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[net-next-2.6.git] / fs / hpfs / super.c
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1da177e4
LT		 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>
e18fa700 14#include <linux/magic.h>
1da177e4
LT		 15
16/* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
17
18static void mark_dirty(struct super_block *s)
19{
20 if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) {
21 struct buffer_head *bh;
22 struct hpfs_spare_block *sb;
23 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
24 sb->dirty = 1;
25 sb->old_wrote = 0;
26 mark_buffer_dirty(bh);
27 brelse(bh);
28 }
29 }
30}
31
32/* Mark the filesystem clean (mark it dirty for chkdsk if chkdsk==2 or if there
33 were errors) */
34
35static void unmark_dirty(struct super_block *s)
36{
37 struct buffer_head *bh;
38 struct hpfs_spare_block *sb;
39 if (s->s_flags & MS_RDONLY) return;
40 if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
41 sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
42 sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
43 mark_buffer_dirty(bh);
44 brelse(bh);
45 }
46}
47
48/* Filesystem error... */
49
50#define ERR_BUF_SIZE 1024
51
52void hpfs_error(struct super_block *s, char *m,...)
53{
54 char *buf;
55 va_list l;
56 va_start(l, m);
57 if (!(buf = kmalloc(ERR_BUF_SIZE, GFP_KERNEL)))
58 printk("HPFS: No memory for error message '%s'\n",m);
59 else if (vsprintf(buf, m, l) >= ERR_BUF_SIZE)
60 printk("HPFS: Grrrr... Kernel memory corrupted ... going on, but it'll crash very soon :-(\n");
61 printk("HPFS: filesystem error: ");
62 if (buf) printk("%s", buf);
63 else printk("%s\n",m);
64 if (!hpfs_sb(s)->sb_was_error) {
65 if (hpfs_sb(s)->sb_err == 2) {
66 printk("; crashing the system because you wanted it\n");
67 mark_dirty(s);
68 panic("HPFS panic");
69 } else if (hpfs_sb(s)->sb_err == 1) {
70 if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
71 else {
72 printk("; remounting read-only\n");
73 mark_dirty(s);
74 s->s_flags |= MS_RDONLY;
75 }
76 } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
77 else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
78 } else printk("\n");
f99d49ad 79 kfree(buf);
1da177e4
LT		 80 hpfs_sb(s)->sb_was_error = 1;
81}
82
83/*
84 * A little trick to detect cycles in many hpfs structures and don't let the
85 * kernel crash on corrupted filesystem. When first called, set c2 to 0.
86 *
87 * BTW. chkdsk doesn't detect cycles correctly. When I had 2 lost directories
88 * nested each in other, chkdsk locked up happilly.
89 */
90
91int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
92 char *msg)
93{
94 if (*c2 && *c1 == key) {
95 hpfs_error(s, "cycle detected on key %08x in %s", key, msg);
96 return 1;
97 }
98 (*c2)++;
99 if (!((*c2 - 1) & *c2)) *c1 = key;
100 return 0;
101}
102
103static void hpfs_put_super(struct super_block *s)
104{
105 struct hpfs_sb_info *sbi = hpfs_sb(s);
f99d49ad
JJ		 106 kfree(sbi->sb_cp_table);
107 kfree(sbi->sb_bmp_dir);
1da177e4
LT		 108 unmark_dirty(s);
109 s->s_fs_info = NULL;
110 kfree(sbi);
111}
112
113unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
114{
115 struct quad_buffer_head qbh;
116 unsigned *bits;
117 unsigned i, count;
118 if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;
119 count = 0;
120 for (i = 0; i < 2048 / sizeof(unsigned); i++) {
121 unsigned b;
122 if (!bits[i]) continue;
123 for (b = bits[i]; b; b>>=1) count += b & 1;
124 }
125 hpfs_brelse4(&qbh);
126 return count;
127}
128
129static unsigned count_bitmaps(struct super_block *s)
130{
131 unsigned n, count, n_bands;
132 n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
133 count = 0;
134 for (n = 0; n < n_bands; n++)
135 count += hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_bmp_dir[n]);
136 return count;
137}
138
726c3342 139static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
1da177e4 140{
726c3342 141 struct super_block *s = dentry->d_sb;
1da177e4
LT		 142 struct hpfs_sb_info *sbi = hpfs_sb(s);
143 lock_kernel();
144
145 /*if (sbi->sb_n_free == -1) {*/
146 sbi->sb_n_free = count_bitmaps(s);
147 sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
148 /*}*/
149 buf->f_type = s->s_magic;
150 buf->f_bsize = 512;
151 buf->f_blocks = sbi->sb_fs_size;
152 buf->f_bfree = sbi->sb_n_free;
153 buf->f_bavail = sbi->sb_n_free;
154 buf->f_files = sbi->sb_dirband_size / 4;
155 buf->f_ffree = sbi->sb_n_free_dnodes;
156 buf->f_namelen = 254;
157
158 unlock_kernel();
159
160 return 0;
161}
162
163static kmem_cache_t * hpfs_inode_cachep;
164
165static struct inode *hpfs_alloc_inode(struct super_block *sb)
166{
167 struct hpfs_inode_info *ei;
e6b4f8da 168 ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, GFP_NOFS);
1da177e4
LT		 169 if (!ei)
170 return NULL;
171 ei->vfs_inode.i_version = 1;
172 return &ei->vfs_inode;
173}
174
175static void hpfs_destroy_inode(struct inode *inode)
176{
177 kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
178}
179
180static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
181{
182 struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
183
184 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
185 SLAB_CTOR_CONSTRUCTOR) {
7bf6d78d
IM		 186 mutex_init(&ei->i_mutex);
187 mutex_init(&ei->i_parent_mutex);
1da177e4
LT		 188 inode_init_once(&ei->vfs_inode);
189 }
190}
191
192static int init_inodecache(void)
193{
194 hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache",
195 sizeof(struct hpfs_inode_info),
fffb60f9
PJ		 196 0, (SLAB_RECLAIM_ACCOUNT|
197 SLAB_MEM_SPREAD),
1da177e4
LT		 198 init_once, NULL);
199 if (hpfs_inode_cachep == NULL)
200 return -ENOMEM;
201 return 0;
202}
203
204static void destroy_inodecache(void)
205{
1a1d92c1 206 kmem_cache_destroy(hpfs_inode_cachep);
1da177e4
LT		 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
215enum {
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
225static 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
251static 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
359static inline void hpfs_help(void)
360{
361 printk("\n\
362HPFS 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
388static 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, &timeshift))) {
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
434static 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
444static 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
f8314dc6 464 sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
1da177e4
LT		 465 if (!sbi)
466 return -ENOMEM;
467 s->s_fs_info = sbi;
1da177e4
LT		 468
469 sbi->sb_bmp_dir = NULL;
470 sbi->sb_cp_table = NULL;
471
472 init_MUTEX(&sbi->hpfs_creation_de);
473
474 uid = current->uid;
475 gid = current->gid;
476 umask = current->fs->umask;
477 lowercase = 0;
478 conv = CONV_BINARY;
479 eas = 2;
480 chk = 1;
481 errs = 1;
482 chkdsk = 1;
483 timeshift = 0;
484
485 if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv,
486 &eas, &chk, &errs, &chkdsk, &timeshift))) {
487 printk("HPFS: bad mount options.\n");
488 goto bail0;
489 }
490 if (o==2) {
491 hpfs_help();
492 goto bail0;
493 }
494
495 /*sbi->sb_mounting = 1;*/
496 sb_set_blocksize(s, 512);
497 sbi->sb_fs_size = -1;
498 if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
499 if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
500 if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
501
502 /* Check magics */
503 if (/*bootblock->magic != BB_MAGIC
504 ||*/ superblock->magic != SB_MAGIC
505 || spareblock->magic != SP_MAGIC) {
506 if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
507 goto bail4;
508 }
509
510 /* Check version */
511 if (!(s->s_flags & MS_RDONLY) &&
512 superblock->funcversion != 2 && superblock->funcversion != 3) {
513 printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
514 (int)superblock->version, (int)superblock->funcversion);
515 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");
516 goto bail4;
517 }
518
519 s->s_flags |= MS_NOATIME;
520
521 /* Fill superblock stuff */
522 s->s_magic = HPFS_SUPER_MAGIC;
523 s->s_op = &hpfs_sops;
524
525 sbi->sb_root = superblock->root;
526 sbi->sb_fs_size = superblock->n_sectors;
527 sbi->sb_bitmaps = superblock->bitmaps;
528 sbi->sb_dirband_start = superblock->dir_band_start;
529 sbi->sb_dirband_size = superblock->n_dir_band;
530 sbi->sb_dmap = superblock->dir_band_bitmap;
531 sbi->sb_uid = uid;
532 sbi->sb_gid = gid;
533 sbi->sb_mode = 0777 & ~umask;
534 sbi->sb_n_free = -1;
535 sbi->sb_n_free_dnodes = -1;
536 sbi->sb_lowercase = lowercase;
537 sbi->sb_conv = conv;
538 sbi->sb_eas = eas;
539 sbi->sb_chk = chk;
540 sbi->sb_chkdsk = chkdsk;
541 sbi->sb_err = errs;
542 sbi->sb_timeshift = timeshift;
543 sbi->sb_was_error = 0;
544 sbi->sb_cp_table = NULL;
545 sbi->sb_c_bitmap = -1;
546 sbi->sb_max_fwd_alloc = 0xffffff;
547
548 /* Load bitmap directory */
549 if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps)))
550 goto bail4;
551
552 /* Check for general fs errors*/
553 if (spareblock->dirty && !spareblock->old_wrote) {
554 if (errs == 2) {
555 printk("HPFS: Improperly stopped, not mounted\n");
556 goto bail4;
557 }
558 hpfs_error(s, "improperly stopped");
559 }
560
561 if (!(s->s_flags & MS_RDONLY)) {
562 spareblock->dirty = 1;
563 spareblock->old_wrote = 0;
564 mark_buffer_dirty(bh2);
565 }
566
567 if (spareblock->hotfixes_used || spareblock->n_spares_used) {
568 if (errs >= 2) {
569 printk("HPFS: Hotfixes not supported here, try chkdsk\n");
570 mark_dirty(s);
571 goto bail4;
572 }
573 hpfs_error(s, "hotfixes not supported here, try chkdsk");
574 if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
575 else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
576 }
577 if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) {
578 if (errs >= 2) {
579 printk("HPFS: Spare dnodes used, try chkdsk\n");
580 mark_dirty(s);
581 goto bail4;
582 }
583 hpfs_error(s, "warning: spare dnodes used, try chkdsk");
584 if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
585 }
586 if (chk) {
587 unsigned a;
588 if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band ||
589 superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) {
590 hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
591 superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band);
592 goto bail4;
593 }
594 a = sbi->sb_dirband_size;
595 sbi->sb_dirband_size = 0;
596 if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") ||
597 hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") ||
598 hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) {
599 mark_dirty(s);
600 goto bail4;
601 }
602 sbi->sb_dirband_size = a;
603 } else printk("HPFS: You really don't want any checks? You are crazy...\n");
604
605 /* Load code page table */
606 if (spareblock->n_code_pages)
607 if (!(sbi->sb_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir)))
608 printk("HPFS: Warning: code page support is disabled\n");
609
610 brelse(bh2);
611 brelse(bh1);
612 brelse(bh0);
613
614 root = iget_locked(s, sbi->sb_root);
615 if (!root)
616 goto bail0;
617 hpfs_init_inode(root);
618 hpfs_read_inode(root);
619 unlock_new_inode(root);
620 s->s_root = d_alloc_root(root);
621 if (!s->s_root) {
622 iput(root);
623 goto bail0;
624 }
625 hpfs_set_dentry_operations(s->s_root);
626
627 /*
628 * find the root directory's . pointer & finish filling in the inode
629 */
630
631 root_dno = hpfs_fnode_dno(s, sbi->sb_root);
632 if (root_dno)
633 de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);
634 if (!de)
635 hpfs_error(s, "unable to find root dir");
636 else {
637 root->i_atime.tv_sec = local_to_gmt(s, de->read_date);
638 root->i_atime.tv_nsec = 0;
639 root->i_mtime.tv_sec = local_to_gmt(s, de->write_date);
640 root->i_mtime.tv_nsec = 0;
641 root->i_ctime.tv_sec = local_to_gmt(s, de->creation_date);
642 root->i_ctime.tv_nsec = 0;
643 hpfs_i(root)->i_ea_size = de->ea_size;
644 hpfs_i(root)->i_parent_dir = root->i_ino;
645 if (root->i_size == -1)
646 root->i_size = 2048;
647 if (root->i_blocks == -1)
648 root->i_blocks = 5;
649 hpfs_brelse4(&qbh);
650 }
651 return 0;
652
653bail4: brelse(bh2);
654bail3: brelse(bh1);
655bail2: brelse(bh0);
656bail1:
657bail0:
f99d49ad
JJ		 658 kfree(sbi->sb_bmp_dir);
659 kfree(sbi->sb_cp_table);
1da177e4
LT		 660 s->s_fs_info = NULL;
661 kfree(sbi);
662 return -EINVAL;
663}
664
454e2398
DH		 665static int hpfs_get_sb(struct file_system_type *fs_type,
666 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
1da177e4 667{
454e2398
DH		 668 return get_sb_bdev(fs_type, flags, dev_name, data, hpfs_fill_super,
669 mnt);
1da177e4
LT		 670}
671
672static struct file_system_type hpfs_fs_type = {
673 .owner = THIS_MODULE,
674 .name = "hpfs",
675 .get_sb = hpfs_get_sb,
676 .kill_sb = kill_block_super,
677 .fs_flags = FS_REQUIRES_DEV,
678};
679
680static int __init init_hpfs_fs(void)
681{
682 int err = init_inodecache();
683 if (err)
684 goto out1;
685 err = register_filesystem(&hpfs_fs_type);
686 if (err)
687 goto out;
688 return 0;
689out:
690 destroy_inodecache();
691out1:
692 return err;
693}
694
695static void __exit exit_hpfs_fs(void)
696{
697 unregister_filesystem(&hpfs_fs_type);
698 destroy_inodecache();
699}
700
701module_init(init_hpfs_fs)
702module_exit(exit_hpfs_fs)
703MODULE_LICENSE("GPL");
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