lustre/llite/namei.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Whamcloud, Inc.
  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 #include <linux/security.h>
  45
  46 #define DEBUG_SUBSYSTEM S_LLITE
  47
  48 #include <obd_support.h>
  49 #include <lustre_fid.h>
  50 #include <lustre_lite.h>
  51 #include <lustre_dlm.h>
  52 #include <lustre_ver.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         if (unlikely(!(body->valid & OBD_MD_FLTYPE))) {
 115                 CERROR("Can not initialize inode "DFID" without object type: "
 116                        "valid = "LPX64"\n", PFID(&lli->lli_fid), body->valid);
 117                 return -EINVAL;
 118         }
 119
 120         inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mode & S_IFMT);
 121         if (unlikely(inode->i_mode == 0)) {
 122                 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
 123                 return -EINVAL;
 124         }
 125
 126         ll_lli_init(lli);
 127
 128         return 0;
 129 }
 130
 131
 132 /*
 133  * Get an inode by inode number (already instantiated by the intent lookup).
 134  * Returns inode or NULL
 135  */
 136 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 137                       struct lustre_md *md)
 138 {
 139         struct inode         *inode;
 140         ENTRY;
 141
 142         LASSERT(hash != 0);
 143         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 144
 145         if (inode) {
 146                 if (inode->i_state & I_NEW) {
 147                         int rc = 0;
 148
 149                         ll_read_inode2(inode, md);
 150                         if (S_ISREG(inode->i_mode) &&
 151                             ll_i2info(inode)->lli_clob == NULL)
 152                                 rc = cl_file_inode_init(inode, md);
 153                         if (rc != 0) {
 154                                 md->lsm = NULL;
 155                                 make_bad_inode(inode);
 156                                 unlock_new_inode(inode);
 157                                 iput(inode);
 158                                 inode = ERR_PTR(rc);
 159                         } else
 160                                 unlock_new_inode(inode);
 161                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 162                         ll_update_inode(inode, md);
 163                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 164                        inode, PFID(&md->body->fid1));
 165         }
 166         RETURN(inode);
 167 }
 168
 169 static void ll_drop_negative_dentry(struct inode *dir)
 170 {
 171         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 172
 173         cfs_spin_lock(&ll_lookup_lock);
 174         spin_lock(&dcache_lock);
 175 restart:
 176         list_for_each_entry_safe(dentry, tmp_alias,
 177                                  &dir->i_dentry,d_alias) {
 178                 if (!list_empty(&dentry->d_subdirs)) {
 179                         struct dentry *child;
 180                         list_for_each_entry_safe(child, tmp_subdir,
 181                                                  &dentry->d_subdirs,
 182                                                  d_child) {
 183                                 /* XXX Print some debug here? */
 184                                 if (!child->d_inode)
 185                                 /* Negative dentry. If we were
 186                                    dropping dcache lock, go
 187                                    throught the list again */
 188                                         if (ll_drop_dentry(child))
 189                                                 goto restart;
 190                         }
 191                 }
 192         }
 193         spin_unlock(&dcache_lock);
 194         cfs_spin_unlock(&ll_lookup_lock);
 195 }
 196
 197
 198 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 199                        void *data, int flag)
 200 {
 201         int rc;
 202         struct lustre_handle lockh;
 203         ENTRY;
 204
 205         switch (flag) {
 206         case LDLM_CB_BLOCKING:
 207                 ldlm_lock2handle(lock, &lockh);
 208                 rc = ldlm_cli_cancel(&lockh);
 209                 if (rc < 0) {
 210                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 211                         RETURN(rc);
 212                 }
 213                 break;
 214         case LDLM_CB_CANCELING: {
 215                 struct inode *inode = ll_inode_from_lock(lock);
 216                 struct ll_inode_info *lli;
 217                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 218                 struct lu_fid *fid;
 219                 ldlm_mode_t mode = lock->l_req_mode;
 220
 221                 /* Invalidate all dentries associated with this inode */
 222                 if (inode == NULL)
 223                         break;
 224
 225                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 226                 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
 227                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE))
 228                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
 229
 230                 if (bits & MDS_INODELOCK_OPEN)
 231                         ll_have_md_lock(inode, &bits, mode);
 232
 233                 fid = ll_inode2fid(inode);
 234                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 235                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 236                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 237                         LDLM_ERROR(lock, "data mismatch with object "
 238                                    DFID" (%p)", PFID(fid), inode);
 239                 }
 240
 241                 if (bits & MDS_INODELOCK_OPEN) {
 242                         int flags = 0;
 243                         switch (lock->l_req_mode) {
 244                         case LCK_CW:
 245                                 flags = FMODE_WRITE;
 246                                 break;
 247                         case LCK_PR:
 248                                 flags = FMODE_EXEC;
 249                                 break;
 250                         case LCK_CR:
 251                                 flags = FMODE_READ;
 252                                 break;
 253                         default:
 254                                 CERROR("Unexpected lock mode for OPEN lock "
 255                                        "%d, inode %ld\n", lock->l_req_mode,
 256                                        inode->i_ino);
 257                         }
 258                         ll_md_real_close(inode, flags);
 259                 }
 260
 261                 lli = ll_i2info(inode);
 262                 if (bits & MDS_INODELOCK_UPDATE)
 263                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 264
 265                 if (S_ISDIR(inode->i_mode) &&
 266                      (bits & MDS_INODELOCK_UPDATE)) {
 267                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 268                                inode->i_ino);
 269                         truncate_inode_pages(inode->i_mapping, 0);
 270                         ll_drop_negative_dentry(inode);
 271                 }
 272
 273                 if (inode->i_sb->s_root &&
 274                     inode != inode->i_sb->s_root->d_inode &&
 275                     (bits & MDS_INODELOCK_LOOKUP))
 276                         ll_unhash_aliases(inode);
 277                 iput(inode);
 278                 break;
 279         }
 280         default:
 281                 LBUG();
 282         }
 283
 284         RETURN(0);
 285 }
 286
 287 __u32 ll_i2suppgid(struct inode *i)
 288 {
 289         if (cfs_curproc_is_in_groups(i->i_gid))
 290                 return (__u32)i->i_gid;
 291         else
 292                 return (__u32)(-1);
 293 }
 294
 295 /* Pack the required supplementary groups into the supplied groups array.
 296  * If we don't need to use the groups from the target inode(s) then we
 297  * instead pack one or more groups from the user's supplementary group
 298  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 299 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 300 {
 301 #if 0
 302         int i;
 303 #endif
 304
 305         LASSERT(i1 != NULL);
 306         LASSERT(suppgids != NULL);
 307
 308         suppgids[0] = ll_i2suppgid(i1);
 309
 310         if (i2)
 311                 suppgids[1] = ll_i2suppgid(i2);
 312                 else
 313                         suppgids[1] = -1;
 314
 315 #if 0
 316         for (i = 0; i < current_ngroups; i++) {
 317                 if (suppgids[0] == -1) {
 318                         if (current_groups[i] != suppgids[1])
 319                                 suppgids[0] = current_groups[i];
 320                         continue;
 321                 }
 322                 if (suppgids[1] == -1) {
 323                         if (current_groups[i] != suppgids[0])
 324                                 suppgids[1] = current_groups[i];
 325                         continue;
 326                 }
 327                 break;
 328         }
 329 #endif
 330 }
 331
 332 static void ll_d_add(struct dentry *de, struct inode *inode)
 333 {
 334         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 335         /* d_instantiate */
 336         if (!list_empty(&de->d_alias)) {
 337                 spin_unlock(&dcache_lock);
 338                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 339                        de->d_name.len, de->d_name.name, de,
 340                        de->d_alias.next, de->d_alias.prev);
 341                 LBUG();
 342         }
 343         if (inode)
 344                 list_add(&de->d_alias, &inode->i_dentry);
 345         de->d_inode = inode;
 346
 347         /* d_rehash */
 348         if (!d_unhashed(de)) {
 349                 spin_unlock(&dcache_lock);
 350                 CERROR("dentry %.*s %p hash next %p\n",
 351                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 352                 LBUG();
 353         }
 354 }
 355
 356 /* Search "inode"'s alias list for a dentry that has the same name and parent
 357  * as de.  If found, return it.  If not found, return de.
 358  * Lustre can't use d_add_unique because don't unhash aliases for directory
 359  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 360  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 361  */
 362 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 363 {
 364         struct list_head *tmp;
 365         struct dentry *dentry;
 366         struct dentry *last_discon = NULL;
 367
 368         cfs_spin_lock(&ll_lookup_lock);
 369         spin_lock(&dcache_lock);
 370         list_for_each(tmp, &inode->i_dentry) {
 371                 dentry = list_entry(tmp, struct dentry, d_alias);
 372
 373                 /* We are called here with 'de' already on the aliases list. */
 374                 if (unlikely(dentry == de)) {
 375                         CERROR("whoops\n");
 376                         continue;
 377                 }
 378
 379                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 380                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
 381                         last_discon = dentry;
 382                         continue;
 383                 }
 384
 385                 if (dentry->d_parent != de->d_parent)
 386                         continue;
 387
 388                 if (dentry->d_name.hash != de->d_name.hash)
 389                         continue;
 390
 391                 if (dentry->d_name.len != de->d_name.len)
 392                         continue;
 393
 394                 if (memcmp(dentry->d_name.name, de->d_name.name,
 395                            de->d_name.len) != 0)
 396                         continue;
 397
 398                 dget_locked(dentry);
 399                 ll_dops_init(dentry, 0, 1);
 400                 ll_dentry_rehash(dentry, 1);
 401                 spin_unlock(&dcache_lock);
 402                 cfs_spin_unlock(&ll_lookup_lock);
 403                 iput(inode);
 404                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 405                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 406                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 407                 return dentry;
 408         }
 409
 410         if (last_discon) {
 411                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 412                         "refc %d\n", last_discon, last_discon->d_inode,
 413                         atomic_read(&last_discon->d_count));
 414                 dget_locked(last_discon);
 415                 lock_dentry(last_discon);
 416                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 417                 unlock_dentry(last_discon);
 418                 spin_unlock(&dcache_lock);
 419                 cfs_spin_unlock(&ll_lookup_lock);
 420                 ll_dops_init(last_discon, 1, 1);
 421                 d_rehash(de);
 422                 d_move(last_discon, de);
 423                 iput(inode);
 424                 return last_discon;
 425         }
 426         lock_dentry(de);
 427         de->d_flags |= DCACHE_LUSTRE_INVALID;
 428         unlock_dentry(de);
 429         ll_d_add(de, inode);
 430         spin_unlock(&dcache_lock);
 431         cfs_spin_unlock(&ll_lookup_lock);
 432
 433         security_d_instantiate(de, inode);
 434         d_rehash(de);
 435
 436         return de;
 437 }
 438
 439 int ll_lookup_it_finish(struct ptlrpc_request *request,
 440                         struct lookup_intent *it, void *data)
 441 {
 442         struct it_cb_data *icbd = data;
 443         struct dentry **de = icbd->icbd_childp;
 444         struct inode *parent = icbd->icbd_parent;
 445         struct inode *inode = NULL;
 446         int rc;
 447         ENTRY;
 448
 449         /* NB 1 request reference will be taken away by ll_intent_lock()
 450          * when I return */
 451         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 452                 struct dentry *save = *de;
 453                 __u64 bits = 0;
 454
 455                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 456                 if (rc)
 457                         RETURN(rc);
 458
 459                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
 460
 461                 /* We used to query real size from OSTs here, but actually
 462                    this is not needed. For stat() calls size would be updated
 463                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 464                    2.4 and
 465                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 466                    Everybody else who needs correct file size would call
 467                    ll_glimpse_size or some equivalent themselves anyway.
 468                    Also see bug 7198. */
 469                 ll_dops_init(*de, 1, 1);
 470                 *de = ll_find_alias(inode, *de);
 471                 if (*de != save) {
 472                         struct ll_dentry_data *lld = ll_d2d(*de);
 473
 474                         /* just make sure the ll_dentry_data is ready */
 475                         if (unlikely(lld == NULL))
 476                                 ll_dops_init(*de, 1, 1);
 477                 }
 478                 /* we have lookup look - unhide dentry */
 479                 ll_dentry_reset_flags(*de, bits);
 480         } else {
 481                 struct lookup_intent parent_it = {
 482                                         .it_op = IT_GETATTR,
 483                                         .d.lustre.it_lock_handle = 0 };
 484
 485                 ll_dops_init(*de, 1, 1);
 486                 /* Check that parent has UPDATE lock. If there is none, we
 487                    cannot afford to hash this dentry (done by ll_d_add) as it
 488                    might get picked up later when UPDATE lock will appear;
 489                    otherwise, add ref to the parent UPDATE lock, to make sure
 490                    ll_d_add() undergoes with parent's UPDATE lock held */
 491                 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
 492                                        &ll_i2info(parent)->lli_fid, NULL)) {
 493                         spin_lock(&dcache_lock);
 494                         ll_d_add(*de, NULL);
 495                         spin_unlock(&dcache_lock);
 496                         security_d_instantiate(*de, inode);
 497                         d_rehash(*de);
 498                         ll_intent_release(&parent_it);
 499                 } else {
 500                         /* negative lookup - and don't have update lock to
 501                          * parent */
 502                         lock_dentry(*de);
 503                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 504                         unlock_dentry(*de);
 505
 506                         (*de)->d_inode = NULL;
 507                         /* We do not want to hash the dentry if don`t have a
 508                          * lock, but if this dentry is later used in d_move,
 509                          * we'd hit uninitialised list head d_hash, so we just
 510                          * do this to init d_hash field but leave dentry
 511                          * unhashed. (bug 10796). */
 512                         d_rehash(*de);
 513                         d_drop(*de);
 514                 }
 515         }
 516
 517         RETURN(0);
 518 }
 519
 520 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 521                                    struct lookup_intent *it, int lookup_flags)
 522 {
 523         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 524         struct dentry *save = dentry, *retval;
 525         struct ptlrpc_request *req = NULL;
 526         struct md_op_data *op_data;
 527         struct it_cb_data icbd;
 528         __u32 opc;
 529         int rc;
 530         ENTRY;
 531
 532         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 533                 RETURN(ERR_PTR(-ENAMETOOLONG));
 534
 535         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 536                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 537                parent->i_generation, parent, LL_IT2STR(it));
 538
 539         if (d_mountpoint(dentry))
 540                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 541
 542         ll_frob_intent(&it, &lookup_it);
 543
 544         /* As do_lookup is called before follow_mount, root dentry may be left
 545          * not valid, revalidate it here. */
 546         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 547             (it->it_op & (IT_OPEN | IT_CREAT))) {
 548                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
 549                                             MDS_INODELOCK_LOOKUP);
 550                 if (rc)
 551                         RETURN(ERR_PTR(rc));
 552         }
 553
 554         if (it->it_op == IT_GETATTR) {
 555                 rc = ll_statahead_enter(parent, &dentry, 0);
 556                 if (rc == 1) {
 557                         if (dentry == save)
 558                                 GOTO(out, retval = NULL);
 559                         GOTO(out, retval = dentry);
 560                 }
 561         }
 562
 563         icbd.icbd_childp = &dentry;
 564         icbd.icbd_parent = parent;
 565
 566         if (it->it_op & IT_CREAT ||
 567             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 568                 opc = LUSTRE_OPC_CREATE;
 569         else
 570                 opc = LUSTRE_OPC_ANY;
 571
 572         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 573                                      dentry->d_name.len, lookup_flags, opc,
 574                                      NULL);
 575         if (IS_ERR(op_data))
 576                 RETURN((void *)op_data);
 577
 578         it->it_create_mode &= ~cfs_curproc_umask();
 579
 580         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 581                             lookup_flags, &req, ll_md_blocking_ast, 0);
 582         ll_finish_md_op_data(op_data);
 583         if (rc < 0)
 584                 GOTO(out, retval = ERR_PTR(rc));
 585
 586         rc = ll_lookup_it_finish(req, it, &icbd);
 587         if (rc != 0) {
 588                 ll_intent_release(it);
 589                 GOTO(out, retval = ERR_PTR(rc));
 590         }
 591
 592         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 593             !S_ISREG(dentry->d_inode->i_mode) &&
 594             !S_ISDIR(dentry->d_inode->i_mode)) {
 595                 ll_release_openhandle(dentry, it);
 596         }
 597         ll_lookup_finish_locks(it, dentry);
 598
 599         if (dentry == save)
 600                 GOTO(out, retval = NULL);
 601         else
 602                 GOTO(out, retval = dentry);
 603  out:
 604         if (req)
 605                 ptlrpc_req_finished(req);
 606         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
 607                 ll_statahead_mark(parent, dentry);
 608         return retval;
 609 }
 610
 611 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 612                                         int lookup_flags)
 613 {
 614         struct lookup_intent *it;
 615
 616         OBD_ALLOC(it, sizeof(*it));
 617         if (!it)
 618                 return ERR_PTR(-ENOMEM);
 619
 620         if (lookup_flags & LOOKUP_OPEN) {
 621                 it->it_op = IT_OPEN;
 622                 if (lookup_flags & LOOKUP_CREATE)
 623                         it->it_op |= IT_CREAT;
 624                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
 625                 it->it_flags = oit->flags;
 626         } else {
 627                 it->it_op = IT_GETATTR;
 628         }
 629
 630         return it;
 631 }
 632
 633 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 634                                    struct nameidata *nd)
 635 {
 636         struct dentry *de;
 637         ENTRY;
 638
 639         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 640                 struct lookup_intent *it;
 641
 642 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
 643                 /* Did we came here from failed revalidate just to propagate
 644                  * its error? */
 645                 if (nd->flags & LOOKUP_OPEN)
 646                         if (IS_ERR(nd->intent.open.file))
 647                                 RETURN((struct dentry *)nd->intent.open.file);
 648 #endif
 649                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 650                         it = ll_d2d(dentry)->lld_it;
 651                         ll_d2d(dentry)->lld_it = NULL;
 652                 } else {
 653                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 654                                 /* We are sure this is new dentry, so we need to create
 655                                    our private data and set the dentry ops */
 656                                 ll_dops_init(dentry, 1, 1);
 657                                 RETURN(NULL);
 658                         }
 659                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 660                         if (IS_ERR(it))
 661                                 RETURN((struct dentry *)it);
 662                 }
 663
 664                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 665                 if (de)
 666                         dentry = de;
 667                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 668                         if (dentry->d_inode &&
 669                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 670                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 671                                         // We cannot call open here as it would
 672                                         // deadlock.
 673                                         ptlrpc_req_finished(
 674                                                        (struct ptlrpc_request *)
 675                                                           it->d.lustre.it_data);
 676                                 } else {
 677                                         struct file *filp;
 678
 679                                         nd->intent.open.file->private_data = it;
 680                                         filp = lookup_instantiate_filp(nd,
 681                                                                        dentry,
 682                                                                        NULL);
 683                                         if (IS_ERR(filp)) {
 684                                                 if (de)
 685                                                         dput(de);
 686                                                 de = (struct dentry *)filp;
 687                                         }
 688                                 }
 689                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 690                                 // XXX This can only reliably work on assumption
 691                                 // that there are NO hashed negative dentries.
 692                                 ll_d2d(dentry)->lld_it = it;
 693                                 it = NULL; /* Will be freed in ll_create_nd */
 694                                 /* We absolutely depend on ll_create_nd to be
 695                                  * called to not leak this intent and possible
 696                                  * data attached to it */
 697                         }
 698                 }
 699
 700                 if (it) {
 701                         ll_intent_release(it);
 702                         OBD_FREE(it, sizeof(*it));
 703                 }
 704         } else {
 705                 de = ll_lookup_it(parent, dentry, NULL, 0);
 706         }
 707
 708         RETURN(de);
 709 }
 710
 711 /* We depend on "mode" being set with the proper file type/umask by now */
 712 static struct inode *ll_create_node(struct inode *dir, const char *name,
 713                                     int namelen, const void *data, int datalen,
 714                                     int mode, __u64 extra,
 715                                     struct lookup_intent *it)
 716 {
 717         struct inode *inode = NULL;
 718         struct ptlrpc_request *request = NULL;
 719         struct ll_sb_info *sbi = ll_i2sbi(dir);
 720         int rc;
 721         ENTRY;
 722
 723         LASSERT(it && it->d.lustre.it_disposition);
 724
 725         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 726         request = it->d.lustre.it_data;
 727         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 728         rc = ll_prep_inode(&inode, request, dir->i_sb);
 729         if (rc)
 730                 GOTO(out, inode = ERR_PTR(rc));
 731
 732         LASSERT(list_empty(&inode->i_dentry));
 733
 734         /* We asked for a lock on the directory, but were granted a
 735          * lock on the inode.  Since we finally have an inode pointer,
 736          * stuff it in the lock. */
 737         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 738                inode, inode->i_ino, inode->i_generation);
 739         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
 740         EXIT;
 741  out:
 742         ptlrpc_req_finished(request);
 743         return inode;
 744 }
 745
 746 /*
 747  * By the time this is called, we already have created the directory cache
 748  * entry for the new file, but it is so far negative - it has no inode.
 749  *
 750  * We defer creating the OBD object(s) until open, to keep the intent and
 751  * non-intent code paths similar, and also because we do not have the MDS
 752  * inode number before calling ll_create_node() (which is needed for LOV),
 753  * so we would need to do yet another RPC to the MDS to store the LOV EA
 754  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 755  * lmm_size in datalen (the MDS still has code which will handle that).
 756  *
 757  * If the create succeeds, we fill in the inode information
 758  * with d_instantiate().
 759  */
 760 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 761                         struct lookup_intent *it)
 762 {
 763         struct inode *inode;
 764         int rc = 0;
 765         ENTRY;
 766
 767         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 768                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 769                dir->i_generation, dir, LL_IT2STR(it));
 770
 771         rc = it_open_error(DISP_OPEN_CREATE, it);
 772         if (rc)
 773                 RETURN(rc);
 774
 775         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 776                                NULL, 0, mode, 0, it);
 777         if (IS_ERR(inode))
 778                 RETURN(PTR_ERR(inode));
 779
 780         d_instantiate(dentry, inode);
 781         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 782          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 783          * successful create. Hash it here. */
 784         spin_lock(&dcache_lock);
 785         if (d_unhashed(dentry))
 786                 d_rehash_cond(dentry, 0);
 787         spin_unlock(&dcache_lock);
 788         RETURN(0);
 789 }
 790
 791 static void ll_update_times(struct ptlrpc_request *request,
 792                             struct inode *inode)
 793 {
 794         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 795                                                        &RMF_MDT_BODY);
 796
 797         LASSERT(body);
 798         if (body->valid & OBD_MD_FLMTIME &&
 799             body->mtime > LTIME_S(inode->i_mtime)) {
 800                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 801                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 802                 LTIME_S(inode->i_mtime) = body->mtime;
 803         }
 804         if (body->valid & OBD_MD_FLCTIME &&
 805             body->ctime > LTIME_S(inode->i_ctime))
 806                 LTIME_S(inode->i_ctime) = body->ctime;
 807 }
 808
 809 static int ll_new_node(struct inode *dir, struct qstr *name,
 810                        const char *tgt, int mode, int rdev,
 811                        struct dentry *dchild, __u32 opc)
 812 {
 813         struct ptlrpc_request *request = NULL;
 814         struct md_op_data *op_data;
 815         struct inode *inode = NULL;
 816         struct ll_sb_info *sbi = ll_i2sbi(dir);
 817         int tgt_len = 0;
 818         int err;
 819
 820         ENTRY;
 821         if (unlikely(tgt != NULL))
 822                 tgt_len = strlen(tgt) + 1;
 823
 824         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 825                                      name->len, 0, opc, NULL);
 826         if (IS_ERR(op_data))
 827                 GOTO(err_exit, err = PTR_ERR(op_data));
 828
 829         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 830                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 831                         cfs_curproc_cap_pack(), rdev, &request);
 832         ll_finish_md_op_data(op_data);
 833         if (err)
 834                 GOTO(err_exit, err);
 835
 836         ll_update_times(request, dir);
 837
 838         if (dchild) {
 839                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 840                 if (err)
 841                      GOTO(err_exit, err);
 842
 843                 d_drop(dchild);
 844                 d_instantiate(dchild, inode);
 845         }
 846         EXIT;
 847 err_exit:
 848         ptlrpc_req_finished(request);
 849
 850         return err;
 851 }
 852
 853 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 854                             unsigned rdev, struct dentry *dchild)
 855 {
 856         int err;
 857         ENTRY;
 858
 859         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 860                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 861                mode, rdev);
 862
 863         mode &= ~cfs_curproc_umask();
 864
 865         switch (mode & S_IFMT) {
 866         case 0:
 867                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 868         case S_IFREG:
 869         case S_IFCHR:
 870         case S_IFBLK:
 871         case S_IFIFO:
 872         case S_IFSOCK:
 873                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 874                                   LUSTRE_OPC_MKNOD);
 875                 break;
 876         case S_IFDIR:
 877                 err = -EPERM;
 878                 break;
 879         default:
 880                 err = -EINVAL;
 881         }
 882
 883         if (!err)
 884                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
 885
 886         RETURN(err);
 887 }
 888
 889 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 890                         int mode, struct nameidata *nd)
 891 {
 892         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 893         int rc;
 894
 895         if (!it)
 896                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 897
 898         ll_d2d(dentry)->lld_it = NULL;
 899
 900         /* Was there an error? Propagate it! */
 901         if (it->d.lustre.it_status) {
 902                 rc = it->d.lustre.it_status;
 903                 goto out;
 904         }
 905
 906         rc = ll_create_it(dir, dentry, mode, it);
 907         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 908                 struct file *filp;
 909
 910                 nd->intent.open.file->private_data = it;
 911                 filp = lookup_instantiate_filp(nd, dentry, NULL);
 912                 if (IS_ERR(filp))
 913                         rc = PTR_ERR(filp);
 914         }
 915
 916 out:
 917         ll_intent_release(it);
 918         OBD_FREE(it, sizeof(*it));
 919
 920         if (!rc)
 921                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
 922
 923         return rc;
 924 }
 925
 926 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 927                               const char *tgt, struct dentry *dchild)
 928 {
 929         int err;
 930         ENTRY;
 931
 932         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 933                name->len, name->name, dir->i_ino, dir->i_generation,
 934                dir, 3000, tgt);
 935
 936         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 937                           0, dchild, LUSTRE_OPC_SYMLINK);
 938
 939         if (!err)
 940                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
 941
 942         RETURN(err);
 943 }
 944
 945 static int ll_link_generic(struct inode *src,  struct inode *dir,
 946                            struct qstr *name, struct dentry *dchild)
 947 {
 948         struct ll_sb_info *sbi = ll_i2sbi(dir);
 949         struct ptlrpc_request *request = NULL;
 950         struct md_op_data *op_data;
 951         int err;
 952
 953         ENTRY;
 954         CDEBUG(D_VFSTRACE,
 955                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 956                src->i_ino, src->i_generation, src, dir->i_ino,
 957                dir->i_generation, dir, name->len, name->name);
 958
 959         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 960                                      0, LUSTRE_OPC_ANY, NULL);
 961         if (IS_ERR(op_data))
 962                 RETURN(PTR_ERR(op_data));
 963
 964         err = md_link(sbi->ll_md_exp, op_data, &request);
 965         ll_finish_md_op_data(op_data);
 966         if (err)
 967                 GOTO(out, err);
 968         if (dchild)
 969                 d_drop(dchild);
 970
 971         ll_update_times(request, dir);
 972         ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
 973         EXIT;
 974 out:
 975         ptlrpc_req_finished(request);
 976         RETURN(err);
 977 }
 978
 979 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 980                             int mode, struct dentry *dchild)
 981
 982 {
 983         int err;
 984         ENTRY;
 985
 986         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 987                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 988
 989         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
 990         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 991
 992         if (!err)
 993                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
 994
 995         RETURN(err);
 996 }
 997
 998 /* Try to find the child dentry by its name.
 999    If found, put the result fid into @fid. */
1000 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1001                              struct lu_fid *fid)
1002 {
1003         struct dentry *parent, *child;
1004
1005         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1006         child = d_lookup(parent, name);
1007         if (child) {
1008                 if (child->d_inode)
1009                         *fid = *ll_inode2fid(child->d_inode);
1010                 dput(child);
1011         }
1012 }
1013
1014 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1015                             struct dentry *dchild, struct qstr *name)
1016 {
1017         struct ptlrpc_request *request = NULL;
1018         struct md_op_data *op_data;
1019         int rc;
1020         ENTRY;
1021
1022         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1023                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1024
1025         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1026                 RETURN(-EBUSY);
1027
1028         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1029                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1030         if (IS_ERR(op_data))
1031                 RETURN(PTR_ERR(op_data));
1032
1033         ll_get_child_fid(dir, name, &op_data->op_fid3);
1034         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1035         ll_finish_md_op_data(op_data);
1036         if (rc == 0) {
1037                 ll_update_times(request, dir);
1038                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
1039         }
1040
1041         ptlrpc_req_finished(request);
1042         RETURN(rc);
1043 }
1044
1045 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1046 {
1047         struct mdt_body *body;
1048         struct lov_mds_md *eadata;
1049         struct lov_stripe_md *lsm = NULL;
1050         struct obd_trans_info oti = { 0 };
1051         struct obdo *oa;
1052         struct obd_capa *oc = NULL;
1053         int rc;
1054         ENTRY;
1055
1056         /* req is swabbed so this is safe */
1057         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1058         if (!(body->valid & OBD_MD_FLEASIZE))
1059                 RETURN(0);
1060
1061         if (body->eadatasize == 0) {
1062                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1063                 GOTO(out, rc = -EPROTO);
1064         }
1065
1066         /* The MDS sent back the EA because we unlinked the last reference
1067          * to this file. Use this EA to unlink the objects on the OST.
1068          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1069          * check it is complete and sensible. */
1070         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1071                                               body->eadatasize);
1072         LASSERT(eadata != NULL);
1073
1074         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1075         if (rc < 0) {
1076                 CERROR("obd_unpackmd: %d\n", rc);
1077                 GOTO(out, rc);
1078         }
1079         LASSERT(rc >= sizeof(*lsm));
1080
1081         OBDO_ALLOC(oa);
1082         if (oa == NULL)
1083                 GOTO(out_free_memmd, rc = -ENOMEM);
1084
1085         oa->o_id = lsm->lsm_object_id;
1086         oa->o_seq = lsm->lsm_object_seq;
1087         oa->o_mode = body->mode & S_IFMT;
1088         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1089
1090         if (body->valid & OBD_MD_FLCOOKIE) {
1091                 oa->o_valid |= OBD_MD_FLCOOKIE;
1092                 oti.oti_logcookies =
1093                         req_capsule_server_sized_get(&request->rq_pill,
1094                                                      &RMF_LOGCOOKIES,
1095                                                    sizeof(struct llog_cookie) *
1096                                                      lsm->lsm_stripe_count);
1097                 if (oti.oti_logcookies == NULL) {
1098                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1099                         body->valid &= ~OBD_MD_FLCOOKIE;
1100                 }
1101         }
1102
1103         if (body->valid & OBD_MD_FLOSSCAPA) {
1104                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1105                 if (rc)
1106                         GOTO(out_free_memmd, rc);
1107         }
1108
1109         rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
1110                          ll_i2mdexp(dir), oc);
1111         capa_put(oc);
1112         OBDO_FREE(oa);
1113         if (rc)
1114                 CERROR("obd destroy objid "LPX64" error %d\n",
1115                        lsm->lsm_object_id, rc);
1116  out_free_memmd:
1117         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1118  out:
1119         return rc;
1120 }
1121
1122 /* ll_unlink_generic() doesn't update the inode with the new link count.
1123  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1124  * is any lock existing. They will recycle dentries and inodes based upon locks
1125  * too. b=20433 */
1126 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1127                              struct dentry *dchild, struct qstr *name)
1128 {
1129         struct ptlrpc_request *request = NULL;
1130         struct md_op_data *op_data;
1131         int rc;
1132         ENTRY;
1133         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1134                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1135
1136         /*
1137          * XXX: unlink bind mountpoint maybe call to here,
1138          * just check it as vfs_unlink does.
1139          */
1140         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1141                 RETURN(-EBUSY);
1142
1143         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1144                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1145         if (IS_ERR(op_data))
1146                 RETURN(PTR_ERR(op_data));
1147
1148         ll_get_child_fid(dir, name, &op_data->op_fid3);
1149         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1150         ll_finish_md_op_data(op_data);
1151         if (rc)
1152                 GOTO(out, rc);
1153
1154         ll_update_times(request, dir);
1155         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1156
1157         rc = ll_objects_destroy(request, dir);
1158  out:
1159         ptlrpc_req_finished(request);
1160         RETURN(rc);
1161 }
1162
1163 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1164                              struct dentry *src_dchild, struct qstr *src_name,
1165                              struct inode *tgt, struct dentry *tgt_dparent,
1166                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1167 {
1168         struct ptlrpc_request *request = NULL;
1169         struct ll_sb_info *sbi = ll_i2sbi(src);
1170         struct md_op_data *op_data;
1171         int err;
1172         ENTRY;
1173         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1174                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1175                src->i_ino, src->i_generation, src, tgt_name->len,
1176                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1177
1178         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1179             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1180                 RETURN(-EBUSY);
1181
1182         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1183                                      LUSTRE_OPC_ANY, NULL);
1184         if (IS_ERR(op_data))
1185                 RETURN(PTR_ERR(op_data));
1186
1187         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1188         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1189         err = md_rename(sbi->ll_md_exp, op_data,
1190                         src_name->name, src_name->len,
1191                         tgt_name->name, tgt_name->len, &request);
1192         ll_finish_md_op_data(op_data);
1193         if (!err) {
1194                 ll_update_times(request, src);
1195                 ll_update_times(request, tgt);
1196                 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1197                 err = ll_objects_destroy(request, src);
1198         }
1199
1200         ptlrpc_req_finished(request);
1201
1202         RETURN(err);
1203 }
1204
1205 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1206                     ll_dev_t rdev)
1207 {
1208         return ll_mknod_generic(dir, &dchild->d_name, mode,
1209                                 old_encode_dev(rdev), dchild);
1210 }
1211
1212 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1213 {
1214         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1215 }
1216 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1217 {
1218         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1219 }
1220 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1221 {
1222         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1223 }
1224 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1225                       const char *oldname)
1226 {
1227         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1228 }
1229 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1230                    struct dentry *new_dentry)
1231 {
1232         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1233                                new_dentry);
1234 }
1235 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1236                      struct inode *new_dir, struct dentry *new_dentry)
1237 {
1238         int err;
1239         err = ll_rename_generic(old_dir, NULL,
1240                                  old_dentry, &old_dentry->d_name,
1241                                  new_dir, NULL, new_dentry,
1242                                  &new_dentry->d_name);
1243         if (!err) {
1244 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1245                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1246 #endif
1247                         d_move(old_dentry, new_dentry);
1248         }
1249         return err;
1250 }
1251
1252 struct inode_operations ll_dir_inode_operations = {
1253         .mknod              = ll_mknod,
1254         .lookup             = ll_lookup_nd,
1255         .create             = ll_create_nd,
1256         /* We need all these non-raw things for NFSD, to not patch it. */
1257         .unlink             = ll_unlink,
1258         .mkdir              = ll_mkdir,
1259         .rmdir              = ll_rmdir,
1260         .symlink            = ll_symlink,
1261         .link               = ll_link,
1262         .rename             = ll_rename,
1263         .setattr            = ll_setattr,
1264         .getattr            = ll_getattr,
1265         .permission         = ll_inode_permission,
1266         .setxattr           = ll_setxattr,
1267         .getxattr           = ll_getxattr,
1268         .listxattr          = ll_listxattr,
1269         .removexattr        = ll_removexattr,
1270 };
1271
1272 struct inode_operations ll_special_inode_operations = {
1273         .setattr        = ll_setattr,
1274         .getattr        = ll_getattr,
1275         .permission     = ll_inode_permission,
1276         .setxattr       = ll_setxattr,
1277         .getxattr       = ll_getxattr,
1278         .listxattr      = ll_listxattr,
1279         .removexattr    = ll_removexattr,
1280 };