5
* Daniel Pirkl <daniel.pirkl@email.cz>
6
* Charles University, Faculty of Mathematics and Physics
11
* linux/fs/ext2/super.c
13
* Copyright (C) 1992, 1993, 1994, 1995
14
* Remy Card (card@masi.ibp.fr)
15
* Laboratoire MASI - Institut Blaise Pascal
16
* Universite Pierre et Marie Curie (Paris VI)
20
* linux/fs/minix/inode.c
22
* Copyright (C) 1991, 1992 Linus Torvalds
24
* Big-endian to little-endian byte-swapping/bitmaps by
25
* David S. Miller (davem@caip.rutgers.edu), 1995
31
* linux/fs/ufs/super.c
34
* Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
35
* Laboratory for Computer Science Research Computing Facility
36
* Rutgers, The State University of New Jersey
38
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
40
* Kernel module support added on 96/04/26 by
41
* Stefan Reinauer <stepan@home.culture.mipt.ru>
43
* Module usage counts added on 96/04/29 by
44
* Gertjan van Wingerde <gwingerde@gmail.com>
46
* Clean swab support on 19970406 by
47
* Francois-Rene Rideau <fare@tunes.org>
49
* 4.4BSD (FreeBSD) support added on February 1st 1998 by
50
* Niels Kristian Bech Jensen <nkbj@image.dk> partially based
51
* on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
53
* NeXTstep support added on February 5th 1998 by
54
* Niels Kristian Bech Jensen <nkbj@image.dk>.
56
* write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
58
* HP/UX hfs filesystem support added by
59
* Martin K. Petersen <mkp@mkp.net>, August 1999
61
* UFS2 (of FreeBSD 5.x) support added by
62
* Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
64
* UFS2 write support added by
65
* Evgeniy Dushistov <dushistov@mail.ru>, 2007
69
#include <linux/exportfs.h>
70
#include <linux/module.h>
71
#include <linux/bitops.h>
75
#include <asm/uaccess.h>
76
#include <asm/system.h>
78
#include <linux/errno.h>
80
#include <linux/slab.h>
81
#include <linux/time.h>
82
#include <linux/stat.h>
83
#include <linux/string.h>
84
#include <linux/blkdev.h>
85
#include <linux/init.h>
86
#include <linux/parser.h>
87
#include <linux/buffer_head.h>
88
#include <linux/vfs.h>
89
#include <linux/log2.h>
90
#include <linux/mount.h>
91
#include <linux/seq_file.h>
98
void lock_ufs(struct super_block *sb)
100
#if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
101
struct ufs_sb_info *sbi = UFS_SB(sb);
103
mutex_lock(&sbi->mutex);
104
sbi->mutex_owner = current;
108
void unlock_ufs(struct super_block *sb)
110
#if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
111
struct ufs_sb_info *sbi = UFS_SB(sb);
113
sbi->mutex_owner = NULL;
114
mutex_unlock(&sbi->mutex);
118
static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
120
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
123
if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg)
124
return ERR_PTR(-ESTALE);
126
inode = ufs_iget(sb, ino);
128
return ERR_CAST(inode);
129
if (generation && inode->i_generation != generation) {
131
return ERR_PTR(-ESTALE);
136
static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
137
int fh_len, int fh_type)
139
return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
142
static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
143
int fh_len, int fh_type)
145
return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
148
static struct dentry *ufs_get_parent(struct dentry *child)
150
struct qstr dot_dot = {
156
ino = ufs_inode_by_name(child->d_inode, &dot_dot);
158
return ERR_PTR(-ENOENT);
159
return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino));
162
static const struct export_operations ufs_export_ops = {
163
.fh_to_dentry = ufs_fh_to_dentry,
164
.fh_to_parent = ufs_fh_to_parent,
165
.get_parent = ufs_get_parent,
168
#ifdef CONFIG_UFS_DEBUG
170
* Print contents of ufs_super_block, useful for debugging
172
static void ufs_print_super_stuff(struct super_block *sb,
173
struct ufs_super_block_first *usb1,
174
struct ufs_super_block_second *usb2,
175
struct ufs_super_block_third *usb3)
177
u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
179
printk("ufs_print_super_stuff\n");
180
printk(" magic: 0x%x\n", magic);
181
if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
182
printk(" fs_size: %llu\n", (unsigned long long)
183
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
184
printk(" fs_dsize: %llu\n", (unsigned long long)
185
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
186
printk(" bsize: %u\n",
187
fs32_to_cpu(sb, usb1->fs_bsize));
188
printk(" fsize: %u\n",
189
fs32_to_cpu(sb, usb1->fs_fsize));
190
printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
191
printk(" fs_sblockloc: %llu\n", (unsigned long long)
192
fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
193
printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
194
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
195
printk(" cs_nbfree(No of free blocks): %llu\n",
197
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
198
printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n",
200
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
201
printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n",
203
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
204
printk(KERN_INFO" fs_maxsymlinklen: %u\n",
205
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
207
printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
208
printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
209
printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
210
printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
211
printk(" cgoffset: %u\n",
212
fs32_to_cpu(sb, usb1->fs_cgoffset));
213
printk(" ~cgmask: 0x%x\n",
214
~fs32_to_cpu(sb, usb1->fs_cgmask));
215
printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
216
printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
217
printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
218
printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
219
printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
220
printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
221
printk(" fragshift: %u\n",
222
fs32_to_cpu(sb, usb1->fs_fragshift));
223
printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
224
printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
225
printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
226
printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
227
printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
228
printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
229
printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
230
printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
231
printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
232
printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
233
printk(" fstodb: %u\n",
234
fs32_to_cpu(sb, usb1->fs_fsbtodb));
235
printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
237
fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
238
printk(" nifree %u\n",
239
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
240
printk(" nbfree %u\n",
241
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
242
printk(" nffree %u\n",
243
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
249
* Print contents of ufs_cylinder_group, useful for debugging
251
static void ufs_print_cylinder_stuff(struct super_block *sb,
252
struct ufs_cylinder_group *cg)
254
printk("\nufs_print_cylinder_stuff\n");
255
printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
256
printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
257
printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
258
printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
259
printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
260
printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
261
printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
262
printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
263
printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
264
printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
265
printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
266
printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
267
printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
268
printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
269
printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
270
fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
271
fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
272
fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
273
fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
274
printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
275
printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
276
printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
277
printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
278
printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
279
printk(" clustersumoff %u\n",
280
fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
281
printk(" clusteroff %u\n",
282
fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
283
printk(" nclusterblks %u\n",
284
fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
288
# define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
289
# define ufs_print_cylinder_stuff(sb, cg) /**/
290
#endif /* CONFIG_UFS_DEBUG */
292
static const struct super_operations ufs_super_ops;
294
static char error_buf[1024];
296
void ufs_error (struct super_block * sb, const char * function,
297
const char * fmt, ...)
299
struct ufs_sb_private_info * uspi;
300
struct ufs_super_block_first * usb1;
303
uspi = UFS_SB(sb)->s_uspi;
304
usb1 = ubh_get_usb_first(uspi);
306
if (!(sb->s_flags & MS_RDONLY)) {
307
usb1->fs_clean = UFS_FSBAD;
308
ubh_mark_buffer_dirty(USPI_UBH(uspi));
310
sb->s_flags |= MS_RDONLY;
312
va_start (args, fmt);
313
vsnprintf (error_buf, sizeof(error_buf), fmt, args);
315
switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
316
case UFS_MOUNT_ONERROR_PANIC:
317
panic ("UFS-fs panic (device %s): %s: %s\n",
318
sb->s_id, function, error_buf);
320
case UFS_MOUNT_ONERROR_LOCK:
321
case UFS_MOUNT_ONERROR_UMOUNT:
322
case UFS_MOUNT_ONERROR_REPAIR:
323
printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n",
324
sb->s_id, function, error_buf);
328
void ufs_panic (struct super_block * sb, const char * function,
329
const char * fmt, ...)
331
struct ufs_sb_private_info * uspi;
332
struct ufs_super_block_first * usb1;
335
uspi = UFS_SB(sb)->s_uspi;
336
usb1 = ubh_get_usb_first(uspi);
338
if (!(sb->s_flags & MS_RDONLY)) {
339
usb1->fs_clean = UFS_FSBAD;
340
ubh_mark_buffer_dirty(USPI_UBH(uspi));
343
va_start (args, fmt);
344
vsnprintf (error_buf, sizeof(error_buf), fmt, args);
346
sb->s_flags |= MS_RDONLY;
347
printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n",
348
sb->s_id, function, error_buf);
351
void ufs_warning (struct super_block * sb, const char * function,
352
const char * fmt, ...)
356
va_start (args, fmt);
357
vsnprintf (error_buf, sizeof(error_buf), fmt, args);
359
printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n",
360
sb->s_id, function, error_buf);
364
Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
365
Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
366
Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
367
Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
368
Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
369
Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
370
Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
371
Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
372
Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
373
Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
374
Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
375
Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
376
Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
377
Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
381
static const match_table_t tokens = {
382
{Opt_type_old, "ufstype=old"},
383
{Opt_type_sunx86, "ufstype=sunx86"},
384
{Opt_type_sun, "ufstype=sun"},
385
{Opt_type_sunos, "ufstype=sunos"},
386
{Opt_type_44bsd, "ufstype=44bsd"},
387
{Opt_type_ufs2, "ufstype=ufs2"},
388
{Opt_type_ufs2, "ufstype=5xbsd"},
389
{Opt_type_hp, "ufstype=hp"},
390
{Opt_type_nextstepcd, "ufstype=nextstep-cd"},
391
{Opt_type_nextstep, "ufstype=nextstep"},
392
{Opt_type_openstep, "ufstype=openstep"},
393
/*end of possible ufs types */
394
{Opt_onerror_panic, "onerror=panic"},
395
{Opt_onerror_lock, "onerror=lock"},
396
{Opt_onerror_umount, "onerror=umount"},
397
{Opt_onerror_repair, "onerror=repair"},
401
static int ufs_parse_options (char * options, unsigned * mount_options)
410
while ((p = strsep(&options, ",")) != NULL) {
411
substring_t args[MAX_OPT_ARGS];
416
token = match_token(p, tokens, args);
419
ufs_clear_opt (*mount_options, UFSTYPE);
420
ufs_set_opt (*mount_options, UFSTYPE_OLD);
422
case Opt_type_sunx86:
423
ufs_clear_opt (*mount_options, UFSTYPE);
424
ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
427
ufs_clear_opt (*mount_options, UFSTYPE);
428
ufs_set_opt (*mount_options, UFSTYPE_SUN);
431
ufs_clear_opt(*mount_options, UFSTYPE);
432
ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
435
ufs_clear_opt (*mount_options, UFSTYPE);
436
ufs_set_opt (*mount_options, UFSTYPE_44BSD);
439
ufs_clear_opt(*mount_options, UFSTYPE);
440
ufs_set_opt(*mount_options, UFSTYPE_UFS2);
443
ufs_clear_opt (*mount_options, UFSTYPE);
444
ufs_set_opt (*mount_options, UFSTYPE_HP);
446
case Opt_type_nextstepcd:
447
ufs_clear_opt (*mount_options, UFSTYPE);
448
ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
450
case Opt_type_nextstep:
451
ufs_clear_opt (*mount_options, UFSTYPE);
452
ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
454
case Opt_type_openstep:
455
ufs_clear_opt (*mount_options, UFSTYPE);
456
ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
458
case Opt_onerror_panic:
459
ufs_clear_opt (*mount_options, ONERROR);
460
ufs_set_opt (*mount_options, ONERROR_PANIC);
462
case Opt_onerror_lock:
463
ufs_clear_opt (*mount_options, ONERROR);
464
ufs_set_opt (*mount_options, ONERROR_LOCK);
466
case Opt_onerror_umount:
467
ufs_clear_opt (*mount_options, ONERROR);
468
ufs_set_opt (*mount_options, ONERROR_UMOUNT);
470
case Opt_onerror_repair:
471
printk("UFS-fs: Unable to do repair on error, "
472
"will lock lock instead\n");
473
ufs_clear_opt (*mount_options, ONERROR);
474
ufs_set_opt (*mount_options, ONERROR_REPAIR);
477
printk("UFS-fs: Invalid option: \"%s\" "
478
"or missing value\n", p);
486
* Different types of UFS hold fs_cstotal in different
487
* places, and use different data structure for it.
488
* To make things simpler we just copy fs_cstotal to ufs_sb_private_info
490
static void ufs_setup_cstotal(struct super_block *sb)
492
struct ufs_sb_info *sbi = UFS_SB(sb);
493
struct ufs_sb_private_info *uspi = sbi->s_uspi;
494
struct ufs_super_block_first *usb1;
495
struct ufs_super_block_second *usb2;
496
struct ufs_super_block_third *usb3;
497
unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
499
UFSD("ENTER, mtype=%u\n", mtype);
500
usb1 = ubh_get_usb_first(uspi);
501
usb2 = ubh_get_usb_second(uspi);
502
usb3 = ubh_get_usb_third(uspi);
504
if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
505
(usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
506
mtype == UFS_MOUNT_UFSTYPE_UFS2) {
507
/*we have statistic in different place, then usual*/
508
uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
509
uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
510
uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
511
uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
513
uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
514
uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
515
uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
516
uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
522
* Read on-disk structures associated with cylinder groups
524
static int ufs_read_cylinder_structures(struct super_block *sb)
526
struct ufs_sb_info *sbi = UFS_SB(sb);
527
struct ufs_sb_private_info *uspi = sbi->s_uspi;
528
struct ufs_buffer_head * ubh;
529
unsigned char * base, * space;
530
unsigned size, blks, i;
531
struct ufs_super_block_third *usb3;
535
usb3 = ubh_get_usb_third(uspi);
537
* Read cs structures from (usually) first data block
540
size = uspi->s_cssize;
541
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
542
base = space = kmalloc(size, GFP_NOFS);
545
sbi->s_csp = (struct ufs_csum *)space;
546
for (i = 0; i < blks; i += uspi->s_fpb) {
547
size = uspi->s_bsize;
548
if (i + uspi->s_fpb > blks)
549
size = (blks - i) * uspi->s_fsize;
551
ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
556
ubh_ubhcpymem (space, ubh, size);
564
* Read cylinder group (we read only first fragment from block
565
* at this time) and prepare internal data structures for cg caching.
567
if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS)))
569
for (i = 0; i < uspi->s_ncg; i++)
570
sbi->s_ucg[i] = NULL;
571
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
572
sbi->s_ucpi[i] = NULL;
573
sbi->s_cgno[i] = UFS_CGNO_EMPTY;
575
for (i = 0; i < uspi->s_ncg; i++) {
576
UFSD("read cg %u\n", i);
577
if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
579
if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
582
ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
584
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
585
if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
587
sbi->s_cgno[i] = UFS_CGNO_EMPTY;
589
sbi->s_cg_loaded = 0;
596
for (i = 0; i < uspi->s_ncg; i++)
598
brelse (sbi->s_ucg[i]);
600
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
601
kfree (sbi->s_ucpi[i]);
603
UFSD("EXIT (FAILED)\n");
608
* Sync our internal copy of fs_cstotal with disk
610
static void ufs_put_cstotal(struct super_block *sb)
612
unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
613
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
614
struct ufs_super_block_first *usb1;
615
struct ufs_super_block_second *usb2;
616
struct ufs_super_block_third *usb3;
619
usb1 = ubh_get_usb_first(uspi);
620
usb2 = ubh_get_usb_second(uspi);
621
usb3 = ubh_get_usb_third(uspi);
623
if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
624
(usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
625
mtype == UFS_MOUNT_UFSTYPE_UFS2) {
626
/*we have statistic in different place, then usual*/
627
usb2->fs_un.fs_u2.cs_ndir =
628
cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
629
usb2->fs_un.fs_u2.cs_nbfree =
630
cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
631
usb3->fs_un1.fs_u2.cs_nifree =
632
cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
633
usb3->fs_un1.fs_u2.cs_nffree =
634
cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
636
usb1->fs_cstotal.cs_ndir =
637
cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
638
usb1->fs_cstotal.cs_nbfree =
639
cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
640
usb1->fs_cstotal.cs_nifree =
641
cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
642
usb1->fs_cstotal.cs_nffree =
643
cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
645
ubh_mark_buffer_dirty(USPI_UBH(uspi));
646
ufs_print_super_stuff(sb, usb1, usb2, usb3);
651
* ufs_put_super_internal() - put on-disk intrenal structures
652
* @sb: pointer to super_block structure
653
* Put on-disk structures associated with cylinder groups
654
* and write them back to disk, also update cs_total on disk
656
static void ufs_put_super_internal(struct super_block *sb)
658
struct ufs_sb_info *sbi = UFS_SB(sb);
659
struct ufs_sb_private_info *uspi = sbi->s_uspi;
660
struct ufs_buffer_head * ubh;
661
unsigned char * base, * space;
662
unsigned blks, size, i;
668
size = uspi->s_cssize;
669
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
670
base = space = (char*) sbi->s_csp;
671
for (i = 0; i < blks; i += uspi->s_fpb) {
672
size = uspi->s_bsize;
673
if (i + uspi->s_fpb > blks)
674
size = (blks - i) * uspi->s_fsize;
676
ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
678
ubh_memcpyubh (ubh, space, size);
680
ubh_mark_buffer_uptodate (ubh, 1);
681
ubh_mark_buffer_dirty (ubh);
684
for (i = 0; i < sbi->s_cg_loaded; i++) {
685
ufs_put_cylinder (sb, i);
686
kfree (sbi->s_ucpi[i]);
688
for (; i < UFS_MAX_GROUP_LOADED; i++)
689
kfree (sbi->s_ucpi[i]);
690
for (i = 0; i < uspi->s_ncg; i++)
691
brelse (sbi->s_ucg[i]);
698
static int ufs_fill_super(struct super_block *sb, void *data, int silent)
700
struct ufs_sb_info * sbi;
701
struct ufs_sb_private_info * uspi;
702
struct ufs_super_block_first * usb1;
703
struct ufs_super_block_second * usb2;
704
struct ufs_super_block_third * usb3;
705
struct ufs_buffer_head * ubh;
707
unsigned block_size, super_block_size;
709
unsigned super_block_offset;
719
sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
724
UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
726
#ifndef CONFIG_UFS_FS_WRITE
727
if (!(sb->s_flags & MS_RDONLY)) {
728
printk("ufs was compiled with read-only support, "
729
"can't be mounted as read-write\n");
733
mutex_init(&sbi->mutex);
735
* Set default mount options
736
* Parse mount options
738
sbi->s_mount_opt = 0;
739
ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
740
if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
741
printk("wrong mount options\n");
744
if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
746
printk("You didn't specify the type of your ufs filesystem\n\n"
747
"mount -t ufs -o ufstype="
748
"sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
749
">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
750
"default is ufstype=old\n");
751
ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
754
uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
758
uspi->s_dirblksize = UFS_SECTOR_SIZE;
759
super_block_offset=UFS_SBLOCK;
761
/* Keep 2Gig file limit. Some UFS variants need to override
762
this but as I don't know which I'll let those in the know loosen
764
switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
765
case UFS_MOUNT_UFSTYPE_44BSD:
766
UFSD("ufstype=44bsd\n");
767
uspi->s_fsize = block_size = 512;
768
uspi->s_fmask = ~(512 - 1);
770
uspi->s_sbsize = super_block_size = 1536;
772
flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
774
case UFS_MOUNT_UFSTYPE_UFS2:
775
UFSD("ufstype=ufs2\n");
776
super_block_offset=SBLOCK_UFS2;
777
uspi->s_fsize = block_size = 512;
778
uspi->s_fmask = ~(512 - 1);
780
uspi->s_sbsize = super_block_size = 1536;
782
flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
785
case UFS_MOUNT_UFSTYPE_SUN:
786
UFSD("ufstype=sun\n");
787
uspi->s_fsize = block_size = 1024;
788
uspi->s_fmask = ~(1024 - 1);
790
uspi->s_sbsize = super_block_size = 2048;
792
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
793
flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
796
case UFS_MOUNT_UFSTYPE_SUNOS:
797
UFSD(("ufstype=sunos\n"))
798
uspi->s_fsize = block_size = 1024;
799
uspi->s_fmask = ~(1024 - 1);
801
uspi->s_sbsize = 2048;
802
super_block_size = 2048;
804
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
805
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
808
case UFS_MOUNT_UFSTYPE_SUNx86:
809
UFSD("ufstype=sunx86\n");
810
uspi->s_fsize = block_size = 1024;
811
uspi->s_fmask = ~(1024 - 1);
813
uspi->s_sbsize = super_block_size = 2048;
815
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
816
flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
819
case UFS_MOUNT_UFSTYPE_OLD:
820
UFSD("ufstype=old\n");
821
uspi->s_fsize = block_size = 1024;
822
uspi->s_fmask = ~(1024 - 1);
824
uspi->s_sbsize = super_block_size = 2048;
826
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
827
if (!(sb->s_flags & MS_RDONLY)) {
829
printk(KERN_INFO "ufstype=old is supported read-only\n");
830
sb->s_flags |= MS_RDONLY;
834
case UFS_MOUNT_UFSTYPE_NEXTSTEP:
835
UFSD("ufstype=nextstep\n");
836
uspi->s_fsize = block_size = 1024;
837
uspi->s_fmask = ~(1024 - 1);
839
uspi->s_sbsize = super_block_size = 2048;
841
uspi->s_dirblksize = 1024;
842
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
843
if (!(sb->s_flags & MS_RDONLY)) {
845
printk(KERN_INFO "ufstype=nextstep is supported read-only\n");
846
sb->s_flags |= MS_RDONLY;
850
case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
851
UFSD("ufstype=nextstep-cd\n");
852
uspi->s_fsize = block_size = 2048;
853
uspi->s_fmask = ~(2048 - 1);
855
uspi->s_sbsize = super_block_size = 2048;
857
uspi->s_dirblksize = 1024;
858
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
859
if (!(sb->s_flags & MS_RDONLY)) {
861
printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n");
862
sb->s_flags |= MS_RDONLY;
866
case UFS_MOUNT_UFSTYPE_OPENSTEP:
867
UFSD("ufstype=openstep\n");
868
uspi->s_fsize = block_size = 1024;
869
uspi->s_fmask = ~(1024 - 1);
871
uspi->s_sbsize = super_block_size = 2048;
873
uspi->s_dirblksize = 1024;
874
flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
875
if (!(sb->s_flags & MS_RDONLY)) {
877
printk(KERN_INFO "ufstype=openstep is supported read-only\n");
878
sb->s_flags |= MS_RDONLY;
882
case UFS_MOUNT_UFSTYPE_HP:
883
UFSD("ufstype=hp\n");
884
uspi->s_fsize = block_size = 1024;
885
uspi->s_fmask = ~(1024 - 1);
887
uspi->s_sbsize = super_block_size = 2048;
889
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
890
if (!(sb->s_flags & MS_RDONLY)) {
892
printk(KERN_INFO "ufstype=hp is supported read-only\n");
893
sb->s_flags |= MS_RDONLY;
898
printk("unknown ufstype\n");
903
if (!sb_set_blocksize(sb, block_size)) {
904
printk(KERN_ERR "UFS: failed to set blocksize\n");
909
* read ufs super block from device
912
ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
917
usb1 = ubh_get_usb_first(uspi);
918
usb2 = ubh_get_usb_second(uspi);
919
usb3 = ubh_get_usb_third(uspi);
921
/* Sort out mod used on SunOS 4.1.3 for fs_state */
922
uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
923
if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
924
(uspi->s_postblformat != UFS_42POSTBLFMT)) {
925
flags &= ~UFS_ST_MASK;
930
* Check ufs magic number
932
sbi->s_bytesex = BYTESEX_LE;
933
switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
942
sbi->s_bytesex = BYTESEX_BE;
943
switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
953
if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
954
|| ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
955
|| ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
956
&& uspi->s_sbbase < 256) {
957
ubh_brelse_uspi(uspi);
963
printk("ufs_read_super: bad magic number\n");
968
* Check block and fragment sizes
970
uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
971
uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
972
uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
973
uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
974
uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
976
if (!is_power_of_2(uspi->s_fsize)) {
977
printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",
981
if (uspi->s_fsize < 512) {
982
printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n",
986
if (uspi->s_fsize > 4096) {
987
printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n",
991
if (!is_power_of_2(uspi->s_bsize)) {
992
printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",
996
if (uspi->s_bsize < 4096) {
997
printk(KERN_ERR "ufs_read_super: block size %u is too small\n",
1001
if (uspi->s_bsize / uspi->s_fsize > 8) {
1002
printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n",
1003
uspi->s_bsize / uspi->s_fsize);
1006
if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1007
ubh_brelse_uspi(uspi);
1009
block_size = uspi->s_fsize;
1010
super_block_size = uspi->s_sbsize;
1011
UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1015
sbi->s_flags = flags;/*after that line some functions use s_flags*/
1016
ufs_print_super_stuff(sb, usb1, usb2, usb3);
1019
* Check, if file system was correctly unmounted.
1020
* If not, make it read only.
1022
if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1023
((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1024
(((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1025
(flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1026
(flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1027
(ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1028
switch(usb1->fs_clean) {
1030
UFSD("fs is clean\n");
1033
UFSD("fs is stable\n");
1036
UFSD("fs is logging fs\n");
1039
UFSD("fs is DEC OSF/1\n");
1042
printk("ufs_read_super: fs is active\n");
1043
sb->s_flags |= MS_RDONLY;
1046
printk("ufs_read_super: fs is bad\n");
1047
sb->s_flags |= MS_RDONLY;
1050
printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean);
1051
sb->s_flags |= MS_RDONLY;
1055
printk("ufs_read_super: fs needs fsck\n");
1056
sb->s_flags |= MS_RDONLY;
1060
* Read ufs_super_block into internal data structures
1062
sb->s_op = &ufs_super_ops;
1063
sb->s_export_op = &ufs_export_ops;
1065
sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1067
uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1068
uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1069
uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1070
uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1071
uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1072
uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1074
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1075
uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1076
uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1078
uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1079
uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1082
uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1083
/* s_bsize already set */
1084
/* s_fsize already set */
1085
uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1086
uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1087
uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1088
uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1089
uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1090
uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1091
UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1093
uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1094
uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1095
/* s_sbsize already set */
1096
uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1097
uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1098
uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1099
uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1100
uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1101
uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1102
uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1103
uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1105
if (uspi->fs_magic == UFS2_MAGIC)
1106
uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1108
uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1110
uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1111
uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1112
uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1113
uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1114
uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1115
uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1116
uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1117
uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1118
uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1119
uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1120
uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1121
uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1122
uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1123
uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1126
* Compute another frequently used values
1128
uspi->s_fpbmask = uspi->s_fpb - 1;
1129
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1130
uspi->s_apbshift = uspi->s_bshift - 3;
1132
uspi->s_apbshift = uspi->s_bshift - 2;
1134
uspi->s_2apbshift = uspi->s_apbshift * 2;
1135
uspi->s_3apbshift = uspi->s_apbshift * 3;
1136
uspi->s_apb = 1 << uspi->s_apbshift;
1137
uspi->s_2apb = 1 << uspi->s_2apbshift;
1138
uspi->s_3apb = 1 << uspi->s_3apbshift;
1139
uspi->s_apbmask = uspi->s_apb - 1;
1140
uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1141
uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1142
uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1143
uspi->s_bpf = uspi->s_fsize << 3;
1144
uspi->s_bpfshift = uspi->s_fshift + 3;
1145
uspi->s_bpfmask = uspi->s_bpf - 1;
1146
if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1147
(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1148
uspi->s_maxsymlinklen =
1149
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1151
if (uspi->fs_magic == UFS2_MAGIC)
1152
maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1154
maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1155
if (uspi->s_maxsymlinklen > maxsymlen) {
1156
ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1157
"fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1158
uspi->s_maxsymlinklen = maxsymlen;
1161
inode = ufs_iget(sb, UFS_ROOTINO);
1162
if (IS_ERR(inode)) {
1163
ret = PTR_ERR(inode);
1166
sb->s_root = d_alloc_root(inode);
1172
ufs_setup_cstotal(sb);
1174
* Read cylinder group structures
1176
if (!(sb->s_flags & MS_RDONLY))
1177
if (!ufs_read_cylinder_structures(sb))
1187
ubh_brelse_uspi (uspi);
1190
sb->s_fs_info = NULL;
1191
UFSD("EXIT (FAILED)\n");
1195
UFSD("EXIT (NOMEM)\n");
1199
static int ufs_sync_fs(struct super_block *sb, int wait)
1201
struct ufs_sb_private_info * uspi;
1202
struct ufs_super_block_first * usb1;
1203
struct ufs_super_block_third * usb3;
1211
flags = UFS_SB(sb)->s_flags;
1212
uspi = UFS_SB(sb)->s_uspi;
1213
usb1 = ubh_get_usb_first(uspi);
1214
usb3 = ubh_get_usb_third(uspi);
1216
usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1217
if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1218
(flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1219
(flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1220
ufs_set_fs_state(sb, usb1, usb3,
1221
UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1222
ufs_put_cstotal(sb);
1232
static void ufs_write_super(struct super_block *sb)
1234
if (!(sb->s_flags & MS_RDONLY))
1240
static void ufs_put_super(struct super_block *sb)
1242
struct ufs_sb_info * sbi = UFS_SB(sb);
1247
ufs_write_super(sb);
1249
if (!(sb->s_flags & MS_RDONLY))
1250
ufs_put_super_internal(sb);
1252
ubh_brelse_uspi (sbi->s_uspi);
1253
kfree (sbi->s_uspi);
1255
sb->s_fs_info = NULL;
1261
static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1263
struct ufs_sb_private_info * uspi;
1264
struct ufs_super_block_first * usb1;
1265
struct ufs_super_block_third * usb3;
1266
unsigned new_mount_opt, ufstype;
1271
uspi = UFS_SB(sb)->s_uspi;
1272
flags = UFS_SB(sb)->s_flags;
1273
usb1 = ubh_get_usb_first(uspi);
1274
usb3 = ubh_get_usb_third(uspi);
1277
* Allow the "check" option to be passed as a remount option.
1278
* It is not possible to change ufstype option during remount
1280
ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1282
ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1283
if (!ufs_parse_options (data, &new_mount_opt)) {
1288
if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1289
new_mount_opt |= ufstype;
1290
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1291
printk("ufstype can't be changed during remount\n");
1297
if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1298
UFS_SB(sb)->s_mount_opt = new_mount_opt;
1305
* fs was mouted as rw, remounting ro
1307
if (*mount_flags & MS_RDONLY) {
1308
ufs_put_super_internal(sb);
1309
usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1310
if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1311
|| (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1312
|| (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1313
ufs_set_fs_state(sb, usb1, usb3,
1314
UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1315
ubh_mark_buffer_dirty (USPI_UBH(uspi));
1317
sb->s_flags |= MS_RDONLY;
1320
* fs was mounted as ro, remounting rw
1322
#ifndef CONFIG_UFS_FS_WRITE
1323
printk("ufs was compiled with read-only support, "
1324
"can't be mounted as read-write\n");
1329
if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1330
ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1331
ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1332
ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1333
ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1334
printk("this ufstype is read-only supported\n");
1339
if (!ufs_read_cylinder_structures(sb)) {
1340
printk("failed during remounting\n");
1345
sb->s_flags &= ~MS_RDONLY;
1348
UFS_SB(sb)->s_mount_opt = new_mount_opt;
1354
static int ufs_show_options(struct seq_file *seq, struct vfsmount *vfs)
1356
struct ufs_sb_info *sbi = UFS_SB(vfs->mnt_sb);
1357
unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1358
const struct match_token *tp = tokens;
1360
while (tp->token != Opt_onerror_panic && tp->token != mval)
1362
BUG_ON(tp->token == Opt_onerror_panic);
1363
seq_printf(seq, ",%s", tp->pattern);
1365
mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1366
while (tp->token != Opt_err && tp->token != mval)
1368
BUG_ON(tp->token == Opt_err);
1369
seq_printf(seq, ",%s", tp->pattern);
1374
static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1376
struct super_block *sb = dentry->d_sb;
1377
struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1378
unsigned flags = UFS_SB(sb)->s_flags;
1379
struct ufs_super_block_first *usb1;
1380
struct ufs_super_block_second *usb2;
1381
struct ufs_super_block_third *usb3;
1382
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1386
usb1 = ubh_get_usb_first(uspi);
1387
usb2 = ubh_get_usb_second(uspi);
1388
usb3 = ubh_get_usb_third(uspi);
1390
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1391
buf->f_type = UFS2_MAGIC;
1392
buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1394
buf->f_type = UFS_MAGIC;
1395
buf->f_blocks = uspi->s_dsize;
1397
buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1398
uspi->cs_total.cs_nffree;
1399
buf->f_ffree = uspi->cs_total.cs_nifree;
1400
buf->f_bsize = sb->s_blocksize;
1401
buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1402
? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1403
buf->f_files = uspi->s_ncg * uspi->s_ipg;
1404
buf->f_namelen = UFS_MAXNAMLEN;
1405
buf->f_fsid.val[0] = (u32)id;
1406
buf->f_fsid.val[1] = (u32)(id >> 32);
1413
static struct kmem_cache * ufs_inode_cachep;
1415
static struct inode *ufs_alloc_inode(struct super_block *sb)
1417
struct ufs_inode_info *ei;
1418
ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
1421
ei->vfs_inode.i_version = 1;
1422
return &ei->vfs_inode;
1425
static void ufs_i_callback(struct rcu_head *head)
1427
struct inode *inode = container_of(head, struct inode, i_rcu);
1428
INIT_LIST_HEAD(&inode->i_dentry);
1429
kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1432
static void ufs_destroy_inode(struct inode *inode)
1434
call_rcu(&inode->i_rcu, ufs_i_callback);
1437
static void init_once(void *foo)
1439
struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1441
inode_init_once(&ei->vfs_inode);
1444
static int init_inodecache(void)
1446
ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1447
sizeof(struct ufs_inode_info),
1448
0, (SLAB_RECLAIM_ACCOUNT|
1451
if (ufs_inode_cachep == NULL)
1456
static void destroy_inodecache(void)
1458
kmem_cache_destroy(ufs_inode_cachep);
1461
static const struct super_operations ufs_super_ops = {
1462
.alloc_inode = ufs_alloc_inode,
1463
.destroy_inode = ufs_destroy_inode,
1464
.write_inode = ufs_write_inode,
1465
.evict_inode = ufs_evict_inode,
1466
.put_super = ufs_put_super,
1467
.write_super = ufs_write_super,
1468
.sync_fs = ufs_sync_fs,
1469
.statfs = ufs_statfs,
1470
.remount_fs = ufs_remount,
1471
.show_options = ufs_show_options,
1474
static struct dentry *ufs_mount(struct file_system_type *fs_type,
1475
int flags, const char *dev_name, void *data)
1477
return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1480
static struct file_system_type ufs_fs_type = {
1481
.owner = THIS_MODULE,
1484
.kill_sb = kill_block_super,
1485
.fs_flags = FS_REQUIRES_DEV,
1488
static int __init init_ufs_fs(void)
1490
int err = init_inodecache();
1493
err = register_filesystem(&ufs_fs_type);
1498
destroy_inodecache();
1503
static void __exit exit_ufs_fs(void)
1505
unregister_filesystem(&ufs_fs_type);
1506
destroy_inodecache();
1509
module_init(init_ufs_fs)
1510
module_exit(exit_ufs_fs)
1511
MODULE_LICENSE("GPL");