1 /* 2 * linux/fs/hpfs/super.c 3 * 4 * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 5 * 6 * mounting, unmounting, error handling 7 */ 8 9 #include "hpfs_fn.h" 10 #include <linux/module.h> 11 #include <linux/parser.h> 12 #include <linux/init.h> 13 #include <linux/statfs.h> 14 #include <linux/magic.h> 15 #include <linux/sched.h> 16 #include <linux/smp_lock.h> 17 #include <linux/bitmap.h> 18 19 /* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */ 20 21 static void mark_dirty(struct super_block *s) 22 { 23 if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) { 24 struct buffer_head *bh; 25 struct hpfs_spare_block *sb; 26 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) { 27 sb->dirty = 1; 28 sb->old_wrote = 0; 29 mark_buffer_dirty(bh); 30 brelse(bh); 31 } 32 } 33 } 34 35 /* Mark the filesystem clean (mark it dirty for chkdsk if chkdsk==2 or if there 36 were errors) */ 37 38 static void unmark_dirty(struct super_block *s) 39 { 40 struct buffer_head *bh; 41 struct hpfs_spare_block *sb; 42 if (s->s_flags & MS_RDONLY) return; 43 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) { 44 sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error; 45 sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error; 46 mark_buffer_dirty(bh); 47 brelse(bh); 48 } 49 } 50 51 /* Filesystem error... */ 52 static char err_buf[1024]; 53 54 void hpfs_error(struct super_block *s, const char *fmt, ...) 55 { 56 va_list args; 57 58 va_start(args, fmt); 59 vsnprintf(err_buf, sizeof(err_buf), fmt, args); 60 va_end(args); 61 62 printk("HPFS: filesystem error: %s", err_buf); 63 if (!hpfs_sb(s)->sb_was_error) { 64 if (hpfs_sb(s)->sb_err == 2) { 65 printk("; crashing the system because you wanted it\n"); 66 mark_dirty(s); 67 panic("HPFS panic"); 68 } else if (hpfs_sb(s)->sb_err == 1) { 69 if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n"); 70 else { 71 printk("; remounting read-only\n"); 72 mark_dirty(s); 73 s->s_flags |= MS_RDONLY; 74 } 75 } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n"); 76 else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n"); 77 } else printk("\n"); 78 hpfs_sb(s)->sb_was_error = 1; 79 } 80 81 /* 82 * A little trick to detect cycles in many hpfs structures and don't let the 83 * kernel crash on corrupted filesystem. When first called, set c2 to 0. 84 * 85 * BTW. chkdsk doesn't detect cycles correctly. When I had 2 lost directories 86 * nested each in other, chkdsk locked up happilly. 87 */ 88 89 int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2, 90 char *msg) 91 { 92 if (*c2 && *c1 == key) { 93 hpfs_error(s, "cycle detected on key %08x in %s", key, msg); 94 return 1; 95 } 96 (*c2)++; 97 if (!((*c2 - 1) & *c2)) *c1 = key; 98 return 0; 99 } 100 101 static void hpfs_put_super(struct super_block *s) 102 { 103 struct hpfs_sb_info *sbi = hpfs_sb(s); 104 105 lock_kernel(); 106 107 kfree(sbi->sb_cp_table); 108 kfree(sbi->sb_bmp_dir); 109 unmark_dirty(s); 110 s->s_fs_info = NULL; 111 kfree(sbi); 112 113 unlock_kernel(); 114 } 115 116 unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno) 117 { 118 struct quad_buffer_head qbh; 119 unsigned long *bits; 120 unsigned count; 121 122 bits = hpfs_map_4sectors(s, secno, &qbh, 4); 123 if (!bits) 124 return 0; 125 count = bitmap_weight(bits, 2048 * BITS_PER_BYTE); 126 hpfs_brelse4(&qbh); 127 return count; 128 } 129 130 static unsigned count_bitmaps(struct super_block *s) 131 { 132 unsigned n, count, n_bands; 133 n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14; 134 count = 0; 135 for (n = 0; n < n_bands; n++) 136 count += hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_bmp_dir[n]); 137 return count; 138 } 139 140 static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf) 141 { 142 struct super_block *s = dentry->d_sb; 143 struct hpfs_sb_info *sbi = hpfs_sb(s); 144 u64 id = huge_encode_dev(s->s_bdev->bd_dev); 145 lock_kernel(); 146 147 /*if (sbi->sb_n_free == -1) {*/ 148 sbi->sb_n_free = count_bitmaps(s); 149 sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap); 150 /*}*/ 151 buf->f_type = s->s_magic; 152 buf->f_bsize = 512; 153 buf->f_blocks = sbi->sb_fs_size; 154 buf->f_bfree = sbi->sb_n_free; 155 buf->f_bavail = sbi->sb_n_free; 156 buf->f_files = sbi->sb_dirband_size / 4; 157 buf->f_ffree = sbi->sb_n_free_dnodes; 158 buf->f_fsid.val[0] = (u32)id; 159 buf->f_fsid.val[1] = (u32)(id >> 32); 160 buf->f_namelen = 254; 161 162 unlock_kernel(); 163 164 return 0; 165 } 166 167 static struct kmem_cache * hpfs_inode_cachep; 168 169 static struct inode *hpfs_alloc_inode(struct super_block *sb) 170 { 171 struct hpfs_inode_info *ei; 172 ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, GFP_NOFS); 173 if (!ei) 174 return NULL; 175 ei->vfs_inode.i_version = 1; 176 return &ei->vfs_inode; 177 } 178 179 static void hpfs_destroy_inode(struct inode *inode) 180 { 181 kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode)); 182 } 183 184 static void init_once(void *foo) 185 { 186 struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo; 187 188 mutex_init(&ei->i_mutex); 189 mutex_init(&ei->i_parent_mutex); 190 inode_init_once(&ei->vfs_inode); 191 } 192 193 static int init_inodecache(void) 194 { 195 hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache", 196 sizeof(struct hpfs_inode_info), 197 0, (SLAB_RECLAIM_ACCOUNT| 198 SLAB_MEM_SPREAD), 199 init_once); 200 if (hpfs_inode_cachep == NULL) 201 return -ENOMEM; 202 return 0; 203 } 204 205 static void destroy_inodecache(void) 206 { 207 kmem_cache_destroy(hpfs_inode_cachep); 208 } 209 210 /* 211 * A tiny parser for option strings, stolen from dosfs. 212 * Stolen again from read-only hpfs. 213 * And updated for table-driven option parsing. 214 */ 215 216 enum { 217 Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis, 218 Opt_conv_binary, Opt_conv_text, Opt_conv_auto, 219 Opt_check_none, Opt_check_normal, Opt_check_strict, 220 Opt_err_cont, Opt_err_ro, Opt_err_panic, 221 Opt_eas_no, Opt_eas_ro, Opt_eas_rw, 222 Opt_chkdsk_no, Opt_chkdsk_errors, Opt_chkdsk_always, 223 Opt_timeshift, Opt_err, 224 }; 225 226 static const match_table_t tokens = { 227 {Opt_help, "help"}, 228 {Opt_uid, "uid=%u"}, 229 {Opt_gid, "gid=%u"}, 230 {Opt_umask, "umask=%o"}, 231 {Opt_case_lower, "case=lower"}, 232 {Opt_case_asis, "case=asis"}, 233 {Opt_conv_binary, "conv=binary"}, 234 {Opt_conv_text, "conv=text"}, 235 {Opt_conv_auto, "conv=auto"}, 236 {Opt_check_none, "check=none"}, 237 {Opt_check_normal, "check=normal"}, 238 {Opt_check_strict, "check=strict"}, 239 {Opt_err_cont, "errors=continue"}, 240 {Opt_err_ro, "errors=remount-ro"}, 241 {Opt_err_panic, "errors=panic"}, 242 {Opt_eas_no, "eas=no"}, 243 {Opt_eas_ro, "eas=ro"}, 244 {Opt_eas_rw, "eas=rw"}, 245 {Opt_chkdsk_no, "chkdsk=no"}, 246 {Opt_chkdsk_errors, "chkdsk=errors"}, 247 {Opt_chkdsk_always, "chkdsk=always"}, 248 {Opt_timeshift, "timeshift=%d"}, 249 {Opt_err, NULL}, 250 }; 251 252 static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask, 253 int *lowercase, int *conv, int *eas, int *chk, int *errs, 254 int *chkdsk, int *timeshift) 255 { 256 char *p; 257 int option; 258 259 if (!opts) 260 return 1; 261 262 /*printk("Parsing opts: '%s'\n",opts);*/ 263 264 while ((p = strsep(&opts, ",")) != NULL) { 265 substring_t args[MAX_OPT_ARGS]; 266 int token; 267 if (!*p) 268 continue; 269 270 token = match_token(p, tokens, args); 271 switch (token) { 272 case Opt_help: 273 return 2; 274 case Opt_uid: 275 if (match_int(args, &option)) 276 return 0; 277 *uid = option; 278 break; 279 case Opt_gid: 280 if (match_int(args, &option)) 281 return 0; 282 *gid = option; 283 break; 284 case Opt_umask: 285 if (match_octal(args, &option)) 286 return 0; 287 *umask = option; 288 break; 289 case Opt_case_lower: 290 *lowercase = 1; 291 break; 292 case Opt_case_asis: 293 *lowercase = 0; 294 break; 295 case Opt_conv_binary: 296 *conv = CONV_BINARY; 297 break; 298 case Opt_conv_text: 299 *conv = CONV_TEXT; 300 break; 301 case Opt_conv_auto: 302 *conv = CONV_AUTO; 303 break; 304 case Opt_check_none: 305 *chk = 0; 306 break; 307 case Opt_check_normal: 308 *chk = 1; 309 break; 310 case Opt_check_strict: 311 *chk = 2; 312 break; 313 case Opt_err_cont: 314 *errs = 0; 315 break; 316 case Opt_err_ro: 317 *errs = 1; 318 break; 319 case Opt_err_panic: 320 *errs = 2; 321 break; 322 case Opt_eas_no: 323 *eas = 0; 324 break; 325 case Opt_eas_ro: 326 *eas = 1; 327 break; 328 case Opt_eas_rw: 329 *eas = 2; 330 break; 331 case Opt_chkdsk_no: 332 *chkdsk = 0; 333 break; 334 case Opt_chkdsk_errors: 335 *chkdsk = 1; 336 break; 337 case Opt_chkdsk_always: 338 *chkdsk = 2; 339 break; 340 case Opt_timeshift: 341 { 342 int m = 1; 343 char *rhs = args[0].from; 344 if (!rhs || !*rhs) 345 return 0; 346 if (*rhs == '-') m = -1; 347 if (*rhs == '+' || *rhs == '-') rhs++; 348 *timeshift = simple_strtoul(rhs, &rhs, 0) * m; 349 if (*rhs) 350 return 0; 351 break; 352 } 353 default: 354 return 0; 355 } 356 } 357 return 1; 358 } 359 360 static inline void hpfs_help(void) 361 { 362 printk("\n\ 363 HPFS filesystem options:\n\ 364 help do not mount and display this text\n\ 365 uid=xxx set uid of files that don't have uid specified in eas\n\ 366 gid=xxx set gid of files that don't have gid specified in eas\n\ 367 umask=xxx set mode of files that don't have mode specified in eas\n\ 368 case=lower lowercase all files\n\ 369 case=asis do not lowercase files (default)\n\ 370 conv=binary do not convert CR/LF -> LF (default)\n\ 371 conv=auto convert only files with known text extensions\n\ 372 conv=text convert all files\n\ 373 check=none no fs checks - kernel may crash on corrupted filesystem\n\ 374 check=normal do some checks - it should not crash (default)\n\ 375 check=strict do extra time-consuming checks, used for debugging\n\ 376 errors=continue continue on errors\n\ 377 errors=remount-ro remount read-only if errors found (default)\n\ 378 errors=panic panic on errors\n\ 379 chkdsk=no do not mark fs for chkdsking even if there were errors\n\ 380 chkdsk=errors mark fs dirty if errors found (default)\n\ 381 chkdsk=always always mark fs dirty - used for debugging\n\ 382 eas=no ignore extended attributes\n\ 383 eas=ro read but do not write extended attributes\n\ 384 eas=rw r/w eas => enables chmod, chown, mknod, ln -s (default)\n\ 385 timeshift=nnn add nnn seconds to file times\n\ 386 \n"); 387 } 388 389 static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) 390 { 391 uid_t uid; 392 gid_t gid; 393 umode_t umask; 394 int lowercase, conv, eas, chk, errs, chkdsk, timeshift; 395 int o; 396 struct hpfs_sb_info *sbi = hpfs_sb(s); 397 char *new_opts = kstrdup(data, GFP_KERNEL); 398 399 *flags |= MS_NOATIME; 400 401 lock_kernel(); 402 lock_super(s); 403 uid = sbi->sb_uid; gid = sbi->sb_gid; 404 umask = 0777 & ~sbi->sb_mode; 405 lowercase = sbi->sb_lowercase; conv = sbi->sb_conv; 406 eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk; 407 errs = sbi->sb_err; timeshift = sbi->sb_timeshift; 408 409 if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv, 410 &eas, &chk, &errs, &chkdsk, ×hift))) { 411 printk("HPFS: bad mount options.\n"); 412 goto out_err; 413 } 414 if (o == 2) { 415 hpfs_help(); 416 goto out_err; 417 } 418 if (timeshift != sbi->sb_timeshift) { 419 printk("HPFS: timeshift can't be changed using remount.\n"); 420 goto out_err; 421 } 422 423 unmark_dirty(s); 424 425 sbi->sb_uid = uid; sbi->sb_gid = gid; 426 sbi->sb_mode = 0777 & ~umask; 427 sbi->sb_lowercase = lowercase; sbi->sb_conv = conv; 428 sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk; 429 sbi->sb_err = errs; sbi->sb_timeshift = timeshift; 430 431 if (!(*flags & MS_RDONLY)) mark_dirty(s); 432 433 replace_mount_options(s, new_opts); 434 435 unlock_super(s); 436 unlock_kernel(); 437 return 0; 438 439 out_err: 440 unlock_super(s); 441 unlock_kernel(); 442 kfree(new_opts); 443 return -EINVAL; 444 } 445 446 /* Super operations */ 447 448 static const struct super_operations hpfs_sops = 449 { 450 .alloc_inode = hpfs_alloc_inode, 451 .destroy_inode = hpfs_destroy_inode, 452 .delete_inode = hpfs_delete_inode, 453 .put_super = hpfs_put_super, 454 .statfs = hpfs_statfs, 455 .remount_fs = hpfs_remount_fs, 456 .show_options = generic_show_options, 457 }; 458 459 static int hpfs_fill_super(struct super_block *s, void *options, int silent) 460 { 461 struct buffer_head *bh0, *bh1, *bh2; 462 struct hpfs_boot_block *bootblock; 463 struct hpfs_super_block *superblock; 464 struct hpfs_spare_block *spareblock; 465 struct hpfs_sb_info *sbi; 466 struct inode *root; 467 468 uid_t uid; 469 gid_t gid; 470 umode_t umask; 471 int lowercase, conv, eas, chk, errs, chkdsk, timeshift; 472 473 dnode_secno root_dno; 474 struct hpfs_dirent *de = NULL; 475 struct quad_buffer_head qbh; 476 477 int o; 478 479 save_mount_options(s, options); 480 481 sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); 482 if (!sbi) 483 return -ENOMEM; 484 s->s_fs_info = sbi; 485 486 sbi->sb_bmp_dir = NULL; 487 sbi->sb_cp_table = NULL; 488 489 init_MUTEX(&sbi->hpfs_creation_de); 490 491 uid = current_uid(); 492 gid = current_gid(); 493 umask = current_umask(); 494 lowercase = 0; 495 conv = CONV_BINARY; 496 eas = 2; 497 chk = 1; 498 errs = 1; 499 chkdsk = 1; 500 timeshift = 0; 501 502 if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv, 503 &eas, &chk, &errs, &chkdsk, ×hift))) { 504 printk("HPFS: bad mount options.\n"); 505 goto bail0; 506 } 507 if (o==2) { 508 hpfs_help(); 509 goto bail0; 510 } 511 512 /*sbi->sb_mounting = 1;*/ 513 sb_set_blocksize(s, 512); 514 sbi->sb_fs_size = -1; 515 if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1; 516 if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2; 517 if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3; 518 519 /* Check magics */ 520 if (/*bootblock->magic != BB_MAGIC 521 ||*/ superblock->magic != SB_MAGIC 522 || spareblock->magic != SP_MAGIC) { 523 if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n"); 524 goto bail4; 525 } 526 527 /* Check version */ 528 if (!(s->s_flags & MS_RDONLY) && 529 superblock->funcversion != 2 && superblock->funcversion != 3) { 530 printk("HPFS: Bad version %d,%d. Mount readonly to go around\n", 531 (int)superblock->version, (int)superblock->funcversion); 532 printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); 533 goto bail4; 534 } 535 536 s->s_flags |= MS_NOATIME; 537 538 /* Fill superblock stuff */ 539 s->s_magic = HPFS_SUPER_MAGIC; 540 s->s_op = &hpfs_sops; 541 542 sbi->sb_root = superblock->root; 543 sbi->sb_fs_size = superblock->n_sectors; 544 sbi->sb_bitmaps = superblock->bitmaps; 545 sbi->sb_dirband_start = superblock->dir_band_start; 546 sbi->sb_dirband_size = superblock->n_dir_band; 547 sbi->sb_dmap = superblock->dir_band_bitmap; 548 sbi->sb_uid = uid; 549 sbi->sb_gid = gid; 550 sbi->sb_mode = 0777 & ~umask; 551 sbi->sb_n_free = -1; 552 sbi->sb_n_free_dnodes = -1; 553 sbi->sb_lowercase = lowercase; 554 sbi->sb_conv = conv; 555 sbi->sb_eas = eas; 556 sbi->sb_chk = chk; 557 sbi->sb_chkdsk = chkdsk; 558 sbi->sb_err = errs; 559 sbi->sb_timeshift = timeshift; 560 sbi->sb_was_error = 0; 561 sbi->sb_cp_table = NULL; 562 sbi->sb_c_bitmap = -1; 563 sbi->sb_max_fwd_alloc = 0xffffff; 564 565 /* Load bitmap directory */ 566 if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps))) 567 goto bail4; 568 569 /* Check for general fs errors*/ 570 if (spareblock->dirty && !spareblock->old_wrote) { 571 if (errs == 2) { 572 printk("HPFS: Improperly stopped, not mounted\n"); 573 goto bail4; 574 } 575 hpfs_error(s, "improperly stopped"); 576 } 577 578 if (!(s->s_flags & MS_RDONLY)) { 579 spareblock->dirty = 1; 580 spareblock->old_wrote = 0; 581 mark_buffer_dirty(bh2); 582 } 583 584 if (spareblock->hotfixes_used || spareblock->n_spares_used) { 585 if (errs >= 2) { 586 printk("HPFS: Hotfixes not supported here, try chkdsk\n"); 587 mark_dirty(s); 588 goto bail4; 589 } 590 hpfs_error(s, "hotfixes not supported here, try chkdsk"); 591 if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n"); 592 else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n"); 593 } 594 if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) { 595 if (errs >= 2) { 596 printk("HPFS: Spare dnodes used, try chkdsk\n"); 597 mark_dirty(s); 598 goto bail4; 599 } 600 hpfs_error(s, "warning: spare dnodes used, try chkdsk"); 601 if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); 602 } 603 if (chk) { 604 unsigned a; 605 if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band || 606 superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) { 607 hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x", 608 superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band); 609 goto bail4; 610 } 611 a = sbi->sb_dirband_size; 612 sbi->sb_dirband_size = 0; 613 if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") || 614 hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") || 615 hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) { 616 mark_dirty(s); 617 goto bail4; 618 } 619 sbi->sb_dirband_size = a; 620 } else printk("HPFS: You really don't want any checks? You are crazy...\n"); 621 622 /* Load code page table */ 623 if (spareblock->n_code_pages) 624 if (!(sbi->sb_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir))) 625 printk("HPFS: Warning: code page support is disabled\n"); 626 627 brelse(bh2); 628 brelse(bh1); 629 brelse(bh0); 630 631 root = iget_locked(s, sbi->sb_root); 632 if (!root) 633 goto bail0; 634 hpfs_init_inode(root); 635 hpfs_read_inode(root); 636 unlock_new_inode(root); 637 s->s_root = d_alloc_root(root); 638 if (!s->s_root) { 639 iput(root); 640 goto bail0; 641 } 642 hpfs_set_dentry_operations(s->s_root); 643 644 /* 645 * find the root directory's . pointer & finish filling in the inode 646 */ 647 648 root_dno = hpfs_fnode_dno(s, sbi->sb_root); 649 if (root_dno) 650 de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh); 651 if (!de) 652 hpfs_error(s, "unable to find root dir"); 653 else { 654 root->i_atime.tv_sec = local_to_gmt(s, de->read_date); 655 root->i_atime.tv_nsec = 0; 656 root->i_mtime.tv_sec = local_to_gmt(s, de->write_date); 657 root->i_mtime.tv_nsec = 0; 658 root->i_ctime.tv_sec = local_to_gmt(s, de->creation_date); 659 root->i_ctime.tv_nsec = 0; 660 hpfs_i(root)->i_ea_size = de->ea_size; 661 hpfs_i(root)->i_parent_dir = root->i_ino; 662 if (root->i_size == -1) 663 root->i_size = 2048; 664 if (root->i_blocks == -1) 665 root->i_blocks = 5; 666 hpfs_brelse4(&qbh); 667 } 668 return 0; 669 670 bail4: brelse(bh2); 671 bail3: brelse(bh1); 672 bail2: brelse(bh0); 673 bail1: 674 bail0: 675 kfree(sbi->sb_bmp_dir); 676 kfree(sbi->sb_cp_table); 677 s->s_fs_info = NULL; 678 kfree(sbi); 679 return -EINVAL; 680 } 681 682 static int hpfs_get_sb(struct file_system_type *fs_type, 683 int flags, const char *dev_name, void *data, struct vfsmount *mnt) 684 { 685 return get_sb_bdev(fs_type, flags, dev_name, data, hpfs_fill_super, 686 mnt); 687 } 688 689 static struct file_system_type hpfs_fs_type = { 690 .owner = THIS_MODULE, 691 .name = "hpfs", 692 .get_sb = hpfs_get_sb, 693 .kill_sb = kill_block_super, 694 .fs_flags = FS_REQUIRES_DEV, 695 }; 696 697 static int __init init_hpfs_fs(void) 698 { 699 int err = init_inodecache(); 700 if (err) 701 goto out1; 702 err = register_filesystem(&hpfs_fs_type); 703 if (err) 704 goto out; 705 return 0; 706 out: 707 destroy_inodecache(); 708 out1: 709 return err; 710 } 711 712 static void __exit exit_hpfs_fs(void) 713 { 714 unregister_filesystem(&hpfs_fs_type); 715 destroy_inodecache(); 716 } 717 718 module_init(init_hpfs_fs) 719 module_exit(exit_hpfs_fs) 720 MODULE_LICENSE("GPL"); 721