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