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_lite.h>
  49 #include <lustre_dlm.h>
  50 #include <linux/lustre_version.h>
  51 #include "llite_internal.h"
  52
  53 /* methods */
  54
  55 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  56 {
  57         ENTRY;
  58
  59         ldlm_lock_decref(lockh, mode);
  60
  61         RETURN(0);
  62 }
  63
  64 /* Get an inode by inode number (already instantiated by the intent lookup).
  65  * Returns inode or NULL
  66  */
  67
  68 static inline __u64 fid_flatten(const struct lu_fid *fid)
  69 {
  70         return (fid_seq(fid) - 1) * LUSTRE_SEQ_MAX_WIDTH + fid_oid(fid);
  71 }
  72 /* Build inode number on passed @fid */
  73 ino_t ll_fid_build_ino(struct ll_sb_info *sbi,
  74                        struct ll_fid *fid)
  75 {
  76         ino_t ino;
  77         ENTRY;
  78
  79         if (fid_is_igif((struct lu_fid*)fid)) {
  80                 ino = lu_igif_ino((struct lu_fid*)fid);
  81                 RETURN(ino);
  82         }
  83
  84         /*
  85          * Very stupid and having many downsides inode allocation algorithm
  86          * based on fid.
  87          */
  88         ino = fid_flatten((struct lu_fid*)fid) & 0xFFFFFFFF;
  89
  90         if (unlikely(ino == 0))
  91                 /* the first result ino is 0xFFC001, so this is rarely used */
  92                 ino = 0xffbcde;
  93         ino = ino | 0x80000000;
  94         RETURN(ino);
  95
  96 }
  97
  98 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  99 static int fid_test_inode(struct inode *inode, void *opaque)
 100 {
 101         struct lustre_md     *md = opaque;
 102
 103         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
 104                 CERROR("MDS body missing FID\n");
 105                 return 0;
 106         }
 107
 108         return lu_fid_eq(ll_inode_lu_fid(inode),
 109                          (struct lu_fid*)&md->body->fid1);
 110 }
 111
 112 static int fid_set_inode(struct inode *inode, void *opaque)
 113 {
 114         struct lustre_md     *md  = opaque;
 115
 116         *ll_inode_lu_fid(inode) = *((struct lu_fid*)&md->body->fid1);
 117         return 0;
 118 }
 119
 120 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 121                           struct lustre_md *md)
 122 {
 123         struct ll_inode_info *lli;
 124         struct inode         *inode;
 125         ENTRY;
 126
 127         LASSERT(hash != 0);
 128         inode = iget5_locked(sb, hash, fid_test_inode, fid_set_inode, md);
 129
 130         if (inode) {
 131                 lli = ll_i2info(inode);
 132                 if (inode->i_state & I_NEW) {
 133                         ll_read_inode2(inode, md);
 134                         unlock_new_inode(inode);
 135                 } else {
 136                         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 137                                 ll_update_inode(inode, md);
 138                 }
 139                 CDEBUG(D_VFSTRACE, "got inode: %lu/%u(%p) for "DFID"\n",
 140                        inode->i_ino, inode->i_generation, inode,
 141                        PFID(ll_inode_lu_fid(inode)));
 142         }
 143
 144         RETURN(inode);
 145 }
 146
 147 static void ll_drop_negative_dentry(struct inode *dir)
 148 {
 149         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 150
 151         spin_lock(&ll_lookup_lock);
 152         spin_lock(&dcache_lock);
 153 restart:
 154         list_for_each_entry_safe(dentry, tmp_alias,
 155                                  &dir->i_dentry,d_alias) {
 156                 if (!list_empty(&dentry->d_subdirs)) {
 157                         struct dentry *child;
 158                         list_for_each_entry_safe(child, tmp_subdir,
 159                                                  &dentry->d_subdirs,
 160                                                  d_child) {
 161                                 /* XXX Print some debug here? */
 162                                 if (!child->d_inode)
 163                                 /* Negative dentry. If we were
 164                                    dropping dcache lock, go
 165                                    throught the list again */
 166                                         if (ll_drop_dentry(child))
 167                                                 goto restart;
 168                         }
 169                 }
 170         }
 171         spin_unlock(&dcache_lock);
 172         spin_unlock(&ll_lookup_lock);
 173 }
 174
 175 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 176                         void *data, int flag)
 177 {
 178         int rc;
 179         struct lustre_handle lockh;
 180         ENTRY;
 181
 182         switch (flag) {
 183         case LDLM_CB_BLOCKING:
 184                 ldlm_lock2handle(lock, &lockh);
 185                 rc = ldlm_cli_cancel(&lockh);
 186                 if (rc < 0) {
 187                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 188                         RETURN(rc);
 189                 }
 190                 break;
 191         case LDLM_CB_CANCELING: {
 192                 struct inode *inode = ll_inode_from_lock(lock);
 193                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 194                 struct lu_fid *fid;
 195
 196                 /* Invalidate all dentries associated with this inode */
 197                 if (inode == NULL)
 198                         break;
 199
 200                 fid = ll_inode_lu_fid(inode);;
 201
 202                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 203                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 204                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 205                         bits &= ~MDS_INODELOCK_LOOKUP;
 206                 if ((bits & MDS_INODELOCK_UPDATE) &&
 207                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 208                         bits &= ~MDS_INODELOCK_UPDATE;
 209                 if ((bits & MDS_INODELOCK_OPEN) &&
 210                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 211                         bits &= ~MDS_INODELOCK_OPEN;
 212
 213                 if (!fid_res_name_eq(fid, &lock->l_resource->lr_name)) {
 214                         LDLM_ERROR(lock, "data mismatch with ino %lu/%u (%p)",
 215                                    inode->i_ino, inode->i_generation, inode);
 216                 }
 217
 218                 if (bits & MDS_INODELOCK_OPEN) {
 219                         int flags = 0;
 220                         switch (lock->l_req_mode) {
 221                         case LCK_CW:
 222                                 flags = FMODE_WRITE;
 223                                 break;
 224                         case LCK_PR:
 225                                 flags = FMODE_EXEC;
 226                                 if (!FMODE_EXEC)
 227                                         CERROR("open PR lock without FMODE_EXEC\n");
 228                                 break;
 229                         case LCK_CR:
 230                                 flags = FMODE_READ;
 231                                 break;
 232                         default:
 233                                 CERROR("Unexpected lock mode for OPEN lock "
 234                                        "%d, inode %ld\n", lock->l_req_mode,
 235                                        inode->i_ino);
 236                         }
 237                         ll_mdc_real_close(inode, flags);
 238                 }
 239
 240                 if (bits & MDS_INODELOCK_UPDATE)
 241                         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
 242                                   &(ll_i2info(inode)->lli_flags));
 243
 244                 if (S_ISDIR(inode->i_mode) &&
 245                      (bits & MDS_INODELOCK_UPDATE)) {
 246                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 247                                inode->i_ino);
 248                         truncate_inode_pages(inode->i_mapping, 0);
 249                         ll_drop_negative_dentry(inode);
 250                         inode->i_version++; /* XXX: remove with inode version*/
 251                 }
 252
 253                 if (inode->i_sb->s_root &&
 254                     inode != inode->i_sb->s_root->d_inode &&
 255                     (bits & MDS_INODELOCK_LOOKUP))
 256                         ll_unhash_aliases(inode);
 257                 iput(inode);
 258                 break;
 259         }
 260         default:
 261                 LBUG();
 262         }
 263
 264         RETURN(0);
 265 }
 266
 267 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
 268                          int flags, void *opaque)
 269 {
 270         struct ldlm_res_id res_id;
 271         struct obd_device *obddev = class_conn2obd(conn);
 272         ENTRY;
 273
 274         fid_build_reg_res_name(ll_inode_lu_fid(inode), &res_id);
 275         RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
 276                                       opaque));
 277 }
 278
 279 /* Pack the required supplementary groups into the supplied groups array.
 280  * If we don't need to use the groups from the target inode(s) then we
 281  * instead pack one or more groups from the user's supplementary group
 282  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 283 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 284 {
 285         int i;
 286
 287         LASSERT(i1 != NULL);
 288         LASSERT(suppgids != NULL);
 289
 290         if (in_group_p(i1->i_gid))
 291                 suppgids[0] = i1->i_gid;
 292         else
 293                 suppgids[0] = -1;
 294
 295         if (i2) {
 296                 if (in_group_p(i2->i_gid))
 297                         suppgids[1] = i2->i_gid;
 298                 else
 299                         suppgids[1] = -1;
 300         } else {
 301                 suppgids[1] = -1;
 302         }
 303
 304         for (i = 0; i < current_ngroups; i++) {
 305                 if (suppgids[0] == -1) {
 306                         if (current_groups[i] != suppgids[1])
 307                                 suppgids[0] = current_groups[i];
 308                         continue;
 309                 }
 310                 if (suppgids[1] == -1) {
 311                         if (current_groups[i] != suppgids[0])
 312                                 suppgids[1] = current_groups[i];
 313                         continue;
 314                 }
 315                 break;
 316         }
 317 }
 318
 319 int ll_prepare_mdc_op_data(struct mdc_op_data *op_data, struct inode *i1,
 320                             struct inode *i2, const char *name, int namelen,
 321                             int mode, void *data)
 322 {
 323         LASSERT(i1);
 324
 325         if (namelen > ll_i2sbi(i1)->ll_namelen)
 326                 return -ENAMETOOLONG;
 327         ll_i2gids(op_data->suppgids, i1, i2);
 328         ll_inode2fid(&op_data->fid1, i1);
 329
 330         if (i2)
 331                 ll_inode2fid(&op_data->fid2, i2);
 332         else
 333                 memset(&op_data->fid2, 0, sizeof(op_data->fid2));
 334
 335         op_data->name = name;
 336         op_data->namelen = namelen;
 337         op_data->create_mode = mode;
 338         op_data->mod_time = CURRENT_SECONDS;
 339         op_data->data = data;
 340
 341         return 0;
 342 }
 343
 344 static void ll_d_add(struct dentry *de, struct inode *inode)
 345 {
 346         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 347         /* d_instantiate */
 348         if (!list_empty(&de->d_alias)) {
 349                 spin_unlock(&dcache_lock);
 350                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 351                        de->d_name.len, de->d_name.name, de,
 352                        de->d_alias.next, de->d_alias.prev);
 353                 LBUG();
 354         }
 355         if (inode)
 356                 list_add(&de->d_alias, &inode->i_dentry);
 357         de->d_inode = inode;
 358
 359         /* d_rehash */
 360         if (!d_unhashed(de)) {
 361                 spin_unlock(&dcache_lock);
 362                 CERROR("dentry %.*s %p hash next %p\n",
 363                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 364                 LBUG();
 365         }
 366         d_rehash_cond(de, 0);
 367 }
 368
 369 /* Search "inode"'s alias list for a dentry that has the same name and parent
 370  * as de.  If found, return it.  If not found, return de.
 371  * Lustre can't use d_add_unique because don't unhash aliases for directory
 372  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 373  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 374  */
 375 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 376 {
 377         struct list_head *tmp;
 378         struct dentry *dentry;
 379         struct dentry *last_discon = NULL;
 380
 381         spin_lock(&ll_lookup_lock);
 382         spin_lock(&dcache_lock);
 383         list_for_each(tmp, &inode->i_dentry) {
 384                 dentry = list_entry(tmp, struct dentry, d_alias);
 385
 386                 /* We are called here with 'de' already on the aliases list. */
 387                 if (unlikely(dentry == de)) {
 388                         CERROR("whoops\n");
 389                         continue;
 390                 }
 391
 392                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 393                         LASSERT(last_discon == NULL);
 394                         last_discon = dentry;
 395                         continue;
 396                 }
 397
 398                 if (dentry->d_parent != de->d_parent)
 399                         continue;
 400
 401                 if (dentry->d_name.hash != de->d_name.hash)
 402                         continue;
 403
 404                 if (dentry->d_name.len != de->d_name.len)
 405                         continue;
 406
 407                 if (memcmp(dentry->d_name.name, de->d_name.name,
 408                            de->d_name.len) != 0)
 409                         continue;
 410
 411                 dget_locked(dentry);
 412                 lock_dentry(dentry);
 413                 __d_drop(dentry);
 414 #ifdef DCACHE_LUSTRE_INVALID
 415                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 416 #endif
 417                 unlock_dentry(dentry);
 418                 ll_dops_init(dentry, 0);
 419                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 420                 spin_unlock(&dcache_lock);
 421                 spin_unlock(&ll_lookup_lock);
 422                 iput(inode);
 423                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 424                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 425                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 426                 return dentry;
 427         }
 428
 429         if (last_discon) {
 430                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 431                         "refc %d\n", last_discon, last_discon->d_inode,
 432                         atomic_read(&last_discon->d_count));
 433                 dget_locked(last_discon);
 434                 spin_unlock(&dcache_lock);
 435                 spin_unlock(&ll_lookup_lock);
 436                 ll_dops_init(last_discon, 1);
 437                 d_rehash(de);
 438                 d_move(last_discon, de);
 439                 iput(inode);
 440                 return last_discon;
 441         }
 442
 443         ll_d_add(de, inode);
 444
 445         spin_unlock(&dcache_lock);
 446         spin_unlock(&ll_lookup_lock);
 447
 448         return de;
 449 }
 450
 451 int lookup_it_finish(struct ptlrpc_request *request, int offset,
 452                      struct lookup_intent *it, void *data)
 453 {
 454         struct it_cb_data *icbd = data;
 455         struct dentry **de = icbd->icbd_childp;
 456         struct inode *parent = icbd->icbd_parent;
 457         struct ll_sb_info *sbi = ll_i2sbi(parent);
 458         struct inode *inode = NULL;
 459         int rc;
 460         ENTRY;
 461
 462         /* NB 1 request reference will be taken away by ll_intent_lock()
 463          * when I return */
 464         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 465                 struct dentry *save = *de;
 466
 467                 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
 468                                    (*de)->d_sb);
 469                 if (rc)
 470                         RETURN(rc);
 471
 472                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 473                        inode, inode->i_ino, inode->i_generation);
 474                 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 475
 476                 /* We used to query real size from OSTs here, but actually
 477                    this is not needed. For stat() calls size would be updated
 478                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 479                    2.4 and
 480                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 481                    Everybody else who needs correct file size would call
 482                    ll_glimpse_size or some equivalent themselves anyway.
 483                    Also see bug 7198. */
 484
 485                 ll_dops_init(*de, 1);
 486                 *de = ll_find_alias(inode, *de);
 487                 if (*de != save) {
 488                         struct ll_dentry_data *lld = ll_d2d(*de);
 489
 490                         /* just make sure the ll_dentry_data is ready */
 491                         if (unlikely(lld == NULL)) {
 492                                 ll_set_dd(*de);
 493                                 lld = ll_d2d(*de);
 494                                 if (likely(lld != NULL))
 495                                         lld->lld_sa_generation = 0;
 496                         }
 497                 }
 498         } else {
 499                 ll_dops_init(*de, 1);
 500                 /* Check that parent has UPDATE lock. If there is none, we
 501                    cannot afford to hash this dentry (done by ll_d_add) as it
 502                    might get picked up later when UPDATE lock will appear */
 503                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 504                         spin_lock(&dcache_lock);
 505                         ll_d_add(*de, inode);
 506                         spin_unlock(&dcache_lock);
 507                 } else {
 508                         (*de)->d_inode = NULL;
 509                         /* We do not want to hash the dentry if don`t have a
 510                          * lock, but if this dentry is later used in d_move,
 511                          * we'd hit uninitialised list head d_hash, so we just
 512                          * do this to init d_hash field but leave dentry
 513                          * unhashed. (bug 10796). */
 514                         d_rehash(*de);
 515                         d_drop(*de);
 516                 }
 517         }
 518
 519         RETURN(0);
 520 }
 521
 522 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 523                                    struct lookup_intent *it, int lookup_flags)
 524 {
 525         struct dentry *save = dentry, *retval;
 526         struct mdc_op_data op_data = { { 0 } };
 527         struct it_cb_data icbd;
 528         struct ptlrpc_request *req = NULL;
 529         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 530         int rc, first = 0;
 531         ENTRY;
 532
 533         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 534                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 535                parent->i_generation, parent, LL_IT2STR(it));
 536
 537         if (d_mountpoint(dentry))
 538                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 539
 540         ll_frob_intent(&it, &lookup_it);
 541
 542         /* As do_lookup is called before follow_mount, root dentry may be left
 543          * not valid, revalidate it here. */
 544         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 545             (it->it_op & (IT_OPEN | IT_CREAT))) {
 546                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 547                 if (rc)
 548                         RETURN(ERR_PTR(rc));
 549         }
 550
 551         if (it->it_op == IT_GETATTR) {
 552                 first = ll_statahead_enter(parent, &dentry, 1);
 553                 if (first >= 0) {
 554                         ll_statahead_exit(dentry, first);
 555                         if (first == 1)
 556                                 RETURN(retval = dentry);
 557                 }
 558         }
 559
 560         icbd.icbd_parent = parent;
 561         icbd.icbd_childp = &dentry;
 562
 563         rc = ll_prepare_mdc_op_data(&op_data, parent, NULL, dentry->d_name.name,
 564                                     dentry->d_name.len, lookup_flags, NULL);
 565         if (rc)
 566                 RETURN(ERR_PTR(rc));
 567
 568         it->it_create_mode &= ~current->fs->umask;
 569
 570         rc = mdc_intent_lock(ll_i2mdcexp(parent), &op_data, NULL, 0, it,
 571                              lookup_flags, &req, ll_mdc_blocking_ast, 0);
 572
 573         if (rc < 0)
 574                 GOTO(out, retval = ERR_PTR(rc));
 575
 576         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 577         if (rc != 0) {
 578                 ll_intent_release(it);
 579                 GOTO(out, retval = ERR_PTR(rc));
 580         }
 581
 582         if (first == -EEXIST)
 583                 ll_statahead_mark(dentry);
 584
 585         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 586             !S_ISREG(dentry->d_inode->i_mode) &&
 587             !S_ISDIR(dentry->d_inode->i_mode)) {
 588                 ll_release_openhandle(dentry, it);
 589         }
 590         ll_lookup_finish_locks(it, dentry);
 591
 592         if (dentry == save)
 593                 GOTO(out, retval = NULL);
 594         else
 595                 GOTO(out, retval = dentry);
 596  out:
 597         if (req)
 598                 ptlrpc_req_finished(req);
 599         return retval;
 600 }
 601
 602 #ifdef HAVE_VFS_INTENT_PATCHES
 603 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 604                                    struct nameidata *nd)
 605 {
 606         struct dentry *de;
 607         ENTRY;
 608
 609         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 610                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 611         else
 612                 de = ll_lookup_it(parent, dentry, NULL, 0);
 613
 614         RETURN(de);
 615 }
 616 #else
 617 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 618                                         int lookup_flags)
 619 {
 620         struct lookup_intent *it;
 621
 622         OBD_ALLOC(it, sizeof(*it));
 623         if (!it)
 624                 return ERR_PTR(-ENOMEM);
 625
 626         if (lookup_flags & LOOKUP_OPEN) {
 627                 it->it_op = IT_OPEN;
 628                 if (lookup_flags & LOOKUP_CREATE)
 629                         it->it_op |= IT_CREAT;
 630                 it->it_create_mode = oit->create_mode;
 631                 it->it_flags = oit->flags;
 632         } else {
 633                 it->it_op = IT_GETATTR;
 634         }
 635
 636 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 637                 /* Since there is no way to pass our intent to ll_file_open,
 638                  * just check the file is there. Actual open will be done
 639                  * in ll_file_open */
 640                 if (it->it_op & IT_OPEN)
 641                         it->it_op = IT_LOOKUP;
 642 #endif
 643
 644         return it;
 645 }
 646
 647 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 648                                    struct nameidata *nd)
 649 {
 650         struct dentry *de;
 651         ENTRY;
 652
 653         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 654                 struct lookup_intent *it;
 655
 656 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 657                 /* Did we came here from failed revalidate just to propagate
 658                  * its error? */
 659                 if (nd->flags & LOOKUP_OPEN)
 660                         if (IS_ERR(nd->intent.open.file))
 661                                 RETURN((struct dentry *)nd->intent.open.file);
 662 #endif
 663
 664                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 665                         it = ll_d2d(dentry)->lld_it;
 666                         ll_d2d(dentry)->lld_it = NULL;
 667                 } else {
 668                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 669                         if (IS_ERR(it))
 670                                 RETURN((struct dentry *)it);
 671                 }
 672
 673                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 674                 if (de)
 675                         dentry = de;
 676                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 677                         if (dentry->d_inode &&
 678                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 679 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 680                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 681                                         // We cannot call open here as it would
 682                                         // deadlock.
 683                                         ptlrpc_req_finished(
 684                                                        (struct ptlrpc_request *)
 685                                                           it->d.lustre.it_data);
 686                                 } else {
 687                                         struct file *filp;
 688                                         nd->intent.open.file->private_data = it;
 689                                         filp =lookup_instantiate_filp(nd,dentry,
 690                                                                       NULL);
 691 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 692 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 693  * nd->intent.open.file for error, so we need to return it as lookup's result
 694  * instead */
 695                                         if (IS_ERR(filp)) {
 696                                                 if (de)
 697                                                         dput(de);
 698                                                 de = (struct dentry *) filp;
 699                                         }
 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(sbi->ll_osc_exp, &inode, request, DLM_REPLY_REC_OFF,
 749                            dir->i_sb);
 750         if (rc)
 751                 GOTO(out, inode = ERR_PTR(rc));
 752
 753         LASSERT(list_empty(&inode->i_dentry));
 754
 755         /* We asked for a lock on the directory, but were granted a
 756          * lock on the inode.  Since we finally have an inode pointer,
 757          * stuff it in the lock. */
 758         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 759                inode, inode->i_ino, inode->i_generation);
 760         mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
 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         struct ptlrpc_request *request = it->d.lustre.it_data;
 786         int rc = 0;
 787         ENTRY;
 788
 789         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 790                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 791                dir->i_generation, dir, LL_IT2STR(it));
 792
 793         rc = it_open_error(DISP_OPEN_CREATE, it);
 794         if (rc)
 795                 RETURN(rc);
 796
 797         mdc_store_inode_generation(request, DLM_INTENT_REC_OFF,
 798                                    DLM_REPLY_REC_OFF);
 799         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 800                                NULL, 0, mode, 0, it);
 801         if (IS_ERR(inode)) {
 802                 RETURN(PTR_ERR(inode));
 803         }
 804
 805         d_instantiate(dentry, inode);
 806         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 807          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 808          * successful create. Hash it here. */
 809         spin_lock(&dcache_lock);
 810         if (d_unhashed(dentry))
 811                 d_rehash_cond(dentry, 0);
 812         spin_unlock(&dcache_lock);
 813         RETURN(0);
 814 }
 815
 816 static void ll_update_times(struct ptlrpc_request *request, int offset,
 817                             struct inode *inode)
 818 {
 819         struct mds_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 820                                                sizeof(*body));
 821         LASSERT(body);
 822
 823         if (body->valid & OBD_MD_FLMTIME &&
 824             body->mtime > LTIME_S(inode->i_mtime)) {
 825                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 826                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 827                 LTIME_S(inode->i_mtime) = body->mtime;
 828         }
 829         if (body->valid & OBD_MD_FLCTIME &&
 830             body->ctime > LTIME_S(inode->i_ctime))
 831                 LTIME_S(inode->i_ctime) = body->ctime;
 832 }
 833
 834 static int ll_new_node(struct inode *dir, struct qstr *name,
 835                        const char *tgt, int mode,
 836                        int rdev, struct dentry *dchild)
 837 {
 838         struct ptlrpc_request *request = NULL;
 839         struct inode *inode = NULL;
 840         struct ll_sb_info *sbi = ll_i2sbi(dir);
 841         struct mdc_op_data op_data = { { 0 } };
 842         int tgt_len = 0;
 843         int err;
 844
 845         ENTRY;
 846         if (unlikely(tgt != NULL))
 847                 tgt_len = strlen(tgt)+1;
 848
 849         err = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
 850                                      name->len, 0, NULL);
 851         if (err)
 852                 GOTO(err_exit, err);
 853
 854         err = mdc_create(sbi->ll_mdc_exp, &op_data, tgt, tgt_len,
 855                          mode, current->fsuid, current->fsgid,
 856                          cfs_curproc_cap_pack(), rdev, &request);
 857         if (err)
 858                 GOTO(err_exit, err);
 859
 860         ll_update_times(request, REPLY_REC_OFF, dir);
 861
 862         if (dchild) {
 863                 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request,
 864                                     REPLY_REC_OFF, dchild->d_sb);
 865                 if (err)
 866                      GOTO(err_exit, err);
 867
 868                 d_drop(dchild);
 869                 d_instantiate(dchild, inode);
 870                 EXIT;
 871         }
 872 err_exit:
 873         ptlrpc_req_finished(request);
 874
 875         return err;
 876 }
 877
 878
 879 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 880                             unsigned rdev, struct dentry *dchild)
 881 {
 882         int err;
 883         ENTRY;
 884
 885         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 886                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 887                mode, rdev);
 888
 889         mode &= ~current->fs->umask;
 890
 891         switch (mode & S_IFMT) {
 892         case 0:
 893                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 894         case S_IFREG:
 895         case S_IFCHR:
 896         case S_IFBLK:
 897         case S_IFIFO:
 898         case S_IFSOCK:
 899                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild);
 900                 break;
 901         case S_IFDIR:
 902                 err = -EPERM;
 903                 break;
 904         default:
 905                 err = -EINVAL;
 906         }
 907         RETURN(err);
 908 }
 909
 910 #ifndef HAVE_VFS_INTENT_PATCHES
 911 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 912 {
 913         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 914         int rc;
 915
 916         if (!it)
 917                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 918
 919         ll_d2d(dentry)->lld_it = NULL;
 920
 921         /* Was there an error? Propagate it! */
 922         if (it->d.lustre.it_status) {
 923                 rc = it->d.lustre.it_status;
 924                 goto out;
 925         }
 926
 927         rc = ll_create_it(dir, dentry, mode, it);
 928 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 929         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 930                 nd->intent.open.file->private_data = it;
 931                 lookup_instantiate_filp(nd, dentry, NULL);
 932         }
 933 #else
 934         ll_release_openhandle(dentry,it);
 935 #endif
 936
 937 out:
 938         ll_intent_release(it);
 939         OBD_FREE(it, sizeof(*it));
 940
 941         return rc;
 942 }
 943 #else
 944 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 945 {
 946
 947         if (!nd || !nd->intent.d.lustre.it_disposition)
 948                 /* No saved request? Just mknod the file */
 949                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 950
 951         return ll_create_it(dir, dentry, mode, &nd->intent);
 952 }
 953 #endif
 954
 955 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 956                               const char *tgt, struct dentry *dchild)
 957 {
 958         int err;
 959         ENTRY;
 960
 961         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 962                name->len, name->name, dir->i_ino, dir->i_generation,
 963                dir, 3000, tgt);
 964
 965         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 966                           0, dchild);
 967         RETURN(err);
 968 }
 969
 970 static int ll_link_generic(struct inode *src,  struct inode *dir,
 971                            struct qstr *name, struct dentry *dchild)
 972 {
 973         struct ptlrpc_request *request = NULL;
 974         struct mdc_op_data op_data = { { 0 } };
 975         int err;
 976         struct ll_sb_info *sbi = ll_i2sbi(dir);
 977
 978         ENTRY;
 979         CDEBUG(D_VFSTRACE,
 980                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 981                src->i_ino, src->i_generation, src, dir->i_ino,
 982                dir->i_generation, dir, name->len, name->name);
 983
 984         err = ll_prepare_mdc_op_data(&op_data, src, dir, name->name,
 985                                      name->len, 0, NULL);
 986         if (err)
 987                 GOTO(out, err);
 988         err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
 989         if (err)
 990                GOTO(out, err);
 991
 992         if (dchild) {
 993                 d_drop(dchild);
 994         }
 995         ll_update_times(request, REPLY_REC_OFF, dir);
 996
 997         EXIT;
 998 out:
 999         ptlrpc_req_finished(request);
1000         RETURN(err);
1001 }
1002
1003 static int ll_mkdir_generic(struct inode *dir, struct qstr *name, int mode,
1004                             struct dentry *dchild)
1005
1006 {
1007         int err;
1008
1009         ENTRY;
1010         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1011                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1012
1013         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1014         err = ll_new_node(dir, name, NULL, mode, 0, dchild);
1015
1016         RETURN(err);
1017 }
1018
1019 /* Try to find the child dentry by its name.
1020    If found, put the result fid into @fid. */
1021 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1022                              struct ll_fid *fid)
1023 {
1024         struct dentry *parent, *child;
1025
1026         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1027         child = d_lookup(parent, name);
1028         if (child) {
1029                 if (child->d_inode)
1030                         ll_inode2fid(fid, child->d_inode);
1031                 dput(child);
1032         }
1033 }
1034
1035 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1036                             struct qstr *name)
1037 {
1038         struct ptlrpc_request *request = NULL;
1039         struct mdc_op_data op_data = { { 0 } };
1040         struct dentry *dentry;
1041         int rc;
1042         ENTRY;
1043         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1044                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1045
1046         /* Check if we have something mounted at the dir we are going to delete
1047          * In such a case there would always be dentry present. */
1048         if (dparent) {
1049                 dentry = d_lookup(dparent, name);
1050                 if (dentry) {
1051                         int mounted = d_mountpoint(dentry);
1052                         dput(dentry);
1053                         if (mounted)
1054                                 GOTO(out, rc = -EBUSY);
1055                 }
1056         }
1057
1058         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1059                                     name->len, S_IFDIR, NULL);
1060         if (rc)
1061                 GOTO(out, rc);
1062
1063         ll_get_child_fid(dir, name, &op_data.fid3);
1064         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1065         if (rc)
1066                 GOTO(out, rc);
1067         ll_update_times(request, REPLY_REC_OFF, dir);
1068
1069         EXIT;
1070 out:
1071         ptlrpc_req_finished(request);
1072         return(rc);
1073 }
1074
1075 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1076 {
1077         struct mds_body *body;
1078         struct lov_mds_md *eadata;
1079         struct lov_stripe_md *lsm = NULL;
1080         struct obd_trans_info oti = { 0 };
1081         struct obdo *oa;
1082         int rc;
1083         ENTRY;
1084
1085         /* req is swabbed so this is safe */
1086         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1087
1088         if (!(body->valid & OBD_MD_FLEASIZE))
1089                 RETURN(0);
1090
1091         if (body->eadatasize == 0) {
1092                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1093                 GOTO(out, rc = -EPROTO);
1094         }
1095
1096         /* The MDS sent back the EA because we unlinked the last reference
1097          * to this file. Use this EA to unlink the objects on the OST.
1098          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1099          * check it is complete and sensible. */
1100         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1101                                     body->eadatasize, NULL);
1102         LASSERT(eadata != NULL);
1103         if (eadata == NULL) {
1104                 CERROR("Can't unpack MDS EA data\n");
1105                 GOTO(out, rc = -EPROTO);
1106         }
1107
1108         rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
1109         if (rc < 0) {
1110                 CERROR("obd_unpackmd: %d\n", rc);
1111                 GOTO(out, rc);
1112         }
1113         LASSERT(rc >= sizeof(*lsm));
1114
1115         rc = obd_checkmd(ll_i2obdexp(dir), ll_i2mdcexp(dir), lsm);
1116         if (rc)
1117                 GOTO(out_free_memmd, rc);
1118
1119         OBDO_ALLOC(oa);
1120         if (oa == NULL)
1121                 GOTO(out_free_memmd, rc = -ENOMEM);
1122
1123         oa->o_id = lsm->lsm_object_id;
1124         oa->o_gr = lsm->lsm_object_gr;
1125         oa->o_mode = body->mode & S_IFMT;
1126         oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLTYPE;
1127
1128         if (body->valid & OBD_MD_FLCOOKIE) {
1129                 oa->o_valid |= OBD_MD_FLCOOKIE;
1130                 oti.oti_logcookies =
1131                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1132                                        sizeof(struct llog_cookie) *
1133                                        lsm->lsm_stripe_count);
1134                 if (oti.oti_logcookies == NULL) {
1135                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1136                         body->valid &= ~OBD_MD_FLCOOKIE;
1137                 }
1138         }
1139
1140         rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti, ll_i2mdcexp(dir));
1141         OBDO_FREE(oa);
1142         if (rc)
1143                 CERROR("obd destroy objid "LPX64"@"LPX64" error %d\n",
1144                        lsm->lsm_object_id, lsm->lsm_object_gr, rc);
1145  out_free_memmd:
1146         obd_free_memmd(ll_i2obdexp(dir), &lsm);
1147  out:
1148         return rc;
1149 }
1150
1151 static int ll_unlink_generic(struct inode * dir, struct qstr *name)
1152 {
1153         struct ptlrpc_request *request = NULL;
1154         struct mdc_op_data op_data = { { 0 } };
1155         int rc;
1156         ENTRY;
1157
1158         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1159                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1160
1161         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1162                                     name->len, 0, NULL);
1163         if (rc)
1164                 GOTO(out, rc);
1165
1166         ll_get_child_fid(dir, name, &op_data.fid3);
1167         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1168         if (rc)
1169                 GOTO(out, rc);
1170
1171         ll_update_times(request, REPLY_REC_OFF, dir);
1172
1173         rc = ll_objects_destroy(request, dir);
1174         if (rc)
1175                 GOTO(out, rc);
1176         EXIT;
1177  out:
1178         ptlrpc_req_finished(request);
1179         return(rc);
1180 }
1181
1182 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1183                              struct inode *tgt, struct qstr *tgt_name)
1184 {
1185         struct ptlrpc_request *request = NULL;
1186         struct ll_sb_info *sbi = ll_i2sbi(src);
1187         struct mdc_op_data op_data = { { 0 } };
1188         int err;
1189
1190         ENTRY;
1191         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1192                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1193                src->i_ino, src->i_generation, src, tgt_name->len,
1194                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1195
1196         err = ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0, NULL);
1197         if (err)
1198                 GOTO(out, err);
1199
1200         ll_get_child_fid(src, src_name, &op_data.fid3);
1201         ll_get_child_fid(tgt, tgt_name, &op_data.fid4);
1202         err = mdc_rename(sbi->ll_mdc_exp, &op_data,
1203                          src_name->name, src_name->len,
1204                          tgt_name->name, tgt_name->len, &request);
1205         if (err)
1206                 GOTO(out, err);
1207         ll_update_times(request, REPLY_REC_OFF, src);
1208         ll_update_times(request, REPLY_REC_OFF, tgt);
1209         err = ll_objects_destroy(request, src);
1210         if (err)
1211                 GOTO(out, err);
1212
1213         EXIT;
1214 out:
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->last,
1228                                  tgtnd->dentry->d_inode, &tgtnd->last);
1229 }
1230 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1231 {
1232         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1233                                &tgtnd->last, NULL);
1234 }
1235 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1236 {
1237         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1238 }
1239 static int ll_rmdir_raw(struct nameidata *nd)
1240 {
1241         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1242 }
1243 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1244 {
1245         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1246 }
1247 static int ll_unlink_raw(struct nameidata *nd)
1248 {
1249         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1250 }
1251 #endif
1252
1253 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1254                     ll_dev_t rdev)
1255 {
1256         return ll_mknod_generic(dir, &dchild->d_name, mode,
1257                                 old_encode_dev(rdev), dchild);
1258 }
1259
1260 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1261 {
1262         return ll_unlink_generic(dir, &dentry->d_name);
1263 }
1264 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1265 {
1266         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1267 }
1268 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1269 {
1270         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1271 }
1272 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1273                       const char *oldname)
1274 {
1275         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1276 }
1277 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1278                    struct dentry *new_dentry)
1279 {
1280         return ll_link_generic(old_dentry->d_inode, dir,
1281                                &new_dentry->d_name, new_dentry);
1282 }
1283 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1284                      struct inode *new_dir, struct dentry *new_dentry)
1285 {
1286         int err;
1287         err = ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1288                                 &new_dentry->d_name);
1289         if (!err) {
1290 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1291                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1292 #endif
1293                         d_move(old_dentry, new_dentry);
1294         }
1295         return err;
1296 }
1297
1298 struct inode_operations ll_dir_inode_operations = {
1299 #ifdef HAVE_VFS_INTENT_PATCHES
1300         .link_raw           = ll_link_raw,
1301         .unlink_raw         = ll_unlink_raw,
1302         .symlink_raw        = ll_symlink_raw,
1303         .mkdir_raw          = ll_mkdir_raw,
1304         .rmdir_raw          = ll_rmdir_raw,
1305         .mknod_raw          = ll_mknod_raw,
1306         .rename_raw         = ll_rename_raw,
1307         .setattr            = ll_setattr,
1308         .setattr_raw        = ll_setattr_raw,
1309 #endif
1310         .mknod              = ll_mknod,
1311         .lookup             = ll_lookup_nd,
1312         .create             = ll_create_nd,
1313         /* We need all these non-raw things for NFSD, to not patch it. */
1314         .unlink             = ll_unlink,
1315         .mkdir              = ll_mkdir,
1316         .rmdir              = ll_rmdir,
1317         .symlink            = ll_symlink,
1318         .link               = ll_link,
1319         .rename             = ll_rename,
1320         .setattr            = ll_setattr,
1321         .getattr            = ll_getattr,
1322         .permission         = ll_inode_permission,
1323         .setxattr           = ll_setxattr,
1324         .getxattr           = ll_getxattr,
1325         .listxattr          = ll_listxattr,
1326         .removexattr        = ll_removexattr,
1327 };
1328
1329 struct inode_operations ll_special_inode_operations = {
1330 #ifdef HAVE_VFS_INTENT_PATCHES
1331         .setattr_raw    = ll_setattr_raw,
1332 #endif
1333         .setattr        = ll_setattr,
1334         .getattr        = ll_getattr,
1335         .permission     = ll_inode_permission,
1336         .setxattr       = ll_setxattr,
1337         .getxattr       = ll_getxattr,
1338         .listxattr      = ll_listxattr,
1339         .removexattr    = ll_removexattr,
1340 };