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, 2013, 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 /* process_config */
  66 #include <lustre_param.h>
  67
  68 #include "osd_internal.h"
  69 #include "osd_dynlocks.h"
  70
  71 /* llo_* api support */
  72 #include <md_object.h>
  73 #include <lustre_quota.h>
  74
  75 #include <ldiskfs/xattr.h>
  76
  77 int ldiskfs_pdo = 1;
  78 CFS_MODULE_PARM(ldiskfs_pdo, "i", int, 0644,
  79                 "ldiskfs with parallel directory operations");
  80
  81 int ldiskfs_track_declares_assert;
  82 CFS_MODULE_PARM(ldiskfs_track_declares_assert, "i", int, 0644,
  83                 "LBUG during tracking of declares");
  84
  85 /* Slab to allocate dynlocks */
  86 struct kmem_cache *dynlock_cachep;
  87
  88 static struct lu_kmem_descr ldiskfs_caches[] = {
  89         {
  90                 .ckd_cache = &dynlock_cachep,
  91                 .ckd_name  = "dynlock_cache",
  92                 .ckd_size  = sizeof(struct dynlock_handle)
  93         },
  94         {
  95                 .ckd_cache = NULL
  96         }
  97 };
  98
  99 static const char dot[] = ".";
 100 static const char dotdot[] = "..";
 101 static const char remote_obj_dir[] = "REM_OBJ_DIR";
 102
 103 static const struct lu_object_operations      osd_lu_obj_ops;
 104 static const struct dt_object_operations      osd_obj_ops;
 105 static const struct dt_object_operations      osd_obj_ea_ops;
 106 static const struct dt_object_operations      osd_obj_otable_it_ops;
 107 static const struct dt_index_operations       osd_index_iam_ops;
 108 static const struct dt_index_operations       osd_index_ea_ops;
 109
 110 int osd_trans_declare_op2rb[] = {
 111         [OSD_OT_ATTR_SET]       = OSD_OT_ATTR_SET,
 112         [OSD_OT_PUNCH]          = OSD_OT_MAX,
 113         [OSD_OT_XATTR_SET]      = OSD_OT_XATTR_SET,
 114         [OSD_OT_CREATE]         = OSD_OT_DESTROY,
 115         [OSD_OT_DESTROY]        = OSD_OT_CREATE,
 116         [OSD_OT_REF_ADD]        = OSD_OT_REF_DEL,
 117         [OSD_OT_REF_DEL]        = OSD_OT_REF_ADD,
 118         [OSD_OT_WRITE]          = OSD_OT_WRITE,
 119         [OSD_OT_INSERT]         = OSD_OT_DELETE,
 120         [OSD_OT_DELETE]         = OSD_OT_INSERT,
 121         [OSD_OT_UPDATE]         = OSD_OT_MAX,
 122         [OSD_OT_QUOTA]          = OSD_OT_MAX,
 123 };
 124
 125 static int osd_has_index(const struct osd_object *obj)
 126 {
 127         return obj->oo_dt.do_index_ops != NULL;
 128 }
 129
 130 static int osd_object_invariant(const struct lu_object *l)
 131 {
 132         return osd_invariant(osd_obj(l));
 133 }
 134
 135 /*
 136  * Concurrency: doesn't matter
 137  */
 138
 139 /*
 140  * Concurrency: doesn't matter
 141  */
 142 static int osd_write_locked(const struct lu_env *env, struct osd_object *o)
 143 {
 144         struct osd_thread_info *oti = osd_oti_get(env);
 145         return oti->oti_w_locks > 0 && o->oo_owner == env;
 146 }
 147
 148 /*
 149  * Concurrency: doesn't access mutable data
 150  */
 151 static int osd_root_get(const struct lu_env *env,
 152                         struct dt_device *dev, struct lu_fid *f)
 153 {
 154         lu_local_obj_fid(f, OSD_FS_ROOT_OID);
 155         return 0;
 156 }
 157
 158 /*
 159  * OSD object methods.
 160  */
 161
 162 /*
 163  * Concurrency: no concurrent access is possible that early in object
 164  * life-cycle.
 165  */
 166 static struct lu_object *osd_object_alloc(const struct lu_env *env,
 167                                           const struct lu_object_header *hdr,
 168                                           struct lu_device *d)
 169 {
 170         struct osd_object *mo;
 171
 172         OBD_ALLOC_PTR(mo);
 173         if (mo != NULL) {
 174                 struct lu_object *l;
 175
 176                 l = &mo->oo_dt.do_lu;
 177                 dt_object_init(&mo->oo_dt, NULL, d);
 178                 mo->oo_dt.do_ops = &osd_obj_ea_ops;
 179                 l->lo_ops = &osd_lu_obj_ops;
 180                 init_rwsem(&mo->oo_sem);
 181                 init_rwsem(&mo->oo_ext_idx_sem);
 182                 spin_lock_init(&mo->oo_guard);
 183                 return l;
 184         } else {
 185                 return NULL;
 186         }
 187 }
 188
 189 int osd_get_lma(struct osd_thread_info *info, struct inode *inode,
 190                 struct dentry *dentry, struct lustre_mdt_attrs *lma)
 191 {
 192         int rc;
 193
 194         CLASSERT(LMA_OLD_SIZE >= sizeof(*lma));
 195         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMA,
 196                              info->oti_mdt_attrs_old, LMA_OLD_SIZE);
 197         if (rc > 0) {
 198                 if ((void *)lma != (void *)info->oti_mdt_attrs_old)
 199                         memcpy(lma, info->oti_mdt_attrs_old, sizeof(*lma));
 200                 rc = 0;
 201                 lustre_lma_swab(lma);
 202                 /* Check LMA compatibility */
 203                 if (lma->lma_incompat & ~LMA_INCOMPAT_SUPP) {
 204                         CWARN("%.16s: unsupported incompat LMA feature(s) %#x "
 205                               "for fid = "DFID", ino = %lu\n",
 206                               LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
 207                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 208                               PFID(&lma->lma_self_fid), inode->i_ino);
 209                         rc = -EOPNOTSUPP;
 210                 }
 211         } else if (rc == 0) {
 212                 rc = -ENODATA;
 213         }
 214
 215         return rc;
 216 }
 217
 218 /*
 219  * retrieve object from backend ext fs.
 220  **/
 221 struct inode *osd_iget(struct osd_thread_info *info, struct osd_device *dev,
 222                        struct osd_inode_id *id)
 223 {
 224         struct inode *inode = NULL;
 225
 226         inode = ldiskfs_iget(osd_sb(dev), id->oii_ino);
 227         if (IS_ERR(inode)) {
 228                 CDEBUG(D_INODE, "no inode: ino = %u, rc = %ld\n",
 229                        id->oii_ino, PTR_ERR(inode));
 230         } else if (id->oii_gen != OSD_OII_NOGEN &&
 231                    inode->i_generation != id->oii_gen) {
 232                 CDEBUG(D_INODE, "unmatched inode: ino = %u, oii_gen = %u, "
 233                        "i_generation = %u\n",
 234                        id->oii_ino, id->oii_gen, inode->i_generation);
 235                 iput(inode);
 236                 inode = ERR_PTR(-ESTALE);
 237         } else if (inode->i_nlink == 0) {
 238                 /* due to parallel readdir and unlink,
 239                 * we can have dead inode here. */
 240                 CDEBUG(D_INODE, "stale inode: ino = %u\n", id->oii_ino);
 241                 iput(inode);
 242                 inode = ERR_PTR(-ESTALE);
 243         } else if (is_bad_inode(inode)) {
 244                 CWARN("%.16s: bad inode: ino = %u\n",
 245                 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, id->oii_ino);
 246                 iput(inode);
 247                 inode = ERR_PTR(-ENOENT);
 248         } else {
 249                 if (id->oii_gen == OSD_OII_NOGEN)
 250                         osd_id_gen(id, inode->i_ino, inode->i_generation);
 251
 252                 /* Do not update file c/mtime in ldiskfs.
 253                  * NB: we don't have any lock to protect this because we don't
 254                  * have reference on osd_object now, but contention with
 255                  * another lookup + attr_set can't happen in the tiny window
 256                  * between if (...) and set S_NOCMTIME. */
 257                 if (!(inode->i_flags & S_NOCMTIME))
 258                         inode->i_flags |= S_NOCMTIME;
 259         }
 260         return inode;
 261 }
 262
 263 static struct inode *
 264 osd_iget_fid(struct osd_thread_info *info, struct osd_device *dev,
 265              struct osd_inode_id *id, struct lu_fid *fid)
 266 {
 267         struct lustre_mdt_attrs *lma   = &info->oti_mdt_attrs;
 268         struct inode            *inode;
 269         int                      rc;
 270
 271         inode = osd_iget(info, dev, id);
 272         if (IS_ERR(inode))
 273                 return inode;
 274
 275         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
 276         if (rc == 0) {
 277                 *fid = lma->lma_self_fid;
 278         } else if (rc == -ENODATA) {
 279                 if (unlikely(inode == osd_sb(dev)->s_root->d_inode))
 280                         lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
 281                 else
 282                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
 283         } else {
 284                 iput(inode);
 285                 inode = ERR_PTR(rc);
 286         }
 287         return inode;
 288 }
 289
 290 static struct inode *osd_iget_check(struct osd_thread_info *info,
 291                                     struct osd_device *dev,
 292                                     const struct lu_fid *fid,
 293                                     struct osd_inode_id *id,
 294                                     bool in_oi)
 295 {
 296         struct inode    *inode;
 297         int              rc     = 0;
 298         ENTRY;
 299
 300         inode = ldiskfs_iget(osd_sb(dev), id->oii_ino);
 301         if (IS_ERR(inode)) {
 302                 rc = PTR_ERR(inode);
 303                 if (!in_oi || (rc != -ENOENT && rc != -ESTALE)) {
 304                         CDEBUG(D_INODE, "no inode: ino = %u, rc = %d\n",
 305                                id->oii_ino, rc);
 306
 307                         GOTO(put, rc);
 308                 }
 309
 310                 goto check_oi;
 311         }
 312
 313         if (is_bad_inode(inode)) {
 314                 rc = -ENOENT;
 315                 if (!in_oi) {
 316                         CDEBUG(D_INODE, "bad inode: ino = %u\n", id->oii_ino);
 317
 318                         GOTO(put, rc);
 319                 }
 320
 321                 goto check_oi;
 322         }
 323
 324         if (id->oii_gen != OSD_OII_NOGEN &&
 325             inode->i_generation != id->oii_gen) {
 326                 rc = -ESTALE;
 327                 if (!in_oi) {
 328                         CDEBUG(D_INODE, "unmatched inode: ino = %u, "
 329                                "oii_gen = %u, i_generation = %u\n",
 330                                id->oii_ino, id->oii_gen, inode->i_generation);
 331
 332                         GOTO(put, rc);
 333                 }
 334
 335                 goto check_oi;
 336         }
 337
 338         if (inode->i_nlink == 0) {
 339                 rc = -ENOENT;
 340                 if (!in_oi) {
 341                         CDEBUG(D_INODE, "stale inode: ino = %u\n", id->oii_ino);
 342
 343                         GOTO(put, rc);
 344                 }
 345
 346                 goto check_oi;
 347         }
 348
 349 check_oi:
 350         if (rc != 0) {
 351                 LASSERTF(rc == -ESTALE || rc == -ENOENT, "rc = %d\n", rc);
 352
 353                 rc = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD);
 354                 /* XXX: There are some possible cases:
 355                  *      1. rc = 0.
 356                  *         Backup/restore caused the OI invalid.
 357                  *      2. rc = 0.
 358                  *         Someone unlinked the object but NOT removed
 359                  *         the OI mapping, such as mount target device
 360                  *         as ldiskfs, and modify something directly.
 361                  *      3. rc = -ENOENT.
 362                  *         Someone just removed the object between the
 363                  *         former oi_lookup and the iget. It is normal.
 364                  *      4. Other failure cases.
 365                  *
 366                  *      Generally, when the device is mounted, it will
 367                  *      auto check whether the system is restored from
 368                  *      file-level backup or not. We trust such detect
 369                  *      to distinguish the 1st case from the 2nd case. */
 370                 if (rc == 0) {
 371                         if (!IS_ERR(inode) && inode->i_generation != 0 &&
 372                             inode->i_generation == id->oii_gen)
 373                                 rc = -ENOENT;
 374                         else
 375                                 rc = -EREMCHG;
 376                 }
 377         } else {
 378                 if (id->oii_gen == OSD_OII_NOGEN)
 379                         osd_id_gen(id, inode->i_ino, inode->i_generation);
 380
 381                 /* Do not update file c/mtime in ldiskfs.
 382                  * NB: we don't have any lock to protect this because we don't
 383                  * have reference on osd_object now, but contention with
 384                  * another lookup + attr_set can't happen in the tiny window
 385                  * between if (...) and set S_NOCMTIME. */
 386                 if (!(inode->i_flags & S_NOCMTIME))
 387                         inode->i_flags |= S_NOCMTIME;
 388         }
 389
 390         GOTO(put, rc);
 391
 392 put:
 393         if (rc != 0) {
 394                 if (!IS_ERR(inode))
 395                         iput(inode);
 396
 397                 inode = ERR_PTR(rc);
 398         }
 399
 400         return inode;
 401 }
 402
 403 /**
 404  * \retval +v: new filter_fid, does not contain self-fid
 405  * \retval 0:  filter_fid_old, contains self-fid
 406  * \retval -v: other failure cases
 407  */
 408 int osd_get_idif(struct osd_thread_info *info, struct inode *inode,
 409                  struct dentry *dentry, struct lu_fid *fid)
 410 {
 411         struct filter_fid_old   *ff     = &info->oti_ff;
 412         struct ost_id           *ostid  = &info->oti_ostid;
 413         int                      rc;
 414
 415         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_FID, ff, sizeof(*ff));
 416         if (rc == sizeof(*ff)) {
 417                 rc = 0;
 418                 ostid_set_seq(ostid, le64_to_cpu(ff->ff_seq));
 419                 ostid_set_id(ostid, le64_to_cpu(ff->ff_objid));
 420                 /* XXX: should use real OST index in the future. LU-3569 */
 421                 ostid_to_fid(fid, ostid, 0);
 422         } else if (rc == sizeof(struct filter_fid)) {
 423                 rc = 1;
 424         } else if (rc >= 0) {
 425                 rc = -EINVAL;
 426         }
 427
 428         return rc;
 429 }
 430
 431 static int osd_lma_self_repair(struct osd_thread_info *info,
 432                                struct osd_device *osd, struct inode *inode,
 433                                const struct lu_fid *fid, __u32 compat)
 434 {
 435         handle_t *jh;
 436         int       rc;
 437
 438         LASSERT(current->journal_info == NULL);
 439
 440         jh = osd_journal_start_sb(osd_sb(osd), LDISKFS_HT_MISC,
 441                                   osd_dto_credits_noquota[DTO_XATTR_SET]);
 442         if (IS_ERR(jh)) {
 443                 rc = PTR_ERR(jh);
 444                 CWARN("%s: cannot start journal for lma_self_repair: rc = %d\n",
 445                       osd_name(osd), rc);
 446                 return rc;
 447         }
 448
 449         rc = osd_ea_fid_set(info, inode, fid, compat, 0);
 450         if (rc != 0)
 451                 CWARN("%s: cannot self repair the LMA: rc = %d\n",
 452                       osd_name(osd), rc);
 453         ldiskfs_journal_stop(jh);
 454         return rc;
 455 }
 456
 457 static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
 458 {
 459         struct osd_thread_info  *info   = osd_oti_get(env);
 460         struct osd_device       *osd    = osd_obj2dev(obj);
 461         struct lustre_mdt_attrs *lma    = &info->oti_mdt_attrs;
 462         struct inode            *inode  = obj->oo_inode;
 463         struct dentry           *dentry = &info->oti_obj_dentry;
 464         struct lu_fid           *fid    = NULL;
 465         const struct lu_fid     *rfid   = lu_object_fid(&obj->oo_dt.do_lu);
 466         int                      rc;
 467         ENTRY;
 468
 469         CLASSERT(LMA_OLD_SIZE >= sizeof(*lma));
 470         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMA,
 471                              info->oti_mdt_attrs_old, LMA_OLD_SIZE);
 472         if (rc == -ENODATA && !fid_is_igif(rfid) && osd->od_check_ff) {
 473                 fid = &lma->lma_self_fid;
 474                 rc = osd_get_idif(info, inode, dentry, fid);
 475                 if ((rc > 0) || (rc == -ENODATA && osd->od_lma_self_repair)) {
 476                         /* For the given OST-object, if it has neither LMA nor
 477                          * FID in XATTR_NAME_FID, then the given FID (which is
 478                          * contained in the @obj, from client RPC for locating
 479                          * the OST-object) is trusted. We use it to generate
 480                          * the LMA. */
 481                         osd_lma_self_repair(info, osd, inode, rfid,
 482                                 fid_is_on_ost(info, osd, fid, OI_CHECK_FLD) ?
 483                                 LMAC_FID_ON_OST : 0);
 484                         RETURN(0);
 485                 }
 486         }
 487
 488         if (unlikely(rc == -ENODATA))
 489                 RETURN(0);
 490
 491         if (rc < 0)
 492                 RETURN(rc);
 493
 494         if (rc > 0) {
 495                 rc = 0;
 496                 lustre_lma_swab(lma);
 497                 if (unlikely((lma->lma_incompat & ~LMA_INCOMPAT_SUPP) ||
 498                              CFS_FAIL_CHECK(OBD_FAIL_OSD_LMA_INCOMPAT))) {
 499                         CWARN("%s: unsupported incompat LMA feature(s) %#x for "
 500                               "fid = "DFID", ino = %lu\n", osd_name(osd),
 501                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 502                               PFID(rfid), inode->i_ino);
 503                         rc = -EOPNOTSUPP;
 504                 } else if (!(lma->lma_compat & LMAC_NOT_IN_OI)) {
 505                         fid = &lma->lma_self_fid;
 506                 }
 507         }
 508
 509         if (fid != NULL && unlikely(!lu_fid_eq(rfid, fid))) {
 510                 if (fid_is_idif(rfid) && fid_is_idif(fid)) {
 511                         struct ost_id   *oi   = &info->oti_ostid;
 512                         struct lu_fid   *fid1 = &info->oti_fid3;
 513                         __u32            idx  = fid_idif_ost_idx(rfid);
 514
 515                         /* For old IDIF, the OST index is not part of the IDIF,
 516                          * Means that different OSTs may have the same IDIFs.
 517                          * Under such case, we need to make some compatible
 518                          * check to make sure to trigger OI scrub properly. */
 519                         if (idx != 0 && fid_idif_ost_idx(fid) == 0) {
 520                                 /* Given @rfid is new, LMA is old. */
 521                                 fid_to_ostid(fid, oi);
 522                                 ostid_to_fid(fid1, oi, idx);
 523                                 if (lu_fid_eq(fid1, rfid)) {
 524                                         if (osd->od_lma_self_repair)
 525                                                 osd_lma_self_repair(info, osd,
 526                                                         inode, rfid,
 527                                                         LMAC_FID_ON_OST);
 528                                         RETURN(0);
 529                                 }
 530                         }
 531                 }
 532
 533                 CDEBUG(D_INODE, "%s: FID "DFID" != self_fid "DFID"\n",
 534                        osd_name(osd), PFID(rfid), PFID(fid));
 535                 rc = -EREMCHG;
 536         }
 537
 538         RETURN(rc);
 539 }
 540
 541 static int osd_fid_lookup(const struct lu_env *env, struct osd_object *obj,
 542                           const struct lu_fid *fid,
 543                           const struct lu_object_conf *conf)
 544 {
 545         struct osd_thread_info *info;
 546         struct lu_device       *ldev   = obj->oo_dt.do_lu.lo_dev;
 547         struct osd_device      *dev;
 548         struct osd_idmap_cache *oic;
 549         struct osd_inode_id    *id;
 550         struct inode           *inode;
 551         struct osd_scrub       *scrub;
 552         struct scrub_file      *sf;
 553         int                     result;
 554         int                     saved  = 0;
 555         bool                    in_oi  = false;
 556         bool                    triggered = false;
 557         ENTRY;
 558
 559         LINVRNT(osd_invariant(obj));
 560         LASSERT(obj->oo_inode == NULL);
 561         LASSERTF(fid_is_sane(fid) || fid_is_idif(fid), DFID, PFID(fid));
 562
 563         dev = osd_dev(ldev);
 564         scrub = &dev->od_scrub;
 565         sf = &scrub->os_file;
 566         info = osd_oti_get(env);
 567         LASSERT(info);
 568         oic = &info->oti_cache;
 569
 570         if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
 571                 RETURN(-ENOENT);
 572
 573         /* For the object is created as locking anchor, or for the object to
 574          * be created on disk. No need to osd_oi_lookup() at here because FID
 575          * shouldn't never be re-used, if it's really a duplicate FID from
 576          * unexpected reason, we should be able to detect it later by calling
 577          * do_create->osd_oi_insert(). */
 578         if (conf != NULL && conf->loc_flags & LOC_F_NEW)
 579                 GOTO(out, result = 0);
 580
 581         /* Search order: 1. per-thread cache. */
 582         if (lu_fid_eq(fid, &oic->oic_fid) &&
 583             likely(oic->oic_dev == dev)) {
 584                 id = &oic->oic_lid;
 585                 goto iget;
 586         }
 587
 588         id = &info->oti_id;
 589         if (!cfs_list_empty(&scrub->os_inconsistent_items)) {
 590                 /* Search order: 2. OI scrub pending list. */
 591                 result = osd_oii_lookup(dev, fid, id);
 592                 if (result == 0)
 593                         goto iget;
 594         }
 595
 596         /* Search order: 3. OI files. */
 597         result = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD);
 598         if (result == -ENOENT) {
 599                 if (!fid_is_norm(fid) ||
 600                     fid_is_on_ost(info, dev, fid, OI_CHECK_FLD) ||
 601                     !ldiskfs_test_bit(osd_oi_fid2idx(dev,fid),
 602                                       sf->sf_oi_bitmap))
 603                         GOTO(out, result = 0);
 604
 605                 goto trigger;
 606         }
 607
 608         if (result != 0)
 609                 GOTO(out, result);
 610
 611         in_oi = true;
 612
 613 iget:
 614         inode = osd_iget_check(info, dev, fid, id, in_oi);
 615         if (IS_ERR(inode)) {
 616                 result = PTR_ERR(inode);
 617                 if (result == -ENOENT || result == -ESTALE) {
 618                         if (!in_oi)
 619                                 fid_zero(&oic->oic_fid);
 620
 621                         GOTO(out, result = -ENOENT);
 622                 } else if (result == -EREMCHG) {
 623
 624 trigger:
 625                         if (!in_oi)
 626                                 fid_zero(&oic->oic_fid);
 627
 628                         if (unlikely(triggered))
 629                                 GOTO(out, result = saved);
 630
 631                         triggered = true;
 632                         if (thread_is_running(&scrub->os_thread)) {
 633                                 result = -EINPROGRESS;
 634                         } else if (!dev->od_noscrub) {
 635                                 result = osd_scrub_start(dev);
 636                                 LCONSOLE_WARN("%.16s: trigger OI scrub by RPC "
 637                                               "for "DFID", rc = %d [1]\n",
 638                                               osd_name(dev), PFID(fid),result);
 639                                 if (result == 0 || result == -EALREADY)
 640                                         result = -EINPROGRESS;
 641                                 else
 642                                         result = -EREMCHG;
 643                         }
 644
 645                         /* We still have chance to get the valid inode: for the
 646                          * object which is referenced by remote name entry, the
 647                          * object on the local MDT will be linked under the dir
 648                          * of "/REMOTE_PARENT_DIR" with its FID string as name.
 649                          *
 650                          * We do not know whether the object for the given FID
 651                          * is referenced by some remote name entry or not, and
 652                          * especially for DNE II, a multiple-linked object may
 653                          * have many name entries reside on many MDTs.
 654                          *
 655                          * To simplify the operation, OSD will not distinguish
 656                          * more, just lookup "/REMOTE_PARENT_DIR". Usually, it
 657                          * only happened for the RPC from other MDT during the
 658                          * OI scrub, or for the client side RPC with FID only,
 659                          * such as FID to path, or from old connected client. */
 660                         saved = result;
 661                         result = osd_lookup_in_remote_parent(info, dev,
 662                                                              fid, id);
 663                         if (result == 0) {
 664                                 in_oi = false;
 665                                 goto iget;
 666                         }
 667
 668                         result = saved;
 669                 }
 670
 671                 GOTO(out, result);
 672         }
 673
 674         obj->oo_inode = inode;
 675         LASSERT(obj->oo_inode->i_sb == osd_sb(dev));
 676
 677         result = osd_check_lma(env, obj);
 678         if (result != 0) {
 679                 iput(inode);
 680                 obj->oo_inode = NULL;
 681                 if (result == -EREMCHG) {
 682                         if (!in_oi) {
 683                                 result = osd_oi_lookup(info, dev, fid, id,
 684                                                        OI_CHECK_FLD);
 685                                 if (result != 0) {
 686                                         fid_zero(&oic->oic_fid);
 687                                         GOTO(out, result);
 688                                 }
 689                         }
 690
 691                         goto trigger;
 692                 }
 693
 694                 GOTO(out, result);
 695         }
 696
 697         obj->oo_compat_dot_created = 1;
 698         obj->oo_compat_dotdot_created = 1;
 699
 700         if (!S_ISDIR(inode->i_mode) || !ldiskfs_pdo) /* done */
 701                 GOTO(out, result = 0);
 702
 703         LASSERT(obj->oo_hl_head == NULL);
 704         obj->oo_hl_head = ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
 705         if (obj->oo_hl_head == NULL) {
 706                 obj->oo_inode = NULL;
 707                 iput(inode);
 708                 GOTO(out, result = -ENOMEM);
 709         }
 710         GOTO(out, result = 0);
 711
 712 out:
 713         LINVRNT(osd_invariant(obj));
 714         return result;
 715 }
 716
 717 /*
 718  * Concurrency: shouldn't matter.
 719  */
 720 static void osd_object_init0(struct osd_object *obj)
 721 {
 722         LASSERT(obj->oo_inode != NULL);
 723         obj->oo_dt.do_body_ops = &osd_body_ops;
 724         obj->oo_dt.do_lu.lo_header->loh_attr |=
 725                 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
 726 }
 727
 728 /*
 729  * Concurrency: no concurrent access is possible that early in object
 730  * life-cycle.
 731  */
 732 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 733                            const struct lu_object_conf *conf)
 734 {
 735         struct osd_object *obj = osd_obj(l);
 736         int result;
 737
 738         LINVRNT(osd_invariant(obj));
 739
 740         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 741                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 742                 l->lo_header->loh_attr |= LOHA_EXISTS;
 743                 return 0;
 744         }
 745
 746         result = osd_fid_lookup(env, obj, lu_object_fid(l), conf);
 747         obj->oo_dt.do_body_ops = &osd_body_ops_new;
 748         if (result == 0 && obj->oo_inode != NULL)
 749                 osd_object_init0(obj);
 750
 751         LINVRNT(osd_invariant(obj));
 752         return result;
 753 }
 754
 755 /*
 756  * Concurrency: no concurrent access is possible that late in object
 757  * life-cycle.
 758  */
 759 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 760 {
 761         struct osd_object *obj = osd_obj(l);
 762
 763         LINVRNT(osd_invariant(obj));
 764
 765         dt_object_fini(&obj->oo_dt);
 766         if (obj->oo_hl_head != NULL)
 767                 ldiskfs_htree_lock_head_free(obj->oo_hl_head);
 768         OBD_FREE_PTR(obj);
 769 }
 770
 771 /*
 772  * Concurrency: no concurrent access is possible that late in object
 773  * life-cycle.
 774  */
 775 static void osd_index_fini(struct osd_object *o)
 776 {
 777         struct iam_container *bag;
 778
 779         if (o->oo_dir != NULL) {
 780                 bag = &o->oo_dir->od_container;
 781                 if (o->oo_inode != NULL) {
 782                         if (bag->ic_object == o->oo_inode)
 783                                 iam_container_fini(bag);
 784                 }
 785                 OBD_FREE_PTR(o->oo_dir);
 786                 o->oo_dir = NULL;
 787         }
 788 }
 789
 790 /*
 791  * Concurrency: no concurrent access is possible that late in object
 792  * life-cycle (for all existing callers, that is. New callers have to provide
 793  * their own locking.)
 794  */
 795 static int osd_inode_unlinked(const struct inode *inode)
 796 {
 797         return inode->i_nlink == 0;
 798 }
 799
 800 enum {
 801         OSD_TXN_OI_DELETE_CREDITS    = 20,
 802         OSD_TXN_INODE_DELETE_CREDITS = 20
 803 };
 804
 805 /*
 806  * Journal
 807  */
 808
 809 #if OSD_THANDLE_STATS
 810 /**
 811  * Set time when the handle is allocated
 812  */
 813 static void osd_th_alloced(struct osd_thandle *oth)
 814 {
 815         oth->oth_alloced = cfs_time_current();
 816 }
 817
 818 /**
 819  * Set time when the handle started
 820  */
 821 static void osd_th_started(struct osd_thandle *oth)
 822 {
 823         oth->oth_started = cfs_time_current();
 824 }
 825
 826 /**
 827  * Helper function to convert time interval to microseconds packed in
 828  * long int.
 829  */
 830 static long interval_to_usec(cfs_time_t start, cfs_time_t end)
 831 {
 832         struct timeval val;
 833
 834         cfs_duration_usec(cfs_time_sub(end, start), &val);
 835         return val.tv_sec * 1000000 + val.tv_usec;
 836 }
 837
 838 /**
 839  * Check whether the we deal with this handle for too long.
 840  */
 841 static void __osd_th_check_slow(void *oth, struct osd_device *dev,
 842                                 cfs_time_t alloced, cfs_time_t started,
 843                                 cfs_time_t closed)
 844 {
 845         cfs_time_t now = cfs_time_current();
 846
 847         LASSERT(dev != NULL);
 848
 849         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_STARTING,
 850                             interval_to_usec(alloced, started));
 851         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_OPEN,
 852                             interval_to_usec(started, closed));
 853         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_CLOSING,
 854                             interval_to_usec(closed, now));
 855
 856         if (cfs_time_before(cfs_time_add(alloced, cfs_time_seconds(30)), now)) {
 857                 CWARN("transaction handle %p was open for too long: "
 858                       "now "CFS_TIME_T" ,"
 859                       "alloced "CFS_TIME_T" ,"
 860                       "started "CFS_TIME_T" ,"
 861                       "closed "CFS_TIME_T"\n",
 862                       oth, now, alloced, started, closed);
 863                 libcfs_debug_dumpstack(NULL);
 864         }
 865 }
 866
 867 #define OSD_CHECK_SLOW_TH(oth, dev, expr)                               \
 868 {                                                                       \
 869         cfs_time_t __closed = cfs_time_current();                       \
 870         cfs_time_t __alloced = oth->oth_alloced;                        \
 871         cfs_time_t __started = oth->oth_started;                        \
 872                                                                         \
 873         expr;                                                           \
 874         __osd_th_check_slow(oth, dev, __alloced, __started, __closed);  \
 875 }
 876
 877 #else /* OSD_THANDLE_STATS */
 878
 879 #define osd_th_alloced(h)                  do {} while(0)
 880 #define osd_th_started(h)                  do {} while(0)
 881 #define OSD_CHECK_SLOW_TH(oth, dev, expr)  expr
 882
 883 #endif /* OSD_THANDLE_STATS */
 884
 885 /*
 886  * Concurrency: doesn't access mutable data.
 887  */
 888 static int osd_param_is_not_sane(const struct osd_device *dev,
 889                                  const struct thandle *th)
 890 {
 891         struct osd_thandle *oh = container_of(th, typeof(*oh), ot_super);
 892
 893         return oh->ot_credits > osd_journal(dev)->j_max_transaction_buffers;
 894 }
 895
 896 /*
 897  * Concurrency: shouldn't matter.
 898  */
 899 static void osd_trans_commit_cb(struct super_block *sb,
 900                                 struct ldiskfs_journal_cb_entry *jcb, int error)
 901 {
 902         struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb);
 903         struct thandle     *th  = &oh->ot_super;
 904         struct lu_device   *lud = &th->th_dev->dd_lu_dev;
 905         struct dt_txn_commit_cb *dcb, *tmp;
 906
 907         LASSERT(oh->ot_handle == NULL);
 908
 909         if (error)
 910                 CERROR("transaction @0x%p commit error: %d\n", th, error);
 911
 912         dt_txn_hook_commit(th);
 913
 914         /* call per-transaction callbacks if any */
 915         cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage) {
 916                 LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
 917                          "commit callback entry: magic=%x name='%s'\n",
 918                          dcb->dcb_magic, dcb->dcb_name);
 919                 cfs_list_del_init(&dcb->dcb_linkage);
 920                 dcb->dcb_func(NULL, th, dcb, error);
 921         }
 922
 923         lu_ref_del_at(&lud->ld_reference, &oh->ot_dev_link, "osd-tx", th);
 924         lu_device_put(lud);
 925         th->th_dev = NULL;
 926
 927         lu_context_exit(&th->th_ctx);
 928         lu_context_fini(&th->th_ctx);
 929         thandle_put(th);
 930 }
 931
 932 static struct thandle *osd_trans_create(const struct lu_env *env,
 933                                         struct dt_device *d)
 934 {
 935         struct osd_thread_info  *oti = osd_oti_get(env);
 936         struct osd_iobuf        *iobuf = &oti->oti_iobuf;
 937         struct osd_thandle      *oh;
 938         struct thandle          *th;
 939         ENTRY;
 940
 941         /* on pending IO in this thread should left from prev. request */
 942         LASSERT(atomic_read(&iobuf->dr_numreqs) == 0);
 943
 944         th = ERR_PTR(-ENOMEM);
 945         OBD_ALLOC_GFP(oh, sizeof *oh, GFP_NOFS);
 946         if (oh != NULL) {
 947                 oh->ot_quota_trans = &oti->oti_quota_trans;
 948                 memset(oh->ot_quota_trans, 0, sizeof(*oh->ot_quota_trans));
 949                 th = &oh->ot_super;
 950                 th->th_dev = d;
 951                 th->th_result = 0;
 952                 th->th_tags = LCT_TX_HANDLE;
 953                 oh->ot_credits = 0;
 954                 atomic_set(&th->th_refc, 1);
 955                 th->th_alloc_size = sizeof(*oh);
 956                 oti->oti_dev = osd_dt_dev(d);
 957                 CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
 958                 osd_th_alloced(oh);
 959
 960                 memset(oti->oti_declare_ops, 0,
 961                                         sizeof(oti->oti_declare_ops));
 962                 memset(oti->oti_declare_ops_rb, 0,
 963                                         sizeof(oti->oti_declare_ops_rb));
 964                 memset(oti->oti_declare_ops_cred, 0,
 965                                         sizeof(oti->oti_declare_ops_cred));
 966                 oti->oti_rollback = false;
 967         }
 968         RETURN(th);
 969 }
 970
 971 /*
 972  * Concurrency: shouldn't matter.
 973  */
 974 int osd_trans_start(const struct lu_env *env, struct dt_device *d,
 975                     struct thandle *th)
 976 {
 977         struct osd_thread_info *oti = osd_oti_get(env);
 978         struct osd_device  *dev = osd_dt_dev(d);
 979         handle_t           *jh;
 980         struct osd_thandle *oh;
 981         int rc;
 982
 983         ENTRY;
 984
 985         LASSERT(current->journal_info == NULL);
 986
 987         oh = container_of0(th, struct osd_thandle, ot_super);
 988         LASSERT(oh != NULL);
 989         LASSERT(oh->ot_handle == NULL);
 990
 991         rc = dt_txn_hook_start(env, d, th);
 992         if (rc != 0)
 993                 GOTO(out, rc);
 994
 995         if (unlikely(osd_param_is_not_sane(dev, th))) {
 996                 static unsigned long last_printed;
 997                 static int last_credits;
 998
 999                 CWARN("%.16s: too many transaction credits (%d > %d)\n",
1000                       LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
1001                       oh->ot_credits,
1002                       osd_journal(dev)->j_max_transaction_buffers);
1003                 CWARN("  create: %u/%u, destroy: %u/%u\n",
1004                       oti->oti_declare_ops[OSD_OT_CREATE],
1005                       oti->oti_declare_ops_cred[OSD_OT_CREATE],
1006                       oti->oti_declare_ops[OSD_OT_DESTROY],
1007                       oti->oti_declare_ops_cred[OSD_OT_DESTROY]);
1008                 CWARN("  attr_set: %u/%u, xattr_set: %u/%u\n",
1009                       oti->oti_declare_ops[OSD_OT_ATTR_SET],
1010                       oti->oti_declare_ops_cred[OSD_OT_ATTR_SET],
1011                       oti->oti_declare_ops[OSD_OT_XATTR_SET],
1012                       oti->oti_declare_ops_cred[OSD_OT_XATTR_SET]);
1013                 CWARN("  write: %u/%u, punch: %u/%u, quota %u/%u\n",
1014                       oti->oti_declare_ops[OSD_OT_WRITE],
1015                       oti->oti_declare_ops_cred[OSD_OT_WRITE],
1016                       oti->oti_declare_ops[OSD_OT_PUNCH],
1017                       oti->oti_declare_ops_cred[OSD_OT_PUNCH],
1018                       oti->oti_declare_ops[OSD_OT_QUOTA],
1019                       oti->oti_declare_ops_cred[OSD_OT_QUOTA]);
1020                 CWARN("  insert: %u/%u, delete: %u/%u\n",
1021                       oti->oti_declare_ops[OSD_OT_INSERT],
1022                       oti->oti_declare_ops_cred[OSD_OT_INSERT],
1023                       oti->oti_declare_ops[OSD_OT_DELETE],
1024                       oti->oti_declare_ops_cred[OSD_OT_DELETE]);
1025                 CWARN("  ref_add: %u/%u, ref_del: %u/%u\n",
1026                       oti->oti_declare_ops[OSD_OT_REF_ADD],
1027                       oti->oti_declare_ops_cred[OSD_OT_REF_ADD],
1028                       oti->oti_declare_ops[OSD_OT_REF_DEL],
1029                       oti->oti_declare_ops_cred[OSD_OT_REF_DEL]);
1030
1031                 if (last_credits != oh->ot_credits &&
1032                     time_after(jiffies, last_printed + 60 * HZ)) {
1033                         libcfs_debug_dumpstack(NULL);
1034                         last_credits = oh->ot_credits;
1035                         last_printed = jiffies;
1036                 }
1037                 /* XXX Limit the credits to 'max_transaction_buffers', and
1038                  *     let the underlying filesystem to catch the error if
1039                  *     we really need so many credits.
1040                  *
1041                  *     This should be removed when we can calculate the
1042                  *     credits precisely. */
1043                 oh->ot_credits = osd_journal(dev)->j_max_transaction_buffers;
1044         }
1045
1046         /*
1047          * XXX temporary stuff. Some abstraction layer should
1048          * be used.
1049          */
1050         jh = osd_journal_start_sb(osd_sb(dev), LDISKFS_HT_MISC, oh->ot_credits);
1051         osd_th_started(oh);
1052         if (!IS_ERR(jh)) {
1053                 oh->ot_handle = jh;
1054                 LASSERT(oti->oti_txns == 0);
1055                 lu_context_init(&th->th_ctx, th->th_tags);
1056                 lu_context_enter(&th->th_ctx);
1057
1058                 lu_device_get(&d->dd_lu_dev);
1059                 lu_ref_add_at(&d->dd_lu_dev.ld_reference, &oh->ot_dev_link,
1060                               "osd-tx", th);
1061                 oti->oti_txns++;
1062                 rc = 0;
1063         } else {
1064                 rc = PTR_ERR(jh);
1065         }
1066 out:
1067         RETURN(rc);
1068 }
1069
1070 static int osd_seq_exists(const struct lu_env *env,
1071                               struct osd_device *osd, obd_seq seq)
1072 {
1073         struct lu_seq_range     *range = &osd_oti_get(env)->oti_seq_range;
1074         struct seq_server_site  *ss = osd_seq_site(osd);
1075         int                     rc;
1076         ENTRY;
1077
1078         if (ss == NULL)
1079                 RETURN(1);
1080
1081         rc = osd_fld_lookup(env, osd, seq, range);
1082         if (rc != 0) {
1083                 if (rc != -ENOENT)
1084                         CERROR("%s: can't lookup FLD sequence "LPX64
1085                                ": rc = %d\n", osd_name(osd), seq, rc);
1086                 RETURN(0);
1087         }
1088
1089         RETURN(ss->ss_node_id == range->lsr_index);
1090 }
1091
1092 /*
1093  * Concurrency: shouldn't matter.
1094  */
1095 static int osd_trans_stop(const struct lu_env *env, struct dt_device *dt,
1096                           struct thandle *th)
1097 {
1098         int                     rc = 0;
1099         struct osd_thandle     *oh;
1100         struct osd_thread_info *oti = osd_oti_get(env);
1101         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
1102         struct qsd_instance    *qsd = oti->oti_dev->od_quota_slave;
1103         struct lquota_trans    *qtrans;
1104         ENTRY;
1105
1106         oh = container_of0(th, struct osd_thandle, ot_super);
1107
1108         qtrans = oh->ot_quota_trans;
1109         oh->ot_quota_trans = NULL;
1110
1111         if (oh->ot_handle != NULL) {
1112                 handle_t *hdl = oh->ot_handle;
1113
1114                 /*
1115                  * add commit callback
1116                  * notice we don't do this in osd_trans_start()
1117                  * as underlying transaction can change during truncate
1118                  */
1119                 ldiskfs_journal_callback_add(hdl, osd_trans_commit_cb,
1120                                          &oh->ot_jcb);
1121
1122                 LASSERT(oti->oti_txns == 1);
1123                 oti->oti_txns--;
1124                 rc = dt_txn_hook_stop(env, th);
1125                 if (rc != 0)
1126                         CERROR("Failure in transaction hook: %d\n", rc);
1127
1128                 /* hook functions might modify th_sync */
1129                 hdl->h_sync = th->th_sync;
1130
1131                 oh->ot_handle = NULL;
1132                 OSD_CHECK_SLOW_TH(oh, oti->oti_dev,
1133                                   rc = ldiskfs_journal_stop(hdl));
1134                 if (rc != 0)
1135                         CERROR("Failure to stop transaction: %d\n", rc);
1136         } else {
1137                 thandle_put(&oh->ot_super);
1138         }
1139
1140         /* inform the quota slave device that the transaction is stopping */
1141         qsd_op_end(env, qsd, qtrans);
1142
1143         /* as we want IO to journal and data IO be concurrent, we don't block
1144          * awaiting data IO completion in osd_do_bio(), instead we wait here
1145          * once transaction is submitted to the journal. all reqular requests
1146          * don't do direct IO (except read/write), thus this wait_event becomes
1147          * no-op for them.
1148          *
1149          * IMPORTANT: we have to wait till any IO submited by the thread is
1150          * completed otherwise iobuf may be corrupted by different request
1151          */
1152         wait_event(iobuf->dr_wait,
1153                        atomic_read(&iobuf->dr_numreqs) == 0);
1154         if (!rc)
1155                 rc = iobuf->dr_error;
1156
1157         RETURN(rc);
1158 }
1159
1160 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
1161 {
1162         struct osd_thandle *oh = container_of0(th, struct osd_thandle,
1163                                                ot_super);
1164
1165         LASSERT(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC);
1166         LASSERT(&dcb->dcb_func != NULL);
1167         cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
1168
1169         return 0;
1170 }
1171
1172 /*
1173  * Called just before object is freed. Releases all resources except for
1174  * object itself (that is released by osd_object_free()).
1175  *
1176  * Concurrency: no concurrent access is possible that late in object
1177  * life-cycle.
1178  */
1179 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
1180 {
1181         struct osd_object *obj   = osd_obj(l);
1182         struct inode      *inode = obj->oo_inode;
1183
1184         LINVRNT(osd_invariant(obj));
1185
1186         /*
1187          * If object is unlinked remove fid->ino mapping from object index.
1188          */
1189
1190         osd_index_fini(obj);
1191         if (inode != NULL) {
1192                 struct qsd_instance     *qsd = osd_obj2dev(obj)->od_quota_slave;
1193                 qid_t                    uid = inode->i_uid;
1194                 qid_t                    gid = inode->i_gid;
1195
1196                 iput(inode);
1197                 obj->oo_inode = NULL;
1198
1199                 if (qsd != NULL) {
1200                         struct osd_thread_info  *info = osd_oti_get(env);
1201                         struct lquota_id_info   *qi = &info->oti_qi;
1202
1203                         /* Release granted quota to master if necessary */
1204                         qi->lqi_id.qid_uid = uid;
1205                         qsd_op_adjust(env, qsd, &qi->lqi_id, USRQUOTA);
1206
1207                         qi->lqi_id.qid_uid = gid;
1208                         qsd_op_adjust(env, qsd, &qi->lqi_id, GRPQUOTA);
1209                 }
1210         }
1211 }
1212
1213 /*
1214  * Concurrency: ->loo_object_release() is called under site spin-lock.
1215  */
1216 static void osd_object_release(const struct lu_env *env,
1217                                struct lu_object *l)
1218 {
1219 }
1220
1221 /*
1222  * Concurrency: shouldn't matter.
1223  */
1224 static int osd_object_print(const struct lu_env *env, void *cookie,
1225                             lu_printer_t p, const struct lu_object *l)
1226 {
1227         struct osd_object *o = osd_obj(l);
1228         struct iam_descr  *d;
1229
1230         if (o->oo_dir != NULL)
1231                 d = o->oo_dir->od_container.ic_descr;
1232         else
1233                 d = NULL;
1234         return (*p)(env, cookie,
1235                     LUSTRE_OSD_LDISKFS_NAME"-object@%p(i:%p:%lu/%u)[%s]",
1236                     o, o->oo_inode,
1237                     o->oo_inode ? o->oo_inode->i_ino : 0UL,
1238                     o->oo_inode ? o->oo_inode->i_generation : 0,
1239                     d ? d->id_ops->id_name : "plain");
1240 }
1241
1242 #define GRANT_FOR_LOCAL_OIDS 32 /* 128kB for last_rcvd, quota files, ... */
1243
1244 /*
1245  * Concurrency: shouldn't matter.
1246  */
1247 int osd_statfs(const struct lu_env *env, struct dt_device *d,
1248                struct obd_statfs *sfs)
1249 {
1250         struct osd_device  *osd = osd_dt_dev(d);
1251         struct super_block *sb = osd_sb(osd);
1252         struct kstatfs     *ksfs;
1253         int result = 0;
1254
1255         if (unlikely(osd->od_mnt == NULL))
1256                 return -EINPROGRESS;
1257
1258         /* osd_lproc.c call this without env, allocate ksfs for that case */
1259         if (unlikely(env == NULL)) {
1260                 OBD_ALLOC_PTR(ksfs);
1261                 if (ksfs == NULL)
1262                         return -ENOMEM;
1263         } else {
1264                 ksfs = &osd_oti_get(env)->oti_ksfs;
1265         }
1266
1267         spin_lock(&osd->od_osfs_lock);
1268         result = sb->s_op->statfs(sb->s_root, ksfs);
1269         if (likely(result == 0)) { /* N.B. statfs can't really fail */
1270                 statfs_pack(sfs, ksfs);
1271                 if (sb->s_flags & MS_RDONLY)
1272                         sfs->os_state = OS_STATE_READONLY;
1273         }
1274
1275         spin_unlock(&osd->od_osfs_lock);
1276
1277         if (unlikely(env == NULL))
1278                 OBD_FREE_PTR(ksfs);
1279
1280         /* Reserve a small amount of space for local objects like last_rcvd,
1281          * llog, quota files, ... */
1282         if (sfs->os_bavail <= GRANT_FOR_LOCAL_OIDS) {
1283                 sfs->os_bavail = 0;
1284         } else {
1285                 sfs->os_bavail -= GRANT_FOR_LOCAL_OIDS;
1286                 /** Take out metadata overhead for indirect blocks */
1287                 sfs->os_bavail -= sfs->os_bavail >> (sb->s_blocksize_bits - 3);
1288         }
1289
1290         return result;
1291 }
1292
1293 /**
1294  * Estimate space needed for file creations. We assume the largest filename
1295  * which is 2^64 - 1, hence a filename of 20 chars.
1296  * This is 28 bytes per object which is 28MB for 1M objects ... no so bad.
1297  */
1298 #ifdef __LDISKFS_DIR_REC_LEN
1299 #define PER_OBJ_USAGE __LDISKFS_DIR_REC_LEN(20)
1300 #else
1301 #define PER_OBJ_USAGE LDISKFS_DIR_REC_LEN(20)
1302 #endif
1303
1304 /*
1305  * Concurrency: doesn't access mutable data.
1306  */
1307 static void osd_conf_get(const struct lu_env *env,
1308                          const struct dt_device *dev,
1309                          struct dt_device_param *param)
1310 {
1311         struct super_block *sb = osd_sb(osd_dt_dev(dev));
1312         int                ea_overhead;
1313
1314         /*
1315          * XXX should be taken from not-yet-existing fs abstraction layer.
1316          */
1317         param->ddp_max_name_len = LDISKFS_NAME_LEN;
1318         param->ddp_max_nlink    = LDISKFS_LINK_MAX;
1319         param->ddp_block_shift  = sb->s_blocksize_bits;
1320         param->ddp_mount_type     = LDD_MT_LDISKFS;
1321         param->ddp_maxbytes       = sb->s_maxbytes;
1322         /* Overhead estimate should be fairly accurate, so we really take a tiny
1323          * error margin which also avoids fragmenting the filesystem too much */
1324         param->ddp_grant_reserved = 2; /* end up to be 1.9% after conversion */
1325         /* inode are statically allocated, so per-inode space consumption
1326          * is the space consumed by the directory entry */
1327         param->ddp_inodespace     = PER_OBJ_USAGE;
1328         /* per-fragment overhead to be used by the client code */
1329         param->ddp_grant_frag     = 6 * LDISKFS_BLOCK_SIZE(sb);
1330         param->ddp_mntopts      = 0;
1331         if (test_opt(sb, XATTR_USER))
1332                 param->ddp_mntopts |= MNTOPT_USERXATTR;
1333         if (test_opt(sb, POSIX_ACL))
1334                 param->ddp_mntopts |= MNTOPT_ACL;
1335
1336         /* LOD might calculate the max stripe count based on max_ea_size,
1337          * so we need take account in the overhead as well,
1338          * xattr_header + magic + xattr_entry_head */
1339         ea_overhead = sizeof(struct ldiskfs_xattr_header) + sizeof(__u32) +
1340                       LDISKFS_XATTR_LEN(XATTR_NAME_MAX_LEN);
1341
1342 #if defined(LDISKFS_FEATURE_INCOMPAT_EA_INODE)
1343         if (LDISKFS_HAS_INCOMPAT_FEATURE(sb, LDISKFS_FEATURE_INCOMPAT_EA_INODE))
1344                 param->ddp_max_ea_size = LDISKFS_XATTR_MAX_LARGE_EA_SIZE -
1345                                                                 ea_overhead;
1346         else
1347 #endif
1348                 param->ddp_max_ea_size = sb->s_blocksize - ea_overhead;
1349 }
1350
1351 /*
1352  * Concurrency: shouldn't matter.
1353  */
1354 static int osd_sync(const struct lu_env *env, struct dt_device *d)
1355 {
1356         CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_LDISKFS_NAME);
1357         return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
1358 }
1359
1360 /**
1361  * Start commit for OSD device.
1362  *
1363  * An implementation of dt_commit_async method for OSD device.
1364  * Asychronously starts underlayng fs sync and thereby a transaction
1365  * commit.
1366  *
1367  * \param env environment
1368  * \param d dt device
1369  *
1370  * \see dt_device_operations
1371  */
1372 static int osd_commit_async(const struct lu_env *env,
1373                             struct dt_device *d)
1374 {
1375         struct super_block *s = osd_sb(osd_dt_dev(d));
1376         ENTRY;
1377
1378         CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_LDISKFS_NAME);
1379         RETURN(s->s_op->sync_fs(s, 0));
1380 }
1381
1382 /*
1383  * Concurrency: shouldn't matter.
1384  */
1385
1386 static int osd_ro(const struct lu_env *env, struct dt_device *d)
1387 {
1388         struct super_block *sb = osd_sb(osd_dt_dev(d));
1389         struct block_device *dev = sb->s_bdev;
1390 #ifdef HAVE_DEV_SET_RDONLY
1391         struct block_device *jdev = LDISKFS_SB(sb)->journal_bdev;
1392         int rc = 0;
1393 #else
1394         int rc = -EOPNOTSUPP;
1395 #endif
1396         ENTRY;
1397
1398 #ifdef HAVE_DEV_SET_RDONLY
1399         CERROR("*** setting %s read-only ***\n", osd_dt_dev(d)->od_svname);
1400
1401         if (jdev && (jdev != dev)) {
1402                 CDEBUG(D_IOCTL | D_HA, "set journal dev %lx rdonly\n",
1403                        (long)jdev);
1404                 dev_set_rdonly(jdev);
1405         }
1406         CDEBUG(D_IOCTL | D_HA, "set dev %lx rdonly\n", (long)dev);
1407         dev_set_rdonly(dev);
1408 #else
1409         CERROR("%s: %lx CANNOT BE SET READONLY: rc = %d\n",
1410                osd_dt_dev(d)->od_svname, (long)dev, rc);
1411 #endif
1412         RETURN(rc);
1413 }
1414
1415 /*
1416  * Concurrency: serialization provided by callers.
1417  */
1418 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
1419                               int mode, unsigned long timeout, __u32 alg,
1420                               struct lustre_capa_key *keys)
1421 {
1422         struct osd_device *dev = osd_dt_dev(d);
1423         ENTRY;
1424
1425         dev->od_fl_capa = mode;
1426         dev->od_capa_timeout = timeout;
1427         dev->od_capa_alg = alg;
1428         dev->od_capa_keys = keys;
1429         RETURN(0);
1430 }
1431
1432 /**
1433  * Note: we do not count into QUOTA here.
1434  * If we mount with --data_journal we may need more.
1435  */
1436 const int osd_dto_credits_noquota[DTO_NR] = {
1437         /**
1438          * Insert.
1439          * INDEX_EXTRA_TRANS_BLOCKS(8) +
1440          * SINGLEDATA_TRANS_BLOCKS(8)
1441          * XXX Note: maybe iam need more, since iam have more level than
1442          *           EXT3 htree.
1443          */
1444         [DTO_INDEX_INSERT]  = 16,
1445         /**
1446          * Delete
1447          * just modify a single entry, probably merge few within a block
1448          */
1449         [DTO_INDEX_DELETE]  = 1,
1450         /**
1451          * Used for OI scrub
1452          */
1453         [DTO_INDEX_UPDATE]  = 16,
1454         /**
1455          * 4(inode, inode bits, groups, GDT)
1456          *   notice: OI updates are counted separately with DTO_INDEX_INSERT
1457          */
1458         [DTO_OBJECT_CREATE] = 4,
1459         /**
1460          * 4(inode, inode bits, groups, GDT)
1461          *   notice: OI updates are counted separately with DTO_INDEX_DELETE
1462          */
1463         [DTO_OBJECT_DELETE] = 4,
1464         /**
1465          * Attr set credits (inode)
1466          */
1467         [DTO_ATTR_SET_BASE] = 1,
1468         /**
1469          * Xattr set. The same as xattr of EXT3.
1470          * DATA_TRANS_BLOCKS(14)
1471          * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
1472          * are also counted in. Do not know why?
1473          */
1474         [DTO_XATTR_SET]     = 14,
1475         /**
1476          * credits for inode change during write.
1477          */
1478         [DTO_WRITE_BASE]    = 3,
1479         /**
1480          * credits for single block write.
1481          */
1482         [DTO_WRITE_BLOCK]   = 14,
1483         /**
1484          * Attr set credits for chown.
1485          * This is extra credits for setattr, and it is null without quota
1486          */
1487         [DTO_ATTR_SET_CHOWN] = 0
1488 };
1489
1490 static const struct dt_device_operations osd_dt_ops = {
1491         .dt_root_get       = osd_root_get,
1492         .dt_statfs         = osd_statfs,
1493         .dt_trans_create   = osd_trans_create,
1494         .dt_trans_start    = osd_trans_start,
1495         .dt_trans_stop     = osd_trans_stop,
1496         .dt_trans_cb_add   = osd_trans_cb_add,
1497         .dt_conf_get       = osd_conf_get,
1498         .dt_sync           = osd_sync,
1499         .dt_ro             = osd_ro,
1500         .dt_commit_async   = osd_commit_async,
1501         .dt_init_capa_ctxt = osd_init_capa_ctxt,
1502 };
1503
1504 static void osd_object_read_lock(const struct lu_env *env,
1505                                  struct dt_object *dt, unsigned role)
1506 {
1507         struct osd_object *obj = osd_dt_obj(dt);
1508         struct osd_thread_info *oti = osd_oti_get(env);
1509
1510         LINVRNT(osd_invariant(obj));
1511
1512         LASSERT(obj->oo_owner != env);
1513         down_read_nested(&obj->oo_sem, role);
1514
1515         LASSERT(obj->oo_owner == NULL);
1516         oti->oti_r_locks++;
1517 }
1518
1519 static void osd_object_write_lock(const struct lu_env *env,
1520                                   struct dt_object *dt, unsigned role)
1521 {
1522         struct osd_object *obj = osd_dt_obj(dt);
1523         struct osd_thread_info *oti = osd_oti_get(env);
1524
1525         LINVRNT(osd_invariant(obj));
1526
1527         LASSERT(obj->oo_owner != env);
1528         down_write_nested(&obj->oo_sem, role);
1529
1530         LASSERT(obj->oo_owner == NULL);
1531         obj->oo_owner = env;
1532         oti->oti_w_locks++;
1533 }
1534
1535 static void osd_object_read_unlock(const struct lu_env *env,
1536                                    struct dt_object *dt)
1537 {
1538         struct osd_object *obj = osd_dt_obj(dt);
1539         struct osd_thread_info *oti = osd_oti_get(env);
1540
1541         LINVRNT(osd_invariant(obj));
1542
1543         LASSERT(oti->oti_r_locks > 0);
1544         oti->oti_r_locks--;
1545         up_read(&obj->oo_sem);
1546 }
1547
1548 static void osd_object_write_unlock(const struct lu_env *env,
1549                                     struct dt_object *dt)
1550 {
1551         struct osd_object *obj = osd_dt_obj(dt);
1552         struct osd_thread_info *oti = osd_oti_get(env);
1553
1554         LINVRNT(osd_invariant(obj));
1555
1556         LASSERT(obj->oo_owner == env);
1557         LASSERT(oti->oti_w_locks > 0);
1558         oti->oti_w_locks--;
1559         obj->oo_owner = NULL;
1560         up_write(&obj->oo_sem);
1561 }
1562
1563 static int osd_object_write_locked(const struct lu_env *env,
1564                                    struct dt_object *dt)
1565 {
1566         struct osd_object *obj = osd_dt_obj(dt);
1567
1568         LINVRNT(osd_invariant(obj));
1569
1570         return obj->oo_owner == env;
1571 }
1572
1573 static int capa_is_sane(const struct lu_env *env,
1574                         struct osd_device *dev,
1575                         struct lustre_capa *capa,
1576                         struct lustre_capa_key *keys)
1577 {
1578         struct osd_thread_info *oti = osd_oti_get(env);
1579         struct lustre_capa *tcapa = &oti->oti_capa;
1580         struct obd_capa *oc;
1581         int i, rc = 0;
1582         ENTRY;
1583
1584         oc = capa_lookup(dev->od_capa_hash, capa, 0);
1585         if (oc) {
1586                 if (capa_is_expired(oc)) {
1587                         DEBUG_CAPA(D_ERROR, capa, "expired");
1588                         rc = -ESTALE;
1589                 }
1590                 capa_put(oc);
1591                 RETURN(rc);
1592         }
1593
1594         if (capa_is_expired_sec(capa)) {
1595                 DEBUG_CAPA(D_ERROR, capa, "expired");
1596                 RETURN(-ESTALE);
1597         }
1598
1599         spin_lock(&capa_lock);
1600         for (i = 0; i < 2; i++) {
1601                 if (keys[i].lk_keyid == capa->lc_keyid) {
1602                         oti->oti_capa_key = keys[i];
1603                         break;
1604                 }
1605         }
1606         spin_unlock(&capa_lock);
1607
1608         if (i == 2) {
1609                 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1610                 RETURN(-ESTALE);
1611         }
1612
1613         rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1614         if (rc)
1615                 RETURN(rc);
1616
1617         if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1618                 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1619                 RETURN(-EACCES);
1620         }
1621
1622         oc = capa_add(dev->od_capa_hash, capa);
1623         capa_put(oc);
1624
1625         RETURN(0);
1626 }
1627
1628 int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1629                     struct lustre_capa *capa, __u64 opc)
1630 {
1631         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1632         struct osd_device *osd = osd_dev(dt->do_lu.lo_dev);
1633         struct lu_capainfo *lci;
1634         int rc;
1635
1636         if (!osd->od_fl_capa)
1637                 return 0;
1638
1639         if (capa == BYPASS_CAPA)
1640                 return 0;
1641
1642         lci = lu_capainfo_get(env);
1643         if (unlikely(lci == NULL))
1644                 return 0;
1645
1646         if (lci->lci_auth == LC_ID_NONE)
1647                 return 0;
1648
1649         if (capa == NULL) {
1650                 CERROR("%s: no capability provided for FID "DFID": rc = %d\n",
1651                        osd_name(osd), PFID(fid), -EACCES);
1652                 return -EACCES;
1653         }
1654
1655         if (!lu_fid_eq(fid, &capa->lc_fid)) {
1656                 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1657                            PFID(fid));
1658                 return -EACCES;
1659         }
1660
1661         if (!capa_opc_supported(capa, opc)) {
1662                 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1663                 return -EACCES;
1664         }
1665
1666         rc = capa_is_sane(env, osd, capa, osd->od_capa_keys);
1667         if (rc != 0) {
1668                 DEBUG_CAPA(D_ERROR, capa, "insane: rc = %d", rc);
1669                 return -EACCES;
1670         }
1671
1672         return 0;
1673 }
1674
1675 static struct timespec *osd_inode_time(const struct lu_env *env,
1676                                        struct inode *inode, __u64 seconds)
1677 {
1678         struct osd_thread_info  *oti = osd_oti_get(env);
1679         struct timespec         *t   = &oti->oti_time;
1680
1681         t->tv_sec = seconds;
1682         t->tv_nsec = 0;
1683         *t = timespec_trunc(*t, inode->i_sb->s_time_gran);
1684         return t;
1685 }
1686
1687
1688 static void osd_inode_getattr(const struct lu_env *env,
1689                               struct inode *inode, struct lu_attr *attr)
1690 {
1691         attr->la_valid      |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
1692                                LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
1693                                LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE |
1694                                LA_TYPE;
1695
1696         attr->la_atime      = LTIME_S(inode->i_atime);
1697         attr->la_mtime      = LTIME_S(inode->i_mtime);
1698         attr->la_ctime      = LTIME_S(inode->i_ctime);
1699         attr->la_mode       = inode->i_mode;
1700         attr->la_size       = i_size_read(inode);
1701         attr->la_blocks     = inode->i_blocks;
1702         attr->la_uid        = inode->i_uid;
1703         attr->la_gid        = inode->i_gid;
1704         attr->la_flags      = LDISKFS_I(inode)->i_flags;
1705         attr->la_nlink      = inode->i_nlink;
1706         attr->la_rdev       = inode->i_rdev;
1707         attr->la_blksize    = 1 << inode->i_blkbits;
1708         attr->la_blkbits    = inode->i_blkbits;
1709 }
1710
1711 static int osd_attr_get(const struct lu_env *env,
1712                         struct dt_object *dt,
1713                         struct lu_attr *attr,
1714                         struct lustre_capa *capa)
1715 {
1716         struct osd_object *obj = osd_dt_obj(dt);
1717
1718         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1719         LINVRNT(osd_invariant(obj));
1720
1721         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1722                 return -EACCES;
1723
1724         spin_lock(&obj->oo_guard);
1725         osd_inode_getattr(env, obj->oo_inode, attr);
1726         spin_unlock(&obj->oo_guard);
1727         return 0;
1728 }
1729
1730 static int osd_declare_attr_set(const struct lu_env *env,
1731                                 struct dt_object *dt,
1732                                 const struct lu_attr *attr,
1733                                 struct thandle *handle)
1734 {
1735         struct osd_thandle     *oh;
1736         struct osd_object      *obj;
1737         struct osd_thread_info *info = osd_oti_get(env);
1738         struct lquota_id_info  *qi = &info->oti_qi;
1739         long long               bspace;
1740         int                     rc = 0;
1741         bool                    allocated;
1742         ENTRY;
1743
1744         LASSERT(dt != NULL);
1745         LASSERT(handle != NULL);
1746
1747         obj = osd_dt_obj(dt);
1748         LASSERT(osd_invariant(obj));
1749
1750         oh = container_of0(handle, struct osd_thandle, ot_super);
1751         LASSERT(oh->ot_handle == NULL);
1752
1753         osd_trans_declare_op(env, oh, OSD_OT_ATTR_SET,
1754                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
1755
1756         if (attr == NULL || obj->oo_inode == NULL)
1757                 RETURN(rc);
1758
1759         bspace   = obj->oo_inode->i_blocks;
1760         bspace <<= obj->oo_inode->i_sb->s_blocksize_bits;
1761         bspace   = toqb(bspace);
1762
1763         /* Changing ownership is always preformed by super user, it should not
1764          * fail with EDQUOT.
1765          *
1766          * We still need to call the osd_declare_qid() to calculate the journal
1767          * credits for updating quota accounting files and to trigger quota
1768          * space adjustment once the operation is completed.*/
1769         if ((attr->la_valid & LA_UID) != 0 &&
1770              attr->la_uid != obj->oo_inode->i_uid) {
1771                 qi->lqi_type = USRQUOTA;
1772
1773                 /* inode accounting */
1774                 qi->lqi_is_blk = false;
1775
1776                 /* one more inode for the new owner ... */
1777                 qi->lqi_id.qid_uid = attr->la_uid;
1778                 qi->lqi_space      = 1;
1779                 allocated = (attr->la_uid == 0) ? true : false;
1780                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1781                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1782                         rc = 0;
1783                 if (rc)
1784                         RETURN(rc);
1785
1786                 /* and one less inode for the current uid */
1787                 qi->lqi_id.qid_uid = obj->oo_inode->i_uid;
1788                 qi->lqi_space      = -1;
1789                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1790                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1791                         rc = 0;
1792                 if (rc)
1793                         RETURN(rc);
1794
1795                 /* block accounting */
1796                 qi->lqi_is_blk = true;
1797
1798                 /* more blocks for the new owner ... */
1799                 qi->lqi_id.qid_uid = attr->la_uid;
1800                 qi->lqi_space      = bspace;
1801                 allocated = (attr->la_uid == 0) ? true : false;
1802                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1803                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1804                         rc = 0;
1805                 if (rc)
1806                         RETURN(rc);
1807
1808                 /* and finally less blocks for the current owner */
1809                 qi->lqi_id.qid_uid = obj->oo_inode->i_uid;
1810                 qi->lqi_space      = -bspace;
1811                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1812                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1813                         rc = 0;
1814                 if (rc)
1815                         RETURN(rc);
1816         }
1817
1818         if (attr->la_valid & LA_GID &&
1819             attr->la_gid != obj->oo_inode->i_gid) {
1820                 qi->lqi_type = GRPQUOTA;
1821
1822                 /* inode accounting */
1823                 qi->lqi_is_blk = false;
1824
1825                 /* one more inode for the new group owner ... */
1826                 qi->lqi_id.qid_gid = attr->la_gid;
1827                 qi->lqi_space      = 1;
1828                 allocated = (attr->la_gid == 0) ? true : false;
1829                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1830                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1831                         rc = 0;
1832                 if (rc)
1833                         RETURN(rc);
1834
1835                 /* and one less inode for the current gid */
1836                 qi->lqi_id.qid_gid = obj->oo_inode->i_gid;
1837                 qi->lqi_space      = -1;
1838                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1839                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1840                         rc = 0;
1841                 if (rc)
1842                         RETURN(rc);
1843
1844                 /* block accounting */
1845                 qi->lqi_is_blk = true;
1846
1847                 /* more blocks for the new owner ... */
1848                 qi->lqi_id.qid_gid = attr->la_gid;
1849                 qi->lqi_space      = bspace;
1850                 allocated = (attr->la_gid == 0) ? true : false;
1851                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1852                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1853                         rc = 0;
1854                 if (rc)
1855                         RETURN(rc);
1856
1857                 /* and finally less blocks for the current owner */
1858                 qi->lqi_id.qid_gid = obj->oo_inode->i_gid;
1859                 qi->lqi_space      = -bspace;
1860                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1861                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1862                         rc = 0;
1863                 if (rc)
1864                         RETURN(rc);
1865         }
1866
1867         RETURN(rc);
1868 }
1869
1870 static int osd_inode_setattr(const struct lu_env *env,
1871                              struct inode *inode, const struct lu_attr *attr)
1872 {
1873         __u64 bits;
1874
1875         bits = attr->la_valid;
1876
1877         if (bits & LA_ATIME)
1878                 inode->i_atime  = *osd_inode_time(env, inode, attr->la_atime);
1879         if (bits & LA_CTIME)
1880                 inode->i_ctime  = *osd_inode_time(env, inode, attr->la_ctime);
1881         if (bits & LA_MTIME)
1882                 inode->i_mtime  = *osd_inode_time(env, inode, attr->la_mtime);
1883         if (bits & LA_SIZE) {
1884                 LDISKFS_I(inode)->i_disksize = attr->la_size;
1885                 i_size_write(inode, attr->la_size);
1886         }
1887
1888 #if 0
1889         /* OSD should not change "i_blocks" which is used by quota.
1890          * "i_blocks" should be changed by ldiskfs only. */
1891         if (bits & LA_BLOCKS)
1892                 inode->i_blocks = attr->la_blocks;
1893 #endif
1894         if (bits & LA_MODE)
1895                 inode->i_mode   = (inode->i_mode & S_IFMT) |
1896                         (attr->la_mode & ~S_IFMT);
1897         if (bits & LA_UID)
1898                 inode->i_uid    = attr->la_uid;
1899         if (bits & LA_GID)
1900                 inode->i_gid    = attr->la_gid;
1901         if (bits & LA_NLINK)
1902                 set_nlink(inode, attr->la_nlink);
1903         if (bits & LA_RDEV)
1904                 inode->i_rdev   = attr->la_rdev;
1905
1906         if (bits & LA_FLAGS) {
1907                 /* always keep S_NOCMTIME */
1908                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
1909                                  S_NOCMTIME;
1910         }
1911         return 0;
1912 }
1913
1914 static int osd_quota_transfer(struct inode *inode, const struct lu_attr *attr)
1915 {
1916         if ((attr->la_valid & LA_UID && attr->la_uid != inode->i_uid) ||
1917             (attr->la_valid & LA_GID && attr->la_gid != inode->i_gid)) {
1918                 struct iattr    iattr;
1919                 int             rc;
1920
1921                 iattr.ia_valid = 0;
1922                 if (attr->la_valid & LA_UID)
1923                         iattr.ia_valid |= ATTR_UID;
1924                 if (attr->la_valid & LA_GID)
1925                         iattr.ia_valid |= ATTR_GID;
1926                 iattr.ia_uid = attr->la_uid;
1927                 iattr.ia_gid = attr->la_gid;
1928
1929                 rc = ll_vfs_dq_transfer(inode, &iattr);
1930                 if (rc) {
1931                         CERROR("%s: quota transfer failed: rc = %d. Is quota "
1932                                "enforcement enabled on the ldiskfs filesystem?",
1933                                inode->i_sb->s_id, rc);
1934                         return rc;
1935                 }
1936         }
1937         return 0;
1938 }
1939
1940 static int osd_attr_set(const struct lu_env *env,
1941                         struct dt_object *dt,
1942                         const struct lu_attr *attr,
1943                         struct thandle *handle,
1944                         struct lustre_capa *capa)
1945 {
1946         struct osd_object *obj = osd_dt_obj(dt);
1947         struct inode      *inode;
1948         int rc;
1949
1950         LASSERT(handle != NULL);
1951         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1952         LASSERT(osd_invariant(obj));
1953
1954         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1955                 return -EACCES;
1956
1957         osd_trans_exec_op(env, handle, OSD_OT_ATTR_SET);
1958
1959         if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FID_MAPPING)) {
1960                 struct osd_thread_info  *oti  = osd_oti_get(env);
1961                 const struct lu_fid     *fid0 = lu_object_fid(&dt->do_lu);
1962                 struct lu_fid           *fid1 = &oti->oti_fid;
1963                 struct osd_inode_id     *id   = &oti->oti_id;
1964                 struct iam_path_descr   *ipd;
1965                 struct iam_container    *bag;
1966                 struct osd_thandle      *oh;
1967                 int                      rc;
1968
1969                 fid_cpu_to_be(fid1, fid0);
1970                 memset(id, 1, sizeof(*id));
1971                 bag = &osd_fid2oi(osd_dev(dt->do_lu.lo_dev),
1972                                   fid0)->oi_dir.od_container;
1973                 ipd = osd_idx_ipd_get(env, bag);
1974                 if (unlikely(ipd == NULL))
1975                         RETURN(-ENOMEM);
1976
1977                 oh = container_of0(handle, struct osd_thandle, ot_super);
1978                 rc = iam_update(oh->ot_handle, bag, (const struct iam_key *)fid1,
1979                                 (const struct iam_rec *)id, ipd);
1980                 osd_ipd_put(env, bag, ipd);
1981                 return(rc > 0 ? 0 : rc);
1982         }
1983
1984         inode = obj->oo_inode;
1985         ll_vfs_dq_init(inode);
1986
1987         rc = osd_quota_transfer(inode, attr);
1988         if (rc)
1989                 return rc;
1990
1991         spin_lock(&obj->oo_guard);
1992         rc = osd_inode_setattr(env, inode, attr);
1993         spin_unlock(&obj->oo_guard);
1994
1995         if (!rc)
1996                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
1997         return rc;
1998 }
1999
2000 struct dentry *osd_child_dentry_get(const struct lu_env *env,
2001                                     struct osd_object *obj,
2002                                     const char *name, const int namelen)
2003 {
2004         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
2005 }
2006
2007 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
2008                       umode_t mode, struct dt_allocation_hint *hint,
2009                       struct thandle *th)
2010 {
2011         int result;
2012         struct osd_device  *osd = osd_obj2dev(obj);
2013         struct osd_thandle *oth;
2014         struct dt_object   *parent = NULL;
2015         struct inode       *inode;
2016
2017         LINVRNT(osd_invariant(obj));
2018         LASSERT(obj->oo_inode == NULL);
2019         LASSERT(obj->oo_hl_head == NULL);
2020
2021         if (S_ISDIR(mode) && ldiskfs_pdo) {
2022                 obj->oo_hl_head =ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
2023                 if (obj->oo_hl_head == NULL)
2024                         return -ENOMEM;
2025         }
2026
2027         oth = container_of(th, struct osd_thandle, ot_super);
2028         LASSERT(oth->ot_handle->h_transaction != NULL);
2029
2030         if (hint && hint->dah_parent)
2031                 parent = hint->dah_parent;
2032
2033         inode = ldiskfs_create_inode(oth->ot_handle,
2034                                      parent ? osd_dt_obj(parent)->oo_inode :
2035                                               osd_sb(osd)->s_root->d_inode,
2036                                      mode);
2037         if (!IS_ERR(inode)) {
2038                 /* Do not update file c/mtime in ldiskfs.
2039                  * NB: don't need any lock because no contention at this
2040                  * early stage */
2041                 inode->i_flags |= S_NOCMTIME;
2042
2043                 /* For new created object, it must be consistent,
2044                  * and it is unnecessary to scrub against it. */
2045                 ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
2046                 obj->oo_inode = inode;
2047                 result = 0;
2048         } else {
2049                 if (obj->oo_hl_head != NULL) {
2050                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
2051                         obj->oo_hl_head = NULL;
2052                 }
2053                 result = PTR_ERR(inode);
2054         }
2055         LINVRNT(osd_invariant(obj));
2056         return result;
2057 }
2058
2059 enum {
2060         OSD_NAME_LEN = 255
2061 };
2062
2063 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
2064                      struct lu_attr *attr,
2065                      struct dt_allocation_hint *hint,
2066                      struct dt_object_format *dof,
2067                      struct thandle *th)
2068 {
2069         int result;
2070         struct osd_thandle *oth;
2071         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
2072
2073         LASSERT(S_ISDIR(attr->la_mode));
2074
2075         oth = container_of(th, struct osd_thandle, ot_super);
2076         LASSERT(oth->ot_handle->h_transaction != NULL);
2077         result = osd_mkfile(info, obj, mode, hint, th);
2078
2079         return result;
2080 }
2081
2082 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
2083                         struct lu_attr *attr,
2084                         struct dt_allocation_hint *hint,
2085                         struct dt_object_format *dof,
2086                         struct thandle *th)
2087 {
2088         int result;
2089         struct osd_thandle *oth;
2090         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
2091
2092         __u32 mode = (attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX));
2093
2094         LASSERT(S_ISREG(attr->la_mode));
2095
2096         oth = container_of(th, struct osd_thandle, ot_super);
2097         LASSERT(oth->ot_handle->h_transaction != NULL);
2098
2099         result = osd_mkfile(info, obj, mode, hint, th);
2100         if (result == 0) {
2101                 LASSERT(obj->oo_inode != NULL);
2102                 if (feat->dif_flags & DT_IND_VARKEY)
2103                         result = iam_lvar_create(obj->oo_inode,
2104                                                  feat->dif_keysize_max,
2105                                                  feat->dif_ptrsize,
2106                                                  feat->dif_recsize_max,
2107                                                  oth->ot_handle);
2108                 else
2109                         result = iam_lfix_create(obj->oo_inode,
2110                                                  feat->dif_keysize_max,
2111                                                  feat->dif_ptrsize,
2112                                                  feat->dif_recsize_max,
2113                                                  oth->ot_handle);
2114
2115         }
2116         return result;
2117 }
2118
2119 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
2120                      struct lu_attr *attr,
2121                      struct dt_allocation_hint *hint,
2122                      struct dt_object_format *dof,
2123                      struct thandle *th)
2124 {
2125         LASSERT(S_ISREG(attr->la_mode));
2126         return osd_mkfile(info, obj, (attr->la_mode &
2127                                (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
2128 }
2129
2130 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
2131                      struct lu_attr *attr,
2132                      struct dt_allocation_hint *hint,
2133                      struct dt_object_format *dof,
2134                      struct thandle *th)
2135 {
2136         LASSERT(S_ISLNK(attr->la_mode));
2137         return osd_mkfile(info, obj, (attr->la_mode &
2138                               (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
2139 }
2140
2141 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
2142                      struct lu_attr *attr,
2143                      struct dt_allocation_hint *hint,
2144                      struct dt_object_format *dof,
2145                      struct thandle *th)
2146 {
2147         umode_t mode = attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX);
2148         int result;
2149
2150         LINVRNT(osd_invariant(obj));
2151         LASSERT(obj->oo_inode == NULL);
2152         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
2153                 S_ISFIFO(mode) || S_ISSOCK(mode));
2154
2155         result = osd_mkfile(info, obj, mode, hint, th);
2156         if (result == 0) {
2157                 LASSERT(obj->oo_inode != NULL);
2158                 /*
2159                  * This inode should be marked dirty for i_rdev.  Currently
2160                  * that is done in the osd_attr_init().
2161                  */
2162                 init_special_inode(obj->oo_inode, obj->oo_inode->i_mode,
2163                                    attr->la_rdev);
2164         }
2165         LINVRNT(osd_invariant(obj));
2166         return result;
2167 }
2168
2169 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
2170                               struct lu_attr *,
2171                               struct dt_allocation_hint *hint,
2172                               struct dt_object_format *dof,
2173                               struct thandle *);
2174
2175 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
2176 {
2177         osd_obj_type_f result;
2178
2179         switch (type) {
2180         case DFT_DIR:
2181                 result = osd_mkdir;
2182                 break;
2183         case DFT_REGULAR:
2184                 result = osd_mkreg;
2185                 break;
2186         case DFT_SYM:
2187                 result = osd_mksym;
2188                 break;
2189         case DFT_NODE:
2190                 result = osd_mknod;
2191                 break;
2192         case DFT_INDEX:
2193                 result = osd_mk_index;
2194                 break;
2195
2196         default:
2197                 LBUG();
2198                 break;
2199         }
2200         return result;
2201 }
2202
2203
2204 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
2205                         struct dt_object *parent, struct dt_object *child,
2206                         umode_t child_mode)
2207 {
2208         LASSERT(ah);
2209
2210         ah->dah_parent = parent;
2211         ah->dah_mode = child_mode;
2212 }
2213
2214 static void osd_attr_init(struct osd_thread_info *info, struct osd_object *obj,
2215                           struct lu_attr *attr, struct dt_object_format *dof)
2216 {
2217         struct inode   *inode = obj->oo_inode;
2218         __u64           valid = attr->la_valid;
2219         int             result;
2220
2221         attr->la_valid &= ~(LA_TYPE | LA_MODE);
2222
2223         if (dof->dof_type != DFT_NODE)
2224                 attr->la_valid &= ~LA_RDEV;
2225         if ((valid & LA_ATIME) && (attr->la_atime == LTIME_S(inode->i_atime)))
2226                 attr->la_valid &= ~LA_ATIME;
2227         if ((valid & LA_CTIME) && (attr->la_ctime == LTIME_S(inode->i_ctime)))
2228                 attr->la_valid &= ~LA_CTIME;
2229         if ((valid & LA_MTIME) && (attr->la_mtime == LTIME_S(inode->i_mtime)))
2230                 attr->la_valid &= ~LA_MTIME;
2231
2232         result = osd_quota_transfer(inode, attr);
2233         if (result)
2234                 return;
2235
2236         if (attr->la_valid != 0) {
2237                 result = osd_inode_setattr(info->oti_env, inode, attr);
2238                 /*
2239                  * The osd_inode_setattr() should always succeed here.  The
2240                  * only error that could be returned is EDQUOT when we are
2241                  * trying to change the UID or GID of the inode. However, this
2242                  * should not happen since quota enforcement is no longer
2243                  * enabled on ldiskfs (lquota takes care of it).
2244                  */
2245                 LASSERTF(result == 0, "%d", result);
2246                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2247         }
2248
2249         attr->la_valid = valid;
2250 }
2251
2252 /**
2253  * Helper function for osd_object_create()
2254  *
2255  * \retval 0, on success
2256  */
2257 static int __osd_object_create(struct osd_thread_info *info,
2258                                struct osd_object *obj, struct lu_attr *attr,
2259                                struct dt_allocation_hint *hint,
2260                                struct dt_object_format *dof,
2261                                struct thandle *th)
2262 {
2263         int     result;
2264         __u32   umask;
2265
2266         /* we drop umask so that permissions we pass are not affected */
2267         umask = current->fs->umask;
2268         current->fs->umask = 0;
2269
2270         result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof,
2271                                                   th);
2272         if (result == 0) {
2273                 osd_attr_init(info, obj, attr, dof);
2274                 osd_object_init0(obj);
2275                 /* bz 24037 */
2276                 if (obj->oo_inode && (obj->oo_inode->i_state & I_NEW))
2277                         unlock_new_inode(obj->oo_inode);
2278         }
2279
2280         /* restore previous umask value */
2281         current->fs->umask = umask;
2282
2283         return result;
2284 }
2285
2286 /**
2287  * Helper function for osd_object_create()
2288  *
2289  * \retval 0, on success
2290  */
2291 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
2292                            const struct lu_fid *fid, struct thandle *th)
2293 {
2294         struct osd_thread_info *info = osd_oti_get(env);
2295         struct osd_inode_id    *id   = &info->oti_id;
2296         struct osd_device      *osd  = osd_obj2dev(obj);
2297         struct osd_thandle     *oh;
2298
2299         LASSERT(obj->oo_inode != NULL);
2300
2301         oh = container_of0(th, struct osd_thandle, ot_super);
2302         LASSERT(oh->ot_handle);
2303
2304         osd_id_gen(id, obj->oo_inode->i_ino, obj->oo_inode->i_generation);
2305         return osd_oi_insert(info, osd, fid, id, oh->ot_handle, OI_CHECK_FLD);
2306 }
2307
2308 int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
2309                    obd_seq seq, struct lu_seq_range *range)
2310 {
2311         struct seq_server_site  *ss = osd_seq_site(osd);
2312
2313         if (fid_seq_is_idif(seq)) {
2314                 fld_range_set_ost(range);
2315                 range->lsr_index = idif_ost_idx(seq);
2316                 return 0;
2317         }
2318
2319         if (!fid_seq_in_fldb(seq)) {
2320                 fld_range_set_mdt(range);
2321                 if (ss != NULL)
2322                         /* FIXME: If ss is NULL, it suppose not get lsr_index
2323                          * at all */
2324                         range->lsr_index = ss->ss_node_id;
2325                 return 0;
2326         }
2327
2328         LASSERT(ss != NULL);
2329         fld_range_set_any(range);
2330         /* OSD will only do local fld lookup */
2331         return fld_local_lookup(env, ss->ss_server_fld, seq, range);
2332 }
2333
2334 /*
2335  * Concurrency: no external locking is necessary.
2336  */
2337 static int osd_declare_object_create(const struct lu_env *env,
2338                                      struct dt_object *dt,
2339                                      struct lu_attr *attr,
2340                                      struct dt_allocation_hint *hint,
2341                                      struct dt_object_format *dof,
2342                                      struct thandle *handle)
2343 {
2344         struct osd_thandle      *oh;
2345         int                      rc;
2346         ENTRY;
2347
2348         LASSERT(handle != NULL);
2349
2350         oh = container_of0(handle, struct osd_thandle, ot_super);
2351         LASSERT(oh->ot_handle == NULL);
2352
2353         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
2354                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
2355         /* Reuse idle OI block may cause additional one OI block
2356          * to be changed. */
2357         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2358                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
2359
2360         /* If this is directory, then we expect . and .. to be inserted as
2361          * well. The one directory block always needs to be created for the
2362          * directory, so we could use DTO_WRITE_BASE here (GDT, block bitmap,
2363          * block), there is no danger of needing a tree for the first block.
2364          */
2365         if (attr && S_ISDIR(attr->la_mode)) {
2366                 osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2367                                      osd_dto_credits_noquota[DTO_WRITE_BASE]);
2368                 osd_trans_declare_op(env, oh, OSD_OT_INSERT, 0);
2369         }
2370
2371         if (!attr)
2372                 RETURN(0);
2373
2374         rc = osd_declare_inode_qid(env, attr->la_uid, attr->la_gid, 1, oh,
2375                                    false, false, NULL, false);
2376         if (rc != 0)
2377                 RETURN(rc);
2378
2379         RETURN(rc);
2380 }
2381
2382 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
2383                              struct lu_attr *attr,
2384                              struct dt_allocation_hint *hint,
2385                              struct dt_object_format *dof,
2386                              struct thandle *th)
2387 {
2388         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2389         struct osd_object      *obj    = osd_dt_obj(dt);
2390         struct osd_thread_info *info   = osd_oti_get(env);
2391         int result;
2392
2393         ENTRY;
2394
2395         LINVRNT(osd_invariant(obj));
2396         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2397         LASSERT(osd_write_locked(env, obj));
2398         LASSERT(th != NULL);
2399
2400         if (unlikely(fid_is_acct(fid)))
2401                 /* Quota files can't be created from the kernel any more,
2402                  * 'tune2fs -O quota' will take care of creating them */
2403                 RETURN(-EPERM);
2404
2405         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2406         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2407
2408         result = __osd_object_create(info, obj, attr, hint, dof, th);
2409         if (result == 0)
2410                 result = __osd_oi_insert(env, obj, fid, th);
2411
2412         LASSERT(ergo(result == 0,
2413                      dt_object_exists(dt) && !dt_object_remote(dt)));
2414
2415         LASSERT(osd_invariant(obj));
2416         RETURN(result);
2417 }
2418
2419 /**
2420  * Called to destroy on-disk representation of the object
2421  *
2422  * Concurrency: must be locked
2423  */
2424 static int osd_declare_object_destroy(const struct lu_env *env,
2425                                       struct dt_object *dt,
2426                                       struct thandle *th)
2427 {
2428         struct osd_object  *obj = osd_dt_obj(dt);
2429         struct inode       *inode = obj->oo_inode;
2430         struct osd_thandle *oh;
2431         int                 rc;
2432         ENTRY;
2433
2434         oh = container_of0(th, struct osd_thandle, ot_super);
2435         LASSERT(oh->ot_handle == NULL);
2436         LASSERT(inode);
2437
2438         osd_trans_declare_op(env, oh, OSD_OT_DESTROY,
2439                              osd_dto_credits_noquota[DTO_OBJECT_DELETE]);
2440         /* Recycle idle OI leaf may cause additional three OI blocks
2441          * to be changed. */
2442         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
2443                              osd_dto_credits_noquota[DTO_INDEX_DELETE] + 3);
2444         /* one less inode */
2445         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, -1, oh,
2446                                    false, true, NULL, false);
2447         if (rc)
2448                 RETURN(rc);
2449         /* data to be truncated */
2450         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0, oh,
2451                                    true, true, NULL, false);
2452         RETURN(rc);
2453 }
2454
2455 static int osd_object_destroy(const struct lu_env *env,
2456                               struct dt_object *dt,
2457                               struct thandle *th)
2458 {
2459         const struct lu_fid    *fid = lu_object_fid(&dt->do_lu);
2460         struct osd_object      *obj = osd_dt_obj(dt);
2461         struct inode           *inode = obj->oo_inode;
2462         struct osd_device      *osd = osd_obj2dev(obj);
2463         struct osd_thandle     *oh;
2464         int                     result;
2465         ENTRY;
2466
2467         oh = container_of0(th, struct osd_thandle, ot_super);
2468         LASSERT(oh->ot_handle);
2469         LASSERT(inode);
2470         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
2471
2472         if (unlikely(fid_is_acct(fid)))
2473                 RETURN(-EPERM);
2474
2475         if (S_ISDIR(inode->i_mode)) {
2476                 LASSERT(osd_inode_unlinked(inode) || inode->i_nlink == 1 ||
2477                         inode->i_nlink == 2);
2478                 /* it will check/delete the inode from remote parent,
2479                  * how to optimize it? unlink performance impaction XXX */
2480                 result = osd_delete_from_remote_parent(env, osd, obj, oh);
2481                 if (result != 0 && result != -ENOENT) {
2482                         CERROR("%s: delete inode "DFID": rc = %d\n",
2483                                osd_name(osd), PFID(fid), result);
2484                 }
2485                 spin_lock(&obj->oo_guard);
2486                 clear_nlink(inode);
2487                 spin_unlock(&obj->oo_guard);
2488                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2489         }
2490
2491         osd_trans_exec_op(env, th, OSD_OT_DESTROY);
2492
2493         result = osd_oi_delete(osd_oti_get(env), osd, fid, oh->ot_handle,
2494                                OI_CHECK_FLD);
2495
2496         /* XXX: add to ext3 orphan list */
2497         /* rc = ext3_orphan_add(handle_t *handle, struct inode *inode) */
2498
2499         /* not needed in the cache anymore */
2500         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
2501
2502         RETURN(0);
2503 }
2504
2505 /**
2506  * Put the fid into lustre_mdt_attrs, and then place the structure
2507  * inode's ea. This fid should not be altered during the life time
2508  * of the inode.
2509  *
2510  * \retval +ve, on success
2511  * \retval -ve, on error
2512  *
2513  * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
2514  */
2515 int osd_ea_fid_set(struct osd_thread_info *info, struct inode *inode,
2516                    const struct lu_fid *fid, __u32 compat, __u32 incompat)
2517 {
2518         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
2519         int                      rc;
2520         ENTRY;
2521
2522         if (OBD_FAIL_CHECK(OBD_FAIL_FID_INLMA))
2523                 RETURN(0);
2524
2525         lustre_lma_init(lma, fid, compat, incompat);
2526         lustre_lma_swab(lma);
2527
2528         rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma, sizeof(*lma),
2529                              XATTR_CREATE);
2530         /* LMA may already exist, but we need to check that all the
2531          * desired compat/incompat flags have been added. */
2532         if (unlikely(rc == -EEXIST)) {
2533                 if (compat == 0 && incompat == 0)
2534                         RETURN(0);
2535
2536                 rc = __osd_xattr_get(inode, &info->oti_obj_dentry,
2537                                      XATTR_NAME_LMA, info->oti_mdt_attrs_old,
2538                                      LMA_OLD_SIZE);
2539                 if (rc <= 0)
2540                         RETURN(-EINVAL);
2541
2542                 lustre_lma_swab(lma);
2543                 if (!(~lma->lma_compat & compat) &&
2544                     !(~lma->lma_incompat & incompat))
2545                         RETURN(0);
2546
2547                 lma->lma_compat |= compat;
2548                 lma->lma_incompat |= incompat;
2549                 lustre_lma_swab(lma);
2550                 rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma,
2551                                      sizeof(*lma), XATTR_REPLACE);
2552         }
2553
2554         RETURN(rc);
2555 }
2556
2557 /**
2558  * ldiskfs supports fid in dirent, it is passed in dentry->d_fsdata.
2559  * lustre 1.8 also uses d_fsdata for passing other info to ldiskfs.
2560  * To have compatilibility with 1.8 ldiskfs driver we need to have
2561  * magic number at start of fid data.
2562  * \ldiskfs_dentry_param is used only to pass fid from osd to ldiskfs.
2563  * its inmemory API.
2564  */
2565 void osd_get_ldiskfs_dirent_param(struct ldiskfs_dentry_param *param,
2566                                   const struct dt_rec *fid)
2567 {
2568         if (!fid_is_namespace_visible((const struct lu_fid *)fid) ||
2569             OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF)) {
2570                 param->edp_magic = 0;
2571                 return;
2572         }
2573
2574         param->edp_magic = LDISKFS_LUFID_MAGIC;
2575         param->edp_len =  sizeof(struct lu_fid) + 1;
2576         fid_cpu_to_be((struct lu_fid *)param->edp_data, (struct lu_fid *)fid);
2577 }
2578
2579 /**
2580  * Try to read the fid from inode ea into dt_rec.
2581  *
2582  * \param fid object fid.
2583  *
2584  * \retval 0 on success
2585  */
2586 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
2587                           __u32 ino, struct lu_fid *fid,
2588                           struct osd_inode_id *id)
2589 {
2590         struct osd_thread_info *info  = osd_oti_get(env);
2591         struct inode           *inode;
2592         ENTRY;
2593
2594         osd_id_gen(id, ino, OSD_OII_NOGEN);
2595         inode = osd_iget_fid(info, osd_obj2dev(obj), id, fid);
2596         if (IS_ERR(inode))
2597                 RETURN(PTR_ERR(inode));
2598
2599         iput(inode);
2600         RETURN(0);
2601 }
2602
2603 static int osd_add_dot_dotdot_internal(struct osd_thread_info *info,
2604                                         struct inode *dir,
2605                                         struct inode  *parent_dir,
2606                                         const struct dt_rec *dot_fid,
2607                                         const struct dt_rec *dot_dot_fid,
2608                                         struct osd_thandle *oth)
2609 {
2610         struct ldiskfs_dentry_param *dot_ldp;
2611         struct ldiskfs_dentry_param *dot_dot_ldp;
2612
2613         dot_dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp2;
2614         osd_get_ldiskfs_dirent_param(dot_dot_ldp, dot_dot_fid);
2615
2616         dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
2617         dot_ldp->edp_magic = 0;
2618         return ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir,
2619                                         dir, dot_ldp, dot_dot_ldp);
2620 }
2621
2622 /**
2623  * Create an local agent inode for remote entry
2624  */
2625 static struct inode *osd_create_local_agent_inode(const struct lu_env *env,
2626                                                   struct osd_device *osd,
2627                                                   struct osd_object *pobj,
2628                                                   const struct lu_fid *fid,
2629                                                   struct thandle *th)
2630 {
2631         struct osd_thread_info  *info = osd_oti_get(env);
2632         struct inode            *local;
2633         struct osd_thandle      *oh;
2634         int                     rc;
2635         ENTRY;
2636
2637         LASSERT(th);
2638         oh = container_of(th, struct osd_thandle, ot_super);
2639         LASSERT(oh->ot_handle->h_transaction != NULL);
2640
2641         /* FIXME: Insert index api needs to know the mode of
2642          * the remote object. Just use S_IFDIR for now */
2643         local = ldiskfs_create_inode(oh->ot_handle, pobj->oo_inode, S_IFDIR);
2644         if (IS_ERR(local)) {
2645                 CERROR("%s: create local error %d\n", osd_name(osd),
2646                        (int)PTR_ERR(local));
2647                 RETURN(local);
2648         }
2649
2650         /* Set special LMA flag for local agent inode */
2651         rc = osd_ea_fid_set(info, local, fid, 0, LMAI_AGENT);
2652         if (rc != 0) {
2653                 CERROR("%s: set LMA for "DFID" remote inode failed: rc = %d\n",
2654                        osd_name(osd), PFID(fid), rc);
2655                 RETURN(ERR_PTR(rc));
2656         }
2657
2658         rc = osd_add_dot_dotdot_internal(info, local, pobj->oo_inode,
2659                 (const struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
2660                 (const struct dt_rec *)fid, oh);
2661         if (rc != 0) {
2662                 CERROR("%s: "DFID" add dot dotdot error: rc = %d\n",
2663                         osd_name(osd), PFID(fid), rc);
2664                 RETURN(ERR_PTR(rc));
2665         }
2666
2667         RETURN(local);
2668 }
2669
2670 /**
2671  * Delete local agent inode for remote entry
2672  */
2673 static int osd_delete_local_agent_inode(const struct lu_env *env,
2674                                         struct osd_device *osd,
2675                                         const struct lu_fid *fid,
2676                                         __u32 ino, struct osd_thandle *oh)
2677 {
2678         struct osd_thread_info  *oti = osd_oti_get(env);
2679         struct osd_inode_id     *id = &oti->oti_id;
2680         struct inode            *inode;
2681         ENTRY;
2682
2683         id->oii_ino = le32_to_cpu(ino);
2684         id->oii_gen = OSD_OII_NOGEN;
2685         inode = osd_iget(oti, osd, id);
2686         if (IS_ERR(inode)) {
2687                 CERROR("%s: iget error "DFID" id %u:%u\n", osd_name(osd),
2688                        PFID(fid), id->oii_ino, id->oii_gen);
2689                 RETURN(PTR_ERR(inode));
2690         }
2691
2692         clear_nlink(inode);
2693         mark_inode_dirty(inode);
2694         CDEBUG(D_INODE, "%s: delete remote inode "DFID" %lu\n",
2695                 osd_name(osd), PFID(fid), inode->i_ino);
2696         iput(inode);
2697         RETURN(0);
2698 }
2699
2700 /**
2701  * OSD layer object create function for interoperability mode (b11826).
2702  * This is mostly similar to osd_object_create(). Only difference being, fid is
2703  * inserted into inode ea here.
2704  *
2705  * \retval   0, on success
2706  * \retval -ve, on error
2707  */
2708 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
2709                                 struct lu_attr *attr,
2710                                 struct dt_allocation_hint *hint,
2711                                 struct dt_object_format *dof,
2712                                 struct thandle *th)
2713 {
2714         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2715         struct osd_object      *obj    = osd_dt_obj(dt);
2716         struct osd_thread_info *info   = osd_oti_get(env);
2717         int                     result;
2718
2719         ENTRY;
2720
2721         LASSERT(osd_invariant(obj));
2722         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2723         LASSERT(osd_write_locked(env, obj));
2724         LASSERT(th != NULL);
2725
2726         if (unlikely(fid_is_acct(fid)))
2727                 /* Quota files can't be created from the kernel any more,
2728                  * 'tune2fs -O quota' will take care of creating them */
2729                 RETURN(-EPERM);
2730
2731         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2732         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2733
2734         result = __osd_object_create(info, obj, attr, hint, dof, th);
2735         if (result == 0)
2736                 result = osd_ea_fid_set(info, obj->oo_inode, fid,
2737                                 fid_is_on_ost(info, osd_obj2dev(obj),
2738                                               fid, OI_CHECK_FLD) ?
2739                                 LMAC_FID_ON_OST : 0, 0);
2740
2741         if (result == 0)
2742                 result = __osd_oi_insert(env, obj, fid, th);
2743
2744         LASSERT(ergo(result == 0,
2745                      dt_object_exists(dt) && !dt_object_remote(dt)));
2746         LINVRNT(osd_invariant(obj));
2747         RETURN(result);
2748 }
2749
2750 static int osd_declare_object_ref_add(const struct lu_env *env,
2751                                       struct dt_object *dt,
2752                                       struct thandle *handle)
2753 {
2754         struct osd_thandle       *oh;
2755
2756         /* it's possible that object doesn't exist yet */
2757         LASSERT(handle != NULL);
2758
2759         oh = container_of0(handle, struct osd_thandle, ot_super);
2760         LASSERT(oh->ot_handle == NULL);
2761
2762         osd_trans_declare_op(env, oh, OSD_OT_REF_ADD,
2763                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2764
2765         return 0;
2766 }
2767
2768 /*
2769  * Concurrency: @dt is write locked.
2770  */
2771 static int osd_object_ref_add(const struct lu_env *env,
2772                               struct dt_object *dt, struct thandle *th)
2773 {
2774         struct osd_object  *obj = osd_dt_obj(dt);
2775         struct inode       *inode = obj->oo_inode;
2776         struct osd_thandle *oh;
2777         int                 rc = 0;
2778
2779         LINVRNT(osd_invariant(obj));
2780         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2781         LASSERT(osd_write_locked(env, obj));
2782         LASSERT(th != NULL);
2783
2784         oh = container_of0(th, struct osd_thandle, ot_super);
2785         LASSERT(oh->ot_handle != NULL);
2786
2787         osd_trans_exec_op(env, th, OSD_OT_REF_ADD);
2788
2789         CDEBUG(D_INODE, DFID" increase nlink %d\n",
2790                PFID(lu_object_fid(&dt->do_lu)), inode->i_nlink);
2791         /*
2792          * The DIR_NLINK feature allows directories to exceed LDISKFS_LINK_MAX
2793          * (65000) subdirectories by storing "1" in i_nlink if the link count
2794          * would otherwise overflow. Directory tranversal tools understand
2795          * that (st_nlink == 1) indicates that the filesystem dose not track
2796          * hard links count on the directory, and will not abort subdirectory
2797          * scanning early once (st_nlink - 2) subdirs have been found.
2798          *
2799          * This also has to properly handle the case of inodes with nlink == 0
2800          * in case they are being linked into the PENDING directory
2801          */
2802         spin_lock(&obj->oo_guard);
2803         ldiskfs_inc_count(oh->ot_handle, inode);
2804         LASSERT(inode->i_nlink <= LDISKFS_LINK_MAX);
2805         spin_unlock(&obj->oo_guard);
2806
2807         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2808         LINVRNT(osd_invariant(obj));
2809
2810         return rc;
2811 }
2812
2813 static int osd_declare_object_ref_del(const struct lu_env *env,
2814                                       struct dt_object *dt,
2815                                       struct thandle *handle)
2816 {
2817         struct osd_thandle *oh;
2818
2819         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2820         LASSERT(handle != NULL);
2821
2822         oh = container_of0(handle, struct osd_thandle, ot_super);
2823         LASSERT(oh->ot_handle == NULL);
2824
2825         osd_trans_declare_op(env, oh, OSD_OT_REF_DEL,
2826                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2827
2828         return 0;
2829 }
2830
2831 /*
2832  * Concurrency: @dt is write locked.
2833  */
2834 static int osd_object_ref_del(const struct lu_env *env, struct dt_object *dt,
2835                               struct thandle *th)
2836 {
2837         struct osd_object       *obj = osd_dt_obj(dt);
2838         struct inode            *inode = obj->oo_inode;
2839         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
2840         struct osd_thandle      *oh;
2841
2842         LINVRNT(osd_invariant(obj));
2843         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2844         LASSERT(osd_write_locked(env, obj));
2845         LASSERT(th != NULL);
2846
2847         oh = container_of0(th, struct osd_thandle, ot_super);
2848         LASSERT(oh->ot_handle != NULL);
2849
2850         osd_trans_exec_op(env, th, OSD_OT_REF_DEL);
2851
2852         spin_lock(&obj->oo_guard);
2853         /* That can be result of upgrade from old Lustre version and
2854          * applied only to local files.  Just skip this ref_del call.
2855          * ext4_unlink() only treats this as a warning, don't LASSERT here.*/
2856         if (inode->i_nlink == 0) {
2857                 CDEBUG_LIMIT(fid_is_norm(lu_object_fid(&dt->do_lu)) ?
2858                              D_ERROR : D_INODE, "%s: nlink == 0 on "DFID
2859                              ", maybe an upgraded file? (LU-3915)\n",
2860                              osd_name(osd), PFID(lu_object_fid(&dt->do_lu)));
2861                 spin_unlock(&obj->oo_guard);
2862                 return 0;
2863         }
2864
2865         CDEBUG(D_INODE, DFID" decrease nlink %d\n",
2866                PFID(lu_object_fid(&dt->do_lu)), inode->i_nlink);
2867
2868         ldiskfs_dec_count(oh->ot_handle, inode);
2869         spin_unlock(&obj->oo_guard);
2870
2871         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2872         LINVRNT(osd_invariant(obj));
2873
2874         return 0;
2875 }
2876
2877 /*
2878  * Get the 64-bit version for an inode.
2879  */
2880 static int osd_object_version_get(const struct lu_env *env,
2881                                   struct dt_object *dt, dt_obj_version_t *ver)
2882 {
2883         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2884
2885         CDEBUG(D_INODE, "Get version "LPX64" for inode %lu\n",
2886                LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2887         *ver = LDISKFS_I(inode)->i_fs_version;
2888         return 0;
2889 }
2890
2891 /*
2892  * Concurrency: @dt is read locked.
2893  */
2894 static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
2895                          struct lu_buf *buf, const char *name,
2896                          struct lustre_capa *capa)
2897 {
2898         struct osd_object      *obj    = osd_dt_obj(dt);
2899         struct inode           *inode  = obj->oo_inode;
2900         struct osd_thread_info *info   = osd_oti_get(env);
2901         struct dentry          *dentry = &info->oti_obj_dentry;
2902
2903         /* version get is not real XATTR but uses xattr API */
2904         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2905                 /* for version we are just using xattr API but change inode
2906                  * field instead */
2907                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2908                 osd_object_version_get(env, dt, buf->lb_buf);
2909                 return sizeof(dt_obj_version_t);
2910         }
2911
2912         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2913         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
2914
2915         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2916                 return -EACCES;
2917
2918         return __osd_xattr_get(inode, dentry, name, buf->lb_buf, buf->lb_len);
2919 }
2920
2921
2922 static int osd_declare_xattr_set(const struct lu_env *env,
2923                                  struct dt_object *dt,
2924                                  const struct lu_buf *buf, const char *name,
2925                                  int fl, struct thandle *handle)
2926 {
2927         struct osd_thandle *oh;
2928         int credits;
2929
2930         LASSERT(handle != NULL);
2931
2932         oh = container_of0(handle, struct osd_thandle, ot_super);
2933         LASSERT(oh->ot_handle == NULL);
2934
2935         /* optimistic optimization: LMA is set first and usually fit inode */
2936         if (strcmp(name, XATTR_NAME_LMA) == 0) {
2937                 if (dt_object_exists(dt))
2938                         credits = 0;
2939                 else
2940                         credits = 1;
2941         } else if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2942                 credits = 1;
2943         } else {
2944                 struct osd_device  *osd = osd_dev(dt->do_lu.lo_dev);
2945                 struct super_block *sb = osd_sb(osd);
2946                 credits = osd_dto_credits_noquota[DTO_XATTR_SET];
2947                 if (buf && buf->lb_len > sb->s_blocksize) {
2948                         credits *= (buf->lb_len + sb->s_blocksize - 1) >>
2949                                         sb->s_blocksize_bits;
2950                 }
2951         }
2952
2953         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET, credits);
2954
2955         return 0;
2956 }
2957
2958 /*
2959  * Set the 64-bit version for object
2960  */
2961 static void osd_object_version_set(const struct lu_env *env,
2962                                    struct dt_object *dt,
2963                                    dt_obj_version_t *new_version)
2964 {
2965         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2966
2967         CDEBUG(D_INODE, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2968                *new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2969
2970         LDISKFS_I(inode)->i_fs_version = *new_version;
2971         /** Version is set after all inode operations are finished,
2972          *  so we should mark it dirty here */
2973         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2974 }
2975
2976 /*
2977  * Concurrency: @dt is write locked.
2978  */
2979 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2980                          const struct lu_buf *buf, const char *name, int fl,
2981                          struct thandle *handle, struct lustre_capa *capa)
2982 {
2983         struct osd_object      *obj      = osd_dt_obj(dt);
2984         struct inode           *inode    = obj->oo_inode;
2985         struct osd_thread_info *info     = osd_oti_get(env);
2986         int                     fs_flags = 0;
2987         ENTRY;
2988
2989         LASSERT(handle != NULL);
2990
2991         /* version set is not real XATTR */
2992         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2993                 /* for version we are just using xattr API but change inode
2994                  * field instead */
2995                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2996                 osd_object_version_set(env, dt, buf->lb_buf);
2997                 return sizeof(dt_obj_version_t);
2998         }
2999
3000         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
3001                 return -EACCES;
3002
3003         CDEBUG(D_INODE, DFID" set xattr '%s' with size %zd\n",
3004                PFID(lu_object_fid(&dt->do_lu)), name, buf->lb_len);
3005
3006         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3007         if (fl & LU_XATTR_REPLACE)
3008                 fs_flags |= XATTR_REPLACE;
3009
3010         if (fl & LU_XATTR_CREATE)
3011                 fs_flags |= XATTR_CREATE;
3012
3013         return __osd_xattr_set(info, inode, name, buf->lb_buf, buf->lb_len,
3014                                fs_flags);
3015 }
3016
3017 /*
3018  * Concurrency: @dt is read locked.
3019  */
3020 static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
3021                           struct lu_buf *buf, struct lustre_capa *capa)
3022 {
3023         struct osd_object      *obj    = osd_dt_obj(dt);
3024         struct inode           *inode  = obj->oo_inode;
3025         struct osd_thread_info *info   = osd_oti_get(env);
3026         struct dentry          *dentry = &info->oti_obj_dentry;
3027
3028         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3029         LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
3030
3031         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
3032                 return -EACCES;
3033
3034         dentry->d_inode = inode;
3035         dentry->d_sb = inode->i_sb;
3036         return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
3037 }
3038
3039 static int osd_declare_xattr_del(const struct lu_env *env,
3040                                  struct dt_object *dt, const char *name,
3041                                  struct thandle *handle)
3042 {
3043         struct osd_thandle *oh;
3044
3045         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3046         LASSERT(handle != NULL);
3047
3048         oh = container_of0(handle, struct osd_thandle, ot_super);
3049         LASSERT(oh->ot_handle == NULL);
3050
3051         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET,
3052                              osd_dto_credits_noquota[DTO_XATTR_SET]);
3053
3054         return 0;
3055 }
3056
3057 /*
3058  * Concurrency: @dt is write locked.
3059  */
3060 static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
3061                          const char *name, struct thandle *handle,
3062                          struct lustre_capa *capa)
3063 {
3064         struct osd_object      *obj    = osd_dt_obj(dt);
3065         struct inode           *inode  = obj->oo_inode;
3066         struct osd_thread_info *info   = osd_oti_get(env);
3067         struct dentry          *dentry = &info->oti_obj_dentry;
3068         int                     rc;
3069
3070         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3071         LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
3072         LASSERT(handle != NULL);
3073
3074         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
3075                 return -EACCES;
3076
3077         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3078
3079         ll_vfs_dq_init(inode);
3080         dentry->d_inode = inode;
3081         dentry->d_sb = inode->i_sb;
3082         rc = inode->i_op->removexattr(dentry, name);
3083         return rc;
3084 }
3085
3086 static struct obd_capa *osd_capa_get(const struct lu_env *env,
3087                                      struct dt_object *dt,
3088                                      struct lustre_capa *old, __u64 opc)
3089 {
3090         struct osd_thread_info *info = osd_oti_get(env);
3091         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
3092         struct osd_object *obj = osd_dt_obj(dt);
3093         struct osd_device *osd = osd_obj2dev(obj);
3094         struct lustre_capa_key *key = &info->oti_capa_key;
3095         struct lustre_capa *capa = &info->oti_capa;
3096         struct obd_capa *oc;
3097         struct lu_capainfo *lci;
3098         int rc;
3099         ENTRY;
3100
3101         if (!osd->od_fl_capa)
3102                 RETURN(ERR_PTR(-ENOENT));
3103
3104         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3105         LINVRNT(osd_invariant(obj));
3106
3107         /* renewal sanity check */
3108         if (old && osd_object_auth(env, dt, old, opc))
3109                 RETURN(ERR_PTR(-EACCES));
3110
3111         lci = lu_capainfo_get(env);
3112         if (unlikely(lci == NULL))
3113                 RETURN(ERR_PTR(-ENOENT));
3114
3115         switch (lci->lci_auth) {
3116         case LC_ID_NONE:
3117                 RETURN(NULL);
3118         case LC_ID_PLAIN:
3119                 capa->lc_uid = obj->oo_inode->i_uid;
3120                 capa->lc_gid = obj->oo_inode->i_gid;
3121                 capa->lc_flags = LC_ID_PLAIN;
3122                 break;
3123         case LC_ID_CONVERT: {
3124                 __u32 d[4], s[4];
3125
3126                 s[0] = obj->oo_inode->i_uid;
3127                 cfs_get_random_bytes(&(s[1]), sizeof(__u32));
3128                 s[2] = obj->oo_inode->i_gid;
3129                 cfs_get_random_bytes(&(s[3]), sizeof(__u32));
3130                 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
3131                 if (unlikely(rc))
3132                         RETURN(ERR_PTR(rc));
3133
3134                 capa->lc_uid   = ((__u64)d[1] << 32) | d[0];
3135                 capa->lc_gid   = ((__u64)d[3] << 32) | d[2];
3136                 capa->lc_flags = LC_ID_CONVERT;
3137                 break;
3138         }
3139         default:
3140                 RETURN(ERR_PTR(-EINVAL));
3141         }
3142
3143         capa->lc_fid = *fid;
3144         capa->lc_opc = opc;
3145         capa->lc_flags |= osd->od_capa_alg << 24;
3146         capa->lc_timeout = osd->od_capa_timeout;
3147         capa->lc_expiry = 0;
3148
3149         oc = capa_lookup(osd->od_capa_hash, capa, 1);
3150         if (oc) {
3151                 LASSERT(!capa_is_expired(oc));
3152                 RETURN(oc);
3153         }
3154
3155         spin_lock(&capa_lock);
3156         *key = osd->od_capa_keys[1];
3157         spin_unlock(&capa_lock);
3158
3159         capa->lc_keyid = key->lk_keyid;
3160         capa->lc_expiry = cfs_time_current_sec() + osd->od_capa_timeout;
3161
3162         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
3163         if (rc) {
3164                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
3165                 RETURN(ERR_PTR(rc));
3166         }
3167
3168         oc = capa_add(osd->od_capa_hash, capa);
3169         RETURN(oc);
3170 }
3171
3172 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
3173                            __u64 start, __u64 end)
3174 {
3175         struct osd_object       *obj    = osd_dt_obj(dt);
3176         struct inode            *inode  = obj->oo_inode;
3177         struct osd_thread_info  *info   = osd_oti_get(env);
3178         struct dentry           *dentry = &info->oti_obj_dentry;
3179         struct file             *file   = &info->oti_file;
3180         int                     rc;
3181
3182         ENTRY;
3183
3184         dentry->d_inode = inode;
3185         dentry->d_sb = inode->i_sb;
3186         file->f_dentry = dentry;
3187         file->f_mapping = inode->i_mapping;
3188         file->f_op = inode->i_fop;
3189         set_file_inode(file, inode);
3190
3191 #ifdef HAVE_FILE_FSYNC_4ARGS
3192         rc = file->f_op->fsync(file, start, end, 0);
3193 #elif defined(HAVE_FILE_FSYNC_2ARGS)
3194         mutex_lock(&inode->i_mutex);
3195         rc = file->f_op->fsync(file, 0);
3196         mutex_unlock(&inode->i_mutex);
3197 #else
3198         mutex_lock(&inode->i_mutex);
3199         rc = file->f_op->fsync(file, dentry, 0);
3200         mutex_unlock(&inode->i_mutex);
3201 #endif
3202
3203         RETURN(rc);
3204 }
3205
3206 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
3207                         void **data)
3208 {
3209         struct osd_object *obj = osd_dt_obj(dt);
3210         ENTRY;
3211
3212         *data = (void *)obj->oo_inode;
3213         RETURN(0);
3214 }
3215
3216 /*
3217  * Index operations.
3218  */
3219
3220 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
3221                            const struct dt_index_features *feat)
3222 {
3223         struct iam_descr *descr;
3224
3225         if (osd_object_is_root(o))
3226                 return feat == &dt_directory_features;
3227
3228         LASSERT(o->oo_dir != NULL);
3229
3230         descr = o->oo_dir->od_container.ic_descr;
3231         if (feat == &dt_directory_features) {
3232                 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
3233                         return 1;
3234                 else
3235                         return 0;
3236         } else {
3237                 return
3238                         feat->dif_keysize_min <= descr->id_key_size &&
3239                         descr->id_key_size <= feat->dif_keysize_max &&
3240                         feat->dif_recsize_min <= descr->id_rec_size &&
3241                         descr->id_rec_size <= feat->dif_recsize_max &&
3242                         !(feat->dif_flags & (DT_IND_VARKEY |
3243                                              DT_IND_VARREC | DT_IND_NONUNQ)) &&
3244                         ergo(feat->dif_flags & DT_IND_UPDATE,
3245                              1 /* XXX check that object (and file system) is
3246                                 * writable */);
3247         }
3248 }
3249
3250 static int osd_iam_container_init(const struct lu_env *env,
3251                                   struct osd_object *obj,
3252                                   struct osd_directory *dir)
3253 {
3254         struct iam_container *bag = &dir->od_container;
3255         int result;
3256
3257         result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
3258         if (result != 0)
3259                 return result;
3260
3261         result = iam_container_setup(bag);
3262         if (result == 0)
3263                 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
3264         else
3265                 iam_container_fini(bag);
3266
3267         return result;
3268 }
3269
3270
3271 /*
3272  * Concurrency: no external locking is necessary.
3273  */
3274 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
3275                          const struct dt_index_features *feat)
3276 {
3277         int                      result;
3278         int                      skip_iam = 0;
3279         struct osd_object       *obj = osd_dt_obj(dt);
3280
3281         LINVRNT(osd_invariant(obj));
3282
3283         if (osd_object_is_root(obj)) {
3284                 dt->do_index_ops = &osd_index_ea_ops;
3285                 result = 0;
3286         } else if (feat == &dt_directory_features) {
3287                 dt->do_index_ops = &osd_index_ea_ops;
3288                 if (obj->oo_inode != NULL && S_ISDIR(obj->oo_inode->i_mode))
3289                         result = 0;
3290                 else
3291                         result = -ENOTDIR;
3292                 skip_iam = 1;
3293         } else if (unlikely(feat == &dt_otable_features)) {
3294                 dt->do_index_ops = &osd_otable_ops;
3295                 return 0;
3296         } else if (unlikely(feat == &dt_acct_features)) {
3297                 dt->do_index_ops = &osd_acct_index_ops;
3298                 result = 0;
3299                 skip_iam = 1;
3300         } else if (!osd_has_index(obj)) {
3301                 struct osd_directory *dir;
3302
3303                 OBD_ALLOC_PTR(dir);
3304                 if (dir != NULL) {
3305
3306                         spin_lock(&obj->oo_guard);
3307                         if (obj->oo_dir == NULL)
3308                                 obj->oo_dir = dir;
3309                         else
3310                                 /*
3311                                  * Concurrent thread allocated container data.
3312                                  */
3313                                 OBD_FREE_PTR(dir);
3314                         spin_unlock(&obj->oo_guard);
3315                         /*
3316                          * Now, that we have container data, serialize its
3317                          * initialization.
3318                          */
3319                         down_write(&obj->oo_ext_idx_sem);
3320                         /*
3321                          * recheck under lock.
3322                          */
3323                         if (!osd_has_index(obj))
3324                                 result = osd_iam_container_init(env, obj, dir);
3325                         else
3326                                 result = 0;
3327                         up_write(&obj->oo_ext_idx_sem);
3328                 } else {
3329                         result = -ENOMEM;
3330                 }
3331         } else {
3332                 result = 0;
3333         }
3334
3335         if (result == 0 && skip_iam == 0) {
3336                 if (!osd_iam_index_probe(env, obj, feat))
3337                         result = -ENOTDIR;
3338         }
3339         LINVRNT(osd_invariant(obj));
3340
3341         if (result == 0 && is_quota_glb_feat(feat) &&
3342             fid_seq(lu_object_fid(&dt->do_lu)) == FID_SEQ_QUOTA_GLB)
3343                 result = osd_quota_migration(env, dt, feat);
3344
3345         return result;
3346 }
3347
3348 static int osd_otable_it_attr_get(const struct lu_env *env,
3349                                  struct dt_object *dt,
3350                                  struct lu_attr *attr,
3351                                  struct lustre_capa *capa)
3352 {
3353         attr->la_valid = 0;
3354         return 0;
3355 }
3356
3357 static const struct dt_object_operations osd_obj_ops = {
3358         .do_read_lock         = osd_object_read_lock,
3359         .do_write_lock        = osd_object_write_lock,
3360         .do_read_unlock       = osd_object_read_unlock,
3361         .do_write_unlock      = osd_object_write_unlock,
3362         .do_write_locked      = osd_object_write_locked,
3363         .do_attr_get          = osd_attr_get,
3364         .do_declare_attr_set  = osd_declare_attr_set,
3365         .do_attr_set          = osd_attr_set,
3366         .do_ah_init           = osd_ah_init,
3367         .do_declare_create    = osd_declare_object_create,
3368         .do_create            = osd_object_create,
3369         .do_declare_destroy   = osd_declare_object_destroy,
3370         .do_destroy           = osd_object_destroy,
3371         .do_index_try         = osd_index_try,
3372         .do_declare_ref_add   = osd_declare_object_ref_add,
3373         .do_ref_add           = osd_object_ref_add,
3374         .do_declare_ref_del   = osd_declare_object_ref_del,
3375         .do_ref_del           = osd_object_ref_del,
3376         .do_xattr_get         = osd_xattr_get,
3377         .do_declare_xattr_set = osd_declare_xattr_set,
3378         .do_xattr_set         = osd_xattr_set,
3379         .do_declare_xattr_del = osd_declare_xattr_del,
3380         .do_xattr_del         = osd_xattr_del,
3381         .do_xattr_list        = osd_xattr_list,
3382         .do_capa_get          = osd_capa_get,
3383         .do_object_sync       = osd_object_sync,
3384         .do_data_get          = osd_data_get,
3385 };
3386
3387 /**
3388  * dt_object_operations for interoperability mode
3389  * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
3390  */
3391 static const struct dt_object_operations osd_obj_ea_ops = {
3392         .do_read_lock         = osd_object_read_lock,
3393         .do_write_lock        = osd_object_write_lock,
3394         .do_read_unlock       = osd_object_read_unlock,
3395         .do_write_unlock      = osd_object_write_unlock,
3396         .do_write_locked      = osd_object_write_locked,
3397         .do_attr_get          = osd_attr_get,
3398         .do_declare_attr_set  = osd_declare_attr_set,
3399         .do_attr_set          = osd_attr_set,
3400         .do_ah_init           = osd_ah_init,
3401         .do_declare_create    = osd_declare_object_create,
3402         .do_create            = osd_object_ea_create,
3403         .do_declare_destroy   = osd_declare_object_destroy,
3404         .do_destroy           = osd_object_destroy,
3405         .do_index_try         = osd_index_try,
3406         .do_declare_ref_add   = osd_declare_object_ref_add,
3407         .do_ref_add           = osd_object_ref_add,
3408         .do_declare_ref_del   = osd_declare_object_ref_del,
3409         .do_ref_del           = osd_object_ref_del,
3410         .do_xattr_get         = osd_xattr_get,
3411         .do_declare_xattr_set = osd_declare_xattr_set,
3412         .do_xattr_set         = osd_xattr_set,
3413         .do_declare_xattr_del = osd_declare_xattr_del,
3414         .do_xattr_del         = osd_xattr_del,
3415         .do_xattr_list        = osd_xattr_list,
3416         .do_capa_get          = osd_capa_get,
3417         .do_object_sync       = osd_object_sync,
3418         .do_data_get          = osd_data_get,
3419 };
3420
3421 static const struct dt_object_operations osd_obj_otable_it_ops = {
3422         .do_attr_get    = osd_otable_it_attr_get,
3423         .do_index_try   = osd_index_try,
3424 };
3425
3426 static int osd_index_declare_iam_delete(const struct lu_env *env,
3427                                         struct dt_object *dt,
3428                                         const struct dt_key *key,
3429                                         struct thandle *handle)
3430 {
3431         struct osd_thandle    *oh;
3432
3433         oh = container_of0(handle, struct osd_thandle, ot_super);
3434         LASSERT(oh->ot_handle == NULL);
3435
3436         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3437                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3438
3439         return 0;
3440 }
3441
3442 /**
3443  *      delete a (key, value) pair from index \a dt specified by \a key
3444  *
3445  *      \param  dt      osd index object
3446  *      \param  key     key for index
3447  *      \param  rec     record reference
3448  *      \param  handle  transaction handler
3449  *
3450  *      \retval  0  success
3451  *      \retval -ve   failure
3452  */
3453
3454 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
3455                                 const struct dt_key *key,
3456                                 struct thandle *handle,
3457                                 struct lustre_capa *capa)
3458 {
3459         struct osd_thread_info *oti = osd_oti_get(env);
3460         struct osd_object      *obj = osd_dt_obj(dt);
3461         struct osd_thandle     *oh;
3462         struct iam_path_descr  *ipd;
3463         struct iam_container   *bag = &obj->oo_dir->od_container;
3464         int                     rc;
3465
3466         ENTRY;
3467
3468         LINVRNT(osd_invariant(obj));
3469         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3470         LASSERT(bag->ic_object == obj->oo_inode);
3471         LASSERT(handle != NULL);
3472
3473         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3474                 RETURN(-EACCES);
3475
3476         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3477
3478         ipd = osd_idx_ipd_get(env, bag);
3479         if (unlikely(ipd == NULL))
3480                 RETURN(-ENOMEM);
3481
3482         oh = container_of0(handle, struct osd_thandle, ot_super);
3483         LASSERT(oh->ot_handle != NULL);
3484         LASSERT(oh->ot_handle->h_transaction != NULL);
3485
3486         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3487                 /* swab quota uid/gid provided by caller */
3488                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3489                 key = (const struct dt_key *)&oti->oti_quota_id;
3490         }
3491
3492         rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
3493         osd_ipd_put(env, bag, ipd);
3494         LINVRNT(osd_invariant(obj));
3495         RETURN(rc);
3496 }
3497
3498 static int osd_index_declare_ea_delete(const struct lu_env *env,
3499                                        struct dt_object *dt,
3500                                        const struct dt_key *key,
3501                                        struct thandle *handle)
3502 {
3503         struct osd_thandle *oh;
3504         struct inode       *inode;
3505         int                 rc;
3506         ENTRY;
3507
3508         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3509         LASSERT(handle != NULL);
3510
3511         oh = container_of0(handle, struct osd_thandle, ot_super);
3512         LASSERT(oh->ot_handle == NULL);
3513
3514         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3515                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3516
3517         inode = osd_dt_obj(dt)->oo_inode;
3518         LASSERT(inode);
3519
3520         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0, oh,
3521                                    true, true, NULL, false);
3522         RETURN(rc);
3523 }
3524
3525 static inline int osd_get_fid_from_dentry(struct ldiskfs_dir_entry_2 *de,
3526                                           struct dt_rec *fid)
3527 {
3528         struct osd_fid_pack *rec;
3529         int                  rc = -ENODATA;
3530
3531         if (de->file_type & LDISKFS_DIRENT_LUFID) {
3532                 rec = (struct osd_fid_pack *) (de->name + de->name_len + 1);
3533                 rc = osd_fid_unpack((struct lu_fid *)fid, rec);
3534         }
3535         return rc;
3536 }
3537
3538 static int osd_remote_fid(const struct lu_env *env, struct osd_device *osd,
3539                           struct lu_fid *fid)
3540 {
3541         ENTRY;
3542
3543         /* FID seqs not in FLDB, must be local seq */
3544         if (unlikely(!fid_seq_in_fldb(fid_seq(fid))))
3545                 RETURN(0);
3546
3547         if (osd_seq_exists(env, osd, fid_seq(fid)))
3548                 RETURN(0);
3549
3550         RETURN(1);
3551 }
3552
3553 /**
3554  * Index delete function for interoperability mode (b11826).
3555  * It will remove the directory entry added by osd_index_ea_insert().
3556  * This entry is needed to maintain name->fid mapping.
3557  *
3558  * \param key,  key i.e. file entry to be deleted
3559  *
3560  * \retval   0, on success
3561  * \retval -ve, on error
3562  */
3563 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
3564                                const struct dt_key *key,
3565                                struct thandle *handle,
3566                                struct lustre_capa *capa)
3567 {
3568         struct osd_object          *obj    = osd_dt_obj(dt);
3569         struct inode               *dir    = obj->oo_inode;
3570         struct dentry              *dentry;
3571         struct osd_thandle         *oh;
3572         struct ldiskfs_dir_entry_2 *de = NULL;
3573         struct buffer_head         *bh;
3574         struct htree_lock          *hlock = NULL;
3575         struct lu_fid              *fid = &osd_oti_get(env)->oti_fid;
3576         struct osd_device          *osd = osd_dev(dt->do_lu.lo_dev);
3577         int                        rc;
3578         ENTRY;
3579
3580         LINVRNT(osd_invariant(obj));
3581         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3582         LASSERT(handle != NULL);
3583
3584         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3585
3586         oh = container_of(handle, struct osd_thandle, ot_super);
3587         LASSERT(oh->ot_handle != NULL);
3588         LASSERT(oh->ot_handle->h_transaction != NULL);
3589
3590         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3591                 RETURN(-EACCES);
3592
3593         ll_vfs_dq_init(dir);
3594         dentry = osd_child_dentry_get(env, obj,
3595                                       (char *)key, strlen((char *)key));
3596
3597         if (obj->oo_hl_head != NULL) {
3598                 hlock = osd_oti_get(env)->oti_hlock;
3599                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3600                                    dir, LDISKFS_HLOCK_DEL);
3601         } else {
3602                 down_write(&obj->oo_ext_idx_sem);
3603         }
3604
3605         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
3606         if (bh) {
3607                 __u32 ino = 0;
3608
3609                 /* If this is not the ".." entry, it might be a remote DNE
3610                  * entry and  we need to check if the FID is for a remote
3611                  * MDT.  If the FID is  not in the directory entry (e.g.
3612                  * upgraded 1.8 filesystem without dirdata enabled) then
3613                  * we need to get the FID from the LMA. For a remote directory
3614                  * there HAS to be an LMA, it cannot be an IGIF inode in this
3615                  * case.
3616                  *
3617                  * Delete the entry before the agent inode in order to
3618                  * simplify error handling.  At worst an error after deleting
3619                  * the entry first might leak the agent inode afterward. The
3620                  * reverse would need filesystem abort in case of error deleting
3621                  * the entry after the agent had been removed, or leave a
3622                  * dangling entry pointing at a random inode. */
3623                 if (strcmp((char *)key, dotdot) != 0) {
3624                         LASSERT(de != NULL);
3625                         rc = osd_get_fid_from_dentry(de, (struct dt_rec *)fid);
3626                         /* If Fid is not in dentry, try to get it from LMA */
3627                         if (rc == -ENODATA) {
3628                                 struct osd_inode_id *id;
3629                                 struct inode *inode;
3630
3631                                 /* Before trying to get fid from the inode,
3632                                  * check whether the inode is valid.
3633                                  *
3634                                  * If the inode has been deleted, do not go
3635                                  * ahead to do osd_ea_fid_get, which will set
3636                                  * the inode to bad inode, which might cause
3637                                  * the inode to be deleted uncorrectly */
3638                                 inode = ldiskfs_iget(osd_sb(osd),
3639                                                      le32_to_cpu(de->inode));
3640                                 if (IS_ERR(inode)) {
3641                                         CDEBUG(D_INODE, "%s: "DFID"get inode"
3642                                                "error.\n", osd_name(osd),
3643                                                PFID(fid));
3644                                         rc = PTR_ERR(inode);
3645                                 } else {
3646                                         if (likely(inode->i_nlink != 0)) {
3647                                                 id = &osd_oti_get(env)->oti_id;
3648                                                 rc = osd_ea_fid_get(env, obj,
3649                                                         le32_to_cpu(de->inode),
3650                                                                     fid, id);
3651                                         } else {
3652                                                 CDEBUG(D_INFO, "%s: %u "DFID
3653                                                        "deleted.\n",
3654                                                        osd_name(osd),
3655                                                        le32_to_cpu(de->inode),
3656                                                        PFID(fid));
3657                                                 rc = -ESTALE;
3658                                         }
3659                                         iput(inode);
3660                                 }
3661                         }
3662                         if (rc == 0 &&
3663                             unlikely(osd_remote_fid(env, osd, fid)))
3664                                 /* Need to delete agent inode */
3665                                 ino = le32_to_cpu(de->inode);
3666                 }
3667                 rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh);
3668                 brelse(bh);
3669                 if (rc == 0 && unlikely(ino != 0)) {
3670                         rc = osd_delete_local_agent_inode(env, osd, fid, ino,
3671                                                           oh);
3672                         if (rc != 0)
3673                                 CERROR("%s: del local inode "DFID": rc = %d\n",
3674                                        osd_name(osd), PFID(fid), rc);
3675                 }
3676         } else {
3677                 rc = -ENOENT;
3678         }
3679         if (hlock != NULL)
3680                 ldiskfs_htree_unlock(hlock);
3681         else
3682                 up_write(&obj->oo_ext_idx_sem);
3683
3684         if (rc != 0)
3685                 GOTO(out, rc);
3686
3687         /* For inode on the remote MDT, .. will point to
3688          * /Agent directory, Check whether it needs to delete
3689          * from agent directory */
3690         if (unlikely(strcmp((char *)key, dotdot) == 0)) {
3691                 rc = osd_delete_from_remote_parent(env, osd_obj2dev(obj), obj,
3692                                                    oh);
3693                 if (rc != 0 && rc != -ENOENT) {
3694                         CERROR("%s: delete agent inode "DFID": rc = %d\n",
3695                                osd_name(osd), PFID(fid), rc);
3696                 }
3697
3698                 if (rc == -ENOENT)
3699                         rc = 0;
3700
3701                 GOTO(out, rc);
3702         }
3703 out:
3704
3705         LASSERT(osd_invariant(obj));
3706         RETURN(rc);
3707 }
3708
3709 /**
3710  *      Lookup index for \a key and copy record to \a rec.
3711  *
3712  *      \param  dt      osd index object
3713  *      \param  key     key for index
3714  *      \param  rec     record reference
3715  *
3716  *      \retval  +ve  success : exact mach
3717  *      \retval  0    return record with key not greater than \a key
3718  *      \retval -ve   failure
3719  */
3720 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
3721                                 struct dt_rec *rec, const struct dt_key *key,
3722                                 struct lustre_capa *capa)
3723 {
3724         struct osd_object      *obj = osd_dt_obj(dt);
3725         struct iam_path_descr  *ipd;
3726         struct iam_container   *bag = &obj->oo_dir->od_container;
3727         struct osd_thread_info *oti = osd_oti_get(env);
3728         struct iam_iterator    *it = &oti->oti_idx_it;
3729         struct iam_rec         *iam_rec;
3730         int                     rc;
3731
3732         ENTRY;
3733
3734         LASSERT(osd_invariant(obj));
3735         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3736         LASSERT(bag->ic_object == obj->oo_inode);
3737
3738         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3739                 RETURN(-EACCES);
3740
3741         ipd = osd_idx_ipd_get(env, bag);
3742         if (IS_ERR(ipd))
3743                 RETURN(-ENOMEM);
3744
3745         /* got ipd now we can start iterator. */
3746         iam_it_init(it, bag, 0, ipd);
3747
3748         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3749                 /* swab quota uid/gid provided by caller */
3750                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3751                 key = (const struct dt_key *)&oti->oti_quota_id;
3752         }
3753
3754         rc = iam_it_get(it, (struct iam_key *)key);
3755         if (rc >= 0) {
3756                 if (S_ISDIR(obj->oo_inode->i_mode))
3757                         iam_rec = (struct iam_rec *)oti->oti_ldp;
3758                 else
3759                         iam_rec = (struct iam_rec *) rec;
3760
3761                 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
3762
3763                 if (S_ISDIR(obj->oo_inode->i_mode))
3764                         osd_fid_unpack((struct lu_fid *) rec,
3765                                        (struct osd_fid_pack *)iam_rec);
3766                 else if (fid_is_quota(lu_object_fid(&dt->do_lu)))
3767                         osd_quota_unpack(obj, rec);
3768         }
3769
3770         iam_it_put(it);
3771         iam_it_fini(it);
3772         osd_ipd_put(env, bag, ipd);
3773
3774         LINVRNT(osd_invariant(obj));
3775
3776         RETURN(rc);
3777 }
3778
3779 static int osd_index_declare_iam_insert(const struct lu_env *env,
3780                                         struct dt_object *dt,
3781                                         const struct dt_rec *rec,
3782                                         const struct dt_key *key,
3783                                         struct thandle *handle)
3784 {
3785         struct osd_thandle *oh;
3786
3787         LASSERT(handle != NULL);
3788
3789         oh = container_of0(handle, struct osd_thandle, ot_super);
3790         LASSERT(oh->ot_handle == NULL);
3791
3792         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3793                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
3794
3795         return 0;
3796 }
3797
3798 /**
3799  *      Inserts (key, value) pair in \a dt index object.
3800  *
3801  *      \param  dt      osd index object
3802  *      \param  key     key for index
3803  *      \param  rec     record reference
3804  *      \param  th      transaction handler
3805  *
3806  *      \retval  0  success
3807  *      \retval -ve failure
3808  */
3809 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
3810                                 const struct dt_rec *rec,
3811                                 const struct dt_key *key, struct thandle *th,
3812                                 struct lustre_capa *capa, int ignore_quota)
3813 {
3814         struct osd_object     *obj = osd_dt_obj(dt);
3815         struct iam_path_descr *ipd;
3816         struct osd_thandle    *oh;
3817         struct iam_container  *bag = &obj->oo_dir->od_container;
3818         struct osd_thread_info *oti = osd_oti_get(env);
3819         struct iam_rec         *iam_rec;
3820         int                     rc;
3821
3822         ENTRY;
3823
3824         LINVRNT(osd_invariant(obj));
3825         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3826         LASSERT(bag->ic_object == obj->oo_inode);
3827         LASSERT(th != NULL);
3828
3829         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3830                 RETURN(-EACCES);
3831
3832         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3833
3834         ipd = osd_idx_ipd_get(env, bag);
3835         if (unlikely(ipd == NULL))
3836                 RETURN(-ENOMEM);
3837
3838         oh = container_of0(th, struct osd_thandle, ot_super);
3839         LASSERT(oh->ot_handle != NULL);
3840         LASSERT(oh->ot_handle->h_transaction != NULL);
3841         if (S_ISDIR(obj->oo_inode->i_mode)) {
3842                 iam_rec = (struct iam_rec *)oti->oti_ldp;
3843                 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
3844         } else if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3845                 /* pack quota uid/gid */
3846                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3847                 key = (const struct dt_key *)&oti->oti_quota_id;
3848                 /* pack quota record */
3849                 rec = osd_quota_pack(obj, rec, &oti->oti_quota_rec);
3850                 iam_rec = (struct iam_rec *)rec;
3851         } else {
3852                 iam_rec = (struct iam_rec *)rec;
3853         }
3854
3855         rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
3856                         iam_rec, ipd);
3857         osd_ipd_put(env, bag, ipd);
3858         LINVRNT(osd_invariant(obj));
3859         RETURN(rc);
3860 }
3861
3862 /**
3863  * Calls ldiskfs_add_entry() to add directory entry
3864  * into the directory. This is required for
3865  * interoperability mode (b11826)
3866  *
3867  * \retval   0, on success
3868  * \retval -ve, on error
3869  */
3870 static int __osd_ea_add_rec(struct osd_thread_info *info,
3871                             struct osd_object *pobj, struct inode  *cinode,
3872                             const char *name, const struct dt_rec *fid,
3873                             struct htree_lock *hlock, struct thandle *th)
3874 {
3875         struct ldiskfs_dentry_param *ldp;
3876         struct dentry               *child;
3877         struct osd_thandle          *oth;
3878         int                          rc;
3879
3880         oth = container_of(th, struct osd_thandle, ot_super);
3881         LASSERT(oth->ot_handle != NULL);
3882         LASSERT(oth->ot_handle->h_transaction != NULL);
3883         LASSERT(pobj->oo_inode);
3884
3885         ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3886         if (unlikely(pobj->oo_inode ==
3887                      osd_sb(osd_obj2dev(pobj))->s_root->d_inode))
3888                 ldp->edp_magic = 0;
3889         else
3890                 osd_get_ldiskfs_dirent_param(ldp, fid);
3891         child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
3892         child->d_fsdata = (void *)ldp;
3893         ll_vfs_dq_init(pobj->oo_inode);
3894         rc = osd_ldiskfs_add_entry(oth->ot_handle, child, cinode, hlock);
3895
3896         RETURN(rc);
3897 }
3898
3899 /**
3900  * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
3901  * into the directory.Also sets flags into osd object to
3902  * indicate dot and dotdot are created. This is required for
3903  * interoperability mode (b11826)
3904  *
3905  * \param dir   directory for dot and dotdot fixup.
3906  * \param obj   child object for linking
3907  *
3908  * \retval   0, on success
3909  * \retval -ve, on error
3910  */
3911 static int osd_add_dot_dotdot(struct osd_thread_info *info,
3912                               struct osd_object *dir,
3913                               struct inode  *parent_dir, const char *name,
3914                               const struct dt_rec *dot_fid,
3915                               const struct dt_rec *dot_dot_fid,
3916                               struct thandle *th)
3917 {
3918         struct inode                *inode = dir->oo_inode;
3919         struct osd_thandle          *oth;
3920         int result = 0;
3921
3922         oth = container_of(th, struct osd_thandle, ot_super);
3923         LASSERT(oth->ot_handle->h_transaction != NULL);
3924         LASSERT(S_ISDIR(dir->oo_inode->i_mode));
3925
3926         if (strcmp(name, dot) == 0) {
3927                 if (dir->oo_compat_dot_created) {
3928                         result = -EEXIST;
3929                 } else {
3930                         LASSERT(inode == parent_dir);
3931                         dir->oo_compat_dot_created = 1;
3932                         result = 0;
3933                 }
3934         } else if (strcmp(name, dotdot) == 0) {
3935                 if (!dir->oo_compat_dot_created)
3936                         return -EINVAL;
3937                 /* in case of rename, dotdot is already created */
3938                 if (dir->oo_compat_dotdot_created) {
3939                         return __osd_ea_add_rec(info, dir, parent_dir, name,
3940                                                 dot_dot_fid, NULL, th);
3941                 }
3942
3943                 result = osd_add_dot_dotdot_internal(info, dir->oo_inode,
3944                                                 parent_dir, dot_fid,
3945                                                 dot_dot_fid, oth);
3946                 if (result == 0)
3947                         dir->oo_compat_dotdot_created = 1;
3948         }
3949
3950         return result;
3951 }
3952
3953
3954 /**
3955  * It will call the appropriate osd_add* function and return the
3956  * value, return by respective functions.
3957  */
3958 static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj,
3959                           struct inode *cinode, const char *name,
3960                           const struct dt_rec *fid, struct thandle *th)
3961 {
3962         struct osd_thread_info *info   = osd_oti_get(env);
3963         struct htree_lock      *hlock;
3964         int                     rc;
3965
3966         hlock = pobj->oo_hl_head != NULL ? info->oti_hlock : NULL;
3967
3968         if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
3969                                                    name[2] =='\0'))) {
3970                 if (hlock != NULL) {
3971                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3972                                            pobj->oo_inode, 0);
3973                 } else {
3974                         down_write(&pobj->oo_ext_idx_sem);
3975                 }
3976                 rc = osd_add_dot_dotdot(info, pobj, cinode, name,
3977                      (struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
3978                                         fid, th);
3979         } else {
3980                 if (hlock != NULL) {
3981                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3982                                            pobj->oo_inode, LDISKFS_HLOCK_ADD);
3983                 } else {
3984                         down_write(&pobj->oo_ext_idx_sem);
3985                 }
3986
3987                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_INDIR)) {
3988                         struct lu_fid *tfid = &info->oti_fid;
3989
3990                         *tfid = *(const struct lu_fid *)fid;
3991                         tfid->f_ver = ~0;
3992                         rc = __osd_ea_add_rec(info, pobj, cinode, name,
3993                                               (const struct dt_rec *)tfid,
3994                                               hlock, th);
3995                 } else {
3996                         rc = __osd_ea_add_rec(info, pobj, cinode, name, fid,
3997                                               hlock, th);
3998                 }
3999         }
4000         if (hlock != NULL)
4001                 ldiskfs_htree_unlock(hlock);
4002         else
4003                 up_write(&pobj->oo_ext_idx_sem);
4004
4005         return rc;
4006 }
4007
4008 static void
4009 osd_consistency_check(struct osd_thread_info *oti, struct osd_device *dev,
4010                       struct osd_idmap_cache *oic)
4011 {
4012         struct osd_scrub    *scrub = &dev->od_scrub;
4013         struct lu_fid       *fid   = &oic->oic_fid;
4014         struct osd_inode_id *id    = &oti->oti_id;
4015         int                  once  = 0;
4016         int                  rc;
4017         ENTRY;
4018
4019         if (!fid_is_norm(fid) && !fid_is_igif(fid))
4020                 RETURN_EXIT;
4021
4022 again:
4023         rc = osd_oi_lookup(oti, dev, fid, id, OI_CHECK_FLD);
4024         if (rc != 0 && rc != -ENOENT)
4025                 RETURN_EXIT;
4026
4027         if (rc == 0 && osd_id_eq(id, &oic->oic_lid))
4028                 RETURN_EXIT;
4029
4030         if (thread_is_running(&scrub->os_thread)) {
4031                 rc = osd_oii_insert(dev, oic, rc == -ENOENT);
4032                 /* There is race condition between osd_oi_lookup and OI scrub.
4033                  * The OI scrub finished just after osd_oi_lookup() failure.
4034                  * Under such case, it is unnecessary to trigger OI scrub again,
4035                  * but try to call osd_oi_lookup() again. */
4036                 if (unlikely(rc == -EAGAIN))
4037                         goto again;
4038
4039                 RETURN_EXIT;
4040         }
4041
4042         if (!dev->od_noscrub && ++once == 1) {
4043                 rc = osd_scrub_start(dev);
4044                 LCONSOLE_WARN("%.16s: trigger OI scrub by RPC for "DFID
4045                               ", rc = %d [2]\n",
4046                               LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
4047                               PFID(fid), rc);
4048                 if (rc == 0)
4049                         goto again;
4050         }
4051
4052         EXIT;
4053 }
4054
4055 static int osd_fail_fid_lookup(struct osd_thread_info *oti,
4056                                struct osd_device *dev,
4057                                struct osd_idmap_cache *oic,
4058                                struct lu_fid *fid, __u32 ino)
4059 {
4060         struct lustre_mdt_attrs *lma   = &oti->oti_mdt_attrs;
4061         struct inode            *inode;
4062         int                      rc;
4063
4064         osd_id_gen(&oic->oic_lid, ino, OSD_OII_NOGEN);
4065         inode = osd_iget(oti, dev, &oic->oic_lid);
4066         if (IS_ERR(inode)) {
4067                 fid_zero(&oic->oic_fid);
4068                 return PTR_ERR(inode);
4069         }
4070
4071         rc = osd_get_lma(oti, inode, &oti->oti_obj_dentry, lma);
4072         iput(inode);
4073         if (rc != 0)
4074                 fid_zero(&oic->oic_fid);
4075         else
4076                 *fid = oic->oic_fid = lma->lma_self_fid;
4077         return rc;
4078 }
4079
4080 int osd_add_oi_cache(struct osd_thread_info *info, struct osd_device *osd,
4081                      struct osd_inode_id *id, const struct lu_fid *fid)
4082 {
4083         CDEBUG(D_INODE, "add "DFID" %u:%u to info %p\n", PFID(fid),
4084                id->oii_ino, id->oii_gen, info);
4085         info->oti_cache.oic_lid = *id;
4086         info->oti_cache.oic_fid = *fid;
4087         info->oti_cache.oic_dev = osd;
4088
4089         return 0;
4090 }
4091
4092 /**
4093  * Calls ->lookup() to find dentry. From dentry get inode and
4094  * read inode's ea to get fid. This is required for  interoperability
4095  * mode (b11826)
4096  *
4097  * \retval   0, on success
4098  * \retval -ve, on error
4099  */
4100 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
4101                              struct dt_rec *rec, const struct dt_key *key)
4102 {
4103         struct inode               *dir    = obj->oo_inode;
4104         struct dentry              *dentry;
4105         struct ldiskfs_dir_entry_2 *de;
4106         struct buffer_head         *bh;
4107         struct lu_fid              *fid = (struct lu_fid *) rec;
4108         struct htree_lock          *hlock = NULL;
4109         int                         ino;
4110         int                         rc;
4111         ENTRY;
4112
4113         LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
4114
4115         dentry = osd_child_dentry_get(env, obj,
4116                                       (char *)key, strlen((char *)key));
4117
4118         if (obj->oo_hl_head != NULL) {
4119                 hlock = osd_oti_get(env)->oti_hlock;
4120                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4121                                    dir, LDISKFS_HLOCK_LOOKUP);
4122         } else {
4123                 down_read(&obj->oo_ext_idx_sem);
4124         }
4125
4126         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
4127         if (bh) {
4128                 struct osd_thread_info *oti = osd_oti_get(env);
4129                 struct osd_inode_id *id = &oti->oti_id;
4130                 struct osd_idmap_cache *oic = &oti->oti_cache;
4131                 struct osd_device *dev = osd_obj2dev(obj);
4132                 struct osd_scrub *scrub = &dev->od_scrub;
4133                 struct scrub_file *sf = &scrub->os_file;
4134
4135                 ino = le32_to_cpu(de->inode);
4136                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP)) {
4137                         brelse(bh);
4138                         rc = osd_fail_fid_lookup(oti, dev, oic, fid, ino);
4139                         GOTO(out, rc);
4140                 }
4141
4142                 rc = osd_get_fid_from_dentry(de, rec);
4143
4144                 /* done with de, release bh */
4145                 brelse(bh);
4146                 if (rc != 0)
4147                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
4148                 else
4149                         osd_id_gen(id, ino, OSD_OII_NOGEN);
4150                 if (rc != 0) {
4151                         fid_zero(&oic->oic_fid);
4152                         GOTO(out, rc);
4153                 }
4154
4155                 if (osd_remote_fid(env, dev, fid))
4156                         GOTO(out, rc = 0);
4157
4158                 rc = osd_add_oi_cache(osd_oti_get(env), osd_obj2dev(obj), id,
4159                                       fid);
4160                 if (rc != 0)
4161                         GOTO(out, rc);
4162                 if ((scrub->os_pos_current <= ino) &&
4163                     ((sf->sf_flags & SF_INCONSISTENT) ||
4164                      (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
4165                      ldiskfs_test_bit(osd_oi_fid2idx(dev, fid),
4166                                       sf->sf_oi_bitmap)))
4167                         osd_consistency_check(oti, dev, oic);
4168         } else {
4169                 rc = -ENOENT;
4170         }
4171
4172         GOTO(out, rc);
4173
4174 out:
4175         if (hlock != NULL)
4176                 ldiskfs_htree_unlock(hlock);
4177         else
4178                 up_read(&obj->oo_ext_idx_sem);
4179         return rc;
4180 }
4181
4182 /**
4183  * Find the osd object for given fid.
4184  *
4185  * \param fid need to find the osd object having this fid
4186  *
4187  * \retval osd_object on success
4188  * \retval        -ve on error
4189  */
4190 struct osd_object *osd_object_find(const struct lu_env *env,
4191                                    struct dt_object *dt,
4192                                    const struct lu_fid *fid)
4193 {
4194         struct lu_device  *ludev = dt->do_lu.lo_dev;
4195         struct osd_object *child = NULL;
4196         struct lu_object  *luch;
4197         struct lu_object  *lo;
4198
4199         /*
4200          * at this point topdev might not exist yet
4201          * (i.e. MGS is preparing profiles). so we can
4202          * not rely on topdev and instead lookup with
4203          * our device passed as topdev. this can't work
4204          * if the object isn't cached yet (as osd doesn't
4205          * allocate lu_header). IOW, the object must be
4206          * in the cache, otherwise lu_object_alloc() crashes
4207          * -bzzz
4208          */
4209         luch = lu_object_find_at(env, ludev->ld_site->ls_top_dev == NULL ?
4210                                  ludev : ludev->ld_site->ls_top_dev,
4211                                  fid, NULL);
4212         if (!IS_ERR(luch)) {
4213                 if (lu_object_exists(luch)) {
4214                         lo = lu_object_locate(luch->lo_header, ludev->ld_type);
4215                         if (lo != NULL)
4216                                 child = osd_obj(lo);
4217                         else
4218                                 LU_OBJECT_DEBUG(D_ERROR, env, luch,
4219                                                 "lu_object can't be located"
4220                                                 DFID"\n", PFID(fid));
4221
4222                         if (child == NULL) {
4223                                 lu_object_put(env, luch);
4224                                 CERROR("Unable to get osd_object\n");
4225                                 child = ERR_PTR(-ENOENT);
4226                         }
4227                 } else {
4228                         LU_OBJECT_DEBUG(D_ERROR, env, luch,
4229                                         "lu_object does not exists "DFID"\n",
4230                                         PFID(fid));
4231                         lu_object_put(env, luch);
4232                         child = ERR_PTR(-ENOENT);
4233                 }
4234         } else {
4235                 child = ERR_CAST(luch);
4236         }
4237
4238         return child;
4239 }
4240
4241 /**
4242  * Put the osd object once done with it.
4243  *
4244  * \param obj osd object that needs to be put
4245  */
4246 static inline void osd_object_put(const struct lu_env *env,
4247                                   struct osd_object *obj)
4248 {
4249         lu_object_put(env, &obj->oo_dt.do_lu);
4250 }
4251
4252 static int osd_index_declare_ea_insert(const struct lu_env *env,
4253                                        struct dt_object *dt,
4254                                        const struct dt_rec *rec,
4255                                        const struct dt_key *key,
4256                                        struct thandle *handle)
4257 {
4258         struct osd_thandle      *oh;
4259         struct osd_device       *osd   = osd_dev(dt->do_lu.lo_dev);
4260         struct lu_fid           *fid = (struct lu_fid *)rec;
4261         int                     rc;
4262         ENTRY;
4263
4264         LASSERT(!dt_object_remote(dt));
4265         LASSERT(handle != NULL);
4266
4267         oh = container_of0(handle, struct osd_thandle, ot_super);
4268         LASSERT(oh->ot_handle == NULL);
4269
4270         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4271                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
4272
4273         if (osd_dt_obj(dt)->oo_inode != NULL) {
4274                 struct inode *inode = osd_dt_obj(dt)->oo_inode;
4275
4276                 /* We ignore block quota on meta pool (MDTs), so needn't
4277                  * calculate how many blocks will be consumed by this index
4278                  * insert */
4279                 rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0,
4280                                            oh, true, true, NULL, false);
4281         }
4282
4283         if (fid == NULL)
4284                 RETURN(0);
4285
4286         rc = osd_remote_fid(env, osd, fid);
4287         if (rc <= 0)
4288                 RETURN(rc);
4289
4290         rc = 0;
4291
4292         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
4293                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
4294         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4295                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
4296         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4297                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
4298
4299         RETURN(rc);
4300 }
4301
4302 /**
4303  * Index add function for interoperability mode (b11826).
4304  * It will add the directory entry.This entry is needed to
4305  * maintain name->fid mapping.
4306  *
4307  * \param key it is key i.e. file entry to be inserted
4308  * \param rec it is value of given key i.e. fid
4309  *
4310  * \retval   0, on success
4311  * \retval -ve, on error
4312  */
4313 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
4314                                const struct dt_rec *rec,
4315                                const struct dt_key *key, struct thandle *th,
4316                                struct lustre_capa *capa, int ignore_quota)
4317 {
4318         struct osd_object       *obj = osd_dt_obj(dt);
4319         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
4320         struct lu_fid           *fid = (struct lu_fid *) rec;
4321         const char              *name = (const char *)key;
4322         struct osd_thread_info  *oti   = osd_oti_get(env);
4323         struct osd_inode_id     *id    = &oti->oti_id;
4324         struct inode            *child_inode = NULL;
4325         struct osd_object       *child = NULL;
4326         int                     rc;
4327         ENTRY;
4328
4329         LASSERT(osd_invariant(obj));
4330         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
4331         LASSERT(th != NULL);
4332
4333         osd_trans_exec_op(env, th, OSD_OT_INSERT);
4334
4335         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
4336                 RETURN(-EACCES);
4337
4338         LASSERTF(fid_is_sane(fid), "fid"DFID" is insane!", PFID(fid));
4339
4340         rc = osd_remote_fid(env, osd, fid);
4341         if (rc < 0) {
4342                 CERROR("%s: Can not find object "DFID" rc %d\n",
4343                        osd_name(osd), PFID(fid), rc);
4344                 RETURN(rc);
4345         }
4346
4347         if (rc == 1) {
4348                 /* Insert remote entry */
4349                 if (strcmp(name, dotdot) == 0 && strlen(name) == 2) {
4350                         struct osd_mdobj_map    *omm = osd->od_mdt_map;
4351                         struct osd_thandle      *oh;
4352
4353                         /* If parent on remote MDT, we need put this object
4354                          * under AGENT */
4355                         oh = container_of(th, typeof(*oh), ot_super);
4356                         rc = osd_add_to_remote_parent(env, osd, obj, oh);
4357                         if (rc != 0) {
4358                                 CERROR("%s: add "DFID" error: rc = %d\n",
4359                                        osd_name(osd),
4360                                        PFID(lu_object_fid(&dt->do_lu)), rc);
4361                                 RETURN(rc);
4362                         }
4363
4364                         child_inode = igrab(omm->omm_remote_parent->d_inode);
4365                 } else {
4366                         child_inode = osd_create_local_agent_inode(env, osd,
4367                                                                    obj, fid,
4368                                                                    th);
4369                         if (IS_ERR(child_inode))
4370                                 RETURN(PTR_ERR(child_inode));
4371                 }
4372         } else {
4373                 /* Insert local entry */
4374                 child = osd_object_find(env, dt, fid);
4375                 if (IS_ERR(child)) {
4376                         CERROR("%s: Can not find object "DFID"%u:%u: rc = %d\n",
4377                                osd_name(osd), PFID(fid),
4378                                id->oii_ino, id->oii_gen,
4379                                (int)PTR_ERR(child));
4380                         RETURN(PTR_ERR(child));
4381                 }
4382                 child_inode = igrab(child->oo_inode);
4383         }
4384
4385         rc = osd_ea_add_rec(env, obj, child_inode, name, rec, th);
4386
4387         CDEBUG(D_INODE, "parent %lu insert %s:%lu rc = %d\n",
4388                obj->oo_inode->i_ino, name, child_inode->i_ino, rc);
4389
4390         iput(child_inode);
4391         if (child != NULL)
4392                 osd_object_put(env, child);
4393         LASSERT(osd_invariant(obj));
4394         RETURN(rc);
4395 }
4396
4397 /**
4398  *  Initialize osd Iterator for given osd index object.
4399  *
4400  *  \param  dt      osd index object
4401  */
4402
4403 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
4404                                      struct dt_object *dt,
4405                                      __u32 unused,
4406                                      struct lustre_capa *capa)
4407 {
4408         struct osd_it_iam      *it;
4409         struct osd_thread_info *oti = osd_oti_get(env);
4410         struct osd_object      *obj = osd_dt_obj(dt);
4411         struct lu_object       *lo  = &dt->do_lu;
4412         struct iam_path_descr  *ipd;
4413         struct iam_container   *bag = &obj->oo_dir->od_container;
4414
4415         LASSERT(lu_object_exists(lo));
4416
4417         if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
4418                 return ERR_PTR(-EACCES);
4419
4420         it = &oti->oti_it;
4421         ipd = osd_it_ipd_get(env, bag);
4422         if (likely(ipd != NULL)) {
4423                 it->oi_obj = obj;
4424                 it->oi_ipd = ipd;
4425                 lu_object_get(lo);
4426                 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
4427                 return (struct dt_it *)it;
4428         }
4429         return ERR_PTR(-ENOMEM);
4430 }
4431
4432 /**
4433  * free given Iterator.
4434  */
4435
4436 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
4437 {
4438         struct osd_it_iam *it = (struct osd_it_iam *)di;
4439         struct osd_object *obj = it->oi_obj;
4440
4441         iam_it_fini(&it->oi_it);
4442         osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
4443         lu_object_put(env, &obj->oo_dt.do_lu);
4444 }
4445
4446 /**
4447  *  Move Iterator to record specified by \a key
4448  *
4449  *  \param  di      osd iterator
4450  *  \param  key     key for index
4451  *
4452  *  \retval +ve  di points to record with least key not larger than key
4453  *  \retval  0   di points to exact matched key
4454  *  \retval -ve  failure
4455  */
4456
4457 static int osd_it_iam_get(const struct lu_env *env,
4458                           struct dt_it *di, const struct dt_key *key)
4459 {
4460         struct osd_thread_info  *oti = osd_oti_get(env);
4461         struct osd_it_iam       *it = (struct osd_it_iam *)di;
4462
4463         if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4464                 /* swab quota uid/gid */
4465                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
4466                 key = (struct dt_key *)&oti->oti_quota_id;
4467         }
4468
4469         return iam_it_get(&it->oi_it, (const struct iam_key *)key);
4470 }
4471
4472 /**
4473  *  Release Iterator
4474  *
4475  *  \param  di      osd iterator
4476  */
4477 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
4478 {
4479         struct osd_it_iam *it = (struct osd_it_iam *)di;
4480
4481         iam_it_put(&it->oi_it);
4482 }
4483
4484 /**
4485  *  Move iterator by one record
4486  *
4487  *  \param  di      osd iterator
4488  *
4489  *  \retval +1   end of container reached
4490  *  \retval  0   success
4491  *  \retval -ve  failure
4492  */
4493
4494 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
4495 {
4496         struct osd_it_iam *it = (struct osd_it_iam *)di;
4497
4498         return iam_it_next(&it->oi_it);
4499 }
4500
4501 /**
4502  * Return pointer to the key under iterator.
4503  */
4504
4505 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
4506                                  const struct dt_it *di)
4507 {
4508         struct osd_thread_info *oti = osd_oti_get(env);
4509         struct osd_it_iam      *it = (struct osd_it_iam *)di;
4510         struct osd_object      *obj = it->oi_obj;
4511         struct dt_key          *key;
4512
4513         key = (struct dt_key *)iam_it_key_get(&it->oi_it);
4514
4515         if (!IS_ERR(key) && fid_is_quota(lu_object_fid(&obj->oo_dt.do_lu))) {
4516                 /* swab quota uid/gid */
4517                 oti->oti_quota_id = le64_to_cpu(*((__u64 *)key));
4518                 key = (struct dt_key *)&oti->oti_quota_id;
4519         }
4520
4521         return key;
4522 }
4523
4524 /**
4525  * Return size of key under iterator (in bytes)
4526  */
4527
4528 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
4529 {
4530         struct osd_it_iam *it = (struct osd_it_iam *)di;
4531
4532         return iam_it_key_size(&it->oi_it);
4533 }
4534
4535 static inline void
4536 osd_it_append_attrs(struct lu_dirent *ent, int len, __u16 type)
4537 {
4538         /* check if file type is required */
4539         if (ent->lde_attrs & LUDA_TYPE) {
4540                 struct luda_type *lt;
4541                 int align = sizeof(*lt) - 1;
4542
4543                 len = (len + align) & ~align;
4544                 lt = (struct luda_type *)(ent->lde_name + len);
4545                 lt->lt_type = cpu_to_le16(DTTOIF(type));
4546         }
4547
4548         ent->lde_attrs = cpu_to_le32(ent->lde_attrs);
4549 }
4550
4551 /**
4552  * build lu direct from backend fs dirent.
4553  */
4554
4555 static inline void
4556 osd_it_pack_dirent(struct lu_dirent *ent, struct lu_fid *fid, __u64 offset,
4557                    char *name, __u16 namelen, __u16 type, __u32 attr)
4558 {
4559         ent->lde_attrs = attr | LUDA_FID;
4560         fid_cpu_to_le(&ent->lde_fid, fid);
4561
4562         ent->lde_hash = cpu_to_le64(offset);
4563         ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr));
4564
4565         strncpy(ent->lde_name, name, namelen);
4566         ent->lde_name[namelen] = '\0';
4567         ent->lde_namelen = cpu_to_le16(namelen);
4568
4569         /* append lustre attributes */
4570         osd_it_append_attrs(ent, namelen, type);
4571 }
4572
4573 /**
4574  * Return pointer to the record under iterator.
4575  */
4576 static int osd_it_iam_rec(const struct lu_env *env,
4577                           const struct dt_it *di,
4578                           struct dt_rec *dtrec, __u32 attr)
4579 {
4580         struct osd_it_iam      *it   = (struct osd_it_iam *)di;
4581         struct osd_thread_info *info = osd_oti_get(env);
4582         ENTRY;
4583
4584         if (S_ISDIR(it->oi_obj->oo_inode->i_mode)) {
4585                 const struct osd_fid_pack *rec;
4586                 struct lu_fid             *fid = &info->oti_fid;
4587                 struct lu_dirent          *lde = (struct lu_dirent *)dtrec;
4588                 char                      *name;
4589                 int                        namelen;
4590                 __u64                      hash;
4591                 int                        rc;
4592
4593                 name = (char *)iam_it_key_get(&it->oi_it);
4594                 if (IS_ERR(name))
4595                         RETURN(PTR_ERR(name));
4596
4597                 namelen = iam_it_key_size(&it->oi_it);
4598
4599                 rec = (const struct osd_fid_pack *)iam_it_rec_get(&it->oi_it);
4600                 if (IS_ERR(rec))
4601                         RETURN(PTR_ERR(rec));
4602
4603                 rc = osd_fid_unpack(fid, rec);
4604                 if (rc)
4605                         RETURN(rc);
4606
4607                 hash = iam_it_store(&it->oi_it);
4608
4609                 /* IAM does not store object type in IAM index (dir) */
4610                 osd_it_pack_dirent(lde, fid, hash, name, namelen,
4611                                    0, LUDA_FID);
4612         } else if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4613                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4614                            (struct iam_rec *)dtrec);
4615                 osd_quota_unpack(it->oi_obj, dtrec);
4616         } else {
4617                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4618                            (struct iam_rec *)dtrec);
4619         }
4620
4621         RETURN(0);
4622 }
4623
4624 /**
4625  * Returns cookie for current Iterator position.
4626  */
4627 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
4628 {
4629         struct osd_it_iam *it = (struct osd_it_iam *)di;
4630
4631         return iam_it_store(&it->oi_it);
4632 }
4633
4634 /**
4635  * Restore iterator from cookie.
4636  *
4637  * \param  di      osd iterator
4638  * \param  hash    Iterator location cookie
4639  *
4640  * \retval +ve  di points to record with least key not larger than key.
4641  * \retval  0   di points to exact matched key
4642  * \retval -ve  failure
4643  */
4644
4645 static int osd_it_iam_load(const struct lu_env *env,
4646                            const struct dt_it *di, __u64 hash)
4647 {
4648         struct osd_it_iam *it = (struct osd_it_iam *)di;
4649
4650         return iam_it_load(&it->oi_it, hash);
4651 }
4652
4653 static const struct dt_index_operations osd_index_iam_ops = {
4654         .dio_lookup         = osd_index_iam_lookup,
4655         .dio_declare_insert = osd_index_declare_iam_insert,
4656         .dio_insert         = osd_index_iam_insert,
4657         .dio_declare_delete = osd_index_declare_iam_delete,
4658         .dio_delete         = osd_index_iam_delete,
4659         .dio_it     = {
4660                 .init     = osd_it_iam_init,
4661                 .fini     = osd_it_iam_fini,
4662                 .get      = osd_it_iam_get,
4663                 .put      = osd_it_iam_put,
4664                 .next     = osd_it_iam_next,
4665                 .key      = osd_it_iam_key,
4666                 .key_size = osd_it_iam_key_size,
4667                 .rec      = osd_it_iam_rec,
4668                 .store    = osd_it_iam_store,
4669                 .load     = osd_it_iam_load
4670         }
4671 };
4672
4673
4674 /**
4675  * Creates or initializes iterator context.
4676  *
4677  * \retval struct osd_it_ea, iterator structure on success
4678  *
4679  */
4680 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
4681                                     struct dt_object *dt,
4682                                     __u32 attr,
4683                                     struct lustre_capa *capa)
4684 {
4685         struct osd_object       *obj  = osd_dt_obj(dt);
4686         struct osd_thread_info  *info = osd_oti_get(env);
4687         struct osd_it_ea        *it   = &info->oti_it_ea;
4688         struct file             *file = &it->oie_file;
4689         struct lu_object        *lo   = &dt->do_lu;
4690         struct dentry           *obj_dentry = &info->oti_it_dentry;
4691         ENTRY;
4692         LASSERT(lu_object_exists(lo));
4693
4694         obj_dentry->d_inode = obj->oo_inode;
4695         obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
4696         obj_dentry->d_name.hash = 0;
4697
4698         it->oie_rd_dirent       = 0;
4699         it->oie_it_dirent       = 0;
4700         it->oie_dirent          = NULL;
4701         it->oie_buf             = info->oti_it_ea_buf;
4702         it->oie_obj             = obj;
4703
4704         /* Reset the "file" totally to avoid to reuse any old value from
4705          * former readdir handling, the "file->f_pos" should be zero. */
4706         memset(file, 0, sizeof(*file));
4707         /* Only FMODE_64BITHASH or FMODE_32BITHASH should be set, NOT both. */
4708         if (attr & LUDA_64BITHASH)
4709                 file->f_mode    = FMODE_64BITHASH;
4710         else
4711                 file->f_mode    = FMODE_32BITHASH;
4712         file->f_dentry          = obj_dentry;
4713         file->f_mapping         = obj->oo_inode->i_mapping;
4714         file->f_op              = obj->oo_inode->i_fop;
4715         set_file_inode(file, obj->oo_inode);
4716
4717         lu_object_get(lo);
4718         RETURN((struct dt_it *) it);
4719 }
4720
4721 /**
4722  * Destroy or finishes iterator context.
4723  *
4724  * \param di iterator structure to be destroyed
4725  */
4726 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
4727 {
4728         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4729         struct osd_object    *obj  = it->oie_obj;
4730         struct inode       *inode  = obj->oo_inode;
4731
4732         ENTRY;
4733         it->oie_file.f_op->release(inode, &it->oie_file);
4734         lu_object_put(env, &obj->oo_dt.do_lu);
4735         EXIT;
4736 }
4737
4738 /**
4739  * It position the iterator at given key, so that next lookup continues from
4740  * that key Or it is similar to dio_it->load() but based on a key,
4741  * rather than file position.
4742  *
4743  * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
4744  * to the beginning.
4745  *
4746  * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
4747  */
4748 static int osd_it_ea_get(const struct lu_env *env,
4749                          struct dt_it *di, const struct dt_key *key)
4750 {
4751         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4752
4753         ENTRY;
4754         LASSERT(((const char *)key)[0] == '\0');
4755         it->oie_file.f_pos      = 0;
4756         it->oie_rd_dirent       = 0;
4757         it->oie_it_dirent       = 0;
4758         it->oie_dirent          = NULL;
4759
4760         RETURN(+1);
4761 }
4762
4763 /**
4764  * Does nothing
4765  */
4766 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
4767 {
4768 }
4769
4770 struct osd_filldir_cbs {
4771 #ifdef HAVE_DIR_CONTEXT
4772         struct dir_context ctx;
4773 #endif
4774         struct osd_it_ea  *it;
4775 };
4776 /**
4777  * It is called internally by ->readdir(). It fills the
4778  * iterator's in-memory data structure with required
4779  * information i.e. name, namelen, rec_size etc.
4780  *
4781  * \param buf in which information to be filled in.
4782  * \param name name of the file in given dir
4783  *
4784  * \retval 0 on success
4785  * \retval 1 on buffer full
4786  */
4787 static int osd_ldiskfs_filldir(void *buf, const char *name, int namelen,
4788                                loff_t offset, __u64 ino,
4789                                unsigned d_type)
4790 {
4791         struct osd_it_ea        *it   = ((struct osd_filldir_cbs *)buf)->it;
4792         struct osd_object       *obj  = it->oie_obj;
4793         struct osd_it_ea_dirent *ent  = it->oie_dirent;
4794         struct lu_fid           *fid  = &ent->oied_fid;
4795         struct osd_fid_pack     *rec;
4796         ENTRY;
4797
4798         /* this should never happen */
4799         if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) {
4800                 CERROR("ldiskfs return invalid namelen %d\n", namelen);
4801                 RETURN(-EIO);
4802         }
4803
4804         if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen >
4805             OSD_IT_EA_BUFSIZE)
4806                 RETURN(1);
4807
4808         /* "." is just the object itself. */
4809         if (namelen == 1 && name[0] == '.') {
4810                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4811         } else if (d_type & LDISKFS_DIRENT_LUFID) {
4812                 rec = (struct osd_fid_pack*) (name + namelen + 1);
4813                 if (osd_fid_unpack(fid, rec) != 0)
4814                         fid_zero(fid);
4815         } else {
4816                 fid_zero(fid);
4817         }
4818         d_type &= ~LDISKFS_DIRENT_LUFID;
4819
4820         /* NOT export local root. */
4821         if (unlikely(osd_sb(osd_obj2dev(obj))->s_root->d_inode->i_ino == ino)) {
4822                 ino = obj->oo_inode->i_ino;
4823                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4824         }
4825
4826         ent->oied_ino     = ino;
4827         ent->oied_off     = offset;
4828         ent->oied_namelen = namelen;
4829         ent->oied_type    = d_type;
4830
4831         memcpy(ent->oied_name, name, namelen);
4832
4833         it->oie_rd_dirent++;
4834         it->oie_dirent = (void *) ent + cfs_size_round(sizeof(*ent) + namelen);
4835         RETURN(0);
4836 }
4837
4838 /**
4839  * Calls ->readdir() to load a directory entry at a time
4840  * and stored it in iterator's in-memory data structure.
4841  *
4842  * \param di iterator's in memory structure
4843  *
4844  * \retval   0 on success
4845  * \retval -ve on error
4846  * \retval +1 reach the end of entry
4847  */
4848 static int osd_ldiskfs_it_fill(const struct lu_env *env,
4849                                const struct dt_it *di)
4850 {
4851         struct osd_it_ea   *it    = (struct osd_it_ea *)di;
4852         struct osd_object  *obj   = it->oie_obj;
4853         struct inode       *inode = obj->oo_inode;
4854         struct htree_lock  *hlock = NULL;
4855         struct file        *filp  = &it->oie_file;
4856         int                 rc = 0;
4857         struct osd_filldir_cbs buf = {
4858 #ifdef HAVE_DIR_CONTEXT
4859                 .ctx.actor = osd_ldiskfs_filldir,
4860 #endif
4861                 .it = it
4862         };
4863
4864         ENTRY;
4865         it->oie_dirent = it->oie_buf;
4866         it->oie_rd_dirent = 0;
4867
4868         if (obj->oo_hl_head != NULL) {
4869                 hlock = osd_oti_get(env)->oti_hlock;
4870                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4871                                    inode, LDISKFS_HLOCK_READDIR);
4872         } else {
4873                 down_read(&obj->oo_ext_idx_sem);
4874         }
4875
4876 #ifdef HAVE_DIR_CONTEXT
4877         buf.ctx.pos = filp->f_pos;
4878         rc = inode->i_fop->iterate(filp, &buf.ctx);
4879         filp->f_pos = buf.ctx.pos;
4880 #else
4881         rc = inode->i_fop->readdir(filp, &buf, osd_ldiskfs_filldir);
4882 #endif
4883
4884         if (hlock != NULL)
4885                 ldiskfs_htree_unlock(hlock);
4886         else
4887                 up_read(&obj->oo_ext_idx_sem);
4888
4889         if (it->oie_rd_dirent == 0) {
4890                 /*If it does not get any dirent, it means it has been reached
4891                  *to the end of the dir */
4892                 it->oie_file.f_pos = ldiskfs_get_htree_eof(&it->oie_file);
4893                 if (rc == 0)
4894                         rc = 1;
4895         } else {
4896                 it->oie_dirent = it->oie_buf;
4897                 it->oie_it_dirent = 1;
4898         }
4899
4900         RETURN(rc);
4901 }
4902
4903 /**
4904  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4905  * to load a directory entry at a time and stored it in
4906  * iterator's in-memory data structure.
4907  *
4908  * \param di iterator's in memory structure
4909  *
4910  * \retval +ve iterator reached to end
4911  * \retval   0 iterator not reached to end
4912  * \retval -ve on error
4913  */
4914 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
4915 {
4916         struct osd_it_ea *it = (struct osd_it_ea *)di;
4917         int rc;
4918
4919         ENTRY;
4920
4921         if (it->oie_it_dirent < it->oie_rd_dirent) {
4922                 it->oie_dirent =
4923                         (void *) it->oie_dirent +
4924                         cfs_size_round(sizeof(struct osd_it_ea_dirent) +
4925                                        it->oie_dirent->oied_namelen);
4926                 it->oie_it_dirent++;
4927                 RETURN(0);
4928         } else {
4929                 if (it->oie_file.f_pos == ldiskfs_get_htree_eof(&it->oie_file))
4930                         rc = +1;
4931                 else
4932                         rc = osd_ldiskfs_it_fill(env, di);
4933         }
4934
4935         RETURN(rc);
4936 }
4937
4938 /**
4939  * Returns the key at current position from iterator's in memory structure.
4940  *
4941  * \param di iterator's in memory structure
4942  *
4943  * \retval key i.e. struct dt_key on success
4944  */
4945 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
4946                                     const struct dt_it *di)
4947 {
4948         struct osd_it_ea *it = (struct osd_it_ea *)di;
4949
4950         return (struct dt_key *)it->oie_dirent->oied_name;
4951 }
4952
4953 /**
4954  * Returns the key's size at current position from iterator's in memory structure.
4955  *
4956  * \param di iterator's in memory structure
4957  *
4958  * \retval key_size i.e. struct dt_key on success
4959  */
4960 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
4961 {
4962         struct osd_it_ea *it = (struct osd_it_ea *)di;
4963
4964         return it->oie_dirent->oied_namelen;
4965 }
4966
4967 static int
4968 osd_dirent_update(handle_t *jh, struct super_block *sb,
4969                   struct osd_it_ea_dirent *ent, struct lu_fid *fid,
4970                   struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de)
4971 {
4972         struct osd_fid_pack *rec;
4973         int                  rc;
4974         ENTRY;
4975
4976         LASSERT(de->file_type & LDISKFS_DIRENT_LUFID);
4977         LASSERT(de->rec_len >= de->name_len + sizeof(struct osd_fid_pack));
4978
4979         rc = ldiskfs_journal_get_write_access(jh, bh);
4980         if (rc != 0) {
4981                 CERROR("%.16s: fail to write access for update dirent: "
4982                        "name = %.*s, rc = %d\n",
4983                        LDISKFS_SB(sb)->s_es->s_volume_name,
4984                        ent->oied_namelen, ent->oied_name, rc);
4985                 RETURN(rc);
4986         }
4987
4988         rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
4989         fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
4990         rc = ldiskfs_journal_dirty_metadata(jh, bh);
4991         if (rc != 0)
4992                 CERROR("%.16s: fail to dirty metadata for update dirent: "
4993                        "name = %.*s, rc = %d\n",
4994                        LDISKFS_SB(sb)->s_es->s_volume_name,
4995                        ent->oied_namelen, ent->oied_name, rc);
4996
4997         RETURN(rc);
4998 }
4999
5000 static inline int
5001 osd_dirent_has_space(__u16 reclen, __u16 namelen, unsigned blocksize)
5002 {
5003         if (ldiskfs_rec_len_from_disk(reclen, blocksize) >=
5004             __LDISKFS_DIR_REC_LEN(namelen + 1 + sizeof(struct osd_fid_pack)))
5005                 return 1;
5006         else
5007                 return 0;
5008 }
5009
5010 static inline int
5011 osd_dot_dotdot_has_space(struct ldiskfs_dir_entry_2 *de, int dot_dotdot)
5012 {
5013         LASSERTF(dot_dotdot == 1 || dot_dotdot == 2,
5014                  "dot_dotdot = %d\n", dot_dotdot);
5015
5016         if (LDISKFS_DIR_REC_LEN(de) >=
5017             __LDISKFS_DIR_REC_LEN(dot_dotdot + 1 + sizeof(struct osd_fid_pack)))
5018                 return 1;
5019         else
5020                 return 0;
5021 }
5022
5023 static int
5024 osd_dirent_reinsert(const struct lu_env *env, handle_t *jh,
5025                     struct inode *dir, struct inode *inode,
5026                     struct osd_it_ea_dirent *ent, struct lu_fid *fid,
5027                     struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de,
5028                     struct htree_lock *hlock)
5029 {
5030         struct dentry               *dentry;
5031         struct osd_fid_pack         *rec;
5032         struct ldiskfs_dentry_param *ldp;
5033         int                          rc;
5034         ENTRY;
5035
5036         if (!LDISKFS_HAS_INCOMPAT_FEATURE(inode->i_sb,
5037                                           LDISKFS_FEATURE_INCOMPAT_DIRDATA))
5038                 RETURN(0);
5039
5040         /* There is enough space to hold the FID-in-dirent. */
5041         if (osd_dirent_has_space(de->rec_len, ent->oied_namelen,
5042                                  dir->i_sb->s_blocksize)) {
5043                 rc = ldiskfs_journal_get_write_access(jh, bh);
5044                 if (rc != 0) {
5045                         CERROR("%.16s: fail to write access for reinsert "
5046                                "dirent: name = %.*s, rc = %d\n",
5047                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5048                                ent->oied_namelen, ent->oied_name, rc);
5049                         RETURN(rc);
5050                 }
5051
5052                 de->name[de->name_len] = 0;
5053                 rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
5054                 rec->fp_len = sizeof(struct lu_fid) + 1;
5055                 fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
5056                 de->file_type |= LDISKFS_DIRENT_LUFID;
5057
5058                 rc = ldiskfs_journal_dirty_metadata(jh, bh);
5059                 if (rc != 0)
5060                         CERROR("%.16s: fail to dirty metadata for reinsert "
5061                                "dirent: name = %.*s, rc = %d\n",
5062                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5063                                ent->oied_namelen, ent->oied_name, rc);
5064
5065                 RETURN(rc);
5066         }
5067
5068         rc = ldiskfs_delete_entry(jh, dir, de, bh);
5069         if (rc != 0) {
5070                 CERROR("%.16s: fail to delete entry for reinsert dirent: "
5071                        "name = %.*s, rc = %d\n",
5072                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5073                        ent->oied_namelen, ent->oied_name, rc);
5074                 RETURN(rc);
5075         }
5076
5077         dentry = osd_child_dentry_by_inode(env, dir, ent->oied_name,
5078                                            ent->oied_namelen);
5079         ldp = (struct ldiskfs_dentry_param *)osd_oti_get(env)->oti_ldp;
5080         osd_get_ldiskfs_dirent_param(ldp, (const struct dt_rec *)fid);
5081         dentry->d_fsdata = (void *)ldp;
5082         ll_vfs_dq_init(dir);
5083         rc = osd_ldiskfs_add_entry(jh, dentry, inode, hlock);
5084         /* It is too bad, we cannot reinsert the name entry back.
5085          * That means we lose it! */
5086         if (rc != 0)
5087                 CERROR("%.16s: fail to insert entry for reinsert dirent: "
5088                        "name = %.*s, rc = %d\n",
5089                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5090                        ent->oied_namelen, ent->oied_name, rc);
5091
5092         RETURN(rc);
5093 }
5094
5095 static int
5096 osd_dirent_check_repair(const struct lu_env *env, struct osd_object *obj,
5097                         struct osd_it_ea *it, struct lu_fid *fid,
5098                         struct osd_inode_id *id, __u32 *attr)
5099 {
5100         struct osd_thread_info     *info        = osd_oti_get(env);
5101         struct lustre_mdt_attrs    *lma         = &info->oti_mdt_attrs;
5102         struct osd_device          *dev         = osd_obj2dev(obj);
5103         struct super_block         *sb          = osd_sb(dev);
5104         const char                 *devname     =
5105                                         LDISKFS_SB(sb)->s_es->s_volume_name;
5106         struct osd_it_ea_dirent    *ent         = it->oie_dirent;
5107         struct inode               *dir         = obj->oo_inode;
5108         struct htree_lock          *hlock       = NULL;
5109         struct buffer_head         *bh          = NULL;
5110         handle_t                   *jh          = NULL;
5111         struct ldiskfs_dir_entry_2 *de;
5112         struct dentry              *dentry;
5113         struct inode               *inode;
5114         int                         credits;
5115         int                         rc;
5116         int                         dot_dotdot  = 0;
5117         bool                        dirty       = false;
5118         ENTRY;
5119
5120         if (ent->oied_name[0] == '.') {
5121                 if (ent->oied_namelen == 1)
5122                         dot_dotdot = 1;
5123                 else if (ent->oied_namelen == 2 && ent->oied_name[1] == '.')
5124                         dot_dotdot = 2;
5125         }
5126
5127         dentry = osd_child_dentry_get(env, obj, ent->oied_name,
5128                                       ent->oied_namelen);
5129
5130         /* We need to ensure that the name entry is still valid.
5131          * Because it may be removed or renamed by other already.
5132          *
5133          * The unlink or rename operation will start journal before PDO lock,
5134          * so to avoid deadlock, here we need to start journal handle before
5135          * related PDO lock also. But because we do not know whether there
5136          * will be something to be repaired before PDO lock, we just start
5137          * journal without conditions.
5138          *
5139          * We may need to remove the name entry firstly, then insert back.
5140          * One credit is for user quota file update.
5141          * One credit is for group quota file update.
5142          * Two credits are for dirty inode. */
5143         credits = osd_dto_credits_noquota[DTO_INDEX_DELETE] +
5144                   osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1 + 1 + 2;
5145
5146 again:
5147         if (dev->od_dirent_journal) {
5148                 jh = osd_journal_start_sb(sb, LDISKFS_HT_MISC, credits);
5149                 if (IS_ERR(jh)) {
5150                         rc = PTR_ERR(jh);
5151                         CERROR("%.16s: fail to start trans for dirent "
5152                                "check_repair: credits %d, name %.*s, rc %d\n",
5153                                devname, credits, ent->oied_namelen,
5154                                ent->oied_name, rc);
5155                         RETURN(rc);
5156                 }
5157
5158                 if (obj->oo_hl_head != NULL) {
5159                         hlock = osd_oti_get(env)->oti_hlock;
5160                         /* "0" means exclusive lock for the whole directory.
5161                          * We need to prevent others access such name entry
5162                          * during the delete + insert. Neither HLOCK_ADD nor
5163                          * HLOCK_DEL cannot guarantee the atomicity. */
5164                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir, 0);
5165                 } else {
5166                         down_write(&obj->oo_ext_idx_sem);
5167                 }
5168         } else {
5169                 if (obj->oo_hl_head != NULL) {
5170                         hlock = osd_oti_get(env)->oti_hlock;
5171                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir,
5172                                            LDISKFS_HLOCK_LOOKUP);
5173                 } else {
5174                         down_read(&obj->oo_ext_idx_sem);
5175                 }
5176         }
5177
5178         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
5179         /* For dot/dotdot entry, if there is not enough space to hold the
5180          * FID-in-dirent, just keep them there. It only happens when the
5181          * device upgraded from 1.8 or restored from MDT file-level backup.
5182          * For the whole directory, only dot/dotdot entry have no FID-in-dirent
5183          * and needs to get FID from LMA when readdir, it will not affect the
5184          * performance much. */
5185         if ((bh == NULL) || (le32_to_cpu(de->inode) != ent->oied_ino) ||
5186             (dot_dotdot != 0 && !osd_dot_dotdot_has_space(de, dot_dotdot))) {
5187                 *attr |= LUDA_IGNORE;
5188                 GOTO(out_journal, rc = 0);
5189         }
5190
5191         osd_id_gen(id, ent->oied_ino, OSD_OII_NOGEN);
5192         inode = osd_iget(info, dev, id);
5193         if (IS_ERR(inode)) {
5194                 rc = PTR_ERR(inode);
5195                 if (rc == -ENOENT || rc == -ESTALE) {
5196                         *attr |= LUDA_IGNORE;
5197                         rc = 0;
5198                 }
5199
5200                 GOTO(out_journal, rc);
5201         }
5202
5203         /* skip the REMOTE_PARENT_DIR. */
5204         if (inode == dev->od_mdt_map->omm_remote_parent->d_inode)
5205                 GOTO(out_inode, rc = 0);
5206
5207         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
5208         if (rc == 0) {
5209                 LASSERT(!(lma->lma_compat & LMAC_NOT_IN_OI));
5210
5211                 if (fid_is_sane(fid)) {
5212                         /* FID-in-dirent is valid. */
5213                         if (lu_fid_eq(fid, &lma->lma_self_fid))
5214                                 GOTO(out_inode, rc = 0);
5215
5216                         /* Do not repair under dryrun mode. */
5217                         if (*attr & LUDA_VERIFY_DRYRUN) {
5218                                 *attr |= LUDA_REPAIR;
5219                                 GOTO(out_inode, rc = 0);
5220                         }
5221
5222                         if (!dev->od_dirent_journal) {
5223                                 iput(inode);
5224                                 brelse(bh);
5225                                 if (hlock != NULL)
5226                                         ldiskfs_htree_unlock(hlock);
5227                                 else
5228                                         up_read(&obj->oo_ext_idx_sem);
5229                                 dev->od_dirent_journal = 1;
5230                                 goto again;
5231                         }
5232
5233                         *fid = lma->lma_self_fid;
5234                         dirty = true;
5235                         /* Update the FID-in-dirent. */
5236                         rc = osd_dirent_update(jh, sb, ent, fid, bh, de);
5237                         if (rc == 0)
5238                                 *attr |= LUDA_REPAIR;
5239                 } else {
5240                         /* Do not repair under dryrun mode. */
5241                         if (*attr & LUDA_VERIFY_DRYRUN) {
5242                                 *fid = lma->lma_self_fid;
5243                                 *attr |= LUDA_REPAIR;
5244                                 GOTO(out_inode, rc = 0);
5245                         }
5246
5247                         if (!dev->od_dirent_journal) {
5248                                 iput(inode);
5249                                 brelse(bh);
5250                                 if (hlock != NULL)
5251                                         ldiskfs_htree_unlock(hlock);
5252                                 else
5253                                         up_read(&obj->oo_ext_idx_sem);
5254                                 dev->od_dirent_journal = 1;
5255                                 goto again;
5256                         }
5257
5258                         *fid = lma->lma_self_fid;
5259                         dirty = true;
5260                         /* Append the FID-in-dirent. */
5261                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
5262                                                  fid, bh, de, hlock);
5263                         if (rc == 0)
5264                                 *attr |= LUDA_REPAIR;
5265                 }
5266         } else if (rc == -ENODATA) {
5267                 /* Do not repair under dryrun mode. */
5268                 if (*attr & LUDA_VERIFY_DRYRUN) {
5269                         if (fid_is_sane(fid)) {
5270                                 *attr |= LUDA_REPAIR;
5271                         } else {
5272                                 lu_igif_build(fid, inode->i_ino,
5273                                               inode->i_generation);
5274                                 *attr |= LUDA_UPGRADE;
5275                         }
5276                         GOTO(out_inode, rc = 0);
5277                 }
5278
5279                 if (!dev->od_dirent_journal) {
5280                         iput(inode);
5281                         brelse(bh);
5282                         if (hlock != NULL)
5283                                 ldiskfs_htree_unlock(hlock);
5284                         else
5285                                 up_read(&obj->oo_ext_idx_sem);
5286                         dev->od_dirent_journal = 1;
5287                         goto again;
5288                 }
5289
5290                 dirty = true;
5291                 if (unlikely(fid_is_sane(fid))) {
5292                         /* FID-in-dirent exists, but FID-in-LMA is lost.
5293                          * Trust the FID-in-dirent, and add FID-in-LMA. */
5294                         rc = osd_ea_fid_set(info, inode, fid, 0, 0);
5295                         if (rc == 0)
5296                                 *attr |= LUDA_REPAIR;
5297                 } else {
5298                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
5299                         /* It is probably IGIF object. Only aappend the
5300                          * FID-in-dirent. OI scrub will process FID-in-LMA. */
5301                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
5302                                                  fid, bh, de, hlock);
5303                         if (rc == 0)
5304                                 *attr |= LUDA_UPGRADE;
5305                 }
5306         }
5307
5308         GOTO(out_inode, rc);
5309
5310 out_inode:
5311         iput(inode);
5312
5313 out_journal:
5314         brelse(bh);
5315         if (hlock != NULL) {
5316                 ldiskfs_htree_unlock(hlock);
5317         } else {
5318                 if (dev->od_dirent_journal)
5319                         up_write(&obj->oo_ext_idx_sem);
5320                 else
5321                         up_read(&obj->oo_ext_idx_sem);
5322         }
5323         if (jh != NULL)
5324                 ldiskfs_journal_stop(jh);
5325         if (rc >= 0 && !dirty)
5326                 dev->od_dirent_journal = 0;
5327         return rc;
5328 }
5329
5330 /**
5331  * Returns the value at current position from iterator's in memory structure.
5332  *
5333  * \param di struct osd_it_ea, iterator's in memory structure
5334  * \param attr attr requested for dirent.
5335  * \param lde lustre dirent
5336  *
5337  * \retval   0 no error and \param lde has correct lustre dirent.
5338  * \retval -ve on error
5339  */
5340 static inline int osd_it_ea_rec(const struct lu_env *env,
5341                                 const struct dt_it *di,
5342                                 struct dt_rec *dtrec, __u32 attr)
5343 {
5344         struct osd_it_ea       *it    = (struct osd_it_ea *)di;
5345         struct osd_object      *obj   = it->oie_obj;
5346         struct osd_device      *dev   = osd_obj2dev(obj);
5347         struct osd_scrub       *scrub = &dev->od_scrub;
5348         struct scrub_file      *sf    = &scrub->os_file;
5349         struct osd_thread_info *oti   = osd_oti_get(env);
5350         struct osd_inode_id    *id    = &oti->oti_id;
5351         struct osd_idmap_cache *oic   = &oti->oti_cache;
5352         struct lu_fid          *fid   = &it->oie_dirent->oied_fid;
5353         struct lu_dirent       *lde   = (struct lu_dirent *)dtrec;
5354         __u32                   ino   = it->oie_dirent->oied_ino;
5355         int                     rc    = 0;
5356         ENTRY;
5357
5358         if (attr & LUDA_VERIFY) {
5359                 attr |= LUDA_TYPE;
5360                 if (unlikely(ino == osd_sb(dev)->s_root->d_inode->i_ino)) {
5361                         attr |= LUDA_IGNORE;
5362                         rc = 0;
5363                 } else {
5364                         rc = osd_dirent_check_repair(env, obj, it, fid, id,
5365                                                      &attr);
5366                 }
5367         } else {
5368                 attr &= ~LU_DIRENT_ATTRS_MASK;
5369                 if (!fid_is_sane(fid)) {
5370                         if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP) &&
5371                             likely(it->oie_dirent->oied_namelen != 2 ||
5372                                    it->oie_dirent->oied_name[0] != '.' ||
5373                                    it->oie_dirent->oied_name[1] != '.'))
5374                                 RETURN(-ENOENT);
5375
5376                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
5377                 } else {
5378                         osd_id_gen(id, ino, OSD_OII_NOGEN);
5379                 }
5380         }
5381
5382         /* Pack the entry anyway, at least the offset is right. */
5383         osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off,
5384                            it->oie_dirent->oied_name,
5385                            it->oie_dirent->oied_namelen,
5386                            it->oie_dirent->oied_type, attr);
5387
5388         if (rc < 0)
5389                 RETURN(rc);
5390
5391         if (osd_remote_fid(env, dev, fid))
5392                 RETURN(0);
5393
5394         if (likely(!(attr & LUDA_IGNORE)))
5395                 rc = osd_add_oi_cache(oti, dev, id, fid);
5396
5397         if (!(attr & LUDA_VERIFY) &&
5398             (scrub->os_pos_current <= ino) &&
5399             ((sf->sf_flags & SF_INCONSISTENT) ||
5400              (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
5401              ldiskfs_test_bit(osd_oi_fid2idx(dev, fid), sf->sf_oi_bitmap)))
5402                 osd_consistency_check(oti, dev, oic);
5403
5404         RETURN(rc);
5405 }
5406
5407 /**
5408  * Returns the record size size at current position.
5409  *
5410  * This function will return record(lu_dirent) size in bytes.
5411  *
5412  * \param[in] env       execution environment
5413  * \param[in] di        iterator's in memory structure
5414  * \param[in] attr      attribute of the entry, only requires LUDA_TYPE to
5415  *                      calculate the lu_dirent size.
5416  *
5417  * \retval      record size(in bytes & in memory) of the current lu_dirent
5418  *              entry.
5419  */
5420 static int osd_it_ea_rec_size(const struct lu_env *env, const struct dt_it *di,
5421                               __u32 attr)
5422 {
5423         struct osd_it_ea *it = (struct osd_it_ea *)di;
5424
5425         return lu_dirent_calc_size(it->oie_dirent->oied_namelen, attr);
5426 }
5427
5428 /**
5429  * Returns a cookie for current position of the iterator head, so that
5430  * user can use this cookie to load/start the iterator next time.
5431  *
5432  * \param di iterator's in memory structure
5433  *
5434  * \retval cookie for current position, on success
5435  */
5436 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
5437 {
5438         struct osd_it_ea *it = (struct osd_it_ea *)di;
5439
5440         return it->oie_dirent->oied_off;
5441 }
5442
5443 /**
5444  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
5445  * to load a directory entry at a time and stored it i inn,
5446  * in iterator's in-memory data structure.
5447  *
5448  * \param di struct osd_it_ea, iterator's in memory structure
5449  *
5450  * \retval +ve on success
5451  * \retval -ve on error
5452  */
5453 static int osd_it_ea_load(const struct lu_env *env,
5454                           const struct dt_it *di, __u64 hash)
5455 {
5456         struct osd_it_ea *it = (struct osd_it_ea *)di;
5457         int rc;
5458
5459         ENTRY;
5460         it->oie_file.f_pos = hash;
5461
5462         rc =  osd_ldiskfs_it_fill(env, di);
5463         if (rc > 0)
5464                 rc = -ENODATA;
5465
5466         if (rc == 0)
5467                 rc = +1;
5468
5469         RETURN(rc);
5470 }
5471
5472 /**
5473  * Index lookup function for interoperability mode (b11826).
5474  *
5475  * \param key,  key i.e. file name to be searched
5476  *
5477  * \retval +ve, on success
5478  * \retval -ve, on error
5479  */
5480 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
5481                                struct dt_rec *rec, const struct dt_key *key,
5482                                struct lustre_capa *capa)
5483 {
5484         struct osd_object *obj = osd_dt_obj(dt);
5485         int rc = 0;
5486
5487         ENTRY;
5488
5489         LASSERT(S_ISDIR(obj->oo_inode->i_mode));
5490         LINVRNT(osd_invariant(obj));
5491
5492         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
5493                 return -EACCES;
5494
5495         rc = osd_ea_lookup_rec(env, obj, rec, key);
5496         if (rc == 0)
5497                 rc = +1;
5498         RETURN(rc);
5499 }
5500
5501 /**
5502  * Index and Iterator operations for interoperability
5503  * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
5504  */
5505 static const struct dt_index_operations osd_index_ea_ops = {
5506         .dio_lookup         = osd_index_ea_lookup,
5507         .dio_declare_insert = osd_index_declare_ea_insert,
5508         .dio_insert         = osd_index_ea_insert,
5509         .dio_declare_delete = osd_index_declare_ea_delete,
5510         .dio_delete         = osd_index_ea_delete,
5511         .dio_it     = {
5512                 .init     = osd_it_ea_init,
5513                 .fini     = osd_it_ea_fini,
5514                 .get      = osd_it_ea_get,
5515                 .put      = osd_it_ea_put,
5516                 .next     = osd_it_ea_next,
5517                 .key      = osd_it_ea_key,
5518                 .key_size = osd_it_ea_key_size,
5519                 .rec      = osd_it_ea_rec,
5520                 .rec_size = osd_it_ea_rec_size,
5521                 .store    = osd_it_ea_store,
5522                 .load     = osd_it_ea_load
5523         }
5524 };
5525
5526 static void *osd_key_init(const struct lu_context *ctx,
5527                           struct lu_context_key *key)
5528 {
5529         struct osd_thread_info *info;
5530
5531         OBD_ALLOC_PTR(info);
5532         if (info == NULL)
5533                 return ERR_PTR(-ENOMEM);
5534
5535         OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5536         if (info->oti_it_ea_buf == NULL)
5537                 goto out_free_info;
5538
5539         info->oti_env = container_of(ctx, struct lu_env, le_ctx);
5540
5541         info->oti_hlock = ldiskfs_htree_lock_alloc();
5542         if (info->oti_hlock == NULL)
5543                 goto out_free_ea;
5544
5545         return info;
5546
5547  out_free_ea:
5548         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5549  out_free_info:
5550         OBD_FREE_PTR(info);
5551         return ERR_PTR(-ENOMEM);
5552 }
5553
5554 static void osd_key_fini(const struct lu_context *ctx,
5555                          struct lu_context_key *key, void* data)
5556 {
5557         struct osd_thread_info *info = data;
5558
5559         if (info->oti_hlock != NULL)
5560                 ldiskfs_htree_lock_free(info->oti_hlock);
5561         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5562         lu_buf_free(&info->oti_iobuf.dr_pg_buf);
5563         lu_buf_free(&info->oti_iobuf.dr_bl_buf);
5564         OBD_FREE_PTR(info);
5565 }
5566
5567 static void osd_key_exit(const struct lu_context *ctx,
5568                          struct lu_context_key *key, void *data)
5569 {
5570         struct osd_thread_info *info = data;
5571
5572         LASSERT(info->oti_r_locks == 0);
5573         LASSERT(info->oti_w_locks == 0);
5574         LASSERT(info->oti_txns    == 0);
5575 }
5576
5577 /* type constructor/destructor: osd_type_init, osd_type_fini */
5578 LU_TYPE_INIT_FINI(osd, &osd_key);
5579
5580 struct lu_context_key osd_key = {
5581         .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
5582         .lct_init = osd_key_init,
5583         .lct_fini = osd_key_fini,
5584         .lct_exit = osd_key_exit
5585 };
5586
5587
5588 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
5589                            const char *name, struct lu_device *next)
5590 {
5591         struct osd_device *osd = osd_dev(d);
5592
5593         if (strlcpy(osd->od_svname, name, sizeof(osd->od_svname))
5594             >= sizeof(osd->od_svname))
5595                 return -E2BIG;
5596         return osd_procfs_init(osd, name);
5597 }
5598
5599 static int osd_fid_init(const struct lu_env *env, struct osd_device *osd)
5600 {
5601         struct seq_server_site  *ss = osd_seq_site(osd);
5602         int                     rc;
5603         ENTRY;
5604
5605         if (osd->od_is_ost || osd->od_cl_seq != NULL)
5606                 RETURN(0);
5607
5608         if (unlikely(ss == NULL))
5609                 RETURN(-ENODEV);
5610
5611         OBD_ALLOC_PTR(osd->od_cl_seq);
5612         if (osd->od_cl_seq == NULL)
5613                 RETURN(-ENOMEM);
5614
5615         rc = seq_client_init(osd->od_cl_seq, NULL, LUSTRE_SEQ_METADATA,
5616                              osd->od_svname, ss->ss_server_seq);
5617
5618         if (rc != 0) {
5619                 OBD_FREE_PTR(osd->od_cl_seq);
5620                 osd->od_cl_seq = NULL;
5621         }
5622
5623         RETURN(rc);
5624 }
5625
5626 static void osd_fid_fini(const struct lu_env *env, struct osd_device *osd)
5627 {
5628         if (osd->od_cl_seq == NULL)
5629                 return;
5630
5631         seq_client_fini(osd->od_cl_seq);
5632         OBD_FREE_PTR(osd->od_cl_seq);
5633         osd->od_cl_seq = NULL;
5634 }
5635
5636 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
5637 {
5638         ENTRY;
5639
5640         /* shutdown quota slave instance associated with the device */
5641         if (o->od_quota_slave != NULL) {
5642                 qsd_fini(env, o->od_quota_slave);
5643                 o->od_quota_slave = NULL;
5644         }
5645
5646         osd_fid_fini(env, o);
5647
5648         RETURN(0);
5649 }
5650
5651 static void osd_umount(const struct lu_env *env, struct osd_device *o)
5652 {
5653         ENTRY;
5654
5655         if (o->od_mnt != NULL) {
5656                 shrink_dcache_sb(osd_sb(o));
5657                 osd_sync(env, &o->od_dt_dev);
5658
5659                 mntput(o->od_mnt);
5660                 o->od_mnt = NULL;
5661         }
5662
5663         EXIT;
5664 }
5665
5666 static int osd_mount(const struct lu_env *env,
5667                      struct osd_device *o, struct lustre_cfg *cfg)
5668 {
5669         const char              *name  = lustre_cfg_string(cfg, 0);
5670         const char              *dev  = lustre_cfg_string(cfg, 1);
5671         const char              *opts;
5672         unsigned long            page, s_flags, lmd_flags = 0;
5673         struct page             *__page;
5674         struct file_system_type *type;
5675         char                    *options = NULL;
5676         char                    *str;
5677         struct osd_thread_info  *info = osd_oti_get(env);
5678         struct lu_fid           *fid = &info->oti_fid;
5679         struct inode            *inode;
5680         int                      rc = 0;
5681         ENTRY;
5682
5683         if (o->od_mnt != NULL)
5684                 RETURN(0);
5685
5686         if (strlen(dev) >= sizeof(o->od_mntdev))
5687                 RETURN(-E2BIG);
5688         strcpy(o->od_mntdev, dev);
5689
5690         OBD_PAGE_ALLOC(__page, GFP_IOFS);
5691         if (__page == NULL)
5692                 GOTO(out, rc = -ENOMEM);
5693
5694         str = lustre_cfg_string(cfg, 2);
5695         s_flags = simple_strtoul(str, NULL, 0);
5696         str = strstr(str, ":");
5697         if (str)
5698                 lmd_flags = simple_strtoul(str + 1, NULL, 0);
5699         opts = lustre_cfg_string(cfg, 3);
5700         page = (unsigned long)page_address(__page);
5701         options = (char *)page;
5702         *options = '\0';
5703         if (opts == NULL)
5704                 strcat(options, "user_xattr,acl");
5705         else
5706                 strcat(options, opts);
5707
5708         /* Glom up mount options */
5709         if (*options != '\0')
5710                 strcat(options, ",");
5711         strlcat(options, "no_mbcache", PAGE_CACHE_SIZE);
5712
5713         type = get_fs_type("ldiskfs");
5714         if (!type) {
5715                 CERROR("%s: cannot find ldiskfs module\n", name);
5716                 GOTO(out, rc = -ENODEV);
5717         }
5718
5719         o->od_mnt = vfs_kern_mount(type, s_flags, dev, options);
5720         module_put(type->owner);
5721
5722         if (IS_ERR(o->od_mnt)) {
5723                 rc = PTR_ERR(o->od_mnt);
5724                 o->od_mnt = NULL;
5725                 CERROR("%s: can't mount %s: %d\n", name, dev, rc);
5726                 GOTO(out, rc);
5727         }
5728
5729 #ifdef HAVE_DEV_SET_RDONLY
5730         if (dev_check_rdonly(o->od_mnt->mnt_sb->s_bdev)) {
5731                 CERROR("%s: underlying device %s is marked as read-only. "
5732                        "Setup failed\n", name, dev);
5733                 GOTO(out_mnt, rc = -EROFS);
5734         }
5735 #endif
5736
5737         if (!LDISKFS_HAS_COMPAT_FEATURE(o->od_mnt->mnt_sb,
5738                                         LDISKFS_FEATURE_COMPAT_HAS_JOURNAL)) {
5739                 CERROR("%s: device %s is mounted w/o journal\n", name, dev);
5740                 GOTO(out_mnt, rc = -EINVAL);
5741         }
5742
5743 #ifdef LDISKFS_MOUNT_DIRDATA
5744         if (LDISKFS_HAS_INCOMPAT_FEATURE(o->od_mnt->mnt_sb,
5745                                          LDISKFS_FEATURE_INCOMPAT_DIRDATA))
5746                 LDISKFS_SB(osd_sb(o))->s_mount_opt |= LDISKFS_MOUNT_DIRDATA;
5747 #endif
5748         inode = osd_sb(o)->s_root->d_inode;
5749         lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
5750         rc = osd_ea_fid_set(info, inode, fid, LMAC_NOT_IN_OI, 0);
5751         if (rc != 0) {
5752                 CERROR("%s: failed to set lma on %s root inode\n", name, dev);
5753                 GOTO(out_mnt, rc);
5754         }
5755
5756         if (lmd_flags & LMD_FLG_NOSCRUB)
5757                 o->od_noscrub = 1;
5758
5759         GOTO(out, rc = 0);
5760
5761 out_mnt:
5762         mntput(o->od_mnt);
5763         o->od_mnt = NULL;
5764
5765 out:
5766         if (__page)
5767                 OBD_PAGE_FREE(__page);
5768
5769         return rc;
5770 }
5771
5772 static struct lu_device *osd_device_fini(const struct lu_env *env,
5773                                          struct lu_device *d)
5774 {
5775         struct osd_device *o = osd_dev(d);
5776         ENTRY;
5777
5778         osd_shutdown(env, o);
5779         osd_procfs_fini(o);
5780         osd_scrub_cleanup(env, o);
5781         osd_obj_map_fini(o);
5782         osd_umount(env, o);
5783
5784         RETURN(NULL);
5785 }
5786
5787 static int osd_device_init0(const struct lu_env *env,
5788                             struct osd_device *o,
5789                             struct lustre_cfg *cfg)
5790 {
5791         struct lu_device        *l = osd2lu_dev(o);
5792         struct osd_thread_info *info;
5793         int                     rc;
5794         int                     cplen = 0;
5795
5796         /* if the module was re-loaded, env can loose its keys */
5797         rc = lu_env_refill((struct lu_env *) env);
5798         if (rc)
5799                 GOTO(out, rc);
5800         info = osd_oti_get(env);
5801         LASSERT(info);
5802
5803         l->ld_ops = &osd_lu_ops;
5804         o->od_dt_dev.dd_ops = &osd_dt_ops;
5805
5806         spin_lock_init(&o->od_osfs_lock);
5807         mutex_init(&o->od_otable_mutex);
5808
5809         o->od_capa_hash = init_capa_hash();
5810         if (o->od_capa_hash == NULL)
5811                 GOTO(out, rc = -ENOMEM);
5812
5813         o->od_read_cache = 1;
5814         o->od_writethrough_cache = 1;
5815         o->od_readcache_max_filesize = OSD_MAX_CACHE_SIZE;
5816
5817         rc = osd_mount(env, o, cfg);
5818         if (rc)
5819                 GOTO(out_capa, rc);
5820
5821         cplen = strlcpy(o->od_svname, lustre_cfg_string(cfg, 4),
5822                         sizeof(o->od_svname));
5823         if (cplen >= sizeof(o->od_svname)) {
5824                 rc = -E2BIG;
5825                 GOTO(out_mnt, rc);
5826         }
5827
5828         if (server_name_is_ost(o->od_svname))
5829                 o->od_is_ost = 1;
5830
5831         rc = osd_obj_map_init(env, o);
5832         if (rc != 0)
5833                 GOTO(out_mnt, rc);
5834
5835         rc = lu_site_init(&o->od_site, l);
5836         if (rc != 0)
5837                 GOTO(out_compat, rc);
5838         o->od_site.ls_bottom_dev = l;
5839
5840         rc = lu_site_init_finish(&o->od_site);
5841         if (rc != 0)
5842                 GOTO(out_site, rc);
5843
5844         /* self-repair LMA by default */
5845         o->od_lma_self_repair = 1;
5846
5847         CFS_INIT_LIST_HEAD(&o->od_ios_list);
5848         /* setup scrub, including OI files initialization */
5849         rc = osd_scrub_setup(env, o);
5850         if (rc < 0)
5851                 GOTO(out_site, rc);
5852
5853         rc = osd_procfs_init(o, o->od_svname);
5854         if (rc != 0) {
5855                 CERROR("%s: can't initialize procfs: rc = %d\n",
5856                        o->od_svname, rc);
5857                 GOTO(out_scrub, rc);
5858         }
5859
5860         LASSERT(l->ld_site->ls_linkage.next && l->ld_site->ls_linkage.prev);
5861
5862         /* initialize quota slave instance */
5863         o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
5864                                      o->od_proc_entry);
5865         if (IS_ERR(o->od_quota_slave)) {
5866                 rc = PTR_ERR(o->od_quota_slave);
5867                 o->od_quota_slave = NULL;
5868                 GOTO(out_procfs, rc);
5869         }
5870
5871         RETURN(0);
5872
5873 out_procfs:
5874         osd_procfs_fini(o);
5875 out_scrub:
5876         osd_scrub_cleanup(env, o);
5877 out_site:
5878         lu_site_fini(&o->od_site);
5879 out_compat:
5880         osd_obj_map_fini(o);
5881 out_mnt:
5882         osd_umount(env, o);
5883 out_capa:
5884         cleanup_capa_hash(o->od_capa_hash);
5885 out:
5886         return rc;
5887 }
5888
5889 static struct lu_device *osd_device_alloc(const struct lu_env *env,
5890                                           struct lu_device_type *t,
5891                                           struct lustre_cfg *cfg)
5892 {
5893         struct osd_device *o;
5894         int                rc;
5895
5896         OBD_ALLOC_PTR(o);
5897         if (o == NULL)
5898                 return ERR_PTR(-ENOMEM);
5899
5900         rc = dt_device_init(&o->od_dt_dev, t);
5901         if (rc == 0) {
5902                 /* Because the ctx might be revived in dt_device_init,
5903                  * refill the env here */
5904                 lu_env_refill((struct lu_env *)env);
5905                 rc = osd_device_init0(env, o, cfg);
5906                 if (rc)
5907                         dt_device_fini(&o->od_dt_dev);
5908         }
5909
5910         if (unlikely(rc != 0))
5911                 OBD_FREE_PTR(o);
5912
5913         return rc == 0 ? osd2lu_dev(o) : ERR_PTR(rc);
5914 }
5915
5916 static struct lu_device *osd_device_free(const struct lu_env *env,
5917                                          struct lu_device *d)
5918 {
5919         struct osd_device *o = osd_dev(d);
5920         ENTRY;
5921
5922         cleanup_capa_hash(o->od_capa_hash);
5923         /* XXX: make osd top device in order to release reference */
5924         d->ld_site->ls_top_dev = d;
5925         lu_site_purge(env, d->ld_site, -1);
5926         if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
5927                 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
5928                 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
5929         }
5930         lu_site_fini(&o->od_site);
5931         dt_device_fini(&o->od_dt_dev);
5932         OBD_FREE_PTR(o);
5933         RETURN(NULL);
5934 }
5935
5936 static int osd_process_config(const struct lu_env *env,
5937                               struct lu_device *d, struct lustre_cfg *cfg)
5938 {
5939         struct osd_device               *o = osd_dev(d);
5940         int                             rc;
5941         ENTRY;
5942
5943         switch (cfg->lcfg_command) {
5944         case LCFG_SETUP:
5945                 rc = osd_mount(env, o, cfg);
5946                 break;
5947         case LCFG_CLEANUP:
5948                 lu_dev_del_linkage(d->ld_site, d);
5949                 rc = osd_shutdown(env, o);
5950                 break;
5951         case LCFG_PARAM:
5952                 LASSERT(&o->od_dt_dev);
5953                 rc = class_process_proc_seq_param(PARAM_OSD,
5954                                                   lprocfs_osd_obd_vars,
5955                                                   cfg, &o->od_dt_dev);
5956                 if (rc > 0 || rc == -ENOSYS)
5957                         rc = class_process_proc_seq_param(PARAM_OST,
5958                                                           lprocfs_osd_obd_vars,
5959                                                           cfg, &o->od_dt_dev);
5960                 break;
5961         default:
5962                 rc = -ENOSYS;
5963         }
5964
5965         RETURN(rc);
5966 }
5967
5968 static int osd_recovery_complete(const struct lu_env *env,
5969                                  struct lu_device *d)
5970 {
5971         struct osd_device       *osd = osd_dev(d);
5972         int                      rc = 0;
5973         ENTRY;
5974
5975         if (osd->od_quota_slave == NULL)
5976                 RETURN(0);
5977
5978         /* start qsd instance on recovery completion, this notifies the quota
5979          * slave code that we are about to process new requests now */
5980         rc = qsd_start(env, osd->od_quota_slave);
5981         RETURN(rc);
5982 }
5983
5984 /*
5985  * we use exports to track all osd users
5986  */
5987 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
5988                            struct obd_device *obd, struct obd_uuid *cluuid,
5989                            struct obd_connect_data *data, void *localdata)
5990 {
5991         struct osd_device    *osd = osd_dev(obd->obd_lu_dev);
5992         struct lustre_handle  conn;
5993         int                   rc;
5994         ENTRY;
5995
5996         CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
5997
5998         rc = class_connect(&conn, obd, cluuid);
5999         if (rc)
6000                 RETURN(rc);
6001
6002         *exp = class_conn2export(&conn);
6003
6004         spin_lock(&osd->od_osfs_lock);
6005         osd->od_connects++;
6006         spin_unlock(&osd->od_osfs_lock);
6007
6008         RETURN(0);
6009 }
6010
6011 /*
6012  * once last export (we don't count self-export) disappeared
6013  * osd can be released
6014  */
6015 static int osd_obd_disconnect(struct obd_export *exp)
6016 {
6017         struct obd_device *obd = exp->exp_obd;
6018         struct osd_device *osd = osd_dev(obd->obd_lu_dev);
6019         int                rc, release = 0;
6020         ENTRY;
6021
6022         /* Only disconnect the underlying layers on the final disconnect. */
6023         spin_lock(&osd->od_osfs_lock);
6024         osd->od_connects--;
6025         if (osd->od_connects == 0)
6026                 release = 1;
6027         spin_unlock(&osd->od_osfs_lock);
6028
6029         rc = class_disconnect(exp); /* bz 9811 */
6030
6031         if (rc == 0 && release)
6032                 class_manual_cleanup(obd);
6033         RETURN(rc);
6034 }
6035
6036 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
6037                        struct lu_device *dev)
6038 {
6039         struct osd_device *osd = osd_dev(dev);
6040         int                result = 0;
6041         ENTRY;
6042
6043         if (osd->od_quota_slave != NULL) {
6044                 /* set up quota slave objects */
6045                 result = qsd_prepare(env, osd->od_quota_slave);
6046                 if (result != 0)
6047                         RETURN(result);
6048         }
6049
6050         result = osd_fid_init(env, osd);
6051
6052         RETURN(result);
6053 }
6054
6055 int osd_fid_alloc(const struct lu_env *env, struct obd_export *exp,
6056                   struct lu_fid *fid, struct md_op_data *op_data)
6057 {
6058         struct osd_device *osd = osd_dev(exp->exp_obd->obd_lu_dev);
6059
6060         return seq_client_alloc_fid(env, osd->od_cl_seq, fid);
6061 }
6062
6063 static const struct lu_object_operations osd_lu_obj_ops = {
6064         .loo_object_init      = osd_object_init,
6065         .loo_object_delete    = osd_object_delete,
6066         .loo_object_release   = osd_object_release,
6067         .loo_object_free      = osd_object_free,
6068         .loo_object_print     = osd_object_print,
6069         .loo_object_invariant = osd_object_invariant
6070 };
6071
6072 const struct lu_device_operations osd_lu_ops = {
6073         .ldo_object_alloc      = osd_object_alloc,
6074         .ldo_process_config    = osd_process_config,
6075         .ldo_recovery_complete = osd_recovery_complete,
6076         .ldo_prepare           = osd_prepare,
6077 };
6078
6079 static const struct lu_device_type_operations osd_device_type_ops = {
6080         .ldto_init = osd_type_init,
6081         .ldto_fini = osd_type_fini,
6082
6083         .ldto_start = osd_type_start,
6084         .ldto_stop  = osd_type_stop,
6085
6086         .ldto_device_alloc = osd_device_alloc,
6087         .ldto_device_free  = osd_device_free,
6088
6089         .ldto_device_init    = osd_device_init,
6090         .ldto_device_fini    = osd_device_fini
6091 };
6092
6093 struct lu_device_type osd_device_type = {
6094         .ldt_tags     = LU_DEVICE_DT,
6095         .ldt_name     = LUSTRE_OSD_LDISKFS_NAME,
6096         .ldt_ops      = &osd_device_type_ops,
6097         .ldt_ctx_tags = LCT_LOCAL,
6098 };
6099
6100 /*
6101  * lprocfs legacy support.
6102  */
6103 static struct obd_ops osd_obd_device_ops = {
6104         .o_owner = THIS_MODULE,
6105         .o_connect      = osd_obd_connect,
6106         .o_disconnect   = osd_obd_disconnect,
6107         .o_fid_alloc    = osd_fid_alloc,
6108 };
6109
6110 static int __init osd_mod_init(void)
6111 {
6112         int rc;
6113
6114         osd_oi_mod_init();
6115
6116         rc = lu_kmem_init(ldiskfs_caches);
6117         if (rc)
6118                 return rc;
6119
6120         rc = class_register_type(&osd_obd_device_ops, NULL, true,
6121                                  lprocfs_osd_module_vars,
6122 #ifndef HAVE_ONLY_PROCFS_SEQ
6123                                  NULL,
6124 #endif
6125                                  LUSTRE_OSD_LDISKFS_NAME, &osd_device_type);
6126         if (rc)
6127                 lu_kmem_fini(ldiskfs_caches);
6128         return rc;
6129 }
6130
6131 static void __exit osd_mod_exit(void)
6132 {
6133         class_unregister_type(LUSTRE_OSD_LDISKFS_NAME);
6134         lu_kmem_fini(ldiskfs_caches);
6135 }
6136
6137 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6138 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_LDISKFS_NAME")");
6139 MODULE_LICENSE("GPL");
6140
6141 cfs_module(osd, "0.1.0", osd_mod_init, osd_mod_exit);