lustre/osd-ldiskfs/osd_handler.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Whamcloud, Inc.
  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 /* simple_mkdir() */
  57 #include <lvfs.h>
  58
  59 /*
  60  * struct OBD_{ALLOC,FREE}*()
  61  * OBD_FAIL_CHECK
  62  */
  63 #include <obd_support.h>
  64 /* struct ptlrpc_thread */
  65 #include <lustre_net.h>
  66
  67 /* fid_is_local() */
  68 #include <lustre_fid.h>
  69
  70 #include "osd_internal.h"
  71 #include "osd_igif.h"
  72
  73 /* llo_* api support */
  74 #include <md_object.h>
  75 /* dt_acct_features */
  76 #include <lquota.h>
  77
  78 #ifdef HAVE_LDISKFS_PDO
  79 int ldiskfs_pdo = 1;
  80 CFS_MODULE_PARM(ldiskfs_pdo, "i", int, 0644,
  81                 "ldiskfs with parallel directory operations");
  82 #else
  83 int ldiskfs_pdo = 0;
  84 #endif
  85
  86 static const char dot[] = ".";
  87 static const char dotdot[] = "..";
  88 static const char remote_obj_dir[] = "REM_OBJ_DIR";
  89
  90 static const struct lu_object_operations      osd_lu_obj_ops;
  91 static const struct dt_object_operations      osd_obj_ops;
  92 static const struct dt_object_operations      osd_obj_ea_ops;
  93 static const struct dt_object_operations      osd_obj_otable_it_ops;
  94 static const struct dt_index_operations       osd_index_iam_ops;
  95 static const struct dt_index_operations       osd_index_ea_ops;
  96
  97 static int osd_has_index(const struct osd_object *obj)
  98 {
  99         return obj->oo_dt.do_index_ops != NULL;
 100 }
 101
 102 static int osd_object_invariant(const struct lu_object *l)
 103 {
 104         return osd_invariant(osd_obj(l));
 105 }
 106
 107 #ifdef HAVE_QUOTA_SUPPORT
 108 static inline void
 109 osd_push_ctxt(const struct lu_env *env, struct osd_ctxt *save, bool is_md)
 110 {
 111         struct md_ucred *uc;
 112         struct cred     *tc;
 113
 114         if (!is_md)
 115                 /* OFD support */
 116                 return;
 117
 118         uc = md_ucred(env);
 119
 120         LASSERT(uc != NULL);
 121
 122         save->oc_uid = current_fsuid();
 123         save->oc_gid = current_fsgid();
 124         save->oc_cap = current_cap();
 125         if ((tc = prepare_creds())) {
 126                 tc->fsuid         = uc->mu_fsuid;
 127                 tc->fsgid         = uc->mu_fsgid;
 128                 commit_creds(tc);
 129         }
 130         /* XXX not suboptimal */
 131         cfs_curproc_cap_unpack(uc->mu_cap);
 132 }
 133
 134 static inline void
 135 osd_pop_ctxt(struct osd_ctxt *save, bool is_md)
 136 {
 137         struct cred *tc;
 138
 139         if (!is_md)
 140                 /* OFD support */
 141                 return;
 142
 143         if ((tc = prepare_creds())) {
 144                 tc->fsuid         = save->oc_uid;
 145                 tc->fsgid         = save->oc_gid;
 146                 tc->cap_effective = save->oc_cap;
 147                 commit_creds(tc);
 148         }
 149 }
 150 #endif
 151
 152 /*
 153  * Concurrency: doesn't matter
 154  */
 155 static int osd_read_locked(const struct lu_env *env, struct osd_object *o)
 156 {
 157         return osd_oti_get(env)->oti_r_locks > 0;
 158 }
 159
 160 /*
 161  * Concurrency: doesn't matter
 162  */
 163 static int osd_write_locked(const struct lu_env *env, struct osd_object *o)
 164 {
 165         struct osd_thread_info *oti = osd_oti_get(env);
 166         return oti->oti_w_locks > 0 && o->oo_owner == env;
 167 }
 168
 169 /*
 170  * Concurrency: doesn't access mutable data
 171  */
 172 static int osd_root_get(const struct lu_env *env,
 173                         struct dt_device *dev, struct lu_fid *f)
 174 {
 175         lu_local_obj_fid(f, OSD_FS_ROOT_OID);
 176         return 0;
 177 }
 178
 179 static inline int osd_qid_type(struct osd_thandle *oh, int i)
 180 {
 181         return (oh->ot_id_type & (1 << i)) ? GRPQUOTA : USRQUOTA;
 182 }
 183
 184 static inline void osd_qid_set_type(struct osd_thandle *oh, int i, int type)
 185 {
 186         oh->ot_id_type |= ((type == GRPQUOTA) ? (1 << i) : 0);
 187 }
 188
 189 void osd_declare_qid(struct dt_object *dt, struct osd_thandle *oh,
 190                      int type, uid_t id, struct inode *inode)
 191 {
 192 #ifdef CONFIG_QUOTA
 193         int i, allocated = 0;
 194         struct osd_object *obj;
 195
 196         LASSERT(dt != NULL);
 197         LASSERT(oh != NULL);
 198         LASSERTF(oh->ot_id_cnt <= OSD_MAX_UGID_CNT, "count=%u",
 199                  oh->ot_id_cnt);
 200
 201         /* id entry is allocated in the quota file */
 202         if (inode && inode->i_dquot[type] && inode->i_dquot[type]->dq_off)
 203                 allocated = 1;
 204
 205         for (i = 0; i < oh->ot_id_cnt; i++) {
 206                 if (oh->ot_id_array[i] == id && osd_qid_type(oh, i) == type)
 207                         return;
 208         }
 209
 210         if (unlikely(i >= OSD_MAX_UGID_CNT)) {
 211                 CERROR("more than %d uid/gids for a transaction?\n", i);
 212                 return;
 213         }
 214
 215         oh->ot_id_array[i] = id;
 216         osd_qid_set_type(oh, i, type);
 217         oh->ot_id_cnt++;
 218         obj = osd_dt_obj(dt);
 219         oh->ot_credits += (allocated || id == 0) ?
 220                 1 : LDISKFS_QUOTA_INIT_BLOCKS(osd_sb(osd_obj2dev(obj)));
 221 #endif
 222 }
 223
 224 /*
 225  * OSD object methods.
 226  */
 227
 228 /*
 229  * Concurrency: no concurrent access is possible that early in object
 230  * life-cycle.
 231  */
 232 static struct lu_object *osd_object_alloc(const struct lu_env *env,
 233                                           const struct lu_object_header *hdr,
 234                                           struct lu_device *d)
 235 {
 236         struct osd_object *mo;
 237
 238         OBD_ALLOC_PTR(mo);
 239         if (mo != NULL) {
 240                 struct lu_object *l;
 241
 242                 l = &mo->oo_dt.do_lu;
 243                 dt_object_init(&mo->oo_dt, NULL, d);
 244                 if (osd_dev(d)->od_iop_mode)
 245                         mo->oo_dt.do_ops = &osd_obj_ea_ops;
 246                 else
 247                         mo->oo_dt.do_ops = &osd_obj_ops;
 248
 249                 l->lo_ops = &osd_lu_obj_ops;
 250                 cfs_init_rwsem(&mo->oo_sem);
 251                 cfs_init_rwsem(&mo->oo_ext_idx_sem);
 252                 cfs_spin_lock_init(&mo->oo_guard);
 253                 return l;
 254         } else {
 255                 return NULL;
 256         }
 257 }
 258
 259 static int osd_get_lma(struct inode *inode, struct dentry *dentry,
 260                        struct lustre_mdt_attrs *lma)
 261 {
 262         int rc;
 263
 264         dentry->d_inode = inode;
 265         rc = inode->i_op->getxattr(dentry, XATTR_NAME_LMA, (void *)lma,
 266                                    sizeof(*lma));
 267         if (rc > 0) {
 268                 /* Check LMA compatibility */
 269                 if (lma->lma_incompat & ~cpu_to_le32(LMA_INCOMPAT_SUPP)) {
 270                         CWARN("%.16s: unsupported incompat LMA feature(s) "
 271                               "%lx/%#x\n",
 272                               LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
 273                               inode->i_ino, le32_to_cpu(lma->lma_incompat) &
 274                                                         ~LMA_INCOMPAT_SUPP);
 275                         rc = -ENOSYS;
 276                 } else {
 277                         lustre_lma_swab(lma);
 278                         rc = 0;
 279                 }
 280         } else if (rc == 0) {
 281                 rc = -ENODATA;
 282         }
 283
 284         return rc;
 285 }
 286
 287 /*
 288  * retrieve object from backend ext fs.
 289  **/
 290 struct inode *osd_iget(struct osd_thread_info *info, struct osd_device *dev,
 291                        struct osd_inode_id *id)
 292 {
 293         struct inode *inode = NULL;
 294
 295         inode = ldiskfs_iget(osd_sb(dev), id->oii_ino);
 296         if (IS_ERR(inode)) {
 297                 CDEBUG(D_INODE, "no inode: ino = %u, rc = %ld\n",
 298                        id->oii_ino, PTR_ERR(inode));
 299         } else if (id->oii_gen != OSD_OII_NOGEN &&
 300                    inode->i_generation != id->oii_gen) {
 301                 CDEBUG(D_INODE, "unmatched inode: ino = %u, gen0 = %u, "
 302                        "gen1 = %u\n",
 303                        id->oii_ino, id->oii_gen, inode->i_generation);
 304                 iput(inode);
 305                 inode = ERR_PTR(-ESTALE);
 306         } else if (inode->i_nlink == 0) {
 307                 /* due to parallel readdir and unlink,
 308                 * we can have dead inode here. */
 309                 CDEBUG(D_INODE, "stale inode: ino = %u\n", id->oii_ino);
 310                 make_bad_inode(inode);
 311                 iput(inode);
 312                 inode = ERR_PTR(-ESTALE);
 313         } else if (is_bad_inode(inode)) {
 314                 CWARN("%.16s: bad inode: ino = %u\n",
 315                 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, id->oii_ino);
 316                 iput(inode);
 317                 inode = ERR_PTR(-ENOENT);
 318         } else {
 319                 if (id->oii_gen == OSD_OII_NOGEN)
 320                         osd_id_gen(id, inode->i_ino, inode->i_generation);
 321
 322                 /* Do not update file c/mtime in ldiskfs.
 323                  * NB: we don't have any lock to protect this because we don't
 324                  * have reference on osd_object now, but contention with
 325                  * another lookup + attr_set can't happen in the tiny window
 326                  * between if (...) and set S_NOCMTIME. */
 327                 if (!(inode->i_flags & S_NOCMTIME))
 328                         inode->i_flags |= S_NOCMTIME;
 329         }
 330         return inode;
 331 }
 332
 333 struct inode *osd_iget_fid(struct osd_thread_info *info, struct osd_device *dev,
 334                            struct osd_inode_id *id, struct lu_fid *fid)
 335 {
 336         struct lustre_mdt_attrs *lma   = &info->oti_mdt_attrs;
 337         struct inode            *inode;
 338         int                      rc;
 339
 340         inode = osd_iget(info, dev, id);
 341         if (IS_ERR(inode))
 342                 return inode;
 343
 344         rc = osd_get_lma(inode, &info->oti_obj_dentry, lma);
 345         if (rc == 0) {
 346                 *fid = lma->lma_self_fid;
 347         } else if (rc == -ENODATA) {
 348                 LU_IGIF_BUILD(fid, inode->i_ino, inode->i_generation);
 349         } else {
 350                 iput(inode);
 351                 inode = ERR_PTR(rc);
 352         }
 353         return inode;
 354 }
 355
 356 static struct inode *
 357 osd_iget_verify(struct osd_thread_info *info, struct osd_device *dev,
 358                 struct osd_inode_id *id, const struct lu_fid *fid)
 359 {
 360         struct lustre_mdt_attrs *lma   = &info->oti_mdt_attrs;
 361         struct inode            *inode;
 362         int                      rc;
 363
 364         inode = osd_iget(info, dev, id);
 365         if (IS_ERR(inode))
 366                 return inode;
 367
 368         rc = osd_get_lma(inode, &info->oti_obj_dentry, lma);
 369         if (rc != 0) {
 370                 if (rc == -ENODATA) {
 371                         CDEBUG(D_LFSCK, "inconsistent obj: NULL, %lu, "DFID"\n",
 372                                inode->i_ino, PFID(fid));
 373                         rc = -EREMCHG;
 374                 }
 375                 iput(inode);
 376                 return ERR_PTR(rc);
 377         }
 378
 379         if (!lu_fid_eq(fid, &lma->lma_self_fid)) {
 380                 CDEBUG(D_LFSCK, "inconsistent obj: "DFID", %lu, "DFID"\n",
 381                        PFID(&lma->lma_self_fid), inode->i_ino, PFID(fid));
 382                 iput(inode);
 383                 return ERR_PTR(EREMCHG);
 384         }
 385         return inode;
 386 }
 387
 388 static int osd_fid_lookup(const struct lu_env *env, struct osd_object *obj,
 389                           const struct lu_fid *fid,
 390                           const struct lu_object_conf *conf)
 391 {
 392         struct osd_thread_info *info;
 393         struct lu_device       *ldev   = obj->oo_dt.do_lu.lo_dev;
 394         struct osd_device      *dev;
 395         struct osd_idmap_cache *oic;
 396         struct osd_inode_id    *id;
 397         struct inode           *inode;
 398         struct osd_scrub       *scrub;
 399         struct scrub_file      *sf;
 400         int                     result;
 401         int                     verify = 0;
 402         ENTRY;
 403
 404         LINVRNT(osd_invariant(obj));
 405         LASSERT(obj->oo_inode == NULL);
 406         LASSERTF(fid_is_sane(fid) || fid_is_idif(fid), DFID, PFID(fid));
 407
 408         dev = osd_dev(ldev);
 409         scrub = &dev->od_scrub;
 410         sf = &scrub->os_file;
 411         info = osd_oti_get(env);
 412         LASSERT(info);
 413         oic = &info->oti_cache;
 414         id  = &oic->oic_lid;
 415
 416         if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
 417                 RETURN(-ENOENT);
 418
 419         if (fid_is_norm(fid)) {
 420                 /* Search order: 1. per-thread cache. */
 421                 if (lu_fid_eq(fid, &oic->oic_fid)) {
 422                         goto iget;
 423                 } else if (!cfs_list_empty(&scrub->os_inconsistent_items)) {
 424                         /* Search order: 2. OI scrub pending list. */
 425                         result = osd_oii_lookup(dev, fid, id);
 426                         if (result == 0)
 427                                 goto iget;
 428                 }
 429
 430                 if (sf->sf_flags & SF_INCONSISTENT)
 431                         verify = 1;
 432         }
 433
 434         fid_zero(&oic->oic_fid);
 435
 436         /*
 437          * Objects are created as locking anchors or place holders for objects
 438          * yet to be created. No need to osd_oi_lookup() at here because FID
 439          * shouldn't never be re-used, if it's really a duplicate FID from
 440          * unexpected reason, we should be able to detect it later by calling
 441          * do_create->osd_oi_insert()
 442          */
 443         if (conf != NULL && (conf->loc_flags & LOC_F_NEW) != 0)
 444                 GOTO(out, result = 0);
 445
 446         /* Search order: 3. OI files. */
 447         result = osd_oi_lookup(info, dev, fid, id);
 448         if (result == -ENOENT) {
 449                 if (!fid_is_norm(fid) ||
 450                     !ldiskfs_test_bit(osd_oi_fid2idx(dev,fid),
 451                                       sf->sf_oi_bitmap))
 452                         GOTO(out, result = 0);
 453
 454                 goto trigger;
 455         }
 456
 457         if (result != 0)
 458                 GOTO(out, result);
 459
 460 iget:
 461         if (verify == 0)
 462                 inode = osd_iget(info, dev, id);
 463         else
 464                 inode = osd_iget_verify(info, dev, id, fid);
 465         if (IS_ERR(inode)) {
 466                 result = PTR_ERR(inode);
 467                 if (result == -ENOENT || result == -ESTALE) {
 468                         result = 0;
 469                 } else if (result == -EREMCHG) {
 470
 471 trigger:
 472                         if (thread_is_running(&scrub->os_thread)) {
 473                                 result = -EINPROGRESS;
 474                         } else if (!scrub->os_no_scrub) {
 475                                 result = osd_scrub_start(dev);
 476                                 LCONSOLE_ERROR("%.16s: trigger OI scrub by RPC "
 477                                                "for "DFID", rc = %d [1]\n",
 478                                                LDISKFS_SB(osd_sb(dev))->s_es->\
 479                                                s_volume_name,PFID(fid), result);
 480                                 if (result == 0 || result == -EALREADY)
 481                                         result = -EINPROGRESS;
 482                                 else
 483                                         result = -EREMCHG;
 484                         }
 485                 }
 486
 487                 GOTO(out, result);
 488         }
 489
 490         obj->oo_inode = inode;
 491         LASSERT(obj->oo_inode->i_sb == osd_sb(dev));
 492         if (dev->od_iop_mode) {
 493                 obj->oo_compat_dot_created = 1;
 494                 obj->oo_compat_dotdot_created = 1;
 495         }
 496
 497         if (!S_ISDIR(inode->i_mode) || !ldiskfs_pdo) /* done */
 498                 GOTO(out, result = 0);
 499
 500         LASSERT(obj->oo_hl_head == NULL);
 501         obj->oo_hl_head = ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
 502         if (obj->oo_hl_head == NULL) {
 503                 obj->oo_inode = NULL;
 504                 iput(inode);
 505                 GOTO(out, result = -ENOMEM);
 506         }
 507         GOTO(out, result = 0);
 508
 509 out:
 510         LINVRNT(osd_invariant(obj));
 511         return result;
 512 }
 513
 514 /*
 515  * Concurrency: shouldn't matter.
 516  */
 517 static void osd_object_init0(struct osd_object *obj)
 518 {
 519         LASSERT(obj->oo_inode != NULL);
 520         obj->oo_dt.do_body_ops = &osd_body_ops;
 521         obj->oo_dt.do_lu.lo_header->loh_attr |=
 522                 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
 523 }
 524
 525 /*
 526  * Concurrency: no concurrent access is possible that early in object
 527  * life-cycle.
 528  */
 529 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 530                            const struct lu_object_conf *conf)
 531 {
 532         struct osd_object *obj = osd_obj(l);
 533         int result;
 534
 535         LINVRNT(osd_invariant(obj));
 536
 537         result = osd_fid_lookup(env, obj, lu_object_fid(l), conf);
 538         obj->oo_dt.do_body_ops = &osd_body_ops_new;
 539         if (result == 0) {
 540                 if (obj->oo_inode != NULL) {
 541                         osd_object_init0(obj);
 542                 } else if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 543                         obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 544                         /* LFSCK iterator object is special without inode */
 545                         l->lo_header->loh_attr |= LOHA_EXISTS;
 546                 }
 547         }
 548         LINVRNT(osd_invariant(obj));
 549         return result;
 550 }
 551
 552 /*
 553  * Concurrency: no concurrent access is possible that late in object
 554  * life-cycle.
 555  */
 556 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 557 {
 558         struct osd_object *obj = osd_obj(l);
 559
 560         LINVRNT(osd_invariant(obj));
 561
 562         dt_object_fini(&obj->oo_dt);
 563         if (obj->oo_hl_head != NULL)
 564                 ldiskfs_htree_lock_head_free(obj->oo_hl_head);
 565         OBD_FREE_PTR(obj);
 566 }
 567
 568 /*
 569  * Concurrency: no concurrent access is possible that late in object
 570  * life-cycle.
 571  */
 572 static void osd_index_fini(struct osd_object *o)
 573 {
 574         struct iam_container *bag;
 575
 576         if (o->oo_dir != NULL) {
 577                 bag = &o->oo_dir->od_container;
 578                 if (o->oo_inode != NULL) {
 579                         if (bag->ic_object == o->oo_inode)
 580                                 iam_container_fini(bag);
 581                 }
 582                 OBD_FREE_PTR(o->oo_dir);
 583                 o->oo_dir = NULL;
 584         }
 585 }
 586
 587 /*
 588  * Concurrency: no concurrent access is possible that late in object
 589  * life-cycle (for all existing callers, that is. New callers have to provide
 590  * their own locking.)
 591  */
 592 static int osd_inode_unlinked(const struct inode *inode)
 593 {
 594         return inode->i_nlink == 0;
 595 }
 596
 597 enum {
 598         OSD_TXN_OI_DELETE_CREDITS    = 20,
 599         OSD_TXN_INODE_DELETE_CREDITS = 20
 600 };
 601
 602 /*
 603  * Journal
 604  */
 605
 606 #if OSD_THANDLE_STATS
 607 /**
 608  * Set time when the handle is allocated
 609  */
 610 static void osd_th_alloced(struct osd_thandle *oth)
 611 {
 612         oth->oth_alloced = cfs_time_current();
 613 }
 614
 615 /**
 616  * Set time when the handle started
 617  */
 618 static void osd_th_started(struct osd_thandle *oth)
 619 {
 620         oth->oth_started = cfs_time_current();
 621 }
 622
 623 /**
 624  * Helper function to convert time interval to microseconds packed in
 625  * long int (default time units for the counter in "stats" initialized
 626  * by lu_time_init() )
 627  */
 628 static long interval_to_usec(cfs_time_t start, cfs_time_t end)
 629 {
 630         struct timeval val;
 631
 632         cfs_duration_usec(cfs_time_sub(end, start), &val);
 633         return val.tv_sec * 1000000 + val.tv_usec;
 634 }
 635
 636 /**
 637  * Check whether the we deal with this handle for too long.
 638  */
 639 static void __osd_th_check_slow(void *oth, struct osd_device *dev,
 640                                 cfs_time_t alloced, cfs_time_t started,
 641                                 cfs_time_t closed)
 642 {
 643         cfs_time_t now = cfs_time_current();
 644
 645         LASSERT(dev != NULL);
 646
 647         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_STARTING,
 648                             interval_to_usec(alloced, started));
 649         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_OPEN,
 650                             interval_to_usec(started, closed));
 651         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_CLOSING,
 652                             interval_to_usec(closed, now));
 653
 654         if (cfs_time_before(cfs_time_add(alloced, cfs_time_seconds(30)), now)) {
 655                 CWARN("transaction handle %p was open for too long: "
 656                       "now "CFS_TIME_T" ,"
 657                       "alloced "CFS_TIME_T" ,"
 658                       "started "CFS_TIME_T" ,"
 659                       "closed "CFS_TIME_T"\n",
 660                       oth, now, alloced, started, closed);
 661                 libcfs_debug_dumpstack(NULL);
 662         }
 663 }
 664
 665 #define OSD_CHECK_SLOW_TH(oth, dev, expr)                               \
 666 {                                                                       \
 667         cfs_time_t __closed = cfs_time_current();                       \
 668         cfs_time_t __alloced = oth->oth_alloced;                        \
 669         cfs_time_t __started = oth->oth_started;                        \
 670                                                                         \
 671         expr;                                                           \
 672         __osd_th_check_slow(oth, dev, __alloced, __started, __closed);  \
 673 }
 674
 675 #else /* OSD_THANDLE_STATS */
 676
 677 #define osd_th_alloced(h)                  do {} while(0)
 678 #define osd_th_started(h)                  do {} while(0)
 679 #define OSD_CHECK_SLOW_TH(oth, dev, expr)  expr
 680
 681 #endif /* OSD_THANDLE_STATS */
 682
 683 /*
 684  * Concurrency: doesn't access mutable data.
 685  */
 686 static int osd_param_is_sane(const struct osd_device *dev,
 687                              const struct thandle *th)
 688 {
 689         struct osd_thandle *oh;
 690         oh = container_of0(th, struct osd_thandle, ot_super);
 691         return oh->ot_credits <= osd_journal(dev)->j_max_transaction_buffers;
 692 }
 693
 694 /*
 695  * Concurrency: shouldn't matter.
 696  */
 697 #ifdef HAVE_LDISKFS_JOURNAL_CALLBACK_ADD
 698 static void osd_trans_commit_cb(struct super_block *sb,
 699                                 struct journal_callback *jcb, int error)
 700 #else
 701 static void osd_trans_commit_cb(struct journal_callback *jcb, int error)
 702 #endif
 703 {
 704         struct osd_thandle *oh = container_of0(jcb, struct osd_thandle, ot_jcb);
 705         struct thandle     *th  = &oh->ot_super;
 706         struct lu_device   *lud = &th->th_dev->dd_lu_dev;
 707         struct dt_txn_commit_cb *dcb, *tmp;
 708
 709         LASSERT(oh->ot_handle == NULL);
 710
 711         if (error)
 712                 CERROR("transaction @0x%p commit error: %d\n", th, error);
 713
 714         dt_txn_hook_commit(th);
 715
 716         /* call per-transaction callbacks if any */
 717         cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage) {
 718                 cfs_list_del_init(&dcb->dcb_linkage);
 719                 dcb->dcb_func(NULL, th, dcb, error);
 720         }
 721
 722         lu_ref_del_at(&lud->ld_reference, oh->ot_dev_link, "osd-tx", th);
 723         lu_device_put(lud);
 724         th->th_dev = NULL;
 725
 726         lu_context_exit(&th->th_ctx);
 727         lu_context_fini(&th->th_ctx);
 728         OBD_FREE_PTR(oh);
 729 }
 730
 731 static struct thandle *osd_trans_create(const struct lu_env *env,
 732                                         struct dt_device *d)
 733 {
 734         struct osd_thread_info *oti = osd_oti_get(env);
 735         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
 736         struct osd_thandle     *oh;
 737         struct thandle         *th;
 738         ENTRY;
 739
 740         /* on pending IO in this thread should left from prev. request */
 741         LASSERT(cfs_atomic_read(&iobuf->dr_numreqs) == 0);
 742
 743         th = ERR_PTR(-ENOMEM);
 744         OBD_ALLOC_GFP(oh, sizeof *oh, CFS_ALLOC_IO);
 745         if (oh != NULL) {
 746                 th = &oh->ot_super;
 747                 th->th_dev = d;
 748                 th->th_result = 0;
 749                 th->th_tags = LCT_TX_HANDLE;
 750                 oh->ot_credits = 0;
 751                 oti->oti_dev = osd_dt_dev(d);
 752                 CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
 753                 osd_th_alloced(oh);
 754         }
 755         RETURN(th);
 756 }
 757
 758 /*
 759  * Concurrency: shouldn't matter.
 760  */
 761 int osd_trans_start(const struct lu_env *env, struct dt_device *d,
 762                     struct thandle *th)
 763 {
 764         struct osd_thread_info *oti = osd_oti_get(env);
 765         struct osd_device  *dev = osd_dt_dev(d);
 766         handle_t           *jh;
 767         struct osd_thandle *oh;
 768         int rc;
 769
 770         ENTRY;
 771
 772         LASSERT(current->journal_info == NULL);
 773
 774         oh = container_of0(th, struct osd_thandle, ot_super);
 775         LASSERT(oh != NULL);
 776         LASSERT(oh->ot_handle == NULL);
 777
 778         rc = dt_txn_hook_start(env, d, th);
 779         if (rc != 0)
 780                 GOTO(out, rc);
 781
 782         if (!osd_param_is_sane(dev, th)) {
 783                 CWARN("%.16s: too many transaction credits (%d > %d)\n",
 784                       LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
 785                       oh->ot_credits,
 786                       osd_journal(dev)->j_max_transaction_buffers);
 787                 /* XXX Limit the credits to 'max_transaction_buffers', and
 788                  *     let the underlying filesystem to catch the error if
 789                  *     we really need so many credits.
 790                  *
 791                  *     This should be removed when we can calculate the
 792                  *     credits precisely. */
 793                 oh->ot_credits = osd_journal(dev)->j_max_transaction_buffers;
 794 #ifdef OSD_TRACK_DECLARES
 795                 CERROR("  attr_set: %d, punch: %d, xattr_set: %d,\n",
 796                        oh->ot_declare_attr_set, oh->ot_declare_punch,
 797                        oh->ot_declare_xattr_set);
 798                 CERROR("  create: %d, ref_add: %d, ref_del: %d, write: %d\n",
 799                        oh->ot_declare_create, oh->ot_declare_ref_add,
 800                        oh->ot_declare_ref_del, oh->ot_declare_write);
 801                 CERROR("  insert: %d, delete: %d, destroy: %d\n",
 802                        oh->ot_declare_insert, oh->ot_declare_delete,
 803                        oh->ot_declare_destroy);
 804 #endif
 805         }
 806
 807         /*
 808          * XXX temporary stuff. Some abstraction layer should
 809          * be used.
 810          */
 811         jh = ldiskfs_journal_start_sb(osd_sb(dev), oh->ot_credits);
 812         osd_th_started(oh);
 813         if (!IS_ERR(jh)) {
 814                 oh->ot_handle = jh;
 815                 LASSERT(oti->oti_txns == 0);
 816                 lu_context_init(&th->th_ctx, th->th_tags);
 817                 lu_context_enter(&th->th_ctx);
 818
 819                 lu_device_get(&d->dd_lu_dev);
 820                 oh->ot_dev_link = lu_ref_add(&d->dd_lu_dev.ld_reference,
 821                                              "osd-tx", th);
 822
 823                 /*
 824                  * XXX: current rule is that we first start tx,
 825                  *      then lock object(s), but we can't use
 826                  *      this rule for data (due to locking specifics
 827                  *      in ldiskfs). also in long-term we'd like to
 828                  *      use usually-used (locks;tx) ordering. so,
 829                  *      UGLY thing is that we'll use one ordering for
 830                  *      data (ofd) and reverse ordering for metadata
 831                  *      (mdd). then at some point we'll fix the latter
 832                  */
 833                 if (dev->od_is_md) {
 834                         LASSERT(oti->oti_r_locks == 0);
 835                         LASSERT(oti->oti_w_locks == 0);
 836                 }
 837
 838                 oti->oti_txns++;
 839                 rc = 0;
 840         } else {
 841                 rc = PTR_ERR(jh);
 842         }
 843 out:
 844         RETURN(rc);
 845 }
 846
 847 /*
 848  * Concurrency: shouldn't matter.
 849  */
 850 static int osd_trans_stop(const struct lu_env *env, struct thandle *th)
 851 {
 852         int                     rc = 0;
 853         struct osd_thandle     *oh;
 854         struct osd_thread_info *oti = osd_oti_get(env);
 855         struct osd_iobuf       *iobuf = &oti->oti_iobuf;
 856
 857         ENTRY;
 858
 859         oh = container_of0(th, struct osd_thandle, ot_super);
 860
 861         if (oh->ot_handle != NULL) {
 862                 handle_t *hdl = oh->ot_handle;
 863
 864                 hdl->h_sync = th->th_sync;
 865
 866                 /*
 867                  * add commit callback
 868                  * notice we don't do this in osd_trans_start()
 869                  * as underlying transaction can change during truncate
 870                  */
 871                 osd_journal_callback_set(hdl, osd_trans_commit_cb,
 872                                          &oh->ot_jcb);
 873
 874                 LASSERT(oti->oti_txns == 1);
 875                 oti->oti_txns--;
 876                 /*
 877                  * XXX: current rule is that we first start tx,
 878                  *      then lock object(s), but we can't use
 879                  *      this rule for data (due to locking specifics
 880                  *      in ldiskfs). also in long-term we'd like to
 881                  *      use usually-used (locks;tx) ordering. so,
 882                  *      UGLY thing is that we'll use one ordering for
 883                  *      data (ofd) and reverse ordering for metadata
 884                  *      (mdd). then at some point we'll fix the latter
 885                  */
 886                 if (osd_dt_dev(th->th_dev)->od_is_md) {
 887                         LASSERT(oti->oti_r_locks == 0);
 888                         LASSERT(oti->oti_w_locks == 0);
 889                 }
 890                 rc = dt_txn_hook_stop(env, th);
 891                 if (rc != 0)
 892                         CERROR("Failure in transaction hook: %d\n", rc);
 893                 oh->ot_handle = NULL;
 894                 OSD_CHECK_SLOW_TH(oh, oti->oti_dev,
 895                                   rc = ldiskfs_journal_stop(hdl));
 896                 if (rc != 0)
 897                         CERROR("Failure to stop transaction: %d\n", rc);
 898         } else {
 899                 OBD_FREE_PTR(oh);
 900         }
 901
 902         /* as we want IO to journal and data IO be concurrent, we don't block
 903          * awaiting data IO completion in osd_do_bio(), instead we wait here
 904          * once transaction is submitted to the journal. all reqular requests
 905          * don't do direct IO (except read/write), thus this wait_event becomes
 906          * no-op for them.
 907          *
 908          * IMPORTANT: we have to wait till any IO submited by the thread is
 909          * completed otherwise iobuf may be corrupted by different request
 910          */
 911         cfs_wait_event(iobuf->dr_wait,
 912                        cfs_atomic_read(&iobuf->dr_numreqs) == 0);
 913         if (!rc)
 914                 rc = iobuf->dr_error;
 915
 916         RETURN(rc);
 917 }
 918
 919 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
 920 {
 921         struct osd_thandle *oh = container_of0(th, struct osd_thandle,
 922                                                ot_super);
 923
 924         cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
 925
 926         return 0;
 927 }
 928
 929 /*
 930  * Called just before object is freed. Releases all resources except for
 931  * object itself (that is released by osd_object_free()).
 932  *
 933  * Concurrency: no concurrent access is possible that late in object
 934  * life-cycle.
 935  */
 936 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 937 {
 938         struct osd_object *obj   = osd_obj(l);
 939         struct inode      *inode = obj->oo_inode;
 940
 941         LINVRNT(osd_invariant(obj));
 942
 943         /*
 944          * If object is unlinked remove fid->ino mapping from object index.
 945          */
 946
 947         osd_index_fini(obj);
 948         if (inode != NULL) {
 949                 iput(inode);
 950                 obj->oo_inode = NULL;
 951         }
 952 }
 953
 954 /*
 955  * Concurrency: ->loo_object_release() is called under site spin-lock.
 956  */
 957 static void osd_object_release(const struct lu_env *env,
 958                                struct lu_object *l)
 959 {
 960 }
 961
 962 /*
 963  * Concurrency: shouldn't matter.
 964  */
 965 static int osd_object_print(const struct lu_env *env, void *cookie,
 966                             lu_printer_t p, const struct lu_object *l)
 967 {
 968         struct osd_object *o = osd_obj(l);
 969         struct iam_descr  *d;
 970
 971         if (o->oo_dir != NULL)
 972                 d = o->oo_dir->od_container.ic_descr;
 973         else
 974                 d = NULL;
 975         return (*p)(env, cookie, LUSTRE_OSD_NAME"-object@%p(i:%p:%lu/%u)[%s]",
 976                     o, o->oo_inode,
 977                     o->oo_inode ? o->oo_inode->i_ino : 0UL,
 978                     o->oo_inode ? o->oo_inode->i_generation : 0,
 979                     d ? d->id_ops->id_name : "plain");
 980 }
 981
 982 /*
 983  * Concurrency: shouldn't matter.
 984  */
 985 int osd_statfs(const struct lu_env *env, struct dt_device *d,
 986                struct obd_statfs *sfs)
 987 {
 988         struct osd_device  *osd = osd_dt_dev(d);
 989         struct super_block *sb = osd_sb(osd);
 990         struct kstatfs     *ksfs;
 991         int result = 0;
 992
 993         if (unlikely(osd->od_mount == NULL))
 994                 return -EINPROGRESS;
 995
 996         /* osd_lproc.c call this without env, allocate ksfs for that case */
 997         if (unlikely(env == NULL)) {
 998                 OBD_ALLOC_PTR(ksfs);
 999                 if (ksfs == NULL)
1000                         return -ENOMEM;
1001         } else {
1002                 ksfs = &osd_oti_get(env)->oti_ksfs;
1003         }
1004
1005         cfs_spin_lock(&osd->od_osfs_lock);
1006         /* cache 1 second */
1007         if (cfs_time_before_64(osd->od_osfs_age, cfs_time_shift_64(-1))) {
1008                 result = ll_do_statfs(sb, ksfs);
1009                 if (likely(result == 0)) { /* N.B. statfs can't really fail */
1010                         osd->od_osfs_age = cfs_time_current_64();
1011                         statfs_pack(&osd->od_statfs, ksfs);
1012                 }
1013         }
1014
1015         if (likely(result == 0))
1016                 *sfs = osd->od_statfs;
1017         cfs_spin_unlock(&osd->od_osfs_lock);
1018
1019         if (unlikely(env == NULL))
1020                 OBD_FREE_PTR(ksfs);
1021
1022         return result;
1023 }
1024
1025 /*
1026  * Concurrency: doesn't access mutable data.
1027  */
1028 static void osd_conf_get(const struct lu_env *env,
1029                          const struct dt_device *dev,
1030                          struct dt_device_param *param)
1031 {
1032         struct super_block *sb = osd_sb(osd_dt_dev(dev));
1033
1034         /*
1035          * XXX should be taken from not-yet-existing fs abstraction layer.
1036          */
1037         param->ddp_max_name_len = LDISKFS_NAME_LEN;
1038         param->ddp_max_nlink    = LDISKFS_LINK_MAX;
1039         param->ddp_block_shift  = sb->s_blocksize_bits;
1040         param->ddp_mntopts      = 0;
1041         if (test_opt(sb, XATTR_USER))
1042                 param->ddp_mntopts |= MNTOPT_USERXATTR;
1043         if (test_opt(sb, POSIX_ACL))
1044                 param->ddp_mntopts |= MNTOPT_ACL;
1045
1046 #if defined(LDISKFS_FEATURE_INCOMPAT_EA_INODE)
1047         if (LDISKFS_HAS_INCOMPAT_FEATURE(sb, LDISKFS_FEATURE_INCOMPAT_EA_INODE))
1048                 param->ddp_max_ea_size = LDISKFS_XATTR_MAX_LARGE_EA_SIZE;
1049         else
1050 #endif
1051                 param->ddp_max_ea_size = sb->s_blocksize;
1052
1053 }
1054
1055 /**
1056  * Helper function to get and fill the buffer with input values.
1057  */
1058 static struct lu_buf *osd_buf_get(const struct lu_env *env, void *area, ssize_t len)
1059 {
1060         struct lu_buf *buf;
1061
1062         buf = &osd_oti_get(env)->oti_buf;
1063         buf->lb_buf = area;
1064         buf->lb_len = len;
1065         return buf;
1066 }
1067
1068 /*
1069  * Concurrency: shouldn't matter.
1070  */
1071 static int osd_sync(const struct lu_env *env, struct dt_device *d)
1072 {
1073         CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_NAME);
1074         return ldiskfs_force_commit(osd_sb(osd_dt_dev(d)));
1075 }
1076
1077 /**
1078  * Start commit for OSD device.
1079  *
1080  * An implementation of dt_commit_async method for OSD device.
1081  * Asychronously starts underlayng fs sync and thereby a transaction
1082  * commit.
1083  *
1084  * \param env environment
1085  * \param d dt device
1086  *
1087  * \see dt_device_operations
1088  */
1089 static int osd_commit_async(const struct lu_env *env,
1090                             struct dt_device *d)
1091 {
1092         struct super_block *s = osd_sb(osd_dt_dev(d));
1093         ENTRY;
1094
1095         CDEBUG(D_HA, "async commit OSD %s\n", LUSTRE_OSD_NAME);
1096         RETURN(s->s_op->sync_fs(s, 0));
1097 }
1098
1099 /*
1100  * Concurrency: shouldn't matter.
1101  */
1102
1103 static int osd_ro(const struct lu_env *env, struct dt_device *d)
1104 {
1105         struct super_block *sb = osd_sb(osd_dt_dev(d));
1106         int rc;
1107         ENTRY;
1108
1109         CERROR("*** setting device %s read-only ***\n", LUSTRE_OSD_NAME);
1110
1111         rc = __lvfs_set_rdonly(sb->s_bdev, LDISKFS_SB(sb)->journal_bdev);
1112         RETURN(rc);
1113 }
1114
1115 /*
1116  * Concurrency: serialization provided by callers.
1117  */
1118 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
1119                               int mode, unsigned long timeout, __u32 alg,
1120                               struct lustre_capa_key *keys)
1121 {
1122         struct osd_device *dev = osd_dt_dev(d);
1123         ENTRY;
1124
1125         dev->od_fl_capa = mode;
1126         dev->od_capa_timeout = timeout;
1127         dev->od_capa_alg = alg;
1128         dev->od_capa_keys = keys;
1129         RETURN(0);
1130 }
1131
1132 /**
1133  * Concurrency: serialization provided by callers.
1134  */
1135 static void osd_init_quota_ctxt(const struct lu_env *env, struct dt_device *d,
1136                                struct dt_quota_ctxt *ctxt, void *data)
1137 {
1138         struct obd_device *obd = (void *)ctxt;
1139         struct vfsmount *mnt = (struct vfsmount *)data;
1140         ENTRY;
1141
1142         obd->u.obt.obt_sb = mnt->mnt_root->d_inode->i_sb;
1143         OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1144         obd->obd_lvfs_ctxt.pwdmnt = mnt;
1145         obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
1146         obd->obd_lvfs_ctxt.fs = get_ds();
1147
1148         EXIT;
1149 }
1150
1151 /**
1152  * Note: we do not count into QUOTA here.
1153  * If we mount with --data_journal we may need more.
1154  */
1155 const int osd_dto_credits_noquota[DTO_NR] = {
1156         /**
1157          * Insert/Delete.
1158          * INDEX_EXTRA_TRANS_BLOCKS(8) +
1159          * SINGLEDATA_TRANS_BLOCKS(8)
1160          * XXX Note: maybe iam need more, since iam have more level than
1161          *           EXT3 htree.
1162          */
1163         [DTO_INDEX_INSERT]  = 16,
1164         [DTO_INDEX_DELETE]  = 16,
1165         /**
1166          * Used for OI scrub
1167          */
1168         [DTO_INDEX_UPDATE]  = 16,
1169         /**
1170          * Create a object. The same as create object in EXT3.
1171          * DATA_TRANS_BLOCKS(14) +
1172          * INDEX_EXTRA_BLOCKS(8) +
1173          * 3(inode bits, groups, GDT)
1174          */
1175         [DTO_OBJECT_CREATE] = 25,
1176         /**
1177          * XXX: real credits to be fixed
1178          */
1179         [DTO_OBJECT_DELETE] = 25,
1180         /**
1181          * Attr set credits (inode)
1182          */
1183         [DTO_ATTR_SET_BASE] = 1,
1184         /**
1185          * Xattr set. The same as xattr of EXT3.
1186          * DATA_TRANS_BLOCKS(14)
1187          * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
1188          * are also counted in. Do not know why?
1189          */
1190         [DTO_XATTR_SET]     = 14,
1191         [DTO_LOG_REC]       = 14,
1192         /**
1193          * credits for inode change during write.
1194          */
1195         [DTO_WRITE_BASE]    = 3,
1196         /**
1197          * credits for single block write.
1198          */
1199         [DTO_WRITE_BLOCK]   = 14,
1200         /**
1201          * Attr set credits for chown.
1202          * This is extra credits for setattr, and it is null without quota
1203          */
1204         [DTO_ATTR_SET_CHOWN]= 0
1205 };
1206
1207 static const struct dt_device_operations osd_dt_ops = {
1208         .dt_root_get       = osd_root_get,
1209         .dt_statfs         = osd_statfs,
1210         .dt_trans_create   = osd_trans_create,
1211         .dt_trans_start    = osd_trans_start,
1212         .dt_trans_stop     = osd_trans_stop,
1213         .dt_trans_cb_add   = osd_trans_cb_add,
1214         .dt_conf_get       = osd_conf_get,
1215         .dt_sync           = osd_sync,
1216         .dt_ro             = osd_ro,
1217         .dt_commit_async   = osd_commit_async,
1218         .dt_init_capa_ctxt = osd_init_capa_ctxt,
1219         .dt_init_quota_ctxt= osd_init_quota_ctxt,
1220 };
1221
1222 static void osd_object_read_lock(const struct lu_env *env,
1223                                  struct dt_object *dt, unsigned role)
1224 {
1225         struct osd_object *obj = osd_dt_obj(dt);
1226         struct osd_thread_info *oti = osd_oti_get(env);
1227
1228         LINVRNT(osd_invariant(obj));
1229
1230         LASSERT(obj->oo_owner != env);
1231         cfs_down_read_nested(&obj->oo_sem, role);
1232
1233         LASSERT(obj->oo_owner == NULL);
1234         oti->oti_r_locks++;
1235 }
1236
1237 static void osd_object_write_lock(const struct lu_env *env,
1238                                   struct dt_object *dt, unsigned role)
1239 {
1240         struct osd_object *obj = osd_dt_obj(dt);
1241         struct osd_thread_info *oti = osd_oti_get(env);
1242
1243         LINVRNT(osd_invariant(obj));
1244
1245         LASSERT(obj->oo_owner != env);
1246         cfs_down_write_nested(&obj->oo_sem, role);
1247
1248         LASSERT(obj->oo_owner == NULL);
1249         obj->oo_owner = env;
1250         oti->oti_w_locks++;
1251 }
1252
1253 static void osd_object_read_unlock(const struct lu_env *env,
1254                                    struct dt_object *dt)
1255 {
1256         struct osd_object *obj = osd_dt_obj(dt);
1257         struct osd_thread_info *oti = osd_oti_get(env);
1258
1259         LINVRNT(osd_invariant(obj));
1260
1261         LASSERT(oti->oti_r_locks > 0);
1262         oti->oti_r_locks--;
1263         cfs_up_read(&obj->oo_sem);
1264 }
1265
1266 static void osd_object_write_unlock(const struct lu_env *env,
1267                                     struct dt_object *dt)
1268 {
1269         struct osd_object *obj = osd_dt_obj(dt);
1270         struct osd_thread_info *oti = osd_oti_get(env);
1271
1272         LINVRNT(osd_invariant(obj));
1273
1274         LASSERT(obj->oo_owner == env);
1275         LASSERT(oti->oti_w_locks > 0);
1276         oti->oti_w_locks--;
1277         obj->oo_owner = NULL;
1278         cfs_up_write(&obj->oo_sem);
1279 }
1280
1281 static int osd_object_write_locked(const struct lu_env *env,
1282                                    struct dt_object *dt)
1283 {
1284         struct osd_object *obj = osd_dt_obj(dt);
1285
1286         LINVRNT(osd_invariant(obj));
1287
1288         return obj->oo_owner == env;
1289 }
1290
1291 static int capa_is_sane(const struct lu_env *env,
1292                         struct osd_device *dev,
1293                         struct lustre_capa *capa,
1294                         struct lustre_capa_key *keys)
1295 {
1296         struct osd_thread_info *oti = osd_oti_get(env);
1297         struct lustre_capa *tcapa = &oti->oti_capa;
1298         struct obd_capa *oc;
1299         int i, rc = 0;
1300         ENTRY;
1301
1302         oc = capa_lookup(dev->od_capa_hash, capa, 0);
1303         if (oc) {
1304                 if (capa_is_expired(oc)) {
1305                         DEBUG_CAPA(D_ERROR, capa, "expired");
1306                         rc = -ESTALE;
1307                 }
1308                 capa_put(oc);
1309                 RETURN(rc);
1310         }
1311
1312         if (capa_is_expired_sec(capa)) {
1313                 DEBUG_CAPA(D_ERROR, capa, "expired");
1314                 RETURN(-ESTALE);
1315         }
1316
1317         cfs_spin_lock(&capa_lock);
1318         for (i = 0; i < 2; i++) {
1319                 if (keys[i].lk_keyid == capa->lc_keyid) {
1320                         oti->oti_capa_key = keys[i];
1321                         break;
1322                 }
1323         }
1324         cfs_spin_unlock(&capa_lock);
1325
1326         if (i == 2) {
1327                 DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
1328                 RETURN(-ESTALE);
1329         }
1330
1331         rc = capa_hmac(tcapa->lc_hmac, capa, oti->oti_capa_key.lk_key);
1332         if (rc)
1333                 RETURN(rc);
1334
1335         if (memcmp(tcapa->lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac))) {
1336                 DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
1337                 RETURN(-EACCES);
1338         }
1339
1340         oc = capa_add(dev->od_capa_hash, capa);
1341         capa_put(oc);
1342
1343         RETURN(0);
1344 }
1345
1346 int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
1347                     struct lustre_capa *capa, __u64 opc)
1348 {
1349         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
1350         struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1351         struct md_capainfo *ci;
1352         int rc;
1353
1354         if (!dev->od_fl_capa)
1355                 return 0;
1356
1357         if (capa == BYPASS_CAPA)
1358                 return 0;
1359
1360         ci = md_capainfo(env);
1361         if (unlikely(!ci))
1362                 return 0;
1363
1364         if (ci->mc_auth == LC_ID_NONE)
1365                 return 0;
1366
1367         if (!capa) {
1368                 CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
1369                 return -EACCES;
1370         }
1371
1372         if (!lu_fid_eq(fid, &capa->lc_fid)) {
1373                 DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",
1374                            PFID(fid));
1375                 return -EACCES;
1376         }
1377
1378         if (!capa_opc_supported(capa, opc)) {
1379                 DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
1380                 return -EACCES;
1381         }
1382
1383         if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
1384                 DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
1385                 return -EACCES;
1386         }
1387
1388         return 0;
1389 }
1390
1391 static struct timespec *osd_inode_time(const struct lu_env *env,
1392                                        struct inode *inode, __u64 seconds)
1393 {
1394         struct osd_thread_info *oti = osd_oti_get(env);
1395         struct timespec        *t   = &oti->oti_time;
1396
1397         t->tv_sec  = seconds;
1398         t->tv_nsec = 0;
1399         *t = timespec_trunc(*t, get_sb_time_gran(inode->i_sb));
1400         return t;
1401 }
1402
1403
1404 static void osd_inode_getattr(const struct lu_env *env,
1405                               struct inode *inode, struct lu_attr *attr)
1406 {
1407         attr->la_valid      |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
1408                                LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
1409                                LA_FLAGS | LA_NLINK | LA_RDEV | LA_BLKSIZE;
1410
1411         attr->la_atime      = LTIME_S(inode->i_atime);
1412         attr->la_mtime      = LTIME_S(inode->i_mtime);
1413         attr->la_ctime      = LTIME_S(inode->i_ctime);
1414         attr->la_mode       = inode->i_mode;
1415         attr->la_size       = i_size_read(inode);
1416         attr->la_blocks     = inode->i_blocks;
1417         attr->la_uid        = inode->i_uid;
1418         attr->la_gid        = inode->i_gid;
1419         attr->la_flags      = LDISKFS_I(inode)->i_flags;
1420         attr->la_nlink      = inode->i_nlink;
1421         attr->la_rdev       = inode->i_rdev;
1422         attr->la_blksize    = ll_inode_blksize(inode);
1423         attr->la_blkbits    = inode->i_blkbits;
1424 }
1425
1426 static int osd_attr_get(const struct lu_env *env,
1427                         struct dt_object *dt,
1428                         struct lu_attr *attr,
1429                         struct lustre_capa *capa)
1430 {
1431         struct osd_object *obj = osd_dt_obj(dt);
1432
1433         LASSERT(dt_object_exists(dt));
1434         LINVRNT(osd_invariant(obj));
1435
1436         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
1437                 return -EACCES;
1438
1439         cfs_spin_lock(&obj->oo_guard);
1440         osd_inode_getattr(env, obj->oo_inode, attr);
1441         cfs_spin_unlock(&obj->oo_guard);
1442         return 0;
1443 }
1444
1445 static int osd_declare_attr_set(const struct lu_env *env,
1446                                 struct dt_object *dt,
1447                                 const struct lu_attr *attr,
1448                                 struct thandle *handle)
1449 {
1450         struct osd_thandle *oh;
1451         struct osd_object *obj;
1452
1453         LASSERT(dt != NULL);
1454         LASSERT(handle != NULL);
1455
1456         obj = osd_dt_obj(dt);
1457         LASSERT(osd_invariant(obj));
1458
1459         oh = container_of0(handle, struct osd_thandle, ot_super);
1460         LASSERT(oh->ot_handle == NULL);
1461
1462         OSD_DECLARE_OP(oh, attr_set);
1463         oh->ot_credits += osd_dto_credits_noquota[DTO_ATTR_SET_BASE];
1464
1465         if (attr && attr->la_valid & LA_UID) {
1466                 if (obj->oo_inode)
1467                         osd_declare_qid(dt, oh, USRQUOTA, obj->oo_inode->i_uid,
1468                                         obj->oo_inode);
1469                 osd_declare_qid(dt, oh, USRQUOTA, attr->la_uid, NULL);
1470         }
1471         if (attr && attr->la_valid & LA_GID) {
1472                 if (obj->oo_inode)
1473                         osd_declare_qid(dt, oh, GRPQUOTA, obj->oo_inode->i_gid,
1474                                         obj->oo_inode);
1475                 osd_declare_qid(dt, oh, GRPQUOTA, attr->la_gid, NULL);
1476         }
1477
1478         return 0;
1479 }
1480
1481 static int osd_inode_setattr(const struct lu_env *env,
1482                              struct inode *inode, const struct lu_attr *attr)
1483 {
1484         __u64 bits;
1485
1486         bits = attr->la_valid;
1487
1488         LASSERT(!(bits & LA_TYPE)); /* Huh? You want too much. */
1489
1490         if (bits & LA_ATIME)
1491                 inode->i_atime  = *osd_inode_time(env, inode, attr->la_atime);
1492         if (bits & LA_CTIME)
1493                 inode->i_ctime  = *osd_inode_time(env, inode, attr->la_ctime);
1494         if (bits & LA_MTIME)
1495                 inode->i_mtime  = *osd_inode_time(env, inode, attr->la_mtime);
1496         if (bits & LA_SIZE) {
1497                 LDISKFS_I(inode)->i_disksize = attr->la_size;
1498                 i_size_write(inode, attr->la_size);
1499         }
1500
1501 #if 0
1502         /* OSD should not change "i_blocks" which is used by quota.
1503          * "i_blocks" should be changed by ldiskfs only. */
1504         if (bits & LA_BLOCKS)
1505                 inode->i_blocks = attr->la_blocks;
1506 #endif
1507         if (bits & LA_MODE)
1508                 inode->i_mode   = (inode->i_mode & S_IFMT) |
1509                         (attr->la_mode & ~S_IFMT);
1510         if (bits & LA_UID)
1511                 inode->i_uid    = attr->la_uid;
1512         if (bits & LA_GID)
1513                 inode->i_gid    = attr->la_gid;
1514         if (bits & LA_NLINK)
1515                 inode->i_nlink  = attr->la_nlink;
1516         if (bits & LA_RDEV)
1517                 inode->i_rdev   = attr->la_rdev;
1518
1519         if (bits & LA_FLAGS) {
1520                 /* always keep S_NOCMTIME */
1521                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
1522                                  S_NOCMTIME;
1523         }
1524         return 0;
1525 }
1526
1527 static int osd_quota_transfer(struct inode *inode, const struct lu_attr *attr)
1528 {
1529         if ((attr->la_valid & LA_UID && attr->la_uid != inode->i_uid) ||
1530             (attr->la_valid & LA_GID && attr->la_gid != inode->i_gid)) {
1531                 struct iattr    iattr;
1532                 int             rc;
1533
1534                 iattr.ia_valid = 0;
1535                 if (attr->la_valid & LA_UID)
1536                         iattr.ia_valid |= ATTR_UID;
1537                 if (attr->la_valid & LA_GID)
1538                         iattr.ia_valid |= ATTR_GID;
1539                 iattr.ia_uid = attr->la_uid;
1540                 iattr.ia_gid = attr->la_gid;
1541
1542                 rc = ll_vfs_dq_transfer(inode, &iattr);
1543                 if (rc) {
1544                         CERROR("%s: quota transfer failed: rc = %d. Is quota "
1545                                "enforcement enabled on the ldiskfs filesystem?",
1546                                inode->i_sb->s_id, rc);
1547                         return rc;
1548                 }
1549         }
1550         return 0;
1551 }
1552
1553 static int osd_attr_set(const struct lu_env *env,
1554                         struct dt_object *dt,
1555                         const struct lu_attr *attr,
1556                         struct thandle *handle,
1557                         struct lustre_capa *capa)
1558 {
1559         struct osd_object *obj = osd_dt_obj(dt);
1560         struct inode      *inode;
1561         int rc;
1562
1563         LASSERT(handle != NULL);
1564         LASSERT(dt_object_exists(dt));
1565         LASSERT(osd_invariant(obj));
1566
1567         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
1568                 return -EACCES;
1569
1570         OSD_EXEC_OP(handle, attr_set);
1571
1572         inode = obj->oo_inode;
1573         if (!osd_dt_dev(handle->th_dev)->od_is_md) {
1574                 /* OFD support */
1575                 rc = osd_quota_transfer(inode, attr);
1576                 if (rc)
1577                         return rc;
1578         } else {
1579 #ifdef HAVE_QUOTA_SUPPORT
1580                 if ((attr->la_valid & LA_UID && attr->la_uid != inode->i_uid) ||
1581                     (attr->la_valid & LA_GID && attr->la_gid != inode->i_gid)) {
1582                         struct osd_ctxt *save = &osd_oti_get(env)->oti_ctxt;
1583                         struct           iattr iattr;
1584                         int              rc;
1585
1586                         iattr.ia_valid = 0;
1587                         if (attr->la_valid & LA_UID)
1588                                 iattr.ia_valid |= ATTR_UID;
1589                         if (attr->la_valid & LA_GID)
1590                                 iattr.ia_valid |= ATTR_GID;
1591                         iattr.ia_uid = attr->la_uid;
1592                         iattr.ia_gid = attr->la_gid;
1593                         osd_push_ctxt(env, save, 1);
1594                         rc = ll_vfs_dq_transfer(inode, &iattr) ? -EDQUOT : 0;
1595                         osd_pop_ctxt(save, 1);
1596                         if (rc != 0)
1597                                 return rc;
1598                 }
1599 #endif
1600         }
1601         cfs_spin_lock(&obj->oo_guard);
1602         rc = osd_inode_setattr(env, inode, attr);
1603         cfs_spin_unlock(&obj->oo_guard);
1604
1605         if (!rc)
1606                 inode->i_sb->s_op->dirty_inode(inode);
1607         return rc;
1608 }
1609
1610 struct dentry *osd_child_dentry_get(const struct lu_env *env,
1611                                     struct osd_object *obj,
1612                                     const char *name, const int namelen)
1613 {
1614         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
1615 }
1616
1617 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
1618                       cfs_umode_t mode,
1619                       struct dt_allocation_hint *hint,
1620                       struct thandle *th)
1621 {
1622         int result;
1623         struct osd_device  *osd = osd_obj2dev(obj);
1624         struct osd_thandle *oth;
1625         struct dt_object   *parent = NULL;
1626         struct inode       *inode;
1627 #ifdef HAVE_QUOTA_SUPPORT
1628         struct osd_ctxt    *save = &info->oti_ctxt;
1629 #endif
1630
1631         LINVRNT(osd_invariant(obj));
1632         LASSERT(obj->oo_inode == NULL);
1633         LASSERT(obj->oo_hl_head == NULL);
1634
1635         if (S_ISDIR(mode) && ldiskfs_pdo) {
1636                 obj->oo_hl_head =ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
1637                 if (obj->oo_hl_head == NULL)
1638                         return -ENOMEM;
1639         }
1640
1641         oth = container_of(th, struct osd_thandle, ot_super);
1642         LASSERT(oth->ot_handle->h_transaction != NULL);
1643
1644         if (hint && hint->dah_parent)
1645                 parent = hint->dah_parent;
1646
1647 #ifdef HAVE_QUOTA_SUPPORT
1648         osd_push_ctxt(info->oti_env, save, osd_dt_dev(th->th_dev)->od_is_md);
1649 #endif
1650         inode = ldiskfs_create_inode(oth->ot_handle,
1651                                      parent ? osd_dt_obj(parent)->oo_inode :
1652                                               osd_sb(osd)->s_root->d_inode,
1653                                      mode);
1654 #ifdef HAVE_QUOTA_SUPPORT
1655         osd_pop_ctxt(save, osd_dt_dev(th->th_dev)->od_is_md);
1656 #endif
1657         if (!IS_ERR(inode)) {
1658                 /* Do not update file c/mtime in ldiskfs.
1659                  * NB: don't need any lock because no contention at this
1660                  * early stage */
1661                 inode->i_flags |= S_NOCMTIME;
1662                 inode->i_state |= I_LUSTRE_NOSCRUB;
1663                 obj->oo_inode = inode;
1664                 result = 0;
1665         } else {
1666                 if (obj->oo_hl_head != NULL) {
1667                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
1668                         obj->oo_hl_head = NULL;
1669                 }
1670                 result = PTR_ERR(inode);
1671         }
1672         LINVRNT(osd_invariant(obj));
1673         return result;
1674 }
1675
1676 enum {
1677         OSD_NAME_LEN = 255
1678 };
1679
1680 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
1681                      struct lu_attr *attr,
1682                      struct dt_allocation_hint *hint,
1683                      struct dt_object_format *dof,
1684                      struct thandle *th)
1685 {
1686         int result;
1687         struct osd_thandle *oth;
1688         struct osd_device *osd = osd_obj2dev(obj);
1689         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX));
1690
1691         LASSERT(S_ISDIR(attr->la_mode));
1692
1693         oth = container_of(th, struct osd_thandle, ot_super);
1694         LASSERT(oth->ot_handle->h_transaction != NULL);
1695         result = osd_mkfile(info, obj, mode, hint, th);
1696         if (result == 0 && osd->od_iop_mode == 0) {
1697                 LASSERT(obj->oo_inode != NULL);
1698                 /*
1699                  * XXX uh-oh... call low-level iam function directly.
1700                  */
1701
1702                 result = iam_lvar_create(obj->oo_inode, OSD_NAME_LEN, 4,
1703                                          sizeof (struct osd_fid_pack),
1704                                          oth->ot_handle);
1705         }
1706         return result;
1707 }
1708
1709 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
1710                         struct lu_attr *attr,
1711                         struct dt_allocation_hint *hint,
1712                         struct dt_object_format *dof,
1713                         struct thandle *th)
1714 {
1715         int result;
1716         struct osd_thandle *oth;
1717         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
1718
1719         __u32 mode = (attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX));
1720
1721         LASSERT(S_ISREG(attr->la_mode));
1722
1723         oth = container_of(th, struct osd_thandle, ot_super);
1724         LASSERT(oth->ot_handle->h_transaction != NULL);
1725
1726         result = osd_mkfile(info, obj, mode, hint, th);
1727         if (result == 0) {
1728                 LASSERT(obj->oo_inode != NULL);
1729                 if (feat->dif_flags & DT_IND_VARKEY)
1730                         result = iam_lvar_create(obj->oo_inode,
1731                                                  feat->dif_keysize_max,
1732                                                  feat->dif_ptrsize,
1733                                                  feat->dif_recsize_max,
1734                                                  oth->ot_handle);
1735                 else
1736                         result = iam_lfix_create(obj->oo_inode,
1737                                                  feat->dif_keysize_max,
1738                                                  feat->dif_ptrsize,
1739                                                  feat->dif_recsize_max,
1740                                                  oth->ot_handle);
1741
1742         }
1743         return result;
1744 }
1745
1746 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
1747                      struct lu_attr *attr,
1748                      struct dt_allocation_hint *hint,
1749                      struct dt_object_format *dof,
1750                      struct thandle *th)
1751 {
1752         LASSERT(S_ISREG(attr->la_mode));
1753         return osd_mkfile(info, obj, (attr->la_mode &
1754                                (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
1755 }
1756
1757 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
1758                      struct lu_attr *attr,
1759                      struct dt_allocation_hint *hint,
1760                      struct dt_object_format *dof,
1761                      struct thandle *th)
1762 {
1763         LASSERT(S_ISLNK(attr->la_mode));
1764         return osd_mkfile(info, obj, (attr->la_mode &
1765                               (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th);
1766 }
1767
1768 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
1769                      struct lu_attr *attr,
1770                      struct dt_allocation_hint *hint,
1771                      struct dt_object_format *dof,
1772                      struct thandle *th)
1773 {
1774         cfs_umode_t mode = attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX);
1775         int result;
1776
1777         LINVRNT(osd_invariant(obj));
1778         LASSERT(obj->oo_inode == NULL);
1779         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
1780                 S_ISFIFO(mode) || S_ISSOCK(mode));
1781
1782         result = osd_mkfile(info, obj, mode, hint, th);
1783         if (result == 0) {
1784                 LASSERT(obj->oo_inode != NULL);
1785                 /*
1786                  * This inode should be marked dirty for i_rdev.  Currently
1787                  * that is done in the osd_attr_init().
1788                  */
1789                 init_special_inode(obj->oo_inode, mode, attr->la_rdev);
1790         }
1791         LINVRNT(osd_invariant(obj));
1792         return result;
1793 }
1794
1795 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
1796                               struct lu_attr *,
1797                               struct dt_allocation_hint *hint,
1798                               struct dt_object_format *dof,
1799                               struct thandle *);
1800
1801 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1802 {
1803         osd_obj_type_f result;
1804
1805         switch (type) {
1806         case DFT_DIR:
1807                 result = osd_mkdir;
1808                 break;
1809         case DFT_REGULAR:
1810                 result = osd_mkreg;
1811                 break;
1812         case DFT_SYM:
1813                 result = osd_mksym;
1814                 break;
1815         case DFT_NODE:
1816                 result = osd_mknod;
1817                 break;
1818         case DFT_INDEX:
1819                 result = osd_mk_index;
1820                 break;
1821
1822         default:
1823                 LBUG();
1824                 break;
1825         }
1826         return result;
1827 }
1828
1829
1830 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1831                         struct dt_object *parent, cfs_umode_t child_mode)
1832 {
1833         LASSERT(ah);
1834
1835         memset(ah, 0, sizeof(*ah));
1836         ah->dah_parent = parent;
1837         ah->dah_mode = child_mode;
1838 }
1839
1840 static void osd_attr_init(struct osd_thread_info *info, struct osd_object *obj,
1841                           struct lu_attr *attr, struct dt_object_format *dof)
1842 {
1843         struct inode   *inode = obj->oo_inode;
1844         __u64           valid = attr->la_valid;
1845         int             result;
1846
1847         attr->la_valid &= ~(LA_TYPE | LA_MODE);
1848
1849         if (dof->dof_type != DFT_NODE)
1850                 attr->la_valid &= ~LA_RDEV;
1851         if ((valid & LA_ATIME) && (attr->la_atime == LTIME_S(inode->i_atime)))
1852                 attr->la_valid &= ~LA_ATIME;
1853         if ((valid & LA_CTIME) && (attr->la_ctime == LTIME_S(inode->i_ctime)))
1854                 attr->la_valid &= ~LA_CTIME;
1855         if ((valid & LA_MTIME) && (attr->la_mtime == LTIME_S(inode->i_mtime)))
1856                 attr->la_valid &= ~LA_MTIME;
1857
1858         if (!osd_obj2dev(obj)->od_is_md) {
1859                 /* OFD support */
1860                 result = osd_quota_transfer(inode, attr);
1861                 if (result)
1862                         return;
1863         } else {
1864 #ifdef HAVE_QUOTA_SUPPORT
1865                 attr->la_valid &= ~(LA_UID | LA_GID);
1866 #endif
1867         }
1868
1869         if (attr->la_valid != 0) {
1870                 result = osd_inode_setattr(info->oti_env, inode, attr);
1871                 /*
1872                  * The osd_inode_setattr() should always succeed here.  The
1873                  * only error that could be returned is EDQUOT when we are
1874                  * trying to change the UID or GID of the inode. However, this
1875                  * should not happen since quota enforcement is no longer
1876                  * enabled on ldiskfs (lquota takes care of it).
1877                  */
1878                 LASSERTF(result == 0, "%d", result);
1879                 inode->i_sb->s_op->dirty_inode(inode);
1880         }
1881
1882         attr->la_valid = valid;
1883 }
1884
1885 /**
1886  * Helper function for osd_object_create()
1887  *
1888  * \retval 0, on success
1889  */
1890 static int __osd_object_create(struct osd_thread_info *info,
1891                                struct osd_object *obj, struct lu_attr *attr,
1892                                struct dt_allocation_hint *hint,
1893                                struct dt_object_format *dof,
1894                                struct thandle *th)
1895 {
1896         int     result;
1897         __u32   umask;
1898
1899         /* we drop umask so that permissions we pass are not affected */
1900         umask = current->fs->umask;
1901         current->fs->umask = 0;
1902
1903         result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof,
1904                                                   th);
1905         if (result == 0) {
1906                 osd_attr_init(info, obj, attr, dof);
1907                 osd_object_init0(obj);
1908                 /* bz 24037 */
1909                 if (obj->oo_inode && (obj->oo_inode->i_state & I_NEW))
1910                         unlock_new_inode(obj->oo_inode);
1911         }
1912
1913         /* restore previous umask value */
1914         current->fs->umask = umask;
1915
1916         return result;
1917 }
1918
1919 /**
1920  * Helper function for osd_object_create()
1921  *
1922  * \retval 0, on success
1923  */
1924 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
1925                            const struct lu_fid *fid, struct thandle *th)
1926 {
1927         struct osd_thread_info *info = osd_oti_get(env);
1928         struct osd_inode_id    *id   = &info->oti_id;
1929         struct osd_device      *osd  = osd_obj2dev(obj);
1930
1931         LASSERT(obj->oo_inode != NULL);
1932
1933         if (osd->od_is_md) {
1934                 struct md_ucred *uc = md_ucred(env);
1935                 LASSERT(uc != NULL);
1936         }
1937
1938         osd_id_gen(id, obj->oo_inode->i_ino, obj->oo_inode->i_generation);
1939         return osd_oi_insert(info, osd, fid, id, th);
1940 }
1941
1942 static int osd_declare_object_create(const struct lu_env *env,
1943                                      struct dt_object *dt,
1944                                      struct lu_attr *attr,
1945                                      struct dt_allocation_hint *hint,
1946                                      struct dt_object_format *dof,
1947                                      struct thandle *handle)
1948 {
1949         struct osd_thandle *oh;
1950
1951         LASSERT(handle != NULL);
1952
1953         oh = container_of0(handle, struct osd_thandle, ot_super);
1954         LASSERT(oh->ot_handle == NULL);
1955
1956         OSD_DECLARE_OP(oh, create);
1957         oh->ot_credits += osd_dto_credits_noquota[DTO_OBJECT_CREATE];
1958         /* XXX: So far, only normal fid needs be inserted into the oi,
1959          *      things could be changed later. Revise following code then. */
1960         if (fid_is_norm(lu_object_fid(&dt->do_lu))) {
1961                 OSD_DECLARE_OP(oh, insert);
1962                 oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_INSERT];
1963         }
1964         /* If this is directory, then we expect . and .. to be inserted as
1965          * well. The one directory block always needs to be created for the
1966          * directory, so we could use DTO_WRITE_BASE here (GDT, block bitmap,
1967          * block), there is no danger of needing a tree for the first block.
1968          */
1969         if (attr && S_ISDIR(attr->la_mode)) {
1970                 OSD_DECLARE_OP(oh, insert);
1971                 OSD_DECLARE_OP(oh, insert);
1972                 oh->ot_credits += osd_dto_credits_noquota[DTO_WRITE_BASE];
1973         }
1974
1975         if (attr) {
1976                 osd_declare_qid(dt, oh, USRQUOTA, attr->la_uid, NULL);
1977                 osd_declare_qid(dt, oh, GRPQUOTA, attr->la_gid, NULL);
1978         }
1979         return 0;
1980 }
1981
1982 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1983                              struct lu_attr *attr,
1984                              struct dt_allocation_hint *hint,
1985                              struct dt_object_format *dof,
1986                              struct thandle *th)
1987 {
1988         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
1989         struct osd_object      *obj    = osd_dt_obj(dt);
1990         struct osd_thread_info *info   = osd_oti_get(env);
1991         int result;
1992
1993         ENTRY;
1994
1995         LINVRNT(osd_invariant(obj));
1996         LASSERT(!dt_object_exists(dt));
1997         LASSERT(osd_write_locked(env, obj));
1998         LASSERT(th != NULL);
1999
2000         if (unlikely(fid_is_acct(fid)))
2001                 /* Quota files can't be created from the kernel any more,
2002                  * 'tune2fs -O quota' will take care of creating them */
2003                 RETURN(-EPERM);
2004
2005         OSD_EXEC_OP(th, create);
2006
2007         result = __osd_object_create(info, obj, attr, hint, dof, th);
2008         if (result == 0)
2009                 result = __osd_oi_insert(env, obj, fid, th);
2010
2011         LASSERT(ergo(result == 0, dt_object_exists(dt)));
2012         LASSERT(osd_invariant(obj));
2013         RETURN(result);
2014 }
2015
2016 /**
2017  * Called to destroy on-disk representation of the object
2018  *
2019  * Concurrency: must be locked
2020  */
2021 static int osd_declare_object_destroy(const struct lu_env *env,
2022                                       struct dt_object *dt,
2023                                       struct thandle *th)
2024 {
2025         struct osd_object  *obj = osd_dt_obj(dt);
2026         struct inode       *inode = obj->oo_inode;
2027         struct osd_thandle *oh;
2028
2029         ENTRY;
2030
2031         oh = container_of0(th, struct osd_thandle, ot_super);
2032         LASSERT(oh->ot_handle == NULL);
2033         LASSERT(inode);
2034
2035         OSD_DECLARE_OP(oh, destroy);
2036         OSD_DECLARE_OP(oh, delete);
2037         oh->ot_credits += osd_dto_credits_noquota[DTO_OBJECT_DELETE];
2038         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_DELETE];
2039
2040         osd_declare_qid(dt, oh, USRQUOTA, inode->i_uid, inode);
2041         osd_declare_qid(dt, oh, GRPQUOTA, inode->i_gid, inode);
2042
2043         RETURN(0);
2044 }
2045
2046 static int osd_object_destroy(const struct lu_env *env,
2047                               struct dt_object *dt,
2048                               struct thandle *th)
2049 {
2050         const struct lu_fid    *fid = lu_object_fid(&dt->do_lu);
2051         struct osd_object      *obj = osd_dt_obj(dt);
2052         struct inode           *inode = obj->oo_inode;
2053         struct osd_device      *osd = osd_obj2dev(obj);
2054         struct osd_thandle     *oh;
2055         int                     result;
2056         ENTRY;
2057
2058         oh = container_of0(th, struct osd_thandle, ot_super);
2059         LASSERT(oh->ot_handle);
2060         LASSERT(inode);
2061         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
2062
2063         if (unlikely(fid_is_acct(fid)))
2064                 RETURN(-EPERM);
2065
2066         /* Parallel control for OI scrub. For most of cases, there is no
2067          * lock contention. So it will not affect unlink performance. */
2068         cfs_mutex_lock(&inode->i_mutex);
2069         if (S_ISDIR(inode->i_mode)) {
2070                 LASSERT(osd_inode_unlinked(inode) ||
2071                         inode->i_nlink == 1);
2072                 cfs_spin_lock(&obj->oo_guard);
2073                 inode->i_nlink = 0;
2074                 cfs_spin_unlock(&obj->oo_guard);
2075                 inode->i_sb->s_op->dirty_inode(inode);
2076         } else {
2077                 LASSERT(osd_inode_unlinked(inode));
2078         }
2079
2080         OSD_EXEC_OP(th, destroy);
2081
2082         result = osd_oi_delete(osd_oti_get(env), osd, fid, th);
2083         cfs_mutex_unlock(&inode->i_mutex);
2084
2085         /* XXX: add to ext3 orphan list */
2086         /* rc = ext3_orphan_add(handle_t *handle, struct inode *inode) */
2087
2088         /* not needed in the cache anymore */
2089         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
2090
2091         RETURN(0);
2092 }
2093
2094 /**
2095  * Helper function for osd_xattr_set()
2096  */
2097 static int __osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2098                            const struct lu_buf *buf, const char *name, int fl)
2099 {
2100         struct osd_object      *obj      = osd_dt_obj(dt);
2101         struct inode           *inode    = obj->oo_inode;
2102         struct osd_thread_info *info     = osd_oti_get(env);
2103         struct dentry          *dentry   = &info->oti_child_dentry;
2104         int                     fs_flags = 0;
2105         int                     rc;
2106
2107         LASSERT(dt_object_exists(dt));
2108         LASSERT(inode->i_op != NULL && inode->i_op->setxattr != NULL);
2109
2110         if (fl & LU_XATTR_REPLACE)
2111                 fs_flags |= XATTR_REPLACE;
2112
2113         if (fl & LU_XATTR_CREATE)
2114                 fs_flags |= XATTR_CREATE;
2115
2116         dentry->d_inode = inode;
2117         rc = inode->i_op->setxattr(dentry, name, buf->lb_buf,
2118                                    buf->lb_len, fs_flags);
2119         return rc;
2120 }
2121
2122 /**
2123  * Put the fid into lustre_mdt_attrs, and then place the structure
2124  * inode's ea. This fid should not be altered during the life time
2125  * of the inode.
2126  *
2127  * \retval +ve, on success
2128  * \retval -ve, on error
2129  *
2130  * FIXME: It is good to have/use ldiskfs_xattr_set_handle() here
2131  */
2132 static int osd_ea_fid_set(const struct lu_env *env, struct dt_object *dt,
2133                           const struct lu_fid *fid)
2134 {
2135         struct osd_thread_info  *info      = osd_oti_get(env);
2136         struct lustre_mdt_attrs *mdt_attrs = &info->oti_mdt_attrs;
2137
2138         lustre_lma_init(mdt_attrs, fid);
2139         lustre_lma_swab(mdt_attrs);
2140         return __osd_xattr_set(env, dt,
2141                                osd_buf_get(env, mdt_attrs, sizeof *mdt_attrs),
2142                                XATTR_NAME_LMA, LU_XATTR_CREATE);
2143
2144 }
2145
2146 /**
2147  * ldiskfs supports fid in dirent, it is passed in dentry->d_fsdata.
2148  * lustre 1.8 also uses d_fsdata for passing other info to ldiskfs.
2149  * To have compatilibility with 1.8 ldiskfs driver we need to have
2150  * magic number at start of fid data.
2151  * \ldiskfs_dentry_param is used only to pass fid from osd to ldiskfs.
2152  * its inmemory API.
2153  */
2154 void osd_get_ldiskfs_dirent_param(struct ldiskfs_dentry_param *param,
2155                                   const struct dt_rec *fid)
2156 {
2157         param->edp_magic = LDISKFS_LUFID_MAGIC;
2158         param->edp_len =  sizeof(struct lu_fid) + 1;
2159
2160         fid_cpu_to_be((struct lu_fid *)param->edp_data,
2161                       (struct lu_fid *)fid);
2162 }
2163
2164 /**
2165  * Try to read the fid from inode ea into dt_rec, if return value
2166  * i.e. rc is +ve, then we got fid, otherwise we will have to form igif
2167  *
2168  * \param fid object fid.
2169  *
2170  * \retval 0 on success
2171  */
2172 static int osd_ea_fid_get(const struct lu_env *env, struct osd_object *obj,
2173                           __u32 ino, struct lu_fid *fid,
2174                           struct osd_inode_id *id)
2175 {
2176         struct osd_thread_info *info  = osd_oti_get(env);
2177         struct inode           *inode;
2178         ENTRY;
2179
2180         osd_id_gen(id, ino, OSD_OII_NOGEN);
2181         inode = osd_iget_fid(info, osd_obj2dev(obj), id, fid);
2182         if (IS_ERR(inode))
2183                 RETURN(PTR_ERR(inode));
2184
2185         iput(inode);
2186         RETURN(0);
2187 }
2188
2189 /**
2190  * OSD layer object create function for interoperability mode (b11826).
2191  * This is mostly similar to osd_object_create(). Only difference being, fid is
2192  * inserted into inode ea here.
2193  *
2194  * \retval   0, on success
2195  * \retval -ve, on error
2196  */
2197 static int osd_object_ea_create(const struct lu_env *env, struct dt_object *dt,
2198                                 struct lu_attr *attr,
2199                                 struct dt_allocation_hint *hint,
2200                                 struct dt_object_format *dof,
2201                                 struct thandle *th)
2202 {
2203         const struct lu_fid    *fid    = lu_object_fid(&dt->do_lu);
2204         struct osd_object      *obj    = osd_dt_obj(dt);
2205         struct osd_thread_info *info   = osd_oti_get(env);
2206         int                     result;
2207
2208         ENTRY;
2209
2210         LASSERT(osd_invariant(obj));
2211         LASSERT(!dt_object_exists(dt));
2212         LASSERT(osd_write_locked(env, obj));
2213         LASSERT(th != NULL);
2214
2215         if (unlikely(fid_is_acct(fid)))
2216                 /* Quota files can't be created from the kernel any more,
2217                  * 'tune2fs -O quota' will take care of creating them */
2218                 RETURN(-EPERM);
2219
2220         OSD_EXEC_OP(th, create);
2221
2222         result = __osd_object_create(info, obj, attr, hint, dof, th);
2223         /* objects under osd root shld have igif fid, so dont add fid EA */
2224         if (result == 0 && fid_seq(fid) >= FID_SEQ_NORMAL)
2225                 result = osd_ea_fid_set(env, dt, fid);
2226
2227         if (result == 0)
2228                 result = __osd_oi_insert(env, obj, fid, th);
2229
2230         LASSERT(ergo(result == 0, dt_object_exists(dt)));
2231         LINVRNT(osd_invariant(obj));
2232         RETURN(result);
2233 }
2234
2235 static int osd_declare_object_ref_add(const struct lu_env *env,
2236                                       struct dt_object *dt,
2237                                       struct thandle *handle)
2238 {
2239         struct osd_thandle *oh;
2240
2241         /* it's possible that object doesn't exist yet */
2242         LASSERT(handle != NULL);
2243
2244         oh = container_of0(handle, struct osd_thandle, ot_super);
2245         LASSERT(oh->ot_handle == NULL);
2246
2247         OSD_DECLARE_OP(oh, ref_add);
2248         oh->ot_credits += osd_dto_credits_noquota[DTO_ATTR_SET_BASE];
2249
2250         return 0;
2251 }
2252
2253 /*
2254  * Concurrency: @dt is write locked.
2255  */
2256 static int osd_object_ref_add(const struct lu_env *env,
2257                               struct dt_object *dt, struct thandle *th)
2258 {
2259         struct osd_object *obj = osd_dt_obj(dt);
2260         struct inode      *inode = obj->oo_inode;
2261
2262         LINVRNT(osd_invariant(obj));
2263         LASSERT(dt_object_exists(dt));
2264         LASSERT(osd_write_locked(env, obj));
2265         LASSERT(th != NULL);
2266
2267         OSD_EXEC_OP(th, ref_add);
2268
2269         /*
2270          * DIR_NLINK feature is set for compatibility reasons if:
2271          * 1) nlinks > LDISKFS_LINK_MAX, or
2272          * 2) nlinks == 2, since this indicates i_nlink was previously 1.
2273          *
2274          * It is easier to always set this flag (rather than check and set),
2275          * since it has less overhead, and the superblock will be dirtied
2276          * at some point. Both e2fsprogs and any Lustre-supported ldiskfs
2277          * do not actually care whether this flag is set or not.
2278          */
2279         cfs_spin_lock(&obj->oo_guard);
2280         inode->i_nlink++;
2281         if (S_ISDIR(inode->i_mode) && inode->i_nlink > 1) {
2282                 if (inode->i_nlink >= LDISKFS_LINK_MAX ||
2283                     inode->i_nlink == 2)
2284                         inode->i_nlink = 1;
2285         }
2286         LASSERT(inode->i_nlink <= LDISKFS_LINK_MAX);
2287         cfs_spin_unlock(&obj->oo_guard);
2288         inode->i_sb->s_op->dirty_inode(inode);
2289         LINVRNT(osd_invariant(obj));
2290
2291         return 0;
2292 }
2293
2294 static int osd_declare_object_ref_del(const struct lu_env *env,
2295                                       struct dt_object *dt,
2296                                       struct thandle *handle)
2297 {
2298         struct osd_thandle *oh;
2299
2300         LASSERT(dt_object_exists(dt));
2301         LASSERT(handle != NULL);
2302
2303         oh = container_of0(handle, struct osd_thandle, ot_super);
2304         LASSERT(oh->ot_handle == NULL);
2305
2306         OSD_DECLARE_OP(oh, ref_del);
2307         oh->ot_credits += osd_dto_credits_noquota[DTO_ATTR_SET_BASE];
2308
2309         return 0;
2310 }
2311
2312 /*
2313  * Concurrency: @dt is write locked.
2314  */
2315 static int osd_object_ref_del(const struct lu_env *env, struct dt_object *dt,
2316                               struct thandle *th)
2317 {
2318         struct osd_object *obj = osd_dt_obj(dt);
2319         struct inode      *inode = obj->oo_inode;
2320
2321         LINVRNT(osd_invariant(obj));
2322         LASSERT(dt_object_exists(dt));
2323         LASSERT(osd_write_locked(env, obj));
2324         LASSERT(th != NULL);
2325
2326         OSD_EXEC_OP(th, ref_del);
2327
2328         cfs_spin_lock(&obj->oo_guard);
2329         LASSERT(inode->i_nlink > 0);
2330         inode->i_nlink--;
2331         /* If this is/was a many-subdir directory (nlink > LDISKFS_LINK_MAX)
2332          * then the nlink count is 1. Don't let it be set to 0 or the directory
2333          * inode will be deleted incorrectly. */
2334         if (S_ISDIR(inode->i_mode) && inode->i_nlink == 0)
2335                 inode->i_nlink++;
2336         cfs_spin_unlock(&obj->oo_guard);
2337         inode->i_sb->s_op->dirty_inode(inode);
2338         LINVRNT(osd_invariant(obj));
2339
2340         return 0;
2341 }
2342
2343 /*
2344  * Get the 64-bit version for an inode.
2345  */
2346 static int osd_object_version_get(const struct lu_env *env,
2347                                   struct dt_object *dt, dt_obj_version_t *ver)
2348 {
2349         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2350
2351         CDEBUG(D_INODE, "Get version "LPX64" for inode %lu\n",
2352                LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2353         *ver = LDISKFS_I(inode)->i_fs_version;
2354         return 0;
2355 }
2356
2357 /*
2358  * Concurrency: @dt is read locked.
2359  */
2360 static int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
2361                          struct lu_buf *buf, const char *name,
2362                          struct lustre_capa *capa)
2363 {
2364         struct osd_object      *obj    = osd_dt_obj(dt);
2365         struct inode           *inode  = obj->oo_inode;
2366         struct osd_thread_info *info   = osd_oti_get(env);
2367         struct dentry          *dentry = &info->oti_obj_dentry;
2368
2369         /* version get is not real XATTR but uses xattr API */
2370         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2371                 /* for version we are just using xattr API but change inode
2372                  * field instead */
2373                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2374                 osd_object_version_get(env, dt, buf->lb_buf);
2375                 return sizeof(dt_obj_version_t);
2376         }
2377
2378         LASSERT(dt_object_exists(dt));
2379         LASSERT(inode->i_op != NULL && inode->i_op->getxattr != NULL);
2380         LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
2381
2382         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2383                 return -EACCES;
2384
2385         dentry->d_inode = inode;
2386         return inode->i_op->getxattr(dentry, name, buf->lb_buf, buf->lb_len);
2387 }
2388
2389
2390 static int osd_declare_xattr_set(const struct lu_env *env,
2391                                  struct dt_object *dt,
2392                                  const struct lu_buf *buf, const char *name,
2393                                  int fl, struct thandle *handle)
2394 {
2395         struct osd_thandle *oh;
2396
2397         LASSERT(handle != NULL);
2398
2399         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2400                 /* no credits for version */
2401                 return 0;
2402         }
2403
2404         oh = container_of0(handle, struct osd_thandle, ot_super);
2405         LASSERT(oh->ot_handle == NULL);
2406
2407         OSD_DECLARE_OP(oh, xattr_set);
2408         oh->ot_credits += osd_dto_credits_noquota[DTO_XATTR_SET];
2409
2410         return 0;
2411 }
2412
2413 /*
2414  * Set the 64-bit version for object
2415  */
2416 static void osd_object_version_set(const struct lu_env *env,
2417                                    struct dt_object *dt,
2418                                    dt_obj_version_t *new_version)
2419 {
2420         struct inode *inode = osd_dt_obj(dt)->oo_inode;
2421
2422         CDEBUG(D_INODE, "Set version "LPX64" (old "LPX64") for inode %lu\n",
2423                *new_version, LDISKFS_I(inode)->i_fs_version, inode->i_ino);
2424
2425         LDISKFS_I(inode)->i_fs_version = *new_version;
2426         /** Version is set after all inode operations are finished,
2427          *  so we should mark it dirty here */
2428         inode->i_sb->s_op->dirty_inode(inode);
2429 }
2430
2431 /*
2432  * Concurrency: @dt is write locked.
2433  */
2434 static int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
2435                          const struct lu_buf *buf, const char *name, int fl,
2436                          struct thandle *handle, struct lustre_capa *capa)
2437 {
2438         LASSERT(handle != NULL);
2439
2440         /* version set is not real XATTR */
2441         if (strcmp(name, XATTR_NAME_VERSION) == 0) {
2442                 /* for version we are just using xattr API but change inode
2443                  * field instead */
2444                 LASSERT(buf->lb_len == sizeof(dt_obj_version_t));
2445                 osd_object_version_set(env, dt, buf->lb_buf);
2446                 return sizeof(dt_obj_version_t);
2447         }
2448
2449         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
2450                 return -EACCES;
2451
2452         OSD_EXEC_OP(handle, xattr_set);
2453         return __osd_xattr_set(env, dt, buf, name, fl);
2454 }
2455
2456 /*
2457  * Concurrency: @dt is read locked.
2458  */
2459 static int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
2460                           struct lu_buf *buf, struct lustre_capa *capa)
2461 {
2462         struct osd_object      *obj    = osd_dt_obj(dt);
2463         struct inode           *inode  = obj->oo_inode;
2464         struct osd_thread_info *info   = osd_oti_get(env);
2465         struct dentry          *dentry = &info->oti_obj_dentry;
2466
2467         LASSERT(dt_object_exists(dt));
2468         LASSERT(inode->i_op != NULL && inode->i_op->listxattr != NULL);
2469         LASSERT(osd_read_locked(env, obj) || osd_write_locked(env, obj));
2470
2471         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_READ))
2472                 return -EACCES;
2473
2474         dentry->d_inode = inode;
2475         return inode->i_op->listxattr(dentry, buf->lb_buf, buf->lb_len);
2476 }
2477
2478 static int osd_declare_xattr_del(const struct lu_env *env,
2479                                  struct dt_object *dt, const char *name,
2480                                  struct thandle *handle)
2481 {
2482         struct osd_thandle *oh;
2483
2484         LASSERT(dt_object_exists(dt));
2485         LASSERT(handle != NULL);
2486
2487         oh = container_of0(handle, struct osd_thandle, ot_super);
2488         LASSERT(oh->ot_handle == NULL);
2489
2490         OSD_DECLARE_OP(oh, xattr_set);
2491         oh->ot_credits += osd_dto_credits_noquota[DTO_XATTR_SET];
2492
2493         return 0;
2494 }
2495
2496 /*
2497  * Concurrency: @dt is write locked.
2498  */
2499 static int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
2500                          const char *name, struct thandle *handle,
2501                          struct lustre_capa *capa)
2502 {
2503         struct osd_object      *obj    = osd_dt_obj(dt);
2504         struct inode           *inode  = obj->oo_inode;
2505         struct osd_thread_info *info   = osd_oti_get(env);
2506         struct dentry          *dentry = &info->oti_obj_dentry;
2507         int                     rc;
2508
2509         LASSERT(dt_object_exists(dt));
2510         LASSERT(inode->i_op != NULL && inode->i_op->removexattr != NULL);
2511         LASSERT(osd_write_locked(env, obj));
2512         LASSERT(handle != NULL);
2513
2514         if (osd_object_auth(env, dt, capa, CAPA_OPC_META_WRITE))
2515                 return -EACCES;
2516
2517         OSD_EXEC_OP(handle, xattr_set);
2518
2519         dentry->d_inode = inode;
2520         rc = inode->i_op->removexattr(dentry, name);
2521         return rc;
2522 }
2523
2524 static struct obd_capa *osd_capa_get(const struct lu_env *env,
2525                                      struct dt_object *dt,
2526                                      struct lustre_capa *old,
2527                                      __u64 opc)
2528 {
2529         struct osd_thread_info *info = osd_oti_get(env);
2530         const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
2531         struct osd_object *obj = osd_dt_obj(dt);
2532         struct osd_device *dev = osd_obj2dev(obj);
2533         struct lustre_capa_key *key = &info->oti_capa_key;
2534         struct lustre_capa *capa = &info->oti_capa;
2535         struct obd_capa *oc;
2536         struct md_capainfo *ci;
2537         int rc;
2538         ENTRY;
2539
2540         if (!dev->od_fl_capa)
2541                 RETURN(ERR_PTR(-ENOENT));
2542
2543         LASSERT(dt_object_exists(dt));
2544         LINVRNT(osd_invariant(obj));
2545
2546         /* renewal sanity check */
2547         if (old && osd_object_auth(env, dt, old, opc))
2548                 RETURN(ERR_PTR(-EACCES));
2549
2550         ci = md_capainfo(env);
2551         if (unlikely(!ci))
2552                 RETURN(ERR_PTR(-ENOENT));
2553
2554         switch (ci->mc_auth) {
2555         case LC_ID_NONE:
2556                 RETURN(NULL);
2557         case LC_ID_PLAIN:
2558                 capa->lc_uid = obj->oo_inode->i_uid;
2559                 capa->lc_gid = obj->oo_inode->i_gid;
2560                 capa->lc_flags = LC_ID_PLAIN;
2561                 break;
2562         case LC_ID_CONVERT: {
2563                 __u32 d[4], s[4];
2564
2565                 s[0] = obj->oo_inode->i_uid;
2566                 cfs_get_random_bytes(&(s[1]), sizeof(__u32));
2567                 s[2] = obj->oo_inode->i_gid;
2568                 cfs_get_random_bytes(&(s[3]), sizeof(__u32));
2569                 rc = capa_encrypt_id(d, s, key->lk_key, CAPA_HMAC_KEY_MAX_LEN);
2570                 if (unlikely(rc))
2571                         RETURN(ERR_PTR(rc));
2572
2573                 capa->lc_uid   = ((__u64)d[1] << 32) | d[0];
2574                 capa->lc_gid   = ((__u64)d[3] << 32) | d[2];
2575                 capa->lc_flags = LC_ID_CONVERT;
2576                 break;
2577         }
2578         default:
2579                 RETURN(ERR_PTR(-EINVAL));
2580         }
2581
2582         capa->lc_fid = *fid;
2583         capa->lc_opc = opc;
2584         capa->lc_flags |= dev->od_capa_alg << 24;
2585         capa->lc_timeout = dev->od_capa_timeout;
2586         capa->lc_expiry = 0;
2587
2588         oc = capa_lookup(dev->od_capa_hash, capa, 1);
2589         if (oc) {
2590                 LASSERT(!capa_is_expired(oc));
2591                 RETURN(oc);
2592         }
2593
2594         cfs_spin_lock(&capa_lock);
2595         *key = dev->od_capa_keys[1];
2596         cfs_spin_unlock(&capa_lock);
2597
2598         capa->lc_keyid = key->lk_keyid;
2599         capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
2600
2601         rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
2602         if (rc) {
2603                 DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
2604                 RETURN(ERR_PTR(rc));
2605         }
2606
2607         oc = capa_add(dev->od_capa_hash, capa);
2608         RETURN(oc);
2609 }
2610
2611 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt)
2612 {
2613         struct osd_object      *obj    = osd_dt_obj(dt);
2614         struct inode           *inode  = obj->oo_inode;
2615         struct osd_thread_info *info   = osd_oti_get(env);
2616         struct dentry          *dentry = &info->oti_obj_dentry;
2617         struct file            *file   = &info->oti_file;
2618         int                     rc;
2619
2620         ENTRY;
2621
2622         dentry->d_inode = inode;
2623         file->f_dentry = dentry;
2624         file->f_mapping = inode->i_mapping;
2625         file->f_op = inode->i_fop;
2626         LOCK_INODE_MUTEX(inode);
2627         rc = file->f_op->fsync(file, dentry, 0);
2628         UNLOCK_INODE_MUTEX(inode);
2629         RETURN(rc);
2630 }
2631
2632 static int osd_data_get(const struct lu_env *env, struct dt_object *dt,
2633                         void **data)
2634 {
2635         struct osd_object *obj = osd_dt_obj(dt);
2636         ENTRY;
2637
2638         *data = (void *)obj->oo_inode;
2639         RETURN(0);
2640 }
2641
2642 /*
2643  * Index operations.
2644  */
2645
2646 static int osd_iam_index_probe(const struct lu_env *env, struct osd_object *o,
2647                            const struct dt_index_features *feat)
2648 {
2649         struct iam_descr *descr;
2650
2651         if (osd_object_is_root(o))
2652                 return feat == &dt_directory_features;
2653
2654         LASSERT(o->oo_dir != NULL);
2655
2656         descr = o->oo_dir->od_container.ic_descr;
2657         if (feat == &dt_directory_features) {
2658                 if (descr->id_rec_size == sizeof(struct osd_fid_pack))
2659                         return 1;
2660                 else
2661                         return 0;
2662         } else {
2663                 return
2664                         feat->dif_keysize_min <= descr->id_key_size &&
2665                         descr->id_key_size <= feat->dif_keysize_max &&
2666                         feat->dif_recsize_min <= descr->id_rec_size &&
2667                         descr->id_rec_size <= feat->dif_recsize_max &&
2668                         !(feat->dif_flags & (DT_IND_VARKEY |
2669                                              DT_IND_VARREC | DT_IND_NONUNQ)) &&
2670                         ergo(feat->dif_flags & DT_IND_UPDATE,
2671                              1 /* XXX check that object (and file system) is
2672                                 * writable */);
2673         }
2674 }
2675
2676 static int osd_iam_container_init(const struct lu_env *env,
2677                                   struct osd_object *obj,
2678                                   struct osd_directory *dir)
2679 {
2680         struct iam_container *bag = &dir->od_container;
2681         int result;
2682
2683         result = iam_container_init(bag, &dir->od_descr, obj->oo_inode);
2684         if (result != 0)
2685                 return result;
2686
2687         result = iam_container_setup(bag);
2688         if (result != 0)
2689                 goto out;
2690
2691         if (osd_obj2dev(obj)->od_iop_mode) {
2692                 u32 ptr = bag->ic_descr->id_ops->id_root_ptr(bag);
2693
2694                 bag->ic_root_bh = ldiskfs_bread(NULL, obj->oo_inode,
2695                                                 ptr, 0, &result);
2696         }
2697
2698  out:
2699         if (result == 0)
2700                 obj->oo_dt.do_index_ops = &osd_index_iam_ops;
2701         else
2702                 iam_container_fini(bag);
2703
2704         return result;
2705 }
2706
2707
2708 /*
2709  * Concurrency: no external locking is necessary.
2710  */
2711 static int osd_index_try(const struct lu_env *env, struct dt_object *dt,
2712                          const struct dt_index_features *feat)
2713 {
2714         int                      result;
2715         int                      skip_iam = 0;
2716         struct osd_object       *obj = osd_dt_obj(dt);
2717         struct osd_device       *osd = osd_obj2dev(obj);
2718
2719         LINVRNT(osd_invariant(obj));
2720         LASSERT(dt_object_exists(dt));
2721
2722         if (osd_object_is_root(obj)) {
2723                 dt->do_index_ops = &osd_index_ea_ops;
2724                 result = 0;
2725         } else if (feat == &dt_directory_features && osd->od_iop_mode) {
2726                 dt->do_index_ops = &osd_index_ea_ops;
2727                 if (S_ISDIR(obj->oo_inode->i_mode))
2728                         result = 0;
2729                 else
2730                         result = -ENOTDIR;
2731                 skip_iam = 1;
2732         } else if (unlikely(feat == &dt_otable_features)) {
2733                 dt->do_index_ops = &osd_otable_ops;
2734                 return 0;
2735         } else if (feat == &dt_acct_features) {
2736                 dt->do_index_ops = &osd_acct_index_ops;
2737                 result = 0;
2738                 skip_iam = 1;
2739         } else if (!osd_has_index(obj)) {
2740                 struct osd_directory *dir;
2741
2742                 OBD_ALLOC_PTR(dir);
2743                 if (dir != NULL) {
2744
2745                         cfs_spin_lock(&obj->oo_guard);
2746                         if (obj->oo_dir == NULL)
2747                                 obj->oo_dir = dir;
2748                         else
2749                                 /*
2750                                  * Concurrent thread allocated container data.
2751                                  */
2752                                 OBD_FREE_PTR(dir);
2753                         cfs_spin_unlock(&obj->oo_guard);
2754                         /*
2755                          * Now, that we have container data, serialize its
2756                          * initialization.
2757                          */
2758                         cfs_down_write(&obj->oo_ext_idx_sem);
2759                         /*
2760                          * recheck under lock.
2761                          */
2762                         if (!osd_has_index(obj))
2763                                 result = osd_iam_container_init(env, obj, dir);
2764                         else
2765                                 result = 0;
2766                         cfs_up_write(&obj->oo_ext_idx_sem);
2767                 } else {
2768                         result = -ENOMEM;
2769                 }
2770         } else {
2771                 result = 0;
2772         }
2773
2774         if (result == 0 && skip_iam == 0) {
2775                 if (!osd_iam_index_probe(env, obj, feat))
2776                         result = -ENOTDIR;
2777         }
2778         LINVRNT(osd_invariant(obj));
2779
2780         return result;
2781 }
2782
2783 static int osd_otable_it_attr_get(const struct lu_env *env,
2784                                  struct dt_object *dt,
2785                                  struct lu_attr *attr,
2786                                  struct lustre_capa *capa)
2787 {
2788         attr->la_valid = 0;
2789         return 0;
2790 }
2791
2792 static const struct dt_object_operations osd_obj_ops = {
2793         .do_read_lock         = osd_object_read_lock,
2794         .do_write_lock        = osd_object_write_lock,
2795         .do_read_unlock       = osd_object_read_unlock,
2796         .do_write_unlock      = osd_object_write_unlock,
2797         .do_write_locked      = osd_object_write_locked,
2798         .do_attr_get          = osd_attr_get,
2799         .do_declare_attr_set  = osd_declare_attr_set,
2800         .do_attr_set          = osd_attr_set,
2801         .do_ah_init           = osd_ah_init,
2802         .do_declare_create    = osd_declare_object_create,
2803         .do_create            = osd_object_create,
2804         .do_declare_destroy   = osd_declare_object_destroy,
2805         .do_destroy           = osd_object_destroy,
2806         .do_index_try         = osd_index_try,
2807         .do_declare_ref_add   = osd_declare_object_ref_add,
2808         .do_ref_add           = osd_object_ref_add,
2809         .do_declare_ref_del   = osd_declare_object_ref_del,
2810         .do_ref_del           = osd_object_ref_del,
2811         .do_xattr_get         = osd_xattr_get,
2812         .do_declare_xattr_set = osd_declare_xattr_set,
2813         .do_xattr_set         = osd_xattr_set,
2814         .do_declare_xattr_del = osd_declare_xattr_del,
2815         .do_xattr_del         = osd_xattr_del,
2816         .do_xattr_list        = osd_xattr_list,
2817         .do_capa_get          = osd_capa_get,
2818         .do_object_sync       = osd_object_sync,
2819         .do_data_get          = osd_data_get,
2820 };
2821
2822 /**
2823  * dt_object_operations for interoperability mode
2824  * (i.e. to run 2.0 mds on 1.8 disk) (b11826)
2825  */
2826 static const struct dt_object_operations osd_obj_ea_ops = {
2827         .do_read_lock         = osd_object_read_lock,
2828         .do_write_lock        = osd_object_write_lock,
2829         .do_read_unlock       = osd_object_read_unlock,
2830         .do_write_unlock      = osd_object_write_unlock,
2831         .do_write_locked      = osd_object_write_locked,
2832         .do_attr_get          = osd_attr_get,
2833         .do_declare_attr_set  = osd_declare_attr_set,
2834         .do_attr_set          = osd_attr_set,
2835         .do_ah_init           = osd_ah_init,
2836         .do_declare_create    = osd_declare_object_create,
2837         .do_create            = osd_object_ea_create,
2838         .do_declare_destroy   = osd_declare_object_destroy,
2839         .do_destroy           = osd_object_destroy,
2840         .do_index_try         = osd_index_try,
2841         .do_declare_ref_add   = osd_declare_object_ref_add,
2842         .do_ref_add           = osd_object_ref_add,
2843         .do_declare_ref_del   = osd_declare_object_ref_del,
2844         .do_ref_del           = osd_object_ref_del,
2845         .do_xattr_get         = osd_xattr_get,
2846         .do_declare_xattr_set = osd_declare_xattr_set,
2847         .do_xattr_set         = osd_xattr_set,
2848         .do_declare_xattr_del = osd_declare_xattr_del,
2849         .do_xattr_del         = osd_xattr_del,
2850         .do_xattr_list        = osd_xattr_list,
2851         .do_capa_get          = osd_capa_get,
2852         .do_object_sync       = osd_object_sync,
2853         .do_data_get          = osd_data_get,
2854 };
2855
2856 static const struct dt_object_operations osd_obj_otable_it_ops = {
2857         .do_attr_get    = osd_otable_it_attr_get,
2858         .do_index_try   = osd_index_try,
2859 };
2860
2861 static int osd_index_declare_iam_delete(const struct lu_env *env,
2862                                         struct dt_object *dt,
2863                                         const struct dt_key *key,
2864                                         struct thandle *handle)
2865 {
2866         struct osd_thandle    *oh;
2867
2868         oh = container_of0(handle, struct osd_thandle, ot_super);
2869         LASSERT(oh->ot_handle == NULL);
2870
2871         OSD_DECLARE_OP(oh, delete);
2872         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_DELETE];
2873
2874         return 0;
2875 }
2876
2877 /**
2878  *      delete a (key, value) pair from index \a dt specified by \a key
2879  *
2880  *      \param  dt      osd index object
2881  *      \param  key     key for index
2882  *      \param  rec     record reference
2883  *      \param  handle  transaction handler
2884  *
2885  *      \retval  0  success
2886  *      \retval -ve   failure
2887  */
2888
2889 static int osd_index_iam_delete(const struct lu_env *env, struct dt_object *dt,
2890                                 const struct dt_key *key,
2891                                 struct thandle *handle,
2892                                 struct lustre_capa *capa)
2893 {
2894         struct osd_object     *obj = osd_dt_obj(dt);
2895         struct osd_thandle    *oh;
2896         struct iam_path_descr *ipd;
2897         struct iam_container  *bag = &obj->oo_dir->od_container;
2898         int                    rc;
2899
2900         ENTRY;
2901
2902         LINVRNT(osd_invariant(obj));
2903         LASSERT(dt_object_exists(dt));
2904         LASSERT(bag->ic_object == obj->oo_inode);
2905         LASSERT(handle != NULL);
2906
2907         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
2908                 RETURN(-EACCES);
2909
2910         OSD_EXEC_OP(handle, delete);
2911
2912         ipd = osd_idx_ipd_get(env, bag);
2913         if (unlikely(ipd == NULL))
2914                 RETURN(-ENOMEM);
2915
2916         oh = container_of0(handle, struct osd_thandle, ot_super);
2917         LASSERT(oh->ot_handle != NULL);
2918         LASSERT(oh->ot_handle->h_transaction != NULL);
2919
2920         rc = iam_delete(oh->ot_handle, bag, (const struct iam_key *)key, ipd);
2921         osd_ipd_put(env, bag, ipd);
2922         LINVRNT(osd_invariant(obj));
2923         RETURN(rc);
2924 }
2925
2926 static int osd_index_declare_ea_delete(const struct lu_env *env,
2927                                        struct dt_object *dt,
2928                                        const struct dt_key *key,
2929                                        struct thandle *handle)
2930 {
2931         struct osd_thandle *oh;
2932
2933         LASSERT(dt_object_exists(dt));
2934         LASSERT(handle != NULL);
2935
2936         oh = container_of0(handle, struct osd_thandle, ot_super);
2937         LASSERT(oh->ot_handle == NULL);
2938
2939         OSD_DECLARE_OP(oh, delete);
2940         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_DELETE];
2941
2942         LASSERT(osd_dt_obj(dt)->oo_inode);
2943         osd_declare_qid(dt, oh, USRQUOTA, osd_dt_obj(dt)->oo_inode->i_uid,
2944                         osd_dt_obj(dt)->oo_inode);
2945         osd_declare_qid(dt, oh, GRPQUOTA, osd_dt_obj(dt)->oo_inode->i_gid,
2946                         osd_dt_obj(dt)->oo_inode);
2947
2948         return 0;
2949 }
2950
2951 static inline int osd_get_fid_from_dentry(struct ldiskfs_dir_entry_2 *de,
2952                                           struct dt_rec *fid)
2953 {
2954         struct osd_fid_pack *rec;
2955         int                  rc = -ENODATA;
2956
2957         if (de->file_type & LDISKFS_DIRENT_LUFID) {
2958                 rec = (struct osd_fid_pack *) (de->name + de->name_len + 1);
2959                 rc = osd_fid_unpack((struct lu_fid *)fid, rec);
2960         }
2961         RETURN(rc);
2962 }
2963
2964 /**
2965  * Index delete function for interoperability mode (b11826).
2966  * It will remove the directory entry added by osd_index_ea_insert().
2967  * This entry is needed to maintain name->fid mapping.
2968  *
2969  * \param key,  key i.e. file entry to be deleted
2970  *
2971  * \retval   0, on success
2972  * \retval -ve, on error
2973  */
2974 static int osd_index_ea_delete(const struct lu_env *env, struct dt_object *dt,
2975                                const struct dt_key *key,
2976                                struct thandle *handle,
2977                                struct lustre_capa *capa)
2978 {
2979         struct osd_object          *obj    = osd_dt_obj(dt);
2980         struct inode               *dir    = obj->oo_inode;
2981         struct dentry              *dentry;
2982         struct osd_thandle         *oh;
2983         struct ldiskfs_dir_entry_2 *de;
2984         struct buffer_head         *bh;
2985         struct htree_lock          *hlock = NULL;
2986         int                         rc;
2987
2988         ENTRY;
2989
2990         LINVRNT(osd_invariant(obj));
2991         LASSERT(dt_object_exists(dt));
2992         LASSERT(handle != NULL);
2993
2994         OSD_EXEC_OP(handle, delete);
2995
2996         oh = container_of(handle, struct osd_thandle, ot_super);
2997         LASSERT(oh->ot_handle != NULL);
2998         LASSERT(oh->ot_handle->h_transaction != NULL);
2999
3000         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_DELETE))
3001                 RETURN(-EACCES);
3002
3003         dentry = osd_child_dentry_get(env, obj,
3004                                       (char *)key, strlen((char *)key));
3005
3006         if (obj->oo_hl_head != NULL) {
3007                 hlock = osd_oti_get(env)->oti_hlock;
3008                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3009                                    dir, LDISKFS_HLOCK_DEL);
3010         } else {
3011                 cfs_down_write(&obj->oo_ext_idx_sem);
3012         }
3013
3014         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
3015         if (bh) {
3016                 rc = ldiskfs_delete_entry(oh->ot_handle,
3017                                           dir, de, bh);
3018                 brelse(bh);
3019         } else {
3020                 rc = -ENOENT;
3021         }
3022         if (hlock != NULL)
3023                 ldiskfs_htree_unlock(hlock);
3024         else
3025                 cfs_up_write(&obj->oo_ext_idx_sem);
3026
3027         LASSERT(osd_invariant(obj));
3028         RETURN(rc);
3029 }
3030
3031 /**
3032  *      Lookup index for \a key and copy record to \a rec.
3033  *
3034  *      \param  dt      osd index object
3035  *      \param  key     key for index
3036  *      \param  rec     record reference
3037  *
3038  *      \retval  +ve  success : exact mach
3039  *      \retval  0    return record with key not greater than \a key
3040  *      \retval -ve   failure
3041  */
3042 static int osd_index_iam_lookup(const struct lu_env *env, struct dt_object *dt,
3043                                 struct dt_rec *rec, const struct dt_key *key,
3044                                 struct lustre_capa *capa)
3045 {
3046         struct osd_object      *obj = osd_dt_obj(dt);
3047         struct iam_path_descr  *ipd;
3048         struct iam_container   *bag = &obj->oo_dir->od_container;
3049         struct osd_thread_info *oti = osd_oti_get(env);
3050         struct iam_iterator    *it = &oti->oti_idx_it;
3051         struct iam_rec         *iam_rec;
3052         int                     rc;
3053
3054         ENTRY;
3055
3056         LASSERT(osd_invariant(obj));
3057         LASSERT(dt_object_exists(dt));
3058         LASSERT(bag->ic_object == obj->oo_inode);
3059
3060         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
3061                 RETURN(-EACCES);
3062
3063         ipd = osd_idx_ipd_get(env, bag);
3064         if (IS_ERR(ipd))
3065                 RETURN(-ENOMEM);
3066
3067         /* got ipd now we can start iterator. */
3068         iam_it_init(it, bag, 0, ipd);
3069
3070         rc = iam_it_get(it, (struct iam_key *)key);
3071         if (rc >= 0) {
3072                 if (S_ISDIR(obj->oo_inode->i_mode))
3073                         iam_rec = (struct iam_rec *)oti->oti_ldp;
3074                 else
3075                         iam_rec = (struct iam_rec *) rec;
3076
3077                 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)iam_rec);
3078                 if (S_ISDIR(obj->oo_inode->i_mode))
3079                         osd_fid_unpack((struct lu_fid *) rec,
3080                                        (struct osd_fid_pack *)iam_rec);
3081         }
3082         iam_it_put(it);
3083         iam_it_fini(it);
3084         osd_ipd_put(env, bag, ipd);
3085
3086         LINVRNT(osd_invariant(obj));
3087
3088         RETURN(rc);
3089 }
3090
3091 static int osd_index_declare_iam_insert(const struct lu_env *env,
3092                                         struct dt_object *dt,
3093                                         const struct dt_rec *rec,
3094                                         const struct dt_key *key,
3095                                         struct thandle *handle)
3096 {
3097         struct osd_thandle *oh;
3098
3099         LASSERT(dt_object_exists(dt));
3100         LASSERT(handle != NULL);
3101
3102         oh = container_of0(handle, struct osd_thandle, ot_super);
3103         LASSERT(oh->ot_handle == NULL);
3104
3105         OSD_DECLARE_OP(oh, insert);
3106         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_INSERT];
3107
3108         return 0;
3109 }
3110
3111 /**
3112  *      Inserts (key, value) pair in \a dt index object.
3113  *
3114  *      \param  dt      osd index object
3115  *      \param  key     key for index
3116  *      \param  rec     record reference
3117  *      \param  th      transaction handler
3118  *
3119  *      \retval  0  success
3120  *      \retval -ve failure
3121  */
3122 static int osd_index_iam_insert(const struct lu_env *env, struct dt_object *dt,
3123                                 const struct dt_rec *rec,
3124                                 const struct dt_key *key, struct thandle *th,
3125                                 struct lustre_capa *capa, int ignore_quota)
3126 {
3127         struct osd_object     *obj = osd_dt_obj(dt);
3128         struct iam_path_descr *ipd;
3129         struct osd_thandle    *oh;
3130         struct iam_container  *bag = &obj->oo_dir->od_container;
3131 #ifdef HAVE_QUOTA_SUPPORT
3132         cfs_cap_t              save = cfs_curproc_cap_pack();
3133 #endif
3134         struct osd_thread_info *oti = osd_oti_get(env);
3135         struct iam_rec         *iam_rec = (struct iam_rec *)oti->oti_ldp;
3136         int                     rc;
3137
3138         ENTRY;
3139
3140         LINVRNT(osd_invariant(obj));
3141         LASSERT(dt_object_exists(dt));
3142         LASSERT(bag->ic_object == obj->oo_inode);
3143         LASSERT(th != NULL);
3144
3145         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3146                 RETURN(-EACCES);
3147
3148         OSD_EXEC_OP(th, insert);
3149
3150         ipd = osd_idx_ipd_get(env, bag);
3151         if (unlikely(ipd == NULL))
3152                 RETURN(-ENOMEM);
3153
3154         oh = container_of0(th, struct osd_thandle, ot_super);
3155         LASSERT(oh->ot_handle != NULL);
3156         LASSERT(oh->ot_handle->h_transaction != NULL);
3157 #ifdef HAVE_QUOTA_SUPPORT
3158         if (ignore_quota)
3159                 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
3160         else
3161                 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
3162 #endif
3163         if (S_ISDIR(obj->oo_inode->i_mode))
3164                 osd_fid_pack((struct osd_fid_pack *)iam_rec, rec, &oti->oti_fid);
3165         else
3166                 iam_rec = (struct iam_rec *) rec;
3167         rc = iam_insert(oh->ot_handle, bag, (const struct iam_key *)key,
3168                         iam_rec, ipd);
3169 #ifdef HAVE_QUOTA_SUPPORT
3170         cfs_curproc_cap_unpack(save);
3171 #endif
3172         osd_ipd_put(env, bag, ipd);
3173         LINVRNT(osd_invariant(obj));
3174         RETURN(rc);
3175 }
3176
3177 /**
3178  * Calls ldiskfs_add_entry() to add directory entry
3179  * into the directory. This is required for
3180  * interoperability mode (b11826)
3181  *
3182  * \retval   0, on success
3183  * \retval -ve, on error
3184  */
3185 static int __osd_ea_add_rec(struct osd_thread_info *info,
3186                             struct osd_object *pobj, struct inode  *cinode,
3187                             const char *name, const struct dt_rec *fid,
3188                             struct htree_lock *hlock, struct thandle *th)
3189 {
3190         struct ldiskfs_dentry_param *ldp;
3191         struct dentry               *child;
3192         struct osd_thandle          *oth;
3193         int                          rc;
3194
3195         oth = container_of(th, struct osd_thandle, ot_super);
3196         LASSERT(oth->ot_handle != NULL);
3197         LASSERT(oth->ot_handle->h_transaction != NULL);
3198
3199         child = osd_child_dentry_get(info->oti_env, pobj, name, strlen(name));
3200
3201         /* XXX: remove fid_is_igif() check here.
3202          * IGIF check is just to handle insertion of .. when it is 'ROOT',
3203          * it is IGIF now but needs FID in dir entry as well for readdir
3204          * to work.
3205          * LU-838 should fix that and remove fid_is_igif() check */
3206         if (fid_is_igif((struct lu_fid *)fid) ||
3207             fid_is_norm((struct lu_fid *)fid)) {
3208                 ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3209                 osd_get_ldiskfs_dirent_param(ldp, fid);
3210                 child->d_fsdata = (void *)ldp;
3211         } else {
3212                 child->d_fsdata = NULL;
3213         }
3214         rc = osd_ldiskfs_add_entry(oth->ot_handle, child, cinode, hlock);
3215
3216         RETURN(rc);
3217 }
3218
3219 /**
3220  * Calls ldiskfs_add_dot_dotdot() to add dot and dotdot entries
3221  * into the directory.Also sets flags into osd object to
3222  * indicate dot and dotdot are created. This is required for
3223  * interoperability mode (b11826)
3224  *
3225  * \param dir   directory for dot and dotdot fixup.
3226  * \param obj   child object for linking
3227  *
3228  * \retval   0, on success
3229  * \retval -ve, on error
3230  */
3231 static int osd_add_dot_dotdot(struct osd_thread_info *info,
3232                               struct osd_object *dir,
3233                               struct inode  *parent_dir, const char *name,
3234                               const struct dt_rec *dot_fid,
3235                               const struct dt_rec *dot_dot_fid,
3236                               struct thandle *th)
3237 {
3238         struct inode                *inode = dir->oo_inode;
3239         struct ldiskfs_dentry_param *dot_ldp;
3240         struct ldiskfs_dentry_param *dot_dot_ldp;
3241         struct osd_thandle          *oth;
3242         int result = 0;
3243
3244         oth = container_of(th, struct osd_thandle, ot_super);
3245         LASSERT(oth->ot_handle->h_transaction != NULL);
3246         LASSERT(S_ISDIR(dir->oo_inode->i_mode));
3247
3248         if (strcmp(name, dot) == 0) {
3249                 if (dir->oo_compat_dot_created) {
3250                         result = -EEXIST;
3251                 } else {
3252                         LASSERT(inode == parent_dir);
3253                         dir->oo_compat_dot_created = 1;
3254                         result = 0;
3255                 }
3256         } else if(strcmp(name, dotdot) == 0) {
3257                 dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp;
3258                 dot_dot_ldp = (struct ldiskfs_dentry_param *)info->oti_ldp2;
3259
3260                 if (!dir->oo_compat_dot_created)
3261                         return -EINVAL;
3262                 if (!fid_is_igif((struct lu_fid *)dot_fid)) {
3263                         osd_get_ldiskfs_dirent_param(dot_ldp, dot_fid);
3264                         osd_get_ldiskfs_dirent_param(dot_dot_ldp, dot_dot_fid);
3265                 } else {
3266                         dot_ldp = NULL;
3267                         dot_dot_ldp = NULL;
3268                 }
3269                 /* in case of rename, dotdot is already created */
3270                 if (dir->oo_compat_dotdot_created) {
3271                         return __osd_ea_add_rec(info, dir, parent_dir, name,
3272                                                 dot_dot_fid, NULL, th);
3273                 }
3274
3275                 result = ldiskfs_add_dot_dotdot(oth->ot_handle, parent_dir,
3276                                                 inode, dot_ldp, dot_dot_ldp);
3277                 if (result == 0)
3278                        dir->oo_compat_dotdot_created = 1;
3279         }
3280
3281         return result;
3282 }
3283
3284
3285 /**
3286  * It will call the appropriate osd_add* function and return the
3287  * value, return by respective functions.
3288  */
3289 static int osd_ea_add_rec(const struct lu_env *env, struct osd_object *pobj,
3290                           struct inode *cinode, const char *name,
3291                           const struct dt_rec *fid, struct thandle *th)
3292 {
3293         struct osd_thread_info *info   = osd_oti_get(env);
3294         struct htree_lock      *hlock;
3295         int                     rc;
3296
3297         hlock = pobj->oo_hl_head != NULL ? info->oti_hlock : NULL;
3298
3299         if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' &&
3300                                                    name[2] =='\0'))) {
3301                 if (hlock != NULL) {
3302                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3303                                            pobj->oo_inode, 0);
3304                 } else {
3305                         cfs_down_write(&pobj->oo_ext_idx_sem);
3306                 }
3307                 rc = osd_add_dot_dotdot(info, pobj, cinode, name,
3308                      (struct dt_rec *)lu_object_fid(&pobj->oo_dt.do_lu),
3309                                         fid, th);
3310         } else {
3311                 if (hlock != NULL) {
3312                         ldiskfs_htree_lock(hlock, pobj->oo_hl_head,
3313                                            pobj->oo_inode, LDISKFS_HLOCK_ADD);
3314                 } else {
3315                         cfs_down_write(&pobj->oo_ext_idx_sem);
3316                 }
3317
3318                 rc = __osd_ea_add_rec(info, pobj, cinode, name, fid,
3319                                       hlock, th);
3320         }
3321         if (hlock != NULL)
3322                 ldiskfs_htree_unlock(hlock);
3323         else
3324                 cfs_up_write(&pobj->oo_ext_idx_sem);
3325
3326         return rc;
3327 }
3328
3329 static int
3330 osd_consistency_check(struct osd_thread_info *oti, struct osd_device *dev,
3331                       struct osd_idmap_cache *oic)
3332 {
3333         struct osd_scrub    *scrub = &dev->od_scrub;
3334         struct lu_fid       *fid   = &oic->oic_fid;
3335         struct osd_inode_id *id    = &oti->oti_id;
3336         int                  once  = 0;
3337         int                  rc;
3338         ENTRY;
3339
3340 again:
3341         rc = osd_oi_lookup(oti, dev, fid, id);
3342         if (rc != 0 && rc != -ENOENT)
3343                 RETURN(rc);
3344
3345         if (rc == 0 && osd_id_eq(id, &oic->oic_lid))
3346                 RETURN(0);
3347
3348         if (thread_is_running(&scrub->os_thread)) {
3349                 rc = osd_oii_insert(dev, oic, rc == -ENOENT);
3350                 /* There is race condition between osd_oi_lookup and OI scrub.
3351                  * The OI scrub finished just after osd_oi_lookup() failure.
3352                  * Under such case, it is unnecessary to trigger OI scrub again,
3353                  * but try to call osd_oi_lookup() again. */
3354                 if (unlikely(rc == -EAGAIN))
3355                         goto again;
3356
3357                 RETURN(rc);
3358         }
3359
3360         if (!scrub->os_no_scrub && ++once == 1) {
3361                 CDEBUG(D_LFSCK, "Trigger OI scrub by RPC for "DFID"\n",
3362                        PFID(fid));
3363                 rc = osd_scrub_start(dev);
3364                 LCONSOLE_ERROR("%.16s: trigger OI scrub by RPC for "DFID
3365                                ", rc = %d [2]\n",
3366                                LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name,
3367                                PFID(fid), rc);
3368                 if (rc == 0)
3369                         goto again;
3370         }
3371
3372         RETURN(rc = -EREMCHG);
3373 }
3374
3375 /**
3376  * Calls ->lookup() to find dentry. From dentry get inode and
3377  * read inode's ea to get fid. This is required for  interoperability
3378  * mode (b11826)
3379  *
3380  * \retval   0, on success
3381  * \retval -ve, on error
3382  */
3383 static int osd_ea_lookup_rec(const struct lu_env *env, struct osd_object *obj,
3384                              struct dt_rec *rec, const struct dt_key *key)
3385 {
3386         struct inode               *dir    = obj->oo_inode;
3387         struct dentry              *dentry;
3388         struct ldiskfs_dir_entry_2 *de;
3389         struct buffer_head         *bh;
3390         struct lu_fid              *fid = (struct lu_fid *) rec;
3391         struct htree_lock          *hlock = NULL;
3392         int                         ino;
3393         int                         rc;
3394
3395         LASSERT(dir->i_op != NULL && dir->i_op->lookup != NULL);
3396
3397         dentry = osd_child_dentry_get(env, obj,
3398                                       (char *)key, strlen((char *)key));
3399
3400         if (obj->oo_hl_head != NULL) {
3401                 hlock = osd_oti_get(env)->oti_hlock;
3402                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
3403                                    dir, LDISKFS_HLOCK_LOOKUP);
3404         } else {
3405                 cfs_down_read(&obj->oo_ext_idx_sem);
3406         }
3407
3408         bh = osd_ldiskfs_find_entry(dir, dentry, &de, hlock);
3409         if (bh) {
3410                 struct osd_thread_info *oti = osd_oti_get(env);
3411                 struct osd_idmap_cache *oic = &oti->oti_cache;
3412                 struct osd_device *dev = osd_obj2dev(obj);
3413                 struct osd_scrub *scrub = &dev->od_scrub;
3414                 struct scrub_file *sf = &scrub->os_file;
3415
3416                 ino = le32_to_cpu(de->inode);
3417                 rc = osd_get_fid_from_dentry(de, rec);
3418
3419                 /* done with de, release bh */
3420                 brelse(bh);
3421                 if (rc != 0)
3422                         rc = osd_ea_fid_get(env, obj, ino, fid, &oic->oic_lid);
3423                 else
3424                         osd_id_gen(&oic->oic_lid, ino, OSD_OII_NOGEN);
3425
3426                 if (rc != 0 || !fid_is_norm(fid))
3427                         GOTO(out, rc);
3428
3429                 oic->oic_fid = *fid;
3430                 if ((scrub->os_pos_current <= ino) &&
3431                     (sf->sf_flags & SF_INCONSISTENT ||
3432                      ldiskfs_test_bit(osd_oi_fid2idx(dev, fid),
3433                                       sf->sf_oi_bitmap)))
3434                         rc = osd_consistency_check(oti, dev, oic);
3435         } else {
3436                 rc = -ENOENT;
3437         }
3438
3439         GOTO(out, rc);
3440
3441 out:
3442         if (hlock != NULL)
3443                 ldiskfs_htree_unlock(hlock);
3444         else
3445                 cfs_up_read(&obj->oo_ext_idx_sem);
3446         return rc;
3447 }
3448
3449 /**
3450  * Find the osd object for given fid.
3451  *
3452  * \param fid need to find the osd object having this fid
3453  *
3454  * \retval osd_object on success
3455  * \retval        -ve on error
3456  */
3457 struct osd_object *osd_object_find(const struct lu_env *env,
3458                                    struct dt_object *dt,
3459                                    const struct lu_fid *fid)
3460 {
3461         struct lu_device  *ludev = dt->do_lu.lo_dev;
3462         struct osd_object *child = NULL;
3463         struct lu_object  *luch;
3464         struct lu_object  *lo;
3465
3466         luch = lu_object_find(env, ludev, fid, NULL);
3467         if (!IS_ERR(luch)) {
3468                 if (lu_object_exists(luch)) {
3469                         lo = lu_object_locate(luch->lo_header, ludev->ld_type);
3470                         if (lo != NULL)
3471                                 child = osd_obj(lo);
3472                         else
3473                                 LU_OBJECT_DEBUG(D_ERROR, env, luch,
3474                                                 "lu_object can't be located"
3475                                                 DFID"\n", PFID(fid));
3476
3477                         if (child == NULL) {
3478                                 lu_object_put(env, luch);
3479                                 CERROR("Unable to get osd_object\n");
3480                                 child = ERR_PTR(-ENOENT);
3481                         }
3482                 } else {
3483                         LU_OBJECT_DEBUG(D_ERROR, env, luch,
3484                                         "lu_object does not exists "DFID"\n",
3485                                         PFID(fid));
3486                         lu_object_put(env, luch);
3487                         child = ERR_PTR(-ENOENT);
3488                 }
3489         } else
3490                 child = (void *)luch;
3491
3492         return child;
3493 }
3494
3495 /**
3496  * Put the osd object once done with it.
3497  *
3498  * \param obj osd object that needs to be put
3499  */
3500 static inline void osd_object_put(const struct lu_env *env,
3501                                   struct osd_object *obj)
3502 {
3503         lu_object_put(env, &obj->oo_dt.do_lu);
3504 }
3505
3506 static int osd_index_declare_ea_insert(const struct lu_env *env,
3507                                        struct dt_object *dt,
3508                                        const struct dt_rec *rec,
3509                                        const struct dt_key *key,
3510                                        struct thandle *handle)
3511 {
3512         struct osd_thandle *oh;
3513
3514         LASSERT(dt_object_exists(dt));
3515         LASSERT(handle != NULL);
3516
3517         oh = container_of0(handle, struct osd_thandle, ot_super);
3518         LASSERT(oh->ot_handle == NULL);
3519
3520         OSD_DECLARE_OP(oh, insert);
3521         oh->ot_credits += osd_dto_credits_noquota[DTO_INDEX_INSERT];
3522
3523         LASSERT(osd_dt_obj(dt)->oo_inode);
3524         osd_declare_qid(dt, oh, USRQUOTA, osd_dt_obj(dt)->oo_inode->i_uid,
3525                         osd_dt_obj(dt)->oo_inode);
3526         osd_declare_qid(dt, oh, GRPQUOTA, osd_dt_obj(dt)->oo_inode->i_gid,
3527                         osd_dt_obj(dt)->oo_inode);
3528
3529         return 0;
3530 }
3531
3532 /**
3533  * Index add function for interoperability mode (b11826).
3534  * It will add the directory entry.This entry is needed to
3535  * maintain name->fid mapping.
3536  *
3537  * \param key it is key i.e. file entry to be inserted
3538  * \param rec it is value of given key i.e. fid
3539  *
3540  * \retval   0, on success
3541  * \retval -ve, on error
3542  */
3543 static int osd_index_ea_insert(const struct lu_env *env, struct dt_object *dt,
3544                                const struct dt_rec *rec,
3545                                const struct dt_key *key, struct thandle *th,
3546                                struct lustre_capa *capa, int ignore_quota)
3547 {
3548         struct osd_object *obj   = osd_dt_obj(dt);
3549         struct lu_fid     *fid   = (struct lu_fid *) rec;
3550         const char        *name  = (const char *)key;
3551         struct osd_object *child;
3552 #ifdef HAVE_QUOTA_SUPPORT
3553         cfs_cap_t          save  = cfs_curproc_cap_pack();
3554 #endif
3555         int                rc;
3556
3557         ENTRY;
3558
3559         LASSERT(osd_invariant(obj));
3560         LASSERT(dt_object_exists(dt));
3561         LASSERT(th != NULL);
3562
3563         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_INSERT))
3564                 RETURN(-EACCES);
3565
3566         child = osd_object_find(env, dt, fid);
3567         if (!IS_ERR(child)) {
3568 #ifdef HAVE_QUOTA_SUPPORT
3569                 if (ignore_quota)
3570                         cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
3571                 else
3572                         cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
3573 #endif
3574                 rc = osd_ea_add_rec(env, obj, child->oo_inode, name, rec, th);
3575 #ifdef HAVE_QUOTA_SUPPORT
3576                 cfs_curproc_cap_unpack(save);
3577 #endif
3578                 osd_object_put(env, child);
3579         } else {
3580                 rc = PTR_ERR(child);
3581         }
3582
3583         LASSERT(osd_invariant(obj));
3584         RETURN(rc);
3585 }
3586
3587 /**
3588  *  Initialize osd Iterator for given osd index object.
3589  *
3590  *  \param  dt      osd index object
3591  */
3592
3593 static struct dt_it *osd_it_iam_init(const struct lu_env *env,
3594                                      struct dt_object *dt,
3595                                      __u32 unused,
3596                                      struct lustre_capa *capa)
3597 {
3598         struct osd_it_iam      *it;
3599         struct osd_thread_info *oti = osd_oti_get(env);
3600         struct osd_object      *obj = osd_dt_obj(dt);
3601         struct lu_object       *lo  = &dt->do_lu;
3602         struct iam_path_descr  *ipd;
3603         struct iam_container   *bag = &obj->oo_dir->od_container;
3604
3605         LASSERT(lu_object_exists(lo));
3606
3607         if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
3608                 return ERR_PTR(-EACCES);
3609
3610         it = &oti->oti_it;
3611         ipd = osd_it_ipd_get(env, bag);
3612         if (likely(ipd != NULL)) {
3613                 it->oi_obj = obj;
3614                 it->oi_ipd = ipd;
3615                 lu_object_get(lo);
3616                 iam_it_init(&it->oi_it, bag, IAM_IT_MOVE, ipd);
3617                 return (struct dt_it *)it;
3618         }
3619         return ERR_PTR(-ENOMEM);
3620 }
3621
3622 /**
3623  * free given Iterator.
3624  */
3625
3626 static void osd_it_iam_fini(const struct lu_env *env, struct dt_it *di)
3627 {
3628         struct osd_it_iam *it = (struct osd_it_iam *)di;
3629         struct osd_object *obj = it->oi_obj;
3630
3631         iam_it_fini(&it->oi_it);
3632         osd_ipd_put(env, &obj->oo_dir->od_container, it->oi_ipd);
3633         lu_object_put(env, &obj->oo_dt.do_lu);
3634 }
3635
3636 /**
3637  *  Move Iterator to record specified by \a key
3638  *
3639  *  \param  di      osd iterator
3640  *  \param  key     key for index
3641  *
3642  *  \retval +ve  di points to record with least key not larger than key
3643  *  \retval  0   di points to exact matched key
3644  *  \retval -ve  failure
3645  */
3646
3647 static int osd_it_iam_get(const struct lu_env *env,
3648                           struct dt_it *di, const struct dt_key *key)
3649 {
3650         struct osd_it_iam *it = (struct osd_it_iam *)di;
3651
3652         return iam_it_get(&it->oi_it, (const struct iam_key *)key);
3653 }
3654
3655 /**
3656  *  Release Iterator
3657  *
3658  *  \param  di      osd iterator
3659  */
3660
3661 static void osd_it_iam_put(const struct lu_env *env, struct dt_it *di)
3662 {
3663         struct osd_it_iam *it = (struct osd_it_iam *)di;
3664
3665         iam_it_put(&it->oi_it);
3666 }
3667
3668 /**
3669  *  Move iterator by one record
3670  *
3671  *  \param  di      osd iterator
3672  *
3673  *  \retval +1   end of container reached
3674  *  \retval  0   success
3675  *  \retval -ve  failure
3676  */
3677
3678 static int osd_it_iam_next(const struct lu_env *env, struct dt_it *di)
3679 {
3680         struct osd_it_iam *it = (struct osd_it_iam *)di;
3681
3682         return iam_it_next(&it->oi_it);
3683 }
3684
3685 /**
3686  * Return pointer to the key under iterator.
3687  */
3688
3689 static struct dt_key *osd_it_iam_key(const struct lu_env *env,
3690                                  const struct dt_it *di)
3691 {
3692         struct osd_it_iam *it = (struct osd_it_iam *)di;
3693
3694         return (struct dt_key *)iam_it_key_get(&it->oi_it);
3695 }
3696
3697 /**
3698  * Return size of key under iterator (in bytes)
3699  */
3700
3701 static int osd_it_iam_key_size(const struct lu_env *env, const struct dt_it *di)
3702 {
3703         struct osd_it_iam *it = (struct osd_it_iam *)di;
3704
3705         return iam_it_key_size(&it->oi_it);
3706 }
3707
3708 static inline void osd_it_append_attrs(struct lu_dirent *ent, __u32 attr,
3709                                        int len, __u16 type)
3710 {
3711         struct luda_type *lt;
3712         const unsigned    align = sizeof(struct luda_type) - 1;
3713
3714         /* check if file type is required */
3715         if (attr & LUDA_TYPE) {
3716                         len = (len + align) & ~align;
3717
3718                         lt = (void *) ent->lde_name + len;
3719                         lt->lt_type = cpu_to_le16(CFS_DTTOIF(type));
3720                         ent->lde_attrs |= LUDA_TYPE;
3721         }
3722
3723         ent->lde_attrs = cpu_to_le32(ent->lde_attrs);
3724 }
3725
3726 /**
3727  * build lu direct from backend fs dirent.
3728  */
3729
3730 static inline void osd_it_pack_dirent(struct lu_dirent *ent,
3731                                       struct lu_fid *fid, __u64 offset,
3732                                       char *name, __u16 namelen,
3733                                       __u16 type, __u32 attr)
3734 {
3735         fid_cpu_to_le(&ent->lde_fid, fid);
3736         ent->lde_attrs = LUDA_FID;
3737
3738         ent->lde_hash = cpu_to_le64(offset);
3739         ent->lde_reclen = cpu_to_le16(lu_dirent_calc_size(namelen, attr));
3740
3741         strncpy(ent->lde_name, name, namelen);
3742         ent->lde_namelen = cpu_to_le16(namelen);
3743
3744         /* append lustre attributes */
3745         osd_it_append_attrs(ent, attr, namelen, type);
3746 }
3747
3748 /**
3749  * Return pointer to the record under iterator.
3750  */
3751 static int osd_it_iam_rec(const struct lu_env *env,
3752                           const struct dt_it *di,
3753                           struct dt_rec *dtrec, __u32 attr)
3754 {
3755         struct osd_it_iam      *it   = (struct osd_it_iam *)di;
3756         struct osd_thread_info *info = osd_oti_get(env);
3757         ENTRY;
3758
3759         if (S_ISDIR(it->oi_obj->oo_inode->i_mode)) {
3760                 const struct osd_fid_pack *rec;
3761                 struct lu_fid             *fid = &info->oti_fid;
3762                 struct lu_dirent          *lde = (struct lu_dirent *)dtrec;
3763                 char                      *name;
3764                 int                        namelen;
3765                 __u64                      hash;
3766                 int                        rc;
3767
3768                 name = (char *)iam_it_key_get(&it->oi_it);
3769                 if (IS_ERR(name))
3770                         RETURN(PTR_ERR(name));
3771
3772                 namelen = iam_it_key_size(&it->oi_it);
3773
3774                 rec = (const struct osd_fid_pack *)iam_it_rec_get(&it->oi_it);
3775                 if (IS_ERR(rec))
3776                         RETURN(PTR_ERR(rec));
3777
3778                 rc = osd_fid_unpack(fid, rec);
3779                 if (rc)
3780                         RETURN(rc);
3781
3782                 hash = iam_it_store(&it->oi_it);
3783
3784                 /* IAM does not store object type in IAM index (dir) */
3785                 osd_it_pack_dirent(lde, fid, hash, name, namelen,
3786                                    0, LUDA_FID);
3787         } else {
3788                 iam_reccpy(&it->oi_it.ii_path.ip_leaf,
3789                            (struct iam_rec *)dtrec);
3790         }
3791
3792         RETURN(0);
3793 }
3794
3795 /**
3796  * Returns cookie for current Iterator position.
3797  */
3798 static __u64 osd_it_iam_store(const struct lu_env *env, const struct dt_it *di)
3799 {
3800         struct osd_it_iam *it = (struct osd_it_iam *)di;
3801
3802         return iam_it_store(&it->oi_it);
3803 }
3804
3805 /**
3806  * Restore iterator from cookie.
3807  *
3808  * \param  di      osd iterator
3809  * \param  hash    Iterator location cookie
3810  *
3811  * \retval +ve  di points to record with least key not larger than key.
3812  * \retval  0   di points to exact matched key
3813  * \retval -ve  failure
3814  */
3815
3816 static int osd_it_iam_load(const struct lu_env *env,
3817                            const struct dt_it *di, __u64 hash)
3818 {
3819         struct osd_it_iam *it = (struct osd_it_iam *)di;
3820
3821         return iam_it_load(&it->oi_it, hash);
3822 }
3823
3824 static const struct dt_index_operations osd_index_iam_ops = {
3825         .dio_lookup         = osd_index_iam_lookup,
3826         .dio_declare_insert = osd_index_declare_iam_insert,
3827         .dio_insert         = osd_index_iam_insert,
3828         .dio_declare_delete = osd_index_declare_iam_delete,
3829         .dio_delete         = osd_index_iam_delete,
3830         .dio_it     = {
3831                 .init     = osd_it_iam_init,
3832                 .fini     = osd_it_iam_fini,
3833                 .get      = osd_it_iam_get,
3834                 .put      = osd_it_iam_put,
3835                 .next     = osd_it_iam_next,
3836                 .key      = osd_it_iam_key,
3837                 .key_size = osd_it_iam_key_size,
3838                 .rec      = osd_it_iam_rec,
3839                 .store    = osd_it_iam_store,
3840                 .load     = osd_it_iam_load
3841         }
3842 };
3843
3844 /**
3845  * Creates or initializes iterator context.
3846  *
3847  * \retval struct osd_it_ea, iterator structure on success
3848  *
3849  */
3850 static struct dt_it *osd_it_ea_init(const struct lu_env *env,
3851                                     struct dt_object *dt,
3852                                     __u32 attr,
3853                                     struct lustre_capa *capa)
3854 {
3855         struct osd_object       *obj  = osd_dt_obj(dt);
3856         struct osd_thread_info  *info = osd_oti_get(env);
3857         struct osd_it_ea        *it   = &info->oti_it_ea;
3858         struct lu_object        *lo   = &dt->do_lu;
3859         struct dentry           *obj_dentry = &info->oti_it_dentry;
3860         ENTRY;
3861         LASSERT(lu_object_exists(lo));
3862
3863         obj_dentry->d_inode = obj->oo_inode;
3864         obj_dentry->d_sb = osd_sb(osd_obj2dev(obj));
3865         obj_dentry->d_name.hash = 0;
3866
3867         it->oie_rd_dirent       = 0;
3868         it->oie_it_dirent       = 0;
3869         it->oie_dirent          = NULL;
3870         it->oie_buf             = info->oti_it_ea_buf;
3871         it->oie_obj             = obj;
3872         it->oie_file.f_pos      = 0;
3873         it->oie_file.f_dentry   = obj_dentry;
3874         if (attr & LUDA_64BITHASH)
3875                 it->oie_file.f_flags = O_64BITHASH;
3876         else
3877                 it->oie_file.f_flags = O_32BITHASH;
3878         it->oie_file.f_mapping    = obj->oo_inode->i_mapping;
3879         it->oie_file.f_op         = obj->oo_inode->i_fop;
3880         it->oie_file.private_data = NULL;
3881         lu_object_get(lo);
3882         RETURN((struct dt_it *) it);
3883 }
3884
3885 /**
3886  * Destroy or finishes iterator context.
3887  *
3888  * \param di iterator structure to be destroyed
3889  */
3890 static void osd_it_ea_fini(const struct lu_env *env, struct dt_it *di)
3891 {
3892         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
3893         struct osd_object    *obj  = it->oie_obj;
3894         struct inode       *inode  = obj->oo_inode;
3895
3896         ENTRY;
3897         it->oie_file.f_op->release(inode, &it->oie_file);
3898         lu_object_put(env, &obj->oo_dt.do_lu);
3899         EXIT;
3900 }
3901
3902 /**
3903  * It position the iterator at given key, so that next lookup continues from
3904  * that key Or it is similar to dio_it->load() but based on a key,
3905  * rather than file position.
3906  *
3907  * As a special convention, osd_it_ea_get(env, di, "") has to rewind iterator
3908  * to the beginning.
3909  *
3910  * TODO: Presently return +1 considering it is only used by mdd_dir_is_empty().
3911  */
3912 static int osd_it_ea_get(const struct lu_env *env,
3913                          struct dt_it *di, const struct dt_key *key)
3914 {
3915         struct osd_it_ea     *it   = (struct osd_it_ea *)di;
3916
3917         ENTRY;
3918         LASSERT(((const char *)key)[0] == '\0');
3919         it->oie_file.f_pos      = 0;
3920         it->oie_rd_dirent       = 0;
3921         it->oie_it_dirent       = 0;
3922         it->oie_dirent          = NULL;
3923
3924         RETURN(+1);
3925 }
3926
3927 /**
3928  * Does nothing
3929  */
3930 static void osd_it_ea_put(const struct lu_env *env, struct dt_it *di)
3931 {
3932 }
3933
3934 /**
3935  * It is called internally by ->readdir(). It fills the
3936  * iterator's in-memory data structure with required
3937  * information i.e. name, namelen, rec_size etc.
3938  *
3939  * \param buf in which information to be filled in.
3940  * \param name name of the file in given dir
3941  *
3942  * \retval 0 on success
3943  * \retval 1 on buffer full
3944  */
3945 static int osd_ldiskfs_filldir(char *buf, const char *name, int namelen,
3946                                loff_t offset, __u64 ino,
3947                                unsigned d_type)
3948 {
3949         struct osd_it_ea        *it   = (struct osd_it_ea *)buf;
3950         struct osd_it_ea_dirent *ent  = it->oie_dirent;
3951         struct lu_fid           *fid  = &ent->oied_fid;
3952         struct osd_fid_pack     *rec;
3953         ENTRY;
3954
3955         /* this should never happen */
3956         if (unlikely(namelen == 0 || namelen > LDISKFS_NAME_LEN)) {
3957                 CERROR("ldiskfs return invalid namelen %d\n", namelen);
3958                 RETURN(-EIO);
3959         }
3960
3961         if ((void *) ent - it->oie_buf + sizeof(*ent) + namelen >
3962             OSD_IT_EA_BUFSIZE)
3963                 RETURN(1);
3964
3965         if (d_type & LDISKFS_DIRENT_LUFID) {
3966                 rec = (struct osd_fid_pack*) (name + namelen + 1);
3967
3968                 if (osd_fid_unpack(fid, rec) != 0)
3969                         fid_zero(fid);
3970
3971                 d_type &= ~LDISKFS_DIRENT_LUFID;
3972         } else {
3973                 fid_zero(fid);
3974         }
3975
3976         ent->oied_ino     = ino;
3977         ent->oied_off     = offset;
3978         ent->oied_namelen = namelen;
3979         ent->oied_type    = d_type;
3980
3981         memcpy(ent->oied_name, name, namelen);
3982
3983         it->oie_rd_dirent++;
3984         it->oie_dirent = (void *) ent + cfs_size_round(sizeof(*ent) + namelen);
3985         RETURN(0);
3986 }
3987
3988 /**
3989  * Calls ->readdir() to load a directory entry at a time
3990  * and stored it in iterator's in-memory data structure.
3991  *
3992  * \param di iterator's in memory structure
3993  *
3994  * \retval   0 on success
3995  * \retval -ve on error
3996  */
3997 static int osd_ldiskfs_it_fill(const struct lu_env *env,
3998                                const struct dt_it *di)
3999 {
4000         struct osd_it_ea   *it    = (struct osd_it_ea *)di;
4001         struct osd_object  *obj   = it->oie_obj;
4002         struct inode       *inode = obj->oo_inode;
4003         struct htree_lock  *hlock = NULL;
4004         int                 result = 0;
4005
4006         ENTRY;
4007         it->oie_dirent = it->oie_buf;
4008         it->oie_rd_dirent = 0;
4009
4010         if (obj->oo_hl_head != NULL) {
4011                 hlock = osd_oti_get(env)->oti_hlock;
4012                 ldiskfs_htree_lock(hlock, obj->oo_hl_head,
4013                                    inode, LDISKFS_HLOCK_READDIR);
4014         } else {
4015                 cfs_down_read(&obj->oo_ext_idx_sem);
4016         }
4017
4018         result = inode->i_fop->readdir(&it->oie_file, it,
4019                                        (filldir_t) osd_ldiskfs_filldir);
4020
4021         if (hlock != NULL)
4022                 ldiskfs_htree_unlock(hlock);
4023         else
4024                 cfs_up_read(&obj->oo_ext_idx_sem);
4025
4026         if (it->oie_rd_dirent == 0) {
4027                 result = -EIO;
4028         } else {
4029                 it->oie_dirent = it->oie_buf;
4030                 it->oie_it_dirent = 1;
4031         }
4032
4033         RETURN(result);
4034 }
4035
4036 /**
4037  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4038  * to load a directory entry at a time and stored it in
4039  * iterator's in-memory data structure.
4040  *
4041  * \param di iterator's in memory structure
4042  *
4043  * \retval +ve iterator reached to end
4044  * \retval   0 iterator not reached to end
4045  * \retval -ve on error
4046  */
4047 static int osd_it_ea_next(const struct lu_env *env, struct dt_it *di)
4048 {
4049         struct osd_it_ea *it = (struct osd_it_ea *)di;
4050         int rc;
4051
4052         ENTRY;
4053
4054         if (it->oie_it_dirent < it->oie_rd_dirent) {
4055                 it->oie_dirent =
4056                         (void *) it->oie_dirent +
4057                         cfs_size_round(sizeof(struct osd_it_ea_dirent) +
4058                                        it->oie_dirent->oied_namelen);
4059                 it->oie_it_dirent++;
4060                 RETURN(0);
4061         } else {
4062                 if (it->oie_file.f_pos == LDISKFS_HTREE_EOF)
4063                         rc = +1;
4064                 else
4065                         rc = osd_ldiskfs_it_fill(env, di);
4066         }
4067
4068         RETURN(rc);
4069 }
4070
4071 /**
4072  * Returns the key at current position from iterator's in memory structure.
4073  *
4074  * \param di iterator's in memory structure
4075  *
4076  * \retval key i.e. struct dt_key on success
4077  */
4078 static struct dt_key *osd_it_ea_key(const struct lu_env *env,
4079                                     const struct dt_it *di)
4080 {
4081         struct osd_it_ea *it = (struct osd_it_ea *)di;
4082
4083         return (struct dt_key *)it->oie_dirent->oied_name;
4084 }
4085
4086 /**
4087  * Returns the key's size at current position from iterator's in memory structure.
4088  *
4089  * \param di iterator's in memory structure
4090  *
4091  * \retval key_size i.e. struct dt_key on success
4092  */
4093 static int osd_it_ea_key_size(const struct lu_env *env, const struct dt_it *di)
4094 {
4095         struct osd_it_ea *it = (struct osd_it_ea *)di;
4096
4097         return it->oie_dirent->oied_namelen;
4098 }
4099
4100
4101 /**
4102  * Returns the value (i.e. fid/igif) at current position from iterator's
4103  * in memory structure.
4104  *
4105  * \param di struct osd_it_ea, iterator's in memory structure
4106  * \param attr attr requested for dirent.
4107  * \param lde lustre dirent
4108  *
4109  * \retval   0 no error and \param lde has correct lustre dirent.
4110  * \retval -ve on error
4111  */
4112 static inline int osd_it_ea_rec(const struct lu_env *env,
4113                                 const struct dt_it *di,
4114                                 struct dt_rec *dtrec, __u32 attr)
4115 {
4116         struct osd_it_ea       *it    = (struct osd_it_ea *)di;
4117         struct osd_object      *obj   = it->oie_obj;
4118         struct osd_device      *dev   = osd_obj2dev(obj);
4119         struct osd_scrub       *scrub = &dev->od_scrub;
4120         struct scrub_file      *sf    = &scrub->os_file;
4121         struct osd_thread_info *oti   = osd_oti_get(env);
4122         struct osd_idmap_cache *oic   = &oti->oti_cache;
4123         struct lu_fid          *fid   = &it->oie_dirent->oied_fid;
4124         struct lu_dirent       *lde   = (struct lu_dirent *)dtrec;
4125         __u32                   ino   = it->oie_dirent->oied_ino;
4126         int                     rc    = 0;
4127         ENTRY;
4128
4129         if (!fid_is_sane(fid)) {
4130                 rc = osd_ea_fid_get(env, obj, ino, fid, &oic->oic_lid);
4131                 if (rc != 0)
4132                         RETURN(rc);
4133         } else {
4134                 osd_id_gen(&oic->oic_lid, ino, OSD_OII_NOGEN);
4135         }
4136
4137         osd_it_pack_dirent(lde, fid, it->oie_dirent->oied_off,
4138                            it->oie_dirent->oied_name,
4139                            it->oie_dirent->oied_namelen,
4140                            it->oie_dirent->oied_type, attr);
4141
4142         if (!fid_is_norm(fid))
4143                 RETURN(0);
4144
4145         oic->oic_fid = *fid;
4146         if ((scrub->os_pos_current <= ino) &&
4147             (sf->sf_flags & SF_INCONSISTENT ||
4148              ldiskfs_test_bit(osd_oi_fid2idx(dev, fid), sf->sf_oi_bitmap)))
4149                 rc = osd_consistency_check(oti, dev, oic);
4150
4151         RETURN(rc);
4152 }
4153
4154 /**
4155  * Returns a cookie for current position of the iterator head, so that
4156  * user can use this cookie to load/start the iterator next time.
4157  *
4158  * \param di iterator's in memory structure
4159  *
4160  * \retval cookie for current position, on success
4161  */
4162 static __u64 osd_it_ea_store(const struct lu_env *env, const struct dt_it *di)
4163 {
4164         struct osd_it_ea *it = (struct osd_it_ea *)di;
4165
4166         return it->oie_dirent->oied_off;
4167 }
4168
4169 /**
4170  * It calls osd_ldiskfs_it_fill() which will use ->readdir()
4171  * to load a directory entry at a time and stored it i inn,
4172  * in iterator's in-memory data structure.
4173  *
4174  * \param di struct osd_it_ea, iterator's in memory structure
4175  *
4176  * \retval +ve on success
4177  * \retval -ve on error
4178  */
4179 static int osd_it_ea_load(const struct lu_env *env,
4180                           const struct dt_it *di, __u64 hash)
4181 {
4182         struct osd_it_ea *it = (struct osd_it_ea *)di;
4183         int rc;
4184
4185         ENTRY;
4186         it->oie_file.f_pos = hash;
4187
4188         rc =  osd_ldiskfs_it_fill(env, di);
4189         if (rc == 0)
4190                 rc = +1;
4191
4192         RETURN(rc);
4193 }
4194
4195 /**
4196  * Index lookup function for interoperability mode (b11826).
4197  *
4198  * \param key,  key i.e. file name to be searched
4199  *
4200  * \retval +ve, on success
4201  * \retval -ve, on error
4202  */
4203 static int osd_index_ea_lookup(const struct lu_env *env, struct dt_object *dt,
4204                                struct dt_rec *rec, const struct dt_key *key,
4205                                struct lustre_capa *capa)
4206 {
4207         struct osd_object *obj = osd_dt_obj(dt);
4208         int rc = 0;
4209
4210         ENTRY;
4211
4212         LASSERT(S_ISDIR(obj->oo_inode->i_mode));
4213         LINVRNT(osd_invariant(obj));
4214
4215         if (osd_object_auth(env, dt, capa, CAPA_OPC_INDEX_LOOKUP))
4216                 return -EACCES;
4217
4218         rc = osd_ea_lookup_rec(env, obj, rec, key);
4219
4220         if (rc == 0)
4221                 rc = +1;
4222         RETURN(rc);
4223 }
4224
4225 /**
4226  * Index and Iterator operations for interoperability
4227  * mode (i.e. to run 2.0 mds on 1.8 disk) (b11826)
4228  */
4229 static const struct dt_index_operations osd_index_ea_ops = {
4230         .dio_lookup         = osd_index_ea_lookup,
4231         .dio_declare_insert = osd_index_declare_ea_insert,
4232         .dio_insert         = osd_index_ea_insert,
4233         .dio_declare_delete = osd_index_declare_ea_delete,
4234         .dio_delete         = osd_index_ea_delete,
4235         .dio_it     = {
4236                 .init     = osd_it_ea_init,
4237                 .fini     = osd_it_ea_fini,
4238                 .get      = osd_it_ea_get,
4239                 .put      = osd_it_ea_put,
4240                 .next     = osd_it_ea_next,
4241                 .key      = osd_it_ea_key,
4242                 .key_size = osd_it_ea_key_size,
4243                 .rec      = osd_it_ea_rec,
4244                 .store    = osd_it_ea_store,
4245                 .load     = osd_it_ea_load
4246         }
4247 };
4248
4249 static void *osd_key_init(const struct lu_context *ctx,
4250                           struct lu_context_key *key)
4251 {
4252         struct osd_thread_info *info;
4253
4254         OBD_ALLOC_PTR(info);
4255         if (info == NULL)
4256                 return ERR_PTR(-ENOMEM);
4257
4258         OBD_ALLOC(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
4259         if (info->oti_it_ea_buf == NULL)
4260                 goto out_free_info;
4261
4262         info->oti_env = container_of(ctx, struct lu_env, le_ctx);
4263
4264         info->oti_hlock = ldiskfs_htree_lock_alloc();
4265         if (info->oti_hlock == NULL)
4266                 goto out_free_ea;
4267
4268         return info;
4269
4270  out_free_ea:
4271         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
4272  out_free_info:
4273         OBD_FREE_PTR(info);
4274         return ERR_PTR(-ENOMEM);
4275 }
4276
4277 static void osd_key_fini(const struct lu_context *ctx,
4278                          struct lu_context_key *key, void* data)
4279 {
4280         struct osd_thread_info *info = data;
4281
4282         if (info->oti_hlock != NULL)
4283                 ldiskfs_htree_lock_free(info->oti_hlock);
4284         OBD_FREE(info->oti_it_ea_buf, OSD_IT_EA_BUFSIZE);
4285         OBD_FREE_PTR(info);
4286 }
4287
4288 static void osd_key_exit(const struct lu_context *ctx,
4289                          struct lu_context_key *key, void *data)
4290 {
4291         struct osd_thread_info *info = data;
4292
4293         LASSERT(info->oti_r_locks == 0);
4294         LASSERT(info->oti_w_locks == 0);
4295         LASSERT(info->oti_txns    == 0);
4296 }
4297
4298 /* type constructor/destructor: osd_type_init, osd_type_fini */
4299 LU_TYPE_INIT_FINI(osd, &osd_key);
4300
4301 struct lu_context_key osd_key = {
4302         .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
4303         .lct_init = osd_key_init,
4304         .lct_fini = osd_key_fini,
4305         .lct_exit = osd_key_exit
4306 };
4307
4308
4309 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
4310                            const char *name, struct lu_device *next)
4311 {
4312         struct osd_device *osd = osd_dev(d);
4313
4314         strncpy(osd->od_svname, name, MAX_OBD_NAME);
4315         return osd_procfs_init(osd, name);
4316 }
4317
4318 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
4319 {
4320         ENTRY;
4321
4322         osd_scrub_cleanup(env, o);
4323
4324         if (o->od_fsops) {
4325                 fsfilt_put_ops(o->od_fsops);
4326                 o->od_fsops = NULL;
4327         }
4328
4329         /* shutdown quota slave instance associated with the device */
4330         if (o->od_quota_slave != NULL) {
4331                 qsd_fini(env, o->od_quota_slave);
4332                 o->od_quota_slave = NULL;
4333         }
4334
4335         RETURN(0);
4336 }
4337
4338 static int osd_mount(const struct lu_env *env,
4339                      struct osd_device *o, struct lustre_cfg *cfg)
4340 {
4341         struct lustre_mount_info *lmi;
4342         const char               *dev  = lustre_cfg_string(cfg, 0);
4343         struct lustre_disk_data  *ldd;
4344         struct lustre_sb_info    *lsi;
4345         int                       rc = 0;
4346
4347         ENTRY;
4348
4349         o->od_fsops = fsfilt_get_ops(mt_str(LDD_MT_LDISKFS));
4350         if (o->od_fsops == NULL) {
4351                 CERROR("Can't find fsfilt_ldiskfs\n");
4352                 RETURN(-ENOTSUPP);
4353         }
4354
4355         if (o->od_mount != NULL) {
4356                 CERROR("Already mounted (%s)\n", dev);
4357                 RETURN(-EEXIST);
4358         }
4359
4360         /* get mount */
4361         lmi = server_get_mount(dev);
4362         if (lmi == NULL) {
4363                 CERROR("Cannot get mount info for %s!\n", dev);
4364                 RETURN(-EFAULT);
4365         }
4366
4367         LASSERT(lmi != NULL);
4368         /* save lustre_mount_info in dt_device */
4369         o->od_mount = lmi;
4370         o->od_mnt = lmi->lmi_mnt;
4371
4372         lsi = s2lsi(lmi->lmi_sb);
4373         ldd = lsi->lsi_ldd;
4374
4375         if (ldd->ldd_flags & LDD_F_IAM_DIR) {
4376                 o->od_iop_mode = 0;
4377                 LCONSOLE_WARN("%s: OSD: IAM mode enabled\n", dev);
4378         } else
4379                 o->od_iop_mode = 1;
4380
4381         if (ldd->ldd_flags & LDD_F_SV_TYPE_OST) {
4382                 rc = osd_compat_init(o);
4383                 if (rc)
4384                         CERROR("%s: can't initialize compats: %d\n", dev, rc);
4385         }
4386
4387         RETURN(rc);
4388 }
4389
4390 static struct lu_device *osd_device_fini(const struct lu_env *env,
4391                                          struct lu_device *d)
4392 {
4393         int rc;
4394         ENTRY;
4395
4396         osd_compat_fini(osd_dev(d));
4397
4398         shrink_dcache_sb(osd_sb(osd_dev(d)));
4399         osd_sync(env, lu2dt_dev(d));
4400
4401         rc = osd_procfs_fini(osd_dev(d));
4402         if (rc) {
4403                 CERROR("proc fini error %d \n", rc);
4404                 RETURN (ERR_PTR(rc));
4405         }
4406
4407         if (osd_dev(d)->od_mount)
4408                 server_put_mount(osd_dev(d)->od_mount->lmi_name,
4409                                  osd_dev(d)->od_mount->lmi_mnt);
4410         osd_dev(d)->od_mount = NULL;
4411
4412         RETURN(NULL);
4413 }
4414
4415 static struct lu_device *osd_device_alloc(const struct lu_env *env,
4416                                           struct lu_device_type *t,
4417                                           struct lustre_cfg *cfg)
4418 {
4419         struct lu_device  *l;
4420         struct osd_device *o;
4421
4422         OBD_ALLOC_PTR(o);
4423         if (o != NULL) {
4424                 int result;
4425
4426                 result = dt_device_init(&o->od_dt_dev, t);
4427                 if (result == 0) {
4428                         l = osd2lu_dev(o);
4429                         l->ld_ops = &osd_lu_ops;
4430                         o->od_dt_dev.dd_ops = &osd_dt_ops;
4431                         cfs_spin_lock_init(&o->od_osfs_lock);
4432                         cfs_mutex_init(&o->od_otable_mutex);
4433                         o->od_osfs_age = cfs_time_shift_64(-1000);
4434                         o->od_capa_hash = init_capa_hash();
4435                         if (o->od_capa_hash == NULL) {
4436                                 dt_device_fini(&o->od_dt_dev);
4437                                 l = ERR_PTR(-ENOMEM);
4438                         }
4439                 } else
4440                         l = ERR_PTR(result);
4441
4442                 if (IS_ERR(l))
4443                         OBD_FREE_PTR(o);
4444         } else
4445                 l = ERR_PTR(-ENOMEM);
4446         return l;
4447 }
4448
4449 static struct lu_device *osd_device_free(const struct lu_env *env,
4450                                          struct lu_device *d)
4451 {
4452         struct osd_device *o = osd_dev(d);
4453         ENTRY;
4454
4455         cleanup_capa_hash(o->od_capa_hash);
4456         dt_device_fini(&o->od_dt_dev);
4457         OBD_FREE_PTR(o);
4458         RETURN(NULL);
4459 }
4460
4461 static int osd_process_config(const struct lu_env *env,
4462                               struct lu_device *d, struct lustre_cfg *cfg)
4463 {
4464         struct osd_device *o = osd_dev(d);
4465         int err;
4466         ENTRY;
4467
4468         switch(cfg->lcfg_command) {
4469         case LCFG_SETUP:
4470                 err = osd_mount(env, o, cfg);
4471                 break;
4472         case LCFG_CLEANUP:
4473                 lu_dev_del_linkage(d->ld_site, d);
4474                 err = osd_shutdown(env, o);
4475                 break;
4476         default:
4477                 err = -ENOSYS;
4478         }
4479
4480         RETURN(err);
4481 }
4482
4483 static int osd_recovery_complete(const struct lu_env *env,
4484                                  struct lu_device *d)
4485 {
4486         RETURN(0);
4487 }
4488
4489 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
4490                        struct lu_device *dev)
4491 {
4492         struct osd_device *osd = osd_dev(dev);
4493         int                result;
4494         ENTRY;
4495
4496         /* 1. setup scrub, including OI files initialization */
4497         result = osd_scrub_setup(env, osd);
4498         if (result < 0)
4499                 RETURN(result);
4500
4501         /* 2. setup quota slave instance */
4502         osd->od_quota_slave = qsd_init(env, osd->od_svname, &osd->od_dt_dev,
4503                                        osd->od_proc_entry);
4504         if (IS_ERR(osd->od_quota_slave)) {
4505                 result = PTR_ERR(osd->od_quota_slave);
4506                 osd->od_quota_slave = NULL;
4507                 RETURN(result);
4508         }
4509
4510 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,3,50,0)
4511         /* Unfortunately, the current MDD implementation relies on some specific
4512          * code to be executed in the OSD layer. Since OFD now also uses the OSD
4513          * module, we need a way to skip the metadata-specific code when running
4514          * with OFD.
4515          * The hack here is to check the type of the parent device which is
4516          * either MD (i.e. MDD device) with the current MDT stack or DT (i.e.
4517          * OFD device) on an OST. As a reminder, obdfilter does not use the OSD
4518          * layer and still relies on lvfs. This hack won't work any more when
4519          * LOD is landed since LOD is of DT type.
4520          * This code should be removed once the orion MDT changes (LOD/OSP, ...)
4521          * have been landed */
4522         osd->od_is_md = lu_device_is_md(pdev);
4523 #else
4524 #warning "all is_md checks must be removed from osd-ldiskfs"
4525 #endif
4526
4527         if (!osd->od_is_md)
4528                 RETURN(0);
4529
4530         /* 3. setup local objects */
4531         result = llo_local_objects_setup(env, lu2md_dev(pdev), lu2dt_dev(dev));
4532         RETURN(result);
4533 }
4534
4535 static const struct lu_object_operations osd_lu_obj_ops = {
4536         .loo_object_init      = osd_object_init,
4537         .loo_object_delete    = osd_object_delete,
4538         .loo_object_release   = osd_object_release,
4539         .loo_object_free      = osd_object_free,
4540         .loo_object_print     = osd_object_print,
4541         .loo_object_invariant = osd_object_invariant
4542 };
4543
4544 const struct lu_device_operations osd_lu_ops = {
4545         .ldo_object_alloc      = osd_object_alloc,
4546         .ldo_process_config    = osd_process_config,
4547         .ldo_recovery_complete = osd_recovery_complete,
4548         .ldo_prepare           = osd_prepare,
4549 };
4550
4551 static const struct lu_device_type_operations osd_device_type_ops = {
4552         .ldto_init = osd_type_init,
4553         .ldto_fini = osd_type_fini,
4554
4555         .ldto_start = osd_type_start,
4556         .ldto_stop  = osd_type_stop,
4557
4558         .ldto_device_alloc = osd_device_alloc,
4559         .ldto_device_free  = osd_device_free,
4560
4561         .ldto_device_init    = osd_device_init,
4562         .ldto_device_fini    = osd_device_fini
4563 };
4564
4565 static struct lu_device_type osd_device_type = {
4566         .ldt_tags     = LU_DEVICE_DT,
4567         .ldt_name     = LUSTRE_OSD_NAME,
4568         .ldt_ops      = &osd_device_type_ops,
4569         .ldt_ctx_tags = LCT_LOCAL,
4570 };
4571
4572 /*
4573  * lprocfs legacy support.
4574  */
4575 static struct obd_ops osd_obd_device_ops = {
4576         .o_owner = THIS_MODULE
4577 };
4578
4579 static int __init osd_mod_init(void)
4580 {
4581         struct lprocfs_static_vars lvars;
4582
4583         osd_oi_mod_init();
4584         lprocfs_osd_init_vars(&lvars);
4585         return class_register_type(&osd_obd_device_ops, NULL, lvars.module_vars,
4586                                    LUSTRE_OSD_NAME, &osd_device_type);
4587 }
4588
4589 static void __exit osd_mod_exit(void)
4590 {
4591         class_unregister_type(LUSTRE_OSD_NAME);
4592 }
4593
4594 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4595 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_NAME")");
4596 MODULE_LICENSE("GPL");
4597
4598 cfs_module(osd, "0.1.0", osd_mod_init, osd_mod_exit);