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
  18 #include "hfsplus_fs.h"
  19 #include "hfsplus_raw.h"
  20
  21 static int hfsplus_readpage(struct file *file, struct page *page)
  22 {
  23         return block_read_full_page(page, hfsplus_get_block);
  24 }
  25
  26 static int hfsplus_writepage(struct page *page, struct writeback_control *wbc)
  27 {
  28         return block_write_full_page(page, hfsplus_get_block, wbc);
  29 }
  30
  31 static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
  32                         loff_t pos, unsigned len, unsigned flags,
  33                         struct page **pagep, void **fsdata)
  34 {
  35         int ret;
  36
  37         *pagep = NULL;
  38         ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
  39                                 hfsplus_get_block,
  40                                 &HFSPLUS_I(mapping->host)->phys_size);
  41         if (unlikely(ret)) {
  42                 loff_t isize = mapping->host->i_size;
  43                 if (pos + len > isize)
  44                         vmtruncate(mapping->host, isize);
  45         }
  46
  47         return ret;
  48 }
  49
  50 static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block)
  51 {
  52         return generic_block_bmap(mapping, block, hfsplus_get_block);
  53 }
  54
  55 static int hfsplus_releasepage(struct page *page, gfp_t mask)
  56 {
  57         struct inode *inode = page->mapping->host;
  58         struct super_block *sb = inode->i_sb;
  59         struct hfs_btree *tree;
  60         struct hfs_bnode *node;
  61         u32 nidx;
  62         int i, res = 1;
  63
  64         switch (inode->i_ino) {
  65         case HFSPLUS_EXT_CNID:
  66                 tree = HFSPLUS_SB(sb)->ext_tree;
  67                 break;
  68         case HFSPLUS_CAT_CNID:
  69                 tree = HFSPLUS_SB(sb)->cat_tree;
  70                 break;
  71         case HFSPLUS_ATTR_CNID:
  72                 tree = HFSPLUS_SB(sb)->attr_tree;
  73                 break;
  74         default:
  75                 BUG();
  76                 return 0;
  77         }
  78         if (!tree)
  79                 return 0;
  80         if (tree->node_size >= PAGE_CACHE_SIZE) {
  81                 nidx = page->index >>
  82                         (tree->node_size_shift - PAGE_CACHE_SHIFT);
  83                 spin_lock(&tree->hash_lock);
  84                 node = hfs_bnode_findhash(tree, nidx);
  85                 if (!node)
  86                         ;
  87                 else if (atomic_read(&node->refcnt))
  88                         res = 0;
  89                 if (res && node) {
  90                         hfs_bnode_unhash(node);
  91                         hfs_bnode_free(node);
  92                 }
  93                 spin_unlock(&tree->hash_lock);
  94         } else {
  95                 nidx = page->index <<
  96                         (PAGE_CACHE_SHIFT - tree->node_size_shift);
  97                 i = 1 << (PAGE_CACHE_SHIFT - tree->node_size_shift);
  98                 spin_lock(&tree->hash_lock);
  99                 do {
 100                         node = hfs_bnode_findhash(tree, nidx++);
 101                         if (!node)
 102                                 continue;
 103                         if (atomic_read(&node->refcnt)) {
 104                                 res = 0;
 105                                 break;
 106                         }
 107                         hfs_bnode_unhash(node);
 108                         hfs_bnode_free(node);
 109                 } while (--i && nidx < tree->node_count);
 110                 spin_unlock(&tree->hash_lock);
 111         }
 112         return res ? try_to_free_buffers(page) : 0;
 113 }
 114
 115 static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
 116                 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
 117 {
 118         struct file *file = iocb->ki_filp;
 119         struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
 120         ssize_t ret;
 121
 122         ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
 123                                  hfsplus_get_block);
 124
 125         /*
 126          * In case of error extending write may have instantiated a few
 127          * blocks outside i_size. Trim these off again.
 128          */
 129         if (unlikely((rw & WRITE) && ret < 0)) {
 130                 loff_t isize = i_size_read(inode);
 131                 loff_t end = offset + iov_length(iov, nr_segs);
 132
 133                 if (end > isize)
 134                         vmtruncate(inode, isize);
 135         }
 136
 137         return ret;
 138 }
 139
 140 static int hfsplus_writepages(struct address_space *mapping,
 141                               struct writeback_control *wbc)
 142 {
 143         return mpage_writepages(mapping, wbc, hfsplus_get_block);
 144 }
 145
 146 const struct address_space_operations hfsplus_btree_aops = {
 147         .readpage       = hfsplus_readpage,
 148         .writepage      = hfsplus_writepage,
 149         .write_begin    = hfsplus_write_begin,
 150         .write_end      = generic_write_end,
 151         .bmap           = hfsplus_bmap,
 152         .releasepage    = hfsplus_releasepage,
 153 };
 154
 155 const struct address_space_operations hfsplus_aops = {
 156         .readpage       = hfsplus_readpage,
 157         .writepage      = hfsplus_writepage,
 158         .write_begin    = hfsplus_write_begin,
 159         .write_end      = generic_write_end,
 160         .bmap           = hfsplus_bmap,
 161         .direct_IO      = hfsplus_direct_IO,
 162         .writepages     = hfsplus_writepages,
 163 };
 164
 165 const struct dentry_operations hfsplus_dentry_operations = {
 166         .d_hash       = hfsplus_hash_dentry,
 167         .d_compare    = hfsplus_compare_dentry,
 168 };
 169
 170 static struct dentry *hfsplus_file_lookup(struct inode *dir,
 171                 struct dentry *dentry, struct nameidata *nd)
 172 {
 173         struct hfs_find_data fd;
 174         struct super_block *sb = dir->i_sb;
 175         struct inode *inode = NULL;
 176         struct hfsplus_inode_info *hip;
 177         int err;
 178
 179         if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
 180                 goto out;
 181
 182         inode = HFSPLUS_I(dir)->rsrc_inode;
 183         if (inode)
 184                 goto out;
 185
 186         inode = new_inode(sb);
 187         if (!inode)
 188                 return ERR_PTR(-ENOMEM);
 189
 190         hip = HFSPLUS_I(inode);
 191         inode->i_ino = dir->i_ino;
 192         INIT_LIST_HEAD(&hip->open_dir_list);
 193         mutex_init(&hip->extents_lock);
 194         hip->extent_state = 0;
 195         hip->flags = 0;
 196         hip->userflags = 0;
 197         set_bit(HFSPLUS_I_RSRC, &hip->flags);
 198
 199         err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
 200         if (!err) {
 201                 err = hfsplus_find_cat(sb, dir->i_ino, &fd);
 202                 if (!err)
 203                         err = hfsplus_cat_read_inode(inode, &fd);
 204                 hfs_find_exit(&fd);
 205         }
 206         if (err) {
 207                 iput(inode);
 208                 return ERR_PTR(err);
 209         }
 210         hip->rsrc_inode = dir;
 211         HFSPLUS_I(dir)->rsrc_inode = inode;
 212         igrab(dir);
 213
 214         /*
 215          * __mark_inode_dirty expects inodes to be hashed.  Since we don't
 216          * want resource fork inodes in the regular inode space, we make them
 217          * appear hashed, but do not put on any lists.  hlist_del()
 218          * will work fine and require no locking.
 219          */
 220         hlist_add_fake(&inode->i_hash);
 221
 222         mark_inode_dirty(inode);
 223 out:
 224         d_add(dentry, inode);
 225         return NULL;
 226 }
 227
 228 static void hfsplus_get_perms(struct inode *inode,
 229                 struct hfsplus_perm *perms, int dir)
 230 {
 231         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
 232         u16 mode;
 233
 234         mode = be16_to_cpu(perms->mode);
 235
 236         inode->i_uid = be32_to_cpu(perms->owner);
 237         if (!inode->i_uid && !mode)
 238                 inode->i_uid = sbi->uid;
 239
 240         inode->i_gid = be32_to_cpu(perms->group);
 241         if (!inode->i_gid && !mode)
 242                 inode->i_gid = sbi->gid;
 243
 244         if (dir) {
 245                 mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
 246                 mode |= S_IFDIR;
 247         } else if (!mode)
 248                 mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
 249         inode->i_mode = mode;
 250
 251         HFSPLUS_I(inode)->userflags = perms->userflags;
 252         if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
 253                 inode->i_flags |= S_IMMUTABLE;
 254         else
 255                 inode->i_flags &= ~S_IMMUTABLE;
 256         if (perms->rootflags & HFSPLUS_FLG_APPEND)
 257                 inode->i_flags |= S_APPEND;
 258         else
 259                 inode->i_flags &= ~S_APPEND;
 260 }
 261
 262 static int hfsplus_file_open(struct inode *inode, struct file *file)
 263 {
 264         if (HFSPLUS_IS_RSRC(inode))
 265                 inode = HFSPLUS_I(inode)->rsrc_inode;
 266         if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
 267                 return -EOVERFLOW;
 268         atomic_inc(&HFSPLUS_I(inode)->opencnt);
 269         return 0;
 270 }
 271
 272 static int hfsplus_file_release(struct inode *inode, struct file *file)
 273 {
 274         struct super_block *sb = inode->i_sb;
 275
 276         if (HFSPLUS_IS_RSRC(inode))
 277                 inode = HFSPLUS_I(inode)->rsrc_inode;
 278         if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
 279                 mutex_lock(&inode->i_mutex);
 280                 hfsplus_file_truncate(inode);
 281                 if (inode->i_flags & S_DEAD) {
 282                         hfsplus_delete_cat(inode->i_ino,
 283                                            HFSPLUS_SB(sb)->hidden_dir, NULL);
 284                         hfsplus_delete_inode(inode);
 285                 }
 286                 mutex_unlock(&inode->i_mutex);
 287         }
 288         return 0;
 289 }
 290
 291 static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr)
 292 {
 293         struct inode *inode = dentry->d_inode;
 294         int error;
 295
 296         error = inode_change_ok(inode, attr);
 297         if (error)
 298                 return error;
 299
 300         if ((attr->ia_valid & ATTR_SIZE) &&
 301             attr->ia_size != i_size_read(inode)) {
 302                 inode_dio_wait(inode);
 303
 304                 error = vmtruncate(inode, attr->ia_size);
 305                 if (error)
 306                         return error;
 307         }
 308
 309         setattr_copy(inode, attr);
 310         mark_inode_dirty(inode);
 311         return 0;
 312 }
 313
 314 int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
 315                        int datasync)
 316 {
 317         struct inode *inode = file->f_mapping->host;
 318         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 319         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
 320         int error = 0, error2;
 321
 322         error = filemap_write_and_wait_range(inode->i_mapping, start, end);
 323         if (error)
 324                 return error;
 325         mutex_lock(&inode->i_mutex);
 326
 327         /*
 328          * Sync inode metadata into the catalog and extent trees.
 329          */
 330         sync_inode_metadata(inode, 1);
 331
 332         /*
 333          * And explicitly write out the btrees.
 334          */
 335         if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags))
 336                 error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
 337
 338         if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) {
 339                 error2 =
 340                         filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
 341                 if (!error)
 342                         error = error2;
 343         }
 344
 345         if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) {
 346                 error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
 347                 if (!error)
 348                         error = error2;
 349         }
 350
 351         if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
 352                 blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
 353
 354         mutex_unlock(&inode->i_mutex);
 355
 356         return error;
 357 }
 358
 359 static const struct inode_operations hfsplus_file_inode_operations = {
 360         .lookup         = hfsplus_file_lookup,
 361         .truncate       = hfsplus_file_truncate,
 362         .setattr        = hfsplus_setattr,
 363         .setxattr       = hfsplus_setxattr,
 364         .getxattr       = hfsplus_getxattr,
 365         .listxattr      = hfsplus_listxattr,
 366 };
 367
 368 static const struct file_operations hfsplus_file_operations = {
 369         .llseek         = generic_file_llseek,
 370         .read           = do_sync_read,
 371         .aio_read       = generic_file_aio_read,
 372         .write          = do_sync_write,
 373         .aio_write      = generic_file_aio_write,
 374         .mmap           = generic_file_mmap,
 375         .splice_read    = generic_file_splice_read,
 376         .fsync          = hfsplus_file_fsync,
 377         .open           = hfsplus_file_open,
 378         .release        = hfsplus_file_release,
 379         .unlocked_ioctl = hfsplus_ioctl,
 380 };
 381
 382 struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
 383 {
 384         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 385         struct inode *inode = new_inode(sb);
 386         struct hfsplus_inode_info *hip;
 387
 388         if (!inode)
 389                 return NULL;
 390
 391         inode->i_ino = sbi->next_cnid++;
 392         inode->i_mode = mode;
 393         inode->i_uid = current_fsuid();
 394         inode->i_gid = current_fsgid();
 395         set_nlink(inode, 1);
 396         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 397
 398         hip = HFSPLUS_I(inode);
 399         INIT_LIST_HEAD(&hip->open_dir_list);
 400         mutex_init(&hip->extents_lock);
 401         atomic_set(&hip->opencnt, 0);
 402         hip->extent_state = 0;
 403         hip->flags = 0;
 404         hip->userflags = 0;
 405         memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
 406         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
 407         hip->alloc_blocks = 0;
 408         hip->first_blocks = 0;
 409         hip->cached_start = 0;
 410         hip->cached_blocks = 0;
 411         hip->phys_size = 0;
 412         hip->fs_blocks = 0;
 413         hip->rsrc_inode = NULL;
 414         if (S_ISDIR(inode->i_mode)) {
 415                 inode->i_size = 2;
 416                 sbi->folder_count++;
 417                 inode->i_op = &hfsplus_dir_inode_operations;
 418                 inode->i_fop = &hfsplus_dir_operations;
 419         } else if (S_ISREG(inode->i_mode)) {
 420                 sbi->file_count++;
 421                 inode->i_op = &hfsplus_file_inode_operations;
 422                 inode->i_fop = &hfsplus_file_operations;
 423                 inode->i_mapping->a_ops = &hfsplus_aops;
 424                 hip->clump_blocks = sbi->data_clump_blocks;
 425         } else if (S_ISLNK(inode->i_mode)) {
 426                 sbi->file_count++;
 427                 inode->i_op = &page_symlink_inode_operations;
 428                 inode->i_mapping->a_ops = &hfsplus_aops;
 429                 hip->clump_blocks = 1;
 430         } else
 431                 sbi->file_count++;
 432         insert_inode_hash(inode);
 433         mark_inode_dirty(inode);
 434         sb->s_dirt = 1;
 435
 436         return inode;
 437 }
 438
 439 void hfsplus_delete_inode(struct inode *inode)
 440 {
 441         struct super_block *sb = inode->i_sb;
 442
 443         if (S_ISDIR(inode->i_mode)) {
 444                 HFSPLUS_SB(sb)->folder_count--;
 445                 sb->s_dirt = 1;
 446                 return;
 447         }
 448         HFSPLUS_SB(sb)->file_count--;
 449         if (S_ISREG(inode->i_mode)) {
 450                 if (!inode->i_nlink) {
 451                         inode->i_size = 0;
 452                         hfsplus_file_truncate(inode);
 453                 }
 454         } else if (S_ISLNK(inode->i_mode)) {
 455                 inode->i_size = 0;
 456                 hfsplus_file_truncate(inode);
 457         }
 458         sb->s_dirt = 1;
 459 }
 460
 461 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 462 {
 463         struct super_block *sb = inode->i_sb;
 464         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 465         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 466         u32 count;
 467         int i;
 468
 469         memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
 470         for (count = 0, i = 0; i < 8; i++)
 471                 count += be32_to_cpu(fork->extents[i].block_count);
 472         hip->first_blocks = count;
 473         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
 474         hip->cached_start = 0;
 475         hip->cached_blocks = 0;
 476
 477         hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
 478         hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
 479         hip->fs_blocks =
 480                 (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
 481         inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
 482         hip->clump_blocks =
 483                 be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
 484         if (!hip->clump_blocks) {
 485                 hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
 486                         sbi->rsrc_clump_blocks :
 487                         sbi->data_clump_blocks;
 488         }
 489 }
 490
 491 void hfsplus_inode_write_fork(struct inode *inode,
 492                 struct hfsplus_fork_raw *fork)
 493 {
 494         memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
 495                sizeof(hfsplus_extent_rec));
 496         fork->total_size = cpu_to_be64(inode->i_size);
 497         fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
 498 }
 499
 500 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 501 {
 502         hfsplus_cat_entry entry;
 503         int res = 0;
 504         u16 type;
 505
 506         type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
 507
 508         HFSPLUS_I(inode)->linkid = 0;
 509         if (type == HFSPLUS_FOLDER) {
 510                 struct hfsplus_cat_folder *folder = &entry.folder;
 511
 512                 if (fd->entrylength < sizeof(struct hfsplus_cat_folder))
 513                         /* panic? */;
 514                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 515                                         sizeof(struct hfsplus_cat_folder));
 516                 hfsplus_get_perms(inode, &folder->permissions, 1);
 517                 set_nlink(inode, 1);
 518                 inode->i_size = 2 + be32_to_cpu(folder->valence);
 519                 inode->i_atime = hfsp_mt2ut(folder->access_date);
 520                 inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
 521                 inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
 522                 HFSPLUS_I(inode)->create_date = folder->create_date;
 523                 HFSPLUS_I(inode)->fs_blocks = 0;
 524                 inode->i_op = &hfsplus_dir_inode_operations;
 525                 inode->i_fop = &hfsplus_dir_operations;
 526         } else if (type == HFSPLUS_FILE) {
 527                 struct hfsplus_cat_file *file = &entry.file;
 528
 529                 if (fd->entrylength < sizeof(struct hfsplus_cat_file))
 530                         /* panic? */;
 531                 hfs_bnode_read(fd->bnode, &entry, fd->entryoffset,
 532                                         sizeof(struct hfsplus_cat_file));
 533
 534                 hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ?
 535                                         &file->rsrc_fork : &file->data_fork);
 536                 hfsplus_get_perms(inode, &file->permissions, 0);
 537                 set_nlink(inode, 1);
 538                 if (S_ISREG(inode->i_mode)) {
 539                         if (file->permissions.dev)
 540                                 set_nlink(inode,
 541                                           be32_to_cpu(file->permissions.dev));
 542                         inode->i_op = &hfsplus_file_inode_operations;
 543                         inode->i_fop = &hfsplus_file_operations;
 544                         inode->i_mapping->a_ops = &hfsplus_aops;
 545                 } else if (S_ISLNK(inode->i_mode)) {
 546                         inode->i_op = &page_symlink_inode_operations;
 547                         inode->i_mapping->a_ops = &hfsplus_aops;
 548                 } else {
 549                         init_special_inode(inode, inode->i_mode,
 550                                            be32_to_cpu(file->permissions.dev));
 551                 }
 552                 inode->i_atime = hfsp_mt2ut(file->access_date);
 553                 inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
 554                 inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
 555                 HFSPLUS_I(inode)->create_date = file->create_date;
 556         } else {
 557                 printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
 558                 res = -EIO;
 559         }
 560         return res;
 561 }
 562
 563 int hfsplus_cat_write_inode(struct inode *inode)
 564 {
 565         struct inode *main_inode = inode;
 566         struct hfs_find_data fd;
 567         hfsplus_cat_entry entry;
 568
 569         if (HFSPLUS_IS_RSRC(inode))
 570                 main_inode = HFSPLUS_I(inode)->rsrc_inode;
 571
 572         if (!main_inode->i_nlink)
 573                 return 0;
 574
 575         if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
 576                 /* panic? */
 577                 return -EIO;
 578
 579         if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd))
 580                 /* panic? */
 581                 goto out;
 582
 583         if (S_ISDIR(main_inode->i_mode)) {
 584                 struct hfsplus_cat_folder *folder = &entry.folder;
 585
 586                 if (fd.entrylength < sizeof(struct hfsplus_cat_folder))
 587                         /* panic? */;
 588                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 589                                         sizeof(struct hfsplus_cat_folder));
 590                 /* simple node checks? */
 591                 hfsplus_cat_set_perms(inode, &folder->permissions);
 592                 folder->access_date = hfsp_ut2mt(inode->i_atime);
 593                 folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 594                 folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 595                 folder->valence = cpu_to_be32(inode->i_size - 2);
 596                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 597                                          sizeof(struct hfsplus_cat_folder));
 598         } else if (HFSPLUS_IS_RSRC(inode)) {
 599                 struct hfsplus_cat_file *file = &entry.file;
 600                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 601                                sizeof(struct hfsplus_cat_file));
 602                 hfsplus_inode_write_fork(inode, &file->rsrc_fork);
 603                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 604                                 sizeof(struct hfsplus_cat_file));
 605         } else {
 606                 struct hfsplus_cat_file *file = &entry.file;
 607
 608                 if (fd.entrylength < sizeof(struct hfsplus_cat_file))
 609                         /* panic? */;
 610                 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
 611                                         sizeof(struct hfsplus_cat_file));
 612                 hfsplus_inode_write_fork(inode, &file->data_fork);
 613                 hfsplus_cat_set_perms(inode, &file->permissions);
 614                 if (HFSPLUS_FLG_IMMUTABLE &
 615                                 (file->permissions.rootflags |
 616                                         file->permissions.userflags))
 617                         file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
 618                 else
 619                         file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED);
 620                 file->access_date = hfsp_ut2mt(inode->i_atime);
 621                 file->content_mod_date = hfsp_ut2mt(inode->i_mtime);
 622                 file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
 623                 hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
 624                                          sizeof(struct hfsplus_cat_file));
 625         }
 626
 627         set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags);
 628 out:
 629         hfs_find_exit(&fd);
 630         return 0;
 631 }