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 (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011 Whamcloud, Inc.
  33  *
  34  */
  35 /*
  36  * This file is part of Lustre, http://www.lustre.org/
  37  * Lustre is a trademark of Sun Microsystems, Inc.
  38  */
  39
  40 #include <linux/fs.h>
  41 #include <linux/sched.h>
  42 #include <linux/mm.h>
  43 #include <linux/smp_lock.h>
  44 #include <linux/quotaops.h>
  45 #include <linux/highmem.h>
  46 #include <linux/pagemap.h>
  47 #include <linux/security.h>
  48
  49 #define DEBUG_SUBSYSTEM S_LLITE
  50
  51 #include <obd_support.h>
  52 #include <lustre_fid.h>
  53 #include <lustre_lite.h>
  54 #include <lustre_dlm.h>
  55 #include <lustre_ver.h>
  56 #include "llite_internal.h"
  57
  58 /*
  59  * Check if we have something mounted at the named dchild.
  60  * In such a case there would always be dentry present.
  61  */
  62 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  63                            struct qstr *name)
  64 {
  65         int mounted = 0;
  66
  67         if (unlikely(dchild)) {
  68                 mounted = d_mountpoint(dchild);
  69         } else if (dparent) {
  70                 dchild = d_lookup(dparent, name);
  71                 if (dchild) {
  72                         mounted = d_mountpoint(dchild);
  73                         dput(dchild);
  74                 }
  75         }
  76         return mounted;
  77 }
  78
  79 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  80 {
  81         ENTRY;
  82
  83         ldlm_lock_decref(lockh, mode);
  84
  85         RETURN(0);
  86 }
  87
  88
  89 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  90 static int ll_test_inode(struct inode *inode, void *opaque)
  91 {
  92         struct ll_inode_info *lli = ll_i2info(inode);
  93         struct lustre_md     *md = opaque;
  94
  95         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  96                 CERROR("MDS body missing FID\n");
  97                 return 0;
  98         }
  99
 100         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
 101                 return 0;
 102
 103         return 1;
 104 }
 105
 106 static int ll_set_inode(struct inode *inode, void *opaque)
 107 {
 108         struct ll_inode_info *lli = ll_i2info(inode);
 109         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
 110
 111         if (unlikely(!(body->valid & OBD_MD_FLID))) {
 112                 CERROR("MDS body missing FID\n");
 113                 return -EINVAL;
 114         }
 115
 116         lli->lli_fid = body->fid1;
 117         return 0;
 118 }
 119
 120
 121 /*
 122  * Get an inode by inode number (already instantiated by the intent lookup).
 123  * Returns inode or NULL
 124  */
 125 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 126                       struct lustre_md *md)
 127 {
 128         struct inode         *inode;
 129         ENTRY;
 130
 131         LASSERT(hash != 0);
 132         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 133
 134         if (inode) {
 135                 if (inode->i_state & I_NEW) {
 136                         int rc = 0;
 137
 138                         ll_read_inode2(inode, md);
 139                         if (S_ISREG(inode->i_mode) &&
 140                             ll_i2info(inode)->lli_clob == NULL)
 141                                 rc = cl_inode_init(inode, md);
 142                         if (rc != 0) {
 143                                 md->lsm = NULL;
 144                                 make_bad_inode(inode);
 145                                 unlock_new_inode(inode);
 146                                 iput(inode);
 147                                 inode = ERR_PTR(rc);
 148                         } else
 149                                 unlock_new_inode(inode);
 150                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 151                                 ll_update_inode(inode, md);
 152                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 153                        inode, PFID(&md->body->fid1));
 154         }
 155         RETURN(inode);
 156 }
 157
 158 static void ll_drop_negative_dentry(struct inode *dir)
 159 {
 160         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 161
 162         cfs_spin_lock(&ll_lookup_lock);
 163         spin_lock(&dcache_lock);
 164 restart:
 165         list_for_each_entry_safe(dentry, tmp_alias,
 166                                  &dir->i_dentry,d_alias) {
 167                 if (!list_empty(&dentry->d_subdirs)) {
 168                         struct dentry *child;
 169                         list_for_each_entry_safe(child, tmp_subdir,
 170                                                  &dentry->d_subdirs,
 171                                                  d_child) {
 172                                 /* XXX Print some debug here? */
 173                                 if (!child->d_inode)
 174                                 /* Negative dentry. If we were
 175                                    dropping dcache lock, go
 176                                    throught the list again */
 177                                         if (ll_drop_dentry(child))
 178                                                 goto restart;
 179                         }
 180                 }
 181         }
 182         spin_unlock(&dcache_lock);
 183         cfs_spin_unlock(&ll_lookup_lock);
 184 }
 185
 186
 187 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 188                        void *data, int flag)
 189 {
 190         int rc;
 191         struct lustre_handle lockh;
 192         ENTRY;
 193
 194         switch (flag) {
 195         case LDLM_CB_BLOCKING:
 196                 ldlm_lock2handle(lock, &lockh);
 197                 rc = ldlm_cli_cancel(&lockh);
 198                 if (rc < 0) {
 199                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 200                         RETURN(rc);
 201                 }
 202                 break;
 203         case LDLM_CB_CANCELING: {
 204                 struct inode *inode = ll_inode_from_lock(lock);
 205                 struct ll_inode_info *lli;
 206                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 207                 struct lu_fid *fid;
 208                 ldlm_mode_t mode = lock->l_req_mode;
 209
 210                 /* Invalidate all dentries associated with this inode */
 211                 if (inode == NULL)
 212                         break;
 213
 214                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 215                 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
 216                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE))
 217                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
 218
 219                 if (bits & MDS_INODELOCK_OPEN)
 220                         ll_have_md_lock(inode, &bits, mode);
 221
 222                 fid = ll_inode2fid(inode);
 223                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 224                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 225                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 226                         LDLM_ERROR(lock, "data mismatch with object "
 227                                    DFID" (%p)", PFID(fid), inode);
 228                 }
 229
 230                 if (bits & MDS_INODELOCK_OPEN) {
 231                         int flags = 0;
 232                         switch (lock->l_req_mode) {
 233                         case LCK_CW:
 234                                 flags = FMODE_WRITE;
 235                                 break;
 236                         case LCK_PR:
 237                                 flags = FMODE_EXEC;
 238                                 break;
 239                         case LCK_CR:
 240                                 flags = FMODE_READ;
 241                                 break;
 242                         default:
 243                                 CERROR("Unexpected lock mode for OPEN lock "
 244                                        "%d, inode %ld\n", lock->l_req_mode,
 245                                        inode->i_ino);
 246                         }
 247                         ll_md_real_close(inode, flags);
 248                 }
 249
 250                 lli = ll_i2info(inode);
 251                 if (bits & MDS_INODELOCK_UPDATE)
 252                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 253
 254                 if (S_ISDIR(inode->i_mode) &&
 255                      (bits & MDS_INODELOCK_UPDATE)) {
 256                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 257                                inode->i_ino);
 258                         truncate_inode_pages(inode->i_mapping, 0);
 259                         ll_drop_negative_dentry(inode);
 260                 }
 261
 262                 if (inode->i_sb->s_root &&
 263                     inode != inode->i_sb->s_root->d_inode &&
 264                     (bits & MDS_INODELOCK_LOOKUP))
 265                         ll_unhash_aliases(inode);
 266                 iput(inode);
 267                 break;
 268         }
 269         default:
 270                 LBUG();
 271         }
 272
 273         RETURN(0);
 274 }
 275
 276 __u32 ll_i2suppgid(struct inode *i)
 277 {
 278         if (cfs_curproc_is_in_groups(i->i_gid))
 279                 return (__u32)i->i_gid;
 280         else
 281                 return (__u32)(-1);
 282 }
 283
 284 /* Pack the required supplementary groups into the supplied groups array.
 285  * If we don't need to use the groups from the target inode(s) then we
 286  * instead pack one or more groups from the user's supplementary group
 287  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 288 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 289 {
 290 #if 0
 291         int i;
 292 #endif
 293
 294         LASSERT(i1 != NULL);
 295         LASSERT(suppgids != NULL);
 296
 297         suppgids[0] = ll_i2suppgid(i1);
 298
 299         if (i2)
 300                 suppgids[1] = ll_i2suppgid(i2);
 301                 else
 302                         suppgids[1] = -1;
 303
 304 #if 0
 305         for (i = 0; i < current_ngroups; i++) {
 306                 if (suppgids[0] == -1) {
 307                         if (current_groups[i] != suppgids[1])
 308                                 suppgids[0] = current_groups[i];
 309                         continue;
 310                 }
 311                 if (suppgids[1] == -1) {
 312                         if (current_groups[i] != suppgids[0])
 313                                 suppgids[1] = current_groups[i];
 314                         continue;
 315                 }
 316                 break;
 317         }
 318 #endif
 319 }
 320
 321 static void ll_d_add(struct dentry *de, struct inode *inode)
 322 {
 323         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 324         /* d_instantiate */
 325         if (!list_empty(&de->d_alias)) {
 326                 spin_unlock(&dcache_lock);
 327                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 328                        de->d_name.len, de->d_name.name, de,
 329                        de->d_alias.next, de->d_alias.prev);
 330                 LBUG();
 331         }
 332         if (inode)
 333                 list_add(&de->d_alias, &inode->i_dentry);
 334         de->d_inode = inode;
 335         /* d_instantiate() replacement code should initialize security
 336          * context. */
 337         security_d_instantiate(de, inode);
 338
 339         /* d_rehash */
 340         if (!d_unhashed(de)) {
 341                 spin_unlock(&dcache_lock);
 342                 CERROR("dentry %.*s %p hash next %p\n",
 343                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 344                 LBUG();
 345         }
 346         d_rehash_cond(de, 0);
 347 }
 348
 349 /* Search "inode"'s alias list for a dentry that has the same name and parent
 350  * as de.  If found, return it.  If not found, return de.
 351  * Lustre can't use d_add_unique because don't unhash aliases for directory
 352  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 353  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 354  */
 355 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 356 {
 357         struct list_head *tmp;
 358         struct dentry *dentry;
 359         struct dentry *last_discon = NULL;
 360
 361         cfs_spin_lock(&ll_lookup_lock);
 362         spin_lock(&dcache_lock);
 363         list_for_each(tmp, &inode->i_dentry) {
 364                 dentry = list_entry(tmp, struct dentry, d_alias);
 365
 366                 /* We are called here with 'de' already on the aliases list. */
 367                 if (unlikely(dentry == de)) {
 368                         CERROR("whoops\n");
 369                         continue;
 370                 }
 371
 372                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 373                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
 374                         last_discon = dentry;
 375                         continue;
 376                 }
 377
 378                 if (dentry->d_parent != de->d_parent)
 379                         continue;
 380
 381                 if (dentry->d_name.hash != de->d_name.hash)
 382                         continue;
 383
 384                 if (dentry->d_name.len != de->d_name.len)
 385                         continue;
 386
 387                 if (memcmp(dentry->d_name.name, de->d_name.name,
 388                            de->d_name.len) != 0)
 389                         continue;
 390
 391                 dget_locked(dentry);
 392                 ll_dops_init(dentry, 0, 1);
 393                 ll_dentry_rehash(dentry, 1);
 394                 spin_unlock(&dcache_lock);
 395                 cfs_spin_unlock(&ll_lookup_lock);
 396                 iput(inode);
 397                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 398                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 399                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 400                 return dentry;
 401         }
 402
 403         if (last_discon) {
 404                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 405                         "refc %d\n", last_discon, last_discon->d_inode,
 406                         atomic_read(&last_discon->d_count));
 407                 dget_locked(last_discon);
 408                 lock_dentry(last_discon);
 409                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 410                 unlock_dentry(last_discon);
 411                 spin_unlock(&dcache_lock);
 412                 cfs_spin_unlock(&ll_lookup_lock);
 413                 ll_dops_init(last_discon, 1, 1);
 414                 d_rehash(de);
 415                 d_move(last_discon, de);
 416                 iput(inode);
 417                 return last_discon;
 418         }
 419         lock_dentry(de);
 420         de->d_flags |= DCACHE_LUSTRE_INVALID;
 421         unlock_dentry(de);
 422         ll_d_add(de, inode);
 423
 424         spin_unlock(&dcache_lock);
 425         cfs_spin_unlock(&ll_lookup_lock);
 426
 427         return de;
 428 }
 429
 430 int ll_lookup_it_finish(struct ptlrpc_request *request,
 431                         struct lookup_intent *it, void *data)
 432 {
 433         struct it_cb_data *icbd = data;
 434         struct dentry **de = icbd->icbd_childp;
 435         struct inode *parent = icbd->icbd_parent;
 436         struct inode *inode = NULL;
 437         int rc;
 438         ENTRY;
 439
 440         /* NB 1 request reference will be taken away by ll_intent_lock()
 441          * when I return */
 442         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 443                 struct dentry *save = *de;
 444                 __u64 bits = 0;
 445
 446                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 447                 if (rc)
 448                         RETURN(rc);
 449
 450                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
 451
 452                 /* We used to query real size from OSTs here, but actually
 453                    this is not needed. For stat() calls size would be updated
 454                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 455                    2.4 and
 456                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 457                    Everybody else who needs correct file size would call
 458                    cl_glimpse_size or some equivalent themselves anyway.
 459                    Also see bug 7198. */
 460                 ll_dops_init(*de, 1, 1);
 461                 *de = ll_find_alias(inode, *de);
 462                 if (*de != save) {
 463                         struct ll_dentry_data *lld = ll_d2d(*de);
 464
 465                         /* just make sure the ll_dentry_data is ready */
 466                         if (unlikely(lld == NULL))
 467                                 ll_dops_init(*de, 1, 1);
 468                 }
 469                 /* we have lookup look - unhide dentry */
 470                 ll_dentry_reset_flags(*de, bits);
 471         } else {
 472                 __u64 ibits;
 473
 474                 ll_dops_init(*de, 1, 1);
 475                 /* Check that parent has UPDATE lock. If there is none, we
 476                    cannot afford to hash this dentry (done by ll_d_add) as it
 477                    might get picked up later when UPDATE lock will appear */
 478                 ibits = MDS_INODELOCK_UPDATE;
 479                 if (ll_have_md_lock(parent, &ibits, LCK_MINMODE)) {
 480                         spin_lock(&dcache_lock);
 481                         ll_d_add(*de, NULL);
 482                         spin_unlock(&dcache_lock);
 483                 } else {
 484                         /* negative lookup - and don't have update lock to
 485                          * parent */
 486                         lock_dentry(*de);
 487                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 488                         unlock_dentry(*de);
 489
 490                         (*de)->d_inode = NULL;
 491                         /* We do not want to hash the dentry if don`t have a
 492                          * lock, but if this dentry is later used in d_move,
 493                          * we'd hit uninitialised list head d_hash, so we just
 494                          * do this to init d_hash field but leave dentry
 495                          * unhashed. (bug 10796). */
 496                         d_rehash(*de);
 497                         d_drop(*de);
 498                 }
 499         }
 500
 501         RETURN(0);
 502 }
 503
 504 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 505                                    struct lookup_intent *it, int lookup_flags)
 506 {
 507         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 508         struct dentry *save = dentry, *retval;
 509         struct ptlrpc_request *req = NULL;
 510         struct md_op_data *op_data;
 511         struct it_cb_data icbd;
 512         __u32 opc;
 513         int rc;
 514         ENTRY;
 515
 516         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 517                 RETURN(ERR_PTR(-ENAMETOOLONG));
 518
 519         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 520                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 521                parent->i_generation, parent, LL_IT2STR(it));
 522
 523         if (d_mountpoint(dentry))
 524                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 525
 526         ll_frob_intent(&it, &lookup_it);
 527
 528         /* As do_lookup is called before follow_mount, root dentry may be left
 529          * not valid, revalidate it here. */
 530         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 531             (it->it_op & (IT_OPEN | IT_CREAT))) {
 532                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
 533                                             MDS_INODELOCK_LOOKUP);
 534                 if (rc)
 535                         RETURN(ERR_PTR(rc));
 536         }
 537
 538         if (it->it_op == IT_GETATTR) {
 539                 rc = ll_statahead_enter(parent, &dentry, 0);
 540                 if (rc == 1) {
 541                         if (dentry == save)
 542                                 GOTO(out, retval = NULL);
 543                         GOTO(out, retval = dentry);
 544                 }
 545         }
 546
 547         icbd.icbd_childp = &dentry;
 548         icbd.icbd_parent = parent;
 549
 550         if (it->it_op & IT_CREAT ||
 551             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 552                 opc = LUSTRE_OPC_CREATE;
 553         else
 554                 opc = LUSTRE_OPC_ANY;
 555
 556         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 557                                      dentry->d_name.len, lookup_flags, opc,
 558                                      NULL);
 559         if (IS_ERR(op_data))
 560                 RETURN((void *)op_data);
 561
 562         it->it_create_mode &= ~cfs_curproc_umask();
 563
 564         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 565                             lookup_flags, &req, ll_md_blocking_ast, 0);
 566         ll_finish_md_op_data(op_data);
 567         if (rc < 0)
 568                 GOTO(out, retval = ERR_PTR(rc));
 569
 570         rc = ll_lookup_it_finish(req, it, &icbd);
 571         if (rc != 0) {
 572                 ll_intent_release(it);
 573                 GOTO(out, retval = ERR_PTR(rc));
 574         }
 575
 576         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 577             !S_ISREG(dentry->d_inode->i_mode) &&
 578             !S_ISDIR(dentry->d_inode->i_mode)) {
 579                 ll_release_openhandle(dentry, it);
 580         }
 581         ll_lookup_finish_locks(it, dentry);
 582
 583         if (dentry == save)
 584                 GOTO(out, retval = NULL);
 585         else
 586                 GOTO(out, retval = dentry);
 587  out:
 588         if (req)
 589                 ptlrpc_req_finished(req);
 590         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
 591                 ll_statahead_mark(parent, dentry);
 592         return retval;
 593 }
 594
 595 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 596                                         int lookup_flags)
 597 {
 598         struct lookup_intent *it;
 599
 600         OBD_ALLOC(it, sizeof(*it));
 601         if (!it)
 602                 return ERR_PTR(-ENOMEM);
 603
 604         if (lookup_flags & LOOKUP_OPEN) {
 605                 it->it_op = IT_OPEN;
 606                 if (lookup_flags & LOOKUP_CREATE)
 607                         it->it_op |= IT_CREAT;
 608                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
 609                 it->it_flags = oit->flags;
 610         } else {
 611                 it->it_op = IT_GETATTR;
 612         }
 613
 614 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 615                 /* Since there is no way to pass our intent to ll_file_open,
 616                  * just check the file is there. Actual open will be done
 617                  * in ll_file_open */
 618                 if (it->it_op & IT_OPEN)
 619                         it->it_op = IT_LOOKUP;
 620 #endif
 621
 622         return it;
 623 }
 624
 625 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 626                                    struct nameidata *nd)
 627 {
 628         struct dentry *de;
 629         ENTRY;
 630
 631         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 632                 struct lookup_intent *it;
 633
 634 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 635                 /* Did we came here from failed revalidate just to propagate
 636                  * its error? */
 637                 if (nd->flags & LOOKUP_OPEN)
 638                         if (IS_ERR(nd->intent.open.file))
 639                                 RETURN((struct dentry *)nd->intent.open.file);
 640 #endif
 641                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 642                         it = ll_d2d(dentry)->lld_it;
 643                         ll_d2d(dentry)->lld_it = NULL;
 644                 } else {
 645                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 646                                 /* We are sure this is new dentry, so we need to create
 647                                    our private data and set the dentry ops */
 648                                 ll_dops_init(dentry, 1, 1);
 649                                 RETURN(NULL);
 650                         }
 651                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 652                         if (IS_ERR(it))
 653                                 RETURN((struct dentry *)it);
 654                 }
 655
 656                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 657                 if (de)
 658                         dentry = de;
 659                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 660                         if (dentry->d_inode &&
 661                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 662 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 663                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 664                                         // We cannot call open here as it would
 665                                         // deadlock.
 666                                         ptlrpc_req_finished(
 667                                                        (struct ptlrpc_request *)
 668                                                           it->d.lustre.it_data);
 669                                 } else {
 670 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 671 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 672  * nd->intent.open.file for error, so we need to return it as lookup's result
 673  * instead */
 674                                         struct file *filp;
 675                                         nd->intent.open.file->private_data = it;
 676                                         filp =lookup_instantiate_filp(nd,dentry,
 677                                                                       NULL);
 678                                         if (IS_ERR(filp)) {
 679                                                 if (de)
 680                                                         dput(de);
 681                                                 de = (struct dentry *) filp;
 682                                         }
 683 #else
 684                                         nd->intent.open.file->private_data = it;
 685                                         (void)lookup_instantiate_filp(nd,dentry,
 686                                                                       NULL);
 687 #endif
 688
 689                                 }
 690 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 691                                 /* Release open handle as we have no way to
 692                                  * pass it to ll_file_open */
 693                                 ll_release_openhandle(dentry, it);
 694 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 695                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 696                                 // XXX This can only reliably work on assumption
 697                                 // that there are NO hashed negative dentries.
 698                                 ll_d2d(dentry)->lld_it = it;
 699                                 it = NULL; /* Will be freed in ll_create_nd */
 700                                 /* We absolutely depend on ll_create_nd to be
 701                                  * called to not leak this intent and possible
 702                                  * data attached to it */
 703                         }
 704                 }
 705
 706                 if (it) {
 707                         ll_intent_release(it);
 708                         OBD_FREE(it, sizeof(*it));
 709                 }
 710         } else {
 711                 de = ll_lookup_it(parent, dentry, NULL, 0);
 712         }
 713
 714         RETURN(de);
 715 }
 716
 717 /* We depend on "mode" being set with the proper file type/umask by now */
 718 static struct inode *ll_create_node(struct inode *dir, const char *name,
 719                                     int namelen, const void *data, int datalen,
 720                                     int mode, __u64 extra,
 721                                     struct lookup_intent *it)
 722 {
 723         struct inode *inode = NULL;
 724         struct ptlrpc_request *request = NULL;
 725         struct ll_sb_info *sbi = ll_i2sbi(dir);
 726         int rc;
 727         ENTRY;
 728
 729         LASSERT(it && it->d.lustre.it_disposition);
 730
 731         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 732         request = it->d.lustre.it_data;
 733         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 734         rc = ll_prep_inode(&inode, request, dir->i_sb);
 735         if (rc)
 736                 GOTO(out, inode = ERR_PTR(rc));
 737
 738         LASSERT(list_empty(&inode->i_dentry));
 739
 740         /* We asked for a lock on the directory, but were granted a
 741          * lock on the inode.  Since we finally have an inode pointer,
 742          * stuff it in the lock. */
 743         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 744                inode, inode->i_ino, inode->i_generation);
 745         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
 746         EXIT;
 747  out:
 748         ptlrpc_req_finished(request);
 749         return inode;
 750 }
 751
 752 /*
 753  * By the time this is called, we already have created the directory cache
 754  * entry for the new file, but it is so far negative - it has no inode.
 755  *
 756  * We defer creating the OBD object(s) until open, to keep the intent and
 757  * non-intent code paths similar, and also because we do not have the MDS
 758  * inode number before calling ll_create_node() (which is needed for LOV),
 759  * so we would need to do yet another RPC to the MDS to store the LOV EA
 760  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 761  * lmm_size in datalen (the MDS still has code which will handle that).
 762  *
 763  * If the create succeeds, we fill in the inode information
 764  * with d_instantiate().
 765  */
 766 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 767                         struct lookup_intent *it)
 768 {
 769         struct inode *inode;
 770         int rc = 0;
 771         ENTRY;
 772
 773         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 774                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 775                dir->i_generation, dir, LL_IT2STR(it));
 776
 777         rc = it_open_error(DISP_OPEN_CREATE, it);
 778         if (rc)
 779                 RETURN(rc);
 780
 781         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 782                                NULL, 0, mode, 0, it);
 783         if (IS_ERR(inode))
 784                 RETURN(PTR_ERR(inode));
 785
 786         d_instantiate(dentry, inode);
 787         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 788          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 789          * successful create. Hash it here. */
 790         spin_lock(&dcache_lock);
 791         if (d_unhashed(dentry))
 792                 d_rehash_cond(dentry, 0);
 793         spin_unlock(&dcache_lock);
 794         RETURN(0);
 795 }
 796
 797 static void ll_update_times(struct ptlrpc_request *request,
 798                             struct inode *inode)
 799 {
 800         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 801                                                        &RMF_MDT_BODY);
 802
 803         LASSERT(body);
 804         if (body->valid & OBD_MD_FLMTIME &&
 805             body->mtime > LTIME_S(inode->i_mtime)) {
 806                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 807                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 808                 LTIME_S(inode->i_mtime) = body->mtime;
 809         }
 810         if (body->valid & OBD_MD_FLCTIME &&
 811             body->ctime > LTIME_S(inode->i_ctime))
 812                 LTIME_S(inode->i_ctime) = body->ctime;
 813 }
 814
 815 static int ll_new_node(struct inode *dir, struct qstr *name,
 816                        const char *tgt, int mode, int rdev,
 817                        struct dentry *dchild, __u32 opc)
 818 {
 819         struct ptlrpc_request *request = NULL;
 820         struct md_op_data *op_data;
 821         struct inode *inode = NULL;
 822         struct ll_sb_info *sbi = ll_i2sbi(dir);
 823         int tgt_len = 0;
 824         int err;
 825
 826         ENTRY;
 827         if (unlikely(tgt != NULL))
 828                 tgt_len = strlen(tgt) + 1;
 829
 830         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 831                                      name->len, 0, opc, NULL);
 832         if (IS_ERR(op_data))
 833                 GOTO(err_exit, err = PTR_ERR(op_data));
 834
 835         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 836                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 837                         cfs_curproc_cap_pack(), rdev, &request);
 838         ll_finish_md_op_data(op_data);
 839         if (err)
 840                 GOTO(err_exit, err);
 841
 842         ll_update_times(request, dir);
 843
 844         if (dchild) {
 845                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 846                 if (err)
 847                      GOTO(err_exit, err);
 848
 849                 d_drop(dchild);
 850                 d_instantiate(dchild, inode);
 851         }
 852         EXIT;
 853 err_exit:
 854         ptlrpc_req_finished(request);
 855
 856         return err;
 857 }
 858
 859 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 860                             unsigned rdev, struct dentry *dchild)
 861 {
 862         int err;
 863         ENTRY;
 864
 865         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 866                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 867                mode, rdev);
 868
 869         mode &= ~cfs_curproc_umask();
 870
 871         switch (mode & S_IFMT) {
 872         case 0:
 873                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 874         case S_IFREG:
 875         case S_IFCHR:
 876         case S_IFBLK:
 877         case S_IFIFO:
 878         case S_IFSOCK:
 879                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 880                                   LUSTRE_OPC_MKNOD);
 881                 break;
 882         case S_IFDIR:
 883                 err = -EPERM;
 884                 break;
 885         default:
 886                 err = -EINVAL;
 887         }
 888         RETURN(err);
 889 }
 890
 891 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 892                         int mode, struct nameidata *nd)
 893 {
 894         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 895         int rc;
 896
 897         if (!it)
 898                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 899
 900         ll_d2d(dentry)->lld_it = NULL;
 901
 902         /* Was there an error? Propagate it! */
 903         if (it->d.lustre.it_status) {
 904                 rc = it->d.lustre.it_status;
 905                 goto out;
 906         }
 907
 908         rc = ll_create_it(dir, dentry, mode, it);
 909 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 910         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 911                 nd->intent.open.file->private_data = it;
 912                 lookup_instantiate_filp(nd, dentry, NULL);
 913         }
 914 #else
 915         ll_release_openhandle(dentry,it);
 916 #endif
 917
 918 out:
 919         ll_intent_release(it);
 920         OBD_FREE(it, sizeof(*it));
 921
 922         return rc;
 923 }
 924
 925 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 926                               const char *tgt, struct dentry *dchild)
 927 {
 928         int err;
 929         ENTRY;
 930
 931         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 932                name->len, name->name, dir->i_ino, dir->i_generation,
 933                dir, 3000, tgt);
 934
 935         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 936                           0, dchild, LUSTRE_OPC_SYMLINK);
 937         RETURN(err);
 938 }
 939
 940 static int ll_link_generic(struct inode *src,  struct inode *dir,
 941                            struct qstr *name, struct dentry *dchild)
 942 {
 943         struct ll_sb_info *sbi = ll_i2sbi(dir);
 944         struct ptlrpc_request *request = NULL;
 945         struct md_op_data *op_data;
 946         int err;
 947
 948         ENTRY;
 949         CDEBUG(D_VFSTRACE,
 950                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 951                src->i_ino, src->i_generation, src, dir->i_ino,
 952                dir->i_generation, dir, name->len, name->name);
 953
 954         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 955                                      0, LUSTRE_OPC_ANY, NULL);
 956         if (IS_ERR(op_data))
 957                 RETURN(PTR_ERR(op_data));
 958
 959         err = md_link(sbi->ll_md_exp, op_data, &request);
 960         ll_finish_md_op_data(op_data);
 961         if (err)
 962                 GOTO(out, err);
 963         if (dchild)
 964                 d_drop(dchild);
 965
 966         ll_update_times(request, dir);
 967         EXIT;
 968 out:
 969         ptlrpc_req_finished(request);
 970         RETURN(err);
 971 }
 972
 973 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 974                             int mode, struct dentry *dchild)
 975
 976 {
 977         int err;
 978         ENTRY;
 979
 980         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 981                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 982
 983         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
 984         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 985
 986         RETURN(err);
 987 }
 988
 989 /* Try to find the child dentry by its name.
 990    If found, put the result fid into @fid. */
 991 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
 992                              struct lu_fid *fid)
 993 {
 994         struct dentry *parent, *child;
 995
 996         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
 997         child = d_lookup(parent, name);
 998         if (child) {
 999                 if (child->d_inode)
1000                         *fid = *ll_inode2fid(child->d_inode);
1001                 dput(child);
1002         }
1003 }
1004
1005 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1006                             struct dentry *dchild, struct qstr *name)
1007 {
1008         struct ptlrpc_request *request = NULL;
1009         struct md_op_data *op_data;
1010         int rc;
1011         ENTRY;
1012
1013         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1014                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1015
1016         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1017                 RETURN(-EBUSY);
1018
1019         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1020                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1021         if (IS_ERR(op_data))
1022                 RETURN(PTR_ERR(op_data));
1023
1024         ll_get_child_fid(dir, name, &op_data->op_fid3);
1025         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1026         ll_finish_md_op_data(op_data);
1027         if (rc == 0)
1028                 ll_update_times(request, dir);
1029         ptlrpc_req_finished(request);
1030         RETURN(rc);
1031 }
1032
1033 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1034 {
1035         struct mdt_body *body;
1036         struct lov_mds_md *eadata;
1037         struct lov_stripe_md *lsm = NULL;
1038         struct obd_trans_info oti = { 0 };
1039         struct obdo *oa;
1040         struct obd_capa *oc = NULL;
1041         int rc;
1042         ENTRY;
1043
1044         /* req is swabbed so this is safe */
1045         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1046         if (!(body->valid & OBD_MD_FLEASIZE))
1047                 RETURN(0);
1048
1049         if (body->eadatasize == 0) {
1050                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1051                 GOTO(out, rc = -EPROTO);
1052         }
1053
1054         /* The MDS sent back the EA because we unlinked the last reference
1055          * to this file. Use this EA to unlink the objects on the OST.
1056          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1057          * check it is complete and sensible. */
1058         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1059                                               body->eadatasize);
1060         LASSERT(eadata != NULL);
1061
1062         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1063         if (rc < 0) {
1064                 CERROR("obd_unpackmd: %d\n", rc);
1065                 GOTO(out, rc);
1066         }
1067         LASSERT(rc >= sizeof(*lsm));
1068
1069         OBDO_ALLOC(oa);
1070         if (oa == NULL)
1071                 GOTO(out_free_memmd, rc = -ENOMEM);
1072
1073         oa->o_id = lsm->lsm_object_id;
1074         oa->o_seq = lsm->lsm_object_seq;
1075         oa->o_mode = body->mode & S_IFMT;
1076         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1077
1078         if (body->valid & OBD_MD_FLCOOKIE) {
1079                 oa->o_valid |= OBD_MD_FLCOOKIE;
1080                 oti.oti_logcookies =
1081                         req_capsule_server_sized_get(&request->rq_pill,
1082                                                      &RMF_LOGCOOKIES,
1083                                                    sizeof(struct llog_cookie) *
1084                                                      lsm->lsm_stripe_count);
1085                 if (oti.oti_logcookies == NULL) {
1086                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1087                         body->valid &= ~OBD_MD_FLCOOKIE;
1088                 }
1089         }
1090
1091         if (body->valid & OBD_MD_FLOSSCAPA) {
1092                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1093                 if (rc)
1094                         GOTO(out_free_memmd, rc);
1095         }
1096
1097         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1098         capa_put(oc);
1099         OBDO_FREE(oa);
1100         if (rc)
1101                 CERROR("obd destroy objid "LPX64" error %d\n",
1102                        lsm->lsm_object_id, rc);
1103  out_free_memmd:
1104         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1105  out:
1106         return rc;
1107 }
1108
1109 /* ll_unlink_generic() doesn't update the inode with the new link count.
1110  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1111  * is any lock existing. They will recycle dentries and inodes based upon locks
1112  * too. b=20433 */
1113 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1114                              struct dentry *dchild, struct qstr *name)
1115 {
1116         struct ptlrpc_request *request = NULL;
1117         struct md_op_data *op_data;
1118         int rc;
1119         ENTRY;
1120         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1121                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1122
1123         /*
1124          * XXX: unlink bind mountpoint maybe call to here,
1125          * just check it as vfs_unlink does.
1126          */
1127         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1128                 RETURN(-EBUSY);
1129
1130         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1131                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1132         if (IS_ERR(op_data))
1133                 RETURN(PTR_ERR(op_data));
1134
1135         ll_get_child_fid(dir, name, &op_data->op_fid3);
1136         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1137         ll_finish_md_op_data(op_data);
1138         if (rc)
1139                 GOTO(out, rc);
1140
1141         ll_update_times(request, dir);
1142
1143         rc = ll_objects_destroy(request, dir);
1144  out:
1145         ptlrpc_req_finished(request);
1146         RETURN(rc);
1147 }
1148
1149 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1150                              struct dentry *src_dchild, struct qstr *src_name,
1151                              struct inode *tgt, struct dentry *tgt_dparent,
1152                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1153 {
1154         struct ptlrpc_request *request = NULL;
1155         struct ll_sb_info *sbi = ll_i2sbi(src);
1156         struct md_op_data *op_data;
1157         int err;
1158         ENTRY;
1159         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1160                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1161                src->i_ino, src->i_generation, src, tgt_name->len,
1162                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1163
1164         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1165             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1166                 RETURN(-EBUSY);
1167
1168         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1169                                      LUSTRE_OPC_ANY, NULL);
1170         if (IS_ERR(op_data))
1171                 RETURN(PTR_ERR(op_data));
1172
1173         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1174         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1175         err = md_rename(sbi->ll_md_exp, op_data,
1176                         src_name->name, src_name->len,
1177                         tgt_name->name, tgt_name->len, &request);
1178         ll_finish_md_op_data(op_data);
1179         if (!err) {
1180                 ll_update_times(request, src);
1181                 ll_update_times(request, tgt);
1182                 err = ll_objects_destroy(request, src);
1183         }
1184
1185         ptlrpc_req_finished(request);
1186
1187         RETURN(err);
1188 }
1189
1190 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1191                     ll_dev_t rdev)
1192 {
1193         return ll_mknod_generic(dir, &dchild->d_name, mode,
1194                                 old_encode_dev(rdev), dchild);
1195 }
1196
1197 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1198 {
1199         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1200 }
1201 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1202 {
1203         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1204 }
1205 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1206 {
1207         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1208 }
1209 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1210                       const char *oldname)
1211 {
1212         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1213 }
1214 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1215                    struct dentry *new_dentry)
1216 {
1217         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1218                                new_dentry);
1219 }
1220 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1221                      struct inode *new_dir, struct dentry *new_dentry)
1222 {
1223         int err;
1224         err = ll_rename_generic(old_dir, NULL,
1225                                  old_dentry, &old_dentry->d_name,
1226                                  new_dir, NULL, new_dentry,
1227                                  &new_dentry->d_name);
1228         if (!err) {
1229 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1230                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1231 #endif
1232                         d_move(old_dentry, new_dentry);
1233         }
1234         return err;
1235 }
1236
1237 struct inode_operations ll_dir_inode_operations = {
1238         .mknod              = ll_mknod,
1239         .lookup             = ll_lookup_nd,
1240         .create             = ll_create_nd,
1241         /* We need all these non-raw things for NFSD, to not patch it. */
1242         .unlink             = ll_unlink,
1243         .mkdir              = ll_mkdir,
1244         .rmdir              = ll_rmdir,
1245         .symlink            = ll_symlink,
1246         .link               = ll_link,
1247         .rename             = ll_rename,
1248         .setattr            = ll_setattr,
1249         .getattr            = ll_getattr,
1250         .permission         = ll_inode_permission,
1251         .setxattr           = ll_setxattr,
1252         .getxattr           = ll_getxattr,
1253         .listxattr          = ll_listxattr,
1254         .removexattr        = ll_removexattr,
1255 };
1256
1257 struct inode_operations ll_special_inode_operations = {
1258         .setattr        = ll_setattr,
1259         .getattr        = ll_getattr,
1260         .permission     = ll_inode_permission,
1261         .setxattr       = ll_setxattr,
1262         .getxattr       = ll_getxattr,
1263         .listxattr      = ll_listxattr,
1264         .removexattr    = ll_removexattr,
1265 };