5 * Daniel Pirkl <daniel.pirkl@email.cz>
6 * Charles University, Faculty of Mathematics and Physics
11 * linux/fs/ext2/super.c
13 * Copyright (C) 1992, 1993, 1994, 1995
14 * Remy Card (card@masi.ibp.fr)
15 * Laboratoire MASI - Institut Blaise Pascal
16 * Universite Pierre et Marie Curie (Paris VI)
20 * linux/fs/minix/inode.c
22 * Copyright (C) 1991, 1992 Linus Torvalds
24 * Big-endian to little-endian byte-swapping/bitmaps by
25 * David S. Miller (davem@caip.rutgers.edu), 1995
31 * linux/fs/ufs/super.c
34 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
35 * Laboratory for Computer Science Research Computing Facility
36 * Rutgers, The State University of New Jersey
38 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
40 * Kernel module support added on 96/04/26 by
41 * Stefan Reinauer <stepan@home.culture.mipt.ru>
43 * Module usage counts added on 96/04/29 by
44 * Gertjan van Wingerde <gwingerde@gmail.com>
46 * Clean swab support on 19970406 by
47 * Francois-Rene Rideau <fare@tunes.org>
49 * 4.4BSD (FreeBSD) support added on February 1st 1998 by
50 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
51 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
53 * NeXTstep support added on February 5th 1998 by
54 * Niels Kristian Bech Jensen <nkbj@image.dk>.
56 * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
58 * HP/UX hfs filesystem support added by
59 * Martin K. Petersen <mkp@mkp.net>, August 1999
61 * UFS2 (of FreeBSD 5.x) support added by
62 * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
64 * UFS2 write support added by
65 * Evgeniy Dushistov <dushistov@mail.ru>, 2007
68 #include <linux/exportfs.h>
69 #include <linux/module.h>
70 #include <linux/bitops.h>
74 #include <asm/uaccess.h>
76 #include <linux/errno.h>
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>
83 #include <linux/init.h>
84 #include <linux/parser.h>
85 #include <linux/buffer_head.h>
86 #include <linux/vfs.h>
87 #include <linux/log2.h>
88 #include <linux/mount.h>
89 #include <linux/seq_file.h>
96 void lock_ufs(struct super_block *sb)
98 #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
99 struct ufs_sb_info *sbi = UFS_SB(sb);
101 mutex_lock(&sbi->mutex);
102 sbi->mutex_owner = current;
106 void unlock_ufs(struct super_block *sb)
108 #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
109 struct ufs_sb_info *sbi = UFS_SB(sb);
111 sbi->mutex_owner = NULL;
112 mutex_unlock(&sbi->mutex);
116 static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
118 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
121 if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg)
122 return ERR_PTR(-ESTALE);
124 inode = ufs_iget(sb, ino);
126 return ERR_CAST(inode);
127 if (generation && inode->i_generation != generation) {
129 return ERR_PTR(-ESTALE);
134 static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
135 int fh_len, int fh_type)
137 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
140 static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
141 int fh_len, int fh_type)
143 return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
146 static struct dentry *ufs_get_parent(struct dentry *child)
148 struct qstr dot_dot = QSTR_INIT("..", 2);
151 ino = ufs_inode_by_name(child->d_inode, &dot_dot);
153 return ERR_PTR(-ENOENT);
154 return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino));
157 static const struct export_operations ufs_export_ops = {
158 .fh_to_dentry = ufs_fh_to_dentry,
159 .fh_to_parent = ufs_fh_to_parent,
160 .get_parent = ufs_get_parent,
163 #ifdef CONFIG_UFS_DEBUG
165 * Print contents of ufs_super_block, useful for debugging
167 static void ufs_print_super_stuff(struct super_block *sb,
168 struct ufs_super_block_first *usb1,
169 struct ufs_super_block_second *usb2,
170 struct ufs_super_block_third *usb3)
172 u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
174 pr_debug("ufs_print_super_stuff\n");
175 pr_debug(" magic: 0x%x\n", magic);
176 if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
177 pr_debug(" fs_size: %llu\n", (unsigned long long)
178 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
179 pr_debug(" fs_dsize: %llu\n", (unsigned long long)
180 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
181 pr_debug(" bsize: %u\n",
182 fs32_to_cpu(sb, usb1->fs_bsize));
183 pr_debug(" fsize: %u\n",
184 fs32_to_cpu(sb, usb1->fs_fsize));
185 pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
186 pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
187 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
188 pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
189 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
190 pr_debug(" cs_nbfree(No of free blocks): %llu\n",
192 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
193 pr_info(" cs_nifree(Num of free inodes): %llu\n",
195 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
196 pr_info(" cs_nffree(Num of free frags): %llu\n",
198 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
199 pr_info(" fs_maxsymlinklen: %u\n",
200 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
202 pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
203 pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
204 pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
205 pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
206 pr_debug(" cgoffset: %u\n",
207 fs32_to_cpu(sb, usb1->fs_cgoffset));
208 pr_debug(" ~cgmask: 0x%x\n",
209 ~fs32_to_cpu(sb, usb1->fs_cgmask));
210 pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
211 pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
212 pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
213 pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
214 pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
215 pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
216 pr_debug(" fragshift: %u\n",
217 fs32_to_cpu(sb, usb1->fs_fragshift));
218 pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
219 pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
220 pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
221 pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
222 pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
223 pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
224 pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
225 pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
226 pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
227 pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
228 pr_debug(" fstodb: %u\n",
229 fs32_to_cpu(sb, usb1->fs_fsbtodb));
230 pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
231 pr_debug(" ndir %u\n",
232 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
233 pr_debug(" nifree %u\n",
234 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
235 pr_debug(" nbfree %u\n",
236 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
237 pr_debug(" nffree %u\n",
238 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
244 * Print contents of ufs_cylinder_group, useful for debugging
246 static void ufs_print_cylinder_stuff(struct super_block *sb,
247 struct ufs_cylinder_group *cg)
249 pr_debug("\nufs_print_cylinder_stuff\n");
250 pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
251 pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
252 pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
253 pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
254 pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
255 pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
256 pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
257 pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
258 pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
259 pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
260 pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
261 pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
262 pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
263 pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
264 pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
265 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
266 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
267 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
268 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
269 pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
270 pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
271 pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
272 pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
273 pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
274 pr_debug(" clustersumoff %u\n",
275 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
276 pr_debug(" clusteroff %u\n",
277 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
278 pr_debug(" nclusterblks %u\n",
279 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
283 # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
284 # define ufs_print_cylinder_stuff(sb, cg) /**/
285 #endif /* CONFIG_UFS_DEBUG */
287 static const struct super_operations ufs_super_ops;
289 void ufs_error (struct super_block * sb, const char * function,
290 const char * fmt, ...)
292 struct ufs_sb_private_info * uspi;
293 struct ufs_super_block_first * usb1;
294 struct va_format vaf;
297 uspi = UFS_SB(sb)->s_uspi;
298 usb1 = ubh_get_usb_first(uspi);
300 if (!(sb->s_flags & MS_RDONLY)) {
301 usb1->fs_clean = UFS_FSBAD;
302 ubh_mark_buffer_dirty(USPI_UBH(uspi));
303 ufs_mark_sb_dirty(sb);
304 sb->s_flags |= MS_RDONLY;
309 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
310 case UFS_MOUNT_ONERROR_PANIC:
311 panic("panic (device %s): %s: %pV\n",
312 sb->s_id, function, &vaf);
314 case UFS_MOUNT_ONERROR_LOCK:
315 case UFS_MOUNT_ONERROR_UMOUNT:
316 case UFS_MOUNT_ONERROR_REPAIR:
317 pr_crit("error (device %s): %s: %pV\n",
318 sb->s_id, function, &vaf);
323 void ufs_panic (struct super_block * sb, const char * function,
324 const char * fmt, ...)
326 struct ufs_sb_private_info * uspi;
327 struct ufs_super_block_first * usb1;
328 struct va_format vaf;
331 uspi = UFS_SB(sb)->s_uspi;
332 usb1 = ubh_get_usb_first(uspi);
334 if (!(sb->s_flags & MS_RDONLY)) {
335 usb1->fs_clean = UFS_FSBAD;
336 ubh_mark_buffer_dirty(USPI_UBH(uspi));
337 ufs_mark_sb_dirty(sb);
342 sb->s_flags |= MS_RDONLY;
343 pr_crit("panic (device %s): %s: %pV\n",
344 sb->s_id, function, &vaf);
348 void ufs_warning (struct super_block * sb, const char * function,
349 const char * fmt, ...)
351 struct va_format vaf;
357 pr_warn("(device %s): %s: %pV\n",
358 sb->s_id, function, &vaf);
363 Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
364 Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
365 Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
366 Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
367 Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
368 Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
369 Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
370 Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
371 Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
372 Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
373 Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
374 Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
375 Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
376 Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
380 static const match_table_t tokens = {
381 {Opt_type_old, "ufstype=old"},
382 {Opt_type_sunx86, "ufstype=sunx86"},
383 {Opt_type_sun, "ufstype=sun"},
384 {Opt_type_sunos, "ufstype=sunos"},
385 {Opt_type_44bsd, "ufstype=44bsd"},
386 {Opt_type_ufs2, "ufstype=ufs2"},
387 {Opt_type_ufs2, "ufstype=5xbsd"},
388 {Opt_type_hp, "ufstype=hp"},
389 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
390 {Opt_type_nextstep, "ufstype=nextstep"},
391 {Opt_type_openstep, "ufstype=openstep"},
392 /*end of possible ufs types */
393 {Opt_onerror_panic, "onerror=panic"},
394 {Opt_onerror_lock, "onerror=lock"},
395 {Opt_onerror_umount, "onerror=umount"},
396 {Opt_onerror_repair, "onerror=repair"},
400 static int ufs_parse_options (char * options, unsigned * mount_options)
409 while ((p = strsep(&options, ",")) != NULL) {
410 substring_t args[MAX_OPT_ARGS];
415 token = match_token(p, tokens, args);
418 ufs_clear_opt (*mount_options, UFSTYPE);
419 ufs_set_opt (*mount_options, UFSTYPE_OLD);
421 case Opt_type_sunx86:
422 ufs_clear_opt (*mount_options, UFSTYPE);
423 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
426 ufs_clear_opt (*mount_options, UFSTYPE);
427 ufs_set_opt (*mount_options, UFSTYPE_SUN);
430 ufs_clear_opt(*mount_options, UFSTYPE);
431 ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
434 ufs_clear_opt (*mount_options, UFSTYPE);
435 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
438 ufs_clear_opt(*mount_options, UFSTYPE);
439 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
442 ufs_clear_opt (*mount_options, UFSTYPE);
443 ufs_set_opt (*mount_options, UFSTYPE_HP);
445 case Opt_type_nextstepcd:
446 ufs_clear_opt (*mount_options, UFSTYPE);
447 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
449 case Opt_type_nextstep:
450 ufs_clear_opt (*mount_options, UFSTYPE);
451 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
453 case Opt_type_openstep:
454 ufs_clear_opt (*mount_options, UFSTYPE);
455 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
457 case Opt_onerror_panic:
458 ufs_clear_opt (*mount_options, ONERROR);
459 ufs_set_opt (*mount_options, ONERROR_PANIC);
461 case Opt_onerror_lock:
462 ufs_clear_opt (*mount_options, ONERROR);
463 ufs_set_opt (*mount_options, ONERROR_LOCK);
465 case Opt_onerror_umount:
466 ufs_clear_opt (*mount_options, ONERROR);
467 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
469 case Opt_onerror_repair:
470 pr_err("Unable to do repair on error, will lock lock instead\n");
471 ufs_clear_opt (*mount_options, ONERROR);
472 ufs_set_opt (*mount_options, ONERROR_REPAIR);
475 pr_err("Invalid option: \"%s\" or missing value\n", p);
483 * Different types of UFS hold fs_cstotal in different
484 * places, and use different data structure for it.
485 * To make things simpler we just copy fs_cstotal to ufs_sb_private_info
487 static void ufs_setup_cstotal(struct super_block *sb)
489 struct ufs_sb_info *sbi = UFS_SB(sb);
490 struct ufs_sb_private_info *uspi = sbi->s_uspi;
491 struct ufs_super_block_first *usb1;
492 struct ufs_super_block_second *usb2;
493 struct ufs_super_block_third *usb3;
494 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
496 UFSD("ENTER, mtype=%u\n", mtype);
497 usb1 = ubh_get_usb_first(uspi);
498 usb2 = ubh_get_usb_second(uspi);
499 usb3 = ubh_get_usb_third(uspi);
501 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
502 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
503 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
504 /*we have statistic in different place, then usual*/
505 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
506 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
507 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
508 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
510 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
511 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
512 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
513 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
519 * Read on-disk structures associated with cylinder groups
521 static int ufs_read_cylinder_structures(struct super_block *sb)
523 struct ufs_sb_info *sbi = UFS_SB(sb);
524 struct ufs_sb_private_info *uspi = sbi->s_uspi;
525 struct ufs_buffer_head * ubh;
526 unsigned char * base, * space;
527 unsigned size, blks, i;
532 * Read cs structures from (usually) first data block
535 size = uspi->s_cssize;
536 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
537 base = space = kmalloc(size, GFP_NOFS);
540 sbi->s_csp = (struct ufs_csum *)space;
541 for (i = 0; i < blks; i += uspi->s_fpb) {
542 size = uspi->s_bsize;
543 if (i + uspi->s_fpb > blks)
544 size = (blks - i) * uspi->s_fsize;
546 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
551 ubh_ubhcpymem (space, ubh, size);
559 * Read cylinder group (we read only first fragment from block
560 * at this time) and prepare internal data structures for cg caching.
562 if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS)))
564 for (i = 0; i < uspi->s_ncg; i++)
565 sbi->s_ucg[i] = NULL;
566 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
567 sbi->s_ucpi[i] = NULL;
568 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
570 for (i = 0; i < uspi->s_ncg; i++) {
571 UFSD("read cg %u\n", i);
572 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
574 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
577 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
579 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
580 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
582 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
584 sbi->s_cg_loaded = 0;
591 for (i = 0; i < uspi->s_ncg; i++)
593 brelse (sbi->s_ucg[i]);
595 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
596 kfree (sbi->s_ucpi[i]);
598 UFSD("EXIT (FAILED)\n");
603 * Sync our internal copy of fs_cstotal with disk
605 static void ufs_put_cstotal(struct super_block *sb)
607 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
608 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
609 struct ufs_super_block_first *usb1;
610 struct ufs_super_block_second *usb2;
611 struct ufs_super_block_third *usb3;
614 usb1 = ubh_get_usb_first(uspi);
615 usb2 = ubh_get_usb_second(uspi);
616 usb3 = ubh_get_usb_third(uspi);
618 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
619 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
620 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
621 /*we have statistic in different place, then usual*/
622 usb2->fs_un.fs_u2.cs_ndir =
623 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
624 usb2->fs_un.fs_u2.cs_nbfree =
625 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
626 usb3->fs_un1.fs_u2.cs_nifree =
627 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
628 usb3->fs_un1.fs_u2.cs_nffree =
629 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
631 usb1->fs_cstotal.cs_ndir =
632 cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
633 usb1->fs_cstotal.cs_nbfree =
634 cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
635 usb1->fs_cstotal.cs_nifree =
636 cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
637 usb1->fs_cstotal.cs_nffree =
638 cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
640 ubh_mark_buffer_dirty(USPI_UBH(uspi));
641 ufs_print_super_stuff(sb, usb1, usb2, usb3);
646 * ufs_put_super_internal() - put on-disk intrenal structures
647 * @sb: pointer to super_block structure
648 * Put on-disk structures associated with cylinder groups
649 * and write them back to disk, also update cs_total on disk
651 static void ufs_put_super_internal(struct super_block *sb)
653 struct ufs_sb_info *sbi = UFS_SB(sb);
654 struct ufs_sb_private_info *uspi = sbi->s_uspi;
655 struct ufs_buffer_head * ubh;
656 unsigned char * base, * space;
657 unsigned blks, size, i;
663 size = uspi->s_cssize;
664 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
665 base = space = (char*) sbi->s_csp;
666 for (i = 0; i < blks; i += uspi->s_fpb) {
667 size = uspi->s_bsize;
668 if (i + uspi->s_fpb > blks)
669 size = (blks - i) * uspi->s_fsize;
671 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
673 ubh_memcpyubh (ubh, space, size);
675 ubh_mark_buffer_uptodate (ubh, 1);
676 ubh_mark_buffer_dirty (ubh);
679 for (i = 0; i < sbi->s_cg_loaded; i++) {
680 ufs_put_cylinder (sb, i);
681 kfree (sbi->s_ucpi[i]);
683 for (; i < UFS_MAX_GROUP_LOADED; i++)
684 kfree (sbi->s_ucpi[i]);
685 for (i = 0; i < uspi->s_ncg; i++)
686 brelse (sbi->s_ucg[i]);
693 static int ufs_sync_fs(struct super_block *sb, int wait)
695 struct ufs_sb_private_info * uspi;
696 struct ufs_super_block_first * usb1;
697 struct ufs_super_block_third * usb3;
704 flags = UFS_SB(sb)->s_flags;
705 uspi = UFS_SB(sb)->s_uspi;
706 usb1 = ubh_get_usb_first(uspi);
707 usb3 = ubh_get_usb_third(uspi);
709 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
710 if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
711 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
712 (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
713 ufs_set_fs_state(sb, usb1, usb3,
714 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
723 static void delayed_sync_fs(struct work_struct *work)
725 struct ufs_sb_info *sbi;
727 sbi = container_of(work, struct ufs_sb_info, sync_work.work);
729 spin_lock(&sbi->work_lock);
730 sbi->work_queued = 0;
731 spin_unlock(&sbi->work_lock);
733 ufs_sync_fs(sbi->sb, 1);
736 void ufs_mark_sb_dirty(struct super_block *sb)
738 struct ufs_sb_info *sbi = UFS_SB(sb);
741 spin_lock(&sbi->work_lock);
742 if (!sbi->work_queued) {
743 delay = msecs_to_jiffies(dirty_writeback_interval * 10);
744 queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
745 sbi->work_queued = 1;
747 spin_unlock(&sbi->work_lock);
750 static void ufs_put_super(struct super_block *sb)
752 struct ufs_sb_info * sbi = UFS_SB(sb);
756 if (!(sb->s_flags & MS_RDONLY))
757 ufs_put_super_internal(sb);
758 cancel_delayed_work_sync(&sbi->sync_work);
760 ubh_brelse_uspi (sbi->s_uspi);
762 mutex_destroy(&sbi->mutex);
764 sb->s_fs_info = NULL;
769 static int ufs_fill_super(struct super_block *sb, void *data, int silent)
771 struct ufs_sb_info * sbi;
772 struct ufs_sb_private_info * uspi;
773 struct ufs_super_block_first * usb1;
774 struct ufs_super_block_second * usb2;
775 struct ufs_super_block_third * usb3;
776 struct ufs_buffer_head * ubh;
778 unsigned block_size, super_block_size;
780 unsigned super_block_offset;
790 #ifndef CONFIG_UFS_FS_WRITE
791 if (!(sb->s_flags & MS_RDONLY)) {
792 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
797 sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
803 UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
805 mutex_init(&sbi->mutex);
806 spin_lock_init(&sbi->work_lock);
807 INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
809 * Set default mount options
810 * Parse mount options
812 sbi->s_mount_opt = 0;
813 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
814 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
815 pr_err("wrong mount options\n");
818 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
820 pr_err("You didn't specify the type of your ufs filesystem\n\n"
821 "mount -t ufs -o ufstype="
822 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
823 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
824 "default is ufstype=old\n");
825 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
828 uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
832 uspi->s_dirblksize = UFS_SECTOR_SIZE;
833 super_block_offset=UFS_SBLOCK;
835 /* Keep 2Gig file limit. Some UFS variants need to override
836 this but as I don't know which I'll let those in the know loosen
838 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
839 case UFS_MOUNT_UFSTYPE_44BSD:
840 UFSD("ufstype=44bsd\n");
841 uspi->s_fsize = block_size = 512;
842 uspi->s_fmask = ~(512 - 1);
844 uspi->s_sbsize = super_block_size = 1536;
846 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
848 case UFS_MOUNT_UFSTYPE_UFS2:
849 UFSD("ufstype=ufs2\n");
850 super_block_offset=SBLOCK_UFS2;
851 uspi->s_fsize = block_size = 512;
852 uspi->s_fmask = ~(512 - 1);
854 uspi->s_sbsize = super_block_size = 1536;
856 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
859 case UFS_MOUNT_UFSTYPE_SUN:
860 UFSD("ufstype=sun\n");
861 uspi->s_fsize = block_size = 1024;
862 uspi->s_fmask = ~(1024 - 1);
864 uspi->s_sbsize = super_block_size = 2048;
866 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
867 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
870 case UFS_MOUNT_UFSTYPE_SUNOS:
871 UFSD("ufstype=sunos\n");
872 uspi->s_fsize = block_size = 1024;
873 uspi->s_fmask = ~(1024 - 1);
875 uspi->s_sbsize = 2048;
876 super_block_size = 2048;
878 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
879 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
882 case UFS_MOUNT_UFSTYPE_SUNx86:
883 UFSD("ufstype=sunx86\n");
884 uspi->s_fsize = block_size = 1024;
885 uspi->s_fmask = ~(1024 - 1);
887 uspi->s_sbsize = super_block_size = 2048;
889 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
890 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
893 case UFS_MOUNT_UFSTYPE_OLD:
894 UFSD("ufstype=old\n");
895 uspi->s_fsize = block_size = 1024;
896 uspi->s_fmask = ~(1024 - 1);
898 uspi->s_sbsize = super_block_size = 2048;
900 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
901 if (!(sb->s_flags & MS_RDONLY)) {
903 pr_info("ufstype=old is supported read-only\n");
904 sb->s_flags |= MS_RDONLY;
908 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
909 UFSD("ufstype=nextstep\n");
910 uspi->s_fsize = block_size = 1024;
911 uspi->s_fmask = ~(1024 - 1);
913 uspi->s_sbsize = super_block_size = 2048;
915 uspi->s_dirblksize = 1024;
916 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
917 if (!(sb->s_flags & MS_RDONLY)) {
919 pr_info("ufstype=nextstep is supported read-only\n");
920 sb->s_flags |= MS_RDONLY;
924 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
925 UFSD("ufstype=nextstep-cd\n");
926 uspi->s_fsize = block_size = 2048;
927 uspi->s_fmask = ~(2048 - 1);
929 uspi->s_sbsize = super_block_size = 2048;
931 uspi->s_dirblksize = 1024;
932 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
933 if (!(sb->s_flags & MS_RDONLY)) {
935 pr_info("ufstype=nextstep-cd is supported read-only\n");
936 sb->s_flags |= MS_RDONLY;
940 case UFS_MOUNT_UFSTYPE_OPENSTEP:
941 UFSD("ufstype=openstep\n");
942 uspi->s_fsize = block_size = 1024;
943 uspi->s_fmask = ~(1024 - 1);
945 uspi->s_sbsize = super_block_size = 2048;
947 uspi->s_dirblksize = 1024;
948 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
949 if (!(sb->s_flags & MS_RDONLY)) {
951 pr_info("ufstype=openstep is supported read-only\n");
952 sb->s_flags |= MS_RDONLY;
956 case UFS_MOUNT_UFSTYPE_HP:
957 UFSD("ufstype=hp\n");
958 uspi->s_fsize = block_size = 1024;
959 uspi->s_fmask = ~(1024 - 1);
961 uspi->s_sbsize = super_block_size = 2048;
963 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
964 if (!(sb->s_flags & MS_RDONLY)) {
966 pr_info("ufstype=hp is supported read-only\n");
967 sb->s_flags |= MS_RDONLY;
972 pr_err("unknown ufstype\n");
977 if (!sb_set_blocksize(sb, block_size)) {
978 pr_err("failed to set blocksize\n");
983 * read ufs super block from device
986 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
991 usb1 = ubh_get_usb_first(uspi);
992 usb2 = ubh_get_usb_second(uspi);
993 usb3 = ubh_get_usb_third(uspi);
995 /* Sort out mod used on SunOS 4.1.3 for fs_state */
996 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
997 if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
998 (uspi->s_postblformat != UFS_42POSTBLFMT)) {
999 flags &= ~UFS_ST_MASK;
1000 flags |= UFS_ST_SUN;
1004 * Check ufs magic number
1006 sbi->s_bytesex = BYTESEX_LE;
1007 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1016 sbi->s_bytesex = BYTESEX_BE;
1017 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1027 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
1028 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
1029 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
1030 && uspi->s_sbbase < 256) {
1031 ubh_brelse_uspi(uspi);
1033 uspi->s_sbbase += 8;
1037 pr_err("%s(): bad magic number\n", __func__);
1042 * Check block and fragment sizes
1044 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1045 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1046 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1047 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1048 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1050 if (!is_power_of_2(uspi->s_fsize)) {
1051 pr_err("%s(): fragment size %u is not a power of 2\n",
1052 __func__, uspi->s_fsize);
1055 if (uspi->s_fsize < 512) {
1056 pr_err("%s(): fragment size %u is too small\n",
1057 __func__, uspi->s_fsize);
1060 if (uspi->s_fsize > 4096) {
1061 pr_err("%s(): fragment size %u is too large\n",
1062 __func__, uspi->s_fsize);
1065 if (!is_power_of_2(uspi->s_bsize)) {
1066 pr_err("%s(): block size %u is not a power of 2\n",
1067 __func__, uspi->s_bsize);
1070 if (uspi->s_bsize < 4096) {
1071 pr_err("%s(): block size %u is too small\n",
1072 __func__, uspi->s_bsize);
1075 if (uspi->s_bsize / uspi->s_fsize > 8) {
1076 pr_err("%s(): too many fragments per block (%u)\n",
1077 __func__, uspi->s_bsize / uspi->s_fsize);
1080 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1081 ubh_brelse_uspi(uspi);
1083 block_size = uspi->s_fsize;
1084 super_block_size = uspi->s_sbsize;
1085 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1089 sbi->s_flags = flags;/*after that line some functions use s_flags*/
1090 ufs_print_super_stuff(sb, usb1, usb2, usb3);
1093 * Check, if file system was correctly unmounted.
1094 * If not, make it read only.
1096 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1097 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1098 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1099 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1100 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1101 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1102 switch(usb1->fs_clean) {
1104 UFSD("fs is clean\n");
1107 UFSD("fs is stable\n");
1110 UFSD("fs is logging fs\n");
1113 UFSD("fs is DEC OSF/1\n");
1116 pr_err("%s(): fs is active\n", __func__);
1117 sb->s_flags |= MS_RDONLY;
1120 pr_err("%s(): fs is bad\n", __func__);
1121 sb->s_flags |= MS_RDONLY;
1124 pr_err("%s(): can't grok fs_clean 0x%x\n",
1125 __func__, usb1->fs_clean);
1126 sb->s_flags |= MS_RDONLY;
1130 pr_err("%s(): fs needs fsck\n", __func__);
1131 sb->s_flags |= MS_RDONLY;
1135 * Read ufs_super_block into internal data structures
1137 sb->s_op = &ufs_super_ops;
1138 sb->s_export_op = &ufs_export_ops;
1140 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1142 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1143 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1144 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1145 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1146 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1147 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1149 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1150 uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1151 uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1153 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1154 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1157 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1158 /* s_bsize already set */
1159 /* s_fsize already set */
1160 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1161 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1162 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1163 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1164 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1165 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1166 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1168 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1169 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1170 /* s_sbsize already set */
1171 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1172 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1173 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1174 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1175 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1176 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1177 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1178 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1180 if (uspi->fs_magic == UFS2_MAGIC)
1181 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1183 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1185 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1186 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1187 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1188 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1189 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1190 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1191 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1192 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1193 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1194 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1195 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1196 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1197 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1198 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1201 * Compute another frequently used values
1203 uspi->s_fpbmask = uspi->s_fpb - 1;
1204 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1205 uspi->s_apbshift = uspi->s_bshift - 3;
1207 uspi->s_apbshift = uspi->s_bshift - 2;
1209 uspi->s_2apbshift = uspi->s_apbshift * 2;
1210 uspi->s_3apbshift = uspi->s_apbshift * 3;
1211 uspi->s_apb = 1 << uspi->s_apbshift;
1212 uspi->s_2apb = 1 << uspi->s_2apbshift;
1213 uspi->s_3apb = 1 << uspi->s_3apbshift;
1214 uspi->s_apbmask = uspi->s_apb - 1;
1215 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1216 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1217 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1218 uspi->s_bpf = uspi->s_fsize << 3;
1219 uspi->s_bpfshift = uspi->s_fshift + 3;
1220 uspi->s_bpfmask = uspi->s_bpf - 1;
1221 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1222 (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1223 uspi->s_maxsymlinklen =
1224 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1226 if (uspi->fs_magic == UFS2_MAGIC)
1227 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1229 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1230 if (uspi->s_maxsymlinklen > maxsymlen) {
1231 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1232 "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1233 uspi->s_maxsymlinklen = maxsymlen;
1235 sb->s_max_links = UFS_LINK_MAX;
1237 inode = ufs_iget(sb, UFS_ROOTINO);
1238 if (IS_ERR(inode)) {
1239 ret = PTR_ERR(inode);
1242 sb->s_root = d_make_root(inode);
1248 ufs_setup_cstotal(sb);
1250 * Read cylinder group structures
1252 if (!(sb->s_flags & MS_RDONLY))
1253 if (!ufs_read_cylinder_structures(sb))
1260 mutex_destroy(&sbi->mutex);
1262 ubh_brelse_uspi (uspi);
1265 sb->s_fs_info = NULL;
1266 UFSD("EXIT (FAILED)\n");
1270 UFSD("EXIT (NOMEM)\n");
1274 static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1276 struct ufs_sb_private_info * uspi;
1277 struct ufs_super_block_first * usb1;
1278 struct ufs_super_block_third * usb3;
1279 unsigned new_mount_opt, ufstype;
1282 sync_filesystem(sb);
1284 uspi = UFS_SB(sb)->s_uspi;
1285 flags = UFS_SB(sb)->s_flags;
1286 usb1 = ubh_get_usb_first(uspi);
1287 usb3 = ubh_get_usb_third(uspi);
1290 * Allow the "check" option to be passed as a remount option.
1291 * It is not possible to change ufstype option during remount
1293 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1295 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1296 if (!ufs_parse_options (data, &new_mount_opt)) {
1300 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1301 new_mount_opt |= ufstype;
1302 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1303 pr_err("ufstype can't be changed during remount\n");
1308 if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1309 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1315 * fs was mouted as rw, remounting ro
1317 if (*mount_flags & MS_RDONLY) {
1318 ufs_put_super_internal(sb);
1319 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1320 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1321 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1322 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1323 ufs_set_fs_state(sb, usb1, usb3,
1324 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1325 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1326 sb->s_flags |= MS_RDONLY;
1329 * fs was mounted as ro, remounting rw
1331 #ifndef CONFIG_UFS_FS_WRITE
1332 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
1336 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1337 ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1338 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1339 ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1340 ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1341 pr_err("this ufstype is read-only supported\n");
1345 if (!ufs_read_cylinder_structures(sb)) {
1346 pr_err("failed during remounting\n");
1350 sb->s_flags &= ~MS_RDONLY;
1353 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1358 static int ufs_show_options(struct seq_file *seq, struct dentry *root)
1360 struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
1361 unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1362 const struct match_token *tp = tokens;
1364 while (tp->token != Opt_onerror_panic && tp->token != mval)
1366 BUG_ON(tp->token == Opt_onerror_panic);
1367 seq_printf(seq, ",%s", tp->pattern);
1369 mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1370 while (tp->token != Opt_err && tp->token != mval)
1372 BUG_ON(tp->token == Opt_err);
1373 seq_printf(seq, ",%s", tp->pattern);
1378 static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1380 struct super_block *sb = dentry->d_sb;
1381 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1382 unsigned flags = UFS_SB(sb)->s_flags;
1383 struct ufs_super_block_third *usb3;
1384 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1388 usb3 = ubh_get_usb_third(uspi);
1390 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1391 buf->f_type = UFS2_MAGIC;
1392 buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1394 buf->f_type = UFS_MAGIC;
1395 buf->f_blocks = uspi->s_dsize;
1397 buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1398 uspi->cs_total.cs_nffree;
1399 buf->f_ffree = uspi->cs_total.cs_nifree;
1400 buf->f_bsize = sb->s_blocksize;
1401 buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1402 ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1403 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1404 buf->f_namelen = UFS_MAXNAMLEN;
1405 buf->f_fsid.val[0] = (u32)id;
1406 buf->f_fsid.val[1] = (u32)(id >> 32);
1413 static struct kmem_cache * ufs_inode_cachep;
1415 static struct inode *ufs_alloc_inode(struct super_block *sb)
1417 struct ufs_inode_info *ei;
1419 ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
1423 ei->vfs_inode.i_version = 1;
1424 return &ei->vfs_inode;
1427 static void ufs_i_callback(struct rcu_head *head)
1429 struct inode *inode = container_of(head, struct inode, i_rcu);
1430 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1433 static void ufs_destroy_inode(struct inode *inode)
1435 call_rcu(&inode->i_rcu, ufs_i_callback);
1438 static void init_once(void *foo)
1440 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1442 inode_init_once(&ei->vfs_inode);
1445 static int __init init_inodecache(void)
1447 ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1448 sizeof(struct ufs_inode_info),
1449 0, (SLAB_RECLAIM_ACCOUNT|
1452 if (ufs_inode_cachep == NULL)
1457 static void destroy_inodecache(void)
1460 * Make sure all delayed rcu free inodes are flushed before we
1464 kmem_cache_destroy(ufs_inode_cachep);
1467 static const struct super_operations ufs_super_ops = {
1468 .alloc_inode = ufs_alloc_inode,
1469 .destroy_inode = ufs_destroy_inode,
1470 .write_inode = ufs_write_inode,
1471 .evict_inode = ufs_evict_inode,
1472 .put_super = ufs_put_super,
1473 .sync_fs = ufs_sync_fs,
1474 .statfs = ufs_statfs,
1475 .remount_fs = ufs_remount,
1476 .show_options = ufs_show_options,
1479 static struct dentry *ufs_mount(struct file_system_type *fs_type,
1480 int flags, const char *dev_name, void *data)
1482 return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1485 static struct file_system_type ufs_fs_type = {
1486 .owner = THIS_MODULE,
1489 .kill_sb = kill_block_super,
1490 .fs_flags = FS_REQUIRES_DEV,
1492 MODULE_ALIAS_FS("ufs");
1494 static int __init init_ufs_fs(void)
1496 int err = init_inodecache();
1499 err = register_filesystem(&ufs_fs_type);
1504 destroy_inodecache();
1509 static void __exit exit_ufs_fs(void)
1511 unregister_filesystem(&ufs_fs_type);
1512 destroy_inodecache();
1515 module_init(init_ufs_fs)
1516 module_exit(exit_ufs_fs)
1517 MODULE_LICENSE("GPL");