?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
printf: Remove unused 'bprintf'
[drm/drm-misc.git] / fs / ufs / super.c
blob762699c1bcf684cb6bc90f08e6b03c1e210d0c96
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/fs/ufs/super.c
4 *
5 * Copyright (C) 1998
6 * Daniel Pirkl <daniel.pirkl@email.cz>
7 * Charles University, Faculty of Mathematics and Physics
8 */
9
10 /* Derived from
11 *
12 * linux/fs/ext2/super.c
13 *
14 * Copyright (C) 1992, 1993, 1994, 1995
15 * Remy Card (card@masi.ibp.fr)
16 * Laboratoire MASI - Institut Blaise Pascal
17 * Universite Pierre et Marie Curie (Paris VI)
18 *
19 * from
20 *
21 * linux/fs/minix/inode.c
22 *
23 * Copyright (C) 1991, 1992 Linus Torvalds
24 *
25 * Big-endian to little-endian byte-swapping/bitmaps by
26 * David S. Miller (davem@caip.rutgers.edu), 1995
27 */
28
29 /*
30 * Inspired by
31 *
32 * linux/fs/ufs/super.c
33 *
34 * Copyright (C) 1996
35 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
36 * Laboratory for Computer Science Research Computing Facility
37 * Rutgers, The State University of New Jersey
38 *
39 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
40 *
41 * Kernel module support added on 96/04/26 by
42 * Stefan Reinauer <stepan@home.culture.mipt.ru>
43 *
44 * Module usage counts added on 96/04/29 by
45 * Gertjan van Wingerde <gwingerde@gmail.com>
46 *
47 * Clean swab support on 19970406 by
48 * Francois-Rene Rideau <fare@tunes.org>
49 *
50 * 4.4BSD (FreeBSD) support added on February 1st 1998 by
51 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
52 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
53 *
54 * NeXTstep support added on February 5th 1998 by
55 * Niels Kristian Bech Jensen <nkbj@image.dk>.
56 *
57 * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
58 *
59 * HP/UX hfs filesystem support added by
60 * Martin K. Petersen <mkp@mkp.net>, August 1999
61 *
62 * UFS2 (of FreeBSD 5.x) support added by
63 * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
64 *
65 * UFS2 write support added by
66 * Evgeniy Dushistov <dushistov@mail.ru>, 2007
67 */
68
69 #include <linux/exportfs.h>
70 #include <linux/module.h>
71 #include <linux/bitops.h>
72
73 #include <linux/stdarg.h>
74
75 #include <linux/uaccess.h>
76
77 #include <linux/errno.h>
78 #include <linux/fs.h>
79 #include <linux/slab.h>
80 #include <linux/time.h>
81 #include <linux/stat.h>
82 #include <linux/string.h>
83 #include <linux/blkdev.h>
84 #include <linux/backing-dev.h>
85 #include <linux/init.h>
86 #include <linux/parser.h>
87 #include <linux/buffer_head.h>
88 #include <linux/vfs.h>
89 #include <linux/log2.h>
90 #include <linux/mount.h>
91 #include <linux/seq_file.h>
92 #include <linux/iversion.h>
93
94 #include "ufs_fs.h"
95 #include "ufs.h"
96 #include "swab.h"
97 #include "util.h"
98
99 static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
100 {
101 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
102 struct inode *inode;
103
104 if (ino < UFS_ROOTINO || ino > (u64)uspi->s_ncg * uspi->s_ipg)
105 return ERR_PTR(-ESTALE);
106
107 inode = ufs_iget(sb, ino);
108 if (IS_ERR(inode))
109 return ERR_CAST(inode);
110 if (generation && inode->i_generation != generation) {
111 iput(inode);
112 return ERR_PTR(-ESTALE);
113 }
114 return inode;
115 }
116
117 static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
118 int fh_len, int fh_type)
119 {
120 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
121 }
122
123 static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
124 int fh_len, int fh_type)
125 {
126 return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
127 }
128
129 static struct dentry *ufs_get_parent(struct dentry *child)
130 {
131 ino_t ino;
132
133 ino = ufs_inode_by_name(d_inode(child), &dotdot_name);
134 if (!ino)
135 return ERR_PTR(-ENOENT);
136 return d_obtain_alias(ufs_iget(child->d_sb, ino));
137 }
138
139 static const struct export_operations ufs_export_ops = {
140 .encode_fh = generic_encode_ino32_fh,
141 .fh_to_dentry = ufs_fh_to_dentry,
142 .fh_to_parent = ufs_fh_to_parent,
143 .get_parent = ufs_get_parent,
144 };
145
146 #ifdef CONFIG_UFS_DEBUG
147 /*
148 * Print contents of ufs_super_block, useful for debugging
149 */
150 static void ufs_print_super_stuff(struct super_block *sb,
151 struct ufs_super_block_first *usb1,
152 struct ufs_super_block_second *usb2,
153 struct ufs_super_block_third *usb3)
154 {
155 u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
156
157 pr_debug("ufs_print_super_stuff\n");
158 pr_debug(" magic: 0x%x\n", magic);
159 if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
160 pr_debug(" fs_size: %llu\n", (unsigned long long)
161 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
162 pr_debug(" fs_dsize: %llu\n", (unsigned long long)
163 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
164 pr_debug(" bsize: %u\n",
165 fs32_to_cpu(sb, usb1->fs_bsize));
166 pr_debug(" fsize: %u\n",
167 fs32_to_cpu(sb, usb1->fs_fsize));
168 pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
169 pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
170 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
171 pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
172 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
173 pr_debug(" cs_nbfree(No of free blocks): %llu\n",
174 (unsigned long long)
175 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
176 pr_info(" cs_nifree(Num of free inodes): %llu\n",
177 (unsigned long long)
178 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
179 pr_info(" cs_nffree(Num of free frags): %llu\n",
180 (unsigned long long)
181 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
182 pr_info(" fs_maxsymlinklen: %u\n",
183 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
184 } else {
185 pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
186 pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
187 pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
188 pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
189 pr_debug(" cgoffset: %u\n",
190 fs32_to_cpu(sb, usb1->fs_cgoffset));
191 pr_debug(" ~cgmask: 0x%x\n",
192 ~fs32_to_cpu(sb, usb1->fs_cgmask));
193 pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
194 pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
195 pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
196 pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
197 pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
198 pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
199 pr_debug(" fragshift: %u\n",
200 fs32_to_cpu(sb, usb1->fs_fragshift));
201 pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
202 pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
203 pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
204 pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
205 pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
206 pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
207 pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
208 pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
209 pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
210 pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
211 pr_debug(" fstodb: %u\n",
212 fs32_to_cpu(sb, usb1->fs_fsbtodb));
213 pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
214 pr_debug(" ndir %u\n",
215 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
216 pr_debug(" nifree %u\n",
217 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
218 pr_debug(" nbfree %u\n",
219 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
220 pr_debug(" nffree %u\n",
221 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
222 }
223 pr_debug("\n");
224 }
225
226 /*
227 * Print contents of ufs_cylinder_group, useful for debugging
228 */
229 static void ufs_print_cylinder_stuff(struct super_block *sb,
230 struct ufs_cylinder_group *cg)
231 {
232 pr_debug("\nufs_print_cylinder_stuff\n");
233 pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
234 pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
235 pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
236 pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
237 pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
238 pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
239 pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
240 pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
241 pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
242 pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
243 pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
244 pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
245 pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
246 pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
247 pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
248 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
249 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
250 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
251 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
252 pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
253 pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
254 pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
255 pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
256 pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
257 pr_debug(" clustersumoff %u\n",
258 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
259 pr_debug(" clusteroff %u\n",
260 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
261 pr_debug(" nclusterblks %u\n",
262 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
263 pr_debug("\n");
264 }
265 #else
266 # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
267 # define ufs_print_cylinder_stuff(sb, cg) /**/
268 #endif /* CONFIG_UFS_DEBUG */
269
270 static const struct super_operations ufs_super_ops;
271
272 void ufs_error (struct super_block * sb, const char * function,
273 const char * fmt, ...)
274 {
275 struct ufs_sb_private_info * uspi;
276 struct ufs_super_block_first * usb1;
277 struct va_format vaf;
278 va_list args;
279
280 uspi = UFS_SB(sb)->s_uspi;
281 usb1 = ubh_get_usb_first(uspi);
282
283 if (!sb_rdonly(sb)) {
284 usb1->fs_clean = UFS_FSBAD;
285 ubh_mark_buffer_dirty(USPI_UBH(uspi));
286 ufs_mark_sb_dirty(sb);
287 sb->s_flags |= SB_RDONLY;
288 }
289 va_start(args, fmt);
290 vaf.fmt = fmt;
291 vaf.va = &args;
292 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
293 case UFS_MOUNT_ONERROR_PANIC:
294 panic("panic (device %s): %s: %pV\n",
295 sb->s_id, function, &vaf);
296
297 case UFS_MOUNT_ONERROR_LOCK:
298 case UFS_MOUNT_ONERROR_UMOUNT:
299 case UFS_MOUNT_ONERROR_REPAIR:
300 pr_crit("error (device %s): %s: %pV\n",
301 sb->s_id, function, &vaf);
302 }
303 va_end(args);
304 }
305
306 void ufs_panic (struct super_block * sb, const char * function,
307 const char * fmt, ...)
308 {
309 struct ufs_sb_private_info * uspi;
310 struct ufs_super_block_first * usb1;
311 struct va_format vaf;
312 va_list args;
313
314 uspi = UFS_SB(sb)->s_uspi;
315 usb1 = ubh_get_usb_first(uspi);
316
317 if (!sb_rdonly(sb)) {
318 usb1->fs_clean = UFS_FSBAD;
319 ubh_mark_buffer_dirty(USPI_UBH(uspi));
320 ufs_mark_sb_dirty(sb);
321 }
322 va_start(args, fmt);
323 vaf.fmt = fmt;
324 vaf.va = &args;
325 sb->s_flags |= SB_RDONLY;
326 pr_crit("panic (device %s): %s: %pV\n",
327 sb->s_id, function, &vaf);
328 va_end(args);
329 }
330
331 void ufs_warning (struct super_block * sb, const char * function,
332 const char * fmt, ...)
333 {
334 struct va_format vaf;
335 va_list args;
336
337 va_start(args, fmt);
338 vaf.fmt = fmt;
339 vaf.va = &args;
340 pr_warn("(device %s): %s: %pV\n",
341 sb->s_id, function, &vaf);
342 va_end(args);
343 }
344
345 enum {
346 Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
347 Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
348 Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
349 Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
350 Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
351 Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
352 Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
353 Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
354 Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
355 Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
356 Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
357 Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
358 Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
359 Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
360 Opt_err
361 };
362
363 static const match_table_t tokens = {
364 {Opt_type_old, "ufstype=old"},
365 {Opt_type_sunx86, "ufstype=sunx86"},
366 {Opt_type_sun, "ufstype=sun"},
367 {Opt_type_sunos, "ufstype=sunos"},
368 {Opt_type_44bsd, "ufstype=44bsd"},
369 {Opt_type_ufs2, "ufstype=ufs2"},
370 {Opt_type_ufs2, "ufstype=5xbsd"},
371 {Opt_type_hp, "ufstype=hp"},
372 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
373 {Opt_type_nextstep, "ufstype=nextstep"},
374 {Opt_type_openstep, "ufstype=openstep"},
375 /*end of possible ufs types */
376 {Opt_onerror_panic, "onerror=panic"},
377 {Opt_onerror_lock, "onerror=lock"},
378 {Opt_onerror_umount, "onerror=umount"},
379 {Opt_onerror_repair, "onerror=repair"},
380 {Opt_err, NULL}
381 };
382
383 static int ufs_parse_options (char * options, unsigned * mount_options)
384 {
385 char * p;
386
387 UFSD("ENTER\n");
388
389 if (!options)
390 return 1;
391
392 while ((p = strsep(&options, ",")) != NULL) {
393 substring_t args[MAX_OPT_ARGS];
394 int token;
395 if (!*p)
396 continue;
397
398 token = match_token(p, tokens, args);
399 switch (token) {
400 case Opt_type_old:
401 ufs_clear_opt (*mount_options, UFSTYPE);
402 ufs_set_opt (*mount_options, UFSTYPE_OLD);
403 break;
404 case Opt_type_sunx86:
405 ufs_clear_opt (*mount_options, UFSTYPE);
406 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
407 break;
408 case Opt_type_sun:
409 ufs_clear_opt (*mount_options, UFSTYPE);
410 ufs_set_opt (*mount_options, UFSTYPE_SUN);
411 break;
412 case Opt_type_sunos:
413 ufs_clear_opt(*mount_options, UFSTYPE);
414 ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
415 break;
416 case Opt_type_44bsd:
417 ufs_clear_opt (*mount_options, UFSTYPE);
418 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
419 break;
420 case Opt_type_ufs2:
421 ufs_clear_opt(*mount_options, UFSTYPE);
422 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
423 break;
424 case Opt_type_hp:
425 ufs_clear_opt (*mount_options, UFSTYPE);
426 ufs_set_opt (*mount_options, UFSTYPE_HP);
427 break;
428 case Opt_type_nextstepcd:
429 ufs_clear_opt (*mount_options, UFSTYPE);
430 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
431 break;
432 case Opt_type_nextstep:
433 ufs_clear_opt (*mount_options, UFSTYPE);
434 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
435 break;
436 case Opt_type_openstep:
437 ufs_clear_opt (*mount_options, UFSTYPE);
438 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
439 break;
440 case Opt_onerror_panic:
441 ufs_clear_opt (*mount_options, ONERROR);
442 ufs_set_opt (*mount_options, ONERROR_PANIC);
443 break;
444 case Opt_onerror_lock:
445 ufs_clear_opt (*mount_options, ONERROR);
446 ufs_set_opt (*mount_options, ONERROR_LOCK);
447 break;
448 case Opt_onerror_umount:
449 ufs_clear_opt (*mount_options, ONERROR);
450 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
451 break;
452 case Opt_onerror_repair:
453 pr_err("Unable to do repair on error, will lock lock instead\n");
454 ufs_clear_opt (*mount_options, ONERROR);
455 ufs_set_opt (*mount_options, ONERROR_REPAIR);
456 break;
457 default:
458 pr_err("Invalid option: \"%s\" or missing value\n", p);
459 return 0;
460 }
461 }
462 return 1;
463 }
464
465 /*
466 * Different types of UFS hold fs_cstotal in different
467 * places, and use different data structure for it.
468 * To make things simpler we just copy fs_cstotal to ufs_sb_private_info
469 */
470 static void ufs_setup_cstotal(struct super_block *sb)
471 {
472 struct ufs_sb_info *sbi = UFS_SB(sb);
473 struct ufs_sb_private_info *uspi = sbi->s_uspi;
474 struct ufs_super_block_first *usb1;
475 struct ufs_super_block_second *usb2;
476 struct ufs_super_block_third *usb3;
477 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
478
479 UFSD("ENTER, mtype=%u\n", mtype);
480 usb1 = ubh_get_usb_first(uspi);
481 usb2 = ubh_get_usb_second(uspi);
482 usb3 = ubh_get_usb_third(uspi);
483
484 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
485 (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) ||
486 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
487 /*we have statistic in different place, then usual*/
488 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
489 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
490 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
491 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
492 } else {
493 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
494 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
495 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
496 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
497 }
498 UFSD("EXIT\n");
499 }
500
501 /*
502 * Read on-disk structures associated with cylinder groups
503 */
504 static int ufs_read_cylinder_structures(struct super_block *sb)
505 {
506 struct ufs_sb_info *sbi = UFS_SB(sb);
507 struct ufs_sb_private_info *uspi = sbi->s_uspi;
508 unsigned char * base, * space;
509 unsigned size, blks, i;
510
511 UFSD("ENTER\n");
512
513 /*
514 * Read cs structures from (usually) first data block
515 * on the device.
516 */
517 size = uspi->s_cssize;
518 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
519 base = space = kmalloc(size, GFP_NOFS);
520 if (!base)
521 goto failed;
522 sbi->s_csp = (struct ufs_csum *)space;
523 for (i = 0; i < blks; i++) {
524 struct buffer_head *bh = sb_bread(sb, uspi->s_csaddr + i);
525 if (!bh)
526 goto failed;
527 memcpy(space, bh->b_data, uspi->s_fsize);
528 space += uspi->s_fsize;
529 brelse (bh);
530 }
531
532 /*
533 * Read cylinder group (we read only first fragment from block
534 * at this time) and prepare internal data structures for cg caching.
535 */
536 sbi->s_ucg = kmalloc_array(uspi->s_ncg, sizeof(struct buffer_head *),
537 GFP_NOFS);
538 if (!sbi->s_ucg)
539 goto failed;
540 for (i = 0; i < uspi->s_ncg; i++)
541 sbi->s_ucg[i] = NULL;
542 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
543 sbi->s_ucpi[i] = NULL;
544 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
545 }
546 for (i = 0; i < uspi->s_ncg; i++) {
547 UFSD("read cg %u\n", i);
548 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
549 goto failed;
550 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
551 goto failed;
552
553 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
554 }
555 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
556 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
557 goto failed;
558 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
559 }
560 sbi->s_cg_loaded = 0;
561 UFSD("EXIT\n");
562 return 1;
563
564 failed:
565 kfree (base);
566 if (sbi->s_ucg) {
567 for (i = 0; i < uspi->s_ncg; i++)
568 if (sbi->s_ucg[i])
569 brelse (sbi->s_ucg[i]);
570 kfree (sbi->s_ucg);
571 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
572 kfree (sbi->s_ucpi[i]);
573 }
574 UFSD("EXIT (FAILED)\n");
575 return 0;
576 }
577
578 /*
579 * Sync our internal copy of fs_cstotal with disk
580 */
581 static void ufs_put_cstotal(struct super_block *sb)
582 {
583 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
584 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
585 struct ufs_super_block_first *usb1;
586 struct ufs_super_block_second *usb2;
587 struct ufs_super_block_third *usb3;
588
589 UFSD("ENTER\n");
590 usb1 = ubh_get_usb_first(uspi);
591 usb2 = ubh_get_usb_second(uspi);
592 usb3 = ubh_get_usb_third(uspi);
593
594 if (mtype == UFS_MOUNT_UFSTYPE_UFS2) {
595 /*we have statistic in different place, then usual*/
596 usb2->fs_un.fs_u2.cs_ndir =
597 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
598 usb2->fs_un.fs_u2.cs_nbfree =
599 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
600 usb3->fs_un1.fs_u2.cs_nifree =
601 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
602 usb3->fs_un1.fs_u2.cs_nffree =
603 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
604 goto out;
605 }
606
607 if (mtype == UFS_MOUNT_UFSTYPE_44BSD &&
608 (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) {
609 /* store stats in both old and new places */
610 usb2->fs_un.fs_u2.cs_ndir =
611 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
612 usb2->fs_un.fs_u2.cs_nbfree =
613 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
614 usb3->fs_un1.fs_u2.cs_nifree =
615 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
616 usb3->fs_un1.fs_u2.cs_nffree =
617 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
618 }
619 usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
620 usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
621 usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
622 usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
623 out:
624 ubh_mark_buffer_dirty(USPI_UBH(uspi));
625 ufs_print_super_stuff(sb, usb1, usb2, usb3);
626 UFSD("EXIT\n");
627 }
628
629 /**
630 * ufs_put_super_internal() - put on-disk intrenal structures
631 * @sb: pointer to super_block structure
632 * Put on-disk structures associated with cylinder groups
633 * and write them back to disk, also update cs_total on disk
634 */
635 static void ufs_put_super_internal(struct super_block *sb)
636 {
637 struct ufs_sb_info *sbi = UFS_SB(sb);
638 struct ufs_sb_private_info *uspi = sbi->s_uspi;
639 unsigned char * base, * space;
640 unsigned blks, size, i;
641
642
643 UFSD("ENTER\n");
644
645 ufs_put_cstotal(sb);
646 size = uspi->s_cssize;
647 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
648 base = space = (char*) sbi->s_csp;
649 for (i = 0; i < blks; i++, space += uspi->s_fsize) {
650 struct buffer_head *bh = sb_bread(sb, uspi->s_csaddr + i);
651
652 if (unlikely(!bh)) { // better than an oops...
653 ufs_panic(sb, __func__,
654 "can't write part of cylinder group summary");
655 continue;
656 }
657 memcpy(bh->b_data, space, uspi->s_fsize);
658 mark_buffer_dirty(bh);
659 brelse(bh);
660 }
661 for (i = 0; i < sbi->s_cg_loaded; i++) {
662 ufs_put_cylinder (sb, i);
663 kfree (sbi->s_ucpi[i]);
664 }
665 for (; i < UFS_MAX_GROUP_LOADED; i++)
666 kfree (sbi->s_ucpi[i]);
667 for (i = 0; i < uspi->s_ncg; i++)
668 brelse (sbi->s_ucg[i]);
669 kfree (sbi->s_ucg);
670 kfree (base);
671
672 UFSD("EXIT\n");
673 }
674
675 static int ufs_sync_fs(struct super_block *sb, int wait)
676 {
677 struct ufs_sb_private_info * uspi;
678 struct ufs_super_block_first * usb1;
679 struct ufs_super_block_third * usb3;
680 unsigned flags;
681
682 mutex_lock(&UFS_SB(sb)->s_lock);
683
684 UFSD("ENTER\n");
685
686 flags = UFS_SB(sb)->s_flags;
687 uspi = UFS_SB(sb)->s_uspi;
688 usb1 = ubh_get_usb_first(uspi);
689 usb3 = ubh_get_usb_third(uspi);
690
691 usb1->fs_time = ufs_get_seconds(sb);
692 if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
693 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
694 (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
695 ufs_set_fs_state(sb, usb1, usb3,
696 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
697 ufs_put_cstotal(sb);
698
699 UFSD("EXIT\n");
700 mutex_unlock(&UFS_SB(sb)->s_lock);
701
702 return 0;
703 }
704
705 static void delayed_sync_fs(struct work_struct *work)
706 {
707 struct ufs_sb_info *sbi;
708
709 sbi = container_of(work, struct ufs_sb_info, sync_work.work);
710
711 spin_lock(&sbi->work_lock);
712 sbi->work_queued = 0;
713 spin_unlock(&sbi->work_lock);
714
715 ufs_sync_fs(sbi->sb, 1);
716 }
717
718 void ufs_mark_sb_dirty(struct super_block *sb)
719 {
720 struct ufs_sb_info *sbi = UFS_SB(sb);
721 unsigned long delay;
722
723 spin_lock(&sbi->work_lock);
724 if (!sbi->work_queued) {
725 delay = msecs_to_jiffies(dirty_writeback_interval * 10);
726 queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
727 sbi->work_queued = 1;
728 }
729 spin_unlock(&sbi->work_lock);
730 }
731
732 static void ufs_put_super(struct super_block *sb)
733 {
734 struct ufs_sb_info * sbi = UFS_SB(sb);
735
736 UFSD("ENTER\n");
737
738 if (!sb_rdonly(sb))
739 ufs_put_super_internal(sb);
740 cancel_delayed_work_sync(&sbi->sync_work);
741
742 ubh_brelse_uspi (sbi->s_uspi);
743 kfree (sbi->s_uspi);
744 kfree (sbi);
745 sb->s_fs_info = NULL;
746 UFSD("EXIT\n");
747 return;
748 }
749
750 static u64 ufs_max_bytes(struct super_block *sb)
751 {
752 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
753 int bits = uspi->s_apbshift;
754 u64 res;
755
756 if (bits > 21)
757 res = ~0ULL;
758 else
759 res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) +
760 (1LL << (3*bits));
761
762 if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift))
763 return MAX_LFS_FILESIZE;
764 return res << uspi->s_bshift;
765 }
766
767 static int ufs_fill_super(struct super_block *sb, void *data, int silent)
768 {
769 struct ufs_sb_info * sbi;
770 struct ufs_sb_private_info * uspi;
771 struct ufs_super_block_first * usb1;
772 struct ufs_super_block_second * usb2;
773 struct ufs_super_block_third * usb3;
774 struct ufs_buffer_head * ubh;
775 struct inode *inode;
776 unsigned block_size, super_block_size;
777 unsigned flags;
778 unsigned super_block_offset;
779 unsigned maxsymlen;
780 int ret = -EINVAL;
781
782 uspi = NULL;
783 ubh = NULL;
784 flags = 0;
785
786 UFSD("ENTER\n");
787
788 #ifndef CONFIG_UFS_FS_WRITE
789 if (!sb_rdonly(sb)) {
790 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
791 return -EROFS;
792 }
793 #endif
794
795 sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
796 if (!sbi)
797 goto failed_nomem;
798 sb->s_fs_info = sbi;
799 sbi->sb = sb;
800
801 UFSD("flag %u\n", (int)(sb_rdonly(sb)));
802
803 mutex_init(&sbi->s_lock);
804 spin_lock_init(&sbi->work_lock);
805 INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
806 /*
807 * Set default mount options
808 * Parse mount options
809 */
810 sbi->s_mount_opt = 0;
811 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
812 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
813 pr_err("wrong mount options\n");
814 goto failed;
815 }
816 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
817 if (!silent)
818 pr_err("You didn't specify the type of your ufs filesystem\n\n"
819 "mount -t ufs -o ufstype="
820 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
821 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
822 "default is ufstype=old\n");
823 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
824 }
825
826 uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
827 sbi->s_uspi = uspi;
828 if (!uspi)
829 goto failed;
830 uspi->s_dirblksize = UFS_SECTOR_SIZE;
831 super_block_offset=UFS_SBLOCK;
832
833 sb->s_maxbytes = MAX_LFS_FILESIZE;
834
835 sb->s_time_gran = NSEC_PER_SEC;
836 sb->s_time_min = S32_MIN;
837 sb->s_time_max = S32_MAX;
838
839 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
840 case UFS_MOUNT_UFSTYPE_44BSD:
841 UFSD("ufstype=44bsd\n");
842 uspi->s_fsize = block_size = 512;
843 uspi->s_fmask = ~(512 - 1);
844 uspi->s_fshift = 9;
845 uspi->s_sbsize = super_block_size = 1536;
846 uspi->s_sbbase = 0;
847 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
848 break;
849 case UFS_MOUNT_UFSTYPE_UFS2:
850 UFSD("ufstype=ufs2\n");
851 super_block_offset=SBLOCK_UFS2;
852 uspi->s_fsize = block_size = 512;
853 uspi->s_fmask = ~(512 - 1);
854 uspi->s_fshift = 9;
855 uspi->s_sbsize = super_block_size = 1536;
856 uspi->s_sbbase = 0;
857 sb->s_time_gran = 1;
858 sb->s_time_min = S64_MIN;
859 sb->s_time_max = S64_MAX;
860 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
861 break;
862
863 case UFS_MOUNT_UFSTYPE_SUN:
864 UFSD("ufstype=sun\n");
865 uspi->s_fsize = block_size = 1024;
866 uspi->s_fmask = ~(1024 - 1);
867 uspi->s_fshift = 10;
868 uspi->s_sbsize = super_block_size = 2048;
869 uspi->s_sbbase = 0;
870 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
871 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
872 break;
873
874 case UFS_MOUNT_UFSTYPE_SUNOS:
875 UFSD("ufstype=sunos\n");
876 uspi->s_fsize = block_size = 1024;
877 uspi->s_fmask = ~(1024 - 1);
878 uspi->s_fshift = 10;
879 uspi->s_sbsize = 2048;
880 super_block_size = 2048;
881 uspi->s_sbbase = 0;
882 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
883 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
884 break;
885
886 case UFS_MOUNT_UFSTYPE_SUNx86:
887 UFSD("ufstype=sunx86\n");
888 uspi->s_fsize = block_size = 1024;
889 uspi->s_fmask = ~(1024 - 1);
890 uspi->s_fshift = 10;
891 uspi->s_sbsize = super_block_size = 2048;
892 uspi->s_sbbase = 0;
893 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
894 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
895 break;
896
897 case UFS_MOUNT_UFSTYPE_OLD:
898 UFSD("ufstype=old\n");
899 uspi->s_fsize = block_size = 1024;
900 uspi->s_fmask = ~(1024 - 1);
901 uspi->s_fshift = 10;
902 uspi->s_sbsize = super_block_size = 2048;
903 uspi->s_sbbase = 0;
904 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
905 if (!sb_rdonly(sb)) {
906 if (!silent)
907 pr_info("ufstype=old is supported read-only\n");
908 sb->s_flags |= SB_RDONLY;
909 }
910 break;
911
912 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
913 UFSD("ufstype=nextstep\n");
914 uspi->s_fsize = block_size = 1024;
915 uspi->s_fmask = ~(1024 - 1);
916 uspi->s_fshift = 10;
917 uspi->s_sbsize = super_block_size = 2048;
918 uspi->s_sbbase = 0;
919 uspi->s_dirblksize = 1024;
920 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
921 if (!sb_rdonly(sb)) {
922 if (!silent)
923 pr_info("ufstype=nextstep is supported read-only\n");
924 sb->s_flags |= SB_RDONLY;
925 }
926 break;
927
928 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
929 UFSD("ufstype=nextstep-cd\n");
930 uspi->s_fsize = block_size = 2048;
931 uspi->s_fmask = ~(2048 - 1);
932 uspi->s_fshift = 11;
933 uspi->s_sbsize = super_block_size = 2048;
934 uspi->s_sbbase = 0;
935 uspi->s_dirblksize = 1024;
936 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
937 if (!sb_rdonly(sb)) {
938 if (!silent)
939 pr_info("ufstype=nextstep-cd is supported read-only\n");
940 sb->s_flags |= SB_RDONLY;
941 }
942 break;
943
944 case UFS_MOUNT_UFSTYPE_OPENSTEP:
945 UFSD("ufstype=openstep\n");
946 uspi->s_fsize = block_size = 1024;
947 uspi->s_fmask = ~(1024 - 1);
948 uspi->s_fshift = 10;
949 uspi->s_sbsize = super_block_size = 2048;
950 uspi->s_sbbase = 0;
951 uspi->s_dirblksize = 1024;
952 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
953 if (!sb_rdonly(sb)) {
954 if (!silent)
955 pr_info("ufstype=openstep is supported read-only\n");
956 sb->s_flags |= SB_RDONLY;
957 }
958 break;
959
960 case UFS_MOUNT_UFSTYPE_HP:
961 UFSD("ufstype=hp\n");
962 uspi->s_fsize = block_size = 1024;
963 uspi->s_fmask = ~(1024 - 1);
964 uspi->s_fshift = 10;
965 uspi->s_sbsize = super_block_size = 2048;
966 uspi->s_sbbase = 0;
967 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
968 if (!sb_rdonly(sb)) {
969 if (!silent)
970 pr_info("ufstype=hp is supported read-only\n");
971 sb->s_flags |= SB_RDONLY;
972 }
973 break;
974 default:
975 if (!silent)
976 pr_err("unknown ufstype\n");
977 goto failed;
978 }
979
980 again:
981 if (!sb_set_blocksize(sb, block_size)) {
982 pr_err("failed to set blocksize\n");
983 goto failed;
984 }
985
986 /*
987 * read ufs super block from device
988 */
989
990 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
991
992 if (!ubh)
993 goto failed;
994
995 usb1 = ubh_get_usb_first(uspi);
996 usb2 = ubh_get_usb_second(uspi);
997 usb3 = ubh_get_usb_third(uspi);
998
999 /* Sort out mod used on SunOS 4.1.3 for fs_state */
1000 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
1001 if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
1002 (uspi->s_postblformat != UFS_42POSTBLFMT)) {
1003 flags &= ~UFS_ST_MASK;
1004 flags |= UFS_ST_SUN;
1005 }
1006
1007 if ((flags & UFS_ST_MASK) == UFS_ST_44BSD &&
1008 uspi->s_postblformat == UFS_42POSTBLFMT) {
1009 if (!silent)
1010 pr_err("this is not a 44bsd filesystem");
1011 goto failed;
1012 }
1013
1014 /*
1015 * Check ufs magic number
1016 */
1017 sbi->s_bytesex = BYTESEX_LE;
1018 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1019 case UFS_MAGIC:
1020 case UFS_MAGIC_BW:
1021 case UFS2_MAGIC:
1022 case UFS_MAGIC_LFN:
1023 case UFS_MAGIC_FEA:
1024 case UFS_MAGIC_4GB:
1025 goto magic_found;
1026 }
1027 sbi->s_bytesex = BYTESEX_BE;
1028 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1029 case UFS_MAGIC:
1030 case UFS_MAGIC_BW:
1031 case UFS2_MAGIC:
1032 case UFS_MAGIC_LFN:
1033 case UFS_MAGIC_FEA:
1034 case UFS_MAGIC_4GB:
1035 goto magic_found;
1036 }
1037
1038 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
1039 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
1040 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
1041 && uspi->s_sbbase < 256) {
1042 ubh_brelse_uspi(uspi);
1043 ubh = NULL;
1044 uspi->s_sbbase += 8;
1045 goto again;
1046 }
1047 if (!silent)
1048 pr_err("%s(): bad magic number\n", __func__);
1049 goto failed;
1050
1051 magic_found:
1052 /*
1053 * Check block and fragment sizes
1054 */
1055 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1056 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1057 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1058 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1059 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1060
1061 if (!is_power_of_2(uspi->s_fsize)) {
1062 pr_err("%s(): fragment size %u is not a power of 2\n",
1063 __func__, uspi->s_fsize);
1064 goto failed;
1065 }
1066 if (uspi->s_fsize < 512) {
1067 pr_err("%s(): fragment size %u is too small\n",
1068 __func__, uspi->s_fsize);
1069 goto failed;
1070 }
1071 if (uspi->s_fsize > 4096) {
1072 pr_err("%s(): fragment size %u is too large\n",
1073 __func__, uspi->s_fsize);
1074 goto failed;
1075 }
1076 if (!is_power_of_2(uspi->s_bsize)) {
1077 pr_err("%s(): block size %u is not a power of 2\n",
1078 __func__, uspi->s_bsize);
1079 goto failed;
1080 }
1081 if (uspi->s_bsize < 4096) {
1082 pr_err("%s(): block size %u is too small\n",
1083 __func__, uspi->s_bsize);
1084 goto failed;
1085 }
1086 if (uspi->s_bsize / uspi->s_fsize > 8) {
1087 pr_err("%s(): too many fragments per block (%u)\n",
1088 __func__, uspi->s_bsize / uspi->s_fsize);
1089 goto failed;
1090 }
1091 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1092 ubh_brelse_uspi(uspi);
1093 ubh = NULL;
1094 block_size = uspi->s_fsize;
1095 super_block_size = uspi->s_sbsize;
1096 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1097 goto again;
1098 }
1099
1100 sbi->s_flags = flags;/*after that line some functions use s_flags*/
1101 ufs_print_super_stuff(sb, usb1, usb2, usb3);
1102
1103 /*
1104 * Check, if file system was correctly unmounted.
1105 * If not, make it read only.
1106 */
1107 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1108 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1109 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1110 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1111 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1112 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1113 switch(usb1->fs_clean) {
1114 case UFS_FSCLEAN:
1115 UFSD("fs is clean\n");
1116 break;
1117 case UFS_FSSTABLE:
1118 UFSD("fs is stable\n");
1119 break;
1120 case UFS_FSLOG:
1121 UFSD("fs is logging fs\n");
1122 break;
1123 case UFS_FSOSF1:
1124 UFSD("fs is DEC OSF/1\n");
1125 break;
1126 case UFS_FSACTIVE:
1127 pr_err("%s(): fs is active\n", __func__);
1128 sb->s_flags |= SB_RDONLY;
1129 break;
1130 case UFS_FSBAD:
1131 pr_err("%s(): fs is bad\n", __func__);
1132 sb->s_flags |= SB_RDONLY;
1133 break;
1134 default:
1135 pr_err("%s(): can't grok fs_clean 0x%x\n",
1136 __func__, usb1->fs_clean);
1137 sb->s_flags |= SB_RDONLY;
1138 break;
1139 }
1140 } else {
1141 pr_err("%s(): fs needs fsck\n", __func__);
1142 sb->s_flags |= SB_RDONLY;
1143 }
1144
1145 /*
1146 * Read ufs_super_block into internal data structures
1147 */
1148 sb->s_op = &ufs_super_ops;
1149 sb->s_export_op = &ufs_export_ops;
1150
1151 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1152
1153 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1154 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1155 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1156 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1157 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1158 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1159
1160 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1161 uspi->s_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1162 uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1163 } else {
1164 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1165 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1166 }
1167
1168 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1169 /* s_bsize already set */
1170 /* s_fsize already set */
1171 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1172 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1173 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1174 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1175 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1176 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1177 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1178 uspi->s_fshift);
1179 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1180 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1181 /* s_sbsize already set */
1182 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1183 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1184 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1185 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1186 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1187 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1188 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1189 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1190
1191 if (uspi->fs_magic == UFS2_MAGIC)
1192 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1193 else
1194 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1195
1196 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1197 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1198 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1199 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1200 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1201 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1202 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1203 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1204 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1205 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1206 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1207 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1208 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1209 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1210
1211 uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize,
1212 uspi->s_minfree, 100);
1213 if (uspi->s_minfree <= 5) {
1214 uspi->s_time_to_space = ~0ULL;
1215 uspi->s_space_to_time = 0;
1216 usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE);
1217 } else {
1218 uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1;
1219 uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize,
1220 uspi->s_minfree - 2, 100) - 1;
1221 }
1222
1223 /*
1224 * Compute another frequently used values
1225 */
1226 uspi->s_fpbmask = uspi->s_fpb - 1;
1227 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1228 uspi->s_apbshift = uspi->s_bshift - 3;
1229 else
1230 uspi->s_apbshift = uspi->s_bshift - 2;
1231
1232 uspi->s_apb = 1 << uspi->s_apbshift;
1233 uspi->s_apbmask = uspi->s_apb - 1;
1234 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1235 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1236 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1237 uspi->s_bpf = uspi->s_fsize << 3;
1238 uspi->s_bpfshift = uspi->s_fshift + 3;
1239 uspi->s_bpfmask = uspi->s_bpf - 1;
1240 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1241 (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1242 uspi->s_maxsymlinklen =
1243 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1244
1245 if (uspi->fs_magic == UFS2_MAGIC)
1246 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1247 else
1248 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1249 if (uspi->s_maxsymlinklen > maxsymlen) {
1250 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1251 "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1252 uspi->s_maxsymlinklen = maxsymlen;
1253 }
1254 sb->s_maxbytes = ufs_max_bytes(sb);
1255 sb->s_max_links = UFS_LINK_MAX;
1256
1257 inode = ufs_iget(sb, UFS_ROOTINO);
1258 if (IS_ERR(inode)) {
1259 ret = PTR_ERR(inode);
1260 goto failed;
1261 }
1262 sb->s_root = d_make_root(inode);
1263 if (!sb->s_root) {
1264 ret = -ENOMEM;
1265 goto failed;
1266 }
1267
1268 ufs_setup_cstotal(sb);
1269 /*
1270 * Read cylinder group structures
1271 */
1272 if (!sb_rdonly(sb))
1273 if (!ufs_read_cylinder_structures(sb))
1274 goto failed;
1275
1276 UFSD("EXIT\n");
1277 return 0;
1278
1279 failed:
1280 if (ubh)
1281 ubh_brelse_uspi (uspi);
1282 kfree (uspi);
1283 kfree(sbi);
1284 sb->s_fs_info = NULL;
1285 UFSD("EXIT (FAILED)\n");
1286 return ret;
1287
1288 failed_nomem:
1289 UFSD("EXIT (NOMEM)\n");
1290 return -ENOMEM;
1291 }
1292
1293 static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1294 {
1295 struct ufs_sb_private_info * uspi;
1296 struct ufs_super_block_first * usb1;
1297 struct ufs_super_block_third * usb3;
1298 unsigned new_mount_opt, ufstype;
1299 unsigned flags;
1300
1301 sync_filesystem(sb);
1302 mutex_lock(&UFS_SB(sb)->s_lock);
1303 uspi = UFS_SB(sb)->s_uspi;
1304 flags = UFS_SB(sb)->s_flags;
1305 usb1 = ubh_get_usb_first(uspi);
1306 usb3 = ubh_get_usb_third(uspi);
1307
1308 /*
1309 * Allow the "check" option to be passed as a remount option.
1310 * It is not possible to change ufstype option during remount
1311 */
1312 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1313 new_mount_opt = 0;
1314 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1315 if (!ufs_parse_options (data, &new_mount_opt)) {
1316 mutex_unlock(&UFS_SB(sb)->s_lock);
1317 return -EINVAL;
1318 }
1319 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1320 new_mount_opt |= ufstype;
1321 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1322 pr_err("ufstype can't be changed during remount\n");
1323 mutex_unlock(&UFS_SB(sb)->s_lock);
1324 return -EINVAL;
1325 }
1326
1327 if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) {
1328 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1329 mutex_unlock(&UFS_SB(sb)->s_lock);
1330 return 0;
1331 }
1332
1333 /*
1334 * fs was mouted as rw, remounting ro
1335 */
1336 if (*mount_flags & SB_RDONLY) {
1337 ufs_put_super_internal(sb);
1338 usb1->fs_time = ufs_get_seconds(sb);
1339 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1340 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1341 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1342 ufs_set_fs_state(sb, usb1, usb3,
1343 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1344 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1345 sb->s_flags |= SB_RDONLY;
1346 } else {
1347 /*
1348 * fs was mounted as ro, remounting rw
1349 */
1350 #ifndef CONFIG_UFS_FS_WRITE
1351 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
1352 mutex_unlock(&UFS_SB(sb)->s_lock);
1353 return -EINVAL;
1354 #else
1355 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1356 ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1357 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1358 ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1359 ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1360 pr_err("this ufstype is read-only supported\n");
1361 mutex_unlock(&UFS_SB(sb)->s_lock);
1362 return -EINVAL;
1363 }
1364 if (!ufs_read_cylinder_structures(sb)) {
1365 pr_err("failed during remounting\n");
1366 mutex_unlock(&UFS_SB(sb)->s_lock);
1367 return -EPERM;
1368 }
1369 sb->s_flags &= ~SB_RDONLY;
1370 #endif
1371 }
1372 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1373 mutex_unlock(&UFS_SB(sb)->s_lock);
1374 return 0;
1375 }
1376
1377 static int ufs_show_options(struct seq_file *seq, struct dentry *root)
1378 {
1379 struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
1380 unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1381 const struct match_token *tp = tokens;
1382
1383 while (tp->token != Opt_onerror_panic && tp->token != mval)
1384 ++tp;
1385 BUG_ON(tp->token == Opt_onerror_panic);
1386 seq_printf(seq, ",%s", tp->pattern);
1387
1388 mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1389 while (tp->token != Opt_err && tp->token != mval)
1390 ++tp;
1391 BUG_ON(tp->token == Opt_err);
1392 seq_printf(seq, ",%s", tp->pattern);
1393
1394 return 0;
1395 }
1396
1397 static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1398 {
1399 struct super_block *sb = dentry->d_sb;
1400 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1401 unsigned flags = UFS_SB(sb)->s_flags;
1402 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1403
1404 mutex_lock(&UFS_SB(sb)->s_lock);
1405
1406 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1407 buf->f_type = UFS2_MAGIC;
1408 else
1409 buf->f_type = UFS_MAGIC;
1410
1411 buf->f_blocks = uspi->s_dsize;
1412 buf->f_bfree = ufs_freefrags(uspi);
1413 buf->f_ffree = uspi->cs_total.cs_nifree;
1414 buf->f_bsize = sb->s_blocksize;
1415 buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks)
1416 ? (buf->f_bfree - uspi->s_root_blocks) : 0;
1417 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1418 buf->f_namelen = UFS_MAXNAMLEN;
1419 buf->f_fsid = u64_to_fsid(id);
1420
1421 mutex_unlock(&UFS_SB(sb)->s_lock);
1422
1423 return 0;
1424 }
1425
1426 static struct kmem_cache * ufs_inode_cachep;
1427
1428 static struct inode *ufs_alloc_inode(struct super_block *sb)
1429 {
1430 struct ufs_inode_info *ei;
1431
1432 ei = alloc_inode_sb(sb, ufs_inode_cachep, GFP_NOFS);
1433 if (!ei)
1434 return NULL;
1435
1436 inode_set_iversion(&ei->vfs_inode, 1);
1437 seqlock_init(&ei->meta_lock);
1438 mutex_init(&ei->truncate_mutex);
1439 return &ei->vfs_inode;
1440 }
1441
1442 static void ufs_free_in_core_inode(struct inode *inode)
1443 {
1444 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1445 }
1446
1447 static void init_once(void *foo)
1448 {
1449 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1450
1451 inode_init_once(&ei->vfs_inode);
1452 }
1453
1454 static int __init init_inodecache(void)
1455 {
1456 ufs_inode_cachep = kmem_cache_create_usercopy("ufs_inode_cache",
1457 sizeof(struct ufs_inode_info), 0,
1458 (SLAB_RECLAIM_ACCOUNT | SLAB_ACCOUNT),
1459 offsetof(struct ufs_inode_info, i_u1.i_symlink),
1460 sizeof_field(struct ufs_inode_info,
1461 i_u1.i_symlink),
1462 init_once);
1463 if (ufs_inode_cachep == NULL)
1464 return -ENOMEM;
1465 return 0;
1466 }
1467
1468 static void destroy_inodecache(void)
1469 {
1470 /*
1471 * Make sure all delayed rcu free inodes are flushed before we
1472 * destroy cache.
1473 */
1474 rcu_barrier();
1475 kmem_cache_destroy(ufs_inode_cachep);
1476 }
1477
1478 static const struct super_operations ufs_super_ops = {
1479 .alloc_inode = ufs_alloc_inode,
1480 .free_inode = ufs_free_in_core_inode,
1481 .write_inode = ufs_write_inode,
1482 .evict_inode = ufs_evict_inode,
1483 .put_super = ufs_put_super,
1484 .sync_fs = ufs_sync_fs,
1485 .statfs = ufs_statfs,
1486 .remount_fs = ufs_remount,
1487 .show_options = ufs_show_options,
1488 };
1489
1490 static struct dentry *ufs_mount(struct file_system_type *fs_type,
1491 int flags, const char *dev_name, void *data)
1492 {
1493 return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1494 }
1495
1496 static struct file_system_type ufs_fs_type = {
1497 .owner = THIS_MODULE,
1498 .name = "ufs",
1499 .mount = ufs_mount,
1500 .kill_sb = kill_block_super,
1501 .fs_flags = FS_REQUIRES_DEV,
1502 };
1503 MODULE_ALIAS_FS("ufs");
1504
1505 static int __init init_ufs_fs(void)
1506 {
1507 int err = init_inodecache();
1508 if (err)
1509 goto out1;
1510 err = register_filesystem(&ufs_fs_type);
1511 if (err)
1512 goto out;
1513 return 0;
1514 out:
1515 destroy_inodecache();
1516 out1:
1517 return err;
1518 }
1519
1520 static void __exit exit_ufs_fs(void)
1521 {
1522 unregister_filesystem(&ufs_fs_type);
1523 destroy_inodecache();
1524 }
1525
1526 module_init(init_ufs_fs)
1527 module_exit(exit_ufs_fs)
1528 MODULE_DESCRIPTION("UFS Filesystem");
1529 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes