lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011 Whamcloud, Inc.
  33  *
  34  */
  35 /*
  36  * This file is part of Lustre, http://www.lustre.org/
  37  * Lustre is a trademark of Sun Microsystems, Inc.
  38  */
  39
  40 #include <linux/fs.h>
  41 #include <linux/sched.h>
  42 #include <linux/mm.h>
  43 #include <linux/smp_lock.h>
  44 #include <linux/quotaops.h>
  45 #include <linux/highmem.h>
  46 #include <linux/pagemap.h>
  47
  48 #define DEBUG_SUBSYSTEM S_LLITE
  49
  50 #include <obd_support.h>
  51 #include <lustre_fid.h>
  52 #include <lustre_lite.h>
  53 #include <lustre_dlm.h>
  54 #include <lustre_ver.h>
  55 #include <lustre_mdc.h>
  56 #include "llite_internal.h"
  57
  58 /*
  59  * Check if we have something mounted at the named dchild.
  60  * In such a case there would always be dentry present.
  61  */
  62 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  63                            struct qstr *name)
  64 {
  65         int mounted = 0;
  66
  67         if (unlikely(dchild)) {
  68                 mounted = d_mountpoint(dchild);
  69         } else if (dparent) {
  70                 dchild = d_lookup(dparent, name);
  71                 if (dchild) {
  72                         mounted = d_mountpoint(dchild);
  73                         dput(dchild);
  74                 }
  75         }
  76         return mounted;
  77 }
  78
  79 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  80 {
  81         ENTRY;
  82
  83         ldlm_lock_decref(lockh, mode);
  84
  85         RETURN(0);
  86 }
  87
  88
  89 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  90 static int ll_test_inode(struct inode *inode, void *opaque)
  91 {
  92         struct ll_inode_info *lli = ll_i2info(inode);
  93         struct lustre_md     *md = opaque;
  94
  95         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  96                 CERROR("MDS body missing FID\n");
  97                 return 0;
  98         }
  99
 100         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
 101                 return 0;
 102
 103         return 1;
 104 }
 105
 106 static int ll_set_inode(struct inode *inode, void *opaque)
 107 {
 108         struct ll_inode_info *lli = ll_i2info(inode);
 109         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
 110
 111         if (unlikely(!(body->valid & OBD_MD_FLID))) {
 112                 CERROR("MDS body missing FID\n");
 113                 return -EINVAL;
 114         }
 115
 116         lli->lli_fid = body->fid1;
 117         return 0;
 118 }
 119
 120
 121 /*
 122  * Get an inode by inode number (already instantiated by the intent lookup).
 123  * Returns inode or NULL
 124  */
 125 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 126                       struct lustre_md *md)
 127 {
 128         struct inode         *inode;
 129         ENTRY;
 130
 131         LASSERT(hash != 0);
 132         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 133
 134         if (inode) {
 135                 if (inode->i_state & I_NEW) {
 136                         int rc;
 137
 138                         ll_read_inode2(inode, md);
 139                         rc = cl_inode_init(inode, md);
 140                         if (rc != 0) {
 141                                 md->lsm = NULL;
 142                                 make_bad_inode(inode);
 143                                 unlock_new_inode(inode);
 144                                 iput(inode);
 145                                 inode = ERR_PTR(rc);
 146                         } else
 147                                 unlock_new_inode(inode);
 148                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 149                                 ll_update_inode(inode, md);
 150                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 151                        inode, PFID(&md->body->fid1));
 152         }
 153         RETURN(inode);
 154 }
 155
 156 static void ll_drop_negative_dentry(struct inode *dir)
 157 {
 158         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 159
 160         cfs_spin_lock(&ll_lookup_lock);
 161         spin_lock(&dcache_lock);
 162 restart:
 163         list_for_each_entry_safe(dentry, tmp_alias,
 164                                  &dir->i_dentry,d_alias) {
 165                 if (!list_empty(&dentry->d_subdirs)) {
 166                         struct dentry *child;
 167                         list_for_each_entry_safe(child, tmp_subdir,
 168                                                  &dentry->d_subdirs,
 169                                                  d_child) {
 170                                 /* XXX Print some debug here? */
 171                                 if (!child->d_inode)
 172                                 /* Negative dentry. If we were
 173                                    dropping dcache lock, go
 174                                    throught the list again */
 175                                         if (ll_drop_dentry(child))
 176                                                 goto restart;
 177                         }
 178                 }
 179         }
 180         spin_unlock(&dcache_lock);
 181         cfs_spin_unlock(&ll_lookup_lock);
 182 }
 183
 184
 185 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 186                        void *data, int flag)
 187 {
 188         int rc;
 189         struct lustre_handle lockh;
 190         ENTRY;
 191
 192         switch (flag) {
 193         case LDLM_CB_BLOCKING:
 194                 ldlm_lock2handle(lock, &lockh);
 195                 rc = ldlm_cli_cancel(&lockh);
 196                 if (rc < 0) {
 197                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 198                         RETURN(rc);
 199                 }
 200                 break;
 201         case LDLM_CB_CANCELING: {
 202                 struct inode *inode = ll_inode_from_lock(lock);
 203                 struct ll_inode_info *lli;
 204                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 205                 struct lu_fid *fid;
 206                 ldlm_mode_t mode = lock->l_req_mode;
 207
 208                 /* Invalidate all dentries associated with this inode */
 209                 if (inode == NULL)
 210                         break;
 211
 212                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 213                 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
 214                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 215                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP, LCK_MINMODE))
 216                         bits &= ~MDS_INODELOCK_LOOKUP;
 217                 if ((bits & MDS_INODELOCK_UPDATE) &&
 218                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE, LCK_MINMODE))
 219                         bits &= ~MDS_INODELOCK_UPDATE;
 220                 if ((bits & MDS_INODELOCK_OPEN) &&
 221                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN, mode))
 222                         bits &= ~MDS_INODELOCK_OPEN;
 223
 224                 fid = ll_inode2fid(inode);
 225                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 226                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 227                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 228                         LDLM_ERROR(lock, "data mismatch with object "
 229                                    DFID" (%p)", PFID(fid), inode);
 230                 }
 231
 232                 if (bits & MDS_INODELOCK_OPEN) {
 233                         int flags = 0;
 234                         switch (lock->l_req_mode) {
 235                         case LCK_CW:
 236                                 flags = FMODE_WRITE;
 237                                 break;
 238                         case LCK_PR:
 239                                 flags = FMODE_EXEC;
 240                                 break;
 241                         case LCK_CR:
 242                                 flags = FMODE_READ;
 243                                 break;
 244                         default:
 245                                 CERROR("Unexpected lock mode for OPEN lock "
 246                                        "%d, inode %ld\n", lock->l_req_mode,
 247                                        inode->i_ino);
 248                         }
 249                         ll_md_real_close(inode, flags);
 250                 }
 251
 252                 lli = ll_i2info(inode);
 253                 if (bits & MDS_INODELOCK_UPDATE)
 254                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 255
 256                 if (S_ISDIR(inode->i_mode) &&
 257                      (bits & MDS_INODELOCK_UPDATE)) {
 258                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 259                                inode->i_ino);
 260                         truncate_inode_pages(inode->i_mapping, 0);
 261                         ll_drop_negative_dentry(inode);
 262                 }
 263
 264                 if (inode->i_sb->s_root &&
 265                     inode != inode->i_sb->s_root->d_inode &&
 266                     (bits & MDS_INODELOCK_LOOKUP))
 267                         ll_unhash_aliases(inode);
 268                 iput(inode);
 269                 break;
 270         }
 271         default:
 272                 LBUG();
 273         }
 274
 275         RETURN(0);
 276 }
 277
 278 __u32 ll_i2suppgid(struct inode *i)
 279 {
 280         if (cfs_curproc_is_in_groups(i->i_gid))
 281                 return (__u32)i->i_gid;
 282         else
 283                 return (__u32)(-1);
 284 }
 285
 286 /* Pack the required supplementary groups into the supplied groups array.
 287  * If we don't need to use the groups from the target inode(s) then we
 288  * instead pack one or more groups from the user's supplementary group
 289  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 290 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 291 {
 292 #if 0
 293         int i;
 294 #endif
 295
 296         LASSERT(i1 != NULL);
 297         LASSERT(suppgids != NULL);
 298
 299         suppgids[0] = ll_i2suppgid(i1);
 300
 301         if (i2)
 302                 suppgids[1] = ll_i2suppgid(i2);
 303                 else
 304                         suppgids[1] = -1;
 305
 306 #if 0
 307         for (i = 0; i < current_ngroups; i++) {
 308                 if (suppgids[0] == -1) {
 309                         if (current_groups[i] != suppgids[1])
 310                                 suppgids[0] = current_groups[i];
 311                         continue;
 312                 }
 313                 if (suppgids[1] == -1) {
 314                         if (current_groups[i] != suppgids[0])
 315                                 suppgids[1] = current_groups[i];
 316                         continue;
 317                 }
 318                 break;
 319         }
 320 #endif
 321 }
 322
 323 static void ll_d_add(struct dentry *de, struct inode *inode)
 324 {
 325         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 326         /* d_instantiate */
 327         if (!list_empty(&de->d_alias)) {
 328                 spin_unlock(&dcache_lock);
 329                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 330                        de->d_name.len, de->d_name.name, de,
 331                        de->d_alias.next, de->d_alias.prev);
 332                 LBUG();
 333         }
 334         if (inode)
 335                 list_add(&de->d_alias, &inode->i_dentry);
 336         de->d_inode = inode;
 337
 338         /* d_rehash */
 339         if (!d_unhashed(de)) {
 340                 spin_unlock(&dcache_lock);
 341                 CERROR("dentry %.*s %p hash next %p\n",
 342                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 343                 LBUG();
 344         }
 345         d_rehash_cond(de, 0);
 346 }
 347
 348 /* Search "inode"'s alias list for a dentry that has the same name and parent
 349  * as de.  If found, return it.  If not found, return de.
 350  * Lustre can't use d_add_unique because don't unhash aliases for directory
 351  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 352  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 353  */
 354 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 355 {
 356         struct list_head *tmp;
 357         struct dentry *dentry;
 358         struct dentry *last_discon = NULL;
 359
 360         cfs_spin_lock(&ll_lookup_lock);
 361         spin_lock(&dcache_lock);
 362         list_for_each(tmp, &inode->i_dentry) {
 363                 dentry = list_entry(tmp, struct dentry, d_alias);
 364
 365                 /* We are called here with 'de' already on the aliases list. */
 366                 if (unlikely(dentry == de)) {
 367                         CERROR("whoops\n");
 368                         continue;
 369                 }
 370
 371                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 372                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
 373                         last_discon = dentry;
 374                         continue;
 375                 }
 376
 377                 if (dentry->d_parent != de->d_parent)
 378                         continue;
 379
 380                 if (dentry->d_name.hash != de->d_name.hash)
 381                         continue;
 382
 383                 if (dentry->d_name.len != de->d_name.len)
 384                         continue;
 385
 386                 if (memcmp(dentry->d_name.name, de->d_name.name,
 387                            de->d_name.len) != 0)
 388                         continue;
 389
 390                 dget_locked(dentry);
 391                 lock_dentry(dentry);
 392                 __d_drop(dentry);
 393                 unlock_dentry(dentry);
 394                 ll_dops_init(dentry, 0, 1);
 395                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 396                 spin_unlock(&dcache_lock);
 397                 cfs_spin_unlock(&ll_lookup_lock);
 398                 iput(inode);
 399                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 400                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 401                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 402                 return dentry;
 403         }
 404
 405         if (last_discon) {
 406                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 407                         "refc %d\n", last_discon, last_discon->d_inode,
 408                         atomic_read(&last_discon->d_count));
 409                 dget_locked(last_discon);
 410                 lock_dentry(last_discon);
 411                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 412                 unlock_dentry(last_discon);
 413                 spin_unlock(&dcache_lock);
 414                 cfs_spin_unlock(&ll_lookup_lock);
 415                 ll_dops_init(last_discon, 1, 1);
 416                 d_rehash(de);
 417                 d_move(last_discon, de);
 418                 iput(inode);
 419                 return last_discon;
 420         }
 421         lock_dentry(de);
 422         de->d_flags |= DCACHE_LUSTRE_INVALID;
 423         unlock_dentry(de);
 424         ll_d_add(de, inode);
 425
 426         spin_unlock(&dcache_lock);
 427         cfs_spin_unlock(&ll_lookup_lock);
 428
 429         return de;
 430 }
 431
 432 int ll_lookup_it_finish(struct ptlrpc_request *request,
 433                         struct lookup_intent *it, void *data)
 434 {
 435         struct it_cb_data *icbd = data;
 436         struct dentry **de = icbd->icbd_childp;
 437         struct inode *parent = icbd->icbd_parent;
 438         struct ll_sb_info *sbi = ll_i2sbi(parent);
 439         struct inode *inode = NULL;
 440         int rc;
 441         ENTRY;
 442
 443         /* NB 1 request reference will be taken away by ll_intent_lock()
 444          * when I return */
 445         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 446                 struct dentry *save = *de;
 447                 __u32 bits;
 448
 449                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 450                 if (rc)
 451                         RETURN(rc);
 452
 453                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 454                        inode, inode->i_ino, inode->i_generation);
 455                 md_set_lock_data(sbi->ll_md_exp,
 456                                  &it->d.lustre.it_lock_handle, inode, &bits);
 457
 458                 /* We used to query real size from OSTs here, but actually
 459                    this is not needed. For stat() calls size would be updated
 460                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 461                    2.4 and
 462                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 463                    Everybody else who needs correct file size would call
 464                    cl_glimpse_size or some equivalent themselves anyway.
 465                    Also see bug 7198. */
 466                 ll_dops_init(*de, 1, 1);
 467                 *de = ll_find_alias(inode, *de);
 468                 if (*de != save) {
 469                         struct ll_dentry_data *lld = ll_d2d(*de);
 470
 471                         /* just make sure the ll_dentry_data is ready */
 472                         if (unlikely(lld == NULL))
 473                                 ll_dops_init(*de, 1, 1);
 474                 }
 475                 /* we have lookup look - unhide dentry */
 476                 if (bits & MDS_INODELOCK_LOOKUP) {
 477                         lock_dentry(*de);
 478                         (*de)->d_flags &= ~DCACHE_LUSTRE_INVALID;
 479                         unlock_dentry(*de);
 480                 }
 481         } else {
 482                 ll_dops_init(*de, 1, 1);
 483                 /* Check that parent has UPDATE lock. If there is none, we
 484                    cannot afford to hash this dentry (done by ll_d_add) as it
 485                    might get picked up later when UPDATE lock will appear */
 486                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE, LCK_MINMODE)) {
 487                         spin_lock(&dcache_lock);
 488                         ll_d_add(*de, NULL);
 489                         spin_unlock(&dcache_lock);
 490                 } else {
 491                         /* negative lookup - and don't have update lock to
 492                          * parent */
 493                         lock_dentry(*de);
 494                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 495                         unlock_dentry(*de);
 496
 497                         (*de)->d_inode = NULL;
 498                         /* We do not want to hash the dentry if don`t have a
 499                          * lock, but if this dentry is later used in d_move,
 500                          * we'd hit uninitialised list head d_hash, so we just
 501                          * do this to init d_hash field but leave dentry
 502                          * unhashed. (bug 10796). */
 503                         d_rehash(*de);
 504                         d_drop(*de);
 505                 }
 506         }
 507
 508         RETURN(0);
 509 }
 510
 511 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 512                                    struct lookup_intent *it, int lookup_flags)
 513 {
 514         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 515         struct dentry *save = dentry, *retval;
 516         struct ptlrpc_request *req = NULL;
 517         struct md_op_data *op_data;
 518         struct it_cb_data icbd;
 519         __u32 opc;
 520         int rc, first = 0;
 521         ENTRY;
 522
 523         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 524                 RETURN(ERR_PTR(-ENAMETOOLONG));
 525
 526         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 527                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 528                parent->i_generation, parent, LL_IT2STR(it));
 529
 530         if (d_mountpoint(dentry))
 531                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 532
 533         ll_frob_intent(&it, &lookup_it);
 534
 535         /* As do_lookup is called before follow_mount, root dentry may be left
 536          * not valid, revalidate it here. */
 537         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 538             (it->it_op & (IT_OPEN | IT_CREAT))) {
 539                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
 540                                             MDS_INODELOCK_LOOKUP);
 541                 if (rc)
 542                         RETURN(ERR_PTR(rc));
 543         }
 544
 545         if (it->it_op == IT_GETATTR) {
 546                 first = ll_statahead_enter(parent, &dentry, 1);
 547                 if (first >= 0) {
 548                         ll_statahead_exit(parent, dentry, first);
 549                         if (first == 1)
 550                                 RETURN(retval = dentry);
 551                 }
 552         }
 553
 554         icbd.icbd_childp = &dentry;
 555         icbd.icbd_parent = parent;
 556
 557         if (it->it_op & IT_CREAT ||
 558             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 559                 opc = LUSTRE_OPC_CREATE;
 560         else
 561                 opc = LUSTRE_OPC_ANY;
 562
 563         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 564                                      dentry->d_name.len, lookup_flags, opc,
 565                                      NULL);
 566         if (IS_ERR(op_data))
 567                 RETURN((void *)op_data);
 568
 569         it->it_create_mode &= ~cfs_curproc_umask();
 570
 571         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 572                             lookup_flags, &req, ll_md_blocking_ast, 0);
 573         ll_finish_md_op_data(op_data);
 574         if (rc < 0)
 575                 GOTO(out, retval = ERR_PTR(rc));
 576
 577         rc = ll_lookup_it_finish(req, it, &icbd);
 578         if (rc != 0) {
 579                 ll_intent_release(it);
 580                 GOTO(out, retval = ERR_PTR(rc));
 581         }
 582
 583         if (first == -EEXIST)
 584                 ll_statahead_mark(parent, dentry);
 585
 586         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 587             !S_ISREG(dentry->d_inode->i_mode) &&
 588             !S_ISDIR(dentry->d_inode->i_mode)) {
 589                 ll_release_openhandle(dentry, it);
 590         }
 591         ll_lookup_finish_locks(it, dentry);
 592
 593         if (dentry == save)
 594                 GOTO(out, retval = NULL);
 595         else
 596                 GOTO(out, retval = dentry);
 597  out:
 598         if (req)
 599                 ptlrpc_req_finished(req);
 600         return retval;
 601 }
 602
 603 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 604                                         int lookup_flags)
 605 {
 606         struct lookup_intent *it;
 607
 608         OBD_ALLOC(it, sizeof(*it));
 609         if (!it)
 610                 return ERR_PTR(-ENOMEM);
 611
 612         if (lookup_flags & LOOKUP_OPEN) {
 613                 it->it_op = IT_OPEN;
 614                 if (lookup_flags & LOOKUP_CREATE)
 615                         it->it_op |= IT_CREAT;
 616                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
 617                 it->it_flags = oit->flags;
 618         } else {
 619                 it->it_op = IT_GETATTR;
 620         }
 621
 622 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 623                 /* Since there is no way to pass our intent to ll_file_open,
 624                  * just check the file is there. Actual open will be done
 625                  * in ll_file_open */
 626                 if (it->it_op & IT_OPEN)
 627                         it->it_op = IT_LOOKUP;
 628 #endif
 629
 630         return it;
 631 }
 632
 633 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 634                                    struct nameidata *nd)
 635 {
 636         struct dentry *de;
 637         ENTRY;
 638
 639         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 640                 struct lookup_intent *it;
 641
 642 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 643                 /* Did we came here from failed revalidate just to propagate
 644                  * its error? */
 645                 if (nd->flags & LOOKUP_OPEN)
 646                         if (IS_ERR(nd->intent.open.file))
 647                                 RETURN((struct dentry *)nd->intent.open.file);
 648 #endif
 649                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 650                         it = ll_d2d(dentry)->lld_it;
 651                         ll_d2d(dentry)->lld_it = NULL;
 652                 } else {
 653                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 654                                 /* We are sure this is new dentry, so we need to create
 655                                    our private data and set the dentry ops */
 656                                 ll_dops_init(dentry, 1, 1);
 657                                 RETURN(NULL);
 658                         }
 659                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 660                         if (IS_ERR(it))
 661                                 RETURN((struct dentry *)it);
 662                 }
 663
 664                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 665                 if (de)
 666                         dentry = de;
 667                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 668                         if (dentry->d_inode &&
 669                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 670 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 671                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 672                                         // We cannot call open here as it would
 673                                         // deadlock.
 674                                         ptlrpc_req_finished(
 675                                                        (struct ptlrpc_request *)
 676                                                           it->d.lustre.it_data);
 677                                 } else {
 678 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 679 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 680  * nd->intent.open.file for error, so we need to return it as lookup's result
 681  * instead */
 682                                         struct file *filp;
 683                                         nd->intent.open.file->private_data = it;
 684                                         filp =lookup_instantiate_filp(nd,dentry,
 685                                                                       NULL);
 686                                         if (IS_ERR(filp)) {
 687                                                 if (de)
 688                                                         dput(de);
 689                                                 de = (struct dentry *) filp;
 690                                         }
 691 #else
 692                                         nd->intent.open.file->private_data = it;
 693                                         (void)lookup_instantiate_filp(nd,dentry,
 694                                                                       NULL);
 695 #endif
 696
 697                                 }
 698 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 699                                 /* Release open handle as we have no way to
 700                                  * pass it to ll_file_open */
 701                                 ll_release_openhandle(dentry, it);
 702 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 703                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 704                                 // XXX This can only reliably work on assumption
 705                                 // that there are NO hashed negative dentries.
 706                                 ll_d2d(dentry)->lld_it = it;
 707                                 it = NULL; /* Will be freed in ll_create_nd */
 708                                 /* We absolutely depend on ll_create_nd to be
 709                                  * called to not leak this intent and possible
 710                                  * data attached to it */
 711                         }
 712                 }
 713
 714                 if (it) {
 715                         ll_intent_release(it);
 716                         OBD_FREE(it, sizeof(*it));
 717                 }
 718         } else {
 719                 de = ll_lookup_it(parent, dentry, NULL, 0);
 720         }
 721
 722         RETURN(de);
 723 }
 724
 725 /* We depend on "mode" being set with the proper file type/umask by now */
 726 static struct inode *ll_create_node(struct inode *dir, const char *name,
 727                                     int namelen, const void *data, int datalen,
 728                                     int mode, __u64 extra,
 729                                     struct lookup_intent *it)
 730 {
 731         struct inode *inode = NULL;
 732         struct ptlrpc_request *request = NULL;
 733         struct ll_sb_info *sbi = ll_i2sbi(dir);
 734         int rc;
 735         ENTRY;
 736
 737         LASSERT(it && it->d.lustre.it_disposition);
 738
 739         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 740         request = it->d.lustre.it_data;
 741         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 742         rc = ll_prep_inode(&inode, request, dir->i_sb);
 743         if (rc)
 744                 GOTO(out, inode = ERR_PTR(rc));
 745
 746         LASSERT(list_empty(&inode->i_dentry));
 747
 748         /* We asked for a lock on the directory, but were granted a
 749          * lock on the inode.  Since we finally have an inode pointer,
 750          * stuff it in the lock. */
 751         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 752                inode, inode->i_ino, inode->i_generation);
 753         md_set_lock_data(sbi->ll_md_exp,
 754                          &it->d.lustre.it_lock_handle, inode, NULL);
 755         EXIT;
 756  out:
 757         ptlrpc_req_finished(request);
 758         return inode;
 759 }
 760
 761 /*
 762  * By the time this is called, we already have created the directory cache
 763  * entry for the new file, but it is so far negative - it has no inode.
 764  *
 765  * We defer creating the OBD object(s) until open, to keep the intent and
 766  * non-intent code paths similar, and also because we do not have the MDS
 767  * inode number before calling ll_create_node() (which is needed for LOV),
 768  * so we would need to do yet another RPC to the MDS to store the LOV EA
 769  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 770  * lmm_size in datalen (the MDS still has code which will handle that).
 771  *
 772  * If the create succeeds, we fill in the inode information
 773  * with d_instantiate().
 774  */
 775 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 776                         struct lookup_intent *it)
 777 {
 778         struct inode *inode;
 779         int rc = 0;
 780         ENTRY;
 781
 782         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 783                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 784                dir->i_generation, dir, LL_IT2STR(it));
 785
 786         rc = it_open_error(DISP_OPEN_CREATE, it);
 787         if (rc)
 788                 RETURN(rc);
 789
 790         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 791                                NULL, 0, mode, 0, it);
 792         if (IS_ERR(inode))
 793                 RETURN(PTR_ERR(inode));
 794
 795         d_instantiate(dentry, inode);
 796         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 797          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 798          * successful create. Hash it here. */
 799         spin_lock(&dcache_lock);
 800         if (d_unhashed(dentry))
 801                 d_rehash_cond(dentry, 0);
 802         spin_unlock(&dcache_lock);
 803         RETURN(0);
 804 }
 805
 806 static void ll_update_times(struct ptlrpc_request *request,
 807                             struct inode *inode)
 808 {
 809         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 810                                                        &RMF_MDT_BODY);
 811
 812         LASSERT(body);
 813         if (body->valid & OBD_MD_FLMTIME &&
 814             body->mtime > LTIME_S(inode->i_mtime)) {
 815                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 816                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 817                 LTIME_S(inode->i_mtime) = body->mtime;
 818         }
 819         if (body->valid & OBD_MD_FLCTIME &&
 820             body->ctime > LTIME_S(inode->i_ctime))
 821                 LTIME_S(inode->i_ctime) = body->ctime;
 822 }
 823
 824 static int ll_new_node(struct inode *dir, struct qstr *name,
 825                        const char *tgt, int mode, int rdev,
 826                        struct dentry *dchild, __u32 opc)
 827 {
 828         struct ptlrpc_request *request = NULL;
 829         struct md_op_data *op_data;
 830         struct inode *inode = NULL;
 831         struct ll_sb_info *sbi = ll_i2sbi(dir);
 832         int tgt_len = 0;
 833         int err;
 834
 835         ENTRY;
 836         if (unlikely(tgt != NULL))
 837                 tgt_len = strlen(tgt) + 1;
 838
 839         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 840                                      name->len, 0, opc, NULL);
 841         if (IS_ERR(op_data))
 842                 GOTO(err_exit, err = PTR_ERR(op_data));
 843
 844         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 845                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 846                         cfs_curproc_cap_pack(), rdev, &request);
 847         ll_finish_md_op_data(op_data);
 848         if (err)
 849                 GOTO(err_exit, err);
 850
 851         ll_update_times(request, dir);
 852
 853         if (dchild) {
 854                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 855                 if (err)
 856                      GOTO(err_exit, err);
 857
 858                 d_drop(dchild);
 859                 d_instantiate(dchild, inode);
 860         }
 861         EXIT;
 862 err_exit:
 863         ptlrpc_req_finished(request);
 864
 865         return err;
 866 }
 867
 868 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 869                             unsigned rdev, struct dentry *dchild)
 870 {
 871         int err;
 872         ENTRY;
 873
 874         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 875                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 876                mode, rdev);
 877
 878         mode &= ~cfs_curproc_umask();
 879
 880         switch (mode & S_IFMT) {
 881         case 0:
 882                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 883         case S_IFREG:
 884         case S_IFCHR:
 885         case S_IFBLK:
 886         case S_IFIFO:
 887         case S_IFSOCK:
 888                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 889                                   LUSTRE_OPC_MKNOD);
 890                 break;
 891         case S_IFDIR:
 892                 err = -EPERM;
 893                 break;
 894         default:
 895                 err = -EINVAL;
 896         }
 897         RETURN(err);
 898 }
 899
 900 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 901                         int mode, struct nameidata *nd)
 902 {
 903         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 904         int rc;
 905
 906         if (!it)
 907                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 908
 909         ll_d2d(dentry)->lld_it = NULL;
 910
 911         /* Was there an error? Propagate it! */
 912         if (it->d.lustre.it_status) {
 913                 rc = it->d.lustre.it_status;
 914                 goto out;
 915         }
 916
 917         rc = ll_create_it(dir, dentry, mode, it);
 918 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 919         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 920                 nd->intent.open.file->private_data = it;
 921                 lookup_instantiate_filp(nd, dentry, NULL);
 922         }
 923 #else
 924         ll_release_openhandle(dentry,it);
 925 #endif
 926
 927 out:
 928         ll_intent_release(it);
 929         OBD_FREE(it, sizeof(*it));
 930
 931         return rc;
 932 }
 933
 934 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 935                               const char *tgt, struct dentry *dchild)
 936 {
 937         int err;
 938         ENTRY;
 939
 940         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 941                name->len, name->name, dir->i_ino, dir->i_generation,
 942                dir, 3000, tgt);
 943
 944         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 945                           0, dchild, LUSTRE_OPC_SYMLINK);
 946         RETURN(err);
 947 }
 948
 949 static int ll_link_generic(struct inode *src,  struct inode *dir,
 950                            struct qstr *name, struct dentry *dchild)
 951 {
 952         struct ll_sb_info *sbi = ll_i2sbi(dir);
 953         struct ptlrpc_request *request = NULL;
 954         struct md_op_data *op_data;
 955         int err;
 956
 957         ENTRY;
 958         CDEBUG(D_VFSTRACE,
 959                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 960                src->i_ino, src->i_generation, src, dir->i_ino,
 961                dir->i_generation, dir, name->len, name->name);
 962
 963         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 964                                      0, LUSTRE_OPC_ANY, NULL);
 965         if (IS_ERR(op_data))
 966                 RETURN(PTR_ERR(op_data));
 967
 968         err = md_link(sbi->ll_md_exp, op_data, &request);
 969         ll_finish_md_op_data(op_data);
 970         if (err)
 971                 GOTO(out, err);
 972         if (dchild)
 973                 d_drop(dchild);
 974
 975         ll_update_times(request, dir);
 976         EXIT;
 977 out:
 978         ptlrpc_req_finished(request);
 979         RETURN(err);
 980 }
 981
 982 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 983                             int mode, struct dentry *dchild)
 984
 985 {
 986         int err;
 987         ENTRY;
 988
 989         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 990                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 991
 992         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
 993         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 994
 995         RETURN(err);
 996 }
 997
 998 /* Try to find the child dentry by its name.
 999    If found, put the result fid into @fid. */
1000 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1001                              struct lu_fid *fid)
1002 {
1003         struct dentry *parent, *child;
1004
1005         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1006         child = d_lookup(parent, name);
1007         if (child) {
1008                 if (child->d_inode)
1009                         *fid = *ll_inode2fid(child->d_inode);
1010                 dput(child);
1011         }
1012 }
1013
1014 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1015                             struct dentry *dchild, struct qstr *name)
1016 {
1017         struct ptlrpc_request *request = NULL;
1018         struct md_op_data *op_data;
1019         int rc;
1020         ENTRY;
1021
1022         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1023                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1024
1025         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1026                 RETURN(-EBUSY);
1027
1028         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1029                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1030         if (IS_ERR(op_data))
1031                 RETURN(PTR_ERR(op_data));
1032
1033         ll_get_child_fid(dir, name, &op_data->op_fid3);
1034         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1035         ll_finish_md_op_data(op_data);
1036         if (rc == 0)
1037                 ll_update_times(request, dir);
1038         ptlrpc_req_finished(request);
1039         RETURN(rc);
1040 }
1041
1042 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1043 {
1044         struct mdt_body *body;
1045         struct lov_mds_md *eadata;
1046         struct lov_stripe_md *lsm = NULL;
1047         struct obd_trans_info oti = { 0 };
1048         struct obdo *oa;
1049         struct obd_capa *oc = NULL;
1050         int rc;
1051         ENTRY;
1052
1053         /* req is swabbed so this is safe */
1054         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1055         if (!(body->valid & OBD_MD_FLEASIZE))
1056                 RETURN(0);
1057
1058         if (body->eadatasize == 0) {
1059                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1060                 GOTO(out, rc = -EPROTO);
1061         }
1062
1063         /* The MDS sent back the EA because we unlinked the last reference
1064          * to this file. Use this EA to unlink the objects on the OST.
1065          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1066          * check it is complete and sensible. */
1067         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1068                                               body->eadatasize);
1069         LASSERT(eadata != NULL);
1070
1071         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1072         if (rc < 0) {
1073                 CERROR("obd_unpackmd: %d\n", rc);
1074                 GOTO(out, rc);
1075         }
1076         LASSERT(rc >= sizeof(*lsm));
1077
1078         OBDO_ALLOC(oa);
1079         if (oa == NULL)
1080                 GOTO(out_free_memmd, rc = -ENOMEM);
1081
1082         oa->o_id = lsm->lsm_object_id;
1083         oa->o_seq = lsm->lsm_object_seq;
1084         oa->o_mode = body->mode & S_IFMT;
1085         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1086
1087         if (body->valid & OBD_MD_FLCOOKIE) {
1088                 oa->o_valid |= OBD_MD_FLCOOKIE;
1089                 oti.oti_logcookies =
1090                         req_capsule_server_sized_get(&request->rq_pill,
1091                                                      &RMF_LOGCOOKIES,
1092                                                    sizeof(struct llog_cookie) *
1093                                                      lsm->lsm_stripe_count);
1094                 if (oti.oti_logcookies == NULL) {
1095                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1096                         body->valid &= ~OBD_MD_FLCOOKIE;
1097                 }
1098         }
1099
1100         if (body->valid & OBD_MD_FLOSSCAPA) {
1101                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1102                 if (rc)
1103                         GOTO(out_free_memmd, rc);
1104         }
1105
1106         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1107         capa_put(oc);
1108         OBDO_FREE(oa);
1109         if (rc)
1110                 CERROR("obd destroy objid "LPX64" error %d\n",
1111                        lsm->lsm_object_id, rc);
1112  out_free_memmd:
1113         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1114  out:
1115         return rc;
1116 }
1117
1118 /* ll_unlink_generic() doesn't update the inode with the new link count.
1119  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1120  * is any lock existing. They will recycle dentries and inodes based upon locks
1121  * too. b=20433 */
1122 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1123                              struct dentry *dchild, struct qstr *name)
1124 {
1125         struct ptlrpc_request *request = NULL;
1126         struct md_op_data *op_data;
1127         int rc;
1128         ENTRY;
1129         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1130                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1131
1132         /*
1133          * XXX: unlink bind mountpoint maybe call to here,
1134          * just check it as vfs_unlink does.
1135          */
1136         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1137                 RETURN(-EBUSY);
1138
1139         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1140                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1141         if (IS_ERR(op_data))
1142                 RETURN(PTR_ERR(op_data));
1143
1144         ll_get_child_fid(dir, name, &op_data->op_fid3);
1145         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1146         ll_finish_md_op_data(op_data);
1147         if (rc)
1148                 GOTO(out, rc);
1149
1150         ll_update_times(request, dir);
1151
1152         rc = ll_objects_destroy(request, dir);
1153  out:
1154         ptlrpc_req_finished(request);
1155         RETURN(rc);
1156 }
1157
1158 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1159                              struct dentry *src_dchild, struct qstr *src_name,
1160                              struct inode *tgt, struct dentry *tgt_dparent,
1161                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1162 {
1163         struct ptlrpc_request *request = NULL;
1164         struct ll_sb_info *sbi = ll_i2sbi(src);
1165         struct md_op_data *op_data;
1166         int err;
1167         ENTRY;
1168         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1169                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1170                src->i_ino, src->i_generation, src, tgt_name->len,
1171                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1172
1173         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1174             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1175                 RETURN(-EBUSY);
1176
1177         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1178                                      LUSTRE_OPC_ANY, NULL);
1179         if (IS_ERR(op_data))
1180                 RETURN(PTR_ERR(op_data));
1181
1182         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1183         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1184         err = md_rename(sbi->ll_md_exp, op_data,
1185                         src_name->name, src_name->len,
1186                         tgt_name->name, tgt_name->len, &request);
1187         ll_finish_md_op_data(op_data);
1188         if (!err) {
1189                 ll_update_times(request, src);
1190                 ll_update_times(request, tgt);
1191                 err = ll_objects_destroy(request, src);
1192         }
1193
1194         ptlrpc_req_finished(request);
1195
1196         RETURN(err);
1197 }
1198
1199 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1200                     ll_dev_t rdev)
1201 {
1202         return ll_mknod_generic(dir, &dchild->d_name, mode,
1203                                 old_encode_dev(rdev), dchild);
1204 }
1205
1206 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1207 {
1208         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1209 }
1210 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1211 {
1212         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1213 }
1214 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1215 {
1216         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1217 }
1218 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1219                       const char *oldname)
1220 {
1221         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1222 }
1223 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1224                    struct dentry *new_dentry)
1225 {
1226         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1227                                new_dentry);
1228 }
1229 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1230                      struct inode *new_dir, struct dentry *new_dentry)
1231 {
1232         int err;
1233         err = ll_rename_generic(old_dir, NULL,
1234                                  old_dentry, &old_dentry->d_name,
1235                                  new_dir, NULL, new_dentry,
1236                                  &new_dentry->d_name);
1237         if (!err) {
1238 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1239                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1240 #endif
1241                         d_move(old_dentry, new_dentry);
1242         }
1243         return err;
1244 }
1245
1246 struct inode_operations ll_dir_inode_operations = {
1247         .mknod              = ll_mknod,
1248         .lookup             = ll_lookup_nd,
1249         .create             = ll_create_nd,
1250         /* We need all these non-raw things for NFSD, to not patch it. */
1251         .unlink             = ll_unlink,
1252         .mkdir              = ll_mkdir,
1253         .rmdir              = ll_rmdir,
1254         .symlink            = ll_symlink,
1255         .link               = ll_link,
1256         .rename             = ll_rename,
1257         .setattr            = ll_setattr,
1258         .getattr            = ll_getattr,
1259         .permission         = ll_inode_permission,
1260         .setxattr           = ll_setxattr,
1261         .getxattr           = ll_getxattr,
1262         .listxattr          = ll_listxattr,
1263         .removexattr        = ll_removexattr,
1264 };
1265
1266 struct inode_operations ll_special_inode_operations = {
1267         .setattr        = ll_setattr,
1268         .getattr        = ll_getattr,
1269         .permission     = ll_inode_permission,
1270         .setxattr       = ll_setxattr,
1271         .getxattr       = ll_getxattr,
1272         .listxattr      = ll_listxattr,
1273         .removexattr    = ll_removexattr,
1274 };