5 * Daniel Pirkl <daniel.pirkl@email.cz>
6 * Charles University, Faculty of Mathematics and Physics
11 * linux/fs/ext2/super.c
13 * Copyright (C) 1992, 1993, 1994, 1995
14 * Remy Card (card@masi.ibp.fr)
15 * Laboratoire MASI - Institut Blaise Pascal
16 * Universite Pierre et Marie Curie (Paris VI)
20 * linux/fs/minix/inode.c
22 * Copyright (C) 1991, 1992 Linus Torvalds
24 * Big-endian to little-endian byte-swapping/bitmaps by
25 * David S. Miller (davem@caip.rutgers.edu), 1995
31 * linux/fs/ufs/super.c
34 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
35 * Laboratory for Computer Science Research Computing Facility
36 * Rutgers, The State University of New Jersey
38 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
40 * Kernel module support added on 96/04/26 by
41 * Stefan Reinauer <stepan@home.culture.mipt.ru>
43 * Module usage counts added on 96/04/29 by
44 * Gertjan van Wingerde <gwingerde@gmail.com>
46 * Clean swab support on 19970406 by
47 * Francois-Rene Rideau <fare@tunes.org>
49 * 4.4BSD (FreeBSD) support added on February 1st 1998 by
50 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
51 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
53 * NeXTstep support added on February 5th 1998 by
54 * Niels Kristian Bech Jensen <nkbj@image.dk>.
56 * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
58 * HP/UX hfs filesystem support added by
59 * Martin K. Petersen <mkp@mkp.net>, August 1999
61 * UFS2 (of FreeBSD 5.x) support added by
62 * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
64 * UFS2 write support added by
65 * Evgeniy Dushistov <dushistov@mail.ru>, 2007
69 #include <linux/module.h>
70 #include <linux/bitops.h>
74 #include <asm/uaccess.h>
75 #include <asm/system.h>
77 #include <linux/errno.h>
79 #include <linux/quotaops.h>
80 #include <linux/slab.h>
81 #include <linux/time.h>
82 #include <linux/stat.h>
83 #include <linux/string.h>
84 #include <linux/blkdev.h>
85 #include <linux/init.h>
86 #include <linux/parser.h>
87 #include <linux/smp_lock.h>
88 #include <linux/buffer_head.h>
89 #include <linux/vfs.h>
90 #include <linux/log2.h>
91 #include <linux/mount.h>
92 #include <linux/seq_file.h>
99 #ifdef CONFIG_UFS_DEBUG
101 * Print contents of ufs_super_block, useful for debugging
103 static void ufs_print_super_stuff(struct super_block *sb,
104 struct ufs_super_block_first *usb1,
105 struct ufs_super_block_second *usb2,
106 struct ufs_super_block_third *usb3)
108 u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
110 printk("ufs_print_super_stuff\n");
111 printk(" magic: 0x%x\n", magic);
112 if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
113 printk(" fs_size: %llu\n", (unsigned long long)
114 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
115 printk(" fs_dsize: %llu\n", (unsigned long long)
116 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
117 printk(" bsize: %u\n",
118 fs32_to_cpu(sb, usb1->fs_bsize));
119 printk(" fsize: %u\n",
120 fs32_to_cpu(sb, usb1->fs_fsize));
121 printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
122 printk(" fs_sblockloc: %llu\n", (unsigned long long)
123 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
124 printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
125 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
126 printk(" cs_nbfree(No of free blocks): %llu\n",
128 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
129 printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n",
131 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
132 printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n",
134 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
135 printk(KERN_INFO" fs_maxsymlinklen: %u\n",
136 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
138 printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
139 printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
140 printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
141 printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
142 printk(" cgoffset: %u\n",
143 fs32_to_cpu(sb, usb1->fs_cgoffset));
144 printk(" ~cgmask: 0x%x\n",
145 ~fs32_to_cpu(sb, usb1->fs_cgmask));
146 printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
147 printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
148 printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
149 printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
150 printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
151 printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
152 printk(" fragshift: %u\n",
153 fs32_to_cpu(sb, usb1->fs_fragshift));
154 printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
155 printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
156 printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
157 printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
158 printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
159 printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
160 printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
161 printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
162 printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
163 printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
164 printk(" fstodb: %u\n",
165 fs32_to_cpu(sb, usb1->fs_fsbtodb));
166 printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
168 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
169 printk(" nifree %u\n",
170 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
171 printk(" nbfree %u\n",
172 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
173 printk(" nffree %u\n",
174 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
180 * Print contents of ufs_cylinder_group, useful for debugging
182 static void ufs_print_cylinder_stuff(struct super_block *sb,
183 struct ufs_cylinder_group *cg)
185 printk("\nufs_print_cylinder_stuff\n");
186 printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
187 printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
188 printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
189 printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
190 printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
191 printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
192 printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
193 printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
194 printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
195 printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
196 printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
197 printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
198 printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
199 printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
200 printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
201 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
202 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
203 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
204 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
205 printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
206 printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
207 printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
208 printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
209 printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
210 printk(" clustersumoff %u\n",
211 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
212 printk(" clusteroff %u\n",
213 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
214 printk(" nclusterblks %u\n",
215 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
219 # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
220 # define ufs_print_cylinder_stuff(sb, cg) /**/
221 #endif /* CONFIG_UFS_DEBUG */
223 static const struct super_operations ufs_super_ops;
225 static char error_buf[1024];
227 void ufs_error (struct super_block * sb, const char * function,
228 const char * fmt, ...)
230 struct ufs_sb_private_info * uspi;
231 struct ufs_super_block_first * usb1;
234 uspi = UFS_SB(sb)->s_uspi;
235 usb1 = ubh_get_usb_first(uspi);
237 if (!(sb->s_flags & MS_RDONLY)) {
238 usb1->fs_clean = UFS_FSBAD;
239 ubh_mark_buffer_dirty(USPI_UBH(uspi));
241 sb->s_flags |= MS_RDONLY;
243 va_start (args, fmt);
244 vsnprintf (error_buf, sizeof(error_buf), fmt, args);
246 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
247 case UFS_MOUNT_ONERROR_PANIC:
248 panic ("UFS-fs panic (device %s): %s: %s\n",
249 sb->s_id, function, error_buf);
251 case UFS_MOUNT_ONERROR_LOCK:
252 case UFS_MOUNT_ONERROR_UMOUNT:
253 case UFS_MOUNT_ONERROR_REPAIR:
254 printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n",
255 sb->s_id, function, error_buf);
259 void ufs_panic (struct super_block * sb, const char * function,
260 const char * fmt, ...)
262 struct ufs_sb_private_info * uspi;
263 struct ufs_super_block_first * usb1;
267 uspi = UFS_SB(sb)->s_uspi;
268 usb1 = ubh_get_usb_first(uspi);
270 if (!(sb->s_flags & MS_RDONLY)) {
271 usb1->fs_clean = UFS_FSBAD;
272 ubh_mark_buffer_dirty(USPI_UBH(uspi));
275 va_start (args, fmt);
276 vsnprintf (error_buf, sizeof(error_buf), fmt, args);
278 sb->s_flags |= MS_RDONLY;
279 printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n",
280 sb->s_id, function, error_buf);
283 void ufs_warning (struct super_block * sb, const char * function,
284 const char * fmt, ...)
288 va_start (args, fmt);
289 vsnprintf (error_buf, sizeof(error_buf), fmt, args);
291 printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n",
292 sb->s_id, function, error_buf);
296 Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
297 Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
298 Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
299 Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
300 Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
301 Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
302 Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
303 Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
304 Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
305 Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
306 Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
307 Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
308 Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
309 Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
313 static const match_table_t tokens = {
314 {Opt_type_old, "ufstype=old"},
315 {Opt_type_sunx86, "ufstype=sunx86"},
316 {Opt_type_sun, "ufstype=sun"},
317 {Opt_type_sunos, "ufstype=sunos"},
318 {Opt_type_44bsd, "ufstype=44bsd"},
319 {Opt_type_ufs2, "ufstype=ufs2"},
320 {Opt_type_ufs2, "ufstype=5xbsd"},
321 {Opt_type_hp, "ufstype=hp"},
322 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
323 {Opt_type_nextstep, "ufstype=nextstep"},
324 {Opt_type_openstep, "ufstype=openstep"},
325 /*end of possible ufs types */
326 {Opt_onerror_panic, "onerror=panic"},
327 {Opt_onerror_lock, "onerror=lock"},
328 {Opt_onerror_umount, "onerror=umount"},
329 {Opt_onerror_repair, "onerror=repair"},
333 static int ufs_parse_options (char * options, unsigned * mount_options)
342 while ((p = strsep(&options, ",")) != NULL) {
343 substring_t args[MAX_OPT_ARGS];
348 token = match_token(p, tokens, args);
351 ufs_clear_opt (*mount_options, UFSTYPE);
352 ufs_set_opt (*mount_options, UFSTYPE_OLD);
354 case Opt_type_sunx86:
355 ufs_clear_opt (*mount_options, UFSTYPE);
356 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
359 ufs_clear_opt (*mount_options, UFSTYPE);
360 ufs_set_opt (*mount_options, UFSTYPE_SUN);
363 ufs_clear_opt(*mount_options, UFSTYPE);
364 ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
367 ufs_clear_opt (*mount_options, UFSTYPE);
368 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
371 ufs_clear_opt(*mount_options, UFSTYPE);
372 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
375 ufs_clear_opt (*mount_options, UFSTYPE);
376 ufs_set_opt (*mount_options, UFSTYPE_HP);
378 case Opt_type_nextstepcd:
379 ufs_clear_opt (*mount_options, UFSTYPE);
380 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
382 case Opt_type_nextstep:
383 ufs_clear_opt (*mount_options, UFSTYPE);
384 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
386 case Opt_type_openstep:
387 ufs_clear_opt (*mount_options, UFSTYPE);
388 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
390 case Opt_onerror_panic:
391 ufs_clear_opt (*mount_options, ONERROR);
392 ufs_set_opt (*mount_options, ONERROR_PANIC);
394 case Opt_onerror_lock:
395 ufs_clear_opt (*mount_options, ONERROR);
396 ufs_set_opt (*mount_options, ONERROR_LOCK);
398 case Opt_onerror_umount:
399 ufs_clear_opt (*mount_options, ONERROR);
400 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
402 case Opt_onerror_repair:
403 printk("UFS-fs: Unable to do repair on error, "
404 "will lock lock instead\n");
405 ufs_clear_opt (*mount_options, ONERROR);
406 ufs_set_opt (*mount_options, ONERROR_REPAIR);
409 printk("UFS-fs: Invalid option: \"%s\" "
410 "or missing value\n", p);
418 * Diffrent types of UFS hold fs_cstotal in different
419 * places, and use diffrent data structure for it.
420 * To make things simplier we just copy fs_cstotal to ufs_sb_private_info
422 static void ufs_setup_cstotal(struct super_block *sb)
424 struct ufs_sb_info *sbi = UFS_SB(sb);
425 struct ufs_sb_private_info *uspi = sbi->s_uspi;
426 struct ufs_super_block_first *usb1;
427 struct ufs_super_block_second *usb2;
428 struct ufs_super_block_third *usb3;
429 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
431 UFSD("ENTER, mtype=%u\n", mtype);
432 usb1 = ubh_get_usb_first(uspi);
433 usb2 = ubh_get_usb_second(uspi);
434 usb3 = ubh_get_usb_third(uspi);
436 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
437 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
438 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
439 /*we have statistic in different place, then usual*/
440 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
441 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
442 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
443 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
445 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
446 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
447 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
448 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
454 * Read on-disk structures associated with cylinder groups
456 static int ufs_read_cylinder_structures(struct super_block *sb)
458 struct ufs_sb_info *sbi = UFS_SB(sb);
459 struct ufs_sb_private_info *uspi = sbi->s_uspi;
460 struct ufs_buffer_head * ubh;
461 unsigned char * base, * space;
462 unsigned size, blks, i;
463 struct ufs_super_block_third *usb3;
467 usb3 = ubh_get_usb_third(uspi);
469 * Read cs structures from (usually) first data block
472 size = uspi->s_cssize;
473 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
474 base = space = kmalloc(size, GFP_KERNEL);
477 sbi->s_csp = (struct ufs_csum *)space;
478 for (i = 0; i < blks; i += uspi->s_fpb) {
479 size = uspi->s_bsize;
480 if (i + uspi->s_fpb > blks)
481 size = (blks - i) * uspi->s_fsize;
483 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
488 ubh_ubhcpymem (space, ubh, size);
496 * Read cylinder group (we read only first fragment from block
497 * at this time) and prepare internal data structures for cg caching.
499 if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL)))
501 for (i = 0; i < uspi->s_ncg; i++)
502 sbi->s_ucg[i] = NULL;
503 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
504 sbi->s_ucpi[i] = NULL;
505 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
507 for (i = 0; i < uspi->s_ncg; i++) {
508 UFSD("read cg %u\n", i);
509 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
511 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
514 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
516 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
517 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL)))
519 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
521 sbi->s_cg_loaded = 0;
528 for (i = 0; i < uspi->s_ncg; i++)
530 brelse (sbi->s_ucg[i]);
532 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
533 kfree (sbi->s_ucpi[i]);
535 UFSD("EXIT (FAILED)\n");
540 * Sync our internal copy of fs_cstotal with disk
542 static void ufs_put_cstotal(struct super_block *sb)
544 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
545 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
546 struct ufs_super_block_first *usb1;
547 struct ufs_super_block_second *usb2;
548 struct ufs_super_block_third *usb3;
551 usb1 = ubh_get_usb_first(uspi);
552 usb2 = ubh_get_usb_second(uspi);
553 usb3 = ubh_get_usb_third(uspi);
555 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
556 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
557 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
558 /*we have statistic in different place, then usual*/
559 usb2->fs_un.fs_u2.cs_ndir =
560 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
561 usb2->fs_un.fs_u2.cs_nbfree =
562 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
563 usb3->fs_un1.fs_u2.cs_nifree =
564 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
565 usb3->fs_un1.fs_u2.cs_nffree =
566 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
568 usb1->fs_cstotal.cs_ndir =
569 cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
570 usb1->fs_cstotal.cs_nbfree =
571 cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
572 usb1->fs_cstotal.cs_nifree =
573 cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
574 usb1->fs_cstotal.cs_nffree =
575 cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
577 ubh_mark_buffer_dirty(USPI_UBH(uspi));
578 ufs_print_super_stuff(sb, usb1, usb2, usb3);
583 * ufs_put_super_internal() - put on-disk intrenal structures
584 * @sb: pointer to super_block structure
585 * Put on-disk structures associated with cylinder groups
586 * and write them back to disk, also update cs_total on disk
588 static void ufs_put_super_internal(struct super_block *sb)
590 struct ufs_sb_info *sbi = UFS_SB(sb);
591 struct ufs_sb_private_info *uspi = sbi->s_uspi;
592 struct ufs_buffer_head * ubh;
593 unsigned char * base, * space;
594 unsigned blks, size, i;
602 size = uspi->s_cssize;
603 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
604 base = space = (char*) sbi->s_csp;
605 for (i = 0; i < blks; i += uspi->s_fpb) {
606 size = uspi->s_bsize;
607 if (i + uspi->s_fpb > blks)
608 size = (blks - i) * uspi->s_fsize;
610 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
612 ubh_memcpyubh (ubh, space, size);
614 ubh_mark_buffer_uptodate (ubh, 1);
615 ubh_mark_buffer_dirty (ubh);
618 for (i = 0; i < sbi->s_cg_loaded; i++) {
619 ufs_put_cylinder (sb, i);
620 kfree (sbi->s_ucpi[i]);
622 for (; i < UFS_MAX_GROUP_LOADED; i++)
623 kfree (sbi->s_ucpi[i]);
624 for (i = 0; i < uspi->s_ncg; i++)
625 brelse (sbi->s_ucg[i]);
634 static int ufs_fill_super(struct super_block *sb, void *data, int silent)
636 struct ufs_sb_info * sbi;
637 struct ufs_sb_private_info * uspi;
638 struct ufs_super_block_first * usb1;
639 struct ufs_super_block_second * usb2;
640 struct ufs_super_block_third * usb3;
641 struct ufs_buffer_head * ubh;
643 unsigned block_size, super_block_size;
645 unsigned super_block_offset;
655 sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
660 UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
662 #ifndef CONFIG_UFS_FS_WRITE
663 if (!(sb->s_flags & MS_RDONLY)) {
664 printk("ufs was compiled with read-only support, "
665 "can't be mounted as read-write\n");
670 * Set default mount options
671 * Parse mount options
673 sbi->s_mount_opt = 0;
674 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
675 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
676 printk("wrong mount options\n");
679 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
681 printk("You didn't specify the type of your ufs filesystem\n\n"
682 "mount -t ufs -o ufstype="
683 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
684 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
685 "default is ufstype=old\n");
686 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
689 uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
693 uspi->s_dirblksize = UFS_SECTOR_SIZE;
694 super_block_offset=UFS_SBLOCK;
696 /* Keep 2Gig file limit. Some UFS variants need to override
697 this but as I don't know which I'll let those in the know loosen
699 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
700 case UFS_MOUNT_UFSTYPE_44BSD:
701 UFSD("ufstype=44bsd\n");
702 uspi->s_fsize = block_size = 512;
703 uspi->s_fmask = ~(512 - 1);
705 uspi->s_sbsize = super_block_size = 1536;
707 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
709 case UFS_MOUNT_UFSTYPE_UFS2:
710 UFSD("ufstype=ufs2\n");
711 super_block_offset=SBLOCK_UFS2;
712 uspi->s_fsize = block_size = 512;
713 uspi->s_fmask = ~(512 - 1);
715 uspi->s_sbsize = super_block_size = 1536;
717 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
720 case UFS_MOUNT_UFSTYPE_SUN:
721 UFSD("ufstype=sun\n");
722 uspi->s_fsize = block_size = 1024;
723 uspi->s_fmask = ~(1024 - 1);
725 uspi->s_sbsize = super_block_size = 2048;
727 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
728 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
731 case UFS_MOUNT_UFSTYPE_SUNOS:
732 UFSD(("ufstype=sunos\n"))
733 uspi->s_fsize = block_size = 1024;
734 uspi->s_fmask = ~(1024 - 1);
736 uspi->s_sbsize = 2048;
737 super_block_size = 2048;
739 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
740 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
743 case UFS_MOUNT_UFSTYPE_SUNx86:
744 UFSD("ufstype=sunx86\n");
745 uspi->s_fsize = block_size = 1024;
746 uspi->s_fmask = ~(1024 - 1);
748 uspi->s_sbsize = super_block_size = 2048;
750 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
751 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
754 case UFS_MOUNT_UFSTYPE_OLD:
755 UFSD("ufstype=old\n");
756 uspi->s_fsize = block_size = 1024;
757 uspi->s_fmask = ~(1024 - 1);
759 uspi->s_sbsize = super_block_size = 2048;
761 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
762 if (!(sb->s_flags & MS_RDONLY)) {
764 printk(KERN_INFO "ufstype=old is supported read-only\n");
765 sb->s_flags |= MS_RDONLY;
769 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
770 UFSD("ufstype=nextstep\n");
771 uspi->s_fsize = block_size = 1024;
772 uspi->s_fmask = ~(1024 - 1);
774 uspi->s_sbsize = super_block_size = 2048;
776 uspi->s_dirblksize = 1024;
777 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
778 if (!(sb->s_flags & MS_RDONLY)) {
780 printk(KERN_INFO "ufstype=nextstep is supported read-only\n");
781 sb->s_flags |= MS_RDONLY;
785 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
786 UFSD("ufstype=nextstep-cd\n");
787 uspi->s_fsize = block_size = 2048;
788 uspi->s_fmask = ~(2048 - 1);
790 uspi->s_sbsize = super_block_size = 2048;
792 uspi->s_dirblksize = 1024;
793 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
794 if (!(sb->s_flags & MS_RDONLY)) {
796 printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n");
797 sb->s_flags |= MS_RDONLY;
801 case UFS_MOUNT_UFSTYPE_OPENSTEP:
802 UFSD("ufstype=openstep\n");
803 uspi->s_fsize = block_size = 1024;
804 uspi->s_fmask = ~(1024 - 1);
806 uspi->s_sbsize = super_block_size = 2048;
808 uspi->s_dirblksize = 1024;
809 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
810 if (!(sb->s_flags & MS_RDONLY)) {
812 printk(KERN_INFO "ufstype=openstep is supported read-only\n");
813 sb->s_flags |= MS_RDONLY;
817 case UFS_MOUNT_UFSTYPE_HP:
818 UFSD("ufstype=hp\n");
819 uspi->s_fsize = block_size = 1024;
820 uspi->s_fmask = ~(1024 - 1);
822 uspi->s_sbsize = super_block_size = 2048;
824 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
825 if (!(sb->s_flags & MS_RDONLY)) {
827 printk(KERN_INFO "ufstype=hp is supported read-only\n");
828 sb->s_flags |= MS_RDONLY;
833 printk("unknown ufstype\n");
838 if (!sb_set_blocksize(sb, block_size)) {
839 printk(KERN_ERR "UFS: failed to set blocksize\n");
844 * read ufs super block from device
847 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
852 usb1 = ubh_get_usb_first(uspi);
853 usb2 = ubh_get_usb_second(uspi);
854 usb3 = ubh_get_usb_third(uspi);
856 /* Sort out mod used on SunOS 4.1.3 for fs_state */
857 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
858 if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
859 (uspi->s_postblformat != UFS_42POSTBLFMT)) {
860 flags &= ~UFS_ST_MASK;
865 * Check ufs magic number
867 sbi->s_bytesex = BYTESEX_LE;
868 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
876 sbi->s_bytesex = BYTESEX_BE;
877 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
886 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
887 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
888 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
889 && uspi->s_sbbase < 256) {
890 ubh_brelse_uspi(uspi);
896 printk("ufs_read_super: bad magic number\n");
901 * Check block and fragment sizes
903 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
904 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
905 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
906 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
907 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
909 if (!is_power_of_2(uspi->s_fsize)) {
910 printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",
914 if (uspi->s_fsize < 512) {
915 printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n",
919 if (uspi->s_fsize > 4096) {
920 printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n",
924 if (!is_power_of_2(uspi->s_bsize)) {
925 printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",
929 if (uspi->s_bsize < 4096) {
930 printk(KERN_ERR "ufs_read_super: block size %u is too small\n",
934 if (uspi->s_bsize / uspi->s_fsize > 8) {
935 printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n",
936 uspi->s_bsize / uspi->s_fsize);
939 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
940 ubh_brelse_uspi(uspi);
942 block_size = uspi->s_fsize;
943 super_block_size = uspi->s_sbsize;
944 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
948 sbi->s_flags = flags;/*after that line some functions use s_flags*/
949 ufs_print_super_stuff(sb, usb1, usb2, usb3);
952 * Check, if file system was correctly unmounted.
953 * If not, make it read only.
955 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
956 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
957 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
958 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
959 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
960 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
961 switch(usb1->fs_clean) {
963 UFSD("fs is clean\n");
966 UFSD("fs is stable\n");
969 UFSD("fs is DEC OSF/1\n");
972 printk("ufs_read_super: fs is active\n");
973 sb->s_flags |= MS_RDONLY;
976 printk("ufs_read_super: fs is bad\n");
977 sb->s_flags |= MS_RDONLY;
980 printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean);
981 sb->s_flags |= MS_RDONLY;
985 printk("ufs_read_super: fs needs fsck\n");
986 sb->s_flags |= MS_RDONLY;
990 * Read ufs_super_block into internal data structures
992 sb->s_op = &ufs_super_ops;
993 sb->dq_op = NULL; /***/
994 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
996 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
997 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
998 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
999 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1000 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1001 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1003 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1004 uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1005 uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1007 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1008 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1011 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1012 /* s_bsize already set */
1013 /* s_fsize already set */
1014 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1015 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1016 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1017 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1018 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1019 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1020 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1022 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1023 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1024 /* s_sbsize already set */
1025 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1026 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1027 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1028 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1029 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1030 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1031 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1032 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1034 if (uspi->fs_magic == UFS2_MAGIC)
1035 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1037 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1039 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1040 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1041 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1042 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1043 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1044 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1045 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1046 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1047 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1048 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1049 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1050 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1051 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1052 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1055 * Compute another frequently used values
1057 uspi->s_fpbmask = uspi->s_fpb - 1;
1058 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1059 uspi->s_apbshift = uspi->s_bshift - 3;
1061 uspi->s_apbshift = uspi->s_bshift - 2;
1063 uspi->s_2apbshift = uspi->s_apbshift * 2;
1064 uspi->s_3apbshift = uspi->s_apbshift * 3;
1065 uspi->s_apb = 1 << uspi->s_apbshift;
1066 uspi->s_2apb = 1 << uspi->s_2apbshift;
1067 uspi->s_3apb = 1 << uspi->s_3apbshift;
1068 uspi->s_apbmask = uspi->s_apb - 1;
1069 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1070 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1071 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1072 uspi->s_bpf = uspi->s_fsize << 3;
1073 uspi->s_bpfshift = uspi->s_fshift + 3;
1074 uspi->s_bpfmask = uspi->s_bpf - 1;
1075 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1076 (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1077 uspi->s_maxsymlinklen =
1078 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1080 if (uspi->fs_magic == UFS2_MAGIC)
1081 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1083 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1084 if (uspi->s_maxsymlinklen > maxsymlen) {
1085 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1086 "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1087 uspi->s_maxsymlinklen = maxsymlen;
1090 inode = ufs_iget(sb, UFS_ROOTINO);
1091 if (IS_ERR(inode)) {
1092 ret = PTR_ERR(inode);
1095 sb->s_root = d_alloc_root(inode);
1101 ufs_setup_cstotal(sb);
1103 * Read cylinder group structures
1105 if (!(sb->s_flags & MS_RDONLY))
1106 if (!ufs_read_cylinder_structures(sb))
1116 ubh_brelse_uspi (uspi);
1119 sb->s_fs_info = NULL;
1120 UFSD("EXIT (FAILED)\n");
1124 UFSD("EXIT (NOMEM)\n");
1128 static void ufs_write_super(struct super_block *sb)
1130 struct ufs_sb_private_info * uspi;
1131 struct ufs_super_block_first * usb1;
1132 struct ufs_super_block_third * usb3;
1138 flags = UFS_SB(sb)->s_flags;
1139 uspi = UFS_SB(sb)->s_uspi;
1140 usb1 = ubh_get_usb_first(uspi);
1141 usb3 = ubh_get_usb_third(uspi);
1143 if (!(sb->s_flags & MS_RDONLY)) {
1144 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1145 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1146 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1147 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1148 ufs_set_fs_state(sb, usb1, usb3,
1149 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1150 ufs_put_cstotal(sb);
1158 static void ufs_put_super(struct super_block *sb)
1160 struct ufs_sb_info * sbi = UFS_SB(sb);
1165 ufs_write_super(sb);
1167 if (!(sb->s_flags & MS_RDONLY))
1168 ufs_put_super_internal(sb);
1170 ubh_brelse_uspi (sbi->s_uspi);
1171 kfree (sbi->s_uspi);
1173 sb->s_fs_info = NULL;
1179 static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1181 struct ufs_sb_private_info * uspi;
1182 struct ufs_super_block_first * usb1;
1183 struct ufs_super_block_third * usb3;
1184 unsigned new_mount_opt, ufstype;
1189 uspi = UFS_SB(sb)->s_uspi;
1190 flags = UFS_SB(sb)->s_flags;
1191 usb1 = ubh_get_usb_first(uspi);
1192 usb3 = ubh_get_usb_third(uspi);
1195 * Allow the "check" option to be passed as a remount option.
1196 * It is not possible to change ufstype option during remount
1198 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1200 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1201 if (!ufs_parse_options (data, &new_mount_opt)) {
1206 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1207 new_mount_opt |= ufstype;
1208 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1209 printk("ufstype can't be changed during remount\n");
1215 if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1216 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1223 * fs was mouted as rw, remounting ro
1225 if (*mount_flags & MS_RDONLY) {
1226 ufs_put_super_internal(sb);
1227 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1228 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1229 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1230 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1231 ufs_set_fs_state(sb, usb1, usb3,
1232 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1233 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1235 sb->s_flags |= MS_RDONLY;
1238 * fs was mounted as ro, remounting rw
1240 #ifndef CONFIG_UFS_FS_WRITE
1241 printk("ufs was compiled with read-only support, "
1242 "can't be mounted as read-write\n");
1247 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1248 ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1249 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1250 ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1251 ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1252 printk("this ufstype is read-only supported\n");
1257 if (!ufs_read_cylinder_structures(sb)) {
1258 printk("failed during remounting\n");
1263 sb->s_flags &= ~MS_RDONLY;
1266 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1272 static int ufs_show_options(struct seq_file *seq, struct vfsmount *vfs)
1274 struct ufs_sb_info *sbi = UFS_SB(vfs->mnt_sb);
1275 unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1276 const struct match_token *tp = tokens;
1278 while (tp->token != Opt_onerror_panic && tp->token != mval)
1280 BUG_ON(tp->token == Opt_onerror_panic);
1281 seq_printf(seq, ",%s", tp->pattern);
1283 mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1284 while (tp->token != Opt_err && tp->token != mval)
1286 BUG_ON(tp->token == Opt_err);
1287 seq_printf(seq, ",%s", tp->pattern);
1292 static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1294 struct super_block *sb = dentry->d_sb;
1295 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1296 unsigned flags = UFS_SB(sb)->s_flags;
1297 struct ufs_super_block_first *usb1;
1298 struct ufs_super_block_second *usb2;
1299 struct ufs_super_block_third *usb3;
1300 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1304 usb1 = ubh_get_usb_first(uspi);
1305 usb2 = ubh_get_usb_second(uspi);
1306 usb3 = ubh_get_usb_third(uspi);
1308 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1309 buf->f_type = UFS2_MAGIC;
1310 buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1312 buf->f_type = UFS_MAGIC;
1313 buf->f_blocks = uspi->s_dsize;
1315 buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1316 uspi->cs_total.cs_nffree;
1317 buf->f_ffree = uspi->cs_total.cs_nifree;
1318 buf->f_bsize = sb->s_blocksize;
1319 buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1320 ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1321 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1322 buf->f_namelen = UFS_MAXNAMLEN;
1323 buf->f_fsid.val[0] = (u32)id;
1324 buf->f_fsid.val[1] = (u32)(id >> 32);
1331 static struct kmem_cache * ufs_inode_cachep;
1333 static struct inode *ufs_alloc_inode(struct super_block *sb)
1335 struct ufs_inode_info *ei;
1336 ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_KERNEL);
1339 ei->vfs_inode.i_version = 1;
1340 return &ei->vfs_inode;
1343 static void ufs_destroy_inode(struct inode *inode)
1345 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1348 static void init_once(void *foo)
1350 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1352 inode_init_once(&ei->vfs_inode);
1355 static int init_inodecache(void)
1357 ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1358 sizeof(struct ufs_inode_info),
1359 0, (SLAB_RECLAIM_ACCOUNT|
1362 if (ufs_inode_cachep == NULL)
1367 static void destroy_inodecache(void)
1369 kmem_cache_destroy(ufs_inode_cachep);
1373 static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
1374 static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
1377 static const struct super_operations ufs_super_ops = {
1378 .alloc_inode = ufs_alloc_inode,
1379 .destroy_inode = ufs_destroy_inode,
1380 .write_inode = ufs_write_inode,
1381 .delete_inode = ufs_delete_inode,
1382 .put_super = ufs_put_super,
1383 .write_super = ufs_write_super,
1384 .statfs = ufs_statfs,
1385 .remount_fs = ufs_remount,
1386 .show_options = ufs_show_options,
1388 .quota_read = ufs_quota_read,
1389 .quota_write = ufs_quota_write,
1395 /* Read data from quotafile - avoid pagecache and such because we cannot afford
1396 * acquiring the locks... As quota files are never truncated and quota code
1397 * itself serializes the operations (and noone else should touch the files)
1398 * we don't have to be afraid of races */
1399 static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data,
1400 size_t len, loff_t off)
1402 struct inode *inode = sb_dqopt(sb)->files[type];
1403 sector_t blk = off >> sb->s_blocksize_bits;
1405 int offset = off & (sb->s_blocksize - 1);
1408 struct buffer_head *bh;
1409 loff_t i_size = i_size_read(inode);
1413 if (off+len > i_size)
1416 while (toread > 0) {
1417 tocopy = sb->s_blocksize - offset < toread ?
1418 sb->s_blocksize - offset : toread;
1420 bh = ufs_bread(inode, blk, 0, &err);
1423 if (!bh) /* A hole? */
1424 memset(data, 0, tocopy);
1426 memcpy(data, bh->b_data+offset, tocopy);
1437 /* Write to quotafile */
1438 static ssize_t ufs_quota_write(struct super_block *sb, int type,
1439 const char *data, size_t len, loff_t off)
1441 struct inode *inode = sb_dqopt(sb)->files[type];
1442 sector_t blk = off >> sb->s_blocksize_bits;
1444 int offset = off & (sb->s_blocksize - 1);
1446 size_t towrite = len;
1447 struct buffer_head *bh;
1449 mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
1450 while (towrite > 0) {
1451 tocopy = sb->s_blocksize - offset < towrite ?
1452 sb->s_blocksize - offset : towrite;
1454 bh = ufs_bread(inode, blk, 1, &err);
1458 memcpy(bh->b_data+offset, data, tocopy);
1459 flush_dcache_page(bh->b_page);
1460 set_buffer_uptodate(bh);
1461 mark_buffer_dirty(bh);
1470 if (len == towrite) {
1471 mutex_unlock(&inode->i_mutex);
1474 if (inode->i_size < off+len-towrite)
1475 i_size_write(inode, off+len-towrite);
1477 inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
1478 mark_inode_dirty(inode);
1479 mutex_unlock(&inode->i_mutex);
1480 return len - towrite;
1485 static int ufs_get_sb(struct file_system_type *fs_type,
1486 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
1488 return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt);
1491 static struct file_system_type ufs_fs_type = {
1492 .owner = THIS_MODULE,
1494 .get_sb = ufs_get_sb,
1495 .kill_sb = kill_block_super,
1496 .fs_flags = FS_REQUIRES_DEV,
1499 static int __init init_ufs_fs(void)
1501 int err = init_inodecache();
1504 err = register_filesystem(&ufs_fs_type);
1509 destroy_inodecache();
1514 static void __exit exit_ufs_fs(void)
1516 unregister_filesystem(&ufs_fs_type);
1517 destroy_inodecache();
1520 module_init(init_ufs_fs)
1521 module_exit(exit_ufs_fs)
1522 MODULE_LICENSE("GPL");