]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/ufs/super.c | |
3 | * | |
4 | * Copyright (C) 1998 | |
5 | * Daniel Pirkl <daniel.pirkl@email.cz> | |
6 | * Charles University, Faculty of Mathematics and Physics | |
7 | */ | |
8 | ||
9 | /* Derived from | |
10 | * | |
11 | * linux/fs/ext2/super.c | |
12 | * | |
13 | * Copyright (C) 1992, 1993, 1994, 1995 | |
14 | * Remy Card (card@masi.ibp.fr) | |
15 | * Laboratoire MASI - Institut Blaise Pascal | |
16 | * Universite Pierre et Marie Curie (Paris VI) | |
17 | * | |
18 | * from | |
19 | * | |
20 | * linux/fs/minix/inode.c | |
21 | * | |
22 | * Copyright (C) 1991, 1992 Linus Torvalds | |
23 | * | |
24 | * Big-endian to little-endian byte-swapping/bitmaps by | |
25 | * David S. Miller (davem@caip.rutgers.edu), 1995 | |
26 | */ | |
27 | ||
28 | /* | |
29 | * Inspired by | |
30 | * | |
31 | * linux/fs/ufs/super.c | |
32 | * | |
33 | * Copyright (C) 1996 | |
34 | * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) | |
35 | * Laboratory for Computer Science Research Computing Facility | |
36 | * Rutgers, The State University of New Jersey | |
37 | * | |
38 | * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) | |
39 | * | |
40 | * Kernel module support added on 96/04/26 by | |
41 | * Stefan Reinauer <stepan@home.culture.mipt.ru> | |
42 | * | |
43 | * Module usage counts added on 96/04/29 by | |
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 | ||
f3e2a520 | 68 | #include <linux/exportfs.h> |
1da177e4 LT |
69 | #include <linux/module.h> |
70 | #include <linux/bitops.h> | |
71 | ||
72 | #include <stdarg.h> | |
73 | ||
74 | #include <asm/uaccess.h> | |
1da177e4 LT |
75 | |
76 | #include <linux/errno.h> | |
77 | #include <linux/fs.h> | |
1da177e4 LT |
78 | #include <linux/slab.h> |
79 | #include <linux/time.h> | |
80 | #include <linux/stat.h> | |
81 | #include <linux/string.h> | |
82 | #include <linux/blkdev.h> | |
83 | #include <linux/init.h> | |
84 | #include <linux/parser.h> | |
1da177e4 LT |
85 | #include <linux/buffer_head.h> |
86 | #include <linux/vfs.h> | |
9e8c4273 | 87 | #include <linux/log2.h> |
2a9807c0 ED |
88 | #include <linux/mount.h> |
89 | #include <linux/seq_file.h> | |
1da177e4 | 90 | |
e5420598 | 91 | #include "ufs_fs.h" |
bcd6d4ec | 92 | #include "ufs.h" |
1da177e4 LT |
93 | #include "swab.h" |
94 | #include "util.h" | |
95 | ||
788257d6 AB |
96 | void lock_ufs(struct super_block *sb) |
97 | { | |
98 | #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT) | |
99 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
100 | ||
101 | mutex_lock(&sbi->mutex); | |
102 | sbi->mutex_owner = current; | |
103 | #endif | |
104 | } | |
105 | ||
106 | void unlock_ufs(struct super_block *sb) | |
107 | { | |
108 | #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT) | |
109 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
110 | ||
111 | sbi->mutex_owner = NULL; | |
112 | mutex_unlock(&sbi->mutex); | |
113 | #endif | |
114 | } | |
115 | ||
f3e2a520 AD |
116 | static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) |
117 | { | |
118 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
119 | struct inode *inode; | |
120 | ||
121 | if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg) | |
122 | return ERR_PTR(-ESTALE); | |
123 | ||
124 | inode = ufs_iget(sb, ino); | |
125 | if (IS_ERR(inode)) | |
126 | return ERR_CAST(inode); | |
127 | if (generation && inode->i_generation != generation) { | |
128 | iput(inode); | |
129 | return ERR_PTR(-ESTALE); | |
130 | } | |
131 | return inode; | |
132 | } | |
133 | ||
134 | static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
135 | int fh_len, int fh_type) | |
136 | { | |
137 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
138 | } | |
139 | ||
140 | static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
141 | int fh_len, int fh_type) | |
142 | { | |
143 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
144 | } | |
145 | ||
146 | static struct dentry *ufs_get_parent(struct dentry *child) | |
147 | { | |
26fe5750 | 148 | struct qstr dot_dot = QSTR_INIT("..", 2); |
f3e2a520 AD |
149 | ino_t ino; |
150 | ||
151 | ino = ufs_inode_by_name(child->d_inode, &dot_dot); | |
152 | if (!ino) | |
153 | return ERR_PTR(-ENOENT); | |
154 | return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino)); | |
155 | } | |
156 | ||
157 | static const struct export_operations ufs_export_ops = { | |
158 | .fh_to_dentry = ufs_fh_to_dentry, | |
159 | .fh_to_parent = ufs_fh_to_parent, | |
160 | .get_parent = ufs_get_parent, | |
161 | }; | |
162 | ||
abf5d15f | 163 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
164 | /* |
165 | * Print contents of ufs_super_block, useful for debugging | |
166 | */ | |
3313e292 | 167 | static void ufs_print_super_stuff(struct super_block *sb, |
647b7e87 ED |
168 | struct ufs_super_block_first *usb1, |
169 | struct ufs_super_block_second *usb2, | |
170 | struct ufs_super_block_third *usb3) | |
1da177e4 | 171 | { |
3313e292 ED |
172 | u32 magic = fs32_to_cpu(sb, usb3->fs_magic); |
173 | ||
a9814c5d FF |
174 | pr_debug("ufs_print_super_stuff\n"); |
175 | pr_debug(" magic: 0x%x\n", magic); | |
3313e292 | 176 | if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { |
a9814c5d FF |
177 | pr_debug(" fs_size: %llu\n", (unsigned long long) |
178 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); | |
179 | pr_debug(" fs_dsize: %llu\n", (unsigned long long) | |
180 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); | |
181 | pr_debug(" bsize: %u\n", | |
182 | fs32_to_cpu(sb, usb1->fs_bsize)); | |
183 | pr_debug(" fsize: %u\n", | |
184 | fs32_to_cpu(sb, usb1->fs_fsize)); | |
185 | pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); | |
186 | pr_debug(" fs_sblockloc: %llu\n", (unsigned long long) | |
187 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); | |
188 | pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long) | |
189 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); | |
190 | pr_debug(" cs_nbfree(No of free blocks): %llu\n", | |
191 | (unsigned long long) | |
192 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); | |
193 | pr_info(" cs_nifree(Num of free inodes): %llu\n", | |
194 | (unsigned long long) | |
195 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); | |
196 | pr_info(" cs_nffree(Num of free frags): %llu\n", | |
197 | (unsigned long long) | |
198 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); | |
199 | pr_info(" fs_maxsymlinklen: %u\n", | |
200 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); | |
647b7e87 | 201 | } else { |
a9814c5d FF |
202 | pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); |
203 | pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
204 | pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
205 | pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
206 | pr_debug(" cgoffset: %u\n", | |
207 | fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
208 | pr_debug(" ~cgmask: 0x%x\n", | |
209 | ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
210 | pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
211 | pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
212 | pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
213 | pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
214 | pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
215 | pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
216 | pr_debug(" fragshift: %u\n", | |
217 | fs32_to_cpu(sb, usb1->fs_fragshift)); | |
218 | pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
219 | pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
220 | pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
221 | pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
222 | pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
223 | pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
224 | pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
225 | pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
226 | pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
227 | pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
228 | pr_debug(" fstodb: %u\n", | |
229 | fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
230 | pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
231 | pr_debug(" ndir %u\n", | |
232 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
233 | pr_debug(" nifree %u\n", | |
234 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
235 | pr_debug(" nbfree %u\n", | |
236 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
237 | pr_debug(" nffree %u\n", | |
238 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
647b7e87 | 239 | } |
a9814c5d | 240 | pr_debug("\n"); |
1da177e4 LT |
241 | } |
242 | ||
243 | /* | |
244 | * Print contents of ufs_cylinder_group, useful for debugging | |
245 | */ | |
647b7e87 ED |
246 | static void ufs_print_cylinder_stuff(struct super_block *sb, |
247 | struct ufs_cylinder_group *cg) | |
1da177e4 | 248 | { |
a9814c5d FF |
249 | pr_debug("\nufs_print_cylinder_stuff\n"); |
250 | pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); | |
251 | pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); | |
252 | pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
253 | pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
254 | pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
255 | pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
256 | pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
257 | pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
258 | pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
259 | pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
260 | pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
261 | pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
262 | pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
263 | pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
264 | pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
1da177e4 LT |
265 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), |
266 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
267 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
268 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
a9814c5d FF |
269 | pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); |
270 | pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
271 | pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
272 | pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
273 | pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
274 | pr_debug(" clustersumoff %u\n", | |
275 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
276 | pr_debug(" clusteroff %u\n", | |
277 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
278 | pr_debug(" nclusterblks %u\n", | |
279 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
280 | pr_debug("\n"); | |
1da177e4 | 281 | } |
647b7e87 | 282 | #else |
3313e292 | 283 | # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
647b7e87 | 284 | # define ufs_print_cylinder_stuff(sb, cg) /**/ |
abf5d15f | 285 | #endif /* CONFIG_UFS_DEBUG */ |
1da177e4 | 286 | |
ee9b6d61 | 287 | static const struct super_operations ufs_super_ops; |
1da177e4 | 288 | |
1da177e4 LT |
289 | void ufs_error (struct super_block * sb, const char * function, |
290 | const char * fmt, ...) | |
291 | { | |
292 | struct ufs_sb_private_info * uspi; | |
293 | struct ufs_super_block_first * usb1; | |
7e1e4167 | 294 | struct va_format vaf; |
1da177e4 LT |
295 | va_list args; |
296 | ||
297 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 298 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
299 | |
300 | if (!(sb->s_flags & MS_RDONLY)) { | |
301 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 302 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
9e9ad5f4 | 303 | ufs_mark_sb_dirty(sb); |
1da177e4 LT |
304 | sb->s_flags |= MS_RDONLY; |
305 | } | |
7e1e4167 FF |
306 | va_start(args, fmt); |
307 | vaf.fmt = fmt; | |
308 | vaf.va = &args; | |
1da177e4 LT |
309 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { |
310 | case UFS_MOUNT_ONERROR_PANIC: | |
7e1e4167 FF |
311 | panic("panic (device %s): %s: %pV\n", |
312 | sb->s_id, function, &vaf); | |
1da177e4 LT |
313 | |
314 | case UFS_MOUNT_ONERROR_LOCK: | |
315 | case UFS_MOUNT_ONERROR_UMOUNT: | |
316 | case UFS_MOUNT_ONERROR_REPAIR: | |
7e1e4167 FF |
317 | pr_crit("error (device %s): %s: %pV\n", |
318 | sb->s_id, function, &vaf); | |
319 | } | |
320 | va_end(args); | |
1da177e4 LT |
321 | } |
322 | ||
323 | void ufs_panic (struct super_block * sb, const char * function, | |
324 | const char * fmt, ...) | |
325 | { | |
326 | struct ufs_sb_private_info * uspi; | |
327 | struct ufs_super_block_first * usb1; | |
7e1e4167 | 328 | struct va_format vaf; |
1da177e4 LT |
329 | va_list args; |
330 | ||
331 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 332 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
333 | |
334 | if (!(sb->s_flags & MS_RDONLY)) { | |
335 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 336 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
9e9ad5f4 | 337 | ufs_mark_sb_dirty(sb); |
1da177e4 | 338 | } |
7e1e4167 FF |
339 | va_start(args, fmt); |
340 | vaf.fmt = fmt; | |
341 | vaf.va = &args; | |
1da177e4 | 342 | sb->s_flags |= MS_RDONLY; |
7e1e4167 FF |
343 | pr_crit("panic (device %s): %s: %pV\n", |
344 | sb->s_id, function, &vaf); | |
345 | va_end(args); | |
1da177e4 LT |
346 | } |
347 | ||
348 | void ufs_warning (struct super_block * sb, const char * function, | |
349 | const char * fmt, ...) | |
350 | { | |
7e1e4167 | 351 | struct va_format vaf; |
1da177e4 LT |
352 | va_list args; |
353 | ||
7e1e4167 FF |
354 | va_start(args, fmt); |
355 | vaf.fmt = fmt; | |
356 | vaf.va = &args; | |
357 | pr_warn("(device %s): %s: %pV\n", | |
358 | sb->s_id, function, &vaf); | |
359 | va_end(args); | |
1da177e4 LT |
360 | } |
361 | ||
362 | enum { | |
2a9807c0 ED |
363 | Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
364 | Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, | |
365 | Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, | |
366 | Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, | |
367 | Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, | |
368 | Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, | |
369 | Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, | |
370 | Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, | |
371 | Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, | |
372 | Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, | |
373 | Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, | |
374 | Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, | |
375 | Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, | |
376 | Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, | |
377 | Opt_err | |
1da177e4 LT |
378 | }; |
379 | ||
a447c093 | 380 | static const match_table_t tokens = { |
1da177e4 LT |
381 | {Opt_type_old, "ufstype=old"}, |
382 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
383 | {Opt_type_sun, "ufstype=sun"}, | |
252e211e | 384 | {Opt_type_sunos, "ufstype=sunos"}, |
1da177e4 LT |
385 | {Opt_type_44bsd, "ufstype=44bsd"}, |
386 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
387 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
388 | {Opt_type_hp, "ufstype=hp"}, | |
389 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
390 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
391 | {Opt_type_openstep, "ufstype=openstep"}, | |
2a9807c0 | 392 | /*end of possible ufs types */ |
1da177e4 LT |
393 | {Opt_onerror_panic, "onerror=panic"}, |
394 | {Opt_onerror_lock, "onerror=lock"}, | |
395 | {Opt_onerror_umount, "onerror=umount"}, | |
396 | {Opt_onerror_repair, "onerror=repair"}, | |
397 | {Opt_err, NULL} | |
398 | }; | |
399 | ||
400 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
401 | { | |
402 | char * p; | |
403 | ||
abf5d15f | 404 | UFSD("ENTER\n"); |
1da177e4 LT |
405 | |
406 | if (!options) | |
407 | return 1; | |
408 | ||
409 | while ((p = strsep(&options, ",")) != NULL) { | |
410 | substring_t args[MAX_OPT_ARGS]; | |
411 | int token; | |
412 | if (!*p) | |
413 | continue; | |
414 | ||
415 | token = match_token(p, tokens, args); | |
416 | switch (token) { | |
417 | case Opt_type_old: | |
418 | ufs_clear_opt (*mount_options, UFSTYPE); | |
419 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
420 | break; | |
421 | case Opt_type_sunx86: | |
422 | ufs_clear_opt (*mount_options, UFSTYPE); | |
423 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
424 | break; | |
425 | case Opt_type_sun: | |
426 | ufs_clear_opt (*mount_options, UFSTYPE); | |
427 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
428 | break; | |
252e211e MF |
429 | case Opt_type_sunos: |
430 | ufs_clear_opt(*mount_options, UFSTYPE); | |
431 | ufs_set_opt(*mount_options, UFSTYPE_SUNOS); | |
432 | break; | |
1da177e4 LT |
433 | case Opt_type_44bsd: |
434 | ufs_clear_opt (*mount_options, UFSTYPE); | |
435 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
436 | break; | |
437 | case Opt_type_ufs2: | |
438 | ufs_clear_opt(*mount_options, UFSTYPE); | |
439 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
440 | break; | |
441 | case Opt_type_hp: | |
442 | ufs_clear_opt (*mount_options, UFSTYPE); | |
443 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
444 | break; | |
445 | case Opt_type_nextstepcd: | |
446 | ufs_clear_opt (*mount_options, UFSTYPE); | |
447 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
448 | break; | |
449 | case Opt_type_nextstep: | |
450 | ufs_clear_opt (*mount_options, UFSTYPE); | |
451 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
452 | break; | |
453 | case Opt_type_openstep: | |
454 | ufs_clear_opt (*mount_options, UFSTYPE); | |
455 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
456 | break; | |
457 | case Opt_onerror_panic: | |
458 | ufs_clear_opt (*mount_options, ONERROR); | |
459 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
460 | break; | |
461 | case Opt_onerror_lock: | |
462 | ufs_clear_opt (*mount_options, ONERROR); | |
463 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
464 | break; | |
465 | case Opt_onerror_umount: | |
466 | ufs_clear_opt (*mount_options, ONERROR); | |
467 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
468 | break; | |
469 | case Opt_onerror_repair: | |
de771bda | 470 | pr_err("Unable to do repair on error, will lock lock instead\n"); |
1da177e4 LT |
471 | ufs_clear_opt (*mount_options, ONERROR); |
472 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
473 | break; | |
474 | default: | |
de771bda | 475 | pr_err("Invalid option: \"%s\" or missing value\n", p); |
1da177e4 LT |
476 | return 0; |
477 | } | |
478 | } | |
479 | return 1; | |
480 | } | |
481 | ||
482 | /* | |
25985edc LDM |
483 | * Different types of UFS hold fs_cstotal in different |
484 | * places, and use different data structure for it. | |
485 | * To make things simpler we just copy fs_cstotal to ufs_sb_private_info | |
1da177e4 | 486 | */ |
ee3ffd6c | 487 | static void ufs_setup_cstotal(struct super_block *sb) |
e295cfcb | 488 | { |
647b7e87 ED |
489 | struct ufs_sb_info *sbi = UFS_SB(sb); |
490 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
ee3ffd6c ED |
491 | struct ufs_super_block_first *usb1; |
492 | struct ufs_super_block_second *usb2; | |
647b7e87 | 493 | struct ufs_super_block_third *usb3; |
ee3ffd6c ED |
494 | unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
495 | ||
496 | UFSD("ENTER, mtype=%u\n", mtype); | |
497 | usb1 = ubh_get_usb_first(uspi); | |
498 | usb2 = ubh_get_usb_second(uspi); | |
499 | usb3 = ubh_get_usb_third(uspi); | |
500 | ||
501 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
502 | (usb1->fs_flags & UFS_FLAGS_UPDATED)) || | |
503 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { | |
504 | /*we have statistic in different place, then usual*/ | |
505 | uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); | |
506 | uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); | |
507 | uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); | |
508 | uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); | |
509 | } else { | |
510 | uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); | |
511 | uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); | |
512 | uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
513 | uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
514 | } | |
515 | UFSD("EXIT\n"); | |
516 | } | |
517 | ||
518 | /* | |
519 | * Read on-disk structures associated with cylinder groups | |
520 | */ | |
521 | static int ufs_read_cylinder_structures(struct super_block *sb) | |
522 | { | |
523 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
524 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
525 | struct ufs_buffer_head * ubh; |
526 | unsigned char * base, * space; | |
527 | unsigned size, blks, i; | |
ee3ffd6c | 528 | |
abf5d15f | 529 | UFSD("ENTER\n"); |
1da177e4 | 530 | |
1da177e4 LT |
531 | /* |
532 | * Read cs structures from (usually) first data block | |
533 | * on the device. | |
534 | */ | |
535 | size = uspi->s_cssize; | |
536 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
788257d6 | 537 | base = space = kmalloc(size, GFP_NOFS); |
1da177e4 LT |
538 | if (!base) |
539 | goto failed; | |
e295cfcb | 540 | sbi->s_csp = (struct ufs_csum *)space; |
1da177e4 LT |
541 | for (i = 0; i < blks; i += uspi->s_fpb) { |
542 | size = uspi->s_bsize; | |
543 | if (i + uspi->s_fpb > blks) | |
544 | size = (blks - i) * uspi->s_fsize; | |
545 | ||
3313e292 | 546 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
7b4ee73e E |
547 | |
548 | if (!ubh) | |
549 | goto failed; | |
550 | ||
551 | ubh_ubhcpymem (space, ubh, size); | |
7b4ee73e | 552 | |
1da177e4 LT |
553 | space += size; |
554 | ubh_brelse (ubh); | |
555 | ubh = NULL; | |
556 | } | |
557 | ||
558 | /* | |
559 | * Read cylinder group (we read only first fragment from block | |
560 | * at this time) and prepare internal data structures for cg caching. | |
561 | */ | |
788257d6 | 562 | if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS))) |
1da177e4 LT |
563 | goto failed; |
564 | for (i = 0; i < uspi->s_ncg; i++) | |
565 | sbi->s_ucg[i] = NULL; | |
566 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
567 | sbi->s_ucpi[i] = NULL; | |
568 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
569 | } | |
570 | for (i = 0; i < uspi->s_ncg; i++) { | |
abf5d15f | 571 | UFSD("read cg %u\n", i); |
1da177e4 LT |
572 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
573 | goto failed; | |
574 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
575 | goto failed; | |
647b7e87 | 576 | |
1da177e4 | 577 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
1da177e4 LT |
578 | } |
579 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
788257d6 | 580 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS))) |
1da177e4 LT |
581 | goto failed; |
582 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
583 | } | |
584 | sbi->s_cg_loaded = 0; | |
abf5d15f | 585 | UFSD("EXIT\n"); |
1da177e4 LT |
586 | return 1; |
587 | ||
588 | failed: | |
f99d49ad | 589 | kfree (base); |
1da177e4 LT |
590 | if (sbi->s_ucg) { |
591 | for (i = 0; i < uspi->s_ncg; i++) | |
f99d49ad JJ |
592 | if (sbi->s_ucg[i]) |
593 | brelse (sbi->s_ucg[i]); | |
1da177e4 LT |
594 | kfree (sbi->s_ucg); |
595 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
f99d49ad | 596 | kfree (sbi->s_ucpi[i]); |
1da177e4 | 597 | } |
abf5d15f | 598 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
599 | return 0; |
600 | } | |
601 | ||
602 | /* | |
ee3ffd6c | 603 | * Sync our internal copy of fs_cstotal with disk |
1da177e4 | 604 | */ |
ee3ffd6c | 605 | static void ufs_put_cstotal(struct super_block *sb) |
e295cfcb | 606 | { |
ee3ffd6c ED |
607 | unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
608 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
609 | struct ufs_super_block_first *usb1; | |
610 | struct ufs_super_block_second *usb2; | |
611 | struct ufs_super_block_third *usb3; | |
612 | ||
613 | UFSD("ENTER\n"); | |
614 | usb1 = ubh_get_usb_first(uspi); | |
615 | usb2 = ubh_get_usb_second(uspi); | |
616 | usb3 = ubh_get_usb_third(uspi); | |
617 | ||
618 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
619 | (usb1->fs_flags & UFS_FLAGS_UPDATED)) || | |
620 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { | |
621 | /*we have statistic in different place, then usual*/ | |
622 | usb2->fs_un.fs_u2.cs_ndir = | |
623 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
624 | usb2->fs_un.fs_u2.cs_nbfree = | |
625 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
626 | usb3->fs_un1.fs_u2.cs_nifree = | |
627 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
628 | usb3->fs_un1.fs_u2.cs_nffree = | |
629 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
630 | } else { | |
631 | usb1->fs_cstotal.cs_ndir = | |
632 | cpu_to_fs32(sb, uspi->cs_total.cs_ndir); | |
633 | usb1->fs_cstotal.cs_nbfree = | |
634 | cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); | |
635 | usb1->fs_cstotal.cs_nifree = | |
636 | cpu_to_fs32(sb, uspi->cs_total.cs_nifree); | |
637 | usb1->fs_cstotal.cs_nffree = | |
638 | cpu_to_fs32(sb, uspi->cs_total.cs_nffree); | |
639 | } | |
640 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); | |
3313e292 | 641 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
ee3ffd6c ED |
642 | UFSD("EXIT\n"); |
643 | } | |
644 | ||
645 | /** | |
646 | * ufs_put_super_internal() - put on-disk intrenal structures | |
647 | * @sb: pointer to super_block structure | |
648 | * Put on-disk structures associated with cylinder groups | |
649 | * and write them back to disk, also update cs_total on disk | |
650 | */ | |
651 | static void ufs_put_super_internal(struct super_block *sb) | |
652 | { | |
653 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
654 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
655 | struct ufs_buffer_head * ubh; |
656 | unsigned char * base, * space; | |
657 | unsigned blks, size, i; | |
ee3ffd6c | 658 | |
1da177e4 | 659 | |
abf5d15f | 660 | UFSD("ENTER\n"); |
6cfd0148 | 661 | |
ee3ffd6c | 662 | ufs_put_cstotal(sb); |
1da177e4 LT |
663 | size = uspi->s_cssize; |
664 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
e295cfcb | 665 | base = space = (char*) sbi->s_csp; |
1da177e4 LT |
666 | for (i = 0; i < blks; i += uspi->s_fpb) { |
667 | size = uspi->s_bsize; | |
668 | if (i + uspi->s_fpb > blks) | |
669 | size = (blks - i) * uspi->s_fsize; | |
3313e292 | 670 | |
1da177e4 | 671 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
3313e292 | 672 | |
1da177e4 LT |
673 | ubh_memcpyubh (ubh, space, size); |
674 | space += size; | |
675 | ubh_mark_buffer_uptodate (ubh, 1); | |
676 | ubh_mark_buffer_dirty (ubh); | |
677 | ubh_brelse (ubh); | |
678 | } | |
679 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
680 | ufs_put_cylinder (sb, i); | |
681 | kfree (sbi->s_ucpi[i]); | |
682 | } | |
683 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
684 | kfree (sbi->s_ucpi[i]); | |
685 | for (i = 0; i < uspi->s_ncg; i++) | |
686 | brelse (sbi->s_ucg[i]); | |
687 | kfree (sbi->s_ucg); | |
688 | kfree (base); | |
6cfd0148 | 689 | |
abf5d15f | 690 | UFSD("EXIT\n"); |
1da177e4 LT |
691 | } |
692 | ||
7bd54ef7 AB |
693 | static int ufs_sync_fs(struct super_block *sb, int wait) |
694 | { | |
695 | struct ufs_sb_private_info * uspi; | |
696 | struct ufs_super_block_first * usb1; | |
697 | struct ufs_super_block_third * usb3; | |
698 | unsigned flags; | |
699 | ||
700 | lock_ufs(sb); | |
7bd54ef7 AB |
701 | |
702 | UFSD("ENTER\n"); | |
703 | ||
704 | flags = UFS_SB(sb)->s_flags; | |
705 | uspi = UFS_SB(sb)->s_uspi; | |
706 | usb1 = ubh_get_usb_first(uspi); | |
707 | usb3 = ubh_get_usb_third(uspi); | |
708 | ||
709 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
710 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
711 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
712 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
713 | ufs_set_fs_state(sb, usb1, usb3, | |
714 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
715 | ufs_put_cstotal(sb); | |
7bd54ef7 AB |
716 | |
717 | UFSD("EXIT\n"); | |
7bd54ef7 AB |
718 | unlock_ufs(sb); |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
9e9ad5f4 | 723 | static void delayed_sync_fs(struct work_struct *work) |
7bd54ef7 | 724 | { |
9e9ad5f4 AB |
725 | struct ufs_sb_info *sbi; |
726 | ||
727 | sbi = container_of(work, struct ufs_sb_info, sync_work.work); | |
728 | ||
729 | spin_lock(&sbi->work_lock); | |
730 | sbi->work_queued = 0; | |
731 | spin_unlock(&sbi->work_lock); | |
732 | ||
733 | ufs_sync_fs(sbi->sb, 1); | |
734 | } | |
735 | ||
736 | void ufs_mark_sb_dirty(struct super_block *sb) | |
737 | { | |
738 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
739 | unsigned long delay; | |
740 | ||
741 | spin_lock(&sbi->work_lock); | |
742 | if (!sbi->work_queued) { | |
743 | delay = msecs_to_jiffies(dirty_writeback_interval * 10); | |
744 | queue_delayed_work(system_long_wq, &sbi->sync_work, delay); | |
745 | sbi->work_queued = 1; | |
746 | } | |
747 | spin_unlock(&sbi->work_lock); | |
7bd54ef7 AB |
748 | } |
749 | ||
750 | static void ufs_put_super(struct super_block *sb) | |
751 | { | |
752 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
753 | ||
754 | UFSD("ENTER\n"); | |
755 | ||
756 | if (!(sb->s_flags & MS_RDONLY)) | |
757 | ufs_put_super_internal(sb); | |
9e9ad5f4 | 758 | cancel_delayed_work_sync(&sbi->sync_work); |
7bd54ef7 AB |
759 | |
760 | ubh_brelse_uspi (sbi->s_uspi); | |
761 | kfree (sbi->s_uspi); | |
0244756e | 762 | mutex_destroy(&sbi->mutex); |
7bd54ef7 AB |
763 | kfree (sbi); |
764 | sb->s_fs_info = NULL; | |
765 | UFSD("EXIT\n"); | |
766 | return; | |
767 | } | |
768 | ||
1da177e4 LT |
769 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) |
770 | { | |
771 | struct ufs_sb_info * sbi; | |
772 | struct ufs_sb_private_info * uspi; | |
773 | struct ufs_super_block_first * usb1; | |
774 | struct ufs_super_block_second * usb2; | |
775 | struct ufs_super_block_third * usb3; | |
1da177e4 LT |
776 | struct ufs_buffer_head * ubh; |
777 | struct inode *inode; | |
778 | unsigned block_size, super_block_size; | |
779 | unsigned flags; | |
7b4ee73e | 780 | unsigned super_block_offset; |
9e6766cc | 781 | unsigned maxsymlen; |
b55c460d | 782 | int ret = -EINVAL; |
1da177e4 LT |
783 | |
784 | uspi = NULL; | |
785 | ubh = NULL; | |
786 | flags = 0; | |
787 | ||
abf5d15f | 788 | UFSD("ENTER\n"); |
0244756e FF |
789 | |
790 | #ifndef CONFIG_UFS_FS_WRITE | |
791 | if (!(sb->s_flags & MS_RDONLY)) { | |
a9814c5d | 792 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); |
0244756e FF |
793 | return -EROFS; |
794 | } | |
795 | #endif | |
1da177e4 | 796 | |
f8314dc6 | 797 | sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); |
1da177e4 LT |
798 | if (!sbi) |
799 | goto failed_nomem; | |
800 | sb->s_fs_info = sbi; | |
9e9ad5f4 | 801 | sbi->sb = sb; |
1da177e4 | 802 | |
abf5d15f | 803 | UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); |
1da177e4 | 804 | |
788257d6 | 805 | mutex_init(&sbi->mutex); |
9e9ad5f4 AB |
806 | spin_lock_init(&sbi->work_lock); |
807 | INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); | |
1da177e4 LT |
808 | /* |
809 | * Set default mount options | |
810 | * Parse mount options | |
811 | */ | |
812 | sbi->s_mount_opt = 0; | |
813 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
814 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
a9814c5d | 815 | pr_err("wrong mount options\n"); |
1da177e4 LT |
816 | goto failed; |
817 | } | |
818 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
819 | if (!silent) | |
a9814c5d | 820 | pr_err("You didn't specify the type of your ufs filesystem\n\n" |
1da177e4 | 821 | "mount -t ufs -o ufstype=" |
c690a722 | 822 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
1da177e4 LT |
823 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
824 | "default is ufstype=old\n"); | |
825 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
826 | } | |
827 | ||
252e211e MF |
828 | uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL); |
829 | sbi->s_uspi = uspi; | |
1da177e4 LT |
830 | if (!uspi) |
831 | goto failed; | |
f336953b | 832 | uspi->s_dirblksize = UFS_SECTOR_SIZE; |
7b4ee73e E |
833 | super_block_offset=UFS_SBLOCK; |
834 | ||
1da177e4 LT |
835 | /* Keep 2Gig file limit. Some UFS variants need to override |
836 | this but as I don't know which I'll let those in the know loosen | |
837 | the rules */ | |
1da177e4 LT |
838 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
839 | case UFS_MOUNT_UFSTYPE_44BSD: | |
abf5d15f | 840 | UFSD("ufstype=44bsd\n"); |
1da177e4 LT |
841 | uspi->s_fsize = block_size = 512; |
842 | uspi->s_fmask = ~(512 - 1); | |
843 | uspi->s_fshift = 9; | |
844 | uspi->s_sbsize = super_block_size = 1536; | |
845 | uspi->s_sbbase = 0; | |
846 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
847 | break; | |
848 | case UFS_MOUNT_UFSTYPE_UFS2: | |
abf5d15f | 849 | UFSD("ufstype=ufs2\n"); |
7b4ee73e | 850 | super_block_offset=SBLOCK_UFS2; |
1da177e4 LT |
851 | uspi->s_fsize = block_size = 512; |
852 | uspi->s_fmask = ~(512 - 1); | |
853 | uspi->s_fshift = 9; | |
854 | uspi->s_sbsize = super_block_size = 1536; | |
855 | uspi->s_sbbase = 0; | |
856 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
1da177e4 LT |
857 | break; |
858 | ||
859 | case UFS_MOUNT_UFSTYPE_SUN: | |
abf5d15f | 860 | UFSD("ufstype=sun\n"); |
1da177e4 LT |
861 | uspi->s_fsize = block_size = 1024; |
862 | uspi->s_fmask = ~(1024 - 1); | |
863 | uspi->s_fshift = 10; | |
864 | uspi->s_sbsize = super_block_size = 2048; | |
865 | uspi->s_sbbase = 0; | |
252e211e | 866 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
867 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; |
868 | break; | |
869 | ||
252e211e | 870 | case UFS_MOUNT_UFSTYPE_SUNOS: |
d4beaabd | 871 | UFSD("ufstype=sunos\n"); |
252e211e MF |
872 | uspi->s_fsize = block_size = 1024; |
873 | uspi->s_fmask = ~(1024 - 1); | |
874 | uspi->s_fshift = 10; | |
875 | uspi->s_sbsize = 2048; | |
876 | super_block_size = 2048; | |
877 | uspi->s_sbbase = 0; | |
878 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ | |
879 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; | |
880 | break; | |
881 | ||
1da177e4 | 882 | case UFS_MOUNT_UFSTYPE_SUNx86: |
abf5d15f | 883 | UFSD("ufstype=sunx86\n"); |
1da177e4 LT |
884 | uspi->s_fsize = block_size = 1024; |
885 | uspi->s_fmask = ~(1024 - 1); | |
886 | uspi->s_fshift = 10; | |
887 | uspi->s_sbsize = super_block_size = 2048; | |
888 | uspi->s_sbbase = 0; | |
252e211e | 889 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
890 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; |
891 | break; | |
892 | ||
893 | case UFS_MOUNT_UFSTYPE_OLD: | |
abf5d15f | 894 | UFSD("ufstype=old\n"); |
1da177e4 LT |
895 | uspi->s_fsize = block_size = 1024; |
896 | uspi->s_fmask = ~(1024 - 1); | |
897 | uspi->s_fshift = 10; | |
898 | uspi->s_sbsize = super_block_size = 2048; | |
899 | uspi->s_sbbase = 0; | |
900 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
901 | if (!(sb->s_flags & MS_RDONLY)) { | |
902 | if (!silent) | |
a9814c5d | 903 | pr_info("ufstype=old is supported read-only\n"); |
1da177e4 LT |
904 | sb->s_flags |= MS_RDONLY; |
905 | } | |
906 | break; | |
907 | ||
908 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
abf5d15f | 909 | UFSD("ufstype=nextstep\n"); |
1da177e4 LT |
910 | uspi->s_fsize = block_size = 1024; |
911 | uspi->s_fmask = ~(1024 - 1); | |
912 | uspi->s_fshift = 10; | |
913 | uspi->s_sbsize = super_block_size = 2048; | |
914 | uspi->s_sbbase = 0; | |
0c664f97 | 915 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
916 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
917 | if (!(sb->s_flags & MS_RDONLY)) { | |
918 | if (!silent) | |
a9814c5d | 919 | pr_info("ufstype=nextstep is supported read-only\n"); |
1da177e4 LT |
920 | sb->s_flags |= MS_RDONLY; |
921 | } | |
922 | break; | |
923 | ||
924 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
abf5d15f | 925 | UFSD("ufstype=nextstep-cd\n"); |
1da177e4 LT |
926 | uspi->s_fsize = block_size = 2048; |
927 | uspi->s_fmask = ~(2048 - 1); | |
928 | uspi->s_fshift = 11; | |
929 | uspi->s_sbsize = super_block_size = 2048; | |
930 | uspi->s_sbbase = 0; | |
0c664f97 | 931 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
932 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
933 | if (!(sb->s_flags & MS_RDONLY)) { | |
934 | if (!silent) | |
a9814c5d | 935 | pr_info("ufstype=nextstep-cd is supported read-only\n"); |
1da177e4 LT |
936 | sb->s_flags |= MS_RDONLY; |
937 | } | |
938 | break; | |
939 | ||
940 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
abf5d15f | 941 | UFSD("ufstype=openstep\n"); |
1da177e4 LT |
942 | uspi->s_fsize = block_size = 1024; |
943 | uspi->s_fmask = ~(1024 - 1); | |
944 | uspi->s_fshift = 10; | |
945 | uspi->s_sbsize = super_block_size = 2048; | |
946 | uspi->s_sbbase = 0; | |
f336953b | 947 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
948 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
949 | if (!(sb->s_flags & MS_RDONLY)) { | |
950 | if (!silent) | |
a9814c5d | 951 | pr_info("ufstype=openstep is supported read-only\n"); |
1da177e4 LT |
952 | sb->s_flags |= MS_RDONLY; |
953 | } | |
954 | break; | |
955 | ||
956 | case UFS_MOUNT_UFSTYPE_HP: | |
abf5d15f | 957 | UFSD("ufstype=hp\n"); |
1da177e4 LT |
958 | uspi->s_fsize = block_size = 1024; |
959 | uspi->s_fmask = ~(1024 - 1); | |
960 | uspi->s_fshift = 10; | |
961 | uspi->s_sbsize = super_block_size = 2048; | |
962 | uspi->s_sbbase = 0; | |
963 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
964 | if (!(sb->s_flags & MS_RDONLY)) { | |
965 | if (!silent) | |
a9814c5d | 966 | pr_info("ufstype=hp is supported read-only\n"); |
1da177e4 LT |
967 | sb->s_flags |= MS_RDONLY; |
968 | } | |
969 | break; | |
970 | default: | |
971 | if (!silent) | |
a9814c5d | 972 | pr_err("unknown ufstype\n"); |
1da177e4 LT |
973 | goto failed; |
974 | } | |
975 | ||
976 | again: | |
977 | if (!sb_set_blocksize(sb, block_size)) { | |
de771bda | 978 | pr_err("failed to set blocksize\n"); |
1da177e4 LT |
979 | goto failed; |
980 | } | |
981 | ||
982 | /* | |
983 | * read ufs super block from device | |
984 | */ | |
7b4ee73e E |
985 | |
986 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); | |
987 | ||
1da177e4 LT |
988 | if (!ubh) |
989 | goto failed; | |
990 | ||
7b4ee73e E |
991 | usb1 = ubh_get_usb_first(uspi); |
992 | usb2 = ubh_get_usb_second(uspi); | |
993 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 994 | |
252e211e MF |
995 | /* Sort out mod used on SunOS 4.1.3 for fs_state */ |
996 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
997 | if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && | |
998 | (uspi->s_postblformat != UFS_42POSTBLFMT)) { | |
999 | flags &= ~UFS_ST_MASK; | |
1000 | flags |= UFS_ST_SUN; | |
1001 | } | |
1002 | ||
1da177e4 LT |
1003 | /* |
1004 | * Check ufs magic number | |
1005 | */ | |
1006 | sbi->s_bytesex = BYTESEX_LE; | |
1007 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
1008 | case UFS_MAGIC: | |
d27d7a9a | 1009 | case UFS_MAGIC_BW: |
1da177e4 LT |
1010 | case UFS2_MAGIC: |
1011 | case UFS_MAGIC_LFN: | |
1012 | case UFS_MAGIC_FEA: | |
1013 | case UFS_MAGIC_4GB: | |
1014 | goto magic_found; | |
1015 | } | |
1016 | sbi->s_bytesex = BYTESEX_BE; | |
1017 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
1018 | case UFS_MAGIC: | |
d27d7a9a | 1019 | case UFS_MAGIC_BW: |
1da177e4 LT |
1020 | case UFS2_MAGIC: |
1021 | case UFS_MAGIC_LFN: | |
1022 | case UFS_MAGIC_FEA: | |
1023 | case UFS_MAGIC_4GB: | |
1024 | goto magic_found; | |
1025 | } | |
1026 | ||
1027 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
1028 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
1029 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
1030 | && uspi->s_sbbase < 256) { | |
1031 | ubh_brelse_uspi(uspi); | |
1032 | ubh = NULL; | |
1033 | uspi->s_sbbase += 8; | |
1034 | goto again; | |
1035 | } | |
1036 | if (!silent) | |
07bc94fd | 1037 | pr_err("%s(): bad magic number\n", __func__); |
1da177e4 LT |
1038 | goto failed; |
1039 | ||
1040 | magic_found: | |
1041 | /* | |
1042 | * Check block and fragment sizes | |
1043 | */ | |
1044 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
1045 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
1046 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
1047 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1048 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
1049 | ||
9e8c4273 | 1050 | if (!is_power_of_2(uspi->s_fsize)) { |
07bc94fd FF |
1051 | pr_err("%s(): fragment size %u is not a power of 2\n", |
1052 | __func__, uspi->s_fsize); | |
a9814c5d | 1053 | goto failed; |
1da177e4 LT |
1054 | } |
1055 | if (uspi->s_fsize < 512) { | |
07bc94fd FF |
1056 | pr_err("%s(): fragment size %u is too small\n", |
1057 | __func__, uspi->s_fsize); | |
1da177e4 LT |
1058 | goto failed; |
1059 | } | |
1060 | if (uspi->s_fsize > 4096) { | |
07bc94fd FF |
1061 | pr_err("%s(): fragment size %u is too large\n", |
1062 | __func__, uspi->s_fsize); | |
1da177e4 LT |
1063 | goto failed; |
1064 | } | |
9e8c4273 | 1065 | if (!is_power_of_2(uspi->s_bsize)) { |
07bc94fd FF |
1066 | pr_err("%s(): block size %u is not a power of 2\n", |
1067 | __func__, uspi->s_bsize); | |
1da177e4 LT |
1068 | goto failed; |
1069 | } | |
1070 | if (uspi->s_bsize < 4096) { | |
07bc94fd FF |
1071 | pr_err("%s(): block size %u is too small\n", |
1072 | __func__, uspi->s_bsize); | |
1da177e4 LT |
1073 | goto failed; |
1074 | } | |
1075 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
07bc94fd FF |
1076 | pr_err("%s(): too many fragments per block (%u)\n", |
1077 | __func__, uspi->s_bsize / uspi->s_fsize); | |
1da177e4 LT |
1078 | goto failed; |
1079 | } | |
1080 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
1081 | ubh_brelse_uspi(uspi); | |
1082 | ubh = NULL; | |
1083 | block_size = uspi->s_fsize; | |
1084 | super_block_size = uspi->s_sbsize; | |
abf5d15f | 1085 | UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
1da177e4 LT |
1086 | goto again; |
1087 | } | |
1088 | ||
f664f1f9 | 1089 | sbi->s_flags = flags;/*after that line some functions use s_flags*/ |
3313e292 | 1090 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
1da177e4 LT |
1091 | |
1092 | /* | |
1093 | * Check, if file system was correctly unmounted. | |
1094 | * If not, make it read only. | |
1095 | */ | |
f664f1f9 AM |
1096 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || |
1097 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
1098 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
1099 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
1100 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
1101 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
1da177e4 LT |
1102 | switch(usb1->fs_clean) { |
1103 | case UFS_FSCLEAN: | |
abf5d15f | 1104 | UFSD("fs is clean\n"); |
1da177e4 LT |
1105 | break; |
1106 | case UFS_FSSTABLE: | |
abf5d15f | 1107 | UFSD("fs is stable\n"); |
b3a0fd4d AV |
1108 | break; |
1109 | case UFS_FSLOG: | |
1110 | UFSD("fs is logging fs\n"); | |
1da177e4 LT |
1111 | break; |
1112 | case UFS_FSOSF1: | |
abf5d15f | 1113 | UFSD("fs is DEC OSF/1\n"); |
1da177e4 LT |
1114 | break; |
1115 | case UFS_FSACTIVE: | |
07bc94fd | 1116 | pr_err("%s(): fs is active\n", __func__); |
1da177e4 LT |
1117 | sb->s_flags |= MS_RDONLY; |
1118 | break; | |
1119 | case UFS_FSBAD: | |
07bc94fd | 1120 | pr_err("%s(): fs is bad\n", __func__); |
1da177e4 LT |
1121 | sb->s_flags |= MS_RDONLY; |
1122 | break; | |
1123 | default: | |
07bc94fd FF |
1124 | pr_err("%s(): can't grok fs_clean 0x%x\n", |
1125 | __func__, usb1->fs_clean); | |
1da177e4 LT |
1126 | sb->s_flags |= MS_RDONLY; |
1127 | break; | |
1128 | } | |
ee3ffd6c | 1129 | } else { |
07bc94fd | 1130 | pr_err("%s(): fs needs fsck\n", __func__); |
1da177e4 LT |
1131 | sb->s_flags |= MS_RDONLY; |
1132 | } | |
1133 | ||
1134 | /* | |
1135 | * Read ufs_super_block into internal data structures | |
1136 | */ | |
1137 | sb->s_op = &ufs_super_ops; | |
f3e2a520 | 1138 | sb->s_export_op = &ufs_export_ops; |
123e9caf | 1139 | |
1da177e4 LT |
1140 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); |
1141 | ||
1142 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
1143 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
1144 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
1145 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
1146 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
1147 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
1148 | ||
1149 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
647b7e87 ED |
1150 | uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); |
1151 | uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); | |
1152 | } else { | |
1da177e4 LT |
1153 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); |
1154 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
1155 | } | |
1156 | ||
1157 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
1158 | /* s_bsize already set */ | |
1159 | /* s_fsize already set */ | |
1160 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
1161 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
1162 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
1163 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1164 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
1165 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
abf5d15f ED |
1166 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, |
1167 | uspi->s_fshift); | |
1da177e4 LT |
1168 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); |
1169 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
1170 | /* s_sbsize already set */ | |
1171 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
1172 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
1173 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
1174 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
1175 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
1176 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
1177 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
1178 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
3313e292 ED |
1179 | |
1180 | if (uspi->fs_magic == UFS2_MAGIC) | |
1181 | uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); | |
1182 | else | |
1183 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
1184 | ||
1da177e4 LT |
1185 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); |
1186 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
1187 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
1188 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
1189 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
1190 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
1191 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
647b7e87 ED |
1192 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); |
1193 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); | |
1da177e4 LT |
1194 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); |
1195 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
1da177e4 LT |
1196 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); |
1197 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
1198 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
1199 | ||
1200 | /* | |
1201 | * Compute another frequently used values | |
1202 | */ | |
1203 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
abf5d15f | 1204 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1205 | uspi->s_apbshift = uspi->s_bshift - 3; |
abf5d15f | 1206 | else |
1da177e4 | 1207 | uspi->s_apbshift = uspi->s_bshift - 2; |
abf5d15f | 1208 | |
1da177e4 LT |
1209 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
1210 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
1211 | uspi->s_apb = 1 << uspi->s_apbshift; | |
1212 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
1213 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
1214 | uspi->s_apbmask = uspi->s_apb - 1; | |
1215 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
1216 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
1217 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
1218 | uspi->s_bpf = uspi->s_fsize << 3; | |
1219 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
1220 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
90b315af ED |
1221 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || |
1222 | (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) | |
1da177e4 | 1223 | uspi->s_maxsymlinklen = |
647b7e87 | 1224 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); |
1da177e4 | 1225 | |
9e6766cc DG |
1226 | if (uspi->fs_magic == UFS2_MAGIC) |
1227 | maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); | |
1228 | else | |
1229 | maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); | |
1230 | if (uspi->s_maxsymlinklen > maxsymlen) { | |
1231 | ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " | |
1232 | "fast symlink size (%u)\n", uspi->s_maxsymlinklen); | |
1233 | uspi->s_maxsymlinklen = maxsymlen; | |
1234 | } | |
8de52778 | 1235 | sb->s_max_links = UFS_LINK_MAX; |
9e6766cc | 1236 | |
b55c460d DH |
1237 | inode = ufs_iget(sb, UFS_ROOTINO); |
1238 | if (IS_ERR(inode)) { | |
1239 | ret = PTR_ERR(inode); | |
1da177e4 | 1240 | goto failed; |
b55c460d | 1241 | } |
48fde701 | 1242 | sb->s_root = d_make_root(inode); |
b55c460d DH |
1243 | if (!sb->s_root) { |
1244 | ret = -ENOMEM; | |
48fde701 | 1245 | goto failed; |
b55c460d | 1246 | } |
1da177e4 | 1247 | |
ee3ffd6c | 1248 | ufs_setup_cstotal(sb); |
1da177e4 LT |
1249 | /* |
1250 | * Read cylinder group structures | |
1251 | */ | |
1252 | if (!(sb->s_flags & MS_RDONLY)) | |
1253 | if (!ufs_read_cylinder_structures(sb)) | |
1254 | goto failed; | |
1255 | ||
abf5d15f | 1256 | UFSD("EXIT\n"); |
1da177e4 LT |
1257 | return 0; |
1258 | ||
1da177e4 | 1259 | failed: |
0244756e | 1260 | mutex_destroy(&sbi->mutex); |
f99d49ad JJ |
1261 | if (ubh) |
1262 | ubh_brelse_uspi (uspi); | |
1263 | kfree (uspi); | |
1264 | kfree(sbi); | |
1da177e4 | 1265 | sb->s_fs_info = NULL; |
abf5d15f | 1266 | UFSD("EXIT (FAILED)\n"); |
b55c460d | 1267 | return ret; |
1da177e4 LT |
1268 | |
1269 | failed_nomem: | |
abf5d15f | 1270 | UFSD("EXIT (NOMEM)\n"); |
1da177e4 LT |
1271 | return -ENOMEM; |
1272 | } | |
1273 | ||
1da177e4 LT |
1274 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) |
1275 | { | |
1276 | struct ufs_sb_private_info * uspi; | |
1277 | struct ufs_super_block_first * usb1; | |
1278 | struct ufs_super_block_third * usb3; | |
1279 | unsigned new_mount_opt, ufstype; | |
1280 | unsigned flags; | |
337eb00a | 1281 | |
02b9984d | 1282 | sync_filesystem(sb); |
788257d6 | 1283 | lock_ufs(sb); |
1da177e4 LT |
1284 | uspi = UFS_SB(sb)->s_uspi; |
1285 | flags = UFS_SB(sb)->s_flags; | |
7b4ee73e E |
1286 | usb1 = ubh_get_usb_first(uspi); |
1287 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1288 | |
1289 | /* | |
1290 | * Allow the "check" option to be passed as a remount option. | |
1291 | * It is not possible to change ufstype option during remount | |
1292 | */ | |
1293 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1294 | new_mount_opt = 0; | |
1295 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
bbd6851a | 1296 | if (!ufs_parse_options (data, &new_mount_opt)) { |
788257d6 | 1297 | unlock_ufs(sb); |
1da177e4 | 1298 | return -EINVAL; |
bbd6851a | 1299 | } |
1da177e4 LT |
1300 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { |
1301 | new_mount_opt |= ufstype; | |
ee3ffd6c | 1302 | } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
a9814c5d | 1303 | pr_err("ufstype can't be changed during remount\n"); |
788257d6 | 1304 | unlock_ufs(sb); |
1da177e4 LT |
1305 | return -EINVAL; |
1306 | } | |
1307 | ||
1308 | if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { | |
1309 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
788257d6 | 1310 | unlock_ufs(sb); |
1da177e4 LT |
1311 | return 0; |
1312 | } | |
1313 | ||
1314 | /* | |
1315 | * fs was mouted as rw, remounting ro | |
1316 | */ | |
1317 | if (*mount_flags & MS_RDONLY) { | |
ee3ffd6c | 1318 | ufs_put_super_internal(sb); |
1da177e4 LT |
1319 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
1320 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
252e211e | 1321 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1da177e4 LT |
1322 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1323 | ufs_set_fs_state(sb, usb1, usb3, | |
1324 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1325 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1da177e4 | 1326 | sb->s_flags |= MS_RDONLY; |
ee3ffd6c | 1327 | } else { |
1da177e4 LT |
1328 | /* |
1329 | * fs was mounted as ro, remounting rw | |
1330 | */ | |
1da177e4 | 1331 | #ifndef CONFIG_UFS_FS_WRITE |
a9814c5d | 1332 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); |
788257d6 | 1333 | unlock_ufs(sb); |
1da177e4 LT |
1334 | return -EINVAL; |
1335 | #else | |
1336 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
252e211e | 1337 | ufstype != UFS_MOUNT_UFSTYPE_SUNOS && |
1da177e4 | 1338 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && |
cbcae39f ED |
1339 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && |
1340 | ufstype != UFS_MOUNT_UFSTYPE_UFS2) { | |
a9814c5d | 1341 | pr_err("this ufstype is read-only supported\n"); |
788257d6 | 1342 | unlock_ufs(sb); |
1da177e4 LT |
1343 | return -EINVAL; |
1344 | } | |
ee3ffd6c | 1345 | if (!ufs_read_cylinder_structures(sb)) { |
a9814c5d | 1346 | pr_err("failed during remounting\n"); |
788257d6 | 1347 | unlock_ufs(sb); |
1da177e4 LT |
1348 | return -EPERM; |
1349 | } | |
1350 | sb->s_flags &= ~MS_RDONLY; | |
1351 | #endif | |
1352 | } | |
1353 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
788257d6 | 1354 | unlock_ufs(sb); |
1da177e4 LT |
1355 | return 0; |
1356 | } | |
1357 | ||
34c80b1d | 1358 | static int ufs_show_options(struct seq_file *seq, struct dentry *root) |
2a9807c0 | 1359 | { |
34c80b1d | 1360 | struct ufs_sb_info *sbi = UFS_SB(root->d_sb); |
2a9807c0 | 1361 | unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
a447c093 | 1362 | const struct match_token *tp = tokens; |
2a9807c0 ED |
1363 | |
1364 | while (tp->token != Opt_onerror_panic && tp->token != mval) | |
1365 | ++tp; | |
1366 | BUG_ON(tp->token == Opt_onerror_panic); | |
1367 | seq_printf(seq, ",%s", tp->pattern); | |
1368 | ||
1369 | mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR; | |
1370 | while (tp->token != Opt_err && tp->token != mval) | |
1371 | ++tp; | |
1372 | BUG_ON(tp->token == Opt_err); | |
1373 | seq_printf(seq, ",%s", tp->pattern); | |
1374 | ||
1375 | return 0; | |
1376 | } | |
1377 | ||
647b7e87 | 1378 | static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 1379 | { |
726c3342 | 1380 | struct super_block *sb = dentry->d_sb; |
647b7e87 ED |
1381 | struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; |
1382 | unsigned flags = UFS_SB(sb)->s_flags; | |
647b7e87 | 1383 | struct ufs_super_block_third *usb3; |
41d577aa | 1384 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
1da177e4 | 1385 | |
788257d6 | 1386 | lock_ufs(sb); |
1da177e4 | 1387 | |
647b7e87 | 1388 | usb3 = ubh_get_usb_third(uspi); |
1da177e4 | 1389 | |
1da177e4 LT |
1390 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
1391 | buf->f_type = UFS2_MAGIC; | |
647b7e87 | 1392 | buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); |
647b7e87 | 1393 | } else { |
1da177e4 LT |
1394 | buf->f_type = UFS_MAGIC; |
1395 | buf->f_blocks = uspi->s_dsize; | |
1da177e4 | 1396 | } |
ee3ffd6c ED |
1397 | buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + |
1398 | uspi->cs_total.cs_nffree; | |
1399 | buf->f_ffree = uspi->cs_total.cs_nifree; | |
1da177e4 LT |
1400 | buf->f_bsize = sb->s_blocksize; |
1401 | buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) | |
1402 | ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; | |
1403 | buf->f_files = uspi->s_ncg * uspi->s_ipg; | |
1404 | buf->f_namelen = UFS_MAXNAMLEN; | |
41d577aa CL |
1405 | buf->f_fsid.val[0] = (u32)id; |
1406 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
1da177e4 | 1407 | |
788257d6 | 1408 | unlock_ufs(sb); |
1da177e4 LT |
1409 | |
1410 | return 0; | |
1411 | } | |
1412 | ||
e18b890b | 1413 | static struct kmem_cache * ufs_inode_cachep; |
1da177e4 LT |
1414 | |
1415 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1416 | { | |
1417 | struct ufs_inode_info *ei; | |
788257d6 | 1418 | ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS); |
1da177e4 LT |
1419 | if (!ei) |
1420 | return NULL; | |
1421 | ei->vfs_inode.i_version = 1; | |
1422 | return &ei->vfs_inode; | |
1423 | } | |
1424 | ||
fa0d7e3d | 1425 | static void ufs_i_callback(struct rcu_head *head) |
1da177e4 | 1426 | { |
fa0d7e3d | 1427 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
1428 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); |
1429 | } | |
1430 | ||
fa0d7e3d NP |
1431 | static void ufs_destroy_inode(struct inode *inode) |
1432 | { | |
1433 | call_rcu(&inode->i_rcu, ufs_i_callback); | |
1434 | } | |
1435 | ||
51cc5068 | 1436 | static void init_once(void *foo) |
1da177e4 LT |
1437 | { |
1438 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1439 | ||
a35afb83 | 1440 | inode_init_once(&ei->vfs_inode); |
1da177e4 | 1441 | } |
20c2df83 | 1442 | |
76ee4735 | 1443 | static int __init init_inodecache(void) |
1da177e4 LT |
1444 | { |
1445 | ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", | |
1446 | sizeof(struct ufs_inode_info), | |
fffb60f9 PJ |
1447 | 0, (SLAB_RECLAIM_ACCOUNT| |
1448 | SLAB_MEM_SPREAD), | |
20c2df83 | 1449 | init_once); |
1da177e4 LT |
1450 | if (ufs_inode_cachep == NULL) |
1451 | return -ENOMEM; | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | static void destroy_inodecache(void) | |
1456 | { | |
8c0a8537 KS |
1457 | /* |
1458 | * Make sure all delayed rcu free inodes are flushed before we | |
1459 | * destroy cache. | |
1460 | */ | |
1461 | rcu_barrier(); | |
1a1d92c1 | 1462 | kmem_cache_destroy(ufs_inode_cachep); |
1da177e4 LT |
1463 | } |
1464 | ||
ee9b6d61 | 1465 | static const struct super_operations ufs_super_ops = { |
1da177e4 LT |
1466 | .alloc_inode = ufs_alloc_inode, |
1467 | .destroy_inode = ufs_destroy_inode, | |
1da177e4 | 1468 | .write_inode = ufs_write_inode, |
58e8268c | 1469 | .evict_inode = ufs_evict_inode, |
1da177e4 | 1470 | .put_super = ufs_put_super, |
8c800656 | 1471 | .sync_fs = ufs_sync_fs, |
1da177e4 LT |
1472 | .statfs = ufs_statfs, |
1473 | .remount_fs = ufs_remount, | |
2a9807c0 | 1474 | .show_options = ufs_show_options, |
1da177e4 LT |
1475 | }; |
1476 | ||
152a0836 AV |
1477 | static struct dentry *ufs_mount(struct file_system_type *fs_type, |
1478 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1479 | { |
152a0836 | 1480 | return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super); |
1da177e4 LT |
1481 | } |
1482 | ||
1483 | static struct file_system_type ufs_fs_type = { | |
1484 | .owner = THIS_MODULE, | |
1485 | .name = "ufs", | |
152a0836 | 1486 | .mount = ufs_mount, |
1da177e4 LT |
1487 | .kill_sb = kill_block_super, |
1488 | .fs_flags = FS_REQUIRES_DEV, | |
1489 | }; | |
7f78e035 | 1490 | MODULE_ALIAS_FS("ufs"); |
1da177e4 LT |
1491 | |
1492 | static int __init init_ufs_fs(void) | |
1493 | { | |
1494 | int err = init_inodecache(); | |
1495 | if (err) | |
1496 | goto out1; | |
1497 | err = register_filesystem(&ufs_fs_type); | |
1498 | if (err) | |
1499 | goto out; | |
1500 | return 0; | |
1501 | out: | |
1502 | destroy_inodecache(); | |
1503 | out1: | |
1504 | return err; | |
1505 | } | |
1506 | ||
1507 | static void __exit exit_ufs_fs(void) | |
1508 | { | |
1509 | unregister_filesystem(&ufs_fs_type); | |
1510 | destroy_inodecache(); | |
1511 | } | |
1512 | ||
1513 | module_init(init_ufs_fs) | |
1514 | module_exit(exit_ufs_fs) | |
1515 | MODULE_LICENSE("GPL"); |