1 /* 2 * linux/fs/minix/inode.c 3 * 4 * Copyright (C) 1991, 1992 Linus Torvalds 5 * 6 * Copyright (C) 1996 Gertjan van Wingerde (gertjan@cs.vu.nl) 7 * Minix V2 fs support. 8 * 9 * Modified for 680x0 by Andreas Schwab 10 * Updated to filesystem version 3 by Daniel Aragones 11 */ 12 13 #include <linux/module.h> 14 #include "minix.h" 15 #include <linux/buffer_head.h> 16 #include <linux/slab.h> 17 #include <linux/init.h> 18 #include <linux/highuid.h> 19 #include <linux/vfs.h> 20 21 static void minix_read_inode(struct inode * inode); 22 static int minix_write_inode(struct inode * inode, int wait); 23 static int minix_statfs(struct dentry *dentry, struct kstatfs *buf); 24 static int minix_remount (struct super_block * sb, int * flags, char * data); 25 26 static void minix_delete_inode(struct inode *inode) 27 { 28 truncate_inode_pages(&inode->i_data, 0); 29 inode->i_size = 0; 30 minix_truncate(inode); 31 minix_free_inode(inode); 32 } 33 34 static void minix_put_super(struct super_block *sb) 35 { 36 int i; 37 struct minix_sb_info *sbi = minix_sb(sb); 38 39 if (!(sb->s_flags & MS_RDONLY)) { 40 if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 41 sbi->s_ms->s_state = sbi->s_mount_state; 42 mark_buffer_dirty(sbi->s_sbh); 43 } 44 for (i = 0; i < sbi->s_imap_blocks; i++) 45 brelse(sbi->s_imap[i]); 46 for (i = 0; i < sbi->s_zmap_blocks; i++) 47 brelse(sbi->s_zmap[i]); 48 brelse (sbi->s_sbh); 49 kfree(sbi->s_imap); 50 sb->s_fs_info = NULL; 51 kfree(sbi); 52 53 return; 54 } 55 56 static struct kmem_cache * minix_inode_cachep; 57 58 static struct inode *minix_alloc_inode(struct super_block *sb) 59 { 60 struct minix_inode_info *ei; 61 ei = (struct minix_inode_info *)kmem_cache_alloc(minix_inode_cachep, GFP_KERNEL); 62 if (!ei) 63 return NULL; 64 return &ei->vfs_inode; 65 } 66 67 static void minix_destroy_inode(struct inode *inode) 68 { 69 kmem_cache_free(minix_inode_cachep, minix_i(inode)); 70 } 71 72 static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) 73 { 74 struct minix_inode_info *ei = (struct minix_inode_info *) foo; 75 76 inode_init_once(&ei->vfs_inode); 77 } 78 79 static int init_inodecache(void) 80 { 81 minix_inode_cachep = kmem_cache_create("minix_inode_cache", 82 sizeof(struct minix_inode_info), 83 0, (SLAB_RECLAIM_ACCOUNT| 84 SLAB_MEM_SPREAD), 85 init_once); 86 if (minix_inode_cachep == NULL) 87 return -ENOMEM; 88 return 0; 89 } 90 91 static void destroy_inodecache(void) 92 { 93 kmem_cache_destroy(minix_inode_cachep); 94 } 95 96 static const struct super_operations minix_sops = { 97 .alloc_inode = minix_alloc_inode, 98 .destroy_inode = minix_destroy_inode, 99 .read_inode = minix_read_inode, 100 .write_inode = minix_write_inode, 101 .delete_inode = minix_delete_inode, 102 .put_super = minix_put_super, 103 .statfs = minix_statfs, 104 .remount_fs = minix_remount, 105 }; 106 107 static int minix_remount (struct super_block * sb, int * flags, char * data) 108 { 109 struct minix_sb_info * sbi = minix_sb(sb); 110 struct minix_super_block * ms; 111 112 ms = sbi->s_ms; 113 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) 114 return 0; 115 if (*flags & MS_RDONLY) { 116 if (ms->s_state & MINIX_VALID_FS || 117 !(sbi->s_mount_state & MINIX_VALID_FS)) 118 return 0; 119 /* Mounting a rw partition read-only. */ 120 if (sbi->s_version != MINIX_V3) 121 ms->s_state = sbi->s_mount_state; 122 mark_buffer_dirty(sbi->s_sbh); 123 } else { 124 /* Mount a partition which is read-only, read-write. */ 125 if (sbi->s_version != MINIX_V3) { 126 sbi->s_mount_state = ms->s_state; 127 ms->s_state &= ~MINIX_VALID_FS; 128 } else { 129 sbi->s_mount_state = MINIX_VALID_FS; 130 } 131 mark_buffer_dirty(sbi->s_sbh); 132 133 if (!(sbi->s_mount_state & MINIX_VALID_FS)) 134 printk("MINIX-fs warning: remounting unchecked fs, " 135 "running fsck is recommended\n"); 136 else if ((sbi->s_mount_state & MINIX_ERROR_FS)) 137 printk("MINIX-fs warning: remounting fs with errors, " 138 "running fsck is recommended\n"); 139 } 140 return 0; 141 } 142 143 static int minix_fill_super(struct super_block *s, void *data, int silent) 144 { 145 struct buffer_head *bh; 146 struct buffer_head **map; 147 struct minix_super_block *ms; 148 struct minix3_super_block *m3s = NULL; 149 unsigned long i, block; 150 struct inode *root_inode; 151 struct minix_sb_info *sbi; 152 153 sbi = kzalloc(sizeof(struct minix_sb_info), GFP_KERNEL); 154 if (!sbi) 155 return -ENOMEM; 156 s->s_fs_info = sbi; 157 158 BUILD_BUG_ON(32 != sizeof (struct minix_inode)); 159 BUILD_BUG_ON(64 != sizeof(struct minix2_inode)); 160 161 if (!sb_set_blocksize(s, BLOCK_SIZE)) 162 goto out_bad_hblock; 163 164 if (!(bh = sb_bread(s, 1))) 165 goto out_bad_sb; 166 167 ms = (struct minix_super_block *) bh->b_data; 168 sbi->s_ms = ms; 169 sbi->s_sbh = bh; 170 sbi->s_mount_state = ms->s_state; 171 sbi->s_ninodes = ms->s_ninodes; 172 sbi->s_nzones = ms->s_nzones; 173 sbi->s_imap_blocks = ms->s_imap_blocks; 174 sbi->s_zmap_blocks = ms->s_zmap_blocks; 175 sbi->s_firstdatazone = ms->s_firstdatazone; 176 sbi->s_log_zone_size = ms->s_log_zone_size; 177 sbi->s_max_size = ms->s_max_size; 178 s->s_magic = ms->s_magic; 179 if (s->s_magic == MINIX_SUPER_MAGIC) { 180 sbi->s_version = MINIX_V1; 181 sbi->s_dirsize = 16; 182 sbi->s_namelen = 14; 183 sbi->s_link_max = MINIX_LINK_MAX; 184 } else if (s->s_magic == MINIX_SUPER_MAGIC2) { 185 sbi->s_version = MINIX_V1; 186 sbi->s_dirsize = 32; 187 sbi->s_namelen = 30; 188 sbi->s_link_max = MINIX_LINK_MAX; 189 } else if (s->s_magic == MINIX2_SUPER_MAGIC) { 190 sbi->s_version = MINIX_V2; 191 sbi->s_nzones = ms->s_zones; 192 sbi->s_dirsize = 16; 193 sbi->s_namelen = 14; 194 sbi->s_link_max = MINIX2_LINK_MAX; 195 } else if (s->s_magic == MINIX2_SUPER_MAGIC2) { 196 sbi->s_version = MINIX_V2; 197 sbi->s_nzones = ms->s_zones; 198 sbi->s_dirsize = 32; 199 sbi->s_namelen = 30; 200 sbi->s_link_max = MINIX2_LINK_MAX; 201 } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) { 202 m3s = (struct minix3_super_block *) bh->b_data; 203 s->s_magic = m3s->s_magic; 204 sbi->s_imap_blocks = m3s->s_imap_blocks; 205 sbi->s_zmap_blocks = m3s->s_zmap_blocks; 206 sbi->s_firstdatazone = m3s->s_firstdatazone; 207 sbi->s_log_zone_size = m3s->s_log_zone_size; 208 sbi->s_max_size = m3s->s_max_size; 209 sbi->s_ninodes = m3s->s_ninodes; 210 sbi->s_nzones = m3s->s_zones; 211 sbi->s_dirsize = 64; 212 sbi->s_namelen = 60; 213 sbi->s_version = MINIX_V3; 214 sbi->s_link_max = MINIX2_LINK_MAX; 215 sbi->s_mount_state = MINIX_VALID_FS; 216 sb_set_blocksize(s, m3s->s_blocksize); 217 } else 218 goto out_no_fs; 219 220 /* 221 * Allocate the buffer map to keep the superblock small. 222 */ 223 if (sbi->s_imap_blocks == 0 || sbi->s_zmap_blocks == 0) 224 goto out_illegal_sb; 225 i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh); 226 map = kzalloc(i, GFP_KERNEL); 227 if (!map) 228 goto out_no_map; 229 sbi->s_imap = &map[0]; 230 sbi->s_zmap = &map[sbi->s_imap_blocks]; 231 232 block=2; 233 for (i=0 ; i < sbi->s_imap_blocks ; i++) { 234 if (!(sbi->s_imap[i]=sb_bread(s, block))) 235 goto out_no_bitmap; 236 block++; 237 } 238 for (i=0 ; i < sbi->s_zmap_blocks ; i++) { 239 if (!(sbi->s_zmap[i]=sb_bread(s, block))) 240 goto out_no_bitmap; 241 block++; 242 } 243 244 minix_set_bit(0,sbi->s_imap[0]->b_data); 245 minix_set_bit(0,sbi->s_zmap[0]->b_data); 246 247 /* set up enough so that it can read an inode */ 248 s->s_op = &minix_sops; 249 root_inode = iget(s, MINIX_ROOT_INO); 250 if (!root_inode || is_bad_inode(root_inode)) 251 goto out_no_root; 252 253 s->s_root = d_alloc_root(root_inode); 254 if (!s->s_root) 255 goto out_iput; 256 257 if (!NO_TRUNCATE) 258 s->s_root->d_op = &minix_dentry_operations; 259 260 if (!(s->s_flags & MS_RDONLY)) { 261 if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 262 ms->s_state &= ~MINIX_VALID_FS; 263 mark_buffer_dirty(bh); 264 } 265 if (!(sbi->s_mount_state & MINIX_VALID_FS)) 266 printk("MINIX-fs: mounting unchecked file system, " 267 "running fsck is recommended\n"); 268 else if (sbi->s_mount_state & MINIX_ERROR_FS) 269 printk("MINIX-fs: mounting file system with errors, " 270 "running fsck is recommended\n"); 271 return 0; 272 273 out_iput: 274 iput(root_inode); 275 goto out_freemap; 276 277 out_no_root: 278 if (!silent) 279 printk("MINIX-fs: get root inode failed\n"); 280 goto out_freemap; 281 282 out_no_bitmap: 283 printk("MINIX-fs: bad superblock or unable to read bitmaps\n"); 284 out_freemap: 285 for (i = 0; i < sbi->s_imap_blocks; i++) 286 brelse(sbi->s_imap[i]); 287 for (i = 0; i < sbi->s_zmap_blocks; i++) 288 brelse(sbi->s_zmap[i]); 289 kfree(sbi->s_imap); 290 goto out_release; 291 292 out_no_map: 293 if (!silent) 294 printk("MINIX-fs: can't allocate map\n"); 295 goto out_release; 296 297 out_illegal_sb: 298 if (!silent) 299 printk("MINIX-fs: bad superblock\n"); 300 goto out_release; 301 302 out_no_fs: 303 if (!silent) 304 printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 " 305 "on device %s.\n", s->s_id); 306 out_release: 307 brelse(bh); 308 goto out; 309 310 out_bad_hblock: 311 printk("MINIX-fs: blocksize too small for device\n"); 312 goto out; 313 314 out_bad_sb: 315 printk("MINIX-fs: unable to read superblock\n"); 316 out: 317 s->s_fs_info = NULL; 318 kfree(sbi); 319 return -EINVAL; 320 } 321 322 static int minix_statfs(struct dentry *dentry, struct kstatfs *buf) 323 { 324 struct minix_sb_info *sbi = minix_sb(dentry->d_sb); 325 buf->f_type = dentry->d_sb->s_magic; 326 buf->f_bsize = dentry->d_sb->s_blocksize; 327 buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size; 328 buf->f_bfree = minix_count_free_blocks(sbi); 329 buf->f_bavail = buf->f_bfree; 330 buf->f_files = sbi->s_ninodes; 331 buf->f_ffree = minix_count_free_inodes(sbi); 332 buf->f_namelen = sbi->s_namelen; 333 return 0; 334 } 335 336 static int minix_get_block(struct inode *inode, sector_t block, 337 struct buffer_head *bh_result, int create) 338 { 339 if (INODE_VERSION(inode) == MINIX_V1) 340 return V1_minix_get_block(inode, block, bh_result, create); 341 else 342 return V2_minix_get_block(inode, block, bh_result, create); 343 } 344 345 static int minix_writepage(struct page *page, struct writeback_control *wbc) 346 { 347 return block_write_full_page(page, minix_get_block, wbc); 348 } 349 350 static int minix_readpage(struct file *file, struct page *page) 351 { 352 return block_read_full_page(page,minix_get_block); 353 } 354 355 int __minix_write_begin(struct file *file, struct address_space *mapping, 356 loff_t pos, unsigned len, unsigned flags, 357 struct page **pagep, void **fsdata) 358 { 359 return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 360 minix_get_block); 361 } 362 363 static int minix_write_begin(struct file *file, struct address_space *mapping, 364 loff_t pos, unsigned len, unsigned flags, 365 struct page **pagep, void **fsdata) 366 { 367 *pagep = NULL; 368 return __minix_write_begin(file, mapping, pos, len, flags, pagep, fsdata); 369 } 370 371 static sector_t minix_bmap(struct address_space *mapping, sector_t block) 372 { 373 return generic_block_bmap(mapping,block,minix_get_block); 374 } 375 376 static const struct address_space_operations minix_aops = { 377 .readpage = minix_readpage, 378 .writepage = minix_writepage, 379 .sync_page = block_sync_page, 380 .write_begin = minix_write_begin, 381 .write_end = generic_write_end, 382 .bmap = minix_bmap 383 }; 384 385 static const struct inode_operations minix_symlink_inode_operations = { 386 .readlink = generic_readlink, 387 .follow_link = page_follow_link_light, 388 .put_link = page_put_link, 389 .getattr = minix_getattr, 390 }; 391 392 void minix_set_inode(struct inode *inode, dev_t rdev) 393 { 394 if (S_ISREG(inode->i_mode)) { 395 inode->i_op = &minix_file_inode_operations; 396 inode->i_fop = &minix_file_operations; 397 inode->i_mapping->a_ops = &minix_aops; 398 } else if (S_ISDIR(inode->i_mode)) { 399 inode->i_op = &minix_dir_inode_operations; 400 inode->i_fop = &minix_dir_operations; 401 inode->i_mapping->a_ops = &minix_aops; 402 } else if (S_ISLNK(inode->i_mode)) { 403 inode->i_op = &minix_symlink_inode_operations; 404 inode->i_mapping->a_ops = &minix_aops; 405 } else 406 init_special_inode(inode, inode->i_mode, rdev); 407 } 408 409 /* 410 * The minix V1 function to read an inode. 411 */ 412 static void V1_minix_read_inode(struct inode * inode) 413 { 414 struct buffer_head * bh; 415 struct minix_inode * raw_inode; 416 struct minix_inode_info *minix_inode = minix_i(inode); 417 int i; 418 419 raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 420 if (!raw_inode) { 421 make_bad_inode(inode); 422 return; 423 } 424 inode->i_mode = raw_inode->i_mode; 425 inode->i_uid = (uid_t)raw_inode->i_uid; 426 inode->i_gid = (gid_t)raw_inode->i_gid; 427 inode->i_nlink = raw_inode->i_nlinks; 428 inode->i_size = raw_inode->i_size; 429 inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = raw_inode->i_time; 430 inode->i_mtime.tv_nsec = 0; 431 inode->i_atime.tv_nsec = 0; 432 inode->i_ctime.tv_nsec = 0; 433 inode->i_blocks = 0; 434 for (i = 0; i < 9; i++) 435 minix_inode->u.i1_data[i] = raw_inode->i_zone[i]; 436 minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 437 brelse(bh); 438 } 439 440 /* 441 * The minix V2 function to read an inode. 442 */ 443 static void V2_minix_read_inode(struct inode * inode) 444 { 445 struct buffer_head * bh; 446 struct minix2_inode * raw_inode; 447 struct minix_inode_info *minix_inode = minix_i(inode); 448 int i; 449 450 raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 451 if (!raw_inode) { 452 make_bad_inode(inode); 453 return; 454 } 455 inode->i_mode = raw_inode->i_mode; 456 inode->i_uid = (uid_t)raw_inode->i_uid; 457 inode->i_gid = (gid_t)raw_inode->i_gid; 458 inode->i_nlink = raw_inode->i_nlinks; 459 inode->i_size = raw_inode->i_size; 460 inode->i_mtime.tv_sec = raw_inode->i_mtime; 461 inode->i_atime.tv_sec = raw_inode->i_atime; 462 inode->i_ctime.tv_sec = raw_inode->i_ctime; 463 inode->i_mtime.tv_nsec = 0; 464 inode->i_atime.tv_nsec = 0; 465 inode->i_ctime.tv_nsec = 0; 466 inode->i_blocks = 0; 467 for (i = 0; i < 10; i++) 468 minix_inode->u.i2_data[i] = raw_inode->i_zone[i]; 469 minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 470 brelse(bh); 471 } 472 473 /* 474 * The global function to read an inode. 475 */ 476 static void minix_read_inode(struct inode * inode) 477 { 478 if (INODE_VERSION(inode) == MINIX_V1) 479 V1_minix_read_inode(inode); 480 else 481 V2_minix_read_inode(inode); 482 } 483 484 /* 485 * The minix V1 function to synchronize an inode. 486 */ 487 static struct buffer_head * V1_minix_update_inode(struct inode * inode) 488 { 489 struct buffer_head * bh; 490 struct minix_inode * raw_inode; 491 struct minix_inode_info *minix_inode = minix_i(inode); 492 int i; 493 494 raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 495 if (!raw_inode) 496 return NULL; 497 raw_inode->i_mode = inode->i_mode; 498 raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 499 raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 500 raw_inode->i_nlinks = inode->i_nlink; 501 raw_inode->i_size = inode->i_size; 502 raw_inode->i_time = inode->i_mtime.tv_sec; 503 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 504 raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 505 else for (i = 0; i < 9; i++) 506 raw_inode->i_zone[i] = minix_inode->u.i1_data[i]; 507 mark_buffer_dirty(bh); 508 return bh; 509 } 510 511 /* 512 * The minix V2 function to synchronize an inode. 513 */ 514 static struct buffer_head * V2_minix_update_inode(struct inode * inode) 515 { 516 struct buffer_head * bh; 517 struct minix2_inode * raw_inode; 518 struct minix_inode_info *minix_inode = minix_i(inode); 519 int i; 520 521 raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 522 if (!raw_inode) 523 return NULL; 524 raw_inode->i_mode = inode->i_mode; 525 raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 526 raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 527 raw_inode->i_nlinks = inode->i_nlink; 528 raw_inode->i_size = inode->i_size; 529 raw_inode->i_mtime = inode->i_mtime.tv_sec; 530 raw_inode->i_atime = inode->i_atime.tv_sec; 531 raw_inode->i_ctime = inode->i_ctime.tv_sec; 532 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 533 raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 534 else for (i = 0; i < 10; i++) 535 raw_inode->i_zone[i] = minix_inode->u.i2_data[i]; 536 mark_buffer_dirty(bh); 537 return bh; 538 } 539 540 static struct buffer_head *minix_update_inode(struct inode *inode) 541 { 542 if (INODE_VERSION(inode) == MINIX_V1) 543 return V1_minix_update_inode(inode); 544 else 545 return V2_minix_update_inode(inode); 546 } 547 548 static int minix_write_inode(struct inode * inode, int wait) 549 { 550 brelse(minix_update_inode(inode)); 551 return 0; 552 } 553 554 int minix_sync_inode(struct inode * inode) 555 { 556 int err = 0; 557 struct buffer_head *bh; 558 559 bh = minix_update_inode(inode); 560 if (bh && buffer_dirty(bh)) 561 { 562 sync_dirty_buffer(bh); 563 if (buffer_req(bh) && !buffer_uptodate(bh)) 564 { 565 printk("IO error syncing minix inode [%s:%08lx]\n", 566 inode->i_sb->s_id, inode->i_ino); 567 err = -1; 568 } 569 } 570 else if (!bh) 571 err = -1; 572 brelse (bh); 573 return err; 574 } 575 576 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) 577 { 578 struct inode *dir = dentry->d_parent->d_inode; 579 struct super_block *sb = dir->i_sb; 580 generic_fillattr(dentry->d_inode, stat); 581 if (INODE_VERSION(dentry->d_inode) == MINIX_V1) 582 stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb); 583 else 584 stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb); 585 stat->blksize = sb->s_blocksize; 586 return 0; 587 } 588 589 /* 590 * The function that is called for file truncation. 591 */ 592 void minix_truncate(struct inode * inode) 593 { 594 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) 595 return; 596 if (INODE_VERSION(inode) == MINIX_V1) 597 V1_minix_truncate(inode); 598 else 599 V2_minix_truncate(inode); 600 } 601 602 static int minix_get_sb(struct file_system_type *fs_type, 603 int flags, const char *dev_name, void *data, struct vfsmount *mnt) 604 { 605 return get_sb_bdev(fs_type, flags, dev_name, data, minix_fill_super, 606 mnt); 607 } 608 609 static struct file_system_type minix_fs_type = { 610 .owner = THIS_MODULE, 611 .name = "minix", 612 .get_sb = minix_get_sb, 613 .kill_sb = kill_block_super, 614 .fs_flags = FS_REQUIRES_DEV, 615 }; 616 617 static int __init init_minix_fs(void) 618 { 619 int err = init_inodecache(); 620 if (err) 621 goto out1; 622 err = register_filesystem(&minix_fs_type); 623 if (err) 624 goto out; 625 return 0; 626 out: 627 destroy_inodecache(); 628 out1: 629 return err; 630 } 631 632 static void __exit exit_minix_fs(void) 633 { 634 unregister_filesystem(&minix_fs_type); 635 destroy_inodecache(); 636 } 637 638 module_init(init_minix_fs) 639 module_exit(exit_minix_fs) 640 MODULE_LICENSE("GPL"); 641 642