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