lustre/llite/namei.c

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