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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
18
19
20static void mark_dirty(struct super_block *s)
21{
22 if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) {
23 struct buffer_head *bh;
24 struct hpfs_spare_block *sb;
25 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
26 sb->dirty = 1;
27 sb->old_wrote = 0;
28 mark_buffer_dirty(bh);
29 brelse(bh);
30 }
31 }
32}
33
34
35
36
37static void unmark_dirty(struct super_block *s)
38{
39 struct buffer_head *bh;
40 struct hpfs_spare_block *sb;
41 if (s->s_flags & MS_RDONLY) return;
42 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
43 sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
44 sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
45 mark_buffer_dirty(bh);
46 brelse(bh);
47 }
48}
49
50
51static char err_buf[1024];
52
53void hpfs_error(struct super_block *s, const char *fmt, ...)
54{
55 va_list args;
56
57 va_start(args, fmt);
58 vsnprintf(err_buf, sizeof(err_buf), fmt, args);
59 va_end(args);
60
61 printk("HPFS: filesystem error: %s", err_buf);
62 if (!hpfs_sb(s)->sb_was_error) {
63 if (hpfs_sb(s)->sb_err == 2) {
64 printk("; crashing the system because you wanted it\n");
65 mark_dirty(s);
66 panic("HPFS panic");
67 } else if (hpfs_sb(s)->sb_err == 1) {
68 if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
69 else {
70 printk("; remounting read-only\n");
71 mark_dirty(s);
72 s->s_flags |= MS_RDONLY;
73 }
74 } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
75 else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
76 } else printk("\n");
77 hpfs_sb(s)->sb_was_error = 1;
78}
79
80
81
82
83
84
85
86
87
88int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
89 char *msg)
90{
91 if (*c2 && *c1 == key) {
92 hpfs_error(s, "cycle detected on key %08x in %s", key, msg);
93 return 1;
94 }
95 (*c2)++;
96 if (!((*c2 - 1) & *c2)) *c1 = key;
97 return 0;
98}
99
100static void hpfs_put_super(struct super_block *s)
101{
102 struct hpfs_sb_info *sbi = hpfs_sb(s);
103
104 lock_kernel();
105
106 kfree(sbi->sb_cp_table);
107 kfree(sbi->sb_bmp_dir);
108 unmark_dirty(s);
109 s->s_fs_info = NULL;
110 kfree(sbi);
111
112 unlock_kernel();
113}
114
115unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
116{
117 struct quad_buffer_head qbh;
118 unsigned *bits;
119 unsigned i, count;
120 if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;
121 count = 0;
122 for (i = 0; i < 2048 / sizeof(unsigned); i++) {
123 unsigned b;
124 if (!bits[i]) continue;
125 for (b = bits[i]; b; b>>=1) count += b & 1;
126 }
127 hpfs_brelse4(&qbh);
128 return count;
129}
130
131static unsigned count_bitmaps(struct super_block *s)
132{
133 unsigned n, count, n_bands;
134 n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
135 count = 0;
136 for (n = 0; n < n_bands; n++)
137 count += hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_bmp_dir[n]);
138 return count;
139}
140
141static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
142{
143 struct super_block *s = dentry->d_sb;
144 struct hpfs_sb_info *sbi = hpfs_sb(s);
145 u64 id = huge_encode_dev(s->s_bdev->bd_dev);
146 lock_kernel();
147
148
149 sbi->sb_n_free = count_bitmaps(s);
150 sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
151
152 buf->f_type = s->s_magic;
153 buf->f_bsize = 512;
154 buf->f_blocks = sbi->sb_fs_size;
155 buf->f_bfree = sbi->sb_n_free;
156 buf->f_bavail = sbi->sb_n_free;
157 buf->f_files = sbi->sb_dirband_size / 4;
158 buf->f_ffree = sbi->sb_n_free_dnodes;
159 buf->f_fsid.val[0] = (u32)id;
160 buf->f_fsid.val[1] = (u32)(id >> 32);
161 buf->f_namelen = 254;
162
163 unlock_kernel();
164
165 return 0;
166}
167
168static struct kmem_cache * hpfs_inode_cachep;
169
170static struct inode *hpfs_alloc_inode(struct super_block *sb)
171{
172 struct hpfs_inode_info *ei;
173 ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, GFP_NOFS);
174 if (!ei)
175 return NULL;
176 ei->vfs_inode.i_version = 1;
177 return &ei->vfs_inode;
178}
179
180static void hpfs_destroy_inode(struct inode *inode)
181{
182 kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
183}
184
185static void init_once(void *foo)
186{
187 struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
188
189 mutex_init(&ei->i_mutex);
190 mutex_init(&ei->i_parent_mutex);
191 inode_init_once(&ei->vfs_inode);
192}
193
194static int init_inodecache(void)
195{
196 hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache",
197 sizeof(struct hpfs_inode_info),
198 0, (SLAB_RECLAIM_ACCOUNT|
199 SLAB_MEM_SPREAD),
200 init_once);
201 if (hpfs_inode_cachep == NULL)
202 return -ENOMEM;
203 return 0;
204}
205
206static void destroy_inodecache(void)
207{
208 kmem_cache_destroy(hpfs_inode_cachep);
209}
210
211
212
213
214
215
216
217enum {
218 Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis,
219 Opt_conv_binary, Opt_conv_text, Opt_conv_auto,
220 Opt_check_none, Opt_check_normal, Opt_check_strict,
221 Opt_err_cont, Opt_err_ro, Opt_err_panic,
222 Opt_eas_no, Opt_eas_ro, Opt_eas_rw,
223 Opt_chkdsk_no, Opt_chkdsk_errors, Opt_chkdsk_always,
224 Opt_timeshift, Opt_err,
225};
226
227static const match_table_t tokens = {
228 {Opt_help, "help"},
229 {Opt_uid, "uid=%u"},
230 {Opt_gid, "gid=%u"},
231 {Opt_umask, "umask=%o"},
232 {Opt_case_lower, "case=lower"},
233 {Opt_case_asis, "case=asis"},
234 {Opt_conv_binary, "conv=binary"},
235 {Opt_conv_text, "conv=text"},
236 {Opt_conv_auto, "conv=auto"},
237 {Opt_check_none, "check=none"},
238 {Opt_check_normal, "check=normal"},
239 {Opt_check_strict, "check=strict"},
240 {Opt_err_cont, "errors=continue"},
241 {Opt_err_ro, "errors=remount-ro"},
242 {Opt_err_panic, "errors=panic"},
243 {Opt_eas_no, "eas=no"},
244 {Opt_eas_ro, "eas=ro"},
245 {Opt_eas_rw, "eas=rw"},
246 {Opt_chkdsk_no, "chkdsk=no"},
247 {Opt_chkdsk_errors, "chkdsk=errors"},
248 {Opt_chkdsk_always, "chkdsk=always"},
249 {Opt_timeshift, "timeshift=%d"},
250 {Opt_err, NULL},
251};
252
253static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask,
254 int *lowercase, int *conv, int *eas, int *chk, int *errs,
255 int *chkdsk, int *timeshift)
256{
257 char *p;
258 int option;
259
260 if (!opts)
261 return 1;
262
263
264
265 while ((p = strsep(&opts, ",")) != NULL) {
266 substring_t args[MAX_OPT_ARGS];
267 int token;
268 if (!*p)
269 continue;
270
271 token = match_token(p, tokens, args);
272 switch (token) {
273 case Opt_help:
274 return 2;
275 case Opt_uid:
276 if (match_int(args, &option))
277 return 0;
278 *uid = option;
279 break;
280 case Opt_gid:
281 if (match_int(args, &option))
282 return 0;
283 *gid = option;
284 break;
285 case Opt_umask:
286 if (match_octal(args, &option))
287 return 0;
288 *umask = option;
289 break;
290 case Opt_case_lower:
291 *lowercase = 1;
292 break;
293 case Opt_case_asis:
294 *lowercase = 0;
295 break;
296 case Opt_conv_binary:
297 *conv = CONV_BINARY;
298 break;
299 case Opt_conv_text:
300 *conv = CONV_TEXT;
301 break;
302 case Opt_conv_auto:
303 *conv = CONV_AUTO;
304 break;
305 case Opt_check_none:
306 *chk = 0;
307 break;
308 case Opt_check_normal:
309 *chk = 1;
310 break;
311 case Opt_check_strict:
312 *chk = 2;
313 break;
314 case Opt_err_cont:
315 *errs = 0;
316 break;
317 case Opt_err_ro:
318 *errs = 1;
319 break;
320 case Opt_err_panic:
321 *errs = 2;
322 break;
323 case Opt_eas_no:
324 *eas = 0;
325 break;
326 case Opt_eas_ro:
327 *eas = 1;
328 break;
329 case Opt_eas_rw:
330 *eas = 2;
331 break;
332 case Opt_chkdsk_no:
333 *chkdsk = 0;
334 break;
335 case Opt_chkdsk_errors:
336 *chkdsk = 1;
337 break;
338 case Opt_chkdsk_always:
339 *chkdsk = 2;
340 break;
341 case Opt_timeshift:
342 {
343 int m = 1;
344 char *rhs = args[0].from;
345 if (!rhs || !*rhs)
346 return 0;
347 if (*rhs == '-') m = -1;
348 if (*rhs == '+' || *rhs == '-') rhs++;
349 *timeshift = simple_strtoul(rhs, &rhs, 0) * m;
350 if (*rhs)
351 return 0;
352 break;
353 }
354 default:
355 return 0;
356 }
357 }
358 return 1;
359}
360
361static inline void hpfs_help(void)
362{
363 printk("\n\
364HPFS filesystem options:\n\
365 help do not mount and display this text\n\
366 uid=xxx set uid of files that don't have uid specified in eas\n\
367 gid=xxx set gid of files that don't have gid specified in eas\n\
368 umask=xxx set mode of files that don't have mode specified in eas\n\
369 case=lower lowercase all files\n\
370 case=asis do not lowercase files (default)\n\
371 conv=binary do not convert CR/LF -> LF (default)\n\
372 conv=auto convert only files with known text extensions\n\
373 conv=text convert all files\n\
374 check=none no fs checks - kernel may crash on corrupted filesystem\n\
375 check=normal do some checks - it should not crash (default)\n\
376 check=strict do extra time-consuming checks, used for debugging\n\
377 errors=continue continue on errors\n\
378 errors=remount-ro remount read-only if errors found (default)\n\
379 errors=panic panic on errors\n\
380 chkdsk=no do not mark fs for chkdsking even if there were errors\n\
381 chkdsk=errors mark fs dirty if errors found (default)\n\
382 chkdsk=always always mark fs dirty - used for debugging\n\
383 eas=no ignore extended attributes\n\
384 eas=ro read but do not write extended attributes\n\
385 eas=rw r/w eas => enables chmod, chown, mknod, ln -s (default)\n\
386 timeshift=nnn add nnn seconds to file times\n\
387\n");
388}
389
390static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
391{
392 uid_t uid;
393 gid_t gid;
394 umode_t umask;
395 int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
396 int o;
397 struct hpfs_sb_info *sbi = hpfs_sb(s);
398 char *new_opts = kstrdup(data, GFP_KERNEL);
399
400 *flags |= MS_NOATIME;
401
402 lock_kernel();
403 lock_super(s);
404 uid = sbi->sb_uid; gid = sbi->sb_gid;
405 umask = 0777 & ~sbi->sb_mode;
406 lowercase = sbi->sb_lowercase; conv = sbi->sb_conv;
407 eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;
408 errs = sbi->sb_err; timeshift = sbi->sb_timeshift;
409
410 if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv,
411 &eas, &chk, &errs, &chkdsk, ×hift))) {
412 printk("HPFS: bad mount options.\n");
413 goto out_err;
414 }
415 if (o == 2) {
416 hpfs_help();
417 goto out_err;
418 }
419 if (timeshift != sbi->sb_timeshift) {
420 printk("HPFS: timeshift can't be changed using remount.\n");
421 goto out_err;
422 }
423
424 unmark_dirty(s);
425
426 sbi->sb_uid = uid; sbi->sb_gid = gid;
427 sbi->sb_mode = 0777 & ~umask;
428 sbi->sb_lowercase = lowercase; sbi->sb_conv = conv;
429 sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;
430 sbi->sb_err = errs; sbi->sb_timeshift = timeshift;
431
432 if (!(*flags & MS_RDONLY)) mark_dirty(s);
433
434 replace_mount_options(s, new_opts);
435
436 unlock_super(s);
437 unlock_kernel();
438 return 0;
439
440out_err:
441 unlock_super(s);
442 unlock_kernel();
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 .delete_inode = hpfs_delete_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 uid_t uid;
470 gid_t gid;
471 umode_t umask;
472 int lowercase, conv, 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 s->s_fs_info = sbi;
486
487 sbi->sb_bmp_dir = NULL;
488 sbi->sb_cp_table = NULL;
489
490 init_MUTEX(&sbi->hpfs_creation_de);
491
492 uid = current_uid();
493 gid = current_gid();
494 umask = current_umask();
495 lowercase = 0;
496 conv = CONV_BINARY;
497 eas = 2;
498 chk = 1;
499 errs = 1;
500 chkdsk = 1;
501 timeshift = 0;
502
503 if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv,
504 &eas, &chk, &errs, &chkdsk, ×hift))) {
505 printk("HPFS: bad mount options.\n");
506 goto bail0;
507 }
508 if (o==2) {
509 hpfs_help();
510 goto bail0;
511 }
512
513
514 sb_set_blocksize(s, 512);
515 sbi->sb_fs_size = -1;
516 if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
517 if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
518 if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
519
520
521 if (
522 superblock->magic != SB_MAGIC
523 || spareblock->magic != SP_MAGIC) {
524 if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
525 goto bail4;
526 }
527
528
529 if (!(s->s_flags & MS_RDONLY) &&
530 superblock->funcversion != 2 && superblock->funcversion != 3) {
531 printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
532 (int)superblock->version, (int)superblock->funcversion);
533 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");
534 goto bail4;
535 }
536
537 s->s_flags |= MS_NOATIME;
538
539
540 s->s_magic = HPFS_SUPER_MAGIC;
541 s->s_op = &hpfs_sops;
542
543 sbi->sb_root = superblock->root;
544 sbi->sb_fs_size = superblock->n_sectors;
545 sbi->sb_bitmaps = superblock->bitmaps;
546 sbi->sb_dirband_start = superblock->dir_band_start;
547 sbi->sb_dirband_size = superblock->n_dir_band;
548 sbi->sb_dmap = superblock->dir_band_bitmap;
549 sbi->sb_uid = uid;
550 sbi->sb_gid = gid;
551 sbi->sb_mode = 0777 & ~umask;
552 sbi->sb_n_free = -1;
553 sbi->sb_n_free_dnodes = -1;
554 sbi->sb_lowercase = lowercase;
555 sbi->sb_conv = conv;
556 sbi->sb_eas = eas;
557 sbi->sb_chk = chk;
558 sbi->sb_chkdsk = chkdsk;
559 sbi->sb_err = errs;
560 sbi->sb_timeshift = timeshift;
561 sbi->sb_was_error = 0;
562 sbi->sb_cp_table = NULL;
563 sbi->sb_c_bitmap = -1;
564 sbi->sb_max_fwd_alloc = 0xffffff;
565
566
567 if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps)))
568 goto bail4;
569
570
571 if (spareblock->dirty && !spareblock->old_wrote) {
572 if (errs == 2) {
573 printk("HPFS: Improperly stopped, not mounted\n");
574 goto bail4;
575 }
576 hpfs_error(s, "improperly stopped");
577 }
578
579 if (!(s->s_flags & MS_RDONLY)) {
580 spareblock->dirty = 1;
581 spareblock->old_wrote = 0;
582 mark_buffer_dirty(bh2);
583 }
584
585 if (spareblock->hotfixes_used || spareblock->n_spares_used) {
586 if (errs >= 2) {
587 printk("HPFS: Hotfixes not supported here, try chkdsk\n");
588 mark_dirty(s);
589 goto bail4;
590 }
591 hpfs_error(s, "hotfixes not supported here, try chkdsk");
592 if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
593 else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
594 }
595 if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) {
596 if (errs >= 2) {
597 printk("HPFS: Spare dnodes used, try chkdsk\n");
598 mark_dirty(s);
599 goto bail4;
600 }
601 hpfs_error(s, "warning: spare dnodes used, try chkdsk");
602 if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
603 }
604 if (chk) {
605 unsigned a;
606 if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band ||
607 superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) {
608 hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
609 superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band);
610 goto bail4;
611 }
612 a = sbi->sb_dirband_size;
613 sbi->sb_dirband_size = 0;
614 if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") ||
615 hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") ||
616 hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) {
617 mark_dirty(s);
618 goto bail4;
619 }
620 sbi->sb_dirband_size = a;
621 } else printk("HPFS: You really don't want any checks? You are crazy...\n");
622
623
624 if (spareblock->n_code_pages)
625 if (!(sbi->sb_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir)))
626 printk("HPFS: Warning: code page support is disabled\n");
627
628 brelse(bh2);
629 brelse(bh1);
630 brelse(bh0);
631
632 root = iget_locked(s, sbi->sb_root);
633 if (!root)
634 goto bail0;
635 hpfs_init_inode(root);
636 hpfs_read_inode(root);
637 unlock_new_inode(root);
638 s->s_root = d_alloc_root(root);
639 if (!s->s_root) {
640 iput(root);
641 goto bail0;
642 }
643 hpfs_set_dentry_operations(s->s_root);
644
645
646
647
648
649 root_dno = hpfs_fnode_dno(s, sbi->sb_root);
650 if (root_dno)
651 de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);
652 if (!de)
653 hpfs_error(s, "unable to find root dir");
654 else {
655 root->i_atime.tv_sec = local_to_gmt(s, de->read_date);
656 root->i_atime.tv_nsec = 0;
657 root->i_mtime.tv_sec = local_to_gmt(s, de->write_date);
658 root->i_mtime.tv_nsec = 0;
659 root->i_ctime.tv_sec = local_to_gmt(s, de->creation_date);
660 root->i_ctime.tv_nsec = 0;
661 hpfs_i(root)->i_ea_size = de->ea_size;
662 hpfs_i(root)->i_parent_dir = root->i_ino;
663 if (root->i_size == -1)
664 root->i_size = 2048;
665 if (root->i_blocks == -1)
666 root->i_blocks = 5;
667 hpfs_brelse4(&qbh);
668 }
669 return 0;
670
671bail4: brelse(bh2);
672bail3: brelse(bh1);
673bail2: brelse(bh0);
674bail1:
675bail0:
676 kfree(sbi->sb_bmp_dir);
677 kfree(sbi->sb_cp_table);
678 s->s_fs_info = NULL;
679 kfree(sbi);
680 return -EINVAL;
681}
682
683static int hpfs_get_sb(struct file_system_type *fs_type,
684 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
685{
686 return get_sb_bdev(fs_type, flags, dev_name, data, hpfs_fill_super,
687 mnt);
688}
689
690static struct file_system_type hpfs_fs_type = {
691 .owner = THIS_MODULE,
692 .name = "hpfs",
693 .get_sb = hpfs_get_sb,
694 .kill_sb = kill_block_super,
695 .fs_flags = FS_REQUIRES_DEV,
696};
697
698static int __init init_hpfs_fs(void)
699{
700 int err = init_inodecache();
701 if (err)
702 goto out1;
703 err = register_filesystem(&hpfs_fs_type);
704 if (err)
705 goto out;
706 return 0;
707out:
708 destroy_inodecache();
709out1:
710 return err;
711}
712
713static void __exit exit_hpfs_fs(void)
714{
715 unregister_filesystem(&hpfs_fs_type);
716 destroy_inodecache();
717}
718
719module_init(init_hpfs_fs)
720module_exit(exit_hpfs_fs)
721MODULE_LICENSE("GPL");
722
