lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #include <linux/fs.h>
  38 #include <linux/sched.h>
  39 #include <linux/mm.h>
  40 #include <linux/smp_lock.h>
  41 #include <linux/quotaops.h>
  42 #include <linux/highmem.h>
  43 #include <linux/pagemap.h>
  44
  45 #define DEBUG_SUBSYSTEM S_LLITE
  46
  47 #include <obd_support.h>
  48 #include <lustre_fid.h>
  49 #include <lustre_lite.h>
  50 #include <lustre_dlm.h>
  51 #include <lustre_ver.h>
  52 #include <lustre_mdc.h>
  53 #include "llite_internal.h"
  54
  55 /*
  56  * Check if we have something mounted at the named dchild.
  57  * In such a case there would always be dentry present.
  58  */
  59 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  60                            struct qstr *name)
  61 {
  62         int mounted = 0;
  63
  64         if (unlikely(dchild)) {
  65                 mounted = d_mountpoint(dchild);
  66         } else if (dparent) {
  67                 dchild = d_lookup(dparent, name);
  68                 if (dchild) {
  69                         mounted = d_mountpoint(dchild);
  70                         dput(dchild);
  71                 }
  72         }
  73         return mounted;
  74 }
  75
  76 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  77 {
  78         ENTRY;
  79
  80         ldlm_lock_decref(lockh, mode);
  81
  82         RETURN(0);
  83 }
  84
  85
  86 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  87 static int ll_test_inode(struct inode *inode, void *opaque)
  88 {
  89         struct ll_inode_info *lli = ll_i2info(inode);
  90         struct lustre_md     *md = opaque;
  91
  92         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  93                 CERROR("MDS body missing FID\n");
  94                 return 0;
  95         }
  96
  97         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
  98                 return 0;
  99
 100         return 1;
 101 }
 102
 103 static int ll_set_inode(struct inode *inode, void *opaque)
 104 {
 105         struct ll_inode_info *lli = ll_i2info(inode);
 106         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
 107
 108         if (unlikely(!(body->valid & OBD_MD_FLID))) {
 109                 CERROR("MDS body missing FID\n");
 110                 return -EINVAL;
 111         }
 112
 113         lli->lli_fid = body->fid1;
 114         return 0;
 115 }
 116
 117
 118 /*
 119  * Get an inode by inode number (already instantiated by the intent lookup).
 120  * Returns inode or NULL
 121  */
 122 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 123                       struct lustre_md *md)
 124 {
 125         struct inode         *inode;
 126         ENTRY;
 127
 128         LASSERT(hash != 0);
 129         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 130
 131         if (inode) {
 132                 if (inode->i_state & I_NEW) {
 133                         int rc;
 134
 135                         ll_read_inode2(inode, md);
 136                         rc = cl_inode_init(inode, md);
 137                         if (rc != 0) {
 138                                 md->lsm = NULL;
 139                                 make_bad_inode(inode);
 140                                 unlock_new_inode(inode);
 141                                 iput(inode);
 142                                 inode = ERR_PTR(rc);
 143                         } else
 144                                 unlock_new_inode(inode);
 145                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 146                                 ll_update_inode(inode, md);
 147                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 148                        inode, PFID(&md->body->fid1));
 149         }
 150         RETURN(inode);
 151 }
 152
 153 static void ll_drop_negative_dentry(struct inode *dir)
 154 {
 155         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 156
 157         spin_lock(&dcache_lock);
 158 restart:
 159         list_for_each_entry_safe(dentry, tmp_alias,
 160                                  &dir->i_dentry,d_alias) {
 161                 if (!list_empty(&dentry->d_subdirs)) {
 162                         struct dentry *child;
 163                         list_for_each_entry_safe(child, tmp_subdir,
 164                                                  &dentry->d_subdirs,
 165                                                  d_child) {
 166                                 /* XXX Print some debug here? */
 167                                 if (!child->d_inode)
 168                                 /* Negative dentry. If we were
 169                                    dropping dcache lock, go
 170                                    throught the list again */
 171                                         if (ll_drop_dentry(child))
 172                                                 goto restart;
 173                         }
 174                 }
 175         }
 176         spin_unlock(&dcache_lock);
 177 }
 178
 179
 180 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 181                        void *data, int flag)
 182 {
 183         int rc;
 184         struct lustre_handle lockh;
 185         ENTRY;
 186
 187         switch (flag) {
 188         case LDLM_CB_BLOCKING:
 189                 ldlm_lock2handle(lock, &lockh);
 190                 rc = ldlm_cli_cancel(&lockh);
 191                 if (rc < 0) {
 192                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 193                         RETURN(rc);
 194                 }
 195                 break;
 196         case LDLM_CB_CANCELING: {
 197                 struct inode *inode = ll_inode_from_lock(lock);
 198                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 199                 struct lu_fid *fid;
 200
 201                 /* Invalidate all dentries associated with this inode */
 202                 if (inode == NULL)
 203                         break;
 204
 205                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 206                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 207                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 208                         bits &= ~MDS_INODELOCK_LOOKUP;
 209                 if ((bits & MDS_INODELOCK_UPDATE) &&
 210                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 211                         bits &= ~MDS_INODELOCK_UPDATE;
 212                 if ((bits & MDS_INODELOCK_OPEN) &&
 213                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 214                         bits &= ~MDS_INODELOCK_OPEN;
 215
 216                 fid = ll_inode2fid(inode);
 217                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 218                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 219                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 220                         LDLM_ERROR(lock, "data mismatch with object "
 221                                    DFID" (%p)", PFID(fid), inode);
 222                 }
 223
 224                 if (bits & MDS_INODELOCK_OPEN) {
 225                         int flags = 0;
 226                         switch (lock->l_req_mode) {
 227                         case LCK_CW:
 228                                 flags = FMODE_WRITE;
 229                                 break;
 230                         case LCK_PR:
 231                                 flags = FMODE_EXEC;
 232                                 break;
 233                         case LCK_CR:
 234                                 flags = FMODE_READ;
 235                                 break;
 236                         default:
 237                                 CERROR("Unexpected lock mode for OPEN lock "
 238                                        "%d, inode %ld\n", lock->l_req_mode,
 239                                        inode->i_ino);
 240                         }
 241                         ll_md_real_close(inode, flags);
 242                 }
 243
 244                 if (bits & MDS_INODELOCK_UPDATE)
 245                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 246
 247                 if (S_ISDIR(inode->i_mode) &&
 248                      (bits & MDS_INODELOCK_UPDATE)) {
 249                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 250                                inode->i_ino);
 251                         truncate_inode_pages(inode->i_mapping, 0);
 252                         ll_drop_negative_dentry(inode);
 253                 }
 254
 255                 if (inode->i_sb->s_root &&
 256                     inode != inode->i_sb->s_root->d_inode &&
 257                     (bits & MDS_INODELOCK_LOOKUP))
 258                         ll_unhash_aliases(inode);
 259                 iput(inode);
 260                 break;
 261         }
 262         default:
 263                 LBUG();
 264         }
 265
 266         RETURN(0);
 267 }
 268
 269 __u32 ll_i2suppgid(struct inode *i)
 270 {
 271         if (cfs_curproc_is_in_groups(i->i_gid))
 272                 return (__u32)i->i_gid;
 273         else
 274                 return (__u32)(-1);
 275 }
 276
 277 /* Pack the required supplementary groups into the supplied groups array.
 278  * If we don't need to use the groups from the target inode(s) then we
 279  * instead pack one or more groups from the user's supplementary group
 280  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 281 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 282 {
 283 #if 0
 284         int i;
 285 #endif
 286
 287         LASSERT(i1 != NULL);
 288         LASSERT(suppgids != NULL);
 289
 290         suppgids[0] = ll_i2suppgid(i1);
 291
 292         if (i2)
 293                 suppgids[1] = ll_i2suppgid(i2);
 294                 else
 295                         suppgids[1] = -1;
 296
 297 #if 0
 298         for (i = 0; i < current_ngroups; i++) {
 299                 if (suppgids[0] == -1) {
 300                         if (current_groups[i] != suppgids[1])
 301                                 suppgids[0] = current_groups[i];
 302                         continue;
 303                 }
 304                 if (suppgids[1] == -1) {
 305                         if (current_groups[i] != suppgids[0])
 306                                 suppgids[1] = current_groups[i];
 307                         continue;
 308                 }
 309                 break;
 310         }
 311 #endif
 312 }
 313
 314 static void ll_d_add(struct dentry *de, struct inode *inode)
 315 {
 316         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 317         /* d_instantiate */
 318         if (!list_empty(&de->d_alias)) {
 319                 spin_unlock(&dcache_lock);
 320                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 321                        de->d_name.len, de->d_name.name, de,
 322                        de->d_alias.next, de->d_alias.prev);
 323                 LBUG();
 324         }
 325         if (inode)
 326                 list_add(&de->d_alias, &inode->i_dentry);
 327         de->d_inode = inode;
 328
 329         /* d_rehash */
 330         if (!d_unhashed(de)) {
 331                 spin_unlock(&dcache_lock);
 332                 CERROR("dentry %.*s %p hash next %p\n",
 333                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 334                 LBUG();
 335         }
 336         d_rehash_cond(de, 0);
 337 }
 338
 339 /* Search "inode"'s alias list for a dentry that has the same name and parent
 340  * as de.  If found, return it.  If not found, return de.
 341  * Lustre can't use d_add_unique because don't unhash aliases for directory
 342  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 343  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 344  */
 345 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 346 {
 347         struct list_head *tmp;
 348         struct dentry *dentry;
 349         struct dentry *last_discon = NULL;
 350
 351         spin_lock(&dcache_lock);
 352         list_for_each(tmp, &inode->i_dentry) {
 353                 dentry = list_entry(tmp, struct dentry, d_alias);
 354
 355                 /* We are called here with 'de' already on the aliases list. */
 356                 if (unlikely(dentry == de)) {
 357                         CERROR("whoops\n");
 358                         continue;
 359                 }
 360
 361                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 362                         LASSERT(last_discon == NULL);
 363                         last_discon = dentry;
 364                         continue;
 365                 }
 366
 367                 if (dentry->d_parent != de->d_parent)
 368                         continue;
 369
 370                 if (dentry->d_name.hash != de->d_name.hash)
 371                         continue;
 372
 373                 if (dentry->d_name.len != de->d_name.len)
 374                         continue;
 375
 376                 if (memcmp(dentry->d_name.name, de->d_name.name,
 377                            de->d_name.len) != 0)
 378                         continue;
 379
 380                 dget_locked(dentry);
 381                 lock_dentry(dentry);
 382                 __d_drop(dentry);
 383                 unlock_dentry(dentry);
 384                 ll_dops_init(dentry, 0);
 385                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 386                 spin_unlock(&dcache_lock);
 387                 iput(inode);
 388                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 389                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 390                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 391                 return dentry;
 392         }
 393
 394         if (last_discon) {
 395                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 396                         "refc %d\n", last_discon, last_discon->d_inode,
 397                         atomic_read(&last_discon->d_count));
 398                 dget_locked(last_discon);
 399                 lock_dentry(last_discon);
 400                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 401                 unlock_dentry(last_discon);
 402                 spin_unlock(&dcache_lock);
 403                 ll_dops_init(last_discon, 1);
 404                 d_rehash(de);
 405                 d_move(last_discon, de);
 406                 iput(inode);
 407                 return last_discon;
 408         }
 409         de->d_flags |= DCACHE_LUSTRE_INVALID;
 410         ll_d_add(de, inode);
 411
 412         spin_unlock(&dcache_lock);
 413
 414         return de;
 415 }
 416
 417 int ll_lookup_it_finish(struct ptlrpc_request *request,
 418                         struct lookup_intent *it, void *data)
 419 {
 420         struct it_cb_data *icbd = data;
 421         struct dentry **de = icbd->icbd_childp;
 422         struct inode *parent = icbd->icbd_parent;
 423         struct ll_sb_info *sbi = ll_i2sbi(parent);
 424         struct inode *inode = NULL;
 425         int rc;
 426         ENTRY;
 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                 __u32 bits;
 433
 434                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 435                 if (rc)
 436                         RETURN(rc);
 437
 438                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 439                        inode, inode->i_ino, inode->i_generation);
 440                 md_set_lock_data(sbi->ll_md_exp,
 441                                  &it->d.lustre.it_lock_handle, inode, &bits);
 442
 443                 /* We used to query real size from OSTs here, but actually
 444                    this is not needed. For stat() calls size would be updated
 445                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 446                    2.4 and
 447                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 448                    Everybody else who needs correct file size would call
 449                    cl_glimpse_size or some equivalent themselves anyway.
 450                    Also see bug 7198. */
 451
 452                 ll_dops_init(*de, 1);
 453                 *de = ll_find_alias(inode, *de);
 454                 if (*de != save) {
 455                         struct ll_dentry_data *lld = ll_d2d(*de);
 456
 457                         /* just make sure the ll_dentry_data is ready */
 458                         if (unlikely(lld == NULL)) {
 459                                 ll_set_dd(*de);
 460                                 lld = ll_d2d(*de);
 461                                 if (likely(lld != NULL))
 462                                         lld->lld_sa_generation = 0;
 463                         }
 464                 }
 465                 /* we have lookup look - unhide dentry */
 466                 if (bits & MDS_INODELOCK_LOOKUP) {
 467                         lock_dentry(*de);
 468                         (*de)->d_flags &= ~DCACHE_LUSTRE_INVALID;
 469                         unlock_dentry(*de);
 470                 }
 471         } else {
 472                 ll_dops_init(*de, 1);
 473                 /* Check that parent has UPDATE lock. If there is none, we
 474                    cannot afford to hash this dentry (done by ll_d_add) as it
 475                    might get picked up later when UPDATE lock will appear */
 476                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 477                         spin_lock(&dcache_lock);
 478                         ll_d_add(*de, NULL);
 479                         spin_unlock(&dcache_lock);
 480                 } else {
 481                         /* negative lookup - and don't have update lock to
 482                          * parent */
 483                         lock_dentry(*de);
 484                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 485                         unlock_dentry(*de);
 486
 487                         (*de)->d_inode = NULL;
 488                         /* We do not want to hash the dentry if don`t have a
 489                          * lock, but if this dentry is later used in d_move,
 490                          * we'd hit uninitialised list head d_hash, so we just
 491                          * do this to init d_hash field but leave dentry
 492                          * unhashed. (bug 10796). */
 493                         d_rehash(*de);
 494                         d_drop(*de);
 495                 }
 496         }
 497
 498         RETURN(0);
 499 }
 500
 501 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 502                                    struct lookup_intent *it, int lookup_flags)
 503 {
 504         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 505         struct dentry *save = dentry, *retval;
 506         struct ptlrpc_request *req = NULL;
 507         struct md_op_data *op_data;
 508         struct it_cb_data icbd;
 509         __u32 opc;
 510         int rc, first = 0;
 511         ENTRY;
 512
 513         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 514                 RETURN(ERR_PTR(-ENAMETOOLONG));
 515
 516         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 517                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 518                parent->i_generation, parent, LL_IT2STR(it));
 519
 520         if (d_mountpoint(dentry))
 521                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 522
 523         ll_frob_intent(&it, &lookup_it);
 524
 525         /* As do_lookup is called before follow_mount, root dentry may be left
 526          * not valid, revalidate it here. */
 527         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 528             (it->it_op & (IT_OPEN | IT_CREAT))) {
 529                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 530                 if (rc)
 531                         RETURN(ERR_PTR(rc));
 532         }
 533
 534         if (it->it_op == IT_GETATTR) {
 535                 first = ll_statahead_enter(parent, &dentry, 1);
 536                 if (first >= 0) {
 537                         ll_statahead_exit(parent, dentry, first);
 538                         if (first == 1)
 539                                 RETURN(retval = dentry);
 540                 }
 541         }
 542
 543         icbd.icbd_childp = &dentry;
 544         icbd.icbd_parent = parent;
 545
 546         if (it->it_op & IT_CREAT ||
 547             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 548                 opc = LUSTRE_OPC_CREATE;
 549         else
 550                 opc = LUSTRE_OPC_ANY;
 551
 552         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 553                                      dentry->d_name.len, lookup_flags, opc,
 554                                      NULL);
 555         if (IS_ERR(op_data))
 556                 RETURN((void *)op_data);
 557
 558         it->it_create_mode &= ~current->fs->umask;
 559
 560         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 561                             lookup_flags, &req, ll_md_blocking_ast, 0);
 562         ll_finish_md_op_data(op_data);
 563         if (rc < 0)
 564                 GOTO(out, retval = ERR_PTR(rc));
 565
 566         rc = ll_lookup_it_finish(req, it, &icbd);
 567         if (rc != 0) {
 568                 ll_intent_release(it);
 569                 GOTO(out, retval = ERR_PTR(rc));
 570         }
 571
 572         if (first == -EEXIST)
 573                 ll_statahead_mark(parent, dentry);
 574
 575         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 576             !S_ISREG(dentry->d_inode->i_mode) &&
 577             !S_ISDIR(dentry->d_inode->i_mode)) {
 578                 ll_release_openhandle(dentry, it);
 579         }
 580         ll_finish_locks(it, dentry);
 581
 582         if (dentry == save)
 583                 GOTO(out, retval = NULL);
 584         else
 585                 GOTO(out, retval = dentry);
 586  out:
 587         if (req)
 588                 ptlrpc_req_finished(req);
 589         return retval;
 590 }
 591
 592 #ifdef HAVE_VFS_INTENT_PATCHES
 593 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 594                                    struct nameidata *nd)
 595 {
 596         struct dentry *de;
 597         ENTRY;
 598
 599         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 600                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 601         else
 602                 de = ll_lookup_it(parent, dentry, NULL, 0);
 603
 604         RETURN(de);
 605 }
 606 #else
 607 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 608                                         int lookup_flags)
 609 {
 610         struct lookup_intent *it;
 611
 612         OBD_ALLOC(it, sizeof(*it));
 613         if (!it)
 614                 return ERR_PTR(-ENOMEM);
 615
 616         if (lookup_flags & LOOKUP_OPEN) {
 617                 it->it_op = IT_OPEN;
 618                 if (lookup_flags & LOOKUP_CREATE)
 619                         it->it_op |= IT_CREAT;
 620                 it->it_create_mode = oit->create_mode;
 621                 it->it_flags = oit->flags;
 622         } else {
 623                 it->it_op = IT_GETATTR;
 624         }
 625
 626 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 627                 /* Since there is no way to pass our intent to ll_file_open,
 628                  * just check the file is there. Actual open will be done
 629                  * in ll_file_open */
 630                 if (it->it_op & IT_OPEN)
 631                         it->it_op = IT_LOOKUP;
 632 #endif
 633
 634         return it;
 635 }
 636
 637 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 638                                    struct nameidata *nd)
 639 {
 640         struct dentry *de;
 641         ENTRY;
 642
 643         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 644                 struct lookup_intent *it;
 645
 646 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 647                 /* Did we came here from failed revalidate just to propagate
 648                  * its error? */
 649                 if (nd->flags & LOOKUP_OPEN)
 650                         if (IS_ERR(nd->intent.open.file))
 651                                 RETURN((struct dentry *)nd->intent.open.file);
 652 #endif
 653
 654                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 655                         it = ll_d2d(dentry)->lld_it;
 656                         ll_d2d(dentry)->lld_it = NULL;
 657                 } else {
 658                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 659                                 /* We are sure this is new dentry, so we need to create
 660                                    our private data and set the dentry ops */
 661                                 ll_dops_init(dentry, 1);
 662                                 RETURN(NULL);
 663                         }
 664                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 665                         if (IS_ERR(it))
 666                                 RETURN((struct dentry *)it);
 667                 }
 668
 669                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 670                 if (de)
 671                         dentry = de;
 672                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 673                         if (dentry->d_inode &&
 674                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 675 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 676                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 677                                         // We cannot call open here as it would
 678                                         // deadlock.
 679                                         ptlrpc_req_finished(
 680                                                        (struct ptlrpc_request *)
 681                                                           it->d.lustre.it_data);
 682                                 } else {
 683 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 684 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 685  * nd->intent.open.file for error, so we need to return it as lookup's result
 686  * instead */
 687                                         struct file *filp;
 688                                         nd->intent.open.file->private_data = it;
 689                                         filp =lookup_instantiate_filp(nd,dentry,
 690                                                                       NULL);
 691                                         if (IS_ERR(filp)) {
 692                                                 if (de)
 693                                                         dput(de);
 694                                                 de = (struct dentry *) filp;
 695                                         }
 696 #else
 697                                         nd->intent.open.file->private_data = it;
 698                                         (void)lookup_instantiate_filp(nd,dentry,
 699                                                                       NULL);
 700 #endif
 701
 702                                 }
 703 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 704                                 /* Release open handle as we have no way to
 705                                  * pass it to ll_file_open */
 706                                 ll_release_openhandle(dentry, it);
 707 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 708                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 709                                 // XXX This can only reliably work on assumption
 710                                 // that there are NO hashed negative dentries.
 711                                 ll_d2d(dentry)->lld_it = it;
 712                                 it = NULL; /* Will be freed in ll_create_nd */
 713                                 /* We absolutely depend on ll_create_nd to be
 714                                  * called to not leak this intent and possible
 715                                  * data attached to it */
 716                         }
 717                 }
 718
 719                 if (it) {
 720                         ll_intent_release(it);
 721                         OBD_FREE(it, sizeof(*it));
 722                 }
 723         } else {
 724                 de = ll_lookup_it(parent, dentry, NULL, 0);
 725         }
 726
 727         RETURN(de);
 728 }
 729 #endif
 730
 731 /* We depend on "mode" being set with the proper file type/umask by now */
 732 static struct inode *ll_create_node(struct inode *dir, const char *name,
 733                                     int namelen, const void *data, int datalen,
 734                                     int mode, __u64 extra,
 735                                     struct lookup_intent *it)
 736 {
 737         struct inode *inode = NULL;
 738         struct ptlrpc_request *request = NULL;
 739         struct ll_sb_info *sbi = ll_i2sbi(dir);
 740         int rc;
 741         ENTRY;
 742
 743         LASSERT(it && it->d.lustre.it_disposition);
 744
 745         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 746         request = it->d.lustre.it_data;
 747         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 748         rc = ll_prep_inode(&inode, request, dir->i_sb);
 749         if (rc)
 750                 GOTO(out, inode = ERR_PTR(rc));
 751
 752         LASSERT(list_empty(&inode->i_dentry));
 753
 754         /* We asked for a lock on the directory, but were granted a
 755          * lock on the inode.  Since we finally have an inode pointer,
 756          * stuff it in the lock. */
 757         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 758                inode, inode->i_ino, inode->i_generation);
 759         md_set_lock_data(sbi->ll_md_exp,
 760                          &it->d.lustre.it_lock_handle, inode, NULL);
 761         EXIT;
 762  out:
 763         ptlrpc_req_finished(request);
 764         return inode;
 765 }
 766
 767 /*
 768  * By the time this is called, we already have created the directory cache
 769  * entry for the new file, but it is so far negative - it has no inode.
 770  *
 771  * We defer creating the OBD object(s) until open, to keep the intent and
 772  * non-intent code paths similar, and also because we do not have the MDS
 773  * inode number before calling ll_create_node() (which is needed for LOV),
 774  * so we would need to do yet another RPC to the MDS to store the LOV EA
 775  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 776  * lmm_size in datalen (the MDS still has code which will handle that).
 777  *
 778  * If the create succeeds, we fill in the inode information
 779  * with d_instantiate().
 780  */
 781 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 782                         struct lookup_intent *it)
 783 {
 784         struct inode *inode;
 785         int rc = 0;
 786         ENTRY;
 787
 788         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 789                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 790                dir->i_generation, dir, LL_IT2STR(it));
 791
 792         rc = it_open_error(DISP_OPEN_CREATE, it);
 793         if (rc)
 794                 RETURN(rc);
 795
 796         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 797                                NULL, 0, mode, 0, it);
 798         if (IS_ERR(inode)) {
 799                 RETURN(PTR_ERR(inode));
 800         }
 801
 802         d_instantiate(dentry, inode);
 803         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 804          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 805          * successful create. Hash it here. */
 806         spin_lock(&dcache_lock);
 807         if (d_unhashed(dentry))
 808                 d_rehash_cond(dentry, 0);
 809         spin_unlock(&dcache_lock);
 810         RETURN(0);
 811 }
 812
 813 static void ll_update_times(struct ptlrpc_request *request,
 814                             struct inode *inode)
 815 {
 816         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 817                                                        &RMF_MDT_BODY);
 818
 819         LASSERT(body);
 820         /* mtime is always updated with ctime, but can be set in past.
 821            As write and utime(2) may happen within 1 second, and utime's
 822            mtime has a priority over write's one, so take mtime from mds
 823            for the same ctimes. */
 824         if (body->valid & OBD_MD_FLCTIME &&
 825             body->ctime >= LTIME_S(inode->i_ctime)) {
 826                 LTIME_S(inode->i_ctime) = body->ctime;
 827
 828                 if (body->valid & OBD_MD_FLMTIME) {
 829                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 830                                "to "LPU64"\n", inode->i_ino,
 831                                LTIME_S(inode->i_mtime), body->mtime);
 832                         LTIME_S(inode->i_mtime) = body->mtime;
 833                 }
 834         }
 835 }
 836
 837 static int ll_new_node(struct inode *dir, struct qstr *name,
 838                        const char *tgt, int mode, int rdev,
 839                        struct dentry *dchild, __u32 opc)
 840 {
 841         struct ptlrpc_request *request = NULL;
 842         struct md_op_data *op_data;
 843         struct inode *inode = NULL;
 844         struct ll_sb_info *sbi = ll_i2sbi(dir);
 845         int tgt_len = 0;
 846         int err;
 847
 848         ENTRY;
 849         if (unlikely(tgt != NULL))
 850                 tgt_len = strlen(tgt) + 1;
 851
 852         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 853                                      name->len, 0, opc, NULL);
 854         if (IS_ERR(op_data))
 855                 GOTO(err_exit, err = PTR_ERR(op_data));
 856
 857         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 858                         current->fsuid, current->fsgid,
 859                         cfs_curproc_cap_pack(), rdev, &request);
 860         ll_finish_md_op_data(op_data);
 861         if (err)
 862                 GOTO(err_exit, err);
 863
 864         ll_update_times(request, dir);
 865
 866         if (dchild) {
 867                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 868                 if (err)
 869                      GOTO(err_exit, err);
 870
 871                 d_drop(dchild);
 872                 d_instantiate(dchild, inode);
 873                 EXIT;
 874         }
 875 err_exit:
 876         ptlrpc_req_finished(request);
 877
 878         return err;
 879 }
 880
 881 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 882                             unsigned rdev, struct dentry *dchild)
 883 {
 884         int err;
 885         ENTRY;
 886
 887         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 888                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 889                mode, rdev);
 890
 891         mode &= ~current->fs->umask;
 892
 893         switch (mode & S_IFMT) {
 894         case 0:
 895                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 896         case S_IFREG:
 897         case S_IFCHR:
 898         case S_IFBLK:
 899         case S_IFIFO:
 900         case S_IFSOCK:
 901                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 902                                   LUSTRE_OPC_MKNOD);
 903                 break;
 904         case S_IFDIR:
 905                 err = -EPERM;
 906                 break;
 907         default:
 908                 err = -EINVAL;
 909         }
 910         RETURN(err);
 911 }
 912
 913 #ifndef HAVE_VFS_INTENT_PATCHES
 914 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 915                         int mode, struct nameidata *nd)
 916 {
 917         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 918         int rc;
 919
 920         if (!it)
 921                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 922
 923         ll_d2d(dentry)->lld_it = NULL;
 924
 925         /* Was there an error? Propagate it! */
 926         if (it->d.lustre.it_status) {
 927                 rc = it->d.lustre.it_status;
 928                 goto out;
 929         }
 930
 931         rc = ll_create_it(dir, dentry, mode, it);
 932 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 933         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 934                 nd->intent.open.file->private_data = it;
 935                 lookup_instantiate_filp(nd, dentry, NULL);
 936         }
 937 #else
 938         ll_release_openhandle(dentry,it);
 939 #endif
 940
 941 out:
 942         ll_intent_release(it);
 943         OBD_FREE(it, sizeof(*it));
 944
 945         return rc;
 946 }
 947 #else
 948 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 949                         int mode, struct nameidata *nd)
 950 {
 951         if (!nd || !nd->intent.d.lustre.it_disposition)
 952                 /* No saved request? Just mknod the file */
 953                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 954
 955         return ll_create_it(dir, dentry, mode, &nd->intent);
 956 }
 957 #endif
 958
 959 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 960                               const char *tgt, struct dentry *dchild)
 961 {
 962         int err;
 963         ENTRY;
 964
 965         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 966                name->len, name->name, dir->i_ino, dir->i_generation,
 967                dir, 3000, tgt);
 968
 969         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 970                           0, dchild, LUSTRE_OPC_SYMLINK);
 971         RETURN(err);
 972 }
 973
 974 static int ll_link_generic(struct inode *src,  struct inode *dir,
 975                            struct qstr *name, struct dentry *dchild)
 976 {
 977         struct ll_sb_info *sbi = ll_i2sbi(dir);
 978         struct ptlrpc_request *request = NULL;
 979         struct md_op_data *op_data;
 980         int err;
 981
 982         ENTRY;
 983         CDEBUG(D_VFSTRACE,
 984                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 985                src->i_ino, src->i_generation, src, dir->i_ino,
 986                dir->i_generation, dir, name->len, name->name);
 987
 988         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 989                                      0, LUSTRE_OPC_ANY, NULL);
 990         if (IS_ERR(op_data))
 991                 RETURN(PTR_ERR(op_data));
 992
 993         err = md_link(sbi->ll_md_exp, op_data, &request);
 994         ll_finish_md_op_data(op_data);
 995         if (err)
 996                 GOTO(out, err);
 997         if (dchild)
 998                 d_drop(dchild);
 999
1000         ll_update_times(request, dir);
1001         EXIT;
1002 out:
1003         ptlrpc_req_finished(request);
1004         RETURN(err);
1005 }
1006
1007 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
1008                             int mode, struct dentry *dchild)
1009
1010 {
1011         int err;
1012         ENTRY;
1013
1014         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1015                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1016
1017         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1018         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
1019
1020         RETURN(err);
1021 }
1022
1023 /* Try to find the child dentry by its name.
1024    If found, put the result fid into @fid. */
1025 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1026                              struct lu_fid *fid)
1027 {
1028         struct dentry *parent, *child;
1029
1030         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1031         child = d_lookup(parent, name);
1032         if (child) {
1033                 if (child->d_inode)
1034                         *fid = *ll_inode2fid(child->d_inode);
1035                 dput(child);
1036         }
1037 }
1038
1039 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1040                             struct dentry *dchild, struct qstr *name)
1041 {
1042         struct ptlrpc_request *request = NULL;
1043         struct md_op_data *op_data;
1044         int rc;
1045         ENTRY;
1046
1047         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1048                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1049
1050         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1051                 RETURN(-EBUSY);
1052
1053         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1054                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1055         if (IS_ERR(op_data))
1056                 RETURN(PTR_ERR(op_data));
1057
1058         ll_get_child_fid(dir, name, &op_data->op_fid3);
1059         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1060         ll_finish_md_op_data(op_data);
1061         if (rc == 0)
1062                 ll_update_times(request, dir);
1063         ptlrpc_req_finished(request);
1064         RETURN(rc);
1065 }
1066
1067 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1068 {
1069         struct mdt_body *body;
1070         struct lov_mds_md *eadata;
1071         struct lov_stripe_md *lsm = NULL;
1072         struct obd_trans_info oti = { 0 };
1073         struct obdo *oa;
1074         struct obd_capa *oc = NULL;
1075         int rc;
1076         ENTRY;
1077
1078         /* req is swabbed so this is safe */
1079         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1080         if (!(body->valid & OBD_MD_FLEASIZE))
1081                 RETURN(0);
1082
1083         if (body->eadatasize == 0) {
1084                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1085                 GOTO(out, rc = -EPROTO);
1086         }
1087
1088         /* The MDS sent back the EA because we unlinked the last reference
1089          * to this file. Use this EA to unlink the objects on the OST.
1090          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1091          * check it is complete and sensible. */
1092         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1093                                               body->eadatasize);
1094         LASSERT(eadata != NULL);
1095
1096         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1097         if (rc < 0) {
1098                 CERROR("obd_unpackmd: %d\n", rc);
1099                 GOTO(out, rc);
1100         }
1101         LASSERT(rc >= sizeof(*lsm));
1102
1103         OBDO_ALLOC(oa);
1104         if (oa == NULL)
1105                 GOTO(out_free_memmd, rc = -ENOMEM);
1106
1107         oa->o_id = lsm->lsm_object_id;
1108         oa->o_gr = lsm->lsm_object_gr;
1109         oa->o_mode = body->mode & S_IFMT;
1110         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1111
1112         if (body->valid & OBD_MD_FLCOOKIE) {
1113                 oa->o_valid |= OBD_MD_FLCOOKIE;
1114                 oti.oti_logcookies =
1115                         req_capsule_server_sized_get(&request->rq_pill,
1116                                                      &RMF_LOGCOOKIES,
1117                                                    sizeof(struct llog_cookie) *
1118                                                      lsm->lsm_stripe_count);
1119                 if (oti.oti_logcookies == NULL) {
1120                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1121                         body->valid &= ~OBD_MD_FLCOOKIE;
1122                 }
1123         }
1124
1125         if (body->valid & OBD_MD_FLOSSCAPA) {
1126                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1127                 if (rc)
1128                         GOTO(out_free_memmd, rc);
1129         }
1130
1131         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1132         capa_put(oc);
1133         OBDO_FREE(oa);
1134         if (rc)
1135                 CERROR("obd destroy objid "LPX64" error %d\n",
1136                        lsm->lsm_object_id, rc);
1137  out_free_memmd:
1138         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1139  out:
1140         return rc;
1141 }
1142
1143 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1144                              struct dentry *dchild, struct qstr *name)
1145 {
1146         struct ptlrpc_request *request = NULL;
1147         struct md_op_data *op_data;
1148         int rc;
1149         ENTRY;
1150         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1151                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1152
1153         /*
1154          * XXX: unlink bind mountpoint maybe call to here,
1155          * just check it as vfs_unlink does.
1156          */
1157         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1158                 RETURN(-EBUSY);
1159
1160         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1161                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1162         if (IS_ERR(op_data))
1163                 RETURN(PTR_ERR(op_data));
1164
1165         ll_get_child_fid(dir, name, &op_data->op_fid3);
1166         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1167         ll_finish_md_op_data(op_data);
1168         if (rc)
1169                 GOTO(out, rc);
1170
1171         ll_update_times(request, dir);
1172
1173         rc = ll_objects_destroy(request, dir);
1174  out:
1175         ptlrpc_req_finished(request);
1176         RETURN(rc);
1177 }
1178
1179 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1180                              struct dentry *src_dchild, struct qstr *src_name,
1181                              struct inode *tgt, struct dentry *tgt_dparent,
1182                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1183 {
1184         struct ptlrpc_request *request = NULL;
1185         struct ll_sb_info *sbi = ll_i2sbi(src);
1186         struct md_op_data *op_data;
1187         int err;
1188         ENTRY;
1189         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1190                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1191                src->i_ino, src->i_generation, src, tgt_name->len,
1192                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1193
1194         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1195             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1196                 RETURN(-EBUSY);
1197
1198         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1199                                      LUSTRE_OPC_ANY, NULL);
1200         if (IS_ERR(op_data))
1201                 RETURN(PTR_ERR(op_data));
1202
1203         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1204         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1205         err = md_rename(sbi->ll_md_exp, op_data,
1206                         src_name->name, src_name->len,
1207                         tgt_name->name, tgt_name->len, &request);
1208         ll_finish_md_op_data(op_data);
1209         if (!err) {
1210                 ll_update_times(request, src);
1211                 ll_update_times(request, tgt);
1212                 err = ll_objects_destroy(request, src);
1213         }
1214
1215         ptlrpc_req_finished(request);
1216
1217         RETURN(err);
1218 }
1219
1220 #ifdef HAVE_VFS_INTENT_PATCHES
1221 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1222 {
1223         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1224 }
1225 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1226 {
1227         return ll_rename_generic(srcnd->dentry->d_inode, srcnd->dentry,
1228                                  NULL, &srcnd->last,
1229                                  tgtnd->dentry->d_inode, tgtnd->dentry,
1230                                  NULL, &tgtnd->last);
1231 }
1232 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1233 {
1234         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1235                                &tgtnd->last, NULL);
1236 }
1237 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1238 {
1239         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1240 }
1241 static int ll_rmdir_raw(struct nameidata *nd)
1242 {
1243         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, NULL,
1244                                 &nd->last);
1245 }
1246 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1247 {
1248         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1249 }
1250 static int ll_unlink_raw(struct nameidata *nd)
1251 {
1252         return ll_unlink_generic(nd->dentry->d_inode, nd->dentry, NULL,
1253                                  &nd->last);
1254 }
1255 #endif
1256
1257 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1258                     ll_dev_t rdev)
1259 {
1260         return ll_mknod_generic(dir, &dchild->d_name, mode,
1261                                 old_encode_dev(rdev), dchild);
1262 }
1263
1264 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1265 {
1266         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1267 }
1268 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1269 {
1270         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1271 }
1272 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1273 {
1274         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1275 }
1276 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1277                       const char *oldname)
1278 {
1279         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1280 }
1281 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1282                    struct dentry *new_dentry)
1283 {
1284         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1285                                new_dentry);
1286 }
1287 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1288                      struct inode *new_dir, struct dentry *new_dentry)
1289 {
1290         int err;
1291         err = ll_rename_generic(old_dir, NULL,
1292                                  old_dentry, &old_dentry->d_name,
1293                                  new_dir, NULL, new_dentry,
1294                                  &new_dentry->d_name);
1295         if (!err) {
1296 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1297                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1298 #endif
1299                         d_move(old_dentry, new_dentry);
1300         }
1301         return err;
1302 }
1303
1304 struct inode_operations ll_dir_inode_operations = {
1305 #ifdef HAVE_VFS_INTENT_PATCHES
1306         .link_raw           = ll_link_raw,
1307         .unlink_raw         = ll_unlink_raw,
1308         .symlink_raw        = ll_symlink_raw,
1309         .mkdir_raw          = ll_mkdir_raw,
1310         .rmdir_raw          = ll_rmdir_raw,
1311         .mknod_raw          = ll_mknod_raw,
1312         .rename_raw         = ll_rename_raw,
1313         .setattr            = ll_setattr,
1314         .setattr_raw        = ll_setattr_raw,
1315 #endif
1316         .mknod              = ll_mknod,
1317         .lookup             = ll_lookup_nd,
1318         .create             = ll_create_nd,
1319         /* We need all these non-raw things for NFSD, to not patch it. */
1320         .unlink             = ll_unlink,
1321         .mkdir              = ll_mkdir,
1322         .rmdir              = ll_rmdir,
1323         .symlink            = ll_symlink,
1324         .link               = ll_link,
1325         .rename             = ll_rename,
1326         .setattr            = ll_setattr,
1327         .getattr            = ll_getattr,
1328         .permission         = ll_inode_permission,
1329         .setxattr           = ll_setxattr,
1330         .getxattr           = ll_getxattr,
1331         .listxattr          = ll_listxattr,
1332         .removexattr        = ll_removexattr,
1333 };
1334
1335 struct inode_operations ll_special_inode_operations = {
1336 #ifdef HAVE_VFS_INTENT_PATCHES
1337         .setattr_raw    = ll_setattr_raw,
1338 #endif
1339         .setattr        = ll_setattr,
1340         .getattr        = ll_getattr,
1341         .permission     = ll_inode_permission,
1342         .setxattr       = ll_setxattr,
1343         .getxattr       = ll_getxattr,
1344         .listxattr      = ll_listxattr,
1345         .removexattr    = ll_removexattr,
1346 };