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[SCSI] qla2xxx: Correctly set the firmware NOS/OLS timeout during initialization.
[linux-2.6/verdex.git] / fs / ufs / super.c
blob74ef5e9bedffaf764c5e51a5492c803a0ff15f31
1 /*
2 * linux/fs/ufs/super.c
3 *
4 * Copyright (C) 1998
5 * Daniel Pirkl <daniel.pirkl@email.cz>
6 * Charles University, Faculty of Mathematics and Physics
7 */
8
9 /* Derived from
10 *
11 * linux/fs/ext2/super.c
12 *
13 * Copyright (C) 1992, 1993, 1994, 1995
14 * Remy Card (card@masi.ibp.fr)
15 * Laboratoire MASI - Institut Blaise Pascal
16 * Universite Pierre et Marie Curie (Paris VI)
17 *
18 * from
19 *
20 * linux/fs/minix/inode.c
21 *
22 * Copyright (C) 1991, 1992 Linus Torvalds
23 *
24 * Big-endian to little-endian byte-swapping/bitmaps by
25 * David S. Miller (davem@caip.rutgers.edu), 1995
26 */
27
28 /*
29 * Inspired by
30 *
31 * linux/fs/ufs/super.c
32 *
33 * Copyright (C) 1996
34 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
35 * Laboratory for Computer Science Research Computing Facility
36 * Rutgers, The State University of New Jersey
37 *
38 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
39 *
40 * Kernel module support added on 96/04/26 by
41 * Stefan Reinauer <stepan@home.culture.mipt.ru>
42 *
43 * Module usage counts added on 96/04/29 by
44 * Gertjan van Wingerde <gertjan@cs.vu.nl>
45 *
46 * Clean swab support on 19970406 by
47 * Francois-Rene Rideau <fare@tunes.org>
48 *
49 * 4.4BSD (FreeBSD) support added on February 1st 1998 by
50 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
51 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
52 *
53 * NeXTstep support added on February 5th 1998 by
54 * Niels Kristian Bech Jensen <nkbj@image.dk>.
55 *
56 * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
57 *
58 * HP/UX hfs filesystem support added by
59 * Martin K. Petersen <mkp@mkp.net>, August 1999
60 *
61 * UFS2 (of FreeBSD 5.x) support added by
62 * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
63 *
64 */
65
66
67 #include <linux/config.h>
68 #include <linux/module.h>
69 #include <linux/bitops.h>
70
71 #include <stdarg.h>
72
73 #include <asm/uaccess.h>
74 #include <asm/system.h>
75
76 #include <linux/errno.h>
77 #include <linux/fs.h>
78 #include <linux/ufs_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/init.h>
85 #include <linux/parser.h>
86 #include <linux/smp_lock.h>
87 #include <linux/buffer_head.h>
88 #include <linux/vfs.h>
89
90 #include "swab.h"
91 #include "util.h"
92
93 #ifdef CONFIG_UFS_DEBUG
94 /*
95 * Print contents of ufs_super_block, useful for debugging
96 */
97 static void ufs_print_super_stuff(struct super_block *sb, unsigned flags,
98 struct ufs_super_block_first *usb1,
99 struct ufs_super_block_second *usb2,
100 struct ufs_super_block_third *usb3)
101 {
102 printk("ufs_print_super_stuff\n");
103 printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb3->fs_magic));
104 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
105 printk(" fs_size: %llu\n", (unsigned long long)
106 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
107 printk(" fs_dsize: %llu\n", (unsigned long long)
108 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
109 printk(" bsize: %u\n",
110 fs32_to_cpu(sb, usb1->fs_bsize));
111 printk(" fsize: %u\n",
112 fs32_to_cpu(sb, usb1->fs_fsize));
113 printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
114 printk(" fs_sblockloc: %llu\n", (unsigned long long)
115 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
116 printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
117 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
118 printk(" cs_nbfree(No of free blocks): %llu\n",
119 (unsigned long long)
120 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
121 } else {
122 printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
123 printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
124 printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
125 printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
126 printk(" cgoffset: %u\n",
127 fs32_to_cpu(sb, usb1->fs_cgoffset));
128 printk(" ~cgmask: 0x%x\n",
129 ~fs32_to_cpu(sb, usb1->fs_cgmask));
130 printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
131 printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
132 printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
133 printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
134 printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
135 printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
136 printk(" fragshift: %u\n",
137 fs32_to_cpu(sb, usb1->fs_fragshift));
138 printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
139 printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
140 printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
141 printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
142 printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
143 printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
144 printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
145 printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
146 printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
147 printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
148 printk(" fstodb: %u\n",
149 fs32_to_cpu(sb, usb1->fs_fsbtodb));
150 printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
151 printk(" ndir %u\n",
152 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
153 printk(" nifree %u\n",
154 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
155 printk(" nbfree %u\n",
156 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
157 printk(" nffree %u\n",
158 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
159 }
160 printk("\n");
161 }
162
163 /*
164 * Print contents of ufs_cylinder_group, useful for debugging
165 */
166 static void ufs_print_cylinder_stuff(struct super_block *sb,
167 struct ufs_cylinder_group *cg)
168 {
169 printk("\nufs_print_cylinder_stuff\n");
170 printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
171 printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
172 printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
173 printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
174 printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
175 printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
176 printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
177 printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
178 printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
179 printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
180 printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
181 printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
182 printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
183 printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
184 printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
185 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
186 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
187 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
188 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
189 printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
190 printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
191 printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
192 printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
193 printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
194 printk(" clustersumoff %u\n",
195 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
196 printk(" clusteroff %u\n",
197 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
198 printk(" nclusterblks %u\n",
199 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
200 printk("\n");
201 }
202 #else
203 # define ufs_print_super_stuff(sb, flags, usb1, usb2, usb3) /**/
204 # define ufs_print_cylinder_stuff(sb, cg) /**/
205 #endif /* CONFIG_UFS_DEBUG */
206
207 static struct super_operations ufs_super_ops;
208
209 static char error_buf[1024];
210
211 void ufs_error (struct super_block * sb, const char * function,
212 const char * fmt, ...)
213 {
214 struct ufs_sb_private_info * uspi;
215 struct ufs_super_block_first * usb1;
216 va_list args;
217
218 uspi = UFS_SB(sb)->s_uspi;
219 usb1 = ubh_get_usb_first(uspi);
220
221 if (!(sb->s_flags & MS_RDONLY)) {
222 usb1->fs_clean = UFS_FSBAD;
223 ubh_mark_buffer_dirty(USPI_UBH(uspi));
224 sb->s_dirt = 1;
225 sb->s_flags |= MS_RDONLY;
226 }
227 va_start (args, fmt);
228 vsprintf (error_buf, fmt, args);
229 va_end (args);
230 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
231 case UFS_MOUNT_ONERROR_PANIC:
232 panic ("UFS-fs panic (device %s): %s: %s\n",
233 sb->s_id, function, error_buf);
234
235 case UFS_MOUNT_ONERROR_LOCK:
236 case UFS_MOUNT_ONERROR_UMOUNT:
237 case UFS_MOUNT_ONERROR_REPAIR:
238 printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n",
239 sb->s_id, function, error_buf);
240 }
241 }
242
243 void ufs_panic (struct super_block * sb, const char * function,
244 const char * fmt, ...)
245 {
246 struct ufs_sb_private_info * uspi;
247 struct ufs_super_block_first * usb1;
248 va_list args;
249
250 uspi = UFS_SB(sb)->s_uspi;
251 usb1 = ubh_get_usb_first(uspi);
252
253 if (!(sb->s_flags & MS_RDONLY)) {
254 usb1->fs_clean = UFS_FSBAD;
255 ubh_mark_buffer_dirty(USPI_UBH(uspi));
256 sb->s_dirt = 1;
257 }
258 va_start (args, fmt);
259 vsprintf (error_buf, fmt, args);
260 va_end (args);
261 sb->s_flags |= MS_RDONLY;
262 printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n",
263 sb->s_id, function, error_buf);
264 }
265
266 void ufs_warning (struct super_block * sb, const char * function,
267 const char * fmt, ...)
268 {
269 va_list args;
270
271 va_start (args, fmt);
272 vsprintf (error_buf, fmt, args);
273 va_end (args);
274 printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n",
275 sb->s_id, function, error_buf);
276 }
277
278 enum {
279 Opt_type_old, Opt_type_sunx86, Opt_type_sun, Opt_type_44bsd,
280 Opt_type_ufs2, Opt_type_hp, Opt_type_nextstepcd, Opt_type_nextstep,
281 Opt_type_openstep, Opt_onerror_panic, Opt_onerror_lock,
282 Opt_onerror_umount, Opt_onerror_repair, Opt_err
283 };
284
285 static match_table_t tokens = {
286 {Opt_type_old, "ufstype=old"},
287 {Opt_type_sunx86, "ufstype=sunx86"},
288 {Opt_type_sun, "ufstype=sun"},
289 {Opt_type_44bsd, "ufstype=44bsd"},
290 {Opt_type_ufs2, "ufstype=ufs2"},
291 {Opt_type_ufs2, "ufstype=5xbsd"},
292 {Opt_type_hp, "ufstype=hp"},
293 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
294 {Opt_type_nextstep, "ufstype=nextstep"},
295 {Opt_type_openstep, "ufstype=openstep"},
296 {Opt_onerror_panic, "onerror=panic"},
297 {Opt_onerror_lock, "onerror=lock"},
298 {Opt_onerror_umount, "onerror=umount"},
299 {Opt_onerror_repair, "onerror=repair"},
300 {Opt_err, NULL}
301 };
302
303 static int ufs_parse_options (char * options, unsigned * mount_options)
304 {
305 char * p;
306
307 UFSD("ENTER\n");
308
309 if (!options)
310 return 1;
311
312 while ((p = strsep(&options, ",")) != NULL) {
313 substring_t args[MAX_OPT_ARGS];
314 int token;
315 if (!*p)
316 continue;
317
318 token = match_token(p, tokens, args);
319 switch (token) {
320 case Opt_type_old:
321 ufs_clear_opt (*mount_options, UFSTYPE);
322 ufs_set_opt (*mount_options, UFSTYPE_OLD);
323 break;
324 case Opt_type_sunx86:
325 ufs_clear_opt (*mount_options, UFSTYPE);
326 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
327 break;
328 case Opt_type_sun:
329 ufs_clear_opt (*mount_options, UFSTYPE);
330 ufs_set_opt (*mount_options, UFSTYPE_SUN);
331 break;
332 case Opt_type_44bsd:
333 ufs_clear_opt (*mount_options, UFSTYPE);
334 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
335 break;
336 case Opt_type_ufs2:
337 ufs_clear_opt(*mount_options, UFSTYPE);
338 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
339 break;
340 case Opt_type_hp:
341 ufs_clear_opt (*mount_options, UFSTYPE);
342 ufs_set_opt (*mount_options, UFSTYPE_HP);
343 break;
344 case Opt_type_nextstepcd:
345 ufs_clear_opt (*mount_options, UFSTYPE);
346 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
347 break;
348 case Opt_type_nextstep:
349 ufs_clear_opt (*mount_options, UFSTYPE);
350 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
351 break;
352 case Opt_type_openstep:
353 ufs_clear_opt (*mount_options, UFSTYPE);
354 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
355 break;
356 case Opt_onerror_panic:
357 ufs_clear_opt (*mount_options, ONERROR);
358 ufs_set_opt (*mount_options, ONERROR_PANIC);
359 break;
360 case Opt_onerror_lock:
361 ufs_clear_opt (*mount_options, ONERROR);
362 ufs_set_opt (*mount_options, ONERROR_LOCK);
363 break;
364 case Opt_onerror_umount:
365 ufs_clear_opt (*mount_options, ONERROR);
366 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
367 break;
368 case Opt_onerror_repair:
369 printk("UFS-fs: Unable to do repair on error, "
370 "will lock lock instead\n");
371 ufs_clear_opt (*mount_options, ONERROR);
372 ufs_set_opt (*mount_options, ONERROR_REPAIR);
373 break;
374 default:
375 printk("UFS-fs: Invalid option: \"%s\" "
376 "or missing value\n", p);
377 return 0;
378 }
379 }
380 return 1;
381 }
382
383 /*
384 * Diffrent types of UFS hold fs_cstotal in different
385 * places, and use diffrent data structure for it.
386 * To make things simplier we just copy fs_cstotal to ufs_sb_private_info
387 */
388 static void ufs_setup_cstotal(struct super_block *sb)
389 {
390 struct ufs_sb_info *sbi = UFS_SB(sb);
391 struct ufs_sb_private_info *uspi = sbi->s_uspi;
392 struct ufs_super_block_first *usb1;
393 struct ufs_super_block_second *usb2;
394 struct ufs_super_block_third *usb3;
395 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
396
397 UFSD("ENTER, mtype=%u\n", mtype);
398 usb1 = ubh_get_usb_first(uspi);
399 usb2 = ubh_get_usb_second(uspi);
400 usb3 = ubh_get_usb_third(uspi);
401
402 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
403 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
404 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
405 /*we have statistic in different place, then usual*/
406 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
407 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
408 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
409 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
410 } else {
411 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
412 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
413 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
414 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
415 }
416 UFSD("EXIT\n");
417 }
418
419 /*
420 * Read on-disk structures associated with cylinder groups
421 */
422 static int ufs_read_cylinder_structures(struct super_block *sb)
423 {
424 struct ufs_sb_info *sbi = UFS_SB(sb);
425 struct ufs_sb_private_info *uspi = sbi->s_uspi;
426 unsigned flags = sbi->s_flags;
427 struct ufs_buffer_head * ubh;
428 unsigned char * base, * space;
429 unsigned size, blks, i;
430 struct ufs_super_block_third *usb3;
431
432 UFSD("ENTER\n");
433
434 usb3 = ubh_get_usb_third(uspi);
435 /*
436 * Read cs structures from (usually) first data block
437 * on the device.
438 */
439 size = uspi->s_cssize;
440 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
441 base = space = kmalloc(size, GFP_KERNEL);
442 if (!base)
443 goto failed;
444 sbi->s_csp = (struct ufs_csum *)space;
445 for (i = 0; i < blks; i += uspi->s_fpb) {
446 size = uspi->s_bsize;
447 if (i + uspi->s_fpb > blks)
448 size = (blks - i) * uspi->s_fsize;
449
450 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
451 ubh = ubh_bread(sb,
452 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr) + i, size);
453 else
454 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
455
456 if (!ubh)
457 goto failed;
458
459 ubh_ubhcpymem (space, ubh, size);
460
461 space += size;
462 ubh_brelse (ubh);
463 ubh = NULL;
464 }
465
466 /*
467 * Read cylinder group (we read only first fragment from block
468 * at this time) and prepare internal data structures for cg caching.
469 */
470 if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL)))
471 goto failed;
472 for (i = 0; i < uspi->s_ncg; i++)
473 sbi->s_ucg[i] = NULL;
474 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
475 sbi->s_ucpi[i] = NULL;
476 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
477 }
478 for (i = 0; i < uspi->s_ncg; i++) {
479 UFSD("read cg %u\n", i);
480 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
481 goto failed;
482 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
483 goto failed;
484
485 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
486 }
487 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
488 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL)))
489 goto failed;
490 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
491 }
492 sbi->s_cg_loaded = 0;
493 UFSD("EXIT\n");
494 return 1;
495
496 failed:
497 kfree (base);
498 if (sbi->s_ucg) {
499 for (i = 0; i < uspi->s_ncg; i++)
500 if (sbi->s_ucg[i])
501 brelse (sbi->s_ucg[i]);
502 kfree (sbi->s_ucg);
503 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
504 kfree (sbi->s_ucpi[i]);
505 }
506 UFSD("EXIT (FAILED)\n");
507 return 0;
508 }
509
510 /*
511 * Sync our internal copy of fs_cstotal with disk
512 */
513 static void ufs_put_cstotal(struct super_block *sb)
514 {
515 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
516 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
517 struct ufs_super_block_first *usb1;
518 struct ufs_super_block_second *usb2;
519 struct ufs_super_block_third *usb3;
520
521 UFSD("ENTER\n");
522 usb1 = ubh_get_usb_first(uspi);
523 usb2 = ubh_get_usb_second(uspi);
524 usb3 = ubh_get_usb_third(uspi);
525
526 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
527 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
528 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
529 /*we have statistic in different place, then usual*/
530 usb2->fs_un.fs_u2.cs_ndir =
531 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
532 usb2->fs_un.fs_u2.cs_nbfree =
533 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
534 usb3->fs_un1.fs_u2.cs_nifree =
535 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
536 usb3->fs_un1.fs_u2.cs_nffree =
537 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
538 } else {
539 usb1->fs_cstotal.cs_ndir =
540 cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
541 usb1->fs_cstotal.cs_nbfree =
542 cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
543 usb1->fs_cstotal.cs_nifree =
544 cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
545 usb1->fs_cstotal.cs_nffree =
546 cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
547 }
548 ubh_mark_buffer_dirty(USPI_UBH(uspi));
549 UFSD("EXIT\n");
550 }
551
552 /**
553 * ufs_put_super_internal() - put on-disk intrenal structures
554 * @sb: pointer to super_block structure
555 * Put on-disk structures associated with cylinder groups
556 * and write them back to disk, also update cs_total on disk
557 */
558 static void ufs_put_super_internal(struct super_block *sb)
559 {
560 struct ufs_sb_info *sbi = UFS_SB(sb);
561 struct ufs_sb_private_info *uspi = sbi->s_uspi;
562 struct ufs_buffer_head * ubh;
563 unsigned char * base, * space;
564 unsigned blks, size, i;
565
566
567 UFSD("ENTER\n");
568 ufs_put_cstotal(sb);
569 size = uspi->s_cssize;
570 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
571 base = space = (char*) sbi->s_csp;
572 for (i = 0; i < blks; i += uspi->s_fpb) {
573 size = uspi->s_bsize;
574 if (i + uspi->s_fpb > blks)
575 size = (blks - i) * uspi->s_fsize;
576 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
577 ubh_memcpyubh (ubh, space, size);
578 space += size;
579 ubh_mark_buffer_uptodate (ubh, 1);
580 ubh_mark_buffer_dirty (ubh);
581 ubh_brelse (ubh);
582 }
583 for (i = 0; i < sbi->s_cg_loaded; i++) {
584 ufs_put_cylinder (sb, i);
585 kfree (sbi->s_ucpi[i]);
586 }
587 for (; i < UFS_MAX_GROUP_LOADED; i++)
588 kfree (sbi->s_ucpi[i]);
589 for (i = 0; i < uspi->s_ncg; i++)
590 brelse (sbi->s_ucg[i]);
591 kfree (sbi->s_ucg);
592 kfree (base);
593 UFSD("EXIT\n");
594 }
595
596 static int ufs_fill_super(struct super_block *sb, void *data, int silent)
597 {
598 struct ufs_sb_info * sbi;
599 struct ufs_sb_private_info * uspi;
600 struct ufs_super_block_first * usb1;
601 struct ufs_super_block_second * usb2;
602 struct ufs_super_block_third * usb3;
603 struct ufs_buffer_head * ubh;
604 struct inode *inode;
605 unsigned block_size, super_block_size;
606 unsigned flags;
607 unsigned super_block_offset;
608
609 uspi = NULL;
610 ubh = NULL;
611 flags = 0;
612
613 UFSD("ENTER\n");
614
615 sbi = kmalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
616 if (!sbi)
617 goto failed_nomem;
618 sb->s_fs_info = sbi;
619 memset(sbi, 0, sizeof(struct ufs_sb_info));
620
621 UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
622
623 #ifndef CONFIG_UFS_FS_WRITE
624 if (!(sb->s_flags & MS_RDONLY)) {
625 printk("ufs was compiled with read-only support, "
626 "can't be mounted as read-write\n");
627 goto failed;
628 }
629 #endif
630 /*
631 * Set default mount options
632 * Parse mount options
633 */
634 sbi->s_mount_opt = 0;
635 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
636 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
637 printk("wrong mount options\n");
638 goto failed;
639 }
640 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
641 if (!silent)
642 printk("You didn't specify the type of your ufs filesystem\n\n"
643 "mount -t ufs -o ufstype="
644 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
645 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
646 "default is ufstype=old\n");
647 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
648 }
649
650 sbi->s_uspi = uspi =
651 kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL);
652 if (!uspi)
653 goto failed;
654
655 super_block_offset=UFS_SBLOCK;
656
657 /* Keep 2Gig file limit. Some UFS variants need to override
658 this but as I don't know which I'll let those in the know loosen
659 the rules */
660 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
661 case UFS_MOUNT_UFSTYPE_44BSD:
662 UFSD("ufstype=44bsd\n");
663 uspi->s_fsize = block_size = 512;
664 uspi->s_fmask = ~(512 - 1);
665 uspi->s_fshift = 9;
666 uspi->s_sbsize = super_block_size = 1536;
667 uspi->s_sbbase = 0;
668 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
669 break;
670 case UFS_MOUNT_UFSTYPE_UFS2:
671 UFSD("ufstype=ufs2\n");
672 super_block_offset=SBLOCK_UFS2;
673 uspi->s_fsize = block_size = 512;
674 uspi->s_fmask = ~(512 - 1);
675 uspi->s_fshift = 9;
676 uspi->s_sbsize = super_block_size = 1536;
677 uspi->s_sbbase = 0;
678 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
679 if (!(sb->s_flags & MS_RDONLY)) {
680 printk(KERN_INFO "ufstype=ufs2 is supported read-only\n");
681 sb->s_flags |= MS_RDONLY;
682 }
683 break;
684
685 case UFS_MOUNT_UFSTYPE_SUN:
686 UFSD("ufstype=sun\n");
687 uspi->s_fsize = block_size = 1024;
688 uspi->s_fmask = ~(1024 - 1);
689 uspi->s_fshift = 10;
690 uspi->s_sbsize = super_block_size = 2048;
691 uspi->s_sbbase = 0;
692 uspi->s_maxsymlinklen = 56;
693 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
694 break;
695
696 case UFS_MOUNT_UFSTYPE_SUNx86:
697 UFSD("ufstype=sunx86\n");
698 uspi->s_fsize = block_size = 1024;
699 uspi->s_fmask = ~(1024 - 1);
700 uspi->s_fshift = 10;
701 uspi->s_sbsize = super_block_size = 2048;
702 uspi->s_sbbase = 0;
703 uspi->s_maxsymlinklen = 56;
704 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
705 break;
706
707 case UFS_MOUNT_UFSTYPE_OLD:
708 UFSD("ufstype=old\n");
709 uspi->s_fsize = block_size = 1024;
710 uspi->s_fmask = ~(1024 - 1);
711 uspi->s_fshift = 10;
712 uspi->s_sbsize = super_block_size = 2048;
713 uspi->s_sbbase = 0;
714 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
715 if (!(sb->s_flags & MS_RDONLY)) {
716 if (!silent)
717 printk(KERN_INFO "ufstype=old is supported read-only\n");
718 sb->s_flags |= MS_RDONLY;
719 }
720 break;
721
722 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
723 UFSD("ufstype=nextstep\n");
724 uspi->s_fsize = block_size = 1024;
725 uspi->s_fmask = ~(1024 - 1);
726 uspi->s_fshift = 10;
727 uspi->s_sbsize = super_block_size = 2048;
728 uspi->s_sbbase = 0;
729 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
730 if (!(sb->s_flags & MS_RDONLY)) {
731 if (!silent)
732 printk(KERN_INFO "ufstype=nextstep is supported read-only\n");
733 sb->s_flags |= MS_RDONLY;
734 }
735 break;
736
737 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
738 UFSD("ufstype=nextstep-cd\n");
739 uspi->s_fsize = block_size = 2048;
740 uspi->s_fmask = ~(2048 - 1);
741 uspi->s_fshift = 11;
742 uspi->s_sbsize = super_block_size = 2048;
743 uspi->s_sbbase = 0;
744 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
745 if (!(sb->s_flags & MS_RDONLY)) {
746 if (!silent)
747 printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n");
748 sb->s_flags |= MS_RDONLY;
749 }
750 break;
751
752 case UFS_MOUNT_UFSTYPE_OPENSTEP:
753 UFSD("ufstype=openstep\n");
754 uspi->s_fsize = block_size = 1024;
755 uspi->s_fmask = ~(1024 - 1);
756 uspi->s_fshift = 10;
757 uspi->s_sbsize = super_block_size = 2048;
758 uspi->s_sbbase = 0;
759 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
760 if (!(sb->s_flags & MS_RDONLY)) {
761 if (!silent)
762 printk(KERN_INFO "ufstype=openstep is supported read-only\n");
763 sb->s_flags |= MS_RDONLY;
764 }
765 break;
766
767 case UFS_MOUNT_UFSTYPE_HP:
768 UFSD("ufstype=hp\n");
769 uspi->s_fsize = block_size = 1024;
770 uspi->s_fmask = ~(1024 - 1);
771 uspi->s_fshift = 10;
772 uspi->s_sbsize = super_block_size = 2048;
773 uspi->s_sbbase = 0;
774 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
775 if (!(sb->s_flags & MS_RDONLY)) {
776 if (!silent)
777 printk(KERN_INFO "ufstype=hp is supported read-only\n");
778 sb->s_flags |= MS_RDONLY;
779 }
780 break;
781 default:
782 if (!silent)
783 printk("unknown ufstype\n");
784 goto failed;
785 }
786
787 again:
788 if (!sb_set_blocksize(sb, block_size)) {
789 printk(KERN_ERR "UFS: failed to set blocksize\n");
790 goto failed;
791 }
792
793 /*
794 * read ufs super block from device
795 */
796
797 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
798
799 if (!ubh)
800 goto failed;
801
802
803 usb1 = ubh_get_usb_first(uspi);
804 usb2 = ubh_get_usb_second(uspi);
805 usb3 = ubh_get_usb_third(uspi);
806
807 /*
808 * Check ufs magic number
809 */
810 sbi->s_bytesex = BYTESEX_LE;
811 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
812 case UFS_MAGIC:
813 case UFS2_MAGIC:
814 case UFS_MAGIC_LFN:
815 case UFS_MAGIC_FEA:
816 case UFS_MAGIC_4GB:
817 goto magic_found;
818 }
819 sbi->s_bytesex = BYTESEX_BE;
820 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
821 case UFS_MAGIC:
822 case UFS2_MAGIC:
823 case UFS_MAGIC_LFN:
824 case UFS_MAGIC_FEA:
825 case UFS_MAGIC_4GB:
826 goto magic_found;
827 }
828
829 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
830 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
831 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
832 && uspi->s_sbbase < 256) {
833 ubh_brelse_uspi(uspi);
834 ubh = NULL;
835 uspi->s_sbbase += 8;
836 goto again;
837 }
838 if (!silent)
839 printk("ufs_read_super: bad magic number\n");
840 goto failed;
841
842 magic_found:
843 /*
844 * Check block and fragment sizes
845 */
846 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
847 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
848 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
849 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
850 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
851
852 if (uspi->s_fsize & (uspi->s_fsize - 1)) {
853 printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",
854 uspi->s_fsize);
855 goto failed;
856 }
857 if (uspi->s_fsize < 512) {
858 printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n",
859 uspi->s_fsize);
860 goto failed;
861 }
862 if (uspi->s_fsize > 4096) {
863 printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n",
864 uspi->s_fsize);
865 goto failed;
866 }
867 if (uspi->s_bsize & (uspi->s_bsize - 1)) {
868 printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",
869 uspi->s_bsize);
870 goto failed;
871 }
872 if (uspi->s_bsize < 4096) {
873 printk(KERN_ERR "ufs_read_super: block size %u is too small\n",
874 uspi->s_bsize);
875 goto failed;
876 }
877 if (uspi->s_bsize / uspi->s_fsize > 8) {
878 printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n",
879 uspi->s_bsize / uspi->s_fsize);
880 goto failed;
881 }
882 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
883 ubh_brelse_uspi(uspi);
884 ubh = NULL;
885 block_size = uspi->s_fsize;
886 super_block_size = uspi->s_sbsize;
887 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
888 goto again;
889 }
890
891
892 ufs_print_super_stuff(sb, flags, usb1, usb2, usb3);
893
894 /*
895 * Check, if file system was correctly unmounted.
896 * If not, make it read only.
897 */
898 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
899 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
900 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
901 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
902 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
903 switch(usb1->fs_clean) {
904 case UFS_FSCLEAN:
905 UFSD("fs is clean\n");
906 break;
907 case UFS_FSSTABLE:
908 UFSD("fs is stable\n");
909 break;
910 case UFS_FSOSF1:
911 UFSD("fs is DEC OSF/1\n");
912 break;
913 case UFS_FSACTIVE:
914 printk("ufs_read_super: fs is active\n");
915 sb->s_flags |= MS_RDONLY;
916 break;
917 case UFS_FSBAD:
918 printk("ufs_read_super: fs is bad\n");
919 sb->s_flags |= MS_RDONLY;
920 break;
921 default:
922 printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean);
923 sb->s_flags |= MS_RDONLY;
924 break;
925 }
926 } else {
927 printk("ufs_read_super: fs needs fsck\n");
928 sb->s_flags |= MS_RDONLY;
929 }
930
931 /*
932 * Read ufs_super_block into internal data structures
933 */
934 sb->s_op = &ufs_super_ops;
935 sb->dq_op = NULL; /***/
936 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
937
938 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
939 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
940 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
941 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
942 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
943 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
944
945 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
946 uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
947 uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
948 } else {
949 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
950 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
951 }
952
953 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
954 /* s_bsize already set */
955 /* s_fsize already set */
956 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
957 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
958 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
959 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
960 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
961 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
962 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
963 uspi->s_fshift);
964 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
965 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
966 /* s_sbsize already set */
967 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
968 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
969 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
970 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
971 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
972 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
973 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
974 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
975 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
976 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
977 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
978 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
979 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
980 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
981 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
982 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
983 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
984 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
985 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
986 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
987 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
988 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
989 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
990 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
991
992 /*
993 * Compute another frequently used values
994 */
995 uspi->s_fpbmask = uspi->s_fpb - 1;
996 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
997 uspi->s_apbshift = uspi->s_bshift - 3;
998 else
999 uspi->s_apbshift = uspi->s_bshift - 2;
1000
1001 uspi->s_2apbshift = uspi->s_apbshift * 2;
1002 uspi->s_3apbshift = uspi->s_apbshift * 3;
1003 uspi->s_apb = 1 << uspi->s_apbshift;
1004 uspi->s_2apb = 1 << uspi->s_2apbshift;
1005 uspi->s_3apb = 1 << uspi->s_3apbshift;
1006 uspi->s_apbmask = uspi->s_apb - 1;
1007 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1008 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1009 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1010 uspi->s_bpf = uspi->s_fsize << 3;
1011 uspi->s_bpfshift = uspi->s_fshift + 3;
1012 uspi->s_bpfmask = uspi->s_bpf - 1;
1013 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) ==
1014 UFS_MOUNT_UFSTYPE_44BSD)
1015 uspi->s_maxsymlinklen =
1016 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1017
1018 sbi->s_flags = flags;
1019
1020 inode = iget(sb, UFS_ROOTINO);
1021 if (!inode || is_bad_inode(inode))
1022 goto failed;
1023 sb->s_root = d_alloc_root(inode);
1024 if (!sb->s_root)
1025 goto dalloc_failed;
1026
1027 ufs_setup_cstotal(sb);
1028 /*
1029 * Read cylinder group structures
1030 */
1031 if (!(sb->s_flags & MS_RDONLY))
1032 if (!ufs_read_cylinder_structures(sb))
1033 goto failed;
1034
1035 UFSD("EXIT\n");
1036 return 0;
1037
1038 dalloc_failed:
1039 iput(inode);
1040 failed:
1041 if (ubh)
1042 ubh_brelse_uspi (uspi);
1043 kfree (uspi);
1044 kfree(sbi);
1045 sb->s_fs_info = NULL;
1046 UFSD("EXIT (FAILED)\n");
1047 return -EINVAL;
1048
1049 failed_nomem:
1050 UFSD("EXIT (NOMEM)\n");
1051 return -ENOMEM;
1052 }
1053
1054 static void ufs_write_super(struct super_block *sb)
1055 {
1056 struct ufs_sb_private_info * uspi;
1057 struct ufs_super_block_first * usb1;
1058 struct ufs_super_block_third * usb3;
1059 unsigned flags;
1060
1061 lock_kernel();
1062
1063 UFSD("ENTER\n");
1064 flags = UFS_SB(sb)->s_flags;
1065 uspi = UFS_SB(sb)->s_uspi;
1066 usb1 = ubh_get_usb_first(uspi);
1067 usb3 = ubh_get_usb_third(uspi);
1068
1069 if (!(sb->s_flags & MS_RDONLY)) {
1070 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1071 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1072 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1073 ufs_set_fs_state(sb, usb1, usb3,
1074 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1075 ufs_put_cstotal(sb);
1076 }
1077 sb->s_dirt = 0;
1078 UFSD("EXIT\n");
1079 unlock_kernel();
1080 }
1081
1082 static void ufs_put_super(struct super_block *sb)
1083 {
1084 struct ufs_sb_info * sbi = UFS_SB(sb);
1085
1086 UFSD("ENTER\n");
1087
1088 if (!(sb->s_flags & MS_RDONLY))
1089 ufs_put_super_internal(sb);
1090
1091 ubh_brelse_uspi (sbi->s_uspi);
1092 kfree (sbi->s_uspi);
1093 kfree (sbi);
1094 sb->s_fs_info = NULL;
1095 UFSD("EXIT\n");
1096 return;
1097 }
1098
1099
1100 static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1101 {
1102 struct ufs_sb_private_info * uspi;
1103 struct ufs_super_block_first * usb1;
1104 struct ufs_super_block_third * usb3;
1105 unsigned new_mount_opt, ufstype;
1106 unsigned flags;
1107
1108 uspi = UFS_SB(sb)->s_uspi;
1109 flags = UFS_SB(sb)->s_flags;
1110 usb1 = ubh_get_usb_first(uspi);
1111 usb3 = ubh_get_usb_third(uspi);
1112
1113 /*
1114 * Allow the "check" option to be passed as a remount option.
1115 * It is not possible to change ufstype option during remount
1116 */
1117 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1118 new_mount_opt = 0;
1119 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1120 if (!ufs_parse_options (data, &new_mount_opt))
1121 return -EINVAL;
1122 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1123 new_mount_opt |= ufstype;
1124 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1125 printk("ufstype can't be changed during remount\n");
1126 return -EINVAL;
1127 }
1128
1129 if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1130 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1131 return 0;
1132 }
1133
1134 /*
1135 * fs was mouted as rw, remounting ro
1136 */
1137 if (*mount_flags & MS_RDONLY) {
1138 ufs_put_super_internal(sb);
1139 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1140 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1141 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1142 ufs_set_fs_state(sb, usb1, usb3,
1143 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1144 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1145 sb->s_dirt = 0;
1146 sb->s_flags |= MS_RDONLY;
1147 } else {
1148 /*
1149 * fs was mounted as ro, remounting rw
1150 */
1151 #ifndef CONFIG_UFS_FS_WRITE
1152 printk("ufs was compiled with read-only support, "
1153 "can't be mounted as read-write\n");
1154 return -EINVAL;
1155 #else
1156 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1157 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1158 ufstype != UFS_MOUNT_UFSTYPE_SUNx86) {
1159 printk("this ufstype is read-only supported\n");
1160 return -EINVAL;
1161 }
1162 if (!ufs_read_cylinder_structures(sb)) {
1163 printk("failed during remounting\n");
1164 return -EPERM;
1165 }
1166 sb->s_flags &= ~MS_RDONLY;
1167 #endif
1168 }
1169 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1170 return 0;
1171 }
1172
1173 static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1174 {
1175 struct super_block *sb = dentry->d_sb;
1176 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1177 unsigned flags = UFS_SB(sb)->s_flags;
1178 struct ufs_super_block_first *usb1;
1179 struct ufs_super_block_second *usb2;
1180 struct ufs_super_block_third *usb3;
1181
1182 lock_kernel();
1183
1184 usb1 = ubh_get_usb_first(uspi);
1185 usb2 = ubh_get_usb_second(uspi);
1186 usb3 = ubh_get_usb_third(uspi);
1187
1188 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1189 buf->f_type = UFS2_MAGIC;
1190 buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1191 } else {
1192 buf->f_type = UFS_MAGIC;
1193 buf->f_blocks = uspi->s_dsize;
1194 }
1195 buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1196 uspi->cs_total.cs_nffree;
1197 buf->f_ffree = uspi->cs_total.cs_nifree;
1198 buf->f_bsize = sb->s_blocksize;
1199 buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1200 ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1201 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1202 buf->f_namelen = UFS_MAXNAMLEN;
1203
1204 unlock_kernel();
1205
1206 return 0;
1207 }
1208
1209 static kmem_cache_t * ufs_inode_cachep;
1210
1211 static struct inode *ufs_alloc_inode(struct super_block *sb)
1212 {
1213 struct ufs_inode_info *ei;
1214 ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, SLAB_KERNEL);
1215 if (!ei)
1216 return NULL;
1217 ei->vfs_inode.i_version = 1;
1218 return &ei->vfs_inode;
1219 }
1220
1221 static void ufs_destroy_inode(struct inode *inode)
1222 {
1223 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1224 }
1225
1226 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
1227 {
1228 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1229
1230 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
1231 SLAB_CTOR_CONSTRUCTOR)
1232 inode_init_once(&ei->vfs_inode);
1233 }
1234
1235 static int init_inodecache(void)
1236 {
1237 ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1238 sizeof(struct ufs_inode_info),
1239 0, (SLAB_RECLAIM_ACCOUNT|
1240 SLAB_MEM_SPREAD),
1241 init_once, NULL);
1242 if (ufs_inode_cachep == NULL)
1243 return -ENOMEM;
1244 return 0;
1245 }
1246
1247 static void destroy_inodecache(void)
1248 {
1249 if (kmem_cache_destroy(ufs_inode_cachep))
1250 printk(KERN_INFO "ufs_inode_cache: not all structures were freed\n");
1251 }
1252
1253 #ifdef CONFIG_QUOTA
1254 static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
1255 static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
1256 #endif
1257
1258 static struct super_operations ufs_super_ops = {
1259 .alloc_inode = ufs_alloc_inode,
1260 .destroy_inode = ufs_destroy_inode,
1261 .read_inode = ufs_read_inode,
1262 .write_inode = ufs_write_inode,
1263 .delete_inode = ufs_delete_inode,
1264 .put_super = ufs_put_super,
1265 .write_super = ufs_write_super,
1266 .statfs = ufs_statfs,
1267 .remount_fs = ufs_remount,
1268 #ifdef CONFIG_QUOTA
1269 .quota_read = ufs_quota_read,
1270 .quota_write = ufs_quota_write,
1271 #endif
1272 };
1273
1274 #ifdef CONFIG_QUOTA
1275
1276 /* Read data from quotafile - avoid pagecache and such because we cannot afford
1277 * acquiring the locks... As quota files are never truncated and quota code
1278 * itself serializes the operations (and noone else should touch the files)
1279 * we don't have to be afraid of races */
1280 static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data,
1281 size_t len, loff_t off)
1282 {
1283 struct inode *inode = sb_dqopt(sb)->files[type];
1284 sector_t blk = off >> sb->s_blocksize_bits;
1285 int err = 0;
1286 int offset = off & (sb->s_blocksize - 1);
1287 int tocopy;
1288 size_t toread;
1289 struct buffer_head *bh;
1290 loff_t i_size = i_size_read(inode);
1291
1292 if (off > i_size)
1293 return 0;
1294 if (off+len > i_size)
1295 len = i_size-off;
1296 toread = len;
1297 while (toread > 0) {
1298 tocopy = sb->s_blocksize - offset < toread ?
1299 sb->s_blocksize - offset : toread;
1300
1301 bh = ufs_bread(inode, blk, 0, &err);
1302 if (err)
1303 return err;
1304 if (!bh) /* A hole? */
1305 memset(data, 0, tocopy);
1306 else {
1307 memcpy(data, bh->b_data+offset, tocopy);
1308 brelse(bh);
1309 }
1310 offset = 0;
1311 toread -= tocopy;
1312 data += tocopy;
1313 blk++;
1314 }
1315 return len;
1316 }
1317
1318 /* Write to quotafile */
1319 static ssize_t ufs_quota_write(struct super_block *sb, int type,
1320 const char *data, size_t len, loff_t off)
1321 {
1322 struct inode *inode = sb_dqopt(sb)->files[type];
1323 sector_t blk = off >> sb->s_blocksize_bits;
1324 int err = 0;
1325 int offset = off & (sb->s_blocksize - 1);
1326 int tocopy;
1327 size_t towrite = len;
1328 struct buffer_head *bh;
1329
1330 mutex_lock(&inode->i_mutex);
1331 while (towrite > 0) {
1332 tocopy = sb->s_blocksize - offset < towrite ?
1333 sb->s_blocksize - offset : towrite;
1334
1335 bh = ufs_bread(inode, blk, 1, &err);
1336 if (!bh)
1337 goto out;
1338 lock_buffer(bh);
1339 memcpy(bh->b_data+offset, data, tocopy);
1340 flush_dcache_page(bh->b_page);
1341 set_buffer_uptodate(bh);
1342 mark_buffer_dirty(bh);
1343 unlock_buffer(bh);
1344 brelse(bh);
1345 offset = 0;
1346 towrite -= tocopy;
1347 data += tocopy;
1348 blk++;
1349 }
1350 out:
1351 if (len == towrite) {
1352 mutex_unlock(&inode->i_mutex);
1353 return err;
1354 }
1355 if (inode->i_size < off+len-towrite)
1356 i_size_write(inode, off+len-towrite);
1357 inode->i_version++;
1358 inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
1359 mark_inode_dirty(inode);
1360 mutex_unlock(&inode->i_mutex);
1361 return len - towrite;
1362 }
1363
1364 #endif
1365
1366 static int ufs_get_sb(struct file_system_type *fs_type,
1367 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
1368 {
1369 return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt);
1370 }
1371
1372 static struct file_system_type ufs_fs_type = {
1373 .owner = THIS_MODULE,
1374 .name = "ufs",
1375 .get_sb = ufs_get_sb,
1376 .kill_sb = kill_block_super,
1377 .fs_flags = FS_REQUIRES_DEV,
1378 };
1379
1380 static int __init init_ufs_fs(void)
1381 {
1382 int err = init_inodecache();
1383 if (err)
1384 goto out1;
1385 err = register_filesystem(&ufs_fs_type);
1386 if (err)
1387 goto out;
1388 return 0;
1389 out:
1390 destroy_inodecache();
1391 out1:
1392 return err;
1393 }
1394
1395 static void __exit exit_ufs_fs(void)
1396 {
1397 unregister_filesystem(&ufs_fs_type);
1398 destroy_inodecache();
1399 }
1400
1401 module_init(init_ufs_fs)
1402 module_exit(exit_ufs_fs)
1403 MODULE_LICENSE("GPL");
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