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                         ll_read_inode2(inode, md);
 127                         unlock_new_inode(inode);
 128                 } else {
 129                         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 130                                 ll_update_inode(inode, md);
 131                 }
 132                 CDEBUG(D_VFSTRACE, "got inode: %lu/%u(%p) for "DFID"\n",
 133                        inode->i_ino, inode->i_generation, inode,
 134                        PFID(&lli->lli_fid));
 135         }
 136
 137         RETURN(inode);
 138 }
 139
 140 static void ll_drop_negative_dentry(struct inode *dir)
 141 {
 142         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 143
 144         spin_lock(&ll_lookup_lock);
 145         spin_lock(&dcache_lock);
 146 restart:
 147         list_for_each_entry_safe(dentry, tmp_alias,
 148                                  &dir->i_dentry,d_alias) {
 149                 if (!list_empty(&dentry->d_subdirs)) {
 150                         struct dentry *child;
 151                         list_for_each_entry_safe(child, tmp_subdir,
 152                                                  &dentry->d_subdirs,
 153                                                  d_child) {
 154                                 /* XXX Print some debug here? */
 155                                 if (!child->d_inode)
 156                                 /* Negative dentry. If we were
 157                                    dropping dcache lock, go
 158                                    throught the list again */
 159                                         if (ll_drop_dentry(child))
 160                                                 goto restart;
 161                         }
 162                 }
 163         }
 164         spin_unlock(&dcache_lock);
 165         spin_unlock(&ll_lookup_lock);
 166 }
 167
 168
 169 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 170                        void *data, int flag)
 171 {
 172         int rc;
 173         struct lustre_handle lockh;
 174         ENTRY;
 175
 176         switch (flag) {
 177         case LDLM_CB_BLOCKING:
 178                 ldlm_lock2handle(lock, &lockh);
 179                 rc = ldlm_cli_cancel(&lockh);
 180                 if (rc < 0) {
 181                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 182                         RETURN(rc);
 183                 }
 184                 break;
 185         case LDLM_CB_CANCELING: {
 186                 struct inode *inode = ll_inode_from_lock(lock);
 187                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 188                 struct lu_fid *fid;
 189
 190                 /* Invalidate all dentries associated with this inode */
 191                 if (inode == NULL)
 192                         break;
 193
 194                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 195                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 196                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 197                         bits &= ~MDS_INODELOCK_LOOKUP;
 198                 if ((bits & MDS_INODELOCK_UPDATE) &&
 199                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 200                         bits &= ~MDS_INODELOCK_UPDATE;
 201                 if ((bits & MDS_INODELOCK_OPEN) &&
 202                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 203                         bits &= ~MDS_INODELOCK_OPEN;
 204
 205                 fid = ll_inode2fid(inode);
 206                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 207                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 208                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 209                         LDLM_ERROR(lock, "data mismatch with object "
 210                                    DFID" (%p)", PFID(fid), inode);
 211                 }
 212
 213                 if (bits & MDS_INODELOCK_OPEN) {
 214                         int flags = 0;
 215                         switch (lock->l_req_mode) {
 216                         case LCK_CW:
 217                                 flags = FMODE_WRITE;
 218                                 break;
 219                         case LCK_PR:
 220                                 flags = FMODE_EXEC;
 221                                 break;
 222                         case LCK_CR:
 223                                 flags = FMODE_READ;
 224                                 break;
 225                         default:
 226                                 CERROR("Unexpected lock mode for OPEN lock "
 227                                        "%d, inode %ld\n", lock->l_req_mode,
 228                                        inode->i_ino);
 229                         }
 230                         ll_md_real_close(inode, flags);
 231                 }
 232
 233                 if (bits & MDS_INODELOCK_UPDATE)
 234                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 235
 236                 if (S_ISDIR(inode->i_mode) &&
 237                      (bits & MDS_INODELOCK_UPDATE)) {
 238                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 239                                inode->i_ino);
 240                         truncate_inode_pages(inode->i_mapping, 0);
 241                         ll_drop_negative_dentry(inode);
 242                 }
 243
 244                 if (inode->i_sb->s_root &&
 245                     inode != inode->i_sb->s_root->d_inode &&
 246                     (bits & MDS_INODELOCK_LOOKUP))
 247                         ll_unhash_aliases(inode);
 248                 iput(inode);
 249                 break;
 250         }
 251         default:
 252                 LBUG();
 253         }
 254
 255         RETURN(0);
 256 }
 257
 258 __u32 ll_i2suppgid(struct inode *i)
 259 {
 260         if (in_group_p(i->i_gid))
 261                 return (__u32)i->i_gid;
 262         else
 263                 return (__u32)(-1);
 264 }
 265
 266 /* Pack the required supplementary groups into the supplied groups array.
 267  * If we don't need to use the groups from the target inode(s) then we
 268  * instead pack one or more groups from the user's supplementary group
 269  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 270 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 271 {
 272 #if 0
 273         int i;
 274 #endif
 275
 276         LASSERT(i1 != NULL);
 277         LASSERT(suppgids != NULL);
 278
 279         suppgids[0] = ll_i2suppgid(i1);
 280
 281         if (i2)
 282                 suppgids[1] = ll_i2suppgid(i2);
 283                 else
 284                         suppgids[1] = -1;
 285
 286 #if 0
 287         for (i = 0; i < current_ngroups; i++) {
 288                 if (suppgids[0] == -1) {
 289                         if (current_groups[i] != suppgids[1])
 290                                 suppgids[0] = current_groups[i];
 291                         continue;
 292                 }
 293                 if (suppgids[1] == -1) {
 294                         if (current_groups[i] != suppgids[0])
 295                                 suppgids[1] = current_groups[i];
 296                         continue;
 297                 }
 298                 break;
 299         }
 300 #endif
 301 }
 302
 303 static void ll_d_add(struct dentry *de, struct inode *inode)
 304 {
 305         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 306         /* d_instantiate */
 307         if (!list_empty(&de->d_alias)) {
 308                 spin_unlock(&dcache_lock);
 309                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 310                        de->d_name.len, de->d_name.name, de,
 311                        de->d_alias.next, de->d_alias.prev);
 312                 LBUG();
 313         }
 314         if (inode)
 315                 list_add(&de->d_alias, &inode->i_dentry);
 316         de->d_inode = inode;
 317
 318         /* d_rehash */
 319         if (!d_unhashed(de)) {
 320                 spin_unlock(&dcache_lock);
 321                 CERROR("dentry %.*s %p hash next %p\n",
 322                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 323                 LBUG();
 324         }
 325         d_rehash_cond(de, 0);
 326 }
 327
 328 /* Search "inode"'s alias list for a dentry that has the same name and parent
 329  * as de.  If found, return it.  If not found, return de.
 330  * Lustre can't use d_add_unique because don't unhash aliases for directory
 331  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 332  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 333  */
 334 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 335 {
 336         struct list_head *tmp;
 337         struct dentry *dentry;
 338         struct dentry *last_discon = NULL;
 339
 340         spin_lock(&ll_lookup_lock);
 341         spin_lock(&dcache_lock);
 342         list_for_each(tmp, &inode->i_dentry) {
 343                 dentry = list_entry(tmp, struct dentry, d_alias);
 344
 345                 /* We are called here with 'de' already on the aliases list. */
 346                 if (unlikely(dentry == de)) {
 347                         CERROR("whoops\n");
 348                         continue;
 349                 }
 350
 351                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 352                         LASSERT(last_discon == NULL);
 353                         last_discon = dentry;
 354                         continue;
 355                 }
 356
 357                 if (dentry->d_parent != de->d_parent)
 358                         continue;
 359
 360                 if (dentry->d_name.hash != de->d_name.hash)
 361                         continue;
 362
 363                 if (dentry->d_name.len != de->d_name.len)
 364                         continue;
 365
 366                 if (memcmp(dentry->d_name.name, de->d_name.name,
 367                            de->d_name.len) != 0)
 368                         continue;
 369
 370                 dget_locked(dentry);
 371                 lock_dentry(dentry);
 372                 __d_drop(dentry);
 373 #ifdef DCACHE_LUSTRE_INVALID
 374                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 375 #endif
 376                 unlock_dentry(dentry);
 377                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 378                 spin_unlock(&dcache_lock);
 379                 spin_unlock(&ll_lookup_lock);
 380                 iput(inode);
 381                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 382                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 383                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 384                 return dentry;
 385         }
 386
 387         if (last_discon) {
 388                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 389                         "refc %d\n", last_discon, last_discon->d_inode,
 390                         atomic_read(&last_discon->d_count));
 391                 dget_locked(last_discon);
 392                 spin_unlock(&dcache_lock);
 393                 spin_unlock(&ll_lookup_lock);
 394                 d_rehash(de);
 395                 d_move(last_discon, de);
 396                 iput(inode);
 397                 return last_discon;
 398         }
 399
 400         ll_d_add(de, inode);
 401
 402         spin_unlock(&dcache_lock);
 403         spin_unlock(&ll_lookup_lock);
 404
 405         return de;
 406 }
 407
 408 static inline void ll_dop_init(struct dentry *de, int *set)
 409 {
 410         lock_dentry(de);
 411         if (likely(de->d_op != &ll_d_ops)) {
 412                 de->d_op = &ll_init_d_ops;
 413                 *set = 1;
 414         }
 415         unlock_dentry(de);
 416 }
 417
 418 static inline void ll_dop_fini(struct dentry *de, int succ)
 419 {
 420         lock_dentry(de);
 421         if (likely(de->d_op == &ll_init_d_ops)) {
 422                 if (succ)
 423                         de->d_op = &ll_d_ops;
 424                 else
 425                         de->d_op = &ll_fini_d_ops;
 426                 unlock_dentry(de);
 427                 smp_wmb();
 428                 ll_d_wakeup(de);
 429         } else {
 430                 if (succ)
 431                         de->d_op = &ll_d_ops;
 432                 unlock_dentry(de);
 433         }
 434 }
 435
 436 int ll_lookup_it_finish(struct ptlrpc_request *request,
 437                      struct lookup_intent *it, void *data)
 438 {
 439         struct it_cb_data *icbd = data;
 440         struct dentry **de = icbd->icbd_childp;
 441         struct inode *parent = icbd->icbd_parent;
 442         struct ll_sb_info *sbi = ll_i2sbi(parent);
 443         struct inode *inode = NULL;
 444         int set = 0, rc;
 445         ENTRY;
 446
 447         ll_dop_init(*de, &set);
 448
 449         /* NB 1 request reference will be taken away by ll_intent_lock()
 450          * when I return */
 451         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 452                 struct dentry *save = *de;
 453
 454                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 455                 if (rc) {
 456                         if (set)
 457                                 ll_dop_fini(*de, 0);
 458                         RETURN(rc);
 459                 }
 460
 461                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 462                        inode, inode->i_ino, inode->i_generation);
 463                 md_set_lock_data(sbi->ll_md_exp,
 464                                  &it->d.lustre.it_lock_handle, inode);
 465
 466                 /* We used to query real size from OSTs here, but actually
 467                    this is not needed. For stat() calls size would be updated
 468                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 469                    2.4 and
 470                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 471                    Everybody else who needs correct file size would call
 472                    ll_glimpse_size or some equivalent themselves anyway.
 473                    Also see bug 7198. */
 474
 475                 *de = ll_find_alias(inode, *de);
 476                 if (set && *de != save)
 477                         ll_dop_fini(save, 0);
 478         } else {
 479                 /* Check that parent has UPDATE lock. If there is none, we
 480                    cannot afford to hash this dentry (done by ll_d_add) as it
 481                    might get picked up later when UPDATE lock will appear */
 482                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 483                         spin_lock(&dcache_lock);
 484                         ll_d_add(*de, inode);
 485                         spin_unlock(&dcache_lock);
 486                 } else {
 487                         (*de)->d_inode = NULL;
 488                         /* We do not want to hash the dentry if don`t have a
 489                          * lock, but if this dentry is later used in d_move,
 490                          * we'd hit uninitialised list head d_hash, so we just
 491                          * do this to init d_hash field but leave dentry
 492                          * unhashed. (bug 10796). */
 493                         d_rehash(*de);
 494                         d_drop(*de);
 495                 }
 496         }
 497
 498         ll_set_dd(*de);
 499
 500         ll_dop_fini(*de, 1);
 501
 502         RETURN(0);
 503 }
 504
 505 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 506                                    struct lookup_intent *it, int lookup_flags)
 507 {
 508         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 509         struct dentry *save = dentry, *retval;
 510         struct ptlrpc_request *req = NULL;
 511         struct md_op_data *op_data;
 512         struct it_cb_data icbd;
 513         __u32 opc;
 514         int rc;
 515         ENTRY;
 516
 517         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 518                 RETURN(ERR_PTR(-ENAMETOOLONG));
 519
 520         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 521                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 522                parent->i_generation, parent, LL_IT2STR(it));
 523
 524         if (d_mountpoint(dentry))
 525                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 526
 527         ll_frob_intent(&it, &lookup_it);
 528
 529         /* As do_lookup is called before follow_mount, root dentry may be left
 530          * not valid, revalidate it here. */
 531         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 532             (it->it_op & (IT_OPEN | IT_CREAT))) {
 533                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 534                 if (rc)
 535                         RETURN(ERR_PTR(rc));
 536         }
 537
 538         if (it->it_op == IT_GETATTR) {
 539                 rc = ll_statahead_enter(parent, &dentry, 1);
 540                 if (rc >= 0) {
 541                         ll_statahead_exit(dentry, rc);
 542                         if (rc == 1)
 543                                 RETURN(retval = dentry);
 544                 }
 545         }
 546
 547         icbd.icbd_childp = &dentry;
 548         icbd.icbd_parent = parent;
 549
 550         if (it->it_op & IT_CREAT ||
 551             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 552                 opc = LUSTRE_OPC_CREATE;
 553         else
 554                 opc = LUSTRE_OPC_ANY;
 555
 556         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 557                                      dentry->d_name.len, lookup_flags, opc,
 558                                      NULL);
 559         if (IS_ERR(op_data))
 560                 RETURN((void *)op_data);
 561
 562         it->it_create_mode &= ~current->fs->umask;
 563
 564         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 565                             lookup_flags, &req, ll_md_blocking_ast, 0);
 566         ll_finish_md_op_data(op_data);
 567         if (rc < 0)
 568                 GOTO(out, retval = ERR_PTR(rc));
 569
 570         rc = ll_lookup_it_finish(req, it, &icbd);
 571         if (rc != 0) {
 572                 ll_intent_release(it);
 573                 GOTO(out, retval = ERR_PTR(rc));
 574         }
 575
 576         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 577             !S_ISREG(dentry->d_inode->i_mode) &&
 578             !S_ISDIR(dentry->d_inode->i_mode)) {
 579                 ll_release_openhandle(dentry, it);
 580         }
 581         ll_lookup_finish_locks(it, dentry);
 582
 583         if (dentry == save)
 584                 GOTO(out, retval = NULL);
 585         else
 586                 GOTO(out, retval = dentry);
 587  out:
 588         if (req)
 589                 ptlrpc_req_finished(req);
 590         return retval;
 591 }
 592
 593 #ifdef HAVE_VFS_INTENT_PATCHES
 594 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 595                                    struct nameidata *nd)
 596 {
 597         struct dentry *de;
 598         ENTRY;
 599
 600         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 601                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 602         else
 603                 de = ll_lookup_it(parent, dentry, NULL, 0);
 604
 605         RETURN(de);
 606 }
 607 #else
 608 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 609                                         int lookup_flags)
 610 {
 611         struct lookup_intent *it;
 612
 613         OBD_ALLOC(it, sizeof(*it));
 614         if (!it)
 615                 return ERR_PTR(-ENOMEM);
 616
 617         if (lookup_flags & LOOKUP_OPEN) {
 618                 it->it_op = IT_OPEN;
 619                 if (lookup_flags & LOOKUP_CREATE)
 620                         it->it_op |= IT_CREAT;
 621                 it->it_create_mode = oit->create_mode;
 622                 it->it_flags = oit->flags;
 623         } else {
 624                 it->it_op = IT_GETATTR;
 625         }
 626
 627 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 628                 /* Since there is no way to pass our intent to ll_file_open,
 629                  * just check the file is there. Actual open will be done
 630                  * in ll_file_open */
 631                 if (it->it_op & IT_OPEN)
 632                         it->it_op = IT_LOOKUP;
 633 #endif
 634
 635         return it;
 636 }
 637
 638 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 639                                    struct nameidata *nd)
 640 {
 641         struct dentry *de;
 642         ENTRY;
 643
 644         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 645                 struct lookup_intent *it;
 646
 647 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 648                 /* Did we came here from failed revalidate just to propagate
 649                  * its error? */
 650                 if (nd->flags & LOOKUP_OPEN)
 651                         if (IS_ERR(nd->intent.open.file))
 652                                 RETURN((struct dentry *)nd->intent.open.file);
 653 #endif
 654
 655                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 656                         it = ll_d2d(dentry)->lld_it;
 657                         ll_d2d(dentry)->lld_it = NULL;
 658                 } else {
 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                                         struct file *filp;
 679                                         nd->intent.open.file->private_data = it;
 680                                         filp =lookup_instantiate_filp(nd,dentry,
 681                                                                       NULL);
 682 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 683 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 684  * nd->intent.open.file for error, so we need to return it as lookup's result
 685  * instead */
 686                                         if (IS_ERR(filp)) {
 687                                                 if (de)
 688                                                         dput(de);
 689                                                 de = (struct dentry *) filp;
 690                                         }
 691 #endif
 692
 693                                 }
 694 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 695                                 /* Release open handle as we have no way to
 696                                  * pass it to ll_file_open */
 697                                 ll_release_openhandle(dentry, it);
 698 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 699                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 700                                 // XXX This can only reliably work on assumption
 701                                 // that there are NO hashed negative dentries.
 702                                 ll_d2d(dentry)->lld_it = it;
 703                                 it = NULL; /* Will be freed in ll_create_nd */
 704                                 /* We absolutely depend on ll_create_nd to be
 705                                  * called to not leak this intent and possible
 706                                  * data attached to it */
 707                         }
 708                 }
 709
 710                 if (it) {
 711                         ll_intent_release(it);
 712                         OBD_FREE(it, sizeof(*it));
 713                 }
 714         } else {
 715                 de = ll_lookup_it(parent, dentry, NULL, 0);
 716         }
 717
 718         RETURN(de);
 719 }
 720 #endif
 721
 722 /* We depend on "mode" being set with the proper file type/umask by now */
 723 static struct inode *ll_create_node(struct inode *dir, const char *name,
 724                                     int namelen, const void *data, int datalen,
 725                                     int mode, __u64 extra,
 726                                     struct lookup_intent *it)
 727 {
 728         struct inode *inode = NULL;
 729         struct ptlrpc_request *request = NULL;
 730         struct ll_sb_info *sbi = ll_i2sbi(dir);
 731         int rc;
 732         ENTRY;
 733
 734         LASSERT(it && it->d.lustre.it_disposition);
 735
 736         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 737         request = it->d.lustre.it_data;
 738         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 739         rc = ll_prep_inode(&inode, request, dir->i_sb);
 740         if (rc)
 741                 GOTO(out, inode = ERR_PTR(rc));
 742
 743         LASSERT(list_empty(&inode->i_dentry));
 744
 745         /* We asked for a lock on the directory, but were granted a
 746          * lock on the inode.  Since we finally have an inode pointer,
 747          * stuff it in the lock. */
 748         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 749                inode, inode->i_ino, inode->i_generation);
 750         md_set_lock_data(sbi->ll_md_exp,
 751                          &it->d.lustre.it_lock_handle, inode);
 752         EXIT;
 753  out:
 754         ptlrpc_req_finished(request);
 755         return inode;
 756 }
 757
 758 /*
 759  * By the time this is called, we already have created the directory cache
 760  * entry for the new file, but it is so far negative - it has no inode.
 761  *
 762  * We defer creating the OBD object(s) until open, to keep the intent and
 763  * non-intent code paths similar, and also because we do not have the MDS
 764  * inode number before calling ll_create_node() (which is needed for LOV),
 765  * so we would need to do yet another RPC to the MDS to store the LOV EA
 766  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 767  * lmm_size in datalen (the MDS still has code which will handle that).
 768  *
 769  * If the create succeeds, we fill in the inode information
 770  * with d_instantiate().
 771  */
 772 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 773                         struct lookup_intent *it)
 774 {
 775         struct inode *inode;
 776         int rc = 0;
 777         ENTRY;
 778
 779         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 780                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 781                dir->i_generation, dir, LL_IT2STR(it));
 782
 783         rc = it_open_error(DISP_OPEN_CREATE, it);
 784         if (rc)
 785                 RETURN(rc);
 786
 787         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 788                                NULL, 0, mode, 0, it);
 789         if (IS_ERR(inode)) {
 790                 RETURN(PTR_ERR(inode));
 791         }
 792
 793         d_instantiate(dentry, inode);
 794         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 795          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 796          * successful create. Hash it here. */
 797         spin_lock(&dcache_lock);
 798         if (d_unhashed(dentry))
 799                 d_rehash_cond(dentry, 0);
 800         spin_unlock(&dcache_lock);
 801         RETURN(0);
 802 }
 803
 804 static void ll_update_times(struct ptlrpc_request *request,
 805                             struct inode *inode)
 806 {
 807         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 808                                                        &RMF_MDT_BODY);
 809
 810         LASSERT(body);
 811         /* mtime is always updated with ctime, but can be set in past.
 812            As write and utime(2) may happen within 1 second, and utime's
 813            mtime has a priority over write's one, so take mtime from mds
 814            for the same ctimes. */
 815         if (body->valid & OBD_MD_FLCTIME &&
 816             body->ctime >= LTIME_S(inode->i_ctime)) {
 817                 LTIME_S(inode->i_ctime) = body->ctime;
 818
 819                 if (body->valid & OBD_MD_FLMTIME) {
 820                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 821                                "to "LPU64"\n", inode->i_ino,
 822                                LTIME_S(inode->i_mtime), body->mtime);
 823                         LTIME_S(inode->i_mtime) = body->mtime;
 824                 }
 825         }
 826 }
 827
 828 static int ll_new_node(struct inode *dir, struct qstr *name,
 829                        const char *tgt, int mode, int rdev,
 830                        struct dentry *dchild, __u32 opc)
 831 {
 832         struct ptlrpc_request *request = NULL;
 833         struct md_op_data *op_data;
 834         struct inode *inode = NULL;
 835         struct ll_sb_info *sbi = ll_i2sbi(dir);
 836         int tgt_len = 0;
 837         int err;
 838
 839         ENTRY;
 840         if (unlikely(tgt != NULL))
 841                 tgt_len = strlen(tgt) + 1;
 842
 843         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 844                                      name->len, 0, opc, NULL);
 845         if (IS_ERR(op_data))
 846                 GOTO(err_exit, err = PTR_ERR(op_data));
 847
 848         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 849                         current->fsuid, current->fsgid,
 850                         cfs_curproc_cap_pack(), rdev, &request);
 851         ll_finish_md_op_data(op_data);
 852         if (err)
 853                 GOTO(err_exit, err);
 854
 855         ll_update_times(request, dir);
 856
 857         if (dchild) {
 858                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 859                 if (err)
 860                      GOTO(err_exit, err);
 861
 862                 d_drop(dchild);
 863                 d_instantiate(dchild, inode);
 864                 EXIT;
 865         }
 866 err_exit:
 867         ptlrpc_req_finished(request);
 868
 869         return err;
 870 }
 871
 872 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 873                             unsigned rdev, struct dentry *dchild)
 874 {
 875         int err;
 876         ENTRY;
 877
 878         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 879                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 880                mode, rdev);
 881
 882         mode &= ~current->fs->umask;
 883
 884         switch (mode & S_IFMT) {
 885         case 0:
 886                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 887         case S_IFREG:
 888         case S_IFCHR:
 889         case S_IFBLK:
 890         case S_IFIFO:
 891         case S_IFSOCK:
 892                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 893                                   LUSTRE_OPC_MKNOD);
 894                 break;
 895         case S_IFDIR:
 896                 err = -EPERM;
 897                 break;
 898         default:
 899                 err = -EINVAL;
 900         }
 901         RETURN(err);
 902 }
 903
 904 #ifndef HAVE_VFS_INTENT_PATCHES
 905 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 906                         int mode, struct nameidata *nd)
 907 {
 908         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 909         int rc;
 910
 911         if (!it)
 912                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 913
 914         ll_d2d(dentry)->lld_it = NULL;
 915
 916         /* Was there an error? Propagate it! */
 917         if (it->d.lustre.it_status) {
 918                 rc = it->d.lustre.it_status;
 919                 goto out;
 920         }
 921
 922         rc = ll_create_it(dir, dentry, mode, it);
 923 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 924         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 925                 nd->intent.open.file->private_data = it;
 926                 lookup_instantiate_filp(nd, dentry, NULL);
 927         }
 928 #else
 929         ll_release_openhandle(dentry,it);
 930 #endif
 931
 932 out:
 933         ll_intent_release(it);
 934         OBD_FREE(it, sizeof(*it));
 935
 936         return rc;
 937 }
 938 #else
 939 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 940                         int mode, struct nameidata *nd)
 941 {
 942         if (!nd || !nd->intent.d.lustre.it_disposition)
 943                 /* No saved request? Just mknod the file */
 944                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 945
 946         return ll_create_it(dir, dentry, mode, &nd->intent);
 947 }
 948 #endif
 949
 950 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 951                               const char *tgt, struct dentry *dchild)
 952 {
 953         int err;
 954         ENTRY;
 955
 956         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 957                name->len, name->name, dir->i_ino, dir->i_generation,
 958                dir, 3000, tgt);
 959
 960         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 961                           0, dchild, LUSTRE_OPC_SYMLINK);
 962         RETURN(err);
 963 }
 964
 965 static int ll_link_generic(struct inode *src,  struct inode *dir,
 966                            struct qstr *name, struct dentry *dchild)
 967 {
 968         struct ll_sb_info *sbi = ll_i2sbi(dir);
 969         struct ptlrpc_request *request = NULL;
 970         struct md_op_data *op_data;
 971         int err;
 972
 973         ENTRY;
 974         CDEBUG(D_VFSTRACE,
 975                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 976                src->i_ino, src->i_generation, src, dir->i_ino,
 977                dir->i_generation, dir, name->len, name->name);
 978
 979         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 980                                      0, LUSTRE_OPC_ANY, NULL);
 981         if (IS_ERR(op_data))
 982                 RETURN(PTR_ERR(op_data));
 983
 984         err = md_link(sbi->ll_md_exp, op_data, &request);
 985         ll_finish_md_op_data(op_data);
 986         if (err)
 987                 GOTO(out, err);
 988         if (dchild)
 989                 d_drop(dchild);
 990
 991         ll_update_times(request, dir);
 992         EXIT;
 993 out:
 994         ptlrpc_req_finished(request);
 995         RETURN(err);
 996 }
 997
 998 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 999                             int mode, struct dentry *dchild)
1000
1001 {
1002         int err;
1003         ENTRY;
1004
1005         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1006                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1007
1008         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1009         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
1010
1011         RETURN(err);
1012 }
1013
1014 /* Try to find the child dentry by its name.
1015    If found, put the result fid into @fid. */
1016 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1017                              struct lu_fid *fid)
1018 {
1019         struct dentry *parent, *child;
1020
1021         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1022         child = d_lookup(parent, name);
1023         if (child) {
1024                 if (child->d_inode)
1025                         *fid = *ll_inode2fid(child->d_inode);
1026                 dput(child);
1027         }
1028 }
1029
1030 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1031                             struct dentry *dchild, struct qstr *name)
1032 {
1033         struct ptlrpc_request *request = NULL;
1034         struct md_op_data *op_data;
1035         int rc;
1036         ENTRY;
1037
1038         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1039                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1040
1041         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1042                 RETURN(-EBUSY);
1043
1044         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1045                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1046         if (IS_ERR(op_data))
1047                 RETURN(PTR_ERR(op_data));
1048
1049         ll_get_child_fid(dir, name, &op_data->op_fid3);
1050         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1051         ll_finish_md_op_data(op_data);
1052         if (rc == 0)
1053                 ll_update_times(request, dir);
1054         ptlrpc_req_finished(request);
1055         RETURN(rc);
1056 }
1057
1058 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1059 {
1060         struct mdt_body *body;
1061         struct lov_mds_md *eadata;
1062         struct lov_stripe_md *lsm = NULL;
1063         struct obd_trans_info oti = { 0 };
1064         struct obdo *oa;
1065         int rc;
1066         ENTRY;
1067
1068         /* req is swabbed so this is safe */
1069         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1070         if (!(body->valid & OBD_MD_FLEASIZE))
1071                 RETURN(0);
1072
1073         if (body->eadatasize == 0) {
1074                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1075                 GOTO(out, rc = -EPROTO);
1076         }
1077
1078         /* The MDS sent back the EA because we unlinked the last reference
1079          * to this file. Use this EA to unlink the objects on the OST.
1080          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1081          * check it is complete and sensible. */
1082         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1083                                               body->eadatasize);
1084         LASSERT(eadata != NULL);
1085
1086         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1087         if (rc < 0) {
1088                 CERROR("obd_unpackmd: %d\n", rc);
1089                 GOTO(out, rc);
1090         }
1091         LASSERT(rc >= sizeof(*lsm));
1092
1093         rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
1094         if (rc)
1095                 GOTO(out_free_memmd, rc);
1096
1097         OBDO_ALLOC(oa);
1098         if (oa == NULL)
1099                 GOTO(out_free_memmd, rc = -ENOMEM);
1100
1101         oa->o_id = lsm->lsm_object_id;
1102         oa->o_gr = lsm->lsm_object_gr;
1103         oa->o_mode = body->mode & S_IFMT;
1104         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1105
1106         if (body->valid & OBD_MD_FLCOOKIE) {
1107                 oa->o_valid |= OBD_MD_FLCOOKIE;
1108                 oti.oti_logcookies =
1109                         req_capsule_server_sized_get(&request->rq_pill,
1110                                                      &RMF_LOGCOOKIES,
1111                                                    sizeof(struct llog_cookie) *
1112                                                      lsm->lsm_stripe_count);
1113                 if (oti.oti_logcookies == NULL) {
1114                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1115                         body->valid &= ~OBD_MD_FLCOOKIE;
1116                 }
1117         }
1118
1119         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir));
1120         OBDO_FREE(oa);
1121         if (rc)
1122                 CERROR("obd destroy objid "LPX64" error %d\n",
1123                        lsm->lsm_object_id, rc);
1124  out_free_memmd:
1125         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1126  out:
1127         return rc;
1128 }
1129
1130 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1131                              struct dentry *dchild, struct qstr *name)
1132 {
1133         struct ptlrpc_request *request = NULL;
1134         struct md_op_data *op_data;
1135         int rc;
1136         ENTRY;
1137         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1138                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1139
1140         /*
1141          * XXX: unlink bind mountpoint maybe call to here,
1142          * just check it as vfs_unlink does.
1143          */
1144         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1145                 RETURN(-EBUSY);
1146
1147         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1148                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1149         if (IS_ERR(op_data))
1150                 RETURN(PTR_ERR(op_data));
1151
1152         ll_get_child_fid(dir, name, &op_data->op_fid3);
1153         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1154         ll_finish_md_op_data(op_data);
1155         if (rc)
1156                 GOTO(out, rc);
1157
1158         ll_update_times(request, dir);
1159
1160         rc = ll_objects_destroy(request, dir);
1161  out:
1162         ptlrpc_req_finished(request);
1163         RETURN(rc);
1164 }
1165
1166 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1167                              struct dentry *src_dchild, struct qstr *src_name,
1168                              struct inode *tgt, struct dentry *tgt_dparent,
1169                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1170 {
1171         struct ptlrpc_request *request = NULL;
1172         struct ll_sb_info *sbi = ll_i2sbi(src);
1173         struct md_op_data *op_data;
1174         int err;
1175         ENTRY;
1176         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1177                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1178                src->i_ino, src->i_generation, src, tgt_name->len,
1179                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1180
1181         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1182             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1183                 RETURN(-EBUSY);
1184
1185         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1186                                      LUSTRE_OPC_ANY, NULL);
1187         if (IS_ERR(op_data))
1188                 RETURN(PTR_ERR(op_data));
1189
1190         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1191         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1192         err = md_rename(sbi->ll_md_exp, op_data,
1193                         src_name->name, src_name->len,
1194                         tgt_name->name, tgt_name->len, &request);
1195         ll_finish_md_op_data(op_data);
1196         if (!err) {
1197                 ll_update_times(request, src);
1198                 ll_update_times(request, tgt);
1199                 err = ll_objects_destroy(request, src);
1200         }
1201
1202         ptlrpc_req_finished(request);
1203
1204         RETURN(err);
1205 }
1206
1207 #ifdef HAVE_VFS_INTENT_PATCHES
1208 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1209 {
1210         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1211 }
1212 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1213 {
1214         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1215                                  NULL, &srcnd->last,
1216                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1217                                  NULL, &tgtnd->last);
1218 }
1219 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1220 {
1221         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1222                                &tgtnd->last, NULL);
1223 }
1224 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1225 {
1226         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1227 }
1228 static int ll_rmdir_raw(struct nameidata *nd)
1229 {
1230         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1231                                 &nd->last);
1232 }
1233 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1234 {
1235         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1236 }
1237 static int ll_unlink_raw(struct nameidata *nd)
1238 {
1239         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1240                                  &nd->last);
1241 }
1242 #endif
1243
1244 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1245                     ll_dev_t rdev)
1246 {
1247         return ll_mknod_generic(dir, &dchild->d_name, mode,
1248                                 old_encode_dev(rdev), dchild);
1249 }
1250
1251 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1252 {
1253         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1254 }
1255 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1256 {
1257         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1258 }
1259 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1260 {
1261         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1262 }
1263 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1264                       const char *oldname)
1265 {
1266         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1267 }
1268 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1269                    struct dentry *new_dentry)
1270 {
1271         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1272                                new_dentry);
1273 }
1274 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1275                      struct inode *new_dir, struct dentry *new_dentry)
1276 {
1277         int err;
1278         err = ll_rename_generic(old_dir, NULL,
1279                                  old_dentry, &old_dentry->d_name,
1280                                  new_dir, NULL, new_dentry,
1281                                  &new_dentry->d_name);
1282         if (!err) {
1283 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1284                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1285 #endif
1286                         d_move(old_dentry, new_dentry);
1287         }
1288         return err;
1289 }
1290
1291 struct inode_operations ll_dir_inode_operations = {
1292 #ifdef HAVE_VFS_INTENT_PATCHES
1293         .link_raw           = ll_link_raw,
1294         .unlink_raw         = ll_unlink_raw,
1295         .symlink_raw        = ll_symlink_raw,
1296         .mkdir_raw          = ll_mkdir_raw,
1297         .rmdir_raw          = ll_rmdir_raw,
1298         .mknod_raw          = ll_mknod_raw,
1299         .rename_raw         = ll_rename_raw,
1300         .setattr            = ll_setattr,
1301         .setattr_raw        = ll_setattr_raw,
1302 #endif
1303         .mknod              = ll_mknod,
1304         .lookup             = ll_lookup_nd,
1305         .create             = ll_create_nd,
1306         /* We need all these non-raw things for NFSD, to not patch it. */
1307         .unlink             = ll_unlink,
1308         .mkdir              = ll_mkdir,
1309         .rmdir              = ll_rmdir,
1310         .symlink            = ll_symlink,
1311         .link               = ll_link,
1312         .rename             = ll_rename,
1313         .setattr            = ll_setattr,
1314         .getattr            = ll_getattr,
1315         .permission         = ll_inode_permission,
1316         .setxattr           = ll_setxattr,
1317         .getxattr           = ll_getxattr,
1318         .listxattr          = ll_listxattr,
1319         .removexattr        = ll_removexattr,
1320 };
1321
1322 struct inode_operations ll_special_inode_operations = {
1323 #ifdef HAVE_VFS_INTENT_PATCHES
1324         .setattr_raw    = ll_setattr_raw,
1325 #endif
1326         .setattr        = ll_setattr,
1327         .getattr        = ll_getattr,
1328         .permission     = ll_inode_permission,
1329         .setxattr       = ll_setxattr,
1330         .getxattr       = ll_getxattr,
1331         .listxattr      = ll_listxattr,
1332         .removexattr    = ll_removexattr,
1333 };