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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/bitmap.h>
17#include <linux/slab.h>
18
19
20
21static void mark_dirty(struct super_block *s, int remount)
22{
23 if (hpfs_sb(s)->sb_chkdsk && (remount || !(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 sync_dirty_buffer(bh);
31 brelse(bh);
32 }
33 }
34}
35
36
37
38
39static void unmark_dirty(struct super_block *s)
40{
41 struct buffer_head *bh;
42 struct hpfs_spare_block *sb;
43 if (s->s_flags & MS_RDONLY) return;
44 sync_blockdev(s->s_bdev);
45 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
46 sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
47 sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
48 mark_buffer_dirty(bh);
49 sync_dirty_buffer(bh);
50 brelse(bh);
51 }
52}
53
54
55static char err_buf[1024];
56
57void hpfs_error(struct super_block *s, const char *fmt, ...)
58{
59 va_list args;
60
61 va_start(args, fmt);
62 vsnprintf(err_buf, sizeof(err_buf), fmt, args);
63 va_end(args);
64
65 printk("HPFS: filesystem error: %s", err_buf);
66 if (!hpfs_sb(s)->sb_was_error) {
67 if (hpfs_sb(s)->sb_err == 2) {
68 printk("; crashing the system because you wanted it\n");
69 mark_dirty(s, 0);
70 panic("HPFS panic");
71 } else if (hpfs_sb(s)->sb_err == 1) {
72 if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
73 else {
74 printk("; remounting read-only\n");
75 mark_dirty(s, 0);
76 s->s_flags |= MS_RDONLY;
77 }
78 } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
79 else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
80 } else printk("\n");
81 hpfs_sb(s)->sb_was_error = 1;
82}
83
84
85
86
87
88
89
90
91
92int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
93 char *msg)
94{
95 if (*c2 && *c1 == key) {
96 hpfs_error(s, "cycle detected on key %08x in %s", key, msg);
97 return 1;
98 }
99 (*c2)++;
100 if (!((*c2 - 1) & *c2)) *c1 = key;
101 return 0;
102}
103
104static void hpfs_put_super(struct super_block *s)
105{
106 struct hpfs_sb_info *sbi = hpfs_sb(s);
107
108 hpfs_lock(s);
109 unmark_dirty(s);
110 hpfs_unlock(s);
111
112 kfree(sbi->sb_cp_table);
113 kfree(sbi->sb_bmp_dir);
114 s->s_fs_info = NULL;
115 kfree(sbi);
116}
117
118unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
119{
120 struct quad_buffer_head qbh;
121 unsigned long *bits;
122 unsigned count;
123
124 bits = hpfs_map_4sectors(s, secno, &qbh, 0);
125 if (!bits)
126 return 0;
127 count = bitmap_weight(bits, 2048 * BITS_PER_BYTE);
128 hpfs_brelse4(&qbh);
129 return count;
130}
131
132static unsigned count_bitmaps(struct super_block *s)
133{
134 unsigned n, count, n_bands;
135 n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
136 count = 0;
137 for (n = 0; n < COUNT_RD_AHEAD; n++) {
138 hpfs_prefetch_bitmap(s, n);
139 }
140 for (n = 0; n < n_bands; n++) {
141 hpfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD);
142 count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
143 }
144 return count;
145}
146
147static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
148{
149 struct super_block *s = dentry->d_sb;
150 struct hpfs_sb_info *sbi = hpfs_sb(s);
151 u64 id = huge_encode_dev(s->s_bdev->bd_dev);
152 hpfs_lock(s);
153
154
155 sbi->sb_n_free = count_bitmaps(s);
156 sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
157
158 buf->f_type = s->s_magic;
159 buf->f_bsize = 512;
160 buf->f_blocks = sbi->sb_fs_size;
161 buf->f_bfree = sbi->sb_n_free;
162 buf->f_bavail = sbi->sb_n_free;
163 buf->f_files = sbi->sb_dirband_size / 4;
164 buf->f_ffree = sbi->sb_n_free_dnodes;
165 buf->f_fsid.val[0] = (u32)id;
166 buf->f_fsid.val[1] = (u32)(id >> 32);
167 buf->f_namelen = 254;
168
169 hpfs_unlock(s);
170
171 return 0;
172}
173
174static struct kmem_cache * hpfs_inode_cachep;
175
176static struct inode *hpfs_alloc_inode(struct super_block *sb)
177{
178 struct hpfs_inode_info *ei;
179 ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, GFP_NOFS);
180 if (!ei)
181 return NULL;
182 ei->vfs_inode.i_version = 1;
183 return &ei->vfs_inode;
184}
185
186static void hpfs_i_callback(struct rcu_head *head)
187{
188 struct inode *inode = container_of(head, struct inode, i_rcu);
189 kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
190}
191
192static void hpfs_destroy_inode(struct inode *inode)
193{
194 call_rcu(&inode->i_rcu, hpfs_i_callback);
195}
196
197static void init_once(void *foo)
198{
199 struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
200
201 inode_init_once(&ei->vfs_inode);
202}
203
204static int init_inodecache(void)
205{
206 hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache",
207 sizeof(struct hpfs_inode_info),
208 0, (SLAB_RECLAIM_ACCOUNT|
209 SLAB_MEM_SPREAD),
210 init_once);
211 if (hpfs_inode_cachep == NULL)
212 return -ENOMEM;
213 return 0;
214}
215
216static void destroy_inodecache(void)
217{
218
219
220
221
222 rcu_barrier();
223 kmem_cache_destroy(hpfs_inode_cachep);
224}
225
226
227
228
229
230
231
232enum {
233 Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis,
234 Opt_check_none, Opt_check_normal, Opt_check_strict,
235 Opt_err_cont, Opt_err_ro, Opt_err_panic,
236 Opt_eas_no, Opt_eas_ro, Opt_eas_rw,
237 Opt_chkdsk_no, Opt_chkdsk_errors, Opt_chkdsk_always,
238 Opt_timeshift, Opt_err,
239};
240
241static const match_table_t tokens = {
242 {Opt_help, "help"},
243 {Opt_uid, "uid=%u"},
244 {Opt_gid, "gid=%u"},
245 {Opt_umask, "umask=%o"},
246 {Opt_case_lower, "case=lower"},
247 {Opt_case_asis, "case=asis"},
248 {Opt_check_none, "check=none"},
249 {Opt_check_normal, "check=normal"},
250 {Opt_check_strict, "check=strict"},
251 {Opt_err_cont, "errors=continue"},
252 {Opt_err_ro, "errors=remount-ro"},
253 {Opt_err_panic, "errors=panic"},
254 {Opt_eas_no, "eas=no"},
255 {Opt_eas_ro, "eas=ro"},
256 {Opt_eas_rw, "eas=rw"},
257 {Opt_chkdsk_no, "chkdsk=no"},
258 {Opt_chkdsk_errors, "chkdsk=errors"},
259 {Opt_chkdsk_always, "chkdsk=always"},
260 {Opt_timeshift, "timeshift=%d"},
261 {Opt_err, NULL},
262};
263
264static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask,
265 int *lowercase, int *eas, int *chk, int *errs,
266 int *chkdsk, int *timeshift)
267{
268 char *p;
269 int option;
270
271 if (!opts)
272 return 1;
273
274
275
276 while ((p = strsep(&opts, ",")) != NULL) {
277 substring_t args[MAX_OPT_ARGS];
278 int token;
279 if (!*p)
280 continue;
281
282 token = match_token(p, tokens, args);
283 switch (token) {
284 case Opt_help:
285 return 2;
286 case Opt_uid:
287 if (match_int(args, &option))
288 return 0;
289 *uid = make_kuid(current_user_ns(), option);
290 if (!uid_valid(*uid))
291 return 0;
292 break;
293 case Opt_gid:
294 if (match_int(args, &option))
295 return 0;
296 *gid = make_kgid(current_user_ns(), option);
297 if (!gid_valid(*gid))
298 return 0;
299 break;
300 case Opt_umask:
301 if (match_octal(args, &option))
302 return 0;
303 *umask = option;
304 break;
305 case Opt_case_lower:
306 *lowercase = 1;
307 break;
308 case Opt_case_asis:
309 *lowercase = 0;
310 break;
311 case Opt_check_none:
312 *chk = 0;
313 break;
314 case Opt_check_normal:
315 *chk = 1;
316 break;
317 case Opt_check_strict:
318 *chk = 2;
319 break;
320 case Opt_err_cont:
321 *errs = 0;
322 break;
323 case Opt_err_ro:
324 *errs = 1;
325 break;
326 case Opt_err_panic:
327 *errs = 2;
328 break;
329 case Opt_eas_no:
330 *eas = 0;
331 break;
332 case Opt_eas_ro:
333 *eas = 1;
334 break;
335 case Opt_eas_rw:
336 *eas = 2;
337 break;
338 case Opt_chkdsk_no:
339 *chkdsk = 0;
340 break;
341 case Opt_chkdsk_errors:
342 *chkdsk = 1;
343 break;
344 case Opt_chkdsk_always:
345 *chkdsk = 2;
346 break;
347 case Opt_timeshift:
348 {
349 int m = 1;
350 char *rhs = args[0].from;
351 if (!rhs || !*rhs)
352 return 0;
353 if (*rhs == '-') m = -1;
354 if (*rhs == '+' || *rhs == '-') rhs++;
355 *timeshift = simple_strtoul(rhs, &rhs, 0) * m;
356 if (*rhs)
357 return 0;
358 break;
359 }
360 default:
361 return 0;
362 }
363 }
364 return 1;
365}
366
367static inline void hpfs_help(void)
368{
369 printk("\n\
370HPFS filesystem options:\n\
371 help do not mount and display this text\n\
372 uid=xxx set uid of files that don't have uid specified in eas\n\
373 gid=xxx set gid of files that don't have gid specified in eas\n\
374 umask=xxx set mode of files that don't have mode specified in eas\n\
375 case=lower lowercase all files\n\
376 case=asis do not lowercase files (default)\n\
377 check=none no fs checks - kernel may crash on corrupted filesystem\n\
378 check=normal do some checks - it should not crash (default)\n\
379 check=strict do extra time-consuming checks, used for debugging\n\
380 errors=continue continue on errors\n\
381 errors=remount-ro remount read-only if errors found (default)\n\
382 errors=panic panic on errors\n\
383 chkdsk=no do not mark fs for chkdsking even if there were errors\n\
384 chkdsk=errors mark fs dirty if errors found (default)\n\
385 chkdsk=always always mark fs dirty - used for debugging\n\
386 eas=no ignore extended attributes\n\
387 eas=ro read but do not write extended attributes\n\
388 eas=rw r/w eas => enables chmod, chown, mknod, ln -s (default)\n\
389 timeshift=nnn add nnn seconds to file times\n\
390\n");
391}
392
393static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
394{
395 kuid_t uid;
396 kgid_t gid;
397 umode_t umask;
398 int lowercase, eas, chk, errs, chkdsk, timeshift;
399 int o;
400 struct hpfs_sb_info *sbi = hpfs_sb(s);
401 char *new_opts = kstrdup(data, GFP_KERNEL);
402
403 *flags |= MS_NOATIME;
404
405 hpfs_lock(s);
406 uid = sbi->sb_uid; gid = sbi->sb_gid;
407 umask = 0777 & ~sbi->sb_mode;
408 lowercase = sbi->sb_lowercase;
409 eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;
410 errs = sbi->sb_err; timeshift = sbi->sb_timeshift;
411
412 if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase,
413 &eas, &chk, &errs, &chkdsk, ×hift))) {
414 printk("HPFS: bad mount options.\n");
415 goto out_err;
416 }
417 if (o == 2) {
418 hpfs_help();
419 goto out_err;
420 }
421 if (timeshift != sbi->sb_timeshift) {
422 printk("HPFS: timeshift can't be changed using remount.\n");
423 goto out_err;
424 }
425
426 unmark_dirty(s);
427
428 sbi->sb_uid = uid; sbi->sb_gid = gid;
429 sbi->sb_mode = 0777 & ~umask;
430 sbi->sb_lowercase = lowercase;
431 sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;
432 sbi->sb_err = errs; sbi->sb_timeshift = timeshift;
433
434 if (!(*flags & MS_RDONLY)) mark_dirty(s, 1);
435
436 replace_mount_options(s, new_opts);
437
438 hpfs_unlock(s);
439 return 0;
440
441out_err:
442 hpfs_unlock(s);
443 kfree(new_opts);
444 return -EINVAL;
445}
446
447
448
449static const struct super_operations hpfs_sops =
450{
451 .alloc_inode = hpfs_alloc_inode,
452 .destroy_inode = hpfs_destroy_inode,
453 .evict_inode = hpfs_evict_inode,
454 .put_super = hpfs_put_super,
455 .statfs = hpfs_statfs,
456 .remount_fs = hpfs_remount_fs,
457 .show_options = generic_show_options,
458};
459
460static int hpfs_fill_super(struct super_block *s, void *options, int silent)
461{
462 struct buffer_head *bh0, *bh1, *bh2;
463 struct hpfs_boot_block *bootblock;
464 struct hpfs_super_block *superblock;
465 struct hpfs_spare_block *spareblock;
466 struct hpfs_sb_info *sbi;
467 struct inode *root;
468
469 kuid_t uid;
470 kgid_t gid;
471 umode_t umask;
472 int lowercase, eas, chk, errs, chkdsk, timeshift;
473
474 dnode_secno root_dno;
475 struct hpfs_dirent *de = NULL;
476 struct quad_buffer_head qbh;
477
478 int o;
479
480 save_mount_options(s, options);
481
482 sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
483 if (!sbi) {
484 return -ENOMEM;
485 }
486 s->s_fs_info = sbi;
487
488 sbi->sb_bmp_dir = NULL;
489 sbi->sb_cp_table = NULL;
490
491 mutex_init(&sbi->hpfs_mutex);
492 hpfs_lock(s);
493
494 uid = current_uid();
495 gid = current_gid();
496 umask = current_umask();
497 lowercase = 0;
498 eas = 2;
499 chk = 1;
500 errs = 1;
501 chkdsk = 1;
502 timeshift = 0;
503
504 if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase,
505 &eas, &chk, &errs, &chkdsk, ×hift))) {
506 printk("HPFS: bad mount options.\n");
507 goto bail0;
508 }
509 if (o==2) {
510 hpfs_help();
511 goto bail0;
512 }
513
514
515 sb_set_blocksize(s, 512);
516 sbi->sb_fs_size = -1;
517 if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
518 if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
519 if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
520
521
522 if (
523 le32_to_cpu(superblock->magic) != SB_MAGIC
524 || le32_to_cpu(spareblock->magic) != SP_MAGIC) {
525 if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
526 goto bail4;
527 }
528
529
530 if (!(s->s_flags & MS_RDONLY) &&
531 superblock->funcversion != 2 && superblock->funcversion != 3) {
532 printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
533 (int)superblock->version, (int)superblock->funcversion);
534 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");
535 goto bail4;
536 }
537
538 s->s_flags |= MS_NOATIME;
539
540
541 s->s_magic = HPFS_SUPER_MAGIC;
542 s->s_op = &hpfs_sops;
543 s->s_d_op = &hpfs_dentry_operations;
544
545 sbi->sb_root = le32_to_cpu(superblock->root);
546 sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors);
547 sbi->sb_bitmaps = le32_to_cpu(superblock->bitmaps);
548 sbi->sb_dirband_start = le32_to_cpu(superblock->dir_band_start);
549 sbi->sb_dirband_size = le32_to_cpu(superblock->n_dir_band);
550 sbi->sb_dmap = le32_to_cpu(superblock->dir_band_bitmap);
551 sbi->sb_uid = uid;
552 sbi->sb_gid = gid;
553 sbi->sb_mode = 0777 & ~umask;
554 sbi->sb_n_free = -1;
555 sbi->sb_n_free_dnodes = -1;
556 sbi->sb_lowercase = lowercase;
557 sbi->sb_eas = eas;
558 sbi->sb_chk = chk;
559 sbi->sb_chkdsk = chkdsk;
560 sbi->sb_err = errs;
561 sbi->sb_timeshift = timeshift;
562 sbi->sb_was_error = 0;
563 sbi->sb_cp_table = NULL;
564 sbi->sb_c_bitmap = -1;
565 sbi->sb_max_fwd_alloc = 0xffffff;
566
567 if (sbi->sb_fs_size >= 0x80000000) {
568 hpfs_error(s, "invalid size in superblock: %08x",
569 (unsigned)sbi->sb_fs_size);
570 goto bail4;
571 }
572
573
574 if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, le32_to_cpu(superblock->bitmaps))))
575 goto bail4;
576
577
578 if (spareblock->dirty && !spareblock->old_wrote) {
579 if (errs == 2) {
580 printk("HPFS: Improperly stopped, not mounted\n");
581 goto bail4;
582 }
583 hpfs_error(s, "improperly stopped");
584 }
585
586 if (!(s->s_flags & MS_RDONLY)) {
587 spareblock->dirty = 1;
588 spareblock->old_wrote = 0;
589 mark_buffer_dirty(bh2);
590 }
591
592 if (spareblock->hotfixes_used || spareblock->n_spares_used) {
593 if (errs >= 2) {
594 printk("HPFS: Hotfixes not supported here, try chkdsk\n");
595 mark_dirty(s, 0);
596 goto bail4;
597 }
598 hpfs_error(s, "hotfixes not supported here, try chkdsk");
599 if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
600 else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
601 }
602 if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) {
603 if (errs >= 2) {
604 printk("HPFS: Spare dnodes used, try chkdsk\n");
605 mark_dirty(s, 0);
606 goto bail4;
607 }
608 hpfs_error(s, "warning: spare dnodes used, try chkdsk");
609 if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
610 }
611 if (chk) {
612 unsigned a;
613 if (le32_to_cpu(superblock->dir_band_end) - le32_to_cpu(superblock->dir_band_start) + 1 != le32_to_cpu(superblock->n_dir_band) ||
614 le32_to_cpu(superblock->dir_band_end) < le32_to_cpu(superblock->dir_band_start) || le32_to_cpu(superblock->n_dir_band) > 0x4000) {
615 hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
616 le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->dir_band_end), le32_to_cpu(superblock->n_dir_band));
617 goto bail4;
618 }
619 a = sbi->sb_dirband_size;
620 sbi->sb_dirband_size = 0;
621 if (hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->n_dir_band), "dir_band") ||
622 hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_bitmap), 4, "dir_band_bitmap") ||
623 hpfs_chk_sectors(s, le32_to_cpu(superblock->bitmaps), 4, "bitmaps")) {
624 mark_dirty(s, 0);
625 goto bail4;
626 }
627 sbi->sb_dirband_size = a;
628 } else printk("HPFS: You really don't want any checks? You are crazy...\n");
629
630
631 if (le32_to_cpu(spareblock->n_code_pages))
632 if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir))))
633 printk("HPFS: Warning: code page support is disabled\n");
634
635 brelse(bh2);
636 brelse(bh1);
637 brelse(bh0);
638
639 root = iget_locked(s, sbi->sb_root);
640 if (!root)
641 goto bail0;
642 hpfs_init_inode(root);
643 hpfs_read_inode(root);
644 unlock_new_inode(root);
645 s->s_root = d_make_root(root);
646 if (!s->s_root)
647 goto bail0;
648
649
650
651
652
653 root_dno = hpfs_fnode_dno(s, sbi->sb_root);
654 if (root_dno)
655 de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);
656 if (!de)
657 hpfs_error(s, "unable to find root dir");
658 else {
659 root->i_atime.tv_sec = local_to_gmt(s, le32_to_cpu(de->read_date));
660 root->i_atime.tv_nsec = 0;
661 root->i_mtime.tv_sec = local_to_gmt(s, le32_to_cpu(de->write_date));
662 root->i_mtime.tv_nsec = 0;
663 root->i_ctime.tv_sec = local_to_gmt(s, le32_to_cpu(de->creation_date));
664 root->i_ctime.tv_nsec = 0;
665 hpfs_i(root)->i_ea_size = le32_to_cpu(de->ea_size);
666 hpfs_i(root)->i_parent_dir = root->i_ino;
667 if (root->i_size == -1)
668 root->i_size = 2048;
669 if (root->i_blocks == -1)
670 root->i_blocks = 5;
671 hpfs_brelse4(&qbh);
672 }
673 hpfs_unlock(s);
674 return 0;
675
676bail4: brelse(bh2);
677bail3: brelse(bh1);
678bail2: brelse(bh0);
679bail1:
680bail0:
681 hpfs_unlock(s);
682 kfree(sbi->sb_bmp_dir);
683 kfree(sbi->sb_cp_table);
684 s->s_fs_info = NULL;
685 kfree(sbi);
686 return -EINVAL;
687}
688
689static struct dentry *hpfs_mount(struct file_system_type *fs_type,
690 int flags, const char *dev_name, void *data)
691{
692 return mount_bdev(fs_type, flags, dev_name, data, hpfs_fill_super);
693}
694
695static struct file_system_type hpfs_fs_type = {
696 .owner = THIS_MODULE,
697 .name = "hpfs",
698 .mount = hpfs_mount,
699 .kill_sb = kill_block_super,
700 .fs_flags = FS_REQUIRES_DEV,
701};
702MODULE_ALIAS_FS("hpfs");
703
704static int __init init_hpfs_fs(void)
705{
706 int err = init_inodecache();
707 if (err)
708 goto out1;
709 err = register_filesystem(&hpfs_fs_type);
710 if (err)
711 goto out;
712 return 0;
713out:
714 destroy_inodecache();
715out1:
716 return err;
717}
718
719static void __exit exit_hpfs_fs(void)
720{
721 unregister_filesystem(&hpfs_fs_type);
722 destroy_inodecache();
723}
724
725module_init(init_hpfs_fs)
726module_exit(exit_hpfs_fs)
727MODULE_LICENSE("GPL");
728
