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