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  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #include <linux/fs.h>
  38 #include <linux/sched.h>
  39 #include <linux/mm.h>
  40 #include <linux/smp_lock.h>
  41 #include <linux/quotaops.h>
  42 #include <linux/highmem.h>
  43 #include <linux/pagemap.h>
  44
  45 #define DEBUG_SUBSYSTEM S_LLITE
  46
  47 #include <obd_support.h>
  48 #include <lustre_fid.h>
  49 #include <lustre_lite.h>
  50 #include <lustre_dlm.h>
  51 #include <lustre_ver.h>
  52 #include <lustre_mdc.h>
  53 #include "llite_internal.h"
  54
  55 /*
  56  * Check if we have something mounted at the named dchild.
  57  * In such a case there would always be dentry present.
  58  */
  59 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  60                            struct qstr *name)
  61 {
  62         int mounted = 0;
  63
  64         if (unlikely(dchild)) {
  65                 mounted = d_mountpoint(dchild);
  66         } else if (dparent) {
  67                 dchild = d_lookup(dparent, name);
  68                 if (dchild) {
  69                         mounted = d_mountpoint(dchild);
  70                         dput(dchild);
  71                 }
  72         }
  73         return mounted;
  74 }
  75
  76 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  77 {
  78         ENTRY;
  79
  80         ldlm_lock_decref(lockh, mode);
  81
  82         RETURN(0);
  83 }
  84
  85
  86 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  87 static int ll_test_inode(struct inode *inode, void *opaque)
  88 {
  89         struct ll_inode_info *lli = ll_i2info(inode);
  90         struct lustre_md     *md = opaque;
  91
  92         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  93                 CERROR("MDS body missing FID\n");
  94                 return 0;
  95         }
  96
  97         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
  98                 return 0;
  99
 100         return 1;
 101 }
 102
 103 static int ll_set_inode(struct inode *inode, void *opaque)
 104 {
 105         return 0;
 106 }
 107
 108
 109 /*
 110  * Get an inode by inode number (already instantiated by the intent lookup).
 111  * Returns inode or NULL
 112  */
 113 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 114                       struct lustre_md *md)
 115 {
 116         struct ll_inode_info *lli;
 117         struct inode         *inode;
 118         ENTRY;
 119
 120         LASSERT(hash != 0);
 121         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 122
 123         if (inode) {
 124                 lli = ll_i2info(inode);
 125                 if (inode->i_state & I_NEW) {
 126                         int rc;
 127
 128                         ll_read_inode2(inode, md);
 129                         rc = cl_inode_init(inode, md);
 130                         if (rc != 0) {
 131                                 md->lsm = NULL;
 132                                 make_bad_inode(inode);
 133                                 unlock_new_inode(inode);
 134                                 iput(inode);
 135                                 inode = ERR_PTR(rc);
 136                         } else
 137                                 unlock_new_inode(inode);
 138                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 139                                 ll_update_inode(inode, md);
 140                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 141                        inode, PFID(&md->body->fid1));
 142         }
 143         RETURN(inode);
 144 }
 145
 146 static void ll_drop_negative_dentry(struct inode *dir)
 147 {
 148         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 149
 150         spin_lock(&ll_lookup_lock);
 151         spin_lock(&dcache_lock);
 152 restart:
 153         list_for_each_entry_safe(dentry, tmp_alias,
 154                                  &dir->i_dentry,d_alias) {
 155                 if (!list_empty(&dentry->d_subdirs)) {
 156                         struct dentry *child;
 157                         list_for_each_entry_safe(child, tmp_subdir,
 158                                                  &dentry->d_subdirs,
 159                                                  d_child) {
 160                                 /* XXX Print some debug here? */
 161                                 if (!child->d_inode)
 162                                 /* Negative dentry. If we were
 163                                    dropping dcache lock, go
 164                                    throught the list again */
 165                                         if (ll_drop_dentry(child))
 166                                                 goto restart;
 167                         }
 168                 }
 169         }
 170         spin_unlock(&dcache_lock);
 171         spin_unlock(&ll_lookup_lock);
 172 }
 173
 174
 175 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 176                        void *data, int flag)
 177 {
 178         int rc;
 179         struct lustre_handle lockh;
 180         ENTRY;
 181
 182         switch (flag) {
 183         case LDLM_CB_BLOCKING:
 184                 ldlm_lock2handle(lock, &lockh);
 185                 rc = ldlm_cli_cancel(&lockh);
 186                 if (rc < 0) {
 187                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 188                         RETURN(rc);
 189                 }
 190                 break;
 191         case LDLM_CB_CANCELING: {
 192                 struct inode *inode = ll_inode_from_lock(lock);
 193                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 194                 struct lu_fid *fid;
 195
 196                 /* Invalidate all dentries associated with this inode */
 197                 if (inode == NULL)
 198                         break;
 199
 200                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 201                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 202                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 203                         bits &= ~MDS_INODELOCK_LOOKUP;
 204                 if ((bits & MDS_INODELOCK_UPDATE) &&
 205                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 206                         bits &= ~MDS_INODELOCK_UPDATE;
 207                 if ((bits & MDS_INODELOCK_OPEN) &&
 208                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 209                         bits &= ~MDS_INODELOCK_OPEN;
 210
 211                 fid = ll_inode2fid(inode);
 212                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 213                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 214                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 215                         LDLM_ERROR(lock, "data mismatch with object "
 216                                    DFID" (%p)", PFID(fid), inode);
 217                 }
 218
 219                 if (bits & MDS_INODELOCK_OPEN) {
 220                         int flags = 0;
 221                         switch (lock->l_req_mode) {
 222                         case LCK_CW:
 223                                 flags = FMODE_WRITE;
 224                                 break;
 225                         case LCK_PR:
 226                                 flags = FMODE_EXEC;
 227                                 break;
 228                         case LCK_CR:
 229                                 flags = FMODE_READ;
 230                                 break;
 231                         default:
 232                                 CERROR("Unexpected lock mode for OPEN lock "
 233                                        "%d, inode %ld\n", lock->l_req_mode,
 234                                        inode->i_ino);
 235                         }
 236                         ll_md_real_close(inode, flags);
 237                 }
 238
 239                 if (bits & MDS_INODELOCK_UPDATE)
 240                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 241
 242                 if (S_ISDIR(inode->i_mode) &&
 243                      (bits & MDS_INODELOCK_UPDATE)) {
 244                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 245                                inode->i_ino);
 246                         truncate_inode_pages(inode->i_mapping, 0);
 247                         ll_drop_negative_dentry(inode);
 248                 }
 249
 250                 if (inode->i_sb->s_root &&
 251                     inode != inode->i_sb->s_root->d_inode &&
 252                     (bits & MDS_INODELOCK_LOOKUP))
 253                         ll_unhash_aliases(inode);
 254                 iput(inode);
 255                 break;
 256         }
 257         default:
 258                 LBUG();
 259         }
 260
 261         RETURN(0);
 262 }
 263
 264 __u32 ll_i2suppgid(struct inode *i)
 265 {
 266         if (in_group_p(i->i_gid))
 267                 return (__u32)i->i_gid;
 268         else
 269                 return (__u32)(-1);
 270 }
 271
 272 /* Pack the required supplementary groups into the supplied groups array.
 273  * If we don't need to use the groups from the target inode(s) then we
 274  * instead pack one or more groups from the user's supplementary group
 275  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 276 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 277 {
 278 #if 0
 279         int i;
 280 #endif
 281
 282         LASSERT(i1 != NULL);
 283         LASSERT(suppgids != NULL);
 284
 285         suppgids[0] = ll_i2suppgid(i1);
 286
 287         if (i2)
 288                 suppgids[1] = ll_i2suppgid(i2);
 289                 else
 290                         suppgids[1] = -1;
 291
 292 #if 0
 293         for (i = 0; i < current_ngroups; i++) {
 294                 if (suppgids[0] == -1) {
 295                         if (current_groups[i] != suppgids[1])
 296                                 suppgids[0] = current_groups[i];
 297                         continue;
 298                 }
 299                 if (suppgids[1] == -1) {
 300                         if (current_groups[i] != suppgids[0])
 301                                 suppgids[1] = current_groups[i];
 302                         continue;
 303                 }
 304                 break;
 305         }
 306 #endif
 307 }
 308
 309 static void ll_d_add(struct dentry *de, struct inode *inode)
 310 {
 311         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 312         /* d_instantiate */
 313         if (!list_empty(&de->d_alias)) {
 314                 spin_unlock(&dcache_lock);
 315                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 316                        de->d_name.len, de->d_name.name, de,
 317                        de->d_alias.next, de->d_alias.prev);
 318                 LBUG();
 319         }
 320         if (inode)
 321                 list_add(&de->d_alias, &inode->i_dentry);
 322         de->d_inode = inode;
 323
 324         /* d_rehash */
 325         if (!d_unhashed(de)) {
 326                 spin_unlock(&dcache_lock);
 327                 CERROR("dentry %.*s %p hash next %p\n",
 328                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 329                 LBUG();
 330         }
 331         d_rehash_cond(de, 0);
 332 }
 333
 334 /* Search "inode"'s alias list for a dentry that has the same name and parent
 335  * as de.  If found, return it.  If not found, return de.
 336  * Lustre can't use d_add_unique because don't unhash aliases for directory
 337  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 338  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 339  */
 340 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 341 {
 342         struct list_head *tmp;
 343         struct dentry *dentry;
 344         struct dentry *last_discon = NULL;
 345
 346         spin_lock(&ll_lookup_lock);
 347         spin_lock(&dcache_lock);
 348         list_for_each(tmp, &inode->i_dentry) {
 349                 dentry = list_entry(tmp, struct dentry, d_alias);
 350
 351                 /* We are called here with 'de' already on the aliases list. */
 352                 if (unlikely(dentry == de)) {
 353                         CERROR("whoops\n");
 354                         continue;
 355                 }
 356
 357                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 358                         LASSERT(last_discon == NULL);
 359                         last_discon = dentry;
 360                         continue;
 361                 }
 362
 363                 if (dentry->d_parent != de->d_parent)
 364                         continue;
 365
 366                 if (dentry->d_name.hash != de->d_name.hash)
 367                         continue;
 368
 369                 if (dentry->d_name.len != de->d_name.len)
 370                         continue;
 371
 372                 if (memcmp(dentry->d_name.name, de->d_name.name,
 373                            de->d_name.len) != 0)
 374                         continue;
 375
 376                 dget_locked(dentry);
 377                 lock_dentry(dentry);
 378                 __d_drop(dentry);
 379                 unlock_dentry(dentry);
 380                 ll_dops_init(dentry, 0);
 381                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 382                 spin_unlock(&dcache_lock);
 383                 spin_unlock(&ll_lookup_lock);
 384                 iput(inode);
 385                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 386                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 387                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 388                 return dentry;
 389         }
 390
 391         if (last_discon) {
 392                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 393                         "refc %d\n", last_discon, last_discon->d_inode,
 394                         atomic_read(&last_discon->d_count));
 395                 dget_locked(last_discon);
 396                 lock_dentry(last_discon);
 397                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 398                 unlock_dentry(last_discon);
 399                 spin_unlock(&dcache_lock);
 400                 spin_unlock(&ll_lookup_lock);
 401                 ll_dops_init(last_discon, 1);
 402                 d_rehash(de);
 403                 d_move(last_discon, de);
 404                 iput(inode);
 405                 return last_discon;
 406         }
 407         de->d_flags |= DCACHE_LUSTRE_INVALID;
 408         ll_d_add(de, inode);
 409
 410         spin_unlock(&dcache_lock);
 411         spin_unlock(&ll_lookup_lock);
 412
 413         return de;
 414 }
 415
 416 int ll_lookup_it_finish(struct ptlrpc_request *request,
 417                      struct lookup_intent *it, void *data)
 418 {
 419         struct it_cb_data *icbd = data;
 420         struct dentry **de = icbd->icbd_childp;
 421         struct inode *parent = icbd->icbd_parent;
 422         struct ll_sb_info *sbi = ll_i2sbi(parent);
 423         struct inode *inode = NULL;
 424         int rc;
 425         ENTRY;
 426
 427         /* NB 1 request reference will be taken away by ll_intent_lock()
 428          * when I return */
 429         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 430                 struct dentry *save = *de;
 431                 __u32 bits;
 432
 433                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 434                 if (rc)
 435                         RETURN(rc);
 436
 437                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 438                        inode, inode->i_ino, inode->i_generation);
 439                 md_set_lock_data(sbi->ll_md_exp,
 440                                  &it->d.lustre.it_lock_handle, inode, &bits);
 441
 442                 /* We used to query real size from OSTs here, but actually
 443                    this is not needed. For stat() calls size would be updated
 444                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 445                    2.4 and
 446                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 447                    Everybody else who needs correct file size would call
 448                    cl_glimpse_size or some equivalent themselves anyway.
 449                    Also see bug 7198. */
 450
 451                 ll_dops_init(*de, 1);
 452                 *de = ll_find_alias(inode, *de);
 453                 if (*de != save) {
 454                         struct ll_dentry_data *lld = ll_d2d(*de);
 455
 456                         /* just make sure the ll_dentry_data is ready */
 457                         if (unlikely(lld == NULL)) {
 458                                 ll_set_dd(*de);
 459                                 lld = ll_d2d(*de);
 460                                 if (likely(lld != NULL))
 461                                         lld->lld_sa_generation = 0;
 462                         }
 463                 }
 464                 /* we have lookup look - unhide dentry */
 465                 if (bits & MDS_INODELOCK_LOOKUP) {
 466                         lock_dentry(*de);
 467                         (*de)->d_flags &= ~(DCACHE_LUSTRE_INVALID);
 468                         unlock_dentry(*de);
 469                 }
 470         } else {
 471                 ll_dops_init(*de, 1);
 472                 /* Check that parent has UPDATE lock. If there is none, we
 473                    cannot afford to hash this dentry (done by ll_d_add) as it
 474                    might get picked up later when UPDATE lock will appear */
 475                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 476                         spin_lock(&dcache_lock);
 477                         ll_d_add(*de, NULL);
 478                         spin_unlock(&dcache_lock);
 479                 } else {
 480                         /* negative lookup - and don't have update lock to
 481                          * parent */
 482                         lock_dentry(*de);
 483                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 484                         unlock_dentry(*de);
 485
 486                         (*de)->d_inode = NULL;
 487                         /* We do not want to hash the dentry if don`t have a
 488                          * lock, but if this dentry is later used in d_move,
 489                          * we'd hit uninitialised list head d_hash, so we just
 490                          * do this to init d_hash field but leave dentry
 491                          * unhashed. (bug 10796). */
 492                         d_rehash(*de);
 493                         d_drop(*de);
 494                 }
 495         }
 496
 497         RETURN(0);
 498 }
 499
 500 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 501                                    struct lookup_intent *it, int lookup_flags)
 502 {
 503         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 504         struct dentry *save = dentry, *retval;
 505         struct ptlrpc_request *req = NULL;
 506         struct md_op_data *op_data;
 507         struct it_cb_data icbd;
 508         __u32 opc;
 509         int rc, first = 0;
 510         ENTRY;
 511
 512         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 513                 RETURN(ERR_PTR(-ENAMETOOLONG));
 514
 515         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 516                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 517                parent->i_generation, parent, LL_IT2STR(it));
 518
 519         if (d_mountpoint(dentry))
 520                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 521
 522         ll_frob_intent(&it, &lookup_it);
 523
 524         /* As do_lookup is called before follow_mount, root dentry may be left
 525          * not valid, revalidate it here. */
 526         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 527             (it->it_op & (IT_OPEN | IT_CREAT))) {
 528                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 529                 if (rc)
 530                         RETURN(ERR_PTR(rc));
 531         }
 532
 533         if (it->it_op == IT_GETATTR) {
 534                 first = ll_statahead_enter(parent, &dentry, 1);
 535                 if (first >= 0) {
 536                         ll_statahead_exit(dentry, first);
 537                         if (first == 1)
 538                                 RETURN(retval = dentry);
 539                 }
 540         }
 541
 542         icbd.icbd_childp = &dentry;
 543         icbd.icbd_parent = parent;
 544
 545         if (it->it_op & IT_CREAT ||
 546             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 547                 opc = LUSTRE_OPC_CREATE;
 548         else
 549                 opc = LUSTRE_OPC_ANY;
 550
 551         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 552                                      dentry->d_name.len, lookup_flags, opc,
 553                                      NULL);
 554         if (IS_ERR(op_data))
 555                 RETURN((void *)op_data);
 556
 557         it->it_create_mode &= ~current->fs->umask;
 558
 559         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 560                             lookup_flags, &req, ll_md_blocking_ast, 0);
 561         ll_finish_md_op_data(op_data);
 562         if (rc < 0)
 563                 GOTO(out, retval = ERR_PTR(rc));
 564
 565         rc = ll_lookup_it_finish(req, it, &icbd);
 566         if (rc != 0) {
 567                 ll_intent_release(it);
 568                 GOTO(out, retval = ERR_PTR(rc));
 569         }
 570
 571         if (first == -EEXIST)
 572                 ll_statahead_mark(dentry);
 573
 574         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 575             !S_ISREG(dentry->d_inode->i_mode) &&
 576             !S_ISDIR(dentry->d_inode->i_mode)) {
 577                 ll_release_openhandle(dentry, it);
 578         }
 579         ll_lookup_finish_locks(it, dentry);
 580
 581         if (dentry == save)
 582                 GOTO(out, retval = NULL);
 583         else
 584                 GOTO(out, retval = dentry);
 585  out:
 586         if (req)
 587                 ptlrpc_req_finished(req);
 588         return retval;
 589 }
 590
 591 #ifdef HAVE_VFS_INTENT_PATCHES
 592 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 593                                    struct nameidata *nd)
 594 {
 595         struct dentry *de;
 596         ENTRY;
 597
 598         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 599                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 600         else
 601                 de = ll_lookup_it(parent, dentry, NULL, 0);
 602
 603         RETURN(de);
 604 }
 605 #else
 606 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 607                                         int lookup_flags)
 608 {
 609         struct lookup_intent *it;
 610
 611         OBD_ALLOC(it, sizeof(*it));
 612         if (!it)
 613                 return ERR_PTR(-ENOMEM);
 614
 615         if (lookup_flags & LOOKUP_OPEN) {
 616                 it->it_op = IT_OPEN;
 617                 if (lookup_flags & LOOKUP_CREATE)
 618                         it->it_op |= IT_CREAT;
 619                 it->it_create_mode = oit->create_mode;
 620                 it->it_flags = oit->flags;
 621         } else {
 622                 it->it_op = IT_GETATTR;
 623         }
 624
 625 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 626                 /* Since there is no way to pass our intent to ll_file_open,
 627                  * just check the file is there. Actual open will be done
 628                  * in ll_file_open */
 629                 if (it->it_op & IT_OPEN)
 630                         it->it_op = IT_LOOKUP;
 631 #endif
 632
 633         return it;
 634 }
 635
 636 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 637                                    struct nameidata *nd)
 638 {
 639         struct dentry *de;
 640         ENTRY;
 641
 642         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 643                 struct lookup_intent *it;
 644
 645 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 646                 /* Did we came here from failed revalidate just to propagate
 647                  * its error? */
 648                 if (nd->flags & LOOKUP_OPEN)
 649                         if (IS_ERR(nd->intent.open.file))
 650                                 RETURN((struct dentry *)nd->intent.open.file);
 651 #endif
 652
 653                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 654                         it = ll_d2d(dentry)->lld_it;
 655                         ll_d2d(dentry)->lld_it = NULL;
 656                 } else {
 657                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 658                         if (IS_ERR(it))
 659                                 RETURN((struct dentry *)it);
 660                 }
 661
 662                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 663                 if (de)
 664                         dentry = de;
 665                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 666                         if (dentry->d_inode &&
 667                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 668 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 669                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 670                                         // We cannot call open here as it would
 671                                         // deadlock.
 672                                         ptlrpc_req_finished(
 673                                                        (struct ptlrpc_request *)
 674                                                           it->d.lustre.it_data);
 675                                 } else {
 676 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 677 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 678  * nd->intent.open.file for error, so we need to return it as lookup's result
 679  * instead */
 680                                         struct file *filp;
 681                                         nd->intent.open.file->private_data = it;
 682                                         filp =lookup_instantiate_filp(nd,dentry,
 683                                                                       NULL);
 684                                         if (IS_ERR(filp)) {
 685                                                 if (de)
 686                                                         dput(de);
 687                                                 de = (struct dentry *) filp;
 688                                         }
 689 #else
 690                                         nd->intent.open.file->private_data = it;
 691                                         (void)lookup_instantiate_filp(nd,dentry,
 692                                                                       NULL);
 693 #endif
 694
 695                                 }
 696 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 697                                 /* Release open handle as we have no way to
 698                                  * pass it to ll_file_open */
 699                                 ll_release_openhandle(dentry, it);
 700 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 701                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 702                                 // XXX This can only reliably work on assumption
 703                                 // that there are NO hashed negative dentries.
 704                                 ll_d2d(dentry)->lld_it = it;
 705                                 it = NULL; /* Will be freed in ll_create_nd */
 706                                 /* We absolutely depend on ll_create_nd to be
 707                                  * called to not leak this intent and possible
 708                                  * data attached to it */
 709                         }
 710                 }
 711
 712                 if (it) {
 713                         ll_intent_release(it);
 714                         OBD_FREE(it, sizeof(*it));
 715                 }
 716         } else {
 717                 de = ll_lookup_it(parent, dentry, NULL, 0);
 718         }
 719
 720         RETURN(de);
 721 }
 722 #endif
 723
 724 /* We depend on "mode" being set with the proper file type/umask by now */
 725 static struct inode *ll_create_node(struct inode *dir, const char *name,
 726                                     int namelen, const void *data, int datalen,
 727                                     int mode, __u64 extra,
 728                                     struct lookup_intent *it)
 729 {
 730         struct inode *inode = NULL;
 731         struct ptlrpc_request *request = NULL;
 732         struct ll_sb_info *sbi = ll_i2sbi(dir);
 733         int rc;
 734         ENTRY;
 735
 736         LASSERT(it && it->d.lustre.it_disposition);
 737
 738         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 739         request = it->d.lustre.it_data;
 740         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 741         rc = ll_prep_inode(&inode, request, dir->i_sb);
 742         if (rc)
 743                 GOTO(out, inode = ERR_PTR(rc));
 744
 745         LASSERT(list_empty(&inode->i_dentry));
 746
 747         /* We asked for a lock on the directory, but were granted a
 748          * lock on the inode.  Since we finally have an inode pointer,
 749          * stuff it in the lock. */
 750         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 751                inode, inode->i_ino, inode->i_generation);
 752         md_set_lock_data(sbi->ll_md_exp,
 753                          &it->d.lustre.it_lock_handle, inode, NULL);
 754         EXIT;
 755  out:
 756         ptlrpc_req_finished(request);
 757         return inode;
 758 }
 759
 760 /*
 761  * By the time this is called, we already have created the directory cache
 762  * entry for the new file, but it is so far negative - it has no inode.
 763  *
 764  * We defer creating the OBD object(s) until open, to keep the intent and
 765  * non-intent code paths similar, and also because we do not have the MDS
 766  * inode number before calling ll_create_node() (which is needed for LOV),
 767  * so we would need to do yet another RPC to the MDS to store the LOV EA
 768  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 769  * lmm_size in datalen (the MDS still has code which will handle that).
 770  *
 771  * If the create succeeds, we fill in the inode information
 772  * with d_instantiate().
 773  */
 774 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 775                         struct lookup_intent *it)
 776 {
 777         struct inode *inode;
 778         int rc = 0;
 779         ENTRY;
 780
 781         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 782                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 783                dir->i_generation, dir, LL_IT2STR(it));
 784
 785         rc = it_open_error(DISP_OPEN_CREATE, it);
 786         if (rc)
 787                 RETURN(rc);
 788
 789         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 790                                NULL, 0, mode, 0, it);
 791         if (IS_ERR(inode)) {
 792                 RETURN(PTR_ERR(inode));
 793         }
 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         /* mtime is always updated with ctime, but can be set in past.
 814            As write and utime(2) may happen within 1 second, and utime's
 815            mtime has a priority over write's one, so take mtime from mds
 816            for the same ctimes. */
 817         if (body->valid & OBD_MD_FLCTIME &&
 818             body->ctime >= LTIME_S(inode->i_ctime)) {
 819                 LTIME_S(inode->i_ctime) = body->ctime;
 820
 821                 if (body->valid & OBD_MD_FLMTIME) {
 822                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 823                                "to "LPU64"\n", inode->i_ino,
 824                                LTIME_S(inode->i_mtime), body->mtime);
 825                         LTIME_S(inode->i_mtime) = body->mtime;
 826                 }
 827         }
 828 }
 829
 830 static int ll_new_node(struct inode *dir, struct qstr *name,
 831                        const char *tgt, int mode, int rdev,
 832                        struct dentry *dchild, __u32 opc)
 833 {
 834         struct ptlrpc_request *request = NULL;
 835         struct md_op_data *op_data;
 836         struct inode *inode = NULL;
 837         struct ll_sb_info *sbi = ll_i2sbi(dir);
 838         int tgt_len = 0;
 839         int err;
 840
 841         ENTRY;
 842         if (unlikely(tgt != NULL))
 843                 tgt_len = strlen(tgt) + 1;
 844
 845         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 846                                      name->len, 0, opc, NULL);
 847         if (IS_ERR(op_data))
 848                 GOTO(err_exit, err = PTR_ERR(op_data));
 849
 850         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 851                         current->fsuid, current->fsgid,
 852                         cfs_curproc_cap_pack(), rdev, &request);
 853         ll_finish_md_op_data(op_data);
 854         if (err)
 855                 GOTO(err_exit, err);
 856
 857         ll_update_times(request, dir);
 858
 859         if (dchild) {
 860                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 861                 if (err)
 862                      GOTO(err_exit, err);
 863
 864                 d_drop(dchild);
 865                 d_instantiate(dchild, inode);
 866                 EXIT;
 867         }
 868 err_exit:
 869         ptlrpc_req_finished(request);
 870
 871         return err;
 872 }
 873
 874 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 875                             unsigned rdev, struct dentry *dchild)
 876 {
 877         int err;
 878         ENTRY;
 879
 880         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 881                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 882                mode, rdev);
 883
 884         mode &= ~current->fs->umask;
 885
 886         switch (mode & S_IFMT) {
 887         case 0:
 888                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 889         case S_IFREG:
 890         case S_IFCHR:
 891         case S_IFBLK:
 892         case S_IFIFO:
 893         case S_IFSOCK:
 894                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 895                                   LUSTRE_OPC_MKNOD);
 896                 break;
 897         case S_IFDIR:
 898                 err = -EPERM;
 899                 break;
 900         default:
 901                 err = -EINVAL;
 902         }
 903         RETURN(err);
 904 }
 905
 906 #ifndef HAVE_VFS_INTENT_PATCHES
 907 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 908                         int mode, struct nameidata *nd)
 909 {
 910         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 911         int rc;
 912
 913         if (!it)
 914                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 915
 916         ll_d2d(dentry)->lld_it = NULL;
 917
 918         /* Was there an error? Propagate it! */
 919         if (it->d.lustre.it_status) {
 920                 rc = it->d.lustre.it_status;
 921                 goto out;
 922         }
 923
 924         rc = ll_create_it(dir, dentry, mode, it);
 925 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 926         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 927                 nd->intent.open.file->private_data = it;
 928                 lookup_instantiate_filp(nd, dentry, NULL);
 929         }
 930 #else
 931         ll_release_openhandle(dentry,it);
 932 #endif
 933
 934 out:
 935         ll_intent_release(it);
 936         OBD_FREE(it, sizeof(*it));
 937
 938         return rc;
 939 }
 940 #else
 941 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 942                         int mode, struct nameidata *nd)
 943 {
 944         if (!nd || !nd->intent.d.lustre.it_disposition)
 945                 /* No saved request? Just mknod the file */
 946                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 947
 948         return ll_create_it(dir, dentry, mode, &nd->intent);
 949 }
 950 #endif
 951
 952 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 953                               const char *tgt, struct dentry *dchild)
 954 {
 955         int err;
 956         ENTRY;
 957
 958         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 959                name->len, name->name, dir->i_ino, dir->i_generation,
 960                dir, 3000, tgt);
 961
 962         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 963                           0, dchild, LUSTRE_OPC_SYMLINK);
 964         RETURN(err);
 965 }
 966
 967 static int ll_link_generic(struct inode *src,  struct inode *dir,
 968                            struct qstr *name, struct dentry *dchild)
 969 {
 970         struct ll_sb_info *sbi = ll_i2sbi(dir);
 971         struct ptlrpc_request *request = NULL;
 972         struct md_op_data *op_data;
 973         int err;
 974
 975         ENTRY;
 976         CDEBUG(D_VFSTRACE,
 977                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 978                src->i_ino, src->i_generation, src, dir->i_ino,
 979                dir->i_generation, dir, name->len, name->name);
 980
 981         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 982                                      0, LUSTRE_OPC_ANY, NULL);
 983         if (IS_ERR(op_data))
 984                 RETURN(PTR_ERR(op_data));
 985
 986         err = md_link(sbi->ll_md_exp, op_data, &request);
 987         ll_finish_md_op_data(op_data);
 988         if (err)
 989                 GOTO(out, err);
 990         if (dchild)
 991                 d_drop(dchild);
 992
 993         ll_update_times(request, dir);
 994         EXIT;
 995 out:
 996         ptlrpc_req_finished(request);
 997         RETURN(err);
 998 }
 999
1000 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
1001                             int mode, struct dentry *dchild)
1002
1003 {
1004         int err;
1005         ENTRY;
1006
1007         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1008                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1009
1010         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1011         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
1012
1013         RETURN(err);
1014 }
1015
1016 /* Try to find the child dentry by its name.
1017    If found, put the result fid into @fid. */
1018 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1019                              struct lu_fid *fid)
1020 {
1021         struct dentry *parent, *child;
1022
1023         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1024         child = d_lookup(parent, name);
1025         if (child) {
1026                 if (child->d_inode)
1027                         *fid = *ll_inode2fid(child->d_inode);
1028                 dput(child);
1029         }
1030 }
1031
1032 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1033                             struct dentry *dchild, struct qstr *name)
1034 {
1035         struct ptlrpc_request *request = NULL;
1036         struct md_op_data *op_data;
1037         int rc;
1038         ENTRY;
1039
1040         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1041                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1042
1043         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1044                 RETURN(-EBUSY);
1045
1046         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1047                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1048         if (IS_ERR(op_data))
1049                 RETURN(PTR_ERR(op_data));
1050
1051         ll_get_child_fid(dir, name, &op_data->op_fid3);
1052         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1053         ll_finish_md_op_data(op_data);
1054         if (rc == 0)
1055                 ll_update_times(request, dir);
1056         ptlrpc_req_finished(request);
1057         RETURN(rc);
1058 }
1059
1060 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1061 {
1062         struct mdt_body *body;
1063         struct lov_mds_md *eadata;
1064         struct lov_stripe_md *lsm = NULL;
1065         struct obd_trans_info oti = { 0 };
1066         struct obdo *oa;
1067         struct obd_capa *oc = NULL;
1068         int rc;
1069         ENTRY;
1070
1071         /* req is swabbed so this is safe */
1072         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1073         if (!(body->valid & OBD_MD_FLEASIZE))
1074                 RETURN(0);
1075
1076         if (body->eadatasize == 0) {
1077                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1078                 GOTO(out, rc = -EPROTO);
1079         }
1080
1081         /* The MDS sent back the EA because we unlinked the last reference
1082          * to this file. Use this EA to unlink the objects on the OST.
1083          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1084          * check it is complete and sensible. */
1085         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1086                                               body->eadatasize);
1087         LASSERT(eadata != NULL);
1088
1089         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1090         if (rc < 0) {
1091                 CERROR("obd_unpackmd: %d\n", rc);
1092                 GOTO(out, rc);
1093         }
1094         LASSERT(rc >= sizeof(*lsm));
1095
1096         rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
1097         if (rc)
1098                 GOTO(out_free_memmd, rc);
1099
1100         OBDO_ALLOC(oa);
1101         if (oa == NULL)
1102                 GOTO(out_free_memmd, rc = -ENOMEM);
1103
1104         oa->o_id = lsm->lsm_object_id;
1105         oa->o_gr = lsm->lsm_object_gr;
1106         oa->o_mode = body->mode & S_IFMT;
1107         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1108
1109         if (body->valid & OBD_MD_FLCOOKIE) {
1110                 oa->o_valid |= OBD_MD_FLCOOKIE;
1111                 oti.oti_logcookies =
1112                         req_capsule_server_sized_get(&request->rq_pill,
1113                                                      &RMF_LOGCOOKIES,
1114                                                    sizeof(struct llog_cookie) *
1115                                                      lsm->lsm_stripe_count);
1116                 if (oti.oti_logcookies == NULL) {
1117                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1118                         body->valid &= ~OBD_MD_FLCOOKIE;
1119                 }
1120         }
1121
1122         if (body->valid & OBD_MD_FLOSSCAPA) {
1123                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1124                 if (rc)
1125                         GOTO(out_free_memmd, rc);
1126         }
1127
1128         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1129         capa_put(oc);
1130         OBDO_FREE(oa);
1131         if (rc)
1132                 CERROR("obd destroy objid "LPX64" error %d\n",
1133                        lsm->lsm_object_id, rc);
1134  out_free_memmd:
1135         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1136  out:
1137         return rc;
1138 }
1139
1140 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1141                              struct dentry *dchild, struct qstr *name)
1142 {
1143         struct ptlrpc_request *request = NULL;
1144         struct md_op_data *op_data;
1145         int rc;
1146         ENTRY;
1147         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1148                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1149
1150         /*
1151          * XXX: unlink bind mountpoint maybe call to here,
1152          * just check it as vfs_unlink does.
1153          */
1154         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1155                 RETURN(-EBUSY);
1156
1157         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1158                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1159         if (IS_ERR(op_data))
1160                 RETURN(PTR_ERR(op_data));
1161
1162         ll_get_child_fid(dir, name, &op_data->op_fid3);
1163         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1164         ll_finish_md_op_data(op_data);
1165         if (rc)
1166                 GOTO(out, rc);
1167
1168         ll_update_times(request, dir);
1169
1170         rc = ll_objects_destroy(request, dir);
1171  out:
1172         ptlrpc_req_finished(request);
1173         RETURN(rc);
1174 }
1175
1176 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1177                              struct dentry *src_dchild, struct qstr *src_name,
1178                              struct inode *tgt, struct dentry *tgt_dparent,
1179                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1180 {
1181         struct ptlrpc_request *request = NULL;
1182         struct ll_sb_info *sbi = ll_i2sbi(src);
1183         struct md_op_data *op_data;
1184         int err;
1185         ENTRY;
1186         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1187                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1188                src->i_ino, src->i_generation, src, tgt_name->len,
1189                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1190
1191         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1192             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1193                 RETURN(-EBUSY);
1194
1195         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1196                                      LUSTRE_OPC_ANY, NULL);
1197         if (IS_ERR(op_data))
1198                 RETURN(PTR_ERR(op_data));
1199
1200         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1201         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1202         err = md_rename(sbi->ll_md_exp, op_data,
1203                         src_name->name, src_name->len,
1204                         tgt_name->name, tgt_name->len, &request);
1205         ll_finish_md_op_data(op_data);
1206         if (!err) {
1207                 ll_update_times(request, src);
1208                 ll_update_times(request, tgt);
1209                 err = ll_objects_destroy(request, src);
1210         }
1211
1212         ptlrpc_req_finished(request);
1213
1214         RETURN(err);
1215 }
1216
1217 #ifdef HAVE_VFS_INTENT_PATCHES
1218 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1219 {
1220         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1221 }
1222 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1223 {
1224         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1225                                  NULL, &srcnd->last,
1226                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1227                                  NULL, &tgtnd->last);
1228 }
1229 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1230 {
1231         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1232                                &tgtnd->last, NULL);
1233 }
1234 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1235 {
1236         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1237 }
1238 static int ll_rmdir_raw(struct nameidata *nd)
1239 {
1240         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1241                                 &nd->last);
1242 }
1243 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1244 {
1245         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1246 }
1247 static int ll_unlink_raw(struct nameidata *nd)
1248 {
1249         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1250                                  &nd->last);
1251 }
1252 #endif
1253
1254 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1255                     ll_dev_t rdev)
1256 {
1257         return ll_mknod_generic(dir, &dchild->d_name, mode,
1258                                 old_encode_dev(rdev), dchild);
1259 }
1260
1261 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1262 {
1263         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1264 }
1265 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1266 {
1267         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1268 }
1269 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1270 {
1271         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1272 }
1273 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1274                       const char *oldname)
1275 {
1276         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1277 }
1278 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1279                    struct dentry *new_dentry)
1280 {
1281         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1282                                new_dentry);
1283 }
1284 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1285                      struct inode *new_dir, struct dentry *new_dentry)
1286 {
1287         int err;
1288         err = ll_rename_generic(old_dir, NULL,
1289                                  old_dentry, &old_dentry->d_name,
1290                                  new_dir, NULL, new_dentry,
1291                                  &new_dentry->d_name);
1292         if (!err) {
1293 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1294                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1295 #endif
1296                         d_move(old_dentry, new_dentry);
1297         }
1298         return err;
1299 }
1300
1301 struct inode_operations ll_dir_inode_operations = {
1302 #ifdef HAVE_VFS_INTENT_PATCHES
1303         .link_raw           = ll_link_raw,
1304         .unlink_raw         = ll_unlink_raw,
1305         .symlink_raw        = ll_symlink_raw,
1306         .mkdir_raw          = ll_mkdir_raw,
1307         .rmdir_raw          = ll_rmdir_raw,
1308         .mknod_raw          = ll_mknod_raw,
1309         .rename_raw         = ll_rename_raw,
1310         .setattr            = ll_setattr,
1311         .setattr_raw        = ll_setattr_raw,
1312 #endif
1313         .mknod              = ll_mknod,
1314         .lookup             = ll_lookup_nd,
1315         .create             = ll_create_nd,
1316         /* We need all these non-raw things for NFSD, to not patch it. */
1317         .unlink             = ll_unlink,
1318         .mkdir              = ll_mkdir,
1319         .rmdir              = ll_rmdir,
1320         .symlink            = ll_symlink,
1321         .link               = ll_link,
1322         .rename             = ll_rename,
1323         .setattr            = ll_setattr,
1324         .getattr            = ll_getattr,
1325         .permission         = ll_inode_permission,
1326         .setxattr           = ll_setxattr,
1327         .getxattr           = ll_getxattr,
1328         .listxattr          = ll_listxattr,
1329         .removexattr        = ll_removexattr,
1330 };
1331
1332 struct inode_operations ll_special_inode_operations = {
1333 #ifdef HAVE_VFS_INTENT_PATCHES
1334         .setattr_raw    = ll_setattr_raw,
1335 #endif
1336         .setattr        = ll_setattr,
1337         .getattr        = ll_getattr,
1338         .permission     = ll_inode_permission,
1339         .setxattr       = ll_setxattr,
1340         .getxattr       = ll_getxattr,
1341         .listxattr      = ll_listxattr,
1342         .removexattr    = ll_removexattr,
1343 };