lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/fs.h>
  23 #include <linux/sched.h>
  24 #include <linux/mm.h>
  25 #include <linux/smp_lock.h>
  26 #include <linux/quotaops.h>
  27 #include <linux/highmem.h>
  28 #include <linux/pagemap.h>
  29
  30 #define DEBUG_SUBSYSTEM S_LLITE
  31
  32 #include <obd_support.h>
  33 #include <lustre_lite.h>
  34 #include <lustre_dlm.h>
  35 #include <linux/lustre_version.h>
  36 #include "llite_internal.h"
  37
  38 /* methods */
  39
  40 /* called from iget{4,5_locked}->find_inode() under inode_lock spinlock */
  41 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
  42 static int ll_test_inode(struct inode *inode, unsigned long ino, void *opaque)
  43 #else
  44 static int ll_test_inode(struct inode *inode, void *opaque)
  45 #endif
  46 {
  47         static int last_ino, last_gen, last_count;
  48         struct lustre_md *md = opaque;
  49
  50         if (!(md->body->valid & (OBD_MD_FLGENER | OBD_MD_FLID))) {
  51                 CERROR("MDS body missing inum or generation\n");
  52                 return 0;
  53         }
  54
  55         if (last_ino == md->body->ino && last_gen == md->body->generation &&
  56             last_count < 500) {
  57                 last_count++;
  58         } else {
  59                 if (last_count > 1)
  60                         CDEBUG(D_VFSTRACE, "compared %u/%u %u times\n",
  61                                last_ino, last_gen, last_count);
  62                 last_count = 0;
  63                 last_ino = md->body->ino;
  64                 last_gen = md->body->generation;
  65                 CDEBUG(D_VFSTRACE,
  66                        "comparing inode %p ino %lu/%u to body "LPU64"/%u\n",
  67                        inode, inode->i_ino, inode->i_generation,
  68                        md->body->ino, md->body->generation);
  69         }
  70
  71 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
  72         if (inode->i_ino != md->body->ino)
  73                 return 0;
  74 #endif
  75         if (inode->i_generation != md->body->generation) {
  76 #ifdef HAVE_EXPORT___IGET
  77                 if (inode->i_state & (I_FREEING | I_CLEAR))
  78                         return 0;
  79                 if (inode->i_nlink == 0)
  80                         return 0;
  81
  82                 /* add "duplicate" inode into deathrow for destroy */
  83                 spin_lock(&ll_i2sbi(inode)->ll_deathrow_lock);
  84                 if (list_empty(&ll_i2info(inode)->lli_dead_list)) {
  85                         __iget(inode);
  86                         list_add(&ll_i2info(inode)->lli_dead_list,
  87                                  &ll_i2sbi(inode)->ll_deathrow);
  88                 }
  89                 spin_unlock(&ll_i2sbi(inode)->ll_deathrow_lock);
  90 #endif
  91
  92                 return 0;
  93         }
  94
  95         /* Apply the attributes in 'opaque' to this inode */
  96         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
  97                 ll_update_inode(inode, md);
  98         return 1;
  99 }
 100
 101 extern struct dentry_operations ll_d_ops;
 102
 103 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
 104 {
 105         ENTRY;
 106
 107         ldlm_lock_decref(lockh, mode);
 108
 109         RETURN(0);
 110 }
 111
 112 /* Get an inode by inode number (already instantiated by the intent lookup).
 113  * Returns inode or NULL
 114  */
 115 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 116 int ll_set_inode(struct inode *inode, void *opaque)
 117 {
 118         ll_read_inode2(inode, opaque);
 119         return 0;
 120 }
 121
 122 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 123                       struct lustre_md *md)
 124 {
 125         struct inode *inode;
 126
 127         LASSERT(hash != 0);
 128         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 129
 130         if (inode) {
 131                 if (inode->i_state & I_NEW)
 132                         unlock_new_inode(inode);
 133                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
 134                        inode->i_generation, inode);
 135         }
 136
 137         return inode;
 138 }
 139 #else
 140 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 141                       struct lustre_md *md)
 142 {
 143         struct inode *inode;
 144         LASSERT(hash != 0);
 145         inode = iget4(sb, hash, ll_test_inode, md);
 146         if (inode)
 147                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
 148                        inode->i_generation, inode);
 149         return inode;
 150 }
 151 #endif
 152
 153 static void ll_drop_negative_dentry(struct inode *dir)
 154 {
 155         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 156
 157         spin_lock(&dcache_lock);
 158 restart:
 159         list_for_each_entry_safe(dentry, tmp_alias,
 160                                  &dir->i_dentry,d_alias) {
 161                 if (!list_empty(&dentry->d_subdirs)) {
 162                         struct dentry *child;
 163                         list_for_each_entry_safe(child, tmp_subdir,
 164                                                  &dentry->d_subdirs,
 165                                                  d_child) {
 166                                 /* XXX Print some debug here? */
 167                                 if (!child->d_inode)
 168                                 /* Negative dentry. If we were
 169                                    dropping dcache lock, go
 170                                    throught the list again */
 171                                         if (ll_drop_dentry(child))
 172                                                 goto restart;
 173                         }
 174                 }
 175         }
 176         spin_unlock(&dcache_lock);
 177 }
 178
 179 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 180                         void *data, int flag)
 181 {
 182         int rc;
 183         struct lustre_handle lockh;
 184         ENTRY;
 185
 186         switch (flag) {
 187         case LDLM_CB_BLOCKING:
 188                 ldlm_lock2handle(lock, &lockh);
 189                 rc = ldlm_cli_cancel(&lockh);
 190                 if (rc < 0) {
 191                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 192                         RETURN(rc);
 193                 }
 194                 break;
 195         case LDLM_CB_CANCELING: {
 196                 struct inode *inode = ll_inode_from_lock(lock);
 197                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 198
 199                 /* Invalidate all dentries associated with this inode */
 200                 if (inode == NULL)
 201                         break;
 202
 203                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 204                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 205                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 206                         bits &= ~MDS_INODELOCK_LOOKUP;
 207                 if ((bits & MDS_INODELOCK_UPDATE) &&
 208                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 209                         bits &= ~MDS_INODELOCK_UPDATE;
 210                 if ((bits & MDS_INODELOCK_OPEN) &&
 211                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 212                         bits &= ~MDS_INODELOCK_OPEN;
 213
 214                 if (lock->l_resource->lr_name.name[0] != inode->i_ino ||
 215                     lock->l_resource->lr_name.name[1] != inode->i_generation) {
 216                         LDLM_ERROR(lock, "data mismatch with ino %lu/%u (%p)",
 217                                    inode->i_ino, inode->i_generation, inode);
 218                 }
 219
 220                 if (bits & MDS_INODELOCK_OPEN) {
 221                         int flags = 0;
 222                         switch (lock->l_req_mode) {
 223                         case LCK_CW:
 224                                 flags = FMODE_WRITE;
 225                                 break;
 226                         case LCK_PR:
 227                                 flags = FMODE_EXEC;
 228                                 if (!FMODE_EXEC)
 229                                         CERROR("open PR lock without FMODE_EXEC\n");
 230                                 break;
 231                         case LCK_CR:
 232                                 flags = FMODE_READ;
 233                                 break;
 234                         default:
 235                                 CERROR("Unexpected lock mode for OPEN lock "
 236                                        "%d, inode %ld\n", lock->l_req_mode,
 237                                        inode->i_ino);
 238                         }
 239                         ll_mdc_real_close(inode, flags);
 240                 }
 241
 242                 if (bits & MDS_INODELOCK_UPDATE)
 243                         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
 244                                   &(ll_i2info(inode)->lli_flags));
 245
 246                 if (S_ISDIR(inode->i_mode) &&
 247                      (bits & MDS_INODELOCK_UPDATE)) {
 248                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 249                                inode->i_ino);
 250                         truncate_inode_pages(inode->i_mapping, 0);
 251                         ll_drop_negative_dentry(inode);
 252                 }
 253
 254                 if (inode->i_sb->s_root &&
 255                     inode != inode->i_sb->s_root->d_inode &&
 256                     (bits & MDS_INODELOCK_LOOKUP))
 257                         ll_unhash_aliases(inode);
 258                 iput(inode);
 259                 break;
 260         }
 261         default:
 262                 LBUG();
 263         }
 264
 265         RETURN(0);
 266 }
 267
 268 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
 269                          int flags, void *opaque)
 270 {
 271         struct ldlm_res_id res_id =
 272                 { .name = {inode->i_ino, inode->i_generation} };
 273         struct obd_device *obddev = class_conn2obd(conn);
 274         ENTRY;
 275
 276         RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
 277                                       opaque));
 278 }
 279
 280 /* Pack the required supplementary groups into the supplied groups array.
 281  * If we don't need to use the groups from the target inode(s) then we
 282  * instead pack one or more groups from the user's supplementary group
 283  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 284 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 285 {
 286         int i;
 287
 288         LASSERT(i1 != NULL);
 289         LASSERT(suppgids != NULL);
 290
 291         if (in_group_p(i1->i_gid))
 292                 suppgids[0] = i1->i_gid;
 293         else
 294                 suppgids[0] = -1;
 295
 296         if (i2) {
 297                 if (in_group_p(i2->i_gid))
 298                         suppgids[1] = i2->i_gid;
 299                 else
 300                         suppgids[1] = -1;
 301         } else {
 302                 suppgids[1] = -1;
 303         }
 304
 305         for (i = 0; i < current_ngroups; i++) {
 306                 if (suppgids[0] == -1) {
 307                         if (current_groups[i] != suppgids[1])
 308                                 suppgids[0] = current_groups[i];
 309                         continue;
 310                 }
 311                 if (suppgids[1] == -1) {
 312                         if (current_groups[i] != suppgids[0])
 313                                 suppgids[1] = current_groups[i];
 314                         continue;
 315                 }
 316                 break;
 317         }
 318 }
 319
 320 int ll_prepare_mdc_op_data(struct mdc_op_data *op_data, struct inode *i1,
 321                             struct inode *i2, const char *name, int namelen,
 322                             int mode, void *data)
 323 {
 324         LASSERT(i1);
 325
 326         if (namelen > ll_i2sbi(i1)->ll_namelen)
 327                 return -ENAMETOOLONG;
 328         ll_i2gids(op_data->suppgids, i1, i2);
 329         ll_inode2fid(&op_data->fid1, i1);
 330
 331         if (i2)
 332                 ll_inode2fid(&op_data->fid2, i2);
 333         else
 334                 memset(&op_data->fid2, 0, sizeof(op_data->fid2));
 335
 336         op_data->name = name;
 337         op_data->namelen = namelen;
 338         op_data->create_mode = mode;
 339         op_data->mod_time = CURRENT_SECONDS;
 340         op_data->data = data;
 341
 342         return 0;
 343 }
 344
 345 static void ll_d_add(struct dentry *de, struct inode *inode)
 346 {
 347         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 348         /* d_instantiate */
 349         if (!list_empty(&de->d_alias)) {
 350                 spin_unlock(&dcache_lock);
 351                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 352                        de->d_name.len, de->d_name.name, de,
 353                        de->d_alias.next, de->d_alias.prev);
 354                 LBUG();
 355         }
 356         if (inode)
 357                 list_add(&de->d_alias, &inode->i_dentry);
 358         de->d_inode = inode;
 359
 360         /* d_rehash */
 361         if (!d_unhashed(de)) {
 362                 spin_unlock(&dcache_lock);
 363                 CERROR("dentry %.*s %p hash next %p\n",
 364                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 365                 LBUG();
 366         }
 367         __d_rehash(de, 0);
 368 }
 369
 370 /* Search "inode"'s alias list for a dentry that has the same name and parent
 371  * as de.  If found, return it.  If not found, return de.
 372  * Lustre can't use d_add_unique because don't unhash aliases for directory
 373  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 374  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 375  */
 376 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 377 {
 378         struct list_head *tmp;
 379         struct dentry *dentry;
 380         struct dentry *last_discon = NULL;
 381
 382         spin_lock(&dcache_lock);
 383         list_for_each(tmp, &inode->i_dentry) {
 384                 dentry = list_entry(tmp, struct dentry, d_alias);
 385
 386                 /* We are called here with 'de' already on the aliases list. */
 387                 if (unlikely(dentry == de)) {
 388                         CERROR("whoops\n");
 389                         continue;
 390                 }
 391
 392                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 393                         LASSERT(last_discon == NULL);
 394                         last_discon = dentry;
 395                         continue;
 396                 }
 397
 398                 if (dentry->d_parent != de->d_parent)
 399                         continue;
 400
 401                 if (dentry->d_name.hash != de->d_name.hash)
 402                         continue;
 403
 404                 if (dentry->d_name.len != de->d_name.len)
 405                         continue;
 406
 407                 if (memcmp(dentry->d_name.name, de->d_name.name,
 408                            de->d_name.len) != 0)
 409                         continue;
 410
 411                 dget_locked(dentry);
 412                 lock_dentry(dentry);
 413                 __d_drop(dentry);
 414 #ifdef DCACHE_LUSTRE_INVALID
 415                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 416 #endif
 417                 unlock_dentry(dentry);
 418                 __d_rehash(dentry, 0); /* avoid taking dcache_lock inside */
 419                 spin_unlock(&dcache_lock);
 420                 iput(inode);
 421                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 422                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 423                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 424                 return dentry;
 425         }
 426         if (last_discon) {
 427                  CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 428                         "refc %d\n", last_discon, last_discon->d_inode,
 429                         atomic_read(&last_discon->d_count));
 430                  dget_locked(last_discon);
 431                  spin_unlock(&dcache_lock);
 432                  d_rehash(de);
 433                  d_move(last_discon, de);
 434                  iput(inode);
 435                  return last_discon;
 436         }
 437
 438         ll_d_add(de, inode);
 439
 440         spin_unlock(&dcache_lock);
 441
 442         return de;
 443 }
 444
 445 int lookup_it_finish(struct ptlrpc_request *request, int offset,
 446                             struct lookup_intent *it, void *data)
 447 {
 448         struct it_cb_data *icbd = data;
 449         struct dentry **de = icbd->icbd_childp;
 450         struct inode *parent = icbd->icbd_parent;
 451         struct ll_sb_info *sbi = ll_i2sbi(parent);
 452         struct inode *inode = NULL;
 453         int rc;
 454
 455         /* NB 1 request reference will be taken away by ll_intent_lock()
 456          * when I return */
 457         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 458                 ENTRY;
 459
 460                 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
 461                                    (*de)->d_sb);
 462                 if (rc)
 463                         RETURN(rc);
 464
 465                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 466                        inode, inode->i_ino, inode->i_generation);
 467                 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 468
 469                 /* We used to query real size from OSTs here, but actually
 470                    this is not needed. For stat() calls size would be updated
 471                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 472                    2.4 and
 473                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 474                    Everybody else who needs correct file size would call
 475                    ll_glimpse_size or some equivalent themselves anyway.
 476                    Also see bug 7198. */
 477                 *de = ll_find_alias(inode, *de);
 478         } else {
 479                 ENTRY;
 480                 /* Check that parent has UPDATE lock. If there is none, we
 481                    cannot afford to hash this dentry (done by ll_d_add) as it
 482                    might get picked up later when UPDATE lock will appear */
 483                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 484                         spin_lock(&dcache_lock);
 485                         ll_d_add(*de, inode);
 486                         spin_unlock(&dcache_lock);
 487                 } else {
 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         (*de)->d_op = &ll_d_ops;
 500
 501         RETURN(0);
 502 }
 503
 504 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 505                                    struct lookup_intent *it, int lookup_flags)
 506 {
 507         struct dentry *save = dentry, *retval;
 508         struct mdc_op_data op_data;
 509         struct it_cb_data icbd;
 510         struct ptlrpc_request *req = NULL;
 511         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 512         int rc;
 513         ENTRY;
 514
 515         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 516                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 517                parent->i_generation, parent, LL_IT2STR(it));
 518
 519         if (d_mountpoint(dentry))
 520                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 521
 522         ll_frob_intent(&it, &lookup_it);
 523
 524         /* As do_lookup is called before follow_mount, root dentry may be left
 525          * not valid, revalidate it here. */
 526         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 527             (it->it_op & (IT_OPEN | IT_CREAT))) {
 528                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 529                 if (rc)
 530                         RETURN(ERR_PTR(rc));
 531         }
 532
 533         if (it->it_op == IT_GETATTR) {
 534                 rc = ll_statahead_enter(parent, &dentry, 1);
 535                 if (rc >= 0) {
 536                         ll_statahead_exit(dentry, rc);
 537                         if (rc == 1)
 538                                 RETURN(retval = dentry);
 539                 }
 540         }
 541
 542         icbd.icbd_parent = parent;
 543         icbd.icbd_childp = &dentry;
 544
 545         rc = ll_prepare_mdc_op_data(&op_data, parent, NULL, dentry->d_name.name,
 546                                     dentry->d_name.len, lookup_flags, NULL);
 547         if (rc)
 548                 RETURN(ERR_PTR(rc));
 549
 550         it->it_create_mode &= ~current->fs->umask;
 551
 552         rc = mdc_intent_lock(ll_i2mdcexp(parent), &op_data, NULL, 0, it,
 553                              lookup_flags, &req, ll_mdc_blocking_ast, 0);
 554
 555         if (rc < 0)
 556                 GOTO(out, retval = ERR_PTR(rc));
 557
 558         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 559         if (rc != 0) {
 560                 ll_intent_release(it);
 561                 GOTO(out, retval = ERR_PTR(rc));
 562         }
 563
 564         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 565             !S_ISREG(dentry->d_inode->i_mode) &&
 566             !S_ISDIR(dentry->d_inode->i_mode)) {
 567                 ll_release_openhandle(dentry, it);
 568         }
 569         ll_lookup_finish_locks(it, dentry);
 570
 571         if (dentry == save)
 572                 GOTO(out, retval = NULL);
 573         else
 574                 GOTO(out, retval = dentry);
 575  out:
 576         if (req)
 577                 ptlrpc_req_finished(req);
 578         return retval;
 579 }
 580
 581 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 582 #ifdef HAVE_VFS_INTENT_PATCHES
 583 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 584                                    struct nameidata *nd)
 585 {
 586         struct dentry *de;
 587         ENTRY;
 588
 589         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 590                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 591         else
 592                 de = ll_lookup_it(parent, dentry, NULL, 0);
 593
 594         RETURN(de);
 595 }
 596 #else
 597 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 598                                         int lookup_flags)
 599 {
 600         struct lookup_intent *it;
 601
 602         OBD_ALLOC(it, sizeof(*it));
 603         if (!it)
 604                 return ERR_PTR(-ENOMEM);
 605
 606         if (lookup_flags & LOOKUP_OPEN) {
 607                 it->it_op = IT_OPEN;
 608                 if (lookup_flags & LOOKUP_CREATE)
 609                         it->it_op |= IT_CREAT;
 610                 it->it_create_mode = oit->create_mode;
 611                 it->it_flags = oit->flags;
 612         } else {
 613                 it->it_op = IT_GETATTR;
 614         }
 615
 616 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 617                 /* Since there is no way to pass our intent to ll_file_open,
 618                  * just check the file is there. Actual open will be done
 619                  * in ll_file_open */
 620                 if (it->it_op & IT_OPEN)
 621                         it->it_op = IT_LOOKUP;
 622 #endif
 623
 624         return it;
 625 }
 626
 627 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 628                                    struct nameidata *nd)
 629 {
 630         struct dentry *de;
 631         ENTRY;
 632
 633         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 634                 struct lookup_intent *it;
 635
 636 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 637                 /* Did we came here from failed revalidate just to propagate
 638                  * its error? */
 639                 if (nd->flags & LOOKUP_OPEN)
 640                         if (IS_ERR(nd->intent.open.file))
 641                                 RETURN((struct dentry *)nd->intent.open.file);
 642 #endif
 643
 644                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 645                         it = ll_d2d(dentry)->lld_it;
 646                         ll_d2d(dentry)->lld_it = NULL;
 647                 } else {
 648                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 649                         if (IS_ERR(it))
 650                                 RETURN((struct dentry *)it);
 651                 }
 652
 653                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 654                 if (de)
 655                         dentry = de;
 656                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 657                         if (dentry->d_inode &&
 658                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 659 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 660                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 661                                         // We cannot call open here as it would
 662                                         // deadlock.
 663                                         ptlrpc_req_finished(
 664                                                        (struct ptlrpc_request *)
 665                                                           it->d.lustre.it_data);
 666                                 } else {
 667                                         struct file *filp;
 668                                         nd->intent.open.file->private_data = it;
 669                                         filp =lookup_instantiate_filp(nd,dentry,
 670                                                                       NULL);
 671 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 672 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 673  * nd->intent.open.file for error, so we need to return it as lookup's result
 674  * instead */
 675                                         if (IS_ERR(filp)) {
 676                                                 if (de)
 677                                                         dput(de);
 678                                                 de = (struct dentry *) filp;
 679                                         }
 680 #endif
 681
 682                                 }
 683 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 684                                 /* Release open handle as we have no way to
 685                                  * pass it to ll_file_open */
 686                                 ll_release_openhandle(dentry, it);
 687 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 688                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 689                                 // XXX This can only reliably work on assumption
 690                                 // that there are NO hashed negative dentries.
 691                                 ll_d2d(dentry)->lld_it = it;
 692                                 it = NULL; /* Will be freed in ll_create_nd */
 693                                 /* We absolutely depend on ll_create_nd to be
 694                                  * called to not leak this intent and possible
 695                                  * data attached to it */
 696                         }
 697                 }
 698
 699                 if (it) {
 700                         ll_intent_release(it);
 701                         OBD_FREE(it, sizeof(*it));
 702                 }
 703         } else {
 704                 de = ll_lookup_it(parent, dentry, NULL, 0);
 705         }
 706
 707         RETURN(de);
 708 }
 709 #endif
 710 #endif
 711
 712 /* We depend on "mode" being set with the proper file type/umask by now */
 713 static struct inode *ll_create_node(struct inode *dir, const char *name,
 714                                     int namelen, const void *data, int datalen,
 715                                     int mode, __u64 extra,
 716                                     struct lookup_intent *it)
 717 {
 718         struct inode *inode = NULL;
 719         struct ptlrpc_request *request = NULL;
 720         struct ll_sb_info *sbi = ll_i2sbi(dir);
 721         int rc;
 722         ENTRY;
 723
 724         LASSERT(it && it->d.lustre.it_disposition);
 725
 726         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 727         request = it->d.lustre.it_data;
 728         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 729         rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, DLM_REPLY_REC_OFF,
 730                            dir->i_sb);
 731         if (rc)
 732                 GOTO(out, inode = ERR_PTR(rc));
 733
 734         LASSERT(list_empty(&inode->i_dentry));
 735
 736         /* We asked for a lock on the directory, but were granted a
 737          * lock on the inode.  Since we finally have an inode pointer,
 738          * stuff it in the lock. */
 739         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 740                inode, inode->i_ino, inode->i_generation);
 741         mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 742         EXIT;
 743  out:
 744         ptlrpc_req_finished(request);
 745         return inode;
 746 }
 747
 748 /*
 749  * By the time this is called, we already have created the directory cache
 750  * entry for the new file, but it is so far negative - it has no inode.
 751  *
 752  * We defer creating the OBD object(s) until open, to keep the intent and
 753  * non-intent code paths similar, and also because we do not have the MDS
 754  * inode number before calling ll_create_node() (which is needed for LOV),
 755  * so we would need to do yet another RPC to the MDS to store the LOV EA
 756  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 757  * lmm_size in datalen (the MDS still has code which will handle that).
 758  *
 759  * If the create succeeds, we fill in the inode information
 760  * with d_instantiate().
 761  */
 762 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 763                         struct lookup_intent *it)
 764 {
 765         struct inode *inode;
 766         struct ptlrpc_request *request = it->d.lustre.it_data;
 767         int rc = 0;
 768         ENTRY;
 769
 770         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 771                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 772                dir->i_generation, dir, LL_IT2STR(it));
 773
 774         rc = it_open_error(DISP_OPEN_CREATE, it);
 775         if (rc)
 776                 RETURN(rc);
 777
 778         mdc_store_inode_generation(request, DLM_INTENT_REC_OFF,
 779                                    DLM_REPLY_REC_OFF);
 780         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 781                                NULL, 0, mode, 0, it);
 782         if (IS_ERR(inode)) {
 783                 RETURN(PTR_ERR(inode));
 784         }
 785
 786         d_instantiate(dentry, inode);
 787         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 788          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 789          * successful create. Hash it here. */
 790         spin_lock(&dcache_lock);
 791         if (d_unhashed(dentry))
 792                 __d_rehash(dentry, 0);
 793         spin_unlock(&dcache_lock);
 794         RETURN(0);
 795 }
 796
 797 static void ll_update_times(struct ptlrpc_request *request, int offset,
 798                             struct inode *inode)
 799 {
 800         struct mds_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 801                                                sizeof(*body));
 802         LASSERT(body);
 803
 804         /* mtime is always updated with ctime, but can be set in past.
 805            As write and utime(2) may happen within 1 second, and utime's
 806            mtime has a priority over write's one, so take mtime from mds
 807            for the same ctimes. */
 808         if (body->valid & OBD_MD_FLCTIME &&
 809             body->ctime >= LTIME_S(inode->i_ctime)) {
 810                 LTIME_S(inode->i_ctime) = body->ctime;
 811
 812                 if (body->valid & OBD_MD_FLMTIME) {
 813                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 814                                "to "LPU64"\n", inode->i_ino,
 815                                LTIME_S(inode->i_mtime), body->mtime);
 816                         LTIME_S(inode->i_mtime) = body->mtime;
 817                 }
 818         }
 819 }
 820
 821 static int ll_new_node(struct inode *dir, struct qstr *name,
 822                        const char *tgt, int mode,
 823                        int rdev, struct dentry *dchild)
 824 {
 825         struct ptlrpc_request *request = NULL;
 826         struct inode *inode = NULL;
 827         struct ll_sb_info *sbi = ll_i2sbi(dir);
 828         struct mdc_op_data op_data;
 829         int tgt_len = 0;
 830         int err;
 831
 832         ENTRY;
 833         if (unlikely(tgt != NULL))
 834                 tgt_len = strlen(tgt)+1;
 835
 836         err = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
 837                                      name->len, 0, NULL);
 838         if (err)
 839                 GOTO(err_exit, err);
 840
 841         err = mdc_create(sbi->ll_mdc_exp, &op_data, tgt, tgt_len,
 842                          mode, current->fsuid, current->fsgid,
 843                          current->cap_effective, rdev, &request);
 844         if (err)
 845                 GOTO(err_exit, err);
 846
 847         ll_update_times(request, REPLY_REC_OFF, dir);
 848
 849         if (dchild) {
 850                 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request,
 851                                     REPLY_REC_OFF, dchild->d_sb);
 852                 if (err)
 853                      GOTO(err_exit, err);
 854
 855                 d_drop(dchild);
 856                 d_instantiate(dchild, inode);
 857                 EXIT;
 858         }
 859 err_exit:
 860         ptlrpc_req_finished(request);
 861
 862         return err;
 863 }
 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                 break;
 888         case S_IFDIR:
 889                 err = -EPERM;
 890                 break;
 891         default:
 892                 err = -EINVAL;
 893         }
 894         RETURN(err);
 895 }
 896
 897 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 898 #ifndef HAVE_VFS_INTENT_PATCHES
 899 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 900 {
 901         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 902         int rc;
 903
 904         if (!it)
 905                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 906
 907         ll_d2d(dentry)->lld_it = NULL;
 908
 909         /* Was there an error? Propagate it! */
 910         if (it->d.lustre.it_status) {
 911                 rc = it->d.lustre.it_status;
 912                 goto out;
 913         }
 914
 915         rc = ll_create_it(dir, dentry, mode, it);
 916 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 917         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 918                 nd->intent.open.file->private_data = it;
 919                 lookup_instantiate_filp(nd, dentry, NULL);
 920         }
 921 #else
 922         ll_release_openhandle(dentry,it);
 923 #endif
 924
 925 out:
 926         ll_intent_release(it);
 927         OBD_FREE(it, sizeof(*it));
 928
 929         return rc;
 930 }
 931 #else
 932 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 933 {
 934
 935         if (!nd || !nd->intent.d.lustre.it_disposition)
 936                 /* No saved request? Just mknod the file */
 937                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 938
 939         return ll_create_it(dir, dentry, mode, &nd->intent);
 940 }
 941 #endif
 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);
 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 ptlrpc_request *request = NULL;
 963         struct mdc_op_data op_data;
 964         int err;
 965         struct ll_sb_info *sbi = ll_i2sbi(dir);
 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         err = ll_prepare_mdc_op_data(&op_data, src, dir, name->name,
 974                                      name->len, 0, NULL);
 975         if (err)
 976                 GOTO(out, err);
 977         err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
 978         if (err)
 979                GOTO(out, err);
 980
 981         if (dchild) {
 982                 d_drop(dchild);
 983         }
 984         ll_update_times(request, REPLY_REC_OFF, dir);
 985
 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, int mode,
 993                             struct dentry *dchild)
 994
 995 {
 996         int err;
 997
 998         ENTRY;
 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);
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 ll_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                         ll_inode2fid(fid, child->d_inode);
1020                 dput(child);
1021         }
1022 }
1023
1024 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1025                             struct qstr *name)
1026 {
1027         struct ptlrpc_request *request = NULL;
1028         struct mdc_op_data op_data = {{0}};
1029         struct dentry *dentry;
1030         int rc;
1031         ENTRY;
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         /* Check if we have something mounted at the dir we are going to delete
1036          * In such a case there would always be dentry present. */
1037         if (dparent) {
1038                 dentry = d_lookup(dparent, name);
1039                 if (dentry) {
1040                         int mounted = d_mountpoint(dentry);
1041                         dput(dentry);
1042                         if (mounted)
1043                                 GOTO(out, rc = -EBUSY);
1044                 }
1045         }
1046
1047         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1048                                     name->len, S_IFDIR, NULL);
1049         if (rc)
1050                 GOTO(out, rc);
1051
1052         ll_get_child_fid(dir, name, &op_data.fid3);
1053         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1054         if (rc)
1055                 GOTO(out, rc);
1056         ll_update_times(request, REPLY_REC_OFF, dir);
1057
1058         EXIT;
1059 out:
1060         ptlrpc_req_finished(request);
1061         return(rc);
1062 }
1063
1064 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1065 {
1066         struct mds_body *body;
1067         struct lov_mds_md *eadata;
1068         struct lov_stripe_md *lsm = NULL;
1069         struct obd_trans_info oti = { 0 };
1070         struct obdo *oa;
1071         int rc;
1072         ENTRY;
1073
1074         /* req is swabbed so this is safe */
1075         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1076
1077         if (!(body->valid & OBD_MD_FLEASIZE))
1078                 RETURN(0);
1079
1080         if (body->eadatasize == 0) {
1081                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1082                 GOTO(out, rc = -EPROTO);
1083         }
1084
1085         /* The MDS sent back the EA because we unlinked the last reference
1086          * to this file. Use this EA to unlink the objects on the OST.
1087          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1088          * check it is complete and sensible. */
1089         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1090                                     body->eadatasize, NULL);
1091         LASSERT(eadata != NULL);
1092         if (eadata == NULL) {
1093                 CERROR("Can't unpack MDS EA data\n");
1094                 GOTO(out, rc = -EPROTO);
1095         }
1096
1097         rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
1098         if (rc < 0) {
1099                 CERROR("obd_unpackmd: %d\n", rc);
1100                 GOTO(out, rc);
1101         }
1102         LASSERT(rc >= sizeof(*lsm));
1103
1104         rc = obd_checkmd(ll_i2obdexp(dir), ll_i2mdcexp(dir), lsm);
1105         if (rc)
1106                 GOTO(out_free_memmd, rc);
1107
1108         OBDO_ALLOC(oa);
1109         if (oa == NULL)
1110                 GOTO(out_free_memmd, rc = -ENOMEM);
1111
1112         oa->o_id = lsm->lsm_object_id;
1113         oa->o_mode = body->mode & S_IFMT;
1114         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
1115
1116         if (body->valid & OBD_MD_FLCOOKIE) {
1117                 oa->o_valid |= OBD_MD_FLCOOKIE;
1118                 oti.oti_logcookies =
1119                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1120                                        sizeof(struct llog_cookie) *
1121                                        lsm->lsm_stripe_count);
1122                 if (oti.oti_logcookies == NULL) {
1123                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1124                         body->valid &= ~OBD_MD_FLCOOKIE;
1125                 }
1126         }
1127
1128         rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti, ll_i2mdcexp(dir));
1129         OBDO_FREE(oa);
1130         if (rc)
1131                 CERROR("obd destroy objid "LPX64" error %d\n",
1132                        lsm->lsm_object_id, rc);
1133  out_free_memmd:
1134         obd_free_memmd(ll_i2obdexp(dir), &lsm);
1135  out:
1136         return rc;
1137 }
1138
1139 static int ll_unlink_generic(struct inode * dir, struct qstr *name)
1140 {
1141         struct ptlrpc_request *request = NULL;
1142         struct mdc_op_data op_data = {{0}};
1143         int rc;
1144         ENTRY;
1145
1146         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1147                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1148
1149         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1150                                     name->len, 0, NULL);
1151         if (rc)
1152                 GOTO(out, rc);
1153
1154         ll_get_child_fid(dir, name, &op_data.fid3);
1155         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1156         if (rc)
1157                 GOTO(out, rc);
1158
1159         ll_update_times(request, REPLY_REC_OFF, dir);
1160
1161         rc = ll_objects_destroy(request, dir);
1162         if (rc)
1163                 GOTO(out, rc);
1164         EXIT;
1165  out:
1166         ptlrpc_req_finished(request);
1167         return(rc);
1168 }
1169
1170 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1171                              struct inode *tgt, struct qstr *tgt_name)
1172 {
1173         struct ptlrpc_request *request = NULL;
1174         struct ll_sb_info *sbi = ll_i2sbi(src);
1175         struct mdc_op_data op_data = {{0}};
1176         int err;
1177
1178         ENTRY;
1179         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1180                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1181                src->i_ino, src->i_generation, src, tgt_name->len,
1182                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1183
1184         err = ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0, NULL);
1185         if (err)
1186                 GOTO(out, err);
1187
1188         ll_get_child_fid(src, src_name, &op_data.fid3);
1189         ll_get_child_fid(tgt, tgt_name, &op_data.fid4);
1190         err = mdc_rename(sbi->ll_mdc_exp, &op_data,
1191                          src_name->name, src_name->len,
1192                          tgt_name->name, tgt_name->len, &request);
1193         if (err)
1194                 GOTO(out, err);
1195         ll_update_times(request, REPLY_REC_OFF, src);
1196         ll_update_times(request, REPLY_REC_OFF, tgt);
1197         err = ll_objects_destroy(request, src);
1198         if (err)
1199                 GOTO(out, err);
1200
1201         EXIT;
1202 out:
1203         ptlrpc_req_finished(request);
1204
1205         return(err);
1206 }
1207
1208 #ifdef HAVE_VFS_INTENT_PATCHES
1209 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1210 {
1211         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1212 }
1213 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1214 {
1215         return ll_rename_generic(srcnd->dentry->d_inode, &srcnd->last,
1216                                  tgtnd->dentry->d_inode, &tgtnd->last);
1217 }
1218 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1219 {
1220         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1221                                &tgtnd->last, NULL);
1222 }
1223 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1224 {
1225         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1226 }
1227 static int ll_rmdir_raw(struct nameidata *nd)
1228 {
1229         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1230 }
1231 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1232 {
1233         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1234 }
1235 static int ll_unlink_raw(struct nameidata *nd)
1236 {
1237         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1238 }
1239 #endif
1240
1241 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1242                     ll_dev_t rdev)
1243 {
1244         return ll_mknod_generic(dir, &dchild->d_name, mode,
1245                                 old_encode_dev(rdev), dchild);
1246 }
1247
1248 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1249 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1250 {
1251         return ll_unlink_generic(dir, &dentry->d_name);
1252 }
1253 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1254 {
1255         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1256 }
1257 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1258 {
1259         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1260 }
1261 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1262                       const char *oldname)
1263 {
1264         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1265 }
1266 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1267                    struct dentry *new_dentry)
1268 {
1269         return ll_link_generic(old_dentry->d_inode, dir,
1270                                &new_dentry->d_name, new_dentry);
1271 }
1272 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1273                      struct inode *new_dir, struct dentry *new_dentry)
1274 {
1275         return ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1276                                  &new_dentry->d_name);
1277 }
1278 #endif
1279
1280 struct inode_operations ll_dir_inode_operations = {
1281 #ifdef HAVE_VFS_INTENT_PATCHES
1282         .link_raw           = ll_link_raw,
1283         .unlink_raw         = ll_unlink_raw,
1284         .symlink_raw        = ll_symlink_raw,
1285         .mkdir_raw          = ll_mkdir_raw,
1286         .rmdir_raw          = ll_rmdir_raw,
1287         .mknod_raw          = ll_mknod_raw,
1288         .rename_raw         = ll_rename_raw,
1289         .setattr            = ll_setattr,
1290         .setattr_raw        = ll_setattr_raw,
1291 #endif
1292         .mknod              = ll_mknod,
1293 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1294         .create_it          = ll_create_it,
1295         .lookup_it          = ll_lookup_it,
1296         .revalidate_it      = ll_inode_revalidate_it,
1297 #else
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 #endif
1310         .permission         = ll_inode_permission,
1311         .setxattr           = ll_setxattr,
1312         .getxattr           = ll_getxattr,
1313         .listxattr          = ll_listxattr,
1314         .removexattr        = ll_removexattr,
1315 };
1316
1317 struct inode_operations ll_special_inode_operations = {
1318 #ifdef HAVE_VFS_INTENT_PATCHES
1319         .setattr_raw    = ll_setattr_raw,
1320 #endif
1321         .setattr        = ll_setattr,
1322 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1323         .getattr        = ll_getattr,
1324 #else
1325         .revalidate_it  = ll_inode_revalidate_it,
1326 #endif
1327         .permission     = ll_inode_permission,
1328         .setxattr       = ll_setxattr,
1329         .getxattr       = ll_getxattr,
1330         .listxattr      = ll_listxattr,
1331         .removexattr    = ll_removexattr,
1332 };