fs/hfsplus/inode.c

   1 /*
   2  *  linux/fs/hfsplus/inode.c
   3  *
   4  * Copyright (C) 2001
   5  * Brad Boyer (flar@allandria.com)
   6  * (C) 2003 Ardis Technologies <roman@ardistech.com>
   7  *
   8  * Inode handling routines
   9  */
  10
  11 #include <linux/blkdev.h>
  12 #include <linux/mm.h>
  13 #include <linux/fs.h>
  14 #include <linux/pagemap.h>
  15 #include <linux/mpage.h>
  16 #include <linux/sched.h>
  17 #include <linux/cred.h>
  18 #include <linux/uio.h>
  19
  20 #include "hfsplus_fs.h"
  21 #include "hfsplus_raw.h"
  22 #include "xattr.h"
  23 #include "acl.h"
  24
  25 static int hfsplus_readpage(struct file *file, struct page *page)
  26 {
  27         return block_read_full_page(page, hfsplus_get_block);
  28 }
  29
  30 static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
  31 {
  32         return block_write_full_page(page, hfsplus_get_block, wbc);
  33 }
  34
  35 static void hfsplus_write_failed(struct address_space *mapping, loff_t to)
  36 {
  37         struct inode *inode = mapping->host;
  38
  39         if (to > inode->i_size) {
  40                 truncate_pagecache(inode, inode->i_size);
  41                 hfsplus_file_truncate(inode);
  42         }
  43 }
  44
  45 static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
  46                         loff_t pos, unsigned len, unsigned flags,
  47                         struct page **pagep, void **fsdata)
  48 {
  49         int ret;
  50
  51         *pagep = NULL;
  52         ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
  53                                 hfsplus_get_block,
  54                                 &HFSPLUS_I(mapping->host)->phys_size);
  55         if (unlikely(ret))
  56                 hfsplus_write_failed(mapping, pos + len);
  57
  58         return ret;
  59 }
  60
  61 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
  62 {
  63         return generic_block_bmap(mapping, block, hfsplus_get_block);
  64 }
  65
  66 static int hfsplus_releasepage(struct page *page, gfp_t mask)
  67 {
  68         struct inode *inode = page->mapping->host;
  69         struct super_block *sb = inode->i_sb;
  70         struct hfs_btree *tree;
  71         struct hfs_bnode *node;
  72         u32 nidx;
  73         int i, res = 1;
  74
  75         switch (inode->i_ino) {
  76         case HFSPLUS_EXT_CNID:
  77                 tree = HFSPLUS_SB(sb)->ext_tree;
  78                 break;
  79         case HFSPLUS_CAT_CNID:
  80                 tree = HFSPLUS_SB(sb)->cat_tree;
  81                 break;
  82         case HFSPLUS_ATTR_CNID:
  83                 tree = HFSPLUS_SB(sb)->attr_tree;
  84                 break;
  85         default:
  86                 BUG();
  87                 return 0;
  88         }
  89         if (!tree)
  90                 return 0;
  91         if (tree->node_size >= PAGE_SIZE) {
  92                 nidx = page->index >>
  93                         (tree->node_size_shift - PAGE_SHIFT);
  94                 spin_lock(&tree->hash_lock);
  95                 node = hfs_bnode_findhash(tree, nidx);
  96                 if (!node)
  97                         ;
  98                 else if (atomic_read(&node->refcnt))
  99                         res = 0;
 100                 if (res && node) {
 101                         hfs_bnode_unhash(node);
 102                         hfs_bnode_free(node);
 103                 }
 104                 spin_unlock(&tree->hash_lock);
 105         } else {
 106                 nidx = page->index <<
 107                         (PAGE_SHIFT - tree->node_size_shift);
 108                 i = 1 << (PAGE_SHIFT - tree->node_size_shift);
 109                 spin_lock(&tree->hash_lock);
 110                 do {
 111                         node = hfs_bnode_findhash(tree, nidx++);
 112                         if (!node)
 113                                 continue;
 114                         if (atomic_read(&node->refcnt)) {
 115                                 res = 0;
 116                                 break;
 117                         }
 118                         hfs_bnode_unhash(node);
 119                         hfs_bnode_free(node);
 120                 } while (--i && nidx < tree->node_count);
 121                 spin_unlock(&tree->hash_lock);
 122         }
 123         return res ? try_to_free_buffers(page) : 0;
 124 }
 125
 126 static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 127 {
 128         struct file *file = iocb->ki_filp;
 129         struct address_space *mapping = file->f_mapping;
 130         struct inode *inode = mapping->host;
 131         size_t count = iov_iter_count(iter);
 132         ssize_t ret;
 133
 134         ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block);
 135
 136         /*
 137          * In case of error extending write may have instantiated a few
 138          * blocks outside i_size. Trim these off again.
 139          */
 140         if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
 141                 loff_t isize = i_size_read(inode);
 142                 loff_t end = iocb->ki_pos + count;
 143
 144                 if (end > isize)
 145                         hfsplus_write_failed(mapping, end);
 146         }
 147
 148         return ret;
 149 }
 150
 151 static int hfsplus_writepages(struct address_space *mapping,
 152                               struct writeback_control *wbc)
 153 {
 154         return mpage_writepages(mapping, wbc, hfsplus_get_block);
 155 }
 156
 157 const struct address_space_operations hfsplus_btree_aops = {
 158         .readpage       = hfsplus_readpage,
 159         .writepage      = hfsplus_writepage,
 160         .write_begin    = hfsplus_write_begin,
 161         .write_end      = generic_write_end,
 162         .bmap           = hfsplus_bmap,
 163         .releasepage    = hfsplus_releasepage,
 164 };
 165
 166 const struct address_space_operations hfsplus_aops = {
 167         .readpage       = hfsplus_readpage,
 168         .writepage      = hfsplus_writepage,
 169         .write_begin    = hfsplus_write_begin,
 170         .write_end      = generic_write_end,
 171         .bmap           = hfsplus_bmap,
 172         .direct_IO      = hfsplus_direct_IO,
 173         .writepages     = hfsplus_writepages,
 174 };
 175
 176 const struct dentry_operations hfsplus_dentry_operations = {
 177         .d_hash       = hfsplus_hash_dentry,
 178         .d_compare    = hfsplus_compare_dentry,
 179 };
 180
 181 static void hfsplus_get_perms(struct inode *inode,
 182                 struct hfsplus_perm *perms, int dir)
 183 {
 184         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
 185         u16 mode;
 186
 187         mode = be16_to_cpu(perms->mode);
 188
 189         i_uid_write(inode, be32_to_cpu(perms->owner));
 190         if (!i_uid_read(inode) && !mode)
 191                 inode->i_uid = sbi->uid;
 192
 193         i_gid_write(inode, be32_to_cpu(perms->group));
 194         if (!i_gid_read(inode) && !mode)
 195                 inode->i_gid = sbi->gid;
 196
 197         if (dir) {
 198                 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
 199                 mode |= S_IFDIR;
 200         } else if (!mode)
 201                 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
 202         inode->i_mode = mode;
 203
 204         HFSPLUS_I(inode)->userflags = perms->userflags;
 205         if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
 206                 inode->i_flags |= S_IMMUTABLE;
 207         else
 208                 inode->i_flags &= ~S_IMMUTABLE;
 209         if (perms->rootflags & HFSPLUS_FLG_APPEND)
 210                 inode->i_flags |= S_APPEND;
 211         else
 212                 inode->i_flags &= ~S_APPEND;
 213 }
 214
 215 static int hfsplus_file_open(struct inode *inode, struct file *file)
 216 {
 217         if (HFSPLUS_IS_RSRC(inode))
 218                 inode = HFSPLUS_I(inode)->rsrc_inode;
 219         if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
 220                 return -EOVERFLOW;
 221         atomic_inc(&HFSPLUS_I(inode)->opencnt);
 222         return 0;
 223 }
 224
 225 static int hfsplus_file_release(struct inode *inode, struct file *file)
 226 {
 227         struct super_block *sb = inode->i_sb;
 228
 229         if (HFSPLUS_IS_RSRC(inode))
 230                 inode = HFSPLUS_I(inode)->rsrc_inode;
 231         if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
 232                 inode_lock(inode);
 233                 hfsplus_file_truncate(inode);
 234                 if (inode->i_flags & S_DEAD) {
 235                         hfsplus_delete_cat(inode->i_ino,
 236                                            HFSPLUS_SB(sb)->hidden_dir, NULL);
 237                         hfsplus_delete_inode(inode);
 238                 }
 239                 inode_unlock(inode);
 240         }
 241         return 0;
 242 }
 243
 244 static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
 245 {
 246         struct inode *inode = d_inode(dentry);
 247         int error;
 248
 249         error = setattr_prepare(dentry, attr);
 250         if (error)
 251                 return error;
 252
 253         if ((attr->ia_valid & ATTR_SIZE) &&
 254             attr->ia_size != i_size_read(inode)) {
 255                 inode_dio_wait(inode);
 256                 if (attr->ia_size > inode->i_size) {
 257                         error = generic_cont_expand_simple(inode,
 258                                                            attr->ia_size);
 259                         if (error)
 260                                 return error;
 261                 }
 262                 truncate_setsize(inode, attr->ia_size);
 263                 hfsplus_file_truncate(inode);
 264         }
 265
 266         setattr_copy(inode, attr);
 267         mark_inode_dirty(inode);
 268
 269         if (attr->ia_valid & ATTR_MODE) {
 270                 error = posix_acl_chmod(inode, inode->i_mode);
 271                 if (unlikely(error))
 272                         return error;
 273         }
 274
 275         return 0;
 276 }
 277
 278 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
 279                        int datasync)
 280 {
 281         struct inode *inode = file->f_mapping->host;
 282         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 283         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
 284         int error = 0, error2;
 285
 286         error = filemap_write_and_wait_range(inode->i_mapping, start, end);
 287         if (error)
 288                 return error;
 289         inode_lock(inode);
 290
 291         /*
 292          * Sync inode metadata into the catalog and extent trees.
 293          */
 294         sync_inode_metadata(inode, 1);
 295
 296         /*
 297          * And explicitly write out the btrees.
 298          */
 299         if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
 300                 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
 301
 302         if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
 303                 error2 =
 304                         filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
 305                 if (!error)
 306                         error = error2;
 307         }
 308
 309         if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) {
 310                 if (sbi->attr_tree) {
 311                         error2 =
 312                                 filemap_write_and_wait(
 313                                             sbi->attr_tree->inode->i_mapping);
 314                         if (!error)
 315                                 error = error2;
 316                 } else {
 317                         pr_err("sync non-existent attributes tree\n");
 318                 }
 319         }
 320
 321         if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
 322                 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
 323                 if (!error)
 324                         error = error2;
 325         }
 326
 327         if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
 328                 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
 329
 330         inode_unlock(inode);
 331
 332         return error;
 333 }
 334
 335 static const struct inode_operations hfsplus_file_inode_operations = {
 336         .setattr        = hfsplus_setattr,
 337         .listxattr      = hfsplus_listxattr,
 338 #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL
 339         .get_acl        = hfsplus_get_posix_acl,
 340         .set_acl        = hfsplus_set_posix_acl,
 341 #endif
 342 };
 343
 344 static const struct file_operations hfsplus_file_operations = {
 345         .llseek         = generic_file_llseek,
 346         .read_iter      = generic_file_read_iter,
 347         .write_iter     = generic_file_write_iter,
 348         .mmap           = generic_file_mmap,
 349         .splice_read    = generic_file_splice_read,
 350         .fsync          = hfsplus_file_fsync,
 351         .open           = hfsplus_file_open,
 352         .release        = hfsplus_file_release,
 353         .unlocked_ioctl = hfsplus_ioctl,
 354 };
 355
 356 struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
 357 {
 358         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 359         struct inode *inode = new_inode(sb);
 360         struct hfsplus_inode_info *hip;
 361
 362         if (!inode)
 363                 return NULL;
 364
 365         inode->i_ino = sbi->next_cnid++;
 366         inode->i_mode = mode;
 367         inode->i_uid = current_fsuid();
 368         inode->i_gid = current_fsgid();
 369         set_nlink(inode, 1);
 370         inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
 371
 372         hip = HFSPLUS_I(inode);
 373         INIT_LIST_HEAD(&hip->open_dir_list);
 374         spin_lock_init(&hip->open_dir_lock);
 375         mutex_init(&hip->extents_lock);
 376         atomic_set(&hip->opencnt, 0);
 377         hip->extent_state = 0;
 378         hip->flags = 0;
 379         hip->userflags = 0;
 380         hip->subfolders = 0;
 381         memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
 382         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
 383         hip->alloc_blocks = 0;
 384         hip->first_blocks = 0;
 385         hip->cached_start = 0;
 386         hip->cached_blocks = 0;
 387         hip->phys_size = 0;
 388         hip->fs_blocks = 0;
 389         hip->rsrc_inode = NULL;
 390         if (S_ISDIR(inode->i_mode)) {
 391                 inode->i_size = 2;
 392                 sbi->folder_count++;
 393                 inode->i_op = &hfsplus_dir_inode_operations;
 394                 inode->i_fop = &hfsplus_dir_operations;
 395         } else if (S_ISREG(inode->i_mode)) {
 396                 sbi->file_count++;
 397                 inode->i_op = &hfsplus_file_inode_operations;
 398                 inode->i_fop = &hfsplus_file_operations;
 399                 inode->i_mapping->a_ops = &hfsplus_aops;
 400                 hip->clump_blocks = sbi->data_clump_blocks;
 401         } else if (S_ISLNK(inode->i_mode)) {
 402                 sbi->file_count++;
 403                 inode->i_op = &page_symlink_inode_operations;
 404                 inode_nohighmem(inode);
 405                 inode->i_mapping->a_ops = &hfsplus_aops;
 406                 hip->clump_blocks = 1;
 407         } else
 408                 sbi->file_count++;
 409         insert_inode_hash(inode);
 410         mark_inode_dirty(inode);
 411         hfsplus_mark_mdb_dirty(sb);
 412
 413         return inode;
 414 }
 415
 416 void hfsplus_delete_inode(struct inode *inode)
 417 {
 418         struct super_block *sb = inode->i_sb;
 419
 420         if (S_ISDIR(inode->i_mode)) {
 421                 HFSPLUS_SB(sb)->folder_count--;
 422                 hfsplus_mark_mdb_dirty(sb);
 423                 return;
 424         }
 425         HFSPLUS_SB(sb)->file_count--;
 426         if (S_ISREG(inode->i_mode)) {
 427                 if (!inode->i_nlink) {
 428                         inode->i_size = 0;
 429                         hfsplus_file_truncate(inode);
 430                 }
 431         } else if (S_ISLNK(inode->i_mode)) {
 432                 inode->i_size = 0;
 433                 hfsplus_file_truncate(inode);
 434         }
 435         hfsplus_mark_mdb_dirty(sb);
 436 }
 437
 438 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 439 {
 440         struct super_block *sb = inode->i_sb;
 441         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 442         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 443         u32 count;
 444         int i;
 445
 446         memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
 447         for (count = 0, i = 0; i < 8; i++)
 448                 count += be32_to_cpu(fork->extents[i].block_count);
 449         hip->first_blocks = count;
 450         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
 451         hip->cached_start = 0;
 452         hip->cached_blocks = 0;
 453
 454         hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
 455         hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
 456         hip->fs_blocks =
 457                 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
 458         inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
 459         hip->clump_blocks =
 460                 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
 461         if (!hip->clump_blocks) {
 462                 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
 463                         sbi->rsrc_clump_blocks :
 464                         sbi->data_clump_blocks;
 465         }
 466 }
 467
 468 void hfsplus_inode_write_fork(struct inode *inode,
 469                 struct hfsplus_fork_raw *fork)
 470 {
 471         memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
 472                sizeof(hfsplus_extent_rec));
 473         fork->total_size = cpu_to_be64(inode->i_size);
 474         fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
 475 }
 476
 477 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 478 {
 479         hfsplus_cat_entry entry;
 480         int res = 0;
 481         u16 type;
 482
 483         type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
 484
 485         HFSPLUS_I(inode)->linkid = 0;
 486         if (type == HFSPLUS_FOLDER) {
 487                 struct hfsplus_cat_folder *folder = &entry.folder;
 488
 489                 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
 490                         /* panic? */;
 491                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 492                                         sizeof(struct hfsplus_cat_folder));
 493                 hfsplus_get_perms(inode, &folder->permissions, 1);
 494                 set_nlink(inode, 1);
 495                 inode->i_size = 2 + be32_to_cpu(folder->valence);
 496                 inode->i_atime = hfsp_mt2ut(folder->access_date);
 497                 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
 498                 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
 499                 HFSPLUS_I(inode)->create_date = folder->create_date;
 500                 HFSPLUS_I(inode)->fs_blocks = 0;
 501                 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
 502                         HFSPLUS_I(inode)->subfolders =
 503                                 be32_to_cpu(folder->subfolders);
 504                 }
 505                 inode->i_op = &hfsplus_dir_inode_operations;
 506                 inode->i_fop = &hfsplus_dir_operations;
 507         } else if (type == HFSPLUS_FILE) {
 508                 struct hfsplus_cat_file *file = &entry.file;
 509
 510                 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
 511                         /* panic? */;
 512                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 513                                         sizeof(struct hfsplus_cat_file));
 514
 515                 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
 516                                         &file->rsrc_fork : &file->data_fork);
 517                 hfsplus_get_perms(inode, &file->permissions, 0);
 518                 set_nlink(inode, 1);
 519                 if (S_ISREG(inode->i_mode)) {
 520                         if (file->permissions.dev)
 521                                 set_nlink(inode,
 522                                           be32_to_cpu(file->permissions.dev));
 523                         inode->i_op = &hfsplus_file_inode_operations;
 524                         inode->i_fop = &hfsplus_file_operations;
 525                         inode->i_mapping->a_ops = &hfsplus_aops;
 526                 } else if (S_ISLNK(inode->i_mode)) {
 527                         inode->i_op = &page_symlink_inode_operations;
 528                         inode_nohighmem(inode);
 529                         inode->i_mapping->a_ops = &hfsplus_aops;
 530                 } else {
 531                         init_special_inode(inode, inode->i_mode,
 532                                            be32_to_cpu(file->permissions.dev));
 533                 }
 534                 inode->i_atime = hfsp_mt2ut(file->access_date);
 535                 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
 536                 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
 537                 HFSPLUS_I(inode)->create_date = file->create_date;
 538         } else {
 539                 pr_err("bad catalog entry used to create inode\n");
 540                 res = -EIO;
 541         }
 542         return res;
 543 }
 544
 545 int hfsplus_cat_write_inode(struct inode *inode)
 546 {
 547         struct inode *main_inode = inode;
 548         struct hfs_find_data fd;
 549         hfsplus_cat_entry entry;
 550
 551         if (HFSPLUS_IS_RSRC(inode))
 552                 main_inode = HFSPLUS_I(inode)->rsrc_inode;
 553
 554         if (!main_inode->i_nlink)
 555                 return 0;
 556
 557         if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
 558                 /* panic? */
 559                 return -EIO;
 560
 561         if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
 562                 /* panic? */
 563                 goto out;
 564
 565         if (S_ISDIR(main_inode->i_mode)) {
 566                 struct hfsplus_cat_folder *folder = &entry.folder;
 567
 568                 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
 569                         /* panic? */;
 570                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 571                                         sizeof(struct hfsplus_cat_folder));
 572                 /* simple node checks? */
 573                 hfsplus_cat_set_perms(inode, &folder->permissions);
 574                 folder->access_date = hfsp_ut2mt(inode->i_atime);
 575                 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 576                 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 577                 folder->valence = cpu_to_be32(inode->i_size - 2);
 578                 if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) {
 579                         folder->subfolders =
 580                                 cpu_to_be32(HFSPLUS_I(inode)->subfolders);
 581                 }
 582                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 583                                          sizeof(struct hfsplus_cat_folder));
 584         } else if (HFSPLUS_IS_RSRC(inode)) {
 585                 struct hfsplus_cat_file *file = &entry.file;
 586                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 587                                sizeof(struct hfsplus_cat_file));
 588                 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
 589                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 590                                 sizeof(struct hfsplus_cat_file));
 591         } else {
 592                 struct hfsplus_cat_file *file = &entry.file;
 593
 594                 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
 595                         /* panic? */;
 596                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 597                                         sizeof(struct hfsplus_cat_file));
 598                 hfsplus_inode_write_fork(inode, &file->data_fork);
 599                 hfsplus_cat_set_perms(inode, &file->permissions);
 600                 if (HFSPLUS_FLG_IMMUTABLE &
 601                                 (file->permissions.rootflags |
 602                                         file->permissions.userflags))
 603                         file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
 604                 else
 605                         file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
 606                 file->access_date = hfsp_ut2mt(inode->i_atime);
 607                 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 608                 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 609                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 610                                          sizeof(struct hfsplus_cat_file));
 611         }
 612
 613         set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
 614 out:
 615         hfs_find_exit(&fd);
 616         return 0;
 617 }