lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011 Whamcloud, Inc.
  33  *
  34  */
  35 /*
  36  * This file is part of Lustre, http://www.lustre.org/
  37  * Lustre is a trademark of Sun Microsystems, Inc.
  38  */
  39
  40 #include <linux/fs.h>
  41 #include <linux/sched.h>
  42 #include <linux/mm.h>
  43 #include <linux/smp_lock.h>
  44 #include <linux/quotaops.h>
  45 #include <linux/highmem.h>
  46 #include <linux/pagemap.h>
  47 #include <linux/security.h>
  48
  49 #define DEBUG_SUBSYSTEM S_LLITE
  50
  51 #include <obd_support.h>
  52 #include <lustre_fid.h>
  53 #include <lustre_lite.h>
  54 #include <lustre_dlm.h>
  55 #include <lustre_ver.h>
  56 #include "llite_internal.h"
  57
  58 /*
  59  * Check if we have something mounted at the named dchild.
  60  * In such a case there would always be dentry present.
  61  */
  62 static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
  63                            struct qstr *name)
  64 {
  65         int mounted = 0;
  66
  67         if (unlikely(dchild)) {
  68                 mounted = d_mountpoint(dchild);
  69         } else if (dparent) {
  70                 dchild = d_lookup(dparent, name);
  71                 if (dchild) {
  72                         mounted = d_mountpoint(dchild);
  73                         dput(dchild);
  74                 }
  75         }
  76         return mounted;
  77 }
  78
  79 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  80 {
  81         ENTRY;
  82
  83         ldlm_lock_decref(lockh, mode);
  84
  85         RETURN(0);
  86 }
  87
  88
  89 /* called from iget5_locked->find_inode() under inode_lock spinlock */
  90 static int ll_test_inode(struct inode *inode, void *opaque)
  91 {
  92         struct ll_inode_info *lli = ll_i2info(inode);
  93         struct lustre_md     *md = opaque;
  94
  95         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
  96                 CERROR("MDS body missing FID\n");
  97                 return 0;
  98         }
  99
 100         if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
 101                 return 0;
 102
 103         return 1;
 104 }
 105
 106 static int ll_set_inode(struct inode *inode, void *opaque)
 107 {
 108         struct ll_inode_info *lli = ll_i2info(inode);
 109         struct mdt_body *body = ((struct lustre_md *)opaque)->body;
 110
 111         if (unlikely(!(body->valid & OBD_MD_FLID))) {
 112                 CERROR("MDS body missing FID\n");
 113                 return -EINVAL;
 114         }
 115
 116         lli->lli_fid = body->fid1;
 117         if (unlikely(!(body->valid & OBD_MD_FLTYPE))) {
 118                 CERROR("Can not initialize inode "DFID" without object type: "
 119                        "valid = "LPX64"\n", PFID(&lli->lli_fid), body->valid);
 120                 return -EINVAL;
 121         }
 122
 123         inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mode & S_IFMT);
 124         if (unlikely(inode->i_mode == 0)) {
 125                 CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
 126                 return -EINVAL;
 127         }
 128
 129         ll_lli_init(lli);
 130
 131         return 0;
 132 }
 133
 134
 135 /*
 136  * Get an inode by inode number (already instantiated by the intent lookup).
 137  * Returns inode or NULL
 138  */
 139 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 140                       struct lustre_md *md)
 141 {
 142         struct inode         *inode;
 143         ENTRY;
 144
 145         LASSERT(hash != 0);
 146         inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
 147
 148         if (inode) {
 149                 if (inode->i_state & I_NEW) {
 150                         int rc = 0;
 151
 152                         ll_read_inode2(inode, md);
 153                         if (S_ISREG(inode->i_mode) &&
 154                             ll_i2info(inode)->lli_clob == NULL)
 155                                 rc = cl_file_inode_init(inode, md);
 156                         if (rc != 0) {
 157                                 md->lsm = NULL;
 158                                 make_bad_inode(inode);
 159                                 unlock_new_inode(inode);
 160                                 iput(inode);
 161                                 inode = ERR_PTR(rc);
 162                         } else
 163                                 unlock_new_inode(inode);
 164                 } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 165                         ll_update_inode(inode, md);
 166                 CDEBUG(D_VFSTRACE, "got inode: %p for "DFID"\n",
 167                        inode, PFID(&md->body->fid1));
 168         }
 169         RETURN(inode);
 170 }
 171
 172 static void ll_drop_negative_dentry(struct inode *dir)
 173 {
 174         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 175
 176         cfs_spin_lock(&ll_lookup_lock);
 177         spin_lock(&dcache_lock);
 178 restart:
 179         list_for_each_entry_safe(dentry, tmp_alias,
 180                                  &dir->i_dentry,d_alias) {
 181                 if (!list_empty(&dentry->d_subdirs)) {
 182                         struct dentry *child;
 183                         list_for_each_entry_safe(child, tmp_subdir,
 184                                                  &dentry->d_subdirs,
 185                                                  d_child) {
 186                                 /* XXX Print some debug here? */
 187                                 if (!child->d_inode)
 188                                 /* Negative dentry. If we were
 189                                    dropping dcache lock, go
 190                                    throught the list again */
 191                                         if (ll_drop_dentry(child))
 192                                                 goto restart;
 193                         }
 194                 }
 195         }
 196         spin_unlock(&dcache_lock);
 197         cfs_spin_unlock(&ll_lookup_lock);
 198 }
 199
 200
 201 int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 202                        void *data, int flag)
 203 {
 204         int rc;
 205         struct lustre_handle lockh;
 206         ENTRY;
 207
 208         switch (flag) {
 209         case LDLM_CB_BLOCKING:
 210                 ldlm_lock2handle(lock, &lockh);
 211                 rc = ldlm_cli_cancel(&lockh);
 212                 if (rc < 0) {
 213                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 214                         RETURN(rc);
 215                 }
 216                 break;
 217         case LDLM_CB_CANCELING: {
 218                 struct inode *inode = ll_inode_from_lock(lock);
 219                 struct ll_inode_info *lli;
 220                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 221                 struct lu_fid *fid;
 222                 ldlm_mode_t mode = lock->l_req_mode;
 223
 224                 /* Invalidate all dentries associated with this inode */
 225                 if (inode == NULL)
 226                         break;
 227
 228                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 229                 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
 230                 if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE))
 231                         ll_have_md_lock(inode, &bits, LCK_MINMODE);
 232
 233                 if (bits & MDS_INODELOCK_OPEN)
 234                         ll_have_md_lock(inode, &bits, mode);
 235
 236                 fid = ll_inode2fid(inode);
 237                 if (lock->l_resource->lr_name.name[0] != fid_seq(fid) ||
 238                     lock->l_resource->lr_name.name[1] != fid_oid(fid) ||
 239                     lock->l_resource->lr_name.name[2] != fid_ver(fid)) {
 240                         LDLM_ERROR(lock, "data mismatch with object "
 241                                    DFID" (%p)", PFID(fid), inode);
 242                 }
 243
 244                 if (bits & MDS_INODELOCK_OPEN) {
 245                         int flags = 0;
 246                         switch (lock->l_req_mode) {
 247                         case LCK_CW:
 248                                 flags = FMODE_WRITE;
 249                                 break;
 250                         case LCK_PR:
 251                                 flags = FMODE_EXEC;
 252                                 break;
 253                         case LCK_CR:
 254                                 flags = FMODE_READ;
 255                                 break;
 256                         default:
 257                                 CERROR("Unexpected lock mode for OPEN lock "
 258                                        "%d, inode %ld\n", lock->l_req_mode,
 259                                        inode->i_ino);
 260                         }
 261                         ll_md_real_close(inode, flags);
 262                 }
 263
 264                 lli = ll_i2info(inode);
 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_drop_negative_dentry(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_unhash_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 static void ll_d_add(struct dentry *de, struct inode *inode)
 336 {
 337         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 338         /* d_instantiate */
 339         if (!list_empty(&de->d_alias)) {
 340                 spin_unlock(&dcache_lock);
 341                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 342                        de->d_name.len, de->d_name.name, de,
 343                        de->d_alias.next, de->d_alias.prev);
 344                 LBUG();
 345         }
 346         if (inode)
 347                 list_add(&de->d_alias, &inode->i_dentry);
 348         de->d_inode = inode;
 349         /* d_instantiate() replacement code should initialize security
 350          * context. */
 351         security_d_instantiate(de, inode);
 352
 353         /* d_rehash */
 354         if (!d_unhashed(de)) {
 355                 spin_unlock(&dcache_lock);
 356                 CERROR("dentry %.*s %p hash next %p\n",
 357                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 358                 LBUG();
 359         }
 360         d_rehash_cond(de, 0);
 361 }
 362
 363 /* Search "inode"'s alias list for a dentry that has the same name and parent
 364  * as de.  If found, return it.  If not found, return de.
 365  * Lustre can't use d_add_unique because don't unhash aliases for directory
 366  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 367  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 368  */
 369 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 370 {
 371         struct list_head *tmp;
 372         struct dentry *dentry;
 373         struct dentry *last_discon = NULL;
 374
 375         cfs_spin_lock(&ll_lookup_lock);
 376         spin_lock(&dcache_lock);
 377         list_for_each(tmp, &inode->i_dentry) {
 378                 dentry = list_entry(tmp, struct dentry, d_alias);
 379
 380                 /* We are called here with 'de' already on the aliases list. */
 381                 if (unlikely(dentry == de)) {
 382                         CERROR("whoops\n");
 383                         continue;
 384                 }
 385
 386                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 387                         /* LASSERT(last_discon == NULL); LU-405, bz 20055 */
 388                         last_discon = dentry;
 389                         continue;
 390                 }
 391
 392                 if (dentry->d_parent != de->d_parent)
 393                         continue;
 394
 395                 if (dentry->d_name.hash != de->d_name.hash)
 396                         continue;
 397
 398                 if (dentry->d_name.len != de->d_name.len)
 399                         continue;
 400
 401                 if (memcmp(dentry->d_name.name, de->d_name.name,
 402                            de->d_name.len) != 0)
 403                         continue;
 404
 405                 dget_locked(dentry);
 406                 ll_dops_init(dentry, 0, 1);
 407                 ll_dentry_rehash(dentry, 1);
 408                 spin_unlock(&dcache_lock);
 409                 cfs_spin_unlock(&ll_lookup_lock);
 410                 iput(inode);
 411                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 412                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 413                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 414                 return dentry;
 415         }
 416
 417         if (last_discon) {
 418                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 419                         "refc %d\n", last_discon, last_discon->d_inode,
 420                         atomic_read(&last_discon->d_count));
 421                 dget_locked(last_discon);
 422                 lock_dentry(last_discon);
 423                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 424                 unlock_dentry(last_discon);
 425                 spin_unlock(&dcache_lock);
 426                 cfs_spin_unlock(&ll_lookup_lock);
 427                 ll_dops_init(last_discon, 1, 1);
 428                 d_rehash(de);
 429                 d_move(last_discon, de);
 430                 iput(inode);
 431                 return last_discon;
 432         }
 433         lock_dentry(de);
 434         de->d_flags |= DCACHE_LUSTRE_INVALID;
 435         unlock_dentry(de);
 436         ll_d_add(de, inode);
 437
 438         spin_unlock(&dcache_lock);
 439         cfs_spin_unlock(&ll_lookup_lock);
 440
 441         return de;
 442 }
 443
 444 int ll_lookup_it_finish(struct ptlrpc_request *request,
 445                         struct lookup_intent *it, void *data)
 446 {
 447         struct it_cb_data *icbd = data;
 448         struct dentry **de = icbd->icbd_childp;
 449         struct inode *parent = icbd->icbd_parent;
 450         struct inode *inode = NULL;
 451         int rc;
 452         ENTRY;
 453
 454         /* NB 1 request reference will be taken away by ll_intent_lock()
 455          * when I return */
 456         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 457                 struct dentry *save = *de;
 458                 __u64 bits = 0;
 459
 460                 rc = ll_prep_inode(&inode, request, (*de)->d_sb);
 461                 if (rc)
 462                         RETURN(rc);
 463
 464                 ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
 465
 466                 /* We used to query real size from OSTs here, but actually
 467                    this is not needed. For stat() calls size would be updated
 468                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 469                    2.4 and
 470                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 471                    Everybody else who needs correct file size would call
 472                    cl_glimpse_size or some equivalent themselves anyway.
 473                    Also see bug 7198. */
 474                 ll_dops_init(*de, 1, 1);
 475                 *de = ll_find_alias(inode, *de);
 476                 if (*de != save) {
 477                         struct ll_dentry_data *lld = ll_d2d(*de);
 478
 479                         /* just make sure the ll_dentry_data is ready */
 480                         if (unlikely(lld == NULL))
 481                                 ll_dops_init(*de, 1, 1);
 482                 }
 483                 /* we have lookup look - unhide dentry */
 484                 ll_dentry_reset_flags(*de, bits);
 485         } else {
 486                 __u64 ibits;
 487
 488                 ll_dops_init(*de, 1, 1);
 489                 /* Check that parent has UPDATE lock. If there is none, we
 490                    cannot afford to hash this dentry (done by ll_d_add) as it
 491                    might get picked up later when UPDATE lock will appear */
 492                 ibits = MDS_INODELOCK_UPDATE;
 493                 if (ll_have_md_lock(parent, &ibits, LCK_MINMODE)) {
 494                         spin_lock(&dcache_lock);
 495                         ll_d_add(*de, NULL);
 496                         spin_unlock(&dcache_lock);
 497                 } else {
 498                         /* negative lookup - and don't have update lock to
 499                          * parent */
 500                         lock_dentry(*de);
 501                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 502                         unlock_dentry(*de);
 503
 504                         (*de)->d_inode = NULL;
 505                         /* We do not want to hash the dentry if don`t have a
 506                          * lock, but if this dentry is later used in d_move,
 507                          * we'd hit uninitialised list head d_hash, so we just
 508                          * do this to init d_hash field but leave dentry
 509                          * unhashed. (bug 10796). */
 510                         d_rehash(*de);
 511                         d_drop(*de);
 512                 }
 513         }
 514
 515         RETURN(0);
 516 }
 517
 518 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 519                                    struct lookup_intent *it, int lookup_flags)
 520 {
 521         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 522         struct dentry *save = dentry, *retval;
 523         struct ptlrpc_request *req = NULL;
 524         struct md_op_data *op_data;
 525         struct it_cb_data icbd;
 526         __u32 opc;
 527         int rc;
 528         ENTRY;
 529
 530         if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
 531                 RETURN(ERR_PTR(-ENAMETOOLONG));
 532
 533         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 534                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 535                parent->i_generation, parent, LL_IT2STR(it));
 536
 537         if (d_mountpoint(dentry))
 538                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 539
 540         ll_frob_intent(&it, &lookup_it);
 541
 542         /* As do_lookup is called before follow_mount, root dentry may be left
 543          * not valid, revalidate it here. */
 544         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 545             (it->it_op & (IT_OPEN | IT_CREAT))) {
 546                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it,
 547                                             MDS_INODELOCK_LOOKUP);
 548                 if (rc)
 549                         RETURN(ERR_PTR(rc));
 550         }
 551
 552         if (it->it_op == IT_GETATTR) {
 553                 rc = ll_statahead_enter(parent, &dentry, 0);
 554                 if (rc == 1) {
 555                         if (dentry == save)
 556                                 GOTO(out, retval = NULL);
 557                         GOTO(out, retval = dentry);
 558                 }
 559         }
 560
 561         icbd.icbd_childp = &dentry;
 562         icbd.icbd_parent = parent;
 563
 564         if (it->it_op & IT_CREAT ||
 565             (it->it_op & IT_OPEN && it->it_create_mode & O_CREAT))
 566                 opc = LUSTRE_OPC_CREATE;
 567         else
 568                 opc = LUSTRE_OPC_ANY;
 569
 570         op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
 571                                      dentry->d_name.len, lookup_flags, opc,
 572                                      NULL);
 573         if (IS_ERR(op_data))
 574                 RETURN((void *)op_data);
 575
 576         it->it_create_mode &= ~cfs_curproc_umask();
 577
 578         rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
 579                             lookup_flags, &req, ll_md_blocking_ast, 0);
 580         ll_finish_md_op_data(op_data);
 581         if (rc < 0)
 582                 GOTO(out, retval = ERR_PTR(rc));
 583
 584         rc = ll_lookup_it_finish(req, it, &icbd);
 585         if (rc != 0) {
 586                 ll_intent_release(it);
 587                 GOTO(out, retval = ERR_PTR(rc));
 588         }
 589
 590         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 591             !S_ISREG(dentry->d_inode->i_mode) &&
 592             !S_ISDIR(dentry->d_inode->i_mode)) {
 593                 ll_release_openhandle(dentry, it);
 594         }
 595         ll_lookup_finish_locks(it, dentry);
 596
 597         if (dentry == save)
 598                 GOTO(out, retval = NULL);
 599         else
 600                 GOTO(out, retval = dentry);
 601  out:
 602         if (req)
 603                 ptlrpc_req_finished(req);
 604         if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
 605                 ll_statahead_mark(parent, dentry);
 606         return retval;
 607 }
 608
 609 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 610                                         int lookup_flags)
 611 {
 612         struct lookup_intent *it;
 613
 614         OBD_ALLOC(it, sizeof(*it));
 615         if (!it)
 616                 return ERR_PTR(-ENOMEM);
 617
 618         if (lookup_flags & LOOKUP_OPEN) {
 619                 it->it_op = IT_OPEN;
 620                 if (lookup_flags & LOOKUP_CREATE)
 621                         it->it_op |= IT_CREAT;
 622                 it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
 623                 it->it_flags = oit->flags;
 624         } else {
 625                 it->it_op = IT_GETATTR;
 626         }
 627
 628 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 629                 /* Since there is no way to pass our intent to ll_file_open,
 630                  * just check the file is there. Actual open will be done
 631                  * in ll_file_open */
 632                 if (it->it_op & IT_OPEN)
 633                         it->it_op = IT_LOOKUP;
 634 #endif
 635
 636         return it;
 637 }
 638
 639 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 640                                    struct nameidata *nd)
 641 {
 642         struct dentry *de;
 643         ENTRY;
 644
 645         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 646                 struct lookup_intent *it;
 647
 648 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 649                 /* Did we came here from failed revalidate just to propagate
 650                  * its error? */
 651                 if (nd->flags & LOOKUP_OPEN)
 652                         if (IS_ERR(nd->intent.open.file))
 653                                 RETURN((struct dentry *)nd->intent.open.file);
 654 #endif
 655                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 656                         it = ll_d2d(dentry)->lld_it;
 657                         ll_d2d(dentry)->lld_it = NULL;
 658                 } else {
 659                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 660                                 /* We are sure this is new dentry, so we need to create
 661                                    our private data and set the dentry ops */
 662                                 ll_dops_init(dentry, 1, 1);
 663                                 RETURN(NULL);
 664                         }
 665                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 666                         if (IS_ERR(it))
 667                                 RETURN((struct dentry *)it);
 668                 }
 669
 670                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 671                 if (de)
 672                         dentry = de;
 673                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 674                         if (dentry->d_inode &&
 675                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 676 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 677                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 678                                         // We cannot call open here as it would
 679                                         // deadlock.
 680                                         ptlrpc_req_finished(
 681                                                        (struct ptlrpc_request *)
 682                                                           it->d.lustre.it_data);
 683                                 } else {
 684 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 685 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 686  * nd->intent.open.file for error, so we need to return it as lookup's result
 687  * instead */
 688                                         struct file *filp;
 689                                         nd->intent.open.file->private_data = it;
 690                                         filp =lookup_instantiate_filp(nd,dentry,
 691                                                                       NULL);
 692                                         if (IS_ERR(filp)) {
 693                                                 if (de)
 694                                                         dput(de);
 695                                                 de = (struct dentry *) filp;
 696                                         }
 697 #else
 698                                         nd->intent.open.file->private_data = it;
 699                                         (void)lookup_instantiate_filp(nd,dentry,
 700                                                                       NULL);
 701 #endif
 702
 703                                 }
 704 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 705                                 /* Release open handle as we have no way to
 706                                  * pass it to ll_file_open */
 707                                 ll_release_openhandle(dentry, it);
 708 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 709                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 710                                 // XXX This can only reliably work on assumption
 711                                 // that there are NO hashed negative dentries.
 712                                 ll_d2d(dentry)->lld_it = it;
 713                                 it = NULL; /* Will be freed in ll_create_nd */
 714                                 /* We absolutely depend on ll_create_nd to be
 715                                  * called to not leak this intent and possible
 716                                  * data attached to it */
 717                         }
 718                 }
 719
 720                 if (it) {
 721                         ll_intent_release(it);
 722                         OBD_FREE(it, sizeof(*it));
 723                 }
 724         } else {
 725                 de = ll_lookup_it(parent, dentry, NULL, 0);
 726         }
 727
 728         RETURN(de);
 729 }
 730
 731 /* We depend on "mode" being set with the proper file type/umask by now */
 732 static struct inode *ll_create_node(struct inode *dir, const char *name,
 733                                     int namelen, const void *data, int datalen,
 734                                     int mode, __u64 extra,
 735                                     struct lookup_intent *it)
 736 {
 737         struct inode *inode = NULL;
 738         struct ptlrpc_request *request = NULL;
 739         struct ll_sb_info *sbi = ll_i2sbi(dir);
 740         int rc;
 741         ENTRY;
 742
 743         LASSERT(it && it->d.lustre.it_disposition);
 744
 745         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 746         request = it->d.lustre.it_data;
 747         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 748         rc = ll_prep_inode(&inode, request, dir->i_sb);
 749         if (rc)
 750                 GOTO(out, inode = ERR_PTR(rc));
 751
 752         LASSERT(list_empty(&inode->i_dentry));
 753
 754         /* We asked for a lock on the directory, but were granted a
 755          * lock on the inode.  Since we finally have an inode pointer,
 756          * stuff it in the lock. */
 757         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 758                inode, inode->i_ino, inode->i_generation);
 759         ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL);
 760         EXIT;
 761  out:
 762         ptlrpc_req_finished(request);
 763         return inode;
 764 }
 765
 766 /*
 767  * By the time this is called, we already have created the directory cache
 768  * entry for the new file, but it is so far negative - it has no inode.
 769  *
 770  * We defer creating the OBD object(s) until open, to keep the intent and
 771  * non-intent code paths similar, and also because we do not have the MDS
 772  * inode number before calling ll_create_node() (which is needed for LOV),
 773  * so we would need to do yet another RPC to the MDS to store the LOV EA
 774  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 775  * lmm_size in datalen (the MDS still has code which will handle that).
 776  *
 777  * If the create succeeds, we fill in the inode information
 778  * with d_instantiate().
 779  */
 780 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 781                         struct lookup_intent *it)
 782 {
 783         struct inode *inode;
 784         int rc = 0;
 785         ENTRY;
 786
 787         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 788                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 789                dir->i_generation, dir, LL_IT2STR(it));
 790
 791         rc = it_open_error(DISP_OPEN_CREATE, it);
 792         if (rc)
 793                 RETURN(rc);
 794
 795         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 796                                NULL, 0, mode, 0, it);
 797         if (IS_ERR(inode))
 798                 RETURN(PTR_ERR(inode));
 799
 800         d_instantiate(dentry, inode);
 801         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 802          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 803          * successful create. Hash it here. */
 804         spin_lock(&dcache_lock);
 805         if (d_unhashed(dentry))
 806                 d_rehash_cond(dentry, 0);
 807         spin_unlock(&dcache_lock);
 808         RETURN(0);
 809 }
 810
 811 static void ll_update_times(struct ptlrpc_request *request,
 812                             struct inode *inode)
 813 {
 814         struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
 815                                                        &RMF_MDT_BODY);
 816
 817         LASSERT(body);
 818         if (body->valid & OBD_MD_FLMTIME &&
 819             body->mtime > LTIME_S(inode->i_mtime)) {
 820                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 821                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 822                 LTIME_S(inode->i_mtime) = body->mtime;
 823         }
 824         if (body->valid & OBD_MD_FLCTIME &&
 825             body->ctime > LTIME_S(inode->i_ctime))
 826                 LTIME_S(inode->i_ctime) = body->ctime;
 827 }
 828
 829 static int ll_new_node(struct inode *dir, struct qstr *name,
 830                        const char *tgt, int mode, int rdev,
 831                        struct dentry *dchild, __u32 opc)
 832 {
 833         struct ptlrpc_request *request = NULL;
 834         struct md_op_data *op_data;
 835         struct inode *inode = NULL;
 836         struct ll_sb_info *sbi = ll_i2sbi(dir);
 837         int tgt_len = 0;
 838         int err;
 839
 840         ENTRY;
 841         if (unlikely(tgt != NULL))
 842                 tgt_len = strlen(tgt) + 1;
 843
 844         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
 845                                      name->len, 0, opc, NULL);
 846         if (IS_ERR(op_data))
 847                 GOTO(err_exit, err = PTR_ERR(op_data));
 848
 849         err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
 850                         cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 851                         cfs_curproc_cap_pack(), rdev, &request);
 852         ll_finish_md_op_data(op_data);
 853         if (err)
 854                 GOTO(err_exit, err);
 855
 856         ll_update_times(request, dir);
 857
 858         if (dchild) {
 859                 err = ll_prep_inode(&inode, request, dchild->d_sb);
 860                 if (err)
 861                      GOTO(err_exit, err);
 862
 863                 d_drop(dchild);
 864                 d_instantiate(dchild, inode);
 865         }
 866         EXIT;
 867 err_exit:
 868         ptlrpc_req_finished(request);
 869
 870         return err;
 871 }
 872
 873 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 874                             unsigned rdev, struct dentry *dchild)
 875 {
 876         int err;
 877         ENTRY;
 878
 879         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 880                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 881                mode, rdev);
 882
 883         mode &= ~cfs_curproc_umask();
 884
 885         switch (mode & S_IFMT) {
 886         case 0:
 887                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 888         case S_IFREG:
 889         case S_IFCHR:
 890         case S_IFBLK:
 891         case S_IFIFO:
 892         case S_IFSOCK:
 893                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
 894                                   LUSTRE_OPC_MKNOD);
 895                 break;
 896         case S_IFDIR:
 897                 err = -EPERM;
 898                 break;
 899         default:
 900                 err = -EINVAL;
 901         }
 902         RETURN(err);
 903 }
 904
 905 static int ll_create_nd(struct inode *dir, struct dentry *dentry,
 906                         int mode, struct nameidata *nd)
 907 {
 908         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 909         int rc;
 910
 911         if (!it)
 912                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 913
 914         ll_d2d(dentry)->lld_it = NULL;
 915
 916         /* Was there an error? Propagate it! */
 917         if (it->d.lustre.it_status) {
 918                 rc = it->d.lustre.it_status;
 919                 goto out;
 920         }
 921
 922         rc = ll_create_it(dir, dentry, mode, it);
 923 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 924         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 925                 nd->intent.open.file->private_data = it;
 926                 lookup_instantiate_filp(nd, dentry, NULL);
 927         }
 928 #else
 929         ll_release_openhandle(dentry,it);
 930 #endif
 931
 932 out:
 933         ll_intent_release(it);
 934         OBD_FREE(it, sizeof(*it));
 935
 936         return rc;
 937 }
 938
 939 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 940                               const char *tgt, struct dentry *dchild)
 941 {
 942         int err;
 943         ENTRY;
 944
 945         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 946                name->len, name->name, dir->i_ino, dir->i_generation,
 947                dir, 3000, tgt);
 948
 949         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 950                           0, dchild, LUSTRE_OPC_SYMLINK);
 951         RETURN(err);
 952 }
 953
 954 static int ll_link_generic(struct inode *src,  struct inode *dir,
 955                            struct qstr *name, struct dentry *dchild)
 956 {
 957         struct ll_sb_info *sbi = ll_i2sbi(dir);
 958         struct ptlrpc_request *request = NULL;
 959         struct md_op_data *op_data;
 960         int err;
 961
 962         ENTRY;
 963         CDEBUG(D_VFSTRACE,
 964                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
 965                src->i_ino, src->i_generation, src, dir->i_ino,
 966                dir->i_generation, dir, name->len, name->name);
 967
 968         op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
 969                                      0, LUSTRE_OPC_ANY, NULL);
 970         if (IS_ERR(op_data))
 971                 RETURN(PTR_ERR(op_data));
 972
 973         err = md_link(sbi->ll_md_exp, op_data, &request);
 974         ll_finish_md_op_data(op_data);
 975         if (err)
 976                 GOTO(out, err);
 977         if (dchild)
 978                 d_drop(dchild);
 979
 980         ll_update_times(request, dir);
 981         EXIT;
 982 out:
 983         ptlrpc_req_finished(request);
 984         RETURN(err);
 985 }
 986
 987 static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
 988                             int mode, struct dentry *dchild)
 989
 990 {
 991         int err;
 992         ENTRY;
 993
 994         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
 995                name->len, name->name, dir->i_ino, dir->i_generation, dir);
 996
 997         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~cfs_curproc_umask()) | S_IFDIR;
 998         err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
 999
1000         RETURN(err);
1001 }
1002
1003 /* Try to find the child dentry by its name.
1004    If found, put the result fid into @fid. */
1005 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1006                              struct lu_fid *fid)
1007 {
1008         struct dentry *parent, *child;
1009
1010         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1011         child = d_lookup(parent, name);
1012         if (child) {
1013                 if (child->d_inode)
1014                         *fid = *ll_inode2fid(child->d_inode);
1015                 dput(child);
1016         }
1017 }
1018
1019 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1020                             struct dentry *dchild, struct qstr *name)
1021 {
1022         struct ptlrpc_request *request = NULL;
1023         struct md_op_data *op_data;
1024         int rc;
1025         ENTRY;
1026
1027         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1028                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1029
1030         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1031                 RETURN(-EBUSY);
1032
1033         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
1034                                      S_IFDIR, LUSTRE_OPC_ANY, NULL);
1035         if (IS_ERR(op_data))
1036                 RETURN(PTR_ERR(op_data));
1037
1038         ll_get_child_fid(dir, name, &op_data->op_fid3);
1039         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1040         ll_finish_md_op_data(op_data);
1041         if (rc == 0)
1042                 ll_update_times(request, dir);
1043         ptlrpc_req_finished(request);
1044         RETURN(rc);
1045 }
1046
1047 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1048 {
1049         struct mdt_body *body;
1050         struct lov_mds_md *eadata;
1051         struct lov_stripe_md *lsm = NULL;
1052         struct obd_trans_info oti = { 0 };
1053         struct obdo *oa;
1054         struct obd_capa *oc = NULL;
1055         int rc;
1056         ENTRY;
1057
1058         /* req is swabbed so this is safe */
1059         body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
1060         if (!(body->valid & OBD_MD_FLEASIZE))
1061                 RETURN(0);
1062
1063         if (body->eadatasize == 0) {
1064                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1065                 GOTO(out, rc = -EPROTO);
1066         }
1067
1068         /* The MDS sent back the EA because we unlinked the last reference
1069          * to this file. Use this EA to unlink the objects on the OST.
1070          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1071          * check it is complete and sensible. */
1072         eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
1073                                               body->eadatasize);
1074         LASSERT(eadata != NULL);
1075
1076         rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
1077         if (rc < 0) {
1078                 CERROR("obd_unpackmd: %d\n", rc);
1079                 GOTO(out, rc);
1080         }
1081         LASSERT(rc >= sizeof(*lsm));
1082
1083         OBDO_ALLOC(oa);
1084         if (oa == NULL)
1085                 GOTO(out_free_memmd, rc = -ENOMEM);
1086
1087         oa->o_id = lsm->lsm_object_id;
1088         oa->o_seq = lsm->lsm_object_seq;
1089         oa->o_mode = body->mode & S_IFMT;
1090         oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
1091
1092         if (body->valid & OBD_MD_FLCOOKIE) {
1093                 oa->o_valid |= OBD_MD_FLCOOKIE;
1094                 oti.oti_logcookies =
1095                         req_capsule_server_sized_get(&request->rq_pill,
1096                                                      &RMF_LOGCOOKIES,
1097                                                    sizeof(struct llog_cookie) *
1098                                                      lsm->lsm_stripe_count);
1099                 if (oti.oti_logcookies == NULL) {
1100                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1101                         body->valid &= ~OBD_MD_FLCOOKIE;
1102                 }
1103         }
1104
1105         if (body->valid & OBD_MD_FLOSSCAPA) {
1106                 rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
1107                 if (rc)
1108                         GOTO(out_free_memmd, rc);
1109         }
1110
1111         rc = obd_destroy(ll_i2dtexp(dir), oa, lsm, &oti, ll_i2mdexp(dir), oc);
1112         capa_put(oc);
1113         OBDO_FREE(oa);
1114         if (rc)
1115                 CERROR("obd destroy objid "LPX64" error %d\n",
1116                        lsm->lsm_object_id, rc);
1117  out_free_memmd:
1118         obd_free_memmd(ll_i2dtexp(dir), &lsm);
1119  out:
1120         return rc;
1121 }
1122
1123 /* ll_unlink_generic() doesn't update the inode with the new link count.
1124  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1125  * is any lock existing. They will recycle dentries and inodes based upon locks
1126  * too. b=20433 */
1127 static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
1128                              struct dentry *dchild, struct qstr *name)
1129 {
1130         struct ptlrpc_request *request = NULL;
1131         struct md_op_data *op_data;
1132         int rc;
1133         ENTRY;
1134         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1135                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1136
1137         /*
1138          * XXX: unlink bind mountpoint maybe call to here,
1139          * just check it as vfs_unlink does.
1140          */
1141         if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
1142                 RETURN(-EBUSY);
1143
1144         op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
1145                                      name->len, 0, LUSTRE_OPC_ANY, NULL);
1146         if (IS_ERR(op_data))
1147                 RETURN(PTR_ERR(op_data));
1148
1149         ll_get_child_fid(dir, name, &op_data->op_fid3);
1150         rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
1151         ll_finish_md_op_data(op_data);
1152         if (rc)
1153                 GOTO(out, rc);
1154
1155         ll_update_times(request, dir);
1156
1157         rc = ll_objects_destroy(request, dir);
1158  out:
1159         ptlrpc_req_finished(request);
1160         RETURN(rc);
1161 }
1162
1163 static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
1164                              struct dentry *src_dchild, struct qstr *src_name,
1165                              struct inode *tgt, struct dentry *tgt_dparent,
1166                              struct dentry *tgt_dchild, struct qstr *tgt_name)
1167 {
1168         struct ptlrpc_request *request = NULL;
1169         struct ll_sb_info *sbi = ll_i2sbi(src);
1170         struct md_op_data *op_data;
1171         int err;
1172         ENTRY;
1173         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1174                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1175                src->i_ino, src->i_generation, src, tgt_name->len,
1176                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1177
1178         if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
1179             ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
1180                 RETURN(-EBUSY);
1181
1182         op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
1183                                      LUSTRE_OPC_ANY, NULL);
1184         if (IS_ERR(op_data))
1185                 RETURN(PTR_ERR(op_data));
1186
1187         ll_get_child_fid(src, src_name, &op_data->op_fid3);
1188         ll_get_child_fid(tgt, tgt_name, &op_data->op_fid4);
1189         err = md_rename(sbi->ll_md_exp, op_data,
1190                         src_name->name, src_name->len,
1191                         tgt_name->name, tgt_name->len, &request);
1192         ll_finish_md_op_data(op_data);
1193         if (!err) {
1194                 ll_update_times(request, src);
1195                 ll_update_times(request, tgt);
1196                 err = ll_objects_destroy(request, src);
1197         }
1198
1199         ptlrpc_req_finished(request);
1200
1201         RETURN(err);
1202 }
1203
1204 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1205                     ll_dev_t rdev)
1206 {
1207         return ll_mknod_generic(dir, &dchild->d_name, mode,
1208                                 old_encode_dev(rdev), dchild);
1209 }
1210
1211 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1212 {
1213         return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
1214 }
1215 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1216 {
1217         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1218 }
1219 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1220 {
1221         return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
1222 }
1223 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1224                       const char *oldname)
1225 {
1226         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1227 }
1228 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1229                    struct dentry *new_dentry)
1230 {
1231         return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
1232                                new_dentry);
1233 }
1234 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1235                      struct inode *new_dir, struct dentry *new_dentry)
1236 {
1237         int err;
1238         err = ll_rename_generic(old_dir, NULL,
1239                                  old_dentry, &old_dentry->d_name,
1240                                  new_dir, NULL, new_dentry,
1241                                  &new_dentry->d_name);
1242         if (!err) {
1243 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1244                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1245 #endif
1246                         d_move(old_dentry, new_dentry);
1247         }
1248         return err;
1249 }
1250
1251 struct inode_operations ll_dir_inode_operations = {
1252         .mknod              = ll_mknod,
1253         .lookup             = ll_lookup_nd,
1254         .create             = ll_create_nd,
1255         /* We need all these non-raw things for NFSD, to not patch it. */
1256         .unlink             = ll_unlink,
1257         .mkdir              = ll_mkdir,
1258         .rmdir              = ll_rmdir,
1259         .symlink            = ll_symlink,
1260         .link               = ll_link,
1261         .rename             = ll_rename,
1262         .setattr            = ll_setattr,
1263         .getattr            = ll_getattr,
1264         .permission         = ll_inode_permission,
1265         .setxattr           = ll_setxattr,
1266         .getxattr           = ll_getxattr,
1267         .listxattr          = ll_listxattr,
1268         .removexattr        = ll_removexattr,
1269 };
1270
1271 struct inode_operations ll_special_inode_operations = {
1272         .setattr        = ll_setattr,
1273         .getattr        = ll_getattr,
1274         .permission     = ll_inode_permission,
1275         .setxattr       = ll_setxattr,
1276         .getxattr       = ll_getxattr,
1277         .listxattr      = ll_listxattr,
1278         .removexattr    = ll_removexattr,
1279 };