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 [sun.com URL with a
  20  * copy of GPLv2].
  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(&dcache_lock);
 145 restart:
 146         list_for_each_entry_safe(dentry, tmp_alias,
 147                                  &dir->i_dentry,d_alias) {
 148                 if (!list_empty(&dentry->d_subdirs)) {
 149                         struct dentry *child;
 150                         list_for_each_entry_safe(child, tmp_subdir,
 151                                                  &dentry->d_subdirs,
 152                                                  d_child) {
 153                                 /* XXX Print some debug here? */
 154                                 if (!child->d_inode)
 155                                 /* Negative dentry. If we were
 156                                    dropping dcache lock, go
 157                                    throught the list again */
 158                                         if (ll_drop_dentry(child))
 159                                                 goto restart;
 160                         }
 161                 }
 162         }
 163         spin_unlock(&dcache_lock);
 164 }
 165
 166
 167 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 168                        void *data, int flag)
 169 {
 170         int rc;
 171         struct lustre_handle lockh;
 172         ENTRY;
 173
 174         switch (flag) {
 175         case LDLM_CB_BLOCKING:
 176                 ldlm_lock2handle(lock, &lockh);
 177                 rc = ldlm_cli_cancel(&lockh);
 178                 if (rc < 0) {
 179                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 180                         RETURN(rc);
 181                 }
 182                 break;
 183         case LDLM_CB_CANCELING: {
 184                 struct inode *inode = ll_inode_from_lock(lock);
 185                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 186                 struct lu_fid *fid;
 187
 188                 /* Invalidate all dentries associated with this inode */
 189                 if (inode == NULL)
 190                         break;
 191
 192                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 193                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 194                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 195                         bits &= ~MDS_INODELOCK_LOOKUP;
 196                 if ((bits & MDS_INODELOCK_UPDATE) &&
 197                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 198                         bits &= ~MDS_INODELOCK_UPDATE;
 199                 if ((bits & MDS_INODELOCK_OPEN) &&
 200                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 201                         bits &= ~MDS_INODELOCK_OPEN;
 202
 203                 fid = ll_inode2fid(inode);
 204                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 205                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 206                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 207                         LDLM_ERROR(lock, "data mismatch with object "
 208                                    DFID" (%p)", PFID(fid), inode);
 209                 }
 210
 211                 if (bits & MDS_INODELOCK_OPEN) {
 212                         int flags = 0;
 213                         switch (lock->l_req_mode) {
 214                         case LCK_CW:
 215                                 flags = FMODE_WRITE;
 216                                 break;
 217                         case LCK_PR:
 218                                 flags = FMODE_EXEC;
 219                                 break;
 220                         case LCK_CR:
 221                                 flags = FMODE_READ;
 222                                 break;
 223                         default:
 224                                 CERROR("Unexpected lock mode for OPEN lock "
 225                                        "%d, inode %ld\n", lock->l_req_mode,
 226                                        inode->i_ino);
 227                         }
 228                         ll_md_real_close(inode, flags);
 229                 }
 230
 231                 if (bits & MDS_INODELOCK_UPDATE)
 232                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 233
 234                 if (S_ISDIR(inode->i_mode) &&
 235                      (bits & MDS_INODELOCK_UPDATE)) {
 236                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 237                                inode->i_ino);
 238                         truncate_inode_pages(inode->i_mapping, 0);
 239                         ll_drop_negative_dentry(inode);
 240                 }
 241
 242                 if (inode->i_sb->s_root &&
 243                     inode != inode->i_sb->s_root->d_inode &&
 244                     (bits & MDS_INODELOCK_LOOKUP))
 245                         ll_unhash_aliases(inode);
 246                 iput(inode);
 247                 break;
 248         }
 249         default:
 250                 LBUG();
 251         }
 252
 253         RETURN(0);
 254 }
 255
 256 __u32 ll_i2suppgid(struct inode *i)
 257 {
 258         if (in_group_p(i->i_gid))
 259                 return (__u32)i->i_gid;
 260         else
 261                 return (__u32)(-1);
 262 }
 263
 264 /* Pack the required supplementary groups into the supplied groups array.
 265  * If we don't need to use the groups from the target inode(s) then we
 266  * instead pack one or more groups from the user's supplementary group
 267  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 268 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 269 {
 270 #if 0
 271         int i;
 272 #endif
 273
 274         LASSERT(i1 != NULL);
 275         LASSERT(suppgids != NULL);
 276
 277         suppgids[0] = ll_i2suppgid(i1);
 278
 279         if (i2)
 280                 suppgids[1] = ll_i2suppgid(i2);
 281                 else
 282                         suppgids[1] = -1;
 283
 284 #if 0
 285         for (i = 0; i < current_ngroups; i++) {
 286                 if (suppgids[0] == -1) {
 287                         if (current_groups[i] != suppgids[1])
 288                                 suppgids[0] = current_groups[i];
 289                         continue;
 290                 }
 291                 if (suppgids[1] == -1) {
 292                         if (current_groups[i] != suppgids[0])
 293                                 suppgids[1] = current_groups[i];
 294                         continue;
 295                 }
 296                 break;
 297         }
 298 #endif
 299 }
 300
 301 static void ll_d_add(struct dentry *de, struct inode *inode)
 302 {
 303         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 304         /* d_instantiate */
 305         if (!list_empty(&de->d_alias)) {
 306                 spin_unlock(&dcache_lock);
 307                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 308                        de->d_name.len, de->d_name.name, de,
 309                        de->d_alias.next, de->d_alias.prev);
 310                 LBUG();
 311         }
 312         if (inode)
 313                 list_add(&de->d_alias, &inode->i_dentry);
 314         de->d_inode = inode;
 315
 316         /* d_rehash */
 317         if (!d_unhashed(de)) {
 318                 spin_unlock(&dcache_lock);
 319                 CERROR("dentry %.*s %p hash next %p\n",
 320                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 321                 LBUG();
 322         }
 323         d_rehash_cond(de, 0);
 324 }
 325
 326 /* Search "inode"'s alias list for a dentry that has the same name and parent
 327  * as de.  If found, return it.  If not found, return de.
 328  * Lustre can't use d_add_unique because don't unhash aliases for directory
 329  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 330  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 331  */
 332 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 333 {
 334         struct list_head *tmp;
 335         struct dentry *dentry;
 336         struct dentry *last_discon = NULL;
 337
 338         spin_lock(&dcache_lock);
 339         list_for_each(tmp, &inode->i_dentry) {
 340                 dentry = list_entry(tmp, struct dentry, d_alias);
 341
 342                 /* We are called here with 'de' already on the aliases list. */
 343                 if (unlikely(dentry == de)) {
 344                         CERROR("whoops\n");
 345                         continue;
 346                 }
 347
 348                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 349                         LASSERT(last_discon == NULL);
 350                         last_discon = dentry;
 351                         continue;
 352                 }
 353
 354                 if (dentry->d_parent != de->d_parent)
 355                         continue;
 356
 357                 if (dentry->d_name.hash != de->d_name.hash)
 358                         continue;
 359
 360                 if (dentry->d_name.len != de->d_name.len)
 361                         continue;
 362
 363                 if (memcmp(dentry->d_name.name, de->d_name.name,
 364                            de->d_name.len) != 0)
 365                         continue;
 366
 367                 dget_locked(dentry);
 368                 lock_dentry(dentry);
 369                 __d_drop(dentry);
 370 #ifdef DCACHE_LUSTRE_INVALID
 371                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 372 #endif
 373                 unlock_dentry(dentry);
 374                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 375                 spin_unlock(&dcache_lock);
 376                 iput(inode);
 377                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 378                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 379                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 380                 return dentry;
 381         }
 382
 383         if (last_discon) {
 384                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 385                         "refc %d\n", last_discon, last_discon->d_inode,
 386                         atomic_read(&last_discon->d_count));
 387                 dget_locked(last_discon);
 388                 spin_unlock(&dcache_lock);
 389                 d_rehash(de);
 390                 d_move(last_discon, de);
 391                 iput(inode);
 392                 return last_discon;
 393         }
 394
 395         ll_d_add(de, inode);
 396
 397         spin_unlock(&dcache_lock);
 398
 399         return de;
 400 }
 401
 402 static inline void ll_dop_init(struct dentry *de, int *set)
 403 {
 404         lock_dentry(de);
 405         if (likely(de->d_op != &ll_d_ops)) {
 406                 de->d_op = &ll_init_d_ops;
 407                 *set = 1;
 408         }
 409         unlock_dentry(de);
 410 }
 411
 412 static inline void ll_dop_fini(struct dentry *de, int succ)
 413 {
 414         lock_dentry(de);
 415         if (likely(de->d_op == &ll_init_d_ops)) {
 416                 if (succ)
 417                         de->d_op = &ll_d_ops;
 418                 else
 419                         de->d_op = &ll_fini_d_ops;
 420                 unlock_dentry(de);
 421                 smp_wmb();
 422                 ll_d_wakeup(de);
 423         } else {
 424                 if (succ)
 425                         de->d_op = &ll_d_ops;
 426                 unlock_dentry(de);
 427         }
 428 }
 429
 430 int ll_lookup_it_finish(struct ptlrpc_request *request,
 431                      struct lookup_intent *it, void *data)
 432 {
 433         struct it_cb_data *icbd = data;
 434         struct dentry **de = icbd->icbd_childp;
 435         struct inode *parent = icbd->icbd_parent;
 436         struct ll_sb_info *sbi = ll_i2sbi(parent);
 437         struct inode *inode = NULL;
 438         int set = 0, rc;
 439         ENTRY;
 440
 441         ll_dop_init(*de, &set);
 442
 443         /* NB 1 request reference will be taken away by ll_intent_lock()
 444          * when I return */
 445         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 446                 struct dentry *save = *de;
 447
 448                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 449                 if (rc) {
 450                         if (set)
 451                                 ll_dop_fini(*de, 0);
 452                         RETURN(rc);
 453                 }
 454
 455                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 456                        inode, inode->i_ino, inode->i_generation);
 457                 md_set_lock_data(sbi->ll_md_exp,
 458                                  &it->d.lustre.it_lock_handle, inode);
 459
 460                 /* We used to query real size from OSTs here, but actually
 461                    this is not needed. For stat() calls size would be updated
 462                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 463                    2.4 and
 464                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 465                    Everybody else who needs correct file size would call
 466                    ll_glimpse_size or some equivalent themselves anyway.
 467                    Also see bug 7198. */
 468
 469                 *de = ll_find_alias(inode, *de);
 470                 if (set && *de != save)
 471                         ll_dop_fini(save, 0);
 472         } else {
 473                 /* Check that parent has UPDATE lock. If there is none, we
 474                    cannot afford to hash this dentry (done by ll_d_add) as it
 475                    might get picked up later when UPDATE lock will appear */
 476                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 477                         spin_lock(&dcache_lock);
 478                         ll_d_add(*de, inode);
 479                         spin_unlock(&dcache_lock);
 480                 } else {
 481                         (*de)->d_inode = NULL;
 482                         /* We do not want to hash the dentry if don`t have a
 483                          * lock, but if this dentry is later used in d_move,
 484                          * we'd hit uninitialised list head d_hash, so we just
 485                          * do this to init d_hash field but leave dentry
 486                          * unhashed. (bug 10796). */
 487                         d_rehash(*de);
 488                         d_drop(*de);
 489                 }
 490         }
 491
 492         ll_set_dd(*de);
 493
 494         ll_dop_fini(*de, 1);
 495
 496         RETURN(0);
 497 }
 498
 499 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 500                                    struct lookup_intent *it, int lookup_flags)
 501 {
 502         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 503         struct dentry *save = dentry, *retval;
 504         struct ptlrpc_request *req = NULL;
 505         struct md_op_data *op_data;
 506         struct it_cb_data icbd;
 507         __u32 opc;
 508         int rc;
 509         ENTRY;
 510
 511         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 512                 RETURN(ERR_PTR(-ENAMETOOLONG));
 513
 514         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 515                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 516                parent->i_generation, parent, LL_IT2STR(it));
 517
 518         if (d_mountpoint(dentry))
 519                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 520
 521         ll_frob_intent(&it, &lookup_it);
 522
 523         /* As do_lookup is called before follow_mount, root dentry may be left
 524          * not valid, revalidate it here. */
 525         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 526             (it->it_op & (IT_OPEN | IT_CREAT))) {
 527                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 528                 if (rc)
 529                         RETURN(ERR_PTR(rc));
 530         }
 531
 532         if (it->it_op == IT_GETATTR) {
 533                 rc = ll_statahead_enter(parent, &dentry, 1);
 534                 if (rc >= 0) {
 535                         ll_statahead_exit(dentry, rc);
 536                         if (rc == 1)
 537                                 RETURN(retval = dentry);
 538                 }
 539         }
 540
 541         icbd.icbd_childp = &dentry;
 542         icbd.icbd_parent = parent;
 543
 544         if (it->it_op & IT_CREAT ||
 545             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 546                 opc = LUSTRE_OPC_CREATE;
 547         else
 548                 opc = LUSTRE_OPC_ANY;
 549
 550         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 551                                      dentry->d_name.len, lookup_flags, opc,
 552                                      NULL);
 553         if (IS_ERR(op_data))
 554                 RETURN((void *)op_data);
 555
 556         it->it_create_mode &= ~current->fs->umask;
 557
 558         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 559                             lookup_flags, &req, ll_md_blocking_ast, 0);
 560         ll_finish_md_op_data(op_data);
 561         if (rc < 0)
 562                 GOTO(out, retval = ERR_PTR(rc));
 563
 564         rc = ll_lookup_it_finish(req, it, &icbd);
 565         if (rc != 0) {
 566                 ll_intent_release(it);
 567                 GOTO(out, retval = ERR_PTR(rc));
 568         }
 569
 570         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 571             !S_ISREG(dentry->d_inode->i_mode) &&
 572             !S_ISDIR(dentry->d_inode->i_mode)) {
 573                 ll_release_openhandle(dentry, it);
 574         }
 575         ll_lookup_finish_locks(it, dentry);
 576
 577         if (dentry == save)
 578                 GOTO(out, retval = NULL);
 579         else
 580                 GOTO(out, retval = dentry);
 581  out:
 582         if (req)
 583                 ptlrpc_req_finished(req);
 584         return retval;
 585 }
 586
 587 #ifdef HAVE_VFS_INTENT_PATCHES
 588 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 589                                    struct nameidata *nd)
 590 {
 591         struct dentry *de;
 592         ENTRY;
 593
 594         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 595                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 596         else
 597                 de = ll_lookup_it(parent, dentry, NULL, 0);
 598
 599         RETURN(de);
 600 }
 601 #else
 602 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 603                                         int lookup_flags)
 604 {
 605         struct lookup_intent *it;
 606
 607         OBD_ALLOC(it, sizeof(*it));
 608         if (!it)
 609                 return ERR_PTR(-ENOMEM);
 610
 611         if (lookup_flags & LOOKUP_OPEN) {
 612                 it->it_op = IT_OPEN;
 613                 if (lookup_flags & LOOKUP_CREATE)
 614                         it->it_op |= IT_CREAT;
 615                 it->it_create_mode = oit->create_mode;
 616                 it->it_flags = oit->flags;
 617         } else {
 618                 it->it_op = IT_GETATTR;
 619         }
 620
 621 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 622                 /* Since there is no way to pass our intent to ll_file_open,
 623                  * just check the file is there. Actual open will be done
 624                  * in ll_file_open */
 625                 if (it->it_op & IT_OPEN)
 626                         it->it_op = IT_LOOKUP;
 627 #endif
 628
 629         return it;
 630 }
 631
 632 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 633                                    struct nameidata *nd)
 634 {
 635         struct dentry *de;
 636         ENTRY;
 637
 638         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 639                 struct lookup_intent *it;
 640
 641 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 642                 /* Did we came here from failed revalidate just to propagate
 643                  * its error? */
 644                 if (nd->flags & LOOKUP_OPEN)
 645                         if (IS_ERR(nd->intent.open.file))
 646                                 RETURN((struct dentry *)nd->intent.open.file);
 647 #endif
 648
 649                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 650                         it = ll_d2d(dentry)->lld_it;
 651                         ll_d2d(dentry)->lld_it = NULL;
 652                 } else {
 653                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 654                         if (IS_ERR(it))
 655                                 RETURN((struct dentry *)it);
 656                 }
 657
 658                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 659                 if (de)
 660                         dentry = de;
 661                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 662                         if (dentry->d_inode &&
 663                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 664 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 665                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 666                                         // We cannot call open here as it would
 667                                         // deadlock.
 668                                         ptlrpc_req_finished(
 669                                                        (struct ptlrpc_request *)
 670                                                           it->d.lustre.it_data);
 671                                 } else {
 672                                         struct file *filp;
 673                                         nd->intent.open.file->private_data = it;
 674                                         filp =lookup_instantiate_filp(nd,dentry,
 675                                                                       NULL);
 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                                         if (IS_ERR(filp)) {
 681                                                 if (de)
 682                                                         dput(de);
 683                                                 de = (struct dentry *) filp;
 684                                         }
 685 #endif
 686
 687                                 }
 688 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 689                                 /* Release open handle as we have no way to
 690                                  * pass it to ll_file_open */
 691                                 ll_release_openhandle(dentry, it);
 692 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 693                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 694                                 // XXX This can only reliably work on assumption
 695                                 // that there are NO hashed negative dentries.
 696                                 ll_d2d(dentry)->lld_it = it;
 697                                 it = NULL; /* Will be freed in ll_create_nd */
 698                                 /* We absolutely depend on ll_create_nd to be
 699                                  * called to not leak this intent and possible
 700                                  * data attached to it */
 701                         }
 702                 }
 703
 704                 if (it) {
 705                         ll_intent_release(it);
 706                         OBD_FREE(it, sizeof(*it));
 707                 }
 708         } else {
 709                 de = ll_lookup_it(parent, dentry, NULL, 0);
 710         }
 711
 712         RETURN(de);
 713 }
 714 #endif
 715
 716 /* We depend on "mode" being set with the proper file type/umask by now */
 717 static struct inode *ll_create_node(struct inode *dir, const char *name,
 718                                     int namelen, const void *data, int datalen,
 719                                     int mode, __u64 extra,
 720                                     struct lookup_intent *it)
 721 {
 722         struct inode *inode = NULL;
 723         struct ptlrpc_request *request = NULL;
 724         struct ll_sb_info *sbi = ll_i2sbi(dir);
 725         int rc;
 726         ENTRY;
 727
 728         LASSERT(it && it->d.lustre.it_disposition);
 729
 730         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 731         request = it->d.lustre.it_data;
 732         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 733         rc = ll_prep_inode(&inode, request, dir->i_sb);
 734         if (rc)
 735                 GOTO(out, inode = ERR_PTR(rc));
 736
 737         LASSERT(list_empty(&inode->i_dentry));
 738
 739         /* We asked for a lock on the directory, but were granted a
 740          * lock on the inode.  Since we finally have an inode pointer,
 741          * stuff it in the lock. */
 742         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 743                inode, inode->i_ino, inode->i_generation);
 744         md_set_lock_data(sbi->ll_md_exp,
 745                          &it->d.lustre.it_lock_handle, inode);
 746         EXIT;
 747  out:
 748         ptlrpc_req_finished(request);
 749         return inode;
 750 }
 751
 752 /*
 753  * By the time this is called, we already have created the directory cache
 754  * entry for the new file, but it is so far negative - it has no inode.
 755  *
 756  * We defer creating the OBD object(s) until open, to keep the intent and
 757  * non-intent code paths similar, and also because we do not have the MDS
 758  * inode number before calling ll_create_node() (which is needed for LOV),
 759  * so we would need to do yet another RPC to the MDS to store the LOV EA
 760  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 761  * lmm_size in datalen (the MDS still has code which will handle that).
 762  *
 763  * If the create succeeds, we fill in the inode information
 764  * with d_instantiate().
 765  */
 766 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 767                         struct lookup_intent *it)
 768 {
 769         struct inode *inode;
 770         int rc = 0;
 771         ENTRY;
 772
 773         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 774                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 775                dir->i_generation, dir, LL_IT2STR(it));
 776
 777         rc = it_open_error(DISP_OPEN_CREATE, it);
 778         if (rc)
 779                 RETURN(rc);
 780
 781         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 782                                NULL, 0, mode, 0, it);
 783         if (IS_ERR(inode)) {
 784                 RETURN(PTR_ERR(inode));
 785         }
 786
 787         d_instantiate(dentry, inode);
 788         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 789          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 790          * successful create. Hash it here. */
 791         spin_lock(&dcache_lock);
 792         if (d_unhashed(dentry))
 793                 d_rehash_cond(dentry, 0);
 794         spin_unlock(&dcache_lock);
 795         RETURN(0);
 796 }
 797
 798 static void ll_update_times(struct ptlrpc_request *request,
 799                             struct inode *inode)
 800 {
 801         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 802                                                        &RMF_MDT_BODY);
 803
 804         LASSERT(body);
 805         /* mtime is always updated with ctime, but can be set in past.
 806            As write and utime(2) may happen within 1 second, and utime's
 807            mtime has a priority over write's one, so take mtime from mds
 808            for the same ctimes. */
 809         if (body->valid & OBD_MD_FLCTIME &&
 810             body->ctime >= LTIME_S(inode->i_ctime)) {
 811                 LTIME_S(inode->i_ctime) = body->ctime;
 812
 813                 if (body->valid & OBD_MD_FLMTIME) {
 814                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 815                                "to "LPU64"\n", inode->i_ino,
 816                                LTIME_S(inode->i_mtime), body->mtime);
 817                         LTIME_S(inode->i_mtime) = body->mtime;
 818                 }
 819         }
 820 }
 821
 822 static int ll_new_node(struct inode *dir, struct qstr *name,
 823                        const char *tgt, int mode, int rdev,
 824                        struct dentry *dchild, __u32 opc)
 825 {
 826         struct ptlrpc_request *request = NULL;
 827         struct md_op_data *op_data;
 828         struct inode *inode = NULL;
 829         struct ll_sb_info *sbi = ll_i2sbi(dir);
 830         int tgt_len = 0;
 831         int err;
 832
 833         ENTRY;
 834         if (unlikely(tgt != NULL))
 835                 tgt_len = strlen(tgt) + 1;
 836
 837         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 838                                      name->len, 0, opc, NULL);
 839         if (IS_ERR(op_data))
 840                 GOTO(err_exit, err = PTR_ERR(op_data));
 841
 842         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 843                         current->fsuid, current->fsgid,
 844                         current->cap_effective, rdev, &request);
 845         ll_finish_md_op_data(op_data);
 846         if (err)
 847                 GOTO(err_exit, err);
 848
 849         ll_update_times(request, dir);
 850
 851         if (dchild) {
 852                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 853                 if (err)
 854                      GOTO(err_exit, err);
 855
 856                 d_drop(dchild);
 857                 d_instantiate(dchild, inode);
 858                 EXIT;
 859         }
 860 err_exit:
 861         ptlrpc_req_finished(request);
 862
 863         return err;
 864 }
 865
 866 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 867                             unsigned rdev, struct dentry *dchild)
 868 {
 869         int err;
 870         ENTRY;
 871
 872         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 873                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 874                mode, rdev);
 875
 876         mode &= ~current->fs->umask;
 877
 878         switch (mode & S_IFMT) {
 879         case 0:
 880                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 881         case S_IFREG:
 882         case S_IFCHR:
 883         case S_IFBLK:
 884         case S_IFIFO:
 885         case S_IFSOCK:
 886                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 887                                   LUSTRE_OPC_MKNOD);
 888                 break;
 889         case S_IFDIR:
 890                 err = -EPERM;
 891                 break;
 892         default:
 893                 err = -EINVAL;
 894         }
 895         RETURN(err);
 896 }
 897
 898 #ifndef HAVE_VFS_INTENT_PATCHES
 899 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 900                         int mode, struct nameidata *nd)
 901 {
 902         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 903         int rc;
 904
 905         if (!it)
 906                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 907
 908         ll_d2d(dentry)->lld_it = NULL;
 909
 910         /* Was there an error? Propagate it! */
 911         if (it->d.lustre.it_status) {
 912                 rc = it->d.lustre.it_status;
 913                 goto out;
 914         }
 915
 916         rc = ll_create_it(dir, dentry, mode, it);
 917 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 918         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 919                 nd->intent.open.file->private_data = it;
 920                 lookup_instantiate_filp(nd, dentry, NULL);
 921         }
 922 #else
 923         ll_release_openhandle(dentry,it);
 924 #endif
 925
 926 out:
 927         ll_intent_release(it);
 928         OBD_FREE(it, sizeof(*it));
 929
 930         return rc;
 931 }
 932 #else
 933 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 934                         int mode, struct nameidata *nd)
 935 {
 936         if (!nd || !nd->intent.d.lustre.it_disposition)
 937                 /* No saved request? Just mknod the file */
 938                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 939
 940         return ll_create_it(dir, dentry, mode, &nd->intent);
 941 }
 942 #endif
 943
 944 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 945                               const char *tgt, struct dentry *dchild)
 946 {
 947         int err;
 948         ENTRY;
 949
 950         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 951                name->len, name->name, dir->i_ino, dir->i_generation,
 952                dir, 3000, tgt);
 953
 954         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 955                           0, dchild, LUSTRE_OPC_SYMLINK);
 956         RETURN(err);
 957 }
 958
 959 static int ll_link_generic(struct inode *src,  struct inode *dir,
 960                            struct qstr *name, struct dentry *dchild)
 961 {
 962         struct ll_sb_info *sbi = ll_i2sbi(dir);
 963         struct ptlrpc_request *request = NULL;
 964         struct md_op_data *op_data;
 965         int err;
 966
 967         ENTRY;
 968         CDEBUG(D_VFSTRACE,
 969                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 970                src->i_ino, src->i_generation, src, dir->i_ino,
 971                dir->i_generation, dir, name->len, name->name);
 972
 973         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 974                                      0, LUSTRE_OPC_ANY, NULL);
 975         if (IS_ERR(op_data))
 976                 RETURN(PTR_ERR(op_data));
 977
 978         err = md_link(sbi->ll_md_exp, op_data, &request);
 979         ll_finish_md_op_data(op_data);
 980         if (err)
 981                 GOTO(out, err);
 982         if (dchild)
 983                 d_drop(dchild);
 984
 985         ll_update_times(request, dir);
 986         EXIT;
 987 out:
 988         ptlrpc_req_finished(request);
 989         RETURN(err);
 990 }
 991
 992 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 993                             int mode, struct dentry *dchild)
 994
 995 {
 996         int err;
 997         ENTRY;
 998
 999         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1000                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1001
1002         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1003         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
1004
1005         RETURN(err);
1006 }
1007
1008 /* Try to find the child dentry by its name.
1009    If found, put the result fid into @fid. */
1010 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1011                              struct lu_fid *fid)
1012 {
1013         struct dentry *parent, *child;
1014
1015         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1016         child = d_lookup(parent, name);
1017         if (child) {
1018                 if (child->d_inode)
1019                         *fid = *ll_inode2fid(child->d_inode);
1020                 dput(child);
1021         }
1022 }
1023
1024 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1025                             struct dentry *dchild, struct qstr *name)
1026 {
1027         struct ptlrpc_request *request = NULL;
1028         struct md_op_data *op_data;
1029         int rc;
1030         ENTRY;
1031
1032         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1033                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1034
1035         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1036                 RETURN(-EBUSY);
1037
1038         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1039                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1040         if (IS_ERR(op_data))
1041                 RETURN(PTR_ERR(op_data));
1042
1043         ll_get_child_fid(dir, name, &op_data->op_fid3);
1044         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1045         ll_finish_md_op_data(op_data);
1046         if (rc == 0)
1047                 ll_update_times(request, dir);
1048         ptlrpc_req_finished(request);
1049         RETURN(rc);
1050 }
1051
1052 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1053 {
1054         struct mdt_body *body;
1055         struct lov_mds_md *eadata;
1056         struct lov_stripe_md *lsm = NULL;
1057         struct obd_trans_info oti = { 0 };
1058         struct obdo *oa;
1059         int rc;
1060         ENTRY;
1061
1062         /* req is swabbed so this is safe */
1063         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1064         if (!(body->valid & OBD_MD_FLEASIZE))
1065                 RETURN(0);
1066
1067         if (body->eadatasize == 0) {
1068                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1069                 GOTO(out, rc = -EPROTO);
1070         }
1071
1072         /* The MDS sent back the EA because we unlinked the last reference
1073          * to this file. Use this EA to unlink the objects on the OST.
1074          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1075          * check it is complete and sensible. */
1076         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1077                                               body->eadatasize);
1078         LASSERT(eadata != NULL);
1079
1080         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1081         if (rc < 0) {
1082                 CERROR("obd_unpackmd: %d\n", rc);
1083                 GOTO(out, rc);
1084         }
1085         LASSERT(rc >= sizeof(*lsm));
1086
1087         rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
1088         if (rc)
1089                 GOTO(out_free_memmd, rc);
1090
1091         OBDO_ALLOC(oa);
1092         if (oa == NULL)
1093                 GOTO(out_free_memmd, rc = -ENOMEM);
1094
1095         oa->o_id = lsm->lsm_object_id;
1096         oa->o_gr = lsm->lsm_object_gr;
1097         oa->o_mode = body->mode & S_IFMT;
1098         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1099
1100         if (body->valid & OBD_MD_FLCOOKIE) {
1101                 oa->o_valid |= OBD_MD_FLCOOKIE;
1102                 oti.oti_logcookies =
1103                         req_capsule_server_sized_get(&request->rq_pill,
1104                                                      &RMF_LOGCOOKIES,
1105                                                    sizeof(struct llog_cookie) *
1106                                                      lsm->lsm_stripe_count);
1107                 if (oti.oti_logcookies == NULL) {
1108                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1109                         body->valid &= ~OBD_MD_FLCOOKIE;
1110                 }
1111         }
1112
1113         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir));
1114         OBDO_FREE(oa);
1115         if (rc)
1116                 CERROR("obd destroy objid "LPX64" error %d\n",
1117                        lsm->lsm_object_id, rc);
1118  out_free_memmd:
1119         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1120  out:
1121         return rc;
1122 }
1123
1124 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1125                              struct dentry *dchild, struct qstr *name)
1126 {
1127         struct ptlrpc_request *request = NULL;
1128         struct md_op_data *op_data;
1129         int rc;
1130         ENTRY;
1131         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1132                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1133
1134         /*
1135          * XXX: unlink bind mountpoint maybe call to here,
1136          * just check it as vfs_unlink does.
1137          */
1138         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1139                 RETURN(-EBUSY);
1140
1141         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1142                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1143         if (IS_ERR(op_data))
1144                 RETURN(PTR_ERR(op_data));
1145
1146         ll_get_child_fid(dir, name, &op_data->op_fid3);
1147         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1148         ll_finish_md_op_data(op_data);
1149         if (rc)
1150                 GOTO(out, rc);
1151
1152         ll_update_times(request, dir);
1153
1154         rc = ll_objects_destroy(request, dir);
1155  out:
1156         ptlrpc_req_finished(request);
1157         RETURN(rc);
1158 }
1159
1160 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1161                              struct dentry *src_dchild, struct qstr *src_name,
1162                              struct inode *tgt, struct dentry *tgt_dparent,
1163                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1164 {
1165         struct ptlrpc_request *request = NULL;
1166         struct ll_sb_info *sbi = ll_i2sbi(src);
1167         struct md_op_data *op_data;
1168         int err;
1169         ENTRY;
1170         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1171                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1172                src->i_ino, src->i_generation, src, tgt_name->len,
1173                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1174
1175         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1176             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1177                 RETURN(-EBUSY);
1178
1179         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1180                                      LUSTRE_OPC_ANY, NULL);
1181         if (IS_ERR(op_data))
1182                 RETURN(PTR_ERR(op_data));
1183
1184         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1185         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1186         err = md_rename(sbi->ll_md_exp, op_data,
1187                         src_name->name, src_name->len,
1188                         tgt_name->name, tgt_name->len, &request);
1189         ll_finish_md_op_data(op_data);
1190         if (!err) {
1191                 ll_update_times(request, src);
1192                 ll_update_times(request, tgt);
1193                 err = ll_objects_destroy(request, src);
1194         }
1195
1196         ptlrpc_req_finished(request);
1197
1198         RETURN(err);
1199 }
1200
1201 #ifdef HAVE_VFS_INTENT_PATCHES
1202 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1203 {
1204         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1205 }
1206 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1207 {
1208         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1209                                  NULL, &srcnd->last,
1210                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1211                                  NULL, &tgtnd->last);
1212 }
1213 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1214 {
1215         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1216                                &tgtnd->last, NULL);
1217 }
1218 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1219 {
1220         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1221 }
1222 static int ll_rmdir_raw(struct nameidata *nd)
1223 {
1224         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1225                                 &nd->last);
1226 }
1227 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1228 {
1229         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1230 }
1231 static int ll_unlink_raw(struct nameidata *nd)
1232 {
1233         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1234                                  &nd->last);
1235 }
1236 #endif
1237
1238 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1239                     ll_dev_t rdev)
1240 {
1241         return ll_mknod_generic(dir, &dchild->d_name, mode,
1242                                 old_encode_dev(rdev), dchild);
1243 }
1244
1245 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1246 {
1247         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1248 }
1249 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1250 {
1251         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1252 }
1253 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1254 {
1255         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1256 }
1257 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1258                       const char *oldname)
1259 {
1260         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1261 }
1262 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1263                    struct dentry *new_dentry)
1264 {
1265         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1266                                new_dentry);
1267 }
1268 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1269                      struct inode *new_dir, struct dentry *new_dentry)
1270 {
1271         int err;
1272         err = ll_rename_generic(old_dir, NULL,
1273                                  old_dentry, &old_dentry->d_name,
1274                                  new_dir, NULL, new_dentry,
1275                                  &new_dentry->d_name);
1276         if (!err) {
1277 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1278                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1279 #endif
1280                         d_move(old_dentry, new_dentry);
1281         }
1282         return err;
1283 }
1284
1285 struct inode_operations ll_dir_inode_operations = {
1286 #ifdef HAVE_VFS_INTENT_PATCHES
1287         .link_raw           = ll_link_raw,
1288         .unlink_raw         = ll_unlink_raw,
1289         .symlink_raw        = ll_symlink_raw,
1290         .mkdir_raw          = ll_mkdir_raw,
1291         .rmdir_raw          = ll_rmdir_raw,
1292         .mknod_raw          = ll_mknod_raw,
1293         .rename_raw         = ll_rename_raw,
1294         .setattr            = ll_setattr,
1295         .setattr_raw        = ll_setattr_raw,
1296 #endif
1297         .mknod              = ll_mknod,
1298         .lookup             = ll_lookup_nd,
1299         .create             = ll_create_nd,
1300         /* We need all these non-raw things for NFSD, to not patch it. */
1301         .unlink             = ll_unlink,
1302         .mkdir              = ll_mkdir,
1303         .rmdir              = ll_rmdir,
1304         .symlink            = ll_symlink,
1305         .link               = ll_link,
1306         .rename             = ll_rename,
1307         .setattr            = ll_setattr,
1308         .getattr            = ll_getattr,
1309         .permission         = ll_inode_permission,
1310         .setxattr           = ll_setxattr,
1311         .getxattr           = ll_getxattr,
1312         .listxattr          = ll_listxattr,
1313         .removexattr        = ll_removexattr,
1314 };
1315
1316 struct inode_operations ll_special_inode_operations = {
1317 #ifdef HAVE_VFS_INTENT_PATCHES
1318         .setattr_raw    = ll_setattr_raw,
1319 #endif
1320         .setattr        = ll_setattr,
1321         .getattr        = ll_getattr,
1322         .permission     = ll_inode_permission,
1323         .setxattr       = ll_setxattr,
1324         .getxattr       = ll_getxattr,
1325         .listxattr      = ll_listxattr,
1326         .removexattr    = ll_removexattr,
1327 };