Commit | Line | Data |
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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 | ||
abf5d15f | 93 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
94 | /* |
95 | * Print contents of ufs_super_block, useful for debugging | |
96 | */ | |
97 | void ufs_print_super_stuff(struct super_block *sb, | |
98 | struct ufs_super_block_first * usb1, | |
99 | struct ufs_super_block_second * usb2, | |
100 | struct ufs_super_block_third * usb3) | |
101 | { | |
102 | printk("ufs_print_super_stuff\n"); | |
103 | printk("size of usb: %u\n", sizeof(struct ufs_super_block)); | |
104 | printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb3->fs_magic)); | |
105 | printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); | |
106 | printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
107 | printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
108 | printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
109 | printk(" cgoffset: %u\n", fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
110 | printk(" ~cgmask: 0x%x\n", ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
111 | printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
112 | printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
113 | printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
114 | printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
115 | printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
116 | printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
117 | printk(" fragshift: %u\n", fs32_to_cpu(sb, usb1->fs_fragshift)); | |
118 | printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
119 | printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
120 | printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
121 | printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
122 | printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
123 | printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
124 | printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
125 | printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
126 | printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
127 | printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
128 | printk(" fstodb: %u\n", fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
129 | printk(" contigsumsize: %d\n", fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize)); | |
130 | printk(" postblformat: %u\n", fs32_to_cpu(sb, usb3->fs_postblformat)); | |
131 | printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
132 | printk(" ndir %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
133 | printk(" nifree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
134 | printk(" nbfree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
135 | printk(" nffree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
136 | printk("\n"); | |
137 | } | |
138 | ||
139 | /* | |
140 | * Print contents of ufs2 ufs_super_block, useful for debugging | |
141 | */ | |
142 | void ufs2_print_super_stuff( | |
143 | struct super_block *sb, | |
144 | struct ufs_super_block *usb) | |
145 | { | |
146 | printk("ufs_print_super_stuff\n"); | |
147 | printk("size of usb: %u\n", sizeof(struct ufs_super_block)); | |
148 | printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb->fs_magic)); | |
abf5d15f ED |
149 | printk(" fs_size: %llu\n", |
150 | (unsigned long long)fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size)); | |
151 | printk(" fs_dsize: %llu\n", | |
152 | (unsigned long long)fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize)); | |
153 | printk(" bsize: %u\n", fs32_to_cpu(sb, usb->fs_bsize)); | |
154 | printk(" fsize: %u\n", fs32_to_cpu(sb, usb->fs_fsize)); | |
1da177e4 LT |
155 | printk(" fs_volname: %s\n", usb->fs_u11.fs_u2.fs_volname); |
156 | printk(" fs_fsmnt: %s\n", usb->fs_u11.fs_u2.fs_fsmnt); | |
abf5d15f ED |
157 | printk(" fs_sblockloc: %llu\n", |
158 | (unsigned long long)fs64_to_cpu(sb, | |
159 | usb->fs_u11.fs_u2.fs_sblockloc)); | |
160 | printk(" cs_ndir(No of dirs): %llu\n", | |
161 | (unsigned long long)fs64_to_cpu(sb, | |
162 | usb->fs_u11.fs_u2.fs_cstotal.cs_ndir)); | |
163 | printk(" cs_nbfree(No of free blocks): %llu\n", | |
164 | (unsigned long long)fs64_to_cpu(sb, | |
165 | usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)); | |
1da177e4 LT |
166 | printk("\n"); |
167 | } | |
168 | ||
169 | /* | |
170 | * Print contents of ufs_cylinder_group, useful for debugging | |
171 | */ | |
172 | void ufs_print_cylinder_stuff(struct super_block *sb, struct ufs_cylinder_group *cg) | |
173 | { | |
174 | printk("\nufs_print_cylinder_stuff\n"); | |
175 | printk("size of ucg: %u\n", sizeof(struct ufs_cylinder_group)); | |
176 | printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); | |
177 | printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
178 | printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
179 | printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
180 | printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
181 | printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
182 | printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
183 | printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
184 | printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
185 | printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
186 | printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
187 | printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
188 | printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
189 | printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
190 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), | |
191 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
192 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
193 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
194 | printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); | |
195 | printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
196 | printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
197 | printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
198 | printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
199 | printk(" clustersumoff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
200 | printk(" clusteroff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
201 | printk(" nclusterblks %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
202 | printk("\n"); | |
203 | } | |
abf5d15f | 204 | #endif /* CONFIG_UFS_DEBUG */ |
1da177e4 LT |
205 | |
206 | static struct super_operations ufs_super_ops; | |
207 | ||
208 | static char error_buf[1024]; | |
209 | ||
210 | void ufs_error (struct super_block * sb, const char * function, | |
211 | const char * fmt, ...) | |
212 | { | |
213 | struct ufs_sb_private_info * uspi; | |
214 | struct ufs_super_block_first * usb1; | |
215 | va_list args; | |
216 | ||
217 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 218 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
219 | |
220 | if (!(sb->s_flags & MS_RDONLY)) { | |
221 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 222 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
1da177e4 LT |
223 | sb->s_dirt = 1; |
224 | sb->s_flags |= MS_RDONLY; | |
225 | } | |
226 | va_start (args, fmt); | |
227 | vsprintf (error_buf, fmt, args); | |
228 | va_end (args); | |
229 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { | |
230 | case UFS_MOUNT_ONERROR_PANIC: | |
231 | panic ("UFS-fs panic (device %s): %s: %s\n", | |
232 | sb->s_id, function, error_buf); | |
233 | ||
234 | case UFS_MOUNT_ONERROR_LOCK: | |
235 | case UFS_MOUNT_ONERROR_UMOUNT: | |
236 | case UFS_MOUNT_ONERROR_REPAIR: | |
237 | printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", | |
238 | sb->s_id, function, error_buf); | |
239 | } | |
240 | } | |
241 | ||
242 | void ufs_panic (struct super_block * sb, const char * function, | |
243 | const char * fmt, ...) | |
244 | { | |
245 | struct ufs_sb_private_info * uspi; | |
246 | struct ufs_super_block_first * usb1; | |
247 | va_list args; | |
248 | ||
249 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 250 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
251 | |
252 | if (!(sb->s_flags & MS_RDONLY)) { | |
253 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 254 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
1da177e4 LT |
255 | sb->s_dirt = 1; |
256 | } | |
257 | va_start (args, fmt); | |
258 | vsprintf (error_buf, fmt, args); | |
259 | va_end (args); | |
260 | sb->s_flags |= MS_RDONLY; | |
261 | printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", | |
262 | sb->s_id, function, error_buf); | |
263 | } | |
264 | ||
265 | void ufs_warning (struct super_block * sb, const char * function, | |
266 | const char * fmt, ...) | |
267 | { | |
268 | va_list args; | |
269 | ||
270 | va_start (args, fmt); | |
271 | vsprintf (error_buf, fmt, args); | |
272 | va_end (args); | |
273 | printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", | |
274 | sb->s_id, function, error_buf); | |
275 | } | |
276 | ||
277 | enum { | |
278 | Opt_type_old, Opt_type_sunx86, Opt_type_sun, Opt_type_44bsd, | |
279 | Opt_type_ufs2, Opt_type_hp, Opt_type_nextstepcd, Opt_type_nextstep, | |
280 | Opt_type_openstep, Opt_onerror_panic, Opt_onerror_lock, | |
281 | Opt_onerror_umount, Opt_onerror_repair, Opt_err | |
282 | }; | |
283 | ||
284 | static match_table_t tokens = { | |
285 | {Opt_type_old, "ufstype=old"}, | |
286 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
287 | {Opt_type_sun, "ufstype=sun"}, | |
288 | {Opt_type_44bsd, "ufstype=44bsd"}, | |
289 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
290 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
291 | {Opt_type_hp, "ufstype=hp"}, | |
292 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
293 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
294 | {Opt_type_openstep, "ufstype=openstep"}, | |
295 | {Opt_onerror_panic, "onerror=panic"}, | |
296 | {Opt_onerror_lock, "onerror=lock"}, | |
297 | {Opt_onerror_umount, "onerror=umount"}, | |
298 | {Opt_onerror_repair, "onerror=repair"}, | |
299 | {Opt_err, NULL} | |
300 | }; | |
301 | ||
302 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
303 | { | |
304 | char * p; | |
305 | ||
abf5d15f | 306 | UFSD("ENTER\n"); |
1da177e4 LT |
307 | |
308 | if (!options) | |
309 | return 1; | |
310 | ||
311 | while ((p = strsep(&options, ",")) != NULL) { | |
312 | substring_t args[MAX_OPT_ARGS]; | |
313 | int token; | |
314 | if (!*p) | |
315 | continue; | |
316 | ||
317 | token = match_token(p, tokens, args); | |
318 | switch (token) { | |
319 | case Opt_type_old: | |
320 | ufs_clear_opt (*mount_options, UFSTYPE); | |
321 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
322 | break; | |
323 | case Opt_type_sunx86: | |
324 | ufs_clear_opt (*mount_options, UFSTYPE); | |
325 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
326 | break; | |
327 | case Opt_type_sun: | |
328 | ufs_clear_opt (*mount_options, UFSTYPE); | |
329 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
330 | break; | |
331 | case Opt_type_44bsd: | |
332 | ufs_clear_opt (*mount_options, UFSTYPE); | |
333 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
334 | break; | |
335 | case Opt_type_ufs2: | |
336 | ufs_clear_opt(*mount_options, UFSTYPE); | |
337 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
338 | break; | |
339 | case Opt_type_hp: | |
340 | ufs_clear_opt (*mount_options, UFSTYPE); | |
341 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
342 | break; | |
343 | case Opt_type_nextstepcd: | |
344 | ufs_clear_opt (*mount_options, UFSTYPE); | |
345 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
346 | break; | |
347 | case Opt_type_nextstep: | |
348 | ufs_clear_opt (*mount_options, UFSTYPE); | |
349 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
350 | break; | |
351 | case Opt_type_openstep: | |
352 | ufs_clear_opt (*mount_options, UFSTYPE); | |
353 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
354 | break; | |
355 | case Opt_onerror_panic: | |
356 | ufs_clear_opt (*mount_options, ONERROR); | |
357 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
358 | break; | |
359 | case Opt_onerror_lock: | |
360 | ufs_clear_opt (*mount_options, ONERROR); | |
361 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
362 | break; | |
363 | case Opt_onerror_umount: | |
364 | ufs_clear_opt (*mount_options, ONERROR); | |
365 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
366 | break; | |
367 | case Opt_onerror_repair: | |
368 | printk("UFS-fs: Unable to do repair on error, " | |
369 | "will lock lock instead\n"); | |
370 | ufs_clear_opt (*mount_options, ONERROR); | |
371 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
372 | break; | |
373 | default: | |
374 | printk("UFS-fs: Invalid option: \"%s\" " | |
375 | "or missing value\n", p); | |
376 | return 0; | |
377 | } | |
378 | } | |
379 | return 1; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Read on-disk structures associated with cylinder groups | |
384 | */ | |
e295cfcb ED |
385 | static int ufs_read_cylinder_structures (struct super_block *sb) |
386 | { | |
1da177e4 LT |
387 | struct ufs_sb_info * sbi = UFS_SB(sb); |
388 | struct ufs_sb_private_info * uspi; | |
389 | struct ufs_super_block *usb; | |
390 | struct ufs_buffer_head * ubh; | |
391 | unsigned char * base, * space; | |
392 | unsigned size, blks, i; | |
393 | unsigned flags = 0; | |
394 | ||
abf5d15f | 395 | UFSD("ENTER\n"); |
1da177e4 LT |
396 | |
397 | uspi = sbi->s_uspi; | |
398 | ||
399 | usb = (struct ufs_super_block *) | |
400 | ((struct ufs_buffer_head *)uspi)->bh[0]->b_data; | |
401 | ||
402 | flags = UFS_SB(sb)->s_flags; | |
403 | ||
404 | /* | |
405 | * Read cs structures from (usually) first data block | |
406 | * on the device. | |
407 | */ | |
408 | size = uspi->s_cssize; | |
409 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
410 | base = space = kmalloc(size, GFP_KERNEL); | |
411 | if (!base) | |
412 | goto failed; | |
e295cfcb | 413 | sbi->s_csp = (struct ufs_csum *)space; |
1da177e4 LT |
414 | for (i = 0; i < blks; i += uspi->s_fpb) { |
415 | size = uspi->s_bsize; | |
416 | if (i + uspi->s_fpb > blks) | |
417 | size = (blks - i) * uspi->s_fsize; | |
418 | ||
7b4ee73e | 419 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 LT |
420 | ubh = ubh_bread(sb, |
421 | fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_csaddr) + i, size); | |
7b4ee73e | 422 | else |
1da177e4 | 423 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
7b4ee73e E |
424 | |
425 | if (!ubh) | |
426 | goto failed; | |
427 | ||
428 | ubh_ubhcpymem (space, ubh, size); | |
7b4ee73e | 429 | |
1da177e4 LT |
430 | space += size; |
431 | ubh_brelse (ubh); | |
432 | ubh = NULL; | |
433 | } | |
434 | ||
435 | /* | |
436 | * Read cylinder group (we read only first fragment from block | |
437 | * at this time) and prepare internal data structures for cg caching. | |
438 | */ | |
439 | if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) | |
440 | goto failed; | |
441 | for (i = 0; i < uspi->s_ncg; i++) | |
442 | sbi->s_ucg[i] = NULL; | |
443 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
444 | sbi->s_ucpi[i] = NULL; | |
445 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
446 | } | |
447 | for (i = 0; i < uspi->s_ncg; i++) { | |
abf5d15f | 448 | UFSD("read cg %u\n", i); |
1da177e4 LT |
449 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
450 | goto failed; | |
451 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
452 | goto failed; | |
abf5d15f | 453 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
454 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
455 | #endif | |
456 | } | |
457 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
458 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) | |
459 | goto failed; | |
460 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
461 | } | |
462 | sbi->s_cg_loaded = 0; | |
abf5d15f | 463 | UFSD("EXIT\n"); |
1da177e4 LT |
464 | return 1; |
465 | ||
466 | failed: | |
f99d49ad | 467 | kfree (base); |
1da177e4 LT |
468 | if (sbi->s_ucg) { |
469 | for (i = 0; i < uspi->s_ncg; i++) | |
f99d49ad JJ |
470 | if (sbi->s_ucg[i]) |
471 | brelse (sbi->s_ucg[i]); | |
1da177e4 LT |
472 | kfree (sbi->s_ucg); |
473 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
f99d49ad | 474 | kfree (sbi->s_ucpi[i]); |
1da177e4 | 475 | } |
abf5d15f | 476 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
477 | return 0; |
478 | } | |
479 | ||
480 | /* | |
481 | * Put on-disk structures associated with cylinder groups and | |
482 | * write them back to disk | |
483 | */ | |
e295cfcb ED |
484 | static void ufs_put_cylinder_structures (struct super_block *sb) |
485 | { | |
1da177e4 LT |
486 | struct ufs_sb_info * sbi = UFS_SB(sb); |
487 | struct ufs_sb_private_info * uspi; | |
488 | struct ufs_buffer_head * ubh; | |
489 | unsigned char * base, * space; | |
490 | unsigned blks, size, i; | |
491 | ||
abf5d15f | 492 | UFSD("ENTER\n"); |
1da177e4 LT |
493 | |
494 | uspi = sbi->s_uspi; | |
495 | ||
496 | size = uspi->s_cssize; | |
497 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
e295cfcb | 498 | base = space = (char*) sbi->s_csp; |
1da177e4 LT |
499 | for (i = 0; i < blks; i += uspi->s_fpb) { |
500 | size = uspi->s_bsize; | |
501 | if (i + uspi->s_fpb > blks) | |
502 | size = (blks - i) * uspi->s_fsize; | |
503 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); | |
504 | ubh_memcpyubh (ubh, space, size); | |
505 | space += size; | |
506 | ubh_mark_buffer_uptodate (ubh, 1); | |
507 | ubh_mark_buffer_dirty (ubh); | |
508 | ubh_brelse (ubh); | |
509 | } | |
510 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
511 | ufs_put_cylinder (sb, i); | |
512 | kfree (sbi->s_ucpi[i]); | |
513 | } | |
514 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
515 | kfree (sbi->s_ucpi[i]); | |
516 | for (i = 0; i < uspi->s_ncg; i++) | |
517 | brelse (sbi->s_ucg[i]); | |
518 | kfree (sbi->s_ucg); | |
519 | kfree (base); | |
abf5d15f | 520 | UFSD("EXIT\n"); |
1da177e4 LT |
521 | } |
522 | ||
523 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) | |
524 | { | |
525 | struct ufs_sb_info * sbi; | |
526 | struct ufs_sb_private_info * uspi; | |
527 | struct ufs_super_block_first * usb1; | |
528 | struct ufs_super_block_second * usb2; | |
529 | struct ufs_super_block_third * usb3; | |
530 | struct ufs_super_block *usb; | |
531 | struct ufs_buffer_head * ubh; | |
532 | struct inode *inode; | |
533 | unsigned block_size, super_block_size; | |
534 | unsigned flags; | |
7b4ee73e | 535 | unsigned super_block_offset; |
1da177e4 LT |
536 | |
537 | uspi = NULL; | |
538 | ubh = NULL; | |
539 | flags = 0; | |
540 | ||
abf5d15f | 541 | UFSD("ENTER\n"); |
1da177e4 LT |
542 | |
543 | sbi = kmalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); | |
544 | if (!sbi) | |
545 | goto failed_nomem; | |
546 | sb->s_fs_info = sbi; | |
547 | memset(sbi, 0, sizeof(struct ufs_sb_info)); | |
548 | ||
abf5d15f | 549 | UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); |
1da177e4 LT |
550 | |
551 | #ifndef CONFIG_UFS_FS_WRITE | |
552 | if (!(sb->s_flags & MS_RDONLY)) { | |
553 | printk("ufs was compiled with read-only support, " | |
554 | "can't be mounted as read-write\n"); | |
555 | goto failed; | |
556 | } | |
557 | #endif | |
558 | /* | |
559 | * Set default mount options | |
560 | * Parse mount options | |
561 | */ | |
562 | sbi->s_mount_opt = 0; | |
563 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
564 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
565 | printk("wrong mount options\n"); | |
566 | goto failed; | |
567 | } | |
568 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
569 | if (!silent) | |
570 | printk("You didn't specify the type of your ufs filesystem\n\n" | |
571 | "mount -t ufs -o ufstype=" | |
c690a722 | 572 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
1da177e4 LT |
573 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
574 | "default is ufstype=old\n"); | |
575 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
576 | } | |
577 | ||
578 | sbi->s_uspi = uspi = | |
579 | kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL); | |
580 | if (!uspi) | |
581 | goto failed; | |
582 | ||
7b4ee73e E |
583 | super_block_offset=UFS_SBLOCK; |
584 | ||
1da177e4 LT |
585 | /* Keep 2Gig file limit. Some UFS variants need to override |
586 | this but as I don't know which I'll let those in the know loosen | |
587 | the rules */ | |
1da177e4 LT |
588 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
589 | case UFS_MOUNT_UFSTYPE_44BSD: | |
abf5d15f | 590 | UFSD("ufstype=44bsd\n"); |
1da177e4 LT |
591 | uspi->s_fsize = block_size = 512; |
592 | uspi->s_fmask = ~(512 - 1); | |
593 | uspi->s_fshift = 9; | |
594 | uspi->s_sbsize = super_block_size = 1536; | |
595 | uspi->s_sbbase = 0; | |
596 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
597 | break; | |
598 | case UFS_MOUNT_UFSTYPE_UFS2: | |
abf5d15f | 599 | UFSD("ufstype=ufs2\n"); |
7b4ee73e | 600 | super_block_offset=SBLOCK_UFS2; |
1da177e4 LT |
601 | uspi->s_fsize = block_size = 512; |
602 | uspi->s_fmask = ~(512 - 1); | |
603 | uspi->s_fshift = 9; | |
604 | uspi->s_sbsize = super_block_size = 1536; | |
605 | uspi->s_sbbase = 0; | |
606 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
607 | if (!(sb->s_flags & MS_RDONLY)) { | |
608 | printk(KERN_INFO "ufstype=ufs2 is supported read-only\n"); | |
609 | sb->s_flags |= MS_RDONLY; | |
610 | } | |
611 | break; | |
612 | ||
613 | case UFS_MOUNT_UFSTYPE_SUN: | |
abf5d15f | 614 | UFSD("ufstype=sun\n"); |
1da177e4 LT |
615 | uspi->s_fsize = block_size = 1024; |
616 | uspi->s_fmask = ~(1024 - 1); | |
617 | uspi->s_fshift = 10; | |
618 | uspi->s_sbsize = super_block_size = 2048; | |
619 | uspi->s_sbbase = 0; | |
620 | uspi->s_maxsymlinklen = 56; | |
621 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; | |
622 | break; | |
623 | ||
624 | case UFS_MOUNT_UFSTYPE_SUNx86: | |
abf5d15f | 625 | UFSD("ufstype=sunx86\n"); |
1da177e4 LT |
626 | uspi->s_fsize = block_size = 1024; |
627 | uspi->s_fmask = ~(1024 - 1); | |
628 | uspi->s_fshift = 10; | |
629 | uspi->s_sbsize = super_block_size = 2048; | |
630 | uspi->s_sbbase = 0; | |
631 | uspi->s_maxsymlinklen = 56; | |
632 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; | |
633 | break; | |
634 | ||
635 | case UFS_MOUNT_UFSTYPE_OLD: | |
abf5d15f | 636 | UFSD("ufstype=old\n"); |
1da177e4 LT |
637 | uspi->s_fsize = block_size = 1024; |
638 | uspi->s_fmask = ~(1024 - 1); | |
639 | uspi->s_fshift = 10; | |
640 | uspi->s_sbsize = super_block_size = 2048; | |
641 | uspi->s_sbbase = 0; | |
642 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
643 | if (!(sb->s_flags & MS_RDONLY)) { | |
644 | if (!silent) | |
645 | printk(KERN_INFO "ufstype=old is supported read-only\n"); | |
646 | sb->s_flags |= MS_RDONLY; | |
647 | } | |
648 | break; | |
649 | ||
650 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
abf5d15f | 651 | UFSD("ufstype=nextstep\n"); |
1da177e4 LT |
652 | uspi->s_fsize = block_size = 1024; |
653 | uspi->s_fmask = ~(1024 - 1); | |
654 | uspi->s_fshift = 10; | |
655 | uspi->s_sbsize = super_block_size = 2048; | |
656 | uspi->s_sbbase = 0; | |
657 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
658 | if (!(sb->s_flags & MS_RDONLY)) { | |
659 | if (!silent) | |
660 | printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); | |
661 | sb->s_flags |= MS_RDONLY; | |
662 | } | |
663 | break; | |
664 | ||
665 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
abf5d15f | 666 | UFSD("ufstype=nextstep-cd\n"); |
1da177e4 LT |
667 | uspi->s_fsize = block_size = 2048; |
668 | uspi->s_fmask = ~(2048 - 1); | |
669 | uspi->s_fshift = 11; | |
670 | uspi->s_sbsize = super_block_size = 2048; | |
671 | uspi->s_sbbase = 0; | |
672 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
673 | if (!(sb->s_flags & MS_RDONLY)) { | |
674 | if (!silent) | |
675 | printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); | |
676 | sb->s_flags |= MS_RDONLY; | |
677 | } | |
678 | break; | |
679 | ||
680 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
abf5d15f | 681 | UFSD("ufstype=openstep\n"); |
1da177e4 LT |
682 | uspi->s_fsize = block_size = 1024; |
683 | uspi->s_fmask = ~(1024 - 1); | |
684 | uspi->s_fshift = 10; | |
685 | uspi->s_sbsize = super_block_size = 2048; | |
686 | uspi->s_sbbase = 0; | |
687 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
688 | if (!(sb->s_flags & MS_RDONLY)) { | |
689 | if (!silent) | |
690 | printk(KERN_INFO "ufstype=openstep is supported read-only\n"); | |
691 | sb->s_flags |= MS_RDONLY; | |
692 | } | |
693 | break; | |
694 | ||
695 | case UFS_MOUNT_UFSTYPE_HP: | |
abf5d15f | 696 | UFSD("ufstype=hp\n"); |
1da177e4 LT |
697 | uspi->s_fsize = block_size = 1024; |
698 | uspi->s_fmask = ~(1024 - 1); | |
699 | uspi->s_fshift = 10; | |
700 | uspi->s_sbsize = super_block_size = 2048; | |
701 | uspi->s_sbbase = 0; | |
702 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
703 | if (!(sb->s_flags & MS_RDONLY)) { | |
704 | if (!silent) | |
705 | printk(KERN_INFO "ufstype=hp is supported read-only\n"); | |
706 | sb->s_flags |= MS_RDONLY; | |
707 | } | |
708 | break; | |
709 | default: | |
710 | if (!silent) | |
711 | printk("unknown ufstype\n"); | |
712 | goto failed; | |
713 | } | |
714 | ||
715 | again: | |
716 | if (!sb_set_blocksize(sb, block_size)) { | |
717 | printk(KERN_ERR "UFS: failed to set blocksize\n"); | |
718 | goto failed; | |
719 | } | |
720 | ||
721 | /* | |
722 | * read ufs super block from device | |
723 | */ | |
7b4ee73e E |
724 | |
725 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); | |
726 | ||
1da177e4 LT |
727 | if (!ubh) |
728 | goto failed; | |
729 | ||
730 | ||
7b4ee73e E |
731 | usb1 = ubh_get_usb_first(uspi); |
732 | usb2 = ubh_get_usb_second(uspi); | |
733 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
734 | usb = (struct ufs_super_block *) |
735 | ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ; | |
736 | ||
737 | /* | |
738 | * Check ufs magic number | |
739 | */ | |
740 | sbi->s_bytesex = BYTESEX_LE; | |
741 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
742 | case UFS_MAGIC: | |
743 | case UFS2_MAGIC: | |
744 | case UFS_MAGIC_LFN: | |
745 | case UFS_MAGIC_FEA: | |
746 | case UFS_MAGIC_4GB: | |
747 | goto magic_found; | |
748 | } | |
749 | sbi->s_bytesex = BYTESEX_BE; | |
750 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
751 | case UFS_MAGIC: | |
752 | case UFS2_MAGIC: | |
753 | case UFS_MAGIC_LFN: | |
754 | case UFS_MAGIC_FEA: | |
755 | case UFS_MAGIC_4GB: | |
756 | goto magic_found; | |
757 | } | |
758 | ||
759 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
760 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
761 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
762 | && uspi->s_sbbase < 256) { | |
763 | ubh_brelse_uspi(uspi); | |
764 | ubh = NULL; | |
765 | uspi->s_sbbase += 8; | |
766 | goto again; | |
767 | } | |
768 | if (!silent) | |
769 | printk("ufs_read_super: bad magic number\n"); | |
770 | goto failed; | |
771 | ||
772 | magic_found: | |
773 | /* | |
774 | * Check block and fragment sizes | |
775 | */ | |
776 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
777 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
778 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
779 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
780 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
781 | ||
782 | if (uspi->s_fsize & (uspi->s_fsize - 1)) { | |
783 | printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", | |
784 | uspi->s_fsize); | |
785 | goto failed; | |
786 | } | |
787 | if (uspi->s_fsize < 512) { | |
788 | printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", | |
789 | uspi->s_fsize); | |
790 | goto failed; | |
791 | } | |
792 | if (uspi->s_fsize > 4096) { | |
793 | printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", | |
794 | uspi->s_fsize); | |
795 | goto failed; | |
796 | } | |
797 | if (uspi->s_bsize & (uspi->s_bsize - 1)) { | |
798 | printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", | |
799 | uspi->s_bsize); | |
800 | goto failed; | |
801 | } | |
802 | if (uspi->s_bsize < 4096) { | |
803 | printk(KERN_ERR "ufs_read_super: block size %u is too small\n", | |
804 | uspi->s_bsize); | |
805 | goto failed; | |
806 | } | |
807 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
808 | printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", | |
809 | uspi->s_bsize / uspi->s_fsize); | |
810 | goto failed; | |
811 | } | |
812 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
813 | ubh_brelse_uspi(uspi); | |
814 | ubh = NULL; | |
815 | block_size = uspi->s_fsize; | |
816 | super_block_size = uspi->s_sbsize; | |
abf5d15f | 817 | UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
1da177e4 LT |
818 | goto again; |
819 | } | |
820 | ||
abf5d15f | 821 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
822 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
823 | ufs2_print_super_stuff(sb,usb); | |
824 | else | |
825 | ufs_print_super_stuff(sb, usb1, usb2, usb3); | |
826 | #endif | |
827 | ||
828 | /* | |
829 | * Check, if file system was correctly unmounted. | |
830 | * If not, make it read only. | |
831 | */ | |
832 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || | |
833 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
834 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
835 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
836 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
837 | switch(usb1->fs_clean) { | |
838 | case UFS_FSCLEAN: | |
abf5d15f | 839 | UFSD("fs is clean\n"); |
1da177e4 LT |
840 | break; |
841 | case UFS_FSSTABLE: | |
abf5d15f | 842 | UFSD("fs is stable\n"); |
1da177e4 LT |
843 | break; |
844 | case UFS_FSOSF1: | |
abf5d15f | 845 | UFSD("fs is DEC OSF/1\n"); |
1da177e4 LT |
846 | break; |
847 | case UFS_FSACTIVE: | |
848 | printk("ufs_read_super: fs is active\n"); | |
849 | sb->s_flags |= MS_RDONLY; | |
850 | break; | |
851 | case UFS_FSBAD: | |
852 | printk("ufs_read_super: fs is bad\n"); | |
853 | sb->s_flags |= MS_RDONLY; | |
854 | break; | |
855 | default: | |
856 | printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); | |
857 | sb->s_flags |= MS_RDONLY; | |
858 | break; | |
859 | } | |
860 | } | |
861 | else { | |
862 | printk("ufs_read_super: fs needs fsck\n"); | |
863 | sb->s_flags |= MS_RDONLY; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Read ufs_super_block into internal data structures | |
868 | */ | |
869 | sb->s_op = &ufs_super_ops; | |
870 | sb->dq_op = NULL; /***/ | |
871 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); | |
872 | ||
873 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
874 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
875 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
876 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
877 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
878 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
879 | ||
880 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
881 | uspi->s_u2_size = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size); | |
882 | uspi->s_u2_dsize = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize); | |
883 | } | |
884 | else { | |
885 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); | |
886 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
887 | } | |
888 | ||
889 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
890 | /* s_bsize already set */ | |
891 | /* s_fsize already set */ | |
892 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
893 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
894 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
895 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
896 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
897 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
abf5d15f ED |
898 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, |
899 | uspi->s_fshift); | |
1da177e4 LT |
900 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); |
901 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
902 | /* s_sbsize already set */ | |
903 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
904 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
905 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
906 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
907 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
908 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
909 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
910 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
911 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
912 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); | |
913 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
914 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
915 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
916 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
917 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
918 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
919 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_cpc); | |
920 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize); | |
921 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); | |
922 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
923 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
924 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); | |
925 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
926 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
927 | ||
928 | /* | |
929 | * Compute another frequently used values | |
930 | */ | |
931 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
abf5d15f | 932 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 933 | uspi->s_apbshift = uspi->s_bshift - 3; |
abf5d15f | 934 | else |
1da177e4 | 935 | uspi->s_apbshift = uspi->s_bshift - 2; |
abf5d15f | 936 | |
1da177e4 LT |
937 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
938 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
939 | uspi->s_apb = 1 << uspi->s_apbshift; | |
940 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
941 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
942 | uspi->s_apbmask = uspi->s_apb - 1; | |
943 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
944 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
945 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
946 | uspi->s_bpf = uspi->s_fsize << 3; | |
947 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
948 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
949 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == | |
950 | UFS_MOUNT_UFSTYPE_44BSD) | |
951 | uspi->s_maxsymlinklen = | |
952 | fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_maxsymlinklen); | |
953 | ||
954 | sbi->s_flags = flags; | |
955 | ||
956 | inode = iget(sb, UFS_ROOTINO); | |
957 | if (!inode || is_bad_inode(inode)) | |
958 | goto failed; | |
959 | sb->s_root = d_alloc_root(inode); | |
960 | if (!sb->s_root) | |
961 | goto dalloc_failed; | |
962 | ||
963 | ||
964 | /* | |
965 | * Read cylinder group structures | |
966 | */ | |
967 | if (!(sb->s_flags & MS_RDONLY)) | |
968 | if (!ufs_read_cylinder_structures(sb)) | |
969 | goto failed; | |
970 | ||
abf5d15f | 971 | UFSD("EXIT\n"); |
1da177e4 LT |
972 | return 0; |
973 | ||
974 | dalloc_failed: | |
975 | iput(inode); | |
976 | failed: | |
f99d49ad JJ |
977 | if (ubh) |
978 | ubh_brelse_uspi (uspi); | |
979 | kfree (uspi); | |
980 | kfree(sbi); | |
1da177e4 | 981 | sb->s_fs_info = NULL; |
abf5d15f | 982 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
983 | return -EINVAL; |
984 | ||
985 | failed_nomem: | |
abf5d15f | 986 | UFSD("EXIT (NOMEM)\n"); |
1da177e4 LT |
987 | return -ENOMEM; |
988 | } | |
989 | ||
990 | static void ufs_write_super (struct super_block *sb) { | |
991 | struct ufs_sb_private_info * uspi; | |
992 | struct ufs_super_block_first * usb1; | |
993 | struct ufs_super_block_third * usb3; | |
994 | unsigned flags; | |
995 | ||
996 | lock_kernel(); | |
997 | ||
abf5d15f | 998 | UFSD("ENTER\n"); |
1da177e4 LT |
999 | flags = UFS_SB(sb)->s_flags; |
1000 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e E |
1001 | usb1 = ubh_get_usb_first(uspi); |
1002 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1003 | |
1004 | if (!(sb->s_flags & MS_RDONLY)) { | |
1005 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
1006 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
1007 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
1008 | ufs_set_fs_state(sb, usb1, usb3, | |
1009 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1010 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1da177e4 LT |
1011 | } |
1012 | sb->s_dirt = 0; | |
abf5d15f | 1013 | UFSD("EXIT\n"); |
1da177e4 LT |
1014 | unlock_kernel(); |
1015 | } | |
1016 | ||
abf5d15f | 1017 | static void ufs_put_super(struct super_block *sb) |
1da177e4 LT |
1018 | { |
1019 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
1020 | ||
abf5d15f | 1021 | UFSD("ENTER\n"); |
1da177e4 LT |
1022 | |
1023 | if (!(sb->s_flags & MS_RDONLY)) | |
1024 | ufs_put_cylinder_structures (sb); | |
1025 | ||
1026 | ubh_brelse_uspi (sbi->s_uspi); | |
1027 | kfree (sbi->s_uspi); | |
1028 | kfree (sbi); | |
1029 | sb->s_fs_info = NULL; | |
abf5d15f | 1030 | UFSD("EXIT\n"); |
1da177e4 LT |
1031 | return; |
1032 | } | |
1033 | ||
1034 | ||
1035 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) | |
1036 | { | |
1037 | struct ufs_sb_private_info * uspi; | |
1038 | struct ufs_super_block_first * usb1; | |
1039 | struct ufs_super_block_third * usb3; | |
1040 | unsigned new_mount_opt, ufstype; | |
1041 | unsigned flags; | |
1042 | ||
1043 | uspi = UFS_SB(sb)->s_uspi; | |
1044 | flags = UFS_SB(sb)->s_flags; | |
7b4ee73e E |
1045 | usb1 = ubh_get_usb_first(uspi); |
1046 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1047 | |
1048 | /* | |
1049 | * Allow the "check" option to be passed as a remount option. | |
1050 | * It is not possible to change ufstype option during remount | |
1051 | */ | |
1052 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1053 | new_mount_opt = 0; | |
1054 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
1055 | if (!ufs_parse_options (data, &new_mount_opt)) | |
1056 | return -EINVAL; | |
1057 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
1058 | new_mount_opt |= ufstype; | |
1059 | } | |
1060 | else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { | |
1061 | printk("ufstype can't be changed during remount\n"); | |
1062 | return -EINVAL; | |
1063 | } | |
1064 | ||
1065 | if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { | |
1066 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | /* | |
1071 | * fs was mouted as rw, remounting ro | |
1072 | */ | |
1073 | if (*mount_flags & MS_RDONLY) { | |
1074 | ufs_put_cylinder_structures(sb); | |
1075 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
1076 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
1077 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
1078 | ufs_set_fs_state(sb, usb1, usb3, | |
1079 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1080 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1da177e4 LT |
1081 | sb->s_dirt = 0; |
1082 | sb->s_flags |= MS_RDONLY; | |
1083 | } | |
1084 | /* | |
1085 | * fs was mounted as ro, remounting rw | |
1086 | */ | |
1087 | else { | |
1088 | #ifndef CONFIG_UFS_FS_WRITE | |
1089 | printk("ufs was compiled with read-only support, " | |
1090 | "can't be mounted as read-write\n"); | |
1091 | return -EINVAL; | |
1092 | #else | |
1093 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
1094 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && | |
1095 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86) { | |
1096 | printk("this ufstype is read-only supported\n"); | |
1097 | return -EINVAL; | |
1098 | } | |
1099 | if (!ufs_read_cylinder_structures (sb)) { | |
1100 | printk("failed during remounting\n"); | |
1101 | return -EPERM; | |
1102 | } | |
1103 | sb->s_flags &= ~MS_RDONLY; | |
1104 | #endif | |
1105 | } | |
1106 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
1107 | return 0; | |
1108 | } | |
1109 | ||
726c3342 | 1110 | static int ufs_statfs (struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 1111 | { |
726c3342 | 1112 | struct super_block *sb = dentry->d_sb; |
1da177e4 LT |
1113 | struct ufs_sb_private_info * uspi; |
1114 | struct ufs_super_block_first * usb1; | |
1115 | struct ufs_super_block * usb; | |
1116 | unsigned flags = 0; | |
1117 | ||
1118 | lock_kernel(); | |
1119 | ||
1120 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 1121 | usb1 = ubh_get_usb_first (uspi); |
1da177e4 LT |
1122 | usb = (struct ufs_super_block *) |
1123 | ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ; | |
1124 | ||
1125 | flags = UFS_SB(sb)->s_flags; | |
1126 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
1127 | buf->f_type = UFS2_MAGIC; | |
1128 | buf->f_blocks = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize); | |
1129 | buf->f_bfree = ufs_blkstofrags(fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)) + | |
1130 | fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nffree); | |
1131 | buf->f_ffree = fs64_to_cpu(sb, | |
1132 | usb->fs_u11.fs_u2.fs_cstotal.cs_nifree); | |
1133 | } | |
1134 | else { | |
1135 | buf->f_type = UFS_MAGIC; | |
1136 | buf->f_blocks = uspi->s_dsize; | |
1137 | buf->f_bfree = ufs_blkstofrags(fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)) + | |
1138 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
1139 | buf->f_ffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
1140 | } | |
1141 | buf->f_bsize = sb->s_blocksize; | |
1142 | buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) | |
1143 | ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; | |
1144 | buf->f_files = uspi->s_ncg * uspi->s_ipg; | |
1145 | buf->f_namelen = UFS_MAXNAMLEN; | |
1146 | ||
1147 | unlock_kernel(); | |
1148 | ||
1149 | return 0; | |
1150 | } | |
1151 | ||
1152 | static kmem_cache_t * ufs_inode_cachep; | |
1153 | ||
1154 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1155 | { | |
1156 | struct ufs_inode_info *ei; | |
1157 | ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, SLAB_KERNEL); | |
1158 | if (!ei) | |
1159 | return NULL; | |
1160 | ei->vfs_inode.i_version = 1; | |
1161 | return &ei->vfs_inode; | |
1162 | } | |
1163 | ||
1164 | static void ufs_destroy_inode(struct inode *inode) | |
1165 | { | |
1166 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); | |
1167 | } | |
1168 | ||
1169 | static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) | |
1170 | { | |
1171 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1172 | ||
1173 | if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == | |
1174 | SLAB_CTOR_CONSTRUCTOR) | |
1175 | inode_init_once(&ei->vfs_inode); | |
1176 | } | |
1177 | ||
1178 | static int init_inodecache(void) | |
1179 | { | |
1180 | ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", | |
1181 | sizeof(struct ufs_inode_info), | |
fffb60f9 PJ |
1182 | 0, (SLAB_RECLAIM_ACCOUNT| |
1183 | SLAB_MEM_SPREAD), | |
1da177e4 LT |
1184 | init_once, NULL); |
1185 | if (ufs_inode_cachep == NULL) | |
1186 | return -ENOMEM; | |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | static void destroy_inodecache(void) | |
1191 | { | |
1192 | if (kmem_cache_destroy(ufs_inode_cachep)) | |
1193 | printk(KERN_INFO "ufs_inode_cache: not all structures were freed\n"); | |
1194 | } | |
1195 | ||
1196 | #ifdef CONFIG_QUOTA | |
1197 | static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t); | |
1198 | static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t); | |
1199 | #endif | |
1200 | ||
1201 | static struct super_operations ufs_super_ops = { | |
1202 | .alloc_inode = ufs_alloc_inode, | |
1203 | .destroy_inode = ufs_destroy_inode, | |
1204 | .read_inode = ufs_read_inode, | |
1205 | .write_inode = ufs_write_inode, | |
1206 | .delete_inode = ufs_delete_inode, | |
1207 | .put_super = ufs_put_super, | |
1208 | .write_super = ufs_write_super, | |
1209 | .statfs = ufs_statfs, | |
1210 | .remount_fs = ufs_remount, | |
1211 | #ifdef CONFIG_QUOTA | |
1212 | .quota_read = ufs_quota_read, | |
1213 | .quota_write = ufs_quota_write, | |
1214 | #endif | |
1215 | }; | |
1216 | ||
1217 | #ifdef CONFIG_QUOTA | |
1218 | ||
1219 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
1220 | * acquiring the locks... As quota files are never truncated and quota code | |
1221 | * itself serializes the operations (and noone else should touch the files) | |
1222 | * we don't have to be afraid of races */ | |
1223 | static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data, | |
1224 | size_t len, loff_t off) | |
1225 | { | |
1226 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1227 | sector_t blk = off >> sb->s_blocksize_bits; | |
1228 | int err = 0; | |
1229 | int offset = off & (sb->s_blocksize - 1); | |
1230 | int tocopy; | |
1231 | size_t toread; | |
1232 | struct buffer_head *bh; | |
1233 | loff_t i_size = i_size_read(inode); | |
1234 | ||
1235 | if (off > i_size) | |
1236 | return 0; | |
1237 | if (off+len > i_size) | |
1238 | len = i_size-off; | |
1239 | toread = len; | |
1240 | while (toread > 0) { | |
1241 | tocopy = sb->s_blocksize - offset < toread ? | |
1242 | sb->s_blocksize - offset : toread; | |
1243 | ||
1244 | bh = ufs_bread(inode, blk, 0, &err); | |
1245 | if (err) | |
1246 | return err; | |
1247 | if (!bh) /* A hole? */ | |
1248 | memset(data, 0, tocopy); | |
1249 | else { | |
1250 | memcpy(data, bh->b_data+offset, tocopy); | |
1251 | brelse(bh); | |
1252 | } | |
1253 | offset = 0; | |
1254 | toread -= tocopy; | |
1255 | data += tocopy; | |
1256 | blk++; | |
1257 | } | |
1258 | return len; | |
1259 | } | |
1260 | ||
1261 | /* Write to quotafile */ | |
1262 | static ssize_t ufs_quota_write(struct super_block *sb, int type, | |
1263 | const char *data, size_t len, loff_t off) | |
1264 | { | |
1265 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1266 | sector_t blk = off >> sb->s_blocksize_bits; | |
1267 | int err = 0; | |
1268 | int offset = off & (sb->s_blocksize - 1); | |
1269 | int tocopy; | |
1270 | size_t towrite = len; | |
1271 | struct buffer_head *bh; | |
1272 | ||
1b1dcc1b | 1273 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
1274 | while (towrite > 0) { |
1275 | tocopy = sb->s_blocksize - offset < towrite ? | |
1276 | sb->s_blocksize - offset : towrite; | |
1277 | ||
1278 | bh = ufs_bread(inode, blk, 1, &err); | |
1279 | if (!bh) | |
1280 | goto out; | |
1281 | lock_buffer(bh); | |
1282 | memcpy(bh->b_data+offset, data, tocopy); | |
1283 | flush_dcache_page(bh->b_page); | |
1284 | set_buffer_uptodate(bh); | |
1285 | mark_buffer_dirty(bh); | |
1286 | unlock_buffer(bh); | |
1287 | brelse(bh); | |
1288 | offset = 0; | |
1289 | towrite -= tocopy; | |
1290 | data += tocopy; | |
1291 | blk++; | |
1292 | } | |
1293 | out: | |
15b2fe39 | 1294 | if (len == towrite) { |
1b1dcc1b | 1295 | mutex_unlock(&inode->i_mutex); |
1da177e4 | 1296 | return err; |
15b2fe39 | 1297 | } |
1da177e4 LT |
1298 | if (inode->i_size < off+len-towrite) |
1299 | i_size_write(inode, off+len-towrite); | |
1300 | inode->i_version++; | |
1301 | inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; | |
1302 | mark_inode_dirty(inode); | |
1b1dcc1b | 1303 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
1304 | return len - towrite; |
1305 | } | |
1306 | ||
1307 | #endif | |
1308 | ||
454e2398 DH |
1309 | static int ufs_get_sb(struct file_system_type *fs_type, |
1310 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) | |
1da177e4 | 1311 | { |
454e2398 | 1312 | return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt); |
1da177e4 LT |
1313 | } |
1314 | ||
1315 | static struct file_system_type ufs_fs_type = { | |
1316 | .owner = THIS_MODULE, | |
1317 | .name = "ufs", | |
1318 | .get_sb = ufs_get_sb, | |
1319 | .kill_sb = kill_block_super, | |
1320 | .fs_flags = FS_REQUIRES_DEV, | |
1321 | }; | |
1322 | ||
1323 | static int __init init_ufs_fs(void) | |
1324 | { | |
1325 | int err = init_inodecache(); | |
1326 | if (err) | |
1327 | goto out1; | |
1328 | err = register_filesystem(&ufs_fs_type); | |
1329 | if (err) | |
1330 | goto out; | |
1331 | return 0; | |
1332 | out: | |
1333 | destroy_inodecache(); | |
1334 | out1: | |
1335 | return err; | |
1336 | } | |
1337 | ||
1338 | static void __exit exit_ufs_fs(void) | |
1339 | { | |
1340 | unregister_filesystem(&ufs_fs_type); | |
1341 | destroy_inodecache(); | |
1342 | } | |
1343 | ||
1344 | module_init(init_ufs_fs) | |
1345 | module_exit(exit_ufs_fs) | |
1346 | MODULE_LICENSE("GPL"); |