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 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
 102 {
 103         ENTRY;
 104
 105         ldlm_lock_decref(lockh, mode);
 106
 107         RETURN(0);
 108 }
 109
 110 /* Get an inode by inode number (already instantiated by the intent lookup).
 111  * Returns inode or NULL
 112  */
 113 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 114 int ll_set_inode(struct inode *inode, void *opaque)
 115 {
 116         ll_read_inode2(inode, opaque);
 117         return 0;
 118 }
 119
 120 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 121                       struct lustre_md *md)
 122 {
 123         struct inode *inode;
 124
 125         LASSERT(hash != 0);
 126         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 127
 128         if (inode) {
 129                 if (inode->i_state & I_NEW)
 130                         unlock_new_inode(inode);
 131                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
 132                        inode->i_generation, inode);
 133         }
 134
 135         return inode;
 136 }
 137 #else
 138 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 139                       struct lustre_md *md)
 140 {
 141         struct inode *inode;
 142         LASSERT(hash != 0);
 143         inode = iget4(sb, hash, ll_test_inode, md);
 144         if (inode)
 145                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
 146                        inode->i_generation, inode);
 147         return inode;
 148 }
 149 #endif
 150
 151 static void ll_drop_negative_dentry(struct inode *dir)
 152 {
 153         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 154
 155         spin_lock(&dcache_lock);
 156 restart:
 157         list_for_each_entry_safe(dentry, tmp_alias,
 158                                  &dir->i_dentry,d_alias) {
 159                 if (!list_empty(&dentry->d_subdirs)) {
 160                         struct dentry *child;
 161                         list_for_each_entry_safe(child, tmp_subdir,
 162                                                  &dentry->d_subdirs,
 163                                                  d_child) {
 164                                 /* XXX Print some debug here? */
 165                                 if (!child->d_inode)
 166                                 /* Negative dentry. If we were
 167                                    dropping dcache lock, go
 168                                    throught the list again */
 169                                         if (ll_drop_dentry(child))
 170                                                 goto restart;
 171                         }
 172                 }
 173         }
 174         spin_unlock(&dcache_lock);
 175 }
 176
 177 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 178                         void *data, int flag)
 179 {
 180         int rc;
 181         struct lustre_handle lockh;
 182         ENTRY;
 183
 184         switch (flag) {
 185         case LDLM_CB_BLOCKING:
 186                 ldlm_lock2handle(lock, &lockh);
 187                 rc = ldlm_cli_cancel(&lockh);
 188                 if (rc < 0) {
 189                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 190                         RETURN(rc);
 191                 }
 192                 break;
 193         case LDLM_CB_CANCELING: {
 194                 struct inode *inode = ll_inode_from_lock(lock);
 195                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 196
 197                 /* Invalidate all dentries associated with this inode */
 198                 if (inode == NULL)
 199                         break;
 200
 201                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 202                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 203                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 204                         bits &= ~MDS_INODELOCK_LOOKUP;
 205                 if ((bits & MDS_INODELOCK_UPDATE) &&
 206                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 207                         bits &= ~MDS_INODELOCK_UPDATE;
 208                 if ((bits & MDS_INODELOCK_OPEN) &&
 209                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 210                         bits &= ~MDS_INODELOCK_OPEN;
 211
 212                 if (lock->l_resource->lr_name.name[0] != inode->i_ino ||
 213                     lock->l_resource->lr_name.name[1] != inode->i_generation) {
 214                         LDLM_ERROR(lock, "data mismatch with ino %lu/%u (%p)",
 215                                    inode->i_ino, inode->i_generation, inode);
 216                 }
 217
 218                 if (bits & MDS_INODELOCK_OPEN) {
 219                         int flags = 0;
 220                         switch (lock->l_req_mode) {
 221                         case LCK_CW:
 222                                 flags = FMODE_WRITE;
 223                                 break;
 224                         case LCK_PR:
 225                                 flags = FMODE_EXEC;
 226                                 if (!FMODE_EXEC)
 227                                         CERROR("open PR lock without FMODE_EXEC\n");
 228                                 break;
 229                         case LCK_CR:
 230                                 flags = FMODE_READ;
 231                                 break;
 232                         default:
 233                                 CERROR("Unexpected lock mode for OPEN lock "
 234                                        "%d, inode %ld\n", lock->l_req_mode,
 235                                        inode->i_ino);
 236                         }
 237                         ll_mdc_real_close(inode, flags);
 238                 }
 239
 240                 if (bits & MDS_INODELOCK_UPDATE)
 241                         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
 242                                   &(ll_i2info(inode)->lli_flags));
 243
 244                 if (S_ISDIR(inode->i_mode) &&
 245                      (bits & MDS_INODELOCK_UPDATE)) {
 246                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 247                                inode->i_ino);
 248                         truncate_inode_pages(inode->i_mapping, 0);
 249                         ll_drop_negative_dentry(inode);
 250                         inode->i_version++; /* XXX: remove with inode version*/
 251                 }
 252
 253                 if (inode->i_sb->s_root &&
 254                     inode != inode->i_sb->s_root->d_inode &&
 255                     (bits & MDS_INODELOCK_LOOKUP))
 256                         ll_unhash_aliases(inode);
 257                 iput(inode);
 258                 break;
 259         }
 260         default:
 261                 LBUG();
 262         }
 263
 264         RETURN(0);
 265 }
 266
 267 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
 268                          int flags, void *opaque)
 269 {
 270         struct ldlm_res_id res_id =
 271                 { .name = {inode->i_ino, inode->i_generation} };
 272         struct obd_device *obddev = class_conn2obd(conn);
 273         ENTRY;
 274
 275         RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
 276                                       opaque));
 277 }
 278
 279 /* Pack the required supplementary groups into the supplied groups array.
 280  * If we don't need to use the groups from the target inode(s) then we
 281  * instead pack one or more groups from the user's supplementary group
 282  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 283 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 284 {
 285         int i;
 286
 287         LASSERT(i1 != NULL);
 288         LASSERT(suppgids != NULL);
 289
 290         if (in_group_p(i1->i_gid))
 291                 suppgids[0] = i1->i_gid;
 292         else
 293                 suppgids[0] = -1;
 294
 295         if (i2) {
 296                 if (in_group_p(i2->i_gid))
 297                         suppgids[1] = i2->i_gid;
 298                 else
 299                         suppgids[1] = -1;
 300         } else {
 301                 suppgids[1] = -1;
 302         }
 303
 304         for (i = 0; i < current_ngroups; i++) {
 305                 if (suppgids[0] == -1) {
 306                         if (current_groups[i] != suppgids[1])
 307                                 suppgids[0] = current_groups[i];
 308                         continue;
 309                 }
 310                 if (suppgids[1] == -1) {
 311                         if (current_groups[i] != suppgids[0])
 312                                 suppgids[1] = current_groups[i];
 313                         continue;
 314                 }
 315                 break;
 316         }
 317 }
 318
 319 int ll_prepare_mdc_op_data(struct mdc_op_data *op_data, struct inode *i1,
 320                             struct inode *i2, const char *name, int namelen,
 321                             int mode, void *data)
 322 {
 323         LASSERT(i1);
 324
 325         if (namelen > ll_i2sbi(i1)->ll_namelen)
 326                 return -ENAMETOOLONG;
 327         ll_i2gids(op_data->suppgids, i1, i2);
 328         ll_inode2fid(&op_data->fid1, i1);
 329
 330         if (i2)
 331                 ll_inode2fid(&op_data->fid2, i2);
 332         else
 333                 memset(&op_data->fid2, 0, sizeof(op_data->fid2));
 334
 335         op_data->name = name;
 336         op_data->namelen = namelen;
 337         op_data->create_mode = mode;
 338         op_data->mod_time = CURRENT_SECONDS;
 339         op_data->data = data;
 340
 341         return 0;
 342 }
 343
 344 static void ll_d_add(struct dentry *de, struct inode *inode)
 345 {
 346         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 347         /* d_instantiate */
 348         if (!list_empty(&de->d_alias)) {
 349                 spin_unlock(&dcache_lock);
 350                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 351                        de->d_name.len, de->d_name.name, de,
 352                        de->d_alias.next, de->d_alias.prev);
 353                 LBUG();
 354         }
 355         if (inode)
 356                 list_add(&de->d_alias, &inode->i_dentry);
 357         de->d_inode = inode;
 358
 359         /* d_rehash */
 360         if (!d_unhashed(de)) {
 361                 spin_unlock(&dcache_lock);
 362                 CERROR("dentry %.*s %p hash next %p\n",
 363                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 364                 LBUG();
 365         }
 366         d_rehash_cond(de, 0);
 367 }
 368
 369 /* Search "inode"'s alias list for a dentry that has the same name and parent
 370  * as de.  If found, return it.  If not found, return de.
 371  * Lustre can't use d_add_unique because don't unhash aliases for directory
 372  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 373  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 374  */
 375 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 376 {
 377         struct list_head *tmp;
 378         struct dentry *dentry;
 379         struct dentry *last_discon = NULL;
 380
 381         spin_lock(&dcache_lock);
 382         list_for_each(tmp, &inode->i_dentry) {
 383                 dentry = list_entry(tmp, struct dentry, d_alias);
 384
 385                 /* We are called here with 'de' already on the aliases list. */
 386                 if (unlikely(dentry == de)) {
 387                         CERROR("whoops\n");
 388                         continue;
 389                 }
 390
 391                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 392                         LASSERT(last_discon == NULL);
 393                         last_discon = dentry;
 394                         continue;
 395                 }
 396
 397                 if (dentry->d_parent != de->d_parent)
 398                         continue;
 399
 400                 if (dentry->d_name.hash != de->d_name.hash)
 401                         continue;
 402
 403                 if (dentry->d_name.len != de->d_name.len)
 404                         continue;
 405
 406                 if (memcmp(dentry->d_name.name, de->d_name.name,
 407                            de->d_name.len) != 0)
 408                         continue;
 409
 410                 dget_locked(dentry);
 411                 lock_dentry(dentry);
 412                 __d_drop(dentry);
 413 #ifdef DCACHE_LUSTRE_INVALID
 414                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 415 #endif
 416                 unlock_dentry(dentry);
 417                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 418                 spin_unlock(&dcache_lock);
 419                 iput(inode);
 420                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 421                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 422                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 423                 return dentry;
 424         }
 425         if (last_discon) {
 426                  CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 427                         "refc %d\n", last_discon, last_discon->d_inode,
 428                         atomic_read(&last_discon->d_count));
 429                  dget_locked(last_discon);
 430                  spin_unlock(&dcache_lock);
 431                  d_rehash(de);
 432                  d_move(last_discon, de);
 433                  iput(inode);
 434                  return last_discon;
 435         }
 436
 437         ll_d_add(de, inode);
 438
 439         spin_unlock(&dcache_lock);
 440
 441         return de;
 442 }
 443
 444 int lookup_it_finish(struct ptlrpc_request *request, int offset,
 445                      struct lookup_intent *it, void *data)
 446 {
 447         struct it_cb_data *icbd = data;
 448         struct dentry **de = icbd->icbd_childp;
 449         struct inode *parent = icbd->icbd_parent;
 450         struct ll_sb_info *sbi = ll_i2sbi(parent);
 451         struct inode *inode = NULL;
 452         int set = 0, rc;
 453         ENTRY;
 454
 455         lock_dentry(*de);
 456         if (likely((*de)->d_op != &ll_d_ops)) {
 457                 (*de)->d_op = &ll_init_d_ops;
 458                 set = 1;
 459         }
 460         unlock_dentry(*de);
 461
 462         /* NB 1 request reference will be taken away by ll_intent_lock()
 463          * when I return */
 464         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 465                 struct dentry *save = *de;
 466
 467                 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
 468                                    (*de)->d_sb);
 469                 if (rc) {
 470                         if (set) {
 471                                 lock_dentry(*de);
 472                                 if (likely((*de)->d_op == &ll_init_d_ops)) {
 473                                         (*de)->d_op = &ll_fini_d_ops;
 474                                         unlock_dentry(*de);
 475                                         smp_wmb();
 476                                         ll_d_wakeup(*de);
 477                                 } else {
 478                                         unlock_dentry(*de);
 479                                 }
 480                         }
 481                         RETURN(rc);
 482                 }
 483
 484                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 485                        inode, inode->i_ino, inode->i_generation);
 486                 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 487
 488                 /* We used to query real size from OSTs here, but actually
 489                    this is not needed. For stat() calls size would be updated
 490                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 491                    2.4 and
 492                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 493                    Everybody else who needs correct file size would call
 494                    ll_glimpse_size or some equivalent themselves anyway.
 495                    Also see bug 7198. */
 496                 *de = ll_find_alias(inode, *de);
 497                 if (set && *de != save) {
 498                         lock_dentry(save);
 499                         if (likely(save->d_op == &ll_init_d_ops)) {
 500                                 save->d_op = &ll_fini_d_ops;
 501                                 unlock_dentry(save);
 502                                 smp_wmb();
 503                                 ll_d_wakeup(save);
 504                         } else {
 505                                 unlock_dentry(save);
 506                         }
 507                 }
 508         } else {
 509                 /* Check that parent has UPDATE lock. If there is none, we
 510                    cannot afford to hash this dentry (done by ll_d_add) as it
 511                    might get picked up later when UPDATE lock will appear */
 512                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 513                         spin_lock(&dcache_lock);
 514                         ll_d_add(*de, inode);
 515                         spin_unlock(&dcache_lock);
 516                 } else {
 517                         /* We do not want to hash the dentry if don`t have a
 518                          * lock, but if this dentry is later used in d_move,
 519                          * we'd hit uninitialised list head d_hash, so we just
 520                          * do this to init d_hash field but leave dentry
 521                          * unhashed. (bug 10796). */
 522                         d_rehash(*de);
 523                         d_drop(*de);
 524                 }
 525         }
 526
 527         ll_set_dd(*de);
 528
 529         lock_dentry(*de);
 530         if (likely((*de)->d_op == &ll_init_d_ops)) {
 531                 (*de)->d_op = &ll_d_ops;
 532                 unlock_dentry(*de);
 533                 smp_wmb();
 534                 ll_d_wakeup(*de);
 535         } else {
 536                 (*de)->d_op = &ll_d_ops;
 537                 unlock_dentry(*de);
 538         }
 539
 540         RETURN(0);
 541 }
 542
 543 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 544                                    struct lookup_intent *it, int lookup_flags)
 545 {
 546         struct dentry *save = dentry, *retval;
 547         struct mdc_op_data op_data;
 548         struct it_cb_data icbd;
 549         struct ptlrpc_request *req = NULL;
 550         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 551         int rc;
 552         ENTRY;
 553
 554         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 555                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 556                parent->i_generation, parent, LL_IT2STR(it));
 557
 558         if (d_mountpoint(dentry))
 559                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 560
 561         ll_frob_intent(&it, &lookup_it);
 562
 563         /* As do_lookup is called before follow_mount, root dentry may be left
 564          * not valid, revalidate it here. */
 565         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 566             (it->it_op & (IT_OPEN | IT_CREAT))) {
 567                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 568                 if (rc)
 569                         RETURN(ERR_PTR(rc));
 570         }
 571
 572         if (it->it_op == IT_GETATTR) {
 573                 rc = ll_statahead_enter(parent, &dentry, 1);
 574                 if (rc >= 0) {
 575                         ll_statahead_exit(dentry, rc);
 576                         if (rc == 1)
 577                                 RETURN(retval = dentry);
 578                 }
 579         }
 580
 581         icbd.icbd_parent = parent;
 582         icbd.icbd_childp = &dentry;
 583
 584         rc = ll_prepare_mdc_op_data(&op_data, parent, NULL, dentry->d_name.name,
 585                                     dentry->d_name.len, lookup_flags, NULL);
 586         if (rc)
 587                 RETURN(ERR_PTR(rc));
 588
 589         it->it_create_mode &= ~current->fs->umask;
 590
 591         rc = mdc_intent_lock(ll_i2mdcexp(parent), &op_data, NULL, 0, it,
 592                              lookup_flags, &req, ll_mdc_blocking_ast, 0);
 593
 594         if (rc < 0)
 595                 GOTO(out, retval = ERR_PTR(rc));
 596
 597         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 598         if (rc != 0) {
 599                 ll_intent_release(it);
 600                 GOTO(out, retval = ERR_PTR(rc));
 601         }
 602
 603         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 604             !S_ISREG(dentry->d_inode->i_mode) &&
 605             !S_ISDIR(dentry->d_inode->i_mode)) {
 606                 ll_release_openhandle(dentry, it);
 607         }
 608         ll_lookup_finish_locks(it, dentry);
 609
 610         if (dentry == save)
 611                 GOTO(out, retval = NULL);
 612         else
 613                 GOTO(out, retval = dentry);
 614  out:
 615         if (req)
 616                 ptlrpc_req_finished(req);
 617         return retval;
 618 }
 619
 620 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 621 #ifdef HAVE_VFS_INTENT_PATCHES
 622 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 623                                    struct nameidata *nd)
 624 {
 625         struct dentry *de;
 626         ENTRY;
 627
 628         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 629                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 630         else
 631                 de = ll_lookup_it(parent, dentry, NULL, 0);
 632
 633         RETURN(de);
 634 }
 635 #else
 636 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 637                                         int lookup_flags)
 638 {
 639         struct lookup_intent *it;
 640
 641         OBD_ALLOC(it, sizeof(*it));
 642         if (!it)
 643                 return ERR_PTR(-ENOMEM);
 644
 645         if (lookup_flags & LOOKUP_OPEN) {
 646                 it->it_op = IT_OPEN;
 647                 if (lookup_flags & LOOKUP_CREATE)
 648                         it->it_op |= IT_CREAT;
 649                 it->it_create_mode = oit->create_mode;
 650                 it->it_flags = oit->flags;
 651         } else {
 652                 it->it_op = IT_GETATTR;
 653         }
 654
 655 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 656                 /* Since there is no way to pass our intent to ll_file_open,
 657                  * just check the file is there. Actual open will be done
 658                  * in ll_file_open */
 659                 if (it->it_op & IT_OPEN)
 660                         it->it_op = IT_LOOKUP;
 661 #endif
 662
 663         return it;
 664 }
 665
 666 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 667                                    struct nameidata *nd)
 668 {
 669         struct dentry *de;
 670         ENTRY;
 671
 672         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 673                 struct lookup_intent *it;
 674
 675 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 676                 /* Did we came here from failed revalidate just to propagate
 677                  * its error? */
 678                 if (nd->flags & LOOKUP_OPEN)
 679                         if (IS_ERR(nd->intent.open.file))
 680                                 RETURN((struct dentry *)nd->intent.open.file);
 681 #endif
 682
 683                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 684                         it = ll_d2d(dentry)->lld_it;
 685                         ll_d2d(dentry)->lld_it = NULL;
 686                 } else {
 687                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 688                         if (IS_ERR(it))
 689                                 RETURN((struct dentry *)it);
 690                 }
 691
 692                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 693                 if (de)
 694                         dentry = de;
 695                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 696                         if (dentry->d_inode &&
 697                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 698 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 699                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 700                                         // We cannot call open here as it would
 701                                         // deadlock.
 702                                         ptlrpc_req_finished(
 703                                                        (struct ptlrpc_request *)
 704                                                           it->d.lustre.it_data);
 705                                 } else {
 706                                         struct file *filp;
 707                                         nd->intent.open.file->private_data = it;
 708                                         filp =lookup_instantiate_filp(nd,dentry,
 709                                                                       NULL);
 710 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 711 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 712  * nd->intent.open.file for error, so we need to return it as lookup's result
 713  * instead */
 714                                         if (IS_ERR(filp)) {
 715                                                 if (de)
 716                                                         dput(de);
 717                                                 de = (struct dentry *) filp;
 718                                         }
 719 #endif
 720
 721                                 }
 722 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 723                                 /* Release open handle as we have no way to
 724                                  * pass it to ll_file_open */
 725                                 ll_release_openhandle(dentry, it);
 726 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 727                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 728                                 // XXX This can only reliably work on assumption
 729                                 // that there are NO hashed negative dentries.
 730                                 ll_d2d(dentry)->lld_it = it;
 731                                 it = NULL; /* Will be freed in ll_create_nd */
 732                                 /* We absolutely depend on ll_create_nd to be
 733                                  * called to not leak this intent and possible
 734                                  * data attached to it */
 735                         }
 736                 }
 737
 738                 if (it) {
 739                         ll_intent_release(it);
 740                         OBD_FREE(it, sizeof(*it));
 741                 }
 742         } else {
 743                 de = ll_lookup_it(parent, dentry, NULL, 0);
 744         }
 745
 746         RETURN(de);
 747 }
 748 #endif
 749 #endif
 750
 751 /* We depend on "mode" being set with the proper file type/umask by now */
 752 static struct inode *ll_create_node(struct inode *dir, const char *name,
 753                                     int namelen, const void *data, int datalen,
 754                                     int mode, __u64 extra,
 755                                     struct lookup_intent *it)
 756 {
 757         struct inode *inode = NULL;
 758         struct ptlrpc_request *request = NULL;
 759         struct ll_sb_info *sbi = ll_i2sbi(dir);
 760         int rc;
 761         ENTRY;
 762
 763         LASSERT(it && it->d.lustre.it_disposition);
 764
 765         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 766         request = it->d.lustre.it_data;
 767         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 768         rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, DLM_REPLY_REC_OFF,
 769                            dir->i_sb);
 770         if (rc)
 771                 GOTO(out, inode = ERR_PTR(rc));
 772
 773         LASSERT(list_empty(&inode->i_dentry));
 774
 775         /* We asked for a lock on the directory, but were granted a
 776          * lock on the inode.  Since we finally have an inode pointer,
 777          * stuff it in the lock. */
 778         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 779                inode, inode->i_ino, inode->i_generation);
 780         mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 781         EXIT;
 782  out:
 783         ptlrpc_req_finished(request);
 784         return inode;
 785 }
 786
 787 /*
 788  * By the time this is called, we already have created the directory cache
 789  * entry for the new file, but it is so far negative - it has no inode.
 790  *
 791  * We defer creating the OBD object(s) until open, to keep the intent and
 792  * non-intent code paths similar, and also because we do not have the MDS
 793  * inode number before calling ll_create_node() (which is needed for LOV),
 794  * so we would need to do yet another RPC to the MDS to store the LOV EA
 795  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 796  * lmm_size in datalen (the MDS still has code which will handle that).
 797  *
 798  * If the create succeeds, we fill in the inode information
 799  * with d_instantiate().
 800  */
 801 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 802                         struct lookup_intent *it)
 803 {
 804         struct inode *inode;
 805         struct ptlrpc_request *request = it->d.lustre.it_data;
 806         int rc = 0;
 807         ENTRY;
 808
 809         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 810                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 811                dir->i_generation, dir, LL_IT2STR(it));
 812
 813         rc = it_open_error(DISP_OPEN_CREATE, it);
 814         if (rc)
 815                 RETURN(rc);
 816
 817         mdc_store_inode_generation(request, DLM_INTENT_REC_OFF,
 818                                    DLM_REPLY_REC_OFF);
 819         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 820                                NULL, 0, mode, 0, it);
 821         if (IS_ERR(inode)) {
 822                 RETURN(PTR_ERR(inode));
 823         }
 824
 825         d_instantiate(dentry, inode);
 826         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 827          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 828          * successful create. Hash it here. */
 829         spin_lock(&dcache_lock);
 830         if (d_unhashed(dentry))
 831                 d_rehash_cond(dentry, 0);
 832         spin_unlock(&dcache_lock);
 833         RETURN(0);
 834 }
 835
 836 static void ll_update_times(struct ptlrpc_request *request, int offset,
 837                             struct inode *inode)
 838 {
 839         struct mds_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 840                                                sizeof(*body));
 841         LASSERT(body);
 842
 843         /* mtime is always updated with ctime, but can be set in past.
 844            As write and utime(2) may happen within 1 second, and utime's
 845            mtime has a priority over write's one, so take mtime from mds
 846            for the same ctimes. */
 847         if (body->valid & OBD_MD_FLCTIME &&
 848             body->ctime >= LTIME_S(inode->i_ctime)) {
 849                 LTIME_S(inode->i_ctime) = body->ctime;
 850
 851                 if (body->valid & OBD_MD_FLMTIME) {
 852                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 853                                "to "LPU64"\n", inode->i_ino,
 854                                LTIME_S(inode->i_mtime), body->mtime);
 855                         LTIME_S(inode->i_mtime) = body->mtime;
 856                 }
 857         }
 858 }
 859
 860 static int ll_new_node(struct inode *dir, struct qstr *name,
 861                        const char *tgt, int mode,
 862                        int rdev, struct dentry *dchild)
 863 {
 864         struct ptlrpc_request *request = NULL;
 865         struct inode *inode = NULL;
 866         struct ll_sb_info *sbi = ll_i2sbi(dir);
 867         struct mdc_op_data op_data;
 868         int tgt_len = 0;
 869         int err;
 870
 871         ENTRY;
 872         if (unlikely(tgt != NULL))
 873                 tgt_len = strlen(tgt)+1;
 874
 875         err = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
 876                                      name->len, 0, NULL);
 877         if (err)
 878                 GOTO(err_exit, err);
 879
 880         err = mdc_create(sbi->ll_mdc_exp, &op_data, tgt, tgt_len,
 881                          mode, current->fsuid, current->fsgid,
 882                          current->cap_effective, rdev, &request);
 883         if (err)
 884                 GOTO(err_exit, err);
 885
 886         ll_update_times(request, REPLY_REC_OFF, dir);
 887
 888         if (dchild) {
 889                 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request,
 890                                     REPLY_REC_OFF, dchild->d_sb);
 891                 if (err)
 892                      GOTO(err_exit, err);
 893
 894                 d_drop(dchild);
 895                 d_instantiate(dchild, inode);
 896                 EXIT;
 897         }
 898 err_exit:
 899         ptlrpc_req_finished(request);
 900
 901         return err;
 902 }
 903
 904
 905 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 906                             unsigned rdev, struct dentry *dchild)
 907 {
 908         int err;
 909         ENTRY;
 910
 911         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 912                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 913                mode, rdev);
 914
 915         mode &= ~current->fs->umask;
 916
 917         switch (mode & S_IFMT) {
 918         case 0:
 919                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 920         case S_IFREG:
 921         case S_IFCHR:
 922         case S_IFBLK:
 923         case S_IFIFO:
 924         case S_IFSOCK:
 925                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild);
 926                 break;
 927         case S_IFDIR:
 928                 err = -EPERM;
 929                 break;
 930         default:
 931                 err = -EINVAL;
 932         }
 933         RETURN(err);
 934 }
 935
 936 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 937 #ifndef HAVE_VFS_INTENT_PATCHES
 938 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 939 {
 940         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 941         int rc;
 942
 943         if (!it)
 944                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 945
 946         ll_d2d(dentry)->lld_it = NULL;
 947
 948         /* Was there an error? Propagate it! */
 949         if (it->d.lustre.it_status) {
 950                 rc = it->d.lustre.it_status;
 951                 goto out;
 952         }
 953
 954         rc = ll_create_it(dir, dentry, mode, it);
 955 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 956         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 957                 nd->intent.open.file->private_data = it;
 958                 lookup_instantiate_filp(nd, dentry, NULL);
 959         }
 960 #else
 961         ll_release_openhandle(dentry,it);
 962 #endif
 963
 964 out:
 965         ll_intent_release(it);
 966         OBD_FREE(it, sizeof(*it));
 967
 968         return rc;
 969 }
 970 #else
 971 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 972 {
 973
 974         if (!nd || !nd->intent.d.lustre.it_disposition)
 975                 /* No saved request? Just mknod the file */
 976                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 977
 978         return ll_create_it(dir, dentry, mode, &nd->intent);
 979 }
 980 #endif
 981 #endif
 982
 983 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 984                               const char *tgt, struct dentry *dchild)
 985 {
 986         int err;
 987         ENTRY;
 988
 989         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 990                name->len, name->name, dir->i_ino, dir->i_generation,
 991                dir, 3000, tgt);
 992
 993         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 994                           0, dchild);
 995         RETURN(err);
 996 }
 997
 998 static int ll_link_generic(struct inode *src,  struct inode *dir,
 999                            struct qstr *name, struct dentry *dchild)
1000 {
1001         struct ptlrpc_request *request = NULL;
1002         struct mdc_op_data op_data;
1003         int err;
1004         struct ll_sb_info *sbi = ll_i2sbi(dir);
1005
1006         ENTRY;
1007         CDEBUG(D_VFSTRACE,
1008                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
1009                src->i_ino, src->i_generation, src, dir->i_ino,
1010                dir->i_generation, dir, name->len, name->name);
1011
1012         err = ll_prepare_mdc_op_data(&op_data, src, dir, name->name,
1013                                      name->len, 0, NULL);
1014         if (err)
1015                 GOTO(out, err);
1016         err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
1017         if (err)
1018                GOTO(out, err);
1019
1020         if (dchild) {
1021                 d_drop(dchild);
1022         }
1023         ll_update_times(request, REPLY_REC_OFF, dir);
1024
1025         EXIT;
1026 out:
1027         ptlrpc_req_finished(request);
1028         RETURN(err);
1029 }
1030
1031 static int ll_mkdir_generic(struct inode *dir, struct qstr *name, int mode,
1032                             struct dentry *dchild)
1033
1034 {
1035         int err;
1036
1037         ENTRY;
1038         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1039                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1040
1041         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1042         err = ll_new_node(dir, name, NULL, mode, 0, dchild);
1043
1044         RETURN(err);
1045 }
1046
1047 /* Try to find the child dentry by its name.
1048    If found, put the result fid into @fid. */
1049 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1050                              struct ll_fid *fid)
1051 {
1052         struct dentry *parent, *child;
1053
1054         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1055         child = d_lookup(parent, name);
1056         if (child) {
1057                 if (child->d_inode)
1058                         ll_inode2fid(fid, child->d_inode);
1059                 dput(child);
1060         }
1061 }
1062
1063 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1064                             struct qstr *name)
1065 {
1066         struct ptlrpc_request *request = NULL;
1067         struct mdc_op_data op_data = {{0}};
1068         struct dentry *dentry;
1069         int rc;
1070         ENTRY;
1071         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1072                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1073
1074         /* Check if we have something mounted at the dir we are going to delete
1075          * In such a case there would always be dentry present. */
1076         if (dparent) {
1077                 dentry = d_lookup(dparent, name);
1078                 if (dentry) {
1079                         int mounted = d_mountpoint(dentry);
1080                         dput(dentry);
1081                         if (mounted)
1082                                 GOTO(out, rc = -EBUSY);
1083                 }
1084         }
1085
1086         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1087                                     name->len, S_IFDIR, NULL);
1088         if (rc)
1089                 GOTO(out, rc);
1090
1091         ll_get_child_fid(dir, name, &op_data.fid3);
1092         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1093         if (rc)
1094                 GOTO(out, rc);
1095         ll_update_times(request, REPLY_REC_OFF, dir);
1096
1097         EXIT;
1098 out:
1099         ptlrpc_req_finished(request);
1100         return(rc);
1101 }
1102
1103 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1104 {
1105         struct mds_body *body;
1106         struct lov_mds_md *eadata;
1107         struct lov_stripe_md *lsm = NULL;
1108         struct obd_trans_info oti = { 0 };
1109         struct obdo *oa;
1110         int rc;
1111         ENTRY;
1112
1113         /* req is swabbed so this is safe */
1114         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1115
1116         if (!(body->valid & OBD_MD_FLEASIZE))
1117                 RETURN(0);
1118
1119         if (body->eadatasize == 0) {
1120                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1121                 GOTO(out, rc = -EPROTO);
1122         }
1123
1124         /* The MDS sent back the EA because we unlinked the last reference
1125          * to this file. Use this EA to unlink the objects on the OST.
1126          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1127          * check it is complete and sensible. */
1128         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1129                                     body->eadatasize, NULL);
1130         LASSERT(eadata != NULL);
1131         if (eadata == NULL) {
1132                 CERROR("Can't unpack MDS EA data\n");
1133                 GOTO(out, rc = -EPROTO);
1134         }
1135
1136         rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
1137         if (rc < 0) {
1138                 CERROR("obd_unpackmd: %d\n", rc);
1139                 GOTO(out, rc);
1140         }
1141         LASSERT(rc >= sizeof(*lsm));
1142
1143         rc = obd_checkmd(ll_i2obdexp(dir), ll_i2mdcexp(dir), lsm);
1144         if (rc)
1145                 GOTO(out_free_memmd, rc);
1146
1147         OBDO_ALLOC(oa);
1148         if (oa == NULL)
1149                 GOTO(out_free_memmd, rc = -ENOMEM);
1150
1151         oa->o_id = lsm->lsm_object_id;
1152         oa->o_mode = body->mode & S_IFMT;
1153         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
1154
1155         if (body->valid & OBD_MD_FLCOOKIE) {
1156                 oa->o_valid |= OBD_MD_FLCOOKIE;
1157                 oti.oti_logcookies =
1158                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1159                                        sizeof(struct llog_cookie) *
1160                                        lsm->lsm_stripe_count);
1161                 if (oti.oti_logcookies == NULL) {
1162                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1163                         body->valid &= ~OBD_MD_FLCOOKIE;
1164                 }
1165         }
1166
1167         rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti, ll_i2mdcexp(dir));
1168         OBDO_FREE(oa);
1169         if (rc)
1170                 CERROR("obd destroy objid "LPX64" error %d\n",
1171                        lsm->lsm_object_id, rc);
1172  out_free_memmd:
1173         obd_free_memmd(ll_i2obdexp(dir), &lsm);
1174  out:
1175         return rc;
1176 }
1177
1178 static int ll_unlink_generic(struct inode * dir, struct qstr *name)
1179 {
1180         struct ptlrpc_request *request = NULL;
1181         struct mdc_op_data op_data = {{0}};
1182         int rc;
1183         ENTRY;
1184
1185         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1186                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1187
1188         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1189                                     name->len, 0, NULL);
1190         if (rc)
1191                 GOTO(out, rc);
1192
1193         ll_get_child_fid(dir, name, &op_data.fid3);
1194         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1195         if (rc)
1196                 GOTO(out, rc);
1197
1198         ll_update_times(request, REPLY_REC_OFF, dir);
1199
1200         rc = ll_objects_destroy(request, dir);
1201         if (rc)
1202                 GOTO(out, rc);
1203         EXIT;
1204  out:
1205         ptlrpc_req_finished(request);
1206         return(rc);
1207 }
1208
1209 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1210                              struct inode *tgt, struct qstr *tgt_name)
1211 {
1212         struct ptlrpc_request *request = NULL;
1213         struct ll_sb_info *sbi = ll_i2sbi(src);
1214         struct mdc_op_data op_data = {{0}};
1215         int err;
1216
1217         ENTRY;
1218         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1219                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1220                src->i_ino, src->i_generation, src, tgt_name->len,
1221                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1222
1223         err = ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0, NULL);
1224         if (err)
1225                 GOTO(out, err);
1226
1227         ll_get_child_fid(src, src_name, &op_data.fid3);
1228         ll_get_child_fid(tgt, tgt_name, &op_data.fid4);
1229         err = mdc_rename(sbi->ll_mdc_exp, &op_data,
1230                          src_name->name, src_name->len,
1231                          tgt_name->name, tgt_name->len, &request);
1232         if (err)
1233                 GOTO(out, err);
1234         ll_update_times(request, REPLY_REC_OFF, src);
1235         ll_update_times(request, REPLY_REC_OFF, tgt);
1236         err = ll_objects_destroy(request, src);
1237         if (err)
1238                 GOTO(out, err);
1239
1240         EXIT;
1241 out:
1242         ptlrpc_req_finished(request);
1243
1244         return(err);
1245 }
1246
1247 #ifdef HAVE_VFS_INTENT_PATCHES
1248 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1249 {
1250         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1251 }
1252 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1253 {
1254         return ll_rename_generic(srcnd->dentry->d_inode, &srcnd->last,
1255                                  tgtnd->dentry->d_inode, &tgtnd->last);
1256 }
1257 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1258 {
1259         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1260                                &tgtnd->last, NULL);
1261 }
1262 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1263 {
1264         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1265 }
1266 static int ll_rmdir_raw(struct nameidata *nd)
1267 {
1268         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1269 }
1270 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1271 {
1272         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1273 }
1274 static int ll_unlink_raw(struct nameidata *nd)
1275 {
1276         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1277 }
1278 #endif
1279
1280 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1281                     ll_dev_t rdev)
1282 {
1283         return ll_mknod_generic(dir, &dchild->d_name, mode,
1284                                 old_encode_dev(rdev), dchild);
1285 }
1286
1287 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1288 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1289 {
1290         return ll_unlink_generic(dir, &dentry->d_name);
1291 }
1292 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1293 {
1294         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1295 }
1296 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1297 {
1298         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1299 }
1300 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1301                       const char *oldname)
1302 {
1303         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1304 }
1305 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1306                    struct dentry *new_dentry)
1307 {
1308         return ll_link_generic(old_dentry->d_inode, dir,
1309                                &new_dentry->d_name, new_dentry);
1310 }
1311 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1312                      struct inode *new_dir, struct dentry *new_dentry)
1313 {
1314         return ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1315                                  &new_dentry->d_name);
1316 }
1317 #endif
1318
1319 struct inode_operations ll_dir_inode_operations = {
1320 #ifdef HAVE_VFS_INTENT_PATCHES
1321         .link_raw           = ll_link_raw,
1322         .unlink_raw         = ll_unlink_raw,
1323         .symlink_raw        = ll_symlink_raw,
1324         .mkdir_raw          = ll_mkdir_raw,
1325         .rmdir_raw          = ll_rmdir_raw,
1326         .mknod_raw          = ll_mknod_raw,
1327         .rename_raw         = ll_rename_raw,
1328         .setattr            = ll_setattr,
1329         .setattr_raw        = ll_setattr_raw,
1330 #endif
1331         .mknod              = ll_mknod,
1332 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1333         .create_it          = ll_create_it,
1334         .lookup_it          = ll_lookup_it,
1335         .revalidate_it      = ll_inode_revalidate_it,
1336 #else
1337         .lookup             = ll_lookup_nd,
1338         .create             = ll_create_nd,
1339         /* We need all these non-raw things for NFSD, to not patch it. */
1340         .unlink             = ll_unlink,
1341         .mkdir              = ll_mkdir,
1342         .rmdir              = ll_rmdir,
1343         .symlink            = ll_symlink,
1344         .link               = ll_link,
1345         .rename             = ll_rename,
1346         .setattr            = ll_setattr,
1347         .getattr            = ll_getattr,
1348 #endif
1349         .permission         = ll_inode_permission,
1350         .setxattr           = ll_setxattr,
1351         .getxattr           = ll_getxattr,
1352         .listxattr          = ll_listxattr,
1353         .removexattr        = ll_removexattr,
1354 };
1355
1356 struct inode_operations ll_special_inode_operations = {
1357 #ifdef HAVE_VFS_INTENT_PATCHES
1358         .setattr_raw    = ll_setattr_raw,
1359 #endif
1360         .setattr        = ll_setattr,
1361 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1362         .getattr        = ll_getattr,
1363 #else
1364         .revalidate_it  = ll_inode_revalidate_it,
1365 #endif
1366         .permission     = ll_inode_permission,
1367         .setxattr       = ll_setxattr,
1368         .getxattr       = ll_getxattr,
1369         .listxattr      = ll_listxattr,
1370         .removexattr    = ll_removexattr,
1371 };