lustre/osd-ldiskfs/osd_handler.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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, 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/osd_handler.c
  37  *
  38  * Top-level entry points into osd module
  39  *
  40  * Author: Nikita Danilov <nikita@clusterfs.com>
  41  *         Pravin Shelar <pravin.shelar@sun.com> : Added fid in dirent
  42  */
  43
  44 #define DEBUG_SUBSYSTEM S_MDS
  45
  46 #include <linux/module.h>
  47
  48 /* LUSTRE_VERSION_CODE */
  49 #include <lustre_ver.h>
  50 /* prerequisite for linux/xattr.h */
  51 #include <linux/types.h>
  52 /* prerequisite for linux/xattr.h */
  53 #include <linux/fs.h>
  54 /* XATTR_{REPLACE,CREATE} */
  55 #include <linux/xattr.h>
  56
  57 /*
  58  * struct OBD_{ALLOC,FREE}*()
  59  * OBD_FAIL_CHECK
  60  */
  61 #include <obd_support.h>
  62 /* struct ptlrpc_thread */
  63 #include <lustre_net.h>
  64 #include <lustre_fid.h>
  65
  66 #include "osd_internal.h"
  67
  68 /* llo_* api support */
  69 #include <md_object.h>
  70 #include <lustre_quota.h>
  71
  72 int ldiskfs_pdo = 1;
  73 CFS_MODULE_PARM(ldiskfs_pdo, "i", int, 0644,
  74                 "ldiskfs with parallel directory operations");
  75
  76 static const char dot[] = ".";
  77 static const char dotdot[] = "..";
  78 static const char remote_obj_dir[] = "REM_OBJ_DIR";
  79
  80 static const struct lu_object_operations      osd_lu_obj_ops;
  81 static const struct dt_object_operations      osd_obj_ops;
  82 static const struct dt_object_operations      osd_obj_ea_ops;
  83 static const struct dt_object_operations      osd_obj_otable_it_ops;
  84 static const struct dt_index_operations       osd_index_iam_ops;
  85 static const struct dt_index_operations       osd_index_ea_ops;
  86
  87 #ifdef OSD_TRACK_DECLARES
  88 int osd_trans_declare_op2rb[] = {
  89         [OSD_OT_ATTR_SET]       = OSD_OT_ATTR_SET,
  90         [OSD_OT_PUNCH]          = OSD_OT_MAX,
  91         [OSD_OT_XATTR_SET]      = OSD_OT_XATTR_SET,
  92         [OSD_OT_CREATE]         = OSD_OT_DESTROY,
  93         [OSD_OT_DESTROY]        = OSD_OT_CREATE,
  94         [OSD_OT_REF_ADD]        = OSD_OT_REF_DEL,
  95         [OSD_OT_REF_DEL]        = OSD_OT_REF_ADD,
  96         [OSD_OT_WRITE]          = OSD_OT_WRITE,
  97         [OSD_OT_INSERT]         = OSD_OT_DELETE,
  98         [OSD_OT_DELETE]         = OSD_OT_INSERT,
  99         [OSD_OT_QUOTA]          = OSD_OT_MAX,
 100 };
 101 #endif
 102
 103 static int osd_has_index(const struct osd_object *obj)
 104 {
 105         return obj->oo_dt.do_index_ops != NULL;
 106 }
 107
 108 static int osd_object_invariant(const struct lu_object *l)
 109 {
 110         return osd_invariant(osd_obj(l));
 111 }
 112
 113 /*
 114  * Concurrency: doesn't matter
 115  */
 116 static int osd_read_locked(const struct lu_env *env, struct osd_object *o)
 117 {
 118         return osd_oti_get(env)->oti_r_locks > 0;
 119 }
 120
 121 /*
 122  * Concurrency: doesn't matter
 123  */
 124 static int osd_write_locked(const struct lu_env *env, struct osd_object *o)
 125 {
 126         struct osd_thread_info *oti = osd_oti_get(env);
 127         return oti->oti_w_locks > 0 && o->oo_owner == env;
 128 }
 129
 130 /*
 131  * Concurrency: doesn't access mutable data
 132  */
 133 static int osd_root_get(const struct lu_env *env,
 134                         struct dt_device *dev, struct lu_fid *f)
 135 {
 136         lu_local_obj_fid(f, OSD_FS_ROOT_OID);
 137         return 0;
 138 }
 139
 140 /*
 141  * OSD object methods.
 142  */
 143
 144 /*
 145  * Concurrency: no concurrent access is possible that early in object
 146  * life-cycle.
 147  */
 148 static struct lu_object *osd_object_alloc(const struct lu_env *env,
 149                                           const struct lu_object_header *hdr,
 150                                           struct lu_device *d)
 151 {
 152         struct osd_object *mo;
 153
 154         OBD_ALLOC_PTR(mo);
 155         if (mo != NULL) {
 156                 struct lu_object *l;
 157
 158                 l = &mo->oo_dt.do_lu;
 159                 dt_object_init(&mo->oo_dt, NULL, d);
 160                 mo->oo_dt.do_ops = &osd_obj_ea_ops;
 161                 l->lo_ops = &osd_lu_obj_ops;
 162                 init_rwsem(&mo->oo_sem);
 163                 init_rwsem(&mo->oo_ext_idx_sem);
 164                 spin_lock_init(&mo->oo_guard);
 165                 return l;
 166         } else {
 167                 return NULL;
 168         }
 169 }
 170
 171 static inline int __osd_xattr_get(struct inode *inode, struct dentry *dentry,
 172                                   const char *name, void *buf, int len)
 173 {
 174         dentry->d_inode = inode;
 175         dentry->d_sb = inode->i_sb;
 176         return inode->i_op->getxattr(dentry, name, buf, len);
 177 }
 178
 179 int osd_get_lma(struct osd_thread_info *info, struct inode *inode,
 180                 struct dentry *dentry, struct lustre_mdt_attrs *lma)
 181 {
 182         int rc;
 183
 184         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMA, (void *)lma,
 185                              sizeof(*lma));
 186         if (rc == -ERANGE) {
 187                 /* try with old lma size */
 188                 rc = inode->i_op->getxattr(dentry, XATTR_NAME_LMA,
 189                                            info->oti_mdt_attrs_old,
 190                                            LMA_OLD_SIZE);
 191                 if (rc > 0)
 192                         memcpy(lma, info->oti_mdt_attrs_old, sizeof(*lma));
 193         }
 194         if (rc > 0) {
 195                 /* Check LMA compatibility */
 196                 if (lma->lma_incompat & ~cpu_to_le32(LMA_INCOMPAT_SUPP)) {
 197                         CWARN("%.16s: unsupported incompat LMA feature(s) "
 198                               "%lu/%#x\n",
 199                               LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
 200                               inode->i_ino, le32_to_cpu(lma->lma_incompat) &
 201                                                         ~LMA_INCOMPAT_SUPP);
 202                         rc = -ENOSYS;
 203                 } else {
 204                         lustre_lma_swab(lma);
 205                         rc = 0;
 206                 }
 207         } else if (rc == 0) {
 208                 rc = -ENODATA;
 209         }
 210
 211         return rc;
 212 }
 213
 214 /*
 215  * retrieve object from backend ext fs.
 216  **/
 217 struct inode *osd_iget(struct osd_thread_info *info, struct osd_device *dev,
 218                        struct osd_inode_id *id)
 219 {
 220         struct inode *inode = NULL;
 221
 222         inode = ldiskfs_iget(osd_sb(dev), id->oii_ino);
 223         if (IS_ERR(inode)) {
 224                 CDEBUG(D_INODE, "no inode: ino = %u, rc = %ld\n",
 225                        id->oii_ino, PTR_ERR(inode));
 226         } else if (id->oii_gen != OSD_OII_NOGEN &&
 227                    inode->i_generation != id->oii_gen) {
 228                 CDEBUG(D_INODE, "unmatched inode: ino = %u, gen0 = %u, "
 229                        "gen1 = %u\n",
 230                        id->oii_ino, id->oii_gen, inode->i_generation);
 231                 iput(inode);
 232                 inode = ERR_PTR(-ESTALE);
 233         } else if (inode->i_nlink == 0) {
 234                 /* due to parallel readdir and unlink,
 235                 * we can have dead inode here. */
 236                 CDEBUG(D_INODE, "stale inode: ino = %u\n", id->oii_ino);
 237                 make_bad_inode(inode);
 238                 iput(inode);
 239                 inode = ERR_PTR(-ESTALE);
 240         } else if (is_bad_inode(inode)) {
 241                 CWARN("%.16s: bad inode: ino = %u\n",
 242                 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, id->oii_ino);
 243                 iput(inode);
 244                 inode = ERR_PTR(-ENOENT);
 245         } else {
 246                 if (id->oii_gen == OSD_OII_NOGEN)
 247                         osd_id_gen(id, inode->i_ino, inode->i_generation);
 248
 249                 /* Do not update file c/mtime in ldiskfs.
 250                  * NB: we don't have any lock to protect this because we don't
 251                  * have reference on osd_object now, but contention with
 252                  * another lookup + attr_set can't happen in the tiny window
 253                  * between if (...) and set S_NOCMTIME. */
 254                 if (!(inode->i_flags & S_NOCMTIME))
 255                         inode->i_flags |= S_NOCMTIME;
 256         }
 257         return inode;
 258 }
 259
 260 static struct inode *
 261 osd_iget_fid(struct osd_thread_info *info, struct osd_device *dev,
 262              struct osd_inode_id *id, struct lu_fid *fid)
 263 {
 264         struct lustre_mdt_attrs *lma   = &info->oti_mdt_attrs;
 265         struct inode            *inode;
 266         int                      rc;
 267
 268         inode = osd_iget(info, dev, id);
 269         if (IS_ERR(inode))
 270                 return inode;
 271
 272         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
 273         if (rc == 0) {
 274                 *fid = lma->lma_self_fid;
 275         } else if (rc == -ENODATA) {
 276                 if (unlikely(inode == osd_sb(dev)->s_root->d_inode))
 277                         lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
 278                 else
 279                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
 280         } else {
 281                 iput(inode);
 282                 inode = ERR_PTR(rc);
 283         }
 284         return inode;
 285 }
 286
 287 static struct inode *
 288 osd_iget_verify(struct osd_thread_info *info, struct osd_device *dev,
 289                 struct osd_inode_id *id, const struct lu_fid *fid)
 290 {
 291         struct lustre_mdt_attrs *lma   = &info->oti_mdt_attrs;
 292         struct inode            *inode;
 293         int                      rc;
 294
 295         inode = osd_iget(info, dev, id);
 296         if (IS_ERR(inode))
 297                 return inode;
 298
 299         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
 300         if (rc == -ENODATA)
 301                 return inode;
 302
 303         if (rc != 0) {
 304                 iput(inode);
 305                 return ERR_PTR(rc);
 306         }
 307
 308         if (!lu_fid_eq(fid, &lma->lma_self_fid)) {
 309                 CDEBUG(D_LFSCK, "inconsistent obj: "DFID", %lu, "DFID"\n",
 310                        PFID(&lma->lma_self_fid), inode->i_ino, PFID(fid));
 311                 iput(inode);
 312                 return ERR_PTR(-EREMCHG);
 313         }
 314
 315         return inode;
 316 }
 317
 318 static int osd_fid_lookup(const struct lu_env *env, struct osd_object *obj,
 319                           const struct lu_fid *fid,
 320                           const struct lu_object_conf *conf)
 321 {
 322         struct osd_thread_info *info;
 323         struct lu_device       *ldev   = obj->oo_dt.do_lu.lo_dev;
 324         struct osd_device      *dev;
 325         struct osd_idmap_cache *oic;
 326         struct osd_inode_id    *id;
 327         struct inode           *inode;
 328         struct osd_scrub       *scrub;
 329         struct scrub_file      *sf;
 330         int                     result;
 331         int                     verify = 0;
 332         ENTRY;
 333
 334         LINVRNT(osd_invariant(obj));
 335         LASSERT(obj->oo_inode == NULL);
 336         LASSERTF(fid_is_sane(fid) || fid_is_idif(fid), DFID, PFID(fid));
 337
 338         dev = osd_dev(ldev);
 339         scrub = &dev->od_scrub;
 340         sf = &scrub->os_file;
 341         info = osd_oti_get(env);
 342         LASSERT(info);
 343         oic = &info->oti_cache;
 344
 345         if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
 346                 RETURN(-ENOENT);
 347
 348         /* Search order: 1. per-thread cache. */
 349         if (lu_fid_eq(fid, &oic->oic_fid)) {
 350                 id = &oic->oic_lid;
 351                 goto iget;
 352         }
 353
 354         id = &info->oti_id;
 355         if (!cfs_list_empty(&scrub->os_inconsistent_items)) {
 356                 /* Search order: 2. OI scrub pending list. */
 357                 result = osd_oii_lookup(dev, fid, id);
 358                 if (result == 0)
 359                         goto iget;
 360         }
 361
 362         if (sf->sf_flags & SF_INCONSISTENT)
 363                 verify = 1;
 364
 365         /*
 366          * Objects are created as locking anchors or place holders for objects
 367          * yet to be created. No need to osd_oi_lookup() at here because FID
 368          * shouldn't never be re-used, if it's really a duplicate FID from
 369          * unexpected reason, we should be able to detect it later by calling
 370          * do_create->osd_oi_insert()
 371          */
 372         if (conf != NULL && conf->loc_flags & LOC_F_NEW)
 373                 GOTO(out, result = 0);
 374
 375         /* Search order: 3. OI files. */
 376         result = osd_oi_lookup(info, dev, fid, id, true);
 377         if (result == -ENOENT) {
 378                 if (!fid_is_norm(fid) || fid_is_on_ost(info, dev, fid) ||
 379                     !ldiskfs_test_bit(osd_oi_fid2idx(dev,fid),
 380                                       sf->sf_oi_bitmap))
 381                         GOTO(out, result = 0);
 382
 383                 goto trigger;
 384         }
 385
 386         if (result != 0)
 387                 GOTO(out, result);
 388
 389 iget:
 390         if (verify == 0)
 391                 inode = osd_iget(info, dev, id);
 392         else
 393                 inode = osd_iget_verify(info, dev, id, fid);
 394         if (IS_ERR(inode)) {
 395                 result = PTR_ERR(inode);
 396                 if (result == -ENOENT || result == -ESTALE) {
 397                         fid_zero(&oic->oic_fid);
 398                         result = 0;
 399                 } else if (result == -EREMCHG) {
 400
 401 trigger:
 402                         if (thread_is_running(&scrub->os_thread)) {
 403                                 result = -EINPROGRESS;
 404                         } else if (!dev->od_noscrub) {
 405                                 result = osd_scrub_start(dev);
 406                                 LCONSOLE_ERROR("%.16s: trigger OI scrub by RPC "
 407                                                "for "DFID", rc = %d [1]\n",
 408                                                LDISKFS_SB(osd_sb(dev))->s_es->\
 409                                                s_volume_name,PFID(fid), result);
 410                                 if (result == 0 || result == -EALREADY)
 411                                         result = -EINPROGRESS;
 412                                 else
 413                                         result = -EREMCHG;
 414                         }
 415                 }
 416
 417                 GOTO(out, result);
 418         }
 419
 420         obj->oo_inode = inode;
 421         LASSERT(obj->oo_inode->i_sb == osd_sb(dev));
 422
 423         obj->oo_compat_dot_created = 1;
 424         obj->oo_compat_dotdot_created = 1;
 425
 426         if (!S_ISDIR(inode->i_mode) || !ldiskfs_pdo) /* done */
 427                 GOTO(out, result = 0);
 428
 429         LASSERT(obj->oo_hl_head == NULL);
 430         obj->oo_hl_head = ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
 431         if (obj->oo_hl_head == NULL) {
 432                 obj->oo_inode = NULL;
 433                 iput(inode);
 434                 GOTO(out, result = -ENOMEM);
 435         }
 436         GOTO(out, result = 0);
 437
 438 out:
 439         LINVRNT(osd_invariant(obj));
 440         return result;
 441 }
 442
 443 /*
 444  * Concurrency: shouldn't matter.
 445  */
 446 static void osd_object_init0(struct osd_object *obj)
 447 {
 448         LASSERT(obj->oo_inode != NULL);
 449         obj->oo_dt.do_body_ops = &osd_body_ops;
 450         obj->oo_dt.do_lu.lo_header->loh_attr |=
 451                 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
 452 }
 453
 454 /*
 455  * Concurrency: no concurrent access is possible that early in object
 456  * life-cycle.
 457  */
 458 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 459                            const struct lu_object_conf *conf)
 460 {
 461         struct osd_object *obj = osd_obj(l);
 462         int result;
 463
 464         LINVRNT(osd_invariant(obj));
 465
 466         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 467                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 468                 l->lo_header->loh_attr |= LOHA_EXISTS;
 469                 return 0;
 470         }
 471
 472         result = osd_fid_lookup(env, obj, lu_object_fid(l), conf);
 473         obj->oo_dt.do_body_ops = &osd_body_ops_new;
 474         if (result == 0 && obj->oo_inode != NULL)
 475                 osd_object_init0(obj);
 476
 477         LINVRNT(osd_invariant(obj));
 478         return result;
 479 }
 480
 481 /*
 482  * Concurrency: no concurrent access is possible that late in object
 483  * life-cycle.
 484  */
 485 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 486 {
 487         struct osd_object *obj = osd_obj(l);
 488
 489         LINVRNT(osd_invariant(obj));
 490
 491         dt_object_fini(&obj->oo_dt);
 492         if (obj->oo_hl_head != NULL)
 493                 ldiskfs_htree_lock_head_free(obj->oo_hl_head);
 494         OBD_FREE_PTR(obj);
 495 }
 496
 497 /*
 498  * Concurrency: no concurrent access is possible that late in object
 499  * life-cycle.
 500  */
 501 static void osd_index_fini(struct osd_object *o)
 502 {
 503         struct iam_container *bag;
 504
 505         if (o->oo_dir != NULL) {
 506                 bag = &o->oo_dir->od_container;
 507                 if (o->oo_inode != NULL) {
 508                         if (bag->ic_object == o->oo_inode)
 509                                 iam_container_fini(bag);
 510                 }
 511                 OBD_FREE_PTR(o->oo_dir);
 512                 o->oo_dir = NULL;
 513         }
 514 }
 515
 516 /*
 517  * Concurrency: no concurrent access is possible that late in object
 518  * life-cycle (for all existing callers, that is. New callers have to provide
 519  * their own locking.)
 520  */
 521 static int osd_inode_unlinked(const struct inode *inode)
 522 {
 523         return inode->i_nlink == 0;
 524 }
 525
 526 enum {
 527         OSD_TXN_OI_DELETE_CREDITS    = 20,
 528         OSD_TXN_INODE_DELETE_CREDITS = 20
 529 };
 530
 531 /*
 532  * Journal
 533  */
 534
 535 #if OSD_THANDLE_STATS
 536 /**
 537  * Set time when the handle is allocated
 538  */
 539 static void osd_th_alloced(struct osd_thandle *oth)
 540 {
 541         oth->oth_alloced = cfs_time_current();
 542 }
 543
 544 /**
 545  * Set time when the handle started
 546  */
 547 static void osd_th_started(struct osd_thandle *oth)
 548 {
 549         oth->oth_started = cfs_time_current();
 550 }
 551
 552 /**
 553  * Helper function to convert time interval to microseconds packed in
 554  * long int.
 555  */
 556 static long interval_to_usec(cfs_time_t start, cfs_time_t end)
 557 {
 558         struct timeval val;
 559
 560         cfs_duration_usec(cfs_time_sub(end, start), &val);
 561         return val.tv_sec * 1000000 + val.tv_usec;
 562 }
 563
 564 /**
 565  * Check whether the we deal with this handle for too long.
 566  */
 567 static void __osd_th_check_slow(void *oth, struct osd_device *dev,
 568                                 cfs_time_t alloced, cfs_time_t started,
 569                                 cfs_time_t closed)
 570 {
 571         cfs_time_t now = cfs_time_current();
 572
 573         LASSERT(dev != NULL);
 574
 575         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_STARTING,
 576                             interval_to_usec(alloced, started));
 577         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_OPEN,
 578                             interval_to_usec(started, closed));
 579         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_CLOSING,
 580                             interval_to_usec(closed, now));
 581
 582         if (cfs_time_before(cfs_time_add(alloced, cfs_time_seconds(30)), now)) {
 583                 CWARN("transaction handle %p was open for too long: "
 584                       "now "CFS_TIME_T" ,"
 585                       "alloced "CFS_TIME_T" ,"
 586                       "started "CFS_TIME_T" ,"
 587                       "closed "CFS_TIME_T"\n",
 588                       oth, now, alloced, started, closed);
 589                 libcfs_debug_dumpstack(NULL);
 590         }
 591 }
 592
 593 #define OSD_CHECK_SLOW_TH(oth, dev, expr)                               \
 594 {                                                                       \
 595         cfs_time_t __closed = cfs_time_current();                       \
 596         cfs_time_t __alloced = oth->oth_alloced;                        \
 597         cfs_time_t __started = oth->oth_started;                        \
 598                                                                         \
 599         expr;                                                           \
 600         __osd_th_check_slow(oth, dev, __alloced, __started, __closed);  \
 601 }
 602
 603 #else /* OSD_THANDLE_STATS */
 604
 605 #define osd_th_alloced(h)                  do {} while(0)
 606 #define osd_th_started(h)                  do {} while(0)
 607 #define OSD_CHECK_SLOW_TH(oth, dev, expr)  expr
 608
 609 #endif /* OSD_THANDLE_STATS */
 610
 611 /*
 612  * Concurrency: doesn't access mutable data.
 613  */
 614 static int osd_param_is_not_sane(const struct osd_device *dev,
 615                                  const struct thandle *th)
 616 {
 617         struct osd_thandle *oh = container_of(th, typeof(*oh), ot_super);
 618
 619         return oh->ot_credits > osd_journal(dev)->j_max_transaction_buffers;
 620 }
 621
 622 /*
 623  * Concurrency: shouldn't matter.
 624  */
 625 static void osd_trans_commit_cb(struct super_block *sb,
 626                                 struct ldiskfs_journal_cb_entry *jcb, int error)
 627 {
 628         struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb);
 629         struct thandle     *th  = &oh->ot_super;
 630         struct lu_device   *lud = &th->th_dev->dd_lu_dev;
 631         struct dt_txn_commit_cb *dcb, *tmp;
 632
 633         LASSERT(oh->ot_handle == NULL);
 634
 635         if (error)
 636                 CERROR("transaction @0x%p commit error: %d\n", th, error);
 637
 638         dt_txn_hook_commit(th);
 639
 640         /* call per-transaction callbacks if any */
 641         cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage) {
 642                 LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
 643                          "commit callback entry: magic=%x name='%s'\n",
 644                          dcb->dcb_magic, dcb->dcb_name);
 645                 cfs_list_del_init(&dcb->dcb_linkage);
 646                 dcb->dcb_func(NULL, th, dcb, error);
 647         }
 648
 649         lu_ref_del_at(&lud->ld_reference, oh->ot_dev_link, "osd-tx", th);
 650         lu_device_put(lud);
 651         th->th_dev = NULL;
 652
 653         lu_context_exit(&th->th_ctx);
 654         lu_context_fini(&th->th_ctx);
 655         OBD_FREE_PTR(oh);
 656 }
 657
 658 static struct thandle *osd_trans_create(const struct lu_env *env,
 659                                         struct dt_device *d)
 660 {
 661         struct osd_thread_info *oti = osd_oti_get(env);
 662         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
 663         struct osd_thandle     *oh;
 664         struct thandle         *th;
 665         ENTRY;
 666
 667         /* on pending IO in this thread should left from prev. request */
 668         LASSERT(cfs_atomic_read(&iobuf->dr_numreqs) == 0);
 669
 670         th = ERR_PTR(-ENOMEM);
 671         OBD_ALLOC_GFP(oh, sizeof *oh, CFS_ALLOC_IO);
 672         if (oh != NULL) {
 673                 oh->ot_quota_trans = &oti->oti_quota_trans;
 674                 memset(oh->ot_quota_trans, 0, sizeof(*oh->ot_quota_trans));
 675                 th = &oh->ot_super;
 676                 th->th_dev = d;
 677                 th->th_result = 0;
 678                 th->th_tags = LCT_TX_HANDLE;
 679                 oh->ot_credits = 0;
 680                 oti->oti_dev = osd_dt_dev(d);
 681                 CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
 682                 osd_th_alloced(oh);
 683
 684 #ifdef OSD_TRACK_DECLARES
 685                 memset(oti->oti_declare_ops, 0,
 686                                         sizeof(oti->oti_declare_ops));
 687                 memset(oti->oti_declare_ops_rb, 0,
 688                                         sizeof(oti->oti_declare_ops_rb));
 689                 memset(oti->oti_declare_ops_cred, 0,
 690                                         sizeof(oti->oti_declare_ops_cred));
 691                 oti->oti_rollback = false;
 692 #endif
 693         }
 694         RETURN(th);
 695 }
 696
 697 /*
 698  * Concurrency: shouldn't matter.
 699  */
 700 int osd_trans_start(const struct lu_env *env, struct dt_device *d,
 701                     struct thandle *th)
 702 {
 703         struct osd_thread_info *oti = osd_oti_get(env);
 704         struct osd_device  *dev = osd_dt_dev(d);
 705         handle_t           *jh;
 706         struct osd_thandle *oh;
 707         int rc;
 708
 709         ENTRY;
 710
 711         LASSERT(current->journal_info == NULL);
 712
 713         oh = container_of0(th, struct osd_thandle, ot_super);
 714         LASSERT(oh != NULL);
 715         LASSERT(oh->ot_handle == NULL);
 716
 717         rc = dt_txn_hook_start(env, d, th);
 718         if (rc != 0)
 719                 GOTO(out, rc);
 720
 721         if (unlikely(osd_param_is_not_sane(dev, th))) {
 722 #ifdef OSD_TRACK_DECLARES
 723                 static unsigned long last_printed;
 724                 static int last_credits;
 725 #endif
 726
 727                 CWARN("%.16s: too many transaction credits (%d > %d)\n",
 728                       LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
 729                       oh->ot_credits,
 730                       osd_journal(dev)->j_max_transaction_buffers);
 731 #ifdef OSD_TRACK_DECLARES
 732                 CWARN("  create: %u/%u, delete: %u/%u, destroy: %u/%u\n",
 733                       oti->oti_declare_ops[OSD_OT_CREATE],
 734                       oti->oti_declare_ops_cred[OSD_OT_CREATE],
 735                       oti->oti_declare_ops[OSD_OT_DELETE],
 736                       oti->oti_declare_ops_cred[OSD_OT_DELETE],
 737                       oti->oti_declare_ops[OSD_OT_DESTROY],
 738                       oti->oti_declare_ops_cred[OSD_OT_DESTROY]);
 739                 CWARN("  attr_set: %u/%u, xattr_set: %u/%u\n",
 740                       oti->oti_declare_ops[OSD_OT_ATTR_SET],
 741                       oti->oti_declare_ops_cred[OSD_OT_ATTR_SET],
 742                       oti->oti_declare_ops[OSD_OT_XATTR_SET],
 743                       oti->oti_declare_ops_cred[OSD_OT_XATTR_SET]);
 744                 CWARN("  write: %u/%u, punch: %u/%u, quota %u/%u\n",
 745                       oti->oti_declare_ops[OSD_OT_WRITE],
 746                       oti->oti_declare_ops_cred[OSD_OT_WRITE],
 747                       oti->oti_declare_ops[OSD_OT_PUNCH],
 748                       oti->oti_declare_ops_cred[OSD_OT_PUNCH],
 749                       oti->oti_declare_ops[OSD_OT_QUOTA],
 750                       oti->oti_declare_ops_cred[OSD_OT_QUOTA]);
 751                 CWARN("  insert: %u/%u, delete: %u/%u\n",
 752                       oti->oti_declare_ops[OSD_OT_INSERT],
 753                       oti->oti_declare_ops_cred[OSD_OT_INSERT],
 754                       oti->oti_declare_ops[OSD_OT_DESTROY],
 755                       oti->oti_declare_ops_cred[OSD_OT_DESTROY]);
 756                 CWARN("  ref_add: %u/%u, ref_del: %u/%u\n",
 757                       oti->oti_declare_ops[OSD_OT_REF_ADD],
 758                       oti->oti_declare_ops_cred[OSD_OT_REF_ADD],
 759                       oti->oti_declare_ops[OSD_OT_REF_DEL],
 760                       oti->oti_declare_ops_cred[OSD_OT_REF_DEL]);
 761
 762                 if (last_credits != oh->ot_credits &&
 763                     time_after(jiffies, last_printed + 60 * HZ)) {
 764                         libcfs_debug_dumpstack(NULL);
 765                         last_credits = oh->ot_credits;
 766                         last_printed = jiffies;
 767                 }
 768 #endif
 769                 /* XXX Limit the credits to 'max_transaction_buffers', and
 770                  *     let the underlying filesystem to catch the error if
 771                  *     we really need so many credits.
 772                  *
 773                  *     This should be removed when we can calculate the
 774                  *     credits precisely. */
 775                 oh->ot_credits = osd_journal(dev)->j_max_transaction_buffers;
 776         }
 777
 778         /*
 779          * XXX temporary stuff. Some abstraction layer should
 780          * be used.
 781          */
 782         jh = ldiskfs_journal_start_sb(osd_sb(dev), oh->ot_credits);
 783         osd_th_started(oh);
 784         if (!IS_ERR(jh)) {
 785                 oh->ot_handle = jh;
 786                 LASSERT(oti->oti_txns == 0);
 787                 lu_context_init(&th->th_ctx, th->th_tags);
 788                 lu_context_enter(&th->th_ctx);
 789
 790                 lu_device_get(&d->dd_lu_dev);
 791                 oh->ot_dev_link = lu_ref_add(&d->dd_lu_dev.ld_reference,
 792                                              "osd-tx", th);
 793                 oti->oti_txns++;
 794                 rc = 0;
 795         } else {
 796                 rc = PTR_ERR(jh);
 797         }
 798 out:
 799         RETURN(rc);
 800 }
 801
 802 /*
 803  * Concurrency: shouldn't matter.
 804  */
 805 static int osd_trans_stop(const struct lu_env *env, struct thandle *th)
 806 {
 807         int                     rc = 0;
 808         struct osd_thandle     *oh;
 809         struct osd_thread_info *oti = osd_oti_get(env);
 810         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
 811         struct qsd_instance    *qsd = oti->oti_dev->od_quota_slave;
 812         ENTRY;
 813
 814         oh = container_of0(th, struct osd_thandle, ot_super);
 815
 816         if (qsd != NULL)
 817                 /* inform the quota slave device that the transaction is
 818                  * stopping */
 819                 qsd_op_end(env, qsd, oh->ot_quota_trans);
 820         oh->ot_quota_trans = NULL;
 821
 822         if (oh->ot_handle != NULL) {
 823                 handle_t *hdl = oh->ot_handle;
 824
 825                 /*
 826                  * add commit callback
 827                  * notice we don't do this in osd_trans_start()
 828                  * as underlying transaction can change during truncate
 829                  */
 830                 ldiskfs_journal_callback_add(hdl, osd_trans_commit_cb,
 831                                          &oh->ot_jcb);
 832
 833                 LASSERT(oti->oti_txns == 1);
 834                 oti->oti_txns--;
 835                 rc = dt_txn_hook_stop(env, th);
 836                 if (rc != 0)
 837                         CERROR("Failure in transaction hook: %d\n", rc);
 838
 839                 /* hook functions might modify th_sync */
 840                 hdl->h_sync = th->th_sync;
 841
 842                 oh->ot_handle = NULL;
 843                 OSD_CHECK_SLOW_TH(oh, oti->oti_dev,
 844                                   rc = ldiskfs_journal_stop(hdl));
 845                 if (rc != 0)
 846                         CERROR("Failure to stop transaction: %d\n", rc);
 847         } else {
 848                 OBD_FREE_PTR(oh);
 849         }
 850
 851         /* as we want IO to journal and data IO be concurrent, we don't block
 852          * awaiting data IO completion in osd_do_bio(), instead we wait here
 853          * once transaction is submitted to the journal. all reqular requests
 854          * don't do direct IO (except read/write), thus this wait_event becomes
 855          * no-op for them.
 856          *
 857          * IMPORTANT: we have to wait till any IO submited by the thread is
 858          * completed otherwise iobuf may be corrupted by different request
 859          */
 860         cfs_wait_event(iobuf->dr_wait,
 861                        cfs_atomic_read(&iobuf->dr_numreqs) == 0);
 862         if (!rc)
 863                 rc = iobuf->dr_error;
 864
 865         RETURN(rc);
 866 }
 867
 868 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
 869 {
 870         struct osd_thandle *oh = container_of0(th, struct osd_thandle,
 871                                                ot_super);
 872
 873         LASSERT(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC);
 874         LASSERT(&dcb->dcb_func != NULL);
 875         cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
 876
 877         return 0;
 878 }
 879
 880 /*
 881  * Called just before object is freed. Releases all resources except for
 882  * object itself (that is released by osd_object_free()).
 883  *
 884  * Concurrency: no concurrent access is possible that late in object
 885  * life-cycle.
 886  */
 887 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 888 {
 889         struct osd_object *obj   = osd_obj(l);
 890         struct inode      *inode = obj->oo_inode;
 891
 892         LINVRNT(osd_invariant(obj));
 893
 894         /*
 895          * If object is unlinked remove fid->ino mapping from object index.
 896          */
 897
 898         osd_index_fini(obj);
 899         if (inode != NULL) {
 900                 struct qsd_instance     *qsd = osd_obj2dev(obj)->od_quota_slave;
 901                 qid_t                    uid = inode->i_uid;
 902                 qid_t                    gid = inode->i_gid;
 903
 904                 iput(inode);
 905                 obj->oo_inode = NULL;
 906
 907                 if (qsd != NULL) {
 908                         struct osd_thread_info  *info = osd_oti_get(env);
 909                         struct lquota_id_info   *qi = &info->oti_qi;
 910
 911                         /* Release granted quota to master if necessary */
 912                         qi->lqi_id.qid_uid = uid;
 913                         qsd_op_adjust(env, qsd, &qi->lqi_id, USRQUOTA);
 914
 915                         qi->lqi_id.qid_uid = gid;
 916                         qsd_op_adjust(env, qsd, &qi->lqi_id, GRPQUOTA);
 917                 }
 918         }
 919 }
 920
 921 /*
 922  * Concurrency: ->loo_object_release() is called under site spin-lock.
 923  */
 924 static void osd_object_release(const struct lu_env *env,
 925                                struct lu_object *l)
 926 {
 927 }
 928
 929 /*
 930  * Concurrency: shouldn't matter.
 931  */
 932 static int osd_object_print(const struct lu_env *env, void *cookie,
 933                             lu_printer_t p, const struct lu_object *l)
 934 {
 935         struct osd_object *o = osd_obj(l);
 936         struct iam_descr  *d;
 937
 938         if (o->oo_dir != NULL)
 939                 d = o->oo_dir->od_container.ic_descr;
 940         else
 941                 d = NULL;
 942         return (*p)(env, cookie,
 943                     LUSTRE_OSD_LDISKFS_NAME"-object@%p(i:%p:%lu/%u)[%s]",
 944                     o, o->oo_inode,
 945                     o->oo_inode ? o->oo_inode->i_ino : 0UL,
 946                     o->oo_inode ? o->oo_inode->i_generation : 0,
 947                     d ? d->id_ops->id_name : "plain");
 948 }
 949
 950 /*
 951  * Concurrency: shouldn't matter.
 952  */
 953 int osd_statfs(const struct lu_env *env, struct dt_device *d,
 954                struct obd_statfs *sfs)
 955 {
 956         struct osd_device  *osd = osd_dt_dev(d);
 957         struct super_block *sb = osd_sb(osd);
 958         struct kstatfs     *ksfs;
 959         int result = 0;
 960
 961         if (unlikely(osd->od_mnt == NULL))
 962                 return -EINPROGRESS;
 963
 964         /* osd_lproc.c call this without env, allocate ksfs for that case */
 965         if (unlikely(env == NULL)) {
 966                 OBD_ALLOC_PTR(ksfs);
 967                 if (ksfs == NULL)
 968                         return -ENOMEM;
 969         } else {
 970                 ksfs = &osd_oti_get(env)->oti_ksfs;
 971         }
 972
 973         spin_lock(&osd->od_osfs_lock);
 974         /* cache 1 second */
 975         if (cfs_time_before_64(osd->od_osfs_age, cfs_time_shift_64(-1))) {
 976                 result = sb->s_op->statfs(sb->s_root, ksfs);
 977                 if (likely(result == 0)) { /* N.B. statfs can't really fail */
 978                         osd->od_osfs_age = cfs_time_current_64();
 979                         statfs_pack(&osd->od_statfs, ksfs);
 980                         if (sb->s_flags & MS_RDONLY)
 981                                 sfs->os_state = OS_STATE_READONLY;
 982                 }
 983         }
 984
 985         if (likely(result == 0))
 986                 *sfs = osd->od_statfs;
 987         spin_unlock(&osd->od_osfs_lock);
 988
 989         if (unlikely(env == NULL))
 990                 OBD_FREE_PTR(ksfs);
 991
 992         return result;
 993 }
 994
 995 /**
 996  * Estimate space needed for file creations. We assume the largest filename
 997  * which is 2^64 - 1, hence a filename of 20 chars.
 998  * This is 28 bytes per object which is 28MB for 1M objects ... no so bad.
 999  */
1000 #ifdef __LDISKFS_DIR_REC_LEN
1001 #define PER_OBJ_USAGE __LDISKFS_DIR_REC_LEN(20)
1002 #else
1003 #define PER_OBJ_USAGE LDISKFS_DIR_REC_LEN(20)
1004 #endif
1005
1006 /*
1007  * Concurrency: doesn't access mutable data.
1008  */
1009 static void osd_conf_get(const struct lu_env *env,
1010                          const struct dt_device *dev,
1011                          struct dt_device_param *param)
1012 {
1013         struct super_block *sb = osd_sb(osd_dt_dev(dev));
1014
1015         /*
1016          * XXX should be taken from not-yet-existing fs abstraction layer.
1017          */
1018         param->ddp_mnt = osd_dt_dev(dev)->od_mnt;
1019         param->ddp_max_name_len = LDISKFS_NAME_LEN;
1020         param->ddp_max_nlink    = LDISKFS_LINK_MAX;
1021         param->ddp_block_shift  = sb->s_blocksize_bits;
1022         param->ddp_mount_type     = LDD_MT_LDISKFS;
1023         param->ddp_maxbytes       = sb->s_maxbytes;
1024         /* Overhead estimate should be fairly accurate, so we really take a tiny
1025          * error margin which also avoids fragmenting the filesystem too much */
1026         param->ddp_grant_reserved = 2; /* end up to be 1.9% after conversion */
1027         /* inode are statically allocated, so per-inode space consumption
1028          * is the space consumed by the directory entry */
1029         param->ddp_inodespace     = PER_OBJ_USAGE;
1030         /* per-fragment overhead to be used by the client code */
1031         param->ddp_grant_frag     = 6 * LDISKFS_BLOCK_SIZE(sb);
1032         param->ddp_mntopts      = 0;
1033         if (test_opt(sb, XATTR_USER))
1034                 param->ddp_mntopts |= MNTOPT_USERXATTR;
1035         if (test_opt(sb, POSIX_ACL))
1036                 param->ddp_mntopts |= MNTOPT_ACL;
1037
1038 #if defined(LDISKFS_FEATURE_INCOMPAT_EA_INODE)
1039         if (LDISKFS_HAS_INCOMPAT_FEATURE(sb, LDISKFS_FEATURE_INCOMPAT_EA_INODE))
1040                 param->ddp_max_ea_size = LDISKFS_XATTR_MAX_LARGE_EA_SIZE;
1041         else
1042 #endif
1043                 param->ddp_max_ea_size = sb->s_blocksize;
1044
1045 }
1046
1047 /*
1048  * Concurrency: shouldn't matter.
1049  */
1050 static int osd_sync(const struct lu_env *env, struct dt_device *d)
1051 {
1052         CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_LDISKFS_NAME);
1053         return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
1054 }
1055
1056 /**
1057  * Start commit for OSD device.
1058  *
1059  * An implementation of dt_commit_async method for OSD device.
1060  * Asychronously starts underlayng fs sync and thereby a transaction
1061  * commit.
1062  *
1063  * \param env environment
1064  * \param d dt device
1065  *
1066  * \see dt_device_operations
1067  */
1068 static int osd_commit_async(const struct lu_env *env,
1069                             struct dt_device *d)
1070 {
1071         struct super_block *s = osd_sb(osd_dt_dev(d));
1072         ENTRY;
1073
1074         CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_LDISKFS_NAME);
1075         RETURN(s->s_op->sync_fs(s, 0));
1076 }
1077
1078 /*
1079  * Concurrency: shouldn't matter.
1080  */
1081
1082 static int osd_ro(const struct lu_env *env, struct dt_device *d)
1083 {
1084         struct super_block *sb = osd_sb(osd_dt_dev(d));
1085         struct block_device *dev = sb->s_bdev;
1086 #ifdef HAVE_DEV_SET_RDONLY
1087         struct block_device *jdev = LDISKFS_SB(sb)->journal_bdev;
1088         int rc = 0;
1089 #else
1090         int rc = -EOPNOTSUPP;
1091 #endif
1092         ENTRY;
1093
1094 #ifdef HAVE_DEV_SET_RDONLY
1095         CERROR("*** setting %s read-only ***\n", osd_dt_dev(d)->od_svname);
1096
1097         if (jdev && (jdev != dev)) {
1098                 CDEBUG(D_IOCTL | D_HA, "set journal dev %lx rdonly\n",
1099                        (long)jdev);
1100                 dev_set_rdonly(jdev);
1101         }
1102         CDEBUG(D_IOCTL | D_HA, "set dev %lx rdonly\n", (long)dev);
1103         dev_set_rdonly(dev);
1104 #else
1105         CERROR("%s: %lx CANNOT BE SET READONLY: rc = %d\n",
1106                osd_dt_dev(d)->od_svname, (long)dev, rc);
1107 #endif
1108         RETURN(rc);
1109 }
1110
1111 /*
1112  * Concurrency: serialization provided by callers.
1113  */
1114 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
1115                               int mode, unsigned long timeout, __u32 alg,
1116                               struct lustre_capa_key *keys)
1117 {
1118         struct osd_device *dev = osd_dt_dev(d);
1119         ENTRY;
1120
1121         dev->od_fl_capa = mode;
1122         dev->od_capa_timeout = timeout;
1123         dev->od_capa_alg = alg;
1124         dev->od_capa_keys = keys;
1125         RETURN(0);
1126 }
1127
1128 /**
1129  * Note: we do not count into QUOTA here.
1130  * If we mount with --data_journal we may need more.
1131  */
1132 const int osd_dto_credits_noquota[DTO_NR] = {
1133         /**
1134          * Insert/Delete.
1135          * INDEX_EXTRA_TRANS_BLOCKS(8) +
1136          * SINGLEDATA_TRANS_BLOCKS(8)
1137          * XXX Note: maybe iam need more, since iam have more level than
1138          *           EXT3 htree.
1139          */
1140         [DTO_INDEX_INSERT]  = 16,
1141         [DTO_INDEX_DELETE]  = 16,
1142         /**
1143          * Used for OI scrub
1144          */
1145         [DTO_INDEX_UPDATE]  = 16,
1146         /**
1147          * Create a object. The same as create object in EXT3.
1148          * DATA_TRANS_BLOCKS(14) +
1149          * INDEX_EXTRA_BLOCKS(8) +
1150          * 3(inode bits, groups, GDT)
1151          */
1152         [DTO_OBJECT_CREATE] = 25,
1153         /**
1154          * XXX: real credits to be fixed
1155          */
1156         [DTO_OBJECT_DELETE] = 25,
1157         /**
1158          * Attr set credits (inode)
1159          */
1160         [DTO_ATTR_SET_BASE] = 1,
1161         /**
1162          * Xattr set. The same as xattr of EXT3.
1163          * DATA_TRANS_BLOCKS(14)
1164          * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
1165          * are also counted in. Do not know why?
1166          */
1167         [DTO_XATTR_SET]     = 14,
1168         [DTO_LOG_REC]       = 14,
1169         /**
1170          * credits for inode change during write.
1171          */
1172         [DTO_WRITE_BASE]    = 3,
1173         /**
1174          * credits for single block write.
1175          */
1176         [DTO_WRITE_BLOCK]   = 14,
1177         /**
1178          * Attr set credits for chown.
1179          * This is extra credits for setattr, and it is null without quota
1180          */
1181         [DTO_ATTR_SET_CHOWN]= 0
1182 };
1183
1184 static const struct dt_device_operations osd_dt_ops = {
1185         .dt_root_get       = osd_root_get,
1186         .dt_statfs         = osd_statfs,
1187         .dt_trans_create   = osd_trans_create,
1188         .dt_trans_start    = osd_trans_start,
1189         .dt_trans_stop     = osd_trans_stop,
1190         .dt_trans_cb_add   = osd_trans_cb_add,
1191         .dt_conf_get       = osd_conf_get,
1192         .dt_sync           = osd_sync,
1193         .dt_ro             = osd_ro,
1194         .dt_commit_async   = osd_commit_async,
1195         .dt_init_capa_ctxt = osd_init_capa_ctxt,
1196 };
1197
1198 static void osd_object_read_lock(const struct lu_env *env,
1199                                  struct dt_object *dt, unsigned role)
1200 {
1201         struct osd_object *obj = osd_dt_obj(dt);
1202         struct osd_thread_info *oti = osd_oti_get(env);
1203
1204         LINVRNT(osd_invariant(obj));
1205
1206         LASSERT(obj->oo_owner != env);
1207         down_read_nested(&obj->oo_sem, role);
1208
1209         LASSERT(obj->oo_owner == NULL);
1210         oti->oti_r_locks++;
1211 }
1212
1213 static void osd_object_write_lock(const struct lu_env *env,
1214                                   struct dt_object *dt, unsigned role)
1215 {
1216         struct osd_object *obj = osd_dt_obj(dt);
1217         struct osd_thread_info *oti = osd_oti_get(env);
1218
1219         LINVRNT(osd_invariant(obj));
1220
1221         LASSERT(obj->oo_owner != env);
1222         down_write_nested(&obj->oo_sem, role);
1223
1224         LASSERT(obj->oo_owner == NULL);
1225         obj->oo_owner = env;
1226         oti->oti_w_locks++;
1227 }
1228
1229 static void osd_object_read_unlock(const struct lu_env *env,
1230                                    struct dt_object *dt)
1231 {
1232         struct osd_object *obj = osd_dt_obj(dt);
1233         struct osd_thread_info *oti = osd_oti_get(env);
1234
1235         LINVRNT(osd_invariant(obj));
1236
1237         LASSERT(oti->oti_r_locks > 0);
1238         oti->oti_r_locks--;
1239         up_read(&obj->oo_sem);
1240 }
1241
1242 static void osd_object_write_unlock(const struct lu_env *env,
1243                                     struct dt_object *dt)
1244 {
1245         struct osd_object *obj = osd_dt_obj(dt);
1246         struct osd_thread_info *oti = osd_oti_get(env);
1247
1248         LINVRNT(osd_invariant(obj));
1249
1250         LASSERT(obj->oo_owner == env);
1251         LASSERT(oti->oti_w_locks > 0);
1252         oti->oti_w_locks--;
1253         obj->oo_owner = NULL;
1254         up_write(&obj->oo_sem);
1255 }
1256
1257 static int osd_object_write_locked(const struct lu_env *env,
1258                                    struct dt_object *dt)
1259 {
1260         struct osd_object *obj = osd_dt_obj(dt);
1261
1262         LINVRNT(osd_invariant(obj));
1263
1264         return obj->oo_owner == env;
1265 }
1266
1267 static int capa_is_sane(const struct lu_env *env,
1268                         struct osd_device *dev,
1269                         struct lustre_capa *capa,
1270                         struct lustre_capa_key *keys)
1271 {
1272         struct osd_thread_info *oti = osd_oti_get(env);
1273         struct lustre_capa *tcapa = &oti->oti_capa;
1274         struct obd_capa *oc;
1275         int i, rc = 0;
1276         ENTRY;
1277
1278         oc = capa_lookup(dev->od_capa_hash, capa, 0);
1279         if (oc) {
1280                 if (capa_is_expired(oc)) {
1281                         DEBUG_CAPA(D_ERROR, capa, "expired");
1282                         rc = -ESTALE;
1283                 }
1284                 capa_put(oc);
1285                 RETURN(rc);
1286         }
1287
1288         if (capa_is_expired_sec(capa)) {
1289                 DEBUG_CAPA(D_ERROR, capa, "expired");
1290                 RETURN(-ESTALE);
1291         }
1292
1293         spin_lock(&capa_lock);
1294         for (i = 0; i < 2; i++) {
1295                 if (keys[i].lk_keyid == capa->lc_keyid) {
1296                         oti->oti_capa_key = keys[i];
1297                         break;
1298                 }
1299         }
1300         spin_unlock(&capa_lock);
1301
1302         if (i == 2) {
1303                 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1304                 RETURN(-ESTALE);
1305         }
1306
1307         rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1308         if (rc)
1309                 RETURN(rc);
1310
1311         if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1312                 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1313                 RETURN(-EACCES);
1314         }
1315
1316         oc = capa_add(dev->od_capa_hash, capa);
1317         capa_put(oc);
1318
1319         RETURN(0);
1320 }
1321
1322 int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1323                     struct lustre_capa *capa, __u64 opc)
1324 {
1325         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1326         struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1327         struct md_capainfo *ci;
1328         int rc;
1329
1330         if (!dev->od_fl_capa)
1331                 return 0;
1332
1333         if (capa == BYPASS_CAPA)
1334                 return 0;
1335
1336         ci = md_capainfo(env);
1337         if (unlikely(!ci))
1338                 return 0;
1339
1340         if (ci->mc_auth == LC_ID_NONE)
1341                 return 0;
1342
1343         if (!capa) {
1344                 CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
1345                 return -EACCES;
1346         }
1347
1348         if (!lu_fid_eq(fid, &capa->lc_fid)) {
1349                 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1350                            PFID(fid));
1351                 return -EACCES;
1352         }
1353
1354         if (!capa_opc_supported(capa, opc)) {
1355                 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1356                 return -EACCES;
1357         }
1358
1359         if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
1360                 DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
1361                 return -EACCES;
1362         }
1363
1364         return 0;
1365 }
1366
1367 static struct timespec *osd_inode_time(const struct lu_env *env,
1368                                        struct inode *inode, __u64 seconds)
1369 {
1370         struct osd_thread_info  *oti = osd_oti_get(env);
1371         struct timespec         *t   = &oti->oti_time;
1372
1373         t->tv_sec = seconds;
1374         t->tv_nsec = 0;
1375         *t = timespec_trunc(*t, inode->i_sb->s_time_gran);
1376         return t;
1377 }
1378
1379
1380 static void osd_inode_getattr(const struct lu_env *env,
1381                               struct inode *inode, struct lu_attr *attr)
1382 {
1383         attr->la_valid      |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
1384                                LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
1385                                LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE |
1386                                LA_TYPE;
1387
1388         attr->la_atime      = LTIME_S(inode->i_atime);
1389         attr->la_mtime      = LTIME_S(inode->i_mtime);
1390         attr->la_ctime      = LTIME_S(inode->i_ctime);
1391         attr->la_mode       = inode->i_mode;
1392         attr->la_size       = i_size_read(inode);
1393         attr->la_blocks     = inode->i_blocks;
1394         attr->la_uid        = inode->i_uid;
1395         attr->la_gid        = inode->i_gid;
1396         attr->la_flags      = LDISKFS_I(inode)->i_flags;
1397         attr->la_nlink      = inode->i_nlink;
1398         attr->la_rdev       = inode->i_rdev;
1399         attr->la_blksize    = 1 << inode->i_blkbits;
1400         attr->la_blkbits    = inode->i_blkbits;
1401 }
1402
1403 static int osd_attr_get(const struct lu_env *env,
1404                         struct dt_object *dt,
1405                         struct lu_attr *attr,
1406                         struct lustre_capa *capa)
1407 {
1408         struct osd_object *obj = osd_dt_obj(dt);
1409
1410         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1411         LINVRNT(osd_invariant(obj));
1412
1413         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1414                 return -EACCES;
1415
1416         spin_lock(&obj->oo_guard);
1417         osd_inode_getattr(env, obj->oo_inode, attr);
1418         spin_unlock(&obj->oo_guard);
1419         return 0;
1420 }
1421
1422 static int osd_declare_attr_set(const struct lu_env *env,
1423                                 struct dt_object *dt,
1424                                 const struct lu_attr *attr,
1425                                 struct thandle *handle)
1426 {
1427         struct osd_thandle     *oh;
1428         struct osd_object      *obj;
1429         struct osd_thread_info *info = osd_oti_get(env);
1430         struct lquota_id_info  *qi = &info->oti_qi;
1431         long long               bspace;
1432         int                     rc = 0;
1433         bool                    allocated;
1434         ENTRY;
1435
1436         LASSERT(dt != NULL);
1437         LASSERT(handle != NULL);
1438
1439         obj = osd_dt_obj(dt);
1440         LASSERT(osd_invariant(obj));
1441
1442         oh = container_of0(handle, struct osd_thandle, ot_super);
1443         LASSERT(oh->ot_handle == NULL);
1444
1445         osd_trans_declare_op(env, oh, OSD_OT_ATTR_SET,
1446                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
1447
1448         if (attr == NULL || obj->oo_inode == NULL)
1449                 RETURN(rc);
1450
1451         bspace   = obj->oo_inode->i_blocks;
1452         bspace <<= obj->oo_inode->i_sb->s_blocksize_bits;
1453         bspace   = toqb(bspace);
1454
1455         /* Changing ownership is always preformed by super user, it should not
1456          * fail with EDQUOT.
1457          *
1458          * We still need to call the osd_declare_qid() to calculate the journal
1459          * credits for updating quota accounting files and to trigger quota
1460          * space adjustment once the operation is completed.*/
1461         if ((attr->la_valid & LA_UID) != 0 &&
1462              attr->la_uid != obj->oo_inode->i_uid) {
1463                 qi->lqi_type = USRQUOTA;
1464
1465                 /* inode accounting */
1466                 qi->lqi_is_blk = false;
1467
1468                 /* one more inode for the new owner ... */
1469                 qi->lqi_id.qid_uid = attr->la_uid;
1470                 qi->lqi_space      = 1;
1471                 allocated = (attr->la_uid == 0) ? true : false;
1472                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1473                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1474                         rc = 0;
1475                 if (rc)
1476                         RETURN(rc);
1477
1478                 /* and one less inode for the current uid */
1479                 qi->lqi_id.qid_uid = obj->oo_inode->i_uid;
1480                 qi->lqi_space      = -1;
1481                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1482                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1483                         rc = 0;
1484                 if (rc)
1485                         RETURN(rc);
1486
1487                 /* block accounting */
1488                 qi->lqi_is_blk = true;
1489
1490                 /* more blocks for the new owner ... */
1491                 qi->lqi_id.qid_uid = attr->la_uid;
1492                 qi->lqi_space      = bspace;
1493                 allocated = (attr->la_uid == 0) ? true : false;
1494                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1495                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1496                         rc = 0;
1497                 if (rc)
1498                         RETURN(rc);
1499
1500                 /* and finally less blocks for the current owner */
1501                 qi->lqi_id.qid_uid = obj->oo_inode->i_uid;
1502                 qi->lqi_space      = -bspace;
1503                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1504                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1505                         rc = 0;
1506                 if (rc)
1507                         RETURN(rc);
1508         }
1509
1510         if (attr->la_valid & LA_GID &&
1511             attr->la_gid != obj->oo_inode->i_gid) {
1512                 qi->lqi_type = GRPQUOTA;
1513
1514                 /* inode accounting */
1515                 qi->lqi_is_blk = false;
1516
1517                 /* one more inode for the new group owner ... */
1518                 qi->lqi_id.qid_gid = attr->la_gid;
1519                 qi->lqi_space      = 1;
1520                 allocated = (attr->la_gid == 0) ? true : false;
1521                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1522                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1523                         rc = 0;
1524                 if (rc)
1525                         RETURN(rc);
1526
1527                 /* and one less inode for the current gid */
1528                 qi->lqi_id.qid_gid = obj->oo_inode->i_gid;
1529                 qi->lqi_space      = -1;
1530                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1531                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1532                         rc = 0;
1533                 if (rc)
1534                         RETURN(rc);
1535
1536                 /* block accounting */
1537                 qi->lqi_is_blk = true;
1538
1539                 /* more blocks for the new owner ... */
1540                 qi->lqi_id.qid_gid = attr->la_gid;
1541                 qi->lqi_space      = bspace;
1542                 allocated = (attr->la_gid == 0) ? true : false;
1543                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1544                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1545                         rc = 0;
1546                 if (rc)
1547                         RETURN(rc);
1548
1549                 /* and finally less blocks for the current owner */
1550                 qi->lqi_id.qid_gid = obj->oo_inode->i_gid;
1551                 qi->lqi_space      = -bspace;
1552                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1553                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1554                         rc = 0;
1555                 if (rc)
1556                         RETURN(rc);
1557         }
1558
1559         RETURN(rc);
1560 }
1561
1562 static int osd_inode_setattr(const struct lu_env *env,
1563                              struct inode *inode, const struct lu_attr *attr)
1564 {
1565         __u64 bits;
1566
1567         bits = attr->la_valid;
1568
1569         if (bits & LA_ATIME)
1570                 inode->i_atime  = *osd_inode_time(env, inode, attr->la_atime);
1571         if (bits & LA_CTIME)
1572                 inode->i_ctime  = *osd_inode_time(env, inode, attr->la_ctime);
1573         if (bits & LA_MTIME)
1574                 inode->i_mtime  = *osd_inode_time(env, inode, attr->la_mtime);
1575         if (bits & LA_SIZE) {
1576                 LDISKFS_I(inode)->i_disksize = attr->la_size;
1577                 i_size_write(inode, attr->la_size);
1578         }
1579
1580 #if 0
1581         /* OSD should not change "i_blocks" which is used by quota.
1582          * "i_blocks" should be changed by ldiskfs only. */
1583         if (bits & LA_BLOCKS)
1584                 inode->i_blocks = attr->la_blocks;
1585 #endif
1586         if (bits & LA_MODE)
1587                 inode->i_mode   = (inode->i_mode & S_IFMT) |
1588                         (attr->la_mode & ~S_IFMT);
1589         if (bits & LA_UID)
1590                 inode->i_uid    = attr->la_uid;
1591         if (bits & LA_GID)
1592                 inode->i_gid    = attr->la_gid;
1593         if (bits & LA_NLINK)
1594                 set_nlink(inode, attr->la_nlink);
1595         if (bits & LA_RDEV)
1596                 inode->i_rdev   = attr->la_rdev;
1597
1598         if (bits & LA_FLAGS) {
1599                 /* always keep S_NOCMTIME */
1600                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
1601                                  S_NOCMTIME;
1602         }
1603         return 0;
1604 }
1605
1606 static int osd_quota_transfer(struct inode *inode, const struct lu_attr *attr)
1607 {
1608         if ((attr->la_valid & LA_UID && attr->la_uid != inode->i_uid) ||
1609             (attr->la_valid & LA_GID && attr->la_gid != inode->i_gid)) {
1610                 struct iattr    iattr;
1611                 int             rc;
1612
1613                 iattr.ia_valid = 0;
1614                 if (attr->la_valid & LA_UID)
1615                         iattr.ia_valid |= ATTR_UID;
1616                 if (attr->la_valid & LA_GID)
1617                         iattr.ia_valid |= ATTR_GID;
1618                 iattr.ia_uid = attr->la_uid;
1619                 iattr.ia_gid = attr->la_gid;
1620
1621                 rc = ll_vfs_dq_transfer(inode, &iattr);
1622                 if (rc) {
1623                         CERROR("%s: quota transfer failed: rc = %d. Is quota "
1624                                "enforcement enabled on the ldiskfs filesystem?",
1625                                inode->i_sb->s_id, rc);
1626                         return rc;
1627                 }
1628         }
1629         return 0;
1630 }
1631
1632 static int osd_attr_set(const struct lu_env *env,
1633                         struct dt_object *dt,
1634                         const struct lu_attr *attr,
1635                         struct thandle *handle,
1636                         struct lustre_capa *capa)
1637 {
1638         struct osd_object *obj = osd_dt_obj(dt);
1639         struct inode      *inode;
1640         int rc;
1641
1642         LASSERT(handle != NULL);
1643         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1644         LASSERT(osd_invariant(obj));
1645
1646         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1647                 return -EACCES;
1648
1649         osd_trans_exec_op(env, handle, OSD_OT_ATTR_SET);
1650
1651         if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FID_MAPPING)) {
1652                 struct osd_thread_info  *oti  = osd_oti_get(env);
1653                 const struct lu_fid     *fid0 = lu_object_fid(&dt->do_lu);
1654                 struct lu_fid           *fid1 = &oti->oti_fid;
1655                 struct osd_inode_id     *id   = &oti->oti_id;
1656                 struct iam_path_descr   *ipd;
1657                 struct iam_container    *bag;
1658                 struct osd_thandle      *oh;
1659                 int                      rc;
1660
1661                 fid_cpu_to_be(fid1, fid0);
1662                 memset(id, 1, sizeof(*id));
1663                 bag = &osd_fid2oi(osd_dev(dt->do_lu.lo_dev),
1664                                   fid0)->oi_dir.od_container;
1665                 ipd = osd_idx_ipd_get(env, bag);
1666                 if (unlikely(ipd == NULL))
1667                         RETURN(-ENOMEM);
1668
1669                 oh = container_of0(handle, struct osd_thandle, ot_super);
1670                 rc = iam_update(oh->ot_handle, bag, (const struct iam_key *)fid1,
1671                                 (const struct iam_rec *)id, ipd);
1672                 osd_ipd_put(env, bag, ipd);
1673                 return(rc > 0 ? 0 : rc);
1674         }
1675
1676         inode = obj->oo_inode;
1677         ll_vfs_dq_init(inode);
1678
1679         rc = osd_quota_transfer(inode, attr);
1680         if (rc)
1681                 return rc;
1682
1683         spin_lock(&obj->oo_guard);
1684         rc = osd_inode_setattr(env, inode, attr);
1685         spin_unlock(&obj->oo_guard);
1686
1687         if (!rc)
1688                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
1689         return rc;
1690 }
1691
1692 struct dentry *osd_child_dentry_get(const struct lu_env *env,
1693                                     struct osd_object *obj,
1694                                     const char *name, const int namelen)
1695 {
1696         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
1697 }
1698
1699 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
1700                       cfs_umode_t mode,
1701                       struct dt_allocation_hint *hint,
1702                       struct thandle *th)
1703 {
1704         int result;
1705         struct osd_device  *osd = osd_obj2dev(obj);
1706         struct osd_thandle *oth;
1707         struct dt_object   *parent = NULL;
1708         struct inode       *inode;
1709
1710         LINVRNT(osd_invariant(obj));
1711         LASSERT(obj->oo_inode == NULL);
1712         LASSERT(obj->oo_hl_head == NULL);
1713
1714         if (S_ISDIR(mode) && ldiskfs_pdo) {
1715                 obj->oo_hl_head =ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
1716                 if (obj->oo_hl_head == NULL)
1717                         return -ENOMEM;
1718         }
1719
1720         oth = container_of(th, struct osd_thandle, ot_super);
1721         LASSERT(oth->ot_handle->h_transaction != NULL);
1722
1723         if (hint && hint->dah_parent)
1724                 parent = hint->dah_parent;
1725
1726         inode = ldiskfs_create_inode(oth->ot_handle,
1727                                      parent ? osd_dt_obj(parent)->oo_inode :
1728                                               osd_sb(osd)->s_root->d_inode,
1729                                      mode);
1730         if (!IS_ERR(inode)) {
1731                 /* Do not update file c/mtime in ldiskfs.
1732                  * NB: don't need any lock because no contention at this
1733                  * early stage */
1734                 inode->i_flags |= S_NOCMTIME;
1735
1736                 /* For new created object, it must be consistent,
1737                  * and it is unnecessary to scrub against it. */
1738                 ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
1739                 obj->oo_inode = inode;
1740                 result = 0;
1741         } else {
1742                 if (obj->oo_hl_head != NULL) {
1743                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
1744                         obj->oo_hl_head = NULL;
1745                 }
1746                 result = PTR_ERR(inode);
1747         }
1748         LINVRNT(osd_invariant(obj));
1749         return result;
1750 }
1751
1752 enum {
1753         OSD_NAME_LEN = 255
1754 };
1755
1756 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
1757                      struct lu_attr *attr,
1758                      struct dt_allocation_hint *hint,
1759                      struct dt_object_format *dof,
1760                      struct thandle *th)
1761 {
1762         int result;
1763         struct osd_thandle *oth;
1764         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1765
1766         LASSERT(S_ISDIR(attr->la_mode));
1767
1768         oth = container_of(th, struct osd_thandle, ot_super);
1769         LASSERT(oth->ot_handle->h_transaction != NULL);
1770         result = osd_mkfile(info, obj, mode, hint, th);
1771
1772         return result;
1773 }
1774
1775 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
1776                         struct lu_attr *attr,
1777                         struct dt_allocation_hint *hint,
1778                         struct dt_object_format *dof,
1779                         struct thandle *th)
1780 {
1781         int result;
1782         struct osd_thandle *oth;
1783         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
1784
1785         __u32 mode = (attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX));
1786
1787         LASSERT(S_ISREG(attr->la_mode));
1788
1789         oth = container_of(th, struct osd_thandle, ot_super);
1790         LASSERT(oth->ot_handle->h_transaction != NULL);
1791
1792         result = osd_mkfile(info, obj, mode, hint, th);
1793         if (result == 0) {
1794                 LASSERT(obj->oo_inode != NULL);
1795                 if (feat->dif_flags & DT_IND_VARKEY)
1796                         result = iam_lvar_create(obj->oo_inode,
1797                                                  feat->dif_keysize_max,
1798                                                  feat->dif_ptrsize,
1799                                                  feat->dif_recsize_max,
1800                                                  oth->ot_handle);
1801                 else
1802                         result = iam_lfix_create(obj->oo_inode,
1803                                                  feat->dif_keysize_max,
1804                                                  feat->dif_ptrsize,
1805                                                  feat->dif_recsize_max,
1806                                                  oth->ot_handle);
1807
1808         }
1809         return result;
1810 }
1811
1812 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
1813                      struct lu_attr *attr,
1814                      struct dt_allocation_hint *hint,
1815                      struct dt_object_format *dof,
1816                      struct thandle *th)
1817 {
1818         LASSERT(S_ISREG(attr->la_mode));
1819         return osd_mkfile(info, obj, (attr->la_mode &
1820                                (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
1821 }
1822
1823 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
1824                      struct lu_attr *attr,
1825                      struct dt_allocation_hint *hint,
1826                      struct dt_object_format *dof,
1827                      struct thandle *th)
1828 {
1829         LASSERT(S_ISLNK(attr->la_mode));
1830         return osd_mkfile(info, obj, (attr->la_mode &
1831                               (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
1832 }
1833
1834 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
1835                      struct lu_attr *attr,
1836                      struct dt_allocation_hint *hint,
1837                      struct dt_object_format *dof,
1838                      struct thandle *th)
1839 {
1840         cfs_umode_t mode = attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX);
1841         int result;
1842
1843         LINVRNT(osd_invariant(obj));
1844         LASSERT(obj->oo_inode == NULL);
1845         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
1846                 S_ISFIFO(mode) || S_ISSOCK(mode));
1847
1848         result = osd_mkfile(info, obj, mode, hint, th);
1849         if (result == 0) {
1850                 LASSERT(obj->oo_inode != NULL);
1851                 /*
1852                  * This inode should be marked dirty for i_rdev.  Currently
1853                  * that is done in the osd_attr_init().
1854                  */
1855                 init_special_inode(obj->oo_inode, obj->oo_inode->i_mode,
1856                                    attr->la_rdev);
1857         }
1858         LINVRNT(osd_invariant(obj));
1859         return result;
1860 }
1861
1862 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
1863                               struct lu_attr *,
1864                               struct dt_allocation_hint *hint,
1865                               struct dt_object_format *dof,
1866                               struct thandle *);
1867
1868 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1869 {
1870         osd_obj_type_f result;
1871
1872         switch (type) {
1873         case DFT_DIR:
1874                 result = osd_mkdir;
1875                 break;
1876         case DFT_REGULAR:
1877                 result = osd_mkreg;
1878                 break;
1879         case DFT_SYM:
1880                 result = osd_mksym;
1881                 break;
1882         case DFT_NODE:
1883                 result = osd_mknod;
1884                 break;
1885         case DFT_INDEX:
1886                 result = osd_mk_index;
1887                 break;
1888
1889         default:
1890                 LBUG();
1891                 break;
1892         }
1893         return result;
1894 }
1895
1896
1897 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1898                         struct dt_object *parent, struct dt_object *child,
1899                         cfs_umode_t child_mode)
1900 {
1901         LASSERT(ah);
1902
1903         memset(ah, 0, sizeof(*ah));
1904         ah->dah_parent = parent;
1905         ah->dah_mode = child_mode;
1906 }
1907
1908 static void osd_attr_init(struct osd_thread_info *info, struct osd_object *obj,
1909                           struct lu_attr *attr, struct dt_object_format *dof)
1910 {
1911         struct inode   *inode = obj->oo_inode;
1912         __u64           valid = attr->la_valid;
1913         int             result;
1914
1915         attr->la_valid &= ~(LA_TYPE | LA_MODE);
1916
1917         if (dof->dof_type != DFT_NODE)
1918                 attr->la_valid &= ~LA_RDEV;
1919         if ((valid & LA_ATIME) && (attr->la_atime == LTIME_S(inode->i_atime)))
1920                 attr->la_valid &= ~LA_ATIME;
1921         if ((valid & LA_CTIME) && (attr->la_ctime == LTIME_S(inode->i_ctime)))
1922                 attr->la_valid &= ~LA_CTIME;
1923         if ((valid & LA_MTIME) && (attr->la_mtime == LTIME_S(inode->i_mtime)))
1924                 attr->la_valid &= ~LA_MTIME;
1925
1926         result = osd_quota_transfer(inode, attr);
1927         if (result)
1928                 return;
1929
1930         if (attr->la_valid != 0) {
1931                 result = osd_inode_setattr(info->oti_env, inode, attr);
1932                 /*
1933                  * The osd_inode_setattr() should always succeed here.  The
1934                  * only error that could be returned is EDQUOT when we are
1935                  * trying to change the UID or GID of the inode. However, this
1936                  * should not happen since quota enforcement is no longer
1937                  * enabled on ldiskfs (lquota takes care of it).
1938                  */
1939                 LASSERTF(result == 0, "%d", result);
1940                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
1941         }
1942
1943         attr->la_valid = valid;
1944 }
1945
1946 /**
1947  * Helper function for osd_object_create()
1948  *
1949  * \retval 0, on success
1950  */
1951 static int __osd_object_create(struct osd_thread_info *info,
1952                                struct osd_object *obj, struct lu_attr *attr,
1953                                struct dt_allocation_hint *hint,
1954                                struct dt_object_format *dof,
1955                                struct thandle *th)
1956 {
1957         int     result;
1958         __u32   umask;
1959
1960         /* we drop umask so that permissions we pass are not affected */
1961         umask = current->fs->umask;
1962         current->fs->umask = 0;
1963
1964         result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof,
1965                                                   th);
1966         if (result == 0) {
1967                 osd_attr_init(info, obj, attr, dof);
1968                 osd_object_init0(obj);
1969                 /* bz 24037 */
1970                 if (obj->oo_inode && (obj->oo_inode->i_state & I_NEW))
1971                         unlock_new_inode(obj->oo_inode);
1972         }
1973
1974         /* restore previous umask value */
1975         current->fs->umask = umask;
1976
1977         return result;
1978 }
1979
1980 /**
1981  * Helper function for osd_object_create()
1982  *
1983  * \retval 0, on success
1984  */
1985 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
1986                            const struct lu_fid *fid, struct thandle *th)
1987 {
1988         struct osd_thread_info *info = osd_oti_get(env);
1989         struct osd_inode_id    *id   = &info->oti_id;
1990         struct osd_device      *osd  = osd_obj2dev(obj);
1991
1992         LASSERT(obj->oo_inode != NULL);
1993
1994         osd_id_gen(id, obj->oo_inode->i_ino, obj->oo_inode->i_generation);
1995         return osd_oi_insert(info, osd, fid, id, th);
1996 }
1997
1998 int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
1999                    const struct lu_fid *fid, struct lu_seq_range *range)
2000 {
2001         struct seq_server_site  *ss = osd_seq_site(osd);
2002         int                     rc;
2003
2004         if (fid_is_idif(fid)) {
2005                 range->lsr_flags = LU_SEQ_RANGE_OST;
2006                 range->lsr_index = fid_idif_ost_idx(fid);
2007                 return 0;
2008         }
2009
2010         if (!fid_seq_in_fldb(fid_seq(fid))) {
2011                 range->lsr_flags = LU_SEQ_RANGE_MDT;
2012                 if (ss != NULL)
2013                         /* FIXME: If ss is NULL, it suppose not get lsr_index
2014                          * at all */
2015                         range->lsr_index = ss->ss_node_id;
2016                 return 0;
2017         }
2018
2019         LASSERT(ss != NULL);
2020         range->lsr_flags = -1;
2021         rc = fld_server_lookup(env, ss->ss_server_fld, fid_seq(fid), range);
2022         if (rc != 0) {
2023                 CERROR("%s can not find "DFID": rc = %d\n",
2024                        osd_name(osd), PFID(fid), rc);
2025         }
2026         return rc;
2027 }
2028
2029 /*
2030  * Concurrency: no external locking is necessary.
2031  */
2032 static int osd_declare_object_create(const struct lu_env *env,
2033                                      struct dt_object *dt,
2034                                      struct lu_attr *attr,
2035                                      struct dt_allocation_hint *hint,
2036                                      struct dt_object_format *dof,
2037                                      struct thandle *handle)
2038 {
2039         struct lu_seq_range     *range = &osd_oti_get(env)->oti_seq_range;
2040         struct osd_thandle      *oh;
2041         int                      rc;
2042         ENTRY;
2043
2044         LASSERT(handle != NULL);
2045
2046         oh = container_of0(handle, struct osd_thandle, ot_super);
2047         LASSERT(oh->ot_handle == NULL);
2048
2049         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
2050                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
2051         if (!fid_is_on_ost(osd_oti_get(env), osd_dt_dev(handle->th_dev),
2052                            lu_object_fid(&dt->do_lu)))
2053                 /* Reuse idle OI block may cause additional one OI block
2054                  * to be changed. */
2055                 osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2056                                 osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
2057
2058         /* If this is directory, then we expect . and .. to be inserted as
2059          * well. The one directory block always needs to be created for the
2060          * directory, so we could use DTO_WRITE_BASE here (GDT, block bitmap,
2061          * block), there is no danger of needing a tree for the first block.
2062          */
2063         if (attr && S_ISDIR(attr->la_mode)) {
2064                 osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2065                                      osd_dto_credits_noquota[DTO_WRITE_BASE]);
2066                 osd_trans_declare_op(env, oh, OSD_OT_INSERT, 0);
2067         }
2068
2069         if (!attr)
2070                 RETURN(0);
2071
2072         rc = osd_declare_inode_qid(env, attr->la_uid, attr->la_gid, 1, oh,
2073                                    false, false, NULL, false);
2074         if (rc != 0)
2075                 RETURN(rc);
2076
2077         /* It does fld look up inside declare, and the result will be
2078          * added to fld cache, so the following fld lookup inside insert
2079          * does not need send RPC anymore, so avoid send rpc with holding
2080          * transaction */
2081         if (fid_is_norm(lu_object_fid(&dt->do_lu)) &&
2082                 !fid_is_last_id(lu_object_fid(&dt->do_lu)))
2083                 osd_fld_lookup(env, osd_dt_dev(handle->th_dev),
2084                                lu_object_fid(&dt->do_lu), range);
2085
2086
2087         RETURN(rc);
2088 }
2089
2090 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
2091                              struct lu_attr *attr,
2092                              struct dt_allocation_hint *hint,
2093                              struct dt_object_format *dof,
2094                              struct thandle *th)
2095 {
2096         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2097         struct osd_object      *obj    = osd_dt_obj(dt);
2098         struct osd_thread_info *info   = osd_oti_get(env);
2099         int result;
2100
2101         ENTRY;
2102
2103         LINVRNT(osd_invariant(obj));
2104         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2105         LASSERT(osd_write_locked(env, obj));
2106         LASSERT(th != NULL);
2107
2108         if (unlikely(fid_is_acct(fid)))
2109                 /* Quota files can't be created from the kernel any more,
2110                  * 'tune2fs -O quota' will take care of creating them */
2111                 RETURN(-EPERM);
2112
2113         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2114         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2115
2116         result = __osd_object_create(info, obj, attr, hint, dof, th);
2117         if (result == 0)
2118                 result = __osd_oi_insert(env, obj, fid, th);
2119
2120         LASSERT(ergo(result == 0,
2121                      dt_object_exists(dt) && !dt_object_remote(dt)));
2122
2123         LASSERT(osd_invariant(obj));
2124         RETURN(result);
2125 }
2126
2127 /**
2128  * Called to destroy on-disk representation of the object
2129  *
2130  * Concurrency: must be locked
2131  */
2132 static int osd_declare_object_destroy(const struct lu_env *env,
2133                                       struct dt_object *dt,
2134                                       struct thandle *th)
2135 {
2136         struct osd_object  *obj = osd_dt_obj(dt);
2137         struct inode       *inode = obj->oo_inode;
2138         struct osd_thandle *oh;
2139         int                 rc;
2140         ENTRY;
2141
2142         oh = container_of0(th, struct osd_thandle, ot_super);
2143         LASSERT(oh->ot_handle == NULL);
2144         LASSERT(inode);
2145
2146         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
2147                              osd_dto_credits_noquota[DTO_OBJECT_DELETE]);
2148         /* Recycle idle OI leaf may cause additional three OI blocks
2149          * to be changed. */
2150         osd_trans_declare_op(env, oh, OSD_OT_DESTROY,
2151                              osd_dto_credits_noquota[DTO_INDEX_DELETE] + 3);
2152
2153         /* one less inode */
2154         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, -1, oh,
2155                                    false, true, NULL, false);
2156         if (rc)
2157                 RETURN(rc);
2158         /* data to be truncated */
2159         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0, oh,
2160                                    true, true, NULL, false);
2161         RETURN(rc);
2162 }
2163
2164 static int osd_object_destroy(const struct lu_env *env,
2165                               struct dt_object *dt,
2166                               struct thandle *th)
2167 {
2168         const struct lu_fid    *fid = lu_object_fid(&dt->do_lu);
2169         struct osd_object      *obj = osd_dt_obj(dt);
2170         struct inode           *inode = obj->oo_inode;
2171         struct osd_device      *osd = osd_obj2dev(obj);
2172         struct osd_thandle     *oh;
2173         int                     result;
2174         ENTRY;
2175
2176         oh = container_of0(th, struct osd_thandle, ot_super);
2177         LASSERT(oh->ot_handle);
2178         LASSERT(inode);
2179         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
2180
2181         if (unlikely(fid_is_acct(fid)))
2182                 RETURN(-EPERM);
2183
2184         /* Parallel control for OI scrub. For most of cases, there is no
2185          * lock contention. So it will not affect unlink performance. */
2186         mutex_lock(&inode->i_mutex);
2187         if (S_ISDIR(inode->i_mode)) {
2188                 LASSERT(osd_inode_unlinked(inode) || inode->i_nlink == 1);
2189                 /* it will check/delete the inode from remote parent,
2190                  * how to optimize it? unlink performance impaction XXX */
2191                 result = osd_delete_from_remote_parent(env, osd, obj, oh);
2192                 if (result != 0 && result != -ENOENT) {
2193                         CERROR("%s: delete inode "DFID": rc = %d\n",
2194                                osd_name(osd), PFID(fid), result);
2195                 }
2196                 spin_lock(&obj->oo_guard);
2197                 clear_nlink(inode);
2198                 spin_unlock(&obj->oo_guard);
2199                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2200         }
2201
2202         osd_trans_exec_op(env, th, OSD_OT_DESTROY);
2203
2204         result = osd_oi_delete(osd_oti_get(env), osd, fid, th);
2205         mutex_unlock(&inode->i_mutex);
2206
2207         /* XXX: add to ext3 orphan list */
2208         /* rc = ext3_orphan_add(handle_t *handle, struct inode *inode) */
2209
2210         /* not needed in the cache anymore */
2211         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
2212
2213         RETURN(0);
2214 }
2215
2216 /**
2217  * Put the fid into lustre_mdt_attrs, and then place the structure
2218  * inode's ea. This fid should not be altered during the life time
2219  * of the inode.
2220  *
2221  * \retval +ve, on success
2222  * \retval -ve, on error
2223  *
2224  * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
2225  */
2226 int osd_ea_fid_set(struct osd_thread_info *info, struct inode *inode,
2227                    const struct lu_fid *fid, __u64 flags)
2228 {
2229         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
2230         int                      rc;
2231
2232         if (OBD_FAIL_CHECK(OBD_FAIL_FID_INLMA))
2233                 return 0;
2234
2235         lustre_lma_init(lma, fid, flags);
2236         lustre_lma_swab(lma);
2237
2238         rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma, sizeof(*lma),
2239                              XATTR_CREATE);
2240         /* Someone may created the EA by race. */
2241         if (unlikely(rc == -EEXIST))
2242                 rc = 0;
2243         return rc;
2244 }
2245
2246 /**
2247  * ldiskfs supports fid in dirent, it is passed in dentry->d_fsdata.
2248  * lustre 1.8 also uses d_fsdata for passing other info to ldiskfs.
2249  * To have compatilibility with 1.8 ldiskfs driver we need to have
2250  * magic number at start of fid data.
2251  * \ldiskfs_dentry_param is used only to pass fid from osd to ldiskfs.
2252  * its inmemory API.
2253  */
2254 void osd_get_ldiskfs_dirent_param(struct ldiskfs_dentry_param *param,
2255                                   const struct dt_rec *fid)
2256 {
2257         if (!fid_is_namespace_visible((const struct lu_fid *)fid) ||
2258             OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF)) {
2259                 param->edp_magic = 0;
2260                 return;
2261         }
2262
2263         param->edp_magic = LDISKFS_LUFID_MAGIC;
2264         param->edp_len =  sizeof(struct lu_fid) + 1;
2265         fid_cpu_to_be((struct lu_fid *)param->edp_data, (struct lu_fid *)fid);
2266 }
2267
2268 /**
2269  * Try to read the fid from inode ea into dt_rec.
2270  *
2271  * \param fid object fid.
2272  *
2273  * \retval 0 on success
2274  */
2275 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
2276                           __u32 ino, struct lu_fid *fid,
2277                           struct osd_inode_id *id)
2278 {
2279         struct osd_thread_info *info  = osd_oti_get(env);
2280         struct inode           *inode;
2281         ENTRY;
2282
2283         osd_id_gen(id, ino, OSD_OII_NOGEN);
2284         inode = osd_iget_fid(info, osd_obj2dev(obj), id, fid);
2285         if (IS_ERR(inode))
2286                 RETURN(PTR_ERR(inode));
2287
2288         iput(inode);
2289         RETURN(0);
2290 }
2291
2292 static int osd_add_dot_dotdot_internal(struct osd_thread_info *info,
2293                                         struct inode *dir,
2294                                         struct inode  *parent_dir,
2295                                         const struct dt_rec *dot_fid,
2296                                         const struct dt_rec *dot_dot_fid,
2297                                         struct osd_thandle *oth)
2298 {
2299         struct ldiskfs_dentry_param *dot_ldp;
2300         struct ldiskfs_dentry_param *dot_dot_ldp;
2301
2302         dot_dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp2;
2303         osd_get_ldiskfs_dirent_param(dot_dot_ldp, dot_dot_fid);
2304
2305         dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
2306         dot_ldp->edp_magic = 0;
2307         return ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir,
2308                                         dir, dot_ldp, dot_dot_ldp);
2309 }
2310
2311 /**
2312  * Create an local agent inode for remote entry
2313  */
2314 static struct inode *osd_create_local_agent_inode(const struct lu_env *env,
2315                                                   struct osd_device *osd,
2316                                                   struct osd_object *pobj,
2317                                                   const struct lu_fid *fid,
2318                                                   struct thandle *th)
2319 {
2320         struct osd_thread_info  *info = osd_oti_get(env);
2321         struct inode            *local;
2322         struct osd_thandle      *oh;
2323         int                     rc;
2324         ENTRY;
2325
2326         LASSERT(th);
2327         oh = container_of(th, struct osd_thandle, ot_super);
2328         LASSERT(oh->ot_handle->h_transaction != NULL);
2329
2330         /* FIXME: Insert index api needs to know the mode of
2331          * the remote object. Just use S_IFDIR for now */
2332         local = ldiskfs_create_inode(oh->ot_handle, pobj->oo_inode, S_IFDIR);
2333         if (IS_ERR(local)) {
2334                 CERROR("%s: create local error %d\n", osd_name(osd),
2335                        (int)PTR_ERR(local));
2336                 RETURN(local);
2337         }
2338
2339         /* Set special LMA flag for local agent inode */
2340         rc = osd_ea_fid_set(info, local, fid, LMAI_AGENT);
2341         if (rc != 0) {
2342                 CERROR("%s: set LMA for "DFID" remote inode failed: rc = %d\n",
2343                        osd_name(osd), PFID(fid), rc);
2344                 RETURN(ERR_PTR(rc));
2345         }
2346
2347         rc = osd_add_dot_dotdot_internal(info, local, pobj->oo_inode,
2348                 (const struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
2349                 (const struct dt_rec *)fid, oh);
2350         if (rc != 0) {
2351                 CERROR("%s: "DFID" add dot dotdot error: rc = %d\n",
2352                         osd_name(osd), PFID(fid), rc);
2353                 RETURN(ERR_PTR(rc));
2354         }
2355
2356         RETURN(local);
2357 }
2358
2359 /**
2360  * Delete local agent inode for remote entry
2361  */
2362 static int osd_delete_local_agent_inode(const struct lu_env *env,
2363                                         struct osd_device *osd,
2364                                         const struct lu_fid *fid,
2365                                         __u32 ino, struct osd_thandle *oh)
2366 {
2367         struct osd_thread_info  *oti = osd_oti_get(env);
2368         struct osd_inode_id     *id = &oti->oti_id;
2369         struct inode            *inode;
2370         ENTRY;
2371
2372         id->oii_ino = le32_to_cpu(ino);
2373         id->oii_gen = OSD_OII_NOGEN;
2374         inode = osd_iget(oti, osd, id);
2375         if (IS_ERR(inode)) {
2376                 CERROR("%s: iget error "DFID" id %u:%u\n", osd_name(osd),
2377                        PFID(fid), id->oii_ino, id->oii_gen);
2378                 RETURN(PTR_ERR(inode));
2379         }
2380
2381         clear_nlink(inode);
2382         mark_inode_dirty(inode);
2383         CDEBUG(D_INODE, "%s: delete remote inode "DFID" %lu\n",
2384                 osd_name(osd), PFID(fid), inode->i_ino);
2385         iput(inode);
2386         RETURN(0);
2387 }
2388
2389 /**
2390  * OSD layer object create function for interoperability mode (b11826).
2391  * This is mostly similar to osd_object_create(). Only difference being, fid is
2392  * inserted into inode ea here.
2393  *
2394  * \retval   0, on success
2395  * \retval -ve, on error
2396  */
2397 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
2398                                 struct lu_attr *attr,
2399                                 struct dt_allocation_hint *hint,
2400                                 struct dt_object_format *dof,
2401                                 struct thandle *th)
2402 {
2403         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2404         struct osd_object      *obj    = osd_dt_obj(dt);
2405         struct osd_thread_info *info   = osd_oti_get(env);
2406         int                     result;
2407
2408         ENTRY;
2409
2410         LASSERT(osd_invariant(obj));
2411         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2412         LASSERT(osd_write_locked(env, obj));
2413         LASSERT(th != NULL);
2414
2415         if (unlikely(fid_is_acct(fid)))
2416                 /* Quota files can't be created from the kernel any more,
2417                  * 'tune2fs -O quota' will take care of creating them */
2418                 RETURN(-EPERM);
2419
2420         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2421         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2422
2423         result = __osd_object_create(info, obj, attr, hint, dof, th);
2424         if (result == 0)
2425                 result = osd_ea_fid_set(info, obj->oo_inode, fid, 0);
2426
2427         if (result == 0)
2428                 result = __osd_oi_insert(env, obj, fid, th);
2429
2430         LASSERT(ergo(result == 0,
2431                      dt_object_exists(dt) && !dt_object_remote(dt)));
2432         LINVRNT(osd_invariant(obj));
2433         RETURN(result);
2434 }
2435
2436 static int osd_declare_object_ref_add(const struct lu_env *env,
2437                                       struct dt_object *dt,
2438                                       struct thandle *handle)
2439 {
2440         struct osd_thandle       *oh;
2441
2442         /* it's possible that object doesn't exist yet */
2443         LASSERT(handle != NULL);
2444
2445         oh = container_of0(handle, struct osd_thandle, ot_super);
2446         LASSERT(oh->ot_handle == NULL);
2447
2448         osd_trans_declare_op(env, oh, OSD_OT_REF_ADD,
2449                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2450
2451         return 0;
2452 }
2453
2454 /*
2455  * Concurrency: @dt is write locked.
2456  */
2457 static int osd_object_ref_add(const struct lu_env *env,
2458                               struct dt_object *dt, struct thandle *th)
2459 {
2460         struct osd_object *obj = osd_dt_obj(dt);
2461         struct inode      *inode = obj->oo_inode;
2462
2463         LINVRNT(osd_invariant(obj));
2464         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2465         LASSERT(osd_write_locked(env, obj));
2466         LASSERT(th != NULL);
2467
2468         osd_trans_exec_op(env, th, OSD_OT_REF_ADD);
2469
2470         /*
2471          * DIR_NLINK feature is set for compatibility reasons if:
2472          * 1) nlinks > LDISKFS_LINK_MAX, or
2473          * 2) nlinks == 2, since this indicates i_nlink was previously 1.
2474          *
2475          * It is easier to always set this flag (rather than check and set),
2476          * since it has less overhead, and the superblock will be dirtied
2477          * at some point. Both e2fsprogs and any Lustre-supported ldiskfs
2478          * do not actually care whether this flag is set or not.
2479          */
2480         spin_lock(&obj->oo_guard);
2481         /* inc_nlink from 0 may cause WARN_ON */
2482         if(inode->i_nlink == 0)
2483                 set_nlink(inode, 1);
2484         else
2485                 inc_nlink(inode);
2486         if (S_ISDIR(inode->i_mode) && inode->i_nlink > 1) {
2487                 if (inode->i_nlink >= LDISKFS_LINK_MAX ||
2488                     inode->i_nlink == 2)
2489                         set_nlink(inode, 1);
2490         }
2491         LASSERT(inode->i_nlink <= LDISKFS_LINK_MAX);
2492         spin_unlock(&obj->oo_guard);
2493         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2494         LINVRNT(osd_invariant(obj));
2495
2496         return 0;
2497 }
2498
2499 static int osd_declare_object_ref_del(const struct lu_env *env,
2500                                       struct dt_object *dt,
2501                                       struct thandle *handle)
2502 {
2503         struct osd_thandle *oh;
2504
2505         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2506         LASSERT(handle != NULL);
2507
2508         oh = container_of0(handle, struct osd_thandle, ot_super);
2509         LASSERT(oh->ot_handle == NULL);
2510
2511         osd_trans_declare_op(env, oh, OSD_OT_REF_DEL,
2512                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2513
2514         return 0;
2515 }
2516
2517 /*
2518  * Concurrency: @dt is write locked.
2519  */
2520 static int osd_object_ref_del(const struct lu_env *env, struct dt_object *dt,
2521                               struct thandle *th)
2522 {
2523         struct osd_object *obj = osd_dt_obj(dt);
2524         struct inode      *inode = obj->oo_inode;
2525
2526         LINVRNT(osd_invariant(obj));
2527         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2528         LASSERT(osd_write_locked(env, obj));
2529         LASSERT(th != NULL);
2530
2531         osd_trans_exec_op(env, th, OSD_OT_REF_DEL);
2532
2533         spin_lock(&obj->oo_guard);
2534         LASSERT(inode->i_nlink > 0);
2535         drop_nlink(inode);
2536         /* If this is/was a many-subdir directory (nlink > LDISKFS_LINK_MAX)
2537          * then the nlink count is 1. Don't let it be set to 0 or the directory
2538          * inode will be deleted incorrectly. */
2539         if (S_ISDIR(inode->i_mode) && inode->i_nlink == 0)
2540                 set_nlink(inode, 1);
2541         spin_unlock(&obj->oo_guard);
2542         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2543         LINVRNT(osd_invariant(obj));
2544
2545         return 0;
2546 }
2547
2548 /*
2549  * Get the 64-bit version for an inode.
2550  */
2551 static int osd_object_version_get(const struct lu_env *env,
2552                                   struct dt_object *dt, dt_obj_version_t *ver)
2553 {
2554         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2555
2556         CDEBUG(D_INODE, "Get version "LPX64" for inode %lu\n",
2557                LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2558         *ver = LDISKFS_I(inode)->i_fs_version;
2559         return 0;
2560 }
2561
2562 /*
2563  * Concurrency: @dt is read locked.
2564  */
2565 static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
2566                          struct lu_buf *buf, const char *name,
2567                          struct lustre_capa *capa)
2568 {
2569         struct osd_object      *obj    = osd_dt_obj(dt);
2570         struct inode           *inode  = obj->oo_inode;
2571         struct osd_thread_info *info   = osd_oti_get(env);
2572         struct dentry          *dentry = &info->oti_obj_dentry;
2573
2574         /* version get is not real XATTR but uses xattr API */
2575         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2576                 /* for version we are just using xattr API but change inode
2577                  * field instead */
2578                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2579                 osd_object_version_get(env, dt, buf->lb_buf);
2580                 return sizeof(dt_obj_version_t);
2581         }
2582
2583         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2584         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
2585
2586         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2587                 return -EACCES;
2588
2589         return __osd_xattr_get(inode, dentry, name, buf->lb_buf, buf->lb_len);
2590 }
2591
2592
2593 static int osd_declare_xattr_set(const struct lu_env *env,
2594                                  struct dt_object *dt,
2595                                  const struct lu_buf *buf, const char *name,
2596                                  int fl, struct thandle *handle)
2597 {
2598         struct osd_thandle *oh;
2599
2600         LASSERT(handle != NULL);
2601
2602         oh = container_of0(handle, struct osd_thandle, ot_super);
2603         LASSERT(oh->ot_handle == NULL);
2604
2605         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET,
2606                              strcmp(name, XATTR_NAME_VERSION) == 0 ?
2607                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE] :
2608                              osd_dto_credits_noquota[DTO_XATTR_SET]);
2609
2610         return 0;
2611 }
2612
2613 /*
2614  * Set the 64-bit version for object
2615  */
2616 static void osd_object_version_set(const struct lu_env *env,
2617                                    struct dt_object *dt,
2618                                    dt_obj_version_t *new_version)
2619 {
2620         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2621
2622         CDEBUG(D_INODE, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2623                *new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2624
2625         LDISKFS_I(inode)->i_fs_version = *new_version;
2626         /** Version is set after all inode operations are finished,
2627          *  so we should mark it dirty here */
2628         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2629 }
2630
2631 /*
2632  * Concurrency: @dt is write locked.
2633  */
2634 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2635                          const struct lu_buf *buf, const char *name, int fl,
2636                          struct thandle *handle, struct lustre_capa *capa)
2637 {
2638         struct osd_object      *obj      = osd_dt_obj(dt);
2639         struct inode           *inode    = obj->oo_inode;
2640         struct osd_thread_info *info     = osd_oti_get(env);
2641         int                     fs_flags = 0;
2642         ENTRY;
2643
2644         LASSERT(handle != NULL);
2645
2646         /* version set is not real XATTR */
2647         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2648                 /* for version we are just using xattr API but change inode
2649                  * field instead */
2650                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2651                 osd_object_version_set(env, dt, buf->lb_buf);
2652                 return sizeof(dt_obj_version_t);
2653         }
2654
2655         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
2656                 return -EACCES;
2657
2658         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
2659         if (fl & LU_XATTR_REPLACE)
2660                 fs_flags |= XATTR_REPLACE;
2661
2662         if (fl & LU_XATTR_CREATE)
2663                 fs_flags |= XATTR_CREATE;
2664
2665         return __osd_xattr_set(info, inode, name, buf->lb_buf, buf->lb_len,
2666                                fs_flags);
2667 }
2668
2669 /*
2670  * Concurrency: @dt is read locked.
2671  */
2672 static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
2673                           struct lu_buf *buf, struct lustre_capa *capa)
2674 {
2675         struct osd_object      *obj    = osd_dt_obj(dt);
2676         struct inode           *inode  = obj->oo_inode;
2677         struct osd_thread_info *info   = osd_oti_get(env);
2678         struct dentry          *dentry = &info->oti_obj_dentry;
2679
2680         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2681         LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
2682         LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
2683
2684         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2685                 return -EACCES;
2686
2687         dentry->d_inode = inode;
2688         dentry->d_sb = inode->i_sb;
2689         return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
2690 }
2691
2692 static int osd_declare_xattr_del(const struct lu_env *env,
2693                                  struct dt_object *dt, const char *name,
2694                                  struct thandle *handle)
2695 {
2696         struct osd_thandle *oh;
2697
2698         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2699         LASSERT(handle != NULL);
2700
2701         oh = container_of0(handle, struct osd_thandle, ot_super);
2702         LASSERT(oh->ot_handle == NULL);
2703
2704         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET,
2705                              osd_dto_credits_noquota[DTO_XATTR_SET]);
2706
2707         return 0;
2708 }
2709
2710 /*
2711  * Concurrency: @dt is write locked.
2712  */
2713 static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
2714                          const char *name, struct thandle *handle,
2715                          struct lustre_capa *capa)
2716 {
2717         struct osd_object      *obj    = osd_dt_obj(dt);
2718         struct inode           *inode  = obj->oo_inode;
2719         struct osd_thread_info *info   = osd_oti_get(env);
2720         struct dentry          *dentry = &info->oti_obj_dentry;
2721         int                     rc;
2722
2723         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2724         LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
2725         LASSERT(handle != NULL);
2726
2727         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
2728                 return -EACCES;
2729
2730         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
2731
2732         ll_vfs_dq_init(inode);
2733         dentry->d_inode = inode;
2734         dentry->d_sb = inode->i_sb;
2735         rc = inode->i_op->removexattr(dentry, name);
2736         return rc;
2737 }
2738
2739 static struct obd_capa *osd_capa_get(const struct lu_env *env,
2740                                      struct dt_object *dt,
2741                                      struct lustre_capa *old,
2742                                      __u64 opc)
2743 {
2744         struct osd_thread_info *info = osd_oti_get(env);
2745         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
2746         struct osd_object *obj = osd_dt_obj(dt);
2747         struct osd_device *dev = osd_obj2dev(obj);
2748         struct lustre_capa_key *key = &info->oti_capa_key;
2749         struct lustre_capa *capa = &info->oti_capa;
2750         struct obd_capa *oc;
2751         struct md_capainfo *ci;
2752         int rc;
2753         ENTRY;
2754
2755         if (!dev->od_fl_capa)
2756                 RETURN(ERR_PTR(-ENOENT));
2757
2758         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2759         LINVRNT(osd_invariant(obj));
2760
2761         /* renewal sanity check */
2762         if (old && osd_object_auth(env, dt, old, opc))
2763                 RETURN(ERR_PTR(-EACCES));
2764
2765         ci = md_capainfo(env);
2766         if (unlikely(!ci))
2767                 RETURN(ERR_PTR(-ENOENT));
2768
2769         switch (ci->mc_auth) {
2770         case LC_ID_NONE:
2771                 RETURN(NULL);
2772         case LC_ID_PLAIN:
2773                 capa->lc_uid = obj->oo_inode->i_uid;
2774                 capa->lc_gid = obj->oo_inode->i_gid;
2775                 capa->lc_flags = LC_ID_PLAIN;
2776                 break;
2777         case LC_ID_CONVERT: {
2778                 __u32 d[4], s[4];
2779
2780                 s[0] = obj->oo_inode->i_uid;
2781                 cfs_get_random_bytes(&(s[1]), sizeof(__u32));
2782                 s[2] = obj->oo_inode->i_gid;
2783                 cfs_get_random_bytes(&(s[3]), sizeof(__u32));
2784                 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
2785                 if (unlikely(rc))
2786                         RETURN(ERR_PTR(rc));
2787
2788                 capa->lc_uid   = ((__u64)d[1] << 32) | d[0];
2789                 capa->lc_gid   = ((__u64)d[3] << 32) | d[2];
2790                 capa->lc_flags = LC_ID_CONVERT;
2791                 break;
2792         }
2793         default:
2794                 RETURN(ERR_PTR(-EINVAL));
2795         }
2796
2797         capa->lc_fid = *fid;
2798         capa->lc_opc = opc;
2799         capa->lc_flags |= dev->od_capa_alg << 24;
2800         capa->lc_timeout = dev->od_capa_timeout;
2801         capa->lc_expiry = 0;
2802
2803         oc = capa_lookup(dev->od_capa_hash, capa, 1);
2804         if (oc) {
2805                 LASSERT(!capa_is_expired(oc));
2806                 RETURN(oc);
2807         }
2808
2809         spin_lock(&capa_lock);
2810         *key = dev->od_capa_keys[1];
2811         spin_unlock(&capa_lock);
2812
2813         capa->lc_keyid = key->lk_keyid;
2814         capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
2815
2816         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
2817         if (rc) {
2818                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
2819                 RETURN(ERR_PTR(rc));
2820         }
2821
2822         oc = capa_add(dev->od_capa_hash, capa);
2823         RETURN(oc);
2824 }
2825
2826 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt)
2827 {
2828         struct osd_object       *obj    = osd_dt_obj(dt);
2829         struct inode            *inode  = obj->oo_inode;
2830         struct osd_thread_info  *info   = osd_oti_get(env);
2831         struct dentry           *dentry = &info->oti_obj_dentry;
2832         struct file             *file   = &info->oti_file;
2833         int                     rc;
2834
2835         ENTRY;
2836
2837         dentry->d_inode = inode;
2838         dentry->d_sb = inode->i_sb;
2839         file->f_dentry = dentry;
2840         file->f_mapping = inode->i_mapping;
2841         file->f_op = inode->i_fop;
2842 #ifndef HAVE_FILE_FSYNC_4ARGS
2843         mutex_lock(&inode->i_mutex);
2844 #endif
2845         rc = do_fsync(file, 0);
2846 #ifndef HAVE_FILE_FSYNC_4ARGS
2847         mutex_unlock(&inode->i_mutex);
2848 #endif
2849         RETURN(rc);
2850 }
2851
2852 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
2853                         void **data)
2854 {
2855         struct osd_object *obj = osd_dt_obj(dt);
2856         ENTRY;
2857
2858         *data = (void *)obj->oo_inode;
2859         RETURN(0);
2860 }
2861
2862 /*
2863  * Index operations.
2864  */
2865
2866 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
2867                            const struct dt_index_features *feat)
2868 {
2869         struct iam_descr *descr;
2870
2871         if (osd_object_is_root(o))
2872                 return feat == &dt_directory_features;
2873
2874         LASSERT(o->oo_dir != NULL);
2875
2876         descr = o->oo_dir->od_container.ic_descr;
2877         if (feat == &dt_directory_features) {
2878                 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
2879                         return 1;
2880                 else
2881                         return 0;
2882         } else {
2883                 return
2884                         feat->dif_keysize_min <= descr->id_key_size &&
2885                         descr->id_key_size <= feat->dif_keysize_max &&
2886                         feat->dif_recsize_min <= descr->id_rec_size &&
2887                         descr->id_rec_size <= feat->dif_recsize_max &&
2888                         !(feat->dif_flags & (DT_IND_VARKEY |
2889                                              DT_IND_VARREC | DT_IND_NONUNQ)) &&
2890                         ergo(feat->dif_flags & DT_IND_UPDATE,
2891                              1 /* XXX check that object (and file system) is
2892                                 * writable */);
2893         }
2894 }
2895
2896 static int osd_iam_container_init(const struct lu_env *env,
2897                                   struct osd_object *obj,
2898                                   struct osd_directory *dir)
2899 {
2900         struct iam_container *bag = &dir->od_container;
2901         int result;
2902
2903         result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
2904         if (result != 0)
2905                 return result;
2906
2907         result = iam_container_setup(bag);
2908         if (result == 0)
2909                 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
2910         else
2911                 iam_container_fini(bag);
2912
2913         return result;
2914 }
2915
2916
2917 /*
2918  * Concurrency: no external locking is necessary.
2919  */
2920 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
2921                          const struct dt_index_features *feat)
2922 {
2923         int                      result;
2924         int                      skip_iam = 0;
2925         struct osd_object       *obj = osd_dt_obj(dt);
2926
2927         LINVRNT(osd_invariant(obj));
2928
2929         if (osd_object_is_root(obj)) {
2930                 dt->do_index_ops = &osd_index_ea_ops;
2931                 result = 0;
2932         } else if (feat == &dt_directory_features) {
2933                 dt->do_index_ops = &osd_index_ea_ops;
2934                 if (obj->oo_inode != NULL && S_ISDIR(obj->oo_inode->i_mode))
2935                         result = 0;
2936                 else
2937                         result = -ENOTDIR;
2938                 skip_iam = 1;
2939         } else if (unlikely(feat == &dt_otable_features)) {
2940                 dt->do_index_ops = &osd_otable_ops;
2941                 return 0;
2942         } else if (unlikely(feat == &dt_acct_features)) {
2943                 dt->do_index_ops = &osd_acct_index_ops;
2944                 result = 0;
2945                 skip_iam = 1;
2946         } else if (!osd_has_index(obj)) {
2947                 struct osd_directory *dir;
2948
2949                 OBD_ALLOC_PTR(dir);
2950                 if (dir != NULL) {
2951
2952                         spin_lock(&obj->oo_guard);
2953                         if (obj->oo_dir == NULL)
2954                                 obj->oo_dir = dir;
2955                         else
2956                                 /*
2957                                  * Concurrent thread allocated container data.
2958                                  */
2959                                 OBD_FREE_PTR(dir);
2960                         spin_unlock(&obj->oo_guard);
2961                         /*
2962                          * Now, that we have container data, serialize its
2963                          * initialization.
2964                          */
2965                         down_write(&obj->oo_ext_idx_sem);
2966                         /*
2967                          * recheck under lock.
2968                          */
2969                         if (!osd_has_index(obj))
2970                                 result = osd_iam_container_init(env, obj, dir);
2971                         else
2972                                 result = 0;
2973                         up_write(&obj->oo_ext_idx_sem);
2974                 } else {
2975                         result = -ENOMEM;
2976                 }
2977         } else {
2978                 result = 0;
2979         }
2980
2981         if (result == 0 && skip_iam == 0) {
2982                 if (!osd_iam_index_probe(env, obj, feat))
2983                         result = -ENOTDIR;
2984         }
2985         LINVRNT(osd_invariant(obj));
2986
2987         if (result == 0 && is_quota_glb_feat(feat) &&
2988             fid_seq(lu_object_fid(&dt->do_lu)) == FID_SEQ_QUOTA_GLB)
2989                 result = osd_quota_migration(env, dt, feat);
2990
2991         return result;
2992 }
2993
2994 static int osd_otable_it_attr_get(const struct lu_env *env,
2995                                  struct dt_object *dt,
2996                                  struct lu_attr *attr,
2997                                  struct lustre_capa *capa)
2998 {
2999         attr->la_valid = 0;
3000         return 0;
3001 }
3002
3003 static const struct dt_object_operations osd_obj_ops = {
3004         .do_read_lock         = osd_object_read_lock,
3005         .do_write_lock        = osd_object_write_lock,
3006         .do_read_unlock       = osd_object_read_unlock,
3007         .do_write_unlock      = osd_object_write_unlock,
3008         .do_write_locked      = osd_object_write_locked,
3009         .do_attr_get          = osd_attr_get,
3010         .do_declare_attr_set  = osd_declare_attr_set,
3011         .do_attr_set          = osd_attr_set,
3012         .do_ah_init           = osd_ah_init,
3013         .do_declare_create    = osd_declare_object_create,
3014         .do_create            = osd_object_create,
3015         .do_declare_destroy   = osd_declare_object_destroy,
3016         .do_destroy           = osd_object_destroy,
3017         .do_index_try         = osd_index_try,
3018         .do_declare_ref_add   = osd_declare_object_ref_add,
3019         .do_ref_add           = osd_object_ref_add,
3020         .do_declare_ref_del   = osd_declare_object_ref_del,
3021         .do_ref_del           = osd_object_ref_del,
3022         .do_xattr_get         = osd_xattr_get,
3023         .do_declare_xattr_set = osd_declare_xattr_set,
3024         .do_xattr_set         = osd_xattr_set,
3025         .do_declare_xattr_del = osd_declare_xattr_del,
3026         .do_xattr_del         = osd_xattr_del,
3027         .do_xattr_list        = osd_xattr_list,
3028         .do_capa_get          = osd_capa_get,
3029         .do_object_sync       = osd_object_sync,
3030         .do_data_get          = osd_data_get,
3031 };
3032
3033 /**
3034  * dt_object_operations for interoperability mode
3035  * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
3036  */
3037 static const struct dt_object_operations osd_obj_ea_ops = {
3038         .do_read_lock         = osd_object_read_lock,
3039         .do_write_lock        = osd_object_write_lock,
3040         .do_read_unlock       = osd_object_read_unlock,
3041         .do_write_unlock      = osd_object_write_unlock,
3042         .do_write_locked      = osd_object_write_locked,
3043         .do_attr_get          = osd_attr_get,
3044         .do_declare_attr_set  = osd_declare_attr_set,
3045         .do_attr_set          = osd_attr_set,
3046         .do_ah_init           = osd_ah_init,
3047         .do_declare_create    = osd_declare_object_create,
3048         .do_create            = osd_object_ea_create,
3049         .do_declare_destroy   = osd_declare_object_destroy,
3050         .do_destroy           = osd_object_destroy,
3051         .do_index_try         = osd_index_try,
3052         .do_declare_ref_add   = osd_declare_object_ref_add,
3053         .do_ref_add           = osd_object_ref_add,
3054         .do_declare_ref_del   = osd_declare_object_ref_del,
3055         .do_ref_del           = osd_object_ref_del,
3056         .do_xattr_get         = osd_xattr_get,
3057         .do_declare_xattr_set = osd_declare_xattr_set,
3058         .do_xattr_set         = osd_xattr_set,
3059         .do_declare_xattr_del = osd_declare_xattr_del,
3060         .do_xattr_del         = osd_xattr_del,
3061         .do_xattr_list        = osd_xattr_list,
3062         .do_capa_get          = osd_capa_get,
3063         .do_object_sync       = osd_object_sync,
3064         .do_data_get          = osd_data_get,
3065 };
3066
3067 static const struct dt_object_operations osd_obj_otable_it_ops = {
3068         .do_attr_get    = osd_otable_it_attr_get,
3069         .do_index_try   = osd_index_try,
3070 };
3071
3072 static int osd_index_declare_iam_delete(const struct lu_env *env,
3073                                         struct dt_object *dt,
3074                                         const struct dt_key *key,
3075                                         struct thandle *handle)
3076 {
3077         struct osd_thandle    *oh;
3078
3079         oh = container_of0(handle, struct osd_thandle, ot_super);
3080         LASSERT(oh->ot_handle == NULL);
3081
3082         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3083                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3084
3085         return 0;
3086 }
3087
3088 /**
3089  *      delete a (key, value) pair from index \a dt specified by \a key
3090  *
3091  *      \param  dt      osd index object
3092  *      \param  key     key for index
3093  *      \param  rec     record reference
3094  *      \param  handle  transaction handler
3095  *
3096  *      \retval  0  success
3097  *      \retval -ve   failure
3098  */
3099
3100 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
3101                                 const struct dt_key *key,
3102                                 struct thandle *handle,
3103                                 struct lustre_capa *capa)
3104 {
3105         struct osd_thread_info *oti = osd_oti_get(env);
3106         struct osd_object      *obj = osd_dt_obj(dt);
3107         struct osd_thandle     *oh;
3108         struct iam_path_descr  *ipd;
3109         struct iam_container   *bag = &obj->oo_dir->od_container;
3110         int                     rc;
3111
3112         ENTRY;
3113
3114         LINVRNT(osd_invariant(obj));
3115         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3116         LASSERT(bag->ic_object == obj->oo_inode);
3117         LASSERT(handle != NULL);
3118
3119         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3120                 RETURN(-EACCES);
3121
3122         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3123
3124         ipd = osd_idx_ipd_get(env, bag);
3125         if (unlikely(ipd == NULL))
3126                 RETURN(-ENOMEM);
3127
3128         oh = container_of0(handle, struct osd_thandle, ot_super);
3129         LASSERT(oh->ot_handle != NULL);
3130         LASSERT(oh->ot_handle->h_transaction != NULL);
3131
3132         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3133                 /* swab quota uid/gid provided by caller */
3134                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3135                 key = (const struct dt_key *)&oti->oti_quota_id;
3136         }
3137
3138         rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
3139         osd_ipd_put(env, bag, ipd);
3140         LINVRNT(osd_invariant(obj));
3141         RETURN(rc);
3142 }
3143
3144 static int osd_index_declare_ea_delete(const struct lu_env *env,
3145                                        struct dt_object *dt,
3146                                        const struct dt_key *key,
3147                                        struct thandle *handle)
3148 {
3149         struct osd_thandle *oh;
3150         struct inode       *inode;
3151         int                 rc;
3152         ENTRY;
3153
3154         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3155         LASSERT(handle != NULL);
3156
3157         oh = container_of0(handle, struct osd_thandle, ot_super);
3158         LASSERT(oh->ot_handle == NULL);
3159
3160         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3161                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3162
3163         inode = osd_dt_obj(dt)->oo_inode;
3164         LASSERT(inode);
3165
3166         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0, oh,
3167                                    true, true, NULL, false);
3168         RETURN(rc);
3169 }
3170
3171 static inline int osd_get_fid_from_dentry(struct ldiskfs_dir_entry_2 *de,
3172                                           struct dt_rec *fid)
3173 {
3174         struct osd_fid_pack *rec;
3175         int                  rc = -ENODATA;
3176
3177         if (de->file_type & LDISKFS_DIRENT_LUFID) {
3178                 rec = (struct osd_fid_pack *) (de->name + de->name_len + 1);
3179                 rc = osd_fid_unpack((struct lu_fid *)fid, rec);
3180         }
3181         return rc;
3182 }
3183
3184 static int osd_remote_fid(const struct lu_env *env, struct osd_device *osd,
3185                           struct lu_fid *fid)
3186 {
3187         struct lu_seq_range     *range = &osd_oti_get(env)->oti_seq_range;
3188         struct seq_server_site  *ss = osd_seq_site(osd);
3189         int                     rc;
3190         ENTRY;
3191
3192         /* Those FID seqs, which are not in FLDB, must be local seq */
3193         if (unlikely(!fid_seq_in_fldb(fid_seq(fid)) || ss == NULL))
3194                 RETURN(0);
3195
3196         rc = osd_fld_lookup(env, osd, fid, range);
3197         if (rc != 0) {
3198                 CERROR("%s: Can not lookup fld for "DFID"\n",
3199                        osd_name(osd), PFID(fid));
3200                 RETURN(rc);
3201         }
3202
3203         RETURN(ss->ss_node_id != range->lsr_index);
3204 }
3205
3206 /**
3207  * Index delete function for interoperability mode (b11826).
3208  * It will remove the directory entry added by osd_index_ea_insert().
3209  * This entry is needed to maintain name->fid mapping.
3210  *
3211  * \param key,  key i.e. file entry to be deleted
3212  *
3213  * \retval   0, on success
3214  * \retval -ve, on error
3215  */
3216 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
3217                                const struct dt_key *key,
3218                                struct thandle *handle,
3219                                struct lustre_capa *capa)
3220 {
3221         struct osd_object          *obj    = osd_dt_obj(dt);
3222         struct inode               *dir    = obj->oo_inode;
3223         struct dentry              *dentry;
3224         struct osd_thandle         *oh;
3225         struct ldiskfs_dir_entry_2 *de = NULL;
3226         struct buffer_head         *bh;
3227         struct htree_lock          *hlock = NULL;
3228         struct lu_fid              *fid = &osd_oti_get(env)->oti_fid;
3229         struct osd_device          *osd = osd_dev(dt->do_lu.lo_dev);
3230         int                        rc;
3231         ENTRY;
3232
3233         LINVRNT(osd_invariant(obj));
3234         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3235         LASSERT(handle != NULL);
3236
3237         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3238
3239         oh = container_of(handle, struct osd_thandle, ot_super);
3240         LASSERT(oh->ot_handle != NULL);
3241         LASSERT(oh->ot_handle->h_transaction != NULL);
3242
3243         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3244                 RETURN(-EACCES);
3245
3246         ll_vfs_dq_init(dir);
3247         dentry = osd_child_dentry_get(env, obj,
3248                                       (char *)key, strlen((char *)key));
3249
3250         if (obj->oo_hl_head != NULL) {
3251                 hlock = osd_oti_get(env)->oti_hlock;
3252                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3253                                    dir, LDISKFS_HLOCK_DEL);
3254         } else {
3255                 down_write(&obj->oo_ext_idx_sem);
3256         }
3257
3258         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
3259         if (bh) {
3260                 __u32 ino = 0;
3261
3262                 /* Tried to delete local agent inode for the entries,
3263                  * If it tries to delete .., which only happens during
3264                  * rename or move the dir to /ORPHAN, even .. might
3265                  * point to the remote parent, but it do not have
3266                  * local agent inode, so we do not need check .. at all,
3267                  * Note: we need delete entry first, then inode to keep
3268                  * lfsck safe. */
3269                 if (strcmp((char *)key, dotdot) != 0) {
3270                         LASSERT(de != NULL);
3271                         rc = osd_get_fid_from_dentry(de, (struct dt_rec *)fid);
3272                         if (rc == 0 &&
3273                             unlikely(osd_remote_fid(env, osd, fid)))
3274                                 /* Need to delete agent inode */
3275                                 ino = le32_to_cpu(de->inode);
3276                 }
3277                 rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh);
3278                 brelse(bh);
3279                 if (rc == 0 && unlikely(ino != 0)) {
3280                         rc = osd_delete_local_agent_inode(env, osd, fid, ino,
3281                                                           oh);
3282                         if (rc != 0)
3283                                 CERROR("%s: del local inode "DFID": rc = %d\n",
3284                                        osd_name(osd), PFID(fid), rc);
3285                 }
3286         } else {
3287                 rc = -ENOENT;
3288         }
3289         if (hlock != NULL)
3290                 ldiskfs_htree_unlock(hlock);
3291         else
3292                 up_write(&obj->oo_ext_idx_sem);
3293
3294         if (rc != 0)
3295                 GOTO(out, rc);
3296
3297         /* For inode on the remote MDT, .. will point to
3298          * /Agent directory, Check whether it needs to delete
3299          * from agent directory */
3300         if (unlikely(strcmp((char *)key, dotdot) == 0)) {
3301                 rc = osd_delete_from_remote_parent(env, osd_obj2dev(obj), obj,
3302                                                    oh);
3303                 if (rc != 0 && rc != -ENOENT) {
3304                         CERROR("%s: delete agent inode "DFID": rc = %d\n",
3305                                osd_name(osd), PFID(fid), rc);
3306                 }
3307
3308                 if (rc == -ENOENT)
3309                         rc = 0;
3310
3311                 GOTO(out, rc);
3312         }
3313 out:
3314
3315         LASSERT(osd_invariant(obj));
3316         RETURN(rc);
3317 }
3318
3319 /**
3320  *      Lookup index for \a key and copy record to \a rec.
3321  *
3322  *      \param  dt      osd index object
3323  *      \param  key     key for index
3324  *      \param  rec     record reference
3325  *
3326  *      \retval  +ve  success : exact mach
3327  *      \retval  0    return record with key not greater than \a key
3328  *      \retval -ve   failure
3329  */
3330 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
3331                                 struct dt_rec *rec, const struct dt_key *key,
3332                                 struct lustre_capa *capa)
3333 {
3334         struct osd_object      *obj = osd_dt_obj(dt);
3335         struct iam_path_descr  *ipd;
3336         struct iam_container   *bag = &obj->oo_dir->od_container;
3337         struct osd_thread_info *oti = osd_oti_get(env);
3338         struct iam_iterator    *it = &oti->oti_idx_it;
3339         struct iam_rec         *iam_rec;
3340         int                     rc;
3341
3342         ENTRY;
3343
3344         LASSERT(osd_invariant(obj));
3345         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3346         LASSERT(bag->ic_object == obj->oo_inode);
3347
3348         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3349                 RETURN(-EACCES);
3350
3351         ipd = osd_idx_ipd_get(env, bag);
3352         if (IS_ERR(ipd))
3353                 RETURN(-ENOMEM);
3354
3355         /* got ipd now we can start iterator. */
3356         iam_it_init(it, bag, 0, ipd);
3357
3358         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3359                 /* swab quota uid/gid provided by caller */
3360                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3361                 key = (const struct dt_key *)&oti->oti_quota_id;
3362         }
3363
3364         rc = iam_it_get(it, (struct iam_key *)key);
3365         if (rc >= 0) {
3366                 if (S_ISDIR(obj->oo_inode->i_mode))
3367                         iam_rec = (struct iam_rec *)oti->oti_ldp;
3368                 else
3369                         iam_rec = (struct iam_rec *) rec;
3370
3371                 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
3372
3373                 if (S_ISDIR(obj->oo_inode->i_mode))
3374                         osd_fid_unpack((struct lu_fid *) rec,
3375                                        (struct osd_fid_pack *)iam_rec);
3376                 else if (fid_is_quota(lu_object_fid(&dt->do_lu)))
3377                         osd_quota_unpack(obj, rec);
3378         }
3379
3380         iam_it_put(it);
3381         iam_it_fini(it);
3382         osd_ipd_put(env, bag, ipd);
3383
3384         LINVRNT(osd_invariant(obj));
3385
3386         RETURN(rc);
3387 }
3388
3389 static int osd_index_declare_iam_insert(const struct lu_env *env,
3390                                         struct dt_object *dt,
3391                                         const struct dt_rec *rec,
3392                                         const struct dt_key *key,
3393                                         struct thandle *handle)
3394 {
3395         struct osd_thandle *oh;
3396
3397         LASSERT(handle != NULL);
3398
3399         oh = container_of0(handle, struct osd_thandle, ot_super);
3400         LASSERT(oh->ot_handle == NULL);
3401
3402         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3403                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
3404
3405         return 0;
3406 }
3407
3408 /**
3409  *      Inserts (key, value) pair in \a dt index object.
3410  *
3411  *      \param  dt      osd index object
3412  *      \param  key     key for index
3413  *      \param  rec     record reference
3414  *      \param  th      transaction handler
3415  *
3416  *      \retval  0  success
3417  *      \retval -ve failure
3418  */
3419 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
3420                                 const struct dt_rec *rec,
3421                                 const struct dt_key *key, struct thandle *th,
3422                                 struct lustre_capa *capa, int ignore_quota)
3423 {
3424         struct osd_object     *obj = osd_dt_obj(dt);
3425         struct iam_path_descr *ipd;
3426         struct osd_thandle    *oh;
3427         struct iam_container  *bag = &obj->oo_dir->od_container;
3428         struct osd_thread_info *oti = osd_oti_get(env);
3429         struct iam_rec         *iam_rec;
3430         int                     rc;
3431
3432         ENTRY;
3433
3434         LINVRNT(osd_invariant(obj));
3435         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3436         LASSERT(bag->ic_object == obj->oo_inode);
3437         LASSERT(th != NULL);
3438
3439         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3440                 RETURN(-EACCES);
3441
3442         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3443
3444         ipd = osd_idx_ipd_get(env, bag);
3445         if (unlikely(ipd == NULL))
3446                 RETURN(-ENOMEM);
3447
3448         oh = container_of0(th, struct osd_thandle, ot_super);
3449         LASSERT(oh->ot_handle != NULL);
3450         LASSERT(oh->ot_handle->h_transaction != NULL);
3451         if (S_ISDIR(obj->oo_inode->i_mode)) {
3452                 iam_rec = (struct iam_rec *)oti->oti_ldp;
3453                 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
3454         } else if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3455                 /* pack quota uid/gid */
3456                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3457                 key = (const struct dt_key *)&oti->oti_quota_id;
3458                 /* pack quota record */
3459                 rec = osd_quota_pack(obj, rec, &oti->oti_quota_rec);
3460                 iam_rec = (struct iam_rec *)rec;
3461         } else {
3462                 iam_rec = (struct iam_rec *)rec;
3463         }
3464
3465         rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
3466                         iam_rec, ipd);
3467         osd_ipd_put(env, bag, ipd);
3468         LINVRNT(osd_invariant(obj));
3469         RETURN(rc);
3470 }
3471
3472 /**
3473  * Calls ldiskfs_add_entry() to add directory entry
3474  * into the directory. This is required for
3475  * interoperability mode (b11826)
3476  *
3477  * \retval   0, on success
3478  * \retval -ve, on error
3479  */
3480 static int __osd_ea_add_rec(struct osd_thread_info *info,
3481                             struct osd_object *pobj, struct inode  *cinode,
3482                             const char *name, const struct dt_rec *fid,
3483                             struct htree_lock *hlock, struct thandle *th)
3484 {
3485         struct ldiskfs_dentry_param *ldp;
3486         struct dentry               *child;
3487         struct osd_thandle          *oth;
3488         int                          rc;
3489
3490         oth = container_of(th, struct osd_thandle, ot_super);
3491         LASSERT(oth->ot_handle != NULL);
3492         LASSERT(oth->ot_handle->h_transaction != NULL);
3493         LASSERT(pobj->oo_inode);
3494
3495         ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3496         if (unlikely(pobj->oo_inode ==
3497                      osd_sb(osd_obj2dev(pobj))->s_root->d_inode))
3498                 ldp->edp_magic = 0;
3499         else
3500                 osd_get_ldiskfs_dirent_param(ldp, fid);
3501         child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
3502         child->d_fsdata = (void *)ldp;
3503         ll_vfs_dq_init(pobj->oo_inode);
3504         rc = osd_ldiskfs_add_entry(oth->ot_handle, child, cinode, hlock);
3505
3506         RETURN(rc);
3507 }
3508
3509 /**
3510  * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
3511  * into the directory.Also sets flags into osd object to
3512  * indicate dot and dotdot are created. This is required for
3513  * interoperability mode (b11826)
3514  *
3515  * \param dir   directory for dot and dotdot fixup.
3516  * \param obj   child object for linking
3517  *
3518  * \retval   0, on success
3519  * \retval -ve, on error
3520  */
3521 static int osd_add_dot_dotdot(struct osd_thread_info *info,
3522                               struct osd_object *dir,
3523                               struct inode  *parent_dir, const char *name,
3524                               const struct dt_rec *dot_fid,
3525                               const struct dt_rec *dot_dot_fid,
3526                               struct thandle *th)
3527 {
3528         struct inode                *inode = dir->oo_inode;
3529         struct osd_thandle          *oth;
3530         int result = 0;
3531
3532         oth = container_of(th, struct osd_thandle, ot_super);
3533         LASSERT(oth->ot_handle->h_transaction != NULL);
3534         LASSERT(S_ISDIR(dir->oo_inode->i_mode));
3535
3536         if (strcmp(name, dot) == 0) {
3537                 if (dir->oo_compat_dot_created) {
3538                         result = -EEXIST;
3539                 } else {
3540                         LASSERT(inode == parent_dir);
3541                         dir->oo_compat_dot_created = 1;
3542                         result = 0;
3543                 }
3544         } else if (strcmp(name, dotdot) == 0) {
3545                 if (!dir->oo_compat_dot_created)
3546                         return -EINVAL;
3547                 /* in case of rename, dotdot is already created */
3548                 if (dir->oo_compat_dotdot_created) {
3549                         return __osd_ea_add_rec(info, dir, parent_dir, name,
3550                                                 dot_dot_fid, NULL, th);
3551                 }
3552
3553                 result = osd_add_dot_dotdot_internal(info, dir->oo_inode,
3554                                                 parent_dir, dot_fid,
3555                                                 dot_dot_fid, oth);
3556                 if (result == 0)
3557                         dir->oo_compat_dotdot_created = 1;
3558         }
3559
3560         return result;
3561 }
3562
3563
3564 /**
3565  * It will call the appropriate osd_add* function and return the
3566  * value, return by respective functions.
3567  */
3568 static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj,
3569                           struct inode *cinode, const char *name,
3570                           const struct dt_rec *fid, struct thandle *th)
3571 {
3572         struct osd_thread_info *info   = osd_oti_get(env);
3573         struct htree_lock      *hlock;
3574         int                     rc;
3575
3576         hlock = pobj->oo_hl_head != NULL ? info->oti_hlock : NULL;
3577
3578         if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
3579                                                    name[2] =='\0'))) {
3580                 if (hlock != NULL) {
3581                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3582                                            pobj->oo_inode, 0);
3583                 } else {
3584                         down_write(&pobj->oo_ext_idx_sem);
3585                 }
3586                 rc = osd_add_dot_dotdot(info, pobj, cinode, name,
3587                      (struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
3588                                         fid, th);
3589         } else {
3590                 if (hlock != NULL) {
3591                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3592                                            pobj->oo_inode, LDISKFS_HLOCK_ADD);
3593                 } else {
3594                         down_write(&pobj->oo_ext_idx_sem);
3595                 }
3596
3597                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_INDIR)) {
3598                         struct lu_fid *tfid = &info->oti_fid;
3599
3600                         *tfid = *(const struct lu_fid *)fid;
3601                         tfid->f_ver = ~0;
3602                         rc = __osd_ea_add_rec(info, pobj, cinode, name,
3603                                               (const struct dt_rec *)tfid,
3604                                               hlock, th);
3605                 } else {
3606                         rc = __osd_ea_add_rec(info, pobj, cinode, name, fid,
3607                                               hlock, th);
3608                 }
3609         }
3610         if (hlock != NULL)
3611                 ldiskfs_htree_unlock(hlock);
3612         else
3613                 up_write(&pobj->oo_ext_idx_sem);
3614
3615         return rc;
3616 }
3617
3618 static void
3619 osd_consistency_check(struct osd_thread_info *oti, struct osd_device *dev,
3620                       struct osd_idmap_cache *oic)
3621 {
3622         struct osd_scrub    *scrub = &dev->od_scrub;
3623         struct lu_fid       *fid   = &oic->oic_fid;
3624         struct osd_inode_id *id    = &oti->oti_id;
3625         int                  once  = 0;
3626         int                  rc;
3627         ENTRY;
3628
3629         if (!fid_is_norm(fid) && !fid_is_igif(fid))
3630                 RETURN_EXIT;
3631
3632 again:
3633         rc = osd_oi_lookup(oti, dev, fid, id, true);
3634         if (rc != 0 && rc != -ENOENT)
3635                 RETURN_EXIT;
3636
3637         if (rc == 0 && osd_id_eq(id, &oic->oic_lid))
3638                 RETURN_EXIT;
3639
3640         if (thread_is_running(&scrub->os_thread)) {
3641                 rc = osd_oii_insert(dev, oic, rc == -ENOENT);
3642                 /* There is race condition between osd_oi_lookup and OI scrub.
3643                  * The OI scrub finished just after osd_oi_lookup() failure.
3644                  * Under such case, it is unnecessary to trigger OI scrub again,
3645                  * but try to call osd_oi_lookup() again. */
3646                 if (unlikely(rc == -EAGAIN))
3647                         goto again;
3648
3649                 RETURN_EXIT;
3650         }
3651
3652         if (!dev->od_noscrub && ++once == 1) {
3653                 CDEBUG(D_LFSCK, "Trigger OI scrub by RPC for "DFID"\n",
3654                        PFID(fid));
3655                 rc = osd_scrub_start(dev);
3656                 LCONSOLE_ERROR("%.16s: trigger OI scrub by RPC for "DFID
3657                                ", rc = %d [2]\n",
3658                                LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
3659                                PFID(fid), rc);
3660                 if (rc == 0)
3661                         goto again;
3662         }
3663
3664         EXIT;
3665 }
3666
3667 static int osd_fail_fid_lookup(struct osd_thread_info *oti,
3668                                struct osd_device *dev,
3669                                struct osd_idmap_cache *oic,
3670                                struct lu_fid *fid, __u32 ino)
3671 {
3672         struct lustre_mdt_attrs *lma   = &oti->oti_mdt_attrs;
3673         struct inode            *inode;
3674         int                      rc;
3675
3676         osd_id_gen(&oic->oic_lid, ino, OSD_OII_NOGEN);
3677         inode = osd_iget(oti, dev, &oic->oic_lid);
3678         if (IS_ERR(inode)) {
3679                 fid_zero(&oic->oic_fid);
3680                 return PTR_ERR(inode);
3681         }
3682
3683         rc = osd_get_lma(oti, inode, &oti->oti_obj_dentry, lma);
3684         iput(inode);
3685         if (rc != 0)
3686                 fid_zero(&oic->oic_fid);
3687         else
3688                 *fid = oic->oic_fid = lma->lma_self_fid;
3689         return rc;
3690 }
3691
3692 /**
3693  * Calls ->lookup() to find dentry. From dentry get inode and
3694  * read inode's ea to get fid. This is required for  interoperability
3695  * mode (b11826)
3696  *
3697  * \retval   0, on success
3698  * \retval -ve, on error
3699  */
3700 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
3701                              struct dt_rec *rec, const struct dt_key *key)
3702 {
3703         struct inode               *dir    = obj->oo_inode;
3704         struct dentry              *dentry;
3705         struct ldiskfs_dir_entry_2 *de;
3706         struct buffer_head         *bh;
3707         struct lu_fid              *fid = (struct lu_fid *) rec;
3708         struct htree_lock          *hlock = NULL;
3709         int                         ino;
3710         int                         rc;
3711         ENTRY;
3712
3713         LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
3714
3715         dentry = osd_child_dentry_get(env, obj,
3716                                       (char *)key, strlen((char *)key));
3717
3718         if (obj->oo_hl_head != NULL) {
3719                 hlock = osd_oti_get(env)->oti_hlock;
3720                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3721                                    dir, LDISKFS_HLOCK_LOOKUP);
3722         } else {
3723                 down_read(&obj->oo_ext_idx_sem);
3724         }
3725
3726         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
3727         if (bh) {
3728                 struct osd_thread_info *oti = osd_oti_get(env);
3729                 struct osd_inode_id *id = &oti->oti_id;
3730                 struct osd_idmap_cache *oic = &oti->oti_cache;
3731                 struct osd_device *dev = osd_obj2dev(obj);
3732                 struct osd_scrub *scrub = &dev->od_scrub;
3733                 struct scrub_file *sf = &scrub->os_file;
3734
3735                 ino = le32_to_cpu(de->inode);
3736                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP)) {
3737                         brelse(bh);
3738                         rc = osd_fail_fid_lookup(oti, dev, oic, fid, ino);
3739                         GOTO(out, rc);
3740                 }
3741
3742                 rc = osd_get_fid_from_dentry(de, rec);
3743
3744                 /* done with de, release bh */
3745                 brelse(bh);
3746                 if (rc != 0)
3747                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
3748                 else
3749                         osd_id_gen(id, ino, OSD_OII_NOGEN);
3750                 if (rc != 0 || osd_remote_fid(env, dev, fid)) {
3751                         fid_zero(&oic->oic_fid);
3752                         GOTO(out, rc);
3753                 }
3754
3755                 oic->oic_lid = *id;
3756                 oic->oic_fid = *fid;
3757                 if ((scrub->os_pos_current <= ino) &&
3758                     ((sf->sf_flags & SF_INCONSISTENT) ||
3759                      (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
3760                      ldiskfs_test_bit(osd_oi_fid2idx(dev, fid),
3761                                       sf->sf_oi_bitmap)))
3762                         osd_consistency_check(oti, dev, oic);
3763         } else {
3764                 rc = -ENOENT;
3765         }
3766
3767         GOTO(out, rc);
3768
3769 out:
3770         if (hlock != NULL)
3771                 ldiskfs_htree_unlock(hlock);
3772         else
3773                 up_read(&obj->oo_ext_idx_sem);
3774         return rc;
3775 }
3776
3777 /**
3778  * Find the osd object for given fid.
3779  *
3780  * \param fid need to find the osd object having this fid
3781  *
3782  * \retval osd_object on success
3783  * \retval        -ve on error
3784  */
3785 struct osd_object *osd_object_find(const struct lu_env *env,
3786                                    struct dt_object *dt,
3787                                    const struct lu_fid *fid)
3788 {
3789         struct lu_device  *ludev = dt->do_lu.lo_dev;
3790         struct osd_object *child = NULL;
3791         struct lu_object  *luch;
3792         struct lu_object  *lo;
3793
3794         /*
3795          * at this point topdev might not exist yet
3796          * (i.e. MGS is preparing profiles). so we can
3797          * not rely on topdev and instead lookup with
3798          * our device passed as topdev. this can't work
3799          * if the object isn't cached yet (as osd doesn't
3800          * allocate lu_header). IOW, the object must be
3801          * in the cache, otherwise lu_object_alloc() crashes
3802          * -bzzz
3803          */
3804         luch = lu_object_find_at(env, ludev, fid, NULL);
3805         if (!IS_ERR(luch)) {
3806                 if (lu_object_exists(luch)) {
3807                         lo = lu_object_locate(luch->lo_header, ludev->ld_type);
3808                         if (lo != NULL)
3809                                 child = osd_obj(lo);
3810                         else
3811                                 LU_OBJECT_DEBUG(D_ERROR, env, luch,
3812                                                 "lu_object can't be located"
3813                                                 DFID"\n", PFID(fid));
3814
3815                         if (child == NULL) {
3816                                 lu_object_put(env, luch);
3817                                 CERROR("Unable to get osd_object\n");
3818                                 child = ERR_PTR(-ENOENT);
3819                         }
3820                 } else {
3821                         LU_OBJECT_DEBUG(D_ERROR, env, luch,
3822                                         "lu_object does not exists "DFID"\n",
3823                                         PFID(fid));
3824                         lu_object_put(env, luch);
3825                         child = ERR_PTR(-ENOENT);
3826                 }
3827         } else
3828                 child = (void *)luch;
3829
3830         return child;
3831 }
3832
3833 /**
3834  * Put the osd object once done with it.
3835  *
3836  * \param obj osd object that needs to be put
3837  */
3838 static inline void osd_object_put(const struct lu_env *env,
3839                                   struct osd_object *obj)
3840 {
3841         lu_object_put(env, &obj->oo_dt.do_lu);
3842 }
3843
3844 static int osd_index_declare_ea_insert(const struct lu_env *env,
3845                                        struct dt_object *dt,
3846                                        const struct dt_rec *rec,
3847                                        const struct dt_key *key,
3848                                        struct thandle *handle)
3849 {
3850         struct osd_thandle      *oh;
3851         struct osd_device       *osd   = osd_dev(dt->do_lu.lo_dev);
3852         struct lu_fid           *fid = (struct lu_fid *)rec;
3853         int                     rc;
3854         ENTRY;
3855
3856         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3857         LASSERT(handle != NULL);
3858
3859         oh = container_of0(handle, struct osd_thandle, ot_super);
3860         LASSERT(oh->ot_handle == NULL);
3861
3862         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3863                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
3864
3865         if (osd_dt_obj(dt)->oo_inode == NULL) {
3866                 const char *name  = (const char *)key;
3867                 /* Object is not being created yet. Only happens when
3868                  *     1. declare directory create
3869                  *     2. declare insert .
3870                  *     3. declare insert ..
3871                  */
3872                 LASSERT(strcmp(name, dotdot) == 0 || strcmp(name, dot) == 0);
3873         } else {
3874                 struct inode *inode = osd_dt_obj(dt)->oo_inode;
3875
3876                 /* We ignore block quota on meta pool (MDTs), so needn't
3877                  * calculate how many blocks will be consumed by this index
3878                  * insert */
3879                 rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0,
3880                                            oh, true, true, NULL, false);
3881         }
3882
3883         if (fid == NULL)
3884                 RETURN(0);
3885
3886         rc = osd_remote_fid(env, osd, fid);
3887         if (rc <= 0)
3888                 RETURN(rc);
3889
3890         rc = 0;
3891
3892         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
3893                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
3894         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3895                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
3896         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3897                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
3898
3899         RETURN(rc);
3900 }
3901
3902 /**
3903  * Index add function for interoperability mode (b11826).
3904  * It will add the directory entry.This entry is needed to
3905  * maintain name->fid mapping.
3906  *
3907  * \param key it is key i.e. file entry to be inserted
3908  * \param rec it is value of given key i.e. fid
3909  *
3910  * \retval   0, on success
3911  * \retval -ve, on error
3912  */
3913 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
3914                                const struct dt_rec *rec,
3915                                const struct dt_key *key, struct thandle *th,
3916                                struct lustre_capa *capa, int ignore_quota)
3917 {
3918         struct osd_object       *obj = osd_dt_obj(dt);
3919         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
3920         struct lu_fid           *fid = (struct lu_fid *) rec;
3921         const char              *name = (const char *)key;
3922         struct osd_thread_info  *oti   = osd_oti_get(env);
3923         struct osd_inode_id     *id    = &oti->oti_id;
3924         struct inode            *child_inode = NULL;
3925         struct osd_object       *child = NULL;
3926         int                     rc;
3927         ENTRY;
3928
3929         LASSERT(osd_invariant(obj));
3930         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3931         LASSERT(th != NULL);
3932
3933         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3934
3935         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3936                 RETURN(-EACCES);
3937
3938         LASSERTF(fid_is_sane(fid), "fid"DFID" is insane!", PFID(fid));
3939
3940         rc = osd_remote_fid(env, osd, fid);
3941         if (rc < 0) {
3942                 CERROR("%s: Can not find object "DFID" rc %d\n",
3943                        osd_name(osd), PFID(fid), rc);
3944                 RETURN(rc);
3945         }
3946
3947         if (rc == 1) {
3948                 /* Insert remote entry */
3949                 if (strcmp(name, dotdot) == 0 && strlen(name) == 2) {
3950                         struct osd_mdobj_map    *omm = osd->od_mdt_map;
3951                         struct osd_thandle      *oh;
3952
3953                         /* If parent on remote MDT, we need put this object
3954                          * under AGENT */
3955                         oh = container_of(th, typeof(*oh), ot_super);
3956                         rc = osd_add_to_remote_parent(env, osd, obj, oh);
3957                         if (rc != 0) {
3958                                 CERROR("%s: add "DFID" error: rc = %d\n",
3959                                        osd_name(osd),
3960                                        PFID(lu_object_fid(&dt->do_lu)), rc);
3961                                 RETURN(rc);
3962                         }
3963
3964                         child_inode = igrab(omm->omm_remote_parent->d_inode);
3965                 } else {
3966                         child_inode = osd_create_local_agent_inode(env, osd,
3967                                                                    obj, fid,
3968                                                                    th);
3969                         if (IS_ERR(child_inode))
3970                                 RETURN(PTR_ERR(child_inode));
3971                 }
3972         } else {
3973                 /* Insert local entry */
3974                 child = osd_object_find(env, dt, fid);
3975                 if (IS_ERR(child)) {
3976                         CERROR("%s: Can not find object "DFID"%u:%u: rc = %d\n",
3977                                osd_name(osd), PFID(fid),
3978                                id->oii_ino, id->oii_gen,
3979                                (int)PTR_ERR(child_inode));
3980                         RETURN(PTR_ERR(child_inode));
3981                 }
3982                 child_inode = igrab(child->oo_inode);
3983         }
3984
3985         rc = osd_ea_add_rec(env, obj, child_inode, name, rec, th);
3986
3987         iput(child_inode);
3988         if (child != NULL)
3989                 osd_object_put(env, child);
3990         LASSERT(osd_invariant(obj));
3991         RETURN(rc);
3992 }
3993
3994 /**
3995  *  Initialize osd Iterator for given osd index object.
3996  *
3997  *  \param  dt      osd index object
3998  */
3999
4000 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
4001                                      struct dt_object *dt,
4002                                      __u32 unused,
4003                                      struct lustre_capa *capa)
4004 {
4005         struct osd_it_iam      *it;
4006         struct osd_thread_info *oti = osd_oti_get(env);
4007         struct osd_object      *obj = osd_dt_obj(dt);
4008         struct lu_object       *lo  = &dt->do_lu;
4009         struct iam_path_descr  *ipd;
4010         struct iam_container   *bag = &obj->oo_dir->od_container;
4011
4012         LASSERT(lu_object_exists(lo));
4013
4014         if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
4015                 return ERR_PTR(-EACCES);
4016
4017         it = &oti->oti_it;
4018         ipd = osd_it_ipd_get(env, bag);
4019         if (likely(ipd != NULL)) {
4020                 it->oi_obj = obj;
4021                 it->oi_ipd = ipd;
4022                 lu_object_get(lo);
4023                 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
4024                 return (struct dt_it *)it;
4025         }
4026         return ERR_PTR(-ENOMEM);
4027 }
4028
4029 /**
4030  * free given Iterator.
4031  */
4032
4033 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
4034 {
4035         struct osd_it_iam *it = (struct osd_it_iam *)di;
4036         struct osd_object *obj = it->oi_obj;
4037
4038         iam_it_fini(&it->oi_it);
4039         osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
4040         lu_object_put(env, &obj->oo_dt.do_lu);
4041 }
4042
4043 /**
4044  *  Move Iterator to record specified by \a key
4045  *
4046  *  \param  di      osd iterator
4047  *  \param  key     key for index
4048  *
4049  *  \retval +ve  di points to record with least key not larger than key
4050  *  \retval  0   di points to exact matched key
4051  *  \retval -ve  failure
4052  */
4053
4054 static int osd_it_iam_get(const struct lu_env *env,
4055                           struct dt_it *di, const struct dt_key *key)
4056 {
4057         struct osd_thread_info  *oti = osd_oti_get(env);
4058         struct osd_it_iam       *it = (struct osd_it_iam *)di;
4059
4060         if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4061                 /* swab quota uid/gid */
4062                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
4063                 key = (struct dt_key *)&oti->oti_quota_id;
4064         }
4065
4066         return iam_it_get(&it->oi_it, (const struct iam_key *)key);
4067 }
4068
4069 /**
4070  *  Release Iterator
4071  *
4072  *  \param  di      osd iterator
4073  */
4074 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
4075 {
4076         struct osd_it_iam *it = (struct osd_it_iam *)di;
4077
4078         iam_it_put(&it->oi_it);
4079 }
4080
4081 /**
4082  *  Move iterator by one record
4083  *
4084  *  \param  di      osd iterator
4085  *
4086  *  \retval +1   end of container reached
4087  *  \retval  0   success
4088  *  \retval -ve  failure
4089  */
4090
4091 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
4092 {
4093         struct osd_it_iam *it = (struct osd_it_iam *)di;
4094
4095         return iam_it_next(&it->oi_it);
4096 }
4097
4098 /**
4099  * Return pointer to the key under iterator.
4100  */
4101
4102 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
4103                                  const struct dt_it *di)
4104 {
4105         struct osd_thread_info *oti = osd_oti_get(env);
4106         struct osd_it_iam      *it = (struct osd_it_iam *)di;
4107         struct osd_object      *obj = it->oi_obj;
4108         struct dt_key          *key;
4109
4110         key = (struct dt_key *)iam_it_key_get(&it->oi_it);
4111
4112         if (!IS_ERR(key) && fid_is_quota(lu_object_fid(&obj->oo_dt.do_lu))) {
4113                 /* swab quota uid/gid */
4114                 oti->oti_quota_id = le64_to_cpu(*((__u64 *)key));
4115                 key = (struct dt_key *)&oti->oti_quota_id;
4116         }
4117
4118         return key;
4119 }
4120
4121 /**
4122  * Return size of key under iterator (in bytes)
4123  */
4124
4125 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
4126 {
4127         struct osd_it_iam *it = (struct osd_it_iam *)di;
4128
4129         return iam_it_key_size(&it->oi_it);
4130 }
4131
4132 static inline void
4133 osd_it_append_attrs(struct lu_dirent *ent, int len, __u16 type)
4134 {
4135         /* check if file type is required */
4136         if (ent->lde_attrs & LUDA_TYPE) {
4137                 struct luda_type *lt;
4138                 int align = sizeof(*lt) - 1;
4139
4140                 len = (len + align) & ~align;
4141                 lt = (struct luda_type *)(ent->lde_name + len);
4142                 lt->lt_type = cpu_to_le16(DTTOIF(type));
4143         }
4144
4145         ent->lde_attrs = cpu_to_le32(ent->lde_attrs);
4146 }
4147
4148 /**
4149  * build lu direct from backend fs dirent.
4150  */
4151
4152 static inline void
4153 osd_it_pack_dirent(struct lu_dirent *ent, struct lu_fid *fid, __u64 offset,
4154                    char *name, __u16 namelen, __u16 type, __u32 attr)
4155 {
4156         ent->lde_attrs = attr | LUDA_FID;
4157         fid_cpu_to_le(&ent->lde_fid, fid);
4158
4159         ent->lde_hash = cpu_to_le64(offset);
4160         ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr));
4161
4162         strncpy(ent->lde_name, name, namelen);
4163         ent->lde_name[namelen] = '\0';
4164         ent->lde_namelen = cpu_to_le16(namelen);
4165
4166         /* append lustre attributes */
4167         osd_it_append_attrs(ent, namelen, type);
4168 }
4169
4170 /**
4171  * Return pointer to the record under iterator.
4172  */
4173 static int osd_it_iam_rec(const struct lu_env *env,
4174                           const struct dt_it *di,
4175                           struct dt_rec *dtrec, __u32 attr)
4176 {
4177         struct osd_it_iam      *it   = (struct osd_it_iam *)di;
4178         struct osd_thread_info *info = osd_oti_get(env);
4179         ENTRY;
4180
4181         if (S_ISDIR(it->oi_obj->oo_inode->i_mode)) {
4182                 const struct osd_fid_pack *rec;
4183                 struct lu_fid             *fid = &info->oti_fid;
4184                 struct lu_dirent          *lde = (struct lu_dirent *)dtrec;
4185                 char                      *name;
4186                 int                        namelen;
4187                 __u64                      hash;
4188                 int                        rc;
4189
4190                 name = (char *)iam_it_key_get(&it->oi_it);
4191                 if (IS_ERR(name))
4192                         RETURN(PTR_ERR(name));
4193
4194                 namelen = iam_it_key_size(&it->oi_it);
4195
4196                 rec = (const struct osd_fid_pack *)iam_it_rec_get(&it->oi_it);
4197                 if (IS_ERR(rec))
4198                         RETURN(PTR_ERR(rec));
4199
4200                 rc = osd_fid_unpack(fid, rec);
4201                 if (rc)
4202                         RETURN(rc);
4203
4204                 hash = iam_it_store(&it->oi_it);
4205
4206                 /* IAM does not store object type in IAM index (dir) */
4207                 osd_it_pack_dirent(lde, fid, hash, name, namelen,
4208                                    0, LUDA_FID);
4209         } else if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4210                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4211                            (struct iam_rec *)dtrec);
4212                 osd_quota_unpack(it->oi_obj, dtrec);
4213         } else {
4214                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4215                            (struct iam_rec *)dtrec);
4216         }
4217
4218         RETURN(0);
4219 }
4220
4221 /**
4222  * Returns cookie for current Iterator position.
4223  */
4224 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
4225 {
4226         struct osd_it_iam *it = (struct osd_it_iam *)di;
4227
4228         return iam_it_store(&it->oi_it);
4229 }
4230
4231 /**
4232  * Restore iterator from cookie.
4233  *
4234  * \param  di      osd iterator
4235  * \param  hash    Iterator location cookie
4236  *
4237  * \retval +ve  di points to record with least key not larger than key.
4238  * \retval  0   di points to exact matched key
4239  * \retval -ve  failure
4240  */
4241
4242 static int osd_it_iam_load(const struct lu_env *env,
4243                            const struct dt_it *di, __u64 hash)
4244 {
4245         struct osd_it_iam *it = (struct osd_it_iam *)di;
4246
4247         return iam_it_load(&it->oi_it, hash);
4248 }
4249
4250 static const struct dt_index_operations osd_index_iam_ops = {
4251         .dio_lookup         = osd_index_iam_lookup,
4252         .dio_declare_insert = osd_index_declare_iam_insert,
4253         .dio_insert         = osd_index_iam_insert,
4254         .dio_declare_delete = osd_index_declare_iam_delete,
4255         .dio_delete         = osd_index_iam_delete,
4256         .dio_it     = {
4257                 .init     = osd_it_iam_init,
4258                 .fini     = osd_it_iam_fini,
4259                 .get      = osd_it_iam_get,
4260                 .put      = osd_it_iam_put,
4261                 .next     = osd_it_iam_next,
4262                 .key      = osd_it_iam_key,
4263                 .key_size = osd_it_iam_key_size,
4264                 .rec      = osd_it_iam_rec,
4265                 .store    = osd_it_iam_store,
4266                 .load     = osd_it_iam_load
4267         }
4268 };
4269
4270
4271 /**
4272  * Creates or initializes iterator context.
4273  *
4274  * \retval struct osd_it_ea, iterator structure on success
4275  *
4276  */
4277 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
4278                                     struct dt_object *dt,
4279                                     __u32 attr,
4280                                     struct lustre_capa *capa)
4281 {
4282         struct osd_object       *obj  = osd_dt_obj(dt);
4283         struct osd_thread_info  *info = osd_oti_get(env);
4284         struct osd_it_ea        *it   = &info->oti_it_ea;
4285         struct lu_object        *lo   = &dt->do_lu;
4286         struct dentry           *obj_dentry = &info->oti_it_dentry;
4287         ENTRY;
4288         LASSERT(lu_object_exists(lo));
4289
4290         obj_dentry->d_inode = obj->oo_inode;
4291         obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
4292         obj_dentry->d_name.hash = 0;
4293
4294         it->oie_rd_dirent       = 0;
4295         it->oie_it_dirent       = 0;
4296         it->oie_dirent          = NULL;
4297         it->oie_buf             = info->oti_it_ea_buf;
4298         it->oie_obj             = obj;
4299         it->oie_file.f_pos      = 0;
4300         it->oie_file.f_dentry   = obj_dentry;
4301         if (attr & LUDA_64BITHASH)
4302                 it->oie_file.f_mode |= FMODE_64BITHASH;
4303         else
4304                 it->oie_file.f_mode |= FMODE_32BITHASH;
4305         it->oie_file.f_mapping    = obj->oo_inode->i_mapping;
4306         it->oie_file.f_op         = obj->oo_inode->i_fop;
4307         it->oie_file.private_data = NULL;
4308         lu_object_get(lo);
4309         RETURN((struct dt_it *) it);
4310 }
4311
4312 /**
4313  * Destroy or finishes iterator context.
4314  *
4315  * \param di iterator structure to be destroyed
4316  */
4317 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
4318 {
4319         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4320         struct osd_object    *obj  = it->oie_obj;
4321         struct inode       *inode  = obj->oo_inode;
4322
4323         ENTRY;
4324         it->oie_file.f_op->release(inode, &it->oie_file);
4325         lu_object_put(env, &obj->oo_dt.do_lu);
4326         EXIT;
4327 }
4328
4329 /**
4330  * It position the iterator at given key, so that next lookup continues from
4331  * that key Or it is similar to dio_it->load() but based on a key,
4332  * rather than file position.
4333  *
4334  * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
4335  * to the beginning.
4336  *
4337  * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
4338  */
4339 static int osd_it_ea_get(const struct lu_env *env,
4340                          struct dt_it *di, const struct dt_key *key)
4341 {
4342         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4343
4344         ENTRY;
4345         LASSERT(((const char *)key)[0] == '\0');
4346         it->oie_file.f_pos      = 0;
4347         it->oie_rd_dirent       = 0;
4348         it->oie_it_dirent       = 0;
4349         it->oie_dirent          = NULL;
4350
4351         RETURN(+1);
4352 }
4353
4354 /**
4355  * Does nothing
4356  */
4357 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
4358 {
4359 }
4360
4361 /**
4362  * It is called internally by ->readdir(). It fills the
4363  * iterator's in-memory data structure with required
4364  * information i.e. name, namelen, rec_size etc.
4365  *
4366  * \param buf in which information to be filled in.
4367  * \param name name of the file in given dir
4368  *
4369  * \retval 0 on success
4370  * \retval 1 on buffer full
4371  */
4372 static int osd_ldiskfs_filldir(char *buf, const char *name, int namelen,
4373                                loff_t offset, __u64 ino,
4374                                unsigned d_type)
4375 {
4376         struct osd_it_ea        *it   = (struct osd_it_ea *)buf;
4377         struct osd_object       *obj  = it->oie_obj;
4378         struct osd_it_ea_dirent *ent  = it->oie_dirent;
4379         struct lu_fid           *fid  = &ent->oied_fid;
4380         struct osd_fid_pack     *rec;
4381         ENTRY;
4382
4383         /* this should never happen */
4384         if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) {
4385                 CERROR("ldiskfs return invalid namelen %d\n", namelen);
4386                 RETURN(-EIO);
4387         }
4388
4389         if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen >
4390             OSD_IT_EA_BUFSIZE)
4391                 RETURN(1);
4392
4393         /* "." is just the object itself. */
4394         if (namelen == 1 && name[0] == '.') {
4395                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4396         } else if (d_type & LDISKFS_DIRENT_LUFID) {
4397                 rec = (struct osd_fid_pack*) (name + namelen + 1);
4398                 if (osd_fid_unpack(fid, rec) != 0)
4399                         fid_zero(fid);
4400         } else {
4401                 fid_zero(fid);
4402         }
4403         d_type &= ~LDISKFS_DIRENT_LUFID;
4404
4405         /* NOT export local root. */
4406         if (unlikely(osd_sb(osd_obj2dev(obj))->s_root->d_inode->i_ino == ino)) {
4407                 ino = obj->oo_inode->i_ino;
4408                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4409         }
4410
4411         ent->oied_ino     = ino;
4412         ent->oied_off     = offset;
4413         ent->oied_namelen = namelen;
4414         ent->oied_type    = d_type;
4415
4416         memcpy(ent->oied_name, name, namelen);
4417
4418         it->oie_rd_dirent++;
4419         it->oie_dirent = (void *) ent + cfs_size_round(sizeof(*ent) + namelen);
4420         RETURN(0);
4421 }
4422
4423 /**
4424  * Calls ->readdir() to load a directory entry at a time
4425  * and stored it in iterator's in-memory data structure.
4426  *
4427  * \param di iterator's in memory structure
4428  *
4429  * \retval   0 on success
4430  * \retval -ve on error
4431  */
4432 static int osd_ldiskfs_it_fill(const struct lu_env *env,
4433                                const struct dt_it *di)
4434 {
4435         struct osd_it_ea   *it    = (struct osd_it_ea *)di;
4436         struct osd_object  *obj   = it->oie_obj;
4437         struct inode       *inode = obj->oo_inode;
4438         struct htree_lock  *hlock = NULL;
4439         int                 result = 0;
4440
4441         ENTRY;
4442         it->oie_dirent = it->oie_buf;
4443         it->oie_rd_dirent = 0;
4444
4445         if (obj->oo_hl_head != NULL) {
4446                 hlock = osd_oti_get(env)->oti_hlock;
4447                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4448                                    inode, LDISKFS_HLOCK_READDIR);
4449         } else {
4450                 down_read(&obj->oo_ext_idx_sem);
4451         }
4452
4453         result = inode->i_fop->readdir(&it->oie_file, it,
4454                                        (filldir_t) osd_ldiskfs_filldir);
4455
4456         if (hlock != NULL)
4457                 ldiskfs_htree_unlock(hlock);
4458         else
4459                 up_read(&obj->oo_ext_idx_sem);
4460
4461         if (it->oie_rd_dirent == 0) {
4462                 result = -EIO;
4463         } else {
4464                 it->oie_dirent = it->oie_buf;
4465                 it->oie_it_dirent = 1;
4466         }
4467
4468         RETURN(result);
4469 }
4470
4471 /**
4472  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4473  * to load a directory entry at a time and stored it in
4474  * iterator's in-memory data structure.
4475  *
4476  * \param di iterator's in memory structure
4477  *
4478  * \retval +ve iterator reached to end
4479  * \retval   0 iterator not reached to end
4480  * \retval -ve on error
4481  */
4482 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
4483 {
4484         struct osd_it_ea *it = (struct osd_it_ea *)di;
4485         int rc;
4486
4487         ENTRY;
4488
4489         if (it->oie_it_dirent < it->oie_rd_dirent) {
4490                 it->oie_dirent =
4491                         (void *) it->oie_dirent +
4492                         cfs_size_round(sizeof(struct osd_it_ea_dirent) +
4493                                        it->oie_dirent->oied_namelen);
4494                 it->oie_it_dirent++;
4495                 RETURN(0);
4496         } else {
4497                 if (it->oie_file.f_pos == ldiskfs_get_htree_eof(&it->oie_file))
4498                         rc = +1;
4499                 else
4500                         rc = osd_ldiskfs_it_fill(env, di);
4501         }
4502
4503         RETURN(rc);
4504 }
4505
4506 /**
4507  * Returns the key at current position from iterator's in memory structure.
4508  *
4509  * \param di iterator's in memory structure
4510  *
4511  * \retval key i.e. struct dt_key on success
4512  */
4513 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
4514                                     const struct dt_it *di)
4515 {
4516         struct osd_it_ea *it = (struct osd_it_ea *)di;
4517
4518         return (struct dt_key *)it->oie_dirent->oied_name;
4519 }
4520
4521 /**
4522  * Returns the key's size at current position from iterator's in memory structure.
4523  *
4524  * \param di iterator's in memory structure
4525  *
4526  * \retval key_size i.e. struct dt_key on success
4527  */
4528 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
4529 {
4530         struct osd_it_ea *it = (struct osd_it_ea *)di;
4531
4532         return it->oie_dirent->oied_namelen;
4533 }
4534
4535 static int
4536 osd_dirent_update(handle_t *jh, struct super_block *sb,
4537                   struct osd_it_ea_dirent *ent, struct lu_fid *fid,
4538                   struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de)
4539 {
4540         struct osd_fid_pack *rec;
4541         int                  rc;
4542         ENTRY;
4543
4544         LASSERT(de->file_type & LDISKFS_DIRENT_LUFID);
4545         LASSERT(de->rec_len >= de->name_len + sizeof(struct osd_fid_pack));
4546
4547         rc = ldiskfs_journal_get_write_access(jh, bh);
4548         if (rc != 0) {
4549                 CERROR("%.16s: fail to write access for update dirent: "
4550                        "name = %.*s, rc = %d\n",
4551                        LDISKFS_SB(sb)->s_es->s_volume_name,
4552                        ent->oied_namelen, ent->oied_name, rc);
4553                 RETURN(rc);
4554         }
4555
4556         rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
4557         fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
4558         rc = ldiskfs_journal_dirty_metadata(jh, bh);
4559         if (rc != 0)
4560                 CERROR("%.16s: fail to dirty metadata for update dirent: "
4561                        "name = %.*s, rc = %d\n",
4562                        LDISKFS_SB(sb)->s_es->s_volume_name,
4563                        ent->oied_namelen, ent->oied_name, rc);
4564
4565         RETURN(rc);
4566 }
4567
4568 static inline int
4569 osd_dirent_has_space(__u16 reclen, __u16 namelen, unsigned blocksize)
4570 {
4571         if (ldiskfs_rec_len_from_disk(reclen, blocksize) >=
4572             __LDISKFS_DIR_REC_LEN(namelen + 1 + sizeof(struct osd_fid_pack)))
4573                 return 1;
4574         else
4575                 return 0;
4576 }
4577
4578 static inline int
4579 osd_dot_dotdot_has_space(struct ldiskfs_dir_entry_2 *de, int dot_dotdot)
4580 {
4581         LASSERTF(dot_dotdot == 1 || dot_dotdot == 2,
4582                  "dot_dotdot = %d\n", dot_dotdot);
4583
4584         if (LDISKFS_DIR_REC_LEN(de) >=
4585             __LDISKFS_DIR_REC_LEN(dot_dotdot + 1 + sizeof(struct osd_fid_pack)))
4586                 return 1;
4587         else
4588                 return 0;
4589 }
4590
4591 static int
4592 osd_dirent_reinsert(const struct lu_env *env, handle_t *jh,
4593                     struct inode *dir, struct inode *inode,
4594                     struct osd_it_ea_dirent *ent, struct lu_fid *fid,
4595                     struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de,
4596                     struct htree_lock *hlock)
4597 {
4598         struct dentry               *dentry;
4599         struct osd_fid_pack         *rec;
4600         struct ldiskfs_dentry_param *ldp;
4601         int                          rc;
4602         ENTRY;
4603
4604         if (!LDISKFS_HAS_INCOMPAT_FEATURE(inode->i_sb,
4605                                           LDISKFS_FEATURE_INCOMPAT_DIRDATA))
4606                 RETURN(0);
4607
4608         /* There is enough space to hold the FID-in-dirent. */
4609         if (osd_dirent_has_space(de->rec_len, ent->oied_namelen,
4610                                  dir->i_sb->s_blocksize)) {
4611                 rc = ldiskfs_journal_get_write_access(jh, bh);
4612                 if (rc != 0) {
4613                         CERROR("%.16s: fail to write access for reinsert "
4614                                "dirent: name = %.*s, rc = %d\n",
4615                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
4616                                ent->oied_namelen, ent->oied_name, rc);
4617                         RETURN(rc);
4618                 }
4619
4620                 de->name[de->name_len] = 0;
4621                 rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
4622                 rec->fp_len = sizeof(struct lu_fid) + 1;
4623                 fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
4624                 de->file_type |= LDISKFS_DIRENT_LUFID;
4625
4626                 rc = ldiskfs_journal_dirty_metadata(jh, bh);
4627                 if (rc != 0)
4628                         CERROR("%.16s: fail to dirty metadata for reinsert "
4629                                "dirent: name = %.*s, rc = %d\n",
4630                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
4631                                ent->oied_namelen, ent->oied_name, rc);
4632
4633                 RETURN(rc);
4634         }
4635
4636         rc = ldiskfs_delete_entry(jh, dir, de, bh);
4637         if (rc != 0) {
4638                 CERROR("%.16s: fail to delete entry for reinsert dirent: "
4639                        "name = %.*s, rc = %d\n",
4640                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
4641                        ent->oied_namelen, ent->oied_name, rc);
4642                 RETURN(rc);
4643         }
4644
4645         dentry = osd_child_dentry_by_inode(env, dir, ent->oied_name,
4646                                            ent->oied_namelen);
4647         ldp = (struct ldiskfs_dentry_param *)osd_oti_get(env)->oti_ldp;
4648         osd_get_ldiskfs_dirent_param(ldp, (const struct dt_rec *)fid);
4649         dentry->d_fsdata = (void *)ldp;
4650         ll_vfs_dq_init(dir);
4651         rc = osd_ldiskfs_add_entry(jh, dentry, inode, hlock);
4652         /* It is too bad, we cannot reinsert the name entry back.
4653          * That means we lose it! */
4654         if (rc != 0)
4655                 CERROR("%.16s: fail to insert entry for reinsert dirent: "
4656                        "name = %.*s, rc = %d\n",
4657                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
4658                        ent->oied_namelen, ent->oied_name, rc);
4659
4660         RETURN(rc);
4661 }
4662
4663 static int
4664 osd_dirent_check_repair(const struct lu_env *env, struct osd_object *obj,
4665                         struct osd_it_ea *it, struct lu_fid *fid,
4666                         struct osd_inode_id *id, __u32 *attr)
4667 {
4668         struct osd_thread_info     *info        = osd_oti_get(env);
4669         struct lustre_mdt_attrs    *lma         = &info->oti_mdt_attrs;
4670         struct osd_device          *dev         = osd_obj2dev(obj);
4671         struct super_block         *sb          = osd_sb(dev);
4672         const char                 *devname     =
4673                                         LDISKFS_SB(sb)->s_es->s_volume_name;
4674         struct osd_it_ea_dirent    *ent         = it->oie_dirent;
4675         struct inode               *dir         = obj->oo_inode;
4676         struct htree_lock          *hlock       = NULL;
4677         struct buffer_head         *bh          = NULL;
4678         handle_t                   *jh          = NULL;
4679         struct ldiskfs_dir_entry_2 *de;
4680         struct dentry              *dentry;
4681         struct inode               *inode;
4682         int                         credits;
4683         int                         rc;
4684         int                         dot_dotdot  = 0;
4685         bool                        dirty       = false;
4686         ENTRY;
4687
4688         if (ent->oied_name[0] == '.') {
4689                 if (ent->oied_namelen == 1)
4690                         dot_dotdot = 1;
4691                 else if (ent->oied_namelen == 2 && ent->oied_name[1] == '.')
4692                         dot_dotdot = 2;
4693         }
4694
4695         dentry = osd_child_dentry_get(env, obj, ent->oied_name,
4696                                       ent->oied_namelen);
4697
4698         /* We need to ensure that the name entry is still valid.
4699          * Because it may be removed or renamed by other already.
4700          *
4701          * The unlink or rename operation will start journal before PDO lock,
4702          * so to avoid deadlock, here we need to start journal handle before
4703          * related PDO lock also. But because we do not know whether there
4704          * will be something to be repaired before PDO lock, we just start
4705          * journal without conditions.
4706          *
4707          * We may need to remove the name entry firstly, then insert back.
4708          * One credit is for user quota file update.
4709          * One credit is for group quota file update.
4710          * Two credits are for dirty inode. */
4711         credits = osd_dto_credits_noquota[DTO_INDEX_DELETE] +
4712                   osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1 + 1 + 2;
4713
4714 again:
4715         if (dev->od_dirent_journal) {
4716                 jh = ldiskfs_journal_start_sb(sb, credits);
4717                 if (IS_ERR(jh)) {
4718                         rc = PTR_ERR(jh);
4719                         CERROR("%.16s: fail to start trans for dirent "
4720                                "check_repair: credits %d, name %.*s, rc %d\n",
4721                                devname, credits, ent->oied_namelen,
4722                                ent->oied_name, rc);
4723                         RETURN(rc);
4724                 }
4725
4726                 if (obj->oo_hl_head != NULL) {
4727                         hlock = osd_oti_get(env)->oti_hlock;
4728                         /* "0" means exclusive lock for the whole directory.
4729                          * We need to prevent others access such name entry
4730                          * during the delete + insert. Neither HLOCK_ADD nor
4731                          * HLOCK_DEL cannot guarantee the atomicity. */
4732                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir, 0);
4733                 } else {
4734                         down_write(&obj->oo_ext_idx_sem);
4735                 }
4736         } else {
4737                 if (obj->oo_hl_head != NULL) {
4738                         hlock = osd_oti_get(env)->oti_hlock;
4739                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir,
4740                                            LDISKFS_HLOCK_LOOKUP);
4741                 } else {
4742                         down_read(&obj->oo_ext_idx_sem);
4743                 }
4744         }
4745
4746         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
4747         /* For dot/dotdot entry, if there is not enough space to hold the
4748          * FID-in-dirent, just keep them there. It only happens when the
4749          * device upgraded from 1.8 or restored from MDT file-level backup.
4750          * For the whole directory, only dot/dotdot entry have no FID-in-dirent
4751          * and needs to get FID from LMA when readdir, it will not affect the
4752          * performance much. */
4753         if ((bh == NULL) || (le32_to_cpu(de->inode) != ent->oied_ino) ||
4754             (dot_dotdot != 0 && !osd_dot_dotdot_has_space(de, dot_dotdot))) {
4755                 *attr |= LUDA_IGNORE;
4756                 GOTO(out_journal, rc = 0);
4757         }
4758
4759         osd_id_gen(id, ent->oied_ino, OSD_OII_NOGEN);
4760         inode = osd_iget(info, dev, id);
4761         if (IS_ERR(inode)) {
4762                 rc = PTR_ERR(inode);
4763                 if (rc == -ENOENT || rc == -ESTALE) {
4764                         *attr |= LUDA_IGNORE;
4765                         rc = 0;
4766                 }
4767
4768                 GOTO(out_journal, rc);
4769         }
4770
4771         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
4772         if (rc == 0) {
4773                 if (fid_is_sane(fid)) {
4774                         /* FID-in-dirent is valid. */
4775                         if (lu_fid_eq(fid, &lma->lma_self_fid))
4776                                 GOTO(out_inode, rc = 0);
4777
4778                         /* Do not repair under dryrun mode. */
4779                         if (*attr & LUDA_VERIFY_DRYRUN) {
4780                                 *attr |= LUDA_REPAIR;
4781                                 GOTO(out_inode, rc = 0);
4782                         }
4783
4784                         if (!dev->od_dirent_journal) {
4785                                 iput(inode);
4786                                 brelse(bh);
4787                                 if (hlock != NULL)
4788                                         ldiskfs_htree_unlock(hlock);
4789                                 else
4790                                         up_read(&obj->oo_ext_idx_sem);
4791                                 dev->od_dirent_journal = 1;
4792                                 goto again;
4793                         }
4794
4795                         *fid = lma->lma_self_fid;
4796                         dirty = true;
4797                         /* Update the FID-in-dirent. */
4798                         rc = osd_dirent_update(jh, sb, ent, fid, bh, de);
4799                         if (rc == 0)
4800                                 *attr |= LUDA_REPAIR;
4801                 } else {
4802                         /* Do not repair under dryrun mode. */
4803                         if (*attr & LUDA_VERIFY_DRYRUN) {
4804                                 *fid = lma->lma_self_fid;
4805                                 *attr |= LUDA_REPAIR;
4806                                 GOTO(out_inode, rc = 0);
4807                         }
4808
4809                         if (!dev->od_dirent_journal) {
4810                                 iput(inode);
4811                                 brelse(bh);
4812                                 if (hlock != NULL)
4813                                         ldiskfs_htree_unlock(hlock);
4814                                 else
4815                                         up_read(&obj->oo_ext_idx_sem);
4816                                 dev->od_dirent_journal = 1;
4817                                 goto again;
4818                         }
4819
4820                         *fid = lma->lma_self_fid;
4821                         dirty = true;
4822                         /* Append the FID-in-dirent. */
4823                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
4824                                                  fid, bh, de, hlock);
4825                         if (rc == 0)
4826                                 *attr |= LUDA_REPAIR;
4827                 }
4828         } else if (rc == -ENODATA) {
4829                 /* Do not repair under dryrun mode. */
4830                 if (*attr & LUDA_VERIFY_DRYRUN) {
4831                         if (fid_is_sane(fid)) {
4832                                 *attr |= LUDA_REPAIR;
4833                         } else {
4834                                 lu_igif_build(fid, inode->i_ino,
4835                                               inode->i_generation);
4836                                 *attr |= LUDA_UPGRADE;
4837                         }
4838                         GOTO(out_inode, rc = 0);
4839                 }
4840
4841                 if (!dev->od_dirent_journal) {
4842                         iput(inode);
4843                         brelse(bh);
4844                         if (hlock != NULL)
4845                                 ldiskfs_htree_unlock(hlock);
4846                         else
4847                                 up_read(&obj->oo_ext_idx_sem);
4848                         dev->od_dirent_journal = 1;
4849                         goto again;
4850                 }
4851
4852                 dirty = true;
4853                 if (unlikely(fid_is_sane(fid))) {
4854                         /* FID-in-dirent exists, but FID-in-LMA is lost.
4855                          * Trust the FID-in-dirent, and add FID-in-LMA. */
4856                         rc = osd_ea_fid_set(info, inode, fid, 0);
4857                         if (rc == 0)
4858                                 *attr |= LUDA_REPAIR;
4859                 } else {
4860                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
4861                         /* It is probably IGIF object. Only aappend the
4862                          * FID-in-dirent. OI scrub will process FID-in-LMA. */
4863                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
4864                                                  fid, bh, de, hlock);
4865                         if (rc == 0)
4866                                 *attr |= LUDA_UPGRADE;
4867                 }
4868         }
4869
4870         GOTO(out_inode, rc);
4871
4872 out_inode:
4873         iput(inode);
4874
4875 out_journal:
4876         brelse(bh);
4877         if (hlock != NULL) {
4878                 ldiskfs_htree_unlock(hlock);
4879         } else {
4880                 if (dev->od_dirent_journal)
4881                         up_write(&obj->oo_ext_idx_sem);
4882                 else
4883                         up_read(&obj->oo_ext_idx_sem);
4884         }
4885         if (jh != NULL)
4886                 ldiskfs_journal_stop(jh);
4887         if (rc >= 0 && !dirty)
4888                 dev->od_dirent_journal = 0;
4889         return rc;
4890 }
4891
4892 /**
4893  * Returns the value at current position from iterator's in memory structure.
4894  *
4895  * \param di struct osd_it_ea, iterator's in memory structure
4896  * \param attr attr requested for dirent.
4897  * \param lde lustre dirent
4898  *
4899  * \retval   0 no error and \param lde has correct lustre dirent.
4900  * \retval -ve on error
4901  */
4902 static inline int osd_it_ea_rec(const struct lu_env *env,
4903                                 const struct dt_it *di,
4904                                 struct dt_rec *dtrec, __u32 attr)
4905 {
4906         struct osd_it_ea       *it    = (struct osd_it_ea *)di;
4907         struct osd_object      *obj   = it->oie_obj;
4908         struct osd_device      *dev   = osd_obj2dev(obj);
4909         struct osd_scrub       *scrub = &dev->od_scrub;
4910         struct scrub_file      *sf    = &scrub->os_file;
4911         struct osd_thread_info *oti   = osd_oti_get(env);
4912         struct osd_inode_id    *id    = &oti->oti_id;
4913         struct osd_idmap_cache *oic   = &oti->oti_cache;
4914         struct lu_fid          *fid   = &it->oie_dirent->oied_fid;
4915         struct lu_dirent       *lde   = (struct lu_dirent *)dtrec;
4916         __u32                   ino   = it->oie_dirent->oied_ino;
4917         int                     rc    = 0;
4918         ENTRY;
4919
4920         if (attr & LUDA_VERIFY) {
4921                 attr |= LUDA_TYPE;
4922                 if (unlikely(ino == osd_sb(dev)->s_root->d_inode->i_ino)) {
4923                         attr |= LUDA_IGNORE;
4924                         rc = 0;
4925                         goto pack;
4926                 }
4927
4928                 rc = osd_dirent_check_repair(env, obj, it, fid, id, &attr);
4929         } else {
4930                 attr &= ~LU_DIRENT_ATTRS_MASK;
4931                 if (!fid_is_sane(fid)) {
4932                         if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP))
4933                                 RETURN(-ENOENT);
4934
4935                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
4936                 } else {
4937                         osd_id_gen(id, ino, OSD_OII_NOGEN);
4938                 }
4939         }
4940
4941         if (rc < 0)
4942                 RETURN(rc);
4943
4944 pack:
4945         osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off,
4946                            it->oie_dirent->oied_name,
4947                            it->oie_dirent->oied_namelen,
4948                            it->oie_dirent->oied_type, attr);
4949
4950         if (osd_remote_fid(env, dev, fid))
4951                 RETURN(0);
4952
4953         if (likely(!(attr & LUDA_IGNORE))) {
4954                 oic->oic_lid = *id;
4955                 oic->oic_fid = *fid;
4956         }
4957
4958         if (!(attr & LUDA_VERIFY) &&
4959             (scrub->os_pos_current <= ino) &&
4960             ((sf->sf_flags & SF_INCONSISTENT) ||
4961              (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
4962              ldiskfs_test_bit(osd_oi_fid2idx(dev, fid), sf->sf_oi_bitmap)))
4963                 osd_consistency_check(oti, dev, oic);
4964
4965         RETURN(rc);
4966 }
4967
4968 /**
4969  * Returns a cookie for current position of the iterator head, so that
4970  * user can use this cookie to load/start the iterator next time.
4971  *
4972  * \param di iterator's in memory structure
4973  *
4974  * \retval cookie for current position, on success
4975  */
4976 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
4977 {
4978         struct osd_it_ea *it = (struct osd_it_ea *)di;
4979
4980         return it->oie_dirent->oied_off;
4981 }
4982
4983 /**
4984  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4985  * to load a directory entry at a time and stored it i inn,
4986  * in iterator's in-memory data structure.
4987  *
4988  * \param di struct osd_it_ea, iterator's in memory structure
4989  *
4990  * \retval +ve on success
4991  * \retval -ve on error
4992  */
4993 static int osd_it_ea_load(const struct lu_env *env,
4994                           const struct dt_it *di, __u64 hash)
4995 {
4996         struct osd_it_ea *it = (struct osd_it_ea *)di;
4997         int rc;
4998
4999         ENTRY;
5000         it->oie_file.f_pos = hash;
5001
5002         rc =  osd_ldiskfs_it_fill(env, di);
5003         if (rc == 0)
5004                 rc = +1;
5005
5006         RETURN(rc);
5007 }
5008
5009 /**
5010  * Index lookup function for interoperability mode (b11826).
5011  *
5012  * \param key,  key i.e. file name to be searched
5013  *
5014  * \retval +ve, on success
5015  * \retval -ve, on error
5016  */
5017 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
5018                                struct dt_rec *rec, const struct dt_key *key,
5019                                struct lustre_capa *capa)
5020 {
5021         struct osd_object *obj = osd_dt_obj(dt);
5022         int rc = 0;
5023
5024         ENTRY;
5025
5026         LASSERT(S_ISDIR(obj->oo_inode->i_mode));
5027         LINVRNT(osd_invariant(obj));
5028
5029         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
5030                 return -EACCES;
5031
5032         rc = osd_ea_lookup_rec(env, obj, rec, key);
5033         if (rc == 0)
5034                 rc = +1;
5035         RETURN(rc);
5036 }
5037
5038 /**
5039  * Index and Iterator operations for interoperability
5040  * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
5041  */
5042 static const struct dt_index_operations osd_index_ea_ops = {
5043         .dio_lookup         = osd_index_ea_lookup,
5044         .dio_declare_insert = osd_index_declare_ea_insert,
5045         .dio_insert         = osd_index_ea_insert,
5046         .dio_declare_delete = osd_index_declare_ea_delete,
5047         .dio_delete         = osd_index_ea_delete,
5048         .dio_it     = {
5049                 .init     = osd_it_ea_init,
5050                 .fini     = osd_it_ea_fini,
5051                 .get      = osd_it_ea_get,
5052                 .put      = osd_it_ea_put,
5053                 .next     = osd_it_ea_next,
5054                 .key      = osd_it_ea_key,
5055                 .key_size = osd_it_ea_key_size,
5056                 .rec      = osd_it_ea_rec,
5057                 .store    = osd_it_ea_store,
5058                 .load     = osd_it_ea_load
5059         }
5060 };
5061
5062 static void *osd_key_init(const struct lu_context *ctx,
5063                           struct lu_context_key *key)
5064 {
5065         struct osd_thread_info *info;
5066
5067         OBD_ALLOC_PTR(info);
5068         if (info == NULL)
5069                 return ERR_PTR(-ENOMEM);
5070
5071         OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5072         if (info->oti_it_ea_buf == NULL)
5073                 goto out_free_info;
5074
5075         info->oti_env = container_of(ctx, struct lu_env, le_ctx);
5076
5077         info->oti_hlock = ldiskfs_htree_lock_alloc();
5078         if (info->oti_hlock == NULL)
5079                 goto out_free_ea;
5080
5081         return info;
5082
5083  out_free_ea:
5084         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5085  out_free_info:
5086         OBD_FREE_PTR(info);
5087         return ERR_PTR(-ENOMEM);
5088 }
5089
5090 static void osd_key_fini(const struct lu_context *ctx,
5091                          struct lu_context_key *key, void* data)
5092 {
5093         struct osd_thread_info *info = data;
5094
5095         if (info->oti_hlock != NULL)
5096                 ldiskfs_htree_lock_free(info->oti_hlock);
5097         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5098         lu_buf_free(&info->oti_iobuf.dr_pg_buf);
5099         lu_buf_free(&info->oti_iobuf.dr_bl_buf);
5100         OBD_FREE_PTR(info);
5101 }
5102
5103 static void osd_key_exit(const struct lu_context *ctx,
5104                          struct lu_context_key *key, void *data)
5105 {
5106         struct osd_thread_info *info = data;
5107
5108         LASSERT(info->oti_r_locks == 0);
5109         LASSERT(info->oti_w_locks == 0);
5110         LASSERT(info->oti_txns    == 0);
5111 }
5112
5113 /* type constructor/destructor: osd_type_init, osd_type_fini */
5114 LU_TYPE_INIT_FINI(osd, &osd_key);
5115
5116 struct lu_context_key osd_key = {
5117         .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
5118         .lct_init = osd_key_init,
5119         .lct_fini = osd_key_fini,
5120         .lct_exit = osd_key_exit
5121 };
5122
5123
5124 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
5125                            const char *name, struct lu_device *next)
5126 {
5127         struct osd_device *osd = osd_dev(d);
5128
5129         if (strlcpy(osd->od_svname, name, sizeof(osd->od_svname))
5130             >= sizeof(osd->od_svname))
5131                 return -E2BIG;
5132         return osd_procfs_init(osd, name);
5133 }
5134
5135 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
5136 {
5137         ENTRY;
5138
5139         osd_scrub_cleanup(env, o);
5140
5141         if (o->od_fsops) {
5142                 fsfilt_put_ops(o->od_fsops);
5143                 o->od_fsops = NULL;
5144         }
5145
5146         /* shutdown quota slave instance associated with the device */
5147         if (o->od_quota_slave != NULL) {
5148                 qsd_fini(env, o->od_quota_slave);
5149                 o->od_quota_slave = NULL;
5150         }
5151
5152         RETURN(0);
5153 }
5154
5155 static int osd_mount(const struct lu_env *env,
5156                      struct osd_device *o, struct lustre_cfg *cfg)
5157 {
5158         const char              *name  = lustre_cfg_string(cfg, 0);
5159         const char              *dev  = lustre_cfg_string(cfg, 1);
5160         const char              *opts;
5161         unsigned long            page, s_flags, lmd_flags = 0;
5162         struct page             *__page;
5163         struct file_system_type *type;
5164         char                    *options = NULL;
5165         char                    *str;
5166         int                       rc = 0;
5167         ENTRY;
5168
5169         if (o->od_mnt != NULL)
5170                 RETURN(0);
5171
5172         if (strlen(dev) >= sizeof(o->od_mntdev))
5173                 RETURN(-E2BIG);
5174         strcpy(o->od_mntdev, dev);
5175
5176         o->od_fsops = fsfilt_get_ops(mt_str(LDD_MT_LDISKFS));
5177         if (o->od_fsops == NULL) {
5178                 CERROR("Can't find fsfilt_ldiskfs\n");
5179                 RETURN(-ENOTSUPP);
5180         }
5181
5182         OBD_PAGE_ALLOC(__page, CFS_ALLOC_STD);
5183         if (__page == NULL)
5184                 GOTO(out, rc = -ENOMEM);
5185
5186         str = lustre_cfg_string(cfg, 2);
5187         s_flags = simple_strtoul(str, NULL, 0);
5188         str = strstr(str, ":");
5189         if (str)
5190                 lmd_flags = simple_strtoul(str + 1, NULL, 0);
5191         opts = lustre_cfg_string(cfg, 3);
5192         page = (unsigned long)cfs_page_address(__page);
5193         options = (char *)page;
5194         *options = '\0';
5195         if (opts == NULL)
5196                 strcat(options, "user_xattr,acl");
5197         else
5198                 strcat(options, opts);
5199
5200         /* Glom up mount options */
5201         if (*options != '\0')
5202                 strcat(options, ",");
5203         strlcat(options, "no_mbcache", CFS_PAGE_SIZE);
5204
5205         type = get_fs_type("ldiskfs");
5206         if (!type) {
5207                 CERROR("%s: cannot find ldiskfs module\n", name);
5208                 GOTO(out, rc = -ENODEV);
5209         }
5210
5211         o->od_mnt = vfs_kern_mount(type, s_flags, dev, options);
5212         cfs_module_put(type->owner);
5213
5214         if (IS_ERR(o->od_mnt)) {
5215                 rc = PTR_ERR(o->od_mnt);
5216                 CERROR("%s: can't mount %s: %d\n", name, dev, rc);
5217                 o->od_mnt = NULL;
5218                 GOTO(out, rc);
5219         }
5220
5221 #ifdef HAVE_DEV_SET_RDONLY
5222         if (dev_check_rdonly(o->od_mnt->mnt_sb->s_bdev)) {
5223                 CERROR("%s: underlying device %s is marked as read-only. "
5224                        "Setup failed\n", name, dev);
5225                 mntput(o->od_mnt);
5226                 o->od_mnt = NULL;
5227                 GOTO(out, rc = -EROFS);
5228         }
5229 #endif
5230
5231         if (!LDISKFS_HAS_COMPAT_FEATURE(o->od_mnt->mnt_sb,
5232             LDISKFS_FEATURE_COMPAT_HAS_JOURNAL)) {
5233                 CERROR("%s: device %s is mounted w/o journal\n", name, dev);
5234                 mntput(o->od_mnt);
5235                 o->od_mnt = NULL;
5236                 GOTO(out, rc = -EINVAL);
5237         }
5238
5239         ldiskfs_set_inode_state(osd_sb(o)->s_root->d_inode,
5240                                 LDISKFS_STATE_LUSTRE_NO_OI);
5241         if (lmd_flags & LMD_FLG_NOSCRUB)
5242                 o->od_noscrub = 1;
5243
5244 out:
5245         if (__page)
5246                 OBD_PAGE_FREE(__page);
5247         if (rc)
5248                 fsfilt_put_ops(o->od_fsops);
5249
5250         RETURN(rc);
5251 }
5252
5253 static struct lu_device *osd_device_fini(const struct lu_env *env,
5254                                          struct lu_device *d)
5255 {
5256         int rc;
5257         ENTRY;
5258
5259         rc = osd_shutdown(env, osd_dev(d));
5260
5261         osd_obj_map_fini(osd_dev(d));
5262
5263         shrink_dcache_sb(osd_sb(osd_dev(d)));
5264         osd_sync(env, lu2dt_dev(d));
5265
5266         rc = osd_procfs_fini(osd_dev(d));
5267         if (rc) {
5268                 CERROR("proc fini error %d \n", rc);
5269                 RETURN (ERR_PTR(rc));
5270         }
5271
5272         if (osd_dev(d)->od_mnt) {
5273                 mntput(osd_dev(d)->od_mnt);
5274                 osd_dev(d)->od_mnt = NULL;
5275         }
5276
5277         RETURN(NULL);
5278 }
5279
5280 static int osd_device_init0(const struct lu_env *env,
5281                             struct osd_device *o,
5282                             struct lustre_cfg *cfg)
5283 {
5284         struct lu_device        *l = osd2lu_dev(o);
5285         struct osd_thread_info *info;
5286         int                     rc;
5287         int                     cplen = 0;
5288
5289         /* if the module was re-loaded, env can loose its keys */
5290         rc = lu_env_refill((struct lu_env *) env);
5291         if (rc)
5292                 GOTO(out, rc);
5293         info = osd_oti_get(env);
5294         LASSERT(info);
5295
5296         l->ld_ops = &osd_lu_ops;
5297         o->od_dt_dev.dd_ops = &osd_dt_ops;
5298
5299         spin_lock_init(&o->od_osfs_lock);
5300         mutex_init(&o->od_otable_mutex);
5301         o->od_osfs_age = cfs_time_shift_64(-1000);
5302
5303         o->od_capa_hash = init_capa_hash();
5304         if (o->od_capa_hash == NULL)
5305                 GOTO(out, rc = -ENOMEM);
5306
5307         o->od_read_cache = 1;
5308         o->od_writethrough_cache = 1;
5309         o->od_readcache_max_filesize = OSD_MAX_CACHE_SIZE;
5310
5311         rc = osd_mount(env, o, cfg);
5312         if (rc)
5313                 GOTO(out_capa, rc);
5314
5315         CFS_INIT_LIST_HEAD(&o->od_ios_list);
5316         /* setup scrub, including OI files initialization */
5317         rc = osd_scrub_setup(env, o);
5318         if (rc < 0)
5319                 GOTO(out_mnt, rc);
5320
5321         cplen = strlcpy(o->od_svname, lustre_cfg_string(cfg, 4),
5322                         sizeof(o->od_svname));
5323         if (cplen >= sizeof(o->od_svname)) {
5324                 rc = -E2BIG;
5325                 GOTO(out_mnt, rc);
5326         }
5327
5328         rc = osd_obj_map_init(env, o);
5329         if (rc != 0)
5330                 GOTO(out_scrub, rc);
5331
5332         rc = lu_site_init(&o->od_site, l);
5333         if (rc)
5334                 GOTO(out_compat, rc);
5335         o->od_site.ls_bottom_dev = l;
5336
5337         rc = lu_site_init_finish(&o->od_site);
5338         if (rc)
5339                 GOTO(out_site, rc);
5340
5341         rc = osd_procfs_init(o, o->od_svname);
5342         if (rc != 0) {
5343                 CERROR("%s: can't initialize procfs: rc = %d\n",
5344                        o->od_svname, rc);
5345                 GOTO(out_site, rc);
5346         }
5347
5348         LASSERT(l->ld_site->ls_linkage.next && l->ld_site->ls_linkage.prev);
5349
5350         /* initialize quota slave instance */
5351         o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
5352                                      o->od_proc_entry);
5353         if (IS_ERR(o->od_quota_slave)) {
5354                 rc = PTR_ERR(o->od_quota_slave);
5355                 o->od_quota_slave = NULL;
5356                 GOTO(out_procfs, rc);
5357         }
5358
5359         RETURN(0);
5360 out_procfs:
5361         osd_procfs_fini(o);
5362 out_site:
5363         lu_site_fini(&o->od_site);
5364 out_compat:
5365         osd_obj_map_fini(o);
5366 out_scrub:
5367         osd_scrub_cleanup(env, o);
5368 out_mnt:
5369         osd_oi_fini(info, o);
5370         osd_shutdown(env, o);
5371         mntput(o->od_mnt);
5372         o->od_mnt = NULL;
5373 out_capa:
5374         cleanup_capa_hash(o->od_capa_hash);
5375 out:
5376         RETURN(rc);
5377 }
5378
5379 static struct lu_device *osd_device_alloc(const struct lu_env *env,
5380                                           struct lu_device_type *t,
5381                                           struct lustre_cfg *cfg)
5382 {
5383         struct osd_device *o;
5384         int                rc;
5385
5386         OBD_ALLOC_PTR(o);
5387         if (o == NULL)
5388                 return ERR_PTR(-ENOMEM);
5389
5390         rc = dt_device_init(&o->od_dt_dev, t);
5391         if (rc == 0) {
5392                 /* Because the ctx might be revived in dt_device_init,
5393                  * refill the env here */
5394                 lu_env_refill((struct lu_env *)env);
5395                 rc = osd_device_init0(env, o, cfg);
5396                 if (rc)
5397                         dt_device_fini(&o->od_dt_dev);
5398         }
5399
5400         if (unlikely(rc != 0))
5401                 OBD_FREE_PTR(o);
5402
5403         return rc == 0 ? osd2lu_dev(o) : ERR_PTR(rc);
5404 }
5405
5406 static struct lu_device *osd_device_free(const struct lu_env *env,
5407                                          struct lu_device *d)
5408 {
5409         struct osd_device *o = osd_dev(d);
5410         ENTRY;
5411
5412         cleanup_capa_hash(o->od_capa_hash);
5413         /* XXX: make osd top device in order to release reference */
5414         d->ld_site->ls_top_dev = d;
5415         lu_site_purge(env, d->ld_site, -1);
5416         if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
5417                 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
5418                 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
5419         }
5420         lu_site_fini(&o->od_site);
5421         dt_device_fini(&o->od_dt_dev);
5422         OBD_FREE_PTR(o);
5423         RETURN(NULL);
5424 }
5425
5426 static int osd_process_config(const struct lu_env *env,
5427                               struct lu_device *d, struct lustre_cfg *cfg)
5428 {
5429         struct osd_device *o = osd_dev(d);
5430         int err;
5431         ENTRY;
5432
5433         switch(cfg->lcfg_command) {
5434         case LCFG_SETUP:
5435                 err = osd_mount(env, o, cfg);
5436                 break;
5437         case LCFG_CLEANUP:
5438                 lu_dev_del_linkage(d->ld_site, d);
5439                 err = osd_shutdown(env, o);
5440                 break;
5441         default:
5442                 err = -ENOSYS;
5443         }
5444
5445         RETURN(err);
5446 }
5447
5448 static int osd_recovery_complete(const struct lu_env *env,
5449                                  struct lu_device *d)
5450 {
5451         struct osd_device       *osd = osd_dev(d);
5452         int                      rc = 0;
5453         ENTRY;
5454
5455         if (osd->od_quota_slave == NULL)
5456                 RETURN(0);
5457
5458         /* start qsd instance on recovery completion, this notifies the quota
5459          * slave code that we are about to process new requests now */
5460         rc = qsd_start(env, osd->od_quota_slave);
5461         RETURN(rc);
5462 }
5463
5464 /*
5465  * we use exports to track all osd users
5466  */
5467 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
5468                            struct obd_device *obd, struct obd_uuid *cluuid,
5469                            struct obd_connect_data *data, void *localdata)
5470 {
5471         struct osd_device    *osd = osd_dev(obd->obd_lu_dev);
5472         struct lustre_handle  conn;
5473         int                   rc;
5474         ENTRY;
5475
5476         CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
5477
5478         rc = class_connect(&conn, obd, cluuid);
5479         if (rc)
5480                 RETURN(rc);
5481
5482         *exp = class_conn2export(&conn);
5483
5484         spin_lock(&osd->od_osfs_lock);
5485         osd->od_connects++;
5486         spin_unlock(&osd->od_osfs_lock);
5487
5488         RETURN(0);
5489 }
5490
5491 /*
5492  * once last export (we don't count self-export) disappeared
5493  * osd can be released
5494  */
5495 static int osd_obd_disconnect(struct obd_export *exp)
5496 {
5497         struct obd_device *obd = exp->exp_obd;
5498         struct osd_device *osd = osd_dev(obd->obd_lu_dev);
5499         int                rc, release = 0;
5500         ENTRY;
5501
5502         /* Only disconnect the underlying layers on the final disconnect. */
5503         spin_lock(&osd->od_osfs_lock);
5504         osd->od_connects--;
5505         if (osd->od_connects == 0)
5506                 release = 1;
5507         spin_unlock(&osd->od_osfs_lock);
5508
5509         rc = class_disconnect(exp); /* bz 9811 */
5510
5511         if (rc == 0 && release)
5512                 class_manual_cleanup(obd);
5513         RETURN(rc);
5514 }
5515
5516 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
5517                        struct lu_device *dev)
5518 {
5519         struct osd_device *osd = osd_dev(dev);
5520         int                result = 0;
5521         ENTRY;
5522
5523         if (dev->ld_site && lu_device_is_md(dev->ld_site->ls_top_dev)) {
5524                 /* MDT/MDD still use old infrastructure to create
5525                  * special files */
5526                 result = llo_local_objects_setup(env, lu2md_dev(pdev),
5527                                                  lu2dt_dev(dev));
5528                 if (result)
5529                         RETURN(result);
5530         }
5531
5532         if (osd->od_quota_slave != NULL)
5533                 /* set up quota slave objects */
5534                 result = qsd_prepare(env, osd->od_quota_slave);
5535
5536         RETURN(result);
5537 }
5538
5539 static const struct lu_object_operations osd_lu_obj_ops = {
5540         .loo_object_init      = osd_object_init,
5541         .loo_object_delete    = osd_object_delete,
5542         .loo_object_release   = osd_object_release,
5543         .loo_object_free      = osd_object_free,
5544         .loo_object_print     = osd_object_print,
5545         .loo_object_invariant = osd_object_invariant
5546 };
5547
5548 const struct lu_device_operations osd_lu_ops = {
5549         .ldo_object_alloc      = osd_object_alloc,
5550         .ldo_process_config    = osd_process_config,
5551         .ldo_recovery_complete = osd_recovery_complete,
5552         .ldo_prepare           = osd_prepare,
5553 };
5554
5555 static const struct lu_device_type_operations osd_device_type_ops = {
5556         .ldto_init = osd_type_init,
5557         .ldto_fini = osd_type_fini,
5558
5559         .ldto_start = osd_type_start,
5560         .ldto_stop  = osd_type_stop,
5561
5562         .ldto_device_alloc = osd_device_alloc,
5563         .ldto_device_free  = osd_device_free,
5564
5565         .ldto_device_init    = osd_device_init,
5566         .ldto_device_fini    = osd_device_fini
5567 };
5568
5569 struct lu_device_type osd_device_type = {
5570         .ldt_tags     = LU_DEVICE_DT,
5571         .ldt_name     = LUSTRE_OSD_LDISKFS_NAME,
5572         .ldt_ops      = &osd_device_type_ops,
5573         .ldt_ctx_tags = LCT_LOCAL,
5574 };
5575
5576 /*
5577  * lprocfs legacy support.
5578  */
5579 static struct obd_ops osd_obd_device_ops = {
5580         .o_owner = THIS_MODULE,
5581         .o_connect      = osd_obd_connect,
5582         .o_disconnect   = osd_obd_disconnect
5583 };
5584
5585 static int __init osd_mod_init(void)
5586 {
5587         struct lprocfs_static_vars lvars;
5588
5589         osd_oi_mod_init();
5590         lprocfs_osd_init_vars(&lvars);
5591         return class_register_type(&osd_obd_device_ops, NULL, lvars.module_vars,
5592                                    LUSTRE_OSD_LDISKFS_NAME, &osd_device_type);
5593 }
5594
5595 static void __exit osd_mod_exit(void)
5596 {
5597         class_unregister_type(LUSTRE_OSD_LDISKFS_NAME);
5598 }
5599
5600 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5601 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_LDISKFS_NAME")");
5602 MODULE_LICENSE("GPL");
5603
5604 cfs_module(osd, "0.1.0", osd_mod_init, osd_mod_exit);