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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 | ||
f3e2a520 | 68 | #include <linux/exportfs.h> |
1da177e4 LT |
69 | #include <linux/module.h> |
70 | #include <linux/bitops.h> | |
71 | ||
72 | #include <stdarg.h> | |
73 | ||
7c0f6ba6 | 74 | #include <linux/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> | |
66114cad | 83 | #include <linux/backing-dev.h> |
1da177e4 LT |
84 | #include <linux/init.h> |
85 | #include <linux/parser.h> | |
1da177e4 LT |
86 | #include <linux/buffer_head.h> |
87 | #include <linux/vfs.h> | |
9e8c4273 | 88 | #include <linux/log2.h> |
2a9807c0 ED |
89 | #include <linux/mount.h> |
90 | #include <linux/seq_file.h> | |
bb8c2d66 | 91 | #include <linux/iversion.h> |
1da177e4 | 92 | |
e5420598 | 93 | #include "ufs_fs.h" |
bcd6d4ec | 94 | #include "ufs.h" |
1da177e4 LT |
95 | #include "swab.h" |
96 | #include "util.h" | |
97 | ||
f3e2a520 AD |
98 | static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) |
99 | { | |
100 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
101 | struct inode *inode; | |
102 | ||
103 | if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg) | |
104 | return ERR_PTR(-ESTALE); | |
105 | ||
106 | inode = ufs_iget(sb, ino); | |
107 | if (IS_ERR(inode)) | |
108 | return ERR_CAST(inode); | |
109 | if (generation && inode->i_generation != generation) { | |
110 | iput(inode); | |
111 | return ERR_PTR(-ESTALE); | |
112 | } | |
113 | return inode; | |
114 | } | |
115 | ||
116 | static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
117 | int fh_len, int fh_type) | |
118 | { | |
119 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
120 | } | |
121 | ||
122 | static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
123 | int fh_len, int fh_type) | |
124 | { | |
125 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
126 | } | |
127 | ||
128 | static struct dentry *ufs_get_parent(struct dentry *child) | |
129 | { | |
26fe5750 | 130 | struct qstr dot_dot = QSTR_INIT("..", 2); |
f3e2a520 AD |
131 | ino_t ino; |
132 | ||
2b0143b5 | 133 | ino = ufs_inode_by_name(d_inode(child), &dot_dot); |
f3e2a520 AD |
134 | if (!ino) |
135 | return ERR_PTR(-ENOENT); | |
fc64005c | 136 | return d_obtain_alias(ufs_iget(child->d_sb, ino)); |
f3e2a520 AD |
137 | } |
138 | ||
139 | static const struct export_operations ufs_export_ops = { | |
140 | .fh_to_dentry = ufs_fh_to_dentry, | |
141 | .fh_to_parent = ufs_fh_to_parent, | |
142 | .get_parent = ufs_get_parent, | |
143 | }; | |
144 | ||
abf5d15f | 145 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
146 | /* |
147 | * Print contents of ufs_super_block, useful for debugging | |
148 | */ | |
3313e292 | 149 | static void ufs_print_super_stuff(struct super_block *sb, |
647b7e87 ED |
150 | struct ufs_super_block_first *usb1, |
151 | struct ufs_super_block_second *usb2, | |
152 | struct ufs_super_block_third *usb3) | |
1da177e4 | 153 | { |
3313e292 ED |
154 | u32 magic = fs32_to_cpu(sb, usb3->fs_magic); |
155 | ||
a9814c5d FF |
156 | pr_debug("ufs_print_super_stuff\n"); |
157 | pr_debug(" magic: 0x%x\n", magic); | |
3313e292 | 158 | if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { |
a9814c5d FF |
159 | pr_debug(" fs_size: %llu\n", (unsigned long long) |
160 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); | |
161 | pr_debug(" fs_dsize: %llu\n", (unsigned long long) | |
162 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); | |
163 | pr_debug(" bsize: %u\n", | |
164 | fs32_to_cpu(sb, usb1->fs_bsize)); | |
165 | pr_debug(" fsize: %u\n", | |
166 | fs32_to_cpu(sb, usb1->fs_fsize)); | |
167 | pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); | |
168 | pr_debug(" fs_sblockloc: %llu\n", (unsigned long long) | |
169 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); | |
170 | pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long) | |
171 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); | |
172 | pr_debug(" cs_nbfree(No of free blocks): %llu\n", | |
173 | (unsigned long long) | |
174 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); | |
175 | pr_info(" cs_nifree(Num of free inodes): %llu\n", | |
176 | (unsigned long long) | |
177 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); | |
178 | pr_info(" cs_nffree(Num of free frags): %llu\n", | |
179 | (unsigned long long) | |
180 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); | |
181 | pr_info(" fs_maxsymlinklen: %u\n", | |
182 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); | |
647b7e87 | 183 | } else { |
a9814c5d FF |
184 | pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); |
185 | pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
186 | pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
187 | pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
188 | pr_debug(" cgoffset: %u\n", | |
189 | fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
190 | pr_debug(" ~cgmask: 0x%x\n", | |
191 | ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
192 | pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
193 | pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
194 | pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
195 | pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
196 | pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
197 | pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
198 | pr_debug(" fragshift: %u\n", | |
199 | fs32_to_cpu(sb, usb1->fs_fragshift)); | |
200 | pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
201 | pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
202 | pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
203 | pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
204 | pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
205 | pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
206 | pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
207 | pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
208 | pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
209 | pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
210 | pr_debug(" fstodb: %u\n", | |
211 | fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
212 | pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
213 | pr_debug(" ndir %u\n", | |
214 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
215 | pr_debug(" nifree %u\n", | |
216 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
217 | pr_debug(" nbfree %u\n", | |
218 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
219 | pr_debug(" nffree %u\n", | |
220 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
647b7e87 | 221 | } |
a9814c5d | 222 | pr_debug("\n"); |
1da177e4 LT |
223 | } |
224 | ||
225 | /* | |
226 | * Print contents of ufs_cylinder_group, useful for debugging | |
227 | */ | |
647b7e87 ED |
228 | static void ufs_print_cylinder_stuff(struct super_block *sb, |
229 | struct ufs_cylinder_group *cg) | |
1da177e4 | 230 | { |
a9814c5d FF |
231 | pr_debug("\nufs_print_cylinder_stuff\n"); |
232 | pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); | |
233 | pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); | |
234 | pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
235 | pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
236 | pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
237 | pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
238 | pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
239 | pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
240 | pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
241 | pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
242 | pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
243 | pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
244 | pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
245 | pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
246 | pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
1da177e4 LT |
247 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), |
248 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
249 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
250 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
a9814c5d FF |
251 | pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); |
252 | pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
253 | pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
254 | pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
255 | pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
256 | pr_debug(" clustersumoff %u\n", | |
257 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
258 | pr_debug(" clusteroff %u\n", | |
259 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
260 | pr_debug(" nclusterblks %u\n", | |
261 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
262 | pr_debug("\n"); | |
1da177e4 | 263 | } |
647b7e87 | 264 | #else |
3313e292 | 265 | # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
647b7e87 | 266 | # define ufs_print_cylinder_stuff(sb, cg) /**/ |
abf5d15f | 267 | #endif /* CONFIG_UFS_DEBUG */ |
1da177e4 | 268 | |
ee9b6d61 | 269 | static const struct super_operations ufs_super_ops; |
1da177e4 | 270 | |
1da177e4 LT |
271 | void ufs_error (struct super_block * sb, const char * function, |
272 | const char * fmt, ...) | |
273 | { | |
274 | struct ufs_sb_private_info * uspi; | |
275 | struct ufs_super_block_first * usb1; | |
7e1e4167 | 276 | struct va_format vaf; |
1da177e4 LT |
277 | va_list args; |
278 | ||
279 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 280 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 | 281 | |
bc98a42c | 282 | if (!sb_rdonly(sb)) { |
1da177e4 | 283 | usb1->fs_clean = UFS_FSBAD; |
9695ef16 | 284 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
9e9ad5f4 | 285 | ufs_mark_sb_dirty(sb); |
1751e8a6 | 286 | sb->s_flags |= SB_RDONLY; |
1da177e4 | 287 | } |
7e1e4167 FF |
288 | va_start(args, fmt); |
289 | vaf.fmt = fmt; | |
290 | vaf.va = &args; | |
1da177e4 LT |
291 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { |
292 | case UFS_MOUNT_ONERROR_PANIC: | |
7e1e4167 FF |
293 | panic("panic (device %s): %s: %pV\n", |
294 | sb->s_id, function, &vaf); | |
1da177e4 LT |
295 | |
296 | case UFS_MOUNT_ONERROR_LOCK: | |
297 | case UFS_MOUNT_ONERROR_UMOUNT: | |
298 | case UFS_MOUNT_ONERROR_REPAIR: | |
7e1e4167 FF |
299 | pr_crit("error (device %s): %s: %pV\n", |
300 | sb->s_id, function, &vaf); | |
301 | } | |
302 | va_end(args); | |
1da177e4 LT |
303 | } |
304 | ||
305 | void ufs_panic (struct super_block * sb, const char * function, | |
306 | const char * fmt, ...) | |
307 | { | |
308 | struct ufs_sb_private_info * uspi; | |
309 | struct ufs_super_block_first * usb1; | |
7e1e4167 | 310 | struct va_format vaf; |
1da177e4 LT |
311 | va_list args; |
312 | ||
313 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 314 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 | 315 | |
bc98a42c | 316 | if (!sb_rdonly(sb)) { |
1da177e4 | 317 | usb1->fs_clean = UFS_FSBAD; |
9695ef16 | 318 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
9e9ad5f4 | 319 | ufs_mark_sb_dirty(sb); |
1da177e4 | 320 | } |
7e1e4167 FF |
321 | va_start(args, fmt); |
322 | vaf.fmt = fmt; | |
323 | vaf.va = &args; | |
1751e8a6 | 324 | sb->s_flags |= SB_RDONLY; |
7e1e4167 FF |
325 | pr_crit("panic (device %s): %s: %pV\n", |
326 | sb->s_id, function, &vaf); | |
327 | va_end(args); | |
1da177e4 LT |
328 | } |
329 | ||
330 | void ufs_warning (struct super_block * sb, const char * function, | |
331 | const char * fmt, ...) | |
332 | { | |
7e1e4167 | 333 | struct va_format vaf; |
1da177e4 LT |
334 | va_list args; |
335 | ||
7e1e4167 FF |
336 | va_start(args, fmt); |
337 | vaf.fmt = fmt; | |
338 | vaf.va = &args; | |
339 | pr_warn("(device %s): %s: %pV\n", | |
340 | sb->s_id, function, &vaf); | |
341 | va_end(args); | |
1da177e4 LT |
342 | } |
343 | ||
344 | enum { | |
2a9807c0 ED |
345 | Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
346 | Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, | |
347 | Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, | |
348 | Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, | |
349 | Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, | |
350 | Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, | |
351 | Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, | |
352 | Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, | |
353 | Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, | |
354 | Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, | |
355 | Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, | |
356 | Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, | |
357 | Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, | |
358 | Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, | |
359 | Opt_err | |
1da177e4 LT |
360 | }; |
361 | ||
a447c093 | 362 | static const match_table_t tokens = { |
1da177e4 LT |
363 | {Opt_type_old, "ufstype=old"}, |
364 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
365 | {Opt_type_sun, "ufstype=sun"}, | |
252e211e | 366 | {Opt_type_sunos, "ufstype=sunos"}, |
1da177e4 LT |
367 | {Opt_type_44bsd, "ufstype=44bsd"}, |
368 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
369 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
370 | {Opt_type_hp, "ufstype=hp"}, | |
371 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
372 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
373 | {Opt_type_openstep, "ufstype=openstep"}, | |
2a9807c0 | 374 | /*end of possible ufs types */ |
1da177e4 LT |
375 | {Opt_onerror_panic, "onerror=panic"}, |
376 | {Opt_onerror_lock, "onerror=lock"}, | |
377 | {Opt_onerror_umount, "onerror=umount"}, | |
378 | {Opt_onerror_repair, "onerror=repair"}, | |
379 | {Opt_err, NULL} | |
380 | }; | |
381 | ||
382 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
383 | { | |
384 | char * p; | |
385 | ||
abf5d15f | 386 | UFSD("ENTER\n"); |
1da177e4 LT |
387 | |
388 | if (!options) | |
389 | return 1; | |
390 | ||
391 | while ((p = strsep(&options, ",")) != NULL) { | |
392 | substring_t args[MAX_OPT_ARGS]; | |
393 | int token; | |
394 | if (!*p) | |
395 | continue; | |
396 | ||
397 | token = match_token(p, tokens, args); | |
398 | switch (token) { | |
399 | case Opt_type_old: | |
400 | ufs_clear_opt (*mount_options, UFSTYPE); | |
401 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
402 | break; | |
403 | case Opt_type_sunx86: | |
404 | ufs_clear_opt (*mount_options, UFSTYPE); | |
405 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
406 | break; | |
407 | case Opt_type_sun: | |
408 | ufs_clear_opt (*mount_options, UFSTYPE); | |
409 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
410 | break; | |
252e211e MF |
411 | case Opt_type_sunos: |
412 | ufs_clear_opt(*mount_options, UFSTYPE); | |
413 | ufs_set_opt(*mount_options, UFSTYPE_SUNOS); | |
414 | break; | |
1da177e4 LT |
415 | case Opt_type_44bsd: |
416 | ufs_clear_opt (*mount_options, UFSTYPE); | |
417 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
418 | break; | |
419 | case Opt_type_ufs2: | |
420 | ufs_clear_opt(*mount_options, UFSTYPE); | |
421 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
422 | break; | |
423 | case Opt_type_hp: | |
424 | ufs_clear_opt (*mount_options, UFSTYPE); | |
425 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
426 | break; | |
427 | case Opt_type_nextstepcd: | |
428 | ufs_clear_opt (*mount_options, UFSTYPE); | |
429 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
430 | break; | |
431 | case Opt_type_nextstep: | |
432 | ufs_clear_opt (*mount_options, UFSTYPE); | |
433 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
434 | break; | |
435 | case Opt_type_openstep: | |
436 | ufs_clear_opt (*mount_options, UFSTYPE); | |
437 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
438 | break; | |
439 | case Opt_onerror_panic: | |
440 | ufs_clear_opt (*mount_options, ONERROR); | |
441 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
442 | break; | |
443 | case Opt_onerror_lock: | |
444 | ufs_clear_opt (*mount_options, ONERROR); | |
445 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
446 | break; | |
447 | case Opt_onerror_umount: | |
448 | ufs_clear_opt (*mount_options, ONERROR); | |
449 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
450 | break; | |
451 | case Opt_onerror_repair: | |
de771bda | 452 | pr_err("Unable to do repair on error, will lock lock instead\n"); |
1da177e4 LT |
453 | ufs_clear_opt (*mount_options, ONERROR); |
454 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
455 | break; | |
456 | default: | |
de771bda | 457 | pr_err("Invalid option: \"%s\" or missing value\n", p); |
1da177e4 LT |
458 | return 0; |
459 | } | |
460 | } | |
461 | return 1; | |
462 | } | |
463 | ||
464 | /* | |
25985edc LDM |
465 | * Different types of UFS hold fs_cstotal in different |
466 | * places, and use different data structure for it. | |
467 | * To make things simpler we just copy fs_cstotal to ufs_sb_private_info | |
1da177e4 | 468 | */ |
ee3ffd6c | 469 | static void ufs_setup_cstotal(struct super_block *sb) |
e295cfcb | 470 | { |
647b7e87 ED |
471 | struct ufs_sb_info *sbi = UFS_SB(sb); |
472 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
ee3ffd6c ED |
473 | struct ufs_super_block_first *usb1; |
474 | struct ufs_super_block_second *usb2; | |
647b7e87 | 475 | struct ufs_super_block_third *usb3; |
ee3ffd6c ED |
476 | unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
477 | ||
478 | UFSD("ENTER, mtype=%u\n", mtype); | |
479 | usb1 = ubh_get_usb_first(uspi); | |
480 | usb2 = ubh_get_usb_second(uspi); | |
481 | usb3 = ubh_get_usb_third(uspi); | |
482 | ||
483 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
96ecff14 | 484 | (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) || |
ee3ffd6c ED |
485 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { |
486 | /*we have statistic in different place, then usual*/ | |
487 | uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); | |
488 | uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); | |
489 | uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); | |
490 | uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); | |
491 | } else { | |
492 | uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); | |
493 | uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); | |
494 | uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
495 | uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
496 | } | |
497 | UFSD("EXIT\n"); | |
498 | } | |
499 | ||
500 | /* | |
501 | * Read on-disk structures associated with cylinder groups | |
502 | */ | |
503 | static int ufs_read_cylinder_structures(struct super_block *sb) | |
504 | { | |
505 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
506 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
507 | struct ufs_buffer_head * ubh; |
508 | unsigned char * base, * space; | |
509 | unsigned size, blks, i; | |
ee3ffd6c | 510 | |
abf5d15f | 511 | UFSD("ENTER\n"); |
1da177e4 | 512 | |
1da177e4 LT |
513 | /* |
514 | * Read cs structures from (usually) first data block | |
515 | * on the device. | |
516 | */ | |
517 | size = uspi->s_cssize; | |
518 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
788257d6 | 519 | base = space = kmalloc(size, GFP_NOFS); |
1da177e4 LT |
520 | if (!base) |
521 | goto failed; | |
e295cfcb | 522 | sbi->s_csp = (struct ufs_csum *)space; |
1da177e4 LT |
523 | for (i = 0; i < blks; i += uspi->s_fpb) { |
524 | size = uspi->s_bsize; | |
525 | if (i + uspi->s_fpb > blks) | |
526 | size = (blks - i) * uspi->s_fsize; | |
527 | ||
3313e292 | 528 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
7b4ee73e E |
529 | |
530 | if (!ubh) | |
531 | goto failed; | |
532 | ||
533 | ubh_ubhcpymem (space, ubh, size); | |
7b4ee73e | 534 | |
1da177e4 LT |
535 | space += size; |
536 | ubh_brelse (ubh); | |
537 | ubh = NULL; | |
538 | } | |
539 | ||
540 | /* | |
541 | * Read cylinder group (we read only first fragment from block | |
542 | * at this time) and prepare internal data structures for cg caching. | |
543 | */ | |
6da2ec56 KC |
544 | sbi->s_ucg = kmalloc_array(uspi->s_ncg, sizeof(struct buffer_head *), |
545 | GFP_NOFS); | |
546 | if (!sbi->s_ucg) | |
1da177e4 LT |
547 | goto failed; |
548 | for (i = 0; i < uspi->s_ncg; i++) | |
549 | sbi->s_ucg[i] = NULL; | |
550 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
551 | sbi->s_ucpi[i] = NULL; | |
552 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
553 | } | |
554 | for (i = 0; i < uspi->s_ncg; i++) { | |
abf5d15f | 555 | UFSD("read cg %u\n", i); |
1da177e4 LT |
556 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
557 | goto failed; | |
558 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
559 | goto failed; | |
647b7e87 | 560 | |
1da177e4 | 561 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
1da177e4 LT |
562 | } |
563 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
788257d6 | 564 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS))) |
1da177e4 LT |
565 | goto failed; |
566 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
567 | } | |
568 | sbi->s_cg_loaded = 0; | |
abf5d15f | 569 | UFSD("EXIT\n"); |
1da177e4 LT |
570 | return 1; |
571 | ||
572 | failed: | |
f99d49ad | 573 | kfree (base); |
1da177e4 LT |
574 | if (sbi->s_ucg) { |
575 | for (i = 0; i < uspi->s_ncg; i++) | |
f99d49ad JJ |
576 | if (sbi->s_ucg[i]) |
577 | brelse (sbi->s_ucg[i]); | |
1da177e4 LT |
578 | kfree (sbi->s_ucg); |
579 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
f99d49ad | 580 | kfree (sbi->s_ucpi[i]); |
1da177e4 | 581 | } |
abf5d15f | 582 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
583 | return 0; |
584 | } | |
585 | ||
586 | /* | |
ee3ffd6c | 587 | * Sync our internal copy of fs_cstotal with disk |
1da177e4 | 588 | */ |
ee3ffd6c | 589 | static void ufs_put_cstotal(struct super_block *sb) |
e295cfcb | 590 | { |
ee3ffd6c ED |
591 | unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
592 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
593 | struct ufs_super_block_first *usb1; | |
594 | struct ufs_super_block_second *usb2; | |
595 | struct ufs_super_block_third *usb3; | |
596 | ||
597 | UFSD("ENTER\n"); | |
598 | usb1 = ubh_get_usb_first(uspi); | |
599 | usb2 = ubh_get_usb_second(uspi); | |
600 | usb3 = ubh_get_usb_third(uspi); | |
601 | ||
96ecff14 | 602 | if (mtype == UFS_MOUNT_UFSTYPE_UFS2) { |
ee3ffd6c ED |
603 | /*we have statistic in different place, then usual*/ |
604 | usb2->fs_un.fs_u2.cs_ndir = | |
605 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
606 | usb2->fs_un.fs_u2.cs_nbfree = | |
607 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
608 | usb3->fs_un1.fs_u2.cs_nifree = | |
609 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
610 | usb3->fs_un1.fs_u2.cs_nffree = | |
611 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
96ecff14 | 612 | goto out; |
ee3ffd6c | 613 | } |
96ecff14 AV |
614 | |
615 | if (mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
616 | (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) { | |
617 | /* store stats in both old and new places */ | |
618 | usb2->fs_un.fs_u2.cs_ndir = | |
619 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
620 | usb2->fs_un.fs_u2.cs_nbfree = | |
621 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
622 | usb3->fs_un1.fs_u2.cs_nifree = | |
623 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
624 | usb3->fs_un1.fs_u2.cs_nffree = | |
625 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
ee3ffd6c | 626 | } |
96ecff14 AV |
627 | usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir); |
628 | usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); | |
629 | usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree); | |
630 | usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree); | |
631 | out: | |
ee3ffd6c | 632 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
3313e292 | 633 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
ee3ffd6c ED |
634 | UFSD("EXIT\n"); |
635 | } | |
636 | ||
637 | /** | |
638 | * ufs_put_super_internal() - put on-disk intrenal structures | |
639 | * @sb: pointer to super_block structure | |
640 | * Put on-disk structures associated with cylinder groups | |
641 | * and write them back to disk, also update cs_total on disk | |
642 | */ | |
643 | static void ufs_put_super_internal(struct super_block *sb) | |
644 | { | |
645 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
646 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
647 | struct ufs_buffer_head * ubh; |
648 | unsigned char * base, * space; | |
649 | unsigned blks, size, i; | |
ee3ffd6c | 650 | |
1da177e4 | 651 | |
abf5d15f | 652 | UFSD("ENTER\n"); |
6cfd0148 | 653 | |
ee3ffd6c | 654 | ufs_put_cstotal(sb); |
1da177e4 LT |
655 | size = uspi->s_cssize; |
656 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
e295cfcb | 657 | base = space = (char*) sbi->s_csp; |
1da177e4 LT |
658 | for (i = 0; i < blks; i += uspi->s_fpb) { |
659 | size = uspi->s_bsize; | |
660 | if (i + uspi->s_fpb > blks) | |
661 | size = (blks - i) * uspi->s_fsize; | |
3313e292 | 662 | |
1da177e4 | 663 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
3313e292 | 664 | |
1da177e4 LT |
665 | ubh_memcpyubh (ubh, space, size); |
666 | space += size; | |
667 | ubh_mark_buffer_uptodate (ubh, 1); | |
668 | ubh_mark_buffer_dirty (ubh); | |
669 | ubh_brelse (ubh); | |
670 | } | |
671 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
672 | ufs_put_cylinder (sb, i); | |
673 | kfree (sbi->s_ucpi[i]); | |
674 | } | |
675 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
676 | kfree (sbi->s_ucpi[i]); | |
677 | for (i = 0; i < uspi->s_ncg; i++) | |
678 | brelse (sbi->s_ucg[i]); | |
679 | kfree (sbi->s_ucg); | |
680 | kfree (base); | |
6cfd0148 | 681 | |
abf5d15f | 682 | UFSD("EXIT\n"); |
1da177e4 LT |
683 | } |
684 | ||
7bd54ef7 AB |
685 | static int ufs_sync_fs(struct super_block *sb, int wait) |
686 | { | |
687 | struct ufs_sb_private_info * uspi; | |
688 | struct ufs_super_block_first * usb1; | |
689 | struct ufs_super_block_third * usb3; | |
690 | unsigned flags; | |
691 | ||
cdd9eefd | 692 | mutex_lock(&UFS_SB(sb)->s_lock); |
7bd54ef7 AB |
693 | |
694 | UFSD("ENTER\n"); | |
695 | ||
696 | flags = UFS_SB(sb)->s_flags; | |
697 | uspi = UFS_SB(sb)->s_uspi; | |
698 | usb1 = ubh_get_usb_first(uspi); | |
699 | usb3 = ubh_get_usb_third(uspi); | |
700 | ||
701 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
702 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
703 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
704 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
705 | ufs_set_fs_state(sb, usb1, usb3, | |
706 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
707 | ufs_put_cstotal(sb); | |
7bd54ef7 AB |
708 | |
709 | UFSD("EXIT\n"); | |
cdd9eefd | 710 | mutex_unlock(&UFS_SB(sb)->s_lock); |
7bd54ef7 AB |
711 | |
712 | return 0; | |
713 | } | |
714 | ||
9e9ad5f4 | 715 | static void delayed_sync_fs(struct work_struct *work) |
7bd54ef7 | 716 | { |
9e9ad5f4 AB |
717 | struct ufs_sb_info *sbi; |
718 | ||
719 | sbi = container_of(work, struct ufs_sb_info, sync_work.work); | |
720 | ||
721 | spin_lock(&sbi->work_lock); | |
722 | sbi->work_queued = 0; | |
723 | spin_unlock(&sbi->work_lock); | |
724 | ||
725 | ufs_sync_fs(sbi->sb, 1); | |
726 | } | |
727 | ||
728 | void ufs_mark_sb_dirty(struct super_block *sb) | |
729 | { | |
730 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
731 | unsigned long delay; | |
732 | ||
733 | spin_lock(&sbi->work_lock); | |
734 | if (!sbi->work_queued) { | |
735 | delay = msecs_to_jiffies(dirty_writeback_interval * 10); | |
736 | queue_delayed_work(system_long_wq, &sbi->sync_work, delay); | |
737 | sbi->work_queued = 1; | |
738 | } | |
739 | spin_unlock(&sbi->work_lock); | |
7bd54ef7 AB |
740 | } |
741 | ||
742 | static void ufs_put_super(struct super_block *sb) | |
743 | { | |
744 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
745 | ||
746 | UFSD("ENTER\n"); | |
747 | ||
bc98a42c | 748 | if (!sb_rdonly(sb)) |
7bd54ef7 | 749 | ufs_put_super_internal(sb); |
9e9ad5f4 | 750 | cancel_delayed_work_sync(&sbi->sync_work); |
7bd54ef7 AB |
751 | |
752 | ubh_brelse_uspi (sbi->s_uspi); | |
753 | kfree (sbi->s_uspi); | |
754 | kfree (sbi); | |
755 | sb->s_fs_info = NULL; | |
756 | UFSD("EXIT\n"); | |
757 | return; | |
758 | } | |
759 | ||
6b0d144f AV |
760 | static u64 ufs_max_bytes(struct super_block *sb) |
761 | { | |
762 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
763 | int bits = uspi->s_apbshift; | |
764 | u64 res; | |
765 | ||
766 | if (bits > 21) | |
767 | res = ~0ULL; | |
768 | else | |
769 | res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) + | |
770 | (1LL << (3*bits)); | |
771 | ||
772 | if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift)) | |
773 | return MAX_LFS_FILESIZE; | |
774 | return res << uspi->s_bshift; | |
775 | } | |
776 | ||
1da177e4 LT |
777 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) |
778 | { | |
779 | struct ufs_sb_info * sbi; | |
780 | struct ufs_sb_private_info * uspi; | |
781 | struct ufs_super_block_first * usb1; | |
782 | struct ufs_super_block_second * usb2; | |
783 | struct ufs_super_block_third * usb3; | |
1da177e4 LT |
784 | struct ufs_buffer_head * ubh; |
785 | struct inode *inode; | |
786 | unsigned block_size, super_block_size; | |
787 | unsigned flags; | |
7b4ee73e | 788 | unsigned super_block_offset; |
9e6766cc | 789 | unsigned maxsymlen; |
b55c460d | 790 | int ret = -EINVAL; |
1da177e4 LT |
791 | |
792 | uspi = NULL; | |
793 | ubh = NULL; | |
794 | flags = 0; | |
795 | ||
abf5d15f | 796 | UFSD("ENTER\n"); |
0244756e FF |
797 | |
798 | #ifndef CONFIG_UFS_FS_WRITE | |
bc98a42c | 799 | if (!sb_rdonly(sb)) { |
a9814c5d | 800 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); |
0244756e FF |
801 | return -EROFS; |
802 | } | |
803 | #endif | |
1da177e4 | 804 | |
f8314dc6 | 805 | sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); |
1da177e4 LT |
806 | if (!sbi) |
807 | goto failed_nomem; | |
808 | sb->s_fs_info = sbi; | |
9e9ad5f4 | 809 | sbi->sb = sb; |
1da177e4 | 810 | |
bc98a42c | 811 | UFSD("flag %u\n", (int)(sb_rdonly(sb))); |
1da177e4 | 812 | |
e4f95517 | 813 | mutex_init(&sbi->s_lock); |
9e9ad5f4 AB |
814 | spin_lock_init(&sbi->work_lock); |
815 | INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); | |
1da177e4 LT |
816 | /* |
817 | * Set default mount options | |
818 | * Parse mount options | |
819 | */ | |
820 | sbi->s_mount_opt = 0; | |
821 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
822 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
a9814c5d | 823 | pr_err("wrong mount options\n"); |
1da177e4 LT |
824 | goto failed; |
825 | } | |
826 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
827 | if (!silent) | |
a9814c5d | 828 | pr_err("You didn't specify the type of your ufs filesystem\n\n" |
1da177e4 | 829 | "mount -t ufs -o ufstype=" |
c690a722 | 830 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
1da177e4 LT |
831 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
832 | "default is ufstype=old\n"); | |
833 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
834 | } | |
835 | ||
252e211e MF |
836 | uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL); |
837 | sbi->s_uspi = uspi; | |
1da177e4 LT |
838 | if (!uspi) |
839 | goto failed; | |
f336953b | 840 | uspi->s_dirblksize = UFS_SECTOR_SIZE; |
7b4ee73e E |
841 | super_block_offset=UFS_SBLOCK; |
842 | ||
239e250e RN |
843 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
844 | ||
1da177e4 LT |
845 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
846 | case UFS_MOUNT_UFSTYPE_44BSD: | |
abf5d15f | 847 | UFSD("ufstype=44bsd\n"); |
1da177e4 LT |
848 | uspi->s_fsize = block_size = 512; |
849 | uspi->s_fmask = ~(512 - 1); | |
850 | uspi->s_fshift = 9; | |
851 | uspi->s_sbsize = super_block_size = 1536; | |
852 | uspi->s_sbbase = 0; | |
853 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
854 | break; | |
855 | case UFS_MOUNT_UFSTYPE_UFS2: | |
abf5d15f | 856 | UFSD("ufstype=ufs2\n"); |
7b4ee73e | 857 | super_block_offset=SBLOCK_UFS2; |
1da177e4 LT |
858 | uspi->s_fsize = block_size = 512; |
859 | uspi->s_fmask = ~(512 - 1); | |
860 | uspi->s_fshift = 9; | |
861 | uspi->s_sbsize = super_block_size = 1536; | |
862 | uspi->s_sbbase = 0; | |
863 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
1da177e4 LT |
864 | break; |
865 | ||
866 | case UFS_MOUNT_UFSTYPE_SUN: | |
abf5d15f | 867 | UFSD("ufstype=sun\n"); |
1da177e4 LT |
868 | uspi->s_fsize = block_size = 1024; |
869 | uspi->s_fmask = ~(1024 - 1); | |
870 | uspi->s_fshift = 10; | |
871 | uspi->s_sbsize = super_block_size = 2048; | |
872 | uspi->s_sbbase = 0; | |
252e211e | 873 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
874 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; |
875 | break; | |
876 | ||
252e211e | 877 | case UFS_MOUNT_UFSTYPE_SUNOS: |
d4beaabd | 878 | UFSD("ufstype=sunos\n"); |
252e211e MF |
879 | uspi->s_fsize = block_size = 1024; |
880 | uspi->s_fmask = ~(1024 - 1); | |
881 | uspi->s_fshift = 10; | |
882 | uspi->s_sbsize = 2048; | |
883 | super_block_size = 2048; | |
884 | uspi->s_sbbase = 0; | |
885 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ | |
886 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; | |
887 | break; | |
888 | ||
1da177e4 | 889 | case UFS_MOUNT_UFSTYPE_SUNx86: |
abf5d15f | 890 | UFSD("ufstype=sunx86\n"); |
1da177e4 LT |
891 | uspi->s_fsize = block_size = 1024; |
892 | uspi->s_fmask = ~(1024 - 1); | |
893 | uspi->s_fshift = 10; | |
894 | uspi->s_sbsize = super_block_size = 2048; | |
895 | uspi->s_sbbase = 0; | |
252e211e | 896 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
897 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; |
898 | break; | |
899 | ||
900 | case UFS_MOUNT_UFSTYPE_OLD: | |
abf5d15f | 901 | UFSD("ufstype=old\n"); |
1da177e4 LT |
902 | uspi->s_fsize = block_size = 1024; |
903 | uspi->s_fmask = ~(1024 - 1); | |
904 | uspi->s_fshift = 10; | |
905 | uspi->s_sbsize = super_block_size = 2048; | |
906 | uspi->s_sbbase = 0; | |
907 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
bc98a42c | 908 | if (!sb_rdonly(sb)) { |
1da177e4 | 909 | if (!silent) |
a9814c5d | 910 | pr_info("ufstype=old is supported read-only\n"); |
1751e8a6 | 911 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
912 | } |
913 | break; | |
914 | ||
915 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
abf5d15f | 916 | UFSD("ufstype=nextstep\n"); |
1da177e4 LT |
917 | uspi->s_fsize = block_size = 1024; |
918 | uspi->s_fmask = ~(1024 - 1); | |
919 | uspi->s_fshift = 10; | |
920 | uspi->s_sbsize = super_block_size = 2048; | |
921 | uspi->s_sbbase = 0; | |
0c664f97 | 922 | uspi->s_dirblksize = 1024; |
1da177e4 | 923 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
bc98a42c | 924 | if (!sb_rdonly(sb)) { |
1da177e4 | 925 | if (!silent) |
a9814c5d | 926 | pr_info("ufstype=nextstep is supported read-only\n"); |
1751e8a6 | 927 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
928 | } |
929 | break; | |
930 | ||
931 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
abf5d15f | 932 | UFSD("ufstype=nextstep-cd\n"); |
1da177e4 LT |
933 | uspi->s_fsize = block_size = 2048; |
934 | uspi->s_fmask = ~(2048 - 1); | |
935 | uspi->s_fshift = 11; | |
936 | uspi->s_sbsize = super_block_size = 2048; | |
937 | uspi->s_sbbase = 0; | |
0c664f97 | 938 | uspi->s_dirblksize = 1024; |
1da177e4 | 939 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
bc98a42c | 940 | if (!sb_rdonly(sb)) { |
1da177e4 | 941 | if (!silent) |
a9814c5d | 942 | pr_info("ufstype=nextstep-cd is supported read-only\n"); |
1751e8a6 | 943 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
944 | } |
945 | break; | |
946 | ||
947 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
abf5d15f | 948 | UFSD("ufstype=openstep\n"); |
1da177e4 LT |
949 | uspi->s_fsize = block_size = 1024; |
950 | uspi->s_fmask = ~(1024 - 1); | |
951 | uspi->s_fshift = 10; | |
952 | uspi->s_sbsize = super_block_size = 2048; | |
953 | uspi->s_sbbase = 0; | |
f336953b | 954 | uspi->s_dirblksize = 1024; |
1da177e4 | 955 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
bc98a42c | 956 | if (!sb_rdonly(sb)) { |
1da177e4 | 957 | if (!silent) |
a9814c5d | 958 | pr_info("ufstype=openstep is supported read-only\n"); |
1751e8a6 | 959 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
960 | } |
961 | break; | |
962 | ||
963 | case UFS_MOUNT_UFSTYPE_HP: | |
abf5d15f | 964 | UFSD("ufstype=hp\n"); |
1da177e4 LT |
965 | uspi->s_fsize = block_size = 1024; |
966 | uspi->s_fmask = ~(1024 - 1); | |
967 | uspi->s_fshift = 10; | |
968 | uspi->s_sbsize = super_block_size = 2048; | |
969 | uspi->s_sbbase = 0; | |
970 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
bc98a42c | 971 | if (!sb_rdonly(sb)) { |
1da177e4 | 972 | if (!silent) |
a9814c5d | 973 | pr_info("ufstype=hp is supported read-only\n"); |
1751e8a6 | 974 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
975 | } |
976 | break; | |
977 | default: | |
978 | if (!silent) | |
a9814c5d | 979 | pr_err("unknown ufstype\n"); |
1da177e4 LT |
980 | goto failed; |
981 | } | |
982 | ||
983 | again: | |
984 | if (!sb_set_blocksize(sb, block_size)) { | |
de771bda | 985 | pr_err("failed to set blocksize\n"); |
1da177e4 LT |
986 | goto failed; |
987 | } | |
988 | ||
989 | /* | |
990 | * read ufs super block from device | |
991 | */ | |
7b4ee73e E |
992 | |
993 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); | |
994 | ||
1da177e4 LT |
995 | if (!ubh) |
996 | goto failed; | |
997 | ||
7b4ee73e E |
998 | usb1 = ubh_get_usb_first(uspi); |
999 | usb2 = ubh_get_usb_second(uspi); | |
1000 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 1001 | |
252e211e MF |
1002 | /* Sort out mod used on SunOS 4.1.3 for fs_state */ |
1003 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
1004 | if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && | |
1005 | (uspi->s_postblformat != UFS_42POSTBLFMT)) { | |
1006 | flags &= ~UFS_ST_MASK; | |
1007 | flags |= UFS_ST_SUN; | |
1008 | } | |
1009 | ||
96ecff14 AV |
1010 | if ((flags & UFS_ST_MASK) == UFS_ST_44BSD && |
1011 | uspi->s_postblformat == UFS_42POSTBLFMT) { | |
1012 | if (!silent) | |
1013 | pr_err("this is not a 44bsd filesystem"); | |
1014 | goto failed; | |
1015 | } | |
1016 | ||
1da177e4 LT |
1017 | /* |
1018 | * Check ufs magic number | |
1019 | */ | |
1020 | sbi->s_bytesex = BYTESEX_LE; | |
1021 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
1022 | case UFS_MAGIC: | |
d27d7a9a | 1023 | case UFS_MAGIC_BW: |
1da177e4 LT |
1024 | case UFS2_MAGIC: |
1025 | case UFS_MAGIC_LFN: | |
1026 | case UFS_MAGIC_FEA: | |
1027 | case UFS_MAGIC_4GB: | |
1028 | goto magic_found; | |
1029 | } | |
1030 | sbi->s_bytesex = BYTESEX_BE; | |
1031 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
1032 | case UFS_MAGIC: | |
d27d7a9a | 1033 | case UFS_MAGIC_BW: |
1da177e4 LT |
1034 | case UFS2_MAGIC: |
1035 | case UFS_MAGIC_LFN: | |
1036 | case UFS_MAGIC_FEA: | |
1037 | case UFS_MAGIC_4GB: | |
1038 | goto magic_found; | |
1039 | } | |
1040 | ||
1041 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
1042 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
1043 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
1044 | && uspi->s_sbbase < 256) { | |
1045 | ubh_brelse_uspi(uspi); | |
1046 | ubh = NULL; | |
1047 | uspi->s_sbbase += 8; | |
1048 | goto again; | |
1049 | } | |
1050 | if (!silent) | |
07bc94fd | 1051 | pr_err("%s(): bad magic number\n", __func__); |
1da177e4 LT |
1052 | goto failed; |
1053 | ||
1054 | magic_found: | |
1055 | /* | |
1056 | * Check block and fragment sizes | |
1057 | */ | |
1058 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
1059 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
1060 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
1061 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1062 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
1063 | ||
9e8c4273 | 1064 | if (!is_power_of_2(uspi->s_fsize)) { |
07bc94fd FF |
1065 | pr_err("%s(): fragment size %u is not a power of 2\n", |
1066 | __func__, uspi->s_fsize); | |
a9814c5d | 1067 | goto failed; |
1da177e4 LT |
1068 | } |
1069 | if (uspi->s_fsize < 512) { | |
07bc94fd FF |
1070 | pr_err("%s(): fragment size %u is too small\n", |
1071 | __func__, uspi->s_fsize); | |
1da177e4 LT |
1072 | goto failed; |
1073 | } | |
1074 | if (uspi->s_fsize > 4096) { | |
07bc94fd FF |
1075 | pr_err("%s(): fragment size %u is too large\n", |
1076 | __func__, uspi->s_fsize); | |
1da177e4 LT |
1077 | goto failed; |
1078 | } | |
9e8c4273 | 1079 | if (!is_power_of_2(uspi->s_bsize)) { |
07bc94fd FF |
1080 | pr_err("%s(): block size %u is not a power of 2\n", |
1081 | __func__, uspi->s_bsize); | |
1da177e4 LT |
1082 | goto failed; |
1083 | } | |
1084 | if (uspi->s_bsize < 4096) { | |
07bc94fd FF |
1085 | pr_err("%s(): block size %u is too small\n", |
1086 | __func__, uspi->s_bsize); | |
1da177e4 LT |
1087 | goto failed; |
1088 | } | |
1089 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
07bc94fd FF |
1090 | pr_err("%s(): too many fragments per block (%u)\n", |
1091 | __func__, uspi->s_bsize / uspi->s_fsize); | |
1da177e4 LT |
1092 | goto failed; |
1093 | } | |
1094 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
1095 | ubh_brelse_uspi(uspi); | |
1096 | ubh = NULL; | |
1097 | block_size = uspi->s_fsize; | |
1098 | super_block_size = uspi->s_sbsize; | |
abf5d15f | 1099 | UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
1da177e4 LT |
1100 | goto again; |
1101 | } | |
1102 | ||
f664f1f9 | 1103 | sbi->s_flags = flags;/*after that line some functions use s_flags*/ |
3313e292 | 1104 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
1da177e4 LT |
1105 | |
1106 | /* | |
1107 | * Check, if file system was correctly unmounted. | |
1108 | * If not, make it read only. | |
1109 | */ | |
f664f1f9 AM |
1110 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || |
1111 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
1112 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
1113 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
1114 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
1115 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
1da177e4 LT |
1116 | switch(usb1->fs_clean) { |
1117 | case UFS_FSCLEAN: | |
abf5d15f | 1118 | UFSD("fs is clean\n"); |
1da177e4 LT |
1119 | break; |
1120 | case UFS_FSSTABLE: | |
abf5d15f | 1121 | UFSD("fs is stable\n"); |
b3a0fd4d AV |
1122 | break; |
1123 | case UFS_FSLOG: | |
1124 | UFSD("fs is logging fs\n"); | |
1da177e4 LT |
1125 | break; |
1126 | case UFS_FSOSF1: | |
abf5d15f | 1127 | UFSD("fs is DEC OSF/1\n"); |
1da177e4 LT |
1128 | break; |
1129 | case UFS_FSACTIVE: | |
07bc94fd | 1130 | pr_err("%s(): fs is active\n", __func__); |
1751e8a6 | 1131 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1132 | break; |
1133 | case UFS_FSBAD: | |
07bc94fd | 1134 | pr_err("%s(): fs is bad\n", __func__); |
1751e8a6 | 1135 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1136 | break; |
1137 | default: | |
07bc94fd FF |
1138 | pr_err("%s(): can't grok fs_clean 0x%x\n", |
1139 | __func__, usb1->fs_clean); | |
1751e8a6 | 1140 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1141 | break; |
1142 | } | |
ee3ffd6c | 1143 | } else { |
07bc94fd | 1144 | pr_err("%s(): fs needs fsck\n", __func__); |
1751e8a6 | 1145 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1146 | } |
1147 | ||
1148 | /* | |
1149 | * Read ufs_super_block into internal data structures | |
1150 | */ | |
1151 | sb->s_op = &ufs_super_ops; | |
f3e2a520 | 1152 | sb->s_export_op = &ufs_export_ops; |
123e9caf | 1153 | |
1da177e4 LT |
1154 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); |
1155 | ||
1156 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
1157 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
1158 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
1159 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
1160 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
1161 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
1162 | ||
1163 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
c596961d AV |
1164 | uspi->s_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); |
1165 | uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); | |
647b7e87 | 1166 | } else { |
1da177e4 LT |
1167 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); |
1168 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
1169 | } | |
1170 | ||
1171 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
1172 | /* s_bsize already set */ | |
1173 | /* s_fsize already set */ | |
1174 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
1175 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
1176 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
1177 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1178 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
1179 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
abf5d15f ED |
1180 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, |
1181 | uspi->s_fshift); | |
1da177e4 LT |
1182 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); |
1183 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
1184 | /* s_sbsize already set */ | |
1185 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
1186 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
1187 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
1188 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
1189 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
1190 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
1191 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
1192 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
3313e292 ED |
1193 | |
1194 | if (uspi->fs_magic == UFS2_MAGIC) | |
1195 | uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); | |
1196 | else | |
1197 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
1198 | ||
1da177e4 LT |
1199 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); |
1200 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
1201 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
1202 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
1203 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
1204 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
1205 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
647b7e87 ED |
1206 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); |
1207 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); | |
1da177e4 LT |
1208 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); |
1209 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
1da177e4 LT |
1210 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); |
1211 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
1212 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
1213 | ||
c596961d AV |
1214 | uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize, |
1215 | uspi->s_minfree, 100); | |
77e9ce32 AV |
1216 | if (uspi->s_minfree <= 5) { |
1217 | uspi->s_time_to_space = ~0ULL; | |
1218 | uspi->s_space_to_time = 0; | |
1219 | usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE); | |
1220 | } else { | |
1221 | uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1; | |
1222 | uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize, | |
1223 | uspi->s_minfree - 2, 100) - 1; | |
1224 | } | |
c596961d | 1225 | |
1da177e4 LT |
1226 | /* |
1227 | * Compute another frequently used values | |
1228 | */ | |
1229 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
abf5d15f | 1230 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1231 | uspi->s_apbshift = uspi->s_bshift - 3; |
abf5d15f | 1232 | else |
1da177e4 | 1233 | uspi->s_apbshift = uspi->s_bshift - 2; |
abf5d15f | 1234 | |
1da177e4 LT |
1235 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
1236 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
1237 | uspi->s_apb = 1 << uspi->s_apbshift; | |
1238 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
1239 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
1240 | uspi->s_apbmask = uspi->s_apb - 1; | |
1241 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
1242 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
1243 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
1244 | uspi->s_bpf = uspi->s_fsize << 3; | |
1245 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
1246 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
90b315af ED |
1247 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || |
1248 | (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) | |
1da177e4 | 1249 | uspi->s_maxsymlinklen = |
647b7e87 | 1250 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); |
1da177e4 | 1251 | |
9e6766cc DG |
1252 | if (uspi->fs_magic == UFS2_MAGIC) |
1253 | maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); | |
1254 | else | |
1255 | maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); | |
1256 | if (uspi->s_maxsymlinklen > maxsymlen) { | |
1257 | ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " | |
1258 | "fast symlink size (%u)\n", uspi->s_maxsymlinklen); | |
1259 | uspi->s_maxsymlinklen = maxsymlen; | |
1260 | } | |
6b0d144f | 1261 | sb->s_maxbytes = ufs_max_bytes(sb); |
8de52778 | 1262 | sb->s_max_links = UFS_LINK_MAX; |
9e6766cc | 1263 | |
b55c460d DH |
1264 | inode = ufs_iget(sb, UFS_ROOTINO); |
1265 | if (IS_ERR(inode)) { | |
1266 | ret = PTR_ERR(inode); | |
1da177e4 | 1267 | goto failed; |
b55c460d | 1268 | } |
48fde701 | 1269 | sb->s_root = d_make_root(inode); |
b55c460d DH |
1270 | if (!sb->s_root) { |
1271 | ret = -ENOMEM; | |
48fde701 | 1272 | goto failed; |
b55c460d | 1273 | } |
1da177e4 | 1274 | |
ee3ffd6c | 1275 | ufs_setup_cstotal(sb); |
1da177e4 LT |
1276 | /* |
1277 | * Read cylinder group structures | |
1278 | */ | |
bc98a42c | 1279 | if (!sb_rdonly(sb)) |
1da177e4 LT |
1280 | if (!ufs_read_cylinder_structures(sb)) |
1281 | goto failed; | |
1282 | ||
abf5d15f | 1283 | UFSD("EXIT\n"); |
1da177e4 LT |
1284 | return 0; |
1285 | ||
1da177e4 | 1286 | failed: |
f99d49ad JJ |
1287 | if (ubh) |
1288 | ubh_brelse_uspi (uspi); | |
1289 | kfree (uspi); | |
1290 | kfree(sbi); | |
1da177e4 | 1291 | sb->s_fs_info = NULL; |
abf5d15f | 1292 | UFSD("EXIT (FAILED)\n"); |
b55c460d | 1293 | return ret; |
1da177e4 LT |
1294 | |
1295 | failed_nomem: | |
abf5d15f | 1296 | UFSD("EXIT (NOMEM)\n"); |
1da177e4 LT |
1297 | return -ENOMEM; |
1298 | } | |
1299 | ||
1da177e4 LT |
1300 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) |
1301 | { | |
1302 | struct ufs_sb_private_info * uspi; | |
1303 | struct ufs_super_block_first * usb1; | |
1304 | struct ufs_super_block_third * usb3; | |
1305 | unsigned new_mount_opt, ufstype; | |
1306 | unsigned flags; | |
337eb00a | 1307 | |
02b9984d | 1308 | sync_filesystem(sb); |
cdd9eefd | 1309 | mutex_lock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1310 | uspi = UFS_SB(sb)->s_uspi; |
1311 | flags = UFS_SB(sb)->s_flags; | |
7b4ee73e E |
1312 | usb1 = ubh_get_usb_first(uspi); |
1313 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1314 | |
1315 | /* | |
1316 | * Allow the "check" option to be passed as a remount option. | |
1317 | * It is not possible to change ufstype option during remount | |
1318 | */ | |
1319 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1320 | new_mount_opt = 0; | |
1321 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
bbd6851a | 1322 | if (!ufs_parse_options (data, &new_mount_opt)) { |
cdd9eefd | 1323 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 | 1324 | return -EINVAL; |
bbd6851a | 1325 | } |
1da177e4 LT |
1326 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { |
1327 | new_mount_opt |= ufstype; | |
ee3ffd6c | 1328 | } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
a9814c5d | 1329 | pr_err("ufstype can't be changed during remount\n"); |
cdd9eefd | 1330 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1331 | return -EINVAL; |
1332 | } | |
1333 | ||
1751e8a6 | 1334 | if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) { |
1da177e4 | 1335 | UFS_SB(sb)->s_mount_opt = new_mount_opt; |
cdd9eefd | 1336 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1337 | return 0; |
1338 | } | |
1339 | ||
1340 | /* | |
1341 | * fs was mouted as rw, remounting ro | |
1342 | */ | |
1751e8a6 | 1343 | if (*mount_flags & SB_RDONLY) { |
ee3ffd6c | 1344 | ufs_put_super_internal(sb); |
1da177e4 LT |
1345 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
1346 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
252e211e | 1347 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1da177e4 LT |
1348 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1349 | ufs_set_fs_state(sb, usb1, usb3, | |
1350 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1351 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1751e8a6 | 1352 | sb->s_flags |= SB_RDONLY; |
ee3ffd6c | 1353 | } else { |
1da177e4 LT |
1354 | /* |
1355 | * fs was mounted as ro, remounting rw | |
1356 | */ | |
1da177e4 | 1357 | #ifndef CONFIG_UFS_FS_WRITE |
a9814c5d | 1358 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); |
cdd9eefd | 1359 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1360 | return -EINVAL; |
1361 | #else | |
1362 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
252e211e | 1363 | ufstype != UFS_MOUNT_UFSTYPE_SUNOS && |
1da177e4 | 1364 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && |
cbcae39f ED |
1365 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && |
1366 | ufstype != UFS_MOUNT_UFSTYPE_UFS2) { | |
a9814c5d | 1367 | pr_err("this ufstype is read-only supported\n"); |
cdd9eefd | 1368 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1369 | return -EINVAL; |
1370 | } | |
ee3ffd6c | 1371 | if (!ufs_read_cylinder_structures(sb)) { |
a9814c5d | 1372 | pr_err("failed during remounting\n"); |
cdd9eefd | 1373 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1374 | return -EPERM; |
1375 | } | |
1751e8a6 | 1376 | sb->s_flags &= ~SB_RDONLY; |
1da177e4 LT |
1377 | #endif |
1378 | } | |
1379 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
cdd9eefd | 1380 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1381 | return 0; |
1382 | } | |
1383 | ||
34c80b1d | 1384 | static int ufs_show_options(struct seq_file *seq, struct dentry *root) |
2a9807c0 | 1385 | { |
34c80b1d | 1386 | struct ufs_sb_info *sbi = UFS_SB(root->d_sb); |
2a9807c0 | 1387 | unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
a447c093 | 1388 | const struct match_token *tp = tokens; |
2a9807c0 ED |
1389 | |
1390 | while (tp->token != Opt_onerror_panic && tp->token != mval) | |
1391 | ++tp; | |
1392 | BUG_ON(tp->token == Opt_onerror_panic); | |
1393 | seq_printf(seq, ",%s", tp->pattern); | |
1394 | ||
1395 | mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR; | |
1396 | while (tp->token != Opt_err && tp->token != mval) | |
1397 | ++tp; | |
1398 | BUG_ON(tp->token == Opt_err); | |
1399 | seq_printf(seq, ",%s", tp->pattern); | |
1400 | ||
1401 | return 0; | |
1402 | } | |
1403 | ||
647b7e87 | 1404 | static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 1405 | { |
726c3342 | 1406 | struct super_block *sb = dentry->d_sb; |
647b7e87 ED |
1407 | struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; |
1408 | unsigned flags = UFS_SB(sb)->s_flags; | |
647b7e87 | 1409 | struct ufs_super_block_third *usb3; |
41d577aa | 1410 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
1da177e4 | 1411 | |
dff7cfd3 | 1412 | mutex_lock(&UFS_SB(sb)->s_lock); |
647b7e87 | 1413 | usb3 = ubh_get_usb_third(uspi); |
1da177e4 | 1414 | |
c596961d | 1415 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1416 | buf->f_type = UFS2_MAGIC; |
c596961d | 1417 | else |
1da177e4 | 1418 | buf->f_type = UFS_MAGIC; |
c596961d AV |
1419 | |
1420 | buf->f_blocks = uspi->s_dsize; | |
1421 | buf->f_bfree = ufs_freefrags(uspi); | |
ee3ffd6c | 1422 | buf->f_ffree = uspi->cs_total.cs_nifree; |
1da177e4 | 1423 | buf->f_bsize = sb->s_blocksize; |
c596961d AV |
1424 | buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks) |
1425 | ? (buf->f_bfree - uspi->s_root_blocks) : 0; | |
1da177e4 LT |
1426 | buf->f_files = uspi->s_ncg * uspi->s_ipg; |
1427 | buf->f_namelen = UFS_MAXNAMLEN; | |
41d577aa CL |
1428 | buf->f_fsid.val[0] = (u32)id; |
1429 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
1da177e4 | 1430 | |
dff7cfd3 | 1431 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1432 | |
1433 | return 0; | |
1434 | } | |
1435 | ||
e18b890b | 1436 | static struct kmem_cache * ufs_inode_cachep; |
1da177e4 LT |
1437 | |
1438 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1439 | { | |
1440 | struct ufs_inode_info *ei; | |
61da3ae2 FF |
1441 | |
1442 | ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS); | |
1da177e4 LT |
1443 | if (!ei) |
1444 | return NULL; | |
61da3ae2 | 1445 | |
bb8c2d66 | 1446 | inode_set_iversion(&ei->vfs_inode, 1); |
724bb09f AV |
1447 | seqlock_init(&ei->meta_lock); |
1448 | mutex_init(&ei->truncate_mutex); | |
1da177e4 LT |
1449 | return &ei->vfs_inode; |
1450 | } | |
1451 | ||
fa0d7e3d | 1452 | static void ufs_i_callback(struct rcu_head *head) |
1da177e4 | 1453 | { |
fa0d7e3d | 1454 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
1455 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); |
1456 | } | |
1457 | ||
fa0d7e3d NP |
1458 | static void ufs_destroy_inode(struct inode *inode) |
1459 | { | |
1460 | call_rcu(&inode->i_rcu, ufs_i_callback); | |
1461 | } | |
1462 | ||
51cc5068 | 1463 | static void init_once(void *foo) |
1da177e4 LT |
1464 | { |
1465 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1466 | ||
a35afb83 | 1467 | inode_init_once(&ei->vfs_inode); |
1da177e4 | 1468 | } |
20c2df83 | 1469 | |
76ee4735 | 1470 | static int __init init_inodecache(void) |
1da177e4 | 1471 | { |
df5f3cfc DW |
1472 | ufs_inode_cachep = kmem_cache_create_usercopy("ufs_inode_cache", |
1473 | sizeof(struct ufs_inode_info), 0, | |
1474 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD| | |
1475 | SLAB_ACCOUNT), | |
1476 | offsetof(struct ufs_inode_info, i_u1.i_symlink), | |
1477 | sizeof_field(struct ufs_inode_info, | |
1478 | i_u1.i_symlink), | |
1479 | init_once); | |
1da177e4 LT |
1480 | if (ufs_inode_cachep == NULL) |
1481 | return -ENOMEM; | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | static void destroy_inodecache(void) | |
1486 | { | |
8c0a8537 KS |
1487 | /* |
1488 | * Make sure all delayed rcu free inodes are flushed before we | |
1489 | * destroy cache. | |
1490 | */ | |
1491 | rcu_barrier(); | |
1a1d92c1 | 1492 | kmem_cache_destroy(ufs_inode_cachep); |
1da177e4 LT |
1493 | } |
1494 | ||
ee9b6d61 | 1495 | static const struct super_operations ufs_super_ops = { |
1da177e4 LT |
1496 | .alloc_inode = ufs_alloc_inode, |
1497 | .destroy_inode = ufs_destroy_inode, | |
1da177e4 | 1498 | .write_inode = ufs_write_inode, |
58e8268c | 1499 | .evict_inode = ufs_evict_inode, |
1da177e4 | 1500 | .put_super = ufs_put_super, |
8c800656 | 1501 | .sync_fs = ufs_sync_fs, |
1da177e4 LT |
1502 | .statfs = ufs_statfs, |
1503 | .remount_fs = ufs_remount, | |
2a9807c0 | 1504 | .show_options = ufs_show_options, |
1da177e4 LT |
1505 | }; |
1506 | ||
152a0836 AV |
1507 | static struct dentry *ufs_mount(struct file_system_type *fs_type, |
1508 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1509 | { |
152a0836 | 1510 | return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super); |
1da177e4 LT |
1511 | } |
1512 | ||
1513 | static struct file_system_type ufs_fs_type = { | |
1514 | .owner = THIS_MODULE, | |
1515 | .name = "ufs", | |
152a0836 | 1516 | .mount = ufs_mount, |
1da177e4 LT |
1517 | .kill_sb = kill_block_super, |
1518 | .fs_flags = FS_REQUIRES_DEV, | |
1519 | }; | |
7f78e035 | 1520 | MODULE_ALIAS_FS("ufs"); |
1da177e4 LT |
1521 | |
1522 | static int __init init_ufs_fs(void) | |
1523 | { | |
1524 | int err = init_inodecache(); | |
1525 | if (err) | |
1526 | goto out1; | |
1527 | err = register_filesystem(&ufs_fs_type); | |
1528 | if (err) | |
1529 | goto out; | |
1530 | return 0; | |
1531 | out: | |
1532 | destroy_inodecache(); | |
1533 | out1: | |
1534 | return err; | |
1535 | } | |
1536 | ||
1537 | static void __exit exit_ufs_fs(void) | |
1538 | { | |
1539 | unregister_filesystem(&ufs_fs_type); | |
1540 | destroy_inodecache(); | |
1541 | } | |
1542 | ||
1543 | module_init(init_ufs_fs) | |
1544 | module_exit(exit_ufs_fs) | |
1545 | MODULE_LICENSE("GPL"); |