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         osd_fini_iobuf(oti->oti_dev, iobuf);
1155         if (!rc)
1156                 rc = iobuf->dr_error;
1157
1158         RETURN(rc);
1159 }
1160
1161 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
1162 {
1163         struct osd_thandle *oh = container_of0(th, struct osd_thandle,
1164                                                ot_super);
1165
1166         LASSERT(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC);
1167         LASSERT(&dcb->dcb_func != NULL);
1168         cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
1169
1170         return 0;
1171 }
1172
1173 /*
1174  * Called just before object is freed. Releases all resources except for
1175  * object itself (that is released by osd_object_free()).
1176  *
1177  * Concurrency: no concurrent access is possible that late in object
1178  * life-cycle.
1179  */
1180 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
1181 {
1182         struct osd_object *obj   = osd_obj(l);
1183         struct inode      *inode = obj->oo_inode;
1184
1185         LINVRNT(osd_invariant(obj));
1186
1187         /*
1188          * If object is unlinked remove fid->ino mapping from object index.
1189          */
1190
1191         osd_index_fini(obj);
1192         if (inode != NULL) {
1193                 struct qsd_instance     *qsd = osd_obj2dev(obj)->od_quota_slave;
1194                 qid_t                    uid = inode->i_uid;
1195                 qid_t                    gid = inode->i_gid;
1196
1197                 iput(inode);
1198                 obj->oo_inode = NULL;
1199
1200                 if (qsd != NULL) {
1201                         struct osd_thread_info  *info = osd_oti_get(env);
1202                         struct lquota_id_info   *qi = &info->oti_qi;
1203
1204                         /* Release granted quota to master if necessary */
1205                         qi->lqi_id.qid_uid = uid;
1206                         qsd_op_adjust(env, qsd, &qi->lqi_id, USRQUOTA);
1207
1208                         qi->lqi_id.qid_uid = gid;
1209                         qsd_op_adjust(env, qsd, &qi->lqi_id, GRPQUOTA);
1210                 }
1211         }
1212 }
1213
1214 /*
1215  * Concurrency: ->loo_object_release() is called under site spin-lock.
1216  */
1217 static void osd_object_release(const struct lu_env *env,
1218                                struct lu_object *l)
1219 {
1220 }
1221
1222 /*
1223  * Concurrency: shouldn't matter.
1224  */
1225 static int osd_object_print(const struct lu_env *env, void *cookie,
1226                             lu_printer_t p, const struct lu_object *l)
1227 {
1228         struct osd_object *o = osd_obj(l);
1229         struct iam_descr  *d;
1230
1231         if (o->oo_dir != NULL)
1232                 d = o->oo_dir->od_container.ic_descr;
1233         else
1234                 d = NULL;
1235         return (*p)(env, cookie,
1236                     LUSTRE_OSD_LDISKFS_NAME"-object@%p(i:%p:%lu/%u)[%s]",
1237                     o, o->oo_inode,
1238                     o->oo_inode ? o->oo_inode->i_ino : 0UL,
1239                     o->oo_inode ? o->oo_inode->i_generation : 0,
1240                     d ? d->id_ops->id_name : "plain");
1241 }
1242
1243 #define GRANT_FOR_LOCAL_OIDS 32 /* 128kB for last_rcvd, quota files, ... */
1244
1245 /*
1246  * Concurrency: shouldn't matter.
1247  */
1248 int osd_statfs(const struct lu_env *env, struct dt_device *d,
1249                struct obd_statfs *sfs)
1250 {
1251         struct osd_device  *osd = osd_dt_dev(d);
1252         struct super_block *sb = osd_sb(osd);
1253         struct kstatfs     *ksfs;
1254         int result = 0;
1255
1256         if (unlikely(osd->od_mnt == NULL))
1257                 return -EINPROGRESS;
1258
1259         /* osd_lproc.c call this without env, allocate ksfs for that case */
1260         if (unlikely(env == NULL)) {
1261                 OBD_ALLOC_PTR(ksfs);
1262                 if (ksfs == NULL)
1263                         return -ENOMEM;
1264         } else {
1265                 ksfs = &osd_oti_get(env)->oti_ksfs;
1266         }
1267
1268         spin_lock(&osd->od_osfs_lock);
1269         result = sb->s_op->statfs(sb->s_root, ksfs);
1270         if (likely(result == 0)) { /* N.B. statfs can't really fail */
1271                 statfs_pack(sfs, ksfs);
1272                 if (sb->s_flags & MS_RDONLY)
1273                         sfs->os_state = OS_STATE_READONLY;
1274         }
1275
1276         spin_unlock(&osd->od_osfs_lock);
1277
1278         if (unlikely(env == NULL))
1279                 OBD_FREE_PTR(ksfs);
1280
1281         /* Reserve a small amount of space for local objects like last_rcvd,
1282          * llog, quota files, ... */
1283         if (sfs->os_bavail <= GRANT_FOR_LOCAL_OIDS) {
1284                 sfs->os_bavail = 0;
1285         } else {
1286                 sfs->os_bavail -= GRANT_FOR_LOCAL_OIDS;
1287                 /** Take out metadata overhead for indirect blocks */
1288                 sfs->os_bavail -= sfs->os_bavail >> (sb->s_blocksize_bits - 3);
1289         }
1290
1291         return result;
1292 }
1293
1294 /**
1295  * Estimate space needed for file creations. We assume the largest filename
1296  * which is 2^64 - 1, hence a filename of 20 chars.
1297  * This is 28 bytes per object which is 28MB for 1M objects ... no so bad.
1298  */
1299 #ifdef __LDISKFS_DIR_REC_LEN
1300 #define PER_OBJ_USAGE __LDISKFS_DIR_REC_LEN(20)
1301 #else
1302 #define PER_OBJ_USAGE LDISKFS_DIR_REC_LEN(20)
1303 #endif
1304
1305 /*
1306  * Concurrency: doesn't access mutable data.
1307  */
1308 static void osd_conf_get(const struct lu_env *env,
1309                          const struct dt_device *dev,
1310                          struct dt_device_param *param)
1311 {
1312         struct super_block *sb = osd_sb(osd_dt_dev(dev));
1313         int                ea_overhead;
1314
1315         /*
1316          * XXX should be taken from not-yet-existing fs abstraction layer.
1317          */
1318         param->ddp_max_name_len = LDISKFS_NAME_LEN;
1319         param->ddp_max_nlink    = LDISKFS_LINK_MAX;
1320         param->ddp_block_shift  = sb->s_blocksize_bits;
1321         param->ddp_mount_type     = LDD_MT_LDISKFS;
1322         param->ddp_maxbytes       = sb->s_maxbytes;
1323         /* Overhead estimate should be fairly accurate, so we really take a tiny
1324          * error margin which also avoids fragmenting the filesystem too much */
1325         param->ddp_grant_reserved = 2; /* end up to be 1.9% after conversion */
1326         /* inode are statically allocated, so per-inode space consumption
1327          * is the space consumed by the directory entry */
1328         param->ddp_inodespace     = PER_OBJ_USAGE;
1329         /* per-fragment overhead to be used by the client code */
1330         param->ddp_grant_frag     = 6 * LDISKFS_BLOCK_SIZE(sb);
1331         param->ddp_mntopts      = 0;
1332         if (test_opt(sb, XATTR_USER))
1333                 param->ddp_mntopts |= MNTOPT_USERXATTR;
1334         if (test_opt(sb, POSIX_ACL))
1335                 param->ddp_mntopts |= MNTOPT_ACL;
1336
1337         /* LOD might calculate the max stripe count based on max_ea_size,
1338          * so we need take account in the overhead as well,
1339          * xattr_header + magic + xattr_entry_head */
1340         ea_overhead = sizeof(struct ldiskfs_xattr_header) + sizeof(__u32) +
1341                       LDISKFS_XATTR_LEN(XATTR_NAME_MAX_LEN);
1342
1343 #if defined(LDISKFS_FEATURE_INCOMPAT_EA_INODE)
1344         if (LDISKFS_HAS_INCOMPAT_FEATURE(sb, LDISKFS_FEATURE_INCOMPAT_EA_INODE))
1345                 param->ddp_max_ea_size = LDISKFS_XATTR_MAX_LARGE_EA_SIZE -
1346                                                                 ea_overhead;
1347         else
1348 #endif
1349                 param->ddp_max_ea_size = sb->s_blocksize - ea_overhead;
1350 }
1351
1352 /*
1353  * Concurrency: shouldn't matter.
1354  */
1355 static int osd_sync(const struct lu_env *env, struct dt_device *d)
1356 {
1357         CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_LDISKFS_NAME);
1358         return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
1359 }
1360
1361 /**
1362  * Start commit for OSD device.
1363  *
1364  * An implementation of dt_commit_async method for OSD device.
1365  * Asychronously starts underlayng fs sync and thereby a transaction
1366  * commit.
1367  *
1368  * \param env environment
1369  * \param d dt device
1370  *
1371  * \see dt_device_operations
1372  */
1373 static int osd_commit_async(const struct lu_env *env,
1374                             struct dt_device *d)
1375 {
1376         struct super_block *s = osd_sb(osd_dt_dev(d));
1377         ENTRY;
1378
1379         CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_LDISKFS_NAME);
1380         RETURN(s->s_op->sync_fs(s, 0));
1381 }
1382
1383 /*
1384  * Concurrency: shouldn't matter.
1385  */
1386
1387 static int osd_ro(const struct lu_env *env, struct dt_device *d)
1388 {
1389         struct super_block *sb = osd_sb(osd_dt_dev(d));
1390         struct block_device *dev = sb->s_bdev;
1391 #ifdef HAVE_DEV_SET_RDONLY
1392         struct block_device *jdev = LDISKFS_SB(sb)->journal_bdev;
1393         int rc = 0;
1394 #else
1395         int rc = -EOPNOTSUPP;
1396 #endif
1397         ENTRY;
1398
1399 #ifdef HAVE_DEV_SET_RDONLY
1400         CERROR("*** setting %s read-only ***\n", osd_dt_dev(d)->od_svname);
1401
1402         if (jdev && (jdev != dev)) {
1403                 CDEBUG(D_IOCTL | D_HA, "set journal dev %lx rdonly\n",
1404                        (long)jdev);
1405                 dev_set_rdonly(jdev);
1406         }
1407         CDEBUG(D_IOCTL | D_HA, "set dev %lx rdonly\n", (long)dev);
1408         dev_set_rdonly(dev);
1409 #else
1410         CERROR("%s: %lx CANNOT BE SET READONLY: rc = %d\n",
1411                osd_dt_dev(d)->od_svname, (long)dev, rc);
1412 #endif
1413         RETURN(rc);
1414 }
1415
1416 /*
1417  * Concurrency: serialization provided by callers.
1418  */
1419 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
1420                               int mode, unsigned long timeout, __u32 alg,
1421                               struct lustre_capa_key *keys)
1422 {
1423         struct osd_device *dev = osd_dt_dev(d);
1424         ENTRY;
1425
1426         dev->od_fl_capa = mode;
1427         dev->od_capa_timeout = timeout;
1428         dev->od_capa_alg = alg;
1429         dev->od_capa_keys = keys;
1430         RETURN(0);
1431 }
1432
1433 /**
1434  * Note: we do not count into QUOTA here.
1435  * If we mount with --data_journal we may need more.
1436  */
1437 const int osd_dto_credits_noquota[DTO_NR] = {
1438         /**
1439          * Insert.
1440          * INDEX_EXTRA_TRANS_BLOCKS(8) +
1441          * SINGLEDATA_TRANS_BLOCKS(8)
1442          * XXX Note: maybe iam need more, since iam have more level than
1443          *           EXT3 htree.
1444          */
1445         [DTO_INDEX_INSERT]  = 16,
1446         /**
1447          * Delete
1448          * just modify a single entry, probably merge few within a block
1449          */
1450         [DTO_INDEX_DELETE]  = 1,
1451         /**
1452          * Used for OI scrub
1453          */
1454         [DTO_INDEX_UPDATE]  = 16,
1455         /**
1456          * 4(inode, inode bits, groups, GDT)
1457          *   notice: OI updates are counted separately with DTO_INDEX_INSERT
1458          */
1459         [DTO_OBJECT_CREATE] = 4,
1460         /**
1461          * 4(inode, inode bits, groups, GDT)
1462          *   notice: OI updates are counted separately with DTO_INDEX_DELETE
1463          */
1464         [DTO_OBJECT_DELETE] = 4,
1465         /**
1466          * Attr set credits (inode)
1467          */
1468         [DTO_ATTR_SET_BASE] = 1,
1469         /**
1470          * Xattr set. The same as xattr of EXT3.
1471          * DATA_TRANS_BLOCKS(14)
1472          * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
1473          * are also counted in. Do not know why?
1474          */
1475         [DTO_XATTR_SET]     = 14,
1476         /**
1477          * credits for inode change during write.
1478          */
1479         [DTO_WRITE_BASE]    = 3,
1480         /**
1481          * credits for single block write.
1482          */
1483         [DTO_WRITE_BLOCK]   = 14,
1484         /**
1485          * Attr set credits for chown.
1486          * This is extra credits for setattr, and it is null without quota
1487          */
1488         [DTO_ATTR_SET_CHOWN] = 0
1489 };
1490
1491 static const struct dt_device_operations osd_dt_ops = {
1492         .dt_root_get       = osd_root_get,
1493         .dt_statfs         = osd_statfs,
1494         .dt_trans_create   = osd_trans_create,
1495         .dt_trans_start    = osd_trans_start,
1496         .dt_trans_stop     = osd_trans_stop,
1497         .dt_trans_cb_add   = osd_trans_cb_add,
1498         .dt_conf_get       = osd_conf_get,
1499         .dt_sync           = osd_sync,
1500         .dt_ro             = osd_ro,
1501         .dt_commit_async   = osd_commit_async,
1502         .dt_init_capa_ctxt = osd_init_capa_ctxt,
1503 };
1504
1505 static void osd_object_read_lock(const struct lu_env *env,
1506                                  struct dt_object *dt, unsigned role)
1507 {
1508         struct osd_object *obj = osd_dt_obj(dt);
1509         struct osd_thread_info *oti = osd_oti_get(env);
1510
1511         LINVRNT(osd_invariant(obj));
1512
1513         LASSERT(obj->oo_owner != env);
1514         down_read_nested(&obj->oo_sem, role);
1515
1516         LASSERT(obj->oo_owner == NULL);
1517         oti->oti_r_locks++;
1518 }
1519
1520 static void osd_object_write_lock(const struct lu_env *env,
1521                                   struct dt_object *dt, unsigned role)
1522 {
1523         struct osd_object *obj = osd_dt_obj(dt);
1524         struct osd_thread_info *oti = osd_oti_get(env);
1525
1526         LINVRNT(osd_invariant(obj));
1527
1528         LASSERT(obj->oo_owner != env);
1529         down_write_nested(&obj->oo_sem, role);
1530
1531         LASSERT(obj->oo_owner == NULL);
1532         obj->oo_owner = env;
1533         oti->oti_w_locks++;
1534 }
1535
1536 static void osd_object_read_unlock(const struct lu_env *env,
1537                                    struct dt_object *dt)
1538 {
1539         struct osd_object *obj = osd_dt_obj(dt);
1540         struct osd_thread_info *oti = osd_oti_get(env);
1541
1542         LINVRNT(osd_invariant(obj));
1543
1544         LASSERT(oti->oti_r_locks > 0);
1545         oti->oti_r_locks--;
1546         up_read(&obj->oo_sem);
1547 }
1548
1549 static void osd_object_write_unlock(const struct lu_env *env,
1550                                     struct dt_object *dt)
1551 {
1552         struct osd_object *obj = osd_dt_obj(dt);
1553         struct osd_thread_info *oti = osd_oti_get(env);
1554
1555         LINVRNT(osd_invariant(obj));
1556
1557         LASSERT(obj->oo_owner == env);
1558         LASSERT(oti->oti_w_locks > 0);
1559         oti->oti_w_locks--;
1560         obj->oo_owner = NULL;
1561         up_write(&obj->oo_sem);
1562 }
1563
1564 static int osd_object_write_locked(const struct lu_env *env,
1565                                    struct dt_object *dt)
1566 {
1567         struct osd_object *obj = osd_dt_obj(dt);
1568
1569         LINVRNT(osd_invariant(obj));
1570
1571         return obj->oo_owner == env;
1572 }
1573
1574 static int capa_is_sane(const struct lu_env *env,
1575                         struct osd_device *dev,
1576                         struct lustre_capa *capa,
1577                         struct lustre_capa_key *keys)
1578 {
1579         struct osd_thread_info *oti = osd_oti_get(env);
1580         struct lustre_capa *tcapa = &oti->oti_capa;
1581         struct obd_capa *oc;
1582         int i, rc = 0;
1583         ENTRY;
1584
1585         oc = capa_lookup(dev->od_capa_hash, capa, 0);
1586         if (oc) {
1587                 if (capa_is_expired(oc)) {
1588                         DEBUG_CAPA(D_ERROR, capa, "expired");
1589                         rc = -ESTALE;
1590                 }
1591                 capa_put(oc);
1592                 RETURN(rc);
1593         }
1594
1595         if (capa_is_expired_sec(capa)) {
1596                 DEBUG_CAPA(D_ERROR, capa, "expired");
1597                 RETURN(-ESTALE);
1598         }
1599
1600         spin_lock(&capa_lock);
1601         for (i = 0; i < 2; i++) {
1602                 if (keys[i].lk_keyid == capa->lc_keyid) {
1603                         oti->oti_capa_key = keys[i];
1604                         break;
1605                 }
1606         }
1607         spin_unlock(&capa_lock);
1608
1609         if (i == 2) {
1610                 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1611                 RETURN(-ESTALE);
1612         }
1613
1614         rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1615         if (rc)
1616                 RETURN(rc);
1617
1618         if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1619                 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1620                 RETURN(-EACCES);
1621         }
1622
1623         oc = capa_add(dev->od_capa_hash, capa);
1624         capa_put(oc);
1625
1626         RETURN(0);
1627 }
1628
1629 int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1630                     struct lustre_capa *capa, __u64 opc)
1631 {
1632         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1633         struct osd_device *osd = osd_dev(dt->do_lu.lo_dev);
1634         struct lu_capainfo *lci;
1635         int rc;
1636
1637         if (!osd->od_fl_capa)
1638                 return 0;
1639
1640         if (capa == BYPASS_CAPA)
1641                 return 0;
1642
1643         lci = lu_capainfo_get(env);
1644         if (unlikely(lci == NULL))
1645                 return 0;
1646
1647         if (lci->lci_auth == LC_ID_NONE)
1648                 return 0;
1649
1650         if (capa == NULL) {
1651                 CERROR("%s: no capability provided for FID "DFID": rc = %d\n",
1652                        osd_name(osd), PFID(fid), -EACCES);
1653                 return -EACCES;
1654         }
1655
1656         if (!lu_fid_eq(fid, &capa->lc_fid)) {
1657                 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1658                            PFID(fid));
1659                 return -EACCES;
1660         }
1661
1662         if (!capa_opc_supported(capa, opc)) {
1663                 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1664                 return -EACCES;
1665         }
1666
1667         rc = capa_is_sane(env, osd, capa, osd->od_capa_keys);
1668         if (rc != 0) {
1669                 DEBUG_CAPA(D_ERROR, capa, "insane: rc = %d", rc);
1670                 return -EACCES;
1671         }
1672
1673         return 0;
1674 }
1675
1676 static struct timespec *osd_inode_time(const struct lu_env *env,
1677                                        struct inode *inode, __u64 seconds)
1678 {
1679         struct osd_thread_info  *oti = osd_oti_get(env);
1680         struct timespec         *t   = &oti->oti_time;
1681
1682         t->tv_sec = seconds;
1683         t->tv_nsec = 0;
1684         *t = timespec_trunc(*t, inode->i_sb->s_time_gran);
1685         return t;
1686 }
1687
1688
1689 static void osd_inode_getattr(const struct lu_env *env,
1690                               struct inode *inode, struct lu_attr *attr)
1691 {
1692         attr->la_valid      |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
1693                                LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
1694                                LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE |
1695                                LA_TYPE;
1696
1697         attr->la_atime      = LTIME_S(inode->i_atime);
1698         attr->la_mtime      = LTIME_S(inode->i_mtime);
1699         attr->la_ctime      = LTIME_S(inode->i_ctime);
1700         attr->la_mode       = inode->i_mode;
1701         attr->la_size       = i_size_read(inode);
1702         attr->la_blocks     = inode->i_blocks;
1703         attr->la_uid        = inode->i_uid;
1704         attr->la_gid        = inode->i_gid;
1705         attr->la_flags      = LDISKFS_I(inode)->i_flags;
1706         attr->la_nlink      = inode->i_nlink;
1707         attr->la_rdev       = inode->i_rdev;
1708         attr->la_blksize    = 1 << inode->i_blkbits;
1709         attr->la_blkbits    = inode->i_blkbits;
1710 }
1711
1712 static int osd_attr_get(const struct lu_env *env,
1713                         struct dt_object *dt,
1714                         struct lu_attr *attr,
1715                         struct lustre_capa *capa)
1716 {
1717         struct osd_object *obj = osd_dt_obj(dt);
1718
1719         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1720         LINVRNT(osd_invariant(obj));
1721
1722         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1723                 return -EACCES;
1724
1725         spin_lock(&obj->oo_guard);
1726         osd_inode_getattr(env, obj->oo_inode, attr);
1727         spin_unlock(&obj->oo_guard);
1728         return 0;
1729 }
1730
1731 static int osd_declare_attr_set(const struct lu_env *env,
1732                                 struct dt_object *dt,
1733                                 const struct lu_attr *attr,
1734                                 struct thandle *handle)
1735 {
1736         struct osd_thandle     *oh;
1737         struct osd_object      *obj;
1738         struct osd_thread_info *info = osd_oti_get(env);
1739         struct lquota_id_info  *qi = &info->oti_qi;
1740         long long               bspace;
1741         int                     rc = 0;
1742         bool                    allocated;
1743         ENTRY;
1744
1745         LASSERT(dt != NULL);
1746         LASSERT(handle != NULL);
1747
1748         obj = osd_dt_obj(dt);
1749         LASSERT(osd_invariant(obj));
1750
1751         oh = container_of0(handle, struct osd_thandle, ot_super);
1752         LASSERT(oh->ot_handle == NULL);
1753
1754         osd_trans_declare_op(env, oh, OSD_OT_ATTR_SET,
1755                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
1756
1757         if (attr == NULL || obj->oo_inode == NULL)
1758                 RETURN(rc);
1759
1760         bspace   = obj->oo_inode->i_blocks;
1761         bspace <<= obj->oo_inode->i_sb->s_blocksize_bits;
1762         bspace   = toqb(bspace);
1763
1764         /* Changing ownership is always preformed by super user, it should not
1765          * fail with EDQUOT.
1766          *
1767          * We still need to call the osd_declare_qid() to calculate the journal
1768          * credits for updating quota accounting files and to trigger quota
1769          * space adjustment once the operation is completed.*/
1770         if ((attr->la_valid & LA_UID) != 0 &&
1771              attr->la_uid != obj->oo_inode->i_uid) {
1772                 qi->lqi_type = USRQUOTA;
1773
1774                 /* inode accounting */
1775                 qi->lqi_is_blk = false;
1776
1777                 /* one more inode for the new owner ... */
1778                 qi->lqi_id.qid_uid = attr->la_uid;
1779                 qi->lqi_space      = 1;
1780                 allocated = (attr->la_uid == 0) ? true : false;
1781                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1782                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1783                         rc = 0;
1784                 if (rc)
1785                         RETURN(rc);
1786
1787                 /* and one less inode for the current uid */
1788                 qi->lqi_id.qid_uid = obj->oo_inode->i_uid;
1789                 qi->lqi_space      = -1;
1790                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1791                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1792                         rc = 0;
1793                 if (rc)
1794                         RETURN(rc);
1795
1796                 /* block accounting */
1797                 qi->lqi_is_blk = true;
1798
1799                 /* more blocks for the new owner ... */
1800                 qi->lqi_id.qid_uid = attr->la_uid;
1801                 qi->lqi_space      = bspace;
1802                 allocated = (attr->la_uid == 0) ? true : false;
1803                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1804                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1805                         rc = 0;
1806                 if (rc)
1807                         RETURN(rc);
1808
1809                 /* and finally less blocks for the current owner */
1810                 qi->lqi_id.qid_uid = obj->oo_inode->i_uid;
1811                 qi->lqi_space      = -bspace;
1812                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1813                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1814                         rc = 0;
1815                 if (rc)
1816                         RETURN(rc);
1817         }
1818
1819         if (attr->la_valid & LA_GID &&
1820             attr->la_gid != obj->oo_inode->i_gid) {
1821                 qi->lqi_type = GRPQUOTA;
1822
1823                 /* inode accounting */
1824                 qi->lqi_is_blk = false;
1825
1826                 /* one more inode for the new group owner ... */
1827                 qi->lqi_id.qid_gid = attr->la_gid;
1828                 qi->lqi_space      = 1;
1829                 allocated = (attr->la_gid == 0) ? true : false;
1830                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1831                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1832                         rc = 0;
1833                 if (rc)
1834                         RETURN(rc);
1835
1836                 /* and one less inode for the current gid */
1837                 qi->lqi_id.qid_gid = obj->oo_inode->i_gid;
1838                 qi->lqi_space      = -1;
1839                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1840                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1841                         rc = 0;
1842                 if (rc)
1843                         RETURN(rc);
1844
1845                 /* block accounting */
1846                 qi->lqi_is_blk = true;
1847
1848                 /* more blocks for the new owner ... */
1849                 qi->lqi_id.qid_gid = attr->la_gid;
1850                 qi->lqi_space      = bspace;
1851                 allocated = (attr->la_gid == 0) ? true : false;
1852                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1853                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1854                         rc = 0;
1855                 if (rc)
1856                         RETURN(rc);
1857
1858                 /* and finally less blocks for the current owner */
1859                 qi->lqi_id.qid_gid = obj->oo_inode->i_gid;
1860                 qi->lqi_space      = -bspace;
1861                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1862                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1863                         rc = 0;
1864                 if (rc)
1865                         RETURN(rc);
1866         }
1867
1868         RETURN(rc);
1869 }
1870
1871 static int osd_inode_setattr(const struct lu_env *env,
1872                              struct inode *inode, const struct lu_attr *attr)
1873 {
1874         __u64 bits;
1875
1876         bits = attr->la_valid;
1877
1878         if (bits & LA_ATIME)
1879                 inode->i_atime  = *osd_inode_time(env, inode, attr->la_atime);
1880         if (bits & LA_CTIME)
1881                 inode->i_ctime  = *osd_inode_time(env, inode, attr->la_ctime);
1882         if (bits & LA_MTIME)
1883                 inode->i_mtime  = *osd_inode_time(env, inode, attr->la_mtime);
1884         if (bits & LA_SIZE) {
1885                 LDISKFS_I(inode)->i_disksize = attr->la_size;
1886                 i_size_write(inode, attr->la_size);
1887         }
1888
1889 #if 0
1890         /* OSD should not change "i_blocks" which is used by quota.
1891          * "i_blocks" should be changed by ldiskfs only. */
1892         if (bits & LA_BLOCKS)
1893                 inode->i_blocks = attr->la_blocks;
1894 #endif
1895         if (bits & LA_MODE)
1896                 inode->i_mode   = (inode->i_mode & S_IFMT) |
1897                         (attr->la_mode & ~S_IFMT);
1898         if (bits & LA_UID)
1899                 inode->i_uid    = attr->la_uid;
1900         if (bits & LA_GID)
1901                 inode->i_gid    = attr->la_gid;
1902         if (bits & LA_NLINK)
1903                 set_nlink(inode, attr->la_nlink);
1904         if (bits & LA_RDEV)
1905                 inode->i_rdev   = attr->la_rdev;
1906
1907         if (bits & LA_FLAGS) {
1908                 /* always keep S_NOCMTIME */
1909                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
1910                                  S_NOCMTIME;
1911         }
1912         return 0;
1913 }
1914
1915 static int osd_quota_transfer(struct inode *inode, const struct lu_attr *attr)
1916 {
1917         if ((attr->la_valid & LA_UID && attr->la_uid != inode->i_uid) ||
1918             (attr->la_valid & LA_GID && attr->la_gid != inode->i_gid)) {
1919                 struct iattr    iattr;
1920                 int             rc;
1921
1922                 iattr.ia_valid = 0;
1923                 if (attr->la_valid & LA_UID)
1924                         iattr.ia_valid |= ATTR_UID;
1925                 if (attr->la_valid & LA_GID)
1926                         iattr.ia_valid |= ATTR_GID;
1927                 iattr.ia_uid = attr->la_uid;
1928                 iattr.ia_gid = attr->la_gid;
1929
1930                 rc = ll_vfs_dq_transfer(inode, &iattr);
1931                 if (rc) {
1932                         CERROR("%s: quota transfer failed: rc = %d. Is quota "
1933                                "enforcement enabled on the ldiskfs filesystem?",
1934                                inode->i_sb->s_id, rc);
1935                         return rc;
1936                 }
1937         }
1938         return 0;
1939 }
1940
1941 static int osd_attr_set(const struct lu_env *env,
1942                         struct dt_object *dt,
1943                         const struct lu_attr *attr,
1944                         struct thandle *handle,
1945                         struct lustre_capa *capa)
1946 {
1947         struct osd_object *obj = osd_dt_obj(dt);
1948         struct inode      *inode;
1949         int rc;
1950
1951         LASSERT(handle != NULL);
1952         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1953         LASSERT(osd_invariant(obj));
1954
1955         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1956                 return -EACCES;
1957
1958         osd_trans_exec_op(env, handle, OSD_OT_ATTR_SET);
1959
1960         if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FID_MAPPING)) {
1961                 struct osd_thread_info  *oti  = osd_oti_get(env);
1962                 const struct lu_fid     *fid0 = lu_object_fid(&dt->do_lu);
1963                 struct lu_fid           *fid1 = &oti->oti_fid;
1964                 struct osd_inode_id     *id   = &oti->oti_id;
1965                 struct iam_path_descr   *ipd;
1966                 struct iam_container    *bag;
1967                 struct osd_thandle      *oh;
1968                 int                      rc;
1969
1970                 fid_cpu_to_be(fid1, fid0);
1971                 memset(id, 1, sizeof(*id));
1972                 bag = &osd_fid2oi(osd_dev(dt->do_lu.lo_dev),
1973                                   fid0)->oi_dir.od_container;
1974                 ipd = osd_idx_ipd_get(env, bag);
1975                 if (unlikely(ipd == NULL))
1976                         RETURN(-ENOMEM);
1977
1978                 oh = container_of0(handle, struct osd_thandle, ot_super);
1979                 rc = iam_update(oh->ot_handle, bag, (const struct iam_key *)fid1,
1980                                 (const struct iam_rec *)id, ipd);
1981                 osd_ipd_put(env, bag, ipd);
1982                 return(rc > 0 ? 0 : rc);
1983         }
1984
1985         inode = obj->oo_inode;
1986         ll_vfs_dq_init(inode);
1987
1988         rc = osd_quota_transfer(inode, attr);
1989         if (rc)
1990                 return rc;
1991
1992         spin_lock(&obj->oo_guard);
1993         rc = osd_inode_setattr(env, inode, attr);
1994         spin_unlock(&obj->oo_guard);
1995
1996         if (!rc)
1997                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
1998         return rc;
1999 }
2000
2001 struct dentry *osd_child_dentry_get(const struct lu_env *env,
2002                                     struct osd_object *obj,
2003                                     const char *name, const int namelen)
2004 {
2005         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
2006 }
2007
2008 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
2009                       umode_t mode, struct dt_allocation_hint *hint,
2010                       struct thandle *th)
2011 {
2012         int result;
2013         struct osd_device  *osd = osd_obj2dev(obj);
2014         struct osd_thandle *oth;
2015         struct dt_object   *parent = NULL;
2016         struct inode       *inode;
2017
2018         LINVRNT(osd_invariant(obj));
2019         LASSERT(obj->oo_inode == NULL);
2020         LASSERT(obj->oo_hl_head == NULL);
2021
2022         if (S_ISDIR(mode) && ldiskfs_pdo) {
2023                 obj->oo_hl_head =ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
2024                 if (obj->oo_hl_head == NULL)
2025                         return -ENOMEM;
2026         }
2027
2028         oth = container_of(th, struct osd_thandle, ot_super);
2029         LASSERT(oth->ot_handle->h_transaction != NULL);
2030
2031         if (hint && hint->dah_parent)
2032                 parent = hint->dah_parent;
2033
2034         inode = ldiskfs_create_inode(oth->ot_handle,
2035                                      parent ? osd_dt_obj(parent)->oo_inode :
2036                                               osd_sb(osd)->s_root->d_inode,
2037                                      mode);
2038         if (!IS_ERR(inode)) {
2039                 /* Do not update file c/mtime in ldiskfs.
2040                  * NB: don't need any lock because no contention at this
2041                  * early stage */
2042                 inode->i_flags |= S_NOCMTIME;
2043
2044                 /* For new created object, it must be consistent,
2045                  * and it is unnecessary to scrub against it. */
2046                 ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
2047                 obj->oo_inode = inode;
2048                 result = 0;
2049         } else {
2050                 if (obj->oo_hl_head != NULL) {
2051                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
2052                         obj->oo_hl_head = NULL;
2053                 }
2054                 result = PTR_ERR(inode);
2055         }
2056         LINVRNT(osd_invariant(obj));
2057         return result;
2058 }
2059
2060 enum {
2061         OSD_NAME_LEN = 255
2062 };
2063
2064 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
2065                      struct lu_attr *attr,
2066                      struct dt_allocation_hint *hint,
2067                      struct dt_object_format *dof,
2068                      struct thandle *th)
2069 {
2070         int result;
2071         struct osd_thandle *oth;
2072         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
2073
2074         LASSERT(S_ISDIR(attr->la_mode));
2075
2076         oth = container_of(th, struct osd_thandle, ot_super);
2077         LASSERT(oth->ot_handle->h_transaction != NULL);
2078         result = osd_mkfile(info, obj, mode, hint, th);
2079
2080         return result;
2081 }
2082
2083 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
2084                         struct lu_attr *attr,
2085                         struct dt_allocation_hint *hint,
2086                         struct dt_object_format *dof,
2087                         struct thandle *th)
2088 {
2089         int result;
2090         struct osd_thandle *oth;
2091         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
2092
2093         __u32 mode = (attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX));
2094
2095         LASSERT(S_ISREG(attr->la_mode));
2096
2097         oth = container_of(th, struct osd_thandle, ot_super);
2098         LASSERT(oth->ot_handle->h_transaction != NULL);
2099
2100         result = osd_mkfile(info, obj, mode, hint, th);
2101         if (result == 0) {
2102                 LASSERT(obj->oo_inode != NULL);
2103                 if (feat->dif_flags & DT_IND_VARKEY)
2104                         result = iam_lvar_create(obj->oo_inode,
2105                                                  feat->dif_keysize_max,
2106                                                  feat->dif_ptrsize,
2107                                                  feat->dif_recsize_max,
2108                                                  oth->ot_handle);
2109                 else
2110                         result = iam_lfix_create(obj->oo_inode,
2111                                                  feat->dif_keysize_max,
2112                                                  feat->dif_ptrsize,
2113                                                  feat->dif_recsize_max,
2114                                                  oth->ot_handle);
2115
2116         }
2117         return result;
2118 }
2119
2120 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
2121                      struct lu_attr *attr,
2122                      struct dt_allocation_hint *hint,
2123                      struct dt_object_format *dof,
2124                      struct thandle *th)
2125 {
2126         LASSERT(S_ISREG(attr->la_mode));
2127         return osd_mkfile(info, obj, (attr->la_mode &
2128                                (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
2129 }
2130
2131 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
2132                      struct lu_attr *attr,
2133                      struct dt_allocation_hint *hint,
2134                      struct dt_object_format *dof,
2135                      struct thandle *th)
2136 {
2137         LASSERT(S_ISLNK(attr->la_mode));
2138         return osd_mkfile(info, obj, (attr->la_mode &
2139                               (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
2140 }
2141
2142 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
2143                      struct lu_attr *attr,
2144                      struct dt_allocation_hint *hint,
2145                      struct dt_object_format *dof,
2146                      struct thandle *th)
2147 {
2148         umode_t mode = attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX);
2149         int result;
2150
2151         LINVRNT(osd_invariant(obj));
2152         LASSERT(obj->oo_inode == NULL);
2153         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
2154                 S_ISFIFO(mode) || S_ISSOCK(mode));
2155
2156         result = osd_mkfile(info, obj, mode, hint, th);
2157         if (result == 0) {
2158                 LASSERT(obj->oo_inode != NULL);
2159                 /*
2160                  * This inode should be marked dirty for i_rdev.  Currently
2161                  * that is done in the osd_attr_init().
2162                  */
2163                 init_special_inode(obj->oo_inode, obj->oo_inode->i_mode,
2164                                    attr->la_rdev);
2165         }
2166         LINVRNT(osd_invariant(obj));
2167         return result;
2168 }
2169
2170 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
2171                               struct lu_attr *,
2172                               struct dt_allocation_hint *hint,
2173                               struct dt_object_format *dof,
2174                               struct thandle *);
2175
2176 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
2177 {
2178         osd_obj_type_f result;
2179
2180         switch (type) {
2181         case DFT_DIR:
2182                 result = osd_mkdir;
2183                 break;
2184         case DFT_REGULAR:
2185                 result = osd_mkreg;
2186                 break;
2187         case DFT_SYM:
2188                 result = osd_mksym;
2189                 break;
2190         case DFT_NODE:
2191                 result = osd_mknod;
2192                 break;
2193         case DFT_INDEX:
2194                 result = osd_mk_index;
2195                 break;
2196
2197         default:
2198                 LBUG();
2199                 break;
2200         }
2201         return result;
2202 }
2203
2204
2205 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
2206                         struct dt_object *parent, struct dt_object *child,
2207                         umode_t child_mode)
2208 {
2209         LASSERT(ah);
2210
2211         ah->dah_parent = parent;
2212         ah->dah_mode = child_mode;
2213 }
2214
2215 static void osd_attr_init(struct osd_thread_info *info, struct osd_object *obj,
2216                           struct lu_attr *attr, struct dt_object_format *dof)
2217 {
2218         struct inode   *inode = obj->oo_inode;
2219         __u64           valid = attr->la_valid;
2220         int             result;
2221
2222         attr->la_valid &= ~(LA_TYPE | LA_MODE);
2223
2224         if (dof->dof_type != DFT_NODE)
2225                 attr->la_valid &= ~LA_RDEV;
2226         if ((valid & LA_ATIME) && (attr->la_atime == LTIME_S(inode->i_atime)))
2227                 attr->la_valid &= ~LA_ATIME;
2228         if ((valid & LA_CTIME) && (attr->la_ctime == LTIME_S(inode->i_ctime)))
2229                 attr->la_valid &= ~LA_CTIME;
2230         if ((valid & LA_MTIME) && (attr->la_mtime == LTIME_S(inode->i_mtime)))
2231                 attr->la_valid &= ~LA_MTIME;
2232
2233         result = osd_quota_transfer(inode, attr);
2234         if (result)
2235                 return;
2236
2237         if (attr->la_valid != 0) {
2238                 result = osd_inode_setattr(info->oti_env, inode, attr);
2239                 /*
2240                  * The osd_inode_setattr() should always succeed here.  The
2241                  * only error that could be returned is EDQUOT when we are
2242                  * trying to change the UID or GID of the inode. However, this
2243                  * should not happen since quota enforcement is no longer
2244                  * enabled on ldiskfs (lquota takes care of it).
2245                  */
2246                 LASSERTF(result == 0, "%d", result);
2247                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2248         }
2249
2250         attr->la_valid = valid;
2251 }
2252
2253 /**
2254  * Helper function for osd_object_create()
2255  *
2256  * \retval 0, on success
2257  */
2258 static int __osd_object_create(struct osd_thread_info *info,
2259                                struct osd_object *obj, struct lu_attr *attr,
2260                                struct dt_allocation_hint *hint,
2261                                struct dt_object_format *dof,
2262                                struct thandle *th)
2263 {
2264         int     result;
2265         __u32   umask;
2266
2267         /* we drop umask so that permissions we pass are not affected */
2268         umask = current->fs->umask;
2269         current->fs->umask = 0;
2270
2271         result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof,
2272                                                   th);
2273         if (result == 0) {
2274                 osd_attr_init(info, obj, attr, dof);
2275                 osd_object_init0(obj);
2276                 /* bz 24037 */
2277                 if (obj->oo_inode && (obj->oo_inode->i_state & I_NEW))
2278                         unlock_new_inode(obj->oo_inode);
2279         }
2280
2281         /* restore previous umask value */
2282         current->fs->umask = umask;
2283
2284         return result;
2285 }
2286
2287 /**
2288  * Helper function for osd_object_create()
2289  *
2290  * \retval 0, on success
2291  */
2292 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
2293                            const struct lu_fid *fid, struct thandle *th)
2294 {
2295         struct osd_thread_info *info = osd_oti_get(env);
2296         struct osd_inode_id    *id   = &info->oti_id;
2297         struct osd_device      *osd  = osd_obj2dev(obj);
2298         struct osd_thandle     *oh;
2299
2300         LASSERT(obj->oo_inode != NULL);
2301
2302         oh = container_of0(th, struct osd_thandle, ot_super);
2303         LASSERT(oh->ot_handle);
2304
2305         osd_id_gen(id, obj->oo_inode->i_ino, obj->oo_inode->i_generation);
2306         return osd_oi_insert(info, osd, fid, id, oh->ot_handle, OI_CHECK_FLD);
2307 }
2308
2309 int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
2310                    obd_seq seq, struct lu_seq_range *range)
2311 {
2312         struct seq_server_site  *ss = osd_seq_site(osd);
2313
2314         if (fid_seq_is_idif(seq)) {
2315                 fld_range_set_ost(range);
2316                 range->lsr_index = idif_ost_idx(seq);
2317                 return 0;
2318         }
2319
2320         if (!fid_seq_in_fldb(seq)) {
2321                 fld_range_set_mdt(range);
2322                 if (ss != NULL)
2323                         /* FIXME: If ss is NULL, it suppose not get lsr_index
2324                          * at all */
2325                         range->lsr_index = ss->ss_node_id;
2326                 return 0;
2327         }
2328
2329         LASSERT(ss != NULL);
2330         fld_range_set_any(range);
2331         /* OSD will only do local fld lookup */
2332         return fld_local_lookup(env, ss->ss_server_fld, seq, range);
2333 }
2334
2335 /*
2336  * Concurrency: no external locking is necessary.
2337  */
2338 static int osd_declare_object_create(const struct lu_env *env,
2339                                      struct dt_object *dt,
2340                                      struct lu_attr *attr,
2341                                      struct dt_allocation_hint *hint,
2342                                      struct dt_object_format *dof,
2343                                      struct thandle *handle)
2344 {
2345         struct osd_thandle      *oh;
2346         int                      rc;
2347         ENTRY;
2348
2349         LASSERT(handle != NULL);
2350
2351         oh = container_of0(handle, struct osd_thandle, ot_super);
2352         LASSERT(oh->ot_handle == NULL);
2353
2354         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
2355                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
2356         /* Reuse idle OI block may cause additional one OI block
2357          * to be changed. */
2358         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2359                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
2360
2361         /* If this is directory, then we expect . and .. to be inserted as
2362          * well. The one directory block always needs to be created for the
2363          * directory, so we could use DTO_WRITE_BASE here (GDT, block bitmap,
2364          * block), there is no danger of needing a tree for the first block.
2365          */
2366         if (attr && S_ISDIR(attr->la_mode)) {
2367                 osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2368                                      osd_dto_credits_noquota[DTO_WRITE_BASE]);
2369                 osd_trans_declare_op(env, oh, OSD_OT_INSERT, 0);
2370         }
2371
2372         if (!attr)
2373                 RETURN(0);
2374
2375         rc = osd_declare_inode_qid(env, attr->la_uid, attr->la_gid, 1, oh,
2376                                    false, false, NULL, false);
2377         if (rc != 0)
2378                 RETURN(rc);
2379
2380         RETURN(rc);
2381 }
2382
2383 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
2384                              struct lu_attr *attr,
2385                              struct dt_allocation_hint *hint,
2386                              struct dt_object_format *dof,
2387                              struct thandle *th)
2388 {
2389         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2390         struct osd_object      *obj    = osd_dt_obj(dt);
2391         struct osd_thread_info *info   = osd_oti_get(env);
2392         int result;
2393
2394         ENTRY;
2395
2396         LINVRNT(osd_invariant(obj));
2397         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2398         LASSERT(osd_write_locked(env, obj));
2399         LASSERT(th != NULL);
2400
2401         if (unlikely(fid_is_acct(fid)))
2402                 /* Quota files can't be created from the kernel any more,
2403                  * 'tune2fs -O quota' will take care of creating them */
2404                 RETURN(-EPERM);
2405
2406         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2407         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2408
2409         result = __osd_object_create(info, obj, attr, hint, dof, th);
2410         if (result == 0)
2411                 result = __osd_oi_insert(env, obj, fid, th);
2412
2413         LASSERT(ergo(result == 0,
2414                      dt_object_exists(dt) && !dt_object_remote(dt)));
2415
2416         LASSERT(osd_invariant(obj));
2417         RETURN(result);
2418 }
2419
2420 /**
2421  * Called to destroy on-disk representation of the object
2422  *
2423  * Concurrency: must be locked
2424  */
2425 static int osd_declare_object_destroy(const struct lu_env *env,
2426                                       struct dt_object *dt,
2427                                       struct thandle *th)
2428 {
2429         struct osd_object  *obj = osd_dt_obj(dt);
2430         struct inode       *inode = obj->oo_inode;
2431         struct osd_thandle *oh;
2432         int                 rc;
2433         ENTRY;
2434
2435         oh = container_of0(th, struct osd_thandle, ot_super);
2436         LASSERT(oh->ot_handle == NULL);
2437         LASSERT(inode);
2438
2439         osd_trans_declare_op(env, oh, OSD_OT_DESTROY,
2440                              osd_dto_credits_noquota[DTO_OBJECT_DELETE]);
2441         /* Recycle idle OI leaf may cause additional three OI blocks
2442          * to be changed. */
2443         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
2444                              osd_dto_credits_noquota[DTO_INDEX_DELETE] + 3);
2445         /* one less inode */
2446         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, -1, oh,
2447                                    false, true, NULL, false);
2448         if (rc)
2449                 RETURN(rc);
2450         /* data to be truncated */
2451         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0, oh,
2452                                    true, true, NULL, false);
2453         RETURN(rc);
2454 }
2455
2456 static int osd_object_destroy(const struct lu_env *env,
2457                               struct dt_object *dt,
2458                               struct thandle *th)
2459 {
2460         const struct lu_fid    *fid = lu_object_fid(&dt->do_lu);
2461         struct osd_object      *obj = osd_dt_obj(dt);
2462         struct inode           *inode = obj->oo_inode;
2463         struct osd_device      *osd = osd_obj2dev(obj);
2464         struct osd_thandle     *oh;
2465         int                     result;
2466         ENTRY;
2467
2468         oh = container_of0(th, struct osd_thandle, ot_super);
2469         LASSERT(oh->ot_handle);
2470         LASSERT(inode);
2471         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
2472
2473         if (unlikely(fid_is_acct(fid)))
2474                 RETURN(-EPERM);
2475
2476         if (S_ISDIR(inode->i_mode)) {
2477                 LASSERT(osd_inode_unlinked(inode) || inode->i_nlink == 1 ||
2478                         inode->i_nlink == 2);
2479                 /* it will check/delete the inode from remote parent,
2480                  * how to optimize it? unlink performance impaction XXX */
2481                 result = osd_delete_from_remote_parent(env, osd, obj, oh);
2482                 if (result != 0 && result != -ENOENT) {
2483                         CERROR("%s: delete inode "DFID": rc = %d\n",
2484                                osd_name(osd), PFID(fid), result);
2485                 }
2486                 spin_lock(&obj->oo_guard);
2487                 clear_nlink(inode);
2488                 spin_unlock(&obj->oo_guard);
2489                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2490         }
2491
2492         osd_trans_exec_op(env, th, OSD_OT_DESTROY);
2493
2494         result = osd_oi_delete(osd_oti_get(env), osd, fid, oh->ot_handle,
2495                                OI_CHECK_FLD);
2496
2497         /* XXX: add to ext3 orphan list */
2498         /* rc = ext3_orphan_add(handle_t *handle, struct inode *inode) */
2499
2500         /* not needed in the cache anymore */
2501         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
2502
2503         RETURN(0);
2504 }
2505
2506 /**
2507  * Put the fid into lustre_mdt_attrs, and then place the structure
2508  * inode's ea. This fid should not be altered during the life time
2509  * of the inode.
2510  *
2511  * \retval +ve, on success
2512  * \retval -ve, on error
2513  *
2514  * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
2515  */
2516 int osd_ea_fid_set(struct osd_thread_info *info, struct inode *inode,
2517                    const struct lu_fid *fid, __u32 compat, __u32 incompat)
2518 {
2519         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
2520         int                      rc;
2521         ENTRY;
2522
2523         if (OBD_FAIL_CHECK(OBD_FAIL_FID_INLMA))
2524                 RETURN(0);
2525
2526         lustre_lma_init(lma, fid, compat, incompat);
2527         lustre_lma_swab(lma);
2528
2529         rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma, sizeof(*lma),
2530                              XATTR_CREATE);
2531         /* LMA may already exist, but we need to check that all the
2532          * desired compat/incompat flags have been added. */
2533         if (unlikely(rc == -EEXIST)) {
2534                 if (compat == 0 && incompat == 0)
2535                         RETURN(0);
2536
2537                 rc = __osd_xattr_get(inode, &info->oti_obj_dentry,
2538                                      XATTR_NAME_LMA, info->oti_mdt_attrs_old,
2539                                      LMA_OLD_SIZE);
2540                 if (rc <= 0)
2541                         RETURN(-EINVAL);
2542
2543                 lustre_lma_swab(lma);
2544                 if (!(~lma->lma_compat & compat) &&
2545                     !(~lma->lma_incompat & incompat))
2546                         RETURN(0);
2547
2548                 lma->lma_compat |= compat;
2549                 lma->lma_incompat |= incompat;
2550                 lustre_lma_swab(lma);
2551                 rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma,
2552                                      sizeof(*lma), XATTR_REPLACE);
2553         }
2554
2555         RETURN(rc);
2556 }
2557
2558 /**
2559  * ldiskfs supports fid in dirent, it is passed in dentry->d_fsdata.
2560  * lustre 1.8 also uses d_fsdata for passing other info to ldiskfs.
2561  * To have compatilibility with 1.8 ldiskfs driver we need to have
2562  * magic number at start of fid data.
2563  * \ldiskfs_dentry_param is used only to pass fid from osd to ldiskfs.
2564  * its inmemory API.
2565  */
2566 void osd_get_ldiskfs_dirent_param(struct ldiskfs_dentry_param *param,
2567                                   const struct dt_rec *fid)
2568 {
2569         if (!fid_is_namespace_visible((const struct lu_fid *)fid) ||
2570             OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF)) {
2571                 param->edp_magic = 0;
2572                 return;
2573         }
2574
2575         param->edp_magic = LDISKFS_LUFID_MAGIC;
2576         param->edp_len =  sizeof(struct lu_fid) + 1;
2577         fid_cpu_to_be((struct lu_fid *)param->edp_data, (struct lu_fid *)fid);
2578 }
2579
2580 /**
2581  * Try to read the fid from inode ea into dt_rec.
2582  *
2583  * \param fid object fid.
2584  *
2585  * \retval 0 on success
2586  */
2587 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
2588                           __u32 ino, struct lu_fid *fid,
2589                           struct osd_inode_id *id)
2590 {
2591         struct osd_thread_info *info  = osd_oti_get(env);
2592         struct inode           *inode;
2593         ENTRY;
2594
2595         osd_id_gen(id, ino, OSD_OII_NOGEN);
2596         inode = osd_iget_fid(info, osd_obj2dev(obj), id, fid);
2597         if (IS_ERR(inode))
2598                 RETURN(PTR_ERR(inode));
2599
2600         iput(inode);
2601         RETURN(0);
2602 }
2603
2604 static int osd_add_dot_dotdot_internal(struct osd_thread_info *info,
2605                                         struct inode *dir,
2606                                         struct inode  *parent_dir,
2607                                         const struct dt_rec *dot_fid,
2608                                         const struct dt_rec *dot_dot_fid,
2609                                         struct osd_thandle *oth)
2610 {
2611         struct ldiskfs_dentry_param *dot_ldp;
2612         struct ldiskfs_dentry_param *dot_dot_ldp;
2613
2614         dot_dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp2;
2615         osd_get_ldiskfs_dirent_param(dot_dot_ldp, dot_dot_fid);
2616
2617         dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
2618         dot_ldp->edp_magic = 0;
2619         return ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir,
2620                                         dir, dot_ldp, dot_dot_ldp);
2621 }
2622
2623 /**
2624  * Create an local agent inode for remote entry
2625  */
2626 static struct inode *osd_create_local_agent_inode(const struct lu_env *env,
2627                                                   struct osd_device *osd,
2628                                                   struct osd_object *pobj,
2629                                                   const struct lu_fid *fid,
2630                                                   struct thandle *th)
2631 {
2632         struct osd_thread_info  *info = osd_oti_get(env);
2633         struct inode            *local;
2634         struct osd_thandle      *oh;
2635         int                     rc;
2636         ENTRY;
2637
2638         LASSERT(th);
2639         oh = container_of(th, struct osd_thandle, ot_super);
2640         LASSERT(oh->ot_handle->h_transaction != NULL);
2641
2642         /* FIXME: Insert index api needs to know the mode of
2643          * the remote object. Just use S_IFDIR for now */
2644         local = ldiskfs_create_inode(oh->ot_handle, pobj->oo_inode, S_IFDIR);
2645         if (IS_ERR(local)) {
2646                 CERROR("%s: create local error %d\n", osd_name(osd),
2647                        (int)PTR_ERR(local));
2648                 RETURN(local);
2649         }
2650
2651         /* Set special LMA flag for local agent inode */
2652         rc = osd_ea_fid_set(info, local, fid, 0, LMAI_AGENT);
2653         if (rc != 0) {
2654                 CERROR("%s: set LMA for "DFID" remote inode failed: rc = %d\n",
2655                        osd_name(osd), PFID(fid), rc);
2656                 RETURN(ERR_PTR(rc));
2657         }
2658
2659         rc = osd_add_dot_dotdot_internal(info, local, pobj->oo_inode,
2660                 (const struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
2661                 (const struct dt_rec *)fid, oh);
2662         if (rc != 0) {
2663                 CERROR("%s: "DFID" add dot dotdot error: rc = %d\n",
2664                         osd_name(osd), PFID(fid), rc);
2665                 RETURN(ERR_PTR(rc));
2666         }
2667
2668         RETURN(local);
2669 }
2670
2671 /**
2672  * Delete local agent inode for remote entry
2673  */
2674 static int osd_delete_local_agent_inode(const struct lu_env *env,
2675                                         struct osd_device *osd,
2676                                         const struct lu_fid *fid,
2677                                         __u32 ino, struct osd_thandle *oh)
2678 {
2679         struct osd_thread_info  *oti = osd_oti_get(env);
2680         struct osd_inode_id     *id = &oti->oti_id;
2681         struct inode            *inode;
2682         ENTRY;
2683
2684         id->oii_ino = le32_to_cpu(ino);
2685         id->oii_gen = OSD_OII_NOGEN;
2686         inode = osd_iget(oti, osd, id);
2687         if (IS_ERR(inode)) {
2688                 CERROR("%s: iget error "DFID" id %u:%u\n", osd_name(osd),
2689                        PFID(fid), id->oii_ino, id->oii_gen);
2690                 RETURN(PTR_ERR(inode));
2691         }
2692
2693         clear_nlink(inode);
2694         mark_inode_dirty(inode);
2695         CDEBUG(D_INODE, "%s: delete remote inode "DFID" %lu\n",
2696                 osd_name(osd), PFID(fid), inode->i_ino);
2697         iput(inode);
2698         RETURN(0);
2699 }
2700
2701 /**
2702  * OSD layer object create function for interoperability mode (b11826).
2703  * This is mostly similar to osd_object_create(). Only difference being, fid is
2704  * inserted into inode ea here.
2705  *
2706  * \retval   0, on success
2707  * \retval -ve, on error
2708  */
2709 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
2710                                 struct lu_attr *attr,
2711                                 struct dt_allocation_hint *hint,
2712                                 struct dt_object_format *dof,
2713                                 struct thandle *th)
2714 {
2715         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2716         struct osd_object      *obj    = osd_dt_obj(dt);
2717         struct osd_thread_info *info   = osd_oti_get(env);
2718         int                     result;
2719
2720         ENTRY;
2721
2722         LASSERT(osd_invariant(obj));
2723         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2724         LASSERT(osd_write_locked(env, obj));
2725         LASSERT(th != NULL);
2726
2727         if (unlikely(fid_is_acct(fid)))
2728                 /* Quota files can't be created from the kernel any more,
2729                  * 'tune2fs -O quota' will take care of creating them */
2730                 RETURN(-EPERM);
2731
2732         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2733         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2734
2735         result = __osd_object_create(info, obj, attr, hint, dof, th);
2736         if (result == 0)
2737                 result = osd_ea_fid_set(info, obj->oo_inode, fid,
2738                                 fid_is_on_ost(info, osd_obj2dev(obj),
2739                                               fid, OI_CHECK_FLD) ?
2740                                 LMAC_FID_ON_OST : 0, 0);
2741
2742         if (result == 0)
2743                 result = __osd_oi_insert(env, obj, fid, th);
2744
2745         LASSERT(ergo(result == 0,
2746                      dt_object_exists(dt) && !dt_object_remote(dt)));
2747         LINVRNT(osd_invariant(obj));
2748         RETURN(result);
2749 }
2750
2751 static int osd_declare_object_ref_add(const struct lu_env *env,
2752                                       struct dt_object *dt,
2753                                       struct thandle *handle)
2754 {
2755         struct osd_thandle       *oh;
2756
2757         /* it's possible that object doesn't exist yet */
2758         LASSERT(handle != NULL);
2759
2760         oh = container_of0(handle, struct osd_thandle, ot_super);
2761         LASSERT(oh->ot_handle == NULL);
2762
2763         osd_trans_declare_op(env, oh, OSD_OT_REF_ADD,
2764                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2765
2766         return 0;
2767 }
2768
2769 /*
2770  * Concurrency: @dt is write locked.
2771  */
2772 static int osd_object_ref_add(const struct lu_env *env,
2773                               struct dt_object *dt, struct thandle *th)
2774 {
2775         struct osd_object  *obj = osd_dt_obj(dt);
2776         struct inode       *inode = obj->oo_inode;
2777         struct osd_thandle *oh;
2778         int                 rc = 0;
2779
2780         LINVRNT(osd_invariant(obj));
2781         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2782         LASSERT(osd_write_locked(env, obj));
2783         LASSERT(th != NULL);
2784
2785         oh = container_of0(th, struct osd_thandle, ot_super);
2786         LASSERT(oh->ot_handle != NULL);
2787
2788         osd_trans_exec_op(env, th, OSD_OT_REF_ADD);
2789
2790         CDEBUG(D_INODE, DFID" increase nlink %d\n",
2791                PFID(lu_object_fid(&dt->do_lu)), inode->i_nlink);
2792         /*
2793          * The DIR_NLINK feature allows directories to exceed LDISKFS_LINK_MAX
2794          * (65000) subdirectories by storing "1" in i_nlink if the link count
2795          * would otherwise overflow. Directory tranversal tools understand
2796          * that (st_nlink == 1) indicates that the filesystem dose not track
2797          * hard links count on the directory, and will not abort subdirectory
2798          * scanning early once (st_nlink - 2) subdirs have been found.
2799          *
2800          * This also has to properly handle the case of inodes with nlink == 0
2801          * in case they are being linked into the PENDING directory
2802          */
2803         spin_lock(&obj->oo_guard);
2804         ldiskfs_inc_count(oh->ot_handle, inode);
2805         LASSERT(inode->i_nlink <= LDISKFS_LINK_MAX);
2806         spin_unlock(&obj->oo_guard);
2807
2808         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2809         LINVRNT(osd_invariant(obj));
2810
2811         return rc;
2812 }
2813
2814 static int osd_declare_object_ref_del(const struct lu_env *env,
2815                                       struct dt_object *dt,
2816                                       struct thandle *handle)
2817 {
2818         struct osd_thandle *oh;
2819
2820         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2821         LASSERT(handle != NULL);
2822
2823         oh = container_of0(handle, struct osd_thandle, ot_super);
2824         LASSERT(oh->ot_handle == NULL);
2825
2826         osd_trans_declare_op(env, oh, OSD_OT_REF_DEL,
2827                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2828
2829         return 0;
2830 }
2831
2832 /*
2833  * Concurrency: @dt is write locked.
2834  */
2835 static int osd_object_ref_del(const struct lu_env *env, struct dt_object *dt,
2836                               struct thandle *th)
2837 {
2838         struct osd_object       *obj = osd_dt_obj(dt);
2839         struct inode            *inode = obj->oo_inode;
2840         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
2841         struct osd_thandle      *oh;
2842
2843         LINVRNT(osd_invariant(obj));
2844         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2845         LASSERT(osd_write_locked(env, obj));
2846         LASSERT(th != NULL);
2847
2848         oh = container_of0(th, struct osd_thandle, ot_super);
2849         LASSERT(oh->ot_handle != NULL);
2850
2851         osd_trans_exec_op(env, th, OSD_OT_REF_DEL);
2852
2853         spin_lock(&obj->oo_guard);
2854         /* That can be result of upgrade from old Lustre version and
2855          * applied only to local files.  Just skip this ref_del call.
2856          * ext4_unlink() only treats this as a warning, don't LASSERT here.*/
2857         if (inode->i_nlink == 0) {
2858                 CDEBUG_LIMIT(fid_is_norm(lu_object_fid(&dt->do_lu)) ?
2859                              D_ERROR : D_INODE, "%s: nlink == 0 on "DFID
2860                              ", maybe an upgraded file? (LU-3915)\n",
2861                              osd_name(osd), PFID(lu_object_fid(&dt->do_lu)));
2862                 spin_unlock(&obj->oo_guard);
2863                 return 0;
2864         }
2865
2866         CDEBUG(D_INODE, DFID" decrease nlink %d\n",
2867                PFID(lu_object_fid(&dt->do_lu)), inode->i_nlink);
2868
2869         ldiskfs_dec_count(oh->ot_handle, inode);
2870         spin_unlock(&obj->oo_guard);
2871
2872         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2873         LINVRNT(osd_invariant(obj));
2874
2875         return 0;
2876 }
2877
2878 /*
2879  * Get the 64-bit version for an inode.
2880  */
2881 static int osd_object_version_get(const struct lu_env *env,
2882                                   struct dt_object *dt, dt_obj_version_t *ver)
2883 {
2884         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2885
2886         CDEBUG(D_INODE, "Get version "LPX64" for inode %lu\n",
2887                LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2888         *ver = LDISKFS_I(inode)->i_fs_version;
2889         return 0;
2890 }
2891
2892 /*
2893  * Concurrency: @dt is read locked.
2894  */
2895 static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
2896                          struct lu_buf *buf, const char *name,
2897                          struct lustre_capa *capa)
2898 {
2899         struct osd_object      *obj    = osd_dt_obj(dt);
2900         struct inode           *inode  = obj->oo_inode;
2901         struct osd_thread_info *info   = osd_oti_get(env);
2902         struct dentry          *dentry = &info->oti_obj_dentry;
2903
2904         /* version get is not real XATTR but uses xattr API */
2905         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2906                 /* for version we are just using xattr API but change inode
2907                  * field instead */
2908                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2909                 osd_object_version_get(env, dt, buf->lb_buf);
2910                 return sizeof(dt_obj_version_t);
2911         }
2912
2913         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2914         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
2915
2916         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2917                 return -EACCES;
2918
2919         return __osd_xattr_get(inode, dentry, name, buf->lb_buf, buf->lb_len);
2920 }
2921
2922
2923 static int osd_declare_xattr_set(const struct lu_env *env,
2924                                  struct dt_object *dt,
2925                                  const struct lu_buf *buf, const char *name,
2926                                  int fl, struct thandle *handle)
2927 {
2928         struct osd_thandle *oh;
2929         int credits;
2930
2931         LASSERT(handle != NULL);
2932
2933         oh = container_of0(handle, struct osd_thandle, ot_super);
2934         LASSERT(oh->ot_handle == NULL);
2935
2936         /* optimistic optimization: LMA is set first and usually fit inode */
2937         if (strcmp(name, XATTR_NAME_LMA) == 0) {
2938                 if (dt_object_exists(dt))
2939                         credits = 0;
2940                 else
2941                         credits = 1;
2942         } else if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2943                 credits = 1;
2944         } else {
2945                 struct osd_device  *osd = osd_dev(dt->do_lu.lo_dev);
2946                 struct super_block *sb = osd_sb(osd);
2947                 credits = osd_dto_credits_noquota[DTO_XATTR_SET];
2948                 if (buf && buf->lb_len > sb->s_blocksize) {
2949                         credits *= (buf->lb_len + sb->s_blocksize - 1) >>
2950                                         sb->s_blocksize_bits;
2951                 }
2952         }
2953
2954         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET, credits);
2955
2956         return 0;
2957 }
2958
2959 /*
2960  * Set the 64-bit version for object
2961  */
2962 static void osd_object_version_set(const struct lu_env *env,
2963                                    struct dt_object *dt,
2964                                    dt_obj_version_t *new_version)
2965 {
2966         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2967
2968         CDEBUG(D_INODE, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2969                *new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2970
2971         LDISKFS_I(inode)->i_fs_version = *new_version;
2972         /** Version is set after all inode operations are finished,
2973          *  so we should mark it dirty here */
2974         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2975 }
2976
2977 /*
2978  * Concurrency: @dt is write locked.
2979  */
2980 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2981                          const struct lu_buf *buf, const char *name, int fl,
2982                          struct thandle *handle, struct lustre_capa *capa)
2983 {
2984         struct osd_object      *obj      = osd_dt_obj(dt);
2985         struct inode           *inode    = obj->oo_inode;
2986         struct osd_thread_info *info     = osd_oti_get(env);
2987         int                     fs_flags = 0;
2988         ENTRY;
2989
2990         LASSERT(handle != NULL);
2991
2992         /* version set is not real XATTR */
2993         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2994                 /* for version we are just using xattr API but change inode
2995                  * field instead */
2996                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2997                 osd_object_version_set(env, dt, buf->lb_buf);
2998                 return sizeof(dt_obj_version_t);
2999         }
3000
3001         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
3002                 return -EACCES;
3003
3004         CDEBUG(D_INODE, DFID" set xattr '%s' with size %zd\n",
3005                PFID(lu_object_fid(&dt->do_lu)), name, buf->lb_len);
3006
3007         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3008         if (fl & LU_XATTR_REPLACE)
3009                 fs_flags |= XATTR_REPLACE;
3010
3011         if (fl & LU_XATTR_CREATE)
3012                 fs_flags |= XATTR_CREATE;
3013
3014         return __osd_xattr_set(info, inode, name, buf->lb_buf, buf->lb_len,
3015                                fs_flags);
3016 }
3017
3018 /*
3019  * Concurrency: @dt is read locked.
3020  */
3021 static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
3022                           struct lu_buf *buf, struct lustre_capa *capa)
3023 {
3024         struct osd_object      *obj    = osd_dt_obj(dt);
3025         struct inode           *inode  = obj->oo_inode;
3026         struct osd_thread_info *info   = osd_oti_get(env);
3027         struct dentry          *dentry = &info->oti_obj_dentry;
3028
3029         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3030         LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
3031
3032         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
3033                 return -EACCES;
3034
3035         dentry->d_inode = inode;
3036         dentry->d_sb = inode->i_sb;
3037         return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
3038 }
3039
3040 static int osd_declare_xattr_del(const struct lu_env *env,
3041                                  struct dt_object *dt, const char *name,
3042                                  struct thandle *handle)
3043 {
3044         struct osd_thandle *oh;
3045
3046         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3047         LASSERT(handle != NULL);
3048
3049         oh = container_of0(handle, struct osd_thandle, ot_super);
3050         LASSERT(oh->ot_handle == NULL);
3051
3052         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET,
3053                              osd_dto_credits_noquota[DTO_XATTR_SET]);
3054
3055         return 0;
3056 }
3057
3058 /*
3059  * Concurrency: @dt is write locked.
3060  */
3061 static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
3062                          const char *name, struct thandle *handle,
3063                          struct lustre_capa *capa)
3064 {
3065         struct osd_object      *obj    = osd_dt_obj(dt);
3066         struct inode           *inode  = obj->oo_inode;
3067         struct osd_thread_info *info   = osd_oti_get(env);
3068         struct dentry          *dentry = &info->oti_obj_dentry;
3069         int                     rc;
3070
3071         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3072         LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
3073         LASSERT(handle != NULL);
3074
3075         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
3076                 return -EACCES;
3077
3078         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3079
3080         ll_vfs_dq_init(inode);
3081         dentry->d_inode = inode;
3082         dentry->d_sb = inode->i_sb;
3083         rc = inode->i_op->removexattr(dentry, name);
3084         return rc;
3085 }
3086
3087 static struct obd_capa *osd_capa_get(const struct lu_env *env,
3088                                      struct dt_object *dt,
3089                                      struct lustre_capa *old, __u64 opc)
3090 {
3091         struct osd_thread_info *info = osd_oti_get(env);
3092         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
3093         struct osd_object *obj = osd_dt_obj(dt);
3094         struct osd_device *osd = osd_obj2dev(obj);
3095         struct lustre_capa_key *key = &info->oti_capa_key;
3096         struct lustre_capa *capa = &info->oti_capa;
3097         struct obd_capa *oc;
3098         struct lu_capainfo *lci;
3099         int rc;
3100         ENTRY;
3101
3102         if (!osd->od_fl_capa)
3103                 RETURN(ERR_PTR(-ENOENT));
3104
3105         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3106         LINVRNT(osd_invariant(obj));
3107
3108         /* renewal sanity check */
3109         if (old && osd_object_auth(env, dt, old, opc))
3110                 RETURN(ERR_PTR(-EACCES));
3111
3112         lci = lu_capainfo_get(env);
3113         if (unlikely(lci == NULL))
3114                 RETURN(ERR_PTR(-ENOENT));
3115
3116         switch (lci->lci_auth) {
3117         case LC_ID_NONE:
3118                 RETURN(NULL);
3119         case LC_ID_PLAIN:
3120                 capa->lc_uid = obj->oo_inode->i_uid;
3121                 capa->lc_gid = obj->oo_inode->i_gid;
3122                 capa->lc_flags = LC_ID_PLAIN;
3123                 break;
3124         case LC_ID_CONVERT: {
3125                 __u32 d[4], s[4];
3126
3127                 s[0] = obj->oo_inode->i_uid;
3128                 cfs_get_random_bytes(&(s[1]), sizeof(__u32));
3129                 s[2] = obj->oo_inode->i_gid;
3130                 cfs_get_random_bytes(&(s[3]), sizeof(__u32));
3131                 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
3132                 if (unlikely(rc))
3133                         RETURN(ERR_PTR(rc));
3134
3135                 capa->lc_uid   = ((__u64)d[1] << 32) | d[0];
3136                 capa->lc_gid   = ((__u64)d[3] << 32) | d[2];
3137                 capa->lc_flags = LC_ID_CONVERT;
3138                 break;
3139         }
3140         default:
3141                 RETURN(ERR_PTR(-EINVAL));
3142         }
3143
3144         capa->lc_fid = *fid;
3145         capa->lc_opc = opc;
3146         capa->lc_flags |= osd->od_capa_alg << 24;
3147         capa->lc_timeout = osd->od_capa_timeout;
3148         capa->lc_expiry = 0;
3149
3150         oc = capa_lookup(osd->od_capa_hash, capa, 1);
3151         if (oc) {
3152                 LASSERT(!capa_is_expired(oc));
3153                 RETURN(oc);
3154         }
3155
3156         spin_lock(&capa_lock);
3157         *key = osd->od_capa_keys[1];
3158         spin_unlock(&capa_lock);
3159
3160         capa->lc_keyid = key->lk_keyid;
3161         capa->lc_expiry = cfs_time_current_sec() + osd->od_capa_timeout;
3162
3163         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
3164         if (rc) {
3165                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
3166                 RETURN(ERR_PTR(rc));
3167         }
3168
3169         oc = capa_add(osd->od_capa_hash, capa);
3170         RETURN(oc);
3171 }
3172
3173 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
3174                            __u64 start, __u64 end)
3175 {
3176         struct osd_object       *obj    = osd_dt_obj(dt);
3177         struct inode            *inode  = obj->oo_inode;
3178         struct osd_thread_info  *info   = osd_oti_get(env);
3179         struct dentry           *dentry = &info->oti_obj_dentry;
3180         struct file             *file   = &info->oti_file;
3181         int                     rc;
3182
3183         ENTRY;
3184
3185         dentry->d_inode = inode;
3186         dentry->d_sb = inode->i_sb;
3187         file->f_dentry = dentry;
3188         file->f_mapping = inode->i_mapping;
3189         file->f_op = inode->i_fop;
3190         set_file_inode(file, inode);
3191
3192 #ifdef HAVE_FILE_FSYNC_4ARGS
3193         rc = file->f_op->fsync(file, start, end, 0);
3194 #elif defined(HAVE_FILE_FSYNC_2ARGS)
3195         mutex_lock(&inode->i_mutex);
3196         rc = file->f_op->fsync(file, 0);
3197         mutex_unlock(&inode->i_mutex);
3198 #else
3199         mutex_lock(&inode->i_mutex);
3200         rc = file->f_op->fsync(file, dentry, 0);
3201         mutex_unlock(&inode->i_mutex);
3202 #endif
3203
3204         RETURN(rc);
3205 }
3206
3207 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
3208                         void **data)
3209 {
3210         struct osd_object *obj = osd_dt_obj(dt);
3211         ENTRY;
3212
3213         *data = (void *)obj->oo_inode;
3214         RETURN(0);
3215 }
3216
3217 /*
3218  * Index operations.
3219  */
3220
3221 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
3222                            const struct dt_index_features *feat)
3223 {
3224         struct iam_descr *descr;
3225
3226         if (osd_object_is_root(o))
3227                 return feat == &dt_directory_features;
3228
3229         LASSERT(o->oo_dir != NULL);
3230
3231         descr = o->oo_dir->od_container.ic_descr;
3232         if (feat == &dt_directory_features) {
3233                 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
3234                         return 1;
3235                 else
3236                         return 0;
3237         } else {
3238                 return
3239                         feat->dif_keysize_min <= descr->id_key_size &&
3240                         descr->id_key_size <= feat->dif_keysize_max &&
3241                         feat->dif_recsize_min <= descr->id_rec_size &&
3242                         descr->id_rec_size <= feat->dif_recsize_max &&
3243                         !(feat->dif_flags & (DT_IND_VARKEY |
3244                                              DT_IND_VARREC | DT_IND_NONUNQ)) &&
3245                         ergo(feat->dif_flags & DT_IND_UPDATE,
3246                              1 /* XXX check that object (and file system) is
3247                                 * writable */);
3248         }
3249 }
3250
3251 static int osd_iam_container_init(const struct lu_env *env,
3252                                   struct osd_object *obj,
3253                                   struct osd_directory *dir)
3254 {
3255         struct iam_container *bag = &dir->od_container;
3256         int result;
3257
3258         result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
3259         if (result != 0)
3260                 return result;
3261
3262         result = iam_container_setup(bag);
3263         if (result == 0)
3264                 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
3265         else
3266                 iam_container_fini(bag);
3267
3268         return result;
3269 }
3270
3271
3272 /*
3273  * Concurrency: no external locking is necessary.
3274  */
3275 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
3276                          const struct dt_index_features *feat)
3277 {
3278         int                      result;
3279         int                      skip_iam = 0;
3280         struct osd_object       *obj = osd_dt_obj(dt);
3281
3282         LINVRNT(osd_invariant(obj));
3283
3284         if (osd_object_is_root(obj)) {
3285                 dt->do_index_ops = &osd_index_ea_ops;
3286                 result = 0;
3287         } else if (feat == &dt_directory_features) {
3288                 dt->do_index_ops = &osd_index_ea_ops;
3289                 if (obj->oo_inode != NULL && S_ISDIR(obj->oo_inode->i_mode))
3290                         result = 0;
3291                 else
3292                         result = -ENOTDIR;
3293                 skip_iam = 1;
3294         } else if (unlikely(feat == &dt_otable_features)) {
3295                 dt->do_index_ops = &osd_otable_ops;
3296                 return 0;
3297         } else if (unlikely(feat == &dt_acct_features)) {
3298                 dt->do_index_ops = &osd_acct_index_ops;
3299                 result = 0;
3300                 skip_iam = 1;
3301         } else if (!osd_has_index(obj)) {
3302                 struct osd_directory *dir;
3303
3304                 OBD_ALLOC_PTR(dir);
3305                 if (dir != NULL) {
3306
3307                         spin_lock(&obj->oo_guard);
3308                         if (obj->oo_dir == NULL)
3309                                 obj->oo_dir = dir;
3310                         else
3311                                 /*
3312                                  * Concurrent thread allocated container data.
3313                                  */
3314                                 OBD_FREE_PTR(dir);
3315                         spin_unlock(&obj->oo_guard);
3316                         /*
3317                          * Now, that we have container data, serialize its
3318                          * initialization.
3319                          */
3320                         down_write(&obj->oo_ext_idx_sem);
3321                         /*
3322                          * recheck under lock.
3323                          */
3324                         if (!osd_has_index(obj))
3325                                 result = osd_iam_container_init(env, obj, dir);
3326                         else
3327                                 result = 0;
3328                         up_write(&obj->oo_ext_idx_sem);
3329                 } else {
3330                         result = -ENOMEM;
3331                 }
3332         } else {
3333                 result = 0;
3334         }
3335
3336         if (result == 0 && skip_iam == 0) {
3337                 if (!osd_iam_index_probe(env, obj, feat))
3338                         result = -ENOTDIR;
3339         }
3340         LINVRNT(osd_invariant(obj));
3341
3342         if (result == 0 && is_quota_glb_feat(feat) &&
3343             fid_seq(lu_object_fid(&dt->do_lu)) == FID_SEQ_QUOTA_GLB)
3344                 result = osd_quota_migration(env, dt, feat);
3345
3346         return result;
3347 }
3348
3349 static int osd_otable_it_attr_get(const struct lu_env *env,
3350                                  struct dt_object *dt,
3351                                  struct lu_attr *attr,
3352                                  struct lustre_capa *capa)
3353 {
3354         attr->la_valid = 0;
3355         return 0;
3356 }
3357
3358 static const struct dt_object_operations osd_obj_ops = {
3359         .do_read_lock         = osd_object_read_lock,
3360         .do_write_lock        = osd_object_write_lock,
3361         .do_read_unlock       = osd_object_read_unlock,
3362         .do_write_unlock      = osd_object_write_unlock,
3363         .do_write_locked      = osd_object_write_locked,
3364         .do_attr_get          = osd_attr_get,
3365         .do_declare_attr_set  = osd_declare_attr_set,
3366         .do_attr_set          = osd_attr_set,
3367         .do_ah_init           = osd_ah_init,
3368         .do_declare_create    = osd_declare_object_create,
3369         .do_create            = osd_object_create,
3370         .do_declare_destroy   = osd_declare_object_destroy,
3371         .do_destroy           = osd_object_destroy,
3372         .do_index_try         = osd_index_try,
3373         .do_declare_ref_add   = osd_declare_object_ref_add,
3374         .do_ref_add           = osd_object_ref_add,
3375         .do_declare_ref_del   = osd_declare_object_ref_del,
3376         .do_ref_del           = osd_object_ref_del,
3377         .do_xattr_get         = osd_xattr_get,
3378         .do_declare_xattr_set = osd_declare_xattr_set,
3379         .do_xattr_set         = osd_xattr_set,
3380         .do_declare_xattr_del = osd_declare_xattr_del,
3381         .do_xattr_del         = osd_xattr_del,
3382         .do_xattr_list        = osd_xattr_list,
3383         .do_capa_get          = osd_capa_get,
3384         .do_object_sync       = osd_object_sync,
3385         .do_data_get          = osd_data_get,
3386 };
3387
3388 /**
3389  * dt_object_operations for interoperability mode
3390  * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
3391  */
3392 static const struct dt_object_operations osd_obj_ea_ops = {
3393         .do_read_lock         = osd_object_read_lock,
3394         .do_write_lock        = osd_object_write_lock,
3395         .do_read_unlock       = osd_object_read_unlock,
3396         .do_write_unlock      = osd_object_write_unlock,
3397         .do_write_locked      = osd_object_write_locked,
3398         .do_attr_get          = osd_attr_get,
3399         .do_declare_attr_set  = osd_declare_attr_set,
3400         .do_attr_set          = osd_attr_set,
3401         .do_ah_init           = osd_ah_init,
3402         .do_declare_create    = osd_declare_object_create,
3403         .do_create            = osd_object_ea_create,
3404         .do_declare_destroy   = osd_declare_object_destroy,
3405         .do_destroy           = osd_object_destroy,
3406         .do_index_try         = osd_index_try,
3407         .do_declare_ref_add   = osd_declare_object_ref_add,
3408         .do_ref_add           = osd_object_ref_add,
3409         .do_declare_ref_del   = osd_declare_object_ref_del,
3410         .do_ref_del           = osd_object_ref_del,
3411         .do_xattr_get         = osd_xattr_get,
3412         .do_declare_xattr_set = osd_declare_xattr_set,
3413         .do_xattr_set         = osd_xattr_set,
3414         .do_declare_xattr_del = osd_declare_xattr_del,
3415         .do_xattr_del         = osd_xattr_del,
3416         .do_xattr_list        = osd_xattr_list,
3417         .do_capa_get          = osd_capa_get,
3418         .do_object_sync       = osd_object_sync,
3419         .do_data_get          = osd_data_get,
3420 };
3421
3422 static const struct dt_object_operations osd_obj_otable_it_ops = {
3423         .do_attr_get    = osd_otable_it_attr_get,
3424         .do_index_try   = osd_index_try,
3425 };
3426
3427 static int osd_index_declare_iam_delete(const struct lu_env *env,
3428                                         struct dt_object *dt,
3429                                         const struct dt_key *key,
3430                                         struct thandle *handle)
3431 {
3432         struct osd_thandle    *oh;
3433
3434         oh = container_of0(handle, struct osd_thandle, ot_super);
3435         LASSERT(oh->ot_handle == NULL);
3436
3437         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3438                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3439
3440         return 0;
3441 }
3442
3443 /**
3444  *      delete a (key, value) pair from index \a dt specified by \a key
3445  *
3446  *      \param  dt      osd index object
3447  *      \param  key     key for index
3448  *      \param  rec     record reference
3449  *      \param  handle  transaction handler
3450  *
3451  *      \retval  0  success
3452  *      \retval -ve   failure
3453  */
3454
3455 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
3456                                 const struct dt_key *key,
3457                                 struct thandle *handle,
3458                                 struct lustre_capa *capa)
3459 {
3460         struct osd_thread_info *oti = osd_oti_get(env);
3461         struct osd_object      *obj = osd_dt_obj(dt);
3462         struct osd_thandle     *oh;
3463         struct iam_path_descr  *ipd;
3464         struct iam_container   *bag = &obj->oo_dir->od_container;
3465         int                     rc;
3466
3467         ENTRY;
3468
3469         LINVRNT(osd_invariant(obj));
3470         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3471         LASSERT(bag->ic_object == obj->oo_inode);
3472         LASSERT(handle != NULL);
3473
3474         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3475                 RETURN(-EACCES);
3476
3477         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3478
3479         ipd = osd_idx_ipd_get(env, bag);
3480         if (unlikely(ipd == NULL))
3481                 RETURN(-ENOMEM);
3482
3483         oh = container_of0(handle, struct osd_thandle, ot_super);
3484         LASSERT(oh->ot_handle != NULL);
3485         LASSERT(oh->ot_handle->h_transaction != NULL);
3486
3487         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3488                 /* swab quota uid/gid provided by caller */
3489                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3490                 key = (const struct dt_key *)&oti->oti_quota_id;
3491         }
3492
3493         rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
3494         osd_ipd_put(env, bag, ipd);
3495         LINVRNT(osd_invariant(obj));
3496         RETURN(rc);
3497 }
3498
3499 static int osd_index_declare_ea_delete(const struct lu_env *env,
3500                                        struct dt_object *dt,
3501                                        const struct dt_key *key,
3502                                        struct thandle *handle)
3503 {
3504         struct osd_thandle *oh;
3505         struct inode       *inode;
3506         int                 rc;
3507         ENTRY;
3508
3509         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3510         LASSERT(handle != NULL);
3511
3512         oh = container_of0(handle, struct osd_thandle, ot_super);
3513         LASSERT(oh->ot_handle == NULL);
3514
3515         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3516                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3517
3518         inode = osd_dt_obj(dt)->oo_inode;
3519         LASSERT(inode);
3520
3521         rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0, oh,
3522                                    true, true, NULL, false);
3523         RETURN(rc);
3524 }
3525
3526 static inline int osd_get_fid_from_dentry(struct ldiskfs_dir_entry_2 *de,
3527                                           struct dt_rec *fid)
3528 {
3529         struct osd_fid_pack *rec;
3530         int                  rc = -ENODATA;
3531
3532         if (de->file_type & LDISKFS_DIRENT_LUFID) {
3533                 rec = (struct osd_fid_pack *) (de->name + de->name_len + 1);
3534                 rc = osd_fid_unpack((struct lu_fid *)fid, rec);
3535         }
3536         return rc;
3537 }
3538
3539 static int osd_remote_fid(const struct lu_env *env, struct osd_device *osd,
3540                           struct lu_fid *fid)
3541 {
3542         ENTRY;
3543
3544         /* FID seqs not in FLDB, must be local seq */
3545         if (unlikely(!fid_seq_in_fldb(fid_seq(fid))))
3546                 RETURN(0);
3547
3548         if (osd_seq_exists(env, osd, fid_seq(fid)))
3549                 RETURN(0);
3550
3551         RETURN(1);
3552 }
3553
3554 /**
3555  * Index delete function for interoperability mode (b11826).
3556  * It will remove the directory entry added by osd_index_ea_insert().
3557  * This entry is needed to maintain name->fid mapping.
3558  *
3559  * \param key,  key i.e. file entry to be deleted
3560  *
3561  * \retval   0, on success
3562  * \retval -ve, on error
3563  */
3564 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
3565                                const struct dt_key *key,
3566                                struct thandle *handle,
3567                                struct lustre_capa *capa)
3568 {
3569         struct osd_object          *obj    = osd_dt_obj(dt);
3570         struct inode               *dir    = obj->oo_inode;
3571         struct dentry              *dentry;
3572         struct osd_thandle         *oh;
3573         struct ldiskfs_dir_entry_2 *de = NULL;
3574         struct buffer_head         *bh;
3575         struct htree_lock          *hlock = NULL;
3576         struct lu_fid              *fid = &osd_oti_get(env)->oti_fid;
3577         struct osd_device          *osd = osd_dev(dt->do_lu.lo_dev);
3578         int                        rc;
3579         ENTRY;
3580
3581         LINVRNT(osd_invariant(obj));
3582         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3583         LASSERT(handle != NULL);
3584
3585         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3586
3587         oh = container_of(handle, struct osd_thandle, ot_super);
3588         LASSERT(oh->ot_handle != NULL);
3589         LASSERT(oh->ot_handle->h_transaction != NULL);
3590
3591         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3592                 RETURN(-EACCES);
3593
3594         ll_vfs_dq_init(dir);
3595         dentry = osd_child_dentry_get(env, obj,
3596                                       (char *)key, strlen((char *)key));
3597
3598         if (obj->oo_hl_head != NULL) {
3599                 hlock = osd_oti_get(env)->oti_hlock;
3600                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3601                                    dir, LDISKFS_HLOCK_DEL);
3602         } else {
3603                 down_write(&obj->oo_ext_idx_sem);
3604         }
3605
3606         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
3607         if (bh) {
3608                 __u32 ino = 0;
3609
3610                 /* If this is not the ".." entry, it might be a remote DNE
3611                  * entry and  we need to check if the FID is for a remote
3612                  * MDT.  If the FID is  not in the directory entry (e.g.
3613                  * upgraded 1.8 filesystem without dirdata enabled) then
3614                  * we need to get the FID from the LMA. For a remote directory
3615                  * there HAS to be an LMA, it cannot be an IGIF inode in this
3616                  * case.
3617                  *
3618                  * Delete the entry before the agent inode in order to
3619                  * simplify error handling.  At worst an error after deleting
3620                  * the entry first might leak the agent inode afterward. The
3621                  * reverse would need filesystem abort in case of error deleting
3622                  * the entry after the agent had been removed, or leave a
3623                  * dangling entry pointing at a random inode. */
3624                 if (strcmp((char *)key, dotdot) != 0) {
3625                         LASSERT(de != NULL);
3626                         rc = osd_get_fid_from_dentry(de, (struct dt_rec *)fid);
3627                         /* If Fid is not in dentry, try to get it from LMA */
3628                         if (rc == -ENODATA) {
3629                                 struct osd_inode_id *id;
3630                                 struct inode *inode;
3631
3632                                 /* Before trying to get fid from the inode,
3633                                  * check whether the inode is valid.
3634                                  *
3635                                  * If the inode has been deleted, do not go
3636                                  * ahead to do osd_ea_fid_get, which will set
3637                                  * the inode to bad inode, which might cause
3638                                  * the inode to be deleted uncorrectly */
3639                                 inode = ldiskfs_iget(osd_sb(osd),
3640                                                      le32_to_cpu(de->inode));
3641                                 if (IS_ERR(inode)) {
3642                                         CDEBUG(D_INODE, "%s: "DFID"get inode"
3643                                                "error.\n", osd_name(osd),
3644                                                PFID(fid));
3645                                         rc = PTR_ERR(inode);
3646                                 } else {
3647                                         if (likely(inode->i_nlink != 0)) {
3648                                                 id = &osd_oti_get(env)->oti_id;
3649                                                 rc = osd_ea_fid_get(env, obj,
3650                                                         le32_to_cpu(de->inode),
3651                                                                     fid, id);
3652                                         } else {
3653                                                 CDEBUG(D_INFO, "%s: %u "DFID
3654                                                        "deleted.\n",
3655                                                        osd_name(osd),
3656                                                        le32_to_cpu(de->inode),
3657                                                        PFID(fid));
3658                                                 rc = -ESTALE;
3659                                         }
3660                                         iput(inode);
3661                                 }
3662                         }
3663                         if (rc == 0 &&
3664                             unlikely(osd_remote_fid(env, osd, fid)))
3665                                 /* Need to delete agent inode */
3666                                 ino = le32_to_cpu(de->inode);
3667                 }
3668                 rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh);
3669                 brelse(bh);
3670                 if (rc == 0 && unlikely(ino != 0)) {
3671                         rc = osd_delete_local_agent_inode(env, osd, fid, ino,
3672                                                           oh);
3673                         if (rc != 0)
3674                                 CERROR("%s: del local inode "DFID": rc = %d\n",
3675                                        osd_name(osd), PFID(fid), rc);
3676                 }
3677         } else {
3678                 rc = -ENOENT;
3679         }
3680         if (hlock != NULL)
3681                 ldiskfs_htree_unlock(hlock);
3682         else
3683                 up_write(&obj->oo_ext_idx_sem);
3684
3685         if (rc != 0)
3686                 GOTO(out, rc);
3687
3688         /* For inode on the remote MDT, .. will point to
3689          * /Agent directory, Check whether it needs to delete
3690          * from agent directory */
3691         if (unlikely(strcmp((char *)key, dotdot) == 0)) {
3692                 rc = osd_delete_from_remote_parent(env, osd_obj2dev(obj), obj,
3693                                                    oh);
3694                 if (rc != 0 && rc != -ENOENT) {
3695                         CERROR("%s: delete agent inode "DFID": rc = %d\n",
3696                                osd_name(osd), PFID(fid), rc);
3697                 }
3698
3699                 if (rc == -ENOENT)
3700                         rc = 0;
3701
3702                 GOTO(out, rc);
3703         }
3704 out:
3705
3706         LASSERT(osd_invariant(obj));
3707         RETURN(rc);
3708 }
3709
3710 /**
3711  *      Lookup index for \a key and copy record to \a rec.
3712  *
3713  *      \param  dt      osd index object
3714  *      \param  key     key for index
3715  *      \param  rec     record reference
3716  *
3717  *      \retval  +ve  success : exact mach
3718  *      \retval  0    return record with key not greater than \a key
3719  *      \retval -ve   failure
3720  */
3721 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
3722                                 struct dt_rec *rec, const struct dt_key *key,
3723                                 struct lustre_capa *capa)
3724 {
3725         struct osd_object      *obj = osd_dt_obj(dt);
3726         struct iam_path_descr  *ipd;
3727         struct iam_container   *bag = &obj->oo_dir->od_container;
3728         struct osd_thread_info *oti = osd_oti_get(env);
3729         struct iam_iterator    *it = &oti->oti_idx_it;
3730         struct iam_rec         *iam_rec;
3731         int                     rc;
3732
3733         ENTRY;
3734
3735         LASSERT(osd_invariant(obj));
3736         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3737         LASSERT(bag->ic_object == obj->oo_inode);
3738
3739         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3740                 RETURN(-EACCES);
3741
3742         ipd = osd_idx_ipd_get(env, bag);
3743         if (IS_ERR(ipd))
3744                 RETURN(-ENOMEM);
3745
3746         /* got ipd now we can start iterator. */
3747         iam_it_init(it, bag, 0, ipd);
3748
3749         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3750                 /* swab quota uid/gid provided by caller */
3751                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3752                 key = (const struct dt_key *)&oti->oti_quota_id;
3753         }
3754
3755         rc = iam_it_get(it, (struct iam_key *)key);
3756         if (rc >= 0) {
3757                 if (S_ISDIR(obj->oo_inode->i_mode))
3758                         iam_rec = (struct iam_rec *)oti->oti_ldp;
3759                 else
3760                         iam_rec = (struct iam_rec *) rec;
3761
3762                 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
3763
3764                 if (S_ISDIR(obj->oo_inode->i_mode))
3765                         osd_fid_unpack((struct lu_fid *) rec,
3766                                        (struct osd_fid_pack *)iam_rec);
3767                 else if (fid_is_quota(lu_object_fid(&dt->do_lu)))
3768                         osd_quota_unpack(obj, rec);
3769         }
3770
3771         iam_it_put(it);
3772         iam_it_fini(it);
3773         osd_ipd_put(env, bag, ipd);
3774
3775         LINVRNT(osd_invariant(obj));
3776
3777         RETURN(rc);
3778 }
3779
3780 static int osd_index_declare_iam_insert(const struct lu_env *env,
3781                                         struct dt_object *dt,
3782                                         const struct dt_rec *rec,
3783                                         const struct dt_key *key,
3784                                         struct thandle *handle)
3785 {
3786         struct osd_thandle *oh;
3787
3788         LASSERT(handle != NULL);
3789
3790         oh = container_of0(handle, struct osd_thandle, ot_super);
3791         LASSERT(oh->ot_handle == NULL);
3792
3793         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3794                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
3795
3796         return 0;
3797 }
3798
3799 /**
3800  *      Inserts (key, value) pair in \a dt index object.
3801  *
3802  *      \param  dt      osd index object
3803  *      \param  key     key for index
3804  *      \param  rec     record reference
3805  *      \param  th      transaction handler
3806  *
3807  *      \retval  0  success
3808  *      \retval -ve failure
3809  */
3810 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
3811                                 const struct dt_rec *rec,
3812                                 const struct dt_key *key, struct thandle *th,
3813                                 struct lustre_capa *capa, int ignore_quota)
3814 {
3815         struct osd_object     *obj = osd_dt_obj(dt);
3816         struct iam_path_descr *ipd;
3817         struct osd_thandle    *oh;
3818         struct iam_container  *bag = &obj->oo_dir->od_container;
3819         struct osd_thread_info *oti = osd_oti_get(env);
3820         struct iam_rec         *iam_rec;
3821         int                     rc;
3822
3823         ENTRY;
3824
3825         LINVRNT(osd_invariant(obj));
3826         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3827         LASSERT(bag->ic_object == obj->oo_inode);
3828         LASSERT(th != NULL);
3829
3830         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3831                 RETURN(-EACCES);
3832
3833         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3834
3835         ipd = osd_idx_ipd_get(env, bag);
3836         if (unlikely(ipd == NULL))
3837                 RETURN(-ENOMEM);
3838
3839         oh = container_of0(th, struct osd_thandle, ot_super);
3840         LASSERT(oh->ot_handle != NULL);
3841         LASSERT(oh->ot_handle->h_transaction != NULL);
3842         if (S_ISDIR(obj->oo_inode->i_mode)) {
3843                 iam_rec = (struct iam_rec *)oti->oti_ldp;
3844                 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
3845         } else if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3846                 /* pack quota uid/gid */
3847                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3848                 key = (const struct dt_key *)&oti->oti_quota_id;
3849                 /* pack quota record */
3850                 rec = osd_quota_pack(obj, rec, &oti->oti_quota_rec);
3851                 iam_rec = (struct iam_rec *)rec;
3852         } else {
3853                 iam_rec = (struct iam_rec *)rec;
3854         }
3855
3856         rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
3857                         iam_rec, ipd);
3858         osd_ipd_put(env, bag, ipd);
3859         LINVRNT(osd_invariant(obj));
3860         RETURN(rc);
3861 }
3862
3863 /**
3864  * Calls ldiskfs_add_entry() to add directory entry
3865  * into the directory. This is required for
3866  * interoperability mode (b11826)
3867  *
3868  * \retval   0, on success
3869  * \retval -ve, on error
3870  */
3871 static int __osd_ea_add_rec(struct osd_thread_info *info,
3872                             struct osd_object *pobj, struct inode  *cinode,
3873                             const char *name, const struct dt_rec *fid,
3874                             struct htree_lock *hlock, struct thandle *th)
3875 {
3876         struct ldiskfs_dentry_param *ldp;
3877         struct dentry               *child;
3878         struct osd_thandle          *oth;
3879         int                          rc;
3880
3881         oth = container_of(th, struct osd_thandle, ot_super);
3882         LASSERT(oth->ot_handle != NULL);
3883         LASSERT(oth->ot_handle->h_transaction != NULL);
3884         LASSERT(pobj->oo_inode);
3885
3886         ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3887         if (unlikely(pobj->oo_inode ==
3888                      osd_sb(osd_obj2dev(pobj))->s_root->d_inode))
3889                 ldp->edp_magic = 0;
3890         else
3891                 osd_get_ldiskfs_dirent_param(ldp, fid);
3892         child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
3893         child->d_fsdata = (void *)ldp;
3894         ll_vfs_dq_init(pobj->oo_inode);
3895         rc = osd_ldiskfs_add_entry(oth->ot_handle, child, cinode, hlock);
3896
3897         RETURN(rc);
3898 }
3899
3900 /**
3901  * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
3902  * into the directory.Also sets flags into osd object to
3903  * indicate dot and dotdot are created. This is required for
3904  * interoperability mode (b11826)
3905  *
3906  * \param dir   directory for dot and dotdot fixup.
3907  * \param obj   child object for linking
3908  *
3909  * \retval   0, on success
3910  * \retval -ve, on error
3911  */
3912 static int osd_add_dot_dotdot(struct osd_thread_info *info,
3913                               struct osd_object *dir,
3914                               struct inode  *parent_dir, const char *name,
3915                               const struct dt_rec *dot_fid,
3916                               const struct dt_rec *dot_dot_fid,
3917                               struct thandle *th)
3918 {
3919         struct inode                *inode = dir->oo_inode;
3920         struct osd_thandle          *oth;
3921         int result = 0;
3922
3923         oth = container_of(th, struct osd_thandle, ot_super);
3924         LASSERT(oth->ot_handle->h_transaction != NULL);
3925         LASSERT(S_ISDIR(dir->oo_inode->i_mode));
3926
3927         if (strcmp(name, dot) == 0) {
3928                 if (dir->oo_compat_dot_created) {
3929                         result = -EEXIST;
3930                 } else {
3931                         LASSERT(inode == parent_dir);
3932                         dir->oo_compat_dot_created = 1;
3933                         result = 0;
3934                 }
3935         } else if (strcmp(name, dotdot) == 0) {
3936                 if (!dir->oo_compat_dot_created)
3937                         return -EINVAL;
3938                 /* in case of rename, dotdot is already created */
3939                 if (dir->oo_compat_dotdot_created) {
3940                         return __osd_ea_add_rec(info, dir, parent_dir, name,
3941                                                 dot_dot_fid, NULL, th);
3942                 }
3943
3944                 result = osd_add_dot_dotdot_internal(info, dir->oo_inode,
3945                                                 parent_dir, dot_fid,
3946                                                 dot_dot_fid, oth);
3947                 if (result == 0)
3948                         dir->oo_compat_dotdot_created = 1;
3949         }
3950
3951         return result;
3952 }
3953
3954
3955 /**
3956  * It will call the appropriate osd_add* function and return the
3957  * value, return by respective functions.
3958  */
3959 static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj,
3960                           struct inode *cinode, const char *name,
3961                           const struct dt_rec *fid, struct thandle *th)
3962 {
3963         struct osd_thread_info *info   = osd_oti_get(env);
3964         struct htree_lock      *hlock;
3965         int                     rc;
3966
3967         hlock = pobj->oo_hl_head != NULL ? info->oti_hlock : NULL;
3968
3969         if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
3970                                                    name[2] =='\0'))) {
3971                 if (hlock != NULL) {
3972                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3973                                            pobj->oo_inode, 0);
3974                 } else {
3975                         down_write(&pobj->oo_ext_idx_sem);
3976                 }
3977                 rc = osd_add_dot_dotdot(info, pobj, cinode, name,
3978                      (struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
3979                                         fid, th);
3980         } else {
3981                 if (hlock != NULL) {
3982                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3983                                            pobj->oo_inode, LDISKFS_HLOCK_ADD);
3984                 } else {
3985                         down_write(&pobj->oo_ext_idx_sem);
3986                 }
3987
3988                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_INDIR)) {
3989                         struct lu_fid *tfid = &info->oti_fid;
3990
3991                         *tfid = *(const struct lu_fid *)fid;
3992                         tfid->f_ver = ~0;
3993                         rc = __osd_ea_add_rec(info, pobj, cinode, name,
3994                                               (const struct dt_rec *)tfid,
3995                                               hlock, th);
3996                 } else {
3997                         rc = __osd_ea_add_rec(info, pobj, cinode, name, fid,
3998                                               hlock, th);
3999                 }
4000         }
4001         if (hlock != NULL)
4002                 ldiskfs_htree_unlock(hlock);
4003         else
4004                 up_write(&pobj->oo_ext_idx_sem);
4005
4006         return rc;
4007 }
4008
4009 static void
4010 osd_consistency_check(struct osd_thread_info *oti, struct osd_device *dev,
4011                       struct osd_idmap_cache *oic)
4012 {
4013         struct osd_scrub    *scrub = &dev->od_scrub;
4014         struct lu_fid       *fid   = &oic->oic_fid;
4015         struct osd_inode_id *id    = &oti->oti_id;
4016         int                  once  = 0;
4017         int                  rc;
4018         ENTRY;
4019
4020         if (!fid_is_norm(fid) && !fid_is_igif(fid))
4021                 RETURN_EXIT;
4022
4023 again:
4024         rc = osd_oi_lookup(oti, dev, fid, id, OI_CHECK_FLD);
4025         if (rc != 0 && rc != -ENOENT)
4026                 RETURN_EXIT;
4027
4028         if (rc == 0 && osd_id_eq(id, &oic->oic_lid))
4029                 RETURN_EXIT;
4030
4031         if (thread_is_running(&scrub->os_thread)) {
4032                 rc = osd_oii_insert(dev, oic, rc == -ENOENT);
4033                 /* There is race condition between osd_oi_lookup and OI scrub.
4034                  * The OI scrub finished just after osd_oi_lookup() failure.
4035                  * Under such case, it is unnecessary to trigger OI scrub again,
4036                  * but try to call osd_oi_lookup() again. */
4037                 if (unlikely(rc == -EAGAIN))
4038                         goto again;
4039
4040                 RETURN_EXIT;
4041         }
4042
4043         if (!dev->od_noscrub && ++once == 1) {
4044                 rc = osd_scrub_start(dev);
4045                 LCONSOLE_WARN("%.16s: trigger OI scrub by RPC for "DFID
4046                               ", rc = %d [2]\n",
4047                               LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
4048                               PFID(fid), rc);
4049                 if (rc == 0)
4050                         goto again;
4051         }
4052
4053         EXIT;
4054 }
4055
4056 static int osd_fail_fid_lookup(struct osd_thread_info *oti,
4057                                struct osd_device *dev,
4058                                struct osd_idmap_cache *oic,
4059                                struct lu_fid *fid, __u32 ino)
4060 {
4061         struct lustre_mdt_attrs *lma   = &oti->oti_mdt_attrs;
4062         struct inode            *inode;
4063         int                      rc;
4064
4065         osd_id_gen(&oic->oic_lid, ino, OSD_OII_NOGEN);
4066         inode = osd_iget(oti, dev, &oic->oic_lid);
4067         if (IS_ERR(inode)) {
4068                 fid_zero(&oic->oic_fid);
4069                 return PTR_ERR(inode);
4070         }
4071
4072         rc = osd_get_lma(oti, inode, &oti->oti_obj_dentry, lma);
4073         iput(inode);
4074         if (rc != 0)
4075                 fid_zero(&oic->oic_fid);
4076         else
4077                 *fid = oic->oic_fid = lma->lma_self_fid;
4078         return rc;
4079 }
4080
4081 int osd_add_oi_cache(struct osd_thread_info *info, struct osd_device *osd,
4082                      struct osd_inode_id *id, const struct lu_fid *fid)
4083 {
4084         CDEBUG(D_INODE, "add "DFID" %u:%u to info %p\n", PFID(fid),
4085                id->oii_ino, id->oii_gen, info);
4086         info->oti_cache.oic_lid = *id;
4087         info->oti_cache.oic_fid = *fid;
4088         info->oti_cache.oic_dev = osd;
4089
4090         return 0;
4091 }
4092
4093 /**
4094  * Calls ->lookup() to find dentry. From dentry get inode and
4095  * read inode's ea to get fid. This is required for  interoperability
4096  * mode (b11826)
4097  *
4098  * \retval   0, on success
4099  * \retval -ve, on error
4100  */
4101 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
4102                              struct dt_rec *rec, const struct dt_key *key)
4103 {
4104         struct inode               *dir    = obj->oo_inode;
4105         struct dentry              *dentry;
4106         struct ldiskfs_dir_entry_2 *de;
4107         struct buffer_head         *bh;
4108         struct lu_fid              *fid = (struct lu_fid *) rec;
4109         struct htree_lock          *hlock = NULL;
4110         int                         ino;
4111         int                         rc;
4112         ENTRY;
4113
4114         LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
4115
4116         dentry = osd_child_dentry_get(env, obj,
4117                                       (char *)key, strlen((char *)key));
4118
4119         if (obj->oo_hl_head != NULL) {
4120                 hlock = osd_oti_get(env)->oti_hlock;
4121                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4122                                    dir, LDISKFS_HLOCK_LOOKUP);
4123         } else {
4124                 down_read(&obj->oo_ext_idx_sem);
4125         }
4126
4127         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
4128         if (bh) {
4129                 struct osd_thread_info *oti = osd_oti_get(env);
4130                 struct osd_inode_id *id = &oti->oti_id;
4131                 struct osd_idmap_cache *oic = &oti->oti_cache;
4132                 struct osd_device *dev = osd_obj2dev(obj);
4133                 struct osd_scrub *scrub = &dev->od_scrub;
4134                 struct scrub_file *sf = &scrub->os_file;
4135
4136                 ino = le32_to_cpu(de->inode);
4137                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP)) {
4138                         brelse(bh);
4139                         rc = osd_fail_fid_lookup(oti, dev, oic, fid, ino);
4140                         GOTO(out, rc);
4141                 }
4142
4143                 rc = osd_get_fid_from_dentry(de, rec);
4144
4145                 /* done with de, release bh */
4146                 brelse(bh);
4147                 if (rc != 0)
4148                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
4149                 else
4150                         osd_id_gen(id, ino, OSD_OII_NOGEN);
4151                 if (rc != 0) {
4152                         fid_zero(&oic->oic_fid);
4153                         GOTO(out, rc);
4154                 }
4155
4156                 if (osd_remote_fid(env, dev, fid))
4157                         GOTO(out, rc = 0);
4158
4159                 rc = osd_add_oi_cache(osd_oti_get(env), osd_obj2dev(obj), id,
4160                                       fid);
4161                 if (rc != 0)
4162                         GOTO(out, rc);
4163                 if ((scrub->os_pos_current <= ino) &&
4164                     ((sf->sf_flags & SF_INCONSISTENT) ||
4165                      (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
4166                      ldiskfs_test_bit(osd_oi_fid2idx(dev, fid),
4167                                       sf->sf_oi_bitmap)))
4168                         osd_consistency_check(oti, dev, oic);
4169         } else {
4170                 rc = -ENOENT;
4171         }
4172
4173         GOTO(out, rc);
4174
4175 out:
4176         if (hlock != NULL)
4177                 ldiskfs_htree_unlock(hlock);
4178         else
4179                 up_read(&obj->oo_ext_idx_sem);
4180         return rc;
4181 }
4182
4183 /**
4184  * Find the osd object for given fid.
4185  *
4186  * \param fid need to find the osd object having this fid
4187  *
4188  * \retval osd_object on success
4189  * \retval        -ve on error
4190  */
4191 struct osd_object *osd_object_find(const struct lu_env *env,
4192                                    struct dt_object *dt,
4193                                    const struct lu_fid *fid)
4194 {
4195         struct lu_device  *ludev = dt->do_lu.lo_dev;
4196         struct osd_object *child = NULL;
4197         struct lu_object  *luch;
4198         struct lu_object  *lo;
4199
4200         /*
4201          * at this point topdev might not exist yet
4202          * (i.e. MGS is preparing profiles). so we can
4203          * not rely on topdev and instead lookup with
4204          * our device passed as topdev. this can't work
4205          * if the object isn't cached yet (as osd doesn't
4206          * allocate lu_header). IOW, the object must be
4207          * in the cache, otherwise lu_object_alloc() crashes
4208          * -bzzz
4209          */
4210         luch = lu_object_find_at(env, ludev->ld_site->ls_top_dev == NULL ?
4211                                  ludev : ludev->ld_site->ls_top_dev,
4212                                  fid, NULL);
4213         if (!IS_ERR(luch)) {
4214                 if (lu_object_exists(luch)) {
4215                         lo = lu_object_locate(luch->lo_header, ludev->ld_type);
4216                         if (lo != NULL)
4217                                 child = osd_obj(lo);
4218                         else
4219                                 LU_OBJECT_DEBUG(D_ERROR, env, luch,
4220                                                 "lu_object can't be located"
4221                                                 DFID"\n", PFID(fid));
4222
4223                         if (child == NULL) {
4224                                 lu_object_put(env, luch);
4225                                 CERROR("Unable to get osd_object\n");
4226                                 child = ERR_PTR(-ENOENT);
4227                         }
4228                 } else {
4229                         LU_OBJECT_DEBUG(D_ERROR, env, luch,
4230                                         "lu_object does not exists "DFID"\n",
4231                                         PFID(fid));
4232                         lu_object_put(env, luch);
4233                         child = ERR_PTR(-ENOENT);
4234                 }
4235         } else {
4236                 child = ERR_CAST(luch);
4237         }
4238
4239         return child;
4240 }
4241
4242 /**
4243  * Put the osd object once done with it.
4244  *
4245  * \param obj osd object that needs to be put
4246  */
4247 static inline void osd_object_put(const struct lu_env *env,
4248                                   struct osd_object *obj)
4249 {
4250         lu_object_put(env, &obj->oo_dt.do_lu);
4251 }
4252
4253 static int osd_index_declare_ea_insert(const struct lu_env *env,
4254                                        struct dt_object *dt,
4255                                        const struct dt_rec *rec,
4256                                        const struct dt_key *key,
4257                                        struct thandle *handle)
4258 {
4259         struct osd_thandle      *oh;
4260         struct osd_device       *osd   = osd_dev(dt->do_lu.lo_dev);
4261         struct lu_fid           *fid = (struct lu_fid *)rec;
4262         int                     rc;
4263         ENTRY;
4264
4265         LASSERT(!dt_object_remote(dt));
4266         LASSERT(handle != NULL);
4267
4268         oh = container_of0(handle, struct osd_thandle, ot_super);
4269         LASSERT(oh->ot_handle == NULL);
4270
4271         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4272                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
4273
4274         if (osd_dt_obj(dt)->oo_inode != NULL) {
4275                 struct inode *inode = osd_dt_obj(dt)->oo_inode;
4276
4277                 /* We ignore block quota on meta pool (MDTs), so needn't
4278                  * calculate how many blocks will be consumed by this index
4279                  * insert */
4280                 rc = osd_declare_inode_qid(env, inode->i_uid, inode->i_gid, 0,
4281                                            oh, true, true, NULL, false);
4282         }
4283
4284         if (fid == NULL)
4285                 RETURN(0);
4286
4287         rc = osd_remote_fid(env, osd, fid);
4288         if (rc <= 0)
4289                 RETURN(rc);
4290
4291         rc = 0;
4292
4293         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
4294                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
4295         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4296                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
4297         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4298                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
4299
4300         RETURN(rc);
4301 }
4302
4303 /**
4304  * Index add function for interoperability mode (b11826).
4305  * It will add the directory entry.This entry is needed to
4306  * maintain name->fid mapping.
4307  *
4308  * \param key it is key i.e. file entry to be inserted
4309  * \param rec it is value of given key i.e. fid
4310  *
4311  * \retval   0, on success
4312  * \retval -ve, on error
4313  */
4314 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
4315                                const struct dt_rec *rec,
4316                                const struct dt_key *key, struct thandle *th,
4317                                struct lustre_capa *capa, int ignore_quota)
4318 {
4319         struct osd_object       *obj = osd_dt_obj(dt);
4320         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
4321         struct lu_fid           *fid = (struct lu_fid *) rec;
4322         const char              *name = (const char *)key;
4323         struct osd_thread_info  *oti   = osd_oti_get(env);
4324         struct osd_inode_id     *id    = &oti->oti_id;
4325         struct inode            *child_inode = NULL;
4326         struct osd_object       *child = NULL;
4327         int                     rc;
4328         ENTRY;
4329
4330         LASSERT(osd_invariant(obj));
4331         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
4332         LASSERT(th != NULL);
4333
4334         osd_trans_exec_op(env, th, OSD_OT_INSERT);
4335
4336         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
4337                 RETURN(-EACCES);
4338
4339         LASSERTF(fid_is_sane(fid), "fid"DFID" is insane!", PFID(fid));
4340
4341         rc = osd_remote_fid(env, osd, fid);
4342         if (rc < 0) {
4343                 CERROR("%s: Can not find object "DFID" rc %d\n",
4344                        osd_name(osd), PFID(fid), rc);
4345                 RETURN(rc);
4346         }
4347
4348         if (rc == 1) {
4349                 /* Insert remote entry */
4350                 if (strcmp(name, dotdot) == 0 && strlen(name) == 2) {
4351                         struct osd_mdobj_map    *omm = osd->od_mdt_map;
4352                         struct osd_thandle      *oh;
4353
4354                         /* If parent on remote MDT, we need put this object
4355                          * under AGENT */
4356                         oh = container_of(th, typeof(*oh), ot_super);
4357                         rc = osd_add_to_remote_parent(env, osd, obj, oh);
4358                         if (rc != 0) {
4359                                 CERROR("%s: add "DFID" error: rc = %d\n",
4360                                        osd_name(osd),
4361                                        PFID(lu_object_fid(&dt->do_lu)), rc);
4362                                 RETURN(rc);
4363                         }
4364
4365                         child_inode = igrab(omm->omm_remote_parent->d_inode);
4366                 } else {
4367                         child_inode = osd_create_local_agent_inode(env, osd,
4368                                                                    obj, fid,
4369                                                                    th);
4370                         if (IS_ERR(child_inode))
4371                                 RETURN(PTR_ERR(child_inode));
4372                 }
4373         } else {
4374                 /* Insert local entry */
4375                 child = osd_object_find(env, dt, fid);
4376                 if (IS_ERR(child)) {
4377                         CERROR("%s: Can not find object "DFID"%u:%u: rc = %d\n",
4378                                osd_name(osd), PFID(fid),
4379                                id->oii_ino, id->oii_gen,
4380                                (int)PTR_ERR(child));
4381                         RETURN(PTR_ERR(child));
4382                 }
4383                 child_inode = igrab(child->oo_inode);
4384         }
4385
4386         rc = osd_ea_add_rec(env, obj, child_inode, name, rec, th);
4387
4388         CDEBUG(D_INODE, "parent %lu insert %s:%lu rc = %d\n",
4389                obj->oo_inode->i_ino, name, child_inode->i_ino, rc);
4390
4391         iput(child_inode);
4392         if (child != NULL)
4393                 osd_object_put(env, child);
4394         LASSERT(osd_invariant(obj));
4395         RETURN(rc);
4396 }
4397
4398 /**
4399  *  Initialize osd Iterator for given osd index object.
4400  *
4401  *  \param  dt      osd index object
4402  */
4403
4404 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
4405                                      struct dt_object *dt,
4406                                      __u32 unused,
4407                                      struct lustre_capa *capa)
4408 {
4409         struct osd_it_iam      *it;
4410         struct osd_thread_info *oti = osd_oti_get(env);
4411         struct osd_object      *obj = osd_dt_obj(dt);
4412         struct lu_object       *lo  = &dt->do_lu;
4413         struct iam_path_descr  *ipd;
4414         struct iam_container   *bag = &obj->oo_dir->od_container;
4415
4416         LASSERT(lu_object_exists(lo));
4417
4418         if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
4419                 return ERR_PTR(-EACCES);
4420
4421         it = &oti->oti_it;
4422         ipd = osd_it_ipd_get(env, bag);
4423         if (likely(ipd != NULL)) {
4424                 it->oi_obj = obj;
4425                 it->oi_ipd = ipd;
4426                 lu_object_get(lo);
4427                 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
4428                 return (struct dt_it *)it;
4429         }
4430         return ERR_PTR(-ENOMEM);
4431 }
4432
4433 /**
4434  * free given Iterator.
4435  */
4436
4437 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
4438 {
4439         struct osd_it_iam *it = (struct osd_it_iam *)di;
4440         struct osd_object *obj = it->oi_obj;
4441
4442         iam_it_fini(&it->oi_it);
4443         osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
4444         lu_object_put(env, &obj->oo_dt.do_lu);
4445 }
4446
4447 /**
4448  *  Move Iterator to record specified by \a key
4449  *
4450  *  \param  di      osd iterator
4451  *  \param  key     key for index
4452  *
4453  *  \retval +ve  di points to record with least key not larger than key
4454  *  \retval  0   di points to exact matched key
4455  *  \retval -ve  failure
4456  */
4457
4458 static int osd_it_iam_get(const struct lu_env *env,
4459                           struct dt_it *di, const struct dt_key *key)
4460 {
4461         struct osd_thread_info  *oti = osd_oti_get(env);
4462         struct osd_it_iam       *it = (struct osd_it_iam *)di;
4463
4464         if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4465                 /* swab quota uid/gid */
4466                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
4467                 key = (struct dt_key *)&oti->oti_quota_id;
4468         }
4469
4470         return iam_it_get(&it->oi_it, (const struct iam_key *)key);
4471 }
4472
4473 /**
4474  *  Release Iterator
4475  *
4476  *  \param  di      osd iterator
4477  */
4478 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
4479 {
4480         struct osd_it_iam *it = (struct osd_it_iam *)di;
4481
4482         iam_it_put(&it->oi_it);
4483 }
4484
4485 /**
4486  *  Move iterator by one record
4487  *
4488  *  \param  di      osd iterator
4489  *
4490  *  \retval +1   end of container reached
4491  *  \retval  0   success
4492  *  \retval -ve  failure
4493  */
4494
4495 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
4496 {
4497         struct osd_it_iam *it = (struct osd_it_iam *)di;
4498
4499         return iam_it_next(&it->oi_it);
4500 }
4501
4502 /**
4503  * Return pointer to the key under iterator.
4504  */
4505
4506 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
4507                                  const struct dt_it *di)
4508 {
4509         struct osd_thread_info *oti = osd_oti_get(env);
4510         struct osd_it_iam      *it = (struct osd_it_iam *)di;
4511         struct osd_object      *obj = it->oi_obj;
4512         struct dt_key          *key;
4513
4514         key = (struct dt_key *)iam_it_key_get(&it->oi_it);
4515
4516         if (!IS_ERR(key) && fid_is_quota(lu_object_fid(&obj->oo_dt.do_lu))) {
4517                 /* swab quota uid/gid */
4518                 oti->oti_quota_id = le64_to_cpu(*((__u64 *)key));
4519                 key = (struct dt_key *)&oti->oti_quota_id;
4520         }
4521
4522         return key;
4523 }
4524
4525 /**
4526  * Return size of key under iterator (in bytes)
4527  */
4528
4529 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
4530 {
4531         struct osd_it_iam *it = (struct osd_it_iam *)di;
4532
4533         return iam_it_key_size(&it->oi_it);
4534 }
4535
4536 static inline void
4537 osd_it_append_attrs(struct lu_dirent *ent, int len, __u16 type)
4538 {
4539         /* check if file type is required */
4540         if (ent->lde_attrs & LUDA_TYPE) {
4541                 struct luda_type *lt;
4542                 int align = sizeof(*lt) - 1;
4543
4544                 len = (len + align) & ~align;
4545                 lt = (struct luda_type *)(ent->lde_name + len);
4546                 lt->lt_type = cpu_to_le16(DTTOIF(type));
4547         }
4548
4549         ent->lde_attrs = cpu_to_le32(ent->lde_attrs);
4550 }
4551
4552 /**
4553  * build lu direct from backend fs dirent.
4554  */
4555
4556 static inline void
4557 osd_it_pack_dirent(struct lu_dirent *ent, struct lu_fid *fid, __u64 offset,
4558                    char *name, __u16 namelen, __u16 type, __u32 attr)
4559 {
4560         ent->lde_attrs = attr | LUDA_FID;
4561         fid_cpu_to_le(&ent->lde_fid, fid);
4562
4563         ent->lde_hash = cpu_to_le64(offset);
4564         ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr));
4565
4566         strncpy(ent->lde_name, name, namelen);
4567         ent->lde_name[namelen] = '\0';
4568         ent->lde_namelen = cpu_to_le16(namelen);
4569
4570         /* append lustre attributes */
4571         osd_it_append_attrs(ent, namelen, type);
4572 }
4573
4574 /**
4575  * Return pointer to the record under iterator.
4576  */
4577 static int osd_it_iam_rec(const struct lu_env *env,
4578                           const struct dt_it *di,
4579                           struct dt_rec *dtrec, __u32 attr)
4580 {
4581         struct osd_it_iam      *it   = (struct osd_it_iam *)di;
4582         struct osd_thread_info *info = osd_oti_get(env);
4583         ENTRY;
4584
4585         if (S_ISDIR(it->oi_obj->oo_inode->i_mode)) {
4586                 const struct osd_fid_pack *rec;
4587                 struct lu_fid             *fid = &info->oti_fid;
4588                 struct lu_dirent          *lde = (struct lu_dirent *)dtrec;
4589                 char                      *name;
4590                 int                        namelen;
4591                 __u64                      hash;
4592                 int                        rc;
4593
4594                 name = (char *)iam_it_key_get(&it->oi_it);
4595                 if (IS_ERR(name))
4596                         RETURN(PTR_ERR(name));
4597
4598                 namelen = iam_it_key_size(&it->oi_it);
4599
4600                 rec = (const struct osd_fid_pack *)iam_it_rec_get(&it->oi_it);
4601                 if (IS_ERR(rec))
4602                         RETURN(PTR_ERR(rec));
4603
4604                 rc = osd_fid_unpack(fid, rec);
4605                 if (rc)
4606                         RETURN(rc);
4607
4608                 hash = iam_it_store(&it->oi_it);
4609
4610                 /* IAM does not store object type in IAM index (dir) */
4611                 osd_it_pack_dirent(lde, fid, hash, name, namelen,
4612                                    0, LUDA_FID);
4613         } else if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4614                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4615                            (struct iam_rec *)dtrec);
4616                 osd_quota_unpack(it->oi_obj, dtrec);
4617         } else {
4618                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4619                            (struct iam_rec *)dtrec);
4620         }
4621
4622         RETURN(0);
4623 }
4624
4625 /**
4626  * Returns cookie for current Iterator position.
4627  */
4628 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
4629 {
4630         struct osd_it_iam *it = (struct osd_it_iam *)di;
4631
4632         return iam_it_store(&it->oi_it);
4633 }
4634
4635 /**
4636  * Restore iterator from cookie.
4637  *
4638  * \param  di      osd iterator
4639  * \param  hash    Iterator location cookie
4640  *
4641  * \retval +ve  di points to record with least key not larger than key.
4642  * \retval  0   di points to exact matched key
4643  * \retval -ve  failure
4644  */
4645
4646 static int osd_it_iam_load(const struct lu_env *env,
4647                            const struct dt_it *di, __u64 hash)
4648 {
4649         struct osd_it_iam *it = (struct osd_it_iam *)di;
4650
4651         return iam_it_load(&it->oi_it, hash);
4652 }
4653
4654 static const struct dt_index_operations osd_index_iam_ops = {
4655         .dio_lookup         = osd_index_iam_lookup,
4656         .dio_declare_insert = osd_index_declare_iam_insert,
4657         .dio_insert         = osd_index_iam_insert,
4658         .dio_declare_delete = osd_index_declare_iam_delete,
4659         .dio_delete         = osd_index_iam_delete,
4660         .dio_it     = {
4661                 .init     = osd_it_iam_init,
4662                 .fini     = osd_it_iam_fini,
4663                 .get      = osd_it_iam_get,
4664                 .put      = osd_it_iam_put,
4665                 .next     = osd_it_iam_next,
4666                 .key      = osd_it_iam_key,
4667                 .key_size = osd_it_iam_key_size,
4668                 .rec      = osd_it_iam_rec,
4669                 .store    = osd_it_iam_store,
4670                 .load     = osd_it_iam_load
4671         }
4672 };
4673
4674
4675 /**
4676  * Creates or initializes iterator context.
4677  *
4678  * \retval struct osd_it_ea, iterator structure on success
4679  *
4680  */
4681 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
4682                                     struct dt_object *dt,
4683                                     __u32 attr,
4684                                     struct lustre_capa *capa)
4685 {
4686         struct osd_object       *obj  = osd_dt_obj(dt);
4687         struct osd_thread_info  *info = osd_oti_get(env);
4688         struct osd_it_ea        *it   = &info->oti_it_ea;
4689         struct file             *file = &it->oie_file;
4690         struct lu_object        *lo   = &dt->do_lu;
4691         struct dentry           *obj_dentry = &info->oti_it_dentry;
4692         ENTRY;
4693         LASSERT(lu_object_exists(lo));
4694
4695         obj_dentry->d_inode = obj->oo_inode;
4696         obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
4697         obj_dentry->d_name.hash = 0;
4698
4699         it->oie_rd_dirent       = 0;
4700         it->oie_it_dirent       = 0;
4701         it->oie_dirent          = NULL;
4702         it->oie_buf             = info->oti_it_ea_buf;
4703         it->oie_obj             = obj;
4704
4705         /* Reset the "file" totally to avoid to reuse any old value from
4706          * former readdir handling, the "file->f_pos" should be zero. */
4707         memset(file, 0, sizeof(*file));
4708         /* Only FMODE_64BITHASH or FMODE_32BITHASH should be set, NOT both. */
4709         if (attr & LUDA_64BITHASH)
4710                 file->f_mode    = FMODE_64BITHASH;
4711         else
4712                 file->f_mode    = FMODE_32BITHASH;
4713         file->f_dentry          = obj_dentry;
4714         file->f_mapping         = obj->oo_inode->i_mapping;
4715         file->f_op              = obj->oo_inode->i_fop;
4716         set_file_inode(file, obj->oo_inode);
4717
4718         lu_object_get(lo);
4719         RETURN((struct dt_it *) it);
4720 }
4721
4722 /**
4723  * Destroy or finishes iterator context.
4724  *
4725  * \param di iterator structure to be destroyed
4726  */
4727 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
4728 {
4729         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4730         struct osd_object    *obj  = it->oie_obj;
4731         struct inode       *inode  = obj->oo_inode;
4732
4733         ENTRY;
4734         it->oie_file.f_op->release(inode, &it->oie_file);
4735         lu_object_put(env, &obj->oo_dt.do_lu);
4736         EXIT;
4737 }
4738
4739 /**
4740  * It position the iterator at given key, so that next lookup continues from
4741  * that key Or it is similar to dio_it->load() but based on a key,
4742  * rather than file position.
4743  *
4744  * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
4745  * to the beginning.
4746  *
4747  * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
4748  */
4749 static int osd_it_ea_get(const struct lu_env *env,
4750                          struct dt_it *di, const struct dt_key *key)
4751 {
4752         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4753
4754         ENTRY;
4755         LASSERT(((const char *)key)[0] == '\0');
4756         it->oie_file.f_pos      = 0;
4757         it->oie_rd_dirent       = 0;
4758         it->oie_it_dirent       = 0;
4759         it->oie_dirent          = NULL;
4760
4761         RETURN(+1);
4762 }
4763
4764 /**
4765  * Does nothing
4766  */
4767 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
4768 {
4769 }
4770
4771 struct osd_filldir_cbs {
4772 #ifdef HAVE_DIR_CONTEXT
4773         struct dir_context ctx;
4774 #endif
4775         struct osd_it_ea  *it;
4776 };
4777 /**
4778  * It is called internally by ->readdir(). It fills the
4779  * iterator's in-memory data structure with required
4780  * information i.e. name, namelen, rec_size etc.
4781  *
4782  * \param buf in which information to be filled in.
4783  * \param name name of the file in given dir
4784  *
4785  * \retval 0 on success
4786  * \retval 1 on buffer full
4787  */
4788 static int osd_ldiskfs_filldir(void *buf, const char *name, int namelen,
4789                                loff_t offset, __u64 ino,
4790                                unsigned d_type)
4791 {
4792         struct osd_it_ea        *it   = ((struct osd_filldir_cbs *)buf)->it;
4793         struct osd_object       *obj  = it->oie_obj;
4794         struct osd_it_ea_dirent *ent  = it->oie_dirent;
4795         struct lu_fid           *fid  = &ent->oied_fid;
4796         struct osd_fid_pack     *rec;
4797         ENTRY;
4798
4799         /* this should never happen */
4800         if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) {
4801                 CERROR("ldiskfs return invalid namelen %d\n", namelen);
4802                 RETURN(-EIO);
4803         }
4804
4805         if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen >
4806             OSD_IT_EA_BUFSIZE)
4807                 RETURN(1);
4808
4809         /* "." is just the object itself. */
4810         if (namelen == 1 && name[0] == '.') {
4811                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4812         } else if (d_type & LDISKFS_DIRENT_LUFID) {
4813                 rec = (struct osd_fid_pack*) (name + namelen + 1);
4814                 if (osd_fid_unpack(fid, rec) != 0)
4815                         fid_zero(fid);
4816         } else {
4817                 fid_zero(fid);
4818         }
4819         d_type &= ~LDISKFS_DIRENT_LUFID;
4820
4821         /* NOT export local root. */
4822         if (unlikely(osd_sb(osd_obj2dev(obj))->s_root->d_inode->i_ino == ino)) {
4823                 ino = obj->oo_inode->i_ino;
4824                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4825         }
4826
4827         ent->oied_ino     = ino;
4828         ent->oied_off     = offset;
4829         ent->oied_namelen = namelen;
4830         ent->oied_type    = d_type;
4831
4832         memcpy(ent->oied_name, name, namelen);
4833
4834         it->oie_rd_dirent++;
4835         it->oie_dirent = (void *) ent + cfs_size_round(sizeof(*ent) + namelen);
4836         RETURN(0);
4837 }
4838
4839 /**
4840  * Calls ->readdir() to load a directory entry at a time
4841  * and stored it in iterator's in-memory data structure.
4842  *
4843  * \param di iterator's in memory structure
4844  *
4845  * \retval   0 on success
4846  * \retval -ve on error
4847  * \retval +1 reach the end of entry
4848  */
4849 static int osd_ldiskfs_it_fill(const struct lu_env *env,
4850                                const struct dt_it *di)
4851 {
4852         struct osd_it_ea   *it    = (struct osd_it_ea *)di;
4853         struct osd_object  *obj   = it->oie_obj;
4854         struct inode       *inode = obj->oo_inode;
4855         struct htree_lock  *hlock = NULL;
4856         struct file        *filp  = &it->oie_file;
4857         int                 rc = 0;
4858         struct osd_filldir_cbs buf = {
4859 #ifdef HAVE_DIR_CONTEXT
4860                 .ctx.actor = osd_ldiskfs_filldir,
4861 #endif
4862                 .it = it
4863         };
4864
4865         ENTRY;
4866         it->oie_dirent = it->oie_buf;
4867         it->oie_rd_dirent = 0;
4868
4869         if (obj->oo_hl_head != NULL) {
4870                 hlock = osd_oti_get(env)->oti_hlock;
4871                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4872                                    inode, LDISKFS_HLOCK_READDIR);
4873         } else {
4874                 down_read(&obj->oo_ext_idx_sem);
4875         }
4876
4877 #ifdef HAVE_DIR_CONTEXT
4878         buf.ctx.pos = filp->f_pos;
4879         rc = inode->i_fop->iterate(filp, &buf.ctx);
4880         filp->f_pos = buf.ctx.pos;
4881 #else
4882         rc = inode->i_fop->readdir(filp, &buf, osd_ldiskfs_filldir);
4883 #endif
4884
4885         if (hlock != NULL)
4886                 ldiskfs_htree_unlock(hlock);
4887         else
4888                 up_read(&obj->oo_ext_idx_sem);
4889
4890         if (it->oie_rd_dirent == 0) {
4891                 /*If it does not get any dirent, it means it has been reached
4892                  *to the end of the dir */
4893                 it->oie_file.f_pos = ldiskfs_get_htree_eof(&it->oie_file);
4894                 if (rc == 0)
4895                         rc = 1;
4896         } else {
4897                 it->oie_dirent = it->oie_buf;
4898                 it->oie_it_dirent = 1;
4899         }
4900
4901         RETURN(rc);
4902 }
4903
4904 /**
4905  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4906  * to load a directory entry at a time and stored it in
4907  * iterator's in-memory data structure.
4908  *
4909  * \param di iterator's in memory structure
4910  *
4911  * \retval +ve iterator reached to end
4912  * \retval   0 iterator not reached to end
4913  * \retval -ve on error
4914  */
4915 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
4916 {
4917         struct osd_it_ea *it = (struct osd_it_ea *)di;
4918         int rc;
4919
4920         ENTRY;
4921
4922         if (it->oie_it_dirent < it->oie_rd_dirent) {
4923                 it->oie_dirent =
4924                         (void *) it->oie_dirent +
4925                         cfs_size_round(sizeof(struct osd_it_ea_dirent) +
4926                                        it->oie_dirent->oied_namelen);
4927                 it->oie_it_dirent++;
4928                 RETURN(0);
4929         } else {
4930                 if (it->oie_file.f_pos == ldiskfs_get_htree_eof(&it->oie_file))
4931                         rc = +1;
4932                 else
4933                         rc = osd_ldiskfs_it_fill(env, di);
4934         }
4935
4936         RETURN(rc);
4937 }
4938
4939 /**
4940  * Returns the key at current position from iterator's in memory structure.
4941  *
4942  * \param di iterator's in memory structure
4943  *
4944  * \retval key i.e. struct dt_key on success
4945  */
4946 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
4947                                     const struct dt_it *di)
4948 {
4949         struct osd_it_ea *it = (struct osd_it_ea *)di;
4950
4951         return (struct dt_key *)it->oie_dirent->oied_name;
4952 }
4953
4954 /**
4955  * Returns the key's size at current position from iterator's in memory structure.
4956  *
4957  * \param di iterator's in memory structure
4958  *
4959  * \retval key_size i.e. struct dt_key on success
4960  */
4961 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
4962 {
4963         struct osd_it_ea *it = (struct osd_it_ea *)di;
4964
4965         return it->oie_dirent->oied_namelen;
4966 }
4967
4968 static int
4969 osd_dirent_update(handle_t *jh, struct super_block *sb,
4970                   struct osd_it_ea_dirent *ent, struct lu_fid *fid,
4971                   struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de)
4972 {
4973         struct osd_fid_pack *rec;
4974         int                  rc;
4975         ENTRY;
4976
4977         LASSERT(de->file_type & LDISKFS_DIRENT_LUFID);
4978         LASSERT(de->rec_len >= de->name_len + sizeof(struct osd_fid_pack));
4979
4980         rc = ldiskfs_journal_get_write_access(jh, bh);
4981         if (rc != 0) {
4982                 CERROR("%.16s: fail to write access for update dirent: "
4983                        "name = %.*s, rc = %d\n",
4984                        LDISKFS_SB(sb)->s_es->s_volume_name,
4985                        ent->oied_namelen, ent->oied_name, rc);
4986                 RETURN(rc);
4987         }
4988
4989         rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
4990         fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
4991         rc = ldiskfs_journal_dirty_metadata(jh, bh);
4992         if (rc != 0)
4993                 CERROR("%.16s: fail to dirty metadata for update dirent: "
4994                        "name = %.*s, rc = %d\n",
4995                        LDISKFS_SB(sb)->s_es->s_volume_name,
4996                        ent->oied_namelen, ent->oied_name, rc);
4997
4998         RETURN(rc);
4999 }
5000
5001 static inline int
5002 osd_dirent_has_space(__u16 reclen, __u16 namelen, unsigned blocksize)
5003 {
5004         if (ldiskfs_rec_len_from_disk(reclen, blocksize) >=
5005             __LDISKFS_DIR_REC_LEN(namelen + 1 + sizeof(struct osd_fid_pack)))
5006                 return 1;
5007         else
5008                 return 0;
5009 }
5010
5011 static inline int
5012 osd_dot_dotdot_has_space(struct ldiskfs_dir_entry_2 *de, int dot_dotdot)
5013 {
5014         LASSERTF(dot_dotdot == 1 || dot_dotdot == 2,
5015                  "dot_dotdot = %d\n", dot_dotdot);
5016
5017         if (LDISKFS_DIR_REC_LEN(de) >=
5018             __LDISKFS_DIR_REC_LEN(dot_dotdot + 1 + sizeof(struct osd_fid_pack)))
5019                 return 1;
5020         else
5021                 return 0;
5022 }
5023
5024 static int
5025 osd_dirent_reinsert(const struct lu_env *env, handle_t *jh,
5026                     struct inode *dir, struct inode *inode,
5027                     struct osd_it_ea_dirent *ent, struct lu_fid *fid,
5028                     struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de,
5029                     struct htree_lock *hlock)
5030 {
5031         struct dentry               *dentry;
5032         struct osd_fid_pack         *rec;
5033         struct ldiskfs_dentry_param *ldp;
5034         int                          rc;
5035         ENTRY;
5036
5037         if (!LDISKFS_HAS_INCOMPAT_FEATURE(inode->i_sb,
5038                                           LDISKFS_FEATURE_INCOMPAT_DIRDATA))
5039                 RETURN(0);
5040
5041         /* There is enough space to hold the FID-in-dirent. */
5042         if (osd_dirent_has_space(de->rec_len, ent->oied_namelen,
5043                                  dir->i_sb->s_blocksize)) {
5044                 rc = ldiskfs_journal_get_write_access(jh, bh);
5045                 if (rc != 0) {
5046                         CERROR("%.16s: fail to write access for reinsert "
5047                                "dirent: name = %.*s, rc = %d\n",
5048                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5049                                ent->oied_namelen, ent->oied_name, rc);
5050                         RETURN(rc);
5051                 }
5052
5053                 de->name[de->name_len] = 0;
5054                 rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
5055                 rec->fp_len = sizeof(struct lu_fid) + 1;
5056                 fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
5057                 de->file_type |= LDISKFS_DIRENT_LUFID;
5058
5059                 rc = ldiskfs_journal_dirty_metadata(jh, bh);
5060                 if (rc != 0)
5061                         CERROR("%.16s: fail to dirty metadata for reinsert "
5062                                "dirent: name = %.*s, rc = %d\n",
5063                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5064                                ent->oied_namelen, ent->oied_name, rc);
5065
5066                 RETURN(rc);
5067         }
5068
5069         rc = ldiskfs_delete_entry(jh, dir, de, bh);
5070         if (rc != 0) {
5071                 CERROR("%.16s: fail to delete entry for reinsert dirent: "
5072                        "name = %.*s, rc = %d\n",
5073                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5074                        ent->oied_namelen, ent->oied_name, rc);
5075                 RETURN(rc);
5076         }
5077
5078         dentry = osd_child_dentry_by_inode(env, dir, ent->oied_name,
5079                                            ent->oied_namelen);
5080         ldp = (struct ldiskfs_dentry_param *)osd_oti_get(env)->oti_ldp;
5081         osd_get_ldiskfs_dirent_param(ldp, (const struct dt_rec *)fid);
5082         dentry->d_fsdata = (void *)ldp;
5083         ll_vfs_dq_init(dir);
5084         rc = osd_ldiskfs_add_entry(jh, dentry, inode, hlock);
5085         /* It is too bad, we cannot reinsert the name entry back.
5086          * That means we lose it! */
5087         if (rc != 0)
5088                 CERROR("%.16s: fail to insert entry for reinsert dirent: "
5089                        "name = %.*s, rc = %d\n",
5090                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5091                        ent->oied_namelen, ent->oied_name, rc);
5092
5093         RETURN(rc);
5094 }
5095
5096 static int
5097 osd_dirent_check_repair(const struct lu_env *env, struct osd_object *obj,
5098                         struct osd_it_ea *it, struct lu_fid *fid,
5099                         struct osd_inode_id *id, __u32 *attr)
5100 {
5101         struct osd_thread_info     *info        = osd_oti_get(env);
5102         struct lustre_mdt_attrs    *lma         = &info->oti_mdt_attrs;
5103         struct osd_device          *dev         = osd_obj2dev(obj);
5104         struct super_block         *sb          = osd_sb(dev);
5105         const char                 *devname     =
5106                                         LDISKFS_SB(sb)->s_es->s_volume_name;
5107         struct osd_it_ea_dirent    *ent         = it->oie_dirent;
5108         struct inode               *dir         = obj->oo_inode;
5109         struct htree_lock          *hlock       = NULL;
5110         struct buffer_head         *bh          = NULL;
5111         handle_t                   *jh          = NULL;
5112         struct ldiskfs_dir_entry_2 *de;
5113         struct dentry              *dentry;
5114         struct inode               *inode;
5115         int                         credits;
5116         int                         rc;
5117         int                         dot_dotdot  = 0;
5118         bool                        dirty       = false;
5119         ENTRY;
5120
5121         if (ent->oied_name[0] == '.') {
5122                 if (ent->oied_namelen == 1)
5123                         dot_dotdot = 1;
5124                 else if (ent->oied_namelen == 2 && ent->oied_name[1] == '.')
5125                         dot_dotdot = 2;
5126         }
5127
5128         dentry = osd_child_dentry_get(env, obj, ent->oied_name,
5129                                       ent->oied_namelen);
5130
5131         /* We need to ensure that the name entry is still valid.
5132          * Because it may be removed or renamed by other already.
5133          *
5134          * The unlink or rename operation will start journal before PDO lock,
5135          * so to avoid deadlock, here we need to start journal handle before
5136          * related PDO lock also. But because we do not know whether there
5137          * will be something to be repaired before PDO lock, we just start
5138          * journal without conditions.
5139          *
5140          * We may need to remove the name entry firstly, then insert back.
5141          * One credit is for user quota file update.
5142          * One credit is for group quota file update.
5143          * Two credits are for dirty inode. */
5144         credits = osd_dto_credits_noquota[DTO_INDEX_DELETE] +
5145                   osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1 + 1 + 2;
5146
5147 again:
5148         if (dev->od_dirent_journal) {
5149                 jh = osd_journal_start_sb(sb, LDISKFS_HT_MISC, credits);
5150                 if (IS_ERR(jh)) {
5151                         rc = PTR_ERR(jh);
5152                         CERROR("%.16s: fail to start trans for dirent "
5153                                "check_repair: credits %d, name %.*s, rc %d\n",
5154                                devname, credits, ent->oied_namelen,
5155                                ent->oied_name, rc);
5156                         RETURN(rc);
5157                 }
5158
5159                 if (obj->oo_hl_head != NULL) {
5160                         hlock = osd_oti_get(env)->oti_hlock;
5161                         /* "0" means exclusive lock for the whole directory.
5162                          * We need to prevent others access such name entry
5163                          * during the delete + insert. Neither HLOCK_ADD nor
5164                          * HLOCK_DEL cannot guarantee the atomicity. */
5165                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir, 0);
5166                 } else {
5167                         down_write(&obj->oo_ext_idx_sem);
5168                 }
5169         } else {
5170                 if (obj->oo_hl_head != NULL) {
5171                         hlock = osd_oti_get(env)->oti_hlock;
5172                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir,
5173                                            LDISKFS_HLOCK_LOOKUP);
5174                 } else {
5175                         down_read(&obj->oo_ext_idx_sem);
5176                 }
5177         }
5178
5179         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
5180         /* For dot/dotdot entry, if there is not enough space to hold the
5181          * FID-in-dirent, just keep them there. It only happens when the
5182          * device upgraded from 1.8 or restored from MDT file-level backup.
5183          * For the whole directory, only dot/dotdot entry have no FID-in-dirent
5184          * and needs to get FID from LMA when readdir, it will not affect the
5185          * performance much. */
5186         if ((bh == NULL) || (le32_to_cpu(de->inode) != ent->oied_ino) ||
5187             (dot_dotdot != 0 && !osd_dot_dotdot_has_space(de, dot_dotdot))) {
5188                 *attr |= LUDA_IGNORE;
5189                 GOTO(out_journal, rc = 0);
5190         }
5191
5192         osd_id_gen(id, ent->oied_ino, OSD_OII_NOGEN);
5193         inode = osd_iget(info, dev, id);
5194         if (IS_ERR(inode)) {
5195                 rc = PTR_ERR(inode);
5196                 if (rc == -ENOENT || rc == -ESTALE) {
5197                         *attr |= LUDA_IGNORE;
5198                         rc = 0;
5199                 }
5200
5201                 GOTO(out_journal, rc);
5202         }
5203
5204         /* skip the REMOTE_PARENT_DIR. */
5205         if (inode == dev->od_mdt_map->omm_remote_parent->d_inode)
5206                 GOTO(out_inode, rc = 0);
5207
5208         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
5209         if (rc == 0) {
5210                 LASSERT(!(lma->lma_compat & LMAC_NOT_IN_OI));
5211
5212                 if (fid_is_sane(fid)) {
5213                         /* FID-in-dirent is valid. */
5214                         if (lu_fid_eq(fid, &lma->lma_self_fid))
5215                                 GOTO(out_inode, rc = 0);
5216
5217                         /* Do not repair under dryrun mode. */
5218                         if (*attr & LUDA_VERIFY_DRYRUN) {
5219                                 *attr |= LUDA_REPAIR;
5220                                 GOTO(out_inode, rc = 0);
5221                         }
5222
5223                         if (!dev->od_dirent_journal) {
5224                                 iput(inode);
5225                                 brelse(bh);
5226                                 if (hlock != NULL)
5227                                         ldiskfs_htree_unlock(hlock);
5228                                 else
5229                                         up_read(&obj->oo_ext_idx_sem);
5230                                 dev->od_dirent_journal = 1;
5231                                 goto again;
5232                         }
5233
5234                         *fid = lma->lma_self_fid;
5235                         dirty = true;
5236                         /* Update the FID-in-dirent. */
5237                         rc = osd_dirent_update(jh, sb, ent, fid, bh, de);
5238                         if (rc == 0)
5239                                 *attr |= LUDA_REPAIR;
5240                 } else {
5241                         /* Do not repair under dryrun mode. */
5242                         if (*attr & LUDA_VERIFY_DRYRUN) {
5243                                 *fid = lma->lma_self_fid;
5244                                 *attr |= LUDA_REPAIR;
5245                                 GOTO(out_inode, rc = 0);
5246                         }
5247
5248                         if (!dev->od_dirent_journal) {
5249                                 iput(inode);
5250                                 brelse(bh);
5251                                 if (hlock != NULL)
5252                                         ldiskfs_htree_unlock(hlock);
5253                                 else
5254                                         up_read(&obj->oo_ext_idx_sem);
5255                                 dev->od_dirent_journal = 1;
5256                                 goto again;
5257                         }
5258
5259                         *fid = lma->lma_self_fid;
5260                         dirty = true;
5261                         /* Append the FID-in-dirent. */
5262                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
5263                                                  fid, bh, de, hlock);
5264                         if (rc == 0)
5265                                 *attr |= LUDA_REPAIR;
5266                 }
5267         } else if (rc == -ENODATA) {
5268                 /* Do not repair under dryrun mode. */
5269                 if (*attr & LUDA_VERIFY_DRYRUN) {
5270                         if (fid_is_sane(fid)) {
5271                                 *attr |= LUDA_REPAIR;
5272                         } else {
5273                                 lu_igif_build(fid, inode->i_ino,
5274                                               inode->i_generation);
5275                                 *attr |= LUDA_UPGRADE;
5276                         }
5277                         GOTO(out_inode, rc = 0);
5278                 }
5279
5280                 if (!dev->od_dirent_journal) {
5281                         iput(inode);
5282                         brelse(bh);
5283                         if (hlock != NULL)
5284                                 ldiskfs_htree_unlock(hlock);
5285                         else
5286                                 up_read(&obj->oo_ext_idx_sem);
5287                         dev->od_dirent_journal = 1;
5288                         goto again;
5289                 }
5290
5291                 dirty = true;
5292                 if (unlikely(fid_is_sane(fid))) {
5293                         /* FID-in-dirent exists, but FID-in-LMA is lost.
5294                          * Trust the FID-in-dirent, and add FID-in-LMA. */
5295                         rc = osd_ea_fid_set(info, inode, fid, 0, 0);
5296                         if (rc == 0)
5297                                 *attr |= LUDA_REPAIR;
5298                 } else {
5299                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
5300                         /* It is probably IGIF object. Only aappend the
5301                          * FID-in-dirent. OI scrub will process FID-in-LMA. */
5302                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
5303                                                  fid, bh, de, hlock);
5304                         if (rc == 0)
5305                                 *attr |= LUDA_UPGRADE;
5306                 }
5307         }
5308
5309         GOTO(out_inode, rc);
5310
5311 out_inode:
5312         iput(inode);
5313
5314 out_journal:
5315         brelse(bh);
5316         if (hlock != NULL) {
5317                 ldiskfs_htree_unlock(hlock);
5318         } else {
5319                 if (dev->od_dirent_journal)
5320                         up_write(&obj->oo_ext_idx_sem);
5321                 else
5322                         up_read(&obj->oo_ext_idx_sem);
5323         }
5324         if (jh != NULL)
5325                 ldiskfs_journal_stop(jh);
5326         if (rc >= 0 && !dirty)
5327                 dev->od_dirent_journal = 0;
5328         return rc;
5329 }
5330
5331 /**
5332  * Returns the value at current position from iterator's in memory structure.
5333  *
5334  * \param di struct osd_it_ea, iterator's in memory structure
5335  * \param attr attr requested for dirent.
5336  * \param lde lustre dirent
5337  *
5338  * \retval   0 no error and \param lde has correct lustre dirent.
5339  * \retval -ve on error
5340  */
5341 static inline int osd_it_ea_rec(const struct lu_env *env,
5342                                 const struct dt_it *di,
5343                                 struct dt_rec *dtrec, __u32 attr)
5344 {
5345         struct osd_it_ea       *it    = (struct osd_it_ea *)di;
5346         struct osd_object      *obj   = it->oie_obj;
5347         struct osd_device      *dev   = osd_obj2dev(obj);
5348         struct osd_scrub       *scrub = &dev->od_scrub;
5349         struct scrub_file      *sf    = &scrub->os_file;
5350         struct osd_thread_info *oti   = osd_oti_get(env);
5351         struct osd_inode_id    *id    = &oti->oti_id;
5352         struct osd_idmap_cache *oic   = &oti->oti_cache;
5353         struct lu_fid          *fid   = &it->oie_dirent->oied_fid;
5354         struct lu_dirent       *lde   = (struct lu_dirent *)dtrec;
5355         __u32                   ino   = it->oie_dirent->oied_ino;
5356         int                     rc    = 0;
5357         ENTRY;
5358
5359         if (attr & LUDA_VERIFY) {
5360                 attr |= LUDA_TYPE;
5361                 if (unlikely(ino == osd_sb(dev)->s_root->d_inode->i_ino)) {
5362                         attr |= LUDA_IGNORE;
5363                         rc = 0;
5364                 } else {
5365                         rc = osd_dirent_check_repair(env, obj, it, fid, id,
5366                                                      &attr);
5367                 }
5368         } else {
5369                 attr &= ~LU_DIRENT_ATTRS_MASK;
5370                 if (!fid_is_sane(fid)) {
5371                         if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP) &&
5372                             likely(it->oie_dirent->oied_namelen != 2 ||
5373                                    it->oie_dirent->oied_name[0] != '.' ||
5374                                    it->oie_dirent->oied_name[1] != '.'))
5375                                 RETURN(-ENOENT);
5376
5377                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
5378                 } else {
5379                         osd_id_gen(id, ino, OSD_OII_NOGEN);
5380                 }
5381         }
5382
5383         /* Pack the entry anyway, at least the offset is right. */
5384         osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off,
5385                            it->oie_dirent->oied_name,
5386                            it->oie_dirent->oied_namelen,
5387                            it->oie_dirent->oied_type, attr);
5388
5389         if (rc < 0)
5390                 RETURN(rc);
5391
5392         if (osd_remote_fid(env, dev, fid))
5393                 RETURN(0);
5394
5395         if (likely(!(attr & LUDA_IGNORE)))
5396                 rc = osd_add_oi_cache(oti, dev, id, fid);
5397
5398         if (!(attr & LUDA_VERIFY) &&
5399             (scrub->os_pos_current <= ino) &&
5400             ((sf->sf_flags & SF_INCONSISTENT) ||
5401              (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
5402              ldiskfs_test_bit(osd_oi_fid2idx(dev, fid), sf->sf_oi_bitmap)))
5403                 osd_consistency_check(oti, dev, oic);
5404
5405         RETURN(rc);
5406 }
5407
5408 /**
5409  * Returns the record size size at current position.
5410  *
5411  * This function will return record(lu_dirent) size in bytes.
5412  *
5413  * \param[in] env       execution environment
5414  * \param[in] di        iterator's in memory structure
5415  * \param[in] attr      attribute of the entry, only requires LUDA_TYPE to
5416  *                      calculate the lu_dirent size.
5417  *
5418  * \retval      record size(in bytes & in memory) of the current lu_dirent
5419  *              entry.
5420  */
5421 static int osd_it_ea_rec_size(const struct lu_env *env, const struct dt_it *di,
5422                               __u32 attr)
5423 {
5424         struct osd_it_ea *it = (struct osd_it_ea *)di;
5425
5426         return lu_dirent_calc_size(it->oie_dirent->oied_namelen, attr);
5427 }
5428
5429 /**
5430  * Returns a cookie for current position of the iterator head, so that
5431  * user can use this cookie to load/start the iterator next time.
5432  *
5433  * \param di iterator's in memory structure
5434  *
5435  * \retval cookie for current position, on success
5436  */
5437 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
5438 {
5439         struct osd_it_ea *it = (struct osd_it_ea *)di;
5440
5441         return it->oie_dirent->oied_off;
5442 }
5443
5444 /**
5445  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
5446  * to load a directory entry at a time and stored it i inn,
5447  * in iterator's in-memory data structure.
5448  *
5449  * \param di struct osd_it_ea, iterator's in memory structure
5450  *
5451  * \retval +ve on success
5452  * \retval -ve on error
5453  */
5454 static int osd_it_ea_load(const struct lu_env *env,
5455                           const struct dt_it *di, __u64 hash)
5456 {
5457         struct osd_it_ea *it = (struct osd_it_ea *)di;
5458         int rc;
5459
5460         ENTRY;
5461         it->oie_file.f_pos = hash;
5462
5463         rc =  osd_ldiskfs_it_fill(env, di);
5464         if (rc > 0)
5465                 rc = -ENODATA;
5466
5467         if (rc == 0)
5468                 rc = +1;
5469
5470         RETURN(rc);
5471 }
5472
5473 /**
5474  * Index lookup function for interoperability mode (b11826).
5475  *
5476  * \param key,  key i.e. file name to be searched
5477  *
5478  * \retval +ve, on success
5479  * \retval -ve, on error
5480  */
5481 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
5482                                struct dt_rec *rec, const struct dt_key *key,
5483                                struct lustre_capa *capa)
5484 {
5485         struct osd_object *obj = osd_dt_obj(dt);
5486         int rc = 0;
5487
5488         ENTRY;
5489
5490         LASSERT(S_ISDIR(obj->oo_inode->i_mode));
5491         LINVRNT(osd_invariant(obj));
5492
5493         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
5494                 return -EACCES;
5495
5496         rc = osd_ea_lookup_rec(env, obj, rec, key);
5497         if (rc == 0)
5498                 rc = +1;
5499         RETURN(rc);
5500 }
5501
5502 /**
5503  * Index and Iterator operations for interoperability
5504  * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
5505  */
5506 static const struct dt_index_operations osd_index_ea_ops = {
5507         .dio_lookup         = osd_index_ea_lookup,
5508         .dio_declare_insert = osd_index_declare_ea_insert,
5509         .dio_insert         = osd_index_ea_insert,
5510         .dio_declare_delete = osd_index_declare_ea_delete,
5511         .dio_delete         = osd_index_ea_delete,
5512         .dio_it     = {
5513                 .init     = osd_it_ea_init,
5514                 .fini     = osd_it_ea_fini,
5515                 .get      = osd_it_ea_get,
5516                 .put      = osd_it_ea_put,
5517                 .next     = osd_it_ea_next,
5518                 .key      = osd_it_ea_key,
5519                 .key_size = osd_it_ea_key_size,
5520                 .rec      = osd_it_ea_rec,
5521                 .rec_size = osd_it_ea_rec_size,
5522                 .store    = osd_it_ea_store,
5523                 .load     = osd_it_ea_load
5524         }
5525 };
5526
5527 static void *osd_key_init(const struct lu_context *ctx,
5528                           struct lu_context_key *key)
5529 {
5530         struct osd_thread_info *info;
5531
5532         OBD_ALLOC_PTR(info);
5533         if (info == NULL)
5534                 return ERR_PTR(-ENOMEM);
5535
5536         OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5537         if (info->oti_it_ea_buf == NULL)
5538                 goto out_free_info;
5539
5540         info->oti_env = container_of(ctx, struct lu_env, le_ctx);
5541
5542         info->oti_hlock = ldiskfs_htree_lock_alloc();
5543         if (info->oti_hlock == NULL)
5544                 goto out_free_ea;
5545
5546         return info;
5547
5548  out_free_ea:
5549         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5550  out_free_info:
5551         OBD_FREE_PTR(info);
5552         return ERR_PTR(-ENOMEM);
5553 }
5554
5555 static void osd_key_fini(const struct lu_context *ctx,
5556                          struct lu_context_key *key, void* data)
5557 {
5558         struct osd_thread_info *info = data;
5559
5560         if (info->oti_hlock != NULL)
5561                 ldiskfs_htree_lock_free(info->oti_hlock);
5562         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5563         lu_buf_free(&info->oti_iobuf.dr_pg_buf);
5564         lu_buf_free(&info->oti_iobuf.dr_bl_buf);
5565         OBD_FREE_PTR(info);
5566 }
5567
5568 static void osd_key_exit(const struct lu_context *ctx,
5569                          struct lu_context_key *key, void *data)
5570 {
5571         struct osd_thread_info *info = data;
5572
5573         LASSERT(info->oti_r_locks == 0);
5574         LASSERT(info->oti_w_locks == 0);
5575         LASSERT(info->oti_txns    == 0);
5576 }
5577
5578 /* type constructor/destructor: osd_type_init, osd_type_fini */
5579 LU_TYPE_INIT_FINI(osd, &osd_key);
5580
5581 struct lu_context_key osd_key = {
5582         .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
5583         .lct_init = osd_key_init,
5584         .lct_fini = osd_key_fini,
5585         .lct_exit = osd_key_exit
5586 };
5587
5588
5589 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
5590                            const char *name, struct lu_device *next)
5591 {
5592         struct osd_device *osd = osd_dev(d);
5593
5594         if (strlcpy(osd->od_svname, name, sizeof(osd->od_svname))
5595             >= sizeof(osd->od_svname))
5596                 return -E2BIG;
5597         return osd_procfs_init(osd, name);
5598 }
5599
5600 static int osd_fid_init(const struct lu_env *env, struct osd_device *osd)
5601 {
5602         struct seq_server_site  *ss = osd_seq_site(osd);
5603         int                     rc;
5604         ENTRY;
5605
5606         if (osd->od_is_ost || osd->od_cl_seq != NULL)
5607                 RETURN(0);
5608
5609         if (unlikely(ss == NULL))
5610                 RETURN(-ENODEV);
5611
5612         OBD_ALLOC_PTR(osd->od_cl_seq);
5613         if (osd->od_cl_seq == NULL)
5614                 RETURN(-ENOMEM);
5615
5616         rc = seq_client_init(osd->od_cl_seq, NULL, LUSTRE_SEQ_METADATA,
5617                              osd->od_svname, ss->ss_server_seq);
5618
5619         if (rc != 0) {
5620                 OBD_FREE_PTR(osd->od_cl_seq);
5621                 osd->od_cl_seq = NULL;
5622         }
5623
5624         RETURN(rc);
5625 }
5626
5627 static void osd_fid_fini(const struct lu_env *env, struct osd_device *osd)
5628 {
5629         if (osd->od_cl_seq == NULL)
5630                 return;
5631
5632         seq_client_fini(osd->od_cl_seq);
5633         OBD_FREE_PTR(osd->od_cl_seq);
5634         osd->od_cl_seq = NULL;
5635 }
5636
5637 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
5638 {
5639         ENTRY;
5640
5641         /* shutdown quota slave instance associated with the device */
5642         if (o->od_quota_slave != NULL) {
5643                 qsd_fini(env, o->od_quota_slave);
5644                 o->od_quota_slave = NULL;
5645         }
5646
5647         osd_fid_fini(env, o);
5648
5649         RETURN(0);
5650 }
5651
5652 static void osd_umount(const struct lu_env *env, struct osd_device *o)
5653 {
5654         ENTRY;
5655
5656         if (o->od_mnt != NULL) {
5657                 shrink_dcache_sb(osd_sb(o));
5658                 osd_sync(env, &o->od_dt_dev);
5659
5660                 mntput(o->od_mnt);
5661                 o->od_mnt = NULL;
5662         }
5663
5664         EXIT;
5665 }
5666
5667 static int osd_mount(const struct lu_env *env,
5668                      struct osd_device *o, struct lustre_cfg *cfg)
5669 {
5670         const char              *name  = lustre_cfg_string(cfg, 0);
5671         const char              *dev  = lustre_cfg_string(cfg, 1);
5672         const char              *opts;
5673         unsigned long            page, s_flags, lmd_flags = 0;
5674         struct page             *__page;
5675         struct file_system_type *type;
5676         char                    *options = NULL;
5677         char                    *str;
5678         struct osd_thread_info  *info = osd_oti_get(env);
5679         struct lu_fid           *fid = &info->oti_fid;
5680         struct inode            *inode;
5681         int                      rc = 0;
5682         ENTRY;
5683
5684         if (o->od_mnt != NULL)
5685                 RETURN(0);
5686
5687         if (strlen(dev) >= sizeof(o->od_mntdev))
5688                 RETURN(-E2BIG);
5689         strcpy(o->od_mntdev, dev);
5690
5691         OBD_PAGE_ALLOC(__page, GFP_IOFS);
5692         if (__page == NULL)
5693                 GOTO(out, rc = -ENOMEM);
5694
5695         str = lustre_cfg_string(cfg, 2);
5696         s_flags = simple_strtoul(str, NULL, 0);
5697         str = strstr(str, ":");
5698         if (str)
5699                 lmd_flags = simple_strtoul(str + 1, NULL, 0);
5700         opts = lustre_cfg_string(cfg, 3);
5701         page = (unsigned long)page_address(__page);
5702         options = (char *)page;
5703         *options = '\0';
5704         if (opts == NULL)
5705                 strcat(options, "user_xattr,acl");
5706         else
5707                 strcat(options, opts);
5708
5709         /* Glom up mount options */
5710         if (*options != '\0')
5711                 strcat(options, ",");
5712         strlcat(options, "no_mbcache", PAGE_CACHE_SIZE);
5713
5714         type = get_fs_type("ldiskfs");
5715         if (!type) {
5716                 CERROR("%s: cannot find ldiskfs module\n", name);
5717                 GOTO(out, rc = -ENODEV);
5718         }
5719
5720         o->od_mnt = vfs_kern_mount(type, s_flags, dev, options);
5721         module_put(type->owner);
5722
5723         if (IS_ERR(o->od_mnt)) {
5724                 rc = PTR_ERR(o->od_mnt);
5725                 o->od_mnt = NULL;
5726                 CERROR("%s: can't mount %s: %d\n", name, dev, rc);
5727                 GOTO(out, rc);
5728         }
5729
5730 #ifdef HAVE_DEV_SET_RDONLY
5731         if (dev_check_rdonly(o->od_mnt->mnt_sb->s_bdev)) {
5732                 CERROR("%s: underlying device %s is marked as read-only. "
5733                        "Setup failed\n", name, dev);
5734                 GOTO(out_mnt, rc = -EROFS);
5735         }
5736 #endif
5737
5738         if (!LDISKFS_HAS_COMPAT_FEATURE(o->od_mnt->mnt_sb,
5739                                         LDISKFS_FEATURE_COMPAT_HAS_JOURNAL)) {
5740                 CERROR("%s: device %s is mounted w/o journal\n", name, dev);
5741                 GOTO(out_mnt, rc = -EINVAL);
5742         }
5743
5744 #ifdef LDISKFS_MOUNT_DIRDATA
5745         if (LDISKFS_HAS_INCOMPAT_FEATURE(o->od_mnt->mnt_sb,
5746                                          LDISKFS_FEATURE_INCOMPAT_DIRDATA))
5747                 LDISKFS_SB(osd_sb(o))->s_mount_opt |= LDISKFS_MOUNT_DIRDATA;
5748         else if (!o->od_is_ost)
5749                 CWARN("%s: device %s was upgraded from Lustre-1.x without "
5750                       "enabling the dirdata feature. If you do not want to "
5751                       "downgrade to Lustre-1.x again, you can enable it via "
5752                       "'tune2fs -O dirdata device'\n", name, dev);
5753 #endif
5754         inode = osd_sb(o)->s_root->d_inode;
5755         lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
5756         rc = osd_ea_fid_set(info, inode, fid, LMAC_NOT_IN_OI, 0);
5757         if (rc != 0) {
5758                 CERROR("%s: failed to set lma on %s root inode\n", name, dev);
5759                 GOTO(out_mnt, rc);
5760         }
5761
5762         if (lmd_flags & LMD_FLG_NOSCRUB)
5763                 o->od_noscrub = 1;
5764
5765         GOTO(out, rc = 0);
5766
5767 out_mnt:
5768         mntput(o->od_mnt);
5769         o->od_mnt = NULL;
5770
5771 out:
5772         if (__page)
5773                 OBD_PAGE_FREE(__page);
5774
5775         return rc;
5776 }
5777
5778 static struct lu_device *osd_device_fini(const struct lu_env *env,
5779                                          struct lu_device *d)
5780 {
5781         struct osd_device *o = osd_dev(d);
5782         ENTRY;
5783
5784         osd_shutdown(env, o);
5785         osd_procfs_fini(o);
5786         osd_scrub_cleanup(env, o);
5787         osd_obj_map_fini(o);
5788         osd_umount(env, o);
5789
5790         RETURN(NULL);
5791 }
5792
5793 static int osd_device_init0(const struct lu_env *env,
5794                             struct osd_device *o,
5795                             struct lustre_cfg *cfg)
5796 {
5797         struct lu_device        *l = osd2lu_dev(o);
5798         struct osd_thread_info *info;
5799         int                     rc;
5800         int                     cplen = 0;
5801
5802         /* if the module was re-loaded, env can loose its keys */
5803         rc = lu_env_refill((struct lu_env *) env);
5804         if (rc)
5805                 GOTO(out, rc);
5806         info = osd_oti_get(env);
5807         LASSERT(info);
5808
5809         l->ld_ops = &osd_lu_ops;
5810         o->od_dt_dev.dd_ops = &osd_dt_ops;
5811
5812         spin_lock_init(&o->od_osfs_lock);
5813         mutex_init(&o->od_otable_mutex);
5814
5815         o->od_capa_hash = init_capa_hash();
5816         if (o->od_capa_hash == NULL)
5817                 GOTO(out, rc = -ENOMEM);
5818
5819         o->od_read_cache = 1;
5820         o->od_writethrough_cache = 1;
5821         o->od_readcache_max_filesize = OSD_MAX_CACHE_SIZE;
5822
5823         cplen = strlcpy(o->od_svname, lustre_cfg_string(cfg, 4),
5824                         sizeof(o->od_svname));
5825         if (cplen >= sizeof(o->od_svname)) {
5826                 rc = -E2BIG;
5827                 GOTO(out_capa, rc);
5828         }
5829
5830         if (server_name_is_ost(o->od_svname))
5831                 o->od_is_ost = 1;
5832
5833         rc = osd_mount(env, o, cfg);
5834         if (rc != 0)
5835                 GOTO(out_capa, rc);
5836
5837         rc = osd_obj_map_init(env, o);
5838         if (rc != 0)
5839                 GOTO(out_mnt, rc);
5840
5841         rc = lu_site_init(&o->od_site, l);
5842         if (rc != 0)
5843                 GOTO(out_compat, rc);
5844         o->od_site.ls_bottom_dev = l;
5845
5846         rc = lu_site_init_finish(&o->od_site);
5847         if (rc != 0)
5848                 GOTO(out_site, rc);
5849
5850         /* self-repair LMA by default */
5851         o->od_lma_self_repair = 1;
5852
5853         CFS_INIT_LIST_HEAD(&o->od_ios_list);
5854         /* setup scrub, including OI files initialization */
5855         rc = osd_scrub_setup(env, o);
5856         if (rc < 0)
5857                 GOTO(out_site, rc);
5858
5859         rc = osd_procfs_init(o, o->od_svname);
5860         if (rc != 0) {
5861                 CERROR("%s: can't initialize procfs: rc = %d\n",
5862                        o->od_svname, rc);
5863                 GOTO(out_scrub, rc);
5864         }
5865
5866         LASSERT(l->ld_site->ls_linkage.next && l->ld_site->ls_linkage.prev);
5867
5868         /* initialize quota slave instance */
5869         o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
5870                                      o->od_proc_entry);
5871         if (IS_ERR(o->od_quota_slave)) {
5872                 rc = PTR_ERR(o->od_quota_slave);
5873                 o->od_quota_slave = NULL;
5874                 GOTO(out_procfs, rc);
5875         }
5876
5877         RETURN(0);
5878
5879 out_procfs:
5880         osd_procfs_fini(o);
5881 out_scrub:
5882         osd_scrub_cleanup(env, o);
5883 out_site:
5884         lu_site_fini(&o->od_site);
5885 out_compat:
5886         osd_obj_map_fini(o);
5887 out_mnt:
5888         osd_umount(env, o);
5889 out_capa:
5890         cleanup_capa_hash(o->od_capa_hash);
5891 out:
5892         return rc;
5893 }
5894
5895 static struct lu_device *osd_device_alloc(const struct lu_env *env,
5896                                           struct lu_device_type *t,
5897                                           struct lustre_cfg *cfg)
5898 {
5899         struct osd_device *o;
5900         int                rc;
5901
5902         OBD_ALLOC_PTR(o);
5903         if (o == NULL)
5904                 return ERR_PTR(-ENOMEM);
5905
5906         rc = dt_device_init(&o->od_dt_dev, t);
5907         if (rc == 0) {
5908                 /* Because the ctx might be revived in dt_device_init,
5909                  * refill the env here */
5910                 lu_env_refill((struct lu_env *)env);
5911                 rc = osd_device_init0(env, o, cfg);
5912                 if (rc)
5913                         dt_device_fini(&o->od_dt_dev);
5914         }
5915
5916         if (unlikely(rc != 0))
5917                 OBD_FREE_PTR(o);
5918
5919         return rc == 0 ? osd2lu_dev(o) : ERR_PTR(rc);
5920 }
5921
5922 static struct lu_device *osd_device_free(const struct lu_env *env,
5923                                          struct lu_device *d)
5924 {
5925         struct osd_device *o = osd_dev(d);
5926         ENTRY;
5927
5928         cleanup_capa_hash(o->od_capa_hash);
5929         /* XXX: make osd top device in order to release reference */
5930         d->ld_site->ls_top_dev = d;
5931         lu_site_purge(env, d->ld_site, -1);
5932         if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
5933                 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
5934                 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
5935         }
5936         lu_site_fini(&o->od_site);
5937         dt_device_fini(&o->od_dt_dev);
5938         OBD_FREE_PTR(o);
5939         RETURN(NULL);
5940 }
5941
5942 static int osd_process_config(const struct lu_env *env,
5943                               struct lu_device *d, struct lustre_cfg *cfg)
5944 {
5945         struct osd_device               *o = osd_dev(d);
5946         int                             rc;
5947         ENTRY;
5948
5949         switch (cfg->lcfg_command) {
5950         case LCFG_SETUP:
5951                 rc = osd_mount(env, o, cfg);
5952                 break;
5953         case LCFG_CLEANUP:
5954                 lu_dev_del_linkage(d->ld_site, d);
5955                 rc = osd_shutdown(env, o);
5956                 break;
5957         case LCFG_PARAM:
5958                 LASSERT(&o->od_dt_dev);
5959                 rc = class_process_proc_seq_param(PARAM_OSD,
5960                                                   lprocfs_osd_obd_vars,
5961                                                   cfg, &o->od_dt_dev);
5962                 if (rc > 0 || rc == -ENOSYS)
5963                         rc = class_process_proc_seq_param(PARAM_OST,
5964                                                           lprocfs_osd_obd_vars,
5965                                                           cfg, &o->od_dt_dev);
5966                 break;
5967         default:
5968                 rc = -ENOSYS;
5969         }
5970
5971         RETURN(rc);
5972 }
5973
5974 static int osd_recovery_complete(const struct lu_env *env,
5975                                  struct lu_device *d)
5976 {
5977         struct osd_device       *osd = osd_dev(d);
5978         int                      rc = 0;
5979         ENTRY;
5980
5981         if (osd->od_quota_slave == NULL)
5982                 RETURN(0);
5983
5984         /* start qsd instance on recovery completion, this notifies the quota
5985          * slave code that we are about to process new requests now */
5986         rc = qsd_start(env, osd->od_quota_slave);
5987         RETURN(rc);
5988 }
5989
5990 /*
5991  * we use exports to track all osd users
5992  */
5993 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
5994                            struct obd_device *obd, struct obd_uuid *cluuid,
5995                            struct obd_connect_data *data, void *localdata)
5996 {
5997         struct osd_device    *osd = osd_dev(obd->obd_lu_dev);
5998         struct lustre_handle  conn;
5999         int                   rc;
6000         ENTRY;
6001
6002         CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
6003
6004         rc = class_connect(&conn, obd, cluuid);
6005         if (rc)
6006                 RETURN(rc);
6007
6008         *exp = class_conn2export(&conn);
6009
6010         spin_lock(&osd->od_osfs_lock);
6011         osd->od_connects++;
6012         spin_unlock(&osd->od_osfs_lock);
6013
6014         RETURN(0);
6015 }
6016
6017 /*
6018  * once last export (we don't count self-export) disappeared
6019  * osd can be released
6020  */
6021 static int osd_obd_disconnect(struct obd_export *exp)
6022 {
6023         struct obd_device *obd = exp->exp_obd;
6024         struct osd_device *osd = osd_dev(obd->obd_lu_dev);
6025         int                rc, release = 0;
6026         ENTRY;
6027
6028         /* Only disconnect the underlying layers on the final disconnect. */
6029         spin_lock(&osd->od_osfs_lock);
6030         osd->od_connects--;
6031         if (osd->od_connects == 0)
6032                 release = 1;
6033         spin_unlock(&osd->od_osfs_lock);
6034
6035         rc = class_disconnect(exp); /* bz 9811 */
6036
6037         if (rc == 0 && release)
6038                 class_manual_cleanup(obd);
6039         RETURN(rc);
6040 }
6041
6042 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
6043                        struct lu_device *dev)
6044 {
6045         struct osd_device *osd = osd_dev(dev);
6046         int                result = 0;
6047         ENTRY;
6048
6049         if (osd->od_quota_slave != NULL) {
6050                 /* set up quota slave objects */
6051                 result = qsd_prepare(env, osd->od_quota_slave);
6052                 if (result != 0)
6053                         RETURN(result);
6054         }
6055
6056         result = osd_fid_init(env, osd);
6057
6058         RETURN(result);
6059 }
6060
6061 int osd_fid_alloc(const struct lu_env *env, struct obd_export *exp,
6062                   struct lu_fid *fid, struct md_op_data *op_data)
6063 {
6064         struct osd_device *osd = osd_dev(exp->exp_obd->obd_lu_dev);
6065
6066         return seq_client_alloc_fid(env, osd->od_cl_seq, fid);
6067 }
6068
6069 static const struct lu_object_operations osd_lu_obj_ops = {
6070         .loo_object_init      = osd_object_init,
6071         .loo_object_delete    = osd_object_delete,
6072         .loo_object_release   = osd_object_release,
6073         .loo_object_free      = osd_object_free,
6074         .loo_object_print     = osd_object_print,
6075         .loo_object_invariant = osd_object_invariant
6076 };
6077
6078 const struct lu_device_operations osd_lu_ops = {
6079         .ldo_object_alloc      = osd_object_alloc,
6080         .ldo_process_config    = osd_process_config,
6081         .ldo_recovery_complete = osd_recovery_complete,
6082         .ldo_prepare           = osd_prepare,
6083 };
6084
6085 static const struct lu_device_type_operations osd_device_type_ops = {
6086         .ldto_init = osd_type_init,
6087         .ldto_fini = osd_type_fini,
6088
6089         .ldto_start = osd_type_start,
6090         .ldto_stop  = osd_type_stop,
6091
6092         .ldto_device_alloc = osd_device_alloc,
6093         .ldto_device_free  = osd_device_free,
6094
6095         .ldto_device_init    = osd_device_init,
6096         .ldto_device_fini    = osd_device_fini
6097 };
6098
6099 struct lu_device_type osd_device_type = {
6100         .ldt_tags     = LU_DEVICE_DT,
6101         .ldt_name     = LUSTRE_OSD_LDISKFS_NAME,
6102         .ldt_ops      = &osd_device_type_ops,
6103         .ldt_ctx_tags = LCT_LOCAL,
6104 };
6105
6106 /*
6107  * lprocfs legacy support.
6108  */
6109 static struct obd_ops osd_obd_device_ops = {
6110         .o_owner = THIS_MODULE,
6111         .o_connect      = osd_obd_connect,
6112         .o_disconnect   = osd_obd_disconnect,
6113         .o_fid_alloc    = osd_fid_alloc,
6114 };
6115
6116 static int __init osd_mod_init(void)
6117 {
6118         int rc;
6119
6120         osd_oi_mod_init();
6121
6122         rc = lu_kmem_init(ldiskfs_caches);
6123         if (rc)
6124                 return rc;
6125
6126         rc = class_register_type(&osd_obd_device_ops, NULL, true,
6127                                  lprocfs_osd_module_vars,
6128 #ifndef HAVE_ONLY_PROCFS_SEQ
6129                                  NULL,
6130 #endif
6131                                  LUSTRE_OSD_LDISKFS_NAME, &osd_device_type);
6132         if (rc)
6133                 lu_kmem_fini(ldiskfs_caches);
6134         return rc;
6135 }
6136
6137 static void __exit osd_mod_exit(void)
6138 {
6139         class_unregister_type(LUSTRE_OSD_LDISKFS_NAME);
6140         lu_kmem_fini(ldiskfs_caches);
6141 }
6142
6143 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6144 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_LDISKFS_NAME")");
6145 MODULE_LICENSE("GPL");
6146
6147 cfs_module(osd, "0.1.0", osd_mod_init, osd_mod_exit);