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         struct ll_d_hlist_node *p;
 172
 173         ll_lock_dcache(dir);
 174         ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_alias) {
 175                 spin_lock(&dentry->d_lock);
 176                 if (!list_empty(&dentry->d_subdirs)) {
 177                         struct dentry *child;
 178
 179                         list_for_each_entry_safe(child, tmp_subdir,
 180                                                  &dentry->d_subdirs,
 181                                                  d_u.d_child) {
 182                                 if (child->d_inode == NULL)
 183                                         d_lustre_invalidate(child);
 184                         }
 185                 }
 186                 spin_unlock(&dentry->d_lock);
 187         }
 188         ll_unlock_dcache(dir);
 189 }
 190
 191 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 192                        void *data, int flag)
 193 {
 194         int rc;
 195         struct lustre_handle lockh;
 196         ENTRY;
 197
 198         switch (flag) {
 199         case LDLM_CB_BLOCKING:
 200                 ldlm_lock2handle(lock, &lockh);
 201                 rc = ldlm_cli_cancel(&lockh);
 202                 if (rc < 0) {
 203                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 204                         RETURN(rc);
 205                 }
 206                 break;
 207         case LDLM_CB_CANCELING: {
 208                 struct inode *inode = ll_inode_from_lock(lock);
 209                 struct ll_inode_info *lli;
 210                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 211                 struct lu_fid *fid;
 212                 ldlm_mode_t mode = lock->l_req_mode;
 213
 214                 /* Invalidate all dentries associated with this inode */
 215                 if (inode == NULL)
 216                         break;
 217
 218                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 219                 /* For OPEN locks we differentiate between lock modes
 220                  * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
 221                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
 222                             MDS_INODELOCK_LAYOUT))
 223                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
 224
 225                 if (bits & MDS_INODELOCK_OPEN)
 226                         ll_have_md_lock(inode, &bits, mode);
 227
 228                 fid = ll_inode2fid(inode);
 229                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 230                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 231                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 232                         LDLM_ERROR(lock, "data mismatch with object "
 233                                    DFID" (%p)", PFID(fid), inode);
 234                 }
 235
 236                 if (bits & MDS_INODELOCK_OPEN) {
 237                         int flags = 0;
 238                         switch (lock->l_req_mode) {
 239                         case LCK_CW:
 240                                 flags = FMODE_WRITE;
 241                                 break;
 242                         case LCK_PR:
 243                                 flags = FMODE_EXEC;
 244                                 break;
 245                         case LCK_CR:
 246                                 flags = FMODE_READ;
 247                                 break;
 248                         default:
 249                                 CERROR("Unexpected lock mode for OPEN lock "
 250                                        "%d, inode %ld\n", lock->l_req_mode,
 251                                        inode->i_ino);
 252                         }
 253                         ll_md_real_close(inode, flags);
 254                 }
 255
 256                 lli = ll_i2info(inode);
 257                 if (bits & MDS_INODELOCK_LAYOUT) {
 258                         struct cl_object_conf conf = { .coc_inode = inode,
 259                                                        .coc_invalidate = true };
 260                         rc = ll_layout_conf(inode, &conf);
 261                         if (rc)
 262                                 CDEBUG(D_INODE, "invaliding layout %d.\n", rc);
 263                 }
 264
 265                 if (bits & MDS_INODELOCK_UPDATE)
 266                         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 267
 268                 if (S_ISDIR(inode->i_mode) &&
 269                      (bits & MDS_INODELOCK_UPDATE)) {
 270                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 271                                inode->i_ino);
 272                         truncate_inode_pages(inode->i_mapping, 0);
 273                         ll_invalidate_negative_children(inode);
 274                 }
 275
 276                 if (inode->i_sb->s_root &&
 277                     inode != inode->i_sb->s_root->d_inode &&
 278                     (bits & MDS_INODELOCK_LOOKUP))
 279                         ll_invalidate_aliases(inode);
 280                 iput(inode);
 281                 break;
 282         }
 283         default:
 284                 LBUG();
 285         }
 286
 287         RETURN(0);
 288 }
 289
 290 __u32 ll_i2suppgid(struct inode *i)
 291 {
 292         if (cfs_curproc_is_in_groups(i->i_gid))
 293                 return (__u32)i->i_gid;
 294         else
 295                 return (__u32)(-1);
 296 }
 297
 298 /* Pack the required supplementary groups into the supplied groups array.
 299  * If we don't need to use the groups from the target inode(s) then we
 300  * instead pack one or more groups from the user's supplementary group
 301  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 302 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 303 {
 304 #if 0
 305         int i;
 306 #endif
 307
 308         LASSERT(i1 != NULL);
 309         LASSERT(suppgids != NULL);
 310
 311         suppgids[0] = ll_i2suppgid(i1);
 312
 313         if (i2)
 314                 suppgids[1] = ll_i2suppgid(i2);
 315                 else
 316                         suppgids[1] = -1;
 317
 318 #if 0
 319         for (i = 0; i < current_ngroups; i++) {
 320                 if (suppgids[0] == -1) {
 321                         if (current_groups[i] != suppgids[1])
 322                                 suppgids[0] = current_groups[i];
 323                         continue;
 324                 }
 325                 if (suppgids[1] == -1) {
 326                         if (current_groups[i] != suppgids[0])
 327                                 suppgids[1] = current_groups[i];
 328                         continue;
 329                 }
 330                 break;
 331         }
 332 #endif
 333 }
 334
 335 /*
 336  * try to reuse three types of dentry:
 337  * 1. unhashed alias, this one is unhashed by d_invalidate (but it may be valid
 338  *    by concurrent .revalidate).
 339  * 2. INVALID alias (common case for no valid ldlm lock held, but this flag may
 340  *    be cleared by others calling d_lustre_revalidate).
 341  * 3. DISCONNECTED alias.
 342  */
 343 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
 344 {
 345         struct dentry *alias, *discon_alias, *invalid_alias;
 346         struct ll_d_hlist_node *p;
 347
 348         if (ll_d_hlist_empty(&inode->i_dentry))
 349                 return NULL;
 350
 351         discon_alias = invalid_alias = NULL;
 352
 353         ll_lock_dcache(inode);
 354         ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
 355                 LASSERT(alias != dentry);
 356
 357                 spin_lock(&alias->d_lock);
 358                 if (alias->d_flags & DCACHE_DISCONNECTED)
 359                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
 360                         discon_alias = alias;
 361                 else if (alias->d_parent == dentry->d_parent             &&
 362                          alias->d_name.hash == dentry->d_name.hash       &&
 363                          alias->d_name.len == dentry->d_name.len         &&
 364                          memcmp(alias->d_name.name, dentry->d_name.name,
 365                                 dentry->d_name.len) == 0)
 366                         invalid_alias = alias;
 367                 spin_unlock(&alias->d_lock);
 368
 369                 if (invalid_alias)
 370                         break;
 371         }
 372         alias = invalid_alias ?: discon_alias ?: NULL;
 373         if (alias) {
 374                 spin_lock(&alias->d_lock);
 375                 dget_dlock(alias);
 376                 spin_unlock(&alias->d_lock);
 377         }
 378         ll_unlock_dcache(inode);
 379
 380         return alias;
 381 }
 382
 383 /*
 384  * Similar to d_splice_alias(), but lustre treats invalid alias
 385  * similar to DCACHE_DISCONNECTED, and tries to use it anyway.
 386  */
 387 struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de)
 388 {
 389         struct dentry *new;
 390
 391         if (inode) {
 392                 new = ll_find_alias(inode, de);
 393                 if (new) {
 394                         ll_dops_init(new, 1, 1);
 395                         d_move(new, de);
 396                         iput(inode);
 397                         CDEBUG(D_DENTRY,
 398                                "Reuse dentry %p inode %p refc %d flags %#x\n",
 399                               new, new->d_inode, d_refcount(new), new->d_flags);
 400                         return new;
 401                 }
 402         }
 403         ll_dops_init(de, 1, 1);
 404         __d_lustre_invalidate(de);
 405         d_add(de, inode);
 406         CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
 407                de, de->d_inode, d_refcount(de), de->d_flags);
 408         return de;
 409 }
 410
 411 int ll_lookup_it_finish(struct ptlrpc_request *request,
 412                         struct lookup_intent *it, void *data)
 413 {
 414         struct it_cb_data *icbd = data;
 415         struct dentry **de = icbd->icbd_childp;
 416         struct inode *parent = icbd->icbd_parent;
 417         struct inode *inode = NULL;
 418         __u64 bits = 0;
 419         int rc;
 420         ENTRY;
 421
 422         /* NB 1 request reference will be taken away by ll_intent_lock()
 423          * when I return */
 424         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 425                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 426                 if (rc)
 427                         RETURN(rc);
 428
 429                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
 430
 431                 /* We used to query real size from OSTs here, but actually
 432                    this is not needed. For stat() calls size would be updated
 433                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 434                    2.4 and
 435                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 436                    Everybody else who needs correct file size would call
 437                    ll_glimpse_size or some equivalent themselves anyway.
 438                    Also see bug 7198. */
 439         }
 440
 441         *de = ll_splice_alias(inode, *de);
 442
 443         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 444                 /* we have lookup look - unhide dentry */
 445                 if (bits & MDS_INODELOCK_LOOKUP)
 446                         d_lustre_revalidate(*de);
 447         } else {
 448                 /* Check that parent has UPDATE lock. */
 449                 struct lookup_intent parent_it = {
 450                                         .it_op = IT_GETATTR,
 451                                         .d.lustre.it_lock_handle = 0 };
 452
 453                 if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
 454                                        &ll_i2info(parent)->lli_fid, NULL)) {
 455                         d_lustre_revalidate(*de);
 456                         ll_intent_release(&parent_it);
 457                 }
 458         }
 459
 460         RETURN(0);
 461 }
 462
 463 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 464                                    struct lookup_intent *it, int lookup_flags)
 465 {
 466         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 467         struct dentry *save = dentry, *retval;
 468         struct ptlrpc_request *req = NULL;
 469         struct md_op_data *op_data;
 470         struct it_cb_data icbd;
 471         __u32 opc;
 472         int rc;
 473         ENTRY;
 474
 475         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 476                 RETURN(ERR_PTR(-ENAMETOOLONG));
 477
 478         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 479                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 480                parent->i_generation, parent, LL_IT2STR(it));
 481
 482         if (d_mountpoint(dentry))
 483                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 484
 485         ll_frob_intent(&it, &lookup_it);
 486
 487         /* As do_lookup is called before follow_mount, root dentry may be left
 488          * not valid, revalidate it here. */
 489         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 490             (it->it_op & (IT_OPEN | IT_CREAT))) {
 491                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
 492                                             MDS_INODELOCK_LOOKUP);
 493                 if (rc)
 494                         RETURN(ERR_PTR(rc));
 495         }
 496
 497         if (it->it_op == IT_GETATTR) {
 498                 rc = ll_statahead_enter(parent, &dentry, 0);
 499                 if (rc == 1) {
 500                         if (dentry == save)
 501                                 GOTO(out, retval = NULL);
 502                         GOTO(out, retval = dentry);
 503                 }
 504         }
 505
 506         icbd.icbd_childp = &dentry;
 507         icbd.icbd_parent = parent;
 508
 509         if (it->it_op & IT_CREAT ||
 510             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 511                 opc = LUSTRE_OPC_CREATE;
 512         else
 513                 opc = LUSTRE_OPC_ANY;
 514
 515         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 516                                      dentry->d_name.len, lookup_flags, opc,
 517                                      NULL);
 518         if (IS_ERR(op_data))
 519                 RETURN((void *)op_data);
 520
 521         /* enforce umask if acl disabled or MDS doesn't support umask */
 522         if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
 523                 it->it_create_mode &= ~cfs_curproc_umask();
 524
 525         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 526                             lookup_flags, &req, ll_md_blocking_ast, 0);
 527         ll_finish_md_op_data(op_data);
 528         if (rc < 0)
 529                 GOTO(out, retval = ERR_PTR(rc));
 530
 531         rc = ll_lookup_it_finish(req, it, &icbd);
 532         if (rc != 0) {
 533                 ll_intent_release(it);
 534                 GOTO(out, retval = ERR_PTR(rc));
 535         }
 536
 537         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 538             !S_ISREG(dentry->d_inode->i_mode) &&
 539             !S_ISDIR(dentry->d_inode->i_mode)) {
 540                 ll_release_openhandle(dentry, it);
 541         }
 542         ll_lookup_finish_locks(it, dentry);
 543
 544         if (dentry == save)
 545                 GOTO(out, retval = NULL);
 546         else
 547                 GOTO(out, retval = dentry);
 548  out:
 549         if (req)
 550                 ptlrpc_req_finished(req);
 551         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
 552                 ll_statahead_mark(parent, dentry);
 553         return retval;
 554 }
 555
 556 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 557                                         int lookup_flags)
 558 {
 559         struct lookup_intent *it;
 560
 561         OBD_ALLOC(it, sizeof(*it));
 562         if (!it)
 563                 return ERR_PTR(-ENOMEM);
 564
 565         if (lookup_flags & LOOKUP_OPEN) {
 566                 it->it_op = IT_OPEN;
 567                 if (lookup_flags & LOOKUP_CREATE)
 568                         it->it_op |= IT_CREAT;
 569                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
 570                 it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags);
 571         } else {
 572                 it->it_op = IT_GETATTR;
 573         }
 574
 575         return it;
 576 }
 577
 578 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 579                                    struct nameidata *nd)
 580 {
 581         struct dentry *de;
 582         ENTRY;
 583
 584         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 585                 struct lookup_intent *it;
 586
 587                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 588                         it = ll_d2d(dentry)->lld_it;
 589                         ll_d2d(dentry)->lld_it = NULL;
 590                 } else {
 591                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 592                                 /* We are sure this is new dentry, so we need to create
 593                                    our private data and set the dentry ops */
 594                                 ll_dops_init(dentry, 1, 1);
 595                                 __d_lustre_invalidate(dentry);
 596                                 d_add(dentry, NULL);
 597                                 RETURN(NULL);
 598                         }
 599                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 600                         if (IS_ERR(it))
 601                                 RETURN((struct dentry *)it);
 602                 }
 603
 604                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 605                 if (de)
 606                         dentry = de;
 607                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 608                         if (dentry->d_inode &&
 609                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 610                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 611                                         // We cannot call open here as it would
 612                                         // deadlock.
 613                                         ptlrpc_req_finished(
 614                                                        (struct ptlrpc_request *)
 615                                                           it->d.lustre.it_data);
 616                                 } else {
 617                                         struct file *filp;
 618
 619                                         nd->intent.open.file->private_data = it;
 620                                         filp = lookup_instantiate_filp(nd,
 621                                                                        dentry,
 622                                                                        NULL);
 623                                         if (IS_ERR(filp)) {
 624                                                 if (de)
 625                                                         dput(de);
 626                                                 de = (struct dentry *)filp;
 627                                         }
 628                                 }
 629                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 630                                 // XXX This can only reliably work on assumption
 631                                 // that there are NO hashed negative dentries.
 632                                 ll_d2d(dentry)->lld_it = it;
 633                                 it = NULL; /* Will be freed in ll_create_nd */
 634                                 /* We absolutely depend on ll_create_nd to be
 635                                  * called to not leak this intent and possible
 636                                  * data attached to it */
 637                         }
 638                 }
 639
 640                 if (it) {
 641                         ll_intent_release(it);
 642                         OBD_FREE(it, sizeof(*it));
 643                 }
 644         } else {
 645                 de = ll_lookup_it(parent, dentry, NULL, 0);
 646         }
 647
 648         RETURN(de);
 649 }
 650
 651 /* We depend on "mode" being set with the proper file type/umask by now */
 652 static struct inode *ll_create_node(struct inode *dir, const char *name,
 653                                     int namelen, const void *data, int datalen,
 654                                     int mode, __u64 extra,
 655                                     struct lookup_intent *it)
 656 {
 657         struct inode *inode = NULL;
 658         struct ptlrpc_request *request = NULL;
 659         struct ll_sb_info *sbi = ll_i2sbi(dir);
 660         int rc;
 661         ENTRY;
 662
 663         LASSERT(it && it->d.lustre.it_disposition);
 664
 665         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 666         request = it->d.lustre.it_data;
 667         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 668         rc = ll_prep_inode(&inode, request, dir->i_sb);
 669         if (rc)
 670                 GOTO(out, inode = ERR_PTR(rc));
 671
 672         LASSERT(ll_d_hlist_empty(&inode->i_dentry));
 673
 674         /* We asked for a lock on the directory, but were granted a
 675          * lock on the inode.  Since we finally have an inode pointer,
 676          * stuff it in the lock. */
 677         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 678                inode, inode->i_ino, inode->i_generation);
 679         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
 680         EXIT;
 681  out:
 682         ptlrpc_req_finished(request);
 683         return inode;
 684 }
 685
 686 /*
 687  * By the time this is called, we already have created the directory cache
 688  * entry for the new file, but it is so far negative - it has no inode.
 689  *
 690  * We defer creating the OBD object(s) until open, to keep the intent and
 691  * non-intent code paths similar, and also because we do not have the MDS
 692  * inode number before calling ll_create_node() (which is needed for LOV),
 693  * so we would need to do yet another RPC to the MDS to store the LOV EA
 694  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 695  * lmm_size in datalen (the MDS still has code which will handle that).
 696  *
 697  * If the create succeeds, we fill in the inode information
 698  * with d_instantiate().
 699  */
 700 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 701                         struct lookup_intent *it)
 702 {
 703         struct inode *inode;
 704         int rc = 0;
 705         ENTRY;
 706
 707         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 708                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 709                dir->i_generation, dir, LL_IT2STR(it));
 710
 711         rc = it_open_error(DISP_OPEN_CREATE, it);
 712         if (rc)
 713                 RETURN(rc);
 714
 715         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 716                                NULL, 0, mode, 0, it);
 717         if (IS_ERR(inode))
 718                 RETURN(PTR_ERR(inode));
 719
 720         d_instantiate(dentry, inode);
 721         RETURN(0);
 722 }
 723
 724 static void ll_update_times(struct ptlrpc_request *request,
 725                             struct inode *inode)
 726 {
 727         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 728                                                        &RMF_MDT_BODY);
 729
 730         LASSERT(body);
 731         if (body->valid & OBD_MD_FLMTIME &&
 732             body->mtime > LTIME_S(inode->i_mtime)) {
 733                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 734                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 735                 LTIME_S(inode->i_mtime) = body->mtime;
 736         }
 737         if (body->valid & OBD_MD_FLCTIME &&
 738             body->ctime > LTIME_S(inode->i_ctime))
 739                 LTIME_S(inode->i_ctime) = body->ctime;
 740 }
 741
 742 static int ll_new_node(struct inode *dir, struct qstr *name,
 743                        const char *tgt, int mode, int rdev,
 744                        struct dentry *dchild, __u32 opc)
 745 {
 746         struct ptlrpc_request *request = NULL;
 747         struct md_op_data *op_data;
 748         struct inode *inode = NULL;
 749         struct ll_sb_info *sbi = ll_i2sbi(dir);
 750         int tgt_len = 0;
 751         int err;
 752
 753         ENTRY;
 754         if (unlikely(tgt != NULL))
 755                 tgt_len = strlen(tgt) + 1;
 756
 757         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 758                                      name->len, 0, opc, NULL);
 759         if (IS_ERR(op_data))
 760                 GOTO(err_exit, err = PTR_ERR(op_data));
 761
 762         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 763                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 764                         cfs_curproc_cap_pack(), rdev, &request);
 765         ll_finish_md_op_data(op_data);
 766         if (err)
 767                 GOTO(err_exit, err);
 768
 769         ll_update_times(request, dir);
 770
 771         if (dchild) {
 772                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 773                 if (err)
 774                      GOTO(err_exit, err);
 775
 776                 d_instantiate(dchild, inode);
 777         }
 778         EXIT;
 779 err_exit:
 780         ptlrpc_req_finished(request);
 781
 782         return err;
 783 }
 784
 785 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 786                             unsigned rdev, struct dentry *dchild)
 787 {
 788         int err;
 789         ENTRY;
 790
 791         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 792                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 793                mode, rdev);
 794
 795         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
 796                 mode &= ~cfs_curproc_umask();
 797
 798         switch (mode & S_IFMT) {
 799         case 0:
 800                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 801         case S_IFREG:
 802         case S_IFCHR:
 803         case S_IFBLK:
 804         case S_IFIFO:
 805         case S_IFSOCK:
 806                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 807                                   LUSTRE_OPC_MKNOD);
 808                 break;
 809         case S_IFDIR:
 810                 err = -EPERM;
 811                 break;
 812         default:
 813                 err = -EINVAL;
 814         }
 815
 816         if (!err)
 817                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKNOD, 1);
 818
 819         RETURN(err);
 820 }
 821
 822 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 823                         ll_umode_t mode, struct nameidata *nd)
 824 {
 825         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 826         int rc;
 827
 828         if (!it)
 829                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 830
 831         ll_d2d(dentry)->lld_it = NULL;
 832
 833         /* Was there an error? Propagate it! */
 834         if (it->d.lustre.it_status) {
 835                 rc = it->d.lustre.it_status;
 836                 goto out;
 837         }
 838
 839         rc = ll_create_it(dir, dentry, mode, it);
 840         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 841                 struct file *filp;
 842
 843                 nd->intent.open.file->private_data = it;
 844                 filp = lookup_instantiate_filp(nd, dentry, NULL);
 845                 if (IS_ERR(filp))
 846                         rc = PTR_ERR(filp);
 847         }
 848
 849 out:
 850         ll_intent_release(it);
 851         OBD_FREE(it, sizeof(*it));
 852
 853         if (!rc)
 854                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
 855
 856         return rc;
 857 }
 858
 859 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 860                               const char *tgt, struct dentry *dchild)
 861 {
 862         int err;
 863         ENTRY;
 864
 865         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 866                name->len, name->name, dir->i_ino, dir->i_generation,
 867                dir, 3000, tgt);
 868
 869         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 870                           0, dchild, LUSTRE_OPC_SYMLINK);
 871
 872         if (!err)
 873                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
 874
 875         RETURN(err);
 876 }
 877
 878 static int ll_link_generic(struct inode *src,  struct inode *dir,
 879                            struct qstr *name, struct dentry *dchild)
 880 {
 881         struct ll_sb_info *sbi = ll_i2sbi(dir);
 882         struct ptlrpc_request *request = NULL;
 883         struct md_op_data *op_data;
 884         int err;
 885
 886         ENTRY;
 887         CDEBUG(D_VFSTRACE,
 888                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 889                src->i_ino, src->i_generation, src, dir->i_ino,
 890                dir->i_generation, dir, name->len, name->name);
 891
 892         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 893                                      0, LUSTRE_OPC_ANY, NULL);
 894         if (IS_ERR(op_data))
 895                 RETURN(PTR_ERR(op_data));
 896
 897         err = md_link(sbi->ll_md_exp, op_data, &request);
 898         ll_finish_md_op_data(op_data);
 899         if (err)
 900                 GOTO(out, err);
 901
 902         ll_update_times(request, dir);
 903         ll_stats_ops_tally(sbi, LPROC_LL_LINK, 1);
 904         EXIT;
 905 out:
 906         ptlrpc_req_finished(request);
 907         RETURN(err);
 908 }
 909
 910 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 911                             int mode, struct dentry *dchild)
 912
 913 {
 914         int err;
 915         ENTRY;
 916
 917         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 918                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 919
 920         if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
 921                 mode &= ~cfs_curproc_umask();
 922         mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
 923         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 924
 925         if (!err)
 926                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
 927
 928         RETURN(err);
 929 }
 930
 931 /* Try to find the child dentry by its name.
 932    If found, put the result fid into @fid. */
 933 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
 934                              struct lu_fid *fid)
 935 {
 936         struct dentry *parent, *child;
 937
 938         parent = ll_d_hlist_entry(dir->i_dentry, struct dentry, d_alias);
 939         child = d_lookup(parent, name);
 940         if (child) {
 941                 if (child->d_inode)
 942                         *fid = *ll_inode2fid(child->d_inode);
 943                 dput(child);
 944         }
 945 }
 946
 947 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
 948                             struct dentry *dchild, struct qstr *name)
 949 {
 950         struct ptlrpc_request *request = NULL;
 951         struct md_op_data *op_data;
 952         int rc;
 953         ENTRY;
 954
 955         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 956                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 957
 958         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
 959                 RETURN(-EBUSY);
 960
 961         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
 962                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
 963         if (IS_ERR(op_data))
 964                 RETURN(PTR_ERR(op_data));
 965
 966         ll_get_child_fid(dir, name, &op_data->op_fid3);
 967         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
 968         ll_finish_md_op_data(op_data);
 969         if (rc == 0) {
 970                 ll_update_times(request, dir);
 971                 ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_RMDIR, 1);
 972         }
 973
 974         ptlrpc_req_finished(request);
 975         RETURN(rc);
 976 }
 977
 978 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
 979 {
 980         struct mdt_body *body;
 981         struct lov_mds_md *eadata;
 982         struct lov_stripe_md *lsm = NULL;
 983         struct obd_trans_info oti = { 0 };
 984         struct obdo *oa;
 985         struct obd_capa *oc = NULL;
 986         int rc;
 987         ENTRY;
 988
 989         /* req is swabbed so this is safe */
 990         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
 991         if (!(body->valid & OBD_MD_FLEASIZE))
 992                 RETURN(0);
 993
 994         if (body->eadatasize == 0) {
 995                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
 996                 GOTO(out, rc = -EPROTO);
 997         }
 998
 999         /* The MDS sent back the EA because we unlinked the last reference
1000          * to this file. Use this EA to unlink the objects on the OST.
1001          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1002          * check it is complete and sensible. */
1003         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1004                                               body->eadatasize);
1005         LASSERT(eadata != NULL);
1006
1007         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1008         if (rc < 0) {
1009                 CERROR("obd_unpackmd: %d\n", rc);
1010                 GOTO(out, rc);
1011         }
1012         LASSERT(rc >= sizeof(*lsm));
1013
1014         OBDO_ALLOC(oa);
1015         if (oa == NULL)
1016                 GOTO(out_free_memmd, rc = -ENOMEM);
1017
1018         oa->o_id = lsm->lsm_object_id;
1019         oa->o_seq = lsm->lsm_object_seq;
1020         oa->o_mode = body->mode & S_IFMT;
1021         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1022
1023         if (body->valid & OBD_MD_FLCOOKIE) {
1024                 oa->o_valid |= OBD_MD_FLCOOKIE;
1025                 oti.oti_logcookies =
1026                         req_capsule_server_sized_get(&request->rq_pill,
1027                                                      &RMF_LOGCOOKIES,
1028                                                    sizeof(struct llog_cookie) *
1029                                                      lsm->lsm_stripe_count);
1030                 if (oti.oti_logcookies == NULL) {
1031                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1032                         body->valid &= ~OBD_MD_FLCOOKIE;
1033                 }
1034         }
1035
1036         if (body->valid & OBD_MD_FLOSSCAPA) {
1037                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1038                 if (rc)
1039                         GOTO(out_free_memmd, rc);
1040         }
1041
1042         rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
1043                          ll_i2mdexp(dir), oc);
1044         capa_put(oc);
1045         OBDO_FREE(oa);
1046         if (rc)
1047                 CERROR("obd destroy objid "LPX64" error %d\n",
1048                        lsm->lsm_object_id, rc);
1049  out_free_memmd:
1050         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1051  out:
1052         return rc;
1053 }
1054
1055 /* ll_unlink_generic() doesn't update the inode with the new link count.
1056  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1057  * is any lock existing. They will recycle dentries and inodes based upon locks
1058  * too. b=20433 */
1059 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1060                              struct dentry *dchild, struct qstr *name)
1061 {
1062         struct ptlrpc_request *request = NULL;
1063         struct md_op_data *op_data;
1064         int rc;
1065         ENTRY;
1066         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1067                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1068
1069         /*
1070          * XXX: unlink bind mountpoint maybe call to here,
1071          * just check it as vfs_unlink does.
1072          */
1073         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1074                 RETURN(-EBUSY);
1075
1076         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1077                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1078         if (IS_ERR(op_data))
1079                 RETURN(PTR_ERR(op_data));
1080
1081         ll_get_child_fid(dir, name, &op_data->op_fid3);
1082         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1083         ll_finish_md_op_data(op_data);
1084         if (rc)
1085                 GOTO(out, rc);
1086
1087         ll_update_times(request, dir);
1088         ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
1089
1090         rc = ll_objects_destroy(request, dir);
1091  out:
1092         ptlrpc_req_finished(request);
1093         RETURN(rc);
1094 }
1095
1096 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1097                              struct dentry *src_dchild, struct qstr *src_name,
1098                              struct inode *tgt, struct dentry *tgt_dparent,
1099                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1100 {
1101         struct ptlrpc_request *request = NULL;
1102         struct ll_sb_info *sbi = ll_i2sbi(src);
1103         struct md_op_data *op_data;
1104         int err;
1105         ENTRY;
1106         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1107                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1108                src->i_ino, src->i_generation, src, tgt_name->len,
1109                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1110
1111         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1112             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1113                 RETURN(-EBUSY);
1114
1115         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1116                                      LUSTRE_OPC_ANY, NULL);
1117         if (IS_ERR(op_data))
1118                 RETURN(PTR_ERR(op_data));
1119
1120         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1121         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1122         err = md_rename(sbi->ll_md_exp, op_data,
1123                         src_name->name, src_name->len,
1124                         tgt_name->name, tgt_name->len, &request);
1125         ll_finish_md_op_data(op_data);
1126         if (!err) {
1127                 ll_update_times(request, src);
1128                 ll_update_times(request, tgt);
1129                 ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
1130                 err = ll_objects_destroy(request, src);
1131         }
1132
1133         ptlrpc_req_finished(request);
1134
1135         RETURN(err);
1136 }
1137
1138 static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
1139                     dev_t rdev)
1140 {
1141         return ll_mknod_generic(dir, &dchild->d_name, mode,
1142                                 old_encode_dev(rdev), dchild);
1143 }
1144
1145 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1146 {
1147         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1148 }
1149
1150 static int ll_mkdir(struct inode *dir, struct dentry *dentry, ll_umode_t mode)
1151 {
1152         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1153 }
1154
1155 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1156 {
1157         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1158 }
1159
1160 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1161                       const char *oldname)
1162 {
1163         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1164 }
1165
1166 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1167                    struct dentry *new_dentry)
1168 {
1169         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1170                                new_dentry);
1171 }
1172
1173 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1174                      struct inode *new_dir, struct dentry *new_dentry)
1175 {
1176         int err;
1177         err = ll_rename_generic(old_dir, NULL,
1178                                  old_dentry, &old_dentry->d_name,
1179                                  new_dir, NULL, new_dentry,
1180                                  &new_dentry->d_name);
1181         if (!err) {
1182 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1183                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1184 #endif
1185                         d_move(old_dentry, new_dentry);
1186         }
1187         return err;
1188 }
1189
1190 struct inode_operations ll_dir_inode_operations = {
1191         .mknod              = ll_mknod,
1192         .lookup             = ll_lookup_nd,
1193         .create             = ll_create_nd,
1194         /* We need all these non-raw things for NFSD, to not patch it. */
1195         .unlink             = ll_unlink,
1196         .mkdir              = ll_mkdir,
1197         .rmdir              = ll_rmdir,
1198         .symlink            = ll_symlink,
1199         .link               = ll_link,
1200         .rename             = ll_rename,
1201         .setattr            = ll_setattr,
1202         .getattr            = ll_getattr,
1203         .permission         = ll_inode_permission,
1204         .setxattr           = ll_setxattr,
1205         .getxattr           = ll_getxattr,
1206         .listxattr          = ll_listxattr,
1207         .removexattr        = ll_removexattr,
1208 #ifdef HAVE_IOP_GET_ACL
1209         .get_acl            = ll_get_acl,
1210 #endif
1211 };
1212
1213 struct inode_operations ll_special_inode_operations = {
1214         .setattr        = ll_setattr,
1215         .getattr        = ll_getattr,
1216         .permission     = ll_inode_permission,
1217         .setxattr       = ll_setxattr,
1218         .getxattr       = ll_getxattr,
1219         .listxattr      = ll_listxattr,
1220         .removexattr    = ll_removexattr,
1221 #ifdef HAVE_IOP_GET_ACL
1222         .get_acl            = ll_get_acl,
1223 #endif
1224 };