fs/hfsplus/super.c

   1 /*
   2  *  linux/fs/hfsplus/super.c
   3  *
   4  * Copyright (C) 2001
   5  * Brad Boyer (flar@allandria.com)
   6  * (C) 2003 Ardis Technologies <roman@ardistech.com>
   7  *
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/pagemap.h>
  13 #include <linux/blkdev.h>
  14 #include <linux/fs.h>
  15 #include <linux/slab.h>
  16 #include <linux/vfs.h>
  17 #include <linux/nls.h>
  18
  19 static struct inode *hfsplus_alloc_inode(struct super_block *sb);
  20 static void hfsplus_destroy_inode(struct inode *inode);
  21
  22 #include "hfsplus_fs.h"
  23
  24 static int hfsplus_system_read_inode(struct inode *inode)
  25 {
  26         struct hfsplus_vh *vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr;
  27
  28         switch (inode->i_ino) {
  29         case HFSPLUS_EXT_CNID:
  30                 hfsplus_inode_read_fork(inode, &vhdr->ext_file);
  31                 inode->i_mapping->a_ops = &hfsplus_btree_aops;
  32                 break;
  33         case HFSPLUS_CAT_CNID:
  34                 hfsplus_inode_read_fork(inode, &vhdr->cat_file);
  35                 inode->i_mapping->a_ops = &hfsplus_btree_aops;
  36                 break;
  37         case HFSPLUS_ALLOC_CNID:
  38                 hfsplus_inode_read_fork(inode, &vhdr->alloc_file);
  39                 inode->i_mapping->a_ops = &hfsplus_aops;
  40                 break;
  41         case HFSPLUS_START_CNID:
  42                 hfsplus_inode_read_fork(inode, &vhdr->start_file);
  43                 break;
  44         case HFSPLUS_ATTR_CNID:
  45                 hfsplus_inode_read_fork(inode, &vhdr->attr_file);
  46                 inode->i_mapping->a_ops = &hfsplus_btree_aops;
  47                 break;
  48         default:
  49                 return -EIO;
  50         }
  51
  52         return 0;
  53 }
  54
  55 struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
  56 {
  57         struct hfs_find_data fd;
  58         struct inode *inode;
  59         int err;
  60
  61         inode = iget_locked(sb, ino);
  62         if (!inode)
  63                 return ERR_PTR(-ENOMEM);
  64         if (!(inode->i_state & I_NEW))
  65                 return inode;
  66
  67         INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);
  68         mutex_init(&HFSPLUS_I(inode)->extents_lock);
  69         HFSPLUS_I(inode)->flags = 0;
  70         HFSPLUS_I(inode)->extent_state = 0;
  71         HFSPLUS_I(inode)->rsrc_inode = NULL;
  72         atomic_set(&HFSPLUS_I(inode)->opencnt, 0);
  73
  74         if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
  75             inode->i_ino == HFSPLUS_ROOT_CNID) {
  76                 hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
  77                 err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
  78                 if (!err)
  79                         err = hfsplus_cat_read_inode(inode, &fd);
  80                 hfs_find_exit(&fd);
  81         } else {
  82                 err = hfsplus_system_read_inode(inode);
  83         }
  84
  85         if (err) {
  86                 iget_failed(inode);
  87                 return ERR_PTR(err);
  88         }
  89
  90         unlock_new_inode(inode);
  91         return inode;
  92 }
  93
  94 static int hfsplus_system_write_inode(struct inode *inode)
  95 {
  96         struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
  97         struct hfsplus_vh *vhdr = sbi->s_vhdr;
  98         struct hfsplus_fork_raw *fork;
  99         struct hfs_btree *tree = NULL;
 100
 101         switch (inode->i_ino) {
 102         case HFSPLUS_EXT_CNID:
 103                 fork = &vhdr->ext_file;
 104                 tree = sbi->ext_tree;
 105                 break;
 106         case HFSPLUS_CAT_CNID:
 107                 fork = &vhdr->cat_file;
 108                 tree = sbi->cat_tree;
 109                 break;
 110         case HFSPLUS_ALLOC_CNID:
 111                 fork = &vhdr->alloc_file;
 112                 break;
 113         case HFSPLUS_START_CNID:
 114                 fork = &vhdr->start_file;
 115                 break;
 116         case HFSPLUS_ATTR_CNID:
 117                 fork = &vhdr->attr_file;
 118                 tree = sbi->attr_tree;
 119         default:
 120                 return -EIO;
 121         }
 122
 123         if (fork->total_size != cpu_to_be64(inode->i_size)) {
 124                 set_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags);
 125                 inode->i_sb->s_dirt = 1;
 126         }
 127         hfsplus_inode_write_fork(inode, fork);
 128         if (tree)
 129                 hfs_btree_write(tree);
 130         return 0;
 131 }
 132
 133 static int hfsplus_write_inode(struct inode *inode,
 134                 struct writeback_control *wbc)
 135 {
 136         dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino);
 137
 138         hfsplus_ext_write_extent(inode);
 139
 140         if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
 141             inode->i_ino == HFSPLUS_ROOT_CNID)
 142                 return hfsplus_cat_write_inode(inode);
 143         else
 144                 return hfsplus_system_write_inode(inode);
 145 }
 146
 147 static void hfsplus_evict_inode(struct inode *inode)
 148 {
 149         dprint(DBG_INODE, "hfsplus_evict_inode: %lu\n", inode->i_ino);
 150         truncate_inode_pages(&inode->i_data, 0);
 151         end_writeback(inode);
 152         if (HFSPLUS_IS_RSRC(inode)) {
 153                 HFSPLUS_I(HFSPLUS_I(inode)->rsrc_inode)->rsrc_inode = NULL;
 154                 iput(HFSPLUS_I(inode)->rsrc_inode);
 155         }
 156 }
 157
 158 int hfsplus_sync_fs(struct super_block *sb, int wait)
 159 {
 160         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 161         struct hfsplus_vh *vhdr = sbi->s_vhdr;
 162         int write_backup = 0;
 163         int error, error2;
 164
 165         if (!wait)
 166                 return 0;
 167
 168         dprint(DBG_SUPER, "hfsplus_write_super\n");
 169
 170         sb->s_dirt = 0;
 171
 172         /*
 173          * Explicitly write out the special metadata inodes.
 174          *
 175          * While these special inodes are marked as hashed and written
 176          * out peridocically by the flusher threads we redirty them
 177          * during writeout of normal inodes, and thus the life lock
 178          * prevents us from getting the latest state to disk.
 179          */
 180         error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping);
 181         error2 = filemap_write_and_wait(sbi->ext_tree->inode->i_mapping);
 182         if (!error)
 183                 error = error2;
 184         error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping);
 185         if (!error)
 186                 error = error2;
 187
 188         mutex_lock(&sbi->vh_mutex);
 189         mutex_lock(&sbi->alloc_mutex);
 190         vhdr->free_blocks = cpu_to_be32(sbi->free_blocks);
 191         vhdr->next_cnid = cpu_to_be32(sbi->next_cnid);
 192         vhdr->folder_count = cpu_to_be32(sbi->folder_count);
 193         vhdr->file_count = cpu_to_be32(sbi->file_count);
 194
 195         if (test_and_clear_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags)) {
 196                 memcpy(sbi->s_backup_vhdr, sbi->s_vhdr, sizeof(*sbi->s_vhdr));
 197                 write_backup = 1;
 198         }
 199
 200         error2 = hfsplus_submit_bio(sb->s_bdev,
 201                                    sbi->part_start + HFSPLUS_VOLHEAD_SECTOR,
 202                                    sbi->s_vhdr, WRITE_SYNC);
 203         if (!error)
 204                 error = error2;
 205         if (!write_backup)
 206                 goto out;
 207
 208         error2 = hfsplus_submit_bio(sb->s_bdev,
 209                                   sbi->part_start + sbi->sect_count - 2,
 210                                   sbi->s_backup_vhdr, WRITE_SYNC);
 211         if (!error)
 212                 error2 = error;
 213 out:
 214         mutex_unlock(&sbi->alloc_mutex);
 215         mutex_unlock(&sbi->vh_mutex);
 216
 217         if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
 218                 blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
 219
 220         return error;
 221 }
 222
 223 static void hfsplus_write_super(struct super_block *sb)
 224 {
 225         if (!(sb->s_flags & MS_RDONLY))
 226                 hfsplus_sync_fs(sb, 1);
 227         else
 228                 sb->s_dirt = 0;
 229 }
 230
 231 static void hfsplus_put_super(struct super_block *sb)
 232 {
 233         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 234
 235         dprint(DBG_SUPER, "hfsplus_put_super\n");
 236
 237         if (!sb->s_fs_info)
 238                 return;
 239
 240         if (!(sb->s_flags & MS_RDONLY) && sbi->s_vhdr) {
 241                 struct hfsplus_vh *vhdr = sbi->s_vhdr;
 242
 243                 vhdr->modify_date = hfsp_now2mt();
 244                 vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT);
 245                 vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT);
 246
 247                 hfsplus_sync_fs(sb, 1);
 248         }
 249
 250         hfs_btree_close(sbi->cat_tree);
 251         hfs_btree_close(sbi->ext_tree);
 252         iput(sbi->alloc_file);
 253         iput(sbi->hidden_dir);
 254         kfree(sbi->s_vhdr);
 255         kfree(sbi->s_backup_vhdr);
 256         unload_nls(sbi->nls);
 257         kfree(sb->s_fs_info);
 258         sb->s_fs_info = NULL;
 259 }
 260
 261 static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf)
 262 {
 263         struct super_block *sb = dentry->d_sb;
 264         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 265         u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
 266
 267         buf->f_type = HFSPLUS_SUPER_MAGIC;
 268         buf->f_bsize = sb->s_blocksize;
 269         buf->f_blocks = sbi->total_blocks << sbi->fs_shift;
 270         buf->f_bfree = sbi->free_blocks << sbi->fs_shift;
 271         buf->f_bavail = buf->f_bfree;
 272         buf->f_files = 0xFFFFFFFF;
 273         buf->f_ffree = 0xFFFFFFFF - sbi->next_cnid;
 274         buf->f_fsid.val[0] = (u32)id;
 275         buf->f_fsid.val[1] = (u32)(id >> 32);
 276         buf->f_namelen = HFSPLUS_MAX_STRLEN;
 277
 278         return 0;
 279 }
 280
 281 static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
 282 {
 283         if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
 284                 return 0;
 285         if (!(*flags & MS_RDONLY)) {
 286                 struct hfsplus_vh *vhdr = HFSPLUS_SB(sb)->s_vhdr;
 287                 int force = 0;
 288
 289                 if (!hfsplus_parse_options_remount(data, &force))
 290                         return -EINVAL;
 291
 292                 if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
 293                         printk(KERN_WARNING "hfs: filesystem was not cleanly unmounted, "
 294                                "running fsck.hfsplus is recommended.  leaving read-only.\n");
 295                         sb->s_flags |= MS_RDONLY;
 296                         *flags |= MS_RDONLY;
 297                 } else if (force) {
 298                         /* nothing */
 299                 } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
 300                         printk(KERN_WARNING "hfs: filesystem is marked locked, leaving read-only.\n");
 301                         sb->s_flags |= MS_RDONLY;
 302                         *flags |= MS_RDONLY;
 303                 } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) {
 304                         printk(KERN_WARNING "hfs: filesystem is marked journaled, leaving read-only.\n");
 305                         sb->s_flags |= MS_RDONLY;
 306                         *flags |= MS_RDONLY;
 307                 }
 308         }
 309         return 0;
 310 }
 311
 312 static const struct super_operations hfsplus_sops = {
 313         .alloc_inode    = hfsplus_alloc_inode,
 314         .destroy_inode  = hfsplus_destroy_inode,
 315         .write_inode    = hfsplus_write_inode,
 316         .evict_inode    = hfsplus_evict_inode,
 317         .put_super      = hfsplus_put_super,
 318         .write_super    = hfsplus_write_super,
 319         .sync_fs        = hfsplus_sync_fs,
 320         .statfs         = hfsplus_statfs,
 321         .remount_fs     = hfsplus_remount,
 322         .show_options   = hfsplus_show_options,
 323 };
 324
 325 static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
 326 {
 327         struct hfsplus_vh *vhdr;
 328         struct hfsplus_sb_info *sbi;
 329         hfsplus_cat_entry entry;
 330         struct hfs_find_data fd;
 331         struct inode *root, *inode;
 332         struct qstr str;
 333         struct nls_table *nls = NULL;
 334         int err = -EINVAL;
 335
 336         sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
 337         if (!sbi)
 338                 return -ENOMEM;
 339
 340         sb->s_fs_info = sbi;
 341         mutex_init(&sbi->alloc_mutex);
 342         mutex_init(&sbi->vh_mutex);
 343         hfsplus_fill_defaults(sbi);
 344         if (!hfsplus_parse_options(data, sbi)) {
 345                 printk(KERN_ERR "hfs: unable to parse mount options\n");
 346                 err = -EINVAL;
 347                 goto cleanup;
 348         }
 349
 350         /* temporarily use utf8 to correctly find the hidden dir below */
 351         nls = sbi->nls;
 352         sbi->nls = load_nls("utf8");
 353         if (!sbi->nls) {
 354                 printk(KERN_ERR "hfs: unable to load nls for utf8\n");
 355                 err = -EINVAL;
 356                 goto cleanup;
 357         }
 358
 359         /* Grab the volume header */
 360         if (hfsplus_read_wrapper(sb)) {
 361                 if (!silent)
 362                         printk(KERN_WARNING "hfs: unable to find HFS+ superblock\n");
 363                 err = -EINVAL;
 364                 goto cleanup;
 365         }
 366         vhdr = sbi->s_vhdr;
 367
 368         /* Copy parts of the volume header into the superblock */
 369         sb->s_magic = HFSPLUS_VOLHEAD_SIG;
 370         if (be16_to_cpu(vhdr->version) < HFSPLUS_MIN_VERSION ||
 371             be16_to_cpu(vhdr->version) > HFSPLUS_CURRENT_VERSION) {
 372                 printk(KERN_ERR "hfs: wrong filesystem version\n");
 373                 goto cleanup;
 374         }
 375         sbi->total_blocks = be32_to_cpu(vhdr->total_blocks);
 376         sbi->free_blocks = be32_to_cpu(vhdr->free_blocks);
 377         sbi->next_cnid = be32_to_cpu(vhdr->next_cnid);
 378         sbi->file_count = be32_to_cpu(vhdr->file_count);
 379         sbi->folder_count = be32_to_cpu(vhdr->folder_count);
 380         sbi->data_clump_blocks =
 381                 be32_to_cpu(vhdr->data_clump_sz) >> sbi->alloc_blksz_shift;
 382         if (!sbi->data_clump_blocks)
 383                 sbi->data_clump_blocks = 1;
 384         sbi->rsrc_clump_blocks =
 385                 be32_to_cpu(vhdr->rsrc_clump_sz) >> sbi->alloc_blksz_shift;
 386         if (!sbi->rsrc_clump_blocks)
 387                 sbi->rsrc_clump_blocks = 1;
 388
 389         /* Set up operations so we can load metadata */
 390         sb->s_op = &hfsplus_sops;
 391         sb->s_maxbytes = MAX_LFS_FILESIZE;
 392
 393         if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
 394                 printk(KERN_WARNING "hfs: Filesystem was not cleanly unmounted, "
 395                        "running fsck.hfsplus is recommended.  mounting read-only.\n");
 396                 sb->s_flags |= MS_RDONLY;
 397         } else if (test_and_clear_bit(HFSPLUS_SB_FORCE, &sbi->flags)) {
 398                 /* nothing */
 399         } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
 400                 printk(KERN_WARNING "hfs: Filesystem is marked locked, mounting read-only.\n");
 401                 sb->s_flags |= MS_RDONLY;
 402         } else if ((vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) && !(sb->s_flags & MS_RDONLY)) {
 403                 printk(KERN_WARNING "hfs: write access to a journaled filesystem is not supported, "
 404                        "use the force option at your own risk, mounting read-only.\n");
 405                 sb->s_flags |= MS_RDONLY;
 406         }
 407
 408         /* Load metadata objects (B*Trees) */
 409         sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);
 410         if (!sbi->ext_tree) {
 411                 printk(KERN_ERR "hfs: failed to load extents file\n");
 412                 goto cleanup;
 413         }
 414         sbi->cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID);
 415         if (!sbi->cat_tree) {
 416                 printk(KERN_ERR "hfs: failed to load catalog file\n");
 417                 goto cleanup;
 418         }
 419
 420         inode = hfsplus_iget(sb, HFSPLUS_ALLOC_CNID);
 421         if (IS_ERR(inode)) {
 422                 printk(KERN_ERR "hfs: failed to load allocation file\n");
 423                 err = PTR_ERR(inode);
 424                 goto cleanup;
 425         }
 426         sbi->alloc_file = inode;
 427
 428         /* Load the root directory */
 429         root = hfsplus_iget(sb, HFSPLUS_ROOT_CNID);
 430         if (IS_ERR(root)) {
 431                 printk(KERN_ERR "hfs: failed to load root directory\n");
 432                 err = PTR_ERR(root);
 433                 goto cleanup;
 434         }
 435         sb->s_root = d_alloc_root(root);
 436         if (!sb->s_root) {
 437                 iput(root);
 438                 err = -ENOMEM;
 439                 goto cleanup;
 440         }
 441         sb->s_root->d_op = &hfsplus_dentry_operations;
 442
 443         str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
 444         str.name = HFSP_HIDDENDIR_NAME;
 445         hfs_find_init(sbi->cat_tree, &fd);
 446         hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str);
 447         if (!hfs_brec_read(&fd, &entry, sizeof(entry))) {
 448                 hfs_find_exit(&fd);
 449                 if (entry.type != cpu_to_be16(HFSPLUS_FOLDER))
 450                         goto cleanup;
 451                 inode = hfsplus_iget(sb, be32_to_cpu(entry.folder.id));
 452                 if (IS_ERR(inode)) {
 453                         err = PTR_ERR(inode);
 454                         goto cleanup;
 455                 }
 456                 sbi->hidden_dir = inode;
 457         } else
 458                 hfs_find_exit(&fd);
 459
 460         if (sb->s_flags & MS_RDONLY)
 461                 goto out;
 462
 463         /* H+LX == hfsplusutils, H+Lx == this driver, H+lx is unused
 464          * all three are registered with Apple for our use
 465          */
 466         vhdr->last_mount_vers = cpu_to_be32(HFSP_MOUNT_VERSION);
 467         vhdr->modify_date = hfsp_now2mt();
 468         be32_add_cpu(&vhdr->write_count, 1);
 469         vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT);
 470         vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT);
 471         hfsplus_sync_fs(sb, 1);
 472
 473         if (!sbi->hidden_dir) {
 474                 mutex_lock(&sbi->vh_mutex);
 475                 sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
 476                 hfsplus_create_cat(sbi->hidden_dir->i_ino, sb->s_root->d_inode,
 477                                    &str, sbi->hidden_dir);
 478                 mutex_unlock(&sbi->vh_mutex);
 479
 480                 hfsplus_mark_inode_dirty(sbi->hidden_dir, HFSPLUS_I_CAT_DIRTY);
 481         }
 482 out:
 483         unload_nls(sbi->nls);
 484         sbi->nls = nls;
 485         return 0;
 486
 487 cleanup:
 488         hfsplus_put_super(sb);
 489         unload_nls(nls);
 490         return err;
 491 }
 492
 493 MODULE_AUTHOR("Brad Boyer");
 494 MODULE_DESCRIPTION("Extended Macintosh Filesystem");
 495 MODULE_LICENSE("GPL");
 496
 497 static struct kmem_cache *hfsplus_inode_cachep;
 498
 499 static struct inode *hfsplus_alloc_inode(struct super_block *sb)
 500 {
 501         struct hfsplus_inode_info *i;
 502
 503         i = kmem_cache_alloc(hfsplus_inode_cachep, GFP_KERNEL);
 504         return i ? &i->vfs_inode : NULL;
 505 }
 506
 507 static void hfsplus_destroy_inode(struct inode *inode)
 508 {
 509         kmem_cache_free(hfsplus_inode_cachep, HFSPLUS_I(inode));
 510 }
 511
 512 #define HFSPLUS_INODE_SIZE      sizeof(struct hfsplus_inode_info)
 513
 514 static struct dentry *hfsplus_mount(struct file_system_type *fs_type,
 515                           int flags, const char *dev_name, void *data)
 516 {
 517         return mount_bdev(fs_type, flags, dev_name, data, hfsplus_fill_super);
 518 }
 519
 520 static struct file_system_type hfsplus_fs_type = {
 521         .owner          = THIS_MODULE,
 522         .name           = "hfsplus",
 523         .mount          = hfsplus_mount,
 524         .kill_sb        = kill_block_super,
 525         .fs_flags       = FS_REQUIRES_DEV,
 526 };
 527
 528 static void hfsplus_init_once(void *p)
 529 {
 530         struct hfsplus_inode_info *i = p;
 531
 532         inode_init_once(&i->vfs_inode);
 533 }
 534
 535 static int __init init_hfsplus_fs(void)
 536 {
 537         int err;
 538
 539         hfsplus_inode_cachep = kmem_cache_create("hfsplus_icache",
 540                 HFSPLUS_INODE_SIZE, 0, SLAB_HWCACHE_ALIGN,
 541                 hfsplus_init_once);
 542         if (!hfsplus_inode_cachep)
 543                 return -ENOMEM;
 544         err = register_filesystem(&hfsplus_fs_type);
 545         if (err)
 546                 kmem_cache_destroy(hfsplus_inode_cachep);
 547         return err;
 548 }
 549
 550 static void __exit exit_hfsplus_fs(void)
 551 {
 552         unregister_filesystem(&hfsplus_fs_type);
 553         kmem_cache_destroy(hfsplus_inode_cachep);
 554 }
 555
 556 module_init(init_hfsplus_fs)
 557 module_exit(exit_hfsplus_fs)