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
  42 extern struct dentry_operations ll_d_ops;
  43
  44 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  45 {
  46         ENTRY;
  47
  48         ldlm_lock_decref(lockh, mode);
  49
  50         RETURN(0);
  51 }
  52
  53 /* Get an inode by inode number (already instantiated by the intent lookup).
  54  * Returns inode or NULL
  55  */
  56 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
  57 #if 0
  58 /* that variant provides correct mapping fid to inode,
  59  * it is put here as alternative way to the current one ll_iget() below */
  60 int ll_test_inode(struct inode *inode, void *opaque)
  61 {
  62         return lu_fid_eq(&ll_i2info(inode)->lli_fid, (struct lu_fid *)opaque);
  63 }
  64
  65 int ll_set_inode(struct inode *inode, void *opaque)
  66 {
  67         struct lu_fid *fid = opaque;
  68         ll_i2info(inode)->lli_fid = *fid;
  69         inode->i_ino = ll_fid_build_ino(ll_s2sbi(inode->i_sb), fid);
  70         return 0;
  71 }
  72
  73 struct inode *ll_iget(struct super_block *sb, ino_t hash,
  74                       struct lustre_md *md)
  75 {
  76         struct ll_inode_info *lli;
  77         struct inode *inode;
  78         LASSERT(hash != 0);
  79
  80         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode,
  81                              &md->body->fid1);
  82         if (inode) {
  83                 if (inode->i_state & I_NEW) {
  84                         lli = ll_i2info(inode);
  85                         ll_read_inode2(inode, md);
  86                         unlock_new_inode(inode);
  87                 } else {
  88                         ll_update_inode(inode, md);
  89                 }
  90                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n",
  91                        inode->i_ino, inode->i_generation, inode);
  92         }
  93
  94         return inode;
  95 }
  96 #else
  97 struct inode *ll_iget(struct super_block *sb, ino_t hash,
  98                       struct lustre_md *md)
  99 {
 100         struct ll_inode_info *lli;
 101         struct inode *inode;
 102         LASSERT(hash != 0);
 103
 104         inode = iget_locked(sb, hash);
 105         if (inode) {
 106                 if (inode->i_state & I_NEW) {
 107                         lli = ll_i2info(inode);
 108                         ll_read_inode2(inode, md);
 109                         unlock_new_inode(inode);
 110                 } else {
 111                         ll_update_inode(inode, md);
 112                 }
 113                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n",
 114                        inode->i_ino, inode->i_generation, inode);
 115         }
 116
 117         return inode;
 118 }
 119 #endif
 120 #else
 121 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 122                       struct lustre_md *md)
 123 {
 124         struct inode *inode;
 125         LASSERT(hash != 0);
 126
 127         inode = iget4(sb, hash, NULL, md);
 128         if (inode) {
 129                 if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 130                         ll_update_inode(inode, md);
 131
 132                 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n",
 133                        inode->i_ino, inode->i_generation, inode);
 134         }
 135         return inode;
 136 }
 137 #endif
 138
 139 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 140                        void *data, int flag)
 141 {
 142         int rc;
 143         struct lustre_handle lockh;
 144         ENTRY;
 145
 146         switch (flag) {
 147         case LDLM_CB_BLOCKING:
 148                 ldlm_lock2handle(lock, &lockh);
 149                 rc = ldlm_cli_cancel(&lockh);
 150                 if (rc < 0) {
 151                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 152                         RETURN(rc);
 153                 }
 154                 break;
 155         case LDLM_CB_CANCELING: {
 156                 struct inode *inode = ll_inode_from_lock(lock);
 157                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 158                 struct lu_fid *fid;
 159
 160                 /* Invalidate all dentries associated with this inode */
 161                 if (inode == NULL)
 162                         break;
 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                                 if (!FMODE_EXEC)
 181                                         CERROR("open PR lock without FMODE_EXEC\n");
 182                                 break;
 183                         case LCK_CR:
 184                                 flags = FMODE_READ;
 185                                 break;
 186                         default:
 187                                 CERROR("Unexpected lock mode for OPEN lock "
 188                                        "%d, inode %ld\n", lock->l_req_mode,
 189                                        inode->i_ino);
 190                         }
 191                         ll_md_real_close(inode, flags);
 192                 }
 193
 194                 if (bits & MDS_INODELOCK_UPDATE)
 195                         ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 196
 197                 if (S_ISDIR(inode->i_mode) &&
 198                      (bits & MDS_INODELOCK_UPDATE)) {
 199                         struct dentry *dentry, *tmp, *dir;
 200                         struct list_head *list;
 201
 202                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 203                                inode->i_ino);
 204                         truncate_inode_pages(inode->i_mapping, 0);
 205
 206
 207                         /* Drop possible cached negative dentries */
 208                         list = &inode->i_dentry;
 209                         dir = NULL;
 210                         spin_lock(&dcache_lock);
 211
 212                         /* It is possible to have several dentries (with
 213                            racer?) */
 214                         while ((list = list->next) != &inode->i_dentry) {
 215                                 dir = list_entry(list, struct dentry, d_alias);
 216 #ifdef LUSTRE_KERNEL_VERSION
 217                                 if (!(dir->d_flags & DCACHE_LUSTRE_INVALID))
 218 #else
 219                                 if (!d_unhashed(dir))
 220 #endif
 221                                         break;
 222
 223                                 dir = NULL;
 224                         }
 225
 226                         if (dir) {
 227 restart:
 228                                 list_for_each_entry_safe(dentry, tmp,
 229                                                          &dir->d_subdirs,
 230                                                          d_child)
 231                                 {
 232                                         /* XXX Print some debug here? */
 233                                         if (!dentry->d_inode)
 234                                                 /* Negative dentry. If we were
 235                                                    dropping dcache lock, go
 236                                                    throught the list again */
 237                                                 if (ll_drop_dentry(dentry))
 238                                                         goto restart;
 239                                 }
 240                         }
 241                         spin_unlock(&dcache_lock);
 242                 }
 243
 244                 if (inode->i_sb->s_root &&
 245                     inode != inode->i_sb->s_root->d_inode &&
 246                     (bits & MDS_INODELOCK_LOOKUP))
 247                         ll_unhash_aliases(inode);
 248                 iput(inode);
 249                 break;
 250         }
 251         default:
 252                 LBUG();
 253         }
 254
 255         RETURN(0);
 256 }
 257
 258 /* Pack the required supplementary groups into the supplied groups array.
 259  * If we don't need to use the groups from the target inode(s) then we
 260  * instead pack one or more groups from the user's supplementary group
 261  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 262 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 263 {
 264         int i;
 265
 266         LASSERT(i1 != NULL);
 267         LASSERT(suppgids != NULL);
 268
 269         if (in_group_p(i1->i_gid))
 270                 suppgids[0] = i1->i_gid;
 271         else
 272                 suppgids[0] = -1;
 273
 274         if (i2) {
 275                 if (in_group_p(i2->i_gid))
 276                         suppgids[1] = i2->i_gid;
 277                 else
 278                         suppgids[1] = -1;
 279         } else {
 280                 suppgids[1] = -1;
 281         }
 282
 283         for (i = 0; i < current_ngroups; i++) {
 284                 if (suppgids[0] == -1) {
 285                         if (current_groups[i] != suppgids[1])
 286                                 suppgids[0] = current_groups[i];
 287                         continue;
 288                 }
 289                 if (suppgids[1] == -1) {
 290                         if (current_groups[i] != suppgids[0])
 291                                 suppgids[1] = current_groups[i];
 292                         continue;
 293                 }
 294                 break;
 295         }
 296 }
 297
 298 static void ll_d_add(struct dentry *de, struct inode *inode)
 299 {
 300         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 301         /* d_instantiate */
 302         if (!list_empty(&de->d_alias)) {
 303                 spin_unlock(&dcache_lock);
 304                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 305                        de->d_name.len, de->d_name.name, de,
 306                        de->d_alias.next, de->d_alias.prev);
 307                 LBUG();
 308         }
 309         if (inode)
 310                 list_add(&de->d_alias, &inode->i_dentry);
 311         de->d_inode = inode;
 312
 313         /* d_rehash */
 314         if (!d_unhashed(de)) {
 315                 spin_unlock(&dcache_lock);
 316                 CERROR("dentry %.*s %p hash next %p\n",
 317                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 318                 LBUG();
 319         }
 320         __d_rehash(de, 0);
 321 }
 322
 323 /* 2.6.15 and prior versions have buggy d_instantiate_unique that leaks an inode
 324  * if suitable alias is found. But we are not going to fix it by just freeing
 325  * such inode, because if some vendor's kernel contains this bugfix already,
 326  * we will break everything then. We will use our own reimplementation
 327  * instead. */
 328 #if !defined(HAVE_D_ADD_UNIQUE) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16))
 329 /* Search "inode"'s alias list for a dentry that has the same name and parent as
 330  * de.  If found, return it.  If not found, return de. */
 331 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 332 {
 333         struct list_head *tmp;
 334
 335         spin_lock(&dcache_lock);
 336         list_for_each(tmp, &inode->i_dentry) {
 337                 struct dentry *dentry = list_entry(tmp, struct dentry, d_alias);
 338
 339                 /* We are called here with 'de' already on the aliases list. */
 340                 if (dentry == de) {
 341                         CERROR("whoops\n");
 342                         continue;
 343                 }
 344
 345                 if (dentry->d_parent != de->d_parent)
 346                         continue;
 347
 348                 if (dentry->d_name.len != de->d_name.len)
 349                         continue;
 350
 351                 if (memcmp(dentry->d_name.name, de->d_name.name,
 352                            de->d_name.len) != 0)
 353                         continue;
 354
 355                 dget_locked(dentry);
 356                 lock_dentry(dentry);
 357                 __d_drop(dentry);
 358 #ifdef LUSTRE_KERNEL_VERSION
 359                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 360 #endif
 361                 unlock_dentry(dentry);
 362                 __d_rehash(dentry, 0); /* avoid taking dcache_lock inside */
 363                 spin_unlock(&dcache_lock);
 364                 iput(inode);
 365                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 366                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 367                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 368                 return dentry;
 369         }
 370
 371         ll_d_add(de, inode);
 372
 373         spin_unlock(&dcache_lock);
 374
 375         return de;
 376 }
 377 #else
 378 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 379 {
 380         struct dentry *dentry;
 381
 382         dentry = d_add_unique(de, inode);
 383 #ifdef LUSTRE_KERNEL_VERSION
 384         if (dentry) {
 385                 lock_dentry(dentry);
 386                 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
 387                 unlock_dentry(dentry);
 388         }
 389 #endif
 390
 391         return dentry?dentry:de;
 392 }
 393 #endif
 394
 395 static int lookup_it_finish(struct ptlrpc_request *request, int offset,
 396                             struct lookup_intent *it, void *data)
 397 {
 398         struct it_cb_data *icbd = data;
 399         struct dentry **de = icbd->icbd_childp;
 400         struct inode *parent = icbd->icbd_parent;
 401         struct ll_sb_info *sbi = ll_i2sbi(parent);
 402         struct inode *inode = NULL;
 403         int rc;
 404
 405         /* NB 1 request reference will be taken away by ll_intent_lock()
 406          * when I return */
 407         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 408                 ENTRY;
 409
 410                 rc = ll_prep_inode(&inode, request, offset,
 411                                    (*de)->d_sb);
 412                 if (rc)
 413                         RETURN(rc);
 414
 415                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 416                        inode, inode->i_ino, inode->i_generation);
 417                 md_set_lock_data(sbi->ll_md_exp,
 418                                  &it->d.lustre.it_lock_handle, inode);
 419
 420                 /* We used to query real size from OSTs here, but actually
 421                    this is not needed. For stat() calls size would be updated
 422                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 423                    2.4 and
 424                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 425                    Everybody else who needs correct file size would call
 426                    ll_glimpse_size or some equivalent themselves anyway.
 427                    Also see bug 7198. */
 428
 429                 *de = ll_find_alias(inode, *de);
 430         } else {
 431                 ENTRY;
 432                 /* Check that parent has UPDATE lock. If there is none, we
 433                    cannot afford to hash this dentry (done by ll_d_add) as it
 434                    might get picked up later when UPDATE lock will appear */
 435                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 436                         spin_lock(&dcache_lock);
 437                         ll_d_add(*de, inode);
 438                         spin_unlock(&dcache_lock);
 439                 } else {
 440                         (*de)->d_inode = NULL;
 441                 }
 442         }
 443
 444         ll_set_dd(*de);
 445         (*de)->d_op = &ll_d_ops;
 446
 447         RETURN(0);
 448 }
 449
 450 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 451                                    struct lookup_intent *it, int lookup_flags)
 452 {
 453         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 454         struct dentry *save = dentry, *retval;
 455         struct ptlrpc_request *req = NULL;
 456         struct md_op_data *op_data;
 457         struct it_cb_data icbd;
 458         int rc;
 459         ENTRY;
 460
 461         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 462                 RETURN(ERR_PTR(-ENAMETOOLONG));
 463
 464         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 465                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 466                parent->i_generation, parent, LL_IT2STR(it));
 467
 468         if (d_mountpoint(dentry))
 469                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 470
 471         ll_frob_intent(&it, &lookup_it);
 472
 473         icbd.icbd_childp = &dentry;
 474         icbd.icbd_parent = parent;
 475
 476         /* prepare operatoin hint first */
 477
 478         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 479                                      dentry->d_name.len, lookup_flags);
 480         if (op_data == NULL)
 481                 RETURN(ERR_PTR(-ENOMEM));
 482
 483         /* allocate new fid for child */
 484         if (it->it_op & IT_CREAT ||
 485             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT)) {
 486                 struct lu_placement_hint hint = { .ph_pname = NULL,
 487                                                   .ph_pfid = ll_inode2fid(parent),
 488                                                   .ph_cname = &dentry->d_name,
 489                                                   .ph_opc = LUSTRE_OPC_CREATE };
 490
 491                 rc = ll_fid_md_alloc(ll_i2sbi(parent), &op_data->fid2, &hint);
 492                 if (rc) {
 493                         ll_finish_md_op_data(op_data);
 494                         LASSERT(rc < 0);
 495                         RETURN(ERR_PTR(rc));
 496                 }
 497         }
 498
 499         it->it_create_mode &= ~current->fs->umask;
 500
 501         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 502                             lookup_flags, &req, ll_md_blocking_ast, 0);
 503         ll_finish_md_op_data(op_data);
 504         if (rc < 0)
 505                 GOTO(out, retval = ERR_PTR(rc));
 506
 507         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 508         if (rc != 0) {
 509                 ll_intent_release(it);
 510                 GOTO(out, retval = ERR_PTR(rc));
 511         }
 512
 513         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 514             !S_ISREG(dentry->d_inode->i_mode) &&
 515             !S_ISDIR(dentry->d_inode->i_mode)) {
 516                 ll_release_openhandle(dentry, it);
 517         }
 518         ll_lookup_finish_locks(it, dentry);
 519
 520         if (dentry == save)
 521                 GOTO(out, retval = NULL);
 522         else
 523                 GOTO(out, retval = dentry);
 524  out:
 525         if (req)
 526                 ptlrpc_req_finished(req);
 527         return retval;
 528 }
 529
 530 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 531 #ifdef LUSTRE_KERNEL_VERSION
 532 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 533                                    struct nameidata *nd)
 534 {
 535         struct dentry *de;
 536         ENTRY;
 537
 538         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 539                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 540         else
 541                 de = ll_lookup_it(parent, dentry, NULL, 0);
 542
 543         RETURN(de);
 544 }
 545 #else
 546 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 547                                         int lookup_flags)
 548 {
 549         struct lookup_intent *it;
 550
 551         OBD_ALLOC(it, sizeof(*it));
 552         if (!it)
 553                 return ERR_PTR(-ENOMEM);
 554
 555         if (lookup_flags & LOOKUP_OPEN) {
 556                 it->it_op = IT_OPEN;
 557                 if (lookup_flags & LOOKUP_CREATE)
 558                         it->it_op |= IT_CREAT;
 559                 it->it_create_mode = oit->create_mode;
 560                 it->it_flags = oit->flags;
 561         } else {
 562                 it->it_op = IT_GETATTR;
 563         }
 564
 565 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 566                 /* Since there is no way to pass our intent to ll_file_open,
 567                  * just check the file is there. Actual open will be done
 568                  * in ll_file_open */
 569                 if (it->it_op & IT_OPEN)
 570                         it->it_op = IT_LOOKUP;
 571 #endif
 572
 573         return it;
 574 }
 575
 576 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 577                                    struct nameidata *nd)
 578 {
 579         struct dentry *de;
 580         ENTRY;
 581
 582         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 583                 struct lookup_intent *it;
 584
 585 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 586                 /* Did we came here from failed revalidate just to propagate
 587                  * its error? */
 588                 if (nd->flags & LOOKUP_OPEN)
 589                         if (IS_ERR(nd->intent.open.file))
 590                                 RETURN((struct dentry *)nd->intent.open.file);
 591 #endif
 592
 593                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 594                         it = ll_d2d(dentry)->lld_it;
 595                         ll_d2d(dentry)->lld_it = NULL;
 596                 } else {
 597                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 598                         if (IS_ERR(it))
 599                                 RETURN((struct dentry *)it);
 600                 }
 601
 602                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 603                 if (de)
 604                         dentry = de;
 605                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 606                         if (dentry->d_inode &&
 607                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 608 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 609                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 610                                         // We cannot call open here as it would
 611                                         // deadlock.
 612                                         ptlrpc_req_finished(
 613                                                        (struct ptlrpc_request *)
 614                                                           it->d.lustre.it_data);
 615                                 } else {
 616                                         struct file *filp;
 617                                         nd->intent.open.file->private_data = it;
 618                                         filp =lookup_instantiate_filp(nd,dentry,
 619                                                                       NULL);
 620 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 621 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 622  * nd->intent.open.file for error, so we need to return it as lookup's result
 623  * instead */
 624                                         if (IS_ERR(filp)) {
 625                                                 if (de)
 626                                                         dput(de);
 627                                                 de = (struct dentry *) filp;
 628                                         }
 629 #endif
 630
 631                                 }
 632 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 633                                 /* Release open handle as we have no way to
 634                                  * pass it to ll_file_open */
 635                                 ll_release_openhandle(dentry, it);
 636 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 637                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 638                                 // XXX This can only reliably work on assumption
 639                                 // that there are NO hashed negative dentries.
 640                                 ll_d2d(dentry)->lld_it = it;
 641                                 it = NULL; /* Will be freed in ll_create_nd */
 642                                 /* We absolutely depend on ll_create_nd to be
 643                                  * called to not leak this intent and possible
 644                                  * data attached to it */
 645                         }
 646                 }
 647
 648                 if (it) {
 649                         ll_intent_release(it);
 650                         OBD_FREE(it, sizeof(*it));
 651                 }
 652         } else {
 653                 de = ll_lookup_it(parent, dentry, NULL, 0);
 654         }
 655
 656         RETURN(de);
 657 }
 658 #endif
 659 #endif
 660
 661 /* We depend on "mode" being set with the proper file type/umask by now */
 662 static struct inode *ll_create_node(struct inode *dir, const char *name,
 663                                     int namelen, const void *data, int datalen,
 664                                     int mode, __u64 extra,
 665                                     struct lookup_intent *it)
 666 {
 667         struct inode *inode = NULL;
 668         struct ptlrpc_request *request = NULL;
 669         struct ll_sb_info *sbi = ll_i2sbi(dir);
 670         int rc;
 671         ENTRY;
 672
 673         LASSERT(it && it->d.lustre.it_disposition);
 674
 675         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 676         request = it->d.lustre.it_data;
 677         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 678         rc = ll_prep_inode(&inode, request, DLM_REPLY_REC_OFF, dir->i_sb);
 679         if (rc)
 680                 GOTO(out, inode = ERR_PTR(rc));
 681
 682         LASSERT(list_empty(&inode->i_dentry));
 683
 684         /* We asked for a lock on the directory, but were granted a
 685          * lock on the inode.  Since we finally have an inode pointer,
 686          * stuff it in the lock. */
 687         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 688                inode, inode->i_ino, inode->i_generation);
 689         md_set_lock_data(sbi->ll_md_exp,
 690                          &it->d.lustre.it_lock_handle, inode);
 691         EXIT;
 692  out:
 693         ptlrpc_req_finished(request);
 694         return inode;
 695 }
 696
 697 /*
 698  * By the time this is called, we already have created the directory cache
 699  * entry for the new file, but it is so far negative - it has no inode.
 700  *
 701  * We defer creating the OBD object(s) until open, to keep the intent and
 702  * non-intent code paths similar, and also because we do not have the MDS
 703  * inode number before calling ll_create_node() (which is needed for LOV),
 704  * so we would need to do yet another RPC to the MDS to store the LOV EA
 705  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 706  * lmm_size in datalen (the MDS still has code which will handle that).
 707  *
 708  * If the create succeeds, we fill in the inode information
 709  * with d_instantiate().
 710  */
 711 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 712                         struct lookup_intent *it)
 713 {
 714         struct inode *inode;
 715         int rc = 0;
 716         ENTRY;
 717
 718         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 719                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 720                dir->i_generation, dir, LL_IT2STR(it));
 721
 722         rc = it_open_error(DISP_OPEN_CREATE, it);
 723         if (rc)
 724                 RETURN(rc);
 725
 726         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 727                                NULL, 0, mode, 0, it);
 728         if (IS_ERR(inode)) {
 729                 RETURN(PTR_ERR(inode));
 730         }
 731
 732         d_instantiate(dentry, inode);
 733         RETURN(0);
 734 }
 735
 736 static void ll_update_times(struct ptlrpc_request *request, int offset,
 737                             struct inode *inode)
 738 {
 739         struct mdt_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 740                                                sizeof(*body));
 741         LASSERT(body);
 742
 743         /* mtime is always updated with ctime, but can be set in past.
 744            As write and utime(2) may happen within 1 second, and utime's
 745            mtime has a priority over write's one, so take mtime from mds
 746            for the same ctimes. */
 747         if (body->valid & OBD_MD_FLCTIME &&
 748             body->ctime >= LTIME_S(inode->i_ctime)) {
 749                 LTIME_S(inode->i_ctime) = body->ctime;
 750
 751                 if (body->valid & OBD_MD_FLMTIME) {
 752                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
 753                                "to "LPU64"\n", inode->i_ino,
 754                                LTIME_S(inode->i_mtime), body->mtime);
 755                         LTIME_S(inode->i_mtime) = body->mtime;
 756                 }
 757         }
 758 }
 759
 760 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 761                             unsigned rdev, struct dentry *dchild)
 762 {
 763         struct ptlrpc_request *request = NULL;
 764         struct inode *inode = NULL;
 765         struct ll_sb_info *sbi = ll_i2sbi(dir);
 766         struct md_op_data *op_data;
 767         struct lu_placement_hint hint = {
 768                 .ph_pname = NULL,
 769                 .ph_pfid = ll_inode2fid(dir),
 770                 .ph_cname = name,
 771                 .ph_opc = LUSTRE_OPC_MKNOD
 772         };
 773         int err;
 774         ENTRY;
 775
 776         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 777                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 778                mode, rdev);
 779
 780         mode &= ~current->fs->umask;
 781
 782         switch (mode & S_IFMT) {
 783         case 0:
 784         case S_IFREG:
 785                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 786         case S_IFCHR:
 787         case S_IFBLK:
 788         case S_IFIFO:
 789         case S_IFSOCK:
 790                 op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 791                                              name->len, 0);
 792                 if (op_data == NULL)
 793                         RETURN(-ENOMEM);
 794                 err = ll_fid_md_alloc(sbi, &op_data->fid2, &hint);
 795                 if (err) {
 796                         ll_finish_md_op_data(op_data);
 797                         break;
 798                 }
 799                 err = md_create(sbi->ll_md_exp, op_data, NULL, 0, mode,
 800                                 current->fsuid, current->fsgid,
 801                                 current->cap_effective, rdev, &request);
 802                 ll_finish_md_op_data(op_data);
 803                 if (err)
 804                         break;
 805                 ll_update_times(request, REPLY_REC_OFF, dir);
 806
 807                 if (dchild) {
 808                         err = ll_prep_inode(&inode, request, REPLY_REC_OFF,
 809                                             dchild->d_sb);
 810                         if (err)
 811                                 break;
 812
 813                         d_instantiate(dchild, inode);
 814                 }
 815                 break;
 816         case S_IFDIR:
 817                 err = -EPERM;
 818                 break;
 819         default:
 820                 err = -EINVAL;
 821         }
 822         ptlrpc_req_finished(request);
 823         RETURN(err);
 824 }
 825
 826 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 827 #ifndef LUSTRE_KERNEL_VERSION
 828 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 829 {
 830         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 831         int rc;
 832
 833         if (!it)
 834                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 835
 836         ll_d2d(dentry)->lld_it = NULL;
 837
 838         /* Was there an error? Propagate it! */
 839         if (it->d.lustre.it_status) {
 840                 rc = it->d.lustre.it_status;
 841                 goto out;
 842         }
 843
 844         rc = ll_create_it(dir, dentry, mode, it);
 845 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 846         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 847                 nd->intent.open.file->private_data = it;
 848                 lookup_instantiate_filp(nd, dentry, NULL);
 849         }
 850 #else
 851         ll_release_openhandle(dentry,it);
 852 #endif
 853
 854 out:
 855         ll_intent_release(it);
 856         OBD_FREE(it, sizeof(*it));
 857
 858         return rc;
 859 }
 860 #else
 861 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 862 {
 863         if (!nd || !nd->intent.d.lustre.it_disposition)
 864                 /* No saved request? Just mknod the file */
 865                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 866
 867         return ll_create_it(dir, dentry, mode, &nd->intent);
 868 }
 869 #endif
 870 #endif
 871
 872 static int ll_symlink_generic(struct inode *dir, struct dentry *dchild,
 873                               const char *tgt)
 874 {
 875         struct qstr *name = &dchild->d_name;
 876         struct lu_placement_hint hint = { .ph_pname = NULL,
 877                                           .ph_pfid = ll_inode2fid(dir),
 878                                           .ph_cname = name,
 879                                           .ph_opc = LUSTRE_OPC_SYMLINK };
 880
 881         struct ptlrpc_request *request = NULL;
 882         struct ll_sb_info *sbi = ll_i2sbi(dir);
 883         struct inode *inode = NULL;
 884         struct md_op_data *op_data;
 885         int err;
 886         ENTRY;
 887
 888         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%s\n",
 889                name->len, name->name, dir->i_ino, dir->i_generation,
 890                dir, tgt);
 891
 892         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0);
 893         if (op_data == NULL)
 894                 RETURN(-ENOMEM);
 895
 896         /* allocate new fid */
 897         err = ll_fid_md_alloc(ll_i2sbi(dir), &op_data->fid2, &hint);
 898         if (err) {
 899                 ll_finish_md_op_data(op_data);
 900                 RETURN(err);
 901         }
 902
 903         err = md_create(sbi->ll_md_exp, op_data,
 904                         tgt, strlen(tgt) + 1, S_IFLNK | S_IRWXUGO,
 905                         current->fsuid, current->fsgid, current->cap_effective,
 906                         0, &request);
 907         ll_finish_md_op_data(op_data);
 908         if (err == 0) {
 909                 ll_update_times(request, REPLY_REC_OFF, dir);
 910
 911                 if (dchild) {
 912                         err = ll_prep_inode(&inode, request, REPLY_REC_OFF,
 913                                             dchild->d_sb);
 914                         if (err == 0)
 915                                 d_instantiate(dchild, inode);
 916                 }
 917         }
 918
 919         ptlrpc_req_finished(request);
 920         RETURN(err);
 921 }
 922
 923 static int ll_link_generic(struct inode *src,  struct inode *dir,
 924                            struct qstr *name)
 925 {
 926         struct ll_sb_info *sbi = ll_i2sbi(dir);
 927         struct ptlrpc_request *request = NULL;
 928         struct md_op_data *op_data;
 929         int err;
 930
 931         ENTRY;
 932         CDEBUG(D_VFSTRACE,
 933                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 934                src->i_ino, src->i_generation, src, dir->i_ino,
 935                dir->i_generation, dir, name->len, name->name);
 936
 937         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len, 0);
 938         if (op_data == NULL)
 939                 RETURN(-ENOMEM);
 940         err = md_link(sbi->ll_md_exp, op_data, &request);
 941         ll_finish_md_op_data(op_data);
 942         if (err == 0)
 943                 ll_update_times(request, REPLY_REC_OFF, dir);
 944
 945         ptlrpc_req_finished(request);
 946         RETURN(err);
 947 }
 948
 949 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 950                             int mode, struct dentry *dchild)
 951
 952 {
 953         struct lu_placement_hint hint = { .ph_pname = NULL,
 954                                           .ph_pfid = ll_inode2fid(dir),
 955                                           .ph_cname = name,
 956                                           .ph_opc = LUSTRE_OPC_MKDIR };
 957         struct ptlrpc_request *request = NULL;
 958         struct ll_sb_info *sbi = ll_i2sbi(dir);
 959         struct inode *inode = NULL;
 960         struct md_op_data *op_data;
 961         int err;
 962         ENTRY;
 963
 964         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 965                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 966
 967         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
 968
 969         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0);
 970         if (op_data == NULL)
 971                 RETURN(-ENOMEM);
 972
 973         /* Allocate new fid. */
 974         err = ll_fid_md_alloc(ll_i2sbi(dir), &op_data->fid2, &hint);
 975         if (err) {
 976                 ll_finish_md_op_data(op_data);
 977                 RETURN(err);
 978         }
 979
 980         err = md_create(sbi->ll_md_exp, op_data, NULL, 0, mode,
 981                         current->fsuid, current->fsgid,
 982                         current->cap_effective, 0, &request);
 983
 984         ll_finish_md_op_data(op_data);
 985         if (err == 0) {
 986                 ll_update_times(request, REPLY_REC_OFF, dir);
 987                 if (dchild) {
 988                         err = ll_prep_inode(&inode, request, REPLY_REC_OFF,
 989                                             dchild->d_sb);
 990                         if (err == 0)
 991                                 d_instantiate(dchild, inode);
 992                 }
 993         }
 994         if (request != NULL)
 995                 ptlrpc_req_finished(request);
 996         RETURN(err);
 997 }
 998
 999 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1000                             struct qstr *name)
1001 {
1002         struct ptlrpc_request *request = NULL;
1003         struct md_op_data *op_data;
1004         struct dentry *dentry;
1005         int rc;
1006         ENTRY;
1007         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1008                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1009
1010         /* Check if we have something mounted at the dir we are going to delete
1011          * In such a case there would always be dentry present. */
1012         if (dparent) {
1013                 dentry = d_lookup(dparent, name);
1014                 if (dentry) {
1015                         int mounted = d_mountpoint(dentry);
1016                         dput(dentry);
1017                         if (mounted)
1018                                 RETURN(-EBUSY);
1019                 }
1020         }
1021
1022         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1023                                      S_IFDIR);
1024         if (op_data == NULL)
1025                 RETURN(-ENOMEM);
1026         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1027         ll_finish_md_op_data(op_data);
1028         if (rc == 0)
1029                 ll_update_times(request, REPLY_REC_OFF, dir);
1030         ptlrpc_req_finished(request);
1031         RETURN(rc);
1032 }
1033
1034 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1035 {
1036         struct mdt_body *body;
1037         struct lov_mds_md *eadata;
1038         struct lov_stripe_md *lsm = NULL;
1039         struct obd_trans_info oti = { 0 };
1040         struct obdo *oa;
1041         int rc;
1042         ENTRY;
1043
1044         /* req is swabbed so this is safe */
1045         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1046
1047         if (!(body->valid & OBD_MD_FLEASIZE))
1048                 RETURN(0);
1049
1050         if (body->eadatasize == 0) {
1051                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1052                 GOTO(out, rc = -EPROTO);
1053         }
1054
1055         /* The MDS sent back the EA because we unlinked the last reference
1056          * to this file. Use this EA to unlink the objects on the OST.
1057          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1058          * check it is complete and sensible. */
1059         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1060                                     body->eadatasize, NULL);
1061         LASSERT(eadata != NULL);
1062         if (eadata == NULL) {
1063                 CERROR("Can't unpack MDS EA data\n");
1064                 GOTO(out, rc = -EPROTO);
1065         }
1066
1067         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1068         if (rc < 0) {
1069                 CERROR("obd_unpackmd: %d\n", rc);
1070                 GOTO(out, rc);
1071         }
1072         LASSERT(rc >= sizeof(*lsm));
1073
1074         rc = obd_checkmd(ll_i2dtexp(dir), ll_i2mdexp(dir), lsm);
1075         if (rc)
1076                 GOTO(out_free_memmd, rc);
1077
1078         oa = obdo_alloc();
1079         if (oa == NULL)
1080                 GOTO(out_free_memmd, rc = -ENOMEM);
1081
1082         oa->o_id = lsm->lsm_object_id;
1083         oa->o_gr = lsm->lsm_object_gr;
1084         oa->o_mode = body->mode & S_IFMT;
1085         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1086
1087         if (body->valid & OBD_MD_FLCOOKIE) {
1088                 oa->o_valid |= OBD_MD_FLCOOKIE;
1089                 oti.oti_logcookies =
1090                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1091                                        sizeof(struct llog_cookie) *
1092                                        lsm->lsm_stripe_count);
1093                 if (oti.oti_logcookies == NULL) {
1094                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1095                         body->valid &= ~OBD_MD_FLCOOKIE;
1096                 }
1097         }
1098
1099         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir));
1100         obdo_free(oa);
1101         if (rc)
1102                 CERROR("obd destroy objid "LPX64" error %d\n",
1103                        lsm->lsm_object_id, rc);
1104  out_free_memmd:
1105         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1106  out:
1107         return rc;
1108 }
1109
1110 static int ll_unlink_generic(struct inode *dir, struct qstr *name)
1111 {
1112         struct ptlrpc_request *request = NULL;
1113         struct md_op_data *op_data;
1114         int rc;
1115         ENTRY;
1116         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1117                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1118
1119         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0);
1120         if (op_data == NULL)
1121                 RETURN(-ENOMEM);
1122         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1123         ll_finish_md_op_data(op_data);
1124
1125         if (rc)
1126                 GOTO(out, rc);
1127
1128         ll_update_times(request, REPLY_REC_OFF, dir);
1129
1130         rc = ll_objects_destroy(request, dir);
1131  out:
1132         ptlrpc_req_finished(request);
1133         RETURN(rc);
1134 }
1135
1136 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1137                              struct inode *tgt, struct qstr *tgt_name)
1138 {
1139         struct ptlrpc_request *request = NULL;
1140         struct ll_sb_info *sbi = ll_i2sbi(src);
1141         struct md_op_data *op_data;
1142         int err;
1143         ENTRY;
1144         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1145                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1146                src->i_ino, src->i_generation, src, tgt_name->len,
1147                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1148
1149         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0);
1150         if (op_data == NULL)
1151                 RETURN(-ENOMEM);
1152         err = md_rename(sbi->ll_md_exp, op_data,
1153                         src_name->name, src_name->len,
1154                         tgt_name->name, tgt_name->len, &request);
1155         ll_finish_md_op_data(op_data);
1156         if (!err) {
1157                 ll_update_times(request, REPLY_REC_OFF, src);
1158                 ll_update_times(request, REPLY_REC_OFF, tgt);
1159                 err = ll_objects_destroy(request, src);
1160         }
1161
1162         ptlrpc_req_finished(request);
1163
1164         RETURN(err);
1165 }
1166
1167 #ifdef LUSTRE_KERNEL_VERSION
1168 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1169 {
1170         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1171 }
1172 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1173 {
1174         return ll_rename_generic(srcnd->dentry->d_inode, &srcnd->last,
1175                                  tgtnd->dentry->d_inode, &tgtnd->last);
1176 }
1177 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1178 {
1179         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1180                                &tgtnd->last);
1181 }
1182 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1183 {
1184         return -EOPNOTSUPP;
1185 }
1186 static int ll_rmdir_raw(struct nameidata *nd)
1187 {
1188         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1189 }
1190 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1191 {
1192         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1193 }
1194 static int ll_unlink_raw(struct nameidata *nd)
1195 {
1196         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1197 }
1198 #endif
1199
1200 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1201                     ll_dev_t rdev)
1202 {
1203         return ll_mknod_generic(dir, &dchild->d_name, mode,
1204                                 old_encode_dev(rdev), dchild);
1205 }
1206
1207 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1208 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1209 {
1210         return ll_unlink_generic(dir, &dentry->d_name);
1211 }
1212 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1213 {
1214         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1215 }
1216 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1217 {
1218         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1219 }
1220 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1221                       const char *oldname)
1222 {
1223         return ll_symlink_generic(dir, dentry, oldname);
1224 }
1225 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1226                    struct dentry *new_dentry)
1227 {
1228         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name);
1229 }
1230 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1231                      struct inode *new_dir, struct dentry *new_dentry)
1232 {
1233         return ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1234                                &new_dentry->d_name);
1235 }
1236 #endif
1237
1238 struct inode_operations ll_dir_inode_operations = {
1239 #ifdef LUSTRE_KERNEL_VERSION
1240         .link_raw           = ll_link_raw,
1241         .unlink_raw         = ll_unlink_raw,
1242         .symlink_raw        = ll_symlink_raw,
1243         .mkdir_raw          = ll_mkdir_raw,
1244         .rmdir_raw          = ll_rmdir_raw,
1245         .mknod_raw          = ll_mknod_raw,
1246         .rename_raw         = ll_rename_raw,
1247         .setattr            = ll_setattr,
1248         .setattr_raw        = ll_setattr_raw,
1249 #endif
1250         .mknod              = ll_mknod,
1251 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1252         .create_it          = ll_create_it,
1253         .lookup_it          = ll_lookup_it,
1254         .revalidate_it      = ll_inode_revalidate_it,
1255 #else
1256         .lookup             = ll_lookup_nd,
1257         .create             = ll_create_nd,
1258         /* We need all these non-raw things for NFSD, to not patch it. */
1259         .unlink             = ll_unlink,
1260         .mkdir              = ll_mkdir,
1261         .rmdir              = ll_rmdir,
1262         .symlink            = ll_symlink,
1263         .link               = ll_link,
1264         .rename             = ll_rename,
1265         .setattr            = ll_setattr,
1266         .getattr            = ll_getattr,
1267 #endif
1268         .permission         = ll_inode_permission,
1269         .setxattr           = ll_setxattr,
1270         .getxattr           = ll_getxattr,
1271         .listxattr          = ll_listxattr,
1272         .removexattr        = ll_removexattr,
1273 };
1274
1275 struct inode_operations ll_special_inode_operations = {
1276 #ifdef LUSTRE_KERNEL_VERSION
1277         .setattr_raw    = ll_setattr_raw,
1278 #endif
1279         .setattr        = ll_setattr,
1280 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1281         .getattr        = ll_getattr,
1282 #else
1283         .revalidate_it  = ll_inode_revalidate_it,
1284 #endif
1285         .permission     = ll_inode_permission,
1286         .setxattr       = ll_setxattr,
1287         .getxattr       = ll_getxattr,
1288         .listxattr      = ll_listxattr,
1289         .removexattr    = ll_removexattr,
1290 };