Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | #undef UFS_SUPER_DEBUG | |
94 | #undef UFS_SUPER_DEBUG_MORE | |
95 | ||
96 | ||
97 | #undef UFS_SUPER_DEBUG_MORE | |
98 | #ifdef UFS_SUPER_DEBUG | |
99 | #define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x; | |
100 | #else | |
101 | #define UFSD(x) | |
102 | #endif | |
103 | ||
104 | #ifdef UFS_SUPER_DEBUG_MORE | |
105 | /* | |
106 | * Print contents of ufs_super_block, useful for debugging | |
107 | */ | |
108 | void ufs_print_super_stuff(struct super_block *sb, | |
109 | struct ufs_super_block_first * usb1, | |
110 | struct ufs_super_block_second * usb2, | |
111 | struct ufs_super_block_third * usb3) | |
112 | { | |
113 | printk("ufs_print_super_stuff\n"); | |
114 | printk("size of usb: %u\n", sizeof(struct ufs_super_block)); | |
115 | printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb3->fs_magic)); | |
116 | printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); | |
117 | printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
118 | printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
119 | printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
120 | printk(" cgoffset: %u\n", fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
121 | printk(" ~cgmask: 0x%x\n", ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
122 | printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
123 | printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
124 | printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
125 | printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
126 | printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
127 | printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
128 | printk(" fragshift: %u\n", fs32_to_cpu(sb, usb1->fs_fragshift)); | |
129 | printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
130 | printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
131 | printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
132 | printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
133 | printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
134 | printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
135 | printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
136 | printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
137 | printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
138 | printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
139 | printk(" fstodb: %u\n", fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
140 | printk(" contigsumsize: %d\n", fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize)); | |
141 | printk(" postblformat: %u\n", fs32_to_cpu(sb, usb3->fs_postblformat)); | |
142 | printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
143 | printk(" ndir %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
144 | printk(" nifree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
145 | printk(" nbfree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
146 | printk(" nffree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
147 | printk("\n"); | |
148 | } | |
149 | ||
150 | /* | |
151 | * Print contents of ufs2 ufs_super_block, useful for debugging | |
152 | */ | |
153 | void ufs2_print_super_stuff( | |
154 | struct super_block *sb, | |
155 | struct ufs_super_block *usb) | |
156 | { | |
157 | printk("ufs_print_super_stuff\n"); | |
158 | printk("size of usb: %u\n", sizeof(struct ufs_super_block)); | |
159 | printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb->fs_magic)); | |
160 | printk(" fs_size: %u\n",fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size)); | |
161 | printk(" fs_dsize: %u\n",fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize)); | |
162 | printk(" bsize: %u\n", fs32_to_cpu(usb, usb->fs_bsize)); | |
163 | printk(" fsize: %u\n", fs32_to_cpu(usb, usb->fs_fsize)); | |
164 | printk(" fs_volname: %s\n", usb->fs_u11.fs_u2.fs_volname); | |
165 | printk(" fs_fsmnt: %s\n", usb->fs_u11.fs_u2.fs_fsmnt); | |
166 | printk(" fs_sblockloc: %u\n",fs64_to_cpu(sb, | |
167 | usb->fs_u11.fs_u2.fs_sblockloc)); | |
168 | printk(" cs_ndir(No of dirs): %u\n",fs64_to_cpu(sb, | |
169 | usb->fs_u11.fs_u2.fs_cstotal.cs_ndir)); | |
170 | printk(" cs_nbfree(No of free blocks): %u\n",fs64_to_cpu(sb, | |
171 | usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)); | |
172 | printk("\n"); | |
173 | } | |
174 | ||
175 | /* | |
176 | * Print contents of ufs_cylinder_group, useful for debugging | |
177 | */ | |
178 | void ufs_print_cylinder_stuff(struct super_block *sb, struct ufs_cylinder_group *cg) | |
179 | { | |
180 | printk("\nufs_print_cylinder_stuff\n"); | |
181 | printk("size of ucg: %u\n", sizeof(struct ufs_cylinder_group)); | |
182 | printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); | |
183 | printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
184 | printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
185 | printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
186 | printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
187 | printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
188 | printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
189 | printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
190 | printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
191 | printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
192 | printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
193 | printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
194 | printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
195 | printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
196 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), | |
197 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
198 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
199 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
200 | printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); | |
201 | printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
202 | printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
203 | printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
204 | printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
205 | printk(" clustersumoff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
206 | printk(" clusteroff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
207 | printk(" nclusterblks %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
208 | printk("\n"); | |
209 | } | |
210 | #endif /* UFS_SUPER_DEBUG_MORE */ | |
211 | ||
212 | static struct super_operations ufs_super_ops; | |
213 | ||
214 | static char error_buf[1024]; | |
215 | ||
216 | void ufs_error (struct super_block * sb, const char * function, | |
217 | const char * fmt, ...) | |
218 | { | |
219 | struct ufs_sb_private_info * uspi; | |
220 | struct ufs_super_block_first * usb1; | |
221 | va_list args; | |
222 | ||
223 | uspi = UFS_SB(sb)->s_uspi; | |
224 | usb1 = ubh_get_usb_first(USPI_UBH); | |
225 | ||
226 | if (!(sb->s_flags & MS_RDONLY)) { | |
227 | usb1->fs_clean = UFS_FSBAD; | |
228 | ubh_mark_buffer_dirty(USPI_UBH); | |
229 | sb->s_dirt = 1; | |
230 | sb->s_flags |= MS_RDONLY; | |
231 | } | |
232 | va_start (args, fmt); | |
233 | vsprintf (error_buf, fmt, args); | |
234 | va_end (args); | |
235 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { | |
236 | case UFS_MOUNT_ONERROR_PANIC: | |
237 | panic ("UFS-fs panic (device %s): %s: %s\n", | |
238 | sb->s_id, function, error_buf); | |
239 | ||
240 | case UFS_MOUNT_ONERROR_LOCK: | |
241 | case UFS_MOUNT_ONERROR_UMOUNT: | |
242 | case UFS_MOUNT_ONERROR_REPAIR: | |
243 | printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", | |
244 | sb->s_id, function, error_buf); | |
245 | } | |
246 | } | |
247 | ||
248 | void ufs_panic (struct super_block * sb, const char * function, | |
249 | const char * fmt, ...) | |
250 | { | |
251 | struct ufs_sb_private_info * uspi; | |
252 | struct ufs_super_block_first * usb1; | |
253 | va_list args; | |
254 | ||
255 | uspi = UFS_SB(sb)->s_uspi; | |
256 | usb1 = ubh_get_usb_first(USPI_UBH); | |
257 | ||
258 | if (!(sb->s_flags & MS_RDONLY)) { | |
259 | usb1->fs_clean = UFS_FSBAD; | |
260 | ubh_mark_buffer_dirty(USPI_UBH); | |
261 | sb->s_dirt = 1; | |
262 | } | |
263 | va_start (args, fmt); | |
264 | vsprintf (error_buf, fmt, args); | |
265 | va_end (args); | |
266 | sb->s_flags |= MS_RDONLY; | |
267 | printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", | |
268 | sb->s_id, function, error_buf); | |
269 | } | |
270 | ||
271 | void ufs_warning (struct super_block * sb, const char * function, | |
272 | const char * fmt, ...) | |
273 | { | |
274 | va_list args; | |
275 | ||
276 | va_start (args, fmt); | |
277 | vsprintf (error_buf, fmt, args); | |
278 | va_end (args); | |
279 | printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", | |
280 | sb->s_id, function, error_buf); | |
281 | } | |
282 | ||
283 | enum { | |
284 | Opt_type_old, Opt_type_sunx86, Opt_type_sun, Opt_type_44bsd, | |
285 | Opt_type_ufs2, Opt_type_hp, Opt_type_nextstepcd, Opt_type_nextstep, | |
286 | Opt_type_openstep, Opt_onerror_panic, Opt_onerror_lock, | |
287 | Opt_onerror_umount, Opt_onerror_repair, Opt_err | |
288 | }; | |
289 | ||
290 | static match_table_t tokens = { | |
291 | {Opt_type_old, "ufstype=old"}, | |
292 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
293 | {Opt_type_sun, "ufstype=sun"}, | |
294 | {Opt_type_44bsd, "ufstype=44bsd"}, | |
295 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
296 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
297 | {Opt_type_hp, "ufstype=hp"}, | |
298 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
299 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
300 | {Opt_type_openstep, "ufstype=openstep"}, | |
301 | {Opt_onerror_panic, "onerror=panic"}, | |
302 | {Opt_onerror_lock, "onerror=lock"}, | |
303 | {Opt_onerror_umount, "onerror=umount"}, | |
304 | {Opt_onerror_repair, "onerror=repair"}, | |
305 | {Opt_err, NULL} | |
306 | }; | |
307 | ||
308 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
309 | { | |
310 | char * p; | |
311 | ||
312 | UFSD(("ENTER\n")) | |
313 | ||
314 | if (!options) | |
315 | return 1; | |
316 | ||
317 | while ((p = strsep(&options, ",")) != NULL) { | |
318 | substring_t args[MAX_OPT_ARGS]; | |
319 | int token; | |
320 | if (!*p) | |
321 | continue; | |
322 | ||
323 | token = match_token(p, tokens, args); | |
324 | switch (token) { | |
325 | case Opt_type_old: | |
326 | ufs_clear_opt (*mount_options, UFSTYPE); | |
327 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
328 | break; | |
329 | case Opt_type_sunx86: | |
330 | ufs_clear_opt (*mount_options, UFSTYPE); | |
331 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
332 | break; | |
333 | case Opt_type_sun: | |
334 | ufs_clear_opt (*mount_options, UFSTYPE); | |
335 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
336 | break; | |
337 | case Opt_type_44bsd: | |
338 | ufs_clear_opt (*mount_options, UFSTYPE); | |
339 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
340 | break; | |
341 | case Opt_type_ufs2: | |
342 | ufs_clear_opt(*mount_options, UFSTYPE); | |
343 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
344 | break; | |
345 | case Opt_type_hp: | |
346 | ufs_clear_opt (*mount_options, UFSTYPE); | |
347 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
348 | break; | |
349 | case Opt_type_nextstepcd: | |
350 | ufs_clear_opt (*mount_options, UFSTYPE); | |
351 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
352 | break; | |
353 | case Opt_type_nextstep: | |
354 | ufs_clear_opt (*mount_options, UFSTYPE); | |
355 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
356 | break; | |
357 | case Opt_type_openstep: | |
358 | ufs_clear_opt (*mount_options, UFSTYPE); | |
359 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
360 | break; | |
361 | case Opt_onerror_panic: | |
362 | ufs_clear_opt (*mount_options, ONERROR); | |
363 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
364 | break; | |
365 | case Opt_onerror_lock: | |
366 | ufs_clear_opt (*mount_options, ONERROR); | |
367 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
368 | break; | |
369 | case Opt_onerror_umount: | |
370 | ufs_clear_opt (*mount_options, ONERROR); | |
371 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
372 | break; | |
373 | case Opt_onerror_repair: | |
374 | printk("UFS-fs: Unable to do repair on error, " | |
375 | "will lock lock instead\n"); | |
376 | ufs_clear_opt (*mount_options, ONERROR); | |
377 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
378 | break; | |
379 | default: | |
380 | printk("UFS-fs: Invalid option: \"%s\" " | |
381 | "or missing value\n", p); | |
382 | return 0; | |
383 | } | |
384 | } | |
385 | return 1; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Read on-disk structures associated with cylinder groups | |
390 | */ | |
391 | static int ufs_read_cylinder_structures (struct super_block *sb) { | |
392 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
393 | struct ufs_sb_private_info * uspi; | |
394 | struct ufs_super_block *usb; | |
395 | struct ufs_buffer_head * ubh; | |
396 | unsigned char * base, * space; | |
397 | unsigned size, blks, i; | |
398 | unsigned flags = 0; | |
399 | ||
400 | UFSD(("ENTER\n")) | |
401 | ||
402 | uspi = sbi->s_uspi; | |
403 | ||
404 | usb = (struct ufs_super_block *) | |
405 | ((struct ufs_buffer_head *)uspi)->bh[0]->b_data; | |
406 | ||
407 | flags = UFS_SB(sb)->s_flags; | |
408 | ||
409 | /* | |
410 | * Read cs structures from (usually) first data block | |
411 | * on the device. | |
412 | */ | |
413 | size = uspi->s_cssize; | |
414 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
415 | base = space = kmalloc(size, GFP_KERNEL); | |
416 | if (!base) | |
417 | goto failed; | |
418 | for (i = 0; i < blks; i += uspi->s_fpb) { | |
419 | size = uspi->s_bsize; | |
420 | if (i + uspi->s_fpb > blks) | |
421 | size = (blks - i) * uspi->s_fsize; | |
422 | ||
423 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
424 | ubh = ubh_bread(sb, | |
425 | fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_csaddr) + i, size); | |
426 | if (!ubh) | |
427 | goto failed; | |
428 | ubh_ubhcpymem (space, ubh, size); | |
429 | sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space; | |
430 | } | |
431 | else { | |
432 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); | |
433 | if (!ubh) | |
434 | goto failed; | |
435 | ubh_ubhcpymem(space, ubh, size); | |
436 | sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space; | |
437 | } | |
438 | space += size; | |
439 | ubh_brelse (ubh); | |
440 | ubh = NULL; | |
441 | } | |
442 | ||
443 | /* | |
444 | * Read cylinder group (we read only first fragment from block | |
445 | * at this time) and prepare internal data structures for cg caching. | |
446 | */ | |
447 | if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) | |
448 | goto failed; | |
449 | for (i = 0; i < uspi->s_ncg; i++) | |
450 | sbi->s_ucg[i] = NULL; | |
451 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
452 | sbi->s_ucpi[i] = NULL; | |
453 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
454 | } | |
455 | for (i = 0; i < uspi->s_ncg; i++) { | |
456 | UFSD(("read cg %u\n", i)) | |
457 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) | |
458 | goto failed; | |
459 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
460 | goto failed; | |
461 | #ifdef UFS_SUPER_DEBUG_MORE | |
462 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); | |
463 | #endif | |
464 | } | |
465 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
466 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) | |
467 | goto failed; | |
468 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
469 | } | |
470 | sbi->s_cg_loaded = 0; | |
471 | UFSD(("EXIT\n")) | |
472 | return 1; | |
473 | ||
474 | failed: | |
475 | if (base) kfree (base); | |
476 | if (sbi->s_ucg) { | |
477 | for (i = 0; i < uspi->s_ncg; i++) | |
478 | if (sbi->s_ucg[i]) brelse (sbi->s_ucg[i]); | |
479 | kfree (sbi->s_ucg); | |
480 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
481 | if (sbi->s_ucpi[i]) kfree (sbi->s_ucpi[i]); | |
482 | } | |
483 | UFSD(("EXIT (FAILED)\n")) | |
484 | return 0; | |
485 | } | |
486 | ||
487 | /* | |
488 | * Put on-disk structures associated with cylinder groups and | |
489 | * write them back to disk | |
490 | */ | |
491 | static void ufs_put_cylinder_structures (struct super_block *sb) { | |
492 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
493 | struct ufs_sb_private_info * uspi; | |
494 | struct ufs_buffer_head * ubh; | |
495 | unsigned char * base, * space; | |
496 | unsigned blks, size, i; | |
497 | ||
498 | UFSD(("ENTER\n")) | |
499 | ||
500 | uspi = sbi->s_uspi; | |
501 | ||
502 | size = uspi->s_cssize; | |
503 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
504 | base = space = (char*) sbi->s_csp[0]; | |
505 | for (i = 0; i < blks; i += uspi->s_fpb) { | |
506 | size = uspi->s_bsize; | |
507 | if (i + uspi->s_fpb > blks) | |
508 | size = (blks - i) * uspi->s_fsize; | |
509 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); | |
510 | ubh_memcpyubh (ubh, space, size); | |
511 | space += size; | |
512 | ubh_mark_buffer_uptodate (ubh, 1); | |
513 | ubh_mark_buffer_dirty (ubh); | |
514 | ubh_brelse (ubh); | |
515 | } | |
516 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
517 | ufs_put_cylinder (sb, i); | |
518 | kfree (sbi->s_ucpi[i]); | |
519 | } | |
520 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
521 | kfree (sbi->s_ucpi[i]); | |
522 | for (i = 0; i < uspi->s_ncg; i++) | |
523 | brelse (sbi->s_ucg[i]); | |
524 | kfree (sbi->s_ucg); | |
525 | kfree (base); | |
526 | UFSD(("EXIT\n")) | |
527 | } | |
528 | ||
529 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) | |
530 | { | |
531 | struct ufs_sb_info * sbi; | |
532 | struct ufs_sb_private_info * uspi; | |
533 | struct ufs_super_block_first * usb1; | |
534 | struct ufs_super_block_second * usb2; | |
535 | struct ufs_super_block_third * usb3; | |
536 | struct ufs_super_block *usb; | |
537 | struct ufs_buffer_head * ubh; | |
538 | struct inode *inode; | |
539 | unsigned block_size, super_block_size; | |
540 | unsigned flags; | |
541 | ||
542 | uspi = NULL; | |
543 | ubh = NULL; | |
544 | flags = 0; | |
545 | ||
546 | UFSD(("ENTER\n")) | |
547 | ||
548 | sbi = kmalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); | |
549 | if (!sbi) | |
550 | goto failed_nomem; | |
551 | sb->s_fs_info = sbi; | |
552 | memset(sbi, 0, sizeof(struct ufs_sb_info)); | |
553 | ||
554 | UFSD(("flag %u\n", (int)(sb->s_flags & MS_RDONLY))) | |
555 | ||
556 | #ifndef CONFIG_UFS_FS_WRITE | |
557 | if (!(sb->s_flags & MS_RDONLY)) { | |
558 | printk("ufs was compiled with read-only support, " | |
559 | "can't be mounted as read-write\n"); | |
560 | goto failed; | |
561 | } | |
562 | #endif | |
563 | /* | |
564 | * Set default mount options | |
565 | * Parse mount options | |
566 | */ | |
567 | sbi->s_mount_opt = 0; | |
568 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
569 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
570 | printk("wrong mount options\n"); | |
571 | goto failed; | |
572 | } | |
573 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
574 | if (!silent) | |
575 | printk("You didn't specify the type of your ufs filesystem\n\n" | |
576 | "mount -t ufs -o ufstype=" | |
577 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|netxstep-cd|openstep ...\n\n" | |
578 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " | |
579 | "default is ufstype=old\n"); | |
580 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
581 | } | |
582 | ||
583 | sbi->s_uspi = uspi = | |
584 | kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL); | |
585 | if (!uspi) | |
586 | goto failed; | |
587 | ||
588 | /* Keep 2Gig file limit. Some UFS variants need to override | |
589 | this but as I don't know which I'll let those in the know loosen | |
590 | the rules */ | |
591 | ||
592 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { | |
593 | case UFS_MOUNT_UFSTYPE_44BSD: | |
594 | UFSD(("ufstype=44bsd\n")) | |
595 | uspi->s_fsize = block_size = 512; | |
596 | uspi->s_fmask = ~(512 - 1); | |
597 | uspi->s_fshift = 9; | |
598 | uspi->s_sbsize = super_block_size = 1536; | |
599 | uspi->s_sbbase = 0; | |
600 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
601 | break; | |
602 | case UFS_MOUNT_UFSTYPE_UFS2: | |
603 | UFSD(("ufstype=ufs2\n")) | |
604 | uspi->s_fsize = block_size = 512; | |
605 | uspi->s_fmask = ~(512 - 1); | |
606 | uspi->s_fshift = 9; | |
607 | uspi->s_sbsize = super_block_size = 1536; | |
608 | uspi->s_sbbase = 0; | |
609 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
610 | if (!(sb->s_flags & MS_RDONLY)) { | |
611 | printk(KERN_INFO "ufstype=ufs2 is supported read-only\n"); | |
612 | sb->s_flags |= MS_RDONLY; | |
613 | } | |
614 | break; | |
615 | ||
616 | case UFS_MOUNT_UFSTYPE_SUN: | |
617 | UFSD(("ufstype=sun\n")) | |
618 | uspi->s_fsize = block_size = 1024; | |
619 | uspi->s_fmask = ~(1024 - 1); | |
620 | uspi->s_fshift = 10; | |
621 | uspi->s_sbsize = super_block_size = 2048; | |
622 | uspi->s_sbbase = 0; | |
623 | uspi->s_maxsymlinklen = 56; | |
624 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; | |
625 | break; | |
626 | ||
627 | case UFS_MOUNT_UFSTYPE_SUNx86: | |
628 | UFSD(("ufstype=sunx86\n")) | |
629 | uspi->s_fsize = block_size = 1024; | |
630 | uspi->s_fmask = ~(1024 - 1); | |
631 | uspi->s_fshift = 10; | |
632 | uspi->s_sbsize = super_block_size = 2048; | |
633 | uspi->s_sbbase = 0; | |
634 | uspi->s_maxsymlinklen = 56; | |
635 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; | |
636 | break; | |
637 | ||
638 | case UFS_MOUNT_UFSTYPE_OLD: | |
639 | UFSD(("ufstype=old\n")) | |
640 | uspi->s_fsize = block_size = 1024; | |
641 | uspi->s_fmask = ~(1024 - 1); | |
642 | uspi->s_fshift = 10; | |
643 | uspi->s_sbsize = super_block_size = 2048; | |
644 | uspi->s_sbbase = 0; | |
645 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
646 | if (!(sb->s_flags & MS_RDONLY)) { | |
647 | if (!silent) | |
648 | printk(KERN_INFO "ufstype=old is supported read-only\n"); | |
649 | sb->s_flags |= MS_RDONLY; | |
650 | } | |
651 | break; | |
652 | ||
653 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
654 | UFSD(("ufstype=nextstep\n")) | |
655 | uspi->s_fsize = block_size = 1024; | |
656 | uspi->s_fmask = ~(1024 - 1); | |
657 | uspi->s_fshift = 10; | |
658 | uspi->s_sbsize = super_block_size = 2048; | |
659 | uspi->s_sbbase = 0; | |
660 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
661 | if (!(sb->s_flags & MS_RDONLY)) { | |
662 | if (!silent) | |
663 | printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); | |
664 | sb->s_flags |= MS_RDONLY; | |
665 | } | |
666 | break; | |
667 | ||
668 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
669 | UFSD(("ufstype=nextstep-cd\n")) | |
670 | uspi->s_fsize = block_size = 2048; | |
671 | uspi->s_fmask = ~(2048 - 1); | |
672 | uspi->s_fshift = 11; | |
673 | uspi->s_sbsize = super_block_size = 2048; | |
674 | uspi->s_sbbase = 0; | |
675 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
676 | if (!(sb->s_flags & MS_RDONLY)) { | |
677 | if (!silent) | |
678 | printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); | |
679 | sb->s_flags |= MS_RDONLY; | |
680 | } | |
681 | break; | |
682 | ||
683 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
684 | UFSD(("ufstype=openstep\n")) | |
685 | uspi->s_fsize = block_size = 1024; | |
686 | uspi->s_fmask = ~(1024 - 1); | |
687 | uspi->s_fshift = 10; | |
688 | uspi->s_sbsize = super_block_size = 2048; | |
689 | uspi->s_sbbase = 0; | |
690 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
691 | if (!(sb->s_flags & MS_RDONLY)) { | |
692 | if (!silent) | |
693 | printk(KERN_INFO "ufstype=openstep is supported read-only\n"); | |
694 | sb->s_flags |= MS_RDONLY; | |
695 | } | |
696 | break; | |
697 | ||
698 | case UFS_MOUNT_UFSTYPE_HP: | |
699 | UFSD(("ufstype=hp\n")) | |
700 | uspi->s_fsize = block_size = 1024; | |
701 | uspi->s_fmask = ~(1024 - 1); | |
702 | uspi->s_fshift = 10; | |
703 | uspi->s_sbsize = super_block_size = 2048; | |
704 | uspi->s_sbbase = 0; | |
705 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
706 | if (!(sb->s_flags & MS_RDONLY)) { | |
707 | if (!silent) | |
708 | printk(KERN_INFO "ufstype=hp is supported read-only\n"); | |
709 | sb->s_flags |= MS_RDONLY; | |
710 | } | |
711 | break; | |
712 | default: | |
713 | if (!silent) | |
714 | printk("unknown ufstype\n"); | |
715 | goto failed; | |
716 | } | |
717 | ||
718 | again: | |
719 | if (!sb_set_blocksize(sb, block_size)) { | |
720 | printk(KERN_ERR "UFS: failed to set blocksize\n"); | |
721 | goto failed; | |
722 | } | |
723 | ||
724 | /* | |
725 | * read ufs super block from device | |
726 | */ | |
727 | if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
728 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + SBLOCK_UFS2/block_size, super_block_size); | |
729 | } | |
730 | else { | |
731 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + UFS_SBLOCK/block_size, super_block_size); | |
732 | } | |
733 | if (!ubh) | |
734 | goto failed; | |
735 | ||
736 | ||
737 | usb1 = ubh_get_usb_first(USPI_UBH); | |
738 | usb2 = ubh_get_usb_second(USPI_UBH); | |
739 | usb3 = ubh_get_usb_third(USPI_UBH); | |
740 | usb = (struct ufs_super_block *) | |
741 | ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ; | |
742 | ||
743 | /* | |
744 | * Check ufs magic number | |
745 | */ | |
746 | sbi->s_bytesex = BYTESEX_LE; | |
747 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
748 | case UFS_MAGIC: | |
749 | case UFS2_MAGIC: | |
750 | case UFS_MAGIC_LFN: | |
751 | case UFS_MAGIC_FEA: | |
752 | case UFS_MAGIC_4GB: | |
753 | goto magic_found; | |
754 | } | |
755 | sbi->s_bytesex = BYTESEX_BE; | |
756 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
757 | case UFS_MAGIC: | |
758 | case UFS2_MAGIC: | |
759 | case UFS_MAGIC_LFN: | |
760 | case UFS_MAGIC_FEA: | |
761 | case UFS_MAGIC_4GB: | |
762 | goto magic_found; | |
763 | } | |
764 | ||
765 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
766 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
767 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
768 | && uspi->s_sbbase < 256) { | |
769 | ubh_brelse_uspi(uspi); | |
770 | ubh = NULL; | |
771 | uspi->s_sbbase += 8; | |
772 | goto again; | |
773 | } | |
774 | if (!silent) | |
775 | printk("ufs_read_super: bad magic number\n"); | |
776 | goto failed; | |
777 | ||
778 | magic_found: | |
779 | /* | |
780 | * Check block and fragment sizes | |
781 | */ | |
782 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
783 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
784 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
785 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
786 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
787 | ||
788 | if (uspi->s_fsize & (uspi->s_fsize - 1)) { | |
789 | printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", | |
790 | uspi->s_fsize); | |
791 | goto failed; | |
792 | } | |
793 | if (uspi->s_fsize < 512) { | |
794 | printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", | |
795 | uspi->s_fsize); | |
796 | goto failed; | |
797 | } | |
798 | if (uspi->s_fsize > 4096) { | |
799 | printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", | |
800 | uspi->s_fsize); | |
801 | goto failed; | |
802 | } | |
803 | if (uspi->s_bsize & (uspi->s_bsize - 1)) { | |
804 | printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", | |
805 | uspi->s_bsize); | |
806 | goto failed; | |
807 | } | |
808 | if (uspi->s_bsize < 4096) { | |
809 | printk(KERN_ERR "ufs_read_super: block size %u is too small\n", | |
810 | uspi->s_bsize); | |
811 | goto failed; | |
812 | } | |
813 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
814 | printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", | |
815 | uspi->s_bsize / uspi->s_fsize); | |
816 | goto failed; | |
817 | } | |
818 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
819 | ubh_brelse_uspi(uspi); | |
820 | ubh = NULL; | |
821 | block_size = uspi->s_fsize; | |
822 | super_block_size = uspi->s_sbsize; | |
823 | UFSD(("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size)) | |
824 | goto again; | |
825 | } | |
826 | ||
827 | #ifdef UFS_SUPER_DEBUG_MORE | |
828 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) | |
829 | ufs2_print_super_stuff(sb,usb); | |
830 | else | |
831 | ufs_print_super_stuff(sb, usb1, usb2, usb3); | |
832 | #endif | |
833 | ||
834 | /* | |
835 | * Check, if file system was correctly unmounted. | |
836 | * If not, make it read only. | |
837 | */ | |
838 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || | |
839 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
840 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
841 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
842 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
843 | switch(usb1->fs_clean) { | |
844 | case UFS_FSCLEAN: | |
845 | UFSD(("fs is clean\n")) | |
846 | break; | |
847 | case UFS_FSSTABLE: | |
848 | UFSD(("fs is stable\n")) | |
849 | break; | |
850 | case UFS_FSOSF1: | |
851 | UFSD(("fs is DEC OSF/1\n")) | |
852 | break; | |
853 | case UFS_FSACTIVE: | |
854 | printk("ufs_read_super: fs is active\n"); | |
855 | sb->s_flags |= MS_RDONLY; | |
856 | break; | |
857 | case UFS_FSBAD: | |
858 | printk("ufs_read_super: fs is bad\n"); | |
859 | sb->s_flags |= MS_RDONLY; | |
860 | break; | |
861 | default: | |
862 | printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); | |
863 | sb->s_flags |= MS_RDONLY; | |
864 | break; | |
865 | } | |
866 | } | |
867 | else { | |
868 | printk("ufs_read_super: fs needs fsck\n"); | |
869 | sb->s_flags |= MS_RDONLY; | |
870 | } | |
871 | ||
872 | /* | |
873 | * Read ufs_super_block into internal data structures | |
874 | */ | |
875 | sb->s_op = &ufs_super_ops; | |
876 | sb->dq_op = NULL; /***/ | |
877 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); | |
878 | ||
879 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
880 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
881 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
882 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
883 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
884 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
885 | ||
886 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
887 | uspi->s_u2_size = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size); | |
888 | uspi->s_u2_dsize = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize); | |
889 | } | |
890 | else { | |
891 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); | |
892 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
893 | } | |
894 | ||
895 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
896 | /* s_bsize already set */ | |
897 | /* s_fsize already set */ | |
898 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
899 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
900 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
901 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
902 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
903 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
904 | UFSD(("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, | |
905 | uspi->s_fshift)); | |
906 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); | |
907 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
908 | /* s_sbsize already set */ | |
909 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
910 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
911 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
912 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
913 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
914 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
915 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
916 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
917 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
918 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); | |
919 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
920 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
921 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
922 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
923 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
924 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
925 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_cpc); | |
926 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize); | |
927 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); | |
928 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
929 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
930 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); | |
931 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
932 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
933 | ||
934 | /* | |
935 | * Compute another frequently used values | |
936 | */ | |
937 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
938 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
939 | uspi->s_apbshift = uspi->s_bshift - 3; | |
940 | } | |
941 | else { | |
942 | uspi->s_apbshift = uspi->s_bshift - 2; | |
943 | } | |
944 | uspi->s_2apbshift = uspi->s_apbshift * 2; | |
945 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
946 | uspi->s_apb = 1 << uspi->s_apbshift; | |
947 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
948 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
949 | uspi->s_apbmask = uspi->s_apb - 1; | |
950 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
951 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
952 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
953 | uspi->s_bpf = uspi->s_fsize << 3; | |
954 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
955 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
956 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == | |
957 | UFS_MOUNT_UFSTYPE_44BSD) | |
958 | uspi->s_maxsymlinklen = | |
959 | fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_maxsymlinklen); | |
960 | ||
961 | sbi->s_flags = flags; | |
962 | ||
963 | inode = iget(sb, UFS_ROOTINO); | |
964 | if (!inode || is_bad_inode(inode)) | |
965 | goto failed; | |
966 | sb->s_root = d_alloc_root(inode); | |
967 | if (!sb->s_root) | |
968 | goto dalloc_failed; | |
969 | ||
970 | ||
971 | /* | |
972 | * Read cylinder group structures | |
973 | */ | |
974 | if (!(sb->s_flags & MS_RDONLY)) | |
975 | if (!ufs_read_cylinder_structures(sb)) | |
976 | goto failed; | |
977 | ||
978 | UFSD(("EXIT\n")) | |
979 | return 0; | |
980 | ||
981 | dalloc_failed: | |
982 | iput(inode); | |
983 | failed: | |
984 | if (ubh) ubh_brelse_uspi (uspi); | |
985 | if (uspi) kfree (uspi); | |
986 | if (sbi) kfree(sbi); | |
987 | sb->s_fs_info = NULL; | |
988 | UFSD(("EXIT (FAILED)\n")) | |
989 | return -EINVAL; | |
990 | ||
991 | failed_nomem: | |
992 | UFSD(("EXIT (NOMEM)\n")) | |
993 | return -ENOMEM; | |
994 | } | |
995 | ||
996 | static void ufs_write_super (struct super_block *sb) { | |
997 | struct ufs_sb_private_info * uspi; | |
998 | struct ufs_super_block_first * usb1; | |
999 | struct ufs_super_block_third * usb3; | |
1000 | unsigned flags; | |
1001 | ||
1002 | lock_kernel(); | |
1003 | ||
1004 | UFSD(("ENTER\n")) | |
1005 | flags = UFS_SB(sb)->s_flags; | |
1006 | uspi = UFS_SB(sb)->s_uspi; | |
1007 | usb1 = ubh_get_usb_first(USPI_UBH); | |
1008 | usb3 = ubh_get_usb_third(USPI_UBH); | |
1009 | ||
1010 | if (!(sb->s_flags & MS_RDONLY)) { | |
1011 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
1012 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
1013 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
1014 | ufs_set_fs_state(sb, usb1, usb3, | |
1015 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
1016 | ubh_mark_buffer_dirty (USPI_UBH); | |
1017 | } | |
1018 | sb->s_dirt = 0; | |
1019 | UFSD(("EXIT\n")) | |
1020 | unlock_kernel(); | |
1021 | } | |
1022 | ||
1023 | static void ufs_put_super (struct super_block *sb) | |
1024 | { | |
1025 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
1026 | ||
1027 | UFSD(("ENTER\n")) | |
1028 | ||
1029 | if (!(sb->s_flags & MS_RDONLY)) | |
1030 | ufs_put_cylinder_structures (sb); | |
1031 | ||
1032 | ubh_brelse_uspi (sbi->s_uspi); | |
1033 | kfree (sbi->s_uspi); | |
1034 | kfree (sbi); | |
1035 | sb->s_fs_info = NULL; | |
1036 | return; | |
1037 | } | |
1038 | ||
1039 | ||
1040 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) | |
1041 | { | |
1042 | struct ufs_sb_private_info * uspi; | |
1043 | struct ufs_super_block_first * usb1; | |
1044 | struct ufs_super_block_third * usb3; | |
1045 | unsigned new_mount_opt, ufstype; | |
1046 | unsigned flags; | |
1047 | ||
1048 | uspi = UFS_SB(sb)->s_uspi; | |
1049 | flags = UFS_SB(sb)->s_flags; | |
1050 | usb1 = ubh_get_usb_first(USPI_UBH); | |
1051 | usb3 = ubh_get_usb_third(USPI_UBH); | |
1052 | ||
1053 | /* | |
1054 | * Allow the "check" option to be passed as a remount option. | |
1055 | * It is not possible to change ufstype option during remount | |
1056 | */ | |
1057 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1058 | new_mount_opt = 0; | |
1059 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
1060 | if (!ufs_parse_options (data, &new_mount_opt)) | |
1061 | return -EINVAL; | |
1062 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
1063 | new_mount_opt |= ufstype; | |
1064 | } | |
1065 | else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { | |
1066 | printk("ufstype can't be changed during remount\n"); | |
1067 | return -EINVAL; | |
1068 | } | |
1069 | ||
1070 | if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { | |
1071 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * fs was mouted as rw, remounting ro | |
1077 | */ | |
1078 | if (*mount_flags & MS_RDONLY) { | |
1079 | ufs_put_cylinder_structures(sb); | |
1080 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
1081 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
1082 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
1083 | ufs_set_fs_state(sb, usb1, usb3, | |
1084 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
1085 | ubh_mark_buffer_dirty (USPI_UBH); | |
1086 | sb->s_dirt = 0; | |
1087 | sb->s_flags |= MS_RDONLY; | |
1088 | } | |
1089 | /* | |
1090 | * fs was mounted as ro, remounting rw | |
1091 | */ | |
1092 | else { | |
1093 | #ifndef CONFIG_UFS_FS_WRITE | |
1094 | printk("ufs was compiled with read-only support, " | |
1095 | "can't be mounted as read-write\n"); | |
1096 | return -EINVAL; | |
1097 | #else | |
1098 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
1099 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && | |
1100 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86) { | |
1101 | printk("this ufstype is read-only supported\n"); | |
1102 | return -EINVAL; | |
1103 | } | |
1104 | if (!ufs_read_cylinder_structures (sb)) { | |
1105 | printk("failed during remounting\n"); | |
1106 | return -EPERM; | |
1107 | } | |
1108 | sb->s_flags &= ~MS_RDONLY; | |
1109 | #endif | |
1110 | } | |
1111 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | static int ufs_statfs (struct super_block *sb, struct kstatfs *buf) | |
1116 | { | |
1117 | struct ufs_sb_private_info * uspi; | |
1118 | struct ufs_super_block_first * usb1; | |
1119 | struct ufs_super_block * usb; | |
1120 | unsigned flags = 0; | |
1121 | ||
1122 | lock_kernel(); | |
1123 | ||
1124 | uspi = UFS_SB(sb)->s_uspi; | |
1125 | usb1 = ubh_get_usb_first (USPI_UBH); | |
1126 | usb = (struct ufs_super_block *) | |
1127 | ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ; | |
1128 | ||
1129 | flags = UFS_SB(sb)->s_flags; | |
1130 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
1131 | buf->f_type = UFS2_MAGIC; | |
1132 | buf->f_blocks = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize); | |
1133 | buf->f_bfree = ufs_blkstofrags(fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)) + | |
1134 | fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nffree); | |
1135 | buf->f_ffree = fs64_to_cpu(sb, | |
1136 | usb->fs_u11.fs_u2.fs_cstotal.cs_nifree); | |
1137 | } | |
1138 | else { | |
1139 | buf->f_type = UFS_MAGIC; | |
1140 | buf->f_blocks = uspi->s_dsize; | |
1141 | buf->f_bfree = ufs_blkstofrags(fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)) + | |
1142 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
1143 | buf->f_ffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
1144 | } | |
1145 | buf->f_bsize = sb->s_blocksize; | |
1146 | buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) | |
1147 | ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; | |
1148 | buf->f_files = uspi->s_ncg * uspi->s_ipg; | |
1149 | buf->f_namelen = UFS_MAXNAMLEN; | |
1150 | ||
1151 | unlock_kernel(); | |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | static kmem_cache_t * ufs_inode_cachep; | |
1157 | ||
1158 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1159 | { | |
1160 | struct ufs_inode_info *ei; | |
1161 | ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, SLAB_KERNEL); | |
1162 | if (!ei) | |
1163 | return NULL; | |
1164 | ei->vfs_inode.i_version = 1; | |
1165 | return &ei->vfs_inode; | |
1166 | } | |
1167 | ||
1168 | static void ufs_destroy_inode(struct inode *inode) | |
1169 | { | |
1170 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); | |
1171 | } | |
1172 | ||
1173 | static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) | |
1174 | { | |
1175 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1176 | ||
1177 | if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == | |
1178 | SLAB_CTOR_CONSTRUCTOR) | |
1179 | inode_init_once(&ei->vfs_inode); | |
1180 | } | |
1181 | ||
1182 | static int init_inodecache(void) | |
1183 | { | |
1184 | ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", | |
1185 | sizeof(struct ufs_inode_info), | |
1186 | 0, SLAB_RECLAIM_ACCOUNT, | |
1187 | init_once, NULL); | |
1188 | if (ufs_inode_cachep == NULL) | |
1189 | return -ENOMEM; | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static void destroy_inodecache(void) | |
1194 | { | |
1195 | if (kmem_cache_destroy(ufs_inode_cachep)) | |
1196 | printk(KERN_INFO "ufs_inode_cache: not all structures were freed\n"); | |
1197 | } | |
1198 | ||
1199 | #ifdef CONFIG_QUOTA | |
1200 | static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t); | |
1201 | static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t); | |
1202 | #endif | |
1203 | ||
1204 | static struct super_operations ufs_super_ops = { | |
1205 | .alloc_inode = ufs_alloc_inode, | |
1206 | .destroy_inode = ufs_destroy_inode, | |
1207 | .read_inode = ufs_read_inode, | |
1208 | .write_inode = ufs_write_inode, | |
1209 | .delete_inode = ufs_delete_inode, | |
1210 | .put_super = ufs_put_super, | |
1211 | .write_super = ufs_write_super, | |
1212 | .statfs = ufs_statfs, | |
1213 | .remount_fs = ufs_remount, | |
1214 | #ifdef CONFIG_QUOTA | |
1215 | .quota_read = ufs_quota_read, | |
1216 | .quota_write = ufs_quota_write, | |
1217 | #endif | |
1218 | }; | |
1219 | ||
1220 | #ifdef CONFIG_QUOTA | |
1221 | ||
1222 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
1223 | * acquiring the locks... As quota files are never truncated and quota code | |
1224 | * itself serializes the operations (and noone else should touch the files) | |
1225 | * we don't have to be afraid of races */ | |
1226 | static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data, | |
1227 | size_t len, loff_t off) | |
1228 | { | |
1229 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1230 | sector_t blk = off >> sb->s_blocksize_bits; | |
1231 | int err = 0; | |
1232 | int offset = off & (sb->s_blocksize - 1); | |
1233 | int tocopy; | |
1234 | size_t toread; | |
1235 | struct buffer_head *bh; | |
1236 | loff_t i_size = i_size_read(inode); | |
1237 | ||
1238 | if (off > i_size) | |
1239 | return 0; | |
1240 | if (off+len > i_size) | |
1241 | len = i_size-off; | |
1242 | toread = len; | |
1243 | while (toread > 0) { | |
1244 | tocopy = sb->s_blocksize - offset < toread ? | |
1245 | sb->s_blocksize - offset : toread; | |
1246 | ||
1247 | bh = ufs_bread(inode, blk, 0, &err); | |
1248 | if (err) | |
1249 | return err; | |
1250 | if (!bh) /* A hole? */ | |
1251 | memset(data, 0, tocopy); | |
1252 | else { | |
1253 | memcpy(data, bh->b_data+offset, tocopy); | |
1254 | brelse(bh); | |
1255 | } | |
1256 | offset = 0; | |
1257 | toread -= tocopy; | |
1258 | data += tocopy; | |
1259 | blk++; | |
1260 | } | |
1261 | return len; | |
1262 | } | |
1263 | ||
1264 | /* Write to quotafile */ | |
1265 | static ssize_t ufs_quota_write(struct super_block *sb, int type, | |
1266 | const char *data, size_t len, loff_t off) | |
1267 | { | |
1268 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1269 | sector_t blk = off >> sb->s_blocksize_bits; | |
1270 | int err = 0; | |
1271 | int offset = off & (sb->s_blocksize - 1); | |
1272 | int tocopy; | |
1273 | size_t towrite = len; | |
1274 | struct buffer_head *bh; | |
1275 | ||
1276 | down(&inode->i_sem); | |
1277 | while (towrite > 0) { | |
1278 | tocopy = sb->s_blocksize - offset < towrite ? | |
1279 | sb->s_blocksize - offset : towrite; | |
1280 | ||
1281 | bh = ufs_bread(inode, blk, 1, &err); | |
1282 | if (!bh) | |
1283 | goto out; | |
1284 | lock_buffer(bh); | |
1285 | memcpy(bh->b_data+offset, data, tocopy); | |
1286 | flush_dcache_page(bh->b_page); | |
1287 | set_buffer_uptodate(bh); | |
1288 | mark_buffer_dirty(bh); | |
1289 | unlock_buffer(bh); | |
1290 | brelse(bh); | |
1291 | offset = 0; | |
1292 | towrite -= tocopy; | |
1293 | data += tocopy; | |
1294 | blk++; | |
1295 | } | |
1296 | out: | |
1297 | if (len == towrite) | |
1298 | return err; | |
1299 | if (inode->i_size < off+len-towrite) | |
1300 | i_size_write(inode, off+len-towrite); | |
1301 | inode->i_version++; | |
1302 | inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; | |
1303 | mark_inode_dirty(inode); | |
1304 | up(&inode->i_sem); | |
1305 | return len - towrite; | |
1306 | } | |
1307 | ||
1308 | #endif | |
1309 | ||
1310 | static struct super_block *ufs_get_sb(struct file_system_type *fs_type, | |
1311 | int flags, const char *dev_name, void *data) | |
1312 | { | |
1313 | return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super); | |
1314 | } | |
1315 | ||
1316 | static struct file_system_type ufs_fs_type = { | |
1317 | .owner = THIS_MODULE, | |
1318 | .name = "ufs", | |
1319 | .get_sb = ufs_get_sb, | |
1320 | .kill_sb = kill_block_super, | |
1321 | .fs_flags = FS_REQUIRES_DEV, | |
1322 | }; | |
1323 | ||
1324 | static int __init init_ufs_fs(void) | |
1325 | { | |
1326 | int err = init_inodecache(); | |
1327 | if (err) | |
1328 | goto out1; | |
1329 | err = register_filesystem(&ufs_fs_type); | |
1330 | if (err) | |
1331 | goto out; | |
1332 | return 0; | |
1333 | out: | |
1334 | destroy_inodecache(); | |
1335 | out1: | |
1336 | return err; | |
1337 | } | |
1338 | ||
1339 | static void __exit exit_ufs_fs(void) | |
1340 | { | |
1341 | unregister_filesystem(&ufs_fs_type); | |
1342 | destroy_inodecache(); | |
1343 | } | |
1344 | ||
1345 | module_init(init_ufs_fs) | |
1346 | module_exit(exit_ufs_fs) | |
1347 | MODULE_LICENSE("GPL"); |