lustre/llite/namei.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Whamcloud, Inc.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #include <linux/fs.h>
  38 #include <linux/sched.h>
  39 #include <linux/mm.h>
  40 #include <linux/quotaops.h>
  41 #include <linux/highmem.h>
  42 #include <linux/pagemap.h>
  43 #include <linux/security.h>
  44
  45 #define DEBUG_SUBSYSTEM S_LLITE
  46
  47 #include <obd_support.h>
  48 #include <lustre_fid.h>
  49 #include <lustre_lite.h>
  50 #include <lustre_dlm.h>
  51 #include <lustre_ver.h>
  52 #include "llite_internal.h"
  53
  54 /*
  55  * Check if we have something mounted at the named dchild.
  56  * In such a case there would always be dentry present.
  57  */
  58 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  59                            struct qstr *name)
  60 {
  61         int mounted = 0;
  62
  63         if (unlikely(dchild)) {
  64                 mounted = d_mountpoint(dchild);
  65         } else if (dparent) {
  66                 dchild = d_lookup(dparent, name);
  67                 if (dchild) {
  68                         mounted = d_mountpoint(dchild);
  69                         dput(dchild);
  70                 }
  71         }
  72         return mounted;
  73 }
  74
  75 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  76 {
  77         ENTRY;
  78
  79         ldlm_lock_decref(lockh, mode);
  80
  81         RETURN(0);
  82 }
  83
  84
  85 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  86 static int ll_test_inode(struct inode *inode, void *opaque)
  87 {
  88         struct ll_inode_info *lli = ll_i2info(inode);
  89         struct lustre_md     *md = opaque;
  90
  91         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  92                 CERROR("MDS body missing FID\n");
  93                 return 0;
  94         }
  95
  96         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
  97                 return 0;
  98
  99         return 1;
 100 }
 101
 102 static int ll_set_inode(struct inode *inode, void *opaque)
 103 {
 104         struct ll_inode_info *lli = ll_i2info(inode);
 105         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
 106
 107         if (unlikely(!(body->valid & OBD_MD_FLID))) {
 108                 CERROR("MDS body missing FID\n");
 109                 return -EINVAL;
 110         }
 111
 112         lli->lli_fid = body->fid1;
 113         if (unlikely(!(body->valid & OBD_MD_FLTYPE))) {
 114                 CERROR("Can not initialize inode "DFID" without object type: "
 115                        "valid = "LPX64"\n", PFID(&lli->lli_fid), body->valid);
 116                 return -EINVAL;
 117         }
 118
 119         inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mode & S_IFMT);
 120         if (unlikely(inode->i_mode == 0)) {
 121                 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
 122                 return -EINVAL;
 123         }
 124
 125         ll_lli_init(lli);
 126
 127         return 0;
 128 }
 129
 130
 131 /*
 132  * Get an inode by inode number (already instantiated by the intent lookup).
 133  * Returns inode or NULL
 134  */
 135 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 136                       struct lustre_md *md)
 137 {
 138         struct inode         *inode;
 139         ENTRY;
 140
 141         LASSERT(hash != 0);
 142         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 143
 144         if (inode) {
 145                 if (inode->i_state & I_NEW) {
 146                         int rc = 0;
 147
 148                         ll_read_inode2(inode, md);
 149                         if (S_ISREG(inode->i_mode) &&
 150                             ll_i2info(inode)->lli_clob == NULL)
 151                                 rc = cl_file_inode_init(inode, md);
 152                         if (rc != 0) {
 153                                 md->lsm = NULL;
 154                                 make_bad_inode(inode);
 155                                 unlock_new_inode(inode);
 156                                 iput(inode);
 157                                 inode = ERR_PTR(rc);
 158                         } else
 159                                 unlock_new_inode(inode);
 160                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 161                         ll_update_inode(inode, md);
 162                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 163                        inode, PFID(&md->body->fid1));
 164         }
 165         RETURN(inode);
 166 }
 167
 168 static void ll_invalidate_negative_children(struct inode *dir)
 169 {
 170         struct dentry *dentry, *tmp_subdir;
 171
 172         ll_lock_dcache(dir);
 173         list_for_each_entry(dentry, &dir->i_dentry, d_alias) {
 174                 spin_lock(&dentry->d_lock);
 175                 if (!list_empty(&dentry->d_subdirs)) {
 176                         struct dentry *child;
 177
 178                         list_for_each_entry_safe(child, tmp_subdir,
 179                                                  &dentry->d_subdirs,
 180                                                  d_u.d_child) {
 181                                 if (child->d_inode == NULL)
 182                                         d_lustre_invalidate(child);
 183                         }
 184                 }
 185                 spin_unlock(&dentry->d_lock);
 186         }
 187         ll_unlock_dcache(dir);
 188 }
 189
 190 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 191                        void *data, int flag)
 192 {
 193         int rc;
 194         struct lustre_handle lockh;
 195         ENTRY;
 196
 197         switch (flag) {
 198         case LDLM_CB_BLOCKING:
 199                 ldlm_lock2handle(lock, &lockh);
 200                 rc = ldlm_cli_cancel(&lockh);
 201                 if (rc < 0) {
 202                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 203                         RETURN(rc);
 204                 }
 205                 break;
 206         case LDLM_CB_CANCELING: {
 207                 struct inode *inode = ll_inode_from_lock(lock);
 208                 struct ll_inode_info *lli;
 209                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 210                 struct lu_fid *fid;
 211                 ldlm_mode_t mode = lock->l_req_mode;
 212
 213                 /* Invalidate all dentries associated with this inode */
 214                 if (inode == NULL)
 215                         break;
 216
 217                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 218                 /* For OPEN locks we differentiate between lock modes
 219                  * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
 220                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
 221                             MDS_INODELOCK_LAYOUT))
 222                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
 223
 224                 if (bits & MDS_INODELOCK_OPEN)
 225                         ll_have_md_lock(inode, &bits, mode);
 226
 227                 fid = ll_inode2fid(inode);
 228                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 229                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 230                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 231                         LDLM_ERROR(lock, "data mismatch with object "
 232                                    DFID" (%p)", PFID(fid), inode);
 233                 }
 234
 235                 if (bits & MDS_INODELOCK_OPEN) {
 236                         int flags = 0;
 237                         switch (lock->l_req_mode) {
 238                         case LCK_CW:
 239                                 flags = FMODE_WRITE;
 240                                 break;
 241                         case LCK_PR:
 242                                 flags = FMODE_EXEC;
 243                                 break;
 244                         case LCK_CR:
 245                                 flags = FMODE_READ;
 246                                 break;
 247                         default:
 248                                 CERROR("Unexpected lock mode for OPEN lock "
 249                                        "%d, inode %ld\n", lock->l_req_mode,
 250                                        inode->i_ino);
 251                         }
 252                         ll_md_real_close(inode, flags);
 253                 }
 254
 255                 lli = ll_i2info(inode);
 256                 if (bits & MDS_INODELOCK_LAYOUT) {
 257                         struct cl_object_conf conf = { .coc_inode = inode,
 258                                                        .coc_invalidate = true };
 259                         rc = ll_layout_conf(inode, &conf);
 260                         if (rc)
 261                                 CDEBUG(D_INODE, "invaliding layout %d.\n", rc);
 262                 }
 263
 264                 if (bits & MDS_INODELOCK_UPDATE)
 265                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 266
 267                 if (S_ISDIR(inode->i_mode) &&
 268                      (bits & MDS_INODELOCK_UPDATE)) {
 269                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 270                                inode->i_ino);
 271                         truncate_inode_pages(inode->i_mapping, 0);
 272                         ll_invalidate_negative_children(inode);
 273                 }
 274
 275                 if (inode->i_sb->s_root &&
 276                     inode != inode->i_sb->s_root->d_inode &&
 277                     (bits & MDS_INODELOCK_LOOKUP))
 278                         ll_invalidate_aliases(inode);
 279                 iput(inode);
 280                 break;
 281         }
 282         default:
 283                 LBUG();
 284         }
 285
 286         RETURN(0);
 287 }
 288
 289 __u32 ll_i2suppgid(struct inode *i)
 290 {
 291         if (cfs_curproc_is_in_groups(i->i_gid))
 292                 return (__u32)i->i_gid;
 293         else
 294                 return (__u32)(-1);
 295 }
 296
 297 /* Pack the required supplementary groups into the supplied groups array.
 298  * If we don't need to use the groups from the target inode(s) then we
 299  * instead pack one or more groups from the user's supplementary group
 300  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 301 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 302 {
 303 #if 0
 304         int i;
 305 #endif
 306
 307         LASSERT(i1 != NULL);
 308         LASSERT(suppgids != NULL);
 309
 310         suppgids[0] = ll_i2suppgid(i1);
 311
 312         if (i2)
 313                 suppgids[1] = ll_i2suppgid(i2);
 314                 else
 315                         suppgids[1] = -1;
 316
 317 #if 0
 318         for (i = 0; i < current_ngroups; i++) {
 319                 if (suppgids[0] == -1) {
 320                         if (current_groups[i] != suppgids[1])
 321                                 suppgids[0] = current_groups[i];
 322                         continue;
 323                 }
 324                 if (suppgids[1] == -1) {
 325                         if (current_groups[i] != suppgids[0])
 326                                 suppgids[1] = current_groups[i];
 327                         continue;
 328                 }
 329                 break;
 330         }
 331 #endif
 332 }
 333
 334 /*
 335  * try to reuse three types of dentry:
 336  * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
 337  *    by concurrent .revalidate).
 338  * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
 339  *    be cleared by others calling d_lustre_revalidate).
 340  * 3. DISCONNECTED alias.
 341  */
 342 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
 343 {
 344         struct dentry *alias, *discon_alias, *invalid_alias;
 345
 346         if (list_empty(&inode->i_dentry))
 347                 return NULL;
 348
 349         discon_alias = invalid_alias = NULL;
 350
 351         ll_lock_dcache(inode);
 352         list_for_each_entry(alias, &inode->i_dentry, d_alias) {
 353                 LASSERT(alias != dentry);
 354
 355                 spin_lock(&alias->d_lock);
 356                 if (alias->d_flags & DCACHE_DISCONNECTED)
 357                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
 358                         discon_alias = alias;
 359                 else if (alias->d_parent == dentry->d_parent             &&
 360                          alias->d_name.hash == dentry->d_name.hash       &&
 361                          alias->d_name.len == dentry->d_name.len         &&
 362                          memcmp(alias->d_name.name, dentry->d_name.name,
 363                                 dentry->d_name.len) == 0)
 364                         invalid_alias = alias;
 365                 spin_unlock(&alias->d_lock);
 366
 367                 if (invalid_alias)
 368                         break;
 369         }
 370         alias = invalid_alias ?: discon_alias ?: NULL;
 371         if (alias) {
 372                 spin_lock(&alias->d_lock);
 373                 dget_dlock(alias);
 374                 spin_unlock(&alias->d_lock);
 375         }
 376         ll_unlock_dcache(inode);
 377
 378         return alias;
 379 }
 380
 381 /*
 382  * Similar to d_splice_alias(), but lustre treats invalid alias
 383  * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
 384  */
 385 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
 386 {
 387         struct dentry *new;
 388
 389         if (inode) {
 390                 new = ll_find_alias(inode, de);
 391                 if (new) {
 392                         ll_dops_init(new, 1, 1);
 393                         d_move(new, de);
 394                         iput(inode);
 395                         CDEBUG(D_DENTRY,
 396                                "Reuse dentry %p inode %p refc %d flags %#x\n",
 397                               new, new->d_inode, d_refcount(new), new->d_flags);
 398                         return new;
 399                 }
 400         }
 401         ll_dops_init(de, 1, 1);
 402         __d_lustre_invalidate(de);
 403         d_add(de, inode);
 404         CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
 405                de, de->d_inode, d_refcount(de), de->d_flags);
 406         return de;
 407 }
 408
 409 int ll_lookup_it_finish(struct ptlrpc_request *request,
 410                         struct lookup_intent *it, void *data)
 411 {
 412         struct it_cb_data *icbd = data;
 413         struct dentry **de = icbd->icbd_childp;
 414         struct inode *parent = icbd->icbd_parent;
 415         struct inode *inode = NULL;
 416         __u64 bits = 0;
 417         int rc;
 418         ENTRY;
 419
 420         /* NB 1 request reference will be taken away by ll_intent_lock()
 421          * when I return */
 422         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 423                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 424                 if (rc)
 425                         RETURN(rc);
 426
 427                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
 428
 429                 /* We used to query real size from OSTs here, but actually
 430                    this is not needed. For stat() calls size would be updated
 431                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 432                    2.4 and
 433                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 434                    Everybody else who needs correct file size would call
 435                    ll_glimpse_size or some equivalent themselves anyway.
 436                    Also see bug 7198. */
 437         }
 438
 439         *de = ll_splice_alias(inode, *de);
 440
 441         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 442                 /* we have lookup look - unhide dentry */
 443                 if (bits & MDS_INODELOCK_LOOKUP)
 444                         d_lustre_revalidate(*de);
 445         } else {
 446                 /* Check that parent has UPDATE lock. */
 447                 struct lookup_intent parent_it = {
 448                                         .it_op = IT_GETATTR,
 449                                         .d.lustre.it_lock_handle = 0 };
 450
 451                 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
 452                                        &ll_i2info(parent)->lli_fid, NULL)) {
 453                         d_lustre_revalidate(*de);
 454                         ll_intent_release(&parent_it);
 455                 }
 456         }
 457
 458         RETURN(0);
 459 }
 460
 461 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 462                                    struct lookup_intent *it, int lookup_flags)
 463 {
 464         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 465         struct dentry *save = dentry, *retval;
 466         struct ptlrpc_request *req = NULL;
 467         struct md_op_data *op_data;
 468         struct it_cb_data icbd;
 469         __u32 opc;
 470         int rc;
 471         ENTRY;
 472
 473         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 474                 RETURN(ERR_PTR(-ENAMETOOLONG));
 475
 476         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 477                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 478                parent->i_generation, parent, LL_IT2STR(it));
 479
 480         if (d_mountpoint(dentry))
 481                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 482
 483         ll_frob_intent(&it, &lookup_it);
 484
 485         /* As do_lookup is called before follow_mount, root dentry may be left
 486          * not valid, revalidate it here. */
 487         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 488             (it->it_op & (IT_OPEN | IT_CREAT))) {
 489                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
 490                                             MDS_INODELOCK_LOOKUP);
 491                 if (rc)
 492                         RETURN(ERR_PTR(rc));
 493         }
 494
 495         if (it->it_op == IT_GETATTR) {
 496                 rc = ll_statahead_enter(parent, &dentry, 0);
 497                 if (rc == 1) {
 498                         if (dentry == save)
 499                                 GOTO(out, retval = NULL);
 500                         GOTO(out, retval = dentry);
 501                 }
 502         }
 503
 504         icbd.icbd_childp = &dentry;
 505         icbd.icbd_parent = parent;
 506
 507         if (it->it_op & IT_CREAT ||
 508             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 509                 opc = LUSTRE_OPC_CREATE;
 510         else
 511                 opc = LUSTRE_OPC_ANY;
 512
 513         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 514                                      dentry->d_name.len, lookup_flags, opc,
 515                                      NULL);
 516         if (IS_ERR(op_data))
 517                 RETURN((void *)op_data);
 518
 519         /* enforce umask if acl disabled or MDS doesn't support umask */
 520         if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
 521                 it->it_create_mode &= ~cfs_curproc_umask();
 522
 523         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 524                             lookup_flags, &req, ll_md_blocking_ast, 0);
 525         ll_finish_md_op_data(op_data);
 526         if (rc < 0)
 527                 GOTO(out, retval = ERR_PTR(rc));
 528
 529         rc = ll_lookup_it_finish(req, it, &icbd);
 530         if (rc != 0) {
 531                 ll_intent_release(it);
 532                 GOTO(out, retval = ERR_PTR(rc));
 533         }
 534
 535         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 536             !S_ISREG(dentry->d_inode->i_mode) &&
 537             !S_ISDIR(dentry->d_inode->i_mode)) {
 538                 ll_release_openhandle(dentry, it);
 539         }
 540         ll_lookup_finish_locks(it, dentry);
 541
 542         if (dentry == save)
 543                 GOTO(out, retval = NULL);
 544         else
 545                 GOTO(out, retval = dentry);
 546  out:
 547         if (req)
 548                 ptlrpc_req_finished(req);
 549         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
 550                 ll_statahead_mark(parent, dentry);
 551         return retval;
 552 }
 553
 554 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 555                                         int lookup_flags)
 556 {
 557         struct lookup_intent *it;
 558
 559         OBD_ALLOC(it, sizeof(*it));
 560         if (!it)
 561                 return ERR_PTR(-ENOMEM);
 562
 563         if (lookup_flags & LOOKUP_OPEN) {
 564                 it->it_op = IT_OPEN;
 565                 if (lookup_flags & LOOKUP_CREATE)
 566                         it->it_op |= IT_CREAT;
 567                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
 568                 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags);
 569         } else {
 570                 it->it_op = IT_GETATTR;
 571         }
 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 (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 586                         it = ll_d2d(dentry)->lld_it;
 587                         ll_d2d(dentry)->lld_it = NULL;
 588                 } else {
 589                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 590                                 /* We are sure this is new dentry, so we need to create
 591                                    our private data and set the dentry ops */
 592                                 ll_dops_init(dentry, 1, 1);
 593                                 __d_lustre_invalidate(dentry);
 594                                 d_add(dentry, NULL);
 595                                 RETURN(NULL);
 596                         }
 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                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 609                                         // We cannot call open here as it would
 610                                         // deadlock.
 611                                         ptlrpc_req_finished(
 612                                                        (struct ptlrpc_request *)
 613                                                           it->d.lustre.it_data);
 614                                 } else {
 615                                         struct file *filp;
 616
 617                                         nd->intent.open.file->private_data = it;
 618                                         filp = lookup_instantiate_filp(nd,
 619                                                                        dentry,
 620                                                                        NULL);
 621                                         if (IS_ERR(filp)) {
 622                                                 if (de)
 623                                                         dput(de);
 624                                                 de = (struct dentry *)filp;
 625                                         }
 626                                 }
 627                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 628                                 // XXX This can only reliably work on assumption
 629                                 // that there are NO hashed negative dentries.
 630                                 ll_d2d(dentry)->lld_it = it;
 631                                 it = NULL; /* Will be freed in ll_create_nd */
 632                                 /* We absolutely depend on ll_create_nd to be
 633                                  * called to not leak this intent and possible
 634                                  * data attached to it */
 635                         }
 636                 }
 637
 638                 if (it) {
 639                         ll_intent_release(it);
 640                         OBD_FREE(it, sizeof(*it));
 641                 }
 642         } else {
 643                 de = ll_lookup_it(parent, dentry, NULL, 0);
 644         }
 645
 646         RETURN(de);
 647 }
 648
 649 /* We depend on "mode" being set with the proper file type/umask by now */
 650 static struct inode *ll_create_node(struct inode *dir, const char *name,
 651                                     int namelen, const void *data, int datalen,
 652                                     int mode, __u64 extra,
 653                                     struct lookup_intent *it)
 654 {
 655         struct inode *inode = NULL;
 656         struct ptlrpc_request *request = NULL;
 657         struct ll_sb_info *sbi = ll_i2sbi(dir);
 658         int rc;
 659         ENTRY;
 660
 661         LASSERT(it && it->d.lustre.it_disposition);
 662
 663         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 664         request = it->d.lustre.it_data;
 665         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 666         rc = ll_prep_inode(&inode, request, dir->i_sb);
 667         if (rc)
 668                 GOTO(out, inode = ERR_PTR(rc));
 669
 670         LASSERT(list_empty(&inode->i_dentry));
 671
 672         /* We asked for a lock on the directory, but were granted a
 673          * lock on the inode.  Since we finally have an inode pointer,
 674          * stuff it in the lock. */
 675         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 676                inode, inode->i_ino, inode->i_generation);
 677         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
 678         EXIT;
 679  out:
 680         ptlrpc_req_finished(request);
 681         return inode;
 682 }
 683
 684 /*
 685  * By the time this is called, we already have created the directory cache
 686  * entry for the new file, but it is so far negative - it has no inode.
 687  *
 688  * We defer creating the OBD object(s) until open, to keep the intent and
 689  * non-intent code paths similar, and also because we do not have the MDS
 690  * inode number before calling ll_create_node() (which is needed for LOV),
 691  * so we would need to do yet another RPC to the MDS to store the LOV EA
 692  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 693  * lmm_size in datalen (the MDS still has code which will handle that).
 694  *
 695  * If the create succeeds, we fill in the inode information
 696  * with d_instantiate().
 697  */
 698 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 699                         struct lookup_intent *it)
 700 {
 701         struct inode *inode;
 702         int rc = 0;
 703         ENTRY;
 704
 705         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 706                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 707                dir->i_generation, dir, LL_IT2STR(it));
 708
 709         rc = it_open_error(DISP_OPEN_CREATE, it);
 710         if (rc)
 711                 RETURN(rc);
 712
 713         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 714                                NULL, 0, mode, 0, it);
 715         if (IS_ERR(inode))
 716                 RETURN(PTR_ERR(inode));
 717
 718         d_instantiate(dentry, inode);
 719         RETURN(0);
 720 }
 721
 722 static void ll_update_times(struct ptlrpc_request *request,
 723                             struct inode *inode)
 724 {
 725         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 726                                                        &RMF_MDT_BODY);
 727
 728         LASSERT(body);
 729         if (body->valid & OBD_MD_FLMTIME &&
 730             body->mtime > LTIME_S(inode->i_mtime)) {
 731                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 732                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 733                 LTIME_S(inode->i_mtime) = body->mtime;
 734         }
 735         if (body->valid & OBD_MD_FLCTIME &&
 736             body->ctime > LTIME_S(inode->i_ctime))
 737                 LTIME_S(inode->i_ctime) = body->ctime;
 738 }
 739
 740 static int ll_new_node(struct inode *dir, struct qstr *name,
 741                        const char *tgt, int mode, int rdev,
 742                        struct dentry *dchild, __u32 opc)
 743 {
 744         struct ptlrpc_request *request = NULL;
 745         struct md_op_data *op_data;
 746         struct inode *inode = NULL;
 747         struct ll_sb_info *sbi = ll_i2sbi(dir);
 748         int tgt_len = 0;
 749         int err;
 750
 751         ENTRY;
 752         if (unlikely(tgt != NULL))
 753                 tgt_len = strlen(tgt) + 1;
 754
 755         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 756                                      name->len, 0, opc, NULL);
 757         if (IS_ERR(op_data))
 758                 GOTO(err_exit, err = PTR_ERR(op_data));
 759
 760         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 761                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 762                         cfs_curproc_cap_pack(), rdev, &request);
 763         ll_finish_md_op_data(op_data);
 764         if (err)
 765                 GOTO(err_exit, err);
 766
 767         ll_update_times(request, dir);
 768
 769         if (dchild) {
 770                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 771                 if (err)
 772                      GOTO(err_exit, err);
 773
 774                 d_instantiate(dchild, inode);
 775         }
 776         EXIT;
 777 err_exit:
 778         ptlrpc_req_finished(request);
 779
 780         return err;
 781 }
 782
 783 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 784                             unsigned rdev, struct dentry *dchild)
 785 {
 786         int err;
 787         ENTRY;
 788
 789         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 790                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 791                mode, rdev);
 792
 793         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
 794                 mode &= ~cfs_curproc_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
 814         if (!err)
 815                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
 816
 817         RETURN(err);
 818 }
 819
 820 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 821                         int mode, struct nameidata *nd)
 822 {
 823         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 824         int rc;
 825
 826         if (!it)
 827                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 828
 829         ll_d2d(dentry)->lld_it = NULL;
 830
 831         /* Was there an error? Propagate it! */
 832         if (it->d.lustre.it_status) {
 833                 rc = it->d.lustre.it_status;
 834                 goto out;
 835         }
 836
 837         rc = ll_create_it(dir, dentry, mode, it);
 838         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 839                 struct file *filp;
 840
 841                 nd->intent.open.file->private_data = it;
 842                 filp = lookup_instantiate_filp(nd, dentry, NULL);
 843                 if (IS_ERR(filp))
 844                         rc = PTR_ERR(filp);
 845         }
 846
 847 out:
 848         ll_intent_release(it);
 849         OBD_FREE(it, sizeof(*it));
 850
 851         if (!rc)
 852                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
 853
 854         return rc;
 855 }
 856
 857 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 858                               const char *tgt, struct dentry *dchild)
 859 {
 860         int err;
 861         ENTRY;
 862
 863         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 864                name->len, name->name, dir->i_ino, dir->i_generation,
 865                dir, 3000, tgt);
 866
 867         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 868                           0, dchild, LUSTRE_OPC_SYMLINK);
 869
 870         if (!err)
 871                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
 872
 873         RETURN(err);
 874 }
 875
 876 static int ll_link_generic(struct inode *src,  struct inode *dir,
 877                            struct qstr *name, struct dentry *dchild)
 878 {
 879         struct ll_sb_info *sbi = ll_i2sbi(dir);
 880         struct ptlrpc_request *request = NULL;
 881         struct md_op_data *op_data;
 882         int err;
 883
 884         ENTRY;
 885         CDEBUG(D_VFSTRACE,
 886                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 887                src->i_ino, src->i_generation, src, dir->i_ino,
 888                dir->i_generation, dir, name->len, name->name);
 889
 890         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 891                                      0, LUSTRE_OPC_ANY, NULL);
 892         if (IS_ERR(op_data))
 893                 RETURN(PTR_ERR(op_data));
 894
 895         err = md_link(sbi->ll_md_exp, op_data, &request);
 896         ll_finish_md_op_data(op_data);
 897         if (err)
 898                 GOTO(out, err);
 899
 900         ll_update_times(request, dir);
 901         ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
 902         EXIT;
 903 out:
 904         ptlrpc_req_finished(request);
 905         RETURN(err);
 906 }
 907
 908 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 909                             int mode, struct dentry *dchild)
 910
 911 {
 912         int err;
 913         ENTRY;
 914
 915         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 916                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 917
 918         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
 919                 mode &= ~cfs_curproc_umask();
 920         mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
 921         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 922
 923         if (!err)
 924                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
 925
 926         RETURN(err);
 927 }
 928
 929 /* Try to find the child dentry by its name.
 930    If found, put the result fid into @fid. */
 931 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
 932                              struct lu_fid *fid)
 933 {
 934         struct dentry *parent, *child;
 935
 936         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
 937         child = d_lookup(parent, name);
 938         if (child) {
 939                 if (child->d_inode)
 940                         *fid = *ll_inode2fid(child->d_inode);
 941                 dput(child);
 942         }
 943 }
 944
 945 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
 946                             struct dentry *dchild, struct qstr *name)
 947 {
 948         struct ptlrpc_request *request = NULL;
 949         struct md_op_data *op_data;
 950         int rc;
 951         ENTRY;
 952
 953         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 954                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 955
 956         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
 957                 RETURN(-EBUSY);
 958
 959         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
 960                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
 961         if (IS_ERR(op_data))
 962                 RETURN(PTR_ERR(op_data));
 963
 964         ll_get_child_fid(dir, name, &op_data->op_fid3);
 965         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
 966         ll_finish_md_op_data(op_data);
 967         if (rc == 0) {
 968                 ll_update_times(request, dir);
 969                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
 970         }
 971
 972         ptlrpc_req_finished(request);
 973         RETURN(rc);
 974 }
 975
 976 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
 977 {
 978         struct mdt_body *body;
 979         struct lov_mds_md *eadata;
 980         struct lov_stripe_md *lsm = NULL;
 981         struct obd_trans_info oti = { 0 };
 982         struct obdo *oa;
 983         struct obd_capa *oc = NULL;
 984         int rc;
 985         ENTRY;
 986
 987         /* req is swabbed so this is safe */
 988         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
 989         if (!(body->valid & OBD_MD_FLEASIZE))
 990                 RETURN(0);
 991
 992         if (body->eadatasize == 0) {
 993                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
 994                 GOTO(out, rc = -EPROTO);
 995         }
 996
 997         /* The MDS sent back the EA because we unlinked the last reference
 998          * to this file. Use this EA to unlink the objects on the OST.
 999          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1000          * check it is complete and sensible. */
1001         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1002                                               body->eadatasize);
1003         LASSERT(eadata != NULL);
1004
1005         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1006         if (rc < 0) {
1007                 CERROR("obd_unpackmd: %d\n", rc);
1008                 GOTO(out, rc);
1009         }
1010         LASSERT(rc >= sizeof(*lsm));
1011
1012         OBDO_ALLOC(oa);
1013         if (oa == NULL)
1014                 GOTO(out_free_memmd, rc = -ENOMEM);
1015
1016         oa->o_id = lsm->lsm_object_id;
1017         oa->o_seq = lsm->lsm_object_seq;
1018         oa->o_mode = body->mode & S_IFMT;
1019         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1020
1021         if (body->valid & OBD_MD_FLCOOKIE) {
1022                 oa->o_valid |= OBD_MD_FLCOOKIE;
1023                 oti.oti_logcookies =
1024                         req_capsule_server_sized_get(&request->rq_pill,
1025                                                      &RMF_LOGCOOKIES,
1026                                                    sizeof(struct llog_cookie) *
1027                                                      lsm->lsm_stripe_count);
1028                 if (oti.oti_logcookies == NULL) {
1029                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1030                         body->valid &= ~OBD_MD_FLCOOKIE;
1031                 }
1032         }
1033
1034         if (body->valid & OBD_MD_FLOSSCAPA) {
1035                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1036                 if (rc)
1037                         GOTO(out_free_memmd, rc);
1038         }
1039
1040         rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
1041                          ll_i2mdexp(dir), oc);
1042         capa_put(oc);
1043         OBDO_FREE(oa);
1044         if (rc)
1045                 CERROR("obd destroy objid "LPX64" error %d\n",
1046                        lsm->lsm_object_id, rc);
1047  out_free_memmd:
1048         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1049  out:
1050         return rc;
1051 }
1052
1053 /* ll_unlink_generic() doesn't update the inode with the new link count.
1054  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1055  * is any lock existing. They will recycle dentries and inodes based upon locks
1056  * too. b=20433 */
1057 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1058                              struct dentry *dchild, struct qstr *name)
1059 {
1060         struct ptlrpc_request *request = NULL;
1061         struct md_op_data *op_data;
1062         int rc;
1063         ENTRY;
1064         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1065                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1066
1067         /*
1068          * XXX: unlink bind mountpoint maybe call to here,
1069          * just check it as vfs_unlink does.
1070          */
1071         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1072                 RETURN(-EBUSY);
1073
1074         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1075                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1076         if (IS_ERR(op_data))
1077                 RETURN(PTR_ERR(op_data));
1078
1079         ll_get_child_fid(dir, name, &op_data->op_fid3);
1080         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1081         ll_finish_md_op_data(op_data);
1082         if (rc)
1083                 GOTO(out, rc);
1084
1085         ll_update_times(request, dir);
1086         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1087
1088         rc = ll_objects_destroy(request, dir);
1089  out:
1090         ptlrpc_req_finished(request);
1091         RETURN(rc);
1092 }
1093
1094 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1095                              struct dentry *src_dchild, struct qstr *src_name,
1096                              struct inode *tgt, struct dentry *tgt_dparent,
1097                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1098 {
1099         struct ptlrpc_request *request = NULL;
1100         struct ll_sb_info *sbi = ll_i2sbi(src);
1101         struct md_op_data *op_data;
1102         int err;
1103         ENTRY;
1104         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1105                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1106                src->i_ino, src->i_generation, src, tgt_name->len,
1107                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1108
1109         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1110             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1111                 RETURN(-EBUSY);
1112
1113         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1114                                      LUSTRE_OPC_ANY, NULL);
1115         if (IS_ERR(op_data))
1116                 RETURN(PTR_ERR(op_data));
1117
1118         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1119         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1120         err = md_rename(sbi->ll_md_exp, op_data,
1121                         src_name->name, src_name->len,
1122                         tgt_name->name, tgt_name->len, &request);
1123         ll_finish_md_op_data(op_data);
1124         if (!err) {
1125                 ll_update_times(request, src);
1126                 ll_update_times(request, tgt);
1127                 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1128                 err = ll_objects_destroy(request, src);
1129         }
1130
1131         ptlrpc_req_finished(request);
1132
1133         RETURN(err);
1134 }
1135
1136 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1137                     dev_t rdev)
1138 {
1139         return ll_mknod_generic(dir, &dchild->d_name, mode,
1140                                 old_encode_dev(rdev), dchild);
1141 }
1142
1143 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1144 {
1145         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1146 }
1147 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1148 {
1149         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1150 }
1151 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1152 {
1153         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1154 }
1155 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1156                       const char *oldname)
1157 {
1158         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1159 }
1160 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1161                    struct dentry *new_dentry)
1162 {
1163         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1164                                new_dentry);
1165 }
1166 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1167                      struct inode *new_dir, struct dentry *new_dentry)
1168 {
1169         int err;
1170         err = ll_rename_generic(old_dir, NULL,
1171                                  old_dentry, &old_dentry->d_name,
1172                                  new_dir, NULL, new_dentry,
1173                                  &new_dentry->d_name);
1174         if (!err) {
1175 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1176                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1177 #endif
1178                         d_move(old_dentry, new_dentry);
1179         }
1180         return err;
1181 }
1182
1183 struct inode_operations ll_dir_inode_operations = {
1184         .mknod              = ll_mknod,
1185         .lookup             = ll_lookup_nd,
1186         .create             = ll_create_nd,
1187         /* We need all these non-raw things for NFSD, to not patch it. */
1188         .unlink             = ll_unlink,
1189         .mkdir              = ll_mkdir,
1190         .rmdir              = ll_rmdir,
1191         .symlink            = ll_symlink,
1192         .link               = ll_link,
1193         .rename             = ll_rename,
1194         .setattr            = ll_setattr,
1195         .getattr            = ll_getattr,
1196         .permission         = ll_inode_permission,
1197         .setxattr           = ll_setxattr,
1198         .getxattr           = ll_getxattr,
1199         .listxattr          = ll_listxattr,
1200         .removexattr        = ll_removexattr,
1201 #ifdef HAVE_IOP_GET_ACL
1202         .get_acl            = ll_get_acl,
1203 #endif
1204 };
1205
1206 struct inode_operations ll_special_inode_operations = {
1207         .setattr        = ll_setattr,
1208         .getattr        = ll_getattr,
1209         .permission     = ll_inode_permission,
1210         .setxattr       = ll_setxattr,
1211         .getxattr       = ll_getxattr,
1212         .listxattr      = ll_listxattr,
1213         .removexattr    = ll_removexattr,
1214 #ifdef HAVE_IOP_GET_ACL
1215         .get_acl            = ll_get_acl,
1216 #endif
1217 };