lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/fs.h>
  23 #include <linux/sched.h>
  24 #include <linux/mm.h>
  25 #include <linux/smp_lock.h>
  26 #include <linux/quotaops.h>
  27 #include <linux/highmem.h>
  28 #include <linux/pagemap.h>
  29
  30 #define DEBUG_SUBSYSTEM S_LLITE
  31
  32 #include <obd_support.h>
  33 #include <lustre_lite.h>
  34 #include <lustre_dlm.h>
  35 #include <linux/lustre_version.h>
  36 #include "llite_internal.h"
  37
  38 /* methods */
  39
  40 /* called from iget{4,5_locked}->find_inode() under inode_lock spinlock */
  41 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
  42 static int ll_test_inode(struct inode *inode, unsigned long ino, void *opaque)
  43 #else
  44 static int ll_test_inode(struct inode *inode, void *opaque)
  45 #endif
  46 {
  47         static int last_ino, last_gen, last_count;
  48         struct lustre_md *md = opaque;
  49
  50         if (!(md->body->valid & (OBD_MD_FLGENER | OBD_MD_FLID))) {
  51                 CERROR("MDS body missing inum or generation\n");
  52                 return 0;
  53         }
  54
  55         if (last_ino == md->body->ino && last_gen == md->body->generation &&
  56             last_count < 500) {
  57                 last_count++;
  58         } else {
  59                 if (last_count > 1)
  60                         CDEBUG(D_VFSTRACE, "compared %u/%u %u times\n",
  61                                last_ino, last_gen, last_count);
  62                 last_count = 0;
  63                 last_ino = md->body->ino;
  64                 last_gen = md->body->generation;
  65                 CDEBUG(D_VFSTRACE,
  66                        "comparing inode %p ino %lu/%u to body "LPU64"/%u\n",
  67                        inode, inode->i_ino, inode->i_generation,
  68                        md->body->ino, md->body->generation);
  69         }
  70
  71 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
  72         if (inode->i_ino != md->body->ino)
  73                 return 0;
  74 #endif
  75         if (inode->i_generation != md->body->generation) {
  76 #ifdef HAVE_EXPORT___IGET
  77                 if (inode->i_state & (I_FREEING | I_CLEAR))
  78                         return 0;
  79                 if (inode->i_nlink == 0)
  80                         return 0;
  81
  82                 /* add "duplicate" inode into deathrow for destroy */
  83                 spin_lock(&ll_i2sbi(inode)->ll_deathrow_lock);
  84                 if (list_empty(&ll_i2info(inode)->lli_dead_list)) {
  85                         __iget(inode);
  86                         list_add(&ll_i2info(inode)->lli_dead_list,
  87                                  &ll_i2sbi(inode)->ll_deathrow);
  88                 }
  89                 spin_unlock(&ll_i2sbi(inode)->ll_deathrow_lock);
  90 #endif
  91
  92                 return 0;
  93         }
  94
  95         /* Apply the attributes in 'opaque' to this inode */
  96         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
  97                 ll_update_inode(inode, md);
  98         return 1;
  99 }
 100
 101 extern struct dentry_operations ll_d_ops;
 102
 103 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
 104 {
 105         ENTRY;
 106
 107         ldlm_lock_decref(lockh, mode);
 108
 109         RETURN(0);
 110 }
 111
 112 /* Get an inode by inode number (already instantiated by the intent lookup).
 113  * Returns inode or NULL
 114  */
 115 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 116 int ll_set_inode(struct inode *inode, void *opaque)
 117 {
 118         ll_read_inode2(inode, opaque);
 119         return 0;
 120 }
 121
 122 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 123                       struct lustre_md *md)
 124 {
 125         struct inode *inode;
 126
 127         LASSERT(hash != 0);
 128         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 129
 130         if (inode) {
 131                 if (inode->i_state & I_NEW)
 132                         unlock_new_inode(inode);
 133                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
 134                        inode->i_generation, inode);
 135         }
 136
 137         return inode;
 138 }
 139 #else
 140 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 141                       struct lustre_md *md)
 142 {
 143         struct inode *inode;
 144         LASSERT(hash != 0);
 145         inode = iget4(sb, hash, ll_test_inode, md);
 146         if (inode)
 147                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
 148                        inode->i_generation, inode);
 149         return inode;
 150 }
 151 #endif
 152
 153 static void ll_drop_negative_dentry(struct inode *dir)
 154 {
 155         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 156
 157         spin_lock(&dcache_lock);
 158 restart:
 159         list_for_each_entry_safe(dentry, tmp_alias,
 160                                  &dir->i_dentry,d_alias) {
 161                 if (!list_empty(&dentry->d_subdirs)) {
 162                         struct dentry *child;
 163                         list_for_each_entry_safe(child, tmp_subdir,
 164                                                  &dentry->d_subdirs,
 165                                                  d_child) {
 166                                 /* XXX Print some debug here? */
 167                                 if (!child->d_inode)
 168                                 /* Negative dentry. If we were
 169                                    dropping dcache lock, go
 170                                    throught the list again */
 171                                         if (ll_drop_dentry(child))
 172                                                 goto restart;
 173                         }
 174                 }
 175         }
 176         spin_unlock(&dcache_lock);
 177 }
 178
 179 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 180                         void *data, int flag)
 181 {
 182         int rc;
 183         struct lustre_handle lockh;
 184         ENTRY;
 185
 186         switch (flag) {
 187         case LDLM_CB_BLOCKING:
 188                 ldlm_lock2handle(lock, &lockh);
 189                 rc = ldlm_cli_cancel(&lockh);
 190                 if (rc < 0) {
 191                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 192                         RETURN(rc);
 193                 }
 194                 break;
 195         case LDLM_CB_CANCELING: {
 196                 struct inode *inode = ll_inode_from_lock(lock);
 197                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 198
 199                 /* Invalidate all dentries associated with this inode */
 200                 if (inode == NULL)
 201                         break;
 202
 203                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 204                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 205                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 206                         bits &= ~MDS_INODELOCK_LOOKUP;
 207                 if ((bits & MDS_INODELOCK_UPDATE) &&
 208                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 209                         bits &= ~MDS_INODELOCK_UPDATE;
 210                 if ((bits & MDS_INODELOCK_OPEN) &&
 211                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 212                         bits &= ~MDS_INODELOCK_OPEN;
 213
 214                 if (lock->l_resource->lr_name.name[0] != inode->i_ino ||
 215                     lock->l_resource->lr_name.name[1] != inode->i_generation) {
 216                         LDLM_ERROR(lock, "data mismatch with ino %lu/%u (%p)",
 217                                    inode->i_ino, inode->i_generation, inode);
 218                 }
 219
 220                 if (bits & MDS_INODELOCK_OPEN) {
 221                         int flags = 0;
 222                         switch (lock->l_req_mode) {
 223                         case LCK_CW:
 224                                 flags = FMODE_WRITE;
 225                                 break;
 226                         case LCK_PR:
 227                                 flags = FMODE_EXEC;
 228                                 if (!FMODE_EXEC)
 229                                         CERROR("open PR lock without FMODE_EXEC\n");
 230                                 break;
 231                         case LCK_CR:
 232                                 flags = FMODE_READ;
 233                                 break;
 234                         default:
 235                                 CERROR("Unexpected lock mode for OPEN lock "
 236                                        "%d, inode %ld\n", lock->l_req_mode,
 237                                        inode->i_ino);
 238                         }
 239                         ll_mdc_real_close(inode, flags);
 240                 }
 241
 242                 if (bits & MDS_INODELOCK_UPDATE)
 243                         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
 244                                   &(ll_i2info(inode)->lli_flags));
 245
 246                 if (S_ISDIR(inode->i_mode) &&
 247                      (bits & MDS_INODELOCK_UPDATE)) {
 248                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 249                                inode->i_ino);
 250                         truncate_inode_pages(inode->i_mapping, 0);
 251                         ll_drop_negative_dentry(inode);
 252                         inode->i_version++; /* XXX: remove with inode version*/
 253                 }
 254
 255                 if (inode->i_sb->s_root &&
 256                     inode != inode->i_sb->s_root->d_inode &&
 257                     (bits & MDS_INODELOCK_LOOKUP))
 258                         ll_unhash_aliases(inode);
 259                 iput(inode);
 260                 break;
 261         }
 262         default:
 263                 LBUG();
 264         }
 265
 266         RETURN(0);
 267 }
 268
 269 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
 270                          int flags, void *opaque)
 271 {
 272         struct ldlm_res_id res_id =
 273                 { .name = {inode->i_ino, inode->i_generation} };
 274         struct obd_device *obddev = class_conn2obd(conn);
 275         ENTRY;
 276
 277         RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
 278                                       opaque));
 279 }
 280
 281 /* Pack the required supplementary groups into the supplied groups array.
 282  * If we don't need to use the groups from the target inode(s) then we
 283  * instead pack one or more groups from the user's supplementary group
 284  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 285 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 286 {
 287         int i;
 288
 289         LASSERT(i1 != NULL);
 290         LASSERT(suppgids != NULL);
 291
 292         if (in_group_p(i1->i_gid))
 293                 suppgids[0] = i1->i_gid;
 294         else
 295                 suppgids[0] = -1;
 296
 297         if (i2) {
 298                 if (in_group_p(i2->i_gid))
 299                         suppgids[1] = i2->i_gid;
 300                 else
 301                         suppgids[1] = -1;
 302         } else {
 303                 suppgids[1] = -1;
 304         }
 305
 306         for (i = 0; i < current_ngroups; i++) {
 307                 if (suppgids[0] == -1) {
 308                         if (current_groups[i] != suppgids[1])
 309                                 suppgids[0] = current_groups[i];
 310                         continue;
 311                 }
 312                 if (suppgids[1] == -1) {
 313                         if (current_groups[i] != suppgids[0])
 314                                 suppgids[1] = current_groups[i];
 315                         continue;
 316                 }
 317                 break;
 318         }
 319 }
 320
 321 int ll_prepare_mdc_op_data(struct mdc_op_data *op_data, struct inode *i1,
 322                             struct inode *i2, const char *name, int namelen,
 323                             int mode, void *data)
 324 {
 325         LASSERT(i1);
 326
 327         if (namelen > ll_i2sbi(i1)->ll_namelen)
 328                 return -ENAMETOOLONG;
 329         ll_i2gids(op_data->suppgids, i1, i2);
 330         ll_inode2fid(&op_data->fid1, i1);
 331
 332         if (i2)
 333                 ll_inode2fid(&op_data->fid2, i2);
 334         else
 335                 memset(&op_data->fid2, 0, sizeof(op_data->fid2));
 336
 337         op_data->name = name;
 338         op_data->namelen = namelen;
 339         op_data->create_mode = mode;
 340         op_data->mod_time = CURRENT_SECONDS;
 341         op_data->data = data;
 342
 343         return 0;
 344 }
 345
 346 static void ll_d_add(struct dentry *de, struct inode *inode)
 347 {
 348         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 349         /* d_instantiate */
 350         if (!list_empty(&de->d_alias)) {
 351                 spin_unlock(&dcache_lock);
 352                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 353                        de->d_name.len, de->d_name.name, de,
 354                        de->d_alias.next, de->d_alias.prev);
 355                 LBUG();
 356         }
 357         if (inode)
 358                 list_add(&de->d_alias, &inode->i_dentry);
 359         de->d_inode = inode;
 360
 361         /* d_rehash */
 362         if (!d_unhashed(de)) {
 363                 spin_unlock(&dcache_lock);
 364                 CERROR("dentry %.*s %p hash next %p\n",
 365                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 366                 LBUG();
 367         }
 368         d_rehash_cond(de, 0);
 369 }
 370
 371 /* Search "inode"'s alias list for a dentry that has the same name and parent
 372  * as de.  If found, return it.  If not found, return de.
 373  * Lustre can't use d_add_unique because don't unhash aliases for directory
 374  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 375  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 376  */
 377 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 378 {
 379         struct list_head *tmp;
 380         struct dentry *dentry;
 381         struct dentry *last_discon = NULL;
 382
 383         spin_lock(&dcache_lock);
 384         list_for_each(tmp, &inode->i_dentry) {
 385                 dentry = list_entry(tmp, struct dentry, d_alias);
 386
 387                 /* We are called here with 'de' already on the aliases list. */
 388                 if (unlikely(dentry == de)) {
 389                         CERROR("whoops\n");
 390                         continue;
 391                 }
 392
 393                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 394                         LASSERT(last_discon == NULL);
 395                         last_discon = dentry;
 396                         continue;
 397                 }
 398
 399                 if (dentry->d_parent != de->d_parent)
 400                         continue;
 401
 402                 if (dentry->d_name.hash != de->d_name.hash)
 403                         continue;
 404
 405                 if (dentry->d_name.len != de->d_name.len)
 406                         continue;
 407
 408                 if (memcmp(dentry->d_name.name, de->d_name.name,
 409                            de->d_name.len) != 0)
 410                         continue;
 411
 412                 dget_locked(dentry);
 413                 lock_dentry(dentry);
 414                 __d_drop(dentry);
 415 #ifdef DCACHE_LUSTRE_INVALID
 416                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 417 #endif
 418                 unlock_dentry(dentry);
 419                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 420                 spin_unlock(&dcache_lock);
 421                 iput(inode);
 422                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 423                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 424                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 425                 return dentry;
 426         }
 427         if (last_discon) {
 428                  CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 429                         "refc %d\n", last_discon, last_discon->d_inode,
 430                         atomic_read(&last_discon->d_count));
 431                  dget_locked(last_discon);
 432                  spin_unlock(&dcache_lock);
 433                  d_rehash(de);
 434                  d_move(last_discon, de);
 435                  iput(inode);
 436                  return last_discon;
 437         }
 438
 439         ll_d_add(de, inode);
 440
 441         spin_unlock(&dcache_lock);
 442
 443         return de;
 444 }
 445
 446 int lookup_it_finish(struct ptlrpc_request *request, int offset,
 447                             struct lookup_intent *it, void *data)
 448 {
 449         struct it_cb_data *icbd = data;
 450         struct dentry **de = icbd->icbd_childp;
 451         struct inode *parent = icbd->icbd_parent;
 452         struct ll_sb_info *sbi = ll_i2sbi(parent);
 453         struct inode *inode = NULL;
 454         int rc;
 455
 456         /* NB 1 request reference will be taken away by ll_intent_lock()
 457          * when I return */
 458         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 459                 ENTRY;
 460
 461                 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
 462                                    (*de)->d_sb);
 463                 if (rc)
 464                         RETURN(rc);
 465
 466                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 467                        inode, inode->i_ino, inode->i_generation);
 468                 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 469
 470                 /* We used to query real size from OSTs here, but actually
 471                    this is not needed. For stat() calls size would be updated
 472                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 473                    2.4 and
 474                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 475                    Everybody else who needs correct file size would call
 476                    ll_glimpse_size or some equivalent themselves anyway.
 477                    Also see bug 7198. */
 478                 *de = ll_find_alias(inode, *de);
 479         } else {
 480                 ENTRY;
 481                 /* Check that parent has UPDATE lock. If there is none, we
 482                    cannot afford to hash this dentry (done by ll_d_add) as it
 483                    might get picked up later when UPDATE lock will appear */
 484                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 485                         spin_lock(&dcache_lock);
 486                         ll_d_add(*de, inode);
 487                         spin_unlock(&dcache_lock);
 488                 } else {
 489                         /* We do not want to hash the dentry if don`t have a
 490                          * lock, but if this dentry is later used in d_move,
 491                          * we'd hit uninitialised list head d_hash, so we just
 492                          * do this to init d_hash field but leave dentry
 493                          * unhashed. (bug 10796). */
 494                         d_rehash(*de);
 495                         d_drop(*de);
 496                 }
 497         }
 498
 499         ll_set_dd(*de);
 500         (*de)->d_op = &ll_d_ops;
 501
 502         RETURN(0);
 503 }
 504
 505 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 506                                    struct lookup_intent *it, int lookup_flags)
 507 {
 508         struct dentry *save = dentry, *retval;
 509         struct mdc_op_data op_data;
 510         struct it_cb_data icbd;
 511         struct ptlrpc_request *req = NULL;
 512         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 513         int rc;
 514         ENTRY;
 515
 516         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 517                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 518                parent->i_generation, parent, LL_IT2STR(it));
 519
 520         if (d_mountpoint(dentry))
 521                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 522
 523         ll_frob_intent(&it, &lookup_it);
 524
 525         /* As do_lookup is called before follow_mount, root dentry may be left
 526          * not valid, revalidate it here. */
 527         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 528             (it->it_op & (IT_OPEN | IT_CREAT))) {
 529                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 530                 if (rc)
 531                         RETURN(ERR_PTR(rc));
 532         }
 533
 534         if (it->it_op == IT_GETATTR) {
 535                 rc = ll_statahead_enter(parent, &dentry, 1);
 536                 if (rc >= 0) {
 537                         ll_statahead_exit(dentry, rc);
 538                         if (rc == 1)
 539                                 RETURN(retval = dentry);
 540                 }
 541         }
 542
 543         icbd.icbd_parent = parent;
 544         icbd.icbd_childp = &dentry;
 545
 546         rc = ll_prepare_mdc_op_data(&op_data, parent, NULL, dentry->d_name.name,
 547                                     dentry->d_name.len, lookup_flags, NULL);
 548         if (rc)
 549                 RETURN(ERR_PTR(rc));
 550
 551         it->it_create_mode &= ~current->fs->umask;
 552
 553         rc = mdc_intent_lock(ll_i2mdcexp(parent), &op_data, NULL, 0, it,
 554                              lookup_flags, &req, ll_mdc_blocking_ast, 0);
 555
 556         if (rc < 0)
 557                 GOTO(out, retval = ERR_PTR(rc));
 558
 559         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 560         if (rc != 0) {
 561                 ll_intent_release(it);
 562                 GOTO(out, retval = ERR_PTR(rc));
 563         }
 564
 565         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 566             !S_ISREG(dentry->d_inode->i_mode) &&
 567             !S_ISDIR(dentry->d_inode->i_mode)) {
 568                 ll_release_openhandle(dentry, it);
 569         }
 570         ll_lookup_finish_locks(it, dentry);
 571
 572         if (dentry == save)
 573                 GOTO(out, retval = NULL);
 574         else
 575                 GOTO(out, retval = dentry);
 576  out:
 577         if (req)
 578                 ptlrpc_req_finished(req);
 579         return retval;
 580 }
 581
 582 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 583 #ifdef HAVE_VFS_INTENT_PATCHES
 584 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 585                                    struct nameidata *nd)
 586 {
 587         struct dentry *de;
 588         ENTRY;
 589
 590         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 591                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 592         else
 593                 de = ll_lookup_it(parent, dentry, NULL, 0);
 594
 595         RETURN(de);
 596 }
 597 #else
 598 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 599                                         int lookup_flags)
 600 {
 601         struct lookup_intent *it;
 602
 603         OBD_ALLOC(it, sizeof(*it));
 604         if (!it)
 605                 return ERR_PTR(-ENOMEM);
 606
 607         if (lookup_flags & LOOKUP_OPEN) {
 608                 it->it_op = IT_OPEN;
 609                 if (lookup_flags & LOOKUP_CREATE)
 610                         it->it_op |= IT_CREAT;
 611                 it->it_create_mode = oit->create_mode;
 612                 it->it_flags = oit->flags;
 613         } else {
 614                 it->it_op = IT_GETATTR;
 615         }
 616
 617 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 618                 /* Since there is no way to pass our intent to ll_file_open,
 619                  * just check the file is there. Actual open will be done
 620                  * in ll_file_open */
 621                 if (it->it_op & IT_OPEN)
 622                         it->it_op = IT_LOOKUP;
 623 #endif
 624
 625         return it;
 626 }
 627
 628 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 629                                    struct nameidata *nd)
 630 {
 631         struct dentry *de;
 632         ENTRY;
 633
 634         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 635                 struct lookup_intent *it;
 636
 637 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 638                 /* Did we came here from failed revalidate just to propagate
 639                  * its error? */
 640                 if (nd->flags & LOOKUP_OPEN)
 641                         if (IS_ERR(nd->intent.open.file))
 642                                 RETURN((struct dentry *)nd->intent.open.file);
 643 #endif
 644
 645                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 646                         it = ll_d2d(dentry)->lld_it;
 647                         ll_d2d(dentry)->lld_it = NULL;
 648                 } else {
 649                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 650                         if (IS_ERR(it))
 651                                 RETURN((struct dentry *)it);
 652                 }
 653
 654                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 655                 if (de)
 656                         dentry = de;
 657                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 658                         if (dentry->d_inode &&
 659                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 660 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 661                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 662                                         // We cannot call open here as it would
 663                                         // deadlock.
 664                                         ptlrpc_req_finished(
 665                                                        (struct ptlrpc_request *)
 666                                                           it->d.lustre.it_data);
 667                                 } else {
 668                                         struct file *filp;
 669                                         nd->intent.open.file->private_data = it;
 670                                         filp =lookup_instantiate_filp(nd,dentry,
 671                                                                       NULL);
 672 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 673 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 674  * nd->intent.open.file for error, so we need to return it as lookup's result
 675  * instead */
 676                                         if (IS_ERR(filp)) {
 677                                                 if (de)
 678                                                         dput(de);
 679                                                 de = (struct dentry *) filp;
 680                                         }
 681 #endif
 682
 683                                 }
 684 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 685                                 /* Release open handle as we have no way to
 686                                  * pass it to ll_file_open */
 687                                 ll_release_openhandle(dentry, it);
 688 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 689                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 690                                 // XXX This can only reliably work on assumption
 691                                 // that there are NO hashed negative dentries.
 692                                 ll_d2d(dentry)->lld_it = it;
 693                                 it = NULL; /* Will be freed in ll_create_nd */
 694                                 /* We absolutely depend on ll_create_nd to be
 695                                  * called to not leak this intent and possible
 696                                  * data attached to it */
 697                         }
 698                 }
 699
 700                 if (it) {
 701                         ll_intent_release(it);
 702                         OBD_FREE(it, sizeof(*it));
 703                 }
 704         } else {
 705                 de = ll_lookup_it(parent, dentry, NULL, 0);
 706         }
 707
 708         RETURN(de);
 709 }
 710 #endif
 711 #endif
 712
 713 /* We depend on "mode" being set with the proper file type/umask by now */
 714 static struct inode *ll_create_node(struct inode *dir, const char *name,
 715                                     int namelen, const void *data, int datalen,
 716                                     int mode, __u64 extra,
 717                                     struct lookup_intent *it)
 718 {
 719         struct inode *inode = NULL;
 720         struct ptlrpc_request *request = NULL;
 721         struct ll_sb_info *sbi = ll_i2sbi(dir);
 722         int rc;
 723         ENTRY;
 724
 725         LASSERT(it && it->d.lustre.it_disposition);
 726
 727         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 728         request = it->d.lustre.it_data;
 729         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 730         rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, DLM_REPLY_REC_OFF,
 731                            dir->i_sb);
 732         if (rc)
 733                 GOTO(out, inode = ERR_PTR(rc));
 734
 735         LASSERT(list_empty(&inode->i_dentry));
 736
 737         /* We asked for a lock on the directory, but were granted a
 738          * lock on the inode.  Since we finally have an inode pointer,
 739          * stuff it in the lock. */
 740         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 741                inode, inode->i_ino, inode->i_generation);
 742         mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 743         EXIT;
 744  out:
 745         ptlrpc_req_finished(request);
 746         return inode;
 747 }
 748
 749 /*
 750  * By the time this is called, we already have created the directory cache
 751  * entry for the new file, but it is so far negative - it has no inode.
 752  *
 753  * We defer creating the OBD object(s) until open, to keep the intent and
 754  * non-intent code paths similar, and also because we do not have the MDS
 755  * inode number before calling ll_create_node() (which is needed for LOV),
 756  * so we would need to do yet another RPC to the MDS to store the LOV EA
 757  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 758  * lmm_size in datalen (the MDS still has code which will handle that).
 759  *
 760  * If the create succeeds, we fill in the inode information
 761  * with d_instantiate().
 762  */
 763 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 764                         struct lookup_intent *it)
 765 {
 766         struct inode *inode;
 767         struct ptlrpc_request *request = it->d.lustre.it_data;
 768         int rc = 0;
 769         ENTRY;
 770
 771         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 772                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 773                dir->i_generation, dir, LL_IT2STR(it));
 774
 775         rc = it_open_error(DISP_OPEN_CREATE, it);
 776         if (rc)
 777                 RETURN(rc);
 778
 779         mdc_store_inode_generation(request, DLM_INTENT_REC_OFF,
 780                                    DLM_REPLY_REC_OFF);
 781         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 782                                NULL, 0, mode, 0, it);
 783         if (IS_ERR(inode)) {
 784                 RETURN(PTR_ERR(inode));
 785         }
 786
 787         d_instantiate(dentry, inode);
 788         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 789          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 790          * successful create. Hash it here. */
 791         spin_lock(&dcache_lock);
 792         if (d_unhashed(dentry))
 793                 d_rehash_cond(dentry, 0);
 794         spin_unlock(&dcache_lock);
 795         RETURN(0);
 796 }
 797
 798 static void ll_update_times(struct ptlrpc_request *request, int offset,
 799                             struct inode *inode)
 800 {
 801         struct mds_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 802                                                sizeof(*body));
 803         LASSERT(body);
 804
 805         /* mtime is always updated with ctime, but can be set in past.
 806            As write and utime(2) may happen within 1 second, and utime's
 807            mtime has a priority over write's one, so take mtime from mds
 808            for the same ctimes. */
 809         if (body->valid & OBD_MD_FLCTIME &&
 810             body->ctime >= LTIME_S(inode->i_ctime)) {
 811                 LTIME_S(inode->i_ctime) = body->ctime;
 812
 813                 if (body->valid & OBD_MD_FLMTIME) {
 814                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 815                                "to "LPU64"\n", inode->i_ino,
 816                                LTIME_S(inode->i_mtime), body->mtime);
 817                         LTIME_S(inode->i_mtime) = body->mtime;
 818                 }
 819         }
 820 }
 821
 822 static int ll_new_node(struct inode *dir, struct qstr *name,
 823                        const char *tgt, int mode,
 824                        int rdev, struct dentry *dchild)
 825 {
 826         struct ptlrpc_request *request = NULL;
 827         struct inode *inode = NULL;
 828         struct ll_sb_info *sbi = ll_i2sbi(dir);
 829         struct mdc_op_data op_data;
 830         int tgt_len = 0;
 831         int err;
 832
 833         ENTRY;
 834         if (unlikely(tgt != NULL))
 835                 tgt_len = strlen(tgt)+1;
 836
 837         err = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
 838                                      name->len, 0, NULL);
 839         if (err)
 840                 GOTO(err_exit, err);
 841
 842         err = mdc_create(sbi->ll_mdc_exp, &op_data, tgt, tgt_len,
 843                          mode, current->fsuid, current->fsgid,
 844                          current->cap_effective, rdev, &request);
 845         if (err)
 846                 GOTO(err_exit, err);
 847
 848         ll_update_times(request, REPLY_REC_OFF, dir);
 849
 850         if (dchild) {
 851                 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request,
 852                                     REPLY_REC_OFF, dchild->d_sb);
 853                 if (err)
 854                      GOTO(err_exit, err);
 855
 856                 d_drop(dchild);
 857                 d_instantiate(dchild, inode);
 858                 EXIT;
 859         }
 860 err_exit:
 861         ptlrpc_req_finished(request);
 862
 863         return err;
 864 }
 865
 866
 867 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 868                             unsigned rdev, struct dentry *dchild)
 869 {
 870         int err;
 871         ENTRY;
 872
 873         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 874                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 875                mode, rdev);
 876
 877         mode &= ~current->fs->umask;
 878
 879         switch (mode & S_IFMT) {
 880         case 0:
 881                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 882         case S_IFREG:
 883         case S_IFCHR:
 884         case S_IFBLK:
 885         case S_IFIFO:
 886         case S_IFSOCK:
 887                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild);
 888                 break;
 889         case S_IFDIR:
 890                 err = -EPERM;
 891                 break;
 892         default:
 893                 err = -EINVAL;
 894         }
 895         RETURN(err);
 896 }
 897
 898 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 899 #ifndef HAVE_VFS_INTENT_PATCHES
 900 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 901 {
 902         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 903         int rc;
 904
 905         if (!it)
 906                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 907
 908         ll_d2d(dentry)->lld_it = NULL;
 909
 910         /* Was there an error? Propagate it! */
 911         if (it->d.lustre.it_status) {
 912                 rc = it->d.lustre.it_status;
 913                 goto out;
 914         }
 915
 916         rc = ll_create_it(dir, dentry, mode, it);
 917 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 918         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 919                 nd->intent.open.file->private_data = it;
 920                 lookup_instantiate_filp(nd, dentry, NULL);
 921         }
 922 #else
 923         ll_release_openhandle(dentry,it);
 924 #endif
 925
 926 out:
 927         ll_intent_release(it);
 928         OBD_FREE(it, sizeof(*it));
 929
 930         return rc;
 931 }
 932 #else
 933 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 934 {
 935
 936         if (!nd || !nd->intent.d.lustre.it_disposition)
 937                 /* No saved request? Just mknod the file */
 938                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 939
 940         return ll_create_it(dir, dentry, mode, &nd->intent);
 941 }
 942 #endif
 943 #endif
 944
 945 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 946                               const char *tgt, struct dentry *dchild)
 947 {
 948         int err;
 949         ENTRY;
 950
 951         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 952                name->len, name->name, dir->i_ino, dir->i_generation,
 953                dir, 3000, tgt);
 954
 955         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 956                           0, dchild);
 957         RETURN(err);
 958 }
 959
 960 static int ll_link_generic(struct inode *src,  struct inode *dir,
 961                            struct qstr *name, struct dentry *dchild)
 962 {
 963         struct ptlrpc_request *request = NULL;
 964         struct mdc_op_data op_data;
 965         int err;
 966         struct ll_sb_info *sbi = ll_i2sbi(dir);
 967
 968         ENTRY;
 969         CDEBUG(D_VFSTRACE,
 970                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 971                src->i_ino, src->i_generation, src, dir->i_ino,
 972                dir->i_generation, dir, name->len, name->name);
 973
 974         err = ll_prepare_mdc_op_data(&op_data, src, dir, name->name,
 975                                      name->len, 0, NULL);
 976         if (err)
 977                 GOTO(out, err);
 978         err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
 979         if (err)
 980                GOTO(out, err);
 981
 982         if (dchild) {
 983                 d_drop(dchild);
 984         }
 985         ll_update_times(request, REPLY_REC_OFF, dir);
 986
 987         EXIT;
 988 out:
 989         ptlrpc_req_finished(request);
 990         RETURN(err);
 991 }
 992
 993 static int ll_mkdir_generic(struct inode *dir, struct qstr *name, int mode,
 994                             struct dentry *dchild)
 995
 996 {
 997         int err;
 998
 999         ENTRY;
1000         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1001                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1002
1003         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1004         err = ll_new_node(dir, name, NULL, mode, 0, dchild);
1005
1006         RETURN(err);
1007 }
1008
1009 /* Try to find the child dentry by its name.
1010    If found, put the result fid into @fid. */
1011 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1012                              struct ll_fid *fid)
1013 {
1014         struct dentry *parent, *child;
1015
1016         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1017         child = d_lookup(parent, name);
1018         if (child) {
1019                 if (child->d_inode)
1020                         ll_inode2fid(fid, child->d_inode);
1021                 dput(child);
1022         }
1023 }
1024
1025 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1026                             struct qstr *name)
1027 {
1028         struct ptlrpc_request *request = NULL;
1029         struct mdc_op_data op_data = {{0}};
1030         struct dentry *dentry;
1031         int rc;
1032         ENTRY;
1033         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1034                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1035
1036         /* Check if we have something mounted at the dir we are going to delete
1037          * In such a case there would always be dentry present. */
1038         if (dparent) {
1039                 dentry = d_lookup(dparent, name);
1040                 if (dentry) {
1041                         int mounted = d_mountpoint(dentry);
1042                         dput(dentry);
1043                         if (mounted)
1044                                 GOTO(out, rc = -EBUSY);
1045                 }
1046         }
1047
1048         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1049                                     name->len, S_IFDIR, NULL);
1050         if (rc)
1051                 GOTO(out, rc);
1052
1053         ll_get_child_fid(dir, name, &op_data.fid3);
1054         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1055         if (rc)
1056                 GOTO(out, rc);
1057         ll_update_times(request, REPLY_REC_OFF, dir);
1058
1059         EXIT;
1060 out:
1061         ptlrpc_req_finished(request);
1062         return(rc);
1063 }
1064
1065 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1066 {
1067         struct mds_body *body;
1068         struct lov_mds_md *eadata;
1069         struct lov_stripe_md *lsm = NULL;
1070         struct obd_trans_info oti = { 0 };
1071         struct obdo *oa;
1072         int rc;
1073         ENTRY;
1074
1075         /* req is swabbed so this is safe */
1076         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1077
1078         if (!(body->valid & OBD_MD_FLEASIZE))
1079                 RETURN(0);
1080
1081         if (body->eadatasize == 0) {
1082                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1083                 GOTO(out, rc = -EPROTO);
1084         }
1085
1086         /* The MDS sent back the EA because we unlinked the last reference
1087          * to this file. Use this EA to unlink the objects on the OST.
1088          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1089          * check it is complete and sensible. */
1090         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1091                                     body->eadatasize, NULL);
1092         LASSERT(eadata != NULL);
1093         if (eadata == NULL) {
1094                 CERROR("Can't unpack MDS EA data\n");
1095                 GOTO(out, rc = -EPROTO);
1096         }
1097
1098         rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
1099         if (rc < 0) {
1100                 CERROR("obd_unpackmd: %d\n", rc);
1101                 GOTO(out, rc);
1102         }
1103         LASSERT(rc >= sizeof(*lsm));
1104
1105         rc = obd_checkmd(ll_i2obdexp(dir), ll_i2mdcexp(dir), lsm);
1106         if (rc)
1107                 GOTO(out_free_memmd, rc);
1108
1109         OBDO_ALLOC(oa);
1110         if (oa == NULL)
1111                 GOTO(out_free_memmd, rc = -ENOMEM);
1112
1113         oa->o_id = lsm->lsm_object_id;
1114         oa->o_mode = body->mode & S_IFMT;
1115         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
1116
1117         if (body->valid & OBD_MD_FLCOOKIE) {
1118                 oa->o_valid |= OBD_MD_FLCOOKIE;
1119                 oti.oti_logcookies =
1120                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1121                                        sizeof(struct llog_cookie) *
1122                                        lsm->lsm_stripe_count);
1123                 if (oti.oti_logcookies == NULL) {
1124                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1125                         body->valid &= ~OBD_MD_FLCOOKIE;
1126                 }
1127         }
1128
1129         rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti, ll_i2mdcexp(dir));
1130         OBDO_FREE(oa);
1131         if (rc)
1132                 CERROR("obd destroy objid "LPX64" error %d\n",
1133                        lsm->lsm_object_id, rc);
1134  out_free_memmd:
1135         obd_free_memmd(ll_i2obdexp(dir), &lsm);
1136  out:
1137         return rc;
1138 }
1139
1140 static int ll_unlink_generic(struct inode * dir, struct qstr *name)
1141 {
1142         struct ptlrpc_request *request = NULL;
1143         struct mdc_op_data op_data = {{0}};
1144         int rc;
1145         ENTRY;
1146
1147         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1148                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1149
1150         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1151                                     name->len, 0, NULL);
1152         if (rc)
1153                 GOTO(out, rc);
1154
1155         ll_get_child_fid(dir, name, &op_data.fid3);
1156         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1157         if (rc)
1158                 GOTO(out, rc);
1159
1160         ll_update_times(request, REPLY_REC_OFF, dir);
1161
1162         rc = ll_objects_destroy(request, dir);
1163         if (rc)
1164                 GOTO(out, rc);
1165         EXIT;
1166  out:
1167         ptlrpc_req_finished(request);
1168         return(rc);
1169 }
1170
1171 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1172                              struct inode *tgt, struct qstr *tgt_name)
1173 {
1174         struct ptlrpc_request *request = NULL;
1175         struct ll_sb_info *sbi = ll_i2sbi(src);
1176         struct mdc_op_data op_data = {{0}};
1177         int err;
1178
1179         ENTRY;
1180         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1181                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1182                src->i_ino, src->i_generation, src, tgt_name->len,
1183                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1184
1185         err = ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0, NULL);
1186         if (err)
1187                 GOTO(out, err);
1188
1189         ll_get_child_fid(src, src_name, &op_data.fid3);
1190         ll_get_child_fid(tgt, tgt_name, &op_data.fid4);
1191         err = mdc_rename(sbi->ll_mdc_exp, &op_data,
1192                          src_name->name, src_name->len,
1193                          tgt_name->name, tgt_name->len, &request);
1194         if (err)
1195                 GOTO(out, err);
1196         ll_update_times(request, REPLY_REC_OFF, src);
1197         ll_update_times(request, REPLY_REC_OFF, tgt);
1198         err = ll_objects_destroy(request, src);
1199         if (err)
1200                 GOTO(out, err);
1201
1202         EXIT;
1203 out:
1204         ptlrpc_req_finished(request);
1205
1206         return(err);
1207 }
1208
1209 #ifdef HAVE_VFS_INTENT_PATCHES
1210 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1211 {
1212         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1213 }
1214 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1215 {
1216         return ll_rename_generic(srcnd->dentry->d_inode, &srcnd->last,
1217                                  tgtnd->dentry->d_inode, &tgtnd->last);
1218 }
1219 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1220 {
1221         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1222                                &tgtnd->last, NULL);
1223 }
1224 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1225 {
1226         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1227 }
1228 static int ll_rmdir_raw(struct nameidata *nd)
1229 {
1230         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1231 }
1232 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1233 {
1234         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1235 }
1236 static int ll_unlink_raw(struct nameidata *nd)
1237 {
1238         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1239 }
1240 #endif
1241
1242 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1243                     ll_dev_t rdev)
1244 {
1245         return ll_mknod_generic(dir, &dchild->d_name, mode,
1246                                 old_encode_dev(rdev), dchild);
1247 }
1248
1249 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1250 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1251 {
1252         return ll_unlink_generic(dir, &dentry->d_name);
1253 }
1254 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1255 {
1256         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1257 }
1258 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1259 {
1260         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1261 }
1262 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1263                       const char *oldname)
1264 {
1265         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1266 }
1267 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1268                    struct dentry *new_dentry)
1269 {
1270         return ll_link_generic(old_dentry->d_inode, dir,
1271                                &new_dentry->d_name, new_dentry);
1272 }
1273 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1274                      struct inode *new_dir, struct dentry *new_dentry)
1275 {
1276         return ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1277                                  &new_dentry->d_name);
1278 }
1279 #endif
1280
1281 struct inode_operations ll_dir_inode_operations = {
1282 #ifdef HAVE_VFS_INTENT_PATCHES
1283         .link_raw           = ll_link_raw,
1284         .unlink_raw         = ll_unlink_raw,
1285         .symlink_raw        = ll_symlink_raw,
1286         .mkdir_raw          = ll_mkdir_raw,
1287         .rmdir_raw          = ll_rmdir_raw,
1288         .mknod_raw          = ll_mknod_raw,
1289         .rename_raw         = ll_rename_raw,
1290         .setattr            = ll_setattr,
1291         .setattr_raw        = ll_setattr_raw,
1292 #endif
1293         .mknod              = ll_mknod,
1294 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1295         .create_it          = ll_create_it,
1296         .lookup_it          = ll_lookup_it,
1297         .revalidate_it      = ll_inode_revalidate_it,
1298 #else
1299         .lookup             = ll_lookup_nd,
1300         .create             = ll_create_nd,
1301         /* We need all these non-raw things for NFSD, to not patch it. */
1302         .unlink             = ll_unlink,
1303         .mkdir              = ll_mkdir,
1304         .rmdir              = ll_rmdir,
1305         .symlink            = ll_symlink,
1306         .link               = ll_link,
1307         .rename             = ll_rename,
1308         .setattr            = ll_setattr,
1309         .getattr            = ll_getattr,
1310 #endif
1311         .permission         = ll_inode_permission,
1312         .setxattr           = ll_setxattr,
1313         .getxattr           = ll_getxattr,
1314         .listxattr          = ll_listxattr,
1315         .removexattr        = ll_removexattr,
1316 };
1317
1318 struct inode_operations ll_special_inode_operations = {
1319 #ifdef HAVE_VFS_INTENT_PATCHES
1320         .setattr_raw    = ll_setattr_raw,
1321 #endif
1322         .setattr        = ll_setattr,
1323 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1324         .getattr        = ll_getattr,
1325 #else
1326         .revalidate_it  = ll_inode_revalidate_it,
1327 #endif
1328         .permission     = ll_inode_permission,
1329         .setxattr       = ll_setxattr,
1330         .getxattr       = ll_getxattr,
1331         .listxattr      = ll_listxattr,
1332         .removexattr    = ll_removexattr,
1333 };