fs/ocfs2/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; -*-
   2  * vim: noexpandtab sw=8 ts=8 sts=0:
   3  *
   4  * namei.c
   5  *
   6  * Create and rename file, directory, symlinks
   7  *
   8  * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
   9  *
  10  *  Portions of this code from linux/fs/ext3/dir.c
  11  *
  12  *  Copyright (C) 1992, 1993, 1994, 1995
  13  *  Remy Card (card@masi.ibp.fr)
  14  *  Laboratoire MASI - Institut Blaise pascal
  15  *  Universite Pierre et Marie Curie (Paris VI)
  16  *
  17  *   from
  18  *
  19  *   linux/fs/minix/dir.c
  20  *
  21  *   Copyright (C) 1991, 1992 Linux Torvalds
  22  *
  23  * This program is free software; you can redistribute it and/or
  24  * modify it under the terms of the GNU General Public
  25  * License as published by the Free Software Foundation; either
  26  * version 2 of the License, or (at your option) any later version.
  27  *
  28  * This program is distributed in the hope that it will be useful,
  29  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  30  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  31  * General Public License for more details.
  32  *
  33  * You should have received a copy of the GNU General Public
  34  * License along with this program; if not, write to the
  35  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  36  * Boston, MA 021110-1307, USA.
  37  */
  38
  39 #include <linux/fs.h>
  40 #include <linux/types.h>
  41 #include <linux/slab.h>
  42 #include <linux/highmem.h>
  43 #include <linux/quotaops.h>
  44
  45 #define MLOG_MASK_PREFIX ML_NAMEI
  46 #include <cluster/masklog.h>
  47
  48 #include "ocfs2.h"
  49
  50 #include "alloc.h"
  51 #include "dcache.h"
  52 #include "dir.h"
  53 #include "dlmglue.h"
  54 #include "extent_map.h"
  55 #include "file.h"
  56 #include "inode.h"
  57 #include "journal.h"
  58 #include "namei.h"
  59 #include "suballoc.h"
  60 #include "super.h"
  61 #include "symlink.h"
  62 #include "sysfile.h"
  63 #include "uptodate.h"
  64 #include "xattr.h"
  65 #include "acl.h"
  66
  67 #include "buffer_head_io.h"
  68
  69 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
  70                               struct inode *dir,
  71                               struct inode *inode,
  72                               struct dentry *dentry,
  73                               dev_t dev,
  74                               struct buffer_head **new_fe_bh,
  75                               struct buffer_head *parent_fe_bh,
  76                               handle_t *handle,
  77                               struct ocfs2_alloc_context *inode_ac);
  78
  79 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
  80                                     struct inode **ret_orphan_dir,
  81                                     struct inode *inode,
  82                                     char *name,
  83                                     struct ocfs2_dir_lookup_result *lookup);
  84
  85 static int ocfs2_orphan_add(struct ocfs2_super *osb,
  86                             handle_t *handle,
  87                             struct inode *inode,
  88                             struct ocfs2_dinode *fe,
  89                             char *name,
  90                             struct ocfs2_dir_lookup_result *lookup,
  91                             struct inode *orphan_dir_inode);
  92
  93 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
  94                                      handle_t *handle,
  95                                      struct inode *inode,
  96                                      const char *symname);
  97
  98 /* An orphan dir name is an 8 byte value, printed as a hex string */
  99 #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
 100
 101 static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
 102                                    struct nameidata *nd)
 103 {
 104         int status;
 105         u64 blkno;
 106         struct inode *inode = NULL;
 107         struct dentry *ret;
 108         struct ocfs2_inode_info *oi;
 109
 110         mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
 111                    dentry->d_name.len, dentry->d_name.name);
 112
 113         if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
 114                 ret = ERR_PTR(-ENAMETOOLONG);
 115                 goto bail;
 116         }
 117
 118         mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
 119              dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
 120
 121         status = ocfs2_inode_lock(dir, NULL, 0);
 122         if (status < 0) {
 123                 if (status != -ENOENT)
 124                         mlog_errno(status);
 125                 ret = ERR_PTR(status);
 126                 goto bail;
 127         }
 128
 129         status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
 130                                             dentry->d_name.len, &blkno);
 131         if (status < 0)
 132                 goto bail_add;
 133
 134         inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
 135         if (IS_ERR(inode)) {
 136                 ret = ERR_PTR(-EACCES);
 137                 goto bail_unlock;
 138         }
 139
 140         oi = OCFS2_I(inode);
 141         /* Clear any orphaned state... If we were able to look up the
 142          * inode from a directory, it certainly can't be orphaned. We
 143          * might have the bad state from a node which intended to
 144          * orphan this inode but crashed before it could commit the
 145          * unlink. */
 146         spin_lock(&oi->ip_lock);
 147         oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
 148         spin_unlock(&oi->ip_lock);
 149
 150 bail_add:
 151         dentry->d_op = &ocfs2_dentry_ops;
 152         ret = d_splice_alias(inode, dentry);
 153
 154         if (inode) {
 155                 /*
 156                  * If d_splice_alias() finds a DCACHE_DISCONNECTED
 157                  * dentry, it will d_move() it on top of ourse. The
 158                  * return value will indicate this however, so in
 159                  * those cases, we switch them around for the locking
 160                  * code.
 161                  *
 162                  * NOTE: This dentry already has ->d_op set from
 163                  * ocfs2_get_parent() and ocfs2_get_dentry()
 164                  */
 165                 if (ret)
 166                         dentry = ret;
 167
 168                 status = ocfs2_dentry_attach_lock(dentry, inode,
 169                                                   OCFS2_I(dir)->ip_blkno);
 170                 if (status) {
 171                         mlog_errno(status);
 172                         ret = ERR_PTR(status);
 173                         goto bail_unlock;
 174                 }
 175         }
 176
 177 bail_unlock:
 178         /* Don't drop the cluster lock until *after* the d_add --
 179          * unlink on another node will message us to remove that
 180          * dentry under this lock so otherwise we can race this with
 181          * the downconvert thread and have a stale dentry. */
 182         ocfs2_inode_unlock(dir, 0);
 183
 184 bail:
 185
 186         mlog_exit_ptr(ret);
 187
 188         return ret;
 189 }
 190
 191 static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
 192 {
 193         struct inode *inode;
 194
 195         inode = new_inode(dir->i_sb);
 196         if (!inode) {
 197                 mlog(ML_ERROR, "new_inode failed!\n");
 198                 return NULL;
 199         }
 200
 201         /* populate as many fields early on as possible - many of
 202          * these are used by the support functions here and in
 203          * callers. */
 204         if (S_ISDIR(mode))
 205                 inode->i_nlink = 2;
 206         else
 207                 inode->i_nlink = 1;
 208         inode->i_uid = current_fsuid();
 209         if (dir->i_mode & S_ISGID) {
 210                 inode->i_gid = dir->i_gid;
 211                 if (S_ISDIR(mode))
 212                         mode |= S_ISGID;
 213         } else
 214                 inode->i_gid = current_fsgid();
 215         inode->i_mode = mode;
 216         vfs_dq_init(inode);
 217         return inode;
 218 }
 219
 220 static int ocfs2_mknod(struct inode *dir,
 221                        struct dentry *dentry,
 222                        int mode,
 223                        dev_t dev)
 224 {
 225         int status = 0;
 226         struct buffer_head *parent_fe_bh = NULL;
 227         handle_t *handle = NULL;
 228         struct ocfs2_super *osb;
 229         struct ocfs2_dinode *dirfe;
 230         struct buffer_head *new_fe_bh = NULL;
 231         struct inode *inode = NULL;
 232         struct ocfs2_alloc_context *inode_ac = NULL;
 233         struct ocfs2_alloc_context *data_ac = NULL;
 234         struct ocfs2_alloc_context *xattr_ac = NULL;
 235         int want_clusters = 0;
 236         int xattr_credits = 0;
 237         struct ocfs2_security_xattr_info si = {
 238                 .enable = 1,
 239         };
 240         int did_quota_inode = 0;
 241         struct ocfs2_dir_lookup_result lookup = { NULL, };
 242
 243         mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
 244                    (unsigned long)dev, dentry->d_name.len,
 245                    dentry->d_name.name);
 246
 247         /* get our super block */
 248         osb = OCFS2_SB(dir->i_sb);
 249
 250         status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
 251         if (status < 0) {
 252                 if (status != -ENOENT)
 253                         mlog_errno(status);
 254                 return status;
 255         }
 256
 257         if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) {
 258                 status = -EMLINK;
 259                 goto leave;
 260         }
 261
 262         dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
 263         if (!dirfe->i_links_count) {
 264                 /* can't make a file in a deleted directory. */
 265                 status = -ENOENT;
 266                 goto leave;
 267         }
 268
 269         status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
 270                                            dentry->d_name.len);
 271         if (status)
 272                 goto leave;
 273
 274         /* get a spot inside the dir. */
 275         status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
 276                                               dentry->d_name.name,
 277                                               dentry->d_name.len, &lookup);
 278         if (status < 0) {
 279                 mlog_errno(status);
 280                 goto leave;
 281         }
 282
 283         /* reserve an inode spot */
 284         status = ocfs2_reserve_new_inode(osb, &inode_ac);
 285         if (status < 0) {
 286                 if (status != -ENOSPC)
 287                         mlog_errno(status);
 288                 goto leave;
 289         }
 290
 291         inode = ocfs2_get_init_inode(dir, mode);
 292         if (!inode) {
 293                 status = -ENOMEM;
 294                 mlog_errno(status);
 295                 goto leave;
 296         }
 297
 298         /* get security xattr */
 299         status = ocfs2_init_security_get(inode, dir, &si);
 300         if (status) {
 301                 if (status == -EOPNOTSUPP)
 302                         si.enable = 0;
 303                 else {
 304                         mlog_errno(status);
 305                         goto leave;
 306                 }
 307         }
 308
 309         /* calculate meta data/clusters for setting security and acl xattr */
 310         status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
 311                                         &si, &want_clusters,
 312                                         &xattr_credits, &xattr_ac);
 313         if (status < 0) {
 314                 mlog_errno(status);
 315                 goto leave;
 316         }
 317
 318         /* Reserve a cluster if creating an extent based directory. */
 319         if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb))
 320                 want_clusters += 1;
 321
 322         status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
 323         if (status < 0) {
 324                 if (status != -ENOSPC)
 325                         mlog_errno(status);
 326                 goto leave;
 327         }
 328
 329         handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb) +
 330                                    xattr_credits);
 331         if (IS_ERR(handle)) {
 332                 status = PTR_ERR(handle);
 333                 handle = NULL;
 334                 mlog_errno(status);
 335                 goto leave;
 336         }
 337
 338         /* We don't use standard VFS wrapper because we don't want vfs_dq_init
 339          * to be called. */
 340         if (sb_any_quota_active(osb->sb) &&
 341             osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
 342                 status = -EDQUOT;
 343                 goto leave;
 344         }
 345         did_quota_inode = 1;
 346
 347         /* do the real work now. */
 348         status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev,
 349                                     &new_fe_bh, parent_fe_bh, handle,
 350                                     inode_ac);
 351         if (status < 0) {
 352                 mlog_errno(status);
 353                 goto leave;
 354         }
 355
 356         if (S_ISDIR(mode)) {
 357                 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
 358                                             new_fe_bh, data_ac);
 359                 if (status < 0) {
 360                         mlog_errno(status);
 361                         goto leave;
 362                 }
 363
 364                 status = ocfs2_journal_access_di(handle, dir, parent_fe_bh,
 365                                                  OCFS2_JOURNAL_ACCESS_WRITE);
 366                 if (status < 0) {
 367                         mlog_errno(status);
 368                         goto leave;
 369                 }
 370                 le16_add_cpu(&dirfe->i_links_count, 1);
 371                 status = ocfs2_journal_dirty(handle, parent_fe_bh);
 372                 if (status < 0) {
 373                         mlog_errno(status);
 374                         goto leave;
 375                 }
 376                 inc_nlink(dir);
 377         }
 378
 379         status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
 380                                 xattr_ac, data_ac);
 381         if (status < 0) {
 382                 mlog_errno(status);
 383                 goto leave;
 384         }
 385
 386         if (si.enable) {
 387                 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
 388                                                  xattr_ac, data_ac);
 389                 if (status < 0) {
 390                         mlog_errno(status);
 391                         goto leave;
 392                 }
 393         }
 394
 395         status = ocfs2_add_entry(handle, dentry, inode,
 396                                  OCFS2_I(inode)->ip_blkno, parent_fe_bh,
 397                                  &lookup);
 398         if (status < 0) {
 399                 mlog_errno(status);
 400                 goto leave;
 401         }
 402
 403         status = ocfs2_dentry_attach_lock(dentry, inode,
 404                                           OCFS2_I(dir)->ip_blkno);
 405         if (status) {
 406                 mlog_errno(status);
 407                 goto leave;
 408         }
 409
 410         insert_inode_hash(inode);
 411         dentry->d_op = &ocfs2_dentry_ops;
 412         d_instantiate(dentry, inode);
 413         status = 0;
 414 leave:
 415         if (status < 0 && did_quota_inode)
 416                 vfs_dq_free_inode(inode);
 417         if (handle)
 418                 ocfs2_commit_trans(osb, handle);
 419
 420         ocfs2_inode_unlock(dir, 1);
 421
 422         if (status == -ENOSPC)
 423                 mlog(0, "Disk is full\n");
 424
 425         brelse(new_fe_bh);
 426         brelse(parent_fe_bh);
 427         kfree(si.name);
 428         kfree(si.value);
 429
 430         ocfs2_free_dir_lookup_result(&lookup);
 431
 432         if ((status < 0) && inode) {
 433                 clear_nlink(inode);
 434                 iput(inode);
 435         }
 436
 437         if (inode_ac)
 438                 ocfs2_free_alloc_context(inode_ac);
 439
 440         if (data_ac)
 441                 ocfs2_free_alloc_context(data_ac);
 442
 443         if (xattr_ac)
 444                 ocfs2_free_alloc_context(xattr_ac);
 445
 446         mlog_exit(status);
 447
 448         return status;
 449 }
 450
 451 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
 452                               struct inode *dir,
 453                               struct inode *inode,
 454                               struct dentry *dentry,
 455                               dev_t dev,
 456                               struct buffer_head **new_fe_bh,
 457                               struct buffer_head *parent_fe_bh,
 458                               handle_t *handle,
 459                               struct ocfs2_alloc_context *inode_ac)
 460 {
 461         int status = 0;
 462         struct ocfs2_dinode *fe = NULL;
 463         struct ocfs2_extent_list *fel;
 464         u64 fe_blkno = 0;
 465         u16 suballoc_bit;
 466
 467         mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
 468                    inode->i_mode, (unsigned long)dev, dentry->d_name.len,
 469                    dentry->d_name.name);
 470
 471         *new_fe_bh = NULL;
 472
 473         status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit,
 474                                        &fe_blkno);
 475         if (status < 0) {
 476                 mlog_errno(status);
 477                 goto leave;
 478         }
 479
 480         /* populate as many fields early on as possible - many of
 481          * these are used by the support functions here and in
 482          * callers. */
 483         inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
 484         OCFS2_I(inode)->ip_blkno = fe_blkno;
 485         spin_lock(&osb->osb_lock);
 486         inode->i_generation = osb->s_next_generation++;
 487         spin_unlock(&osb->osb_lock);
 488
 489         *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
 490         if (!*new_fe_bh) {
 491                 status = -EIO;
 492                 mlog_errno(status);
 493                 goto leave;
 494         }
 495         ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh);
 496
 497         status = ocfs2_journal_access_di(handle, inode, *new_fe_bh,
 498                                          OCFS2_JOURNAL_ACCESS_CREATE);
 499         if (status < 0) {
 500                 mlog_errno(status);
 501                 goto leave;
 502         }
 503
 504         fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
 505         memset(fe, 0, osb->sb->s_blocksize);
 506
 507         fe->i_generation = cpu_to_le32(inode->i_generation);
 508         fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
 509         fe->i_blkno = cpu_to_le64(fe_blkno);
 510         fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
 511         fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
 512         fe->i_uid = cpu_to_le32(inode->i_uid);
 513         fe->i_gid = cpu_to_le32(inode->i_gid);
 514         fe->i_mode = cpu_to_le16(inode->i_mode);
 515         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
 516                 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
 517         fe->i_links_count = cpu_to_le16(inode->i_nlink);
 518
 519         fe->i_last_eb_blk = 0;
 520         strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
 521         le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL);
 522         fe->i_atime = fe->i_ctime = fe->i_mtime =
 523                 cpu_to_le64(CURRENT_TIME.tv_sec);
 524         fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
 525                 cpu_to_le32(CURRENT_TIME.tv_nsec);
 526         fe->i_dtime = 0;
 527
 528         /*
 529          * If supported, directories start with inline data.
 530          */
 531         if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
 532                 u16 feat = le16_to_cpu(fe->i_dyn_features);
 533
 534                 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
 535
 536                 fe->id2.i_data.id_count = cpu_to_le16(
 537                                 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
 538         } else {
 539                 fel = &fe->id2.i_list;
 540                 fel->l_tree_depth = 0;
 541                 fel->l_next_free_rec = 0;
 542                 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
 543         }
 544
 545         status = ocfs2_journal_dirty(handle, *new_fe_bh);
 546         if (status < 0) {
 547                 mlog_errno(status);
 548                 goto leave;
 549         }
 550
 551         ocfs2_populate_inode(inode, fe, 1);
 552         ocfs2_inode_set_new(osb, inode);
 553         if (!ocfs2_mount_local(osb)) {
 554                 status = ocfs2_create_new_inode_locks(inode);
 555                 if (status < 0)
 556                         mlog_errno(status);
 557         }
 558
 559         status = 0; /* error in ocfs2_create_new_inode_locks is not
 560                      * critical */
 561
 562 leave:
 563         if (status < 0) {
 564                 if (*new_fe_bh) {
 565                         brelse(*new_fe_bh);
 566                         *new_fe_bh = NULL;
 567                 }
 568         }
 569
 570         mlog_exit(status);
 571         return status;
 572 }
 573
 574 static int ocfs2_mkdir(struct inode *dir,
 575                        struct dentry *dentry,
 576                        int mode)
 577 {
 578         int ret;
 579
 580         mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
 581                    dentry->d_name.len, dentry->d_name.name);
 582         ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
 583         mlog_exit(ret);
 584
 585         return ret;
 586 }
 587
 588 static int ocfs2_create(struct inode *dir,
 589                         struct dentry *dentry,
 590                         int mode,
 591                         struct nameidata *nd)
 592 {
 593         int ret;
 594
 595         mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
 596                    dentry->d_name.len, dentry->d_name.name);
 597         ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
 598         mlog_exit(ret);
 599
 600         return ret;
 601 }
 602
 603 static int ocfs2_link(struct dentry *old_dentry,
 604                       struct inode *dir,
 605                       struct dentry *dentry)
 606 {
 607         handle_t *handle;
 608         struct inode *inode = old_dentry->d_inode;
 609         int err;
 610         struct buffer_head *fe_bh = NULL;
 611         struct buffer_head *parent_fe_bh = NULL;
 612         struct ocfs2_dinode *fe = NULL;
 613         struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
 614         struct ocfs2_dir_lookup_result lookup = { NULL, };
 615
 616         mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
 617                    old_dentry->d_name.len, old_dentry->d_name.name,
 618                    dentry->d_name.len, dentry->d_name.name);
 619
 620         if (S_ISDIR(inode->i_mode))
 621                 return -EPERM;
 622
 623         err = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
 624         if (err < 0) {
 625                 if (err != -ENOENT)
 626                         mlog_errno(err);
 627                 return err;
 628         }
 629
 630         if (!dir->i_nlink) {
 631                 err = -ENOENT;
 632                 goto out;
 633         }
 634
 635         err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
 636                                         dentry->d_name.len);
 637         if (err)
 638                 goto out;
 639
 640         err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
 641                                            dentry->d_name.name,
 642                                            dentry->d_name.len, &lookup);
 643         if (err < 0) {
 644                 mlog_errno(err);
 645                 goto out;
 646         }
 647
 648         err = ocfs2_inode_lock(inode, &fe_bh, 1);
 649         if (err < 0) {
 650                 if (err != -ENOENT)
 651                         mlog_errno(err);
 652                 goto out;
 653         }
 654
 655         fe = (struct ocfs2_dinode *) fe_bh->b_data;
 656         if (le16_to_cpu(fe->i_links_count) >= OCFS2_LINK_MAX) {
 657                 err = -EMLINK;
 658                 goto out_unlock_inode;
 659         }
 660
 661         handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
 662         if (IS_ERR(handle)) {
 663                 err = PTR_ERR(handle);
 664                 handle = NULL;
 665                 mlog_errno(err);
 666                 goto out_unlock_inode;
 667         }
 668
 669         err = ocfs2_journal_access_di(handle, inode, fe_bh,
 670                                       OCFS2_JOURNAL_ACCESS_WRITE);
 671         if (err < 0) {
 672                 mlog_errno(err);
 673                 goto out_commit;
 674         }
 675
 676         inc_nlink(inode);
 677         inode->i_ctime = CURRENT_TIME;
 678         fe->i_links_count = cpu_to_le16(inode->i_nlink);
 679         fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 680         fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 681
 682         err = ocfs2_journal_dirty(handle, fe_bh);
 683         if (err < 0) {
 684                 le16_add_cpu(&fe->i_links_count, -1);
 685                 drop_nlink(inode);
 686                 mlog_errno(err);
 687                 goto out_commit;
 688         }
 689
 690         err = ocfs2_add_entry(handle, dentry, inode,
 691                               OCFS2_I(inode)->ip_blkno,
 692                               parent_fe_bh, &lookup);
 693         if (err) {
 694                 le16_add_cpu(&fe->i_links_count, -1);
 695                 drop_nlink(inode);
 696                 mlog_errno(err);
 697                 goto out_commit;
 698         }
 699
 700         err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
 701         if (err) {
 702                 mlog_errno(err);
 703                 goto out_commit;
 704         }
 705
 706         atomic_inc(&inode->i_count);
 707         dentry->d_op = &ocfs2_dentry_ops;
 708         d_instantiate(dentry, inode);
 709
 710 out_commit:
 711         ocfs2_commit_trans(osb, handle);
 712 out_unlock_inode:
 713         ocfs2_inode_unlock(inode, 1);
 714
 715 out:
 716         ocfs2_inode_unlock(dir, 1);
 717
 718         brelse(fe_bh);
 719         brelse(parent_fe_bh);
 720
 721         ocfs2_free_dir_lookup_result(&lookup);
 722
 723         mlog_exit(err);
 724
 725         return err;
 726 }
 727
 728 /*
 729  * Takes and drops an exclusive lock on the given dentry. This will
 730  * force other nodes to drop it.
 731  */
 732 static int ocfs2_remote_dentry_delete(struct dentry *dentry)
 733 {
 734         int ret;
 735
 736         ret = ocfs2_dentry_lock(dentry, 1);
 737         if (ret)
 738                 mlog_errno(ret);
 739         else
 740                 ocfs2_dentry_unlock(dentry, 1);
 741
 742         return ret;
 743 }
 744
 745 static inline int inode_is_unlinkable(struct inode *inode)
 746 {
 747         if (S_ISDIR(inode->i_mode)) {
 748                 if (inode->i_nlink == 2)
 749                         return 1;
 750                 return 0;
 751         }
 752
 753         if (inode->i_nlink == 1)
 754                 return 1;
 755         return 0;
 756 }
 757
 758 static int ocfs2_unlink(struct inode *dir,
 759                         struct dentry *dentry)
 760 {
 761         int status;
 762         int child_locked = 0;
 763         struct inode *inode = dentry->d_inode;
 764         struct inode *orphan_dir = NULL;
 765         struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
 766         u64 blkno;
 767         struct ocfs2_dinode *fe = NULL;
 768         struct buffer_head *fe_bh = NULL;
 769         struct buffer_head *parent_node_bh = NULL;
 770         handle_t *handle = NULL;
 771         char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
 772         struct ocfs2_dir_lookup_result lookup = { NULL, };
 773         struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
 774
 775         mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
 776                    dentry->d_name.len, dentry->d_name.name);
 777
 778         BUG_ON(dentry->d_parent->d_inode != dir);
 779
 780         mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
 781
 782         if (inode == osb->root_inode) {
 783                 mlog(0, "Cannot delete the root directory\n");
 784                 return -EPERM;
 785         }
 786
 787         status = ocfs2_inode_lock(dir, &parent_node_bh, 1);
 788         if (status < 0) {
 789                 if (status != -ENOENT)
 790                         mlog_errno(status);
 791                 return status;
 792         }
 793
 794         status = ocfs2_find_files_on_disk(dentry->d_name.name,
 795                                           dentry->d_name.len, &blkno, dir,
 796                                           &lookup);
 797         if (status < 0) {
 798                 if (status != -ENOENT)
 799                         mlog_errno(status);
 800                 goto leave;
 801         }
 802
 803         if (OCFS2_I(inode)->ip_blkno != blkno) {
 804                 status = -ENOENT;
 805
 806                 mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n",
 807                      (unsigned long long)OCFS2_I(inode)->ip_blkno,
 808                      (unsigned long long)blkno, OCFS2_I(inode)->ip_flags);
 809                 goto leave;
 810         }
 811
 812         status = ocfs2_inode_lock(inode, &fe_bh, 1);
 813         if (status < 0) {
 814                 if (status != -ENOENT)
 815                         mlog_errno(status);
 816                 goto leave;
 817         }
 818         child_locked = 1;
 819
 820         if (S_ISDIR(inode->i_mode)) {
 821                 if (!ocfs2_empty_dir(inode)) {
 822                         status = -ENOTEMPTY;
 823                         goto leave;
 824                 } else if (inode->i_nlink != 2) {
 825                         status = -ENOTEMPTY;
 826                         goto leave;
 827                 }
 828         }
 829
 830         status = ocfs2_remote_dentry_delete(dentry);
 831         if (status < 0) {
 832                 /* This remote delete should succeed under all normal
 833                  * circumstances. */
 834                 mlog_errno(status);
 835                 goto leave;
 836         }
 837
 838         if (inode_is_unlinkable(inode)) {
 839                 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode,
 840                                                   orphan_name, &orphan_insert);
 841                 if (status < 0) {
 842                         mlog_errno(status);
 843                         goto leave;
 844                 }
 845         }
 846
 847         handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
 848         if (IS_ERR(handle)) {
 849                 status = PTR_ERR(handle);
 850                 handle = NULL;
 851                 mlog_errno(status);
 852                 goto leave;
 853         }
 854
 855         status = ocfs2_journal_access_di(handle, inode, fe_bh,
 856                                          OCFS2_JOURNAL_ACCESS_WRITE);
 857         if (status < 0) {
 858                 mlog_errno(status);
 859                 goto leave;
 860         }
 861
 862         fe = (struct ocfs2_dinode *) fe_bh->b_data;
 863
 864         if (inode_is_unlinkable(inode)) {
 865                 status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name,
 866                                           &orphan_insert, orphan_dir);
 867                 if (status < 0) {
 868                         mlog_errno(status);
 869                         goto leave;
 870                 }
 871         }
 872
 873         /* delete the name from the parent dir */
 874         status = ocfs2_delete_entry(handle, dir, &lookup);
 875         if (status < 0) {
 876                 mlog_errno(status);
 877                 goto leave;
 878         }
 879
 880         if (S_ISDIR(inode->i_mode))
 881                 drop_nlink(inode);
 882         drop_nlink(inode);
 883         fe->i_links_count = cpu_to_le16(inode->i_nlink);
 884
 885         status = ocfs2_journal_dirty(handle, fe_bh);
 886         if (status < 0) {
 887                 mlog_errno(status);
 888                 goto leave;
 889         }
 890
 891         dir->i_ctime = dir->i_mtime = CURRENT_TIME;
 892         if (S_ISDIR(inode->i_mode))
 893                 drop_nlink(dir);
 894
 895         status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
 896         if (status < 0) {
 897                 mlog_errno(status);
 898                 if (S_ISDIR(inode->i_mode))
 899                         inc_nlink(dir);
 900         }
 901
 902 leave:
 903         if (handle)
 904                 ocfs2_commit_trans(osb, handle);
 905
 906         if (child_locked)
 907                 ocfs2_inode_unlock(inode, 1);
 908
 909         ocfs2_inode_unlock(dir, 1);
 910
 911         if (orphan_dir) {
 912                 /* This was locked for us in ocfs2_prepare_orphan_dir() */
 913                 ocfs2_inode_unlock(orphan_dir, 1);
 914                 mutex_unlock(&orphan_dir->i_mutex);
 915                 iput(orphan_dir);
 916         }
 917
 918         brelse(fe_bh);
 919         brelse(parent_node_bh);
 920
 921         ocfs2_free_dir_lookup_result(&orphan_insert);
 922         ocfs2_free_dir_lookup_result(&lookup);
 923
 924         mlog_exit(status);
 925
 926         return status;
 927 }
 928
 929 /*
 930  * The only place this should be used is rename!
 931  * if they have the same id, then the 1st one is the only one locked.
 932  */
 933 static int ocfs2_double_lock(struct ocfs2_super *osb,
 934                              struct buffer_head **bh1,
 935                              struct inode *inode1,
 936                              struct buffer_head **bh2,
 937                              struct inode *inode2)
 938 {
 939         int status;
 940         struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
 941         struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
 942         struct buffer_head **tmpbh;
 943         struct inode *tmpinode;
 944
 945         mlog_entry("(inode1 = %llu, inode2 = %llu)\n",
 946                    (unsigned long long)oi1->ip_blkno,
 947                    (unsigned long long)oi2->ip_blkno);
 948
 949         if (*bh1)
 950                 *bh1 = NULL;
 951         if (*bh2)
 952                 *bh2 = NULL;
 953
 954         /* we always want to lock the one with the lower lockid first. */
 955         if (oi1->ip_blkno != oi2->ip_blkno) {
 956                 if (oi1->ip_blkno < oi2->ip_blkno) {
 957                         /* switch id1 and id2 around */
 958                         mlog(0, "switching them around...\n");
 959                         tmpbh = bh2;
 960                         bh2 = bh1;
 961                         bh1 = tmpbh;
 962
 963                         tmpinode = inode2;
 964                         inode2 = inode1;
 965                         inode1 = tmpinode;
 966                 }
 967                 /* lock id2 */
 968                 status = ocfs2_inode_lock(inode2, bh2, 1);
 969                 if (status < 0) {
 970                         if (status != -ENOENT)
 971                                 mlog_errno(status);
 972                         goto bail;
 973                 }
 974         }
 975
 976         /* lock id1 */
 977         status = ocfs2_inode_lock(inode1, bh1, 1);
 978         if (status < 0) {
 979                 /*
 980                  * An error return must mean that no cluster locks
 981                  * were held on function exit.
 982                  */
 983                 if (oi1->ip_blkno != oi2->ip_blkno)
 984                         ocfs2_inode_unlock(inode2, 1);
 985
 986                 if (status != -ENOENT)
 987                         mlog_errno(status);
 988         }
 989
 990 bail:
 991         mlog_exit(status);
 992         return status;
 993 }
 994
 995 static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
 996 {
 997         ocfs2_inode_unlock(inode1, 1);
 998
 999         if (inode1 != inode2)
1000                 ocfs2_inode_unlock(inode2, 1);
1001 }
1002
1003 static int ocfs2_rename(struct inode *old_dir,
1004                         struct dentry *old_dentry,
1005                         struct inode *new_dir,
1006                         struct dentry *new_dentry)
1007 {
1008         int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1009         int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
1010         struct inode *old_inode = old_dentry->d_inode;
1011         struct inode *new_inode = new_dentry->d_inode;
1012         struct inode *orphan_dir = NULL;
1013         struct ocfs2_dinode *newfe = NULL;
1014         char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
1015         struct buffer_head *orphan_entry_bh = NULL;
1016         struct buffer_head *newfe_bh = NULL;
1017         struct buffer_head *old_inode_bh = NULL;
1018         struct buffer_head *insert_entry_bh = NULL;
1019         struct ocfs2_super *osb = NULL;
1020         u64 newfe_blkno, old_de_ino;
1021         handle_t *handle = NULL;
1022         struct buffer_head *old_dir_bh = NULL;
1023         struct buffer_head *new_dir_bh = NULL;
1024         nlink_t old_dir_nlink = old_dir->i_nlink;
1025         struct ocfs2_dinode *old_di;
1026         struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1027         struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1028         struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1029         struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1030         struct ocfs2_dir_lookup_result target_insert = { NULL, };
1031
1032         /* At some point it might be nice to break this function up a
1033          * bit. */
1034
1035         mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n",
1036                    old_dir, old_dentry, new_dir, new_dentry,
1037                    old_dentry->d_name.len, old_dentry->d_name.name,
1038                    new_dentry->d_name.len, new_dentry->d_name.name);
1039
1040         osb = OCFS2_SB(old_dir->i_sb);
1041
1042         if (new_inode) {
1043                 if (!igrab(new_inode))
1044                         BUG();
1045         }
1046
1047         /* Assume a directory hierarchy thusly:
1048          * a/b/c
1049          * a/d
1050          * a,b,c, and d are all directories.
1051          *
1052          * from cwd of 'a' on both nodes:
1053          * node1: mv b/c d
1054          * node2: mv d   b/c
1055          *
1056          * And that's why, just like the VFS, we need a file system
1057          * rename lock. */
1058         if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
1059                 status = ocfs2_rename_lock(osb);
1060                 if (status < 0) {
1061                         mlog_errno(status);
1062                         goto bail;
1063                 }
1064                 rename_lock = 1;
1065         }
1066
1067         /* if old and new are the same, this'll just do one lock. */
1068         status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1069                                    &new_dir_bh, new_dir);
1070         if (status < 0) {
1071                 mlog_errno(status);
1072                 goto bail;
1073         }
1074         parents_locked = 1;
1075
1076         /* make sure both dirs have bhs
1077          * get an extra ref on old_dir_bh if old==new */
1078         if (!new_dir_bh) {
1079                 if (old_dir_bh) {
1080                         new_dir_bh = old_dir_bh;
1081                         get_bh(new_dir_bh);
1082                 } else {
1083                         mlog(ML_ERROR, "no old_dir_bh!\n");
1084                         status = -EIO;
1085                         goto bail;
1086                 }
1087         }
1088
1089         /*
1090          * Aside from allowing a meta data update, the locking here
1091          * also ensures that the downconvert thread on other nodes
1092          * won't have to concurrently downconvert the inode and the
1093          * dentry locks.
1094          */
1095         status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1);
1096         if (status < 0) {
1097                 if (status != -ENOENT)
1098                         mlog_errno(status);
1099                 goto bail;
1100         }
1101         old_child_locked = 1;
1102
1103         status = ocfs2_remote_dentry_delete(old_dentry);
1104         if (status < 0) {
1105                 mlog_errno(status);
1106                 goto bail;
1107         }
1108
1109         if (S_ISDIR(old_inode->i_mode)) {
1110                 u64 old_inode_parent;
1111
1112                 update_dot_dot = 1;
1113                 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
1114                                                   old_inode,
1115                                                   &old_inode_dot_dot_res);
1116                 if (status) {
1117                         status = -EIO;
1118                         goto bail;
1119                 }
1120
1121                 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1122                         status = -EIO;
1123                         goto bail;
1124                 }
1125
1126                 if (!new_inode && new_dir != old_dir &&
1127                     new_dir->i_nlink >= OCFS2_LINK_MAX) {
1128                         status = -EMLINK;
1129                         goto bail;
1130                 }
1131         }
1132
1133         status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1134                                             old_dentry->d_name.len,
1135                                             &old_de_ino);
1136         if (status) {
1137                 status = -ENOENT;
1138                 goto bail;
1139         }
1140
1141         /*
1142          *  Check for inode number is _not_ due to possible IO errors.
1143          *  We might rmdir the source, keep it as pwd of some process
1144          *  and merrily kill the link to whatever was created under the
1145          *  same name. Goodbye sticky bit ;-<
1146          */
1147         if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1148                 status = -ENOENT;
1149                 goto bail;
1150         }
1151
1152         /* check if the target already exists (in which case we need
1153          * to delete it */
1154         status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1155                                           new_dentry->d_name.len,
1156                                           &newfe_blkno, new_dir,
1157                                           &target_lookup_res);
1158         /* The only error we allow here is -ENOENT because the new
1159          * file not existing is perfectly valid. */
1160         if ((status < 0) && (status != -ENOENT)) {
1161                 /* If we cannot find the file specified we should just */
1162                 /* return the error... */
1163                 mlog_errno(status);
1164                 goto bail;
1165         }
1166         if (status == 0)
1167                 target_exists = 1;
1168
1169         if (!target_exists && new_inode) {
1170                 /*
1171                  * Target was unlinked by another node while we were
1172                  * waiting to get to ocfs2_rename(). There isn't
1173                  * anything we can do here to help the situation, so
1174                  * bubble up the appropriate error.
1175                  */
1176                 status = -ENOENT;
1177                 goto bail;
1178         }
1179
1180         /* In case we need to overwrite an existing file, we blow it
1181          * away first */
1182         if (target_exists) {
1183                 /* VFS didn't think there existed an inode here, but
1184                  * someone else in the cluster must have raced our
1185                  * rename to create one. Today we error cleanly, in
1186                  * the future we should consider calling iget to build
1187                  * a new struct inode for this entry. */
1188                 if (!new_inode) {
1189                         status = -EACCES;
1190
1191                         mlog(0, "We found an inode for name %.*s but VFS "
1192                              "didn't give us one.\n", new_dentry->d_name.len,
1193                              new_dentry->d_name.name);
1194                         goto bail;
1195                 }
1196
1197                 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1198                         status = -EACCES;
1199
1200                         mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n",
1201                              (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1202                              (unsigned long long)newfe_blkno,
1203                              OCFS2_I(new_inode)->ip_flags);
1204                         goto bail;
1205                 }
1206
1207                 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
1208                 if (status < 0) {
1209                         if (status != -ENOENT)
1210                                 mlog_errno(status);
1211                         goto bail;
1212                 }
1213                 new_child_locked = 1;
1214
1215                 status = ocfs2_remote_dentry_delete(new_dentry);
1216                 if (status < 0) {
1217                         mlog_errno(status);
1218                         goto bail;
1219                 }
1220
1221                 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1222
1223                 mlog(0, "aha rename over existing... new_blkno=%llu "
1224                      "newfebh=%p bhblocknr=%llu\n",
1225                      (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
1226                      (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1227
1228                 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
1229                         status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
1230                                                           new_inode,
1231                                                           orphan_name,
1232                                                           &orphan_insert);
1233                         if (status < 0) {
1234                                 mlog_errno(status);
1235                                 goto bail;
1236                         }
1237                 }
1238         } else {
1239                 BUG_ON(new_dentry->d_parent->d_inode != new_dir);
1240
1241                 status = ocfs2_check_dir_for_entry(new_dir,
1242                                                    new_dentry->d_name.name,
1243                                                    new_dentry->d_name.len);
1244                 if (status)
1245                         goto bail;
1246
1247                 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1248                                                       new_dentry->d_name.name,
1249                                                       new_dentry->d_name.len,
1250                                                       &target_insert);
1251                 if (status < 0) {
1252                         mlog_errno(status);
1253                         goto bail;
1254                 }
1255         }
1256
1257         handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
1258         if (IS_ERR(handle)) {
1259                 status = PTR_ERR(handle);
1260                 handle = NULL;
1261                 mlog_errno(status);
1262                 goto bail;
1263         }
1264
1265         if (target_exists) {
1266                 if (S_ISDIR(new_inode->i_mode)) {
1267                         if (!ocfs2_empty_dir(new_inode) ||
1268                             new_inode->i_nlink != 2) {
1269                                 status = -ENOTEMPTY;
1270                                 goto bail;
1271                         }
1272                 }
1273                 status = ocfs2_journal_access_di(handle, new_inode, newfe_bh,
1274                                                  OCFS2_JOURNAL_ACCESS_WRITE);
1275                 if (status < 0) {
1276                         mlog_errno(status);
1277                         goto bail;
1278                 }
1279
1280                 if (S_ISDIR(new_inode->i_mode) ||
1281                     (newfe->i_links_count == cpu_to_le16(1))){
1282                         status = ocfs2_orphan_add(osb, handle, new_inode,
1283                                                   newfe, orphan_name,
1284                                                   &orphan_insert, orphan_dir);
1285                         if (status < 0) {
1286                                 mlog_errno(status);
1287                                 goto bail;
1288                         }
1289                 }
1290
1291                 /* change the dirent to point to the correct inode */
1292                 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1293                                             old_inode);
1294                 if (status < 0) {
1295                         mlog_errno(status);
1296                         goto bail;
1297                 }
1298                 new_dir->i_version++;
1299
1300                 if (S_ISDIR(new_inode->i_mode))
1301                         newfe->i_links_count = 0;
1302                 else
1303                         le16_add_cpu(&newfe->i_links_count, -1);
1304
1305                 status = ocfs2_journal_dirty(handle, newfe_bh);
1306                 if (status < 0) {
1307                         mlog_errno(status);
1308                         goto bail;
1309                 }
1310         } else {
1311                 /* if the name was not found in new_dir, add it now */
1312                 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1313                                          OCFS2_I(old_inode)->ip_blkno,
1314                                          new_dir_bh, &target_insert);
1315         }
1316
1317         old_inode->i_ctime = CURRENT_TIME;
1318         mark_inode_dirty(old_inode);
1319
1320         status = ocfs2_journal_access_di(handle, old_inode, old_inode_bh,
1321                                          OCFS2_JOURNAL_ACCESS_WRITE);
1322         if (status >= 0) {
1323                 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1324
1325                 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1326                 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
1327
1328                 status = ocfs2_journal_dirty(handle, old_inode_bh);
1329                 if (status < 0)
1330                         mlog_errno(status);
1331         } else
1332                 mlog_errno(status);
1333
1334         /*
1335          * Now that the name has been added to new_dir, remove the old name.
1336          *
1337          * We don't keep any directory entry context around until now
1338          * because the insert might have changed the type of directory
1339          * we're dealing with.
1340          */
1341         status = ocfs2_find_entry(old_dentry->d_name.name,
1342                                   old_dentry->d_name.len, old_dir,
1343                                   &old_entry_lookup);
1344         if (status)
1345                 goto bail;
1346
1347         status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
1348         if (status < 0) {
1349                 mlog_errno(status);
1350                 goto bail;
1351         }
1352
1353         if (new_inode) {
1354                 new_inode->i_nlink--;
1355                 new_inode->i_ctime = CURRENT_TIME;
1356         }
1357         old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
1358
1359         if (update_dot_dot) {
1360                 status = ocfs2_update_entry(old_inode, handle,
1361                                             &old_inode_dot_dot_res, new_dir);
1362                 old_dir->i_nlink--;
1363                 if (new_inode) {
1364                         new_inode->i_nlink--;
1365                 } else {
1366                         inc_nlink(new_dir);
1367                         mark_inode_dirty(new_dir);
1368                 }
1369         }
1370         mark_inode_dirty(old_dir);
1371         ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1372         if (new_inode) {
1373                 mark_inode_dirty(new_inode);
1374                 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1375         }
1376
1377         if (old_dir != new_dir) {
1378                 /* Keep the same times on both directories.*/
1379                 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1380
1381                 /*
1382                  * This will also pick up the i_nlink change from the
1383                  * block above.
1384                  */
1385                 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1386         }
1387
1388         if (old_dir_nlink != old_dir->i_nlink) {
1389                 if (!old_dir_bh) {
1390                         mlog(ML_ERROR, "need to change nlink for old dir "
1391                              "%llu from %d to %d but bh is NULL!\n",
1392                              (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1393                              (int)old_dir_nlink, old_dir->i_nlink);
1394                 } else {
1395                         struct ocfs2_dinode *fe;
1396                         status = ocfs2_journal_access_di(handle, old_dir,
1397                                                          old_dir_bh,
1398                                                          OCFS2_JOURNAL_ACCESS_WRITE);
1399                         fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
1400                         fe->i_links_count = cpu_to_le16(old_dir->i_nlink);
1401                         status = ocfs2_journal_dirty(handle, old_dir_bh);
1402                 }
1403         }
1404
1405         ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
1406         status = 0;
1407 bail:
1408         if (rename_lock)
1409                 ocfs2_rename_unlock(osb);
1410
1411         if (handle)
1412                 ocfs2_commit_trans(osb, handle);
1413
1414         if (parents_locked)
1415                 ocfs2_double_unlock(old_dir, new_dir);
1416
1417         if (old_child_locked)
1418                 ocfs2_inode_unlock(old_inode, 1);
1419
1420         if (new_child_locked)
1421                 ocfs2_inode_unlock(new_inode, 1);
1422
1423         if (orphan_dir) {
1424                 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1425                 ocfs2_inode_unlock(orphan_dir, 1);
1426                 mutex_unlock(&orphan_dir->i_mutex);
1427                 iput(orphan_dir);
1428         }
1429
1430         if (new_inode)
1431                 sync_mapping_buffers(old_inode->i_mapping);
1432
1433         if (new_inode)
1434                 iput(new_inode);
1435
1436         ocfs2_free_dir_lookup_result(&target_lookup_res);
1437         ocfs2_free_dir_lookup_result(&old_entry_lookup);
1438         ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1439         ocfs2_free_dir_lookup_result(&orphan_insert);
1440         ocfs2_free_dir_lookup_result(&target_insert);
1441
1442         brelse(newfe_bh);
1443         brelse(old_inode_bh);
1444         brelse(old_dir_bh);
1445         brelse(new_dir_bh);
1446         brelse(orphan_entry_bh);
1447         brelse(insert_entry_bh);
1448
1449         mlog_exit(status);
1450
1451         return status;
1452 }
1453
1454 /*
1455  * we expect i_size = strlen(symname). Copy symname into the file
1456  * data, including the null terminator.
1457  */
1458 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
1459                                      handle_t *handle,
1460                                      struct inode *inode,
1461                                      const char *symname)
1462 {
1463         struct buffer_head **bhs = NULL;
1464         const char *c;
1465         struct super_block *sb = osb->sb;
1466         u64 p_blkno, p_blocks;
1467         int virtual, blocks, status, i, bytes_left;
1468
1469         bytes_left = i_size_read(inode) + 1;
1470         /* we can't trust i_blocks because we're actually going to
1471          * write i_size + 1 bytes. */
1472         blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1473
1474         mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n",
1475                         (unsigned long long)inode->i_blocks,
1476                         i_size_read(inode), blocks);
1477
1478         /* Sanity check -- make sure we're going to fit. */
1479         if (bytes_left >
1480             ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1481                 status = -EIO;
1482                 mlog_errno(status);
1483                 goto bail;
1484         }
1485
1486         bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1487         if (!bhs) {
1488                 status = -ENOMEM;
1489                 mlog_errno(status);
1490                 goto bail;
1491         }
1492
1493         status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1494                                              NULL);
1495         if (status < 0) {
1496                 mlog_errno(status);
1497                 goto bail;
1498         }
1499
1500         /* links can never be larger than one cluster so we know this
1501          * is all going to be contiguous, but do a sanity check
1502          * anyway. */
1503         if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1504                 status = -EIO;
1505                 mlog_errno(status);
1506                 goto bail;
1507         }
1508
1509         virtual = 0;
1510         while(bytes_left > 0) {
1511                 c = &symname[virtual * sb->s_blocksize];
1512
1513                 bhs[virtual] = sb_getblk(sb, p_blkno);
1514                 if (!bhs[virtual]) {
1515                         status = -ENOMEM;
1516                         mlog_errno(status);
1517                         goto bail;
1518                 }
1519                 ocfs2_set_new_buffer_uptodate(inode, bhs[virtual]);
1520
1521                 status = ocfs2_journal_access(handle, inode, bhs[virtual],
1522                                               OCFS2_JOURNAL_ACCESS_CREATE);
1523                 if (status < 0) {
1524                         mlog_errno(status);
1525                         goto bail;
1526                 }
1527
1528                 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1529
1530                 memcpy(bhs[virtual]->b_data, c,
1531                        (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1532                        bytes_left);
1533
1534                 status = ocfs2_journal_dirty(handle, bhs[virtual]);
1535                 if (status < 0) {
1536                         mlog_errno(status);
1537                         goto bail;
1538                 }
1539
1540                 virtual++;
1541                 p_blkno++;
1542                 bytes_left -= sb->s_blocksize;
1543         }
1544
1545         status = 0;
1546 bail:
1547
1548         if (bhs) {
1549                 for(i = 0; i < blocks; i++)
1550                         brelse(bhs[i]);
1551                 kfree(bhs);
1552         }
1553
1554         mlog_exit(status);
1555         return status;
1556 }
1557
1558 static int ocfs2_symlink(struct inode *dir,
1559                          struct dentry *dentry,
1560                          const char *symname)
1561 {
1562         int status, l, credits;
1563         u64 newsize;
1564         struct ocfs2_super *osb = NULL;
1565         struct inode *inode = NULL;
1566         struct super_block *sb;
1567         struct buffer_head *new_fe_bh = NULL;
1568         struct buffer_head *parent_fe_bh = NULL;
1569         struct ocfs2_dinode *fe = NULL;
1570         struct ocfs2_dinode *dirfe;
1571         handle_t *handle = NULL;
1572         struct ocfs2_alloc_context *inode_ac = NULL;
1573         struct ocfs2_alloc_context *data_ac = NULL;
1574         struct ocfs2_alloc_context *xattr_ac = NULL;
1575         int want_clusters = 0;
1576         int xattr_credits = 0;
1577         struct ocfs2_security_xattr_info si = {
1578                 .enable = 1,
1579         };
1580         int did_quota = 0, did_quota_inode = 0;
1581         struct ocfs2_dir_lookup_result lookup = { NULL, };
1582
1583         mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
1584                    dentry, symname, dentry->d_name.len, dentry->d_name.name);
1585
1586         sb = dir->i_sb;
1587         osb = OCFS2_SB(sb);
1588
1589         l = strlen(symname) + 1;
1590
1591         credits = ocfs2_calc_symlink_credits(sb);
1592
1593         /* lock the parent directory */
1594         status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
1595         if (status < 0) {
1596                 if (status != -ENOENT)
1597                         mlog_errno(status);
1598                 return status;
1599         }
1600
1601         dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
1602         if (!dirfe->i_links_count) {
1603                 /* can't make a file in a deleted directory. */
1604                 status = -ENOENT;
1605                 goto bail;
1606         }
1607
1608         status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1609                                            dentry->d_name.len);
1610         if (status)
1611                 goto bail;
1612
1613         status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1614                                               dentry->d_name.name,
1615                                               dentry->d_name.len, &lookup);
1616         if (status < 0) {
1617                 mlog_errno(status);
1618                 goto bail;
1619         }
1620
1621         status = ocfs2_reserve_new_inode(osb, &inode_ac);
1622         if (status < 0) {
1623                 if (status != -ENOSPC)
1624                         mlog_errno(status);
1625                 goto bail;
1626         }
1627
1628         inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1629         if (!inode) {
1630                 status = -ENOMEM;
1631                 mlog_errno(status);
1632                 goto bail;
1633         }
1634
1635         /* get security xattr */
1636         status = ocfs2_init_security_get(inode, dir, &si);
1637         if (status) {
1638                 if (status == -EOPNOTSUPP)
1639                         si.enable = 0;
1640                 else {
1641                         mlog_errno(status);
1642                         goto bail;
1643                 }
1644         }
1645
1646         /* calculate meta data/clusters for setting security xattr */
1647         if (si.enable) {
1648                 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1649                                                   &xattr_credits, &xattr_ac);
1650                 if (status < 0) {
1651                         mlog_errno(status);
1652                         goto bail;
1653                 }
1654         }
1655
1656         /* don't reserve bitmap space for fast symlinks. */
1657         if (l > ocfs2_fast_symlink_chars(sb))
1658                 want_clusters += 1;
1659
1660         status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1661         if (status < 0) {
1662                 if (status != -ENOSPC)
1663                         mlog_errno(status);
1664                 goto bail;
1665         }
1666
1667         handle = ocfs2_start_trans(osb, credits + xattr_credits);
1668         if (IS_ERR(handle)) {
1669                 status = PTR_ERR(handle);
1670                 handle = NULL;
1671                 mlog_errno(status);
1672                 goto bail;
1673         }
1674
1675         /* We don't use standard VFS wrapper because we don't want vfs_dq_init
1676          * to be called. */
1677         if (sb_any_quota_active(osb->sb) &&
1678             osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
1679                 status = -EDQUOT;
1680                 goto bail;
1681         }
1682         did_quota_inode = 1;
1683
1684         status = ocfs2_mknod_locked(osb, dir, inode, dentry,
1685                                     0, &new_fe_bh, parent_fe_bh, handle,
1686                                     inode_ac);
1687         if (status < 0) {
1688                 mlog_errno(status);
1689                 goto bail;
1690         }
1691
1692         fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1693         inode->i_rdev = 0;
1694         newsize = l - 1;
1695         if (l > ocfs2_fast_symlink_chars(sb)) {
1696                 u32 offset = 0;
1697
1698                 inode->i_op = &ocfs2_symlink_inode_operations;
1699                 if (vfs_dq_alloc_space_nodirty(inode,
1700                     ocfs2_clusters_to_bytes(osb->sb, 1))) {
1701                         status = -EDQUOT;
1702                         goto bail;
1703                 }
1704                 did_quota = 1;
1705                 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1706                                               new_fe_bh,
1707                                               handle, data_ac, NULL,
1708                                               NULL);
1709                 if (status < 0) {
1710                         if (status != -ENOSPC && status != -EINTR) {
1711                                 mlog(ML_ERROR,
1712                                      "Failed to extend file to %llu\n",
1713                                      (unsigned long long)newsize);
1714                                 mlog_errno(status);
1715                                 status = -ENOSPC;
1716                         }
1717                         goto bail;
1718                 }
1719                 i_size_write(inode, newsize);
1720                 inode->i_blocks = ocfs2_inode_sector_count(inode);
1721         } else {
1722                 inode->i_op = &ocfs2_fast_symlink_inode_operations;
1723                 memcpy((char *) fe->id2.i_symlink, symname, l);
1724                 i_size_write(inode, newsize);
1725                 inode->i_blocks = 0;
1726         }
1727
1728         status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1729         if (status < 0) {
1730                 mlog_errno(status);
1731                 goto bail;
1732         }
1733
1734         if (!ocfs2_inode_is_fast_symlink(inode)) {
1735                 status = ocfs2_create_symlink_data(osb, handle, inode,
1736                                                    symname);
1737                 if (status < 0) {
1738                         mlog_errno(status);
1739                         goto bail;
1740                 }
1741         }
1742
1743         if (si.enable) {
1744                 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1745                                                  xattr_ac, data_ac);
1746                 if (status < 0) {
1747                         mlog_errno(status);
1748                         goto bail;
1749                 }
1750         }
1751
1752         status = ocfs2_add_entry(handle, dentry, inode,
1753                                  le64_to_cpu(fe->i_blkno), parent_fe_bh,
1754                                  &lookup);
1755         if (status < 0) {
1756                 mlog_errno(status);
1757                 goto bail;
1758         }
1759
1760         status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
1761         if (status) {
1762                 mlog_errno(status);
1763                 goto bail;
1764         }
1765
1766         insert_inode_hash(inode);
1767         dentry->d_op = &ocfs2_dentry_ops;
1768         d_instantiate(dentry, inode);
1769 bail:
1770         if (status < 0 && did_quota)
1771                 vfs_dq_free_space_nodirty(inode,
1772                                         ocfs2_clusters_to_bytes(osb->sb, 1));
1773         if (status < 0 && did_quota_inode)
1774                 vfs_dq_free_inode(inode);
1775         if (handle)
1776                 ocfs2_commit_trans(osb, handle);
1777
1778         ocfs2_inode_unlock(dir, 1);
1779
1780         brelse(new_fe_bh);
1781         brelse(parent_fe_bh);
1782         kfree(si.name);
1783         kfree(si.value);
1784         ocfs2_free_dir_lookup_result(&lookup);
1785         if (inode_ac)
1786                 ocfs2_free_alloc_context(inode_ac);
1787         if (data_ac)
1788                 ocfs2_free_alloc_context(data_ac);
1789         if (xattr_ac)
1790                 ocfs2_free_alloc_context(xattr_ac);
1791         if ((status < 0) && inode) {
1792                 clear_nlink(inode);
1793                 iput(inode);
1794         }
1795
1796         mlog_exit(status);
1797
1798         return status;
1799 }
1800
1801 static int ocfs2_blkno_stringify(u64 blkno, char *name)
1802 {
1803         int status, namelen;
1804
1805         mlog_entry_void();
1806
1807         namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
1808                            (long long)blkno);
1809         if (namelen <= 0) {
1810                 if (namelen)
1811                         status = namelen;
1812                 else
1813                         status = -EINVAL;
1814                 mlog_errno(status);
1815                 goto bail;
1816         }
1817         if (namelen != OCFS2_ORPHAN_NAMELEN) {
1818                 status = -EINVAL;
1819                 mlog_errno(status);
1820                 goto bail;
1821         }
1822
1823         mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name,
1824              namelen);
1825
1826         status = 0;
1827 bail:
1828         mlog_exit(status);
1829         return status;
1830 }
1831
1832 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
1833                                     struct inode **ret_orphan_dir,
1834                                     struct inode *inode,
1835                                     char *name,
1836                                     struct ocfs2_dir_lookup_result *lookup)
1837 {
1838         struct inode *orphan_dir_inode;
1839         struct buffer_head *orphan_dir_bh = NULL;
1840         int status = 0;
1841
1842         status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
1843         if (status < 0) {
1844                 mlog_errno(status);
1845                 return status;
1846         }
1847
1848         orphan_dir_inode = ocfs2_get_system_file_inode(osb,
1849                                                        ORPHAN_DIR_SYSTEM_INODE,
1850                                                        osb->slot_num);
1851         if (!orphan_dir_inode) {
1852                 status = -ENOENT;
1853                 mlog_errno(status);
1854                 return status;
1855         }
1856
1857         mutex_lock(&orphan_dir_inode->i_mutex);
1858
1859         status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
1860         if (status < 0) {
1861                 mlog_errno(status);
1862                 goto leave;
1863         }
1864
1865         status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
1866                                               orphan_dir_bh, name,
1867                                               OCFS2_ORPHAN_NAMELEN, lookup);
1868         if (status < 0) {
1869                 ocfs2_inode_unlock(orphan_dir_inode, 1);
1870
1871                 mlog_errno(status);
1872                 goto leave;
1873         }
1874
1875         *ret_orphan_dir = orphan_dir_inode;
1876
1877 leave:
1878         if (status) {
1879                 mutex_unlock(&orphan_dir_inode->i_mutex);
1880                 iput(orphan_dir_inode);
1881         }
1882
1883         brelse(orphan_dir_bh);
1884
1885         mlog_exit(status);
1886         return status;
1887 }
1888
1889 static int ocfs2_orphan_add(struct ocfs2_super *osb,
1890                             handle_t *handle,
1891                             struct inode *inode,
1892                             struct ocfs2_dinode *fe,
1893                             char *name,
1894                             struct ocfs2_dir_lookup_result *lookup,
1895                             struct inode *orphan_dir_inode)
1896 {
1897         struct buffer_head *orphan_dir_bh = NULL;
1898         int status = 0;
1899         struct ocfs2_dinode *orphan_fe;
1900
1901         mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
1902
1903         status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
1904         if (status < 0) {
1905                 mlog_errno(status);
1906                 goto leave;
1907         }
1908
1909         status = ocfs2_journal_access_di(handle, orphan_dir_inode, orphan_dir_bh,
1910                                          OCFS2_JOURNAL_ACCESS_WRITE);
1911         if (status < 0) {
1912                 mlog_errno(status);
1913                 goto leave;
1914         }
1915
1916         /* we're a cluster, and nlink can change on disk from
1917          * underneath us... */
1918         orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
1919         if (S_ISDIR(inode->i_mode))
1920                 le16_add_cpu(&orphan_fe->i_links_count, 1);
1921         orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count);
1922
1923         status = ocfs2_journal_dirty(handle, orphan_dir_bh);
1924         if (status < 0) {
1925                 mlog_errno(status);
1926                 goto leave;
1927         }
1928
1929         status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
1930                                    OCFS2_ORPHAN_NAMELEN, inode,
1931                                    OCFS2_I(inode)->ip_blkno,
1932                                    orphan_dir_bh, lookup);
1933         if (status < 0) {
1934                 mlog_errno(status);
1935                 goto leave;
1936         }
1937
1938         le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL);
1939
1940         /* Record which orphan dir our inode now resides
1941          * in. delete_inode will use this to determine which orphan
1942          * dir to lock. */
1943         fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
1944
1945         mlog(0, "Inode %llu orphaned in slot %d\n",
1946              (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num);
1947
1948 leave:
1949         brelse(orphan_dir_bh);
1950
1951         mlog_exit(status);
1952         return status;
1953 }
1954
1955 /* unlike orphan_add, we expect the orphan dir to already be locked here. */
1956 int ocfs2_orphan_del(struct ocfs2_super *osb,
1957                      handle_t *handle,
1958                      struct inode *orphan_dir_inode,
1959                      struct inode *inode,
1960                      struct buffer_head *orphan_dir_bh)
1961 {
1962         char name[OCFS2_ORPHAN_NAMELEN + 1];
1963         struct ocfs2_dinode *orphan_fe;
1964         int status = 0;
1965         struct ocfs2_dir_lookup_result lookup = { NULL, };
1966
1967         mlog_entry_void();
1968
1969         status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
1970         if (status < 0) {
1971                 mlog_errno(status);
1972                 goto leave;
1973         }
1974
1975         mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n",
1976              name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
1977              OCFS2_ORPHAN_NAMELEN);
1978
1979         /* find it's spot in the orphan directory */
1980         status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
1981                                   &lookup);
1982         if (status) {
1983                 mlog_errno(status);
1984                 goto leave;
1985         }
1986
1987         /* remove it from the orphan directory */
1988         status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
1989         if (status < 0) {
1990                 mlog_errno(status);
1991                 goto leave;
1992         }
1993
1994         status = ocfs2_journal_access_di(handle,orphan_dir_inode,  orphan_dir_bh,
1995                                          OCFS2_JOURNAL_ACCESS_WRITE);
1996         if (status < 0) {
1997                 mlog_errno(status);
1998                 goto leave;
1999         }
2000
2001         /* do the i_nlink dance! :) */
2002         orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2003         if (S_ISDIR(inode->i_mode))
2004                 le16_add_cpu(&orphan_fe->i_links_count, -1);
2005         orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count);
2006
2007         status = ocfs2_journal_dirty(handle, orphan_dir_bh);
2008         if (status < 0) {
2009                 mlog_errno(status);
2010                 goto leave;
2011         }
2012
2013 leave:
2014         ocfs2_free_dir_lookup_result(&lookup);
2015
2016         mlog_exit(status);
2017         return status;
2018 }
2019
2020 const struct inode_operations ocfs2_dir_iops = {
2021         .create         = ocfs2_create,
2022         .lookup         = ocfs2_lookup,
2023         .link           = ocfs2_link,
2024         .unlink         = ocfs2_unlink,
2025         .rmdir          = ocfs2_unlink,
2026         .symlink        = ocfs2_symlink,
2027         .mkdir          = ocfs2_mkdir,
2028         .mknod          = ocfs2_mknod,
2029         .rename         = ocfs2_rename,
2030         .setattr        = ocfs2_setattr,
2031         .getattr        = ocfs2_getattr,
2032         .permission     = ocfs2_permission,
2033         .setxattr       = generic_setxattr,
2034         .getxattr       = generic_getxattr,
2035         .listxattr      = ocfs2_listxattr,
2036         .removexattr    = generic_removexattr,
2037 };