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 (!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         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                 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                 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         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 = i_uid_read(inode);
1195                 qid_t                    gid = i_gid_read(inode);
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     = i_uid_read(inode);
1704         attr->la_gid     = i_gid_read(inode);
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         qid_t                   uid;
1741         qid_t                   gid;
1742         long long               bspace;
1743         int                     rc = 0;
1744         bool                    allocated;
1745         ENTRY;
1746
1747         LASSERT(dt != NULL);
1748         LASSERT(handle != NULL);
1749
1750         obj = osd_dt_obj(dt);
1751         LASSERT(osd_invariant(obj));
1752
1753         oh = container_of0(handle, struct osd_thandle, ot_super);
1754         LASSERT(oh->ot_handle == NULL);
1755
1756         osd_trans_declare_op(env, oh, OSD_OT_ATTR_SET,
1757                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
1758
1759         if (attr == NULL || obj->oo_inode == NULL)
1760                 RETURN(rc);
1761
1762         bspace   = obj->oo_inode->i_blocks;
1763         bspace <<= obj->oo_inode->i_sb->s_blocksize_bits;
1764         bspace   = toqb(bspace);
1765
1766         /* Changing ownership is always preformed by super user, it should not
1767          * fail with EDQUOT.
1768          *
1769          * We still need to call the osd_declare_qid() to calculate the journal
1770          * credits for updating quota accounting files and to trigger quota
1771          * space adjustment once the operation is completed.*/
1772         if ((attr->la_valid & LA_UID) != 0 &&
1773              attr->la_uid != (uid = i_uid_read(obj->oo_inode))) {
1774                 qi->lqi_type = USRQUOTA;
1775
1776                 /* inode accounting */
1777                 qi->lqi_is_blk = false;
1778
1779                 /* one more inode for the new owner ... */
1780                 qi->lqi_id.qid_uid = attr->la_uid;
1781                 qi->lqi_space      = 1;
1782                 allocated = (attr->la_uid == 0) ? true : false;
1783                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1784                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1785                         rc = 0;
1786                 if (rc)
1787                         RETURN(rc);
1788
1789                 /* and one less inode for the current uid */
1790                 qi->lqi_id.qid_uid = uid;
1791                 qi->lqi_space      = -1;
1792                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1793                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1794                         rc = 0;
1795                 if (rc)
1796                         RETURN(rc);
1797
1798                 /* block accounting */
1799                 qi->lqi_is_blk = true;
1800
1801                 /* more blocks for the new owner ... */
1802                 qi->lqi_id.qid_uid = attr->la_uid;
1803                 qi->lqi_space      = bspace;
1804                 allocated = (attr->la_uid == 0) ? true : false;
1805                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1806                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1807                         rc = 0;
1808                 if (rc)
1809                         RETURN(rc);
1810
1811                 /* and finally less blocks for the current owner */
1812                 qi->lqi_id.qid_uid = uid;
1813                 qi->lqi_space      = -bspace;
1814                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1815                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1816                         rc = 0;
1817                 if (rc)
1818                         RETURN(rc);
1819         }
1820
1821         if (attr->la_valid & LA_GID &&
1822             attr->la_gid != (gid = i_gid_read(obj->oo_inode))) {
1823                 qi->lqi_type = GRPQUOTA;
1824
1825                 /* inode accounting */
1826                 qi->lqi_is_blk = false;
1827
1828                 /* one more inode for the new group owner ... */
1829                 qi->lqi_id.qid_gid = attr->la_gid;
1830                 qi->lqi_space      = 1;
1831                 allocated = (attr->la_gid == 0) ? true : false;
1832                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1833                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1834                         rc = 0;
1835                 if (rc)
1836                         RETURN(rc);
1837
1838                 /* and one less inode for the current gid */
1839                 qi->lqi_id.qid_gid = gid;
1840                 qi->lqi_space      = -1;
1841                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1842                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1843                         rc = 0;
1844                 if (rc)
1845                         RETURN(rc);
1846
1847                 /* block accounting */
1848                 qi->lqi_is_blk = true;
1849
1850                 /* more blocks for the new owner ... */
1851                 qi->lqi_id.qid_gid = attr->la_gid;
1852                 qi->lqi_space      = bspace;
1853                 allocated = (attr->la_gid == 0) ? true : false;
1854                 rc = osd_declare_qid(env, oh, qi, allocated, NULL);
1855                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1856                         rc = 0;
1857                 if (rc)
1858                         RETURN(rc);
1859
1860                 /* and finally less blocks for the current owner */
1861                 qi->lqi_id.qid_gid = gid;
1862                 qi->lqi_space      = -bspace;
1863                 rc = osd_declare_qid(env, oh, qi, true, NULL);
1864                 if (rc == -EDQUOT || rc == -EINPROGRESS)
1865                         rc = 0;
1866                 if (rc)
1867                         RETURN(rc);
1868         }
1869
1870         RETURN(rc);
1871 }
1872
1873 static int osd_inode_setattr(const struct lu_env *env,
1874                              struct inode *inode, const struct lu_attr *attr)
1875 {
1876         __u64 bits;
1877
1878         bits = attr->la_valid;
1879
1880         if (bits & LA_ATIME)
1881                 inode->i_atime  = *osd_inode_time(env, inode, attr->la_atime);
1882         if (bits & LA_CTIME)
1883                 inode->i_ctime  = *osd_inode_time(env, inode, attr->la_ctime);
1884         if (bits & LA_MTIME)
1885                 inode->i_mtime  = *osd_inode_time(env, inode, attr->la_mtime);
1886         if (bits & LA_SIZE) {
1887                 LDISKFS_I(inode)->i_disksize = attr->la_size;
1888                 i_size_write(inode, attr->la_size);
1889         }
1890
1891 #if 0
1892         /* OSD should not change "i_blocks" which is used by quota.
1893          * "i_blocks" should be changed by ldiskfs only. */
1894         if (bits & LA_BLOCKS)
1895                 inode->i_blocks = attr->la_blocks;
1896 #endif
1897         if (bits & LA_MODE)
1898                 inode->i_mode = (inode->i_mode & S_IFMT) |
1899                                 (attr->la_mode & ~S_IFMT);
1900         if (bits & LA_UID)
1901                 i_uid_write(inode, attr->la_uid);
1902         if (bits & LA_GID)
1903                 i_gid_write(inode, attr->la_gid);
1904         if (bits & LA_NLINK)
1905                 set_nlink(inode, attr->la_nlink);
1906         if (bits & LA_RDEV)
1907                 inode->i_rdev = attr->la_rdev;
1908
1909         if (bits & LA_FLAGS) {
1910                 /* always keep S_NOCMTIME */
1911                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
1912                                  S_NOCMTIME;
1913         }
1914         return 0;
1915 }
1916
1917 static int osd_quota_transfer(struct inode *inode, const struct lu_attr *attr)
1918 {
1919         if ((attr->la_valid & LA_UID && attr->la_uid != i_uid_read(inode)) ||
1920             (attr->la_valid & LA_GID && attr->la_gid != i_gid_read(inode))) {
1921                 struct iattr    iattr;
1922                 int             rc;
1923
1924                 iattr.ia_valid = 0;
1925                 if (attr->la_valid & LA_UID)
1926                         iattr.ia_valid |= ATTR_UID;
1927                 if (attr->la_valid & LA_GID)
1928                         iattr.ia_valid |= ATTR_GID;
1929                 iattr.ia_uid = make_kuid(&init_user_ns, attr->la_uid);
1930                 iattr.ia_gid = make_kgid(&init_user_ns, attr->la_gid);
1931
1932                 rc = ll_vfs_dq_transfer(inode, &iattr);
1933                 if (rc) {
1934                         CERROR("%s: quota transfer failed: rc = %d. Is quota "
1935                                "enforcement enabled on the ldiskfs filesystem?",
1936                                inode->i_sb->s_id, rc);
1937                         return rc;
1938                 }
1939         }
1940         return 0;
1941 }
1942
1943 static int osd_attr_set(const struct lu_env *env,
1944                         struct dt_object *dt,
1945                         const struct lu_attr *attr,
1946                         struct thandle *handle,
1947                         struct lustre_capa *capa)
1948 {
1949         struct osd_object *obj = osd_dt_obj(dt);
1950         struct inode      *inode;
1951         int rc;
1952
1953         LASSERT(handle != NULL);
1954         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
1955         LASSERT(osd_invariant(obj));
1956
1957         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1958                 return -EACCES;
1959
1960         osd_trans_exec_op(env, handle, OSD_OT_ATTR_SET);
1961
1962         if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FID_MAPPING)) {
1963                 struct osd_thread_info  *oti  = osd_oti_get(env);
1964                 const struct lu_fid     *fid0 = lu_object_fid(&dt->do_lu);
1965                 struct lu_fid           *fid1 = &oti->oti_fid;
1966                 struct osd_inode_id     *id   = &oti->oti_id;
1967                 struct iam_path_descr   *ipd;
1968                 struct iam_container    *bag;
1969                 struct osd_thandle      *oh;
1970                 int                      rc;
1971
1972                 fid_cpu_to_be(fid1, fid0);
1973                 memset(id, 1, sizeof(*id));
1974                 bag = &osd_fid2oi(osd_dev(dt->do_lu.lo_dev),
1975                                   fid0)->oi_dir.od_container;
1976                 ipd = osd_idx_ipd_get(env, bag);
1977                 if (unlikely(ipd == NULL))
1978                         RETURN(-ENOMEM);
1979
1980                 oh = container_of0(handle, struct osd_thandle, ot_super);
1981                 rc = iam_update(oh->ot_handle, bag, (const struct iam_key *)fid1,
1982                                 (const struct iam_rec *)id, ipd);
1983                 osd_ipd_put(env, bag, ipd);
1984                 return(rc > 0 ? 0 : rc);
1985         }
1986
1987         inode = obj->oo_inode;
1988         ll_vfs_dq_init(inode);
1989
1990         rc = osd_quota_transfer(inode, attr);
1991         if (rc)
1992                 return rc;
1993
1994         spin_lock(&obj->oo_guard);
1995         rc = osd_inode_setattr(env, inode, attr);
1996         spin_unlock(&obj->oo_guard);
1997
1998         if (!rc)
1999                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2000         return rc;
2001 }
2002
2003 struct dentry *osd_child_dentry_get(const struct lu_env *env,
2004                                     struct osd_object *obj,
2005                                     const char *name, const int namelen)
2006 {
2007         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
2008 }
2009
2010 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
2011                       umode_t mode, struct dt_allocation_hint *hint,
2012                       struct thandle *th)
2013 {
2014         int result;
2015         struct osd_device  *osd = osd_obj2dev(obj);
2016         struct osd_thandle *oth;
2017         struct dt_object   *parent = NULL;
2018         struct inode       *inode;
2019
2020         LINVRNT(osd_invariant(obj));
2021         LASSERT(obj->oo_inode == NULL);
2022         LASSERT(obj->oo_hl_head == NULL);
2023
2024         if (S_ISDIR(mode) && ldiskfs_pdo) {
2025                 obj->oo_hl_head =ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
2026                 if (obj->oo_hl_head == NULL)
2027                         return -ENOMEM;
2028         }
2029
2030         oth = container_of(th, struct osd_thandle, ot_super);
2031         LASSERT(oth->ot_handle->h_transaction != NULL);
2032
2033         if (hint && hint->dah_parent)
2034                 parent = hint->dah_parent;
2035
2036         inode = ldiskfs_create_inode(oth->ot_handle,
2037                                      parent ? osd_dt_obj(parent)->oo_inode :
2038                                               osd_sb(osd)->s_root->d_inode,
2039                                      mode);
2040         if (!IS_ERR(inode)) {
2041                 /* Do not update file c/mtime in ldiskfs.
2042                  * NB: don't need any lock because no contention at this
2043                  * early stage */
2044                 inode->i_flags |= S_NOCMTIME;
2045
2046                 /* For new created object, it must be consistent,
2047                  * and it is unnecessary to scrub against it. */
2048                 ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
2049                 obj->oo_inode = inode;
2050                 result = 0;
2051         } else {
2052                 if (obj->oo_hl_head != NULL) {
2053                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
2054                         obj->oo_hl_head = NULL;
2055                 }
2056                 result = PTR_ERR(inode);
2057         }
2058         LINVRNT(osd_invariant(obj));
2059         return result;
2060 }
2061
2062 enum {
2063         OSD_NAME_LEN = 255
2064 };
2065
2066 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
2067                      struct lu_attr *attr,
2068                      struct dt_allocation_hint *hint,
2069                      struct dt_object_format *dof,
2070                      struct thandle *th)
2071 {
2072         int result;
2073         struct osd_thandle *oth;
2074         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
2075
2076         LASSERT(S_ISDIR(attr->la_mode));
2077
2078         oth = container_of(th, struct osd_thandle, ot_super);
2079         LASSERT(oth->ot_handle->h_transaction != NULL);
2080         result = osd_mkfile(info, obj, mode, hint, th);
2081
2082         return result;
2083 }
2084
2085 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
2086                         struct lu_attr *attr,
2087                         struct dt_allocation_hint *hint,
2088                         struct dt_object_format *dof,
2089                         struct thandle *th)
2090 {
2091         int result;
2092         struct osd_thandle *oth;
2093         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
2094
2095         __u32 mode = (attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX));
2096
2097         LASSERT(S_ISREG(attr->la_mode));
2098
2099         oth = container_of(th, struct osd_thandle, ot_super);
2100         LASSERT(oth->ot_handle->h_transaction != NULL);
2101
2102         result = osd_mkfile(info, obj, mode, hint, th);
2103         if (result == 0) {
2104                 LASSERT(obj->oo_inode != NULL);
2105                 if (feat->dif_flags & DT_IND_VARKEY)
2106                         result = iam_lvar_create(obj->oo_inode,
2107                                                  feat->dif_keysize_max,
2108                                                  feat->dif_ptrsize,
2109                                                  feat->dif_recsize_max,
2110                                                  oth->ot_handle);
2111                 else
2112                         result = iam_lfix_create(obj->oo_inode,
2113                                                  feat->dif_keysize_max,
2114                                                  feat->dif_ptrsize,
2115                                                  feat->dif_recsize_max,
2116                                                  oth->ot_handle);
2117
2118         }
2119         return result;
2120 }
2121
2122 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
2123                      struct lu_attr *attr,
2124                      struct dt_allocation_hint *hint,
2125                      struct dt_object_format *dof,
2126                      struct thandle *th)
2127 {
2128         LASSERT(S_ISREG(attr->la_mode));
2129         return osd_mkfile(info, obj, (attr->la_mode &
2130                                (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
2131 }
2132
2133 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
2134                      struct lu_attr *attr,
2135                      struct dt_allocation_hint *hint,
2136                      struct dt_object_format *dof,
2137                      struct thandle *th)
2138 {
2139         LASSERT(S_ISLNK(attr->la_mode));
2140         return osd_mkfile(info, obj, (attr->la_mode &
2141                               (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
2142 }
2143
2144 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
2145                      struct lu_attr *attr,
2146                      struct dt_allocation_hint *hint,
2147                      struct dt_object_format *dof,
2148                      struct thandle *th)
2149 {
2150         umode_t mode = attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX);
2151         int result;
2152
2153         LINVRNT(osd_invariant(obj));
2154         LASSERT(obj->oo_inode == NULL);
2155         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
2156                 S_ISFIFO(mode) || S_ISSOCK(mode));
2157
2158         result = osd_mkfile(info, obj, mode, hint, th);
2159         if (result == 0) {
2160                 LASSERT(obj->oo_inode != NULL);
2161                 /*
2162                  * This inode should be marked dirty for i_rdev.  Currently
2163                  * that is done in the osd_attr_init().
2164                  */
2165                 init_special_inode(obj->oo_inode, obj->oo_inode->i_mode,
2166                                    attr->la_rdev);
2167         }
2168         LINVRNT(osd_invariant(obj));
2169         return result;
2170 }
2171
2172 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
2173                               struct lu_attr *,
2174                               struct dt_allocation_hint *hint,
2175                               struct dt_object_format *dof,
2176                               struct thandle *);
2177
2178 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
2179 {
2180         osd_obj_type_f result;
2181
2182         switch (type) {
2183         case DFT_DIR:
2184                 result = osd_mkdir;
2185                 break;
2186         case DFT_REGULAR:
2187                 result = osd_mkreg;
2188                 break;
2189         case DFT_SYM:
2190                 result = osd_mksym;
2191                 break;
2192         case DFT_NODE:
2193                 result = osd_mknod;
2194                 break;
2195         case DFT_INDEX:
2196                 result = osd_mk_index;
2197                 break;
2198
2199         default:
2200                 LBUG();
2201                 break;
2202         }
2203         return result;
2204 }
2205
2206
2207 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
2208                         struct dt_object *parent, struct dt_object *child,
2209                         umode_t child_mode)
2210 {
2211         LASSERT(ah);
2212
2213         ah->dah_parent = parent;
2214         ah->dah_mode = child_mode;
2215 }
2216
2217 static void osd_attr_init(struct osd_thread_info *info, struct osd_object *obj,
2218                           struct lu_attr *attr, struct dt_object_format *dof)
2219 {
2220         struct inode   *inode = obj->oo_inode;
2221         __u64           valid = attr->la_valid;
2222         int             result;
2223
2224         attr->la_valid &= ~(LA_TYPE | LA_MODE);
2225
2226         if (dof->dof_type != DFT_NODE)
2227                 attr->la_valid &= ~LA_RDEV;
2228         if ((valid & LA_ATIME) && (attr->la_atime == LTIME_S(inode->i_atime)))
2229                 attr->la_valid &= ~LA_ATIME;
2230         if ((valid & LA_CTIME) && (attr->la_ctime == LTIME_S(inode->i_ctime)))
2231                 attr->la_valid &= ~LA_CTIME;
2232         if ((valid & LA_MTIME) && (attr->la_mtime == LTIME_S(inode->i_mtime)))
2233                 attr->la_valid &= ~LA_MTIME;
2234
2235         result = osd_quota_transfer(inode, attr);
2236         if (result)
2237                 return;
2238
2239         if (attr->la_valid != 0) {
2240                 result = osd_inode_setattr(info->oti_env, inode, attr);
2241                 /*
2242                  * The osd_inode_setattr() should always succeed here.  The
2243                  * only error that could be returned is EDQUOT when we are
2244                  * trying to change the UID or GID of the inode. However, this
2245                  * should not happen since quota enforcement is no longer
2246                  * enabled on ldiskfs (lquota takes care of it).
2247                  */
2248                 LASSERTF(result == 0, "%d", result);
2249                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2250         }
2251
2252         attr->la_valid = valid;
2253 }
2254
2255 /**
2256  * Helper function for osd_object_create()
2257  *
2258  * \retval 0, on success
2259  */
2260 static int __osd_object_create(struct osd_thread_info *info,
2261                                struct osd_object *obj, struct lu_attr *attr,
2262                                struct dt_allocation_hint *hint,
2263                                struct dt_object_format *dof,
2264                                struct thandle *th)
2265 {
2266         int     result;
2267         __u32   umask;
2268
2269         /* we drop umask so that permissions we pass are not affected */
2270         umask = current->fs->umask;
2271         current->fs->umask = 0;
2272
2273         result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof,
2274                                                   th);
2275         if (result == 0) {
2276                 osd_attr_init(info, obj, attr, dof);
2277                 osd_object_init0(obj);
2278                 /* bz 24037 */
2279                 if (obj->oo_inode && (obj->oo_inode->i_state & I_NEW))
2280                         unlock_new_inode(obj->oo_inode);
2281         }
2282
2283         /* restore previous umask value */
2284         current->fs->umask = umask;
2285
2286         return result;
2287 }
2288
2289 /**
2290  * Helper function for osd_object_create()
2291  *
2292  * \retval 0, on success
2293  */
2294 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
2295                            const struct lu_fid *fid, struct thandle *th)
2296 {
2297         struct osd_thread_info *info = osd_oti_get(env);
2298         struct osd_inode_id    *id   = &info->oti_id;
2299         struct osd_device      *osd  = osd_obj2dev(obj);
2300         struct osd_thandle     *oh;
2301
2302         LASSERT(obj->oo_inode != NULL);
2303
2304         oh = container_of0(th, struct osd_thandle, ot_super);
2305         LASSERT(oh->ot_handle);
2306
2307         osd_id_gen(id, obj->oo_inode->i_ino, obj->oo_inode->i_generation);
2308         return osd_oi_insert(info, osd, fid, id, oh->ot_handle, OI_CHECK_FLD);
2309 }
2310
2311 int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
2312                    obd_seq seq, struct lu_seq_range *range)
2313 {
2314         struct seq_server_site  *ss = osd_seq_site(osd);
2315
2316         if (fid_seq_is_idif(seq)) {
2317                 fld_range_set_ost(range);
2318                 range->lsr_index = idif_ost_idx(seq);
2319                 return 0;
2320         }
2321
2322         if (!fid_seq_in_fldb(seq)) {
2323                 fld_range_set_mdt(range);
2324                 if (ss != NULL)
2325                         /* FIXME: If ss is NULL, it suppose not get lsr_index
2326                          * at all */
2327                         range->lsr_index = ss->ss_node_id;
2328                 return 0;
2329         }
2330
2331         LASSERT(ss != NULL);
2332         fld_range_set_any(range);
2333         /* OSD will only do local fld lookup */
2334         return fld_local_lookup(env, ss->ss_server_fld, seq, range);
2335 }
2336
2337 /*
2338  * Concurrency: no external locking is necessary.
2339  */
2340 static int osd_declare_object_create(const struct lu_env *env,
2341                                      struct dt_object *dt,
2342                                      struct lu_attr *attr,
2343                                      struct dt_allocation_hint *hint,
2344                                      struct dt_object_format *dof,
2345                                      struct thandle *handle)
2346 {
2347         struct osd_thandle      *oh;
2348         int                      rc;
2349         ENTRY;
2350
2351         LASSERT(handle != NULL);
2352
2353         oh = container_of0(handle, struct osd_thandle, ot_super);
2354         LASSERT(oh->ot_handle == NULL);
2355
2356         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
2357                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
2358         /* Reuse idle OI block may cause additional one OI block
2359          * to be changed. */
2360         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2361                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
2362
2363         /* If this is directory, then we expect . and .. to be inserted as
2364          * well. The one directory block always needs to be created for the
2365          * directory, so we could use DTO_WRITE_BASE here (GDT, block bitmap,
2366          * block), there is no danger of needing a tree for the first block.
2367          */
2368         if (attr && S_ISDIR(attr->la_mode)) {
2369                 osd_trans_declare_op(env, oh, OSD_OT_INSERT,
2370                                      osd_dto_credits_noquota[DTO_WRITE_BASE]);
2371                 osd_trans_declare_op(env, oh, OSD_OT_INSERT, 0);
2372         }
2373
2374         if (!attr)
2375                 RETURN(0);
2376
2377         rc = osd_declare_inode_qid(env, attr->la_uid, attr->la_gid, 1, oh,
2378                                    false, false, NULL, false);
2379         if (rc != 0)
2380                 RETURN(rc);
2381
2382         RETURN(rc);
2383 }
2384
2385 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
2386                              struct lu_attr *attr,
2387                              struct dt_allocation_hint *hint,
2388                              struct dt_object_format *dof,
2389                              struct thandle *th)
2390 {
2391         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2392         struct osd_object      *obj    = osd_dt_obj(dt);
2393         struct osd_thread_info *info   = osd_oti_get(env);
2394         int result;
2395
2396         ENTRY;
2397
2398         LINVRNT(osd_invariant(obj));
2399         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2400         LASSERT(osd_write_locked(env, obj));
2401         LASSERT(th != NULL);
2402
2403         if (unlikely(fid_is_acct(fid)))
2404                 /* Quota files can't be created from the kernel any more,
2405                  * 'tune2fs -O quota' will take care of creating them */
2406                 RETURN(-EPERM);
2407
2408         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2409         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2410
2411         result = __osd_object_create(info, obj, attr, hint, dof, th);
2412         if (result == 0)
2413                 result = __osd_oi_insert(env, obj, fid, th);
2414
2415         LASSERT(ergo(result == 0,
2416                      dt_object_exists(dt) && !dt_object_remote(dt)));
2417
2418         LASSERT(osd_invariant(obj));
2419         RETURN(result);
2420 }
2421
2422 /**
2423  * Called to destroy on-disk representation of the object
2424  *
2425  * Concurrency: must be locked
2426  */
2427 static int osd_declare_object_destroy(const struct lu_env *env,
2428                                       struct dt_object *dt,
2429                                       struct thandle *th)
2430 {
2431         struct osd_object  *obj = osd_dt_obj(dt);
2432         struct inode       *inode = obj->oo_inode;
2433         struct osd_thandle *oh;
2434         int                 rc;
2435         ENTRY;
2436
2437         oh = container_of0(th, struct osd_thandle, ot_super);
2438         LASSERT(oh->ot_handle == NULL);
2439         LASSERT(inode);
2440
2441         osd_trans_declare_op(env, oh, OSD_OT_DESTROY,
2442                              osd_dto_credits_noquota[DTO_OBJECT_DELETE]);
2443         /* Recycle idle OI leaf may cause additional three OI blocks
2444          * to be changed. */
2445         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
2446                              osd_dto_credits_noquota[DTO_INDEX_DELETE] + 3);
2447         /* one less inode */
2448         rc = osd_declare_inode_qid(env, i_uid_read(inode), i_gid_read(inode),
2449                                    -1, oh, false, true, NULL, false);
2450         if (rc)
2451                 RETURN(rc);
2452         /* data to be truncated */
2453         rc = osd_declare_inode_qid(env, i_uid_read(inode), i_gid_read(inode),
2454                                    0, oh, true, true, NULL, false);
2455         RETURN(rc);
2456 }
2457
2458 static int osd_object_destroy(const struct lu_env *env,
2459                               struct dt_object *dt,
2460                               struct thandle *th)
2461 {
2462         const struct lu_fid    *fid = lu_object_fid(&dt->do_lu);
2463         struct osd_object      *obj = osd_dt_obj(dt);
2464         struct inode           *inode = obj->oo_inode;
2465         struct osd_device      *osd = osd_obj2dev(obj);
2466         struct osd_thandle     *oh;
2467         int                     result;
2468         ENTRY;
2469
2470         oh = container_of0(th, struct osd_thandle, ot_super);
2471         LASSERT(oh->ot_handle);
2472         LASSERT(inode);
2473         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
2474
2475         if (unlikely(fid_is_acct(fid)))
2476                 RETURN(-EPERM);
2477
2478         if (S_ISDIR(inode->i_mode)) {
2479                 LASSERT(osd_inode_unlinked(inode) || inode->i_nlink == 1 ||
2480                         inode->i_nlink == 2);
2481                 /* it will check/delete the inode from remote parent,
2482                  * how to optimize it? unlink performance impaction XXX */
2483                 result = osd_delete_from_remote_parent(env, osd, obj, oh);
2484                 if (result != 0 && result != -ENOENT) {
2485                         CERROR("%s: delete inode "DFID": rc = %d\n",
2486                                osd_name(osd), PFID(fid), result);
2487                 }
2488                 spin_lock(&obj->oo_guard);
2489                 clear_nlink(inode);
2490                 spin_unlock(&obj->oo_guard);
2491                 ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2492         }
2493
2494         osd_trans_exec_op(env, th, OSD_OT_DESTROY);
2495
2496         result = osd_oi_delete(osd_oti_get(env), osd, fid, oh->ot_handle,
2497                                OI_CHECK_FLD);
2498
2499         /* XXX: add to ext3 orphan list */
2500         /* rc = ext3_orphan_add(handle_t *handle, struct inode *inode) */
2501
2502         /* not needed in the cache anymore */
2503         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
2504
2505         RETURN(0);
2506 }
2507
2508 /**
2509  * Put the fid into lustre_mdt_attrs, and then place the structure
2510  * inode's ea. This fid should not be altered during the life time
2511  * of the inode.
2512  *
2513  * \retval +ve, on success
2514  * \retval -ve, on error
2515  *
2516  * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
2517  */
2518 int osd_ea_fid_set(struct osd_thread_info *info, struct inode *inode,
2519                    const struct lu_fid *fid, __u32 compat, __u32 incompat)
2520 {
2521         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
2522         int                      rc;
2523         ENTRY;
2524
2525         if (OBD_FAIL_CHECK(OBD_FAIL_FID_INLMA))
2526                 RETURN(0);
2527
2528         lustre_lma_init(lma, fid, compat, incompat);
2529         lustre_lma_swab(lma);
2530
2531         rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma, sizeof(*lma),
2532                              XATTR_CREATE);
2533         /* LMA may already exist, but we need to check that all the
2534          * desired compat/incompat flags have been added. */
2535         if (unlikely(rc == -EEXIST)) {
2536                 if (compat == 0 && incompat == 0)
2537                         RETURN(0);
2538
2539                 rc = __osd_xattr_get(inode, &info->oti_obj_dentry,
2540                                      XATTR_NAME_LMA, info->oti_mdt_attrs_old,
2541                                      LMA_OLD_SIZE);
2542                 if (rc <= 0)
2543                         RETURN(-EINVAL);
2544
2545                 lustre_lma_swab(lma);
2546                 if (!(~lma->lma_compat & compat) &&
2547                     !(~lma->lma_incompat & incompat))
2548                         RETURN(0);
2549
2550                 lma->lma_compat |= compat;
2551                 lma->lma_incompat |= incompat;
2552                 lustre_lma_swab(lma);
2553                 rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma,
2554                                      sizeof(*lma), XATTR_REPLACE);
2555         }
2556
2557         RETURN(rc);
2558 }
2559
2560 /**
2561  * ldiskfs supports fid in dirent, it is passed in dentry->d_fsdata.
2562  * lustre 1.8 also uses d_fsdata for passing other info to ldiskfs.
2563  * To have compatilibility with 1.8 ldiskfs driver we need to have
2564  * magic number at start of fid data.
2565  * \ldiskfs_dentry_param is used only to pass fid from osd to ldiskfs.
2566  * its inmemory API.
2567  */
2568 void osd_get_ldiskfs_dirent_param(struct ldiskfs_dentry_param *param,
2569                                   const struct dt_rec *fid)
2570 {
2571         if (!fid_is_namespace_visible((const struct lu_fid *)fid) ||
2572             OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF)) {
2573                 param->edp_magic = 0;
2574                 return;
2575         }
2576
2577         param->edp_magic = LDISKFS_LUFID_MAGIC;
2578         param->edp_len =  sizeof(struct lu_fid) + 1;
2579         fid_cpu_to_be((struct lu_fid *)param->edp_data, (struct lu_fid *)fid);
2580 }
2581
2582 /**
2583  * Try to read the fid from inode ea into dt_rec.
2584  *
2585  * \param fid object fid.
2586  *
2587  * \retval 0 on success
2588  */
2589 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
2590                           __u32 ino, struct lu_fid *fid,
2591                           struct osd_inode_id *id)
2592 {
2593         struct osd_thread_info *info  = osd_oti_get(env);
2594         struct inode           *inode;
2595         ENTRY;
2596
2597         osd_id_gen(id, ino, OSD_OII_NOGEN);
2598         inode = osd_iget_fid(info, osd_obj2dev(obj), id, fid);
2599         if (IS_ERR(inode))
2600                 RETURN(PTR_ERR(inode));
2601
2602         iput(inode);
2603         RETURN(0);
2604 }
2605
2606 static int osd_add_dot_dotdot_internal(struct osd_thread_info *info,
2607                                         struct inode *dir,
2608                                         struct inode  *parent_dir,
2609                                         const struct dt_rec *dot_fid,
2610                                         const struct dt_rec *dot_dot_fid,
2611                                         struct osd_thandle *oth)
2612 {
2613         struct ldiskfs_dentry_param *dot_ldp;
2614         struct ldiskfs_dentry_param *dot_dot_ldp;
2615
2616         dot_dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp2;
2617         osd_get_ldiskfs_dirent_param(dot_dot_ldp, dot_dot_fid);
2618
2619         dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
2620         dot_ldp->edp_magic = 0;
2621         return ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir,
2622                                         dir, dot_ldp, dot_dot_ldp);
2623 }
2624
2625 /**
2626  * Create an local agent inode for remote entry
2627  */
2628 static struct inode *osd_create_local_agent_inode(const struct lu_env *env,
2629                                                   struct osd_device *osd,
2630                                                   struct osd_object *pobj,
2631                                                   const struct lu_fid *fid,
2632                                                   struct thandle *th)
2633 {
2634         struct osd_thread_info  *info = osd_oti_get(env);
2635         struct inode            *local;
2636         struct osd_thandle      *oh;
2637         int                     rc;
2638         ENTRY;
2639
2640         LASSERT(th);
2641         oh = container_of(th, struct osd_thandle, ot_super);
2642         LASSERT(oh->ot_handle->h_transaction != NULL);
2643
2644         /* FIXME: Insert index api needs to know the mode of
2645          * the remote object. Just use S_IFDIR for now */
2646         local = ldiskfs_create_inode(oh->ot_handle, pobj->oo_inode, S_IFDIR);
2647         if (IS_ERR(local)) {
2648                 CERROR("%s: create local error %d\n", osd_name(osd),
2649                        (int)PTR_ERR(local));
2650                 RETURN(local);
2651         }
2652
2653         /* Set special LMA flag for local agent inode */
2654         rc = osd_ea_fid_set(info, local, fid, 0, LMAI_AGENT);
2655         if (rc != 0) {
2656                 CERROR("%s: set LMA for "DFID" remote inode failed: rc = %d\n",
2657                        osd_name(osd), PFID(fid), rc);
2658                 RETURN(ERR_PTR(rc));
2659         }
2660
2661         rc = osd_add_dot_dotdot_internal(info, local, pobj->oo_inode,
2662                 (const struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
2663                 (const struct dt_rec *)fid, oh);
2664         if (rc != 0) {
2665                 CERROR("%s: "DFID" add dot dotdot error: rc = %d\n",
2666                         osd_name(osd), PFID(fid), rc);
2667                 RETURN(ERR_PTR(rc));
2668         }
2669
2670         RETURN(local);
2671 }
2672
2673 /**
2674  * Delete local agent inode for remote entry
2675  */
2676 static int osd_delete_local_agent_inode(const struct lu_env *env,
2677                                         struct osd_device *osd,
2678                                         const struct lu_fid *fid,
2679                                         __u32 ino, struct osd_thandle *oh)
2680 {
2681         struct osd_thread_info  *oti = osd_oti_get(env);
2682         struct osd_inode_id     *id = &oti->oti_id;
2683         struct inode            *inode;
2684         ENTRY;
2685
2686         id->oii_ino = le32_to_cpu(ino);
2687         id->oii_gen = OSD_OII_NOGEN;
2688         inode = osd_iget(oti, osd, id);
2689         if (IS_ERR(inode)) {
2690                 CERROR("%s: iget error "DFID" id %u:%u\n", osd_name(osd),
2691                        PFID(fid), id->oii_ino, id->oii_gen);
2692                 RETURN(PTR_ERR(inode));
2693         }
2694
2695         clear_nlink(inode);
2696         mark_inode_dirty(inode);
2697         CDEBUG(D_INODE, "%s: delete remote inode "DFID" %lu\n",
2698                 osd_name(osd), PFID(fid), inode->i_ino);
2699         iput(inode);
2700         RETURN(0);
2701 }
2702
2703 /**
2704  * OSD layer object create function for interoperability mode (b11826).
2705  * This is mostly similar to osd_object_create(). Only difference being, fid is
2706  * inserted into inode ea here.
2707  *
2708  * \retval   0, on success
2709  * \retval -ve, on error
2710  */
2711 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
2712                                 struct lu_attr *attr,
2713                                 struct dt_allocation_hint *hint,
2714                                 struct dt_object_format *dof,
2715                                 struct thandle *th)
2716 {
2717         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2718         struct osd_object      *obj    = osd_dt_obj(dt);
2719         struct osd_thread_info *info   = osd_oti_get(env);
2720         int                     result;
2721
2722         ENTRY;
2723
2724         LASSERT(osd_invariant(obj));
2725         LASSERT(!dt_object_exists(dt) && !dt_object_remote(dt));
2726         LASSERT(osd_write_locked(env, obj));
2727         LASSERT(th != NULL);
2728
2729         if (unlikely(fid_is_acct(fid)))
2730                 /* Quota files can't be created from the kernel any more,
2731                  * 'tune2fs -O quota' will take care of creating them */
2732                 RETURN(-EPERM);
2733
2734         osd_trans_exec_op(env, th, OSD_OT_CREATE);
2735         osd_trans_declare_rb(env, th, OSD_OT_REF_ADD);
2736
2737         result = __osd_object_create(info, obj, attr, hint, dof, th);
2738         if (result == 0)
2739                 result = osd_ea_fid_set(info, obj->oo_inode, fid,
2740                                 fid_is_on_ost(info, osd_obj2dev(obj),
2741                                               fid, OI_CHECK_FLD) ?
2742                                 LMAC_FID_ON_OST : 0, 0);
2743
2744         if (result == 0)
2745                 result = __osd_oi_insert(env, obj, fid, th);
2746
2747         LASSERT(ergo(result == 0,
2748                      dt_object_exists(dt) && !dt_object_remote(dt)));
2749         LINVRNT(osd_invariant(obj));
2750         RETURN(result);
2751 }
2752
2753 static int osd_declare_object_ref_add(const struct lu_env *env,
2754                                       struct dt_object *dt,
2755                                       struct thandle *handle)
2756 {
2757         struct osd_thandle       *oh;
2758
2759         /* it's possible that object doesn't exist yet */
2760         LASSERT(handle != NULL);
2761
2762         oh = container_of0(handle, struct osd_thandle, ot_super);
2763         LASSERT(oh->ot_handle == NULL);
2764
2765         osd_trans_declare_op(env, oh, OSD_OT_REF_ADD,
2766                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2767
2768         return 0;
2769 }
2770
2771 /*
2772  * Concurrency: @dt is write locked.
2773  */
2774 static int osd_object_ref_add(const struct lu_env *env,
2775                               struct dt_object *dt, struct thandle *th)
2776 {
2777         struct osd_object  *obj = osd_dt_obj(dt);
2778         struct inode       *inode = obj->oo_inode;
2779         struct osd_thandle *oh;
2780         int                 rc = 0;
2781
2782         LINVRNT(osd_invariant(obj));
2783         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2784         LASSERT(osd_write_locked(env, obj));
2785         LASSERT(th != NULL);
2786
2787         oh = container_of0(th, struct osd_thandle, ot_super);
2788         LASSERT(oh->ot_handle != NULL);
2789
2790         osd_trans_exec_op(env, th, OSD_OT_REF_ADD);
2791
2792         CDEBUG(D_INODE, DFID" increase nlink %d\n",
2793                PFID(lu_object_fid(&dt->do_lu)), inode->i_nlink);
2794         /*
2795          * The DIR_NLINK feature allows directories to exceed LDISKFS_LINK_MAX
2796          * (65000) subdirectories by storing "1" in i_nlink if the link count
2797          * would otherwise overflow. Directory tranversal tools understand
2798          * that (st_nlink == 1) indicates that the filesystem dose not track
2799          * hard links count on the directory, and will not abort subdirectory
2800          * scanning early once (st_nlink - 2) subdirs have been found.
2801          *
2802          * This also has to properly handle the case of inodes with nlink == 0
2803          * in case they are being linked into the PENDING directory
2804          */
2805         spin_lock(&obj->oo_guard);
2806         ldiskfs_inc_count(oh->ot_handle, inode);
2807         if (!S_ISDIR(inode->i_mode))
2808                 LASSERT(inode->i_nlink <= LDISKFS_LINK_MAX);
2809         spin_unlock(&obj->oo_guard);
2810
2811         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2812         LINVRNT(osd_invariant(obj));
2813
2814         return rc;
2815 }
2816
2817 static int osd_declare_object_ref_del(const struct lu_env *env,
2818                                       struct dt_object *dt,
2819                                       struct thandle *handle)
2820 {
2821         struct osd_thandle *oh;
2822
2823         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2824         LASSERT(handle != NULL);
2825
2826         oh = container_of0(handle, struct osd_thandle, ot_super);
2827         LASSERT(oh->ot_handle == NULL);
2828
2829         osd_trans_declare_op(env, oh, OSD_OT_REF_DEL,
2830                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2831
2832         return 0;
2833 }
2834
2835 /*
2836  * Concurrency: @dt is write locked.
2837  */
2838 static int osd_object_ref_del(const struct lu_env *env, struct dt_object *dt,
2839                               struct thandle *th)
2840 {
2841         struct osd_object       *obj = osd_dt_obj(dt);
2842         struct inode            *inode = obj->oo_inode;
2843         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
2844         struct osd_thandle      *oh;
2845
2846         LINVRNT(osd_invariant(obj));
2847         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2848         LASSERT(osd_write_locked(env, obj));
2849         LASSERT(th != NULL);
2850
2851         oh = container_of0(th, struct osd_thandle, ot_super);
2852         LASSERT(oh->ot_handle != NULL);
2853
2854         osd_trans_exec_op(env, th, OSD_OT_REF_DEL);
2855
2856         spin_lock(&obj->oo_guard);
2857         /* That can be result of upgrade from old Lustre version and
2858          * applied only to local files.  Just skip this ref_del call.
2859          * ext4_unlink() only treats this as a warning, don't LASSERT here.*/
2860         if (inode->i_nlink == 0) {
2861                 CDEBUG_LIMIT(fid_is_norm(lu_object_fid(&dt->do_lu)) ?
2862                              D_ERROR : D_INODE, "%s: nlink == 0 on "DFID
2863                              ", maybe an upgraded file? (LU-3915)\n",
2864                              osd_name(osd), PFID(lu_object_fid(&dt->do_lu)));
2865                 spin_unlock(&obj->oo_guard);
2866                 return 0;
2867         }
2868
2869         CDEBUG(D_INODE, DFID" decrease nlink %d\n",
2870                PFID(lu_object_fid(&dt->do_lu)), inode->i_nlink);
2871
2872         ldiskfs_dec_count(oh->ot_handle, inode);
2873         spin_unlock(&obj->oo_guard);
2874
2875         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2876         LINVRNT(osd_invariant(obj));
2877
2878         return 0;
2879 }
2880
2881 /*
2882  * Get the 64-bit version for an inode.
2883  */
2884 static int osd_object_version_get(const struct lu_env *env,
2885                                   struct dt_object *dt, dt_obj_version_t *ver)
2886 {
2887         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2888
2889         CDEBUG(D_INODE, "Get version "LPX64" for inode %lu\n",
2890                LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2891         *ver = LDISKFS_I(inode)->i_fs_version;
2892         return 0;
2893 }
2894
2895 /*
2896  * Concurrency: @dt is read locked.
2897  */
2898 static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
2899                          struct lu_buf *buf, const char *name,
2900                          struct lustre_capa *capa)
2901 {
2902         struct osd_object      *obj    = osd_dt_obj(dt);
2903         struct inode           *inode  = obj->oo_inode;
2904         struct osd_thread_info *info   = osd_oti_get(env);
2905         struct dentry          *dentry = &info->oti_obj_dentry;
2906
2907         /* version get is not real XATTR but uses xattr API */
2908         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2909                 /* for version we are just using xattr API but change inode
2910                  * field instead */
2911                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2912                 osd_object_version_get(env, dt, buf->lb_buf);
2913                 return sizeof(dt_obj_version_t);
2914         }
2915
2916         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
2917         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
2918
2919         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2920                 return -EACCES;
2921
2922         return __osd_xattr_get(inode, dentry, name, buf->lb_buf, buf->lb_len);
2923 }
2924
2925
2926 static int osd_declare_xattr_set(const struct lu_env *env,
2927                                  struct dt_object *dt,
2928                                  const struct lu_buf *buf, const char *name,
2929                                  int fl, struct thandle *handle)
2930 {
2931         struct osd_thandle *oh;
2932         int credits;
2933
2934         LASSERT(handle != NULL);
2935
2936         oh = container_of0(handle, struct osd_thandle, ot_super);
2937         LASSERT(oh->ot_handle == NULL);
2938
2939         /* optimistic optimization: LMA is set first and usually fit inode */
2940         if (strcmp(name, XATTR_NAME_LMA) == 0) {
2941                 if (dt_object_exists(dt))
2942                         credits = 0;
2943                 else
2944                         credits = 1;
2945         } else if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2946                 credits = 1;
2947         } else {
2948                 struct osd_device  *osd = osd_dev(dt->do_lu.lo_dev);
2949                 struct super_block *sb = osd_sb(osd);
2950                 credits = osd_dto_credits_noquota[DTO_XATTR_SET];
2951                 if (buf && buf->lb_len > sb->s_blocksize) {
2952                         credits *= (buf->lb_len + sb->s_blocksize - 1) >>
2953                                         sb->s_blocksize_bits;
2954                 }
2955         }
2956
2957         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET, credits);
2958
2959         return 0;
2960 }
2961
2962 /*
2963  * Set the 64-bit version for object
2964  */
2965 static void osd_object_version_set(const struct lu_env *env,
2966                                    struct dt_object *dt,
2967                                    dt_obj_version_t *new_version)
2968 {
2969         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2970
2971         CDEBUG(D_INODE, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2972                *new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2973
2974         LDISKFS_I(inode)->i_fs_version = *new_version;
2975         /** Version is set after all inode operations are finished,
2976          *  so we should mark it dirty here */
2977         ll_dirty_inode(inode, I_DIRTY_DATASYNC);
2978 }
2979
2980 /*
2981  * Concurrency: @dt is write locked.
2982  */
2983 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2984                          const struct lu_buf *buf, const char *name, int fl,
2985                          struct thandle *handle, struct lustre_capa *capa)
2986 {
2987         struct osd_object      *obj      = osd_dt_obj(dt);
2988         struct inode           *inode    = obj->oo_inode;
2989         struct osd_thread_info *info     = osd_oti_get(env);
2990         int                     fs_flags = 0;
2991         ENTRY;
2992
2993         LASSERT(handle != NULL);
2994
2995         /* version set is not real XATTR */
2996         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2997                 /* for version we are just using xattr API but change inode
2998                  * field instead */
2999                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
3000                 osd_object_version_set(env, dt, buf->lb_buf);
3001                 return sizeof(dt_obj_version_t);
3002         }
3003
3004         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
3005                 return -EACCES;
3006
3007         CDEBUG(D_INODE, DFID" set xattr '%s' with size %zd\n",
3008                PFID(lu_object_fid(&dt->do_lu)), name, buf->lb_len);
3009
3010         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3011         if (fl & LU_XATTR_REPLACE)
3012                 fs_flags |= XATTR_REPLACE;
3013
3014         if (fl & LU_XATTR_CREATE)
3015                 fs_flags |= XATTR_CREATE;
3016
3017         if (strcmp(name, XATTR_NAME_LMV) == 0) {
3018                 struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
3019                 int                      rc;
3020
3021                 rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
3022                 if (rc != 0)
3023                         RETURN(rc);
3024
3025                 lma->lma_incompat |= LMAI_STRIPED;
3026                 lustre_lma_swab(lma);
3027                 rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA, lma,
3028                                      sizeof(*lma), XATTR_REPLACE);
3029                 if (rc != 0)
3030                         RETURN(rc);
3031         }
3032
3033         return __osd_xattr_set(info, inode, name, buf->lb_buf, buf->lb_len,
3034                                fs_flags);
3035 }
3036
3037 /*
3038  * Concurrency: @dt is read locked.
3039  */
3040 static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
3041                           struct lu_buf *buf, struct lustre_capa *capa)
3042 {
3043         struct osd_object      *obj    = osd_dt_obj(dt);
3044         struct inode           *inode  = obj->oo_inode;
3045         struct osd_thread_info *info   = osd_oti_get(env);
3046         struct dentry          *dentry = &info->oti_obj_dentry;
3047
3048         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3049         LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
3050
3051         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
3052                 return -EACCES;
3053
3054         dentry->d_inode = inode;
3055         dentry->d_sb = inode->i_sb;
3056         return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
3057 }
3058
3059 static int osd_declare_xattr_del(const struct lu_env *env,
3060                                  struct dt_object *dt, const char *name,
3061                                  struct thandle *handle)
3062 {
3063         struct osd_thandle *oh;
3064
3065         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3066         LASSERT(handle != NULL);
3067
3068         oh = container_of0(handle, struct osd_thandle, ot_super);
3069         LASSERT(oh->ot_handle == NULL);
3070
3071         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET,
3072                              osd_dto_credits_noquota[DTO_XATTR_SET]);
3073
3074         return 0;
3075 }
3076
3077 /*
3078  * Concurrency: @dt is write locked.
3079  */
3080 static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
3081                          const char *name, struct thandle *handle,
3082                          struct lustre_capa *capa)
3083 {
3084         struct osd_object      *obj    = osd_dt_obj(dt);
3085         struct inode           *inode  = obj->oo_inode;
3086         struct osd_thread_info *info   = osd_oti_get(env);
3087         struct dentry          *dentry = &info->oti_obj_dentry;
3088         int                     rc;
3089
3090         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3091         LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
3092         LASSERT(handle != NULL);
3093
3094         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
3095                 return -EACCES;
3096
3097         osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3098
3099         ll_vfs_dq_init(inode);
3100         dentry->d_inode = inode;
3101         dentry->d_sb = inode->i_sb;
3102         rc = inode->i_op->removexattr(dentry, name);
3103         return rc;
3104 }
3105
3106 static struct obd_capa *osd_capa_get(const struct lu_env *env,
3107                                      struct dt_object *dt,
3108                                      struct lustre_capa *old, __u64 opc)
3109 {
3110         struct osd_thread_info *info = osd_oti_get(env);
3111         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
3112         struct osd_object *obj = osd_dt_obj(dt);
3113         struct osd_device *osd = osd_obj2dev(obj);
3114         struct lustre_capa_key *key = &info->oti_capa_key;
3115         struct lustre_capa *capa = &info->oti_capa;
3116         struct obd_capa *oc;
3117         struct lu_capainfo *lci;
3118         int rc;
3119         ENTRY;
3120
3121         if (!osd->od_fl_capa)
3122                 RETURN(ERR_PTR(-ENOENT));
3123
3124         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3125         LINVRNT(osd_invariant(obj));
3126
3127         /* renewal sanity check */
3128         if (old && osd_object_auth(env, dt, old, opc))
3129                 RETURN(ERR_PTR(-EACCES));
3130
3131         lci = lu_capainfo_get(env);
3132         if (unlikely(lci == NULL))
3133                 RETURN(ERR_PTR(-ENOENT));
3134
3135         switch (lci->lci_auth) {
3136         case LC_ID_NONE:
3137                 RETURN(NULL);
3138         case LC_ID_PLAIN:
3139                 capa->lc_uid = i_uid_read(obj->oo_inode);
3140                 capa->lc_gid = i_gid_read(obj->oo_inode);
3141                 capa->lc_flags = LC_ID_PLAIN;
3142                 break;
3143         case LC_ID_CONVERT: {
3144                 __u32 d[4], s[4];
3145
3146                 s[0] = i_uid_read(obj->oo_inode);
3147                 cfs_get_random_bytes(&(s[1]), sizeof(__u32));
3148                 s[2] = i_uid_read(obj->oo_inode);
3149                 cfs_get_random_bytes(&(s[3]), sizeof(__u32));
3150                 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
3151                 if (unlikely(rc))
3152                         RETURN(ERR_PTR(rc));
3153
3154                 capa->lc_uid   = ((__u64)d[1] << 32) | d[0];
3155                 capa->lc_gid   = ((__u64)d[3] << 32) | d[2];
3156                 capa->lc_flags = LC_ID_CONVERT;
3157                 break;
3158         }
3159         default:
3160                 RETURN(ERR_PTR(-EINVAL));
3161         }
3162
3163         capa->lc_fid = *fid;
3164         capa->lc_opc = opc;
3165         capa->lc_flags |= osd->od_capa_alg << 24;
3166         capa->lc_timeout = osd->od_capa_timeout;
3167         capa->lc_expiry = 0;
3168
3169         oc = capa_lookup(osd->od_capa_hash, capa, 1);
3170         if (oc) {
3171                 LASSERT(!capa_is_expired(oc));
3172                 RETURN(oc);
3173         }
3174
3175         spin_lock(&capa_lock);
3176         *key = osd->od_capa_keys[1];
3177         spin_unlock(&capa_lock);
3178
3179         capa->lc_keyid = key->lk_keyid;
3180         capa->lc_expiry = cfs_time_current_sec() + osd->od_capa_timeout;
3181
3182         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
3183         if (rc) {
3184                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
3185                 RETURN(ERR_PTR(rc));
3186         }
3187
3188         oc = capa_add(osd->od_capa_hash, capa);
3189         RETURN(oc);
3190 }
3191
3192 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
3193                            __u64 start, __u64 end)
3194 {
3195         struct osd_object       *obj    = osd_dt_obj(dt);
3196         struct inode            *inode  = obj->oo_inode;
3197         struct osd_thread_info  *info   = osd_oti_get(env);
3198         struct dentry           *dentry = &info->oti_obj_dentry;
3199         struct file             *file   = &info->oti_file;
3200         int                     rc;
3201
3202         ENTRY;
3203
3204         dentry->d_inode = inode;
3205         dentry->d_sb = inode->i_sb;
3206         file->f_dentry = dentry;
3207         file->f_mapping = inode->i_mapping;
3208         file->f_op = inode->i_fop;
3209         set_file_inode(file, inode);
3210
3211 #ifdef HAVE_FILE_FSYNC_4ARGS
3212         rc = file->f_op->fsync(file, start, end, 0);
3213 #elif defined(HAVE_FILE_FSYNC_2ARGS)
3214         mutex_lock(&inode->i_mutex);
3215         rc = file->f_op->fsync(file, 0);
3216         mutex_unlock(&inode->i_mutex);
3217 #else
3218         mutex_lock(&inode->i_mutex);
3219         rc = file->f_op->fsync(file, dentry, 0);
3220         mutex_unlock(&inode->i_mutex);
3221 #endif
3222
3223         RETURN(rc);
3224 }
3225
3226 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
3227                         void **data)
3228 {
3229         struct osd_object *obj = osd_dt_obj(dt);
3230         ENTRY;
3231
3232         *data = (void *)obj->oo_inode;
3233         RETURN(0);
3234 }
3235
3236 /*
3237  * Index operations.
3238  */
3239
3240 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
3241                            const struct dt_index_features *feat)
3242 {
3243         struct iam_descr *descr;
3244
3245         if (osd_object_is_root(o))
3246                 return feat == &dt_directory_features;
3247
3248         LASSERT(o->oo_dir != NULL);
3249
3250         descr = o->oo_dir->od_container.ic_descr;
3251         if (feat == &dt_directory_features) {
3252                 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
3253                         return 1;
3254                 else
3255                         return 0;
3256         } else {
3257                 return
3258                         feat->dif_keysize_min <= descr->id_key_size &&
3259                         descr->id_key_size <= feat->dif_keysize_max &&
3260                         feat->dif_recsize_min <= descr->id_rec_size &&
3261                         descr->id_rec_size <= feat->dif_recsize_max &&
3262                         !(feat->dif_flags & (DT_IND_VARKEY |
3263                                              DT_IND_VARREC | DT_IND_NONUNQ)) &&
3264                         ergo(feat->dif_flags & DT_IND_UPDATE,
3265                              1 /* XXX check that object (and file system) is
3266                                 * writable */);
3267         }
3268 }
3269
3270 static int osd_iam_container_init(const struct lu_env *env,
3271                                   struct osd_object *obj,
3272                                   struct osd_directory *dir)
3273 {
3274         struct iam_container *bag = &dir->od_container;
3275         int result;
3276
3277         result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
3278         if (result != 0)
3279                 return result;
3280
3281         result = iam_container_setup(bag);
3282         if (result == 0)
3283                 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
3284         else
3285                 iam_container_fini(bag);
3286
3287         return result;
3288 }
3289
3290
3291 /*
3292  * Concurrency: no external locking is necessary.
3293  */
3294 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
3295                          const struct dt_index_features *feat)
3296 {
3297         int                      result;
3298         int                      skip_iam = 0;
3299         struct osd_object       *obj = osd_dt_obj(dt);
3300
3301         LINVRNT(osd_invariant(obj));
3302
3303         if (osd_object_is_root(obj)) {
3304                 dt->do_index_ops = &osd_index_ea_ops;
3305                 result = 0;
3306         } else if (feat == &dt_directory_features) {
3307                 dt->do_index_ops = &osd_index_ea_ops;
3308                 if (obj->oo_inode != NULL && S_ISDIR(obj->oo_inode->i_mode))
3309                         result = 0;
3310                 else
3311                         result = -ENOTDIR;
3312                 skip_iam = 1;
3313         } else if (unlikely(feat == &dt_otable_features)) {
3314                 dt->do_index_ops = &osd_otable_ops;
3315                 return 0;
3316         } else if (unlikely(feat == &dt_acct_features)) {
3317                 dt->do_index_ops = &osd_acct_index_ops;
3318                 result = 0;
3319                 skip_iam = 1;
3320         } else if (!osd_has_index(obj)) {
3321                 struct osd_directory *dir;
3322
3323                 OBD_ALLOC_PTR(dir);
3324                 if (dir != NULL) {
3325
3326                         spin_lock(&obj->oo_guard);
3327                         if (obj->oo_dir == NULL)
3328                                 obj->oo_dir = dir;
3329                         else
3330                                 /*
3331                                  * Concurrent thread allocated container data.
3332                                  */
3333                                 OBD_FREE_PTR(dir);
3334                         spin_unlock(&obj->oo_guard);
3335                         /*
3336                          * Now, that we have container data, serialize its
3337                          * initialization.
3338                          */
3339                         down_write(&obj->oo_ext_idx_sem);
3340                         /*
3341                          * recheck under lock.
3342                          */
3343                         if (!osd_has_index(obj))
3344                                 result = osd_iam_container_init(env, obj,
3345                                                                 obj->oo_dir);
3346                         else
3347                                 result = 0;
3348                         up_write(&obj->oo_ext_idx_sem);
3349                 } else {
3350                         result = -ENOMEM;
3351                 }
3352         } else {
3353                 result = 0;
3354         }
3355
3356         if (result == 0 && skip_iam == 0) {
3357                 if (!osd_iam_index_probe(env, obj, feat))
3358                         result = -ENOTDIR;
3359         }
3360         LINVRNT(osd_invariant(obj));
3361
3362         if (result == 0 && is_quota_glb_feat(feat) &&
3363             fid_seq(lu_object_fid(&dt->do_lu)) == FID_SEQ_QUOTA_GLB)
3364                 result = osd_quota_migration(env, dt, feat);
3365
3366         return result;
3367 }
3368
3369 static int osd_otable_it_attr_get(const struct lu_env *env,
3370                                  struct dt_object *dt,
3371                                  struct lu_attr *attr,
3372                                  struct lustre_capa *capa)
3373 {
3374         attr->la_valid = 0;
3375         return 0;
3376 }
3377
3378 static const struct dt_object_operations osd_obj_ops = {
3379         .do_read_lock         = osd_object_read_lock,
3380         .do_write_lock        = osd_object_write_lock,
3381         .do_read_unlock       = osd_object_read_unlock,
3382         .do_write_unlock      = osd_object_write_unlock,
3383         .do_write_locked      = osd_object_write_locked,
3384         .do_attr_get          = osd_attr_get,
3385         .do_declare_attr_set  = osd_declare_attr_set,
3386         .do_attr_set          = osd_attr_set,
3387         .do_ah_init           = osd_ah_init,
3388         .do_declare_create    = osd_declare_object_create,
3389         .do_create            = osd_object_create,
3390         .do_declare_destroy   = osd_declare_object_destroy,
3391         .do_destroy           = osd_object_destroy,
3392         .do_index_try         = osd_index_try,
3393         .do_declare_ref_add   = osd_declare_object_ref_add,
3394         .do_ref_add           = osd_object_ref_add,
3395         .do_declare_ref_del   = osd_declare_object_ref_del,
3396         .do_ref_del           = osd_object_ref_del,
3397         .do_xattr_get         = osd_xattr_get,
3398         .do_declare_xattr_set = osd_declare_xattr_set,
3399         .do_xattr_set         = osd_xattr_set,
3400         .do_declare_xattr_del = osd_declare_xattr_del,
3401         .do_xattr_del         = osd_xattr_del,
3402         .do_xattr_list        = osd_xattr_list,
3403         .do_capa_get          = osd_capa_get,
3404         .do_object_sync       = osd_object_sync,
3405         .do_data_get          = osd_data_get,
3406 };
3407
3408 /**
3409  * dt_object_operations for interoperability mode
3410  * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
3411  */
3412 static const struct dt_object_operations osd_obj_ea_ops = {
3413         .do_read_lock         = osd_object_read_lock,
3414         .do_write_lock        = osd_object_write_lock,
3415         .do_read_unlock       = osd_object_read_unlock,
3416         .do_write_unlock      = osd_object_write_unlock,
3417         .do_write_locked      = osd_object_write_locked,
3418         .do_attr_get          = osd_attr_get,
3419         .do_declare_attr_set  = osd_declare_attr_set,
3420         .do_attr_set          = osd_attr_set,
3421         .do_ah_init           = osd_ah_init,
3422         .do_declare_create    = osd_declare_object_create,
3423         .do_create            = osd_object_ea_create,
3424         .do_declare_destroy   = osd_declare_object_destroy,
3425         .do_destroy           = osd_object_destroy,
3426         .do_index_try         = osd_index_try,
3427         .do_declare_ref_add   = osd_declare_object_ref_add,
3428         .do_ref_add           = osd_object_ref_add,
3429         .do_declare_ref_del   = osd_declare_object_ref_del,
3430         .do_ref_del           = osd_object_ref_del,
3431         .do_xattr_get         = osd_xattr_get,
3432         .do_declare_xattr_set = osd_declare_xattr_set,
3433         .do_xattr_set         = osd_xattr_set,
3434         .do_declare_xattr_del = osd_declare_xattr_del,
3435         .do_xattr_del         = osd_xattr_del,
3436         .do_xattr_list        = osd_xattr_list,
3437         .do_capa_get          = osd_capa_get,
3438         .do_object_sync       = osd_object_sync,
3439         .do_data_get          = osd_data_get,
3440 };
3441
3442 static const struct dt_object_operations osd_obj_otable_it_ops = {
3443         .do_attr_get    = osd_otable_it_attr_get,
3444         .do_index_try   = osd_index_try,
3445 };
3446
3447 static int osd_index_declare_iam_delete(const struct lu_env *env,
3448                                         struct dt_object *dt,
3449                                         const struct dt_key *key,
3450                                         struct thandle *handle)
3451 {
3452         struct osd_thandle    *oh;
3453
3454         oh = container_of0(handle, struct osd_thandle, ot_super);
3455         LASSERT(oh->ot_handle == NULL);
3456
3457         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3458                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3459
3460         return 0;
3461 }
3462
3463 /**
3464  *      delete a (key, value) pair from index \a dt specified by \a key
3465  *
3466  *      \param  dt      osd index object
3467  *      \param  key     key for index
3468  *      \param  rec     record reference
3469  *      \param  handle  transaction handler
3470  *
3471  *      \retval  0  success
3472  *      \retval -ve   failure
3473  */
3474
3475 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
3476                                 const struct dt_key *key,
3477                                 struct thandle *handle,
3478                                 struct lustre_capa *capa)
3479 {
3480         struct osd_thread_info *oti = osd_oti_get(env);
3481         struct osd_object      *obj = osd_dt_obj(dt);
3482         struct osd_thandle     *oh;
3483         struct iam_path_descr  *ipd;
3484         struct iam_container   *bag = &obj->oo_dir->od_container;
3485         int                     rc;
3486
3487         ENTRY;
3488
3489         LINVRNT(osd_invariant(obj));
3490         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3491         LASSERT(bag->ic_object == obj->oo_inode);
3492         LASSERT(handle != NULL);
3493
3494         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3495                 RETURN(-EACCES);
3496
3497         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3498
3499         ipd = osd_idx_ipd_get(env, bag);
3500         if (unlikely(ipd == NULL))
3501                 RETURN(-ENOMEM);
3502
3503         oh = container_of0(handle, struct osd_thandle, ot_super);
3504         LASSERT(oh->ot_handle != NULL);
3505         LASSERT(oh->ot_handle->h_transaction != NULL);
3506
3507         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3508                 /* swab quota uid/gid provided by caller */
3509                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3510                 key = (const struct dt_key *)&oti->oti_quota_id;
3511         }
3512
3513         rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
3514         osd_ipd_put(env, bag, ipd);
3515         LINVRNT(osd_invariant(obj));
3516         RETURN(rc);
3517 }
3518
3519 static int osd_index_declare_ea_delete(const struct lu_env *env,
3520                                        struct dt_object *dt,
3521                                        const struct dt_key *key,
3522                                        struct thandle *handle)
3523 {
3524         struct osd_thandle *oh;
3525         struct inode       *inode;
3526         int                 rc;
3527         ENTRY;
3528
3529         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3530         LASSERT(handle != NULL);
3531
3532         oh = container_of0(handle, struct osd_thandle, ot_super);
3533         LASSERT(oh->ot_handle == NULL);
3534
3535         osd_trans_declare_op(env, oh, OSD_OT_DELETE,
3536                              osd_dto_credits_noquota[DTO_INDEX_DELETE]);
3537
3538         inode = osd_dt_obj(dt)->oo_inode;
3539         LASSERT(inode);
3540
3541         rc = osd_declare_inode_qid(env, i_uid_read(inode), i_gid_read(inode),
3542                                    0, oh, true, true, NULL, false);
3543         RETURN(rc);
3544 }
3545
3546 static inline int osd_get_fid_from_dentry(struct ldiskfs_dir_entry_2 *de,
3547                                           struct dt_rec *fid)
3548 {
3549         struct osd_fid_pack *rec;
3550         int                  rc = -ENODATA;
3551
3552         if (de->file_type & LDISKFS_DIRENT_LUFID) {
3553                 rec = (struct osd_fid_pack *) (de->name + de->name_len + 1);
3554                 rc = osd_fid_unpack((struct lu_fid *)fid, rec);
3555         }
3556         return rc;
3557 }
3558
3559 static int osd_remote_fid(const struct lu_env *env, struct osd_device *osd,
3560                           struct lu_fid *fid)
3561 {
3562         ENTRY;
3563
3564         /* FID seqs not in FLDB, must be local seq */
3565         if (unlikely(!fid_seq_in_fldb(fid_seq(fid))))
3566                 RETURN(0);
3567
3568         if (osd_seq_exists(env, osd, fid_seq(fid)))
3569                 RETURN(0);
3570
3571         RETURN(1);
3572 }
3573
3574 /**
3575  * Index delete function for interoperability mode (b11826).
3576  * It will remove the directory entry added by osd_index_ea_insert().
3577  * This entry is needed to maintain name->fid mapping.
3578  *
3579  * \param key,  key i.e. file entry to be deleted
3580  *
3581  * \retval   0, on success
3582  * \retval -ve, on error
3583  */
3584 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
3585                                const struct dt_key *key,
3586                                struct thandle *handle,
3587                                struct lustre_capa *capa)
3588 {
3589         struct osd_object          *obj    = osd_dt_obj(dt);
3590         struct inode               *dir    = obj->oo_inode;
3591         struct dentry              *dentry;
3592         struct osd_thandle         *oh;
3593         struct ldiskfs_dir_entry_2 *de = NULL;
3594         struct buffer_head         *bh;
3595         struct htree_lock          *hlock = NULL;
3596         struct lu_fid              *fid = &osd_oti_get(env)->oti_fid;
3597         struct osd_device          *osd = osd_dev(dt->do_lu.lo_dev);
3598         int                        rc;
3599         ENTRY;
3600
3601         LINVRNT(osd_invariant(obj));
3602         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3603         LASSERT(handle != NULL);
3604
3605         osd_trans_exec_op(env, handle, OSD_OT_DELETE);
3606
3607         oh = container_of(handle, struct osd_thandle, ot_super);
3608         LASSERT(oh->ot_handle != NULL);
3609         LASSERT(oh->ot_handle->h_transaction != NULL);
3610
3611         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3612                 RETURN(-EACCES);
3613
3614         ll_vfs_dq_init(dir);
3615         dentry = osd_child_dentry_get(env, obj,
3616                                       (char *)key, strlen((char *)key));
3617
3618         if (obj->oo_hl_head != NULL) {
3619                 hlock = osd_oti_get(env)->oti_hlock;
3620                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3621                                    dir, LDISKFS_HLOCK_DEL);
3622         } else {
3623                 down_write(&obj->oo_ext_idx_sem);
3624         }
3625
3626         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
3627         if (bh) {
3628                 __u32 ino = 0;
3629
3630                 /* If this is not the ".." entry, it might be a remote DNE
3631                  * entry and  we need to check if the FID is for a remote
3632                  * MDT.  If the FID is  not in the directory entry (e.g.
3633                  * upgraded 1.8 filesystem without dirdata enabled) then
3634                  * we need to get the FID from the LMA. For a remote directory
3635                  * there HAS to be an LMA, it cannot be an IGIF inode in this
3636                  * case.
3637                  *
3638                  * Delete the entry before the agent inode in order to
3639                  * simplify error handling.  At worst an error after deleting
3640                  * the entry first might leak the agent inode afterward. The
3641                  * reverse would need filesystem abort in case of error deleting
3642                  * the entry after the agent had been removed, or leave a
3643                  * dangling entry pointing at a random inode. */
3644                 if (strcmp((char *)key, dotdot) != 0) {
3645                         LASSERT(de != NULL);
3646                         rc = osd_get_fid_from_dentry(de, (struct dt_rec *)fid);
3647                         /* If Fid is not in dentry, try to get it from LMA */
3648                         if (rc == -ENODATA) {
3649                                 struct osd_inode_id *id;
3650                                 struct inode *inode;
3651
3652                                 /* Before trying to get fid from the inode,
3653                                  * check whether the inode is valid.
3654                                  *
3655                                  * If the inode has been deleted, do not go
3656                                  * ahead to do osd_ea_fid_get, which will set
3657                                  * the inode to bad inode, which might cause
3658                                  * the inode to be deleted uncorrectly */
3659                                 inode = ldiskfs_iget(osd_sb(osd),
3660                                                      le32_to_cpu(de->inode));
3661                                 if (IS_ERR(inode)) {
3662                                         CDEBUG(D_INODE, "%s: "DFID"get inode"
3663                                                "error.\n", osd_name(osd),
3664                                                PFID(fid));
3665                                         rc = PTR_ERR(inode);
3666                                 } else {
3667                                         if (likely(inode->i_nlink != 0)) {
3668                                                 id = &osd_oti_get(env)->oti_id;
3669                                                 rc = osd_ea_fid_get(env, obj,
3670                                                         le32_to_cpu(de->inode),
3671                                                                     fid, id);
3672                                         } else {
3673                                                 CDEBUG(D_INFO, "%s: %u "DFID
3674                                                        "deleted.\n",
3675                                                        osd_name(osd),
3676                                                        le32_to_cpu(de->inode),
3677                                                        PFID(fid));
3678                                                 rc = -ESTALE;
3679                                         }
3680                                         iput(inode);
3681                                 }
3682                         }
3683                         if (rc == 0 &&
3684                             unlikely(osd_remote_fid(env, osd, fid)))
3685                                 /* Need to delete agent inode */
3686                                 ino = le32_to_cpu(de->inode);
3687                 }
3688                 rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh);
3689                 brelse(bh);
3690                 if (rc == 0 && unlikely(ino != 0)) {
3691                         rc = osd_delete_local_agent_inode(env, osd, fid, ino,
3692                                                           oh);
3693                         if (rc != 0)
3694                                 CERROR("%s: del local inode "DFID": rc = %d\n",
3695                                        osd_name(osd), PFID(fid), rc);
3696                 }
3697         } else {
3698                 rc = -ENOENT;
3699         }
3700         if (hlock != NULL)
3701                 ldiskfs_htree_unlock(hlock);
3702         else
3703                 up_write(&obj->oo_ext_idx_sem);
3704
3705         if (rc != 0)
3706                 GOTO(out, rc);
3707
3708         /* For inode on the remote MDT, .. will point to
3709          * /Agent directory, Check whether it needs to delete
3710          * from agent directory */
3711         if (unlikely(strcmp((char *)key, dotdot) == 0)) {
3712                 rc = osd_delete_from_remote_parent(env, osd_obj2dev(obj), obj,
3713                                                    oh);
3714                 if (rc != 0 && rc != -ENOENT) {
3715                         CERROR("%s: delete agent inode "DFID": rc = %d\n",
3716                                osd_name(osd), PFID(fid), rc);
3717                 }
3718
3719                 if (rc == -ENOENT)
3720                         rc = 0;
3721
3722                 GOTO(out, rc);
3723         }
3724 out:
3725
3726         LASSERT(osd_invariant(obj));
3727         RETURN(rc);
3728 }
3729
3730 /**
3731  *      Lookup index for \a key and copy record to \a rec.
3732  *
3733  *      \param  dt      osd index object
3734  *      \param  key     key for index
3735  *      \param  rec     record reference
3736  *
3737  *      \retval  +ve  success : exact mach
3738  *      \retval  0    return record with key not greater than \a key
3739  *      \retval -ve   failure
3740  */
3741 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
3742                                 struct dt_rec *rec, const struct dt_key *key,
3743                                 struct lustre_capa *capa)
3744 {
3745         struct osd_object      *obj = osd_dt_obj(dt);
3746         struct iam_path_descr  *ipd;
3747         struct iam_container   *bag = &obj->oo_dir->od_container;
3748         struct osd_thread_info *oti = osd_oti_get(env);
3749         struct iam_iterator    *it = &oti->oti_idx_it;
3750         struct iam_rec         *iam_rec;
3751         int                     rc;
3752
3753         ENTRY;
3754
3755         LASSERT(osd_invariant(obj));
3756         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3757         LASSERT(bag->ic_object == obj->oo_inode);
3758
3759         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3760                 RETURN(-EACCES);
3761
3762         ipd = osd_idx_ipd_get(env, bag);
3763         if (IS_ERR(ipd))
3764                 RETURN(-ENOMEM);
3765
3766         /* got ipd now we can start iterator. */
3767         iam_it_init(it, bag, 0, ipd);
3768
3769         if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3770                 /* swab quota uid/gid provided by caller */
3771                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3772                 key = (const struct dt_key *)&oti->oti_quota_id;
3773         }
3774
3775         rc = iam_it_get(it, (struct iam_key *)key);
3776         if (rc >= 0) {
3777                 if (S_ISDIR(obj->oo_inode->i_mode))
3778                         iam_rec = (struct iam_rec *)oti->oti_ldp;
3779                 else
3780                         iam_rec = (struct iam_rec *) rec;
3781
3782                 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
3783
3784                 if (S_ISDIR(obj->oo_inode->i_mode))
3785                         osd_fid_unpack((struct lu_fid *) rec,
3786                                        (struct osd_fid_pack *)iam_rec);
3787                 else if (fid_is_quota(lu_object_fid(&dt->do_lu)))
3788                         osd_quota_unpack(obj, rec);
3789         }
3790
3791         iam_it_put(it);
3792         iam_it_fini(it);
3793         osd_ipd_put(env, bag, ipd);
3794
3795         LINVRNT(osd_invariant(obj));
3796
3797         RETURN(rc);
3798 }
3799
3800 static int osd_index_declare_iam_insert(const struct lu_env *env,
3801                                         struct dt_object *dt,
3802                                         const struct dt_rec *rec,
3803                                         const struct dt_key *key,
3804                                         struct thandle *handle)
3805 {
3806         struct osd_thandle *oh;
3807
3808         LASSERT(handle != NULL);
3809
3810         oh = container_of0(handle, struct osd_thandle, ot_super);
3811         LASSERT(oh->ot_handle == NULL);
3812
3813         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
3814                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
3815
3816         return 0;
3817 }
3818
3819 /**
3820  *      Inserts (key, value) pair in \a dt index object.
3821  *
3822  *      \param  dt      osd index object
3823  *      \param  key     key for index
3824  *      \param  rec     record reference
3825  *      \param  th      transaction handler
3826  *
3827  *      \retval  0  success
3828  *      \retval -ve failure
3829  */
3830 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
3831                                 const struct dt_rec *rec,
3832                                 const struct dt_key *key, struct thandle *th,
3833                                 struct lustre_capa *capa, int ignore_quota)
3834 {
3835         struct osd_object     *obj = osd_dt_obj(dt);
3836         struct iam_path_descr *ipd;
3837         struct osd_thandle    *oh;
3838         struct iam_container  *bag = &obj->oo_dir->od_container;
3839         struct osd_thread_info *oti = osd_oti_get(env);
3840         struct iam_rec         *iam_rec;
3841         int                     rc;
3842
3843         ENTRY;
3844
3845         LINVRNT(osd_invariant(obj));
3846         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
3847         LASSERT(bag->ic_object == obj->oo_inode);
3848         LASSERT(th != NULL);
3849
3850         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3851                 RETURN(-EACCES);
3852
3853         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3854
3855         ipd = osd_idx_ipd_get(env, bag);
3856         if (unlikely(ipd == NULL))
3857                 RETURN(-ENOMEM);
3858
3859         oh = container_of0(th, struct osd_thandle, ot_super);
3860         LASSERT(oh->ot_handle != NULL);
3861         LASSERT(oh->ot_handle->h_transaction != NULL);
3862         if (S_ISDIR(obj->oo_inode->i_mode)) {
3863                 iam_rec = (struct iam_rec *)oti->oti_ldp;
3864                 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
3865         } else if (fid_is_quota(lu_object_fid(&dt->do_lu))) {
3866                 /* pack quota uid/gid */
3867                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
3868                 key = (const struct dt_key *)&oti->oti_quota_id;
3869                 /* pack quota record */
3870                 rec = osd_quota_pack(obj, rec, &oti->oti_quota_rec);
3871                 iam_rec = (struct iam_rec *)rec;
3872         } else {
3873                 iam_rec = (struct iam_rec *)rec;
3874         }
3875
3876         rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
3877                         iam_rec, ipd);
3878         osd_ipd_put(env, bag, ipd);
3879         LINVRNT(osd_invariant(obj));
3880         RETURN(rc);
3881 }
3882
3883 /**
3884  * Calls ldiskfs_add_entry() to add directory entry
3885  * into the directory. This is required for
3886  * interoperability mode (b11826)
3887  *
3888  * \retval   0, on success
3889  * \retval -ve, on error
3890  */
3891 static int __osd_ea_add_rec(struct osd_thread_info *info,
3892                             struct osd_object *pobj, struct inode  *cinode,
3893                             const char *name, const struct dt_rec *fid,
3894                             struct htree_lock *hlock, struct thandle *th)
3895 {
3896         struct ldiskfs_dentry_param *ldp;
3897         struct dentry               *child;
3898         struct osd_thandle          *oth;
3899         int                          rc;
3900
3901         oth = container_of(th, struct osd_thandle, ot_super);
3902         LASSERT(oth->ot_handle != NULL);
3903         LASSERT(oth->ot_handle->h_transaction != NULL);
3904         LASSERT(pobj->oo_inode);
3905
3906         ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3907         if (unlikely(pobj->oo_inode ==
3908                      osd_sb(osd_obj2dev(pobj))->s_root->d_inode))
3909                 ldp->edp_magic = 0;
3910         else
3911                 osd_get_ldiskfs_dirent_param(ldp, fid);
3912         child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
3913         child->d_fsdata = (void *)ldp;
3914         ll_vfs_dq_init(pobj->oo_inode);
3915         rc = osd_ldiskfs_add_entry(oth->ot_handle, child, cinode, hlock);
3916
3917         RETURN(rc);
3918 }
3919
3920 /**
3921  * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
3922  * into the directory.Also sets flags into osd object to
3923  * indicate dot and dotdot are created. This is required for
3924  * interoperability mode (b11826)
3925  *
3926  * \param dir   directory for dot and dotdot fixup.
3927  * \param obj   child object for linking
3928  *
3929  * \retval   0, on success
3930  * \retval -ve, on error
3931  */
3932 static int osd_add_dot_dotdot(struct osd_thread_info *info,
3933                               struct osd_object *dir,
3934                               struct inode  *parent_dir, const char *name,
3935                               const struct dt_rec *dot_fid,
3936                               const struct dt_rec *dot_dot_fid,
3937                               struct thandle *th)
3938 {
3939         struct inode                *inode = dir->oo_inode;
3940         struct osd_thandle          *oth;
3941         int result = 0;
3942
3943         oth = container_of(th, struct osd_thandle, ot_super);
3944         LASSERT(oth->ot_handle->h_transaction != NULL);
3945         LASSERT(S_ISDIR(dir->oo_inode->i_mode));
3946
3947         if (strcmp(name, dot) == 0) {
3948                 if (dir->oo_compat_dot_created) {
3949                         result = -EEXIST;
3950                 } else {
3951                         LASSERT(inode == parent_dir);
3952                         dir->oo_compat_dot_created = 1;
3953                         result = 0;
3954                 }
3955         } else if (strcmp(name, dotdot) == 0) {
3956                 if (!dir->oo_compat_dot_created)
3957                         return -EINVAL;
3958                 /* in case of rename, dotdot is already created */
3959                 if (dir->oo_compat_dotdot_created) {
3960                         return __osd_ea_add_rec(info, dir, parent_dir, name,
3961                                                 dot_dot_fid, NULL, th);
3962                 }
3963
3964                 result = osd_add_dot_dotdot_internal(info, dir->oo_inode,
3965                                                 parent_dir, dot_fid,
3966                                                 dot_dot_fid, oth);
3967                 if (result == 0)
3968                         dir->oo_compat_dotdot_created = 1;
3969         }
3970
3971         return result;
3972 }
3973
3974
3975 /**
3976  * It will call the appropriate osd_add* function and return the
3977  * value, return by respective functions.
3978  */
3979 static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj,
3980                           struct inode *cinode, const char *name,
3981                           const struct dt_rec *fid, struct thandle *th)
3982 {
3983         struct osd_thread_info *info   = osd_oti_get(env);
3984         struct htree_lock      *hlock;
3985         int                     rc;
3986
3987         hlock = pobj->oo_hl_head != NULL ? info->oti_hlock : NULL;
3988
3989         if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
3990                                                    name[2] =='\0'))) {
3991                 if (hlock != NULL) {
3992                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3993                                            pobj->oo_inode, 0);
3994                 } else {
3995                         down_write(&pobj->oo_ext_idx_sem);
3996                 }
3997                 rc = osd_add_dot_dotdot(info, pobj, cinode, name,
3998                      (struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
3999                                         fid, th);
4000         } else {
4001                 if (hlock != NULL) {
4002                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
4003                                            pobj->oo_inode, LDISKFS_HLOCK_ADD);
4004                 } else {
4005                         down_write(&pobj->oo_ext_idx_sem);
4006                 }
4007
4008                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_INDIR)) {
4009                         struct lu_fid *tfid = &info->oti_fid;
4010
4011                         *tfid = *(const struct lu_fid *)fid;
4012                         tfid->f_ver = ~0;
4013                         rc = __osd_ea_add_rec(info, pobj, cinode, name,
4014                                               (const struct dt_rec *)tfid,
4015                                               hlock, th);
4016                 } else {
4017                         rc = __osd_ea_add_rec(info, pobj, cinode, name, fid,
4018                                               hlock, th);
4019                 }
4020         }
4021         if (hlock != NULL)
4022                 ldiskfs_htree_unlock(hlock);
4023         else
4024                 up_write(&pobj->oo_ext_idx_sem);
4025
4026         return rc;
4027 }
4028
4029 static void
4030 osd_consistency_check(struct osd_thread_info *oti, struct osd_device *dev,
4031                       struct osd_idmap_cache *oic)
4032 {
4033         struct osd_scrub    *scrub = &dev->od_scrub;
4034         struct lu_fid       *fid   = &oic->oic_fid;
4035         struct osd_inode_id *id    = &oti->oti_id;
4036         int                  once  = 0;
4037         int                  rc;
4038         ENTRY;
4039
4040         if (!fid_is_norm(fid) && !fid_is_igif(fid))
4041                 RETURN_EXIT;
4042
4043 again:
4044         rc = osd_oi_lookup(oti, dev, fid, id, OI_CHECK_FLD);
4045         if (rc != 0 && rc != -ENOENT)
4046                 RETURN_EXIT;
4047
4048         if (rc == 0 && osd_id_eq(id, &oic->oic_lid))
4049                 RETURN_EXIT;
4050
4051         if (thread_is_running(&scrub->os_thread)) {
4052                 rc = osd_oii_insert(dev, oic, rc == -ENOENT);
4053                 /* There is race condition between osd_oi_lookup and OI scrub.
4054                  * The OI scrub finished just after osd_oi_lookup() failure.
4055                  * Under such case, it is unnecessary to trigger OI scrub again,
4056                  * but try to call osd_oi_lookup() again. */
4057                 if (unlikely(rc == -EAGAIN))
4058                         goto again;
4059
4060                 RETURN_EXIT;
4061         }
4062
4063         if (!dev->od_noscrub && ++once == 1) {
4064                 rc = osd_scrub_start(dev);
4065                 LCONSOLE_WARN("%.16s: trigger OI scrub by RPC for "DFID
4066                               ", rc = %d [2]\n",
4067                               LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
4068                               PFID(fid), rc);
4069                 if (rc == 0)
4070                         goto again;
4071         }
4072
4073         EXIT;
4074 }
4075
4076 static int osd_fail_fid_lookup(struct osd_thread_info *oti,
4077                                struct osd_device *dev,
4078                                struct osd_idmap_cache *oic,
4079                                struct lu_fid *fid, __u32 ino)
4080 {
4081         struct lustre_mdt_attrs *lma   = &oti->oti_mdt_attrs;
4082         struct inode            *inode;
4083         int                      rc;
4084
4085         osd_id_gen(&oic->oic_lid, ino, OSD_OII_NOGEN);
4086         inode = osd_iget(oti, dev, &oic->oic_lid);
4087         if (IS_ERR(inode)) {
4088                 fid_zero(&oic->oic_fid);
4089                 return PTR_ERR(inode);
4090         }
4091
4092         rc = osd_get_lma(oti, inode, &oti->oti_obj_dentry, lma);
4093         iput(inode);
4094         if (rc != 0)
4095                 fid_zero(&oic->oic_fid);
4096         else
4097                 *fid = oic->oic_fid = lma->lma_self_fid;
4098         return rc;
4099 }
4100
4101 int osd_add_oi_cache(struct osd_thread_info *info, struct osd_device *osd,
4102                      struct osd_inode_id *id, const struct lu_fid *fid)
4103 {
4104         CDEBUG(D_INODE, "add "DFID" %u:%u to info %p\n", PFID(fid),
4105                id->oii_ino, id->oii_gen, info);
4106         info->oti_cache.oic_lid = *id;
4107         info->oti_cache.oic_fid = *fid;
4108         info->oti_cache.oic_dev = osd;
4109
4110         return 0;
4111 }
4112
4113 /**
4114  * Calls ->lookup() to find dentry. From dentry get inode and
4115  * read inode's ea to get fid. This is required for  interoperability
4116  * mode (b11826)
4117  *
4118  * \retval   0, on success
4119  * \retval -ve, on error
4120  */
4121 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
4122                              struct dt_rec *rec, const struct dt_key *key)
4123 {
4124         struct inode               *dir    = obj->oo_inode;
4125         struct dentry              *dentry;
4126         struct ldiskfs_dir_entry_2 *de;
4127         struct buffer_head         *bh;
4128         struct lu_fid              *fid = (struct lu_fid *) rec;
4129         struct htree_lock          *hlock = NULL;
4130         int                         ino;
4131         int                         rc;
4132         ENTRY;
4133
4134         LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
4135
4136         dentry = osd_child_dentry_get(env, obj,
4137                                       (char *)key, strlen((char *)key));
4138
4139         if (obj->oo_hl_head != NULL) {
4140                 hlock = osd_oti_get(env)->oti_hlock;
4141                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4142                                    dir, LDISKFS_HLOCK_LOOKUP);
4143         } else {
4144                 down_read(&obj->oo_ext_idx_sem);
4145         }
4146
4147         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
4148         if (bh) {
4149                 struct osd_thread_info *oti = osd_oti_get(env);
4150                 struct osd_inode_id *id = &oti->oti_id;
4151                 struct osd_idmap_cache *oic = &oti->oti_cache;
4152                 struct osd_device *dev = osd_obj2dev(obj);
4153                 struct osd_scrub *scrub = &dev->od_scrub;
4154                 struct scrub_file *sf = &scrub->os_file;
4155
4156                 ino = le32_to_cpu(de->inode);
4157                 if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP)) {
4158                         brelse(bh);
4159                         rc = osd_fail_fid_lookup(oti, dev, oic, fid, ino);
4160                         GOTO(out, rc);
4161                 }
4162
4163                 rc = osd_get_fid_from_dentry(de, rec);
4164
4165                 /* done with de, release bh */
4166                 brelse(bh);
4167                 if (rc != 0)
4168                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
4169                 else
4170                         osd_id_gen(id, ino, OSD_OII_NOGEN);
4171                 if (rc != 0) {
4172                         fid_zero(&oic->oic_fid);
4173                         GOTO(out, rc);
4174                 }
4175
4176                 if (osd_remote_fid(env, dev, fid))
4177                         GOTO(out, rc = 0);
4178
4179                 rc = osd_add_oi_cache(osd_oti_get(env), osd_obj2dev(obj), id,
4180                                       fid);
4181                 if (rc != 0)
4182                         GOTO(out, rc);
4183                 if ((scrub->os_pos_current <= ino) &&
4184                     ((sf->sf_flags & SF_INCONSISTENT) ||
4185                      (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
4186                      ldiskfs_test_bit(osd_oi_fid2idx(dev, fid),
4187                                       sf->sf_oi_bitmap)))
4188                         osd_consistency_check(oti, dev, oic);
4189         } else {
4190                 rc = -ENOENT;
4191         }
4192
4193         GOTO(out, rc);
4194
4195 out:
4196         if (hlock != NULL)
4197                 ldiskfs_htree_unlock(hlock);
4198         else
4199                 up_read(&obj->oo_ext_idx_sem);
4200         return rc;
4201 }
4202
4203 /**
4204  * Find the osd object for given fid.
4205  *
4206  * \param fid need to find the osd object having this fid
4207  *
4208  * \retval osd_object on success
4209  * \retval        -ve on error
4210  */
4211 struct osd_object *osd_object_find(const struct lu_env *env,
4212                                    struct dt_object *dt,
4213                                    const struct lu_fid *fid)
4214 {
4215         struct lu_device  *ludev = dt->do_lu.lo_dev;
4216         struct osd_object *child = NULL;
4217         struct lu_object  *luch;
4218         struct lu_object  *lo;
4219
4220         /*
4221          * at this point topdev might not exist yet
4222          * (i.e. MGS is preparing profiles). so we can
4223          * not rely on topdev and instead lookup with
4224          * our device passed as topdev. this can't work
4225          * if the object isn't cached yet (as osd doesn't
4226          * allocate lu_header). IOW, the object must be
4227          * in the cache, otherwise lu_object_alloc() crashes
4228          * -bzzz
4229          */
4230         luch = lu_object_find_at(env, ludev->ld_site->ls_top_dev == NULL ?
4231                                  ludev : ludev->ld_site->ls_top_dev,
4232                                  fid, NULL);
4233         if (!IS_ERR(luch)) {
4234                 if (lu_object_exists(luch)) {
4235                         lo = lu_object_locate(luch->lo_header, ludev->ld_type);
4236                         if (lo != NULL)
4237                                 child = osd_obj(lo);
4238                         else
4239                                 LU_OBJECT_DEBUG(D_ERROR, env, luch,
4240                                                 "lu_object can't be located"
4241                                                 DFID"\n", PFID(fid));
4242
4243                         if (child == NULL) {
4244                                 lu_object_put(env, luch);
4245                                 CERROR("Unable to get osd_object\n");
4246                                 child = ERR_PTR(-ENOENT);
4247                         }
4248                 } else {
4249                         LU_OBJECT_DEBUG(D_ERROR, env, luch,
4250                                         "lu_object does not exists "DFID"\n",
4251                                         PFID(fid));
4252                         lu_object_put(env, luch);
4253                         child = ERR_PTR(-ENOENT);
4254                 }
4255         } else {
4256                 child = ERR_CAST(luch);
4257         }
4258
4259         return child;
4260 }
4261
4262 /**
4263  * Put the osd object once done with it.
4264  *
4265  * \param obj osd object that needs to be put
4266  */
4267 static inline void osd_object_put(const struct lu_env *env,
4268                                   struct osd_object *obj)
4269 {
4270         lu_object_put(env, &obj->oo_dt.do_lu);
4271 }
4272
4273 static int osd_index_declare_ea_insert(const struct lu_env *env,
4274                                        struct dt_object *dt,
4275                                        const struct dt_rec *rec,
4276                                        const struct dt_key *key,
4277                                        struct thandle *handle)
4278 {
4279         struct osd_thandle      *oh;
4280         struct osd_device       *osd   = osd_dev(dt->do_lu.lo_dev);
4281         struct lu_fid           *fid = (struct lu_fid *)rec;
4282         int                     rc;
4283         ENTRY;
4284
4285         LASSERT(!dt_object_remote(dt));
4286         LASSERT(handle != NULL);
4287
4288         oh = container_of0(handle, struct osd_thandle, ot_super);
4289         LASSERT(oh->ot_handle == NULL);
4290
4291         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4292                              osd_dto_credits_noquota[DTO_INDEX_INSERT]);
4293
4294         if (osd_dt_obj(dt)->oo_inode != NULL) {
4295                 struct inode *inode = osd_dt_obj(dt)->oo_inode;
4296
4297                 /* We ignore block quota on meta pool (MDTs), so needn't
4298                  * calculate how many blocks will be consumed by this index
4299                  * insert */
4300                 rc = osd_declare_inode_qid(env, i_uid_read(inode),
4301                                            i_gid_read(inode), 0,
4302                                            oh, true, true, NULL, false);
4303         }
4304
4305         if (fid == NULL)
4306                 RETURN(0);
4307
4308         rc = osd_remote_fid(env, osd, fid);
4309         if (rc <= 0)
4310                 RETURN(rc);
4311
4312         rc = 0;
4313
4314         osd_trans_declare_op(env, oh, OSD_OT_CREATE,
4315                              osd_dto_credits_noquota[DTO_OBJECT_CREATE]);
4316         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4317                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
4318         osd_trans_declare_op(env, oh, OSD_OT_INSERT,
4319                              osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1);
4320
4321         RETURN(rc);
4322 }
4323
4324 /**
4325  * Index add function for interoperability mode (b11826).
4326  * It will add the directory entry.This entry is needed to
4327  * maintain name->fid mapping.
4328  *
4329  * \param key it is key i.e. file entry to be inserted
4330  * \param rec it is value of given key i.e. fid
4331  *
4332  * \retval   0, on success
4333  * \retval -ve, on error
4334  */
4335 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
4336                                const struct dt_rec *rec,
4337                                const struct dt_key *key, struct thandle *th,
4338                                struct lustre_capa *capa, int ignore_quota)
4339 {
4340         struct osd_object       *obj = osd_dt_obj(dt);
4341         struct osd_device       *osd = osd_dev(dt->do_lu.lo_dev);
4342         struct lu_fid           *fid = (struct lu_fid *) rec;
4343         const char              *name = (const char *)key;
4344         struct osd_thread_info  *oti   = osd_oti_get(env);
4345         struct osd_inode_id     *id    = &oti->oti_id;
4346         struct inode            *child_inode = NULL;
4347         struct osd_object       *child = NULL;
4348         int                     rc;
4349         ENTRY;
4350
4351         LASSERT(osd_invariant(obj));
4352         LASSERT(dt_object_exists(dt) && !dt_object_remote(dt));
4353         LASSERT(th != NULL);
4354
4355         osd_trans_exec_op(env, th, OSD_OT_INSERT);
4356
4357         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
4358                 RETURN(-EACCES);
4359
4360         LASSERTF(fid_is_sane(fid), "fid"DFID" is insane!", PFID(fid));
4361
4362         rc = osd_remote_fid(env, osd, fid);
4363         if (rc < 0) {
4364                 CERROR("%s: Can not find object "DFID" rc %d\n",
4365                        osd_name(osd), PFID(fid), rc);
4366                 RETURN(rc);
4367         }
4368
4369         if (rc == 1) {
4370                 /* Insert remote entry */
4371                 if (strcmp(name, dotdot) == 0 && strlen(name) == 2) {
4372                         struct osd_mdobj_map    *omm = osd->od_mdt_map;
4373                         struct osd_thandle      *oh;
4374
4375                         /* If parent on remote MDT, we need put this object
4376                          * under AGENT */
4377                         oh = container_of(th, typeof(*oh), ot_super);
4378                         rc = osd_add_to_remote_parent(env, osd, obj, oh);
4379                         if (rc != 0) {
4380                                 CERROR("%s: add "DFID" error: rc = %d\n",
4381                                        osd_name(osd),
4382                                        PFID(lu_object_fid(&dt->do_lu)), rc);
4383                                 RETURN(rc);
4384                         }
4385
4386                         child_inode = igrab(omm->omm_remote_parent->d_inode);
4387                 } else {
4388                         child_inode = osd_create_local_agent_inode(env, osd,
4389                                                                    obj, fid,
4390                                                                    th);
4391                         if (IS_ERR(child_inode))
4392                                 RETURN(PTR_ERR(child_inode));
4393                 }
4394         } else {
4395                 /* Insert local entry */
4396                 child = osd_object_find(env, dt, fid);
4397                 if (IS_ERR(child)) {
4398                         CERROR("%s: Can not find object "DFID"%u:%u: rc = %d\n",
4399                                osd_name(osd), PFID(fid),
4400                                id->oii_ino, id->oii_gen,
4401                                (int)PTR_ERR(child));
4402                         RETURN(PTR_ERR(child));
4403                 }
4404                 child_inode = igrab(child->oo_inode);
4405         }
4406
4407         rc = osd_ea_add_rec(env, obj, child_inode, name, rec, th);
4408
4409         CDEBUG(D_INODE, "parent %lu insert %s:%lu rc = %d\n",
4410                obj->oo_inode->i_ino, name, child_inode->i_ino, rc);
4411
4412         iput(child_inode);
4413         if (child != NULL)
4414                 osd_object_put(env, child);
4415         LASSERT(osd_invariant(obj));
4416         RETURN(rc);
4417 }
4418
4419 /**
4420  *  Initialize osd Iterator for given osd index object.
4421  *
4422  *  \param  dt      osd index object
4423  */
4424
4425 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
4426                                      struct dt_object *dt,
4427                                      __u32 unused,
4428                                      struct lustre_capa *capa)
4429 {
4430         struct osd_it_iam      *it;
4431         struct osd_thread_info *oti = osd_oti_get(env);
4432         struct osd_object      *obj = osd_dt_obj(dt);
4433         struct lu_object       *lo  = &dt->do_lu;
4434         struct iam_path_descr  *ipd;
4435         struct iam_container   *bag = &obj->oo_dir->od_container;
4436
4437         LASSERT(lu_object_exists(lo));
4438
4439         if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
4440                 return ERR_PTR(-EACCES);
4441
4442         it = &oti->oti_it;
4443         ipd = osd_it_ipd_get(env, bag);
4444         if (likely(ipd != NULL)) {
4445                 it->oi_obj = obj;
4446                 it->oi_ipd = ipd;
4447                 lu_object_get(lo);
4448                 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
4449                 return (struct dt_it *)it;
4450         }
4451         return ERR_PTR(-ENOMEM);
4452 }
4453
4454 /**
4455  * free given Iterator.
4456  */
4457
4458 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
4459 {
4460         struct osd_it_iam *it = (struct osd_it_iam *)di;
4461         struct osd_object *obj = it->oi_obj;
4462
4463         iam_it_fini(&it->oi_it);
4464         osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
4465         lu_object_put(env, &obj->oo_dt.do_lu);
4466 }
4467
4468 /**
4469  *  Move Iterator to record specified by \a key
4470  *
4471  *  \param  di      osd iterator
4472  *  \param  key     key for index
4473  *
4474  *  \retval +ve  di points to record with least key not larger than key
4475  *  \retval  0   di points to exact matched key
4476  *  \retval -ve  failure
4477  */
4478
4479 static int osd_it_iam_get(const struct lu_env *env,
4480                           struct dt_it *di, const struct dt_key *key)
4481 {
4482         struct osd_thread_info  *oti = osd_oti_get(env);
4483         struct osd_it_iam       *it = (struct osd_it_iam *)di;
4484
4485         if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4486                 /* swab quota uid/gid */
4487                 oti->oti_quota_id = cpu_to_le64(*((__u64 *)key));
4488                 key = (struct dt_key *)&oti->oti_quota_id;
4489         }
4490
4491         return iam_it_get(&it->oi_it, (const struct iam_key *)key);
4492 }
4493
4494 /**
4495  *  Release Iterator
4496  *
4497  *  \param  di      osd iterator
4498  */
4499 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
4500 {
4501         struct osd_it_iam *it = (struct osd_it_iam *)di;
4502
4503         iam_it_put(&it->oi_it);
4504 }
4505
4506 /**
4507  *  Move iterator by one record
4508  *
4509  *  \param  di      osd iterator
4510  *
4511  *  \retval +1   end of container reached
4512  *  \retval  0   success
4513  *  \retval -ve  failure
4514  */
4515
4516 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
4517 {
4518         struct osd_it_iam *it = (struct osd_it_iam *)di;
4519
4520         return iam_it_next(&it->oi_it);
4521 }
4522
4523 /**
4524  * Return pointer to the key under iterator.
4525  */
4526
4527 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
4528                                  const struct dt_it *di)
4529 {
4530         struct osd_thread_info *oti = osd_oti_get(env);
4531         struct osd_it_iam      *it = (struct osd_it_iam *)di;
4532         struct osd_object      *obj = it->oi_obj;
4533         struct dt_key          *key;
4534
4535         key = (struct dt_key *)iam_it_key_get(&it->oi_it);
4536
4537         if (!IS_ERR(key) && fid_is_quota(lu_object_fid(&obj->oo_dt.do_lu))) {
4538                 /* swab quota uid/gid */
4539                 oti->oti_quota_id = le64_to_cpu(*((__u64 *)key));
4540                 key = (struct dt_key *)&oti->oti_quota_id;
4541         }
4542
4543         return key;
4544 }
4545
4546 /**
4547  * Return size of key under iterator (in bytes)
4548  */
4549
4550 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
4551 {
4552         struct osd_it_iam *it = (struct osd_it_iam *)di;
4553
4554         return iam_it_key_size(&it->oi_it);
4555 }
4556
4557 static inline void
4558 osd_it_append_attrs(struct lu_dirent *ent, int len, __u16 type)
4559 {
4560         /* check if file type is required */
4561         if (ent->lde_attrs & LUDA_TYPE) {
4562                 struct luda_type *lt;
4563                 int align = sizeof(*lt) - 1;
4564
4565                 len = (len + align) & ~align;
4566                 lt = (struct luda_type *)(ent->lde_name + len);
4567                 lt->lt_type = cpu_to_le16(DTTOIF(type));
4568         }
4569
4570         ent->lde_attrs = cpu_to_le32(ent->lde_attrs);
4571 }
4572
4573 /**
4574  * build lu direct from backend fs dirent.
4575  */
4576
4577 static inline void
4578 osd_it_pack_dirent(struct lu_dirent *ent, struct lu_fid *fid, __u64 offset,
4579                    char *name, __u16 namelen, __u16 type, __u32 attr)
4580 {
4581         ent->lde_attrs = attr | LUDA_FID;
4582         fid_cpu_to_le(&ent->lde_fid, fid);
4583
4584         ent->lde_hash = cpu_to_le64(offset);
4585         ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr));
4586
4587         strncpy(ent->lde_name, name, namelen);
4588         ent->lde_name[namelen] = '\0';
4589         ent->lde_namelen = cpu_to_le16(namelen);
4590
4591         /* append lustre attributes */
4592         osd_it_append_attrs(ent, namelen, type);
4593 }
4594
4595 /**
4596  * Return pointer to the record under iterator.
4597  */
4598 static int osd_it_iam_rec(const struct lu_env *env,
4599                           const struct dt_it *di,
4600                           struct dt_rec *dtrec, __u32 attr)
4601 {
4602         struct osd_it_iam      *it   = (struct osd_it_iam *)di;
4603         struct osd_thread_info *info = osd_oti_get(env);
4604         ENTRY;
4605
4606         if (S_ISDIR(it->oi_obj->oo_inode->i_mode)) {
4607                 const struct osd_fid_pack *rec;
4608                 struct lu_fid             *fid = &info->oti_fid;
4609                 struct lu_dirent          *lde = (struct lu_dirent *)dtrec;
4610                 char                      *name;
4611                 int                        namelen;
4612                 __u64                      hash;
4613                 int                        rc;
4614
4615                 name = (char *)iam_it_key_get(&it->oi_it);
4616                 if (IS_ERR(name))
4617                         RETURN(PTR_ERR(name));
4618
4619                 namelen = iam_it_key_size(&it->oi_it);
4620
4621                 rec = (const struct osd_fid_pack *)iam_it_rec_get(&it->oi_it);
4622                 if (IS_ERR(rec))
4623                         RETURN(PTR_ERR(rec));
4624
4625                 rc = osd_fid_unpack(fid, rec);
4626                 if (rc)
4627                         RETURN(rc);
4628
4629                 hash = iam_it_store(&it->oi_it);
4630
4631                 /* IAM does not store object type in IAM index (dir) */
4632                 osd_it_pack_dirent(lde, fid, hash, name, namelen,
4633                                    0, LUDA_FID);
4634         } else if (fid_is_quota(lu_object_fid(&it->oi_obj->oo_dt.do_lu))) {
4635                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4636                            (struct iam_rec *)dtrec);
4637                 osd_quota_unpack(it->oi_obj, dtrec);
4638         } else {
4639                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
4640                            (struct iam_rec *)dtrec);
4641         }
4642
4643         RETURN(0);
4644 }
4645
4646 /**
4647  * Returns cookie for current Iterator position.
4648  */
4649 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
4650 {
4651         struct osd_it_iam *it = (struct osd_it_iam *)di;
4652
4653         return iam_it_store(&it->oi_it);
4654 }
4655
4656 /**
4657  * Restore iterator from cookie.
4658  *
4659  * \param  di      osd iterator
4660  * \param  hash    Iterator location cookie
4661  *
4662  * \retval +ve  di points to record with least key not larger than key.
4663  * \retval  0   di points to exact matched key
4664  * \retval -ve  failure
4665  */
4666
4667 static int osd_it_iam_load(const struct lu_env *env,
4668                            const struct dt_it *di, __u64 hash)
4669 {
4670         struct osd_it_iam *it = (struct osd_it_iam *)di;
4671
4672         return iam_it_load(&it->oi_it, hash);
4673 }
4674
4675 static const struct dt_index_operations osd_index_iam_ops = {
4676         .dio_lookup         = osd_index_iam_lookup,
4677         .dio_declare_insert = osd_index_declare_iam_insert,
4678         .dio_insert         = osd_index_iam_insert,
4679         .dio_declare_delete = osd_index_declare_iam_delete,
4680         .dio_delete         = osd_index_iam_delete,
4681         .dio_it     = {
4682                 .init     = osd_it_iam_init,
4683                 .fini     = osd_it_iam_fini,
4684                 .get      = osd_it_iam_get,
4685                 .put      = osd_it_iam_put,
4686                 .next     = osd_it_iam_next,
4687                 .key      = osd_it_iam_key,
4688                 .key_size = osd_it_iam_key_size,
4689                 .rec      = osd_it_iam_rec,
4690                 .store    = osd_it_iam_store,
4691                 .load     = osd_it_iam_load
4692         }
4693 };
4694
4695
4696 /**
4697  * Creates or initializes iterator context.
4698  *
4699  * \retval struct osd_it_ea, iterator structure on success
4700  *
4701  */
4702 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
4703                                     struct dt_object *dt,
4704                                     __u32 attr,
4705                                     struct lustre_capa *capa)
4706 {
4707         struct osd_object       *obj  = osd_dt_obj(dt);
4708         struct osd_thread_info  *info = osd_oti_get(env);
4709         struct osd_it_ea        *it   = &info->oti_it_ea;
4710         struct file             *file = &it->oie_file;
4711         struct lu_object        *lo   = &dt->do_lu;
4712         struct dentry           *obj_dentry = &info->oti_it_dentry;
4713         ENTRY;
4714         LASSERT(lu_object_exists(lo));
4715
4716         obj_dentry->d_inode = obj->oo_inode;
4717         obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
4718         obj_dentry->d_name.hash = 0;
4719
4720         it->oie_rd_dirent       = 0;
4721         it->oie_it_dirent       = 0;
4722         it->oie_dirent          = NULL;
4723         it->oie_buf             = info->oti_it_ea_buf;
4724         it->oie_obj             = obj;
4725
4726         /* Reset the "file" totally to avoid to reuse any old value from
4727          * former readdir handling, the "file->f_pos" should be zero. */
4728         memset(file, 0, sizeof(*file));
4729         /* Only FMODE_64BITHASH or FMODE_32BITHASH should be set, NOT both. */
4730         if (attr & LUDA_64BITHASH)
4731                 file->f_mode    = FMODE_64BITHASH;
4732         else
4733                 file->f_mode    = FMODE_32BITHASH;
4734         file->f_dentry          = obj_dentry;
4735         file->f_mapping         = obj->oo_inode->i_mapping;
4736         file->f_op              = obj->oo_inode->i_fop;
4737         set_file_inode(file, obj->oo_inode);
4738
4739         lu_object_get(lo);
4740         RETURN((struct dt_it *) it);
4741 }
4742
4743 /**
4744  * Destroy or finishes iterator context.
4745  *
4746  * \param di iterator structure to be destroyed
4747  */
4748 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
4749 {
4750         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4751         struct osd_object    *obj  = it->oie_obj;
4752         struct inode       *inode  = obj->oo_inode;
4753
4754         ENTRY;
4755         it->oie_file.f_op->release(inode, &it->oie_file);
4756         lu_object_put(env, &obj->oo_dt.do_lu);
4757         EXIT;
4758 }
4759
4760 /**
4761  * It position the iterator at given key, so that next lookup continues from
4762  * that key Or it is similar to dio_it->load() but based on a key,
4763  * rather than file position.
4764  *
4765  * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
4766  * to the beginning.
4767  *
4768  * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
4769  */
4770 static int osd_it_ea_get(const struct lu_env *env,
4771                          struct dt_it *di, const struct dt_key *key)
4772 {
4773         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
4774
4775         ENTRY;
4776         LASSERT(((const char *)key)[0] == '\0');
4777         it->oie_file.f_pos      = 0;
4778         it->oie_rd_dirent       = 0;
4779         it->oie_it_dirent       = 0;
4780         it->oie_dirent          = NULL;
4781
4782         RETURN(+1);
4783 }
4784
4785 /**
4786  * Does nothing
4787  */
4788 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
4789 {
4790 }
4791
4792 struct osd_filldir_cbs {
4793 #ifdef HAVE_DIR_CONTEXT
4794         struct dir_context ctx;
4795 #endif
4796         struct osd_it_ea  *it;
4797 };
4798 /**
4799  * It is called internally by ->readdir(). It fills the
4800  * iterator's in-memory data structure with required
4801  * information i.e. name, namelen, rec_size etc.
4802  *
4803  * \param buf in which information to be filled in.
4804  * \param name name of the file in given dir
4805  *
4806  * \retval 0 on success
4807  * \retval 1 on buffer full
4808  */
4809 static int osd_ldiskfs_filldir(void *buf, const char *name, int namelen,
4810                                loff_t offset, __u64 ino,
4811                                unsigned d_type)
4812 {
4813         struct osd_it_ea        *it   = ((struct osd_filldir_cbs *)buf)->it;
4814         struct osd_object       *obj  = it->oie_obj;
4815         struct osd_it_ea_dirent *ent  = it->oie_dirent;
4816         struct lu_fid           *fid  = &ent->oied_fid;
4817         struct osd_fid_pack     *rec;
4818         ENTRY;
4819
4820         /* this should never happen */
4821         if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) {
4822                 CERROR("ldiskfs return invalid namelen %d\n", namelen);
4823                 RETURN(-EIO);
4824         }
4825
4826         if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen >
4827             OSD_IT_EA_BUFSIZE)
4828                 RETURN(1);
4829
4830         /* "." is just the object itself. */
4831         if (namelen == 1 && name[0] == '.') {
4832                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4833         } else if (d_type & LDISKFS_DIRENT_LUFID) {
4834                 rec = (struct osd_fid_pack*) (name + namelen + 1);
4835                 if (osd_fid_unpack(fid, rec) != 0)
4836                         fid_zero(fid);
4837         } else {
4838                 fid_zero(fid);
4839         }
4840         d_type &= ~LDISKFS_DIRENT_LUFID;
4841
4842         /* NOT export local root. */
4843         if (unlikely(osd_sb(osd_obj2dev(obj))->s_root->d_inode->i_ino == ino)) {
4844                 ino = obj->oo_inode->i_ino;
4845                 *fid = obj->oo_dt.do_lu.lo_header->loh_fid;
4846         }
4847
4848         ent->oied_ino     = ino;
4849         ent->oied_off     = offset;
4850         ent->oied_namelen = namelen;
4851         ent->oied_type    = d_type;
4852
4853         memcpy(ent->oied_name, name, namelen);
4854
4855         it->oie_rd_dirent++;
4856         it->oie_dirent = (void *) ent + cfs_size_round(sizeof(*ent) + namelen);
4857         RETURN(0);
4858 }
4859
4860 /**
4861  * Calls ->readdir() to load a directory entry at a time
4862  * and stored it in iterator's in-memory data structure.
4863  *
4864  * \param di iterator's in memory structure
4865  *
4866  * \retval   0 on success
4867  * \retval -ve on error
4868  * \retval +1 reach the end of entry
4869  */
4870 static int osd_ldiskfs_it_fill(const struct lu_env *env,
4871                                const struct dt_it *di)
4872 {
4873         struct osd_it_ea   *it    = (struct osd_it_ea *)di;
4874         struct osd_object  *obj   = it->oie_obj;
4875         struct inode       *inode = obj->oo_inode;
4876         struct htree_lock  *hlock = NULL;
4877         struct file        *filp  = &it->oie_file;
4878         int                 rc = 0;
4879         struct osd_filldir_cbs buf = {
4880 #ifdef HAVE_DIR_CONTEXT
4881                 .ctx.actor = osd_ldiskfs_filldir,
4882 #endif
4883                 .it = it
4884         };
4885
4886         ENTRY;
4887         it->oie_dirent = it->oie_buf;
4888         it->oie_rd_dirent = 0;
4889
4890         if (obj->oo_hl_head != NULL) {
4891                 hlock = osd_oti_get(env)->oti_hlock;
4892                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4893                                    inode, LDISKFS_HLOCK_READDIR);
4894         } else {
4895                 down_read(&obj->oo_ext_idx_sem);
4896         }
4897
4898 #ifdef HAVE_DIR_CONTEXT
4899         buf.ctx.pos = filp->f_pos;
4900         rc = inode->i_fop->iterate(filp, &buf.ctx);
4901         filp->f_pos = buf.ctx.pos;
4902 #else
4903         rc = inode->i_fop->readdir(filp, &buf, osd_ldiskfs_filldir);
4904 #endif
4905
4906         if (hlock != NULL)
4907                 ldiskfs_htree_unlock(hlock);
4908         else
4909                 up_read(&obj->oo_ext_idx_sem);
4910
4911         if (it->oie_rd_dirent == 0) {
4912                 /*If it does not get any dirent, it means it has been reached
4913                  *to the end of the dir */
4914                 it->oie_file.f_pos = ldiskfs_get_htree_eof(&it->oie_file);
4915                 if (rc == 0)
4916                         rc = 1;
4917         } else {
4918                 it->oie_dirent = it->oie_buf;
4919                 it->oie_it_dirent = 1;
4920         }
4921
4922         RETURN(rc);
4923 }
4924
4925 /**
4926  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4927  * to load a directory entry at a time and stored it in
4928  * iterator's in-memory data structure.
4929  *
4930  * \param di iterator's in memory structure
4931  *
4932  * \retval +ve iterator reached to end
4933  * \retval   0 iterator not reached to end
4934  * \retval -ve on error
4935  */
4936 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
4937 {
4938         struct osd_it_ea *it = (struct osd_it_ea *)di;
4939         int rc;
4940
4941         ENTRY;
4942
4943         if (it->oie_it_dirent < it->oie_rd_dirent) {
4944                 it->oie_dirent =
4945                         (void *) it->oie_dirent +
4946                         cfs_size_round(sizeof(struct osd_it_ea_dirent) +
4947                                        it->oie_dirent->oied_namelen);
4948                 it->oie_it_dirent++;
4949                 RETURN(0);
4950         } else {
4951                 if (it->oie_file.f_pos == ldiskfs_get_htree_eof(&it->oie_file))
4952                         rc = +1;
4953                 else
4954                         rc = osd_ldiskfs_it_fill(env, di);
4955         }
4956
4957         RETURN(rc);
4958 }
4959
4960 /**
4961  * Returns the key at current position from iterator's in memory structure.
4962  *
4963  * \param di iterator's in memory structure
4964  *
4965  * \retval key i.e. struct dt_key on success
4966  */
4967 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
4968                                     const struct dt_it *di)
4969 {
4970         struct osd_it_ea *it = (struct osd_it_ea *)di;
4971
4972         return (struct dt_key *)it->oie_dirent->oied_name;
4973 }
4974
4975 /**
4976  * Returns the key's size at current position from iterator's in memory structure.
4977  *
4978  * \param di iterator's in memory structure
4979  *
4980  * \retval key_size i.e. struct dt_key on success
4981  */
4982 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
4983 {
4984         struct osd_it_ea *it = (struct osd_it_ea *)di;
4985
4986         return it->oie_dirent->oied_namelen;
4987 }
4988
4989 static int
4990 osd_dirent_update(handle_t *jh, struct super_block *sb,
4991                   struct osd_it_ea_dirent *ent, struct lu_fid *fid,
4992                   struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de)
4993 {
4994         struct osd_fid_pack *rec;
4995         int                  rc;
4996         ENTRY;
4997
4998         LASSERT(de->file_type & LDISKFS_DIRENT_LUFID);
4999         LASSERT(de->rec_len >= de->name_len + sizeof(struct osd_fid_pack));
5000
5001         rc = ldiskfs_journal_get_write_access(jh, bh);
5002         if (rc != 0) {
5003                 CERROR("%.16s: fail to write access for update dirent: "
5004                        "name = %.*s, rc = %d\n",
5005                        LDISKFS_SB(sb)->s_es->s_volume_name,
5006                        ent->oied_namelen, ent->oied_name, rc);
5007                 RETURN(rc);
5008         }
5009
5010         rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
5011         fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
5012         rc = ldiskfs_journal_dirty_metadata(jh, bh);
5013         if (rc != 0)
5014                 CERROR("%.16s: fail to dirty metadata for update dirent: "
5015                        "name = %.*s, rc = %d\n",
5016                        LDISKFS_SB(sb)->s_es->s_volume_name,
5017                        ent->oied_namelen, ent->oied_name, rc);
5018
5019         RETURN(rc);
5020 }
5021
5022 static inline int
5023 osd_dirent_has_space(__u16 reclen, __u16 namelen, unsigned blocksize)
5024 {
5025         if (ldiskfs_rec_len_from_disk(reclen, blocksize) >=
5026             __LDISKFS_DIR_REC_LEN(namelen + 1 + sizeof(struct osd_fid_pack)))
5027                 return 1;
5028         else
5029                 return 0;
5030 }
5031
5032 static inline int
5033 osd_dot_dotdot_has_space(struct ldiskfs_dir_entry_2 *de, int dot_dotdot)
5034 {
5035         LASSERTF(dot_dotdot == 1 || dot_dotdot == 2,
5036                  "dot_dotdot = %d\n", dot_dotdot);
5037
5038         if (LDISKFS_DIR_REC_LEN(de) >=
5039             __LDISKFS_DIR_REC_LEN(dot_dotdot + 1 + sizeof(struct osd_fid_pack)))
5040                 return 1;
5041         else
5042                 return 0;
5043 }
5044
5045 static int
5046 osd_dirent_reinsert(const struct lu_env *env, handle_t *jh,
5047                     struct inode *dir, struct inode *inode,
5048                     struct osd_it_ea_dirent *ent, struct lu_fid *fid,
5049                     struct buffer_head *bh, struct ldiskfs_dir_entry_2 *de,
5050                     struct htree_lock *hlock)
5051 {
5052         struct dentry               *dentry;
5053         struct osd_fid_pack         *rec;
5054         struct ldiskfs_dentry_param *ldp;
5055         int                          rc;
5056         ENTRY;
5057
5058         if (!LDISKFS_HAS_INCOMPAT_FEATURE(inode->i_sb,
5059                                           LDISKFS_FEATURE_INCOMPAT_DIRDATA))
5060                 RETURN(0);
5061
5062         /* There is enough space to hold the FID-in-dirent. */
5063         if (osd_dirent_has_space(de->rec_len, ent->oied_namelen,
5064                                  dir->i_sb->s_blocksize)) {
5065                 rc = ldiskfs_journal_get_write_access(jh, bh);
5066                 if (rc != 0) {
5067                         CERROR("%.16s: fail to write access for reinsert "
5068                                "dirent: name = %.*s, rc = %d\n",
5069                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5070                                ent->oied_namelen, ent->oied_name, rc);
5071                         RETURN(rc);
5072                 }
5073
5074                 de->name[de->name_len] = 0;
5075                 rec = (struct osd_fid_pack *)(de->name + de->name_len + 1);
5076                 rec->fp_len = sizeof(struct lu_fid) + 1;
5077                 fid_cpu_to_be((struct lu_fid *)rec->fp_area, fid);
5078                 de->file_type |= LDISKFS_DIRENT_LUFID;
5079
5080                 rc = ldiskfs_journal_dirty_metadata(jh, bh);
5081                 if (rc != 0)
5082                         CERROR("%.16s: fail to dirty metadata for reinsert "
5083                                "dirent: name = %.*s, rc = %d\n",
5084                                LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5085                                ent->oied_namelen, ent->oied_name, rc);
5086
5087                 RETURN(rc);
5088         }
5089
5090         rc = ldiskfs_delete_entry(jh, dir, de, bh);
5091         if (rc != 0) {
5092                 CERROR("%.16s: fail to delete entry for reinsert dirent: "
5093                        "name = %.*s, rc = %d\n",
5094                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5095                        ent->oied_namelen, ent->oied_name, rc);
5096                 RETURN(rc);
5097         }
5098
5099         dentry = osd_child_dentry_by_inode(env, dir, ent->oied_name,
5100                                            ent->oied_namelen);
5101         ldp = (struct ldiskfs_dentry_param *)osd_oti_get(env)->oti_ldp;
5102         osd_get_ldiskfs_dirent_param(ldp, (const struct dt_rec *)fid);
5103         dentry->d_fsdata = (void *)ldp;
5104         ll_vfs_dq_init(dir);
5105         rc = osd_ldiskfs_add_entry(jh, dentry, inode, hlock);
5106         /* It is too bad, we cannot reinsert the name entry back.
5107          * That means we lose it! */
5108         if (rc != 0)
5109                 CERROR("%.16s: fail to insert entry for reinsert dirent: "
5110                        "name = %.*s, rc = %d\n",
5111                        LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
5112                        ent->oied_namelen, ent->oied_name, rc);
5113
5114         RETURN(rc);
5115 }
5116
5117 static int
5118 osd_dirent_check_repair(const struct lu_env *env, struct osd_object *obj,
5119                         struct osd_it_ea *it, struct lu_fid *fid,
5120                         struct osd_inode_id *id, __u32 *attr)
5121 {
5122         struct osd_thread_info     *info        = osd_oti_get(env);
5123         struct lustre_mdt_attrs    *lma         = &info->oti_mdt_attrs;
5124         struct osd_device          *dev         = osd_obj2dev(obj);
5125         struct super_block         *sb          = osd_sb(dev);
5126         const char                 *devname     =
5127                                         LDISKFS_SB(sb)->s_es->s_volume_name;
5128         struct osd_it_ea_dirent    *ent         = it->oie_dirent;
5129         struct inode               *dir         = obj->oo_inode;
5130         struct htree_lock          *hlock       = NULL;
5131         struct buffer_head         *bh          = NULL;
5132         handle_t                   *jh          = NULL;
5133         struct ldiskfs_dir_entry_2 *de;
5134         struct dentry              *dentry;
5135         struct inode               *inode;
5136         int                         credits;
5137         int                         rc;
5138         int                         dot_dotdot  = 0;
5139         bool                        dirty       = false;
5140         ENTRY;
5141
5142         if (ent->oied_name[0] == '.') {
5143                 if (ent->oied_namelen == 1)
5144                         dot_dotdot = 1;
5145                 else if (ent->oied_namelen == 2 && ent->oied_name[1] == '.')
5146                         dot_dotdot = 2;
5147         }
5148
5149         dentry = osd_child_dentry_get(env, obj, ent->oied_name,
5150                                       ent->oied_namelen);
5151
5152         /* We need to ensure that the name entry is still valid.
5153          * Because it may be removed or renamed by other already.
5154          *
5155          * The unlink or rename operation will start journal before PDO lock,
5156          * so to avoid deadlock, here we need to start journal handle before
5157          * related PDO lock also. But because we do not know whether there
5158          * will be something to be repaired before PDO lock, we just start
5159          * journal without conditions.
5160          *
5161          * We may need to remove the name entry firstly, then insert back.
5162          * One credit is for user quota file update.
5163          * One credit is for group quota file update.
5164          * Two credits are for dirty inode. */
5165         credits = osd_dto_credits_noquota[DTO_INDEX_DELETE] +
5166                   osd_dto_credits_noquota[DTO_INDEX_INSERT] + 1 + 1 + 2;
5167
5168 again:
5169         if (dev->od_dirent_journal) {
5170                 jh = osd_journal_start_sb(sb, LDISKFS_HT_MISC, credits);
5171                 if (IS_ERR(jh)) {
5172                         rc = PTR_ERR(jh);
5173                         CERROR("%.16s: fail to start trans for dirent "
5174                                "check_repair: credits %d, name %.*s, rc %d\n",
5175                                devname, credits, ent->oied_namelen,
5176                                ent->oied_name, rc);
5177                         RETURN(rc);
5178                 }
5179
5180                 if (obj->oo_hl_head != NULL) {
5181                         hlock = osd_oti_get(env)->oti_hlock;
5182                         /* "0" means exclusive lock for the whole directory.
5183                          * We need to prevent others access such name entry
5184                          * during the delete + insert. Neither HLOCK_ADD nor
5185                          * HLOCK_DEL cannot guarantee the atomicity. */
5186                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir, 0);
5187                 } else {
5188                         down_write(&obj->oo_ext_idx_sem);
5189                 }
5190         } else {
5191                 if (obj->oo_hl_head != NULL) {
5192                         hlock = osd_oti_get(env)->oti_hlock;
5193                         ldiskfs_htree_lock(hlock, obj->oo_hl_head, dir,
5194                                            LDISKFS_HLOCK_LOOKUP);
5195                 } else {
5196                         down_read(&obj->oo_ext_idx_sem);
5197                 }
5198         }
5199
5200         bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, hlock);
5201         /* For dot/dotdot entry, if there is not enough space to hold the
5202          * FID-in-dirent, just keep them there. It only happens when the
5203          * device upgraded from 1.8 or restored from MDT file-level backup.
5204          * For the whole directory, only dot/dotdot entry have no FID-in-dirent
5205          * and needs to get FID from LMA when readdir, it will not affect the
5206          * performance much. */
5207         if ((bh == NULL) || (le32_to_cpu(de->inode) != ent->oied_ino) ||
5208             (dot_dotdot != 0 && !osd_dot_dotdot_has_space(de, dot_dotdot))) {
5209                 *attr |= LUDA_IGNORE;
5210                 GOTO(out_journal, rc = 0);
5211         }
5212
5213         osd_id_gen(id, ent->oied_ino, OSD_OII_NOGEN);
5214         inode = osd_iget(info, dev, id);
5215         if (IS_ERR(inode)) {
5216                 rc = PTR_ERR(inode);
5217                 if (rc == -ENOENT || rc == -ESTALE) {
5218                         *attr |= LUDA_IGNORE;
5219                         rc = 0;
5220                 }
5221
5222                 GOTO(out_journal, rc);
5223         }
5224
5225         /* skip the REMOTE_PARENT_DIR. */
5226         if (inode == dev->od_mdt_map->omm_remote_parent->d_inode)
5227                 GOTO(out_inode, rc = 0);
5228
5229         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
5230         if (rc == 0) {
5231                 LASSERT(!(lma->lma_compat & LMAC_NOT_IN_OI));
5232
5233                 if (fid_is_sane(fid)) {
5234                         /* FID-in-dirent is valid. */
5235                         if (lu_fid_eq(fid, &lma->lma_self_fid))
5236                                 GOTO(out_inode, rc = 0);
5237
5238                         /* Do not repair under dryrun mode. */
5239                         if (*attr & LUDA_VERIFY_DRYRUN) {
5240                                 *attr |= LUDA_REPAIR;
5241                                 GOTO(out_inode, rc = 0);
5242                         }
5243
5244                         if (!dev->od_dirent_journal) {
5245                                 iput(inode);
5246                                 brelse(bh);
5247                                 if (hlock != NULL)
5248                                         ldiskfs_htree_unlock(hlock);
5249                                 else
5250                                         up_read(&obj->oo_ext_idx_sem);
5251                                 dev->od_dirent_journal = 1;
5252                                 goto again;
5253                         }
5254
5255                         *fid = lma->lma_self_fid;
5256                         dirty = true;
5257                         /* Update the FID-in-dirent. */
5258                         rc = osd_dirent_update(jh, sb, ent, fid, bh, de);
5259                         if (rc == 0)
5260                                 *attr |= LUDA_REPAIR;
5261                 } else {
5262                         /* Do not repair under dryrun mode. */
5263                         if (*attr & LUDA_VERIFY_DRYRUN) {
5264                                 *fid = lma->lma_self_fid;
5265                                 *attr |= LUDA_REPAIR;
5266                                 GOTO(out_inode, rc = 0);
5267                         }
5268
5269                         if (!dev->od_dirent_journal) {
5270                                 iput(inode);
5271                                 brelse(bh);
5272                                 if (hlock != NULL)
5273                                         ldiskfs_htree_unlock(hlock);
5274                                 else
5275                                         up_read(&obj->oo_ext_idx_sem);
5276                                 dev->od_dirent_journal = 1;
5277                                 goto again;
5278                         }
5279
5280                         *fid = lma->lma_self_fid;
5281                         dirty = true;
5282                         /* Append the FID-in-dirent. */
5283                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
5284                                                  fid, bh, de, hlock);
5285                         if (rc == 0)
5286                                 *attr |= LUDA_REPAIR;
5287                 }
5288         } else if (rc == -ENODATA) {
5289                 /* Do not repair under dryrun mode. */
5290                 if (*attr & LUDA_VERIFY_DRYRUN) {
5291                         if (fid_is_sane(fid)) {
5292                                 *attr |= LUDA_REPAIR;
5293                         } else {
5294                                 lu_igif_build(fid, inode->i_ino,
5295                                               inode->i_generation);
5296                                 *attr |= LUDA_UPGRADE;
5297                         }
5298                         GOTO(out_inode, rc = 0);
5299                 }
5300
5301                 if (!dev->od_dirent_journal) {
5302                         iput(inode);
5303                         brelse(bh);
5304                         if (hlock != NULL)
5305                                 ldiskfs_htree_unlock(hlock);
5306                         else
5307                                 up_read(&obj->oo_ext_idx_sem);
5308                         dev->od_dirent_journal = 1;
5309                         goto again;
5310                 }
5311
5312                 dirty = true;
5313                 if (unlikely(fid_is_sane(fid))) {
5314                         /* FID-in-dirent exists, but FID-in-LMA is lost.
5315                          * Trust the FID-in-dirent, and add FID-in-LMA. */
5316                         rc = osd_ea_fid_set(info, inode, fid, 0, 0);
5317                         if (rc == 0)
5318                                 *attr |= LUDA_REPAIR;
5319                 } else {
5320                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
5321                         /* It is probably IGIF object. Only aappend the
5322                          * FID-in-dirent. OI scrub will process FID-in-LMA. */
5323                         rc = osd_dirent_reinsert(env, jh, dir, inode, ent,
5324                                                  fid, bh, de, hlock);
5325                         if (rc == 0)
5326                                 *attr |= LUDA_UPGRADE;
5327                 }
5328         }
5329
5330         GOTO(out_inode, rc);
5331
5332 out_inode:
5333         iput(inode);
5334
5335 out_journal:
5336         brelse(bh);
5337         if (hlock != NULL) {
5338                 ldiskfs_htree_unlock(hlock);
5339         } else {
5340                 if (dev->od_dirent_journal)
5341                         up_write(&obj->oo_ext_idx_sem);
5342                 else
5343                         up_read(&obj->oo_ext_idx_sem);
5344         }
5345         if (jh != NULL)
5346                 ldiskfs_journal_stop(jh);
5347         if (rc >= 0 && !dirty)
5348                 dev->od_dirent_journal = 0;
5349         return rc;
5350 }
5351
5352 /**
5353  * Returns the value at current position from iterator's in memory structure.
5354  *
5355  * \param di struct osd_it_ea, iterator's in memory structure
5356  * \param attr attr requested for dirent.
5357  * \param lde lustre dirent
5358  *
5359  * \retval   0 no error and \param lde has correct lustre dirent.
5360  * \retval -ve on error
5361  */
5362 static inline int osd_it_ea_rec(const struct lu_env *env,
5363                                 const struct dt_it *di,
5364                                 struct dt_rec *dtrec, __u32 attr)
5365 {
5366         struct osd_it_ea       *it    = (struct osd_it_ea *)di;
5367         struct osd_object      *obj   = it->oie_obj;
5368         struct osd_device      *dev   = osd_obj2dev(obj);
5369         struct osd_scrub       *scrub = &dev->od_scrub;
5370         struct scrub_file      *sf    = &scrub->os_file;
5371         struct osd_thread_info *oti   = osd_oti_get(env);
5372         struct osd_inode_id    *id    = &oti->oti_id;
5373         struct osd_idmap_cache *oic   = &oti->oti_cache;
5374         struct lu_fid          *fid   = &it->oie_dirent->oied_fid;
5375         struct lu_dirent       *lde   = (struct lu_dirent *)dtrec;
5376         __u32                   ino   = it->oie_dirent->oied_ino;
5377         int                     rc    = 0;
5378         ENTRY;
5379
5380         if (attr & LUDA_VERIFY) {
5381                 attr |= LUDA_TYPE;
5382                 if (unlikely(ino == osd_sb(dev)->s_root->d_inode->i_ino)) {
5383                         attr |= LUDA_IGNORE;
5384                         rc = 0;
5385                 } else {
5386                         rc = osd_dirent_check_repair(env, obj, it, fid, id,
5387                                                      &attr);
5388                 }
5389         } else {
5390                 attr &= ~LU_DIRENT_ATTRS_MASK;
5391                 if (!fid_is_sane(fid)) {
5392                         if (OBD_FAIL_CHECK(OBD_FAIL_FID_LOOKUP) &&
5393                             likely(it->oie_dirent->oied_namelen != 2 ||
5394                                    it->oie_dirent->oied_name[0] != '.' ||
5395                                    it->oie_dirent->oied_name[1] != '.'))
5396                                 RETURN(-ENOENT);
5397
5398                         rc = osd_ea_fid_get(env, obj, ino, fid, id);
5399                 } else {
5400                         osd_id_gen(id, ino, OSD_OII_NOGEN);
5401                 }
5402         }
5403
5404         /* Pack the entry anyway, at least the offset is right. */
5405         osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off,
5406                            it->oie_dirent->oied_name,
5407                            it->oie_dirent->oied_namelen,
5408                            it->oie_dirent->oied_type, attr);
5409
5410         if (rc < 0)
5411                 RETURN(rc);
5412
5413         if (osd_remote_fid(env, dev, fid))
5414                 RETURN(0);
5415
5416         if (likely(!(attr & LUDA_IGNORE)))
5417                 rc = osd_add_oi_cache(oti, dev, id, fid);
5418
5419         if (!(attr & LUDA_VERIFY) &&
5420             (scrub->os_pos_current <= ino) &&
5421             ((sf->sf_flags & SF_INCONSISTENT) ||
5422              (sf->sf_flags & SF_UPGRADE && fid_is_igif(fid)) ||
5423              ldiskfs_test_bit(osd_oi_fid2idx(dev, fid), sf->sf_oi_bitmap)))
5424                 osd_consistency_check(oti, dev, oic);
5425
5426         RETURN(rc);
5427 }
5428
5429 /**
5430  * Returns the record size size at current position.
5431  *
5432  * This function will return record(lu_dirent) size in bytes.
5433  *
5434  * \param[in] env       execution environment
5435  * \param[in] di        iterator's in memory structure
5436  * \param[in] attr      attribute of the entry, only requires LUDA_TYPE to
5437  *                      calculate the lu_dirent size.
5438  *
5439  * \retval      record size(in bytes & in memory) of the current lu_dirent
5440  *              entry.
5441  */
5442 static int osd_it_ea_rec_size(const struct lu_env *env, const struct dt_it *di,
5443                               __u32 attr)
5444 {
5445         struct osd_it_ea *it = (struct osd_it_ea *)di;
5446
5447         return lu_dirent_calc_size(it->oie_dirent->oied_namelen, attr);
5448 }
5449
5450 /**
5451  * Returns a cookie for current position of the iterator head, so that
5452  * user can use this cookie to load/start the iterator next time.
5453  *
5454  * \param di iterator's in memory structure
5455  *
5456  * \retval cookie for current position, on success
5457  */
5458 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
5459 {
5460         struct osd_it_ea *it = (struct osd_it_ea *)di;
5461
5462         return it->oie_dirent->oied_off;
5463 }
5464
5465 /**
5466  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
5467  * to load a directory entry at a time and stored it i inn,
5468  * in iterator's in-memory data structure.
5469  *
5470  * \param di struct osd_it_ea, iterator's in memory structure
5471  *
5472  * \retval +ve on success
5473  * \retval -ve on error
5474  */
5475 static int osd_it_ea_load(const struct lu_env *env,
5476                           const struct dt_it *di, __u64 hash)
5477 {
5478         struct osd_it_ea *it = (struct osd_it_ea *)di;
5479         int rc;
5480
5481         ENTRY;
5482         it->oie_file.f_pos = hash;
5483
5484         rc =  osd_ldiskfs_it_fill(env, di);
5485         if (rc > 0)
5486                 rc = -ENODATA;
5487
5488         if (rc == 0)
5489                 rc = +1;
5490
5491         RETURN(rc);
5492 }
5493
5494 /**
5495  * Index lookup function for interoperability mode (b11826).
5496  *
5497  * \param key,  key i.e. file name to be searched
5498  *
5499  * \retval +ve, on success
5500  * \retval -ve, on error
5501  */
5502 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
5503                                struct dt_rec *rec, const struct dt_key *key,
5504                                struct lustre_capa *capa)
5505 {
5506         struct osd_object *obj = osd_dt_obj(dt);
5507         int rc = 0;
5508
5509         ENTRY;
5510
5511         LASSERT(S_ISDIR(obj->oo_inode->i_mode));
5512         LINVRNT(osd_invariant(obj));
5513
5514         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
5515                 return -EACCES;
5516
5517         rc = osd_ea_lookup_rec(env, obj, rec, key);
5518         if (rc == 0)
5519                 rc = +1;
5520         RETURN(rc);
5521 }
5522
5523 /**
5524  * Index and Iterator operations for interoperability
5525  * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
5526  */
5527 static const struct dt_index_operations osd_index_ea_ops = {
5528         .dio_lookup         = osd_index_ea_lookup,
5529         .dio_declare_insert = osd_index_declare_ea_insert,
5530         .dio_insert         = osd_index_ea_insert,
5531         .dio_declare_delete = osd_index_declare_ea_delete,
5532         .dio_delete         = osd_index_ea_delete,
5533         .dio_it     = {
5534                 .init     = osd_it_ea_init,
5535                 .fini     = osd_it_ea_fini,
5536                 .get      = osd_it_ea_get,
5537                 .put      = osd_it_ea_put,
5538                 .next     = osd_it_ea_next,
5539                 .key      = osd_it_ea_key,
5540                 .key_size = osd_it_ea_key_size,
5541                 .rec      = osd_it_ea_rec,
5542                 .rec_size = osd_it_ea_rec_size,
5543                 .store    = osd_it_ea_store,
5544                 .load     = osd_it_ea_load
5545         }
5546 };
5547
5548 static void *osd_key_init(const struct lu_context *ctx,
5549                           struct lu_context_key *key)
5550 {
5551         struct osd_thread_info *info;
5552
5553         OBD_ALLOC_PTR(info);
5554         if (info == NULL)
5555                 return ERR_PTR(-ENOMEM);
5556
5557         OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5558         if (info->oti_it_ea_buf == NULL)
5559                 goto out_free_info;
5560
5561         info->oti_env = container_of(ctx, struct lu_env, le_ctx);
5562
5563         info->oti_hlock = ldiskfs_htree_lock_alloc();
5564         if (info->oti_hlock == NULL)
5565                 goto out_free_ea;
5566
5567         return info;
5568
5569  out_free_ea:
5570         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5571  out_free_info:
5572         OBD_FREE_PTR(info);
5573         return ERR_PTR(-ENOMEM);
5574 }
5575
5576 static void osd_key_fini(const struct lu_context *ctx,
5577                          struct lu_context_key *key, void* data)
5578 {
5579         struct osd_thread_info *info = data;
5580
5581         if (info->oti_hlock != NULL)
5582                 ldiskfs_htree_lock_free(info->oti_hlock);
5583         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
5584         lu_buf_free(&info->oti_iobuf.dr_pg_buf);
5585         lu_buf_free(&info->oti_iobuf.dr_bl_buf);
5586         OBD_FREE_PTR(info);
5587 }
5588
5589 static void osd_key_exit(const struct lu_context *ctx,
5590                          struct lu_context_key *key, void *data)
5591 {
5592         struct osd_thread_info *info = data;
5593
5594         LASSERT(info->oti_r_locks == 0);
5595         LASSERT(info->oti_w_locks == 0);
5596         LASSERT(info->oti_txns    == 0);
5597 }
5598
5599 /* type constructor/destructor: osd_type_init, osd_type_fini */
5600 LU_TYPE_INIT_FINI(osd, &osd_key);
5601
5602 struct lu_context_key osd_key = {
5603         .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
5604         .lct_init = osd_key_init,
5605         .lct_fini = osd_key_fini,
5606         .lct_exit = osd_key_exit
5607 };
5608
5609
5610 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
5611                            const char *name, struct lu_device *next)
5612 {
5613         struct osd_device *osd = osd_dev(d);
5614
5615         if (strlcpy(osd->od_svname, name, sizeof(osd->od_svname))
5616             >= sizeof(osd->od_svname))
5617                 return -E2BIG;
5618         return osd_procfs_init(osd, name);
5619 }
5620
5621 static int osd_fid_init(const struct lu_env *env, struct osd_device *osd)
5622 {
5623         struct seq_server_site  *ss = osd_seq_site(osd);
5624         int                     rc;
5625         ENTRY;
5626
5627         if (osd->od_is_ost || osd->od_cl_seq != NULL)
5628                 RETURN(0);
5629
5630         if (unlikely(ss == NULL))
5631                 RETURN(-ENODEV);
5632
5633         OBD_ALLOC_PTR(osd->od_cl_seq);
5634         if (osd->od_cl_seq == NULL)
5635                 RETURN(-ENOMEM);
5636
5637         rc = seq_client_init(osd->od_cl_seq, NULL, LUSTRE_SEQ_METADATA,
5638                              osd->od_svname, ss->ss_server_seq);
5639
5640         if (rc != 0) {
5641                 OBD_FREE_PTR(osd->od_cl_seq);
5642                 osd->od_cl_seq = NULL;
5643         }
5644
5645         RETURN(rc);
5646 }
5647
5648 static void osd_fid_fini(const struct lu_env *env, struct osd_device *osd)
5649 {
5650         if (osd->od_cl_seq == NULL)
5651                 return;
5652
5653         seq_client_fini(osd->od_cl_seq);
5654         OBD_FREE_PTR(osd->od_cl_seq);
5655         osd->od_cl_seq = NULL;
5656 }
5657
5658 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
5659 {
5660         ENTRY;
5661
5662         /* shutdown quota slave instance associated with the device */
5663         if (o->od_quota_slave != NULL) {
5664                 qsd_fini(env, o->od_quota_slave);
5665                 o->od_quota_slave = NULL;
5666         }
5667
5668         osd_fid_fini(env, o);
5669
5670         RETURN(0);
5671 }
5672
5673 static void osd_umount(const struct lu_env *env, struct osd_device *o)
5674 {
5675         ENTRY;
5676
5677         if (o->od_mnt != NULL) {
5678                 shrink_dcache_sb(osd_sb(o));
5679                 osd_sync(env, &o->od_dt_dev);
5680
5681                 mntput(o->od_mnt);
5682                 o->od_mnt = NULL;
5683         }
5684
5685         EXIT;
5686 }
5687
5688 static int osd_mount(const struct lu_env *env,
5689                      struct osd_device *o, struct lustre_cfg *cfg)
5690 {
5691         const char              *name  = lustre_cfg_string(cfg, 0);
5692         const char              *dev  = lustre_cfg_string(cfg, 1);
5693         const char              *opts;
5694         unsigned long            page, s_flags, lmd_flags = 0;
5695         struct page             *__page;
5696         struct file_system_type *type;
5697         char                    *options = NULL;
5698         char                    *str;
5699         struct osd_thread_info  *info = osd_oti_get(env);
5700         struct lu_fid           *fid = &info->oti_fid;
5701         struct inode            *inode;
5702         int                      rc = 0;
5703         ENTRY;
5704
5705         if (o->od_mnt != NULL)
5706                 RETURN(0);
5707
5708         if (strlen(dev) >= sizeof(o->od_mntdev))
5709                 RETURN(-E2BIG);
5710         strcpy(o->od_mntdev, dev);
5711
5712         OBD_PAGE_ALLOC(__page, GFP_IOFS);
5713         if (__page == NULL)
5714                 GOTO(out, rc = -ENOMEM);
5715
5716         str = lustre_cfg_string(cfg, 2);
5717         s_flags = simple_strtoul(str, NULL, 0);
5718         str = strstr(str, ":");
5719         if (str)
5720                 lmd_flags = simple_strtoul(str + 1, NULL, 0);
5721         opts = lustre_cfg_string(cfg, 3);
5722         page = (unsigned long)page_address(__page);
5723         options = (char *)page;
5724         *options = '\0';
5725         if (opts == NULL)
5726                 strcat(options, "user_xattr,acl");
5727         else
5728                 strcat(options, opts);
5729
5730         /* Glom up mount options */
5731         if (*options != '\0')
5732                 strcat(options, ",");
5733         strlcat(options, "no_mbcache", PAGE_CACHE_SIZE);
5734
5735         type = get_fs_type("ldiskfs");
5736         if (!type) {
5737                 CERROR("%s: cannot find ldiskfs module\n", name);
5738                 GOTO(out, rc = -ENODEV);
5739         }
5740
5741         o->od_mnt = vfs_kern_mount(type, s_flags, dev, options);
5742         module_put(type->owner);
5743
5744         if (IS_ERR(o->od_mnt)) {
5745                 rc = PTR_ERR(o->od_mnt);
5746                 o->od_mnt = NULL;
5747                 CERROR("%s: can't mount %s: %d\n", name, dev, rc);
5748                 GOTO(out, rc);
5749         }
5750
5751 #ifdef HAVE_DEV_SET_RDONLY
5752         if (dev_check_rdonly(o->od_mnt->mnt_sb->s_bdev)) {
5753                 CERROR("%s: underlying device %s is marked as read-only. "
5754                        "Setup failed\n", name, dev);
5755                 GOTO(out_mnt, rc = -EROFS);
5756         }
5757 #endif
5758
5759         if (!LDISKFS_HAS_COMPAT_FEATURE(o->od_mnt->mnt_sb,
5760                                         LDISKFS_FEATURE_COMPAT_HAS_JOURNAL)) {
5761                 CERROR("%s: device %s is mounted w/o journal\n", name, dev);
5762                 GOTO(out_mnt, rc = -EINVAL);
5763         }
5764
5765 #ifdef LDISKFS_MOUNT_DIRDATA
5766         if (LDISKFS_HAS_INCOMPAT_FEATURE(o->od_mnt->mnt_sb,
5767                                          LDISKFS_FEATURE_INCOMPAT_DIRDATA))
5768                 LDISKFS_SB(osd_sb(o))->s_mount_opt |= LDISKFS_MOUNT_DIRDATA;
5769         else if (!o->od_is_ost)
5770                 CWARN("%s: device %s was upgraded from Lustre-1.x without "
5771                       "enabling the dirdata feature. If you do not want to "
5772                       "downgrade to Lustre-1.x again, you can enable it via "
5773                       "'tune2fs -O dirdata device'\n", name, dev);
5774 #endif
5775         inode = osd_sb(o)->s_root->d_inode;
5776         lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
5777         rc = osd_ea_fid_set(info, inode, fid, LMAC_NOT_IN_OI, 0);
5778         if (rc != 0) {
5779                 CERROR("%s: failed to set lma on %s root inode\n", name, dev);
5780                 GOTO(out_mnt, rc);
5781         }
5782
5783         if (lmd_flags & LMD_FLG_NOSCRUB)
5784                 o->od_noscrub = 1;
5785
5786         GOTO(out, rc = 0);
5787
5788 out_mnt:
5789         mntput(o->od_mnt);
5790         o->od_mnt = NULL;
5791
5792 out:
5793         if (__page)
5794                 OBD_PAGE_FREE(__page);
5795
5796         return rc;
5797 }
5798
5799 static struct lu_device *osd_device_fini(const struct lu_env *env,
5800                                          struct lu_device *d)
5801 {
5802         struct osd_device *o = osd_dev(d);
5803         ENTRY;
5804
5805         osd_shutdown(env, o);
5806         osd_procfs_fini(o);
5807         osd_scrub_cleanup(env, o);
5808         osd_obj_map_fini(o);
5809         osd_umount(env, o);
5810
5811         RETURN(NULL);
5812 }
5813
5814 static int osd_device_init0(const struct lu_env *env,
5815                             struct osd_device *o,
5816                             struct lustre_cfg *cfg)
5817 {
5818         struct lu_device        *l = osd2lu_dev(o);
5819         struct osd_thread_info *info;
5820         int                     rc;
5821         int                     cplen = 0;
5822
5823         /* if the module was re-loaded, env can loose its keys */
5824         rc = lu_env_refill((struct lu_env *) env);
5825         if (rc)
5826                 GOTO(out, rc);
5827         info = osd_oti_get(env);
5828         LASSERT(info);
5829
5830         l->ld_ops = &osd_lu_ops;
5831         o->od_dt_dev.dd_ops = &osd_dt_ops;
5832
5833         spin_lock_init(&o->od_osfs_lock);
5834         mutex_init(&o->od_otable_mutex);
5835
5836         o->od_capa_hash = init_capa_hash();
5837         if (o->od_capa_hash == NULL)
5838                 GOTO(out, rc = -ENOMEM);
5839
5840         o->od_read_cache = 1;
5841         o->od_writethrough_cache = 1;
5842         o->od_readcache_max_filesize = OSD_MAX_CACHE_SIZE;
5843
5844         cplen = strlcpy(o->od_svname, lustre_cfg_string(cfg, 4),
5845                         sizeof(o->od_svname));
5846         if (cplen >= sizeof(o->od_svname)) {
5847                 rc = -E2BIG;
5848                 GOTO(out_capa, rc);
5849         }
5850
5851         if (server_name_is_ost(o->od_svname))
5852                 o->od_is_ost = 1;
5853
5854         rc = osd_mount(env, o, cfg);
5855         if (rc != 0)
5856                 GOTO(out_capa, rc);
5857
5858         rc = osd_obj_map_init(env, o);
5859         if (rc != 0)
5860                 GOTO(out_mnt, rc);
5861
5862         rc = lu_site_init(&o->od_site, l);
5863         if (rc != 0)
5864                 GOTO(out_compat, rc);
5865         o->od_site.ls_bottom_dev = l;
5866
5867         rc = lu_site_init_finish(&o->od_site);
5868         if (rc != 0)
5869                 GOTO(out_site, rc);
5870
5871         /* self-repair LMA by default */
5872         o->od_lma_self_repair = 1;
5873
5874         INIT_LIST_HEAD(&o->od_ios_list);
5875         /* setup scrub, including OI files initialization */
5876         rc = osd_scrub_setup(env, o);
5877         if (rc < 0)
5878                 GOTO(out_site, rc);
5879
5880         rc = osd_procfs_init(o, o->od_svname);
5881         if (rc != 0) {
5882                 CERROR("%s: can't initialize procfs: rc = %d\n",
5883                        o->od_svname, rc);
5884                 GOTO(out_scrub, rc);
5885         }
5886
5887         LASSERT(l->ld_site->ls_linkage.next && l->ld_site->ls_linkage.prev);
5888
5889         /* initialize quota slave instance */
5890         o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
5891                                      o->od_proc_entry);
5892         if (IS_ERR(o->od_quota_slave)) {
5893                 rc = PTR_ERR(o->od_quota_slave);
5894                 o->od_quota_slave = NULL;
5895                 GOTO(out_procfs, rc);
5896         }
5897
5898         RETURN(0);
5899
5900 out_procfs:
5901         osd_procfs_fini(o);
5902 out_scrub:
5903         osd_scrub_cleanup(env, o);
5904 out_site:
5905         lu_site_fini(&o->od_site);
5906 out_compat:
5907         osd_obj_map_fini(o);
5908 out_mnt:
5909         osd_umount(env, o);
5910 out_capa:
5911         cleanup_capa_hash(o->od_capa_hash);
5912 out:
5913         return rc;
5914 }
5915
5916 static struct lu_device *osd_device_alloc(const struct lu_env *env,
5917                                           struct lu_device_type *t,
5918                                           struct lustre_cfg *cfg)
5919 {
5920         struct osd_device *o;
5921         int                rc;
5922
5923         OBD_ALLOC_PTR(o);
5924         if (o == NULL)
5925                 return ERR_PTR(-ENOMEM);
5926
5927         rc = dt_device_init(&o->od_dt_dev, t);
5928         if (rc == 0) {
5929                 /* Because the ctx might be revived in dt_device_init,
5930                  * refill the env here */
5931                 lu_env_refill((struct lu_env *)env);
5932                 rc = osd_device_init0(env, o, cfg);
5933                 if (rc)
5934                         dt_device_fini(&o->od_dt_dev);
5935         }
5936
5937         if (unlikely(rc != 0))
5938                 OBD_FREE_PTR(o);
5939
5940         return rc == 0 ? osd2lu_dev(o) : ERR_PTR(rc);
5941 }
5942
5943 static struct lu_device *osd_device_free(const struct lu_env *env,
5944                                          struct lu_device *d)
5945 {
5946         struct osd_device *o = osd_dev(d);
5947         ENTRY;
5948
5949         cleanup_capa_hash(o->od_capa_hash);
5950         /* XXX: make osd top device in order to release reference */
5951         d->ld_site->ls_top_dev = d;
5952         lu_site_purge(env, d->ld_site, -1);
5953         if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
5954                 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
5955                 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
5956         }
5957         lu_site_fini(&o->od_site);
5958         dt_device_fini(&o->od_dt_dev);
5959         OBD_FREE_PTR(o);
5960         RETURN(NULL);
5961 }
5962
5963 static int osd_process_config(const struct lu_env *env,
5964                               struct lu_device *d, struct lustre_cfg *cfg)
5965 {
5966         struct osd_device               *o = osd_dev(d);
5967         int                             rc;
5968         ENTRY;
5969
5970         switch (cfg->lcfg_command) {
5971         case LCFG_SETUP:
5972                 rc = osd_mount(env, o, cfg);
5973                 break;
5974         case LCFG_CLEANUP:
5975                 lu_dev_del_linkage(d->ld_site, d);
5976                 rc = osd_shutdown(env, o);
5977                 break;
5978         case LCFG_PARAM:
5979                 LASSERT(&o->od_dt_dev);
5980                 rc = class_process_proc_seq_param(PARAM_OSD,
5981                                                   lprocfs_osd_obd_vars,
5982                                                   cfg, &o->od_dt_dev);
5983                 if (rc > 0 || rc == -ENOSYS)
5984                         rc = class_process_proc_seq_param(PARAM_OST,
5985                                                           lprocfs_osd_obd_vars,
5986                                                           cfg, &o->od_dt_dev);
5987                 break;
5988         default:
5989                 rc = -ENOSYS;
5990         }
5991
5992         RETURN(rc);
5993 }
5994
5995 static int osd_recovery_complete(const struct lu_env *env,
5996                                  struct lu_device *d)
5997 {
5998         struct osd_device       *osd = osd_dev(d);
5999         int                      rc = 0;
6000         ENTRY;
6001
6002         if (osd->od_quota_slave == NULL)
6003                 RETURN(0);
6004
6005         /* start qsd instance on recovery completion, this notifies the quota
6006          * slave code that we are about to process new requests now */
6007         rc = qsd_start(env, osd->od_quota_slave);
6008         RETURN(rc);
6009 }
6010
6011 /*
6012  * we use exports to track all osd users
6013  */
6014 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
6015                            struct obd_device *obd, struct obd_uuid *cluuid,
6016                            struct obd_connect_data *data, void *localdata)
6017 {
6018         struct osd_device    *osd = osd_dev(obd->obd_lu_dev);
6019         struct lustre_handle  conn;
6020         int                   rc;
6021         ENTRY;
6022
6023         CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
6024
6025         rc = class_connect(&conn, obd, cluuid);
6026         if (rc)
6027                 RETURN(rc);
6028
6029         *exp = class_conn2export(&conn);
6030
6031         spin_lock(&osd->od_osfs_lock);
6032         osd->od_connects++;
6033         spin_unlock(&osd->od_osfs_lock);
6034
6035         RETURN(0);
6036 }
6037
6038 /*
6039  * once last export (we don't count self-export) disappeared
6040  * osd can be released
6041  */
6042 static int osd_obd_disconnect(struct obd_export *exp)
6043 {
6044         struct obd_device *obd = exp->exp_obd;
6045         struct osd_device *osd = osd_dev(obd->obd_lu_dev);
6046         int                rc, release = 0;
6047         ENTRY;
6048
6049         /* Only disconnect the underlying layers on the final disconnect. */
6050         spin_lock(&osd->od_osfs_lock);
6051         osd->od_connects--;
6052         if (osd->od_connects == 0)
6053                 release = 1;
6054         spin_unlock(&osd->od_osfs_lock);
6055
6056         rc = class_disconnect(exp); /* bz 9811 */
6057
6058         if (rc == 0 && release)
6059                 class_manual_cleanup(obd);
6060         RETURN(rc);
6061 }
6062
6063 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
6064                        struct lu_device *dev)
6065 {
6066         struct osd_device *osd = osd_dev(dev);
6067         int                result = 0;
6068         ENTRY;
6069
6070         if (osd->od_quota_slave != NULL) {
6071                 /* set up quota slave objects */
6072                 result = qsd_prepare(env, osd->od_quota_slave);
6073                 if (result != 0)
6074                         RETURN(result);
6075         }
6076
6077         result = osd_fid_init(env, osd);
6078
6079         RETURN(result);
6080 }
6081
6082 int osd_fid_alloc(const struct lu_env *env, struct obd_export *exp,
6083                   struct lu_fid *fid, struct md_op_data *op_data)
6084 {
6085         struct osd_device *osd = osd_dev(exp->exp_obd->obd_lu_dev);
6086
6087         return seq_client_alloc_fid(env, osd->od_cl_seq, fid);
6088 }
6089
6090 static const struct lu_object_operations osd_lu_obj_ops = {
6091         .loo_object_init      = osd_object_init,
6092         .loo_object_delete    = osd_object_delete,
6093         .loo_object_release   = osd_object_release,
6094         .loo_object_free      = osd_object_free,
6095         .loo_object_print     = osd_object_print,
6096         .loo_object_invariant = osd_object_invariant
6097 };
6098
6099 const struct lu_device_operations osd_lu_ops = {
6100         .ldo_object_alloc      = osd_object_alloc,
6101         .ldo_process_config    = osd_process_config,
6102         .ldo_recovery_complete = osd_recovery_complete,
6103         .ldo_prepare           = osd_prepare,
6104 };
6105
6106 static const struct lu_device_type_operations osd_device_type_ops = {
6107         .ldto_init = osd_type_init,
6108         .ldto_fini = osd_type_fini,
6109
6110         .ldto_start = osd_type_start,
6111         .ldto_stop  = osd_type_stop,
6112
6113         .ldto_device_alloc = osd_device_alloc,
6114         .ldto_device_free  = osd_device_free,
6115
6116         .ldto_device_init    = osd_device_init,
6117         .ldto_device_fini    = osd_device_fini
6118 };
6119
6120 struct lu_device_type osd_device_type = {
6121         .ldt_tags     = LU_DEVICE_DT,
6122         .ldt_name     = LUSTRE_OSD_LDISKFS_NAME,
6123         .ldt_ops      = &osd_device_type_ops,
6124         .ldt_ctx_tags = LCT_LOCAL,
6125 };
6126
6127 /*
6128  * lprocfs legacy support.
6129  */
6130 static struct obd_ops osd_obd_device_ops = {
6131         .o_owner = THIS_MODULE,
6132         .o_connect      = osd_obd_connect,
6133         .o_disconnect   = osd_obd_disconnect,
6134         .o_fid_alloc    = osd_fid_alloc,
6135 };
6136
6137 static int __init osd_mod_init(void)
6138 {
6139         int rc;
6140
6141         osd_oi_mod_init();
6142
6143         rc = lu_kmem_init(ldiskfs_caches);
6144         if (rc)
6145                 return rc;
6146
6147         rc = class_register_type(&osd_obd_device_ops, NULL, true,
6148                                  lprocfs_osd_module_vars,
6149 #ifndef HAVE_ONLY_PROCFS_SEQ
6150                                  NULL,
6151 #endif
6152                                  LUSTRE_OSD_LDISKFS_NAME, &osd_device_type);
6153         if (rc)
6154                 lu_kmem_fini(ldiskfs_caches);
6155         return rc;
6156 }
6157
6158 static void __exit osd_mod_exit(void)
6159 {
6160         class_unregister_type(LUSTRE_OSD_LDISKFS_NAME);
6161         lu_kmem_fini(ldiskfs_caches);
6162 }
6163
6164 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6165 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_LDISKFS_NAME")");
6166 MODULE_LICENSE("GPL");
6167
6168 cfs_module(osd, "0.1.0", osd_mod_init, osd_mod_exit);