lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/fs.h>
  23 #include <linux/sched.h>
  24 #include <linux/mm.h>
  25 #include <linux/smp_lock.h>
  26 #include <linux/quotaops.h>
  27 #include <linux/highmem.h>
  28 #include <linux/pagemap.h>
  29
  30 #define DEBUG_SUBSYSTEM S_LLITE
  31
  32 #include <obd_support.h>
  33 #include <lustre_fid.h>
  34 #include <lustre_lite.h>
  35 #include <lustre_dlm.h>
  36 #include <lustre_ver.h>
  37 #include <lustre_mdc.h>
  38 #include "llite_internal.h"
  39
  40 /*
  41  * Check if we have something mounted at the named dchild.
  42  * In such a case there would always be dentry present.
  43  */
  44 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  45                            struct qstr *name)
  46 {
  47         int mounted = 0;
  48
  49         if (unlikely(dchild)) {
  50                 mounted = d_mountpoint(dchild);
  51         } else if (dparent) {
  52                 dchild = d_lookup(dparent, name);
  53                 if (dchild) {
  54                         mounted = d_mountpoint(dchild);
  55                         dput(dchild);
  56                 }
  57         }
  58         return mounted;
  59 }
  60
  61 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  62 {
  63         ENTRY;
  64
  65         ldlm_lock_decref(lockh, mode);
  66
  67         RETURN(0);
  68 }
  69
  70
  71 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  72 static int ll_test_inode(struct inode *inode, void *opaque)
  73 {
  74         struct ll_inode_info *lli = ll_i2info(inode);
  75         struct lustre_md     *md = opaque;
  76
  77         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  78                 CERROR("MDS body missing FID\n");
  79                 return 0;
  80         }
  81
  82         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
  83                 return 0;
  84
  85         return 1;
  86 }
  87
  88 static int ll_set_inode(struct inode *inode, void *opaque)
  89 {
  90         return 0;
  91 }
  92
  93
  94 /*
  95  * Get an inode by inode number (already instantiated by the intent lookup).
  96  * Returns inode or NULL
  97  */
  98 struct inode *ll_iget(struct super_block *sb, ino_t hash,
  99                       struct lustre_md *md)
 100 {
 101         struct ll_inode_info *lli;
 102         struct inode         *inode;
 103         ENTRY;
 104
 105         LASSERT(hash != 0);
 106         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 107
 108         if (inode) {
 109                 lli = ll_i2info(inode);
 110                 if (inode->i_state & I_NEW) {
 111                         ll_read_inode2(inode, md);
 112                         unlock_new_inode(inode);
 113                 } else {
 114                         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 115                                 ll_update_inode(inode, md);
 116                 }
 117                 CDEBUG(D_VFSTRACE, "got inode: %lu/%u(%p) for "DFID"\n",
 118                        inode->i_ino, inode->i_generation, inode,
 119                        PFID(&lli->lli_fid));
 120         }
 121
 122         RETURN(inode);
 123 }
 124
 125 static void ll_drop_negative_dentry(struct inode *dir)
 126 {
 127         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 128
 129         spin_lock(&dcache_lock);
 130 restart:
 131         list_for_each_entry_safe(dentry, tmp_alias,
 132                                  &dir->i_dentry,d_alias) {
 133                 if (!list_empty(&dentry->d_subdirs)) {
 134                         struct dentry *child;
 135                         list_for_each_entry_safe(child, tmp_subdir,
 136                                                  &dentry->d_subdirs,
 137                                                  d_child) {
 138                                 /* XXX Print some debug here? */
 139                                 if (!child->d_inode)
 140                                 /* Negative dentry. If we were
 141                                    dropping dcache lock, go
 142                                    throught the list again */
 143                                         if (ll_drop_dentry(child))
 144                                                 goto restart;
 145                         }
 146                 }
 147         }
 148         spin_unlock(&dcache_lock);
 149 }
 150
 151
 152 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 153                        void *data, int flag)
 154 {
 155         int rc;
 156         struct lustre_handle lockh;
 157         ENTRY;
 158
 159         switch (flag) {
 160         case LDLM_CB_BLOCKING:
 161                 ldlm_lock2handle(lock, &lockh);
 162                 rc = ldlm_cli_cancel(&lockh);
 163                 if (rc < 0) {
 164                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 165                         RETURN(rc);
 166                 }
 167                 break;
 168         case LDLM_CB_CANCELING: {
 169                 struct inode *inode = ll_inode_from_lock(lock);
 170                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 171                 struct lu_fid *fid;
 172
 173                 /* Invalidate all dentries associated with this inode */
 174                 if (inode == NULL)
 175                         break;
 176
 177                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 178                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 179                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 180                         bits &= ~MDS_INODELOCK_LOOKUP;
 181                 if ((bits & MDS_INODELOCK_UPDATE) &&
 182                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 183                         bits &= ~MDS_INODELOCK_UPDATE;
 184                 if ((bits & MDS_INODELOCK_OPEN) &&
 185                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 186                         bits &= ~MDS_INODELOCK_OPEN;
 187
 188                 fid = ll_inode2fid(inode);
 189                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 190                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 191                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 192                         LDLM_ERROR(lock, "data mismatch with object "
 193                                    DFID" (%p)", PFID(fid), inode);
 194                 }
 195
 196                 if (bits & MDS_INODELOCK_OPEN) {
 197                         int flags = 0;
 198                         switch (lock->l_req_mode) {
 199                         case LCK_CW:
 200                                 flags = FMODE_WRITE;
 201                                 break;
 202                         case LCK_PR:
 203                                 flags = FMODE_EXEC;
 204                                 break;
 205                         case LCK_CR:
 206                                 flags = FMODE_READ;
 207                                 break;
 208                         default:
 209                                 CERROR("Unexpected lock mode for OPEN lock "
 210                                        "%d, inode %ld\n", lock->l_req_mode,
 211                                        inode->i_ino);
 212                         }
 213                         ll_md_real_close(inode, flags);
 214                 }
 215
 216                 if (bits & MDS_INODELOCK_UPDATE)
 217                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 218
 219                 if (S_ISDIR(inode->i_mode) &&
 220                      (bits & MDS_INODELOCK_UPDATE)) {
 221                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 222                                inode->i_ino);
 223                         truncate_inode_pages(inode->i_mapping, 0);
 224                         ll_drop_negative_dentry(inode);
 225                 }
 226
 227                 if (inode->i_sb->s_root &&
 228                     inode != inode->i_sb->s_root->d_inode &&
 229                     (bits & MDS_INODELOCK_LOOKUP))
 230                         ll_unhash_aliases(inode);
 231                 iput(inode);
 232                 break;
 233         }
 234         default:
 235                 LBUG();
 236         }
 237
 238         RETURN(0);
 239 }
 240
 241 __u32 ll_i2suppgid(struct inode *i)
 242 {
 243         if (in_group_p(i->i_gid))
 244                 return (__u32)i->i_gid;
 245         else
 246                 return (__u32)(-1);
 247 }
 248
 249 /* Pack the required supplementary groups into the supplied groups array.
 250  * If we don't need to use the groups from the target inode(s) then we
 251  * instead pack one or more groups from the user's supplementary group
 252  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 253 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 254 {
 255 #if 0
 256         int i;
 257 #endif
 258
 259         LASSERT(i1 != NULL);
 260         LASSERT(suppgids != NULL);
 261
 262         suppgids[0] = ll_i2suppgid(i1);
 263
 264         if (i2)
 265                 suppgids[1] = ll_i2suppgid(i2);
 266                 else
 267                         suppgids[1] = -1;
 268
 269 #if 0
 270         for (i = 0; i < current_ngroups; i++) {
 271                 if (suppgids[0] == -1) {
 272                         if (current_groups[i] != suppgids[1])
 273                                 suppgids[0] = current_groups[i];
 274                         continue;
 275                 }
 276                 if (suppgids[1] == -1) {
 277                         if (current_groups[i] != suppgids[0])
 278                                 suppgids[1] = current_groups[i];
 279                         continue;
 280                 }
 281                 break;
 282         }
 283 #endif
 284 }
 285
 286 static void ll_d_add(struct dentry *de, struct inode *inode)
 287 {
 288         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 289         /* d_instantiate */
 290         if (!list_empty(&de->d_alias)) {
 291                 spin_unlock(&dcache_lock);
 292                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 293                        de->d_name.len, de->d_name.name, de,
 294                        de->d_alias.next, de->d_alias.prev);
 295                 LBUG();
 296         }
 297         if (inode)
 298                 list_add(&de->d_alias, &inode->i_dentry);
 299         de->d_inode = inode;
 300
 301         /* d_rehash */
 302         if (!d_unhashed(de)) {
 303                 spin_unlock(&dcache_lock);
 304                 CERROR("dentry %.*s %p hash next %p\n",
 305                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 306                 LBUG();
 307         }
 308         d_rehash_cond(de, 0);
 309 }
 310
 311 /* Search "inode"'s alias list for a dentry that has the same name and parent
 312  * as de.  If found, return it.  If not found, return de.
 313  * Lustre can't use d_add_unique because don't unhash aliases for directory
 314  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 315  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 316  */
 317 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 318 {
 319         struct list_head *tmp;
 320         struct dentry *dentry;
 321         struct dentry *last_discon = NULL;
 322
 323         spin_lock(&dcache_lock);
 324         list_for_each(tmp, &inode->i_dentry) {
 325                 dentry = list_entry(tmp, struct dentry, d_alias);
 326
 327                 /* We are called here with 'de' already on the aliases list. */
 328                 if (unlikely(dentry == de)) {
 329                         CERROR("whoops\n");
 330                         continue;
 331                 }
 332
 333                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 334                         LASSERT(last_discon == NULL);
 335                         last_discon = dentry;
 336                         continue;
 337                 }
 338
 339                 if (dentry->d_parent != de->d_parent)
 340                         continue;
 341
 342                 if (dentry->d_name.hash != de->d_name.hash)
 343                         continue;
 344
 345                 if (dentry->d_name.len != de->d_name.len)
 346                         continue;
 347
 348                 if (memcmp(dentry->d_name.name, de->d_name.name,
 349                            de->d_name.len) != 0)
 350                         continue;
 351
 352                 dget_locked(dentry);
 353                 lock_dentry(dentry);
 354                 __d_drop(dentry);
 355 #ifdef DCACHE_LUSTRE_INVALID
 356                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 357 #endif
 358                 unlock_dentry(dentry);
 359                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 360                 spin_unlock(&dcache_lock);
 361                 iput(inode);
 362                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 363                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 364                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 365                 return dentry;
 366         }
 367
 368         if (last_discon) {
 369                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 370                         "refc %d\n", last_discon, last_discon->d_inode,
 371                         atomic_read(&last_discon->d_count));
 372                 dget_locked(last_discon);
 373                 spin_unlock(&dcache_lock);
 374                 d_rehash(de);
 375                 d_move(last_discon, de);
 376                 iput(inode);
 377                 return last_discon;
 378         }
 379
 380         ll_d_add(de, inode);
 381
 382         spin_unlock(&dcache_lock);
 383
 384         return de;
 385 }
 386
 387 static inline void ll_dop_init(struct dentry *de, int *set)
 388 {
 389         lock_dentry(de);
 390         if (likely(de->d_op != &ll_d_ops)) {
 391                 de->d_op = &ll_init_d_ops;
 392                 *set = 1;
 393         }
 394         unlock_dentry(de);
 395 }
 396
 397 static inline void ll_dop_fini(struct dentry *de, int succ)
 398 {
 399         lock_dentry(de);
 400         if (likely(de->d_op == &ll_init_d_ops)) {
 401                 if (succ)
 402                         de->d_op = &ll_d_ops;
 403                 else
 404                         de->d_op = &ll_fini_d_ops;
 405                 unlock_dentry(de);
 406                 smp_wmb();
 407                 ll_d_wakeup(de);
 408         } else {
 409                 if (succ)
 410                         de->d_op = &ll_d_ops;
 411                 unlock_dentry(de);
 412         }
 413 }
 414
 415 int ll_lookup_it_finish(struct ptlrpc_request *request,
 416                      struct lookup_intent *it, void *data)
 417 {
 418         struct it_cb_data *icbd = data;
 419         struct dentry **de = icbd->icbd_childp;
 420         struct inode *parent = icbd->icbd_parent;
 421         struct ll_sb_info *sbi = ll_i2sbi(parent);
 422         struct inode *inode = NULL;
 423         int set = 0, rc;
 424         ENTRY;
 425
 426         ll_dop_init(*de, &set);
 427
 428         /* NB 1 request reference will be taken away by ll_intent_lock()
 429          * when I return */
 430         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 431                 struct dentry *save = *de;
 432
 433                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 434                 if (rc) {
 435                         if (set)
 436                                 ll_dop_fini(*de, 0);
 437                         RETURN(rc);
 438                 }
 439
 440                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 441                        inode, inode->i_ino, inode->i_generation);
 442                 md_set_lock_data(sbi->ll_md_exp,
 443                                  &it->d.lustre.it_lock_handle, inode);
 444
 445                 /* We used to query real size from OSTs here, but actually
 446                    this is not needed. For stat() calls size would be updated
 447                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 448                    2.4 and
 449                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 450                    Everybody else who needs correct file size would call
 451                    ll_glimpse_size or some equivalent themselves anyway.
 452                    Also see bug 7198. */
 453
 454                 *de = ll_find_alias(inode, *de);
 455                 if (set && *de != save)
 456                         ll_dop_fini(save, 0);
 457         } else {
 458                 /* Check that parent has UPDATE lock. If there is none, we
 459                    cannot afford to hash this dentry (done by ll_d_add) as it
 460                    might get picked up later when UPDATE lock will appear */
 461                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 462                         spin_lock(&dcache_lock);
 463                         ll_d_add(*de, inode);
 464                         spin_unlock(&dcache_lock);
 465                 } else {
 466                         (*de)->d_inode = NULL;
 467                         /* We do not want to hash the dentry if don`t have a
 468                          * lock, but if this dentry is later used in d_move,
 469                          * we'd hit uninitialised list head d_hash, so we just
 470                          * do this to init d_hash field but leave dentry
 471                          * unhashed. (bug 10796). */
 472                         d_rehash(*de);
 473                         d_drop(*de);
 474                 }
 475         }
 476
 477         ll_set_dd(*de);
 478
 479         ll_dop_fini(*de, 1);
 480
 481         RETURN(0);
 482 }
 483
 484 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 485                                    struct lookup_intent *it, int lookup_flags)
 486 {
 487         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 488         struct dentry *save = dentry, *retval;
 489         struct ptlrpc_request *req = NULL;
 490         struct md_op_data *op_data;
 491         struct it_cb_data icbd;
 492         __u32 opc;
 493         int rc;
 494         ENTRY;
 495
 496         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 497                 RETURN(ERR_PTR(-ENAMETOOLONG));
 498
 499         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 500                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 501                parent->i_generation, parent, LL_IT2STR(it));
 502
 503         if (d_mountpoint(dentry))
 504                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 505
 506         ll_frob_intent(&it, &lookup_it);
 507
 508         /* As do_lookup is called before follow_mount, root dentry may be left
 509          * not valid, revalidate it here. */
 510         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 511             (it->it_op & (IT_OPEN | IT_CREAT))) {
 512                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 513                 if (rc)
 514                         RETURN(ERR_PTR(rc));
 515         }
 516
 517         if (it->it_op == IT_GETATTR) {
 518                 rc = ll_statahead_enter(parent, &dentry, 1);
 519                 if (rc >= 0) {
 520                         ll_statahead_exit(dentry, rc);
 521                         if (rc == 1)
 522                                 RETURN(retval = dentry);
 523                 }
 524         }
 525
 526         icbd.icbd_childp = &dentry;
 527         icbd.icbd_parent = parent;
 528
 529         if (it->it_op & IT_CREAT ||
 530             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 531                 opc = LUSTRE_OPC_CREATE;
 532         else
 533                 opc = LUSTRE_OPC_ANY;
 534
 535         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 536                                      dentry->d_name.len, lookup_flags, opc,
 537                                      NULL);
 538         if (IS_ERR(op_data))
 539                 RETURN((void *)op_data);
 540
 541         it->it_create_mode &= ~current->fs->umask;
 542
 543         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 544                             lookup_flags, &req, ll_md_blocking_ast, 0);
 545         ll_finish_md_op_data(op_data);
 546         if (rc < 0)
 547                 GOTO(out, retval = ERR_PTR(rc));
 548
 549         rc = ll_lookup_it_finish(req, it, &icbd);
 550         if (rc != 0) {
 551                 ll_intent_release(it);
 552                 GOTO(out, retval = ERR_PTR(rc));
 553         }
 554
 555         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 556             !S_ISREG(dentry->d_inode->i_mode) &&
 557             !S_ISDIR(dentry->d_inode->i_mode)) {
 558                 ll_release_openhandle(dentry, it);
 559         }
 560         ll_lookup_finish_locks(it, dentry);
 561
 562         if (dentry == save)
 563                 GOTO(out, retval = NULL);
 564         else
 565                 GOTO(out, retval = dentry);
 566  out:
 567         if (req)
 568                 ptlrpc_req_finished(req);
 569         return retval;
 570 }
 571
 572 #ifdef HAVE_VFS_INTENT_PATCHES
 573 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 574                                    struct nameidata *nd)
 575 {
 576         struct dentry *de;
 577         ENTRY;
 578
 579         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 580                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 581         else
 582                 de = ll_lookup_it(parent, dentry, NULL, 0);
 583
 584         RETURN(de);
 585 }
 586 #else
 587 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 588                                         int lookup_flags)
 589 {
 590         struct lookup_intent *it;
 591
 592         OBD_ALLOC(it, sizeof(*it));
 593         if (!it)
 594                 return ERR_PTR(-ENOMEM);
 595
 596         if (lookup_flags & LOOKUP_OPEN) {
 597                 it->it_op = IT_OPEN;
 598                 if (lookup_flags & LOOKUP_CREATE)
 599                         it->it_op |= IT_CREAT;
 600                 it->it_create_mode = oit->create_mode;
 601                 it->it_flags = oit->flags;
 602         } else {
 603                 it->it_op = IT_GETATTR;
 604         }
 605
 606 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 607                 /* Since there is no way to pass our intent to ll_file_open,
 608                  * just check the file is there. Actual open will be done
 609                  * in ll_file_open */
 610                 if (it->it_op & IT_OPEN)
 611                         it->it_op = IT_LOOKUP;
 612 #endif
 613
 614         return it;
 615 }
 616
 617 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 618                                    struct nameidata *nd)
 619 {
 620         struct dentry *de;
 621         ENTRY;
 622
 623         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 624                 struct lookup_intent *it;
 625
 626 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 627                 /* Did we came here from failed revalidate just to propagate
 628                  * its error? */
 629                 if (nd->flags & LOOKUP_OPEN)
 630                         if (IS_ERR(nd->intent.open.file))
 631                                 RETURN((struct dentry *)nd->intent.open.file);
 632 #endif
 633
 634                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 635                         it = ll_d2d(dentry)->lld_it;
 636                         ll_d2d(dentry)->lld_it = NULL;
 637                 } else {
 638                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 639                         if (IS_ERR(it))
 640                                 RETURN((struct dentry *)it);
 641                 }
 642
 643                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 644                 if (de)
 645                         dentry = de;
 646                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 647                         if (dentry->d_inode &&
 648                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 649 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 650                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 651                                         // We cannot call open here as it would
 652                                         // deadlock.
 653                                         ptlrpc_req_finished(
 654                                                        (struct ptlrpc_request *)
 655                                                           it->d.lustre.it_data);
 656                                 } else {
 657                                         struct file *filp;
 658                                         nd->intent.open.file->private_data = it;
 659                                         filp =lookup_instantiate_filp(nd,dentry,
 660                                                                       NULL);
 661 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 662 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 663  * nd->intent.open.file for error, so we need to return it as lookup's result
 664  * instead */
 665                                         if (IS_ERR(filp)) {
 666                                                 if (de)
 667                                                         dput(de);
 668                                                 de = (struct dentry *) filp;
 669                                         }
 670 #endif
 671
 672                                 }
 673 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 674                                 /* Release open handle as we have no way to
 675                                  * pass it to ll_file_open */
 676                                 ll_release_openhandle(dentry, it);
 677 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 678                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 679                                 // XXX This can only reliably work on assumption
 680                                 // that there are NO hashed negative dentries.
 681                                 ll_d2d(dentry)->lld_it = it;
 682                                 it = NULL; /* Will be freed in ll_create_nd */
 683                                 /* We absolutely depend on ll_create_nd to be
 684                                  * called to not leak this intent and possible
 685                                  * data attached to it */
 686                         }
 687                 }
 688
 689                 if (it) {
 690                         ll_intent_release(it);
 691                         OBD_FREE(it, sizeof(*it));
 692                 }
 693         } else {
 694                 de = ll_lookup_it(parent, dentry, NULL, 0);
 695         }
 696
 697         RETURN(de);
 698 }
 699 #endif
 700
 701 /* We depend on "mode" being set with the proper file type/umask by now */
 702 static struct inode *ll_create_node(struct inode *dir, const char *name,
 703                                     int namelen, const void *data, int datalen,
 704                                     int mode, __u64 extra,
 705                                     struct lookup_intent *it)
 706 {
 707         struct inode *inode = NULL;
 708         struct ptlrpc_request *request = NULL;
 709         struct ll_sb_info *sbi = ll_i2sbi(dir);
 710         int rc;
 711         ENTRY;
 712
 713         LASSERT(it && it->d.lustre.it_disposition);
 714
 715         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 716         request = it->d.lustre.it_data;
 717         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 718         rc = ll_prep_inode(&inode, request, dir->i_sb);
 719         if (rc)
 720                 GOTO(out, inode = ERR_PTR(rc));
 721
 722         LASSERT(list_empty(&inode->i_dentry));
 723
 724         /* We asked for a lock on the directory, but were granted a
 725          * lock on the inode.  Since we finally have an inode pointer,
 726          * stuff it in the lock. */
 727         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 728                inode, inode->i_ino, inode->i_generation);
 729         md_set_lock_data(sbi->ll_md_exp,
 730                          &it->d.lustre.it_lock_handle, inode);
 731         EXIT;
 732  out:
 733         ptlrpc_req_finished(request);
 734         return inode;
 735 }
 736
 737 /*
 738  * By the time this is called, we already have created the directory cache
 739  * entry for the new file, but it is so far negative - it has no inode.
 740  *
 741  * We defer creating the OBD object(s) until open, to keep the intent and
 742  * non-intent code paths similar, and also because we do not have the MDS
 743  * inode number before calling ll_create_node() (which is needed for LOV),
 744  * so we would need to do yet another RPC to the MDS to store the LOV EA
 745  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 746  * lmm_size in datalen (the MDS still has code which will handle that).
 747  *
 748  * If the create succeeds, we fill in the inode information
 749  * with d_instantiate().
 750  */
 751 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 752                         struct lookup_intent *it)
 753 {
 754         struct inode *inode;
 755         int rc = 0;
 756         ENTRY;
 757
 758         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 759                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 760                dir->i_generation, dir, LL_IT2STR(it));
 761
 762         rc = it_open_error(DISP_OPEN_CREATE, it);
 763         if (rc)
 764                 RETURN(rc);
 765
 766         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 767                                NULL, 0, mode, 0, it);
 768         if (IS_ERR(inode)) {
 769                 RETURN(PTR_ERR(inode));
 770         }
 771
 772         d_instantiate(dentry, inode);
 773         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 774          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 775          * successful create. Hash it here. */
 776         spin_lock(&dcache_lock);
 777         if (d_unhashed(dentry))
 778                 d_rehash_cond(dentry, 0);
 779         spin_unlock(&dcache_lock);
 780         RETURN(0);
 781 }
 782
 783 static void ll_update_times(struct ptlrpc_request *request,
 784                             struct inode *inode)
 785 {
 786         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 787                                                        &RMF_MDT_BODY);
 788
 789         LASSERT(body);
 790         /* mtime is always updated with ctime, but can be set in past.
 791            As write and utime(2) may happen within 1 second, and utime's
 792            mtime has a priority over write's one, so take mtime from mds
 793            for the same ctimes. */
 794         if (body->valid & OBD_MD_FLCTIME &&
 795             body->ctime >= LTIME_S(inode->i_ctime)) {
 796                 LTIME_S(inode->i_ctime) = body->ctime;
 797
 798                 if (body->valid & OBD_MD_FLMTIME) {
 799                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 800                                "to "LPU64"\n", inode->i_ino,
 801                                LTIME_S(inode->i_mtime), body->mtime);
 802                         LTIME_S(inode->i_mtime) = body->mtime;
 803                 }
 804         }
 805 }
 806
 807 static int ll_new_node(struct inode *dir, struct qstr *name,
 808                        const char *tgt, int mode, int rdev,
 809                        struct dentry *dchild, __u32 opc)
 810 {
 811         struct ptlrpc_request *request = NULL;
 812         struct md_op_data *op_data;
 813         struct inode *inode = NULL;
 814         struct ll_sb_info *sbi = ll_i2sbi(dir);
 815         int tgt_len = 0;
 816         int err;
 817
 818         ENTRY;
 819         if (unlikely(tgt != NULL))
 820                 tgt_len = strlen(tgt) + 1;
 821
 822         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 823                                      name->len, 0, opc, NULL);
 824         if (IS_ERR(op_data))
 825                 GOTO(err_exit, err = PTR_ERR(op_data));
 826
 827         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 828                         current->fsuid, current->fsgid,
 829                         current->cap_effective, rdev, &request);
 830         ll_finish_md_op_data(op_data);
 831         if (err)
 832                 GOTO(err_exit, err);
 833
 834         ll_update_times(request, dir);
 835
 836         if (dchild) {
 837                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 838                 if (err)
 839                      GOTO(err_exit, err);
 840
 841                 d_drop(dchild);
 842                 d_instantiate(dchild, inode);
 843                 EXIT;
 844         }
 845 err_exit:
 846         ptlrpc_req_finished(request);
 847
 848         return err;
 849 }
 850
 851 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 852                             unsigned rdev, struct dentry *dchild)
 853 {
 854         int err;
 855         ENTRY;
 856
 857         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 858                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 859                mode, rdev);
 860
 861         mode &= ~current->fs->umask;
 862
 863         switch (mode & S_IFMT) {
 864         case 0:
 865                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 866         case S_IFREG:
 867         case S_IFCHR:
 868         case S_IFBLK:
 869         case S_IFIFO:
 870         case S_IFSOCK:
 871                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 872                                   LUSTRE_OPC_MKNOD);
 873                 break;
 874         case S_IFDIR:
 875                 err = -EPERM;
 876                 break;
 877         default:
 878                 err = -EINVAL;
 879         }
 880         RETURN(err);
 881 }
 882
 883 #ifndef HAVE_VFS_INTENT_PATCHES
 884 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 885                         int mode, struct nameidata *nd)
 886 {
 887         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 888         int rc;
 889
 890         if (!it)
 891                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 892
 893         ll_d2d(dentry)->lld_it = NULL;
 894
 895         /* Was there an error? Propagate it! */
 896         if (it->d.lustre.it_status) {
 897                 rc = it->d.lustre.it_status;
 898                 goto out;
 899         }
 900
 901         rc = ll_create_it(dir, dentry, mode, it);
 902 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 903         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 904                 nd->intent.open.file->private_data = it;
 905                 lookup_instantiate_filp(nd, dentry, NULL);
 906         }
 907 #else
 908         ll_release_openhandle(dentry,it);
 909 #endif
 910
 911 out:
 912         ll_intent_release(it);
 913         OBD_FREE(it, sizeof(*it));
 914
 915         return rc;
 916 }
 917 #else
 918 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 919                         int mode, struct nameidata *nd)
 920 {
 921         if (!nd || !nd->intent.d.lustre.it_disposition)
 922                 /* No saved request? Just mknod the file */
 923                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 924
 925         return ll_create_it(dir, dentry, mode, &nd->intent);
 926 }
 927 #endif
 928
 929 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 930                               const char *tgt, struct dentry *dchild)
 931 {
 932         int err;
 933         ENTRY;
 934
 935         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 936                name->len, name->name, dir->i_ino, dir->i_generation,
 937                dir, 3000, tgt);
 938
 939         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 940                           0, dchild, LUSTRE_OPC_SYMLINK);
 941         RETURN(err);
 942 }
 943
 944 static int ll_link_generic(struct inode *src,  struct inode *dir,
 945                            struct qstr *name, struct dentry *dchild)
 946 {
 947         struct ll_sb_info *sbi = ll_i2sbi(dir);
 948         struct ptlrpc_request *request = NULL;
 949         struct md_op_data *op_data;
 950         int err;
 951
 952         ENTRY;
 953         CDEBUG(D_VFSTRACE,
 954                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 955                src->i_ino, src->i_generation, src, dir->i_ino,
 956                dir->i_generation, dir, name->len, name->name);
 957
 958         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 959                                      0, LUSTRE_OPC_ANY, NULL);
 960         if (IS_ERR(op_data))
 961                 RETURN(PTR_ERR(op_data));
 962
 963         err = md_link(sbi->ll_md_exp, op_data, &request);
 964         ll_finish_md_op_data(op_data);
 965         if (err)
 966                 GOTO(out, err);
 967         if (dchild)
 968                 d_drop(dchild);
 969
 970         ll_update_times(request, dir);
 971         EXIT;
 972 out:
 973         ptlrpc_req_finished(request);
 974         RETURN(err);
 975 }
 976
 977 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 978                             int mode, struct dentry *dchild)
 979
 980 {
 981         int err;
 982         ENTRY;
 983
 984         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 985                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 986
 987         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
 988         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 989
 990         RETURN(err);
 991 }
 992
 993 /* Try to find the child dentry by its name.
 994    If found, put the result fid into @fid. */
 995 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
 996                              struct lu_fid *fid)
 997 {
 998         struct dentry *parent, *child;
 999
1000         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1001         child = d_lookup(parent, name);
1002         if (child) {
1003                 if (child->d_inode)
1004                         *fid = *ll_inode2fid(child->d_inode);
1005                 dput(child);
1006         }
1007 }
1008
1009 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1010                             struct dentry *dchild, struct qstr *name)
1011 {
1012         struct ptlrpc_request *request = NULL;
1013         struct md_op_data *op_data;
1014         int rc;
1015         ENTRY;
1016
1017         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1018                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1019
1020         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1021                 RETURN(-EBUSY);
1022
1023         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1024                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1025         if (IS_ERR(op_data))
1026                 RETURN(PTR_ERR(op_data));
1027
1028         ll_get_child_fid(dir, name, &op_data->op_fid3);
1029         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1030         ll_finish_md_op_data(op_data);
1031         if (rc == 0)
1032                 ll_update_times(request, dir);
1033         ptlrpc_req_finished(request);
1034         RETURN(rc);
1035 }
1036
1037 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1038 {
1039         struct mdt_body *body;
1040         struct lov_mds_md *eadata;
1041         struct lov_stripe_md *lsm = NULL;
1042         struct obd_trans_info oti = { 0 };
1043         struct obdo *oa;
1044         int rc;
1045         ENTRY;
1046
1047         /* req is swabbed so this is safe */
1048         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1049         if (!(body->valid & OBD_MD_FLEASIZE))
1050                 RETURN(0);
1051
1052         if (body->eadatasize == 0) {
1053                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1054                 GOTO(out, rc = -EPROTO);
1055         }
1056
1057         /* The MDS sent back the EA because we unlinked the last reference
1058          * to this file. Use this EA to unlink the objects on the OST.
1059          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1060          * check it is complete and sensible. */
1061         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1062                                               body->eadatasize);
1063         LASSERT(eadata != NULL);
1064
1065         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1066         if (rc < 0) {
1067                 CERROR("obd_unpackmd: %d\n", rc);
1068                 GOTO(out, rc);
1069         }
1070         LASSERT(rc >= sizeof(*lsm));
1071
1072         rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
1073         if (rc)
1074                 GOTO(out_free_memmd, rc);
1075
1076         OBDO_ALLOC(oa);
1077         if (oa == NULL)
1078                 GOTO(out_free_memmd, rc = -ENOMEM);
1079
1080         oa->o_id = lsm->lsm_object_id;
1081         oa->o_gr = lsm->lsm_object_gr;
1082         oa->o_mode = body->mode & S_IFMT;
1083         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1084
1085         if (body->valid & OBD_MD_FLCOOKIE) {
1086                 oa->o_valid |= OBD_MD_FLCOOKIE;
1087                 oti.oti_logcookies =
1088                         req_capsule_server_sized_get(&request->rq_pill,
1089                                                      &RMF_LOGCOOKIES,
1090                                                    sizeof(struct llog_cookie) *
1091                                                      lsm->lsm_stripe_count);
1092                 if (oti.oti_logcookies == NULL) {
1093                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1094                         body->valid &= ~OBD_MD_FLCOOKIE;
1095                 }
1096         }
1097
1098         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir));
1099         OBDO_FREE(oa);
1100         if (rc)
1101                 CERROR("obd destroy objid "LPX64" error %d\n",
1102                        lsm->lsm_object_id, rc);
1103  out_free_memmd:
1104         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1105  out:
1106         return rc;
1107 }
1108
1109 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1110                              struct dentry *dchild, struct qstr *name)
1111 {
1112         struct ptlrpc_request *request = NULL;
1113         struct md_op_data *op_data;
1114         int rc;
1115         ENTRY;
1116         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1117                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1118
1119         /*
1120          * XXX: unlink bind mountpoint maybe call to here,
1121          * just check it as vfs_unlink does.
1122          */
1123         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1124                 RETURN(-EBUSY);
1125
1126         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1127                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1128         if (IS_ERR(op_data))
1129                 RETURN(PTR_ERR(op_data));
1130
1131         ll_get_child_fid(dir, name, &op_data->op_fid3);
1132         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1133         ll_finish_md_op_data(op_data);
1134         if (rc)
1135                 GOTO(out, rc);
1136
1137         ll_update_times(request, dir);
1138
1139         rc = ll_objects_destroy(request, dir);
1140  out:
1141         ptlrpc_req_finished(request);
1142         RETURN(rc);
1143 }
1144
1145 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1146                              struct dentry *src_dchild, struct qstr *src_name,
1147                              struct inode *tgt, struct dentry *tgt_dparent,
1148                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1149 {
1150         struct ptlrpc_request *request = NULL;
1151         struct ll_sb_info *sbi = ll_i2sbi(src);
1152         struct md_op_data *op_data;
1153         int err;
1154         ENTRY;
1155         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1156                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1157                src->i_ino, src->i_generation, src, tgt_name->len,
1158                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1159
1160         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1161             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1162                 RETURN(-EBUSY);
1163
1164         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1165                                      LUSTRE_OPC_ANY, NULL);
1166         if (IS_ERR(op_data))
1167                 RETURN(PTR_ERR(op_data));
1168
1169         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1170         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1171         err = md_rename(sbi->ll_md_exp, op_data,
1172                         src_name->name, src_name->len,
1173                         tgt_name->name, tgt_name->len, &request);
1174         ll_finish_md_op_data(op_data);
1175         if (!err) {
1176                 ll_update_times(request, src);
1177                 ll_update_times(request, tgt);
1178                 err = ll_objects_destroy(request, src);
1179         }
1180
1181         ptlrpc_req_finished(request);
1182
1183         RETURN(err);
1184 }
1185
1186 #ifdef HAVE_VFS_INTENT_PATCHES
1187 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1188 {
1189         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1190 }
1191 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1192 {
1193         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1194                                  NULL, &srcnd->last,
1195                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1196                                  NULL, &tgtnd->last);
1197 }
1198 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1199 {
1200         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1201                                &tgtnd->last, NULL);
1202 }
1203 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1204 {
1205         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1206 }
1207 static int ll_rmdir_raw(struct nameidata *nd)
1208 {
1209         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1210                                 &nd->last);
1211 }
1212 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1213 {
1214         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1215 }
1216 static int ll_unlink_raw(struct nameidata *nd)
1217 {
1218         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1219                                  &nd->last);
1220 }
1221 #endif
1222
1223 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1224                     ll_dev_t rdev)
1225 {
1226         return ll_mknod_generic(dir, &dchild->d_name, mode,
1227                                 old_encode_dev(rdev), dchild);
1228 }
1229
1230 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1231 {
1232         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1233 }
1234 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1235 {
1236         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1237 }
1238 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1239 {
1240         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1241 }
1242 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1243                       const char *oldname)
1244 {
1245         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1246 }
1247 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1248                    struct dentry *new_dentry)
1249 {
1250         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1251                                new_dentry);
1252 }
1253 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1254                      struct inode *new_dir, struct dentry *new_dentry)
1255 {
1256         int err;
1257         err = ll_rename_generic(old_dir, NULL,
1258                                  old_dentry, &old_dentry->d_name,
1259                                  new_dir, NULL, new_dentry,
1260                                  &new_dentry->d_name);
1261         if (!err) {
1262 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1263                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1264 #endif
1265                         d_move(old_dentry, new_dentry);
1266         }
1267         return err;
1268 }
1269
1270 struct inode_operations ll_dir_inode_operations = {
1271 #ifdef HAVE_VFS_INTENT_PATCHES
1272         .link_raw           = ll_link_raw,
1273         .unlink_raw         = ll_unlink_raw,
1274         .symlink_raw        = ll_symlink_raw,
1275         .mkdir_raw          = ll_mkdir_raw,
1276         .rmdir_raw          = ll_rmdir_raw,
1277         .mknod_raw          = ll_mknod_raw,
1278         .rename_raw         = ll_rename_raw,
1279         .setattr            = ll_setattr,
1280         .setattr_raw        = ll_setattr_raw,
1281 #endif
1282         .mknod              = ll_mknod,
1283         .lookup             = ll_lookup_nd,
1284         .create             = ll_create_nd,
1285         /* We need all these non-raw things for NFSD, to not patch it. */
1286         .unlink             = ll_unlink,
1287         .mkdir              = ll_mkdir,
1288         .rmdir              = ll_rmdir,
1289         .symlink            = ll_symlink,
1290         .link               = ll_link,
1291         .rename             = ll_rename,
1292         .setattr            = ll_setattr,
1293         .getattr            = ll_getattr,
1294         .permission         = ll_inode_permission,
1295         .setxattr           = ll_setxattr,
1296         .getxattr           = ll_getxattr,
1297         .listxattr          = ll_listxattr,
1298         .removexattr        = ll_removexattr,
1299 };
1300
1301 struct inode_operations ll_special_inode_operations = {
1302 #ifdef HAVE_VFS_INTENT_PATCHES
1303         .setattr_raw    = ll_setattr_raw,
1304 #endif
1305         .setattr        = ll_setattr,
1306         .getattr        = ll_getattr,
1307         .permission     = ll_inode_permission,
1308         .setxattr       = ll_setxattr,
1309         .getxattr       = ll_getxattr,
1310         .listxattr      = ll_listxattr,
1311         .removexattr    = ll_removexattr,
1312 };