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