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