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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> | |
1da177e4 | 91 | |
e5420598 | 92 | #include "ufs_fs.h" |
bcd6d4ec | 93 | #include "ufs.h" |
1da177e4 LT |
94 | #include "swab.h" |
95 | #include "util.h" | |
96 | ||
f3e2a520 AD |
97 | static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) |
98 | { | |
99 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
100 | struct inode *inode; | |
101 | ||
102 | if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg) | |
103 | return ERR_PTR(-ESTALE); | |
104 | ||
105 | inode = ufs_iget(sb, ino); | |
106 | if (IS_ERR(inode)) | |
107 | return ERR_CAST(inode); | |
108 | if (generation && inode->i_generation != generation) { | |
109 | iput(inode); | |
110 | return ERR_PTR(-ESTALE); | |
111 | } | |
112 | return inode; | |
113 | } | |
114 | ||
115 | static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
116 | int fh_len, int fh_type) | |
117 | { | |
118 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
119 | } | |
120 | ||
121 | static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
122 | int fh_len, int fh_type) | |
123 | { | |
124 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
125 | } | |
126 | ||
127 | static struct dentry *ufs_get_parent(struct dentry *child) | |
128 | { | |
26fe5750 | 129 | struct qstr dot_dot = QSTR_INIT("..", 2); |
f3e2a520 AD |
130 | ino_t ino; |
131 | ||
2b0143b5 | 132 | ino = ufs_inode_by_name(d_inode(child), &dot_dot); |
f3e2a520 AD |
133 | if (!ino) |
134 | return ERR_PTR(-ENOENT); | |
fc64005c | 135 | return d_obtain_alias(ufs_iget(child->d_sb, ino)); |
f3e2a520 AD |
136 | } |
137 | ||
138 | static const struct export_operations ufs_export_ops = { | |
139 | .fh_to_dentry = ufs_fh_to_dentry, | |
140 | .fh_to_parent = ufs_fh_to_parent, | |
141 | .get_parent = ufs_get_parent, | |
142 | }; | |
143 | ||
abf5d15f | 144 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
145 | /* |
146 | * Print contents of ufs_super_block, useful for debugging | |
147 | */ | |
3313e292 | 148 | static void ufs_print_super_stuff(struct super_block *sb, |
647b7e87 ED |
149 | struct ufs_super_block_first *usb1, |
150 | struct ufs_super_block_second *usb2, | |
151 | struct ufs_super_block_third *usb3) | |
1da177e4 | 152 | { |
3313e292 ED |
153 | u32 magic = fs32_to_cpu(sb, usb3->fs_magic); |
154 | ||
a9814c5d FF |
155 | pr_debug("ufs_print_super_stuff\n"); |
156 | pr_debug(" magic: 0x%x\n", magic); | |
3313e292 | 157 | if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { |
a9814c5d FF |
158 | pr_debug(" fs_size: %llu\n", (unsigned long long) |
159 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); | |
160 | pr_debug(" fs_dsize: %llu\n", (unsigned long long) | |
161 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); | |
162 | pr_debug(" bsize: %u\n", | |
163 | fs32_to_cpu(sb, usb1->fs_bsize)); | |
164 | pr_debug(" fsize: %u\n", | |
165 | fs32_to_cpu(sb, usb1->fs_fsize)); | |
166 | pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); | |
167 | pr_debug(" fs_sblockloc: %llu\n", (unsigned long long) | |
168 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); | |
169 | pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long) | |
170 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); | |
171 | pr_debug(" cs_nbfree(No of free blocks): %llu\n", | |
172 | (unsigned long long) | |
173 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); | |
174 | pr_info(" cs_nifree(Num of free inodes): %llu\n", | |
175 | (unsigned long long) | |
176 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); | |
177 | pr_info(" cs_nffree(Num of free frags): %llu\n", | |
178 | (unsigned long long) | |
179 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); | |
180 | pr_info(" fs_maxsymlinklen: %u\n", | |
181 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); | |
647b7e87 | 182 | } else { |
a9814c5d FF |
183 | pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); |
184 | pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
185 | pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
186 | pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
187 | pr_debug(" cgoffset: %u\n", | |
188 | fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
189 | pr_debug(" ~cgmask: 0x%x\n", | |
190 | ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
191 | pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
192 | pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
193 | pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
194 | pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
195 | pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
196 | pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
197 | pr_debug(" fragshift: %u\n", | |
198 | fs32_to_cpu(sb, usb1->fs_fragshift)); | |
199 | pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
200 | pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
201 | pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
202 | pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
203 | pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
204 | pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
205 | pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
206 | pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
207 | pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
208 | pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
209 | pr_debug(" fstodb: %u\n", | |
210 | fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
211 | pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
212 | pr_debug(" ndir %u\n", | |
213 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
214 | pr_debug(" nifree %u\n", | |
215 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
216 | pr_debug(" nbfree %u\n", | |
217 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
218 | pr_debug(" nffree %u\n", | |
219 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
647b7e87 | 220 | } |
a9814c5d | 221 | pr_debug("\n"); |
1da177e4 LT |
222 | } |
223 | ||
224 | /* | |
225 | * Print contents of ufs_cylinder_group, useful for debugging | |
226 | */ | |
647b7e87 ED |
227 | static void ufs_print_cylinder_stuff(struct super_block *sb, |
228 | struct ufs_cylinder_group *cg) | |
1da177e4 | 229 | { |
a9814c5d FF |
230 | pr_debug("\nufs_print_cylinder_stuff\n"); |
231 | pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); | |
232 | pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); | |
233 | pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
234 | pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
235 | pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
236 | pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
237 | pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
238 | pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
239 | pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
240 | pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
241 | pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
242 | pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
243 | pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
244 | pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
245 | pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
1da177e4 LT |
246 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), |
247 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
248 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
249 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
a9814c5d FF |
250 | pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); |
251 | pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
252 | pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
253 | pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
254 | pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
255 | pr_debug(" clustersumoff %u\n", | |
256 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
257 | pr_debug(" clusteroff %u\n", | |
258 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
259 | pr_debug(" nclusterblks %u\n", | |
260 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
261 | pr_debug("\n"); | |
1da177e4 | 262 | } |
647b7e87 | 263 | #else |
3313e292 | 264 | # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
647b7e87 | 265 | # define ufs_print_cylinder_stuff(sb, cg) /**/ |
abf5d15f | 266 | #endif /* CONFIG_UFS_DEBUG */ |
1da177e4 | 267 | |
ee9b6d61 | 268 | static const struct super_operations ufs_super_ops; |
1da177e4 | 269 | |
1da177e4 LT |
270 | void ufs_error (struct super_block * sb, const char * function, |
271 | const char * fmt, ...) | |
272 | { | |
273 | struct ufs_sb_private_info * uspi; | |
274 | struct ufs_super_block_first * usb1; | |
7e1e4167 | 275 | struct va_format vaf; |
1da177e4 LT |
276 | va_list args; |
277 | ||
278 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 279 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 | 280 | |
bc98a42c | 281 | if (!sb_rdonly(sb)) { |
1da177e4 | 282 | usb1->fs_clean = UFS_FSBAD; |
9695ef16 | 283 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
9e9ad5f4 | 284 | ufs_mark_sb_dirty(sb); |
1751e8a6 | 285 | sb->s_flags |= SB_RDONLY; |
1da177e4 | 286 | } |
7e1e4167 FF |
287 | va_start(args, fmt); |
288 | vaf.fmt = fmt; | |
289 | vaf.va = &args; | |
1da177e4 LT |
290 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { |
291 | case UFS_MOUNT_ONERROR_PANIC: | |
7e1e4167 FF |
292 | panic("panic (device %s): %s: %pV\n", |
293 | sb->s_id, function, &vaf); | |
1da177e4 LT |
294 | |
295 | case UFS_MOUNT_ONERROR_LOCK: | |
296 | case UFS_MOUNT_ONERROR_UMOUNT: | |
297 | case UFS_MOUNT_ONERROR_REPAIR: | |
7e1e4167 FF |
298 | pr_crit("error (device %s): %s: %pV\n", |
299 | sb->s_id, function, &vaf); | |
300 | } | |
301 | va_end(args); | |
1da177e4 LT |
302 | } |
303 | ||
304 | void ufs_panic (struct super_block * sb, const char * function, | |
305 | const char * fmt, ...) | |
306 | { | |
307 | struct ufs_sb_private_info * uspi; | |
308 | struct ufs_super_block_first * usb1; | |
7e1e4167 | 309 | struct va_format vaf; |
1da177e4 LT |
310 | va_list args; |
311 | ||
312 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 313 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 | 314 | |
bc98a42c | 315 | if (!sb_rdonly(sb)) { |
1da177e4 | 316 | usb1->fs_clean = UFS_FSBAD; |
9695ef16 | 317 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
9e9ad5f4 | 318 | ufs_mark_sb_dirty(sb); |
1da177e4 | 319 | } |
7e1e4167 FF |
320 | va_start(args, fmt); |
321 | vaf.fmt = fmt; | |
322 | vaf.va = &args; | |
1751e8a6 | 323 | sb->s_flags |= SB_RDONLY; |
7e1e4167 FF |
324 | pr_crit("panic (device %s): %s: %pV\n", |
325 | sb->s_id, function, &vaf); | |
326 | va_end(args); | |
1da177e4 LT |
327 | } |
328 | ||
329 | void ufs_warning (struct super_block * sb, const char * function, | |
330 | const char * fmt, ...) | |
331 | { | |
7e1e4167 | 332 | struct va_format vaf; |
1da177e4 LT |
333 | va_list args; |
334 | ||
7e1e4167 FF |
335 | va_start(args, fmt); |
336 | vaf.fmt = fmt; | |
337 | vaf.va = &args; | |
338 | pr_warn("(device %s): %s: %pV\n", | |
339 | sb->s_id, function, &vaf); | |
340 | va_end(args); | |
1da177e4 LT |
341 | } |
342 | ||
343 | enum { | |
2a9807c0 ED |
344 | Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
345 | Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, | |
346 | Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, | |
347 | Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, | |
348 | Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, | |
349 | Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, | |
350 | Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, | |
351 | Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, | |
352 | Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, | |
353 | Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, | |
354 | Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, | |
355 | Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, | |
356 | Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, | |
357 | Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, | |
358 | Opt_err | |
1da177e4 LT |
359 | }; |
360 | ||
a447c093 | 361 | static const match_table_t tokens = { |
1da177e4 LT |
362 | {Opt_type_old, "ufstype=old"}, |
363 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
364 | {Opt_type_sun, "ufstype=sun"}, | |
252e211e | 365 | {Opt_type_sunos, "ufstype=sunos"}, |
1da177e4 LT |
366 | {Opt_type_44bsd, "ufstype=44bsd"}, |
367 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
368 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
369 | {Opt_type_hp, "ufstype=hp"}, | |
370 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
371 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
372 | {Opt_type_openstep, "ufstype=openstep"}, | |
2a9807c0 | 373 | /*end of possible ufs types */ |
1da177e4 LT |
374 | {Opt_onerror_panic, "onerror=panic"}, |
375 | {Opt_onerror_lock, "onerror=lock"}, | |
376 | {Opt_onerror_umount, "onerror=umount"}, | |
377 | {Opt_onerror_repair, "onerror=repair"}, | |
378 | {Opt_err, NULL} | |
379 | }; | |
380 | ||
381 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
382 | { | |
383 | char * p; | |
384 | ||
abf5d15f | 385 | UFSD("ENTER\n"); |
1da177e4 LT |
386 | |
387 | if (!options) | |
388 | return 1; | |
389 | ||
390 | while ((p = strsep(&options, ",")) != NULL) { | |
391 | substring_t args[MAX_OPT_ARGS]; | |
392 | int token; | |
393 | if (!*p) | |
394 | continue; | |
395 | ||
396 | token = match_token(p, tokens, args); | |
397 | switch (token) { | |
398 | case Opt_type_old: | |
399 | ufs_clear_opt (*mount_options, UFSTYPE); | |
400 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
401 | break; | |
402 | case Opt_type_sunx86: | |
403 | ufs_clear_opt (*mount_options, UFSTYPE); | |
404 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
405 | break; | |
406 | case Opt_type_sun: | |
407 | ufs_clear_opt (*mount_options, UFSTYPE); | |
408 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
409 | break; | |
252e211e MF |
410 | case Opt_type_sunos: |
411 | ufs_clear_opt(*mount_options, UFSTYPE); | |
412 | ufs_set_opt(*mount_options, UFSTYPE_SUNOS); | |
413 | break; | |
1da177e4 LT |
414 | case Opt_type_44bsd: |
415 | ufs_clear_opt (*mount_options, UFSTYPE); | |
416 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
417 | break; | |
418 | case Opt_type_ufs2: | |
419 | ufs_clear_opt(*mount_options, UFSTYPE); | |
420 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
421 | break; | |
422 | case Opt_type_hp: | |
423 | ufs_clear_opt (*mount_options, UFSTYPE); | |
424 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
425 | break; | |
426 | case Opt_type_nextstepcd: | |
427 | ufs_clear_opt (*mount_options, UFSTYPE); | |
428 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
429 | break; | |
430 | case Opt_type_nextstep: | |
431 | ufs_clear_opt (*mount_options, UFSTYPE); | |
432 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
433 | break; | |
434 | case Opt_type_openstep: | |
435 | ufs_clear_opt (*mount_options, UFSTYPE); | |
436 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
437 | break; | |
438 | case Opt_onerror_panic: | |
439 | ufs_clear_opt (*mount_options, ONERROR); | |
440 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
441 | break; | |
442 | case Opt_onerror_lock: | |
443 | ufs_clear_opt (*mount_options, ONERROR); | |
444 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
445 | break; | |
446 | case Opt_onerror_umount: | |
447 | ufs_clear_opt (*mount_options, ONERROR); | |
448 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
449 | break; | |
450 | case Opt_onerror_repair: | |
de771bda | 451 | pr_err("Unable to do repair on error, will lock lock instead\n"); |
1da177e4 LT |
452 | ufs_clear_opt (*mount_options, ONERROR); |
453 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
454 | break; | |
455 | default: | |
de771bda | 456 | pr_err("Invalid option: \"%s\" or missing value\n", p); |
1da177e4 LT |
457 | return 0; |
458 | } | |
459 | } | |
460 | return 1; | |
461 | } | |
462 | ||
463 | /* | |
25985edc LDM |
464 | * Different types of UFS hold fs_cstotal in different |
465 | * places, and use different data structure for it. | |
466 | * To make things simpler we just copy fs_cstotal to ufs_sb_private_info | |
1da177e4 | 467 | */ |
ee3ffd6c | 468 | static void ufs_setup_cstotal(struct super_block *sb) |
e295cfcb | 469 | { |
647b7e87 ED |
470 | struct ufs_sb_info *sbi = UFS_SB(sb); |
471 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
ee3ffd6c ED |
472 | struct ufs_super_block_first *usb1; |
473 | struct ufs_super_block_second *usb2; | |
647b7e87 | 474 | struct ufs_super_block_third *usb3; |
ee3ffd6c ED |
475 | unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
476 | ||
477 | UFSD("ENTER, mtype=%u\n", mtype); | |
478 | usb1 = ubh_get_usb_first(uspi); | |
479 | usb2 = ubh_get_usb_second(uspi); | |
480 | usb3 = ubh_get_usb_third(uspi); | |
481 | ||
482 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
96ecff14 | 483 | (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) || |
ee3ffd6c ED |
484 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { |
485 | /*we have statistic in different place, then usual*/ | |
486 | uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); | |
487 | uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); | |
488 | uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); | |
489 | uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); | |
490 | } else { | |
491 | uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); | |
492 | uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); | |
493 | uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
494 | uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
495 | } | |
496 | UFSD("EXIT\n"); | |
497 | } | |
498 | ||
499 | /* | |
500 | * Read on-disk structures associated with cylinder groups | |
501 | */ | |
502 | static int ufs_read_cylinder_structures(struct super_block *sb) | |
503 | { | |
504 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
505 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
506 | struct ufs_buffer_head * ubh; |
507 | unsigned char * base, * space; | |
508 | unsigned size, blks, i; | |
ee3ffd6c | 509 | |
abf5d15f | 510 | UFSD("ENTER\n"); |
1da177e4 | 511 | |
1da177e4 LT |
512 | /* |
513 | * Read cs structures from (usually) first data block | |
514 | * on the device. | |
515 | */ | |
516 | size = uspi->s_cssize; | |
517 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
788257d6 | 518 | base = space = kmalloc(size, GFP_NOFS); |
1da177e4 LT |
519 | if (!base) |
520 | goto failed; | |
e295cfcb | 521 | sbi->s_csp = (struct ufs_csum *)space; |
1da177e4 LT |
522 | for (i = 0; i < blks; i += uspi->s_fpb) { |
523 | size = uspi->s_bsize; | |
524 | if (i + uspi->s_fpb > blks) | |
525 | size = (blks - i) * uspi->s_fsize; | |
526 | ||
3313e292 | 527 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
7b4ee73e E |
528 | |
529 | if (!ubh) | |
530 | goto failed; | |
531 | ||
532 | ubh_ubhcpymem (space, ubh, size); | |
7b4ee73e | 533 | |
1da177e4 LT |
534 | space += size; |
535 | ubh_brelse (ubh); | |
536 | ubh = NULL; | |
537 | } | |
538 | ||
539 | /* | |
540 | * Read cylinder group (we read only first fragment from block | |
541 | * at this time) and prepare internal data structures for cg caching. | |
542 | */ | |
788257d6 | 543 | if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS))) |
1da177e4 LT |
544 | goto failed; |
545 | for (i = 0; i < uspi->s_ncg; i++) | |
546 | sbi->s_ucg[i] = NULL; | |
547 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
548 | sbi->s_ucpi[i] = NULL; | |
549 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
550 | } | |
551 | for (i = 0; i < uspi->s_ncg; i++) { | |
abf5d15f | 552 | UFSD("read cg %u\n", i); |
1da177e4 LT |
553 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
554 | goto failed; | |
555 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
556 | goto failed; | |
647b7e87 | 557 | |
1da177e4 | 558 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
1da177e4 LT |
559 | } |
560 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
788257d6 | 561 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS))) |
1da177e4 LT |
562 | goto failed; |
563 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
564 | } | |
565 | sbi->s_cg_loaded = 0; | |
abf5d15f | 566 | UFSD("EXIT\n"); |
1da177e4 LT |
567 | return 1; |
568 | ||
569 | failed: | |
f99d49ad | 570 | kfree (base); |
1da177e4 LT |
571 | if (sbi->s_ucg) { |
572 | for (i = 0; i < uspi->s_ncg; i++) | |
f99d49ad JJ |
573 | if (sbi->s_ucg[i]) |
574 | brelse (sbi->s_ucg[i]); | |
1da177e4 LT |
575 | kfree (sbi->s_ucg); |
576 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
f99d49ad | 577 | kfree (sbi->s_ucpi[i]); |
1da177e4 | 578 | } |
abf5d15f | 579 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
580 | return 0; |
581 | } | |
582 | ||
583 | /* | |
ee3ffd6c | 584 | * Sync our internal copy of fs_cstotal with disk |
1da177e4 | 585 | */ |
ee3ffd6c | 586 | static void ufs_put_cstotal(struct super_block *sb) |
e295cfcb | 587 | { |
ee3ffd6c ED |
588 | unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
589 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
590 | struct ufs_super_block_first *usb1; | |
591 | struct ufs_super_block_second *usb2; | |
592 | struct ufs_super_block_third *usb3; | |
593 | ||
594 | UFSD("ENTER\n"); | |
595 | usb1 = ubh_get_usb_first(uspi); | |
596 | usb2 = ubh_get_usb_second(uspi); | |
597 | usb3 = ubh_get_usb_third(uspi); | |
598 | ||
96ecff14 | 599 | if (mtype == UFS_MOUNT_UFSTYPE_UFS2) { |
ee3ffd6c ED |
600 | /*we have statistic in different place, then usual*/ |
601 | usb2->fs_un.fs_u2.cs_ndir = | |
602 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
603 | usb2->fs_un.fs_u2.cs_nbfree = | |
604 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
605 | usb3->fs_un1.fs_u2.cs_nifree = | |
606 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
607 | usb3->fs_un1.fs_u2.cs_nffree = | |
608 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
96ecff14 | 609 | goto out; |
ee3ffd6c | 610 | } |
96ecff14 AV |
611 | |
612 | if (mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
613 | (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) { | |
614 | /* store stats in both old and new places */ | |
615 | usb2->fs_un.fs_u2.cs_ndir = | |
616 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
617 | usb2->fs_un.fs_u2.cs_nbfree = | |
618 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
619 | usb3->fs_un1.fs_u2.cs_nifree = | |
620 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
621 | usb3->fs_un1.fs_u2.cs_nffree = | |
622 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
ee3ffd6c | 623 | } |
96ecff14 AV |
624 | usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir); |
625 | usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); | |
626 | usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree); | |
627 | usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree); | |
628 | out: | |
ee3ffd6c | 629 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
3313e292 | 630 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
ee3ffd6c ED |
631 | UFSD("EXIT\n"); |
632 | } | |
633 | ||
634 | /** | |
635 | * ufs_put_super_internal() - put on-disk intrenal structures | |
636 | * @sb: pointer to super_block structure | |
637 | * Put on-disk structures associated with cylinder groups | |
638 | * and write them back to disk, also update cs_total on disk | |
639 | */ | |
640 | static void ufs_put_super_internal(struct super_block *sb) | |
641 | { | |
642 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
643 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
644 | struct ufs_buffer_head * ubh; |
645 | unsigned char * base, * space; | |
646 | unsigned blks, size, i; | |
ee3ffd6c | 647 | |
1da177e4 | 648 | |
abf5d15f | 649 | UFSD("ENTER\n"); |
6cfd0148 | 650 | |
ee3ffd6c | 651 | ufs_put_cstotal(sb); |
1da177e4 LT |
652 | size = uspi->s_cssize; |
653 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
e295cfcb | 654 | base = space = (char*) sbi->s_csp; |
1da177e4 LT |
655 | for (i = 0; i < blks; i += uspi->s_fpb) { |
656 | size = uspi->s_bsize; | |
657 | if (i + uspi->s_fpb > blks) | |
658 | size = (blks - i) * uspi->s_fsize; | |
3313e292 | 659 | |
1da177e4 | 660 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
3313e292 | 661 | |
1da177e4 LT |
662 | ubh_memcpyubh (ubh, space, size); |
663 | space += size; | |
664 | ubh_mark_buffer_uptodate (ubh, 1); | |
665 | ubh_mark_buffer_dirty (ubh); | |
666 | ubh_brelse (ubh); | |
667 | } | |
668 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
669 | ufs_put_cylinder (sb, i); | |
670 | kfree (sbi->s_ucpi[i]); | |
671 | } | |
672 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
673 | kfree (sbi->s_ucpi[i]); | |
674 | for (i = 0; i < uspi->s_ncg; i++) | |
675 | brelse (sbi->s_ucg[i]); | |
676 | kfree (sbi->s_ucg); | |
677 | kfree (base); | |
6cfd0148 | 678 | |
abf5d15f | 679 | UFSD("EXIT\n"); |
1da177e4 LT |
680 | } |
681 | ||
7bd54ef7 AB |
682 | static int ufs_sync_fs(struct super_block *sb, int wait) |
683 | { | |
684 | struct ufs_sb_private_info * uspi; | |
685 | struct ufs_super_block_first * usb1; | |
686 | struct ufs_super_block_third * usb3; | |
687 | unsigned flags; | |
688 | ||
cdd9eefd | 689 | mutex_lock(&UFS_SB(sb)->s_lock); |
7bd54ef7 AB |
690 | |
691 | UFSD("ENTER\n"); | |
692 | ||
693 | flags = UFS_SB(sb)->s_flags; | |
694 | uspi = UFS_SB(sb)->s_uspi; | |
695 | usb1 = ubh_get_usb_first(uspi); | |
696 | usb3 = ubh_get_usb_third(uspi); | |
697 | ||
698 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); | |
699 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
700 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
701 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
702 | ufs_set_fs_state(sb, usb1, usb3, | |
703 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
704 | ufs_put_cstotal(sb); | |
7bd54ef7 AB |
705 | |
706 | UFSD("EXIT\n"); | |
cdd9eefd | 707 | mutex_unlock(&UFS_SB(sb)->s_lock); |
7bd54ef7 AB |
708 | |
709 | return 0; | |
710 | } | |
711 | ||
9e9ad5f4 | 712 | static void delayed_sync_fs(struct work_struct *work) |
7bd54ef7 | 713 | { |
9e9ad5f4 AB |
714 | struct ufs_sb_info *sbi; |
715 | ||
716 | sbi = container_of(work, struct ufs_sb_info, sync_work.work); | |
717 | ||
718 | spin_lock(&sbi->work_lock); | |
719 | sbi->work_queued = 0; | |
720 | spin_unlock(&sbi->work_lock); | |
721 | ||
722 | ufs_sync_fs(sbi->sb, 1); | |
723 | } | |
724 | ||
725 | void ufs_mark_sb_dirty(struct super_block *sb) | |
726 | { | |
727 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
728 | unsigned long delay; | |
729 | ||
730 | spin_lock(&sbi->work_lock); | |
731 | if (!sbi->work_queued) { | |
732 | delay = msecs_to_jiffies(dirty_writeback_interval * 10); | |
733 | queue_delayed_work(system_long_wq, &sbi->sync_work, delay); | |
734 | sbi->work_queued = 1; | |
735 | } | |
736 | spin_unlock(&sbi->work_lock); | |
7bd54ef7 AB |
737 | } |
738 | ||
739 | static void ufs_put_super(struct super_block *sb) | |
740 | { | |
741 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
742 | ||
743 | UFSD("ENTER\n"); | |
744 | ||
bc98a42c | 745 | if (!sb_rdonly(sb)) |
7bd54ef7 | 746 | ufs_put_super_internal(sb); |
9e9ad5f4 | 747 | cancel_delayed_work_sync(&sbi->sync_work); |
7bd54ef7 AB |
748 | |
749 | ubh_brelse_uspi (sbi->s_uspi); | |
750 | kfree (sbi->s_uspi); | |
751 | kfree (sbi); | |
752 | sb->s_fs_info = NULL; | |
753 | UFSD("EXIT\n"); | |
754 | return; | |
755 | } | |
756 | ||
6b0d144f AV |
757 | static u64 ufs_max_bytes(struct super_block *sb) |
758 | { | |
759 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
760 | int bits = uspi->s_apbshift; | |
761 | u64 res; | |
762 | ||
763 | if (bits > 21) | |
764 | res = ~0ULL; | |
765 | else | |
766 | res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) + | |
767 | (1LL << (3*bits)); | |
768 | ||
769 | if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift)) | |
770 | return MAX_LFS_FILESIZE; | |
771 | return res << uspi->s_bshift; | |
772 | } | |
773 | ||
1da177e4 LT |
774 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) |
775 | { | |
776 | struct ufs_sb_info * sbi; | |
777 | struct ufs_sb_private_info * uspi; | |
778 | struct ufs_super_block_first * usb1; | |
779 | struct ufs_super_block_second * usb2; | |
780 | struct ufs_super_block_third * usb3; | |
1da177e4 LT |
781 | struct ufs_buffer_head * ubh; |
782 | struct inode *inode; | |
783 | unsigned block_size, super_block_size; | |
784 | unsigned flags; | |
7b4ee73e | 785 | unsigned super_block_offset; |
9e6766cc | 786 | unsigned maxsymlen; |
b55c460d | 787 | int ret = -EINVAL; |
1da177e4 LT |
788 | |
789 | uspi = NULL; | |
790 | ubh = NULL; | |
791 | flags = 0; | |
792 | ||
abf5d15f | 793 | UFSD("ENTER\n"); |
0244756e FF |
794 | |
795 | #ifndef CONFIG_UFS_FS_WRITE | |
bc98a42c | 796 | if (!sb_rdonly(sb)) { |
a9814c5d | 797 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); |
0244756e FF |
798 | return -EROFS; |
799 | } | |
800 | #endif | |
1da177e4 | 801 | |
f8314dc6 | 802 | sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); |
1da177e4 LT |
803 | if (!sbi) |
804 | goto failed_nomem; | |
805 | sb->s_fs_info = sbi; | |
9e9ad5f4 | 806 | sbi->sb = sb; |
1da177e4 | 807 | |
bc98a42c | 808 | UFSD("flag %u\n", (int)(sb_rdonly(sb))); |
1da177e4 | 809 | |
e4f95517 | 810 | mutex_init(&sbi->s_lock); |
9e9ad5f4 AB |
811 | spin_lock_init(&sbi->work_lock); |
812 | INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); | |
1da177e4 LT |
813 | /* |
814 | * Set default mount options | |
815 | * Parse mount options | |
816 | */ | |
817 | sbi->s_mount_opt = 0; | |
818 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
819 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
a9814c5d | 820 | pr_err("wrong mount options\n"); |
1da177e4 LT |
821 | goto failed; |
822 | } | |
823 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
824 | if (!silent) | |
a9814c5d | 825 | pr_err("You didn't specify the type of your ufs filesystem\n\n" |
1da177e4 | 826 | "mount -t ufs -o ufstype=" |
c690a722 | 827 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
1da177e4 LT |
828 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
829 | "default is ufstype=old\n"); | |
830 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
831 | } | |
832 | ||
252e211e MF |
833 | uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL); |
834 | sbi->s_uspi = uspi; | |
1da177e4 LT |
835 | if (!uspi) |
836 | goto failed; | |
f336953b | 837 | uspi->s_dirblksize = UFS_SECTOR_SIZE; |
7b4ee73e E |
838 | super_block_offset=UFS_SBLOCK; |
839 | ||
239e250e RN |
840 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
841 | ||
1da177e4 LT |
842 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
843 | case UFS_MOUNT_UFSTYPE_44BSD: | |
abf5d15f | 844 | UFSD("ufstype=44bsd\n"); |
1da177e4 LT |
845 | uspi->s_fsize = block_size = 512; |
846 | uspi->s_fmask = ~(512 - 1); | |
847 | uspi->s_fshift = 9; | |
848 | uspi->s_sbsize = super_block_size = 1536; | |
849 | uspi->s_sbbase = 0; | |
850 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
851 | break; | |
852 | case UFS_MOUNT_UFSTYPE_UFS2: | |
abf5d15f | 853 | UFSD("ufstype=ufs2\n"); |
7b4ee73e | 854 | super_block_offset=SBLOCK_UFS2; |
1da177e4 LT |
855 | uspi->s_fsize = block_size = 512; |
856 | uspi->s_fmask = ~(512 - 1); | |
857 | uspi->s_fshift = 9; | |
858 | uspi->s_sbsize = super_block_size = 1536; | |
859 | uspi->s_sbbase = 0; | |
860 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
1da177e4 LT |
861 | break; |
862 | ||
863 | case UFS_MOUNT_UFSTYPE_SUN: | |
abf5d15f | 864 | UFSD("ufstype=sun\n"); |
1da177e4 LT |
865 | uspi->s_fsize = block_size = 1024; |
866 | uspi->s_fmask = ~(1024 - 1); | |
867 | uspi->s_fshift = 10; | |
868 | uspi->s_sbsize = super_block_size = 2048; | |
869 | uspi->s_sbbase = 0; | |
252e211e | 870 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
871 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; |
872 | break; | |
873 | ||
252e211e | 874 | case UFS_MOUNT_UFSTYPE_SUNOS: |
d4beaabd | 875 | UFSD("ufstype=sunos\n"); |
252e211e MF |
876 | uspi->s_fsize = block_size = 1024; |
877 | uspi->s_fmask = ~(1024 - 1); | |
878 | uspi->s_fshift = 10; | |
879 | uspi->s_sbsize = 2048; | |
880 | super_block_size = 2048; | |
881 | uspi->s_sbbase = 0; | |
882 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ | |
883 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; | |
884 | break; | |
885 | ||
1da177e4 | 886 | case UFS_MOUNT_UFSTYPE_SUNx86: |
abf5d15f | 887 | UFSD("ufstype=sunx86\n"); |
1da177e4 LT |
888 | uspi->s_fsize = block_size = 1024; |
889 | uspi->s_fmask = ~(1024 - 1); | |
890 | uspi->s_fshift = 10; | |
891 | uspi->s_sbsize = super_block_size = 2048; | |
892 | uspi->s_sbbase = 0; | |
252e211e | 893 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
894 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; |
895 | break; | |
896 | ||
897 | case UFS_MOUNT_UFSTYPE_OLD: | |
abf5d15f | 898 | UFSD("ufstype=old\n"); |
1da177e4 LT |
899 | uspi->s_fsize = block_size = 1024; |
900 | uspi->s_fmask = ~(1024 - 1); | |
901 | uspi->s_fshift = 10; | |
902 | uspi->s_sbsize = super_block_size = 2048; | |
903 | uspi->s_sbbase = 0; | |
904 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
bc98a42c | 905 | if (!sb_rdonly(sb)) { |
1da177e4 | 906 | if (!silent) |
a9814c5d | 907 | pr_info("ufstype=old is supported read-only\n"); |
1751e8a6 | 908 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
909 | } |
910 | break; | |
911 | ||
912 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
abf5d15f | 913 | UFSD("ufstype=nextstep\n"); |
1da177e4 LT |
914 | uspi->s_fsize = block_size = 1024; |
915 | uspi->s_fmask = ~(1024 - 1); | |
916 | uspi->s_fshift = 10; | |
917 | uspi->s_sbsize = super_block_size = 2048; | |
918 | uspi->s_sbbase = 0; | |
0c664f97 | 919 | uspi->s_dirblksize = 1024; |
1da177e4 | 920 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
bc98a42c | 921 | if (!sb_rdonly(sb)) { |
1da177e4 | 922 | if (!silent) |
a9814c5d | 923 | pr_info("ufstype=nextstep is supported read-only\n"); |
1751e8a6 | 924 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
925 | } |
926 | break; | |
927 | ||
928 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
abf5d15f | 929 | UFSD("ufstype=nextstep-cd\n"); |
1da177e4 LT |
930 | uspi->s_fsize = block_size = 2048; |
931 | uspi->s_fmask = ~(2048 - 1); | |
932 | uspi->s_fshift = 11; | |
933 | uspi->s_sbsize = super_block_size = 2048; | |
934 | uspi->s_sbbase = 0; | |
0c664f97 | 935 | uspi->s_dirblksize = 1024; |
1da177e4 | 936 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
bc98a42c | 937 | if (!sb_rdonly(sb)) { |
1da177e4 | 938 | if (!silent) |
a9814c5d | 939 | pr_info("ufstype=nextstep-cd is supported read-only\n"); |
1751e8a6 | 940 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
941 | } |
942 | break; | |
943 | ||
944 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
abf5d15f | 945 | UFSD("ufstype=openstep\n"); |
1da177e4 LT |
946 | uspi->s_fsize = block_size = 1024; |
947 | uspi->s_fmask = ~(1024 - 1); | |
948 | uspi->s_fshift = 10; | |
949 | uspi->s_sbsize = super_block_size = 2048; | |
950 | uspi->s_sbbase = 0; | |
f336953b | 951 | uspi->s_dirblksize = 1024; |
1da177e4 | 952 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
bc98a42c | 953 | if (!sb_rdonly(sb)) { |
1da177e4 | 954 | if (!silent) |
a9814c5d | 955 | pr_info("ufstype=openstep is supported read-only\n"); |
1751e8a6 | 956 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
957 | } |
958 | break; | |
959 | ||
960 | case UFS_MOUNT_UFSTYPE_HP: | |
abf5d15f | 961 | UFSD("ufstype=hp\n"); |
1da177e4 LT |
962 | uspi->s_fsize = block_size = 1024; |
963 | uspi->s_fmask = ~(1024 - 1); | |
964 | uspi->s_fshift = 10; | |
965 | uspi->s_sbsize = super_block_size = 2048; | |
966 | uspi->s_sbbase = 0; | |
967 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
bc98a42c | 968 | if (!sb_rdonly(sb)) { |
1da177e4 | 969 | if (!silent) |
a9814c5d | 970 | pr_info("ufstype=hp is supported read-only\n"); |
1751e8a6 | 971 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
972 | } |
973 | break; | |
974 | default: | |
975 | if (!silent) | |
a9814c5d | 976 | pr_err("unknown ufstype\n"); |
1da177e4 LT |
977 | goto failed; |
978 | } | |
979 | ||
980 | again: | |
981 | if (!sb_set_blocksize(sb, block_size)) { | |
de771bda | 982 | pr_err("failed to set blocksize\n"); |
1da177e4 LT |
983 | goto failed; |
984 | } | |
985 | ||
986 | /* | |
987 | * read ufs super block from device | |
988 | */ | |
7b4ee73e E |
989 | |
990 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); | |
991 | ||
1da177e4 LT |
992 | if (!ubh) |
993 | goto failed; | |
994 | ||
7b4ee73e E |
995 | usb1 = ubh_get_usb_first(uspi); |
996 | usb2 = ubh_get_usb_second(uspi); | |
997 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 998 | |
252e211e MF |
999 | /* Sort out mod used on SunOS 4.1.3 for fs_state */ |
1000 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
1001 | if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && | |
1002 | (uspi->s_postblformat != UFS_42POSTBLFMT)) { | |
1003 | flags &= ~UFS_ST_MASK; | |
1004 | flags |= UFS_ST_SUN; | |
1005 | } | |
1006 | ||
96ecff14 AV |
1007 | if ((flags & UFS_ST_MASK) == UFS_ST_44BSD && |
1008 | uspi->s_postblformat == UFS_42POSTBLFMT) { | |
1009 | if (!silent) | |
1010 | pr_err("this is not a 44bsd filesystem"); | |
1011 | goto failed; | |
1012 | } | |
1013 | ||
1da177e4 LT |
1014 | /* |
1015 | * Check ufs magic number | |
1016 | */ | |
1017 | sbi->s_bytesex = BYTESEX_LE; | |
1018 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
1019 | case UFS_MAGIC: | |
d27d7a9a | 1020 | case UFS_MAGIC_BW: |
1da177e4 LT |
1021 | case UFS2_MAGIC: |
1022 | case UFS_MAGIC_LFN: | |
1023 | case UFS_MAGIC_FEA: | |
1024 | case UFS_MAGIC_4GB: | |
1025 | goto magic_found; | |
1026 | } | |
1027 | sbi->s_bytesex = BYTESEX_BE; | |
1028 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
1029 | case UFS_MAGIC: | |
d27d7a9a | 1030 | case UFS_MAGIC_BW: |
1da177e4 LT |
1031 | case UFS2_MAGIC: |
1032 | case UFS_MAGIC_LFN: | |
1033 | case UFS_MAGIC_FEA: | |
1034 | case UFS_MAGIC_4GB: | |
1035 | goto magic_found; | |
1036 | } | |
1037 | ||
1038 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
1039 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
1040 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
1041 | && uspi->s_sbbase < 256) { | |
1042 | ubh_brelse_uspi(uspi); | |
1043 | ubh = NULL; | |
1044 | uspi->s_sbbase += 8; | |
1045 | goto again; | |
1046 | } | |
1047 | if (!silent) | |
07bc94fd | 1048 | pr_err("%s(): bad magic number\n", __func__); |
1da177e4 LT |
1049 | goto failed; |
1050 | ||
1051 | magic_found: | |
1052 | /* | |
1053 | * Check block and fragment sizes | |
1054 | */ | |
1055 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
1056 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
1057 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
1058 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1059 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
1060 | ||
9e8c4273 | 1061 | if (!is_power_of_2(uspi->s_fsize)) { |
07bc94fd FF |
1062 | pr_err("%s(): fragment size %u is not a power of 2\n", |
1063 | __func__, uspi->s_fsize); | |
a9814c5d | 1064 | goto failed; |
1da177e4 LT |
1065 | } |
1066 | if (uspi->s_fsize < 512) { | |
07bc94fd FF |
1067 | pr_err("%s(): fragment size %u is too small\n", |
1068 | __func__, uspi->s_fsize); | |
1da177e4 LT |
1069 | goto failed; |
1070 | } | |
1071 | if (uspi->s_fsize > 4096) { | |
07bc94fd FF |
1072 | pr_err("%s(): fragment size %u is too large\n", |
1073 | __func__, uspi->s_fsize); | |
1da177e4 LT |
1074 | goto failed; |
1075 | } | |
9e8c4273 | 1076 | if (!is_power_of_2(uspi->s_bsize)) { |
07bc94fd FF |
1077 | pr_err("%s(): block size %u is not a power of 2\n", |
1078 | __func__, uspi->s_bsize); | |
1da177e4 LT |
1079 | goto failed; |
1080 | } | |
1081 | if (uspi->s_bsize < 4096) { | |
07bc94fd FF |
1082 | pr_err("%s(): block size %u is too small\n", |
1083 | __func__, uspi->s_bsize); | |
1da177e4 LT |
1084 | goto failed; |
1085 | } | |
1086 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
07bc94fd FF |
1087 | pr_err("%s(): too many fragments per block (%u)\n", |
1088 | __func__, uspi->s_bsize / uspi->s_fsize); | |
1da177e4 LT |
1089 | goto failed; |
1090 | } | |
1091 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
1092 | ubh_brelse_uspi(uspi); | |
1093 | ubh = NULL; | |
1094 | block_size = uspi->s_fsize; | |
1095 | super_block_size = uspi->s_sbsize; | |
abf5d15f | 1096 | UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
1da177e4 LT |
1097 | goto again; |
1098 | } | |
1099 | ||
f664f1f9 | 1100 | sbi->s_flags = flags;/*after that line some functions use s_flags*/ |
3313e292 | 1101 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
1da177e4 LT |
1102 | |
1103 | /* | |
1104 | * Check, if file system was correctly unmounted. | |
1105 | * If not, make it read only. | |
1106 | */ | |
f664f1f9 AM |
1107 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || |
1108 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
1109 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
1110 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
1111 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
1112 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
1da177e4 LT |
1113 | switch(usb1->fs_clean) { |
1114 | case UFS_FSCLEAN: | |
abf5d15f | 1115 | UFSD("fs is clean\n"); |
1da177e4 LT |
1116 | break; |
1117 | case UFS_FSSTABLE: | |
abf5d15f | 1118 | UFSD("fs is stable\n"); |
b3a0fd4d AV |
1119 | break; |
1120 | case UFS_FSLOG: | |
1121 | UFSD("fs is logging fs\n"); | |
1da177e4 LT |
1122 | break; |
1123 | case UFS_FSOSF1: | |
abf5d15f | 1124 | UFSD("fs is DEC OSF/1\n"); |
1da177e4 LT |
1125 | break; |
1126 | case UFS_FSACTIVE: | |
07bc94fd | 1127 | pr_err("%s(): fs is active\n", __func__); |
1751e8a6 | 1128 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1129 | break; |
1130 | case UFS_FSBAD: | |
07bc94fd | 1131 | pr_err("%s(): fs is bad\n", __func__); |
1751e8a6 | 1132 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1133 | break; |
1134 | default: | |
07bc94fd FF |
1135 | pr_err("%s(): can't grok fs_clean 0x%x\n", |
1136 | __func__, usb1->fs_clean); | |
1751e8a6 | 1137 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1138 | break; |
1139 | } | |
ee3ffd6c | 1140 | } else { |
07bc94fd | 1141 | pr_err("%s(): fs needs fsck\n", __func__); |
1751e8a6 | 1142 | sb->s_flags |= SB_RDONLY; |
1da177e4 LT |
1143 | } |
1144 | ||
1145 | /* | |
1146 | * Read ufs_super_block into internal data structures | |
1147 | */ | |
1148 | sb->s_op = &ufs_super_ops; | |
f3e2a520 | 1149 | sb->s_export_op = &ufs_export_ops; |
123e9caf | 1150 | |
1da177e4 LT |
1151 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); |
1152 | ||
1153 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
1154 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
1155 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
1156 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
1157 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
1158 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
1159 | ||
1160 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
c596961d AV |
1161 | uspi->s_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); |
1162 | uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); | |
647b7e87 | 1163 | } else { |
1da177e4 LT |
1164 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); |
1165 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
1166 | } | |
1167 | ||
1168 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
1169 | /* s_bsize already set */ | |
1170 | /* s_fsize already set */ | |
1171 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
1172 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
1173 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
1174 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1175 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
1176 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
abf5d15f ED |
1177 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, |
1178 | uspi->s_fshift); | |
1da177e4 LT |
1179 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); |
1180 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
1181 | /* s_sbsize already set */ | |
1182 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
1183 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
1184 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
1185 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
1186 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
1187 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
1188 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
1189 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
3313e292 ED |
1190 | |
1191 | if (uspi->fs_magic == UFS2_MAGIC) | |
1192 | uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); | |
1193 | else | |
1194 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
1195 | ||
1da177e4 LT |
1196 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); |
1197 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
1198 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
1199 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
1200 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
1201 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
1202 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
647b7e87 ED |
1203 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); |
1204 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); | |
1da177e4 LT |
1205 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); |
1206 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
1da177e4 LT |
1207 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); |
1208 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
1209 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
1210 | ||
c596961d AV |
1211 | uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize, |
1212 | uspi->s_minfree, 100); | |
77e9ce32 AV |
1213 | if (uspi->s_minfree <= 5) { |
1214 | uspi->s_time_to_space = ~0ULL; | |
1215 | uspi->s_space_to_time = 0; | |
1216 | usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE); | |
1217 | } else { | |
1218 | uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1; | |
1219 | uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize, | |
1220 | uspi->s_minfree - 2, 100) - 1; | |
1221 | } | |
c596961d | 1222 | |
1da177e4 LT |
1223 | /* |
1224 | * Compute another frequently used values | |
1225 | */ | |
1226 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
abf5d15f | 1227 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1228 | uspi->s_apbshift = uspi->s_bshift - 3; |
abf5d15f | 1229 | else |
1da177e4 | 1230 | uspi->s_apbshift = uspi->s_bshift - 2; |
abf5d15f | 1231 | |
1da177e4 LT |
1232 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
1233 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
1234 | uspi->s_apb = 1 << uspi->s_apbshift; | |
1235 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
1236 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
1237 | uspi->s_apbmask = uspi->s_apb - 1; | |
1238 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
1239 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
1240 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
1241 | uspi->s_bpf = uspi->s_fsize << 3; | |
1242 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
1243 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
90b315af ED |
1244 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || |
1245 | (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) | |
1da177e4 | 1246 | uspi->s_maxsymlinklen = |
647b7e87 | 1247 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); |
1da177e4 | 1248 | |
9e6766cc DG |
1249 | if (uspi->fs_magic == UFS2_MAGIC) |
1250 | maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); | |
1251 | else | |
1252 | maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); | |
1253 | if (uspi->s_maxsymlinklen > maxsymlen) { | |
1254 | ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " | |
1255 | "fast symlink size (%u)\n", uspi->s_maxsymlinklen); | |
1256 | uspi->s_maxsymlinklen = maxsymlen; | |
1257 | } | |
6b0d144f | 1258 | sb->s_maxbytes = ufs_max_bytes(sb); |
8de52778 | 1259 | sb->s_max_links = UFS_LINK_MAX; |
9e6766cc | 1260 | |
b55c460d DH |
1261 | inode = ufs_iget(sb, UFS_ROOTINO); |
1262 | if (IS_ERR(inode)) { | |
1263 | ret = PTR_ERR(inode); | |
1da177e4 | 1264 | goto failed; |
b55c460d | 1265 | } |
48fde701 | 1266 | sb->s_root = d_make_root(inode); |
b55c460d DH |
1267 | if (!sb->s_root) { |
1268 | ret = -ENOMEM; | |
48fde701 | 1269 | goto failed; |
b55c460d | 1270 | } |
1da177e4 | 1271 | |
ee3ffd6c | 1272 | ufs_setup_cstotal(sb); |
1da177e4 LT |
1273 | /* |
1274 | * Read cylinder group structures | |
1275 | */ | |
bc98a42c | 1276 | if (!sb_rdonly(sb)) |
1da177e4 LT |
1277 | if (!ufs_read_cylinder_structures(sb)) |
1278 | goto failed; | |
1279 | ||
abf5d15f | 1280 | UFSD("EXIT\n"); |
1da177e4 LT |
1281 | return 0; |
1282 | ||
1da177e4 | 1283 | failed: |
f99d49ad JJ |
1284 | if (ubh) |
1285 | ubh_brelse_uspi (uspi); | |
1286 | kfree (uspi); | |
1287 | kfree(sbi); | |
1da177e4 | 1288 | sb->s_fs_info = NULL; |
abf5d15f | 1289 | UFSD("EXIT (FAILED)\n"); |
b55c460d | 1290 | return ret; |
1da177e4 LT |
1291 | |
1292 | failed_nomem: | |
abf5d15f | 1293 | UFSD("EXIT (NOMEM)\n"); |
1da177e4 LT |
1294 | return -ENOMEM; |
1295 | } | |
1296 | ||
1da177e4 LT |
1297 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) |
1298 | { | |
1299 | struct ufs_sb_private_info * uspi; | |
1300 | struct ufs_super_block_first * usb1; | |
1301 | struct ufs_super_block_third * usb3; | |
1302 | unsigned new_mount_opt, ufstype; | |
1303 | unsigned flags; | |
337eb00a | 1304 | |
02b9984d | 1305 | sync_filesystem(sb); |
cdd9eefd | 1306 | mutex_lock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1307 | uspi = UFS_SB(sb)->s_uspi; |
1308 | flags = UFS_SB(sb)->s_flags; | |
7b4ee73e E |
1309 | usb1 = ubh_get_usb_first(uspi); |
1310 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1311 | |
1312 | /* | |
1313 | * Allow the "check" option to be passed as a remount option. | |
1314 | * It is not possible to change ufstype option during remount | |
1315 | */ | |
1316 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1317 | new_mount_opt = 0; | |
1318 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
bbd6851a | 1319 | if (!ufs_parse_options (data, &new_mount_opt)) { |
cdd9eefd | 1320 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 | 1321 | return -EINVAL; |
bbd6851a | 1322 | } |
1da177e4 LT |
1323 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { |
1324 | new_mount_opt |= ufstype; | |
ee3ffd6c | 1325 | } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
a9814c5d | 1326 | pr_err("ufstype can't be changed during remount\n"); |
cdd9eefd | 1327 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1328 | return -EINVAL; |
1329 | } | |
1330 | ||
1751e8a6 | 1331 | if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) { |
1da177e4 | 1332 | UFS_SB(sb)->s_mount_opt = new_mount_opt; |
cdd9eefd | 1333 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1334 | return 0; |
1335 | } | |
1336 | ||
1337 | /* | |
1338 | * fs was mouted as rw, remounting ro | |
1339 | */ | |
1751e8a6 | 1340 | if (*mount_flags & SB_RDONLY) { |
ee3ffd6c | 1341 | ufs_put_super_internal(sb); |
1da177e4 LT |
1342 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
1343 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
252e211e | 1344 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1da177e4 LT |
1345 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1346 | ufs_set_fs_state(sb, usb1, usb3, | |
1347 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1348 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1751e8a6 | 1349 | sb->s_flags |= SB_RDONLY; |
ee3ffd6c | 1350 | } else { |
1da177e4 LT |
1351 | /* |
1352 | * fs was mounted as ro, remounting rw | |
1353 | */ | |
1da177e4 | 1354 | #ifndef CONFIG_UFS_FS_WRITE |
a9814c5d | 1355 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); |
cdd9eefd | 1356 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1357 | return -EINVAL; |
1358 | #else | |
1359 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
252e211e | 1360 | ufstype != UFS_MOUNT_UFSTYPE_SUNOS && |
1da177e4 | 1361 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && |
cbcae39f ED |
1362 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && |
1363 | ufstype != UFS_MOUNT_UFSTYPE_UFS2) { | |
a9814c5d | 1364 | pr_err("this ufstype is read-only supported\n"); |
cdd9eefd | 1365 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1366 | return -EINVAL; |
1367 | } | |
ee3ffd6c | 1368 | if (!ufs_read_cylinder_structures(sb)) { |
a9814c5d | 1369 | pr_err("failed during remounting\n"); |
cdd9eefd | 1370 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1371 | return -EPERM; |
1372 | } | |
1751e8a6 | 1373 | sb->s_flags &= ~SB_RDONLY; |
1da177e4 LT |
1374 | #endif |
1375 | } | |
1376 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
cdd9eefd | 1377 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1378 | return 0; |
1379 | } | |
1380 | ||
34c80b1d | 1381 | static int ufs_show_options(struct seq_file *seq, struct dentry *root) |
2a9807c0 | 1382 | { |
34c80b1d | 1383 | struct ufs_sb_info *sbi = UFS_SB(root->d_sb); |
2a9807c0 | 1384 | unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
a447c093 | 1385 | const struct match_token *tp = tokens; |
2a9807c0 ED |
1386 | |
1387 | while (tp->token != Opt_onerror_panic && tp->token != mval) | |
1388 | ++tp; | |
1389 | BUG_ON(tp->token == Opt_onerror_panic); | |
1390 | seq_printf(seq, ",%s", tp->pattern); | |
1391 | ||
1392 | mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR; | |
1393 | while (tp->token != Opt_err && tp->token != mval) | |
1394 | ++tp; | |
1395 | BUG_ON(tp->token == Opt_err); | |
1396 | seq_printf(seq, ",%s", tp->pattern); | |
1397 | ||
1398 | return 0; | |
1399 | } | |
1400 | ||
647b7e87 | 1401 | static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 1402 | { |
726c3342 | 1403 | struct super_block *sb = dentry->d_sb; |
647b7e87 ED |
1404 | struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; |
1405 | unsigned flags = UFS_SB(sb)->s_flags; | |
647b7e87 | 1406 | struct ufs_super_block_third *usb3; |
41d577aa | 1407 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
1da177e4 | 1408 | |
dff7cfd3 | 1409 | mutex_lock(&UFS_SB(sb)->s_lock); |
647b7e87 | 1410 | usb3 = ubh_get_usb_third(uspi); |
1da177e4 | 1411 | |
c596961d | 1412 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1413 | buf->f_type = UFS2_MAGIC; |
c596961d | 1414 | else |
1da177e4 | 1415 | buf->f_type = UFS_MAGIC; |
c596961d AV |
1416 | |
1417 | buf->f_blocks = uspi->s_dsize; | |
1418 | buf->f_bfree = ufs_freefrags(uspi); | |
ee3ffd6c | 1419 | buf->f_ffree = uspi->cs_total.cs_nifree; |
1da177e4 | 1420 | buf->f_bsize = sb->s_blocksize; |
c596961d AV |
1421 | buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks) |
1422 | ? (buf->f_bfree - uspi->s_root_blocks) : 0; | |
1da177e4 LT |
1423 | buf->f_files = uspi->s_ncg * uspi->s_ipg; |
1424 | buf->f_namelen = UFS_MAXNAMLEN; | |
41d577aa CL |
1425 | buf->f_fsid.val[0] = (u32)id; |
1426 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
1da177e4 | 1427 | |
dff7cfd3 | 1428 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1da177e4 LT |
1429 | |
1430 | return 0; | |
1431 | } | |
1432 | ||
e18b890b | 1433 | static struct kmem_cache * ufs_inode_cachep; |
1da177e4 LT |
1434 | |
1435 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1436 | { | |
1437 | struct ufs_inode_info *ei; | |
61da3ae2 FF |
1438 | |
1439 | ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS); | |
1da177e4 LT |
1440 | if (!ei) |
1441 | return NULL; | |
61da3ae2 | 1442 | |
1da177e4 | 1443 | ei->vfs_inode.i_version = 1; |
724bb09f AV |
1444 | seqlock_init(&ei->meta_lock); |
1445 | mutex_init(&ei->truncate_mutex); | |
1da177e4 LT |
1446 | return &ei->vfs_inode; |
1447 | } | |
1448 | ||
fa0d7e3d | 1449 | static void ufs_i_callback(struct rcu_head *head) |
1da177e4 | 1450 | { |
fa0d7e3d | 1451 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
1452 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); |
1453 | } | |
1454 | ||
fa0d7e3d NP |
1455 | static void ufs_destroy_inode(struct inode *inode) |
1456 | { | |
1457 | call_rcu(&inode->i_rcu, ufs_i_callback); | |
1458 | } | |
1459 | ||
51cc5068 | 1460 | static void init_once(void *foo) |
1da177e4 LT |
1461 | { |
1462 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1463 | ||
a35afb83 | 1464 | inode_init_once(&ei->vfs_inode); |
1da177e4 | 1465 | } |
20c2df83 | 1466 | |
76ee4735 | 1467 | static int __init init_inodecache(void) |
1da177e4 LT |
1468 | { |
1469 | ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", | |
1470 | sizeof(struct ufs_inode_info), | |
fffb60f9 | 1471 | 0, (SLAB_RECLAIM_ACCOUNT| |
5d097056 | 1472 | SLAB_MEM_SPREAD|SLAB_ACCOUNT), |
20c2df83 | 1473 | init_once); |
1da177e4 LT |
1474 | if (ufs_inode_cachep == NULL) |
1475 | return -ENOMEM; | |
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | static void destroy_inodecache(void) | |
1480 | { | |
8c0a8537 KS |
1481 | /* |
1482 | * Make sure all delayed rcu free inodes are flushed before we | |
1483 | * destroy cache. | |
1484 | */ | |
1485 | rcu_barrier(); | |
1a1d92c1 | 1486 | kmem_cache_destroy(ufs_inode_cachep); |
1da177e4 LT |
1487 | } |
1488 | ||
ee9b6d61 | 1489 | static const struct super_operations ufs_super_ops = { |
1da177e4 LT |
1490 | .alloc_inode = ufs_alloc_inode, |
1491 | .destroy_inode = ufs_destroy_inode, | |
1da177e4 | 1492 | .write_inode = ufs_write_inode, |
58e8268c | 1493 | .evict_inode = ufs_evict_inode, |
1da177e4 | 1494 | .put_super = ufs_put_super, |
8c800656 | 1495 | .sync_fs = ufs_sync_fs, |
1da177e4 LT |
1496 | .statfs = ufs_statfs, |
1497 | .remount_fs = ufs_remount, | |
2a9807c0 | 1498 | .show_options = ufs_show_options, |
1da177e4 LT |
1499 | }; |
1500 | ||
152a0836 AV |
1501 | static struct dentry *ufs_mount(struct file_system_type *fs_type, |
1502 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1503 | { |
152a0836 | 1504 | return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super); |
1da177e4 LT |
1505 | } |
1506 | ||
1507 | static struct file_system_type ufs_fs_type = { | |
1508 | .owner = THIS_MODULE, | |
1509 | .name = "ufs", | |
152a0836 | 1510 | .mount = ufs_mount, |
1da177e4 LT |
1511 | .kill_sb = kill_block_super, |
1512 | .fs_flags = FS_REQUIRES_DEV, | |
1513 | }; | |
7f78e035 | 1514 | MODULE_ALIAS_FS("ufs"); |
1da177e4 LT |
1515 | |
1516 | static int __init init_ufs_fs(void) | |
1517 | { | |
1518 | int err = init_inodecache(); | |
1519 | if (err) | |
1520 | goto out1; | |
1521 | err = register_filesystem(&ufs_fs_type); | |
1522 | if (err) | |
1523 | goto out; | |
1524 | return 0; | |
1525 | out: | |
1526 | destroy_inodecache(); | |
1527 | out1: | |
1528 | return err; | |
1529 | } | |
1530 | ||
1531 | static void __exit exit_ufs_fs(void) | |
1532 | { | |
1533 | unregister_filesystem(&ufs_fs_type); | |
1534 | destroy_inodecache(); | |
1535 | } | |
1536 | ||
1537 | module_init(init_ufs_fs) | |
1538 | module_exit(exit_ufs_fs) | |
1539 | MODULE_LICENSE("GPL"); |