1875         up_read(&obj->oo_guard);
1876         RETURN(rc);
1877 }
1878
1879 static int osd_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
1880                                struct thandle *handle)
1881 {
1882         return osd_declare_attr_set(env, dt, NULL, handle);
1883 }
1884
1885 /*
1886  * Concurrency: @dt is write locked.
1887  */
1888 static int osd_ref_del(const struct lu_env *env, struct dt_object *dt,
1889                        struct thandle *handle)
1890 {
1891         struct osd_object       *obj = osd_dt_obj(dt);
1892         struct osd_thandle      *oh;
1893         struct osd_device       *osd = osd_obj2dev(obj);
1894         uint64_t                 nlink;
1895         int                      rc;
1896
1897         ENTRY;
1898
1899         down_read(&obj->oo_guard);
1900
1901         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
1902                 GOTO(out, rc = -ENOENT);
1903
1904         LASSERT(osd_invariant(obj));
1905         LASSERT(obj->oo_sa_hdl != NULL);
1906
1907         oh = container_of0(handle, struct osd_thandle, ot_super);
1908         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
1909
1910         write_lock(&obj->oo_attr_lock);
1911         nlink = --obj->oo_attr.la_nlink;
1912         write_unlock(&obj->oo_attr_lock);
1913
1914         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1915
1916 out:
1917         up_read(&obj->oo_guard);
1918         RETURN(rc);
1919 }
1920
1921 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
1922                            __u64 start, __u64 end)
1923 {
1924         struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
1925         ENTRY;
1926
1927         /* XXX: no other option than syncing the whole filesystem until we
1928          * support ZIL.  If the object tracked the txg that it was last
1929          * modified in, it could pass that txg here instead of "0".  Maybe
1930          * the changes are already committed, so no wait is needed at all? */
1931         if (!osd->od_dt_dev.dd_rdonly)
1932                 txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
1933
1934         RETURN(0);
1935 }
1936
1937 static int osd_invalidate(const struct lu_env *env, struct dt_object *dt)
1938 {
1939         return 0;
1940 }
1941
1942 static struct dt_object_operations osd_obj_ops = {
1943         .do_read_lock           = osd_read_lock,
1944         .do_write_lock          = osd_write_lock,
1945         .do_read_unlock         = osd_read_unlock,
1946         .do_write_unlock        = osd_write_unlock,
1947         .do_write_locked        = osd_write_locked,
1948         .do_attr_get            = osd_attr_get,
1949         .do_declare_attr_set    = osd_declare_attr_set,
1950         .do_attr_set            = osd_attr_set,
1951         .do_ah_init             = osd_ah_init,
1952         .do_declare_create      = osd_declare_create,
1953         .do_create              = osd_create,
1954         .do_declare_destroy     = osd_declare_destroy,
1955         .do_destroy             = osd_destroy,
1956         .do_index_try           = osd_index_try,
1957         .do_declare_ref_add     = osd_declare_ref_add,
1958         .do_ref_add             = osd_ref_add,
1959         .do_declare_ref_del     = osd_declare_ref_del,
1960         .do_ref_del             = osd_ref_del,
1961         .do_xattr_get           = osd_xattr_get,
1962         .do_declare_xattr_set   = osd_declare_xattr_set,
1963         .do_xattr_set           = osd_xattr_set,
1964         .do_declare_xattr_del   = osd_declare_xattr_del,
1965         .do_xattr_del           = osd_xattr_del,
1966         .do_xattr_list          = osd_xattr_list,
1967         .do_object_sync         = osd_object_sync,
1968         .do_invalidate          = osd_invalidate,
1969 };
1970
1971 static struct lu_object_operations osd_lu_obj_ops = {
1972         .loo_object_init        = osd_object_init,
1973         .loo_object_delete      = osd_object_delete,
1974         .loo_object_release     = osd_object_release,
1975         .loo_object_free        = osd_object_free,
1976         .loo_object_print       = osd_object_print,
1977         .loo_object_invariant   = osd_object_invariant,
1978 };
1979
1980 static int osd_otable_it_attr_get(const struct lu_env *env,
1981                                 struct dt_object *dt,
1982                                 struct lu_attr *attr)
1983 {
1984         attr->la_valid = 0;
1985         return 0;
1986 }
1987
1988 static struct dt_object_operations osd_obj_otable_it_ops = {
1989         .do_attr_get            = osd_otable_it_attr_get,
1990         .do_index_try           = osd_index_try,
1991 };