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 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  75 static int ll_test_inode(struct inode *inode, void *opaque)
  76 {
  77         struct ll_inode_info *lli = ll_i2info(inode);
  78         struct lustre_md     *md = opaque;
  79
  80         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  81                 CERROR("MDS body missing FID\n");
  82                 return 0;
  83         }
  84
  85         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
  86                 return 0;
  87
  88         return 1;
  89 }
  90
  91 static int ll_set_inode(struct inode *inode, void *opaque)
  92 {
  93         return 0;
  94 }
  95
  96
  97 /*
  98  * Get an inode by inode number (already instantiated by the intent lookup).
  99  * Returns inode or NULL
 100  */
 101 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 102                       struct lustre_md *md)
 103 {
 104         struct ll_inode_info *lli;
 105         struct inode         *inode;
 106         ENTRY;
 107
 108         LASSERT(hash != 0);
 109         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 110
 111         if (inode) {
 112                 lli = ll_i2info(inode);
 113                 if (inode->i_state & I_NEW) {
 114                         ll_read_inode2(inode, md);
 115                         unlock_new_inode(inode);
 116                 } else {
 117                         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 118                                 ll_update_inode(inode, md);
 119                 }
 120                 CDEBUG(D_VFSTRACE, "got inode: %lu/%u(%p) for "DFID"\n",
 121                        inode->i_ino, inode->i_generation, inode,
 122                        PFID(&lli->lli_fid));
 123         }
 124
 125         RETURN(inode);
 126 }
 127
 128 static void ll_drop_negative_dentry(struct inode *dir)
 129 {
 130         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 131
 132         spin_lock(&dcache_lock);
 133 restart:
 134         list_for_each_entry_safe(dentry, tmp_alias,
 135                                  &dir->i_dentry,d_alias) {
 136                 if (!list_empty(&dentry->d_subdirs)) {
 137                         struct dentry *child;
 138                         list_for_each_entry_safe(child, tmp_subdir,
 139                                                  &dentry->d_subdirs,
 140                                                  d_child) {
 141                                 /* XXX Print some debug here? */
 142                                 if (!child->d_inode)
 143                                 /* Negative dentry. If we were
 144                                    dropping dcache lock, go
 145                                    throught the list again */
 146                                         if (ll_drop_dentry(child))
 147                                                 goto restart;
 148                         }
 149                 }
 150         }
 151         spin_unlock(&dcache_lock);
 152 }
 153
 154
 155 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 156                        void *data, int flag)
 157 {
 158         int rc;
 159         struct lustre_handle lockh;
 160         ENTRY;
 161
 162         switch (flag) {
 163         case LDLM_CB_BLOCKING:
 164                 ldlm_lock2handle(lock, &lockh);
 165                 rc = ldlm_cli_cancel(&lockh);
 166                 if (rc < 0) {
 167                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 168                         RETURN(rc);
 169                 }
 170                 break;
 171         case LDLM_CB_CANCELING: {
 172                 struct inode *inode = ll_inode_from_lock(lock);
 173                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 174                 struct lu_fid *fid;
 175
 176                 /* Invalidate all dentries associated with this inode */
 177                 if (inode == NULL)
 178                         break;
 179
 180                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 181                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 182                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 183                         bits &= ~MDS_INODELOCK_LOOKUP;
 184                 if ((bits & MDS_INODELOCK_UPDATE) &&
 185                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 186                         bits &= ~MDS_INODELOCK_UPDATE;
 187                 if ((bits & MDS_INODELOCK_OPEN) &&
 188                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 189                         bits &= ~MDS_INODELOCK_OPEN;
 190
 191                 fid = ll_inode2fid(inode);
 192                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 193                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 194                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 195                         LDLM_ERROR(lock, "data mismatch with object "
 196                                    DFID" (%p)", PFID(fid), inode);
 197                 }
 198
 199                 if (bits & MDS_INODELOCK_OPEN) {
 200                         int flags = 0;
 201                         switch (lock->l_req_mode) {
 202                         case LCK_CW:
 203                                 flags = FMODE_WRITE;
 204                                 break;
 205                         case LCK_PR:
 206                                 flags = FMODE_EXEC;
 207                                 break;
 208                         case LCK_CR:
 209                                 flags = FMODE_READ;
 210                                 break;
 211                         default:
 212                                 CERROR("Unexpected lock mode for OPEN lock "
 213                                        "%d, inode %ld\n", lock->l_req_mode,
 214                                        inode->i_ino);
 215                         }
 216                         ll_md_real_close(inode, flags);
 217                 }
 218
 219                 if (bits & MDS_INODELOCK_UPDATE)
 220                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 221
 222                 if (S_ISDIR(inode->i_mode) &&
 223                      (bits & MDS_INODELOCK_UPDATE)) {
 224                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 225                                inode->i_ino);
 226                         truncate_inode_pages(inode->i_mapping, 0);
 227                         ll_drop_negative_dentry(inode);
 228                 }
 229
 230                 if (inode->i_sb->s_root &&
 231                     inode != inode->i_sb->s_root->d_inode &&
 232                     (bits & MDS_INODELOCK_LOOKUP))
 233                         ll_unhash_aliases(inode);
 234                 iput(inode);
 235                 break;
 236         }
 237         default:
 238                 LBUG();
 239         }
 240
 241         RETURN(0);
 242 }
 243
 244 __u32 ll_i2suppgid(struct inode *i)
 245 {
 246         if (in_group_p(i->i_gid))
 247                 return (__u32)i->i_gid;
 248         else
 249                 return (__u32)(-1);
 250 }
 251
 252 /* Pack the required supplementary groups into the supplied groups array.
 253  * If we don't need to use the groups from the target inode(s) then we
 254  * instead pack one or more groups from the user's supplementary group
 255  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 256 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 257 {
 258 #if 0
 259         int i;
 260 #endif
 261
 262         LASSERT(i1 != NULL);
 263         LASSERT(suppgids != NULL);
 264
 265         suppgids[0] = ll_i2suppgid(i1);
 266
 267         if (i2)
 268                 suppgids[1] = ll_i2suppgid(i2);
 269                 else
 270                         suppgids[1] = -1;
 271
 272 #if 0
 273         for (i = 0; i < current_ngroups; i++) {
 274                 if (suppgids[0] == -1) {
 275                         if (current_groups[i] != suppgids[1])
 276                                 suppgids[0] = current_groups[i];
 277                         continue;
 278                 }
 279                 if (suppgids[1] == -1) {
 280                         if (current_groups[i] != suppgids[0])
 281                                 suppgids[1] = current_groups[i];
 282                         continue;
 283                 }
 284                 break;
 285         }
 286 #endif
 287 }
 288
 289 static void ll_d_add(struct dentry *de, struct inode *inode)
 290 {
 291         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 292         /* d_instantiate */
 293         if (!list_empty(&de->d_alias)) {
 294                 spin_unlock(&dcache_lock);
 295                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 296                        de->d_name.len, de->d_name.name, de,
 297                        de->d_alias.next, de->d_alias.prev);
 298                 LBUG();
 299         }
 300         if (inode)
 301                 list_add(&de->d_alias, &inode->i_dentry);
 302         de->d_inode = inode;
 303
 304         /* d_rehash */
 305         if (!d_unhashed(de)) {
 306                 spin_unlock(&dcache_lock);
 307                 CERROR("dentry %.*s %p hash next %p\n",
 308                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 309                 LBUG();
 310         }
 311         d_rehash_cond(de, 0);
 312 }
 313
 314 /* Search "inode"'s alias list for a dentry that has the same name and parent
 315  * as de.  If found, return it.  If not found, return de.
 316  * Lustre can't use d_add_unique because don't unhash aliases for directory
 317  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 318  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 319  */
 320 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 321 {
 322         struct list_head *tmp;
 323         struct dentry *dentry;
 324         struct dentry *last_discon = NULL;
 325
 326         spin_lock(&dcache_lock);
 327         list_for_each(tmp, &inode->i_dentry) {
 328                 dentry = list_entry(tmp, struct dentry, d_alias);
 329
 330                 /* We are called here with 'de' already on the aliases list. */
 331                 if (unlikely(dentry == de)) {
 332                         CERROR("whoops\n");
 333                         continue;
 334                 }
 335
 336                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 337                         LASSERT(last_discon == NULL);
 338                         last_discon = dentry;
 339                         continue;
 340                 }
 341
 342                 if (dentry->d_parent != de->d_parent)
 343                         continue;
 344
 345                 if (dentry->d_name.hash != de->d_name.hash)
 346                         continue;
 347
 348                 if (dentry->d_name.len != de->d_name.len)
 349                         continue;
 350
 351                 if (memcmp(dentry->d_name.name, de->d_name.name,
 352                            de->d_name.len) != 0)
 353                         continue;
 354
 355                 dget_locked(dentry);
 356                 lock_dentry(dentry);
 357                 __d_drop(dentry);
 358 #ifdef DCACHE_LUSTRE_INVALID
 359                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 360 #endif
 361                 unlock_dentry(dentry);
 362                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 363                 spin_unlock(&dcache_lock);
 364                 iput(inode);
 365                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 366                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 367                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 368                 return dentry;
 369         }
 370
 371         if (last_discon) {
 372                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 373                         "refc %d\n", last_discon, last_discon->d_inode,
 374                         atomic_read(&last_discon->d_count));
 375                 dget_locked(last_discon);
 376                 spin_unlock(&dcache_lock);
 377                 d_rehash(de);
 378                 d_move(last_discon, de);
 379                 iput(inode);
 380                 return last_discon;
 381         }
 382
 383         ll_d_add(de, inode);
 384
 385         spin_unlock(&dcache_lock);
 386
 387         return de;
 388 }
 389
 390 static int lookup_it_finish(struct ptlrpc_request *request,
 391                             struct lookup_intent *it,
 392                             void *data)
 393 {
 394         struct it_cb_data *icbd = data;
 395         struct dentry **de = icbd->icbd_childp;
 396         struct inode *parent = icbd->icbd_parent;
 397         struct ll_sb_info *sbi = ll_i2sbi(parent);
 398         struct inode *inode = NULL;
 399         int rc;
 400
 401         /* NB 1 request reference will be taken away by ll_intent_lock()
 402          * when I return */
 403         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 404                 ENTRY;
 405
 406                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 407                 if (rc)
 408                         RETURN(rc);
 409
 410                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 411                        inode, inode->i_ino, inode->i_generation);
 412                 md_set_lock_data(sbi->ll_md_exp,
 413                                  &it->d.lustre.it_lock_handle, inode);
 414
 415                 /* We used to query real size from OSTs here, but actually
 416                    this is not needed. For stat() calls size would be updated
 417                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 418                    2.4 and
 419                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 420                    Everybody else who needs correct file size would call
 421                    ll_glimpse_size or some equivalent themselves anyway.
 422                    Also see bug 7198. */
 423
 424                 *de = ll_find_alias(inode, *de);
 425         } else {
 426                 ENTRY;
 427                 /* Check that parent has UPDATE lock. If there is none, we
 428                    cannot afford to hash this dentry (done by ll_d_add) as it
 429                    might get picked up later when UPDATE lock will appear */
 430                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 431                         spin_lock(&dcache_lock);
 432                         ll_d_add(*de, inode);
 433                         spin_unlock(&dcache_lock);
 434                 } else {
 435                         (*de)->d_inode = NULL;
 436                         /* We do not want to hash the dentry if don`t have a
 437                          * lock, but if this dentry is later used in d_move,
 438                          * we'd hit uninitialised list head d_hash, so we just
 439                          * do this to init d_hash field but leave dentry
 440                          * unhashed. (bug 10796). */
 441                         d_rehash(*de);
 442                         d_drop(*de);
 443                 }
 444         }
 445
 446         ll_set_dd(*de);
 447         (*de)->d_op = &ll_d_ops;
 448
 449         RETURN(0);
 450 }
 451
 452 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 453                                    struct lookup_intent *it, int lookup_flags)
 454 {
 455         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 456         struct dentry *save = dentry, *retval;
 457         struct ptlrpc_request *req = NULL;
 458         struct md_op_data *op_data;
 459         struct it_cb_data icbd;
 460         __u32 opc;
 461         int rc;
 462         ENTRY;
 463
 464         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 465                 RETURN(ERR_PTR(-ENAMETOOLONG));
 466
 467         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 468                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 469                parent->i_generation, parent, LL_IT2STR(it));
 470
 471         if (d_mountpoint(dentry))
 472                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 473
 474         ll_frob_intent(&it, &lookup_it);
 475
 476         /* As do_lookup is called before follow_mount, root dentry may be left
 477          * not valid, revalidate it here. */
 478         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 479             (it->it_op & (IT_OPEN | IT_CREAT))) {
 480                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 481                 if (rc)
 482                         RETURN(ERR_PTR(rc));
 483         }
 484
 485         icbd.icbd_childp = &dentry;
 486         icbd.icbd_parent = parent;
 487
 488         if (it->it_op & IT_CREAT ||
 489             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 490                 opc = LUSTRE_OPC_CREATE;
 491         else
 492                 opc = LUSTRE_OPC_ANY;
 493
 494         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 495                                      dentry->d_name.len, lookup_flags, opc,
 496                                      NULL);
 497         if (IS_ERR(op_data))
 498                 RETURN((void *)op_data);
 499
 500         it->it_create_mode &= ~current->fs->umask;
 501
 502         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 503                             lookup_flags, &req, ll_md_blocking_ast, 0);
 504         ll_finish_md_op_data(op_data);
 505         if (rc < 0)
 506                 GOTO(out, retval = ERR_PTR(rc));
 507
 508         rc = lookup_it_finish(req, it, &icbd);
 509         if (rc != 0) {
 510                 ll_intent_release(it);
 511                 GOTO(out, retval = ERR_PTR(rc));
 512         }
 513
 514         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 515             !S_ISREG(dentry->d_inode->i_mode) &&
 516             !S_ISDIR(dentry->d_inode->i_mode)) {
 517                 ll_release_openhandle(dentry, it);
 518         }
 519         ll_lookup_finish_locks(it, dentry);
 520
 521         if (dentry == save)
 522                 GOTO(out, retval = NULL);
 523         else
 524                 GOTO(out, retval = dentry);
 525  out:
 526         if (req)
 527                 ptlrpc_req_finished(req);
 528         return retval;
 529 }
 530
 531 #ifdef HAVE_VFS_INTENT_PATCHES
 532 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 533                                    struct nameidata *nd)
 534 {
 535         struct dentry *de;
 536         ENTRY;
 537
 538         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 539                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 540         else
 541                 de = ll_lookup_it(parent, dentry, NULL, 0);
 542
 543         RETURN(de);
 544 }
 545 #else
 546 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 547                                         int lookup_flags)
 548 {
 549         struct lookup_intent *it;
 550
 551         OBD_ALLOC(it, sizeof(*it));
 552         if (!it)
 553                 return ERR_PTR(-ENOMEM);
 554
 555         if (lookup_flags & LOOKUP_OPEN) {
 556                 it->it_op = IT_OPEN;
 557                 if (lookup_flags & LOOKUP_CREATE)
 558                         it->it_op |= IT_CREAT;
 559                 it->it_create_mode = oit->create_mode;
 560                 it->it_flags = oit->flags;
 561         } else {
 562                 it->it_op = IT_GETATTR;
 563         }
 564
 565 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 566                 /* Since there is no way to pass our intent to ll_file_open,
 567                  * just check the file is there. Actual open will be done
 568                  * in ll_file_open */
 569                 if (it->it_op & IT_OPEN)
 570                         it->it_op = IT_LOOKUP;
 571 #endif
 572
 573         return it;
 574 }
 575
 576 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 577                                    struct nameidata *nd)
 578 {
 579         struct dentry *de;
 580         ENTRY;
 581
 582         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 583                 struct lookup_intent *it;
 584
 585 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 586                 /* Did we came here from failed revalidate just to propagate
 587                  * its error? */
 588                 if (nd->flags & LOOKUP_OPEN)
 589                         if (IS_ERR(nd->intent.open.file))
 590                                 RETURN((struct dentry *)nd->intent.open.file);
 591 #endif
 592
 593                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 594                         it = ll_d2d(dentry)->lld_it;
 595                         ll_d2d(dentry)->lld_it = NULL;
 596                 } else {
 597                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 598                         if (IS_ERR(it))
 599                                 RETURN((struct dentry *)it);
 600                 }
 601
 602                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 603                 if (de)
 604                         dentry = de;
 605                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 606                         if (dentry->d_inode &&
 607                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 608 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 609                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 610                                         // We cannot call open here as it would
 611                                         // deadlock.
 612                                         ptlrpc_req_finished(
 613                                                        (struct ptlrpc_request *)
 614                                                           it->d.lustre.it_data);
 615                                 } else {
 616                                         struct file *filp;
 617                                         nd->intent.open.file->private_data = it;
 618                                         filp =lookup_instantiate_filp(nd,dentry,
 619                                                                       NULL);
 620 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 621 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 622  * nd->intent.open.file for error, so we need to return it as lookup's result
 623  * instead */
 624                                         if (IS_ERR(filp)) {
 625                                                 if (de)
 626                                                         dput(de);
 627                                                 de = (struct dentry *) filp;
 628                                         }
 629 #endif
 630
 631                                 }
 632 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 633                                 /* Release open handle as we have no way to
 634                                  * pass it to ll_file_open */
 635                                 ll_release_openhandle(dentry, it);
 636 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 637                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 638                                 // XXX This can only reliably work on assumption
 639                                 // that there are NO hashed negative dentries.
 640                                 ll_d2d(dentry)->lld_it = it;
 641                                 it = NULL; /* Will be freed in ll_create_nd */
 642                                 /* We absolutely depend on ll_create_nd to be
 643                                  * called to not leak this intent and possible
 644                                  * data attached to it */
 645                         }
 646                 }
 647
 648                 if (it) {
 649                         ll_intent_release(it);
 650                         OBD_FREE(it, sizeof(*it));
 651                 }
 652         } else {
 653                 de = ll_lookup_it(parent, dentry, NULL, 0);
 654         }
 655
 656         RETURN(de);
 657 }
 658 #endif
 659
 660 /* We depend on "mode" being set with the proper file type/umask by now */
 661 static struct inode *ll_create_node(struct inode *dir, const char *name,
 662                                     int namelen, const void *data, int datalen,
 663                                     int mode, __u64 extra,
 664                                     struct lookup_intent *it)
 665 {
 666         struct inode *inode = NULL;
 667         struct ptlrpc_request *request = NULL;
 668         struct ll_sb_info *sbi = ll_i2sbi(dir);
 669         int rc;
 670         ENTRY;
 671
 672         LASSERT(it && it->d.lustre.it_disposition);
 673
 674         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 675         request = it->d.lustre.it_data;
 676         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 677         rc = ll_prep_inode(&inode, request, dir->i_sb);
 678         if (rc)
 679                 GOTO(out, inode = ERR_PTR(rc));
 680
 681         LASSERT(list_empty(&inode->i_dentry));
 682
 683         /* We asked for a lock on the directory, but were granted a
 684          * lock on the inode.  Since we finally have an inode pointer,
 685          * stuff it in the lock. */
 686         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 687                inode, inode->i_ino, inode->i_generation);
 688         md_set_lock_data(sbi->ll_md_exp,
 689                          &it->d.lustre.it_lock_handle, inode);
 690         EXIT;
 691  out:
 692         ptlrpc_req_finished(request);
 693         return inode;
 694 }
 695
 696 /*
 697  * By the time this is called, we already have created the directory cache
 698  * entry for the new file, but it is so far negative - it has no inode.
 699  *
 700  * We defer creating the OBD object(s) until open, to keep the intent and
 701  * non-intent code paths similar, and also because we do not have the MDS
 702  * inode number before calling ll_create_node() (which is needed for LOV),
 703  * so we would need to do yet another RPC to the MDS to store the LOV EA
 704  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 705  * lmm_size in datalen (the MDS still has code which will handle that).
 706  *
 707  * If the create succeeds, we fill in the inode information
 708  * with d_instantiate().
 709  */
 710 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 711                         struct lookup_intent *it)
 712 {
 713         struct inode *inode;
 714         int rc = 0;
 715         ENTRY;
 716
 717         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 718                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 719                dir->i_generation, dir, LL_IT2STR(it));
 720
 721         rc = it_open_error(DISP_OPEN_CREATE, it);
 722         if (rc)
 723                 RETURN(rc);
 724
 725         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 726                                NULL, 0, mode, 0, it);
 727         if (IS_ERR(inode)) {
 728                 RETURN(PTR_ERR(inode));
 729         }
 730
 731         d_instantiate(dentry, inode);
 732         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 733          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 734          * successful create. Hash it here. */
 735         spin_lock(&dcache_lock);
 736         if (d_unhashed(dentry))
 737                 d_rehash_cond(dentry, 0);
 738         spin_unlock(&dcache_lock);
 739         RETURN(0);
 740 }
 741
 742 static void ll_update_times(struct ptlrpc_request *request,
 743                             struct inode *inode)
 744 {
 745         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 746                                                        &RMF_MDT_BODY);
 747
 748         LASSERT(body);
 749         /* mtime is always updated with ctime, but can be set in past.
 750            As write and utime(2) may happen within 1 second, and utime's
 751            mtime has a priority over write's one, so take mtime from mds
 752            for the same ctimes. */
 753         if (body->valid & OBD_MD_FLCTIME &&
 754             body->ctime >= LTIME_S(inode->i_ctime)) {
 755                 LTIME_S(inode->i_ctime) = body->ctime;
 756
 757                 if (body->valid & OBD_MD_FLMTIME) {
 758                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 759                                "to "LPU64"\n", inode->i_ino,
 760                                LTIME_S(inode->i_mtime), body->mtime);
 761                         LTIME_S(inode->i_mtime) = body->mtime;
 762                 }
 763         }
 764 }
 765
 766 static int ll_new_node(struct inode *dir, struct qstr *name,
 767                        const char *tgt, int mode, int rdev,
 768                        struct dentry *dchild, __u32 opc)
 769 {
 770         struct ptlrpc_request *request = NULL;
 771         struct md_op_data *op_data;
 772         struct inode *inode = NULL;
 773         struct ll_sb_info *sbi = ll_i2sbi(dir);
 774         int tgt_len = 0;
 775         int err;
 776
 777         ENTRY;
 778         if (unlikely(tgt != NULL))
 779                 tgt_len = strlen(tgt) + 1;
 780
 781         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 782                                      name->len, 0, opc, NULL);
 783         if (IS_ERR(op_data))
 784                 GOTO(err_exit, err = PTR_ERR(op_data));
 785
 786         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 787                         current->fsuid, current->fsgid,
 788                         current->cap_effective, rdev, &request);
 789         ll_finish_md_op_data(op_data);
 790         if (err)
 791                 GOTO(err_exit, err);
 792
 793         ll_update_times(request, dir);
 794
 795         if (dchild) {
 796                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 797                 if (err)
 798                      GOTO(err_exit, err);
 799
 800                 d_drop(dchild);
 801                 d_instantiate(dchild, inode);
 802                 EXIT;
 803         }
 804 err_exit:
 805         ptlrpc_req_finished(request);
 806
 807         return err;
 808 }
 809
 810 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 811                             unsigned rdev, struct dentry *dchild)
 812 {
 813         int err;
 814         ENTRY;
 815
 816         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 817                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 818                mode, rdev);
 819
 820         mode &= ~current->fs->umask;
 821
 822         switch (mode & S_IFMT) {
 823         case 0:
 824                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 825         case S_IFREG:
 826         case S_IFCHR:
 827         case S_IFBLK:
 828         case S_IFIFO:
 829         case S_IFSOCK:
 830                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 831                                   LUSTRE_OPC_MKNOD);
 832                 break;
 833         case S_IFDIR:
 834                 err = -EPERM;
 835                 break;
 836         default:
 837                 err = -EINVAL;
 838         }
 839         RETURN(err);
 840 }
 841
 842 #ifndef HAVE_VFS_INTENT_PATCHES
 843 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 844                         int mode, struct nameidata *nd)
 845 {
 846         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 847         int rc;
 848
 849         if (!it)
 850                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 851
 852         ll_d2d(dentry)->lld_it = NULL;
 853
 854         /* Was there an error? Propagate it! */
 855         if (it->d.lustre.it_status) {
 856                 rc = it->d.lustre.it_status;
 857                 goto out;
 858         }
 859
 860         rc = ll_create_it(dir, dentry, mode, it);
 861 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 862         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 863                 nd->intent.open.file->private_data = it;
 864                 lookup_instantiate_filp(nd, dentry, NULL);
 865         }
 866 #else
 867         ll_release_openhandle(dentry,it);
 868 #endif
 869
 870 out:
 871         ll_intent_release(it);
 872         OBD_FREE(it, sizeof(*it));
 873
 874         return rc;
 875 }
 876 #else
 877 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 878                         int mode, struct nameidata *nd)
 879 {
 880         if (!nd || !nd->intent.d.lustre.it_disposition)
 881                 /* No saved request? Just mknod the file */
 882                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 883
 884         return ll_create_it(dir, dentry, mode, &nd->intent);
 885 }
 886 #endif
 887
 888 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 889                               const char *tgt, struct dentry *dchild)
 890 {
 891         int err;
 892         ENTRY;
 893
 894         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 895                name->len, name->name, dir->i_ino, dir->i_generation,
 896                dir, 3000, tgt);
 897
 898         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 899                           0, dchild, LUSTRE_OPC_SYMLINK);
 900         RETURN(err);
 901 }
 902
 903 static int ll_link_generic(struct inode *src,  struct inode *dir,
 904                            struct qstr *name, struct dentry *dchild)
 905 {
 906         struct ll_sb_info *sbi = ll_i2sbi(dir);
 907         struct ptlrpc_request *request = NULL;
 908         struct md_op_data *op_data;
 909         int err;
 910
 911         ENTRY;
 912         CDEBUG(D_VFSTRACE,
 913                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 914                src->i_ino, src->i_generation, src, dir->i_ino,
 915                dir->i_generation, dir, name->len, name->name);
 916
 917         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 918                                      0, LUSTRE_OPC_ANY, NULL);
 919         if (IS_ERR(op_data))
 920                 RETURN(PTR_ERR(op_data));
 921
 922         err = md_link(sbi->ll_md_exp, op_data, &request);
 923         ll_finish_md_op_data(op_data);
 924         if (err)
 925                 GOTO(out, err);
 926         if (dchild)
 927                 d_drop(dchild);
 928
 929         ll_update_times(request, dir);
 930         EXIT;
 931 out:
 932         ptlrpc_req_finished(request);
 933         RETURN(err);
 934 }
 935
 936 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 937                             int mode, struct dentry *dchild)
 938
 939 {
 940         int err;
 941         ENTRY;
 942
 943         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 944                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 945
 946         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
 947         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 948
 949         RETURN(err);
 950 }
 951
 952 /* Try to find the child dentry by its name.
 953    If found, put the result fid into @fid. */
 954 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
 955                              struct lu_fid *fid)
 956 {
 957         struct dentry *parent, *child;
 958
 959         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
 960         child = d_lookup(parent, name);
 961         if (child) {
 962                 if (child->d_inode)
 963                         *fid = *ll_inode2fid(child->d_inode);
 964                 dput(child);
 965         }
 966 }
 967
 968 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
 969                             struct dentry *dchild, struct qstr *name)
 970 {
 971         struct ptlrpc_request *request = NULL;
 972         struct md_op_data *op_data;
 973         int rc;
 974         ENTRY;
 975
 976         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 977                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 978
 979         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
 980                 RETURN(-EBUSY);
 981
 982         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
 983                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
 984         if (IS_ERR(op_data))
 985                 RETURN(PTR_ERR(op_data));
 986
 987         ll_get_child_fid(dir, name, &op_data->op_fid3);
 988         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
 989         ll_finish_md_op_data(op_data);
 990         if (rc == 0)
 991                 ll_update_times(request, dir);
 992         ptlrpc_req_finished(request);
 993         RETURN(rc);
 994 }
 995
 996 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
 997 {
 998         struct mdt_body *body;
 999         struct lov_mds_md *eadata;
1000         struct lov_stripe_md *lsm = NULL;
1001         struct obd_trans_info oti = { 0 };
1002         struct obdo *oa;
1003         int rc;
1004         ENTRY;
1005
1006         /* req is swabbed so this is safe */
1007         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1008         if (!(body->valid & OBD_MD_FLEASIZE))
1009                 RETURN(0);
1010
1011         if (body->eadatasize == 0) {
1012                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1013                 GOTO(out, rc = -EPROTO);
1014         }
1015
1016         /* The MDS sent back the EA because we unlinked the last reference
1017          * to this file. Use this EA to unlink the objects on the OST.
1018          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1019          * check it is complete and sensible. */
1020         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1021                                               body->eadatasize);
1022         LASSERT(eadata != NULL);
1023
1024         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1025         if (rc < 0) {
1026                 CERROR("obd_unpackmd: %d\n", rc);
1027                 GOTO(out, rc);
1028         }
1029         LASSERT(rc >= sizeof(*lsm));
1030
1031         rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
1032         if (rc)
1033                 GOTO(out_free_memmd, rc);
1034
1035         OBDO_ALLOC(oa);
1036         if (oa == NULL)
1037                 GOTO(out_free_memmd, rc = -ENOMEM);
1038
1039         oa->o_id = lsm->lsm_object_id;
1040         oa->o_gr = lsm->lsm_object_gr;
1041         oa->o_mode = body->mode & S_IFMT;
1042         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1043
1044         if (body->valid & OBD_MD_FLCOOKIE) {
1045                 oa->o_valid |= OBD_MD_FLCOOKIE;
1046                 oti.oti_logcookies =
1047                         req_capsule_server_sized_get(&request->rq_pill,
1048                                                      &RMF_LOGCOOKIES,
1049                                                    sizeof(struct llog_cookie) *
1050                                                      lsm->lsm_stripe_count);
1051                 if (oti.oti_logcookies == NULL) {
1052                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1053                         body->valid &= ~OBD_MD_FLCOOKIE;
1054                 }
1055         }
1056
1057         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir));
1058         OBDO_FREE(oa);
1059         if (rc)
1060                 CERROR("obd destroy objid "LPX64" error %d\n",
1061                        lsm->lsm_object_id, rc);
1062  out_free_memmd:
1063         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1064  out:
1065         return rc;
1066 }
1067
1068 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1069                              struct dentry *dchild, struct qstr *name)
1070 {
1071         struct ptlrpc_request *request = NULL;
1072         struct md_op_data *op_data;
1073         int rc;
1074         ENTRY;
1075         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1076                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1077
1078         /*
1079          * XXX: unlink bind mountpoint maybe call to here,
1080          * just check it as vfs_unlink does.
1081          */
1082         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1083                 RETURN(-EBUSY);
1084
1085         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1086                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1087         if (IS_ERR(op_data))
1088                 RETURN(PTR_ERR(op_data));
1089
1090         ll_get_child_fid(dir, name, &op_data->op_fid3);
1091         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1092         ll_finish_md_op_data(op_data);
1093         if (rc)
1094                 GOTO(out, rc);
1095
1096         ll_update_times(request, dir);
1097
1098         rc = ll_objects_destroy(request, dir);
1099  out:
1100         ptlrpc_req_finished(request);
1101         RETURN(rc);
1102 }
1103
1104 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1105                              struct dentry *src_dchild, struct qstr *src_name,
1106                              struct inode *tgt, struct dentry *tgt_dparent,
1107                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1108 {
1109         struct ptlrpc_request *request = NULL;
1110         struct ll_sb_info *sbi = ll_i2sbi(src);
1111         struct md_op_data *op_data;
1112         int err;
1113         ENTRY;
1114         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1115                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1116                src->i_ino, src->i_generation, src, tgt_name->len,
1117                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1118
1119         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1120             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1121                 RETURN(-EBUSY);
1122
1123         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1124                                      LUSTRE_OPC_ANY, NULL);
1125         if (IS_ERR(op_data))
1126                 RETURN(PTR_ERR(op_data));
1127
1128         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1129         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1130         err = md_rename(sbi->ll_md_exp, op_data,
1131                         src_name->name, src_name->len,
1132                         tgt_name->name, tgt_name->len, &request);
1133         ll_finish_md_op_data(op_data);
1134         if (!err) {
1135                 ll_update_times(request, src);
1136                 ll_update_times(request, tgt);
1137                 err = ll_objects_destroy(request, src);
1138         }
1139
1140         ptlrpc_req_finished(request);
1141
1142         RETURN(err);
1143 }
1144
1145 #ifdef HAVE_VFS_INTENT_PATCHES
1146 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1147 {
1148         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1149 }
1150 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1151 {
1152         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1153                                  NULL, &srcnd->last,
1154                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1155                                  NULL, &tgtnd->last);
1156 }
1157 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1158 {
1159         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1160                                &tgtnd->last, NULL);
1161 }
1162 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1163 {
1164         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1165 }
1166 static int ll_rmdir_raw(struct nameidata *nd)
1167 {
1168         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1169                                 &nd->last);
1170 }
1171 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1172 {
1173         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1174 }
1175 static int ll_unlink_raw(struct nameidata *nd)
1176 {
1177         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1178                                  &nd->last);
1179 }
1180 #endif
1181
1182 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1183                     ll_dev_t rdev)
1184 {
1185         return ll_mknod_generic(dir, &dchild->d_name, mode,
1186                                 old_encode_dev(rdev), dchild);
1187 }
1188
1189 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1190 {
1191         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1192 }
1193 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1194 {
1195         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1196 }
1197 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1198 {
1199         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1200 }
1201 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1202                       const char *oldname)
1203 {
1204         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1205 }
1206 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1207                    struct dentry *new_dentry)
1208 {
1209         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1210                                new_dentry);
1211 }
1212 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1213                      struct inode *new_dir, struct dentry *new_dentry)
1214 {
1215         return ll_rename_generic(old_dir, NULL,
1216                                  old_dentry, &old_dentry->d_name,
1217                                  new_dir, NULL, new_dentry,
1218                                  &new_dentry->d_name);
1219 }
1220
1221 struct inode_operations ll_dir_inode_operations = {
1222 #ifdef HAVE_VFS_INTENT_PATCHES
1223         .link_raw           = ll_link_raw,
1224         .unlink_raw         = ll_unlink_raw,
1225         .symlink_raw        = ll_symlink_raw,
1226         .mkdir_raw          = ll_mkdir_raw,
1227         .rmdir_raw          = ll_rmdir_raw,
1228         .mknod_raw          = ll_mknod_raw,
1229         .rename_raw         = ll_rename_raw,
1230         .setattr            = ll_setattr,
1231         .setattr_raw        = ll_setattr_raw,
1232 #endif
1233         .mknod              = ll_mknod,
1234         .lookup             = ll_lookup_nd,
1235         .create             = ll_create_nd,
1236         /* We need all these non-raw things for NFSD, to not patch it. */
1237         .unlink             = ll_unlink,
1238         .mkdir              = ll_mkdir,
1239         .rmdir              = ll_rmdir,
1240         .symlink            = ll_symlink,
1241         .link               = ll_link,
1242         .rename             = ll_rename,
1243         .setattr            = ll_setattr,
1244         .getattr            = ll_getattr,
1245         .permission         = ll_inode_permission,
1246         .setxattr           = ll_setxattr,
1247         .getxattr           = ll_getxattr,
1248         .listxattr          = ll_listxattr,
1249         .removexattr        = ll_removexattr,
1250 };
1251
1252 struct inode_operations ll_special_inode_operations = {
1253 #ifdef HAVE_VFS_INTENT_PATCHES
1254         .setattr_raw    = ll_setattr_raw,
1255 #endif
1256         .setattr        = ll_setattr,
1257         .getattr        = ll_getattr,
1258         .permission     = ll_inode_permission,
1259         .setxattr       = ll_setxattr,
1260         .getxattr       = ll_getxattr,
1261         .listxattr      = ll_listxattr,
1262         .removexattr    = ll_removexattr,
1263 };