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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 | |
f762dd68 | 44 | * Gertjan van Wingerde <gwingerde@gmail.com> |
1da177e4 LT |
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 | * | |
cbcae39f ED |
64 | * UFS2 write support added by |
65 | * Evgeniy Dushistov <dushistov@mail.ru>, 2007 | |
1da177e4 LT |
66 | */ |
67 | ||
68 | ||
1da177e4 LT |
69 | #include <linux/module.h> |
70 | #include <linux/bitops.h> | |
71 | ||
72 | #include <stdarg.h> | |
73 | ||
74 | #include <asm/uaccess.h> | |
75 | #include <asm/system.h> | |
76 | ||
77 | #include <linux/errno.h> | |
78 | #include <linux/fs.h> | |
74abb989 | 79 | #include <linux/quotaops.h> |
1da177e4 LT |
80 | #include <linux/slab.h> |
81 | #include <linux/time.h> | |
82 | #include <linux/stat.h> | |
83 | #include <linux/string.h> | |
84 | #include <linux/blkdev.h> | |
85 | #include <linux/init.h> | |
86 | #include <linux/parser.h> | |
87 | #include <linux/smp_lock.h> | |
88 | #include <linux/buffer_head.h> | |
89 | #include <linux/vfs.h> | |
9e8c4273 | 90 | #include <linux/log2.h> |
2a9807c0 ED |
91 | #include <linux/mount.h> |
92 | #include <linux/seq_file.h> | |
1da177e4 | 93 | |
e5420598 | 94 | #include "ufs_fs.h" |
bcd6d4ec | 95 | #include "ufs.h" |
1da177e4 LT |
96 | #include "swab.h" |
97 | #include "util.h" | |
98 | ||
abf5d15f | 99 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
100 | /* |
101 | * Print contents of ufs_super_block, useful for debugging | |
102 | */ | |
3313e292 | 103 | static void ufs_print_super_stuff(struct super_block *sb, |
647b7e87 ED |
104 | struct ufs_super_block_first *usb1, |
105 | struct ufs_super_block_second *usb2, | |
106 | struct ufs_super_block_third *usb3) | |
1da177e4 | 107 | { |
3313e292 ED |
108 | u32 magic = fs32_to_cpu(sb, usb3->fs_magic); |
109 | ||
1da177e4 | 110 | printk("ufs_print_super_stuff\n"); |
3313e292 ED |
111 | printk(" magic: 0x%x\n", magic); |
112 | if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { | |
647b7e87 ED |
113 | printk(" fs_size: %llu\n", (unsigned long long) |
114 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); | |
115 | printk(" fs_dsize: %llu\n", (unsigned long long) | |
116 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); | |
117 | printk(" bsize: %u\n", | |
118 | fs32_to_cpu(sb, usb1->fs_bsize)); | |
119 | printk(" fsize: %u\n", | |
120 | fs32_to_cpu(sb, usb1->fs_fsize)); | |
121 | printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); | |
122 | printk(" fs_sblockloc: %llu\n", (unsigned long long) | |
123 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); | |
124 | printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long) | |
125 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); | |
126 | printk(" cs_nbfree(No of free blocks): %llu\n", | |
127 | (unsigned long long) | |
128 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); | |
3313e292 ED |
129 | printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n", |
130 | (unsigned long long) | |
131 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); | |
132 | printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n", | |
133 | (unsigned long long) | |
134 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); | |
90b315af ED |
135 | printk(KERN_INFO" fs_maxsymlinklen: %u\n", |
136 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); | |
647b7e87 ED |
137 | } else { |
138 | printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); | |
139 | printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
140 | printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
141 | printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
142 | printk(" cgoffset: %u\n", | |
143 | fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
144 | printk(" ~cgmask: 0x%x\n", | |
145 | ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
146 | printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
147 | printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
148 | printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
149 | printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
150 | printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
151 | printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
152 | printk(" fragshift: %u\n", | |
153 | fs32_to_cpu(sb, usb1->fs_fragshift)); | |
154 | printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
155 | printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
156 | printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
157 | printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
158 | printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
159 | printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
160 | printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
161 | printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
162 | printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
163 | printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
164 | printk(" fstodb: %u\n", | |
165 | fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
166 | printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
167 | printk(" ndir %u\n", | |
168 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
169 | printk(" nifree %u\n", | |
170 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
171 | printk(" nbfree %u\n", | |
172 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
173 | printk(" nffree %u\n", | |
174 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
175 | } | |
1da177e4 LT |
176 | printk("\n"); |
177 | } | |
178 | ||
179 | /* | |
180 | * Print contents of ufs_cylinder_group, useful for debugging | |
181 | */ | |
647b7e87 ED |
182 | static void ufs_print_cylinder_stuff(struct super_block *sb, |
183 | struct ufs_cylinder_group *cg) | |
1da177e4 LT |
184 | { |
185 | printk("\nufs_print_cylinder_stuff\n"); | |
96710b29 | 186 | printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); |
1da177e4 LT |
187 | printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); |
188 | printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
189 | printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
190 | printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
191 | printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
192 | printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
193 | printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
194 | printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
195 | printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
196 | printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
197 | printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
198 | printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
199 | printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
200 | printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
201 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), | |
202 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
203 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
204 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
205 | printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); | |
206 | printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
207 | printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
208 | printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
209 | printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
647b7e87 ED |
210 | printk(" clustersumoff %u\n", |
211 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
212 | printk(" clusteroff %u\n", | |
213 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
214 | printk(" nclusterblks %u\n", | |
215 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
1da177e4 LT |
216 | printk("\n"); |
217 | } | |
647b7e87 | 218 | #else |
3313e292 | 219 | # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
647b7e87 | 220 | # define ufs_print_cylinder_stuff(sb, cg) /**/ |
abf5d15f | 221 | #endif /* CONFIG_UFS_DEBUG */ |
1da177e4 | 222 | |
ee9b6d61 | 223 | static const struct super_operations ufs_super_ops; |
1da177e4 LT |
224 | |
225 | static char error_buf[1024]; | |
226 | ||
227 | void ufs_error (struct super_block * sb, const char * function, | |
228 | const char * fmt, ...) | |
229 | { | |
230 | struct ufs_sb_private_info * uspi; | |
231 | struct ufs_super_block_first * usb1; | |
232 | va_list args; | |
233 | ||
234 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 235 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
236 | |
237 | if (!(sb->s_flags & MS_RDONLY)) { | |
238 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 239 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
1da177e4 LT |
240 | sb->s_dirt = 1; |
241 | sb->s_flags |= MS_RDONLY; | |
242 | } | |
243 | va_start (args, fmt); | |
4a6e617a | 244 | vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
1da177e4 LT |
245 | va_end (args); |
246 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { | |
247 | case UFS_MOUNT_ONERROR_PANIC: | |
248 | panic ("UFS-fs panic (device %s): %s: %s\n", | |
249 | sb->s_id, function, error_buf); | |
250 | ||
251 | case UFS_MOUNT_ONERROR_LOCK: | |
252 | case UFS_MOUNT_ONERROR_UMOUNT: | |
253 | case UFS_MOUNT_ONERROR_REPAIR: | |
254 | printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", | |
255 | sb->s_id, function, error_buf); | |
256 | } | |
257 | } | |
258 | ||
259 | void ufs_panic (struct super_block * sb, const char * function, | |
260 | const char * fmt, ...) | |
261 | { | |
262 | struct ufs_sb_private_info * uspi; | |
263 | struct ufs_super_block_first * usb1; | |
264 | va_list args; | |
265 | ||
266 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 267 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
268 | |
269 | if (!(sb->s_flags & MS_RDONLY)) { | |
270 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 271 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
1da177e4 LT |
272 | sb->s_dirt = 1; |
273 | } | |
274 | va_start (args, fmt); | |
4a6e617a | 275 | vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
1da177e4 LT |
276 | va_end (args); |
277 | sb->s_flags |= MS_RDONLY; | |
278 | printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", | |
279 | sb->s_id, function, error_buf); | |
280 | } | |
281 | ||
282 | void ufs_warning (struct super_block * sb, const char * function, | |
283 | const char * fmt, ...) | |
284 | { | |
285 | va_list args; | |
286 | ||
287 | va_start (args, fmt); | |
4a6e617a | 288 | vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
1da177e4 LT |
289 | va_end (args); |
290 | printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", | |
291 | sb->s_id, function, error_buf); | |
292 | } | |
293 | ||
294 | enum { | |
2a9807c0 ED |
295 | Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
296 | Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, | |
297 | Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, | |
298 | Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, | |
299 | Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, | |
300 | Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, | |
301 | Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, | |
302 | Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, | |
303 | Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, | |
304 | Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, | |
305 | Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, | |
306 | Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, | |
307 | Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, | |
308 | Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, | |
309 | Opt_err | |
1da177e4 LT |
310 | }; |
311 | ||
a447c093 | 312 | static const match_table_t tokens = { |
1da177e4 LT |
313 | {Opt_type_old, "ufstype=old"}, |
314 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
315 | {Opt_type_sun, "ufstype=sun"}, | |
252e211e | 316 | {Opt_type_sunos, "ufstype=sunos"}, |
1da177e4 LT |
317 | {Opt_type_44bsd, "ufstype=44bsd"}, |
318 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
319 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
320 | {Opt_type_hp, "ufstype=hp"}, | |
321 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
322 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
323 | {Opt_type_openstep, "ufstype=openstep"}, | |
2a9807c0 | 324 | /*end of possible ufs types */ |
1da177e4 LT |
325 | {Opt_onerror_panic, "onerror=panic"}, |
326 | {Opt_onerror_lock, "onerror=lock"}, | |
327 | {Opt_onerror_umount, "onerror=umount"}, | |
328 | {Opt_onerror_repair, "onerror=repair"}, | |
329 | {Opt_err, NULL} | |
330 | }; | |
331 | ||
332 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
333 | { | |
334 | char * p; | |
335 | ||
abf5d15f | 336 | UFSD("ENTER\n"); |
1da177e4 LT |
337 | |
338 | if (!options) | |
339 | return 1; | |
340 | ||
341 | while ((p = strsep(&options, ",")) != NULL) { | |
342 | substring_t args[MAX_OPT_ARGS]; | |
343 | int token; | |
344 | if (!*p) | |
345 | continue; | |
346 | ||
347 | token = match_token(p, tokens, args); | |
348 | switch (token) { | |
349 | case Opt_type_old: | |
350 | ufs_clear_opt (*mount_options, UFSTYPE); | |
351 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
352 | break; | |
353 | case Opt_type_sunx86: | |
354 | ufs_clear_opt (*mount_options, UFSTYPE); | |
355 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
356 | break; | |
357 | case Opt_type_sun: | |
358 | ufs_clear_opt (*mount_options, UFSTYPE); | |
359 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
360 | break; | |
252e211e MF |
361 | case Opt_type_sunos: |
362 | ufs_clear_opt(*mount_options, UFSTYPE); | |
363 | ufs_set_opt(*mount_options, UFSTYPE_SUNOS); | |
364 | break; | |
1da177e4 LT |
365 | case Opt_type_44bsd: |
366 | ufs_clear_opt (*mount_options, UFSTYPE); | |
367 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
368 | break; | |
369 | case Opt_type_ufs2: | |
370 | ufs_clear_opt(*mount_options, UFSTYPE); | |
371 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
372 | break; | |
373 | case Opt_type_hp: | |
374 | ufs_clear_opt (*mount_options, UFSTYPE); | |
375 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
376 | break; | |
377 | case Opt_type_nextstepcd: | |
378 | ufs_clear_opt (*mount_options, UFSTYPE); | |
379 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
380 | break; | |
381 | case Opt_type_nextstep: | |
382 | ufs_clear_opt (*mount_options, UFSTYPE); | |
383 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
384 | break; | |
385 | case Opt_type_openstep: | |
386 | ufs_clear_opt (*mount_options, UFSTYPE); | |
387 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
388 | break; | |
389 | case Opt_onerror_panic: | |
390 | ufs_clear_opt (*mount_options, ONERROR); | |
391 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
392 | break; | |
393 | case Opt_onerror_lock: | |
394 | ufs_clear_opt (*mount_options, ONERROR); | |
395 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
396 | break; | |
397 | case Opt_onerror_umount: | |
398 | ufs_clear_opt (*mount_options, ONERROR); | |
399 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
400 | break; | |
401 | case Opt_onerror_repair: | |
402 | printk("UFS-fs: Unable to do repair on error, " | |
403 | "will lock lock instead\n"); | |
404 | ufs_clear_opt (*mount_options, ONERROR); | |
405 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
406 | break; | |
407 | default: | |
408 | printk("UFS-fs: Invalid option: \"%s\" " | |
409 | "or missing value\n", p); | |
410 | return 0; | |
411 | } | |
412 | } | |
413 | return 1; | |
414 | } | |
415 | ||
416 | /* | |
ee3ffd6c ED |
417 | * Diffrent types of UFS hold fs_cstotal in different |
418 | * places, and use diffrent data structure for it. | |
419 | * To make things simplier we just copy fs_cstotal to ufs_sb_private_info | |
1da177e4 | 420 | */ |
ee3ffd6c | 421 | static void ufs_setup_cstotal(struct super_block *sb) |
e295cfcb | 422 | { |
647b7e87 ED |
423 | struct ufs_sb_info *sbi = UFS_SB(sb); |
424 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
ee3ffd6c ED |
425 | struct ufs_super_block_first *usb1; |
426 | struct ufs_super_block_second *usb2; | |
647b7e87 | 427 | struct ufs_super_block_third *usb3; |
ee3ffd6c ED |
428 | unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
429 | ||
430 | UFSD("ENTER, mtype=%u\n", mtype); | |
431 | usb1 = ubh_get_usb_first(uspi); | |
432 | usb2 = ubh_get_usb_second(uspi); | |
433 | usb3 = ubh_get_usb_third(uspi); | |
434 | ||
435 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
436 | (usb1->fs_flags & UFS_FLAGS_UPDATED)) || | |
437 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { | |
438 | /*we have statistic in different place, then usual*/ | |
439 | uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); | |
440 | uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); | |
441 | uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); | |
442 | uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); | |
443 | } else { | |
444 | uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); | |
445 | uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); | |
446 | uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
447 | uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
448 | } | |
449 | UFSD("EXIT\n"); | |
450 | } | |
451 | ||
452 | /* | |
453 | * Read on-disk structures associated with cylinder groups | |
454 | */ | |
455 | static int ufs_read_cylinder_structures(struct super_block *sb) | |
456 | { | |
457 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
458 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
459 | struct ufs_buffer_head * ubh; |
460 | unsigned char * base, * space; | |
461 | unsigned size, blks, i; | |
ee3ffd6c ED |
462 | struct ufs_super_block_third *usb3; |
463 | ||
abf5d15f | 464 | UFSD("ENTER\n"); |
1da177e4 | 465 | |
ee3ffd6c | 466 | usb3 = ubh_get_usb_third(uspi); |
1da177e4 LT |
467 | /* |
468 | * Read cs structures from (usually) first data block | |
469 | * on the device. | |
470 | */ | |
471 | size = uspi->s_cssize; | |
472 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
473 | base = space = kmalloc(size, GFP_KERNEL); | |
474 | if (!base) | |
475 | goto failed; | |
e295cfcb | 476 | sbi->s_csp = (struct ufs_csum *)space; |
1da177e4 LT |
477 | for (i = 0; i < blks; i += uspi->s_fpb) { |
478 | size = uspi->s_bsize; | |
479 | if (i + uspi->s_fpb > blks) | |
480 | size = (blks - i) * uspi->s_fsize; | |
481 | ||
3313e292 | 482 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
7b4ee73e E |
483 | |
484 | if (!ubh) | |
485 | goto failed; | |
486 | ||
487 | ubh_ubhcpymem (space, ubh, size); | |
7b4ee73e | 488 | |
1da177e4 LT |
489 | space += size; |
490 | ubh_brelse (ubh); | |
491 | ubh = NULL; | |
492 | } | |
493 | ||
494 | /* | |
495 | * Read cylinder group (we read only first fragment from block | |
496 | * at this time) and prepare internal data structures for cg caching. | |
497 | */ | |
498 | if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) | |
499 | goto failed; | |
500 | for (i = 0; i < uspi->s_ncg; i++) | |
501 | sbi->s_ucg[i] = NULL; | |
502 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
503 | sbi->s_ucpi[i] = NULL; | |
504 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
505 | } | |
506 | for (i = 0; i < uspi->s_ncg; i++) { | |
abf5d15f | 507 | UFSD("read cg %u\n", i); |
1da177e4 LT |
508 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
509 | goto failed; | |
510 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
511 | goto failed; | |
647b7e87 | 512 | |
1da177e4 | 513 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
1da177e4 LT |
514 | } |
515 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
516 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) | |
517 | goto failed; | |
518 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
519 | } | |
520 | sbi->s_cg_loaded = 0; | |
abf5d15f | 521 | UFSD("EXIT\n"); |
1da177e4 LT |
522 | return 1; |
523 | ||
524 | failed: | |
f99d49ad | 525 | kfree (base); |
1da177e4 LT |
526 | if (sbi->s_ucg) { |
527 | for (i = 0; i < uspi->s_ncg; i++) | |
f99d49ad JJ |
528 | if (sbi->s_ucg[i]) |
529 | brelse (sbi->s_ucg[i]); | |
1da177e4 LT |
530 | kfree (sbi->s_ucg); |
531 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
f99d49ad | 532 | kfree (sbi->s_ucpi[i]); |
1da177e4 | 533 | } |
abf5d15f | 534 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
535 | return 0; |
536 | } | |
537 | ||
538 | /* | |
ee3ffd6c | 539 | * Sync our internal copy of fs_cstotal with disk |
1da177e4 | 540 | */ |
ee3ffd6c | 541 | static void ufs_put_cstotal(struct super_block *sb) |
e295cfcb | 542 | { |
ee3ffd6c ED |
543 | unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
544 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
545 | struct ufs_super_block_first *usb1; | |
546 | struct ufs_super_block_second *usb2; | |
547 | struct ufs_super_block_third *usb3; | |
548 | ||
549 | UFSD("ENTER\n"); | |
550 | usb1 = ubh_get_usb_first(uspi); | |
551 | usb2 = ubh_get_usb_second(uspi); | |
552 | usb3 = ubh_get_usb_third(uspi); | |
553 | ||
554 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
555 | (usb1->fs_flags & UFS_FLAGS_UPDATED)) || | |
556 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { | |
557 | /*we have statistic in different place, then usual*/ | |
558 | usb2->fs_un.fs_u2.cs_ndir = | |
559 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
560 | usb2->fs_un.fs_u2.cs_nbfree = | |
561 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
562 | usb3->fs_un1.fs_u2.cs_nifree = | |
563 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
564 | usb3->fs_un1.fs_u2.cs_nffree = | |
565 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
566 | } else { | |
567 | usb1->fs_cstotal.cs_ndir = | |
568 | cpu_to_fs32(sb, uspi->cs_total.cs_ndir); | |
569 | usb1->fs_cstotal.cs_nbfree = | |
570 | cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); | |
571 | usb1->fs_cstotal.cs_nifree = | |
572 | cpu_to_fs32(sb, uspi->cs_total.cs_nifree); | |
573 | usb1->fs_cstotal.cs_nffree = | |
574 | cpu_to_fs32(sb, uspi->cs_total.cs_nffree); | |
575 | } | |
576 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); | |
3313e292 | 577 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
ee3ffd6c ED |
578 | UFSD("EXIT\n"); |
579 | } | |
580 | ||
581 | /** | |
582 | * ufs_put_super_internal() - put on-disk intrenal structures | |
583 | * @sb: pointer to super_block structure | |
584 | * Put on-disk structures associated with cylinder groups | |
585 | * and write them back to disk, also update cs_total on disk | |
586 | */ | |
587 | static void ufs_put_super_internal(struct super_block *sb) | |
588 | { | |
589 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
590 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
591 | struct ufs_buffer_head * ubh; |
592 | unsigned char * base, * space; | |
593 | unsigned blks, size, i; | |
ee3ffd6c | 594 | |
1da177e4 | 595 | |
abf5d15f | 596 | UFSD("ENTER\n"); |
ee3ffd6c | 597 | ufs_put_cstotal(sb); |
1da177e4 LT |
598 | size = uspi->s_cssize; |
599 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
e295cfcb | 600 | base = space = (char*) sbi->s_csp; |
1da177e4 LT |
601 | for (i = 0; i < blks; i += uspi->s_fpb) { |
602 | size = uspi->s_bsize; | |
603 | if (i + uspi->s_fpb > blks) | |
604 | size = (blks - i) * uspi->s_fsize; | |
3313e292 | 605 | |
1da177e4 | 606 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
3313e292 | 607 | |
1da177e4 LT |
608 | ubh_memcpyubh (ubh, space, size); |
609 | space += size; | |
610 | ubh_mark_buffer_uptodate (ubh, 1); | |
611 | ubh_mark_buffer_dirty (ubh); | |
612 | ubh_brelse (ubh); | |
613 | } | |
614 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
615 | ufs_put_cylinder (sb, i); | |
616 | kfree (sbi->s_ucpi[i]); | |
617 | } | |
618 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
619 | kfree (sbi->s_ucpi[i]); | |
620 | for (i = 0; i < uspi->s_ncg; i++) | |
621 | brelse (sbi->s_ucg[i]); | |
622 | kfree (sbi->s_ucg); | |
623 | kfree (base); | |
abf5d15f | 624 | UFSD("EXIT\n"); |
1da177e4 LT |
625 | } |
626 | ||
627 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) | |
628 | { | |
629 | struct ufs_sb_info * sbi; | |
630 | struct ufs_sb_private_info * uspi; | |
631 | struct ufs_super_block_first * usb1; | |
632 | struct ufs_super_block_second * usb2; | |
633 | struct ufs_super_block_third * usb3; | |
1da177e4 LT |
634 | struct ufs_buffer_head * ubh; |
635 | struct inode *inode; | |
636 | unsigned block_size, super_block_size; | |
637 | unsigned flags; | |
7b4ee73e | 638 | unsigned super_block_offset; |
9e6766cc | 639 | unsigned maxsymlen; |
b55c460d | 640 | int ret = -EINVAL; |
1da177e4 LT |
641 | |
642 | uspi = NULL; | |
643 | ubh = NULL; | |
644 | flags = 0; | |
645 | ||
abf5d15f | 646 | UFSD("ENTER\n"); |
1da177e4 | 647 | |
f8314dc6 | 648 | sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); |
1da177e4 LT |
649 | if (!sbi) |
650 | goto failed_nomem; | |
651 | sb->s_fs_info = sbi; | |
1da177e4 | 652 | |
abf5d15f | 653 | UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); |
1da177e4 LT |
654 | |
655 | #ifndef CONFIG_UFS_FS_WRITE | |
656 | if (!(sb->s_flags & MS_RDONLY)) { | |
657 | printk("ufs was compiled with read-only support, " | |
658 | "can't be mounted as read-write\n"); | |
659 | goto failed; | |
660 | } | |
661 | #endif | |
662 | /* | |
663 | * Set default mount options | |
664 | * Parse mount options | |
665 | */ | |
666 | sbi->s_mount_opt = 0; | |
667 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
668 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
669 | printk("wrong mount options\n"); | |
670 | goto failed; | |
671 | } | |
672 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
673 | if (!silent) | |
674 | printk("You didn't specify the type of your ufs filesystem\n\n" | |
675 | "mount -t ufs -o ufstype=" | |
c690a722 | 676 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
1da177e4 LT |
677 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
678 | "default is ufstype=old\n"); | |
679 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
680 | } | |
681 | ||
252e211e MF |
682 | uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL); |
683 | sbi->s_uspi = uspi; | |
1da177e4 LT |
684 | if (!uspi) |
685 | goto failed; | |
f336953b | 686 | uspi->s_dirblksize = UFS_SECTOR_SIZE; |
7b4ee73e E |
687 | super_block_offset=UFS_SBLOCK; |
688 | ||
1da177e4 LT |
689 | /* Keep 2Gig file limit. Some UFS variants need to override |
690 | this but as I don't know which I'll let those in the know loosen | |
691 | the rules */ | |
1da177e4 LT |
692 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
693 | case UFS_MOUNT_UFSTYPE_44BSD: | |
abf5d15f | 694 | UFSD("ufstype=44bsd\n"); |
1da177e4 LT |
695 | uspi->s_fsize = block_size = 512; |
696 | uspi->s_fmask = ~(512 - 1); | |
697 | uspi->s_fshift = 9; | |
698 | uspi->s_sbsize = super_block_size = 1536; | |
699 | uspi->s_sbbase = 0; | |
700 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
701 | break; | |
702 | case UFS_MOUNT_UFSTYPE_UFS2: | |
abf5d15f | 703 | UFSD("ufstype=ufs2\n"); |
7b4ee73e | 704 | super_block_offset=SBLOCK_UFS2; |
1da177e4 LT |
705 | uspi->s_fsize = block_size = 512; |
706 | uspi->s_fmask = ~(512 - 1); | |
707 | uspi->s_fshift = 9; | |
708 | uspi->s_sbsize = super_block_size = 1536; | |
709 | uspi->s_sbbase = 0; | |
710 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
1da177e4 LT |
711 | break; |
712 | ||
713 | case UFS_MOUNT_UFSTYPE_SUN: | |
abf5d15f | 714 | UFSD("ufstype=sun\n"); |
1da177e4 LT |
715 | uspi->s_fsize = block_size = 1024; |
716 | uspi->s_fmask = ~(1024 - 1); | |
717 | uspi->s_fshift = 10; | |
718 | uspi->s_sbsize = super_block_size = 2048; | |
719 | uspi->s_sbbase = 0; | |
252e211e | 720 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
721 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; |
722 | break; | |
723 | ||
252e211e MF |
724 | case UFS_MOUNT_UFSTYPE_SUNOS: |
725 | UFSD(("ufstype=sunos\n")) | |
726 | uspi->s_fsize = block_size = 1024; | |
727 | uspi->s_fmask = ~(1024 - 1); | |
728 | uspi->s_fshift = 10; | |
729 | uspi->s_sbsize = 2048; | |
730 | super_block_size = 2048; | |
731 | uspi->s_sbbase = 0; | |
732 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ | |
733 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; | |
734 | break; | |
735 | ||
1da177e4 | 736 | case UFS_MOUNT_UFSTYPE_SUNx86: |
abf5d15f | 737 | UFSD("ufstype=sunx86\n"); |
1da177e4 LT |
738 | uspi->s_fsize = block_size = 1024; |
739 | uspi->s_fmask = ~(1024 - 1); | |
740 | uspi->s_fshift = 10; | |
741 | uspi->s_sbsize = super_block_size = 2048; | |
742 | uspi->s_sbbase = 0; | |
252e211e | 743 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
744 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; |
745 | break; | |
746 | ||
747 | case UFS_MOUNT_UFSTYPE_OLD: | |
abf5d15f | 748 | UFSD("ufstype=old\n"); |
1da177e4 LT |
749 | uspi->s_fsize = block_size = 1024; |
750 | uspi->s_fmask = ~(1024 - 1); | |
751 | uspi->s_fshift = 10; | |
752 | uspi->s_sbsize = super_block_size = 2048; | |
753 | uspi->s_sbbase = 0; | |
754 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
755 | if (!(sb->s_flags & MS_RDONLY)) { | |
756 | if (!silent) | |
757 | printk(KERN_INFO "ufstype=old is supported read-only\n"); | |
758 | sb->s_flags |= MS_RDONLY; | |
759 | } | |
760 | break; | |
761 | ||
762 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
abf5d15f | 763 | UFSD("ufstype=nextstep\n"); |
1da177e4 LT |
764 | uspi->s_fsize = block_size = 1024; |
765 | uspi->s_fmask = ~(1024 - 1); | |
766 | uspi->s_fshift = 10; | |
767 | uspi->s_sbsize = super_block_size = 2048; | |
768 | uspi->s_sbbase = 0; | |
0c664f97 | 769 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
770 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
771 | if (!(sb->s_flags & MS_RDONLY)) { | |
772 | if (!silent) | |
773 | printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); | |
774 | sb->s_flags |= MS_RDONLY; | |
775 | } | |
776 | break; | |
777 | ||
778 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
abf5d15f | 779 | UFSD("ufstype=nextstep-cd\n"); |
1da177e4 LT |
780 | uspi->s_fsize = block_size = 2048; |
781 | uspi->s_fmask = ~(2048 - 1); | |
782 | uspi->s_fshift = 11; | |
783 | uspi->s_sbsize = super_block_size = 2048; | |
784 | uspi->s_sbbase = 0; | |
0c664f97 | 785 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
786 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
787 | if (!(sb->s_flags & MS_RDONLY)) { | |
788 | if (!silent) | |
789 | printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); | |
790 | sb->s_flags |= MS_RDONLY; | |
791 | } | |
792 | break; | |
793 | ||
794 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
abf5d15f | 795 | UFSD("ufstype=openstep\n"); |
1da177e4 LT |
796 | uspi->s_fsize = block_size = 1024; |
797 | uspi->s_fmask = ~(1024 - 1); | |
798 | uspi->s_fshift = 10; | |
799 | uspi->s_sbsize = super_block_size = 2048; | |
800 | uspi->s_sbbase = 0; | |
f336953b | 801 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
802 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
803 | if (!(sb->s_flags & MS_RDONLY)) { | |
804 | if (!silent) | |
805 | printk(KERN_INFO "ufstype=openstep is supported read-only\n"); | |
806 | sb->s_flags |= MS_RDONLY; | |
807 | } | |
808 | break; | |
809 | ||
810 | case UFS_MOUNT_UFSTYPE_HP: | |
abf5d15f | 811 | UFSD("ufstype=hp\n"); |
1da177e4 LT |
812 | uspi->s_fsize = block_size = 1024; |
813 | uspi->s_fmask = ~(1024 - 1); | |
814 | uspi->s_fshift = 10; | |
815 | uspi->s_sbsize = super_block_size = 2048; | |
816 | uspi->s_sbbase = 0; | |
817 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
818 | if (!(sb->s_flags & MS_RDONLY)) { | |
819 | if (!silent) | |
820 | printk(KERN_INFO "ufstype=hp is supported read-only\n"); | |
821 | sb->s_flags |= MS_RDONLY; | |
822 | } | |
823 | break; | |
824 | default: | |
825 | if (!silent) | |
826 | printk("unknown ufstype\n"); | |
827 | goto failed; | |
828 | } | |
829 | ||
830 | again: | |
831 | if (!sb_set_blocksize(sb, block_size)) { | |
832 | printk(KERN_ERR "UFS: failed to set blocksize\n"); | |
833 | goto failed; | |
834 | } | |
835 | ||
836 | /* | |
837 | * read ufs super block from device | |
838 | */ | |
7b4ee73e E |
839 | |
840 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); | |
841 | ||
1da177e4 LT |
842 | if (!ubh) |
843 | goto failed; | |
844 | ||
7b4ee73e E |
845 | usb1 = ubh_get_usb_first(uspi); |
846 | usb2 = ubh_get_usb_second(uspi); | |
847 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 848 | |
252e211e MF |
849 | /* Sort out mod used on SunOS 4.1.3 for fs_state */ |
850 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
851 | if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && | |
852 | (uspi->s_postblformat != UFS_42POSTBLFMT)) { | |
853 | flags &= ~UFS_ST_MASK; | |
854 | flags |= UFS_ST_SUN; | |
855 | } | |
856 | ||
1da177e4 LT |
857 | /* |
858 | * Check ufs magic number | |
859 | */ | |
860 | sbi->s_bytesex = BYTESEX_LE; | |
861 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
862 | case UFS_MAGIC: | |
863 | case UFS2_MAGIC: | |
864 | case UFS_MAGIC_LFN: | |
865 | case UFS_MAGIC_FEA: | |
866 | case UFS_MAGIC_4GB: | |
867 | goto magic_found; | |
868 | } | |
869 | sbi->s_bytesex = BYTESEX_BE; | |
870 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
871 | case UFS_MAGIC: | |
872 | case UFS2_MAGIC: | |
873 | case UFS_MAGIC_LFN: | |
874 | case UFS_MAGIC_FEA: | |
875 | case UFS_MAGIC_4GB: | |
876 | goto magic_found; | |
877 | } | |
878 | ||
879 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
880 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
881 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
882 | && uspi->s_sbbase < 256) { | |
883 | ubh_brelse_uspi(uspi); | |
884 | ubh = NULL; | |
885 | uspi->s_sbbase += 8; | |
886 | goto again; | |
887 | } | |
888 | if (!silent) | |
889 | printk("ufs_read_super: bad magic number\n"); | |
890 | goto failed; | |
891 | ||
892 | magic_found: | |
893 | /* | |
894 | * Check block and fragment sizes | |
895 | */ | |
896 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
897 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
898 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
899 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
900 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
901 | ||
9e8c4273 | 902 | if (!is_power_of_2(uspi->s_fsize)) { |
1da177e4 LT |
903 | printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", |
904 | uspi->s_fsize); | |
905 | goto failed; | |
906 | } | |
907 | if (uspi->s_fsize < 512) { | |
908 | printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", | |
909 | uspi->s_fsize); | |
910 | goto failed; | |
911 | } | |
912 | if (uspi->s_fsize > 4096) { | |
913 | printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", | |
914 | uspi->s_fsize); | |
915 | goto failed; | |
916 | } | |
9e8c4273 | 917 | if (!is_power_of_2(uspi->s_bsize)) { |
1da177e4 LT |
918 | printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", |
919 | uspi->s_bsize); | |
920 | goto failed; | |
921 | } | |
922 | if (uspi->s_bsize < 4096) { | |
923 | printk(KERN_ERR "ufs_read_super: block size %u is too small\n", | |
924 | uspi->s_bsize); | |
925 | goto failed; | |
926 | } | |
927 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
928 | printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", | |
929 | uspi->s_bsize / uspi->s_fsize); | |
930 | goto failed; | |
931 | } | |
932 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
933 | ubh_brelse_uspi(uspi); | |
934 | ubh = NULL; | |
935 | block_size = uspi->s_fsize; | |
936 | super_block_size = uspi->s_sbsize; | |
abf5d15f | 937 | UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
1da177e4 LT |
938 | goto again; |
939 | } | |
940 | ||
f664f1f9 | 941 | sbi->s_flags = flags;/*after that line some functions use s_flags*/ |
3313e292 | 942 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
1da177e4 LT |
943 | |
944 | /* | |
945 | * Check, if file system was correctly unmounted. | |
946 | * If not, make it read only. | |
947 | */ | |
f664f1f9 AM |
948 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || |
949 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
950 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
951 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
952 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
953 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
1da177e4 LT |
954 | switch(usb1->fs_clean) { |
955 | case UFS_FSCLEAN: | |
abf5d15f | 956 | UFSD("fs is clean\n"); |
1da177e4 LT |
957 | break; |
958 | case UFS_FSSTABLE: | |
abf5d15f | 959 | UFSD("fs is stable\n"); |
1da177e4 LT |
960 | break; |
961 | case UFS_FSOSF1: | |
abf5d15f | 962 | UFSD("fs is DEC OSF/1\n"); |
1da177e4 LT |
963 | break; |
964 | case UFS_FSACTIVE: | |
965 | printk("ufs_read_super: fs is active\n"); | |
966 | sb->s_flags |= MS_RDONLY; | |
967 | break; | |
968 | case UFS_FSBAD: | |
969 | printk("ufs_read_super: fs is bad\n"); | |
970 | sb->s_flags |= MS_RDONLY; | |
971 | break; | |
972 | default: | |
973 | printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); | |
974 | sb->s_flags |= MS_RDONLY; | |
975 | break; | |
976 | } | |
ee3ffd6c | 977 | } else { |
1da177e4 LT |
978 | printk("ufs_read_super: fs needs fsck\n"); |
979 | sb->s_flags |= MS_RDONLY; | |
980 | } | |
981 | ||
982 | /* | |
983 | * Read ufs_super_block into internal data structures | |
984 | */ | |
985 | sb->s_op = &ufs_super_ops; | |
986 | sb->dq_op = NULL; /***/ | |
987 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); | |
988 | ||
989 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
990 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
991 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
992 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
993 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
994 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
995 | ||
996 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
647b7e87 ED |
997 | uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); |
998 | uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); | |
999 | } else { | |
1da177e4 LT |
1000 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); |
1001 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
1002 | } | |
1003 | ||
1004 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
1005 | /* s_bsize already set */ | |
1006 | /* s_fsize already set */ | |
1007 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
1008 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
1009 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
1010 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1011 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
1012 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
abf5d15f ED |
1013 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, |
1014 | uspi->s_fshift); | |
1da177e4 LT |
1015 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); |
1016 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
1017 | /* s_sbsize already set */ | |
1018 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
1019 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
1020 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
1021 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
1022 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
1023 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
1024 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
1025 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
3313e292 ED |
1026 | |
1027 | if (uspi->fs_magic == UFS2_MAGIC) | |
1028 | uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); | |
1029 | else | |
1030 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
1031 | ||
1da177e4 LT |
1032 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); |
1033 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
1034 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
1035 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
1036 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
1037 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
1038 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
647b7e87 ED |
1039 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); |
1040 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); | |
1da177e4 LT |
1041 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); |
1042 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
1da177e4 LT |
1043 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); |
1044 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
1045 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
1046 | ||
1047 | /* | |
1048 | * Compute another frequently used values | |
1049 | */ | |
1050 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
abf5d15f | 1051 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1052 | uspi->s_apbshift = uspi->s_bshift - 3; |
abf5d15f | 1053 | else |
1da177e4 | 1054 | uspi->s_apbshift = uspi->s_bshift - 2; |
abf5d15f | 1055 | |
1da177e4 LT |
1056 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
1057 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
1058 | uspi->s_apb = 1 << uspi->s_apbshift; | |
1059 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
1060 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
1061 | uspi->s_apbmask = uspi->s_apb - 1; | |
1062 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
1063 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
1064 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
1065 | uspi->s_bpf = uspi->s_fsize << 3; | |
1066 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
1067 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
90b315af ED |
1068 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || |
1069 | (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) | |
1da177e4 | 1070 | uspi->s_maxsymlinklen = |
647b7e87 | 1071 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); |
1da177e4 | 1072 | |
9e6766cc DG |
1073 | if (uspi->fs_magic == UFS2_MAGIC) |
1074 | maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); | |
1075 | else | |
1076 | maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); | |
1077 | if (uspi->s_maxsymlinklen > maxsymlen) { | |
1078 | ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " | |
1079 | "fast symlink size (%u)\n", uspi->s_maxsymlinklen); | |
1080 | uspi->s_maxsymlinklen = maxsymlen; | |
1081 | } | |
1082 | ||
b55c460d DH |
1083 | inode = ufs_iget(sb, UFS_ROOTINO); |
1084 | if (IS_ERR(inode)) { | |
1085 | ret = PTR_ERR(inode); | |
1da177e4 | 1086 | goto failed; |
b55c460d | 1087 | } |
1da177e4 | 1088 | sb->s_root = d_alloc_root(inode); |
b55c460d DH |
1089 | if (!sb->s_root) { |
1090 | ret = -ENOMEM; | |
1da177e4 | 1091 | goto dalloc_failed; |
b55c460d | 1092 | } |
1da177e4 | 1093 | |
ee3ffd6c | 1094 | ufs_setup_cstotal(sb); |
1da177e4 LT |
1095 | /* |
1096 | * Read cylinder group structures | |
1097 | */ | |
1098 | if (!(sb->s_flags & MS_RDONLY)) | |
1099 | if (!ufs_read_cylinder_structures(sb)) | |
1100 | goto failed; | |
1101 | ||
abf5d15f | 1102 | UFSD("EXIT\n"); |
1da177e4 LT |
1103 | return 0; |
1104 | ||
1105 | dalloc_failed: | |
1106 | iput(inode); | |
1107 | failed: | |
f99d49ad JJ |
1108 | if (ubh) |
1109 | ubh_brelse_uspi (uspi); | |
1110 | kfree (uspi); | |
1111 | kfree(sbi); | |
1da177e4 | 1112 | sb->s_fs_info = NULL; |
abf5d15f | 1113 | UFSD("EXIT (FAILED)\n"); |
b55c460d | 1114 | return ret; |
1da177e4 LT |
1115 | |
1116 | failed_nomem: | |
abf5d15f | 1117 | UFSD("EXIT (NOMEM)\n"); |
1da177e4 LT |
1118 | return -ENOMEM; |
1119 | } | |
1120 | ||
647b7e87 ED |
1121 | static void ufs_write_super(struct super_block *sb) |
1122 | { | |
1da177e4 LT |
1123 | struct ufs_sb_private_info * uspi; |
1124 | struct ufs_super_block_first * usb1; | |
1125 | struct ufs_super_block_third * usb3; | |
1126 | unsigned flags; | |
1127 | ||
1128 | lock_kernel(); | |
abf5d15f | 1129 | UFSD("ENTER\n"); |
1da177e4 LT |
1130 | flags = UFS_SB(sb)->s_flags; |
1131 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e E |
1132 | usb1 = ubh_get_usb_first(uspi); |
1133 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1134 | |
1135 | if (!(sb->s_flags & MS_RDONLY)) { | |
1136 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
1137 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
252e211e | 1138 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1da177e4 LT |
1139 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1140 | ufs_set_fs_state(sb, usb1, usb3, | |
1141 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
ee3ffd6c | 1142 | ufs_put_cstotal(sb); |
1da177e4 LT |
1143 | } |
1144 | sb->s_dirt = 0; | |
abf5d15f | 1145 | UFSD("EXIT\n"); |
1da177e4 LT |
1146 | unlock_kernel(); |
1147 | } | |
1148 | ||
abf5d15f | 1149 | static void ufs_put_super(struct super_block *sb) |
1da177e4 LT |
1150 | { |
1151 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
1152 | ||
abf5d15f | 1153 | UFSD("ENTER\n"); |
1da177e4 LT |
1154 | |
1155 | if (!(sb->s_flags & MS_RDONLY)) | |
ee3ffd6c | 1156 | ufs_put_super_internal(sb); |
1da177e4 LT |
1157 | |
1158 | ubh_brelse_uspi (sbi->s_uspi); | |
1159 | kfree (sbi->s_uspi); | |
1160 | kfree (sbi); | |
1161 | sb->s_fs_info = NULL; | |
647b7e87 | 1162 | UFSD("EXIT\n"); |
1da177e4 LT |
1163 | return; |
1164 | } | |
1165 | ||
1166 | ||
1167 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) | |
1168 | { | |
1169 | struct ufs_sb_private_info * uspi; | |
1170 | struct ufs_super_block_first * usb1; | |
1171 | struct ufs_super_block_third * usb3; | |
1172 | unsigned new_mount_opt, ufstype; | |
1173 | unsigned flags; | |
1174 | ||
1175 | uspi = UFS_SB(sb)->s_uspi; | |
1176 | flags = UFS_SB(sb)->s_flags; | |
7b4ee73e E |
1177 | usb1 = ubh_get_usb_first(uspi); |
1178 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1179 | |
1180 | /* | |
1181 | * Allow the "check" option to be passed as a remount option. | |
1182 | * It is not possible to change ufstype option during remount | |
1183 | */ | |
1184 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1185 | new_mount_opt = 0; | |
1186 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
1187 | if (!ufs_parse_options (data, &new_mount_opt)) | |
1188 | return -EINVAL; | |
1189 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
1190 | new_mount_opt |= ufstype; | |
ee3ffd6c | 1191 | } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
1da177e4 LT |
1192 | printk("ufstype can't be changed during remount\n"); |
1193 | return -EINVAL; | |
1194 | } | |
1195 | ||
1196 | if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { | |
1197 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | /* | |
1202 | * fs was mouted as rw, remounting ro | |
1203 | */ | |
1204 | if (*mount_flags & MS_RDONLY) { | |
ee3ffd6c | 1205 | ufs_put_super_internal(sb); |
1da177e4 LT |
1206 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
1207 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
252e211e | 1208 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1da177e4 LT |
1209 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1210 | ufs_set_fs_state(sb, usb1, usb3, | |
1211 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1212 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1da177e4 LT |
1213 | sb->s_dirt = 0; |
1214 | sb->s_flags |= MS_RDONLY; | |
ee3ffd6c | 1215 | } else { |
1da177e4 LT |
1216 | /* |
1217 | * fs was mounted as ro, remounting rw | |
1218 | */ | |
1da177e4 LT |
1219 | #ifndef CONFIG_UFS_FS_WRITE |
1220 | printk("ufs was compiled with read-only support, " | |
1221 | "can't be mounted as read-write\n"); | |
1222 | return -EINVAL; | |
1223 | #else | |
1224 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
252e211e | 1225 | ufstype != UFS_MOUNT_UFSTYPE_SUNOS && |
1da177e4 | 1226 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && |
cbcae39f ED |
1227 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && |
1228 | ufstype != UFS_MOUNT_UFSTYPE_UFS2) { | |
1da177e4 LT |
1229 | printk("this ufstype is read-only supported\n"); |
1230 | return -EINVAL; | |
1231 | } | |
ee3ffd6c | 1232 | if (!ufs_read_cylinder_structures(sb)) { |
1da177e4 LT |
1233 | printk("failed during remounting\n"); |
1234 | return -EPERM; | |
1235 | } | |
1236 | sb->s_flags &= ~MS_RDONLY; | |
1237 | #endif | |
1238 | } | |
1239 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
1240 | return 0; | |
1241 | } | |
1242 | ||
2a9807c0 ED |
1243 | static int ufs_show_options(struct seq_file *seq, struct vfsmount *vfs) |
1244 | { | |
1245 | struct ufs_sb_info *sbi = UFS_SB(vfs->mnt_sb); | |
1246 | unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
a447c093 | 1247 | const struct match_token *tp = tokens; |
2a9807c0 ED |
1248 | |
1249 | while (tp->token != Opt_onerror_panic && tp->token != mval) | |
1250 | ++tp; | |
1251 | BUG_ON(tp->token == Opt_onerror_panic); | |
1252 | seq_printf(seq, ",%s", tp->pattern); | |
1253 | ||
1254 | mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR; | |
1255 | while (tp->token != Opt_err && tp->token != mval) | |
1256 | ++tp; | |
1257 | BUG_ON(tp->token == Opt_err); | |
1258 | seq_printf(seq, ",%s", tp->pattern); | |
1259 | ||
1260 | return 0; | |
1261 | } | |
1262 | ||
647b7e87 | 1263 | static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 1264 | { |
726c3342 | 1265 | struct super_block *sb = dentry->d_sb; |
647b7e87 ED |
1266 | struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; |
1267 | unsigned flags = UFS_SB(sb)->s_flags; | |
1268 | struct ufs_super_block_first *usb1; | |
1269 | struct ufs_super_block_second *usb2; | |
1270 | struct ufs_super_block_third *usb3; | |
1da177e4 LT |
1271 | |
1272 | lock_kernel(); | |
1273 | ||
647b7e87 ED |
1274 | usb1 = ubh_get_usb_first(uspi); |
1275 | usb2 = ubh_get_usb_second(uspi); | |
1276 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 1277 | |
1da177e4 LT |
1278 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
1279 | buf->f_type = UFS2_MAGIC; | |
647b7e87 | 1280 | buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); |
647b7e87 | 1281 | } else { |
1da177e4 LT |
1282 | buf->f_type = UFS_MAGIC; |
1283 | buf->f_blocks = uspi->s_dsize; | |
1da177e4 | 1284 | } |
ee3ffd6c ED |
1285 | buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + |
1286 | uspi->cs_total.cs_nffree; | |
1287 | buf->f_ffree = uspi->cs_total.cs_nifree; | |
1da177e4 LT |
1288 | buf->f_bsize = sb->s_blocksize; |
1289 | buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) | |
1290 | ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; | |
1291 | buf->f_files = uspi->s_ncg * uspi->s_ipg; | |
1292 | buf->f_namelen = UFS_MAXNAMLEN; | |
1293 | ||
1294 | unlock_kernel(); | |
1295 | ||
1296 | return 0; | |
1297 | } | |
1298 | ||
e18b890b | 1299 | static struct kmem_cache * ufs_inode_cachep; |
1da177e4 LT |
1300 | |
1301 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1302 | { | |
1303 | struct ufs_inode_info *ei; | |
e94b1766 | 1304 | ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
1305 | if (!ei) |
1306 | return NULL; | |
1307 | ei->vfs_inode.i_version = 1; | |
1308 | return &ei->vfs_inode; | |
1309 | } | |
1310 | ||
1311 | static void ufs_destroy_inode(struct inode *inode) | |
1312 | { | |
1313 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); | |
1314 | } | |
1315 | ||
51cc5068 | 1316 | static void init_once(void *foo) |
1da177e4 LT |
1317 | { |
1318 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1319 | ||
a35afb83 | 1320 | inode_init_once(&ei->vfs_inode); |
1da177e4 | 1321 | } |
20c2df83 | 1322 | |
1da177e4 LT |
1323 | static int init_inodecache(void) |
1324 | { | |
1325 | ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", | |
1326 | sizeof(struct ufs_inode_info), | |
fffb60f9 PJ |
1327 | 0, (SLAB_RECLAIM_ACCOUNT| |
1328 | SLAB_MEM_SPREAD), | |
20c2df83 | 1329 | init_once); |
1da177e4 LT |
1330 | if (ufs_inode_cachep == NULL) |
1331 | return -ENOMEM; | |
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static void destroy_inodecache(void) | |
1336 | { | |
1a1d92c1 | 1337 | kmem_cache_destroy(ufs_inode_cachep); |
1da177e4 LT |
1338 | } |
1339 | ||
1340 | #ifdef CONFIG_QUOTA | |
1341 | static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t); | |
1342 | static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t); | |
1343 | #endif | |
1344 | ||
ee9b6d61 | 1345 | static const struct super_operations ufs_super_ops = { |
1da177e4 LT |
1346 | .alloc_inode = ufs_alloc_inode, |
1347 | .destroy_inode = ufs_destroy_inode, | |
1da177e4 LT |
1348 | .write_inode = ufs_write_inode, |
1349 | .delete_inode = ufs_delete_inode, | |
1350 | .put_super = ufs_put_super, | |
1351 | .write_super = ufs_write_super, | |
1352 | .statfs = ufs_statfs, | |
1353 | .remount_fs = ufs_remount, | |
2a9807c0 | 1354 | .show_options = ufs_show_options, |
1da177e4 LT |
1355 | #ifdef CONFIG_QUOTA |
1356 | .quota_read = ufs_quota_read, | |
1357 | .quota_write = ufs_quota_write, | |
1358 | #endif | |
1359 | }; | |
1360 | ||
1361 | #ifdef CONFIG_QUOTA | |
1362 | ||
1363 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
1364 | * acquiring the locks... As quota files are never truncated and quota code | |
1365 | * itself serializes the operations (and noone else should touch the files) | |
1366 | * we don't have to be afraid of races */ | |
1367 | static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data, | |
1368 | size_t len, loff_t off) | |
1369 | { | |
1370 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1371 | sector_t blk = off >> sb->s_blocksize_bits; | |
1372 | int err = 0; | |
1373 | int offset = off & (sb->s_blocksize - 1); | |
1374 | int tocopy; | |
1375 | size_t toread; | |
1376 | struct buffer_head *bh; | |
1377 | loff_t i_size = i_size_read(inode); | |
1378 | ||
1379 | if (off > i_size) | |
1380 | return 0; | |
1381 | if (off+len > i_size) | |
1382 | len = i_size-off; | |
1383 | toread = len; | |
1384 | while (toread > 0) { | |
1385 | tocopy = sb->s_blocksize - offset < toread ? | |
1386 | sb->s_blocksize - offset : toread; | |
1387 | ||
1388 | bh = ufs_bread(inode, blk, 0, &err); | |
1389 | if (err) | |
1390 | return err; | |
1391 | if (!bh) /* A hole? */ | |
1392 | memset(data, 0, tocopy); | |
1393 | else { | |
1394 | memcpy(data, bh->b_data+offset, tocopy); | |
1395 | brelse(bh); | |
1396 | } | |
1397 | offset = 0; | |
1398 | toread -= tocopy; | |
1399 | data += tocopy; | |
1400 | blk++; | |
1401 | } | |
1402 | return len; | |
1403 | } | |
1404 | ||
1405 | /* Write to quotafile */ | |
1406 | static ssize_t ufs_quota_write(struct super_block *sb, int type, | |
1407 | const char *data, size_t len, loff_t off) | |
1408 | { | |
1409 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1410 | sector_t blk = off >> sb->s_blocksize_bits; | |
1411 | int err = 0; | |
1412 | int offset = off & (sb->s_blocksize - 1); | |
1413 | int tocopy; | |
1414 | size_t towrite = len; | |
1415 | struct buffer_head *bh; | |
1416 | ||
5c81a419 | 1417 | mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); |
1da177e4 LT |
1418 | while (towrite > 0) { |
1419 | tocopy = sb->s_blocksize - offset < towrite ? | |
1420 | sb->s_blocksize - offset : towrite; | |
1421 | ||
1422 | bh = ufs_bread(inode, blk, 1, &err); | |
1423 | if (!bh) | |
1424 | goto out; | |
1425 | lock_buffer(bh); | |
1426 | memcpy(bh->b_data+offset, data, tocopy); | |
1427 | flush_dcache_page(bh->b_page); | |
1428 | set_buffer_uptodate(bh); | |
1429 | mark_buffer_dirty(bh); | |
1430 | unlock_buffer(bh); | |
1431 | brelse(bh); | |
1432 | offset = 0; | |
1433 | towrite -= tocopy; | |
1434 | data += tocopy; | |
1435 | blk++; | |
1436 | } | |
1437 | out: | |
15b2fe39 | 1438 | if (len == towrite) { |
1b1dcc1b | 1439 | mutex_unlock(&inode->i_mutex); |
1da177e4 | 1440 | return err; |
15b2fe39 | 1441 | } |
1da177e4 LT |
1442 | if (inode->i_size < off+len-towrite) |
1443 | i_size_write(inode, off+len-towrite); | |
1444 | inode->i_version++; | |
1445 | inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; | |
1446 | mark_inode_dirty(inode); | |
1b1dcc1b | 1447 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
1448 | return len - towrite; |
1449 | } | |
1450 | ||
1451 | #endif | |
1452 | ||
454e2398 DH |
1453 | static int ufs_get_sb(struct file_system_type *fs_type, |
1454 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) | |
1da177e4 | 1455 | { |
454e2398 | 1456 | return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt); |
1da177e4 LT |
1457 | } |
1458 | ||
1459 | static struct file_system_type ufs_fs_type = { | |
1460 | .owner = THIS_MODULE, | |
1461 | .name = "ufs", | |
1462 | .get_sb = ufs_get_sb, | |
1463 | .kill_sb = kill_block_super, | |
1464 | .fs_flags = FS_REQUIRES_DEV, | |
1465 | }; | |
1466 | ||
1467 | static int __init init_ufs_fs(void) | |
1468 | { | |
1469 | int err = init_inodecache(); | |
1470 | if (err) | |
1471 | goto out1; | |
1472 | err = register_filesystem(&ufs_fs_type); | |
1473 | if (err) | |
1474 | goto out; | |
1475 | return 0; | |
1476 | out: | |
1477 | destroy_inodecache(); | |
1478 | out1: | |
1479 | return err; | |
1480 | } | |
1481 | ||
1482 | static void __exit exit_ufs_fs(void) | |
1483 | { | |
1484 | unregister_filesystem(&ufs_fs_type); | |
1485 | destroy_inodecache(); | |
1486 | } | |
1487 | ||
1488 | module_init(init_ufs_fs) | |
1489 | module_exit(exit_ufs_fs) | |
1490 | MODULE_LICENSE("GPL"); |