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  * Copyright (c) 2012, 2015, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/osd-zfs/osd_object.c
  37  *
  38  * Author: Alex Zhuravlev <bzzz@whamcloud.com>
  39  * Author: Mike Pershin <tappro@whamcloud.com>
  40  * Author: Johann Lombardi <johann@whamcloud.com>
  41  */
  42
  43 #define DEBUG_SUBSYSTEM S_OSD
  44
  45 #include <lustre_ver.h>
  46 #include <libcfs/libcfs.h>
  47 #include <obd_support.h>
  48 #include <lustre_net.h>
  49 #include <obd.h>
  50 #include <obd_class.h>
  51 #include <lustre_disk.h>
  52 #include <lustre_fid.h>
  53
  54 #include "osd_internal.h"
  55
  56 #include <sys/dnode.h>
  57 #include <sys/dbuf.h>
  58 #include <sys/spa.h>
  59 #include <sys/stat.h>
  60 #include <sys/zap.h>
  61 #include <sys/spa_impl.h>
  62 #include <sys/zfs_znode.h>
  63 #include <sys/dmu_tx.h>
  64 #include <sys/dmu_objset.h>
  65 #include <sys/dsl_prop.h>
  66 #include <sys/sa_impl.h>
  67 #include <sys/txg.h>
  68
  69 char *osd_obj_tag = "osd_object";
  70
  71 static struct dt_object_operations osd_obj_ops;
  72 static struct lu_object_operations osd_lu_obj_ops;
  73 extern struct dt_body_operations osd_body_ops;
  74 static struct dt_object_operations osd_obj_otable_it_ops;
  75
  76 extern struct kmem_cache *osd_object_kmem;
  77
  78 static void
  79 osd_object_sa_fini(struct osd_object *obj)
  80 {
  81         if (obj->oo_sa_hdl) {
  82                 sa_handle_destroy(obj->oo_sa_hdl);
  83                 obj->oo_sa_hdl = NULL;
  84         }
  85 }
  86
  87 static int
  88 osd_object_sa_init(struct osd_object *obj, struct osd_device *o)
  89 {
  90         int rc;
  91
  92         LASSERT(obj->oo_sa_hdl == NULL);
  93         LASSERT(obj->oo_db != NULL);
  94
  95         rc = -sa_handle_get(o->od_os, obj->oo_db->db_object, obj,
  96                             SA_HDL_PRIVATE, &obj->oo_sa_hdl);
  97         if (rc)
  98                 return rc;
  99
 100         /* Cache the xattr object id, valid for the life of the object */
 101         rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(o), &obj->oo_xattr, 8);
 102         if (rc == -ENOENT) {
 103                 obj->oo_xattr = ZFS_NO_OBJECT;
 104                 rc = 0;
 105         } else if (rc) {
 106                 osd_object_sa_fini(obj);
 107         }
 108
 109         return rc;
 110 }
 111
 112 /*
 113  * Add object to list of dirty objects in tx handle.
 114  */
 115 static void
 116 osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
 117 {
 118         if (!list_empty(&obj->oo_sa_linkage))
 119                 return;
 120
 121         down(&oh->ot_sa_lock);
 122         write_lock(&obj->oo_attr_lock);
 123         if (likely(list_empty(&obj->oo_sa_linkage)))
 124                 list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
 125         write_unlock(&obj->oo_attr_lock);
 126         up(&oh->ot_sa_lock);
 127 }
 128
 129 /*
 130  * Release spill block dbuf hold for all dirty SAs.
 131  */
 132 void osd_object_sa_dirty_rele(struct osd_thandle *oh)
 133 {
 134         struct osd_object *obj;
 135
 136         down(&oh->ot_sa_lock);
 137         while (!list_empty(&oh->ot_sa_list)) {
 138                 obj = list_entry(oh->ot_sa_list.next,
 139                                  struct osd_object, oo_sa_linkage);
 140                 sa_spill_rele(obj->oo_sa_hdl);
 141                 write_lock(&obj->oo_attr_lock);
 142                 list_del_init(&obj->oo_sa_linkage);
 143                 write_unlock(&obj->oo_attr_lock);
 144         }
 145         up(&oh->ot_sa_lock);
 146 }
 147
 148 /*
 149  * Update the SA and add the object to the dirty list.
 150  */
 151 int osd_object_sa_update(struct osd_object *obj, sa_attr_type_t type,
 152                          void *buf, uint32_t buflen, struct osd_thandle *oh)
 153 {
 154         int rc;
 155
 156         LASSERT(obj->oo_sa_hdl != NULL);
 157         LASSERT(oh->ot_tx != NULL);
 158
 159         rc = -sa_update(obj->oo_sa_hdl, type, buf, buflen, oh->ot_tx);
 160         osd_object_sa_dirty_add(obj, oh);
 161
 162         return rc;
 163 }
 164
 165 /*
 166  * Bulk update the SA and add the object to the dirty list.
 167  */
 168 static int
 169 osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 170                           int count, struct osd_thandle *oh)
 171 {
 172         int rc;
 173
 174         LASSERT(obj->oo_sa_hdl != NULL);
 175         LASSERT(oh->ot_tx != NULL);
 176
 177         rc = -sa_bulk_update(obj->oo_sa_hdl, attrs, count, oh->ot_tx);
 178         osd_object_sa_dirty_add(obj, oh);
 179
 180         return rc;
 181 }
 182
 183 /*
 184  * Retrieve the attributes of a DMU object
 185  */
 186 int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
 187                           struct osd_object *obj, struct lu_attr *la)
 188 {
 189         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
 190         sa_handle_t     *sa_hdl;
 191         sa_bulk_attr_t  *bulk;
 192         int              cnt = 0;
 193         int              rc;
 194         ENTRY;
 195
 196         LASSERT(obj->oo_db != NULL);
 197
 198         rc = -sa_handle_get(o->od_os, obj->oo_db->db_object, NULL,
 199                             SA_HDL_PRIVATE, &sa_hdl);
 200         if (rc)
 201                 RETURN(rc);
 202
 203         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 9);
 204         if (bulk == NULL)
 205                 GOTO(out_sa, rc = -ENOMEM);
 206
 207         la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
 208                         LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
 209
 210         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(o), NULL, osa->atime, 16);
 211         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(o), NULL, osa->mtime, 16);
 212         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(o), NULL, osa->ctime, 16);
 213         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(o), NULL, &osa->mode, 8);
 214         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(o), NULL, &osa->size, 8);
 215         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(o), NULL, &osa->nlink, 8);
 216         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(o), NULL, &osa->uid, 8);
 217         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(o), NULL, &osa->gid, 8);
 218         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(o), NULL, &osa->flags, 8);
 219
 220         rc = -sa_bulk_lookup(sa_hdl, bulk, cnt);
 221         if (rc)
 222                 GOTO(out_bulk, rc);
 223
 224         la->la_atime = osa->atime[0];
 225         la->la_mtime = osa->mtime[0];
 226         la->la_ctime = osa->ctime[0];
 227         la->la_mode = osa->mode;
 228         la->la_uid = osa->uid;
 229         la->la_gid = osa->gid;
 230         la->la_nlink = osa->nlink;
 231         la->la_flags = attrs_zfs2fs(osa->flags);
 232         la->la_size = osa->size;
 233
 234         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
 235                 rc = -sa_lookup(sa_hdl, SA_ZPL_RDEV(o), &osa->rdev, 8);
 236                 if (rc)
 237                         GOTO(out_bulk, rc);
 238                 la->la_rdev = osa->rdev;
 239                 la->la_valid |= LA_RDEV;
 240         }
 241 out_bulk:
 242         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 9);
 243 out_sa:
 244         sa_handle_destroy(sa_hdl);
 245
 246         RETURN(rc);
 247 }
 248
 249 int __osd_obj2dbuf(const struct lu_env *env, objset_t *os,
 250                    uint64_t oid, dmu_buf_t **dbp)
 251 {
 252         dmu_object_info_t *doi = &osd_oti_get(env)->oti_doi;
 253         int rc;
 254
 255         rc = -sa_buf_hold(os, oid, osd_obj_tag, dbp);
 256         if (rc)
 257                 return rc;
 258
 259         dmu_object_info_from_db(*dbp, doi);
 260         if (unlikely (oid != DMU_USERUSED_OBJECT &&
 261             oid != DMU_GROUPUSED_OBJECT && doi->doi_bonus_type != DMU_OT_SA)) {
 262                 sa_buf_rele(*dbp, osd_obj_tag);
 263                 *dbp = NULL;
 264                 return -EINVAL;
 265         }
 266
 267         LASSERT(*dbp);
 268         LASSERT((*dbp)->db_object == oid);
 269         LASSERT((*dbp)->db_offset == -1);
 270         LASSERT((*dbp)->db_data != NULL);
 271
 272         return 0;
 273 }
 274
 275 /*
 276  * Concurrency: no concurrent access is possible that early in object
 277  * life-cycle.
 278  */
 279 struct lu_object *osd_object_alloc(const struct lu_env *env,
 280                                    const struct lu_object_header *hdr,
 281                                    struct lu_device *d)
 282 {
 283         struct osd_object *mo;
 284
 285         OBD_SLAB_ALLOC_PTR_GFP(mo, osd_object_kmem, GFP_NOFS);
 286         if (mo != NULL) {
 287                 struct lu_object *l;
 288
 289                 l = &mo->oo_dt.do_lu;
 290                 dt_object_init(&mo->oo_dt, NULL, d);
 291                 mo->oo_dt.do_ops = &osd_obj_ops;
 292                 l->lo_ops = &osd_lu_obj_ops;
 293                 INIT_LIST_HEAD(&mo->oo_sa_linkage);
 294                 INIT_LIST_HEAD(&mo->oo_unlinked_linkage);
 295                 init_rwsem(&mo->oo_sem);
 296                 sema_init(&mo->oo_guard, 1);
 297                 rwlock_init(&mo->oo_attr_lock);
 298                 mo->oo_destroy = OSD_DESTROY_NONE;
 299                 return l;
 300         } else {
 301                 return NULL;
 302         }
 303 }
 304
 305 /*
 306  * Concurrency: shouldn't matter.
 307  */
 308 int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 309 {
 310         struct osd_device       *osd = osd_obj2dev(obj);
 311         const struct lu_fid     *fid = lu_object_fid(&obj->oo_dt.do_lu);
 312         int                      rc = 0;
 313         ENTRY;
 314
 315         if (obj->oo_db == NULL)
 316                 RETURN(0);
 317
 318         /* object exist */
 319
 320         rc = osd_object_sa_init(obj, osd);
 321         if (rc)
 322                 RETURN(rc);
 323
 324         /* cache attrs in object */
 325         rc = __osd_object_attr_get(env, osd, obj, &obj->oo_attr);
 326         if (rc)
 327                 RETURN(rc);
 328
 329         if (likely(!fid_is_acct(fid)))
 330                 /* no body operations for accounting objects */
 331                 obj->oo_dt.do_body_ops = &osd_body_ops;
 332
 333         /*
 334          * initialize object before marking it existing
 335          */
 336         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
 337
 338         smp_mb();
 339         obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
 340
 341         RETURN(0);
 342 }
 343
 344 static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
 345 {
 346         struct osd_thread_info  *info = osd_oti_get(env);
 347         struct lu_buf           buf;
 348         int                     rc;
 349         struct lustre_mdt_attrs *lma;
 350         ENTRY;
 351
 352         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
 353         lma = (struct lustre_mdt_attrs *)info->oti_buf;
 354         buf.lb_buf = lma;
 355         buf.lb_len = sizeof(info->oti_buf);
 356
 357         rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 358         if (rc > 0) {
 359                 rc = 0;
 360                 lustre_lma_swab(lma);
 361                 if (unlikely((lma->lma_incompat & ~LMA_INCOMPAT_SUPP) ||
 362                              CFS_FAIL_CHECK(OBD_FAIL_OSD_LMA_INCOMPAT))) {
 363                         CWARN("%s: unsupported incompat LMA feature(s) %#x for "
 364                               "fid = "DFID"\n", osd_obj2dev(obj)->od_svname,
 365                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 366                               PFID(lu_object_fid(&obj->oo_dt.do_lu)));
 367                         rc = -EOPNOTSUPP;
 368                 }
 369         } else if (rc == -ENODATA) {
 370                 /* haven't initialize LMA xattr */
 371                 rc = 0;
 372         }
 373
 374         RETURN(rc);
 375 }
 376
 377 /*
 378  * Concurrency: no concurrent access is possible that early in object
 379  * life-cycle.
 380  */
 381 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 382                            const struct lu_object_conf *conf)
 383 {
 384         struct osd_object       *obj = osd_obj(l);
 385         struct osd_device       *osd = osd_obj2dev(obj);
 386         uint64_t                 oid;
 387         int                      rc;
 388         ENTRY;
 389
 390         LASSERT(osd_invariant(obj));
 391
 392         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 393                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 394                 l->lo_header->loh_attr |= LOHA_EXISTS;
 395                 RETURN(0);
 396         }
 397
 398         rc = osd_fid_lookup(env, osd, lu_object_fid(l), &oid);
 399         if (rc == 0) {
 400                 LASSERT(obj->oo_db == NULL);
 401                 rc = __osd_obj2dbuf(env, osd->od_os, oid, &obj->oo_db);
 402                 if (rc != 0) {
 403                         CERROR("%s: lookup "DFID"/"LPX64" failed: rc = %d\n",
 404                                osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
 405                         GOTO(out, rc);
 406                 }
 407                 LASSERT(obj->oo_db);
 408                 rc = osd_object_init0(env, obj);
 409                 if (rc != 0)
 410                         GOTO(out, rc);
 411
 412                 rc = osd_check_lma(env, obj);
 413                 if (rc != 0)
 414                         GOTO(out, rc);
 415         } else if (rc == -ENOENT) {
 416                 rc = 0;
 417         }
 418         LASSERT(osd_invariant(obj));
 419 out:
 420         RETURN(rc);
 421 }
 422
 423 /*
 424  * Concurrency: no concurrent access is possible that late in object
 425  * life-cycle.
 426  */
 427 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 428 {
 429         struct osd_object *obj = osd_obj(l);
 430
 431         LASSERT(osd_invariant(obj));
 432
 433         dt_object_fini(&obj->oo_dt);
 434         OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
 435 }
 436
 437 static int
 438 osd_object_unlinked_add(struct osd_object *obj, struct osd_thandle *oh)
 439 {
 440         int rc = -EBUSY;
 441
 442         down(&obj->oo_guard);
 443
 444         LASSERT(obj->oo_destroy == OSD_DESTROY_ASYNC);
 445
 446         if (likely(list_empty(&obj->oo_unlinked_linkage))) {
 447                 list_add(&obj->oo_unlinked_linkage, &oh->ot_unlinked_list);
 448                 rc = 0;
 449         }
 450
 451         up(&obj->oo_guard);
 452
 453         return rc;
 454 }
 455
 456 /* Default to max data size covered by a level-1 indirect block */
 457 static unsigned long osd_sync_destroy_max_size =
 458         1UL << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT + SPA_MAXBLOCKSHIFT);
 459 CFS_MODULE_PARM(osd_sync_destroy_max_size, "ul", ulong, 0444,
 460                 "Maximum object size to use synchronous destroy.");
 461
 462 static inline void
 463 osd_object_set_destroy_type(struct osd_object *obj)
 464 {
 465         /*
 466          * Lock-less OST_WRITE can race with OST_DESTROY, so set destroy type
 467          * only once and use it consistently thereafter.
 468          */
 469         down(&obj->oo_guard);
 470         if (obj->oo_destroy == OSD_DESTROY_NONE) {
 471                 if (obj->oo_attr.la_size <= osd_sync_destroy_max_size)
 472                         obj->oo_destroy = OSD_DESTROY_SYNC;
 473                 else /* Larger objects are destroyed asynchronously */
 474                         obj->oo_destroy = OSD_DESTROY_ASYNC;
 475         }
 476         up(&obj->oo_guard);
 477 }
 478
 479 static int osd_declare_object_destroy(const struct lu_env *env,
 480                                       struct dt_object *dt,
 481                                       struct thandle *th)
 482 {
 483         char                    *buf = osd_oti_get(env)->oti_str;
 484         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 485         struct osd_object       *obj = osd_dt_obj(dt);
 486         struct osd_device       *osd = osd_obj2dev(obj);
 487         struct osd_thandle      *oh;
 488         int                      rc;
 489         uint64_t                 zapid;
 490         ENTRY;
 491
 492         LASSERT(th != NULL);
 493         LASSERT(dt_object_exists(dt));
 494
 495         oh = container_of0(th, struct osd_thandle, ot_super);
 496         LASSERT(oh->ot_tx != NULL);
 497
 498         /* declare that we'll remove object from fid-dnode mapping */
 499         zapid = osd_get_name_n_idx(env, osd, fid, buf);
 500         dmu_tx_hold_bonus(oh->ot_tx, zapid);
 501         dmu_tx_hold_zap(oh->ot_tx, zapid, FALSE, buf);
 502
 503         osd_declare_xattrs_destroy(env, obj, oh);
 504
 505         /* declare that we'll remove object from inode accounting ZAPs */
 506         dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
 507         dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, FALSE, buf);
 508         dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
 509         dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, FALSE, buf);
 510
 511         /* one less inode */
 512         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 513                                obj->oo_attr.la_gid, -1, oh, false, NULL, false);
 514         if (rc)
 515                 RETURN(rc);
 516
 517         /* data to be truncated */
 518         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 519                                obj->oo_attr.la_gid, 0, oh, true, NULL, false);
 520         if (rc)
 521                 RETURN(rc);
 522
 523         osd_object_set_destroy_type(obj);
 524         if (obj->oo_destroy == OSD_DESTROY_SYNC)
 525                 dmu_tx_hold_free(oh->ot_tx, obj->oo_db->db_object,
 526                                  0, DMU_OBJECT_END);
 527         else
 528                 dmu_tx_hold_zap(oh->ot_tx, osd->od_unlinkedid, TRUE, NULL);
 529
 530         RETURN(0);
 531 }
 532
 533 static int osd_object_destroy(const struct lu_env *env,
 534                               struct dt_object *dt, struct thandle *th)
 535 {
 536         char                    *buf = osd_oti_get(env)->oti_str;
 537         struct osd_object       *obj = osd_dt_obj(dt);
 538         struct osd_device       *osd = osd_obj2dev(obj);
 539         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 540         struct osd_thandle      *oh;
 541         int                      rc;
 542         uint64_t                 oid, zapid;
 543         ENTRY;
 544
 545         LASSERT(obj->oo_db != NULL);
 546         LASSERT(dt_object_exists(dt));
 547         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
 548
 549         oh = container_of0(th, struct osd_thandle, ot_super);
 550         LASSERT(oh != NULL);
 551         LASSERT(oh->ot_tx != NULL);
 552
 553         /* remove obj ref from index dir (it depends) */
 554         zapid = osd_get_name_n_idx(env, osd, fid, buf);
 555         rc = -zap_remove(osd->od_os, zapid, buf, oh->ot_tx);
 556         if (rc) {
 557                 CERROR("%s: zap_remove(%s) failed: rc = %d\n",
 558                        osd->od_svname, buf, rc);
 559                 GOTO(out, rc);
 560         }
 561
 562         rc = osd_xattrs_destroy(env, obj, oh);
 563         if (rc) {
 564                 CERROR("%s: cannot destroy xattrs for %s: rc = %d\n",
 565                        osd->od_svname, buf, rc);
 566                 GOTO(out, rc);
 567         }
 568
 569         /* Remove object from inode accounting. It is not fatal for the destroy
 570          * operation if something goes wrong while updating accounting, but we
 571          * still log an error message to notify the administrator */
 572         rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
 573                                 obj->oo_attr.la_uid, -1, oh->ot_tx);
 574         if (rc)
 575                 CERROR("%s: failed to remove "DFID" from accounting ZAP for usr"
 576                        " %d: rc = %d\n", osd->od_svname, PFID(fid),
 577                        obj->oo_attr.la_uid, rc);
 578         rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
 579                                 obj->oo_attr.la_gid, -1, oh->ot_tx);
 580         if (rc)
 581                 CERROR("%s: failed to remove "DFID" from accounting ZAP for grp"
 582                        " %d: rc = %d\n", osd->od_svname, PFID(fid),
 583                        obj->oo_attr.la_gid, rc);
 584
 585         oid = obj->oo_db->db_object;
 586         if (unlikely(obj->oo_destroy == OSD_DESTROY_NONE)) {
 587                 /* this may happen if the destroy wasn't declared
 588                  * e.g. when the object is created and then destroyed
 589                  * in the same transaction - we don't need additional
 590                  * space for destroy specifically */
 591                 LASSERT(obj->oo_attr.la_size <= osd_sync_destroy_max_size);
 592                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 593                 if (rc)
 594                         CERROR("%s: failed to free %s "LPU64": rc = %d\n",
 595                                osd->od_svname, buf, oid, rc);
 596         } else if (obj->oo_destroy == OSD_DESTROY_SYNC) {
 597                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 598                 if (rc)
 599                         CERROR("%s: failed to free %s "LPU64": rc = %d\n",
 600                                osd->od_svname, buf, oid, rc);
 601         } else { /* asynchronous destroy */
 602                 rc = osd_object_unlinked_add(obj, oh);
 603                 if (rc)
 604                         GOTO(out, rc);
 605
 606                 rc = -zap_add_int(osd->od_os, osd->od_unlinkedid,
 607                                   oid, oh->ot_tx);
 608                 if (rc)
 609                         CERROR("%s: zap_add_int() failed %s "LPU64": rc = %d\n",
 610                                osd->od_svname, buf, oid, rc);
 611         }
 612
 613 out:
 614         /* not needed in the cache anymore */
 615         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
 616         if (rc == 0)
 617                 obj->oo_destroyed = 1;
 618         RETURN (0);
 619 }
 620
 621 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 622 {
 623         struct osd_object *obj = osd_obj(l);
 624
 625         if (obj->oo_db != NULL) {
 626                 osd_object_sa_fini(obj);
 627                 if (obj->oo_sa_xattr) {
 628                         nvlist_free(obj->oo_sa_xattr);
 629                         obj->oo_sa_xattr = NULL;
 630                 }
 631                 sa_buf_rele(obj->oo_db, osd_obj_tag);
 632                 list_del(&obj->oo_sa_linkage);
 633                 obj->oo_db = NULL;
 634         }
 635 }
 636
 637 /*
 638  * Concurrency: ->loo_object_release() is called under site spin-lock.
 639  */
 640 static void osd_object_release(const struct lu_env *env,
 641                                struct lu_object *l)
 642 {
 643 }
 644
 645 /*
 646  * Concurrency: shouldn't matter.
 647  */
 648 static int osd_object_print(const struct lu_env *env, void *cookie,
 649                             lu_printer_t p, const struct lu_object *l)
 650 {
 651         struct osd_object *o = osd_obj(l);
 652
 653         return (*p)(env, cookie, LUSTRE_OSD_ZFS_NAME"-object@%p", o);
 654 }
 655
 656 static void osd_object_read_lock(const struct lu_env *env,
 657                                  struct dt_object *dt, unsigned role)
 658 {
 659         struct osd_object *obj = osd_dt_obj(dt);
 660
 661         LASSERT(osd_invariant(obj));
 662
 663         down_read_nested(&obj->oo_sem, role);
 664 }
 665
 666 static void osd_object_write_lock(const struct lu_env *env,
 667                                   struct dt_object *dt, unsigned role)
 668 {
 669         struct osd_object *obj = osd_dt_obj(dt);
 670
 671         LASSERT(osd_invariant(obj));
 672
 673         down_write_nested(&obj->oo_sem, role);
 674 }
 675
 676 static void osd_object_read_unlock(const struct lu_env *env,
 677                                    struct dt_object *dt)
 678 {
 679         struct osd_object *obj = osd_dt_obj(dt);
 680
 681         LASSERT(osd_invariant(obj));
 682         up_read(&obj->oo_sem);
 683 }
 684
 685 static void osd_object_write_unlock(const struct lu_env *env,
 686                                     struct dt_object *dt)
 687 {
 688         struct osd_object *obj = osd_dt_obj(dt);
 689
 690         LASSERT(osd_invariant(obj));
 691         up_write(&obj->oo_sem);
 692 }
 693
 694 static int osd_object_write_locked(const struct lu_env *env,
 695                                    struct dt_object *dt)
 696 {
 697         struct osd_object *obj = osd_dt_obj(dt);
 698         int rc = 1;
 699
 700         LASSERT(osd_invariant(obj));
 701
 702         if (down_write_trylock(&obj->oo_sem)) {
 703                 rc = 0;
 704                 up_write(&obj->oo_sem);
 705         }
 706         return rc;
 707 }
 708
 709 static int osd_attr_get(const struct lu_env *env,
 710                         struct dt_object *dt,
 711                         struct lu_attr *attr)
 712 {
 713         struct osd_object       *obj = osd_dt_obj(dt);
 714         uint64_t                 blocks;
 715         uint32_t                 blksize;
 716
 717         LASSERT(dt_object_exists(dt));
 718         LASSERT(osd_invariant(obj));
 719         LASSERT(obj->oo_db);
 720
 721         read_lock(&obj->oo_attr_lock);
 722         *attr = obj->oo_attr;
 723         read_unlock(&obj->oo_attr_lock);
 724
 725         /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
 726          * from within sa_object_size() can block on a mutex, so
 727          * we can't call sa_object_size() holding rwlock */
 728         sa_object_size(obj->oo_sa_hdl, &blksize, &blocks);
 729         /* we do not control size of indices, so always calculate
 730          * it from number of blocks reported by DMU */
 731         if (S_ISDIR(attr->la_mode))
 732                 attr->la_size = 512 * blocks;
 733         /* Block size may be not set; suggest maximal I/O transfers. */
 734         if (blksize == 0)
 735                 blksize = osd_spa_maxblocksize(
 736                         dmu_objset_spa(osd_obj2dev(obj)->od_os));
 737
 738         attr->la_blksize = blksize;
 739         attr->la_blocks = blocks;
 740         attr->la_valid |= LA_BLOCKS | LA_BLKSIZE;
 741
 742         return 0;
 743 }
 744
 745 /* Simple wrapper on top of qsd API which implement quota transfer for osd
 746  * setattr needs. As a reminder, only the root user can change ownership of
 747  * a file, that's why EDQUOT & EINPROGRESS errors are discarded */
 748 static inline int qsd_transfer(const struct lu_env *env,
 749                                struct qsd_instance *qsd,
 750                                struct lquota_trans *trans, int qtype,
 751                                __u64 orig_id, __u64 new_id, __u64 bspace,
 752                                struct lquota_id_info *qi)
 753 {
 754         int     rc;
 755
 756         if (unlikely(qsd == NULL))
 757                 return 0;
 758
 759         LASSERT(qtype >= 0 && qtype < MAXQUOTAS);
 760         qi->lqi_type = qtype;
 761
 762         /* inode accounting */
 763         qi->lqi_is_blk = false;
 764
 765         /* one more inode for the new owner ... */
 766         qi->lqi_id.qid_uid = new_id;
 767         qi->lqi_space      = 1;
 768         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 769         if (rc == -EDQUOT || rc == -EINPROGRESS)
 770                 rc = 0;
 771         if (rc)
 772                 return rc;
 773
 774         /* and one less inode for the current id */
 775         qi->lqi_id.qid_uid = orig_id;;
 776         qi->lqi_space      = -1;
 777         /* can't get EDQUOT when reducing usage */
 778         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 779         if (rc == -EINPROGRESS)
 780                 rc = 0;
 781         if (rc)
 782                 return rc;
 783
 784         /* block accounting */
 785         qi->lqi_is_blk = true;
 786
 787         /* more blocks for the new owner ... */
 788         qi->lqi_id.qid_uid = new_id;
 789         qi->lqi_space      = bspace;
 790         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 791         if (rc == -EDQUOT || rc == -EINPROGRESS)
 792                 rc = 0;
 793         if (rc)
 794                 return rc;
 795
 796         /* and finally less blocks for the current owner */
 797         qi->lqi_id.qid_uid = orig_id;
 798         qi->lqi_space      = -bspace;
 799         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 800         /* can't get EDQUOT when reducing usage */
 801         if (rc == -EINPROGRESS)
 802                 rc = 0;
 803         return rc;
 804 }
 805
 806 static int osd_declare_attr_set(const struct lu_env *env,
 807                                 struct dt_object *dt,
 808                                 const struct lu_attr *attr,
 809                                 struct thandle *handle)
 810 {
 811         struct osd_thread_info  *info = osd_oti_get(env);
 812         char                    *buf = osd_oti_get(env)->oti_str;
 813         struct osd_object       *obj = osd_dt_obj(dt);
 814         struct osd_device       *osd = osd_obj2dev(obj);
 815         struct osd_thandle      *oh;
 816         uint64_t                 bspace;
 817         uint32_t                 blksize;
 818         int                      rc;
 819         ENTRY;
 820
 821         if (!dt_object_exists(dt)) {
 822                 /* XXX: sanity check that object creation is declared */
 823                 RETURN(0);
 824         }
 825
 826         LASSERT(handle != NULL);
 827         LASSERT(osd_invariant(obj));
 828
 829         oh = container_of0(handle, struct osd_thandle, ot_super);
 830
 831         LASSERT(obj->oo_sa_hdl != NULL);
 832         LASSERT(oh->ot_tx != NULL);
 833         dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
 834         if (oh->ot_tx->tx_err != 0)
 835                 RETURN(-oh->ot_tx->tx_err);
 836
 837         sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
 838         bspace = toqb(bspace * blksize);
 839
 840         if (attr && attr->la_valid & LA_UID) {
 841                 /* account for user inode tracking ZAP update */
 842                 dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
 843                 dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
 844
 845                 /* quota enforcement for user */
 846                 if (attr->la_uid != obj->oo_attr.la_uid) {
 847                         rc = qsd_transfer(env, osd->od_quota_slave,
 848                                           &oh->ot_quota_trans, USRQUOTA,
 849                                           obj->oo_attr.la_uid, attr->la_uid,
 850                                           bspace, &info->oti_qi);
 851                         if (rc)
 852                                 RETURN(rc);
 853                 }
 854         }
 855         if (attr && attr->la_valid & LA_GID) {
 856                 /* account for user inode tracking ZAP update */
 857                 dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
 858                 dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
 859
 860                 /* quota enforcement for group */
 861                 if (attr->la_gid != obj->oo_attr.la_gid) {
 862                         rc = qsd_transfer(env, osd->od_quota_slave,
 863                                           &oh->ot_quota_trans, GRPQUOTA,
 864                                           obj->oo_attr.la_gid, attr->la_gid,
 865                                           bspace, &info->oti_qi);
 866                         if (rc)
 867                                 RETURN(rc);
 868                 }
 869         }
 870
 871         RETURN(0);
 872 }
 873
 874 /*
 875  * Set the attributes of an object
 876  *
 877  * The transaction passed to this routine must have
 878  * dmu_tx_hold_bonus(tx, oid) called and then assigned
 879  * to a transaction group.
 880  */
 881 static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
 882                         const struct lu_attr *la, struct thandle *handle)
 883 {
 884         struct osd_object       *obj = osd_dt_obj(dt);
 885         struct osd_device       *osd = osd_obj2dev(obj);
 886         struct osd_thandle      *oh;
 887         struct osa_attr         *osa = &osd_oti_get(env)->oti_osa;
 888         sa_bulk_attr_t          *bulk;
 889         __u64                    valid = la->la_valid;
 890         int                      cnt;
 891         int                      rc = 0;
 892
 893         ENTRY;
 894         LASSERT(handle != NULL);
 895         LASSERT(dt_object_exists(dt));
 896         LASSERT(osd_invariant(obj));
 897         LASSERT(obj->oo_sa_hdl);
 898
 899         oh = container_of0(handle, struct osd_thandle, ot_super);
 900         /* Assert that the transaction has been assigned to a
 901            transaction group. */
 902         LASSERT(oh->ot_tx->tx_txg != 0);
 903
 904         /* Only allow set size for regular file */
 905         if (!S_ISREG(dt->do_lu.lo_header->loh_attr))
 906                 valid &= ~(LA_SIZE | LA_BLOCKS);
 907
 908         if (valid == 0)
 909                 RETURN(0);
 910
 911         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 10);
 912         if (bulk == NULL)
 913                 RETURN(-ENOMEM);
 914
 915         /* do both accounting updates outside oo_attr_lock below */
 916         if ((valid & LA_UID) && (la->la_uid != obj->oo_attr.la_uid)) {
 917                 /* Update user accounting. Failure isn't fatal, but we still
 918                  * log an error message */
 919                 rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
 920                                         la->la_uid, 1, oh->ot_tx);
 921                 if (rc)
 922                         CERROR("%s: failed to update accounting ZAP for user "
 923                                 "%d (%d)\n", osd->od_svname, la->la_uid, rc);
 924                 rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
 925                                         obj->oo_attr.la_uid, -1, oh->ot_tx);
 926                 if (rc)
 927                         CERROR("%s: failed to update accounting ZAP for user "
 928                                 "%d (%d)\n", osd->od_svname,
 929                                 obj->oo_attr.la_uid, rc);
 930         }
 931         if ((valid & LA_GID) && (la->la_gid != obj->oo_attr.la_gid)) {
 932                 /* Update group accounting. Failure isn't fatal, but we still
 933                  * log an error message */
 934                 rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
 935                                         la->la_gid, 1, oh->ot_tx);
 936                 if (rc)
 937                         CERROR("%s: failed to update accounting ZAP for user "
 938                                 "%d (%d)\n", osd->od_svname, la->la_gid, rc);
 939                 rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
 940                                         obj->oo_attr.la_gid, -1, oh->ot_tx);
 941                 if (rc)
 942                         CERROR("%s: failed to update accounting ZAP for user "
 943                                 "%d (%d)\n", osd->od_svname,
 944                                 obj->oo_attr.la_gid, rc);
 945         }
 946
 947         write_lock(&obj->oo_attr_lock);
 948         cnt = 0;
 949         if (valid & LA_ATIME) {
 950                 osa->atime[0] = obj->oo_attr.la_atime = la->la_atime;
 951                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL,
 952                                  osa->atime, 16);
 953         }
 954         if (valid & LA_MTIME) {
 955                 osa->mtime[0] = obj->oo_attr.la_mtime = la->la_mtime;
 956                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL,
 957                                  osa->mtime, 16);
 958         }
 959         if (valid & LA_CTIME) {
 960                 osa->ctime[0] = obj->oo_attr.la_ctime = la->la_ctime;
 961                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL,
 962                                  osa->ctime, 16);
 963         }
 964         if (valid & LA_MODE) {
 965                 /* mode is stored along with type, so read it first */
 966                 obj->oo_attr.la_mode = (obj->oo_attr.la_mode & S_IFMT) |
 967                         (la->la_mode & ~S_IFMT);
 968                 osa->mode = obj->oo_attr.la_mode;
 969                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL,
 970                                  &osa->mode, 8);
 971         }
 972         if (valid & LA_SIZE) {
 973                 osa->size = obj->oo_attr.la_size = la->la_size;
 974                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL,
 975                                  &osa->size, 8);
 976         }
 977         if (valid & LA_NLINK) {
 978                 osa->nlink = obj->oo_attr.la_nlink = la->la_nlink;
 979                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL,
 980                                  &osa->nlink, 8);
 981         }
 982         if (valid & LA_RDEV) {
 983                 osa->rdev = obj->oo_attr.la_rdev = la->la_rdev;
 984                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL,
 985                                  &osa->rdev, 8);
 986         }
 987         if (valid & LA_FLAGS) {
 988                 osa->flags = attrs_fs2zfs(la->la_flags);
 989                 /* many flags are not supported by zfs, so ensure a good cached
 990                  * copy */
 991                 obj->oo_attr.la_flags = attrs_zfs2fs(osa->flags);
 992                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL,
 993                                  &osa->flags, 8);
 994         }
 995         if (valid & LA_UID) {
 996                 osa->uid = obj->oo_attr.la_uid = la->la_uid;
 997                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL,
 998                                  &osa->uid, 8);
 999         }
1000         if (valid & LA_GID) {
1001                 osa->gid = obj->oo_attr.la_gid = la->la_gid;
1002                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL,
1003                                  &osa->gid, 8);
1004         }
1005         obj->oo_attr.la_valid |= valid;
1006         write_unlock(&obj->oo_attr_lock);
1007
1008         rc = osd_object_sa_bulk_update(obj, bulk, cnt, oh);
1009
1010         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 10);
1011         RETURN(rc);
1012 }
1013
1014 /*
1015  * Object creation.
1016  *
1017  * XXX temporary solution.
1018  */
1019
1020 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1021                         struct dt_object *parent, struct dt_object *child,
1022                         umode_t child_mode)
1023 {
1024         LASSERT(ah);
1025
1026         ah->dah_parent = parent;
1027         ah->dah_mode = child_mode;
1028 }
1029
1030 static int osd_declare_object_create(const struct lu_env *env,
1031                                      struct dt_object *dt,
1032                                      struct lu_attr *attr,
1033                                      struct dt_allocation_hint *hint,
1034                                      struct dt_object_format *dof,
1035                                      struct thandle *handle)
1036 {
1037         char                    *buf = osd_oti_get(env)->oti_str;
1038         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1039         struct osd_object       *obj = osd_dt_obj(dt);
1040         struct osd_device       *osd = osd_obj2dev(obj);
1041         struct osd_thandle      *oh;
1042         uint64_t                 zapid;
1043         int                      rc;
1044         ENTRY;
1045
1046         LASSERT(dof);
1047
1048         switch (dof->dof_type) {
1049                 case DFT_REGULAR:
1050                 case DFT_SYM:
1051                 case DFT_NODE:
1052                         if (obj->oo_dt.do_body_ops == NULL)
1053                                 obj->oo_dt.do_body_ops = &osd_body_ops;
1054                         break;
1055                 default:
1056                         break;
1057         }
1058
1059         LASSERT(handle != NULL);
1060         oh = container_of0(handle, struct osd_thandle, ot_super);
1061         LASSERT(oh->ot_tx != NULL);
1062
1063         switch (dof->dof_type) {
1064                 case DFT_DIR:
1065                         dt->do_index_ops = &osd_dir_ops;
1066                 case DFT_INDEX:
1067                         /* for zap create */
1068                         dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, 1, NULL);
1069                         break;
1070                 case DFT_REGULAR:
1071                 case DFT_SYM:
1072                 case DFT_NODE:
1073                         /* first, we'll create new object */
1074                         dmu_tx_hold_bonus(oh->ot_tx, DMU_NEW_OBJECT);
1075                         break;
1076
1077                 default:
1078                         LBUG();
1079                         break;
1080         }
1081
1082         /* and we'll add it to some mapping */
1083         zapid = osd_get_name_n_idx(env, osd, fid, buf);
1084         dmu_tx_hold_bonus(oh->ot_tx, zapid);
1085         dmu_tx_hold_zap(oh->ot_tx, zapid, TRUE, buf);
1086
1087         /* we will also update inode accounting ZAPs */
1088         dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
1089         dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
1090         dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
1091         dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
1092
1093         dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
1094
1095         __osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
1096                                 XATTR_NAME_LMA, oh);
1097
1098         rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
1099                                false, NULL, false);
1100         RETURN(rc);
1101 }
1102
1103 int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
1104                     uint64_t oid, dmu_tx_t *tx, struct lu_attr *la,
1105                     uint64_t parent)
1106 {
1107         sa_bulk_attr_t  *bulk;
1108         sa_handle_t     *sa_hdl;
1109         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
1110         uint64_t         gen;
1111         uint64_t         crtime[2];
1112         timestruc_t      now;
1113         int              cnt;
1114         int              rc;
1115
1116         gethrestime(&now);
1117         gen = dmu_tx_get_txg(tx);
1118
1119         ZFS_TIME_ENCODE(&now, crtime);
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 = attrs_fs2zfs(la->la_flags);
1130         osa->size  = la->la_size;
1131
1132         /* Now add in all of the "SA" attributes */
1133         rc = -sa_handle_get(osd->od_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(osd), NULL, &osa->mode, 8);
1154         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL, &osa->size, 8);
1155         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(osd), NULL, &gen, 8);
1156         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL, &osa->uid, 8);
1157         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL, &osa->gid, 8);
1158         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(osd), NULL, &parent, 8);
1159         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL, &osa->flags, 8);
1160         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL, osa->atime, 16);
1161         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL, osa->mtime, 16);
1162         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL, osa->ctime, 16);
1163         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, crtime, 16);
1164         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL, &osa->nlink, 8);
1165         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), 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, struct osd_object *obj,
1181                         dmu_buf_t **dbp, dmu_tx_t *tx, struct lu_attr *la,
1182                         uint64_t parent)
1183 {
1184         uint64_t             oid;
1185         int                  rc;
1186         struct osd_device   *osd = osd_obj2dev(obj);
1187         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
1188         dmu_object_type_t    type = DMU_OT_PLAIN_FILE_CONTENTS;
1189
1190         /* Assert that the transaction has been assigned to a
1191            transaction group. */
1192         LASSERT(tx->tx_txg != 0);
1193
1194         /* Use DMU_OTN_UINT8_METADATA for local objects so their data blocks
1195          * would get an additional ditto copy */
1196         if (unlikely(S_ISREG(la->la_mode) &&
1197                      fid_seq_is_local_file(fid_seq(fid))))
1198                 type = DMU_OTN_UINT8_METADATA;
1199
1200         /* Create a new DMU object. */
1201         oid = dmu_object_alloc(osd->od_os, type, 0,
1202                                DMU_OT_SA, DN_MAX_BONUSLEN, tx);
1203         rc = -sa_buf_hold(osd->od_os, oid, osd_obj_tag, dbp);
1204         LASSERTF(rc == 0, "sa_buf_hold "LPU64" failed: %d\n", oid, rc);
1205
1206         LASSERT(la->la_valid & LA_MODE);
1207         la->la_size = 0;
1208         la->la_nlink = 1;
1209
1210         rc = __osd_attr_init(env, osd, oid, tx, la, parent);
1211         if (rc != 0) {
1212                 sa_buf_rele(*dbp, osd_obj_tag);
1213                 *dbp = NULL;
1214                 dmu_object_free(osd->od_os, oid, tx);
1215                 return rc;
1216         }
1217
1218         return 0;
1219 }
1220
1221 /*
1222  * The transaction passed to this routine must have
1223  * dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, ...) called and then assigned
1224  * to a transaction group.
1225  *
1226  * Using ZAP_FLAG_HASH64 will force the ZAP to always be a FAT ZAP.
1227  * This is fine for directories today, because storing the FID in the dirent
1228  * will also require a FAT ZAP.  If there is a new type of micro ZAP created
1229  * then we might need to re-evaluate the use of this flag and instead do
1230  * a conversion from the different internal ZAP hash formats being used. */
1231 int __osd_zap_create(const struct lu_env *env, struct osd_device *osd,
1232                      dmu_buf_t **zap_dbp, dmu_tx_t *tx,
1233                      struct lu_attr *la, uint64_t parent, zap_flags_t flags)
1234 {
1235         uint64_t oid;
1236         int      rc;
1237
1238         /* Assert that the transaction has been assigned to a
1239            transaction group. */
1240         LASSERT(tx->tx_txg != 0);
1241
1242         oid = zap_create_flags(osd->od_os, 0, flags | ZAP_FLAG_HASH64,
1243                                DMU_OT_DIRECTORY_CONTENTS,
1244                                14, /* == ZFS fzap_default_block_shift */
1245                                DN_MAX_INDBLKSHIFT, /* indirect block shift */
1246                                DMU_OT_SA, DN_MAX_BONUSLEN, tx);
1247
1248         rc = -sa_buf_hold(osd->od_os, oid, osd_obj_tag, zap_dbp);
1249         if (rc)
1250                 return rc;
1251
1252         LASSERT(la->la_valid & LA_MODE);
1253         la->la_size = 2;
1254         la->la_nlink = 1;
1255
1256         return __osd_attr_init(env, osd, oid, tx, la, parent);
1257 }
1258
1259 static dmu_buf_t *osd_mkidx(const struct lu_env *env, struct osd_object *obj,
1260                             struct lu_attr *la, uint64_t parent,
1261                             struct osd_thandle *oh)
1262 {
1263         dmu_buf_t *db;
1264         int        rc;
1265
1266         /* Index file should be created as regular file in order not to confuse
1267          * ZPL which could interpret them as directory.
1268          * We set ZAP_FLAG_UINT64_KEY to let ZFS know than we are going to use
1269          * binary keys */
1270         LASSERT(S_ISREG(la->la_mode));
1271         rc = __osd_zap_create(env, osd_obj2dev(obj), &db, oh->ot_tx, la, parent,
1272                               ZAP_FLAG_UINT64_KEY);
1273         if (rc)
1274                 return ERR_PTR(rc);
1275         return db;
1276 }
1277
1278 static dmu_buf_t *osd_mkdir(const struct lu_env *env, struct osd_object *obj,
1279                             struct lu_attr *la, uint64_t parent,
1280                             struct osd_thandle *oh)
1281 {
1282         dmu_buf_t *db;
1283         int        rc;
1284
1285         LASSERT(S_ISDIR(la->la_mode));
1286         rc = __osd_zap_create(env, osd_obj2dev(obj), &db,
1287                               oh->ot_tx, la, parent, 0);
1288         if (rc)
1289                 return ERR_PTR(rc);
1290         return db;
1291 }
1292
1293 static dmu_buf_t *osd_mkreg(const struct lu_env *env, struct osd_object *obj,
1294                             struct lu_attr *la, uint64_t parent,
1295                             struct osd_thandle *oh)
1296 {
1297         dmu_buf_t         *db;
1298         int                rc;
1299         struct osd_device *osd = osd_obj2dev(obj);
1300
1301         LASSERT(S_ISREG(la->la_mode));
1302         rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
1303         if (rc)
1304                 return ERR_PTR(rc);
1305
1306         /*
1307          * XXX: This heuristic is non-optimal.  It would be better to
1308          * increase the blocksize up to osd->od_max_blksz during the write.
1309          * This is exactly how the ZPL behaves and it ensures that the right
1310          * blocksize is selected based on the file size rather than the
1311          * making broad assumptions based on the osd type.
1312          */
1313         if (!lu_device_is_md(osd2lu_dev(osd))) {
1314                 rc = -dmu_object_set_blocksize(osd->od_os, db->db_object,
1315                                                osd->od_max_blksz, 0, oh->ot_tx);
1316                 if (unlikely(rc)) {
1317                         CERROR("%s: can't change blocksize: %d\n",
1318                                osd->od_svname, rc);
1319                         return ERR_PTR(rc);
1320                 }
1321         }
1322
1323         return db;
1324 }
1325
1326 static dmu_buf_t *osd_mksym(const struct lu_env *env, struct osd_object *obj,
1327                             struct lu_attr *la, uint64_t parent,
1328                             struct osd_thandle *oh)
1329 {
1330         dmu_buf_t *db;
1331         int        rc;
1332
1333         LASSERT(S_ISLNK(la->la_mode));
1334         rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
1335         if (rc)
1336                 return ERR_PTR(rc);
1337         return db;
1338 }
1339
1340 static dmu_buf_t *osd_mknod(const struct lu_env *env, struct osd_object *obj,
1341                             struct lu_attr *la, uint64_t parent,
1342                             struct osd_thandle *oh)
1343 {
1344         dmu_buf_t *db;
1345         int        rc;
1346
1347         la->la_valid = LA_MODE;
1348         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode))
1349                 la->la_valid |= LA_RDEV;
1350
1351         rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
1352         if (rc)
1353                 return ERR_PTR(rc);
1354         return db;
1355 }
1356
1357 typedef dmu_buf_t *(*osd_obj_type_f)(const struct lu_env *env,
1358                                      struct osd_object *obj,
1359                                      struct lu_attr *la,
1360                                      uint64_t parent,
1361                                      struct osd_thandle *oh);
1362
1363 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1364 {
1365         osd_obj_type_f result;
1366
1367         switch (type) {
1368         case DFT_DIR:
1369                 result = osd_mkdir;
1370                 break;
1371         case DFT_INDEX:
1372                 result = osd_mkidx;
1373                 break;
1374         case DFT_REGULAR:
1375                 result = osd_mkreg;
1376                 break;
1377         case DFT_SYM:
1378                 result = osd_mksym;
1379                 break;
1380         case DFT_NODE:
1381                 result = osd_mknod;
1382                 break;
1383         default:
1384                 LBUG();
1385                 break;
1386         }
1387         return result;
1388 }
1389
1390 /*
1391  * Primitives for directory (i.e. ZAP) handling
1392  */
1393 static inline int osd_init_lma(const struct lu_env *env, struct osd_object *obj,
1394                                const struct lu_fid *fid, struct osd_thandle *oh)
1395 {
1396         struct osd_thread_info  *info = osd_oti_get(env);
1397         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1398         struct lu_buf            buf;
1399         int rc;
1400
1401         lustre_lma_init(lma, fid, 0, 0);
1402         lustre_lma_swab(lma);
1403         buf.lb_buf = lma;
1404         buf.lb_len = sizeof(*lma);
1405
1406         rc = osd_xattr_set_internal(env, obj, &buf, XATTR_NAME_LMA,
1407                                     LU_XATTR_CREATE, oh);
1408
1409         return rc;
1410 }
1411
1412 /*
1413  * Concurrency: @dt is write locked.
1414  */
1415 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1416                              struct lu_attr *attr,
1417                              struct dt_allocation_hint *hint,
1418                              struct dt_object_format *dof,
1419                              struct thandle *th)
1420 {
1421         struct zpl_direntry     *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
1422         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1423         struct osd_object       *obj = osd_dt_obj(dt);
1424         struct osd_device       *osd = osd_obj2dev(obj);
1425         char                    *buf = osd_oti_get(env)->oti_str;
1426         struct osd_thandle      *oh;
1427         dmu_buf_t               *db;
1428         uint64_t                 zapid;
1429         int                      rc;
1430
1431         ENTRY;
1432
1433         /* concurrent create declarations should not see
1434          * the object inconsistent (db, attr, etc).
1435          * in regular cases acquisition should be cheap */
1436         down(&obj->oo_guard);
1437
1438         LASSERT(osd_invariant(obj));
1439         LASSERT(!dt_object_exists(dt));
1440         LASSERT(dof != NULL);
1441
1442         LASSERT(th != NULL);
1443         oh = container_of0(th, struct osd_thandle, ot_super);
1444
1445         /*
1446          * XXX missing: Quote handling.
1447          */
1448
1449         LASSERT(obj->oo_db == NULL);
1450
1451         /* to follow ZFS on-disk format we need
1452          * to initialize parent dnode properly */
1453         zapid = 0;
1454         if (hint != NULL && hint->dah_parent != NULL &&
1455             !dt_object_remote(hint->dah_parent))
1456                 zapid = osd_dt_obj(hint->dah_parent)->oo_db->db_object;
1457
1458         db = osd_create_type_f(dof->dof_type)(env, obj, attr, zapid, oh);
1459         if (IS_ERR(db))
1460                 GOTO(out, rc = PTR_ERR(db));
1461
1462         zde->zde_pad = 0;
1463         zde->zde_dnode = db->db_object;
1464         zde->zde_type = IFTODT(attr->la_mode & S_IFMT);
1465
1466         zapid = osd_get_name_n_idx(env, osd, fid, buf);
1467
1468         rc = -zap_add(osd->od_os, zapid, buf, 8, 1, zde, oh->ot_tx);
1469         if (rc)
1470                 GOTO(out, rc);
1471
1472         /* Add new object to inode accounting.
1473          * Errors are not considered as fatal */
1474         rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
1475                                 (attr->la_valid & LA_UID) ? attr->la_uid : 0, 1,
1476                                 oh->ot_tx);
1477         if (rc)
1478                 CERROR("%s: failed to add "DFID" to accounting ZAP for usr %d "
1479                         "(%d)\n", osd->od_svname, PFID(fid), attr->la_uid, rc);
1480         rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
1481                                 (attr->la_valid & LA_GID) ? attr->la_gid : 0, 1,
1482                                 oh->ot_tx);
1483         if (rc)
1484                 CERROR("%s: failed to add "DFID" to accounting ZAP for grp %d "
1485                         "(%d)\n", osd->od_svname, PFID(fid), attr->la_gid, rc);
1486
1487         /* configure new osd object */
1488         obj->oo_db = db;
1489         rc = osd_object_init0(env, obj);
1490         LASSERT(ergo(rc == 0, dt_object_exists(dt)));
1491         LASSERT(osd_invariant(obj));
1492
1493         rc = osd_init_lma(env, obj, fid, oh);
1494         if (rc) {
1495                 CERROR("%s: can not set LMA on "DFID": rc = %d\n",
1496                        osd->od_svname, PFID(fid), rc);
1497                 /* ignore errors during LMA initialization */
1498                 rc = 0;
1499         }
1500
1501 out:
1502         up(&obj->oo_guard);
1503         RETURN(rc);
1504 }
1505
1506 static int osd_declare_object_ref_add(const struct lu_env *env,
1507                                       struct dt_object *dt,
1508                                       struct thandle *th)
1509 {
1510         return osd_declare_attr_set(env, dt, NULL, th);
1511 }
1512
1513 /*
1514  * Concurrency: @dt is write locked.
1515  */
1516 static int osd_object_ref_add(const struct lu_env *env,
1517                               struct dt_object *dt,
1518                               struct thandle *handle)
1519 {
1520         struct osd_object       *obj = osd_dt_obj(dt);
1521         struct osd_thandle      *oh;
1522         struct osd_device       *osd = osd_obj2dev(obj);
1523         uint64_t                 nlink;
1524         int rc;
1525
1526         ENTRY;
1527
1528         LASSERT(osd_invariant(obj));
1529         LASSERT(dt_object_exists(dt));
1530         LASSERT(obj->oo_sa_hdl != NULL);
1531
1532         oh = container_of0(handle, struct osd_thandle, ot_super);
1533
1534         write_lock(&obj->oo_attr_lock);
1535         nlink = ++obj->oo_attr.la_nlink;
1536         write_unlock(&obj->oo_attr_lock);
1537
1538         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1539         return rc;
1540 }
1541
1542 static int osd_declare_object_ref_del(const struct lu_env *env,
1543                                       struct dt_object *dt,
1544                                       struct thandle *handle)
1545 {
1546         return osd_declare_attr_set(env, dt, NULL, handle);
1547 }
1548
1549 /*
1550  * Concurrency: @dt is write locked.
1551  */
1552 static int osd_object_ref_del(const struct lu_env *env,
1553                               struct dt_object *dt,
1554                               struct thandle *handle)
1555 {
1556         struct osd_object       *obj = osd_dt_obj(dt);
1557         struct osd_thandle      *oh;
1558         struct osd_device       *osd = osd_obj2dev(obj);
1559         uint64_t                 nlink;
1560         int                      rc;
1561
1562         ENTRY;
1563
1564         LASSERT(osd_invariant(obj));
1565         LASSERT(dt_object_exists(dt));
1566         LASSERT(obj->oo_sa_hdl != NULL);
1567
1568         oh = container_of0(handle, struct osd_thandle, ot_super);
1569         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
1570
1571         write_lock(&obj->oo_attr_lock);
1572         nlink = --obj->oo_attr.la_nlink;
1573         write_unlock(&obj->oo_attr_lock);
1574
1575         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1576         return rc;
1577 }
1578
1579 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
1580                            __u64 start, __u64 end)
1581 {
1582         struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
1583         ENTRY;
1584
1585         /* XXX: no other option than syncing the whole filesystem until we
1586          * support ZIL.  If the object tracked the txg that it was last
1587          * modified in, it could pass that txg here instead of "0".  Maybe
1588          * the changes are already committed, so no wait is needed at all? */
1589         txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
1590
1591         RETURN(0);
1592 }
1593
1594 static struct dt_object_operations osd_obj_ops = {
1595         .do_read_lock           = osd_object_read_lock,
1596         .do_write_lock          = osd_object_write_lock,
1597         .do_read_unlock         = osd_object_read_unlock,
1598         .do_write_unlock        = osd_object_write_unlock,
1599         .do_write_locked        = osd_object_write_locked,
1600         .do_attr_get            = osd_attr_get,
1601         .do_declare_attr_set    = osd_declare_attr_set,
1602         .do_attr_set            = osd_attr_set,
1603         .do_ah_init             = osd_ah_init,
1604         .do_declare_create      = osd_declare_object_create,
1605         .do_create              = osd_object_create,
1606         .do_declare_destroy     = osd_declare_object_destroy,
1607         .do_destroy             = osd_object_destroy,
1608         .do_index_try           = osd_index_try,
1609         .do_declare_ref_add     = osd_declare_object_ref_add,
1610         .do_ref_add             = osd_object_ref_add,
1611         .do_declare_ref_del     = osd_declare_object_ref_del,
1612         .do_ref_del             = osd_object_ref_del,
1613         .do_xattr_get           = osd_xattr_get,
1614         .do_declare_xattr_set   = osd_declare_xattr_set,
1615         .do_xattr_set           = osd_xattr_set,
1616         .do_declare_xattr_del   = osd_declare_xattr_del,
1617         .do_xattr_del           = osd_xattr_del,
1618         .do_xattr_list          = osd_xattr_list,
1619         .do_object_sync         = osd_object_sync,
1620 };
1621
1622 static struct lu_object_operations osd_lu_obj_ops = {
1623         .loo_object_init        = osd_object_init,
1624         .loo_object_delete      = osd_object_delete,
1625         .loo_object_release     = osd_object_release,
1626         .loo_object_free        = osd_object_free,
1627         .loo_object_print       = osd_object_print,
1628         .loo_object_invariant   = osd_object_invariant,
1629 };
1630
1631 static int osd_otable_it_attr_get(const struct lu_env *env,
1632                                 struct dt_object *dt,
1633                                 struct lu_attr *attr)
1634 {
1635         attr->la_valid = 0;
1636         return 0;
1637 }
1638
1639 static struct dt_object_operations osd_obj_otable_it_ops = {
1640         .do_attr_get    = osd_otable_it_attr_get,
1641         .do_index_try   = osd_index_try,
1642 };