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Merge tag 'iommu-fixes-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
[deliverable/linux.git] / fs / ufs / super.c
CommitLineData
1da177e4
LT		 1/*
2 * linux/fs/ufs/super.c
3 *
4 * Copyright (C) 1998
5 * Daniel Pirkl <daniel.pirkl@email.cz>
6 * Charles University, Faculty of Mathematics and Physics
7 */
8
9/* Derived from
10 *
11 * linux/fs/ext2/super.c
12 *
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)
17 *
18 * from
19 *
20 * linux/fs/minix/inode.c
21 *
22 * Copyright (C) 1991, 1992 Linus Torvalds
23 *
24 * Big-endian to little-endian byte-swapping/bitmaps by
25 * David S. Miller (davem@caip.rutgers.edu), 1995
26 */
27
28/*
29 * Inspired by
30 *
31 * linux/fs/ufs/super.c
32 *
33 * Copyright (C) 1996
34 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
35 * Laboratory for Computer Science Research Computing Facility
36 * Rutgers, The State University of New Jersey
37 *
38 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
39 *
40 * Kernel module support added on 96/04/26 by
41 * Stefan Reinauer <stepan@home.culture.mipt.ru>
42 *
43 * Module usage counts added on 96/04/29 by
f762dd68 44 * Gertjan van Wingerde <gwingerde@gmail.com>
1da177e4
LT		 45 *
46 * Clean swab support on 19970406 by
47 * Francois-Rene Rideau <fare@tunes.org>
48 *
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>.
52 *
53 * NeXTstep support added on February 5th 1998 by
54 * Niels Kristian Bech Jensen <nkbj@image.dk>.
55 *
56 * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
57 *
58 * HP/UX hfs filesystem support added by
59 * Martin K. Petersen <mkp@mkp.net>, August 1999
60 *
61 * UFS2 (of FreeBSD 5.x) support added by
62 * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
63 *
cbcae39f
ED		 64 * UFS2 write support added by
65 * Evgeniy Dushistov <dushistov@mail.ru>, 2007
1da177e4
LT		 66 */
67
f3e2a520 68#include <linux/exportfs.h>
1da177e4
LT		 69#include <linux/module.h>
70#include <linux/bitops.h>
71
72#include <stdarg.h>
73
74#include <asm/uaccess.h>
1da177e4
LT		 75
76#include <linux/errno.h>
77#include <linux/fs.h>
1da177e4
LT		 78#include <linux/slab.h>
79#include <linux/time.h>
80#include <linux/stat.h>
81#include <linux/string.h>
82#include <linux/blkdev.h>
66114cad 83#include <linux/backing-dev.h>
1da177e4
LT		 84#include <linux/init.h>
85#include <linux/parser.h>
1da177e4
LT		 86#include <linux/buffer_head.h>
87#include <linux/vfs.h>
9e8c4273 88#include <linux/log2.h>
2a9807c0
ED		 89#include <linux/mount.h>
90#include <linux/seq_file.h>
1da177e4 91
e5420598 92#include "ufs_fs.h"
bcd6d4ec 93#include "ufs.h"
1da177e4
LT		 94#include "swab.h"
95#include "util.h"
96
788257d6
AB		 97void lock_ufs(struct super_block *sb)
98{
788257d6
AB		 99 struct ufs_sb_info *sbi = UFS_SB(sb);
100
101 mutex_lock(&sbi->mutex);
102 sbi->mutex_owner = current;
788257d6
AB		 103}
104
105void unlock_ufs(struct super_block *sb)
106{
788257d6
AB		 107 struct ufs_sb_info *sbi = UFS_SB(sb);
108
109 sbi->mutex_owner = NULL;
110 mutex_unlock(&sbi->mutex);
788257d6
AB		 111}
112
f3e2a520
AD		 113static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
114{
115 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
116 struct inode *inode;
117
118 if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg)
119 return ERR_PTR(-ESTALE);
120
121 inode = ufs_iget(sb, ino);
122 if (IS_ERR(inode))
123 return ERR_CAST(inode);
124 if (generation && inode->i_generation != generation) {
125 iput(inode);
126 return ERR_PTR(-ESTALE);
127 }
128 return inode;
129}
130
131static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
132 int fh_len, int fh_type)
133{
134 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
135}
136
137static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
138 int fh_len, int fh_type)
139{
140 return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
141}
142
143static struct dentry *ufs_get_parent(struct dentry *child)
144{
26fe5750 145 struct qstr dot_dot = QSTR_INIT("..", 2);
f3e2a520
AD		 146 ino_t ino;
147
2b0143b5 148 ino = ufs_inode_by_name(d_inode(child), &dot_dot);
f3e2a520
AD		 149 if (!ino)
150 return ERR_PTR(-ENOENT);
2b0143b5 151 return d_obtain_alias(ufs_iget(d_inode(child)->i_sb, ino));
f3e2a520
AD		 152}
153
154static const struct export_operations ufs_export_ops = {
155 .fh_to_dentry = ufs_fh_to_dentry,
156 .fh_to_parent = ufs_fh_to_parent,
157 .get_parent = ufs_get_parent,
158};
159
abf5d15f 160#ifdef CONFIG_UFS_DEBUG
1da177e4
LT		 161/*
162 * Print contents of ufs_super_block, useful for debugging
163 */
3313e292 164static void ufs_print_super_stuff(struct super_block *sb,
647b7e87
ED		 165 struct ufs_super_block_first *usb1,
166 struct ufs_super_block_second *usb2,
167 struct ufs_super_block_third *usb3)
1da177e4 168{
3313e292
ED		 169 u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
170
a9814c5d
FF		 171 pr_debug("ufs_print_super_stuff\n");
172 pr_debug(" magic: 0x%x\n", magic);
3313e292 173 if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
a9814c5d
FF		 174 pr_debug(" fs_size: %llu\n", (unsigned long long)
175 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
176 pr_debug(" fs_dsize: %llu\n", (unsigned long long)
177 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
178 pr_debug(" bsize: %u\n",
179 fs32_to_cpu(sb, usb1->fs_bsize));
180 pr_debug(" fsize: %u\n",
181 fs32_to_cpu(sb, usb1->fs_fsize));
182 pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
183 pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
184 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
185 pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
186 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
187 pr_debug(" cs_nbfree(No of free blocks): %llu\n",
188 (unsigned long long)
189 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
190 pr_info(" cs_nifree(Num of free inodes): %llu\n",
191 (unsigned long long)
192 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
193 pr_info(" cs_nffree(Num of free frags): %llu\n",
194 (unsigned long long)
195 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
196 pr_info(" fs_maxsymlinklen: %u\n",
197 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
647b7e87 198 } else {
a9814c5d
FF		 199 pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
200 pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
201 pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
202 pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
203 pr_debug(" cgoffset: %u\n",
204 fs32_to_cpu(sb, usb1->fs_cgoffset));
205 pr_debug(" ~cgmask: 0x%x\n",
206 ~fs32_to_cpu(sb, usb1->fs_cgmask));
207 pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
208 pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
209 pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
210 pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
211 pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
212 pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
213 pr_debug(" fragshift: %u\n",
214 fs32_to_cpu(sb, usb1->fs_fragshift));
215 pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
216 pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
217 pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
218 pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
219 pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
220 pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
221 pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
222 pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
223 pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
224 pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
225 pr_debug(" fstodb: %u\n",
226 fs32_to_cpu(sb, usb1->fs_fsbtodb));
227 pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
228 pr_debug(" ndir %u\n",
229 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
230 pr_debug(" nifree %u\n",
231 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
232 pr_debug(" nbfree %u\n",
233 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
234 pr_debug(" nffree %u\n",
235 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
647b7e87 236 }
a9814c5d 237 pr_debug("\n");
1da177e4
LT		 238}
239
240/*
241 * Print contents of ufs_cylinder_group, useful for debugging
242 */
647b7e87
ED		 243static void ufs_print_cylinder_stuff(struct super_block *sb,
244 struct ufs_cylinder_group *cg)
1da177e4 245{
a9814c5d
FF		 246 pr_debug("\nufs_print_cylinder_stuff\n");
247 pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
248 pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
249 pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
250 pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
251 pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
252 pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
253 pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
254 pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
255 pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
256 pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
257 pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
258 pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
259 pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
260 pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
261 pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
1da177e4
LT		 262 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
263 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
264 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
265 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
a9814c5d
FF		 266 pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
267 pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
268 pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
269 pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
270 pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
271 pr_debug(" clustersumoff %u\n",
272 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
273 pr_debug(" clusteroff %u\n",
274 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
275 pr_debug(" nclusterblks %u\n",
276 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
277 pr_debug("\n");
1da177e4 278}
647b7e87 279#else
3313e292 280# define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
647b7e87 281# define ufs_print_cylinder_stuff(sb, cg) /**/
abf5d15f 282#endif /* CONFIG_UFS_DEBUG */
1da177e4 283
ee9b6d61 284static const struct super_operations ufs_super_ops;
1da177e4 285
1da177e4
LT		 286void ufs_error (struct super_block * sb, const char * function,
287 const char * fmt, ...)
288{
289 struct ufs_sb_private_info * uspi;
290 struct ufs_super_block_first * usb1;
7e1e4167 291 struct va_format vaf;
1da177e4
LT		 292 va_list args;
293
294 uspi = UFS_SB(sb)->s_uspi;
7b4ee73e 295 usb1 = ubh_get_usb_first(uspi);
1da177e4
LT		 296
297 if (!(sb->s_flags & MS_RDONLY)) {
298 usb1->fs_clean = UFS_FSBAD;
9695ef16 299 ubh_mark_buffer_dirty(USPI_UBH(uspi));
9e9ad5f4 300 ufs_mark_sb_dirty(sb);
1da177e4
LT		 301 sb->s_flags |= MS_RDONLY;
302 }
7e1e4167
FF		 303 va_start(args, fmt);
304 vaf.fmt = fmt;
305 vaf.va = &args;
1da177e4
LT		 306 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
307 case UFS_MOUNT_ONERROR_PANIC:
7e1e4167
FF		 308 panic("panic (device %s): %s: %pV\n",
309 sb->s_id, function, &vaf);
1da177e4
LT		 310
311 case UFS_MOUNT_ONERROR_LOCK:
312 case UFS_MOUNT_ONERROR_UMOUNT:
313 case UFS_MOUNT_ONERROR_REPAIR:
7e1e4167
FF		 314 pr_crit("error (device %s): %s: %pV\n",
315 sb->s_id, function, &vaf);
316 }
317 va_end(args);
1da177e4
LT		 318}
319
320void ufs_panic (struct super_block * sb, const char * function,
321 const char * fmt, ...)
322{
323 struct ufs_sb_private_info * uspi;
324 struct ufs_super_block_first * usb1;
7e1e4167 325 struct va_format vaf;
1da177e4
LT		 326 va_list args;
327
328 uspi = UFS_SB(sb)->s_uspi;
7b4ee73e 329 usb1 = ubh_get_usb_first(uspi);
1da177e4
LT		 330
331 if (!(sb->s_flags & MS_RDONLY)) {
332 usb1->fs_clean = UFS_FSBAD;
9695ef16 333 ubh_mark_buffer_dirty(USPI_UBH(uspi));
9e9ad5f4 334 ufs_mark_sb_dirty(sb);
1da177e4 335 }
7e1e4167
FF		 336 va_start(args, fmt);
337 vaf.fmt = fmt;
338 vaf.va = &args;
1da177e4 339 sb->s_flags |= MS_RDONLY;
7e1e4167
FF		 340 pr_crit("panic (device %s): %s: %pV\n",
341 sb->s_id, function, &vaf);
342 va_end(args);
1da177e4
LT		 343}
344
345void ufs_warning (struct super_block * sb, const char * function,
346 const char * fmt, ...)
347{
7e1e4167 348 struct va_format vaf;
1da177e4
LT		 349 va_list args;
350
7e1e4167
FF		 351 va_start(args, fmt);
352 vaf.fmt = fmt;
353 vaf.va = &args;
354 pr_warn("(device %s): %s: %pV\n",
355 sb->s_id, function, &vaf);
356 va_end(args);
1da177e4
LT		 357}
358
359enum {
2a9807c0
ED		 360 Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
361 Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
362 Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
363 Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
364 Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
365 Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
366 Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
367 Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
368 Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
369 Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
370 Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
371 Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
372 Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
373 Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
374 Opt_err
1da177e4
LT		 375};
376
a447c093 377static const match_table_t tokens = {
1da177e4
LT		 378 {Opt_type_old, "ufstype=old"},
379 {Opt_type_sunx86, "ufstype=sunx86"},
380 {Opt_type_sun, "ufstype=sun"},
252e211e 381 {Opt_type_sunos, "ufstype=sunos"},
1da177e4
LT		 382 {Opt_type_44bsd, "ufstype=44bsd"},
383 {Opt_type_ufs2, "ufstype=ufs2"},
384 {Opt_type_ufs2, "ufstype=5xbsd"},
385 {Opt_type_hp, "ufstype=hp"},
386 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
387 {Opt_type_nextstep, "ufstype=nextstep"},
388 {Opt_type_openstep, "ufstype=openstep"},
2a9807c0 389/*end of possible ufs types */
1da177e4
LT		 390 {Opt_onerror_panic, "onerror=panic"},
391 {Opt_onerror_lock, "onerror=lock"},
392 {Opt_onerror_umount, "onerror=umount"},
393 {Opt_onerror_repair, "onerror=repair"},
394 {Opt_err, NULL}
395};
396
397static int ufs_parse_options (char * options, unsigned * mount_options)
398{
399 char * p;
400
abf5d15f 401 UFSD("ENTER\n");
1da177e4
LT		 402
403 if (!options)
404 return 1;
405
406 while ((p = strsep(&options, ",")) != NULL) {
407 substring_t args[MAX_OPT_ARGS];
408 int token;
409 if (!*p)
410 continue;
411
412 token = match_token(p, tokens, args);
413 switch (token) {
414 case Opt_type_old:
415 ufs_clear_opt (*mount_options, UFSTYPE);
416 ufs_set_opt (*mount_options, UFSTYPE_OLD);
417 break;
418 case Opt_type_sunx86:
419 ufs_clear_opt (*mount_options, UFSTYPE);
420 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
421 break;
422 case Opt_type_sun:
423 ufs_clear_opt (*mount_options, UFSTYPE);
424 ufs_set_opt (*mount_options, UFSTYPE_SUN);
425 break;
252e211e
MF		 426 case Opt_type_sunos:
427 ufs_clear_opt(*mount_options, UFSTYPE);
428 ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
429 break;
1da177e4
LT		 430 case Opt_type_44bsd:
431 ufs_clear_opt (*mount_options, UFSTYPE);
432 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
433 break;
434 case Opt_type_ufs2:
435 ufs_clear_opt(*mount_options, UFSTYPE);
436 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
437 break;
438 case Opt_type_hp:
439 ufs_clear_opt (*mount_options, UFSTYPE);
440 ufs_set_opt (*mount_options, UFSTYPE_HP);
441 break;
442 case Opt_type_nextstepcd:
443 ufs_clear_opt (*mount_options, UFSTYPE);
444 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
445 break;
446 case Opt_type_nextstep:
447 ufs_clear_opt (*mount_options, UFSTYPE);
448 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
449 break;
450 case Opt_type_openstep:
451 ufs_clear_opt (*mount_options, UFSTYPE);
452 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
453 break;
454 case Opt_onerror_panic:
455 ufs_clear_opt (*mount_options, ONERROR);
456 ufs_set_opt (*mount_options, ONERROR_PANIC);
457 break;
458 case Opt_onerror_lock:
459 ufs_clear_opt (*mount_options, ONERROR);
460 ufs_set_opt (*mount_options, ONERROR_LOCK);
461 break;
462 case Opt_onerror_umount:
463 ufs_clear_opt (*mount_options, ONERROR);
464 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
465 break;
466 case Opt_onerror_repair:
de771bda 467 pr_err("Unable to do repair on error, will lock lock instead\n");
1da177e4
LT		 468 ufs_clear_opt (*mount_options, ONERROR);
469 ufs_set_opt (*mount_options, ONERROR_REPAIR);
470 break;
471 default:
de771bda 472 pr_err("Invalid option: \"%s\" or missing value\n", p);
1da177e4
LT		 473 return 0;
474 }
475 }
476 return 1;
477}
478
479/*
25985edc
LDM		 480 * Different types of UFS hold fs_cstotal in different
481 * places, and use different data structure for it.
482 * To make things simpler we just copy fs_cstotal to ufs_sb_private_info
1da177e4 483 */
ee3ffd6c 484static void ufs_setup_cstotal(struct super_block *sb)
e295cfcb 485{
647b7e87
ED		 486 struct ufs_sb_info *sbi = UFS_SB(sb);
487 struct ufs_sb_private_info *uspi = sbi->s_uspi;
ee3ffd6c
ED		 488 struct ufs_super_block_first *usb1;
489 struct ufs_super_block_second *usb2;
647b7e87 490 struct ufs_super_block_third *usb3;
ee3ffd6c
ED		 491 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
492
493 UFSD("ENTER, mtype=%u\n", mtype);
494 usb1 = ubh_get_usb_first(uspi);
495 usb2 = ubh_get_usb_second(uspi);
496 usb3 = ubh_get_usb_third(uspi);
497
498 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
499 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
500 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
501 /*we have statistic in different place, then usual*/
502 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
503 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
504 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
505 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
506 } else {
507 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
508 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
509 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
510 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
511 }
512 UFSD("EXIT\n");
513}
514
515/*
516 * Read on-disk structures associated with cylinder groups
517 */
518static int ufs_read_cylinder_structures(struct super_block *sb)
519{
520 struct ufs_sb_info *sbi = UFS_SB(sb);
521 struct ufs_sb_private_info *uspi = sbi->s_uspi;
1da177e4
LT		 522 struct ufs_buffer_head * ubh;
523 unsigned char * base, * space;
524 unsigned size, blks, i;
ee3ffd6c 525
abf5d15f 526 UFSD("ENTER\n");
1da177e4 527
1da177e4
LT		 528 /*
529 * Read cs structures from (usually) first data block
530 * on the device.
531 */
532 size = uspi->s_cssize;
533 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
788257d6 534 base = space = kmalloc(size, GFP_NOFS);
1da177e4
LT		 535 if (!base)
536 goto failed;
e295cfcb 537 sbi->s_csp = (struct ufs_csum *)space;
1da177e4
LT		 538 for (i = 0; i < blks; i += uspi->s_fpb) {
539 size = uspi->s_bsize;
540 if (i + uspi->s_fpb > blks)
541 size = (blks - i) * uspi->s_fsize;
542
3313e292 543 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
7b4ee73e
E		 544
545 if (!ubh)
546 goto failed;
547
548 ubh_ubhcpymem (space, ubh, size);
7b4ee73e 549
1da177e4
LT		 550 space += size;
551 ubh_brelse (ubh);
552 ubh = NULL;
553 }
554
555 /*
556 * Read cylinder group (we read only first fragment from block
557 * at this time) and prepare internal data structures for cg caching.
558 */
788257d6 559 if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS)))
1da177e4
LT		 560 goto failed;
561 for (i = 0; i < uspi->s_ncg; i++)
562 sbi->s_ucg[i] = NULL;
563 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
564 sbi->s_ucpi[i] = NULL;
565 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
566 }
567 for (i = 0; i < uspi->s_ncg; i++) {
abf5d15f 568 UFSD("read cg %u\n", i);
1da177e4
LT		 569 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
570 goto failed;
571 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
572 goto failed;
647b7e87 573
1da177e4 574 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
1da177e4
LT		 575 }
576 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
788257d6 577 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
1da177e4
LT		 578 goto failed;
579 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
580 }
581 sbi->s_cg_loaded = 0;
abf5d15f 582 UFSD("EXIT\n");
1da177e4
LT		 583 return 1;
584
585failed:
f99d49ad 586 kfree (base);
1da177e4
LT		 587 if (sbi->s_ucg) {
588 for (i = 0; i < uspi->s_ncg; i++)
f99d49ad
JJ		 589 if (sbi->s_ucg[i])
590 brelse (sbi->s_ucg[i]);
1da177e4
LT		 591 kfree (sbi->s_ucg);
592 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
f99d49ad 593 kfree (sbi->s_ucpi[i]);
1da177e4 594 }
abf5d15f 595 UFSD("EXIT (FAILED)\n");
1da177e4
LT		 596 return 0;
597}
598
599/*
ee3ffd6c 600 * Sync our internal copy of fs_cstotal with disk
1da177e4 601 */
ee3ffd6c 602static void ufs_put_cstotal(struct super_block *sb)
e295cfcb 603{
ee3ffd6c
ED		 604 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
605 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
606 struct ufs_super_block_first *usb1;
607 struct ufs_super_block_second *usb2;
608 struct ufs_super_block_third *usb3;
609
610 UFSD("ENTER\n");
611 usb1 = ubh_get_usb_first(uspi);
612 usb2 = ubh_get_usb_second(uspi);
613 usb3 = ubh_get_usb_third(uspi);
614
615 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
616 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
617 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
618 /*we have statistic in different place, then usual*/
619 usb2->fs_un.fs_u2.cs_ndir =
620 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
621 usb2->fs_un.fs_u2.cs_nbfree =
622 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
623 usb3->fs_un1.fs_u2.cs_nifree =
624 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
625 usb3->fs_un1.fs_u2.cs_nffree =
626 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
627 } else {
628 usb1->fs_cstotal.cs_ndir =
629 cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
630 usb1->fs_cstotal.cs_nbfree =
631 cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
632 usb1->fs_cstotal.cs_nifree =
633 cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
634 usb1->fs_cstotal.cs_nffree =
635 cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
636 }
637 ubh_mark_buffer_dirty(USPI_UBH(uspi));
3313e292 638 ufs_print_super_stuff(sb, usb1, usb2, usb3);
ee3ffd6c
ED		 639 UFSD("EXIT\n");
640}
641
642/**
643 * ufs_put_super_internal() - put on-disk intrenal structures
644 * @sb: pointer to super_block structure
645 * Put on-disk structures associated with cylinder groups
646 * and write them back to disk, also update cs_total on disk
647 */
648static void ufs_put_super_internal(struct super_block *sb)
649{
650 struct ufs_sb_info *sbi = UFS_SB(sb);
651 struct ufs_sb_private_info *uspi = sbi->s_uspi;
1da177e4
LT		 652 struct ufs_buffer_head * ubh;
653 unsigned char * base, * space;
654 unsigned blks, size, i;
ee3ffd6c 655
1da177e4 656
abf5d15f 657 UFSD("ENTER\n");
6cfd0148 658
ee3ffd6c 659 ufs_put_cstotal(sb);
1da177e4
LT		 660 size = uspi->s_cssize;
661 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
e295cfcb 662 base = space = (char*) sbi->s_csp;
1da177e4
LT		 663 for (i = 0; i < blks; i += uspi->s_fpb) {
664 size = uspi->s_bsize;
665 if (i + uspi->s_fpb > blks)
666 size = (blks - i) * uspi->s_fsize;
3313e292 667
1da177e4 668 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
3313e292 669
1da177e4
LT		 670 ubh_memcpyubh (ubh, space, size);
671 space += size;
672 ubh_mark_buffer_uptodate (ubh, 1);
673 ubh_mark_buffer_dirty (ubh);
674 ubh_brelse (ubh);
675 }
676 for (i = 0; i < sbi->s_cg_loaded; i++) {
677 ufs_put_cylinder (sb, i);
678 kfree (sbi->s_ucpi[i]);
679 }
680 for (; i < UFS_MAX_GROUP_LOADED; i++)
681 kfree (sbi->s_ucpi[i]);
682 for (i = 0; i < uspi->s_ncg; i++)
683 brelse (sbi->s_ucg[i]);
684 kfree (sbi->s_ucg);
685 kfree (base);
6cfd0148 686
abf5d15f 687 UFSD("EXIT\n");
1da177e4
LT		 688}
689
7bd54ef7
AB		 690static int ufs_sync_fs(struct super_block *sb, int wait)
691{
692 struct ufs_sb_private_info * uspi;
693 struct ufs_super_block_first * usb1;
694 struct ufs_super_block_third * usb3;
695 unsigned flags;
696
697 lock_ufs(sb);
7bd54ef7
AB		 698
699 UFSD("ENTER\n");
700
701 flags = UFS_SB(sb)->s_flags;
702 uspi = UFS_SB(sb)->s_uspi;
703 usb1 = ubh_get_usb_first(uspi);
704 usb3 = ubh_get_usb_third(uspi);
705
706 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
707 if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
708 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
709 (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
710 ufs_set_fs_state(sb, usb1, usb3,
711 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
712 ufs_put_cstotal(sb);
7bd54ef7
AB		 713
714 UFSD("EXIT\n");
7bd54ef7
AB		 715 unlock_ufs(sb);
716
717 return 0;
718}
719
9e9ad5f4 720static void delayed_sync_fs(struct work_struct *work)
7bd54ef7 721{
9e9ad5f4
AB		 722 struct ufs_sb_info *sbi;
723
724 sbi = container_of(work, struct ufs_sb_info, sync_work.work);
725
726 spin_lock(&sbi->work_lock);
727 sbi->work_queued = 0;
728 spin_unlock(&sbi->work_lock);
729
730 ufs_sync_fs(sbi->sb, 1);
731}
732
733void ufs_mark_sb_dirty(struct super_block *sb)
734{
735 struct ufs_sb_info *sbi = UFS_SB(sb);
736 unsigned long delay;
737
738 spin_lock(&sbi->work_lock);
739 if (!sbi->work_queued) {
740 delay = msecs_to_jiffies(dirty_writeback_interval * 10);
741 queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
742 sbi->work_queued = 1;
743 }
744 spin_unlock(&sbi->work_lock);
7bd54ef7
AB		 745}
746
747static void ufs_put_super(struct super_block *sb)
748{
749 struct ufs_sb_info * sbi = UFS_SB(sb);
750
751 UFSD("ENTER\n");
752
753 if (!(sb->s_flags & MS_RDONLY))
754 ufs_put_super_internal(sb);
9e9ad5f4 755 cancel_delayed_work_sync(&sbi->sync_work);
7bd54ef7
AB		 756
757 ubh_brelse_uspi (sbi->s_uspi);
758 kfree (sbi->s_uspi);
0244756e 759 mutex_destroy(&sbi->mutex);
7bd54ef7
AB		 760 kfree (sbi);
761 sb->s_fs_info = NULL;
762 UFSD("EXIT\n");
763 return;
764}
765
1da177e4
LT		 766static int ufs_fill_super(struct super_block *sb, void *data, int silent)
767{
768 struct ufs_sb_info * sbi;
769 struct ufs_sb_private_info * uspi;
770 struct ufs_super_block_first * usb1;
771 struct ufs_super_block_second * usb2;
772 struct ufs_super_block_third * usb3;
1da177e4
LT		 773 struct ufs_buffer_head * ubh;
774 struct inode *inode;
775 unsigned block_size, super_block_size;
776 unsigned flags;
7b4ee73e 777 unsigned super_block_offset;
9e6766cc 778 unsigned maxsymlen;
b55c460d 779 int ret = -EINVAL;
1da177e4
LT		 780
781 uspi = NULL;
782 ubh = NULL;
783 flags = 0;
784
abf5d15f 785 UFSD("ENTER\n");
0244756e
FF		 786
787#ifndef CONFIG_UFS_FS_WRITE
788 if (!(sb->s_flags & MS_RDONLY)) {
a9814c5d 789 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
0244756e
FF		 790 return -EROFS;
791 }
792#endif
1da177e4 793
f8314dc6 794 sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
1da177e4
LT		 795 if (!sbi)
796 goto failed_nomem;
797 sb->s_fs_info = sbi;
9e9ad5f4 798 sbi->sb = sb;
1da177e4 799
abf5d15f 800 UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
1da177e4 801
788257d6 802 mutex_init(&sbi->mutex);
9e9ad5f4
AB		 803 spin_lock_init(&sbi->work_lock);
804 INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
1da177e4
LT		 805 /*
806 * Set default mount options
807 * Parse mount options
808 */
809 sbi->s_mount_opt = 0;
810 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
811 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
a9814c5d 812 pr_err("wrong mount options\n");
1da177e4
LT		 813 goto failed;
814 }
815 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
816 if (!silent)
a9814c5d 817 pr_err("You didn't specify the type of your ufs filesystem\n\n"
1da177e4 818 "mount -t ufs -o ufstype="
c690a722 819 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
1da177e4
LT		 820 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
821 "default is ufstype=old\n");
822 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
823 }
824
252e211e
MF		 825 uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
826 sbi->s_uspi = uspi;
1da177e4
LT		 827 if (!uspi)
828 goto failed;
f336953b 829 uspi->s_dirblksize = UFS_SECTOR_SIZE;
7b4ee73e
E		 830 super_block_offset=UFS_SBLOCK;
831
1da177e4
LT		 832 /* Keep 2Gig file limit. Some UFS variants need to override
833 this but as I don't know which I'll let those in the know loosen
834 the rules */
1da177e4
LT		 835 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
836 case UFS_MOUNT_UFSTYPE_44BSD:
abf5d15f 837 UFSD("ufstype=44bsd\n");
1da177e4
LT		 838 uspi->s_fsize = block_size = 512;
839 uspi->s_fmask = ~(512 - 1);
840 uspi->s_fshift = 9;
841 uspi->s_sbsize = super_block_size = 1536;
842 uspi->s_sbbase = 0;
843 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
844 break;
845 case UFS_MOUNT_UFSTYPE_UFS2:
abf5d15f 846 UFSD("ufstype=ufs2\n");
7b4ee73e 847 super_block_offset=SBLOCK_UFS2;
1da177e4
LT		 848 uspi->s_fsize = block_size = 512;
849 uspi->s_fmask = ~(512 - 1);
850 uspi->s_fshift = 9;
851 uspi->s_sbsize = super_block_size = 1536;
852 uspi->s_sbbase = 0;
853 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
1da177e4
LT		 854 break;
855
856 case UFS_MOUNT_UFSTYPE_SUN:
abf5d15f 857 UFSD("ufstype=sun\n");
1da177e4
LT		 858 uspi->s_fsize = block_size = 1024;
859 uspi->s_fmask = ~(1024 - 1);
860 uspi->s_fshift = 10;
861 uspi->s_sbsize = super_block_size = 2048;
862 uspi->s_sbbase = 0;
252e211e 863 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
1da177e4
LT		 864 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
865 break;
866
252e211e 867 case UFS_MOUNT_UFSTYPE_SUNOS:
d4beaabd 868 UFSD("ufstype=sunos\n");
252e211e
MF		 869 uspi->s_fsize = block_size = 1024;
870 uspi->s_fmask = ~(1024 - 1);
871 uspi->s_fshift = 10;
872 uspi->s_sbsize = 2048;
873 super_block_size = 2048;
874 uspi->s_sbbase = 0;
875 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
876 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
877 break;
878
1da177e4 879 case UFS_MOUNT_UFSTYPE_SUNx86:
abf5d15f 880 UFSD("ufstype=sunx86\n");
1da177e4
LT		 881 uspi->s_fsize = block_size = 1024;
882 uspi->s_fmask = ~(1024 - 1);
883 uspi->s_fshift = 10;
884 uspi->s_sbsize = super_block_size = 2048;
885 uspi->s_sbbase = 0;
252e211e 886 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
1da177e4
LT		 887 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
888 break;
889
890 case UFS_MOUNT_UFSTYPE_OLD:
abf5d15f 891 UFSD("ufstype=old\n");
1da177e4
LT		 892 uspi->s_fsize = block_size = 1024;
893 uspi->s_fmask = ~(1024 - 1);
894 uspi->s_fshift = 10;
895 uspi->s_sbsize = super_block_size = 2048;
896 uspi->s_sbbase = 0;
897 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
898 if (!(sb->s_flags & MS_RDONLY)) {
899 if (!silent)
a9814c5d 900 pr_info("ufstype=old is supported read-only\n");
1da177e4
LT		 901 sb->s_flags |= MS_RDONLY;
902 }
903 break;
904
905 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
abf5d15f 906 UFSD("ufstype=nextstep\n");
1da177e4
LT		 907 uspi->s_fsize = block_size = 1024;
908 uspi->s_fmask = ~(1024 - 1);
909 uspi->s_fshift = 10;
910 uspi->s_sbsize = super_block_size = 2048;
911 uspi->s_sbbase = 0;
0c664f97 912 uspi->s_dirblksize = 1024;
1da177e4
LT		 913 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
914 if (!(sb->s_flags & MS_RDONLY)) {
915 if (!silent)
a9814c5d 916 pr_info("ufstype=nextstep is supported read-only\n");
1da177e4
LT		 917 sb->s_flags |= MS_RDONLY;
918 }
919 break;
920
921 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
abf5d15f 922 UFSD("ufstype=nextstep-cd\n");
1da177e4
LT		 923 uspi->s_fsize = block_size = 2048;
924 uspi->s_fmask = ~(2048 - 1);
925 uspi->s_fshift = 11;
926 uspi->s_sbsize = super_block_size = 2048;
927 uspi->s_sbbase = 0;
0c664f97 928 uspi->s_dirblksize = 1024;
1da177e4
LT		 929 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
930 if (!(sb->s_flags & MS_RDONLY)) {
931 if (!silent)
a9814c5d 932 pr_info("ufstype=nextstep-cd is supported read-only\n");
1da177e4
LT		 933 sb->s_flags |= MS_RDONLY;
934 }
935 break;
936
937 case UFS_MOUNT_UFSTYPE_OPENSTEP:
abf5d15f 938 UFSD("ufstype=openstep\n");
1da177e4
LT		 939 uspi->s_fsize = block_size = 1024;
940 uspi->s_fmask = ~(1024 - 1);
941 uspi->s_fshift = 10;
942 uspi->s_sbsize = super_block_size = 2048;
943 uspi->s_sbbase = 0;
f336953b 944 uspi->s_dirblksize = 1024;
1da177e4
LT		 945 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
946 if (!(sb->s_flags & MS_RDONLY)) {
947 if (!silent)
a9814c5d 948 pr_info("ufstype=openstep is supported read-only\n");
1da177e4
LT		 949 sb->s_flags |= MS_RDONLY;
950 }
951 break;
952
953 case UFS_MOUNT_UFSTYPE_HP:
abf5d15f 954 UFSD("ufstype=hp\n");
1da177e4
LT		 955 uspi->s_fsize = block_size = 1024;
956 uspi->s_fmask = ~(1024 - 1);
957 uspi->s_fshift = 10;
958 uspi->s_sbsize = super_block_size = 2048;
959 uspi->s_sbbase = 0;
960 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
961 if (!(sb->s_flags & MS_RDONLY)) {
962 if (!silent)
a9814c5d 963 pr_info("ufstype=hp is supported read-only\n");
1da177e4
LT		 964 sb->s_flags |= MS_RDONLY;
965 }
966 break;
967 default:
968 if (!silent)
a9814c5d 969 pr_err("unknown ufstype\n");
1da177e4
LT		 970 goto failed;
971 }
972
973again:
974 if (!sb_set_blocksize(sb, block_size)) {
de771bda 975 pr_err("failed to set blocksize\n");
1da177e4
LT		 976 goto failed;
977 }
978
979 /*
980 * read ufs super block from device
981 */
7b4ee73e
E		 982
983 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
984
1da177e4
LT		 985 if (!ubh)
986 goto failed;
987
7b4ee73e
E		 988 usb1 = ubh_get_usb_first(uspi);
989 usb2 = ubh_get_usb_second(uspi);
990 usb3 = ubh_get_usb_third(uspi);
1da177e4 991
252e211e
MF		 992 /* Sort out mod used on SunOS 4.1.3 for fs_state */
993 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
994 if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
995 (uspi->s_postblformat != UFS_42POSTBLFMT)) {
996 flags &= ~UFS_ST_MASK;
997 flags |= UFS_ST_SUN;
998 }
999
1da177e4
LT		 1000 /*
1001 * Check ufs magic number
1002 */
1003 sbi->s_bytesex = BYTESEX_LE;
1004 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1005 case UFS_MAGIC:
d27d7a9a 1006 case UFS_MAGIC_BW:
1da177e4
LT		 1007 case UFS2_MAGIC:
1008 case UFS_MAGIC_LFN:
1009 case UFS_MAGIC_FEA:
1010 case UFS_MAGIC_4GB:
1011 goto magic_found;
1012 }
1013 sbi->s_bytesex = BYTESEX_BE;
1014 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1015 case UFS_MAGIC:
d27d7a9a 1016 case UFS_MAGIC_BW:
1da177e4
LT		 1017 case UFS2_MAGIC:
1018 case UFS_MAGIC_LFN:
1019 case UFS_MAGIC_FEA:
1020 case UFS_MAGIC_4GB:
1021 goto magic_found;
1022 }
1023
1024 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
1025 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
1026 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
1027 && uspi->s_sbbase < 256) {
1028 ubh_brelse_uspi(uspi);
1029 ubh = NULL;
1030 uspi->s_sbbase += 8;
1031 goto again;
1032 }
1033 if (!silent)
07bc94fd 1034 pr_err("%s(): bad magic number\n", __func__);
1da177e4
LT		 1035 goto failed;
1036
1037magic_found:
1038 /*
1039 * Check block and fragment sizes
1040 */
1041 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1042 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1043 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1044 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1045 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1046
9e8c4273 1047 if (!is_power_of_2(uspi->s_fsize)) {
07bc94fd
FF		 1048 pr_err("%s(): fragment size %u is not a power of 2\n",
1049 __func__, uspi->s_fsize);
a9814c5d 1050 goto failed;
1da177e4
LT		 1051 }
1052 if (uspi->s_fsize < 512) {
07bc94fd
FF		 1053 pr_err("%s(): fragment size %u is too small\n",
1054 __func__, uspi->s_fsize);
1da177e4
LT		 1055 goto failed;
1056 }
1057 if (uspi->s_fsize > 4096) {
07bc94fd
FF		 1058 pr_err("%s(): fragment size %u is too large\n",
1059 __func__, uspi->s_fsize);
1da177e4
LT		 1060 goto failed;
1061 }
9e8c4273 1062 if (!is_power_of_2(uspi->s_bsize)) {
07bc94fd
FF		 1063 pr_err("%s(): block size %u is not a power of 2\n",
1064 __func__, uspi->s_bsize);
1da177e4
LT		 1065 goto failed;
1066 }
1067 if (uspi->s_bsize < 4096) {
07bc94fd
FF		 1068 pr_err("%s(): block size %u is too small\n",
1069 __func__, uspi->s_bsize);
1da177e4
LT		 1070 goto failed;
1071 }
1072 if (uspi->s_bsize / uspi->s_fsize > 8) {
07bc94fd
FF		 1073 pr_err("%s(): too many fragments per block (%u)\n",
1074 __func__, uspi->s_bsize / uspi->s_fsize);
1da177e4
LT		 1075 goto failed;
1076 }
1077 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1078 ubh_brelse_uspi(uspi);
1079 ubh = NULL;
1080 block_size = uspi->s_fsize;
1081 super_block_size = uspi->s_sbsize;
abf5d15f 1082 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1da177e4
LT		 1083 goto again;
1084 }
1085
f664f1f9 1086 sbi->s_flags = flags;/*after that line some functions use s_flags*/
3313e292 1087 ufs_print_super_stuff(sb, usb1, usb2, usb3);
1da177e4
LT		 1088
1089 /*
1090 * Check, if file system was correctly unmounted.
1091 * If not, make it read only.
1092 */
f664f1f9
AM		 1093 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1094 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1095 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1096 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1097 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1098 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1da177e4
LT		 1099 switch(usb1->fs_clean) {
1100 case UFS_FSCLEAN:
abf5d15f 1101 UFSD("fs is clean\n");
1da177e4
LT		 1102 break;
1103 case UFS_FSSTABLE:
abf5d15f 1104 UFSD("fs is stable\n");
b3a0fd4d
AV		 1105 break;
1106 case UFS_FSLOG:
1107 UFSD("fs is logging fs\n");
1da177e4
LT		 1108 break;
1109 case UFS_FSOSF1:
abf5d15f 1110 UFSD("fs is DEC OSF/1\n");
1da177e4
LT		 1111 break;
1112 case UFS_FSACTIVE:
07bc94fd 1113 pr_err("%s(): fs is active\n", __func__);
1da177e4
LT		 1114 sb->s_flags |= MS_RDONLY;
1115 break;
1116 case UFS_FSBAD:
07bc94fd 1117 pr_err("%s(): fs is bad\n", __func__);
1da177e4
LT		 1118 sb->s_flags |= MS_RDONLY;
1119 break;
1120 default:
07bc94fd
FF		 1121 pr_err("%s(): can't grok fs_clean 0x%x\n",
1122 __func__, usb1->fs_clean);
1da177e4
LT		 1123 sb->s_flags |= MS_RDONLY;
1124 break;
1125 }
ee3ffd6c 1126 } else {
07bc94fd 1127 pr_err("%s(): fs needs fsck\n", __func__);
1da177e4
LT		 1128 sb->s_flags |= MS_RDONLY;
1129 }
1130
1131 /*
1132 * Read ufs_super_block into internal data structures
1133 */
1134 sb->s_op = &ufs_super_ops;
f3e2a520 1135 sb->s_export_op = &ufs_export_ops;
123e9caf 1136
1da177e4
LT		 1137 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1138
1139 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1140 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1141 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1142 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1143 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1144 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1145
1146 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
647b7e87
ED		 1147 uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1148 uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1149 } else {
1da177e4
LT		 1150 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1151 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1152 }
1153
1154 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1155 /* s_bsize already set */
1156 /* s_fsize already set */
1157 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1158 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1159 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1160 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1161 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1162 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
abf5d15f
ED		 1163 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1164 uspi->s_fshift);
1da177e4
LT		 1165 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1166 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1167 /* s_sbsize already set */
1168 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1169 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1170 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1171 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1172 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1173 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1174 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1175 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
3313e292
ED		 1176
1177 if (uspi->fs_magic == UFS2_MAGIC)
1178 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1179 else
1180 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1181
1da177e4
LT		 1182 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1183 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1184 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1185 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1186 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1187 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1188 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
647b7e87
ED		 1189 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1190 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1da177e4
LT		 1191 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1192 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1da177e4
LT		 1193 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1194 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1195 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1196
1197 /*
1198 * Compute another frequently used values
1199 */
1200 uspi->s_fpbmask = uspi->s_fpb - 1;
abf5d15f 1201 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1da177e4 1202 uspi->s_apbshift = uspi->s_bshift - 3;
abf5d15f 1203 else
1da177e4 1204 uspi->s_apbshift = uspi->s_bshift - 2;
abf5d15f 1205
1da177e4
LT		 1206 uspi->s_2apbshift = uspi->s_apbshift * 2;
1207 uspi->s_3apbshift = uspi->s_apbshift * 3;
1208 uspi->s_apb = 1 << uspi->s_apbshift;
1209 uspi->s_2apb = 1 << uspi->s_2apbshift;
1210 uspi->s_3apb = 1 << uspi->s_3apbshift;
1211 uspi->s_apbmask = uspi->s_apb - 1;
1212 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1213 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1214 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1215 uspi->s_bpf = uspi->s_fsize << 3;
1216 uspi->s_bpfshift = uspi->s_fshift + 3;
1217 uspi->s_bpfmask = uspi->s_bpf - 1;
90b315af
ED		 1218 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1219 (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1da177e4 1220 uspi->s_maxsymlinklen =
647b7e87 1221 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1da177e4 1222
9e6766cc
DG		 1223 if (uspi->fs_magic == UFS2_MAGIC)
1224 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1225 else
1226 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1227 if (uspi->s_maxsymlinklen > maxsymlen) {
1228 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1229 "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1230 uspi->s_maxsymlinklen = maxsymlen;
1231 }
8de52778 1232 sb->s_max_links = UFS_LINK_MAX;
9e6766cc 1233
b55c460d
DH		 1234 inode = ufs_iget(sb, UFS_ROOTINO);
1235 if (IS_ERR(inode)) {
1236 ret = PTR_ERR(inode);
1da177e4 1237 goto failed;
b55c460d 1238 }
48fde701 1239 sb->s_root = d_make_root(inode);
b55c460d
DH		 1240 if (!sb->s_root) {
1241 ret = -ENOMEM;
48fde701 1242 goto failed;
b55c460d 1243 }
1da177e4 1244
ee3ffd6c 1245 ufs_setup_cstotal(sb);
1da177e4
LT		 1246 /*
1247 * Read cylinder group structures
1248 */
1249 if (!(sb->s_flags & MS_RDONLY))
1250 if (!ufs_read_cylinder_structures(sb))
1251 goto failed;
1252
abf5d15f 1253 UFSD("EXIT\n");
1da177e4
LT		 1254 return 0;
1255
1da177e4 1256failed:
0244756e 1257 mutex_destroy(&sbi->mutex);
f99d49ad
JJ		 1258 if (ubh)
1259 ubh_brelse_uspi (uspi);
1260 kfree (uspi);
1261 kfree(sbi);
1da177e4 1262 sb->s_fs_info = NULL;
abf5d15f 1263 UFSD("EXIT (FAILED)\n");
b55c460d 1264 return ret;
1da177e4
LT		 1265
1266failed_nomem:
abf5d15f 1267 UFSD("EXIT (NOMEM)\n");
1da177e4
LT		 1268 return -ENOMEM;
1269}
1270
1da177e4
LT		 1271static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1272{
1273 struct ufs_sb_private_info * uspi;
1274 struct ufs_super_block_first * usb1;
1275 struct ufs_super_block_third * usb3;
1276 unsigned new_mount_opt, ufstype;
1277 unsigned flags;
337eb00a 1278
02b9984d 1279 sync_filesystem(sb);
788257d6 1280 lock_ufs(sb);
1da177e4
LT		 1281 uspi = UFS_SB(sb)->s_uspi;
1282 flags = UFS_SB(sb)->s_flags;
7b4ee73e
E		 1283 usb1 = ubh_get_usb_first(uspi);
1284 usb3 = ubh_get_usb_third(uspi);
1da177e4
LT		 1285
1286 /*
1287 * Allow the "check" option to be passed as a remount option.
1288 * It is not possible to change ufstype option during remount
1289 */
1290 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1291 new_mount_opt = 0;
1292 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
bbd6851a 1293 if (!ufs_parse_options (data, &new_mount_opt)) {
788257d6 1294 unlock_ufs(sb);
1da177e4 1295 return -EINVAL;
bbd6851a 1296 }
1da177e4
LT		 1297 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1298 new_mount_opt |= ufstype;
ee3ffd6c 1299 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
a9814c5d 1300 pr_err("ufstype can't be changed during remount\n");
788257d6 1301 unlock_ufs(sb);
1da177e4
LT		 1302 return -EINVAL;
1303 }
1304
1305 if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1306 UFS_SB(sb)->s_mount_opt = new_mount_opt;
788257d6 1307 unlock_ufs(sb);
1da177e4
LT		 1308 return 0;
1309 }
1310
1311 /*
1312 * fs was mouted as rw, remounting ro
1313 */
1314 if (*mount_flags & MS_RDONLY) {
ee3ffd6c 1315 ufs_put_super_internal(sb);
1da177e4
LT		 1316 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1317 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
252e211e 1318 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1da177e4
LT		 1319 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1320 ufs_set_fs_state(sb, usb1, usb3,
1321 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
9695ef16 1322 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1da177e4 1323 sb->s_flags |= MS_RDONLY;
ee3ffd6c 1324 } else {
1da177e4
LT		 1325 /*
1326 * fs was mounted as ro, remounting rw
1327 */
1da177e4 1328#ifndef CONFIG_UFS_FS_WRITE
a9814c5d 1329 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
788257d6 1330 unlock_ufs(sb);
1da177e4
LT		 1331 return -EINVAL;
1332#else
1333 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
252e211e 1334 ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1da177e4 1335 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
cbcae39f
ED		 1336 ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1337 ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
a9814c5d 1338 pr_err("this ufstype is read-only supported\n");
788257d6 1339 unlock_ufs(sb);
1da177e4
LT		 1340 return -EINVAL;
1341 }
ee3ffd6c 1342 if (!ufs_read_cylinder_structures(sb)) {
a9814c5d 1343 pr_err("failed during remounting\n");
788257d6 1344 unlock_ufs(sb);
1da177e4
LT		 1345 return -EPERM;
1346 }
1347 sb->s_flags &= ~MS_RDONLY;
1348#endif
1349 }
1350 UFS_SB(sb)->s_mount_opt = new_mount_opt;
788257d6 1351 unlock_ufs(sb);
1da177e4
LT		 1352 return 0;
1353}
1354
34c80b1d 1355static int ufs_show_options(struct seq_file *seq, struct dentry *root)
2a9807c0 1356{
34c80b1d 1357 struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
2a9807c0 1358 unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
a447c093 1359 const struct match_token *tp = tokens;
2a9807c0
ED		 1360
1361 while (tp->token != Opt_onerror_panic && tp->token != mval)
1362 ++tp;
1363 BUG_ON(tp->token == Opt_onerror_panic);
1364 seq_printf(seq, ",%s", tp->pattern);
1365
1366 mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1367 while (tp->token != Opt_err && tp->token != mval)
1368 ++tp;
1369 BUG_ON(tp->token == Opt_err);
1370 seq_printf(seq, ",%s", tp->pattern);
1371
1372 return 0;
1373}
1374
647b7e87 1375static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1da177e4 1376{
726c3342 1377 struct super_block *sb = dentry->d_sb;
647b7e87
ED		 1378 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1379 unsigned flags = UFS_SB(sb)->s_flags;
647b7e87 1380 struct ufs_super_block_third *usb3;
41d577aa 1381 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1da177e4 1382
788257d6 1383 lock_ufs(sb);
1da177e4 1384
647b7e87 1385 usb3 = ubh_get_usb_third(uspi);
1da177e4 1386
1da177e4
LT		 1387 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1388 buf->f_type = UFS2_MAGIC;
647b7e87 1389 buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
647b7e87 1390 } else {
1da177e4
LT		 1391 buf->f_type = UFS_MAGIC;
1392 buf->f_blocks = uspi->s_dsize;
1da177e4 1393 }
ee3ffd6c
ED		 1394 buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1395 uspi->cs_total.cs_nffree;
1396 buf->f_ffree = uspi->cs_total.cs_nifree;
1da177e4
LT		 1397 buf->f_bsize = sb->s_blocksize;
1398 buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1399 ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1400 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1401 buf->f_namelen = UFS_MAXNAMLEN;
41d577aa
CL		 1402 buf->f_fsid.val[0] = (u32)id;
1403 buf->f_fsid.val[1] = (u32)(id >> 32);
1da177e4 1404
788257d6 1405 unlock_ufs(sb);
1da177e4
LT		 1406
1407 return 0;
1408}
1409
e18b890b 1410static struct kmem_cache * ufs_inode_cachep;
1da177e4
LT		 1411
1412static struct inode *ufs_alloc_inode(struct super_block *sb)
1413{
1414 struct ufs_inode_info *ei;
61da3ae2
FF		 1415
1416 ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
1da177e4
LT		 1417 if (!ei)
1418 return NULL;
61da3ae2 1419
1da177e4
LT		 1420 ei->vfs_inode.i_version = 1;
1421 return &ei->vfs_inode;
1422}
1423
fa0d7e3d 1424static void ufs_i_callback(struct rcu_head *head)
1da177e4 1425{
fa0d7e3d 1426 struct inode *inode = container_of(head, struct inode, i_rcu);
1da177e4
LT		 1427 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1428}
1429
fa0d7e3d
NP		 1430static void ufs_destroy_inode(struct inode *inode)
1431{
1432 call_rcu(&inode->i_rcu, ufs_i_callback);
1433}
1434
51cc5068 1435static void init_once(void *foo)
1da177e4
LT		 1436{
1437 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1438
a35afb83 1439 inode_init_once(&ei->vfs_inode);
1da177e4 1440}
20c2df83 1441
76ee4735 1442static int __init init_inodecache(void)
1da177e4
LT		 1443{
1444 ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1445 sizeof(struct ufs_inode_info),
fffb60f9
PJ		 1446 0, (SLAB_RECLAIM_ACCOUNT|
1447 SLAB_MEM_SPREAD),
20c2df83 1448 init_once);
1da177e4
LT		 1449 if (ufs_inode_cachep == NULL)
1450 return -ENOMEM;
1451 return 0;
1452}
1453
1454static void destroy_inodecache(void)
1455{
8c0a8537
KS		 1456 /*
1457 * Make sure all delayed rcu free inodes are flushed before we
1458 * destroy cache.
1459 */
1460 rcu_barrier();
1a1d92c1 1461 kmem_cache_destroy(ufs_inode_cachep);
1da177e4
LT		 1462}
1463
ee9b6d61 1464static const struct super_operations ufs_super_ops = {
1da177e4
LT		 1465 .alloc_inode = ufs_alloc_inode,
1466 .destroy_inode = ufs_destroy_inode,
1da177e4 1467 .write_inode = ufs_write_inode,
58e8268c 1468 .evict_inode = ufs_evict_inode,
1da177e4 1469 .put_super = ufs_put_super,
8c800656 1470 .sync_fs = ufs_sync_fs,
1da177e4
LT		 1471 .statfs = ufs_statfs,
1472 .remount_fs = ufs_remount,
2a9807c0 1473 .show_options = ufs_show_options,
1da177e4
LT		 1474};
1475
152a0836
AV		 1476static struct dentry *ufs_mount(struct file_system_type *fs_type,
1477 int flags, const char *dev_name, void *data)
1da177e4 1478{
152a0836 1479 return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1da177e4
LT		 1480}
1481
1482static struct file_system_type ufs_fs_type = {
1483 .owner = THIS_MODULE,
1484 .name = "ufs",
152a0836 1485 .mount = ufs_mount,
1da177e4
LT		 1486 .kill_sb = kill_block_super,
1487 .fs_flags = FS_REQUIRES_DEV,
1488};
7f78e035 1489MODULE_ALIAS_FS("ufs");
1da177e4
LT		 1490
1491static int __init init_ufs_fs(void)
1492{
1493 int err = init_inodecache();
1494 if (err)
1495 goto out1;
1496 err = register_filesystem(&ufs_fs_type);
1497 if (err)
1498 goto out;
1499 return 0;
1500out:
1501 destroy_inodecache();
1502out1:
1503 return err;
1504}
1505
1506static void __exit exit_ufs_fs(void)
1507{
1508 unregister_filesystem(&ufs_fs_type);
1509 destroy_inodecache();
1510}
1511
1512module_init(init_ufs_fs)
1513module_exit(exit_ufs_fs)
1514MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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