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69#include <linux/exportfs.h>
70#include <linux/module.h>
71#include <linux/bitops.h>
72
73#include <stdarg.h>
74
75#include <linux/uaccess.h>
76
77#include <linux/errno.h>
78#include <linux/fs.h>
79#include <linux/slab.h>
80#include <linux/time.h>
81#include <linux/stat.h>
82#include <linux/string.h>
83#include <linux/blkdev.h>
84#include <linux/backing-dev.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>
92#include <linux/iversion.h>
93
94#include "ufs_fs.h"
95#include "ufs.h"
96#include "swab.h"
97#include "util.h"
98
99static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
100{
101 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
102 struct inode *inode;
103
104 if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg)
105 return ERR_PTR(-ESTALE);
106
107 inode = ufs_iget(sb, ino);
108 if (IS_ERR(inode))
109 return ERR_CAST(inode);
110 if (generation && inode->i_generation != generation) {
111 iput(inode);
112 return ERR_PTR(-ESTALE);
113 }
114 return inode;
115}
116
117static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
118 int fh_len, int fh_type)
119{
120 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
121}
122
123static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
124 int fh_len, int fh_type)
125{
126 return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
127}
128
129static struct dentry *ufs_get_parent(struct dentry *child)
130{
131 struct qstr dot_dot = QSTR_INIT("..", 2);
132 ino_t ino;
133
134 ino = ufs_inode_by_name(d_inode(child), &dot_dot);
135 if (!ino)
136 return ERR_PTR(-ENOENT);
137 return d_obtain_alias(ufs_iget(child->d_sb, ino));
138}
139
140static const struct export_operations ufs_export_ops = {
141 .fh_to_dentry = ufs_fh_to_dentry,
142 .fh_to_parent = ufs_fh_to_parent,
143 .get_parent = ufs_get_parent,
144};
145
146#ifdef CONFIG_UFS_DEBUG
147
148
149
150static void ufs_print_super_stuff(struct super_block *sb,
151 struct ufs_super_block_first *usb1,
152 struct ufs_super_block_second *usb2,
153 struct ufs_super_block_third *usb3)
154{
155 u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
156
157 pr_debug("ufs_print_super_stuff\n");
158 pr_debug(" magic: 0x%x\n", magic);
159 if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
160 pr_debug(" fs_size: %llu\n", (unsigned long long)
161 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
162 pr_debug(" fs_dsize: %llu\n", (unsigned long long)
163 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
164 pr_debug(" bsize: %u\n",
165 fs32_to_cpu(sb, usb1->fs_bsize));
166 pr_debug(" fsize: %u\n",
167 fs32_to_cpu(sb, usb1->fs_fsize));
168 pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
169 pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
170 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
171 pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
172 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
173 pr_debug(" cs_nbfree(No of free blocks): %llu\n",
174 (unsigned long long)
175 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
176 pr_info(" cs_nifree(Num of free inodes): %llu\n",
177 (unsigned long long)
178 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
179 pr_info(" cs_nffree(Num of free frags): %llu\n",
180 (unsigned long long)
181 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
182 pr_info(" fs_maxsymlinklen: %u\n",
183 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
184 } else {
185 pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
186 pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
187 pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
188 pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
189 pr_debug(" cgoffset: %u\n",
190 fs32_to_cpu(sb, usb1->fs_cgoffset));
191 pr_debug(" ~cgmask: 0x%x\n",
192 ~fs32_to_cpu(sb, usb1->fs_cgmask));
193 pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
194 pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
195 pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
196 pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
197 pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
198 pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
199 pr_debug(" fragshift: %u\n",
200 fs32_to_cpu(sb, usb1->fs_fragshift));
201 pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
202 pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
203 pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
204 pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
205 pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
206 pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
207 pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
208 pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
209 pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
210 pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
211 pr_debug(" fstodb: %u\n",
212 fs32_to_cpu(sb, usb1->fs_fsbtodb));
213 pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
214 pr_debug(" ndir %u\n",
215 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
216 pr_debug(" nifree %u\n",
217 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
218 pr_debug(" nbfree %u\n",
219 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
220 pr_debug(" nffree %u\n",
221 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
222 }
223 pr_debug("\n");
224}
225
226
227
228
229static void ufs_print_cylinder_stuff(struct super_block *sb,
230 struct ufs_cylinder_group *cg)
231{
232 pr_debug("\nufs_print_cylinder_stuff\n");
233 pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
234 pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
235 pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
236 pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
237 pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
238 pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
239 pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
240 pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
241 pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
242 pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
243 pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
244 pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
245 pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
246 pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
247 pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
248 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
249 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
250 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
251 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
252 pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
253 pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
254 pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
255 pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
256 pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
257 pr_debug(" clustersumoff %u\n",
258 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
259 pr_debug(" clusteroff %u\n",
260 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
261 pr_debug(" nclusterblks %u\n",
262 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
263 pr_debug("\n");
264}
265#else
266# define ufs_print_super_stuff(sb, usb1, usb2, usb3)
267# define ufs_print_cylinder_stuff(sb, cg)
268#endif
269
270static const struct super_operations ufs_super_ops;
271
272void ufs_error (struct super_block * sb, const char * function,
273 const char * fmt, ...)
274{
275 struct ufs_sb_private_info * uspi;
276 struct ufs_super_block_first * usb1;
277 struct va_format vaf;
278 va_list args;
279
280 uspi = UFS_SB(sb)->s_uspi;
281 usb1 = ubh_get_usb_first(uspi);
282
283 if (!sb_rdonly(sb)) {
284 usb1->fs_clean = UFS_FSBAD;
285 ubh_mark_buffer_dirty(USPI_UBH(uspi));
286 ufs_mark_sb_dirty(sb);
287 sb->s_flags |= SB_RDONLY;
288 }
289 va_start(args, fmt);
290 vaf.fmt = fmt;
291 vaf.va = &args;
292 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
293 case UFS_MOUNT_ONERROR_PANIC:
294 panic("panic (device %s): %s: %pV\n",
295 sb->s_id, function, &vaf);
296
297 case UFS_MOUNT_ONERROR_LOCK:
298 case UFS_MOUNT_ONERROR_UMOUNT:
299 case UFS_MOUNT_ONERROR_REPAIR:
300 pr_crit("error (device %s): %s: %pV\n",
301 sb->s_id, function, &vaf);
302 }
303 va_end(args);
304}
305
306void ufs_panic (struct super_block * sb, const char * function,
307 const char * fmt, ...)
308{
309 struct ufs_sb_private_info * uspi;
310 struct ufs_super_block_first * usb1;
311 struct va_format vaf;
312 va_list args;
313
314 uspi = UFS_SB(sb)->s_uspi;
315 usb1 = ubh_get_usb_first(uspi);
316
317 if (!sb_rdonly(sb)) {
318 usb1->fs_clean = UFS_FSBAD;
319 ubh_mark_buffer_dirty(USPI_UBH(uspi));
320 ufs_mark_sb_dirty(sb);
321 }
322 va_start(args, fmt);
323 vaf.fmt = fmt;
324 vaf.va = &args;
325 sb->s_flags |= SB_RDONLY;
326 pr_crit("panic (device %s): %s: %pV\n",
327 sb->s_id, function, &vaf);
328 va_end(args);
329}
330
331void ufs_warning (struct super_block * sb, const char * function,
332 const char * fmt, ...)
333{
334 struct va_format vaf;
335 va_list args;
336
337 va_start(args, fmt);
338 vaf.fmt = fmt;
339 vaf.va = &args;
340 pr_warn("(device %s): %s: %pV\n",
341 sb->s_id, function, &vaf);
342 va_end(args);
343}
344
345enum {
346 Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
347 Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
348 Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
349 Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
350 Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
351 Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
352 Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
353 Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
354 Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
355 Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
356 Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
357 Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
358 Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
359 Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
360 Opt_err
361};
362
363static const match_table_t tokens = {
364 {Opt_type_old, "ufstype=old"},
365 {Opt_type_sunx86, "ufstype=sunx86"},
366 {Opt_type_sun, "ufstype=sun"},
367 {Opt_type_sunos, "ufstype=sunos"},
368 {Opt_type_44bsd, "ufstype=44bsd"},
369 {Opt_type_ufs2, "ufstype=ufs2"},
370 {Opt_type_ufs2, "ufstype=5xbsd"},
371 {Opt_type_hp, "ufstype=hp"},
372 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
373 {Opt_type_nextstep, "ufstype=nextstep"},
374 {Opt_type_openstep, "ufstype=openstep"},
375
376 {Opt_onerror_panic, "onerror=panic"},
377 {Opt_onerror_lock, "onerror=lock"},
378 {Opt_onerror_umount, "onerror=umount"},
379 {Opt_onerror_repair, "onerror=repair"},
380 {Opt_err, NULL}
381};
382
383static int ufs_parse_options (char * options, unsigned * mount_options)
384{
385 char * p;
386
387 UFSD("ENTER\n");
388
389 if (!options)
390 return 1;
391
392 while ((p = strsep(&options, ",")) != NULL) {
393 substring_t args[MAX_OPT_ARGS];
394 int token;
395 if (!*p)
396 continue;
397
398 token = match_token(p, tokens, args);
399 switch (token) {
400 case Opt_type_old:
401 ufs_clear_opt (*mount_options, UFSTYPE);
402 ufs_set_opt (*mount_options, UFSTYPE_OLD);
403 break;
404 case Opt_type_sunx86:
405 ufs_clear_opt (*mount_options, UFSTYPE);
406 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
407 break;
408 case Opt_type_sun:
409 ufs_clear_opt (*mount_options, UFSTYPE);
410 ufs_set_opt (*mount_options, UFSTYPE_SUN);
411 break;
412 case Opt_type_sunos:
413 ufs_clear_opt(*mount_options, UFSTYPE);
414 ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
415 break;
416 case Opt_type_44bsd:
417 ufs_clear_opt (*mount_options, UFSTYPE);
418 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
419 break;
420 case Opt_type_ufs2:
421 ufs_clear_opt(*mount_options, UFSTYPE);
422 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
423 break;
424 case Opt_type_hp:
425 ufs_clear_opt (*mount_options, UFSTYPE);
426 ufs_set_opt (*mount_options, UFSTYPE_HP);
427 break;
428 case Opt_type_nextstepcd:
429 ufs_clear_opt (*mount_options, UFSTYPE);
430 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
431 break;
432 case Opt_type_nextstep:
433 ufs_clear_opt (*mount_options, UFSTYPE);
434 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
435 break;
436 case Opt_type_openstep:
437 ufs_clear_opt (*mount_options, UFSTYPE);
438 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
439 break;
440 case Opt_onerror_panic:
441 ufs_clear_opt (*mount_options, ONERROR);
442 ufs_set_opt (*mount_options, ONERROR_PANIC);
443 break;
444 case Opt_onerror_lock:
445 ufs_clear_opt (*mount_options, ONERROR);
446 ufs_set_opt (*mount_options, ONERROR_LOCK);
447 break;
448 case Opt_onerror_umount:
449 ufs_clear_opt (*mount_options, ONERROR);
450 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
451 break;
452 case Opt_onerror_repair:
453 pr_err("Unable to do repair on error, will lock lock instead\n");
454 ufs_clear_opt (*mount_options, ONERROR);
455 ufs_set_opt (*mount_options, ONERROR_REPAIR);
456 break;
457 default:
458 pr_err("Invalid option: \"%s\" or missing value\n", p);
459 return 0;
460 }
461 }
462 return 1;
463}
464
465
466
467
468
469
470static void ufs_setup_cstotal(struct super_block *sb)
471{
472 struct ufs_sb_info *sbi = UFS_SB(sb);
473 struct ufs_sb_private_info *uspi = sbi->s_uspi;
474 struct ufs_super_block_first *usb1;
475 struct ufs_super_block_second *usb2;
476 struct ufs_super_block_third *usb3;
477 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
478
479 UFSD("ENTER, mtype=%u\n", mtype);
480 usb1 = ubh_get_usb_first(uspi);
481 usb2 = ubh_get_usb_second(uspi);
482 usb3 = ubh_get_usb_third(uspi);
483
484 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
485 (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) ||
486 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
487
488 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
489 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
490 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
491 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
492 } else {
493 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
494 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
495 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
496 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
497 }
498 UFSD("EXIT\n");
499}
500
501
502
503
504static int ufs_read_cylinder_structures(struct super_block *sb)
505{
506 struct ufs_sb_info *sbi = UFS_SB(sb);
507 struct ufs_sb_private_info *uspi = sbi->s_uspi;
508 struct ufs_buffer_head * ubh;
509 unsigned char * base, * space;
510 unsigned size, blks, i;
511
512 UFSD("ENTER\n");
513
514
515
516
517
518 size = uspi->s_cssize;
519 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
520 base = space = kmalloc(size, GFP_NOFS);
521 if (!base)
522 goto failed;
523 sbi->s_csp = (struct ufs_csum *)space;
524 for (i = 0; i < blks; i += uspi->s_fpb) {
525 size = uspi->s_bsize;
526 if (i + uspi->s_fpb > blks)
527 size = (blks - i) * uspi->s_fsize;
528
529 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
530
531 if (!ubh)
532 goto failed;
533
534 ubh_ubhcpymem (space, ubh, size);
535
536 space += size;
537 ubh_brelse (ubh);
538 ubh = NULL;
539 }
540
541
542
543
544
545 sbi->s_ucg = kmalloc_array(uspi->s_ncg, sizeof(struct buffer_head *),
546 GFP_NOFS);
547 if (!sbi->s_ucg)
548 goto failed;
549 for (i = 0; i < uspi->s_ncg; i++)
550 sbi->s_ucg[i] = NULL;
551 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
552 sbi->s_ucpi[i] = NULL;
553 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
554 }
555 for (i = 0; i < uspi->s_ncg; i++) {
556 UFSD("read cg %u\n", i);
557 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
558 goto failed;
559 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
560 goto failed;
561
562 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
563 }
564 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
565 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
566 goto failed;
567 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
568 }
569 sbi->s_cg_loaded = 0;
570 UFSD("EXIT\n");
571 return 1;
572
573failed:
574 kfree (base);
575 if (sbi->s_ucg) {
576 for (i = 0; i < uspi->s_ncg; i++)
577 if (sbi->s_ucg[i])
578 brelse (sbi->s_ucg[i]);
579 kfree (sbi->s_ucg);
580 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
581 kfree (sbi->s_ucpi[i]);
582 }
583 UFSD("EXIT (FAILED)\n");
584 return 0;
585}
586
587
588
589
590static void ufs_put_cstotal(struct super_block *sb)
591{
592 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
593 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
594 struct ufs_super_block_first *usb1;
595 struct ufs_super_block_second *usb2;
596 struct ufs_super_block_third *usb3;
597
598 UFSD("ENTER\n");
599 usb1 = ubh_get_usb_first(uspi);
600 usb2 = ubh_get_usb_second(uspi);
601 usb3 = ubh_get_usb_third(uspi);
602
603 if (mtype == UFS_MOUNT_UFSTYPE_UFS2) {
604
605 usb2->fs_un.fs_u2.cs_ndir =
606 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
607 usb2->fs_un.fs_u2.cs_nbfree =
608 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
609 usb3->fs_un1.fs_u2.cs_nifree =
610 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
611 usb3->fs_un1.fs_u2.cs_nffree =
612 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
613 goto out;
614 }
615
616 if (mtype == UFS_MOUNT_UFSTYPE_44BSD &&
617 (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) {
618
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 }
628 usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
629 usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
630 usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
631 usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
632out:
633 ubh_mark_buffer_dirty(USPI_UBH(uspi));
634 ufs_print_super_stuff(sb, usb1, usb2, usb3);
635 UFSD("EXIT\n");
636}
637
638
639
640
641
642
643
644static void ufs_put_super_internal(struct super_block *sb)
645{
646 struct ufs_sb_info *sbi = UFS_SB(sb);
647 struct ufs_sb_private_info *uspi = sbi->s_uspi;
648 struct ufs_buffer_head * ubh;
649 unsigned char * base, * space;
650 unsigned blks, size, i;
651
652
653 UFSD("ENTER\n");
654
655 ufs_put_cstotal(sb);
656 size = uspi->s_cssize;
657 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
658 base = space = (char*) sbi->s_csp;
659 for (i = 0; i < blks; i += uspi->s_fpb) {
660 size = uspi->s_bsize;
661 if (i + uspi->s_fpb > blks)
662 size = (blks - i) * uspi->s_fsize;
663
664 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
665
666 ubh_memcpyubh (ubh, space, size);
667 space += size;
668 ubh_mark_buffer_uptodate (ubh, 1);
669 ubh_mark_buffer_dirty (ubh);
670 ubh_brelse (ubh);
671 }
672 for (i = 0; i < sbi->s_cg_loaded; i++) {
673 ufs_put_cylinder (sb, i);
674 kfree (sbi->s_ucpi[i]);
675 }
676 for (; i < UFS_MAX_GROUP_LOADED; i++)
677 kfree (sbi->s_ucpi[i]);
678 for (i = 0; i < uspi->s_ncg; i++)
679 brelse (sbi->s_ucg[i]);
680 kfree (sbi->s_ucg);
681 kfree (base);
682
683 UFSD("EXIT\n");
684}
685
686static int ufs_sync_fs(struct super_block *sb, int wait)
687{
688 struct ufs_sb_private_info * uspi;
689 struct ufs_super_block_first * usb1;
690 struct ufs_super_block_third * usb3;
691 unsigned flags;
692
693 mutex_lock(&UFS_SB(sb)->s_lock);
694
695 UFSD("ENTER\n");
696
697 flags = UFS_SB(sb)->s_flags;
698 uspi = UFS_SB(sb)->s_uspi;
699 usb1 = ubh_get_usb_first(uspi);
700 usb3 = ubh_get_usb_third(uspi);
701
702 usb1->fs_time = ufs_get_seconds(sb);
703 if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
704 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
705 (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
706 ufs_set_fs_state(sb, usb1, usb3,
707 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
708 ufs_put_cstotal(sb);
709
710 UFSD("EXIT\n");
711 mutex_unlock(&UFS_SB(sb)->s_lock);
712
713 return 0;
714}
715
716static void delayed_sync_fs(struct work_struct *work)
717{
718 struct ufs_sb_info *sbi;
719
720 sbi = container_of(work, struct ufs_sb_info, sync_work.work);
721
722 spin_lock(&sbi->work_lock);
723 sbi->work_queued = 0;
724 spin_unlock(&sbi->work_lock);
725
726 ufs_sync_fs(sbi->sb, 1);
727}
728
729void ufs_mark_sb_dirty(struct super_block *sb)
730{
731 struct ufs_sb_info *sbi = UFS_SB(sb);
732 unsigned long delay;
733
734 spin_lock(&sbi->work_lock);
735 if (!sbi->work_queued) {
736 delay = msecs_to_jiffies(dirty_writeback_interval * 10);
737 queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
738 sbi->work_queued = 1;
739 }
740 spin_unlock(&sbi->work_lock);
741}
742
743static void ufs_put_super(struct super_block *sb)
744{
745 struct ufs_sb_info * sbi = UFS_SB(sb);
746
747 UFSD("ENTER\n");
748
749 if (!sb_rdonly(sb))
750 ufs_put_super_internal(sb);
751 cancel_delayed_work_sync(&sbi->sync_work);
752
753 ubh_brelse_uspi (sbi->s_uspi);
754 kfree (sbi->s_uspi);
755 kfree (sbi);
756 sb->s_fs_info = NULL;
757 UFSD("EXIT\n");
758 return;
759}
760
761static u64 ufs_max_bytes(struct super_block *sb)
762{
763 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
764 int bits = uspi->s_apbshift;
765 u64 res;
766
767 if (bits > 21)
768 res = ~0ULL;
769 else
770 res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) +
771 (1LL << (3*bits));
772
773 if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift))
774 return MAX_LFS_FILESIZE;
775 return res << uspi->s_bshift;
776}
777
778static int ufs_fill_super(struct super_block *sb, void *data, int silent)
779{
780 struct ufs_sb_info * sbi;
781 struct ufs_sb_private_info * uspi;
782 struct ufs_super_block_first * usb1;
783 struct ufs_super_block_second * usb2;
784 struct ufs_super_block_third * usb3;
785 struct ufs_buffer_head * ubh;
786 struct inode *inode;
787 unsigned block_size, super_block_size;
788 unsigned flags;
789 unsigned super_block_offset;
790 unsigned maxsymlen;
791 int ret = -EINVAL;
792
793 uspi = NULL;
794 ubh = NULL;
795 flags = 0;
796
797 UFSD("ENTER\n");
798
799#ifndef CONFIG_UFS_FS_WRITE
800 if (!sb_rdonly(sb)) {
801 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
802 return -EROFS;
803 }
804#endif
805
806 sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
807 if (!sbi)
808 goto failed_nomem;
809 sb->s_fs_info = sbi;
810 sbi->sb = sb;
811
812 UFSD("flag %u\n", (int)(sb_rdonly(sb)));
813
814 mutex_init(&sbi->s_lock);
815 spin_lock_init(&sbi->work_lock);
816 INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
817
818
819
820
821 sbi->s_mount_opt = 0;
822 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
823 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
824 pr_err("wrong mount options\n");
825 goto failed;
826 }
827 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
828 if (!silent)
829 pr_err("You didn't specify the type of your ufs filesystem\n\n"
830 "mount -t ufs -o ufstype="
831 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
832 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
833 "default is ufstype=old\n");
834 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
835 }
836
837 uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
838 sbi->s_uspi = uspi;
839 if (!uspi)
840 goto failed;
841 uspi->s_dirblksize = UFS_SECTOR_SIZE;
842 super_block_offset=UFS_SBLOCK;
843
844 sb->s_maxbytes = MAX_LFS_FILESIZE;
845
846 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
847 case UFS_MOUNT_UFSTYPE_44BSD:
848 UFSD("ufstype=44bsd\n");
849 uspi->s_fsize = block_size = 512;
850 uspi->s_fmask = ~(512 - 1);
851 uspi->s_fshift = 9;
852 uspi->s_sbsize = super_block_size = 1536;
853 uspi->s_sbbase = 0;
854 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
855 break;
856 case UFS_MOUNT_UFSTYPE_UFS2:
857 UFSD("ufstype=ufs2\n");
858 super_block_offset=SBLOCK_UFS2;
859 uspi->s_fsize = block_size = 512;
860 uspi->s_fmask = ~(512 - 1);
861 uspi->s_fshift = 9;
862 uspi->s_sbsize = super_block_size = 1536;
863 uspi->s_sbbase = 0;
864 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
865 break;
866
867 case UFS_MOUNT_UFSTYPE_SUN:
868 UFSD("ufstype=sun\n");
869 uspi->s_fsize = block_size = 1024;
870 uspi->s_fmask = ~(1024 - 1);
871 uspi->s_fshift = 10;
872 uspi->s_sbsize = super_block_size = 2048;
873 uspi->s_sbbase = 0;
874 uspi->s_maxsymlinklen = 0;
875 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
876 break;
877
878 case UFS_MOUNT_UFSTYPE_SUNOS:
879 UFSD("ufstype=sunos\n");
880 uspi->s_fsize = block_size = 1024;
881 uspi->s_fmask = ~(1024 - 1);
882 uspi->s_fshift = 10;
883 uspi->s_sbsize = 2048;
884 super_block_size = 2048;
885 uspi->s_sbbase = 0;
886 uspi->s_maxsymlinklen = 0;
887 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
888 break;
889
890 case UFS_MOUNT_UFSTYPE_SUNx86:
891 UFSD("ufstype=sunx86\n");
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 uspi->s_maxsymlinklen = 0;
898 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
899 break;
900
901 case UFS_MOUNT_UFSTYPE_OLD:
902 UFSD("ufstype=old\n");
903 uspi->s_fsize = block_size = 1024;
904 uspi->s_fmask = ~(1024 - 1);
905 uspi->s_fshift = 10;
906 uspi->s_sbsize = super_block_size = 2048;
907 uspi->s_sbbase = 0;
908 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
909 if (!sb_rdonly(sb)) {
910 if (!silent)
911 pr_info("ufstype=old is supported read-only\n");
912 sb->s_flags |= SB_RDONLY;
913 }
914 break;
915
916 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
917 UFSD("ufstype=nextstep\n");
918 uspi->s_fsize = block_size = 1024;
919 uspi->s_fmask = ~(1024 - 1);
920 uspi->s_fshift = 10;
921 uspi->s_sbsize = super_block_size = 2048;
922 uspi->s_sbbase = 0;
923 uspi->s_dirblksize = 1024;
924 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
925 if (!sb_rdonly(sb)) {
926 if (!silent)
927 pr_info("ufstype=nextstep is supported read-only\n");
928 sb->s_flags |= SB_RDONLY;
929 }
930 break;
931
932 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
933 UFSD("ufstype=nextstep-cd\n");
934 uspi->s_fsize = block_size = 2048;
935 uspi->s_fmask = ~(2048 - 1);
936 uspi->s_fshift = 11;
937 uspi->s_sbsize = super_block_size = 2048;
938 uspi->s_sbbase = 0;
939 uspi->s_dirblksize = 1024;
940 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
941 if (!sb_rdonly(sb)) {
942 if (!silent)
943 pr_info("ufstype=nextstep-cd is supported read-only\n");
944 sb->s_flags |= SB_RDONLY;
945 }
946 break;
947
948 case UFS_MOUNT_UFSTYPE_OPENSTEP:
949 UFSD("ufstype=openstep\n");
950 uspi->s_fsize = block_size = 1024;
951 uspi->s_fmask = ~(1024 - 1);
952 uspi->s_fshift = 10;
953 uspi->s_sbsize = super_block_size = 2048;
954 uspi->s_sbbase = 0;
955 uspi->s_dirblksize = 1024;
956 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
957 if (!sb_rdonly(sb)) {
958 if (!silent)
959 pr_info("ufstype=openstep is supported read-only\n");
960 sb->s_flags |= SB_RDONLY;
961 }
962 break;
963
964 case UFS_MOUNT_UFSTYPE_HP:
965 UFSD("ufstype=hp\n");
966 uspi->s_fsize = block_size = 1024;
967 uspi->s_fmask = ~(1024 - 1);
968 uspi->s_fshift = 10;
969 uspi->s_sbsize = super_block_size = 2048;
970 uspi->s_sbbase = 0;
971 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
972 if (!sb_rdonly(sb)) {
973 if (!silent)
974 pr_info("ufstype=hp is supported read-only\n");
975 sb->s_flags |= SB_RDONLY;
976 }
977 break;
978 default:
979 if (!silent)
980 pr_err("unknown ufstype\n");
981 goto failed;
982 }
983
984again:
985 if (!sb_set_blocksize(sb, block_size)) {
986 pr_err("failed to set blocksize\n");
987 goto failed;
988 }
989
990
991
992
993
994 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
995
996 if (!ubh)
997 goto failed;
998
999 usb1 = ubh_get_usb_first(uspi);
1000 usb2 = ubh_get_usb_second(uspi);
1001 usb3 = ubh_get_usb_third(uspi);
1002
1003
1004 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
1005 if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
1006 (uspi->s_postblformat != UFS_42POSTBLFMT)) {
1007 flags &= ~UFS_ST_MASK;
1008 flags |= UFS_ST_SUN;
1009 }
1010
1011 if ((flags & UFS_ST_MASK) == UFS_ST_44BSD &&
1012 uspi->s_postblformat == UFS_42POSTBLFMT) {
1013 if (!silent)
1014 pr_err("this is not a 44bsd filesystem");
1015 goto failed;
1016 }
1017
1018
1019
1020
1021 sbi->s_bytesex = BYTESEX_LE;
1022 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1023 case UFS_MAGIC:
1024 case UFS_MAGIC_BW:
1025 case UFS2_MAGIC:
1026 case UFS_MAGIC_LFN:
1027 case UFS_MAGIC_FEA:
1028 case UFS_MAGIC_4GB:
1029 goto magic_found;
1030 }
1031 sbi->s_bytesex = BYTESEX_BE;
1032 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1033 case UFS_MAGIC:
1034 case UFS_MAGIC_BW:
1035 case UFS2_MAGIC:
1036 case UFS_MAGIC_LFN:
1037 case UFS_MAGIC_FEA:
1038 case UFS_MAGIC_4GB:
1039 goto magic_found;
1040 }
1041
1042 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
1043 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
1044 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
1045 && uspi->s_sbbase < 256) {
1046 ubh_brelse_uspi(uspi);
1047 ubh = NULL;
1048 uspi->s_sbbase += 8;
1049 goto again;
1050 }
1051 if (!silent)
1052 pr_err("%s(): bad magic number\n", __func__);
1053 goto failed;
1054
1055magic_found:
1056
1057
1058
1059 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1060 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1061 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1062 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1063 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1064
1065 if (!is_power_of_2(uspi->s_fsize)) {
1066 pr_err("%s(): fragment size %u is not a power of 2\n",
1067 __func__, uspi->s_fsize);
1068 goto failed;
1069 }
1070 if (uspi->s_fsize < 512) {
1071 pr_err("%s(): fragment size %u is too small\n",
1072 __func__, uspi->s_fsize);
1073 goto failed;
1074 }
1075 if (uspi->s_fsize > 4096) {
1076 pr_err("%s(): fragment size %u is too large\n",
1077 __func__, uspi->s_fsize);
1078 goto failed;
1079 }
1080 if (!is_power_of_2(uspi->s_bsize)) {
1081 pr_err("%s(): block size %u is not a power of 2\n",
1082 __func__, uspi->s_bsize);
1083 goto failed;
1084 }
1085 if (uspi->s_bsize < 4096) {
1086 pr_err("%s(): block size %u is too small\n",
1087 __func__, uspi->s_bsize);
1088 goto failed;
1089 }
1090 if (uspi->s_bsize / uspi->s_fsize > 8) {
1091 pr_err("%s(): too many fragments per block (%u)\n",
1092 __func__, uspi->s_bsize / uspi->s_fsize);
1093 goto failed;
1094 }
1095 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1096 ubh_brelse_uspi(uspi);
1097 ubh = NULL;
1098 block_size = uspi->s_fsize;
1099 super_block_size = uspi->s_sbsize;
1100 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1101 goto again;
1102 }
1103
1104 sbi->s_flags = flags;
1105 ufs_print_super_stuff(sb, usb1, usb2, usb3);
1106
1107
1108
1109
1110
1111 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1112 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1113 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1114 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1115 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1116 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1117 switch(usb1->fs_clean) {
1118 case UFS_FSCLEAN:
1119 UFSD("fs is clean\n");
1120 break;
1121 case UFS_FSSTABLE:
1122 UFSD("fs is stable\n");
1123 break;
1124 case UFS_FSLOG:
1125 UFSD("fs is logging fs\n");
1126 break;
1127 case UFS_FSOSF1:
1128 UFSD("fs is DEC OSF/1\n");
1129 break;
1130 case UFS_FSACTIVE:
1131 pr_err("%s(): fs is active\n", __func__);
1132 sb->s_flags |= SB_RDONLY;
1133 break;
1134 case UFS_FSBAD:
1135 pr_err("%s(): fs is bad\n", __func__);
1136 sb->s_flags |= SB_RDONLY;
1137 break;
1138 default:
1139 pr_err("%s(): can't grok fs_clean 0x%x\n",
1140 __func__, usb1->fs_clean);
1141 sb->s_flags |= SB_RDONLY;
1142 break;
1143 }
1144 } else {
1145 pr_err("%s(): fs needs fsck\n", __func__);
1146 sb->s_flags |= SB_RDONLY;
1147 }
1148
1149
1150
1151
1152 sb->s_op = &ufs_super_ops;
1153 sb->s_export_op = &ufs_export_ops;
1154
1155 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1156
1157 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1158 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1159 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1160 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1161 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1162 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1163
1164 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1165 uspi->s_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1166 uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1167 } else {
1168 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1169 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1170 }
1171
1172 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1173
1174
1175 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1176 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1177 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1178 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1179 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1180 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1181 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1182 uspi->s_fshift);
1183 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1184 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1185
1186 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1187 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1188 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1189 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1190 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1191 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1192 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1193 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1194
1195 if (uspi->fs_magic == UFS2_MAGIC)
1196 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1197 else
1198 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1199
1200 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1201 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1202 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1203 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1204 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1205 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1206 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1207 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1208 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1209 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1210 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1211 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1212 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1213 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1214
1215 uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize,
1216 uspi->s_minfree, 100);
1217 if (uspi->s_minfree <= 5) {
1218 uspi->s_time_to_space = ~0ULL;
1219 uspi->s_space_to_time = 0;
1220 usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE);
1221 } else {
1222 uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1;
1223 uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize,
1224 uspi->s_minfree - 2, 100) - 1;
1225 }
1226
1227
1228
1229
1230 uspi->s_fpbmask = uspi->s_fpb - 1;
1231 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1232 uspi->s_apbshift = uspi->s_bshift - 3;
1233 else
1234 uspi->s_apbshift = uspi->s_bshift - 2;
1235
1236 uspi->s_2apbshift = uspi->s_apbshift * 2;
1237 uspi->s_3apbshift = uspi->s_apbshift * 3;
1238 uspi->s_apb = 1 << uspi->s_apbshift;
1239 uspi->s_2apb = 1 << uspi->s_2apbshift;
1240 uspi->s_3apb = 1 << uspi->s_3apbshift;
1241 uspi->s_apbmask = uspi->s_apb - 1;
1242 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1243 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1244 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1245 uspi->s_bpf = uspi->s_fsize << 3;
1246 uspi->s_bpfshift = uspi->s_fshift + 3;
1247 uspi->s_bpfmask = uspi->s_bpf - 1;
1248 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1249 (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1250 uspi->s_maxsymlinklen =
1251 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1252
1253 if (uspi->fs_magic == UFS2_MAGIC)
1254 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1255 else
1256 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1257 if (uspi->s_maxsymlinklen > maxsymlen) {
1258 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1259 "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1260 uspi->s_maxsymlinklen = maxsymlen;
1261 }
1262 sb->s_maxbytes = ufs_max_bytes(sb);
1263 sb->s_max_links = UFS_LINK_MAX;
1264
1265 inode = ufs_iget(sb, UFS_ROOTINO);
1266 if (IS_ERR(inode)) {
1267 ret = PTR_ERR(inode);
1268 goto failed;
1269 }
1270 sb->s_root = d_make_root(inode);
1271 if (!sb->s_root) {
1272 ret = -ENOMEM;
1273 goto failed;
1274 }
1275
1276 ufs_setup_cstotal(sb);
1277
1278
1279
1280 if (!sb_rdonly(sb))
1281 if (!ufs_read_cylinder_structures(sb))
1282 goto failed;
1283
1284 UFSD("EXIT\n");
1285 return 0;
1286
1287failed:
1288 if (ubh)
1289 ubh_brelse_uspi (uspi);
1290 kfree (uspi);
1291 kfree(sbi);
1292 sb->s_fs_info = NULL;
1293 UFSD("EXIT (FAILED)\n");
1294 return ret;
1295
1296failed_nomem:
1297 UFSD("EXIT (NOMEM)\n");
1298 return -ENOMEM;
1299}
1300
1301static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1302{
1303 struct ufs_sb_private_info * uspi;
1304 struct ufs_super_block_first * usb1;
1305 struct ufs_super_block_third * usb3;
1306 unsigned new_mount_opt, ufstype;
1307 unsigned flags;
1308
1309 sync_filesystem(sb);
1310 mutex_lock(&UFS_SB(sb)->s_lock);
1311 uspi = UFS_SB(sb)->s_uspi;
1312 flags = UFS_SB(sb)->s_flags;
1313 usb1 = ubh_get_usb_first(uspi);
1314 usb3 = ubh_get_usb_third(uspi);
1315
1316
1317
1318
1319
1320 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1321 new_mount_opt = 0;
1322 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1323 if (!ufs_parse_options (data, &new_mount_opt)) {
1324 mutex_unlock(&UFS_SB(sb)->s_lock);
1325 return -EINVAL;
1326 }
1327 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1328 new_mount_opt |= ufstype;
1329 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1330 pr_err("ufstype can't be changed during remount\n");
1331 mutex_unlock(&UFS_SB(sb)->s_lock);
1332 return -EINVAL;
1333 }
1334
1335 if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) {
1336 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1337 mutex_unlock(&UFS_SB(sb)->s_lock);
1338 return 0;
1339 }
1340
1341
1342
1343
1344 if (*mount_flags & SB_RDONLY) {
1345 ufs_put_super_internal(sb);
1346 usb1->fs_time = ufs_get_seconds(sb);
1347 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1348 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1349 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1350 ufs_set_fs_state(sb, usb1, usb3,
1351 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1352 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1353 sb->s_flags |= SB_RDONLY;
1354 } else {
1355
1356
1357
1358#ifndef CONFIG_UFS_FS_WRITE
1359 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
1360 mutex_unlock(&UFS_SB(sb)->s_lock);
1361 return -EINVAL;
1362#else
1363 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1364 ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1365 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1366 ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1367 ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1368 pr_err("this ufstype is read-only supported\n");
1369 mutex_unlock(&UFS_SB(sb)->s_lock);
1370 return -EINVAL;
1371 }
1372 if (!ufs_read_cylinder_structures(sb)) {
1373 pr_err("failed during remounting\n");
1374 mutex_unlock(&UFS_SB(sb)->s_lock);
1375 return -EPERM;
1376 }
1377 sb->s_flags &= ~SB_RDONLY;
1378#endif
1379 }
1380 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1381 mutex_unlock(&UFS_SB(sb)->s_lock);
1382 return 0;
1383}
1384
1385static int ufs_show_options(struct seq_file *seq, struct dentry *root)
1386{
1387 struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
1388 unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1389 const struct match_token *tp = tokens;
1390
1391 while (tp->token != Opt_onerror_panic && tp->token != mval)
1392 ++tp;
1393 BUG_ON(tp->token == Opt_onerror_panic);
1394 seq_printf(seq, ",%s", tp->pattern);
1395
1396 mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1397 while (tp->token != Opt_err && tp->token != mval)
1398 ++tp;
1399 BUG_ON(tp->token == Opt_err);
1400 seq_printf(seq, ",%s", tp->pattern);
1401
1402 return 0;
1403}
1404
1405static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1406{
1407 struct super_block *sb = dentry->d_sb;
1408 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1409 unsigned flags = UFS_SB(sb)->s_flags;
1410 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1411
1412 mutex_lock(&UFS_SB(sb)->s_lock);
1413
1414 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1415 buf->f_type = UFS2_MAGIC;
1416 else
1417 buf->f_type = UFS_MAGIC;
1418
1419 buf->f_blocks = uspi->s_dsize;
1420 buf->f_bfree = ufs_freefrags(uspi);
1421 buf->f_ffree = uspi->cs_total.cs_nifree;
1422 buf->f_bsize = sb->s_blocksize;
1423 buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks)
1424 ? (buf->f_bfree - uspi->s_root_blocks) : 0;
1425 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1426 buf->f_namelen = UFS_MAXNAMLEN;
1427 buf->f_fsid.val[0] = (u32)id;
1428 buf->f_fsid.val[1] = (u32)(id >> 32);
1429
1430 mutex_unlock(&UFS_SB(sb)->s_lock);
1431
1432 return 0;
1433}
1434
1435static struct kmem_cache * ufs_inode_cachep;
1436
1437static struct inode *ufs_alloc_inode(struct super_block *sb)
1438{
1439 struct ufs_inode_info *ei;
1440
1441 ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
1442 if (!ei)
1443 return NULL;
1444
1445 inode_set_iversion(&ei->vfs_inode, 1);
1446 seqlock_init(&ei->meta_lock);
1447 mutex_init(&ei->truncate_mutex);
1448 return &ei->vfs_inode;
1449}
1450
1451static void ufs_free_in_core_inode(struct inode *inode)
1452{
1453 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1454}
1455
1456static void init_once(void *foo)
1457{
1458 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1459
1460 inode_init_once(&ei->vfs_inode);
1461}
1462
1463static int __init init_inodecache(void)
1464{
1465 ufs_inode_cachep = kmem_cache_create_usercopy("ufs_inode_cache",
1466 sizeof(struct ufs_inode_info), 0,
1467 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|
1468 SLAB_ACCOUNT),
1469 offsetof(struct ufs_inode_info, i_u1.i_symlink),
1470 sizeof_field(struct ufs_inode_info,
1471 i_u1.i_symlink),
1472 init_once);
1473 if (ufs_inode_cachep == NULL)
1474 return -ENOMEM;
1475 return 0;
1476}
1477
1478static void destroy_inodecache(void)
1479{
1480
1481
1482
1483
1484 rcu_barrier();
1485 kmem_cache_destroy(ufs_inode_cachep);
1486}
1487
1488static const struct super_operations ufs_super_ops = {
1489 .alloc_inode = ufs_alloc_inode,
1490 .free_inode = ufs_free_in_core_inode,
1491 .write_inode = ufs_write_inode,
1492 .evict_inode = ufs_evict_inode,
1493 .put_super = ufs_put_super,
1494 .sync_fs = ufs_sync_fs,
1495 .statfs = ufs_statfs,
1496 .remount_fs = ufs_remount,
1497 .show_options = ufs_show_options,
1498};
1499
1500static struct dentry *ufs_mount(struct file_system_type *fs_type,
1501 int flags, const char *dev_name, void *data)
1502{
1503 return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1504}
1505
1506static struct file_system_type ufs_fs_type = {
1507 .owner = THIS_MODULE,
1508 .name = "ufs",
1509 .mount = ufs_mount,
1510 .kill_sb = kill_block_super,
1511 .fs_flags = FS_REQUIRES_DEV,
1512};
1513MODULE_ALIAS_FS("ufs");
1514
1515static int __init init_ufs_fs(void)
1516{
1517 int err = init_inodecache();
1518 if (err)
1519 goto out1;
1520 err = register_filesystem(&ufs_fs_type);
1521 if (err)
1522 goto out;
1523 return 0;
1524out:
1525 destroy_inodecache();
1526out1:
1527 return err;
1528}
1529
1530static void __exit exit_ufs_fs(void)
1531{
1532 unregister_filesystem(&ufs_fs_type);
1533 destroy_inodecache();
1534}
1535
1536module_init(init_ufs_fs)
1537module_exit(exit_ufs_fs)
1538MODULE_LICENSE("GPL");
1539
