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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/ufs/super.c | |
3 | * | |
4 | * Copyright (C) 1998 | |
5 | * Daniel Pirkl <daniel.pirkl@email.cz> | |
6 | * Charles University, Faculty of Mathematics and Physics | |
7 | */ | |
8 | ||
9 | /* Derived from | |
10 | * | |
11 | * linux/fs/ext2/super.c | |
12 | * | |
13 | * Copyright (C) 1992, 1993, 1994, 1995 | |
14 | * Remy Card (card@masi.ibp.fr) | |
15 | * Laboratoire MASI - Institut Blaise Pascal | |
16 | * Universite Pierre et Marie Curie (Paris VI) | |
17 | * | |
18 | * from | |
19 | * | |
20 | * linux/fs/minix/inode.c | |
21 | * | |
22 | * Copyright (C) 1991, 1992 Linus Torvalds | |
23 | * | |
24 | * Big-endian to little-endian byte-swapping/bitmaps by | |
25 | * David S. Miller (davem@caip.rutgers.edu), 1995 | |
26 | */ | |
27 | ||
28 | /* | |
29 | * Inspired by | |
30 | * | |
31 | * linux/fs/ufs/super.c | |
32 | * | |
33 | * Copyright (C) 1996 | |
34 | * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) | |
35 | * Laboratory for Computer Science Research Computing Facility | |
36 | * Rutgers, The State University of New Jersey | |
37 | * | |
38 | * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) | |
39 | * | |
40 | * Kernel module support added on 96/04/26 by | |
41 | * Stefan Reinauer <stepan@home.culture.mipt.ru> | |
42 | * | |
43 | * Module usage counts added on 96/04/29 by | |
f762dd68 | 44 | * Gertjan van Wingerde <gwingerde@gmail.com> |
1da177e4 LT |
45 | * |
46 | * Clean swab support on 19970406 by | |
47 | * Francois-Rene Rideau <fare@tunes.org> | |
48 | * | |
49 | * 4.4BSD (FreeBSD) support added on February 1st 1998 by | |
50 | * Niels Kristian Bech Jensen <nkbj@image.dk> partially based | |
51 | * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. | |
52 | * | |
53 | * NeXTstep support added on February 5th 1998 by | |
54 | * Niels Kristian Bech Jensen <nkbj@image.dk>. | |
55 | * | |
56 | * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998 | |
57 | * | |
58 | * HP/UX hfs filesystem support added by | |
59 | * Martin K. Petersen <mkp@mkp.net>, August 1999 | |
60 | * | |
61 | * UFS2 (of FreeBSD 5.x) support added by | |
62 | * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004 | |
63 | * | |
cbcae39f ED |
64 | * UFS2 write support added by |
65 | * Evgeniy Dushistov <dushistov@mail.ru>, 2007 | |
1da177e4 LT |
66 | */ |
67 | ||
68 | ||
f3e2a520 | 69 | #include <linux/exportfs.h> |
1da177e4 LT |
70 | #include <linux/module.h> |
71 | #include <linux/bitops.h> | |
72 | ||
73 | #include <stdarg.h> | |
74 | ||
75 | #include <asm/uaccess.h> | |
76 | #include <asm/system.h> | |
77 | ||
78 | #include <linux/errno.h> | |
79 | #include <linux/fs.h> | |
74abb989 | 80 | #include <linux/quotaops.h> |
1da177e4 LT |
81 | #include <linux/slab.h> |
82 | #include <linux/time.h> | |
83 | #include <linux/stat.h> | |
84 | #include <linux/string.h> | |
85 | #include <linux/blkdev.h> | |
86 | #include <linux/init.h> | |
87 | #include <linux/parser.h> | |
88 | #include <linux/smp_lock.h> | |
89 | #include <linux/buffer_head.h> | |
90 | #include <linux/vfs.h> | |
9e8c4273 | 91 | #include <linux/log2.h> |
2a9807c0 ED |
92 | #include <linux/mount.h> |
93 | #include <linux/seq_file.h> | |
1da177e4 | 94 | |
e5420598 | 95 | #include "ufs_fs.h" |
bcd6d4ec | 96 | #include "ufs.h" |
1da177e4 LT |
97 | #include "swab.h" |
98 | #include "util.h" | |
99 | ||
f3e2a520 AD |
100 | static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) |
101 | { | |
102 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
103 | struct inode *inode; | |
104 | ||
105 | if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg) | |
106 | return ERR_PTR(-ESTALE); | |
107 | ||
108 | inode = ufs_iget(sb, ino); | |
109 | if (IS_ERR(inode)) | |
110 | return ERR_CAST(inode); | |
111 | if (generation && inode->i_generation != generation) { | |
112 | iput(inode); | |
113 | return ERR_PTR(-ESTALE); | |
114 | } | |
115 | return inode; | |
116 | } | |
117 | ||
118 | static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
119 | int fh_len, int fh_type) | |
120 | { | |
121 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
122 | } | |
123 | ||
124 | static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
125 | int fh_len, int fh_type) | |
126 | { | |
127 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); | |
128 | } | |
129 | ||
130 | static struct dentry *ufs_get_parent(struct dentry *child) | |
131 | { | |
132 | struct qstr dot_dot = { | |
133 | .name = "..", | |
134 | .len = 2, | |
135 | }; | |
136 | ino_t ino; | |
137 | ||
138 | ino = ufs_inode_by_name(child->d_inode, &dot_dot); | |
139 | if (!ino) | |
140 | return ERR_PTR(-ENOENT); | |
141 | return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino)); | |
142 | } | |
143 | ||
144 | static const struct export_operations ufs_export_ops = { | |
145 | .fh_to_dentry = ufs_fh_to_dentry, | |
146 | .fh_to_parent = ufs_fh_to_parent, | |
147 | .get_parent = ufs_get_parent, | |
148 | }; | |
149 | ||
abf5d15f | 150 | #ifdef CONFIG_UFS_DEBUG |
1da177e4 LT |
151 | /* |
152 | * Print contents of ufs_super_block, useful for debugging | |
153 | */ | |
3313e292 | 154 | static void ufs_print_super_stuff(struct super_block *sb, |
647b7e87 ED |
155 | struct ufs_super_block_first *usb1, |
156 | struct ufs_super_block_second *usb2, | |
157 | struct ufs_super_block_third *usb3) | |
1da177e4 | 158 | { |
3313e292 ED |
159 | u32 magic = fs32_to_cpu(sb, usb3->fs_magic); |
160 | ||
1da177e4 | 161 | printk("ufs_print_super_stuff\n"); |
3313e292 ED |
162 | printk(" magic: 0x%x\n", magic); |
163 | if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { | |
647b7e87 ED |
164 | printk(" fs_size: %llu\n", (unsigned long long) |
165 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); | |
166 | printk(" fs_dsize: %llu\n", (unsigned long long) | |
167 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); | |
168 | printk(" bsize: %u\n", | |
169 | fs32_to_cpu(sb, usb1->fs_bsize)); | |
170 | printk(" fsize: %u\n", | |
171 | fs32_to_cpu(sb, usb1->fs_fsize)); | |
172 | printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); | |
173 | printk(" fs_sblockloc: %llu\n", (unsigned long long) | |
174 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); | |
175 | printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long) | |
176 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); | |
177 | printk(" cs_nbfree(No of free blocks): %llu\n", | |
178 | (unsigned long long) | |
179 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); | |
3313e292 ED |
180 | printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n", |
181 | (unsigned long long) | |
182 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); | |
183 | printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n", | |
184 | (unsigned long long) | |
185 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); | |
90b315af ED |
186 | printk(KERN_INFO" fs_maxsymlinklen: %u\n", |
187 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); | |
647b7e87 ED |
188 | } else { |
189 | printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); | |
190 | printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); | |
191 | printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); | |
192 | printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); | |
193 | printk(" cgoffset: %u\n", | |
194 | fs32_to_cpu(sb, usb1->fs_cgoffset)); | |
195 | printk(" ~cgmask: 0x%x\n", | |
196 | ~fs32_to_cpu(sb, usb1->fs_cgmask)); | |
197 | printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); | |
198 | printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); | |
199 | printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); | |
200 | printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); | |
201 | printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); | |
202 | printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); | |
203 | printk(" fragshift: %u\n", | |
204 | fs32_to_cpu(sb, usb1->fs_fragshift)); | |
205 | printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); | |
206 | printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); | |
207 | printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); | |
208 | printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); | |
209 | printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); | |
210 | printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); | |
211 | printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); | |
212 | printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); | |
213 | printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); | |
214 | printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); | |
215 | printk(" fstodb: %u\n", | |
216 | fs32_to_cpu(sb, usb1->fs_fsbtodb)); | |
217 | printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); | |
218 | printk(" ndir %u\n", | |
219 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); | |
220 | printk(" nifree %u\n", | |
221 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); | |
222 | printk(" nbfree %u\n", | |
223 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); | |
224 | printk(" nffree %u\n", | |
225 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); | |
226 | } | |
1da177e4 LT |
227 | printk("\n"); |
228 | } | |
229 | ||
230 | /* | |
231 | * Print contents of ufs_cylinder_group, useful for debugging | |
232 | */ | |
647b7e87 ED |
233 | static void ufs_print_cylinder_stuff(struct super_block *sb, |
234 | struct ufs_cylinder_group *cg) | |
1da177e4 LT |
235 | { |
236 | printk("\nufs_print_cylinder_stuff\n"); | |
96710b29 | 237 | printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); |
1da177e4 LT |
238 | printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); |
239 | printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); | |
240 | printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); | |
241 | printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); | |
242 | printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); | |
243 | printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); | |
244 | printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); | |
245 | printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); | |
246 | printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); | |
247 | printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); | |
248 | printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); | |
249 | printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); | |
250 | printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); | |
251 | printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", | |
252 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), | |
253 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), | |
254 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), | |
255 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); | |
256 | printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); | |
257 | printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); | |
258 | printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); | |
259 | printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); | |
260 | printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); | |
647b7e87 ED |
261 | printk(" clustersumoff %u\n", |
262 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); | |
263 | printk(" clusteroff %u\n", | |
264 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); | |
265 | printk(" nclusterblks %u\n", | |
266 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); | |
1da177e4 LT |
267 | printk("\n"); |
268 | } | |
647b7e87 | 269 | #else |
3313e292 | 270 | # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
647b7e87 | 271 | # define ufs_print_cylinder_stuff(sb, cg) /**/ |
abf5d15f | 272 | #endif /* CONFIG_UFS_DEBUG */ |
1da177e4 | 273 | |
ee9b6d61 | 274 | static const struct super_operations ufs_super_ops; |
1da177e4 LT |
275 | |
276 | static char error_buf[1024]; | |
277 | ||
278 | void ufs_error (struct super_block * sb, const char * function, | |
279 | const char * fmt, ...) | |
280 | { | |
281 | struct ufs_sb_private_info * uspi; | |
282 | struct ufs_super_block_first * usb1; | |
283 | va_list args; | |
284 | ||
285 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e | 286 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
287 | |
288 | if (!(sb->s_flags & MS_RDONLY)) { | |
289 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 290 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
1da177e4 LT |
291 | sb->s_dirt = 1; |
292 | sb->s_flags |= MS_RDONLY; | |
293 | } | |
294 | va_start (args, fmt); | |
4a6e617a | 295 | vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
1da177e4 LT |
296 | va_end (args); |
297 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { | |
298 | case UFS_MOUNT_ONERROR_PANIC: | |
299 | panic ("UFS-fs panic (device %s): %s: %s\n", | |
300 | sb->s_id, function, error_buf); | |
301 | ||
302 | case UFS_MOUNT_ONERROR_LOCK: | |
303 | case UFS_MOUNT_ONERROR_UMOUNT: | |
304 | case UFS_MOUNT_ONERROR_REPAIR: | |
305 | printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", | |
306 | sb->s_id, function, error_buf); | |
307 | } | |
308 | } | |
309 | ||
310 | void ufs_panic (struct super_block * sb, const char * function, | |
311 | const char * fmt, ...) | |
312 | { | |
313 | struct ufs_sb_private_info * uspi; | |
314 | struct ufs_super_block_first * usb1; | |
315 | va_list args; | |
316 | ||
337eb00a | 317 | lock_kernel(); |
1da177e4 | 318 | uspi = UFS_SB(sb)->s_uspi; |
7b4ee73e | 319 | usb1 = ubh_get_usb_first(uspi); |
1da177e4 LT |
320 | |
321 | if (!(sb->s_flags & MS_RDONLY)) { | |
322 | usb1->fs_clean = UFS_FSBAD; | |
9695ef16 | 323 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
1da177e4 LT |
324 | sb->s_dirt = 1; |
325 | } | |
326 | va_start (args, fmt); | |
4a6e617a | 327 | vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
1da177e4 LT |
328 | va_end (args); |
329 | sb->s_flags |= MS_RDONLY; | |
330 | printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", | |
331 | sb->s_id, function, error_buf); | |
332 | } | |
333 | ||
334 | void ufs_warning (struct super_block * sb, const char * function, | |
335 | const char * fmt, ...) | |
336 | { | |
337 | va_list args; | |
338 | ||
339 | va_start (args, fmt); | |
4a6e617a | 340 | vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
1da177e4 LT |
341 | va_end (args); |
342 | printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", | |
343 | sb->s_id, function, error_buf); | |
344 | } | |
345 | ||
346 | enum { | |
2a9807c0 ED |
347 | Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
348 | Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, | |
349 | Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, | |
350 | Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, | |
351 | Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, | |
352 | Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, | |
353 | Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, | |
354 | Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, | |
355 | Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, | |
356 | Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, | |
357 | Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, | |
358 | Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, | |
359 | Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, | |
360 | Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, | |
361 | Opt_err | |
1da177e4 LT |
362 | }; |
363 | ||
a447c093 | 364 | static const match_table_t tokens = { |
1da177e4 LT |
365 | {Opt_type_old, "ufstype=old"}, |
366 | {Opt_type_sunx86, "ufstype=sunx86"}, | |
367 | {Opt_type_sun, "ufstype=sun"}, | |
252e211e | 368 | {Opt_type_sunos, "ufstype=sunos"}, |
1da177e4 LT |
369 | {Opt_type_44bsd, "ufstype=44bsd"}, |
370 | {Opt_type_ufs2, "ufstype=ufs2"}, | |
371 | {Opt_type_ufs2, "ufstype=5xbsd"}, | |
372 | {Opt_type_hp, "ufstype=hp"}, | |
373 | {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, | |
374 | {Opt_type_nextstep, "ufstype=nextstep"}, | |
375 | {Opt_type_openstep, "ufstype=openstep"}, | |
2a9807c0 | 376 | /*end of possible ufs types */ |
1da177e4 LT |
377 | {Opt_onerror_panic, "onerror=panic"}, |
378 | {Opt_onerror_lock, "onerror=lock"}, | |
379 | {Opt_onerror_umount, "onerror=umount"}, | |
380 | {Opt_onerror_repair, "onerror=repair"}, | |
381 | {Opt_err, NULL} | |
382 | }; | |
383 | ||
384 | static int ufs_parse_options (char * options, unsigned * mount_options) | |
385 | { | |
386 | char * p; | |
387 | ||
abf5d15f | 388 | UFSD("ENTER\n"); |
1da177e4 LT |
389 | |
390 | if (!options) | |
391 | return 1; | |
392 | ||
393 | while ((p = strsep(&options, ",")) != NULL) { | |
394 | substring_t args[MAX_OPT_ARGS]; | |
395 | int token; | |
396 | if (!*p) | |
397 | continue; | |
398 | ||
399 | token = match_token(p, tokens, args); | |
400 | switch (token) { | |
401 | case Opt_type_old: | |
402 | ufs_clear_opt (*mount_options, UFSTYPE); | |
403 | ufs_set_opt (*mount_options, UFSTYPE_OLD); | |
404 | break; | |
405 | case Opt_type_sunx86: | |
406 | ufs_clear_opt (*mount_options, UFSTYPE); | |
407 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); | |
408 | break; | |
409 | case Opt_type_sun: | |
410 | ufs_clear_opt (*mount_options, UFSTYPE); | |
411 | ufs_set_opt (*mount_options, UFSTYPE_SUN); | |
412 | break; | |
252e211e MF |
413 | case Opt_type_sunos: |
414 | ufs_clear_opt(*mount_options, UFSTYPE); | |
415 | ufs_set_opt(*mount_options, UFSTYPE_SUNOS); | |
416 | break; | |
1da177e4 LT |
417 | case Opt_type_44bsd: |
418 | ufs_clear_opt (*mount_options, UFSTYPE); | |
419 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); | |
420 | break; | |
421 | case Opt_type_ufs2: | |
422 | ufs_clear_opt(*mount_options, UFSTYPE); | |
423 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); | |
424 | break; | |
425 | case Opt_type_hp: | |
426 | ufs_clear_opt (*mount_options, UFSTYPE); | |
427 | ufs_set_opt (*mount_options, UFSTYPE_HP); | |
428 | break; | |
429 | case Opt_type_nextstepcd: | |
430 | ufs_clear_opt (*mount_options, UFSTYPE); | |
431 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); | |
432 | break; | |
433 | case Opt_type_nextstep: | |
434 | ufs_clear_opt (*mount_options, UFSTYPE); | |
435 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); | |
436 | break; | |
437 | case Opt_type_openstep: | |
438 | ufs_clear_opt (*mount_options, UFSTYPE); | |
439 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); | |
440 | break; | |
441 | case Opt_onerror_panic: | |
442 | ufs_clear_opt (*mount_options, ONERROR); | |
443 | ufs_set_opt (*mount_options, ONERROR_PANIC); | |
444 | break; | |
445 | case Opt_onerror_lock: | |
446 | ufs_clear_opt (*mount_options, ONERROR); | |
447 | ufs_set_opt (*mount_options, ONERROR_LOCK); | |
448 | break; | |
449 | case Opt_onerror_umount: | |
450 | ufs_clear_opt (*mount_options, ONERROR); | |
451 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); | |
452 | break; | |
453 | case Opt_onerror_repair: | |
454 | printk("UFS-fs: Unable to do repair on error, " | |
455 | "will lock lock instead\n"); | |
456 | ufs_clear_opt (*mount_options, ONERROR); | |
457 | ufs_set_opt (*mount_options, ONERROR_REPAIR); | |
458 | break; | |
459 | default: | |
460 | printk("UFS-fs: Invalid option: \"%s\" " | |
461 | "or missing value\n", p); | |
462 | return 0; | |
463 | } | |
464 | } | |
465 | return 1; | |
466 | } | |
467 | ||
468 | /* | |
ee3ffd6c ED |
469 | * Diffrent types of UFS hold fs_cstotal in different |
470 | * places, and use diffrent data structure for it. | |
471 | * To make things simplier we just copy fs_cstotal to ufs_sb_private_info | |
1da177e4 | 472 | */ |
ee3ffd6c | 473 | static void ufs_setup_cstotal(struct super_block *sb) |
e295cfcb | 474 | { |
647b7e87 ED |
475 | struct ufs_sb_info *sbi = UFS_SB(sb); |
476 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
ee3ffd6c ED |
477 | struct ufs_super_block_first *usb1; |
478 | struct ufs_super_block_second *usb2; | |
647b7e87 | 479 | struct ufs_super_block_third *usb3; |
ee3ffd6c ED |
480 | unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
481 | ||
482 | UFSD("ENTER, mtype=%u\n", mtype); | |
483 | usb1 = ubh_get_usb_first(uspi); | |
484 | usb2 = ubh_get_usb_second(uspi); | |
485 | usb3 = ubh_get_usb_third(uspi); | |
486 | ||
487 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
488 | (usb1->fs_flags & UFS_FLAGS_UPDATED)) || | |
489 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { | |
490 | /*we have statistic in different place, then usual*/ | |
491 | uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); | |
492 | uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); | |
493 | uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); | |
494 | uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); | |
495 | } else { | |
496 | uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); | |
497 | uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); | |
498 | uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); | |
499 | uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); | |
500 | } | |
501 | UFSD("EXIT\n"); | |
502 | } | |
503 | ||
504 | /* | |
505 | * Read on-disk structures associated with cylinder groups | |
506 | */ | |
507 | static int ufs_read_cylinder_structures(struct super_block *sb) | |
508 | { | |
509 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
510 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
511 | struct ufs_buffer_head * ubh; |
512 | unsigned char * base, * space; | |
513 | unsigned size, blks, i; | |
ee3ffd6c ED |
514 | struct ufs_super_block_third *usb3; |
515 | ||
abf5d15f | 516 | UFSD("ENTER\n"); |
1da177e4 | 517 | |
ee3ffd6c | 518 | usb3 = ubh_get_usb_third(uspi); |
1da177e4 LT |
519 | /* |
520 | * Read cs structures from (usually) first data block | |
521 | * on the device. | |
522 | */ | |
523 | size = uspi->s_cssize; | |
524 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
525 | base = space = kmalloc(size, GFP_KERNEL); | |
526 | if (!base) | |
527 | goto failed; | |
e295cfcb | 528 | sbi->s_csp = (struct ufs_csum *)space; |
1da177e4 LT |
529 | for (i = 0; i < blks; i += uspi->s_fpb) { |
530 | size = uspi->s_bsize; | |
531 | if (i + uspi->s_fpb > blks) | |
532 | size = (blks - i) * uspi->s_fsize; | |
533 | ||
3313e292 | 534 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
7b4ee73e E |
535 | |
536 | if (!ubh) | |
537 | goto failed; | |
538 | ||
539 | ubh_ubhcpymem (space, ubh, size); | |
7b4ee73e | 540 | |
1da177e4 LT |
541 | space += size; |
542 | ubh_brelse (ubh); | |
543 | ubh = NULL; | |
544 | } | |
545 | ||
546 | /* | |
547 | * Read cylinder group (we read only first fragment from block | |
548 | * at this time) and prepare internal data structures for cg caching. | |
549 | */ | |
550 | if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) | |
551 | goto failed; | |
552 | for (i = 0; i < uspi->s_ncg; i++) | |
553 | sbi->s_ucg[i] = NULL; | |
554 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
555 | sbi->s_ucpi[i] = NULL; | |
556 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
557 | } | |
558 | for (i = 0; i < uspi->s_ncg; i++) { | |
abf5d15f | 559 | UFSD("read cg %u\n", i); |
1da177e4 LT |
560 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
561 | goto failed; | |
562 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) | |
563 | goto failed; | |
647b7e87 | 564 | |
1da177e4 | 565 | ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
1da177e4 LT |
566 | } |
567 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { | |
568 | if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) | |
569 | goto failed; | |
570 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; | |
571 | } | |
572 | sbi->s_cg_loaded = 0; | |
abf5d15f | 573 | UFSD("EXIT\n"); |
1da177e4 LT |
574 | return 1; |
575 | ||
576 | failed: | |
f99d49ad | 577 | kfree (base); |
1da177e4 LT |
578 | if (sbi->s_ucg) { |
579 | for (i = 0; i < uspi->s_ncg; i++) | |
f99d49ad JJ |
580 | if (sbi->s_ucg[i]) |
581 | brelse (sbi->s_ucg[i]); | |
1da177e4 LT |
582 | kfree (sbi->s_ucg); |
583 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) | |
f99d49ad | 584 | kfree (sbi->s_ucpi[i]); |
1da177e4 | 585 | } |
abf5d15f | 586 | UFSD("EXIT (FAILED)\n"); |
1da177e4 LT |
587 | return 0; |
588 | } | |
589 | ||
590 | /* | |
ee3ffd6c | 591 | * Sync our internal copy of fs_cstotal with disk |
1da177e4 | 592 | */ |
ee3ffd6c | 593 | static void ufs_put_cstotal(struct super_block *sb) |
e295cfcb | 594 | { |
ee3ffd6c ED |
595 | unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
596 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
597 | struct ufs_super_block_first *usb1; | |
598 | struct ufs_super_block_second *usb2; | |
599 | struct ufs_super_block_third *usb3; | |
600 | ||
601 | UFSD("ENTER\n"); | |
602 | usb1 = ubh_get_usb_first(uspi); | |
603 | usb2 = ubh_get_usb_second(uspi); | |
604 | usb3 = ubh_get_usb_third(uspi); | |
605 | ||
606 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && | |
607 | (usb1->fs_flags & UFS_FLAGS_UPDATED)) || | |
608 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { | |
609 | /*we have statistic in different place, then usual*/ | |
610 | usb2->fs_un.fs_u2.cs_ndir = | |
611 | cpu_to_fs64(sb, uspi->cs_total.cs_ndir); | |
612 | usb2->fs_un.fs_u2.cs_nbfree = | |
613 | cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); | |
614 | usb3->fs_un1.fs_u2.cs_nifree = | |
615 | cpu_to_fs64(sb, uspi->cs_total.cs_nifree); | |
616 | usb3->fs_un1.fs_u2.cs_nffree = | |
617 | cpu_to_fs64(sb, uspi->cs_total.cs_nffree); | |
618 | } else { | |
619 | usb1->fs_cstotal.cs_ndir = | |
620 | cpu_to_fs32(sb, uspi->cs_total.cs_ndir); | |
621 | usb1->fs_cstotal.cs_nbfree = | |
622 | cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); | |
623 | usb1->fs_cstotal.cs_nifree = | |
624 | cpu_to_fs32(sb, uspi->cs_total.cs_nifree); | |
625 | usb1->fs_cstotal.cs_nffree = | |
626 | cpu_to_fs32(sb, uspi->cs_total.cs_nffree); | |
627 | } | |
628 | ubh_mark_buffer_dirty(USPI_UBH(uspi)); | |
3313e292 | 629 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
ee3ffd6c ED |
630 | UFSD("EXIT\n"); |
631 | } | |
632 | ||
633 | /** | |
634 | * ufs_put_super_internal() - put on-disk intrenal structures | |
635 | * @sb: pointer to super_block structure | |
636 | * Put on-disk structures associated with cylinder groups | |
637 | * and write them back to disk, also update cs_total on disk | |
638 | */ | |
639 | static void ufs_put_super_internal(struct super_block *sb) | |
640 | { | |
641 | struct ufs_sb_info *sbi = UFS_SB(sb); | |
642 | struct ufs_sb_private_info *uspi = sbi->s_uspi; | |
1da177e4 LT |
643 | struct ufs_buffer_head * ubh; |
644 | unsigned char * base, * space; | |
645 | unsigned blks, size, i; | |
ee3ffd6c | 646 | |
1da177e4 | 647 | |
abf5d15f | 648 | UFSD("ENTER\n"); |
6cfd0148 CH |
649 | |
650 | lock_kernel(); | |
651 | ||
ee3ffd6c | 652 | ufs_put_cstotal(sb); |
1da177e4 LT |
653 | size = uspi->s_cssize; |
654 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
e295cfcb | 655 | base = space = (char*) sbi->s_csp; |
1da177e4 LT |
656 | for (i = 0; i < blks; i += uspi->s_fpb) { |
657 | size = uspi->s_bsize; | |
658 | if (i + uspi->s_fpb > blks) | |
659 | size = (blks - i) * uspi->s_fsize; | |
3313e292 | 660 | |
1da177e4 | 661 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
3313e292 | 662 | |
1da177e4 LT |
663 | ubh_memcpyubh (ubh, space, size); |
664 | space += size; | |
665 | ubh_mark_buffer_uptodate (ubh, 1); | |
666 | ubh_mark_buffer_dirty (ubh); | |
667 | ubh_brelse (ubh); | |
668 | } | |
669 | for (i = 0; i < sbi->s_cg_loaded; i++) { | |
670 | ufs_put_cylinder (sb, i); | |
671 | kfree (sbi->s_ucpi[i]); | |
672 | } | |
673 | for (; i < UFS_MAX_GROUP_LOADED; i++) | |
674 | kfree (sbi->s_ucpi[i]); | |
675 | for (i = 0; i < uspi->s_ncg; i++) | |
676 | brelse (sbi->s_ucg[i]); | |
677 | kfree (sbi->s_ucg); | |
678 | kfree (base); | |
6cfd0148 CH |
679 | |
680 | unlock_kernel(); | |
681 | ||
abf5d15f | 682 | UFSD("EXIT\n"); |
1da177e4 LT |
683 | } |
684 | ||
685 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) | |
686 | { | |
687 | struct ufs_sb_info * sbi; | |
688 | struct ufs_sb_private_info * uspi; | |
689 | struct ufs_super_block_first * usb1; | |
690 | struct ufs_super_block_second * usb2; | |
691 | struct ufs_super_block_third * usb3; | |
1da177e4 LT |
692 | struct ufs_buffer_head * ubh; |
693 | struct inode *inode; | |
694 | unsigned block_size, super_block_size; | |
695 | unsigned flags; | |
7b4ee73e | 696 | unsigned super_block_offset; |
9e6766cc | 697 | unsigned maxsymlen; |
b55c460d | 698 | int ret = -EINVAL; |
1da177e4 LT |
699 | |
700 | uspi = NULL; | |
701 | ubh = NULL; | |
702 | flags = 0; | |
703 | ||
abf5d15f | 704 | UFSD("ENTER\n"); |
1da177e4 | 705 | |
f8314dc6 | 706 | sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); |
1da177e4 LT |
707 | if (!sbi) |
708 | goto failed_nomem; | |
709 | sb->s_fs_info = sbi; | |
1da177e4 | 710 | |
abf5d15f | 711 | UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); |
1da177e4 LT |
712 | |
713 | #ifndef CONFIG_UFS_FS_WRITE | |
714 | if (!(sb->s_flags & MS_RDONLY)) { | |
715 | printk("ufs was compiled with read-only support, " | |
716 | "can't be mounted as read-write\n"); | |
717 | goto failed; | |
718 | } | |
719 | #endif | |
720 | /* | |
721 | * Set default mount options | |
722 | * Parse mount options | |
723 | */ | |
724 | sbi->s_mount_opt = 0; | |
725 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); | |
726 | if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { | |
727 | printk("wrong mount options\n"); | |
728 | goto failed; | |
729 | } | |
730 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { | |
731 | if (!silent) | |
732 | printk("You didn't specify the type of your ufs filesystem\n\n" | |
733 | "mount -t ufs -o ufstype=" | |
c690a722 | 734 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
1da177e4 LT |
735 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
736 | "default is ufstype=old\n"); | |
737 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); | |
738 | } | |
739 | ||
252e211e MF |
740 | uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL); |
741 | sbi->s_uspi = uspi; | |
1da177e4 LT |
742 | if (!uspi) |
743 | goto failed; | |
f336953b | 744 | uspi->s_dirblksize = UFS_SECTOR_SIZE; |
7b4ee73e E |
745 | super_block_offset=UFS_SBLOCK; |
746 | ||
1da177e4 LT |
747 | /* Keep 2Gig file limit. Some UFS variants need to override |
748 | this but as I don't know which I'll let those in the know loosen | |
749 | the rules */ | |
1da177e4 LT |
750 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
751 | case UFS_MOUNT_UFSTYPE_44BSD: | |
abf5d15f | 752 | UFSD("ufstype=44bsd\n"); |
1da177e4 LT |
753 | uspi->s_fsize = block_size = 512; |
754 | uspi->s_fmask = ~(512 - 1); | |
755 | uspi->s_fshift = 9; | |
756 | uspi->s_sbsize = super_block_size = 1536; | |
757 | uspi->s_sbbase = 0; | |
758 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
759 | break; | |
760 | case UFS_MOUNT_UFSTYPE_UFS2: | |
abf5d15f | 761 | UFSD("ufstype=ufs2\n"); |
7b4ee73e | 762 | super_block_offset=SBLOCK_UFS2; |
1da177e4 LT |
763 | uspi->s_fsize = block_size = 512; |
764 | uspi->s_fmask = ~(512 - 1); | |
765 | uspi->s_fshift = 9; | |
766 | uspi->s_sbsize = super_block_size = 1536; | |
767 | uspi->s_sbbase = 0; | |
768 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; | |
1da177e4 LT |
769 | break; |
770 | ||
771 | case UFS_MOUNT_UFSTYPE_SUN: | |
abf5d15f | 772 | UFSD("ufstype=sun\n"); |
1da177e4 LT |
773 | uspi->s_fsize = block_size = 1024; |
774 | uspi->s_fmask = ~(1024 - 1); | |
775 | uspi->s_fshift = 10; | |
776 | uspi->s_sbsize = super_block_size = 2048; | |
777 | uspi->s_sbbase = 0; | |
252e211e | 778 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
779 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; |
780 | break; | |
781 | ||
252e211e MF |
782 | case UFS_MOUNT_UFSTYPE_SUNOS: |
783 | UFSD(("ufstype=sunos\n")) | |
784 | uspi->s_fsize = block_size = 1024; | |
785 | uspi->s_fmask = ~(1024 - 1); | |
786 | uspi->s_fshift = 10; | |
787 | uspi->s_sbsize = 2048; | |
788 | super_block_size = 2048; | |
789 | uspi->s_sbbase = 0; | |
790 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ | |
791 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; | |
792 | break; | |
793 | ||
1da177e4 | 794 | case UFS_MOUNT_UFSTYPE_SUNx86: |
abf5d15f | 795 | UFSD("ufstype=sunx86\n"); |
1da177e4 LT |
796 | uspi->s_fsize = block_size = 1024; |
797 | uspi->s_fmask = ~(1024 - 1); | |
798 | uspi->s_fshift = 10; | |
799 | uspi->s_sbsize = super_block_size = 2048; | |
800 | uspi->s_sbbase = 0; | |
252e211e | 801 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
1da177e4 LT |
802 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; |
803 | break; | |
804 | ||
805 | case UFS_MOUNT_UFSTYPE_OLD: | |
abf5d15f | 806 | UFSD("ufstype=old\n"); |
1da177e4 LT |
807 | uspi->s_fsize = block_size = 1024; |
808 | uspi->s_fmask = ~(1024 - 1); | |
809 | uspi->s_fshift = 10; | |
810 | uspi->s_sbsize = super_block_size = 2048; | |
811 | uspi->s_sbbase = 0; | |
812 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
813 | if (!(sb->s_flags & MS_RDONLY)) { | |
814 | if (!silent) | |
815 | printk(KERN_INFO "ufstype=old is supported read-only\n"); | |
816 | sb->s_flags |= MS_RDONLY; | |
817 | } | |
818 | break; | |
819 | ||
820 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: | |
abf5d15f | 821 | UFSD("ufstype=nextstep\n"); |
1da177e4 LT |
822 | uspi->s_fsize = block_size = 1024; |
823 | uspi->s_fmask = ~(1024 - 1); | |
824 | uspi->s_fshift = 10; | |
825 | uspi->s_sbsize = super_block_size = 2048; | |
826 | uspi->s_sbbase = 0; | |
0c664f97 | 827 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
828 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
829 | if (!(sb->s_flags & MS_RDONLY)) { | |
830 | if (!silent) | |
831 | printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); | |
832 | sb->s_flags |= MS_RDONLY; | |
833 | } | |
834 | break; | |
835 | ||
836 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: | |
abf5d15f | 837 | UFSD("ufstype=nextstep-cd\n"); |
1da177e4 LT |
838 | uspi->s_fsize = block_size = 2048; |
839 | uspi->s_fmask = ~(2048 - 1); | |
840 | uspi->s_fshift = 11; | |
841 | uspi->s_sbsize = super_block_size = 2048; | |
842 | uspi->s_sbbase = 0; | |
0c664f97 | 843 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
844 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
845 | if (!(sb->s_flags & MS_RDONLY)) { | |
846 | if (!silent) | |
847 | printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); | |
848 | sb->s_flags |= MS_RDONLY; | |
849 | } | |
850 | break; | |
851 | ||
852 | case UFS_MOUNT_UFSTYPE_OPENSTEP: | |
abf5d15f | 853 | UFSD("ufstype=openstep\n"); |
1da177e4 LT |
854 | uspi->s_fsize = block_size = 1024; |
855 | uspi->s_fmask = ~(1024 - 1); | |
856 | uspi->s_fshift = 10; | |
857 | uspi->s_sbsize = super_block_size = 2048; | |
858 | uspi->s_sbbase = 0; | |
f336953b | 859 | uspi->s_dirblksize = 1024; |
1da177e4 LT |
860 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
861 | if (!(sb->s_flags & MS_RDONLY)) { | |
862 | if (!silent) | |
863 | printk(KERN_INFO "ufstype=openstep is supported read-only\n"); | |
864 | sb->s_flags |= MS_RDONLY; | |
865 | } | |
866 | break; | |
867 | ||
868 | case UFS_MOUNT_UFSTYPE_HP: | |
abf5d15f | 869 | UFSD("ufstype=hp\n"); |
1da177e4 LT |
870 | uspi->s_fsize = block_size = 1024; |
871 | uspi->s_fmask = ~(1024 - 1); | |
872 | uspi->s_fshift = 10; | |
873 | uspi->s_sbsize = super_block_size = 2048; | |
874 | uspi->s_sbbase = 0; | |
875 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; | |
876 | if (!(sb->s_flags & MS_RDONLY)) { | |
877 | if (!silent) | |
878 | printk(KERN_INFO "ufstype=hp is supported read-only\n"); | |
879 | sb->s_flags |= MS_RDONLY; | |
880 | } | |
881 | break; | |
882 | default: | |
883 | if (!silent) | |
884 | printk("unknown ufstype\n"); | |
885 | goto failed; | |
886 | } | |
887 | ||
888 | again: | |
889 | if (!sb_set_blocksize(sb, block_size)) { | |
890 | printk(KERN_ERR "UFS: failed to set blocksize\n"); | |
891 | goto failed; | |
892 | } | |
893 | ||
894 | /* | |
895 | * read ufs super block from device | |
896 | */ | |
7b4ee73e E |
897 | |
898 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); | |
899 | ||
1da177e4 LT |
900 | if (!ubh) |
901 | goto failed; | |
902 | ||
7b4ee73e E |
903 | usb1 = ubh_get_usb_first(uspi); |
904 | usb2 = ubh_get_usb_second(uspi); | |
905 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 906 | |
252e211e MF |
907 | /* Sort out mod used on SunOS 4.1.3 for fs_state */ |
908 | uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); | |
909 | if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && | |
910 | (uspi->s_postblformat != UFS_42POSTBLFMT)) { | |
911 | flags &= ~UFS_ST_MASK; | |
912 | flags |= UFS_ST_SUN; | |
913 | } | |
914 | ||
1da177e4 LT |
915 | /* |
916 | * Check ufs magic number | |
917 | */ | |
918 | sbi->s_bytesex = BYTESEX_LE; | |
919 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
920 | case UFS_MAGIC: | |
921 | case UFS2_MAGIC: | |
922 | case UFS_MAGIC_LFN: | |
923 | case UFS_MAGIC_FEA: | |
924 | case UFS_MAGIC_4GB: | |
925 | goto magic_found; | |
926 | } | |
927 | sbi->s_bytesex = BYTESEX_BE; | |
928 | switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { | |
929 | case UFS_MAGIC: | |
930 | case UFS2_MAGIC: | |
931 | case UFS_MAGIC_LFN: | |
932 | case UFS_MAGIC_FEA: | |
933 | case UFS_MAGIC_4GB: | |
934 | goto magic_found; | |
935 | } | |
936 | ||
937 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) | |
938 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) | |
939 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) | |
940 | && uspi->s_sbbase < 256) { | |
941 | ubh_brelse_uspi(uspi); | |
942 | ubh = NULL; | |
943 | uspi->s_sbbase += 8; | |
944 | goto again; | |
945 | } | |
946 | if (!silent) | |
947 | printk("ufs_read_super: bad magic number\n"); | |
948 | goto failed; | |
949 | ||
950 | magic_found: | |
951 | /* | |
952 | * Check block and fragment sizes | |
953 | */ | |
954 | uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); | |
955 | uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); | |
956 | uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); | |
957 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
958 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
959 | ||
9e8c4273 | 960 | if (!is_power_of_2(uspi->s_fsize)) { |
1da177e4 LT |
961 | printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", |
962 | uspi->s_fsize); | |
963 | goto failed; | |
964 | } | |
965 | if (uspi->s_fsize < 512) { | |
966 | printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", | |
967 | uspi->s_fsize); | |
968 | goto failed; | |
969 | } | |
970 | if (uspi->s_fsize > 4096) { | |
971 | printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", | |
972 | uspi->s_fsize); | |
973 | goto failed; | |
974 | } | |
9e8c4273 | 975 | if (!is_power_of_2(uspi->s_bsize)) { |
1da177e4 LT |
976 | printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", |
977 | uspi->s_bsize); | |
978 | goto failed; | |
979 | } | |
980 | if (uspi->s_bsize < 4096) { | |
981 | printk(KERN_ERR "ufs_read_super: block size %u is too small\n", | |
982 | uspi->s_bsize); | |
983 | goto failed; | |
984 | } | |
985 | if (uspi->s_bsize / uspi->s_fsize > 8) { | |
986 | printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", | |
987 | uspi->s_bsize / uspi->s_fsize); | |
988 | goto failed; | |
989 | } | |
990 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { | |
991 | ubh_brelse_uspi(uspi); | |
992 | ubh = NULL; | |
993 | block_size = uspi->s_fsize; | |
994 | super_block_size = uspi->s_sbsize; | |
abf5d15f | 995 | UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
1da177e4 LT |
996 | goto again; |
997 | } | |
998 | ||
f664f1f9 | 999 | sbi->s_flags = flags;/*after that line some functions use s_flags*/ |
3313e292 | 1000 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
1da177e4 LT |
1001 | |
1002 | /* | |
1003 | * Check, if file system was correctly unmounted. | |
1004 | * If not, make it read only. | |
1005 | */ | |
f664f1f9 AM |
1006 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || |
1007 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || | |
1008 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
1009 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
1010 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && | |
1011 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { | |
1da177e4 LT |
1012 | switch(usb1->fs_clean) { |
1013 | case UFS_FSCLEAN: | |
abf5d15f | 1014 | UFSD("fs is clean\n"); |
1da177e4 LT |
1015 | break; |
1016 | case UFS_FSSTABLE: | |
abf5d15f | 1017 | UFSD("fs is stable\n"); |
1da177e4 LT |
1018 | break; |
1019 | case UFS_FSOSF1: | |
abf5d15f | 1020 | UFSD("fs is DEC OSF/1\n"); |
1da177e4 LT |
1021 | break; |
1022 | case UFS_FSACTIVE: | |
1023 | printk("ufs_read_super: fs is active\n"); | |
1024 | sb->s_flags |= MS_RDONLY; | |
1025 | break; | |
1026 | case UFS_FSBAD: | |
1027 | printk("ufs_read_super: fs is bad\n"); | |
1028 | sb->s_flags |= MS_RDONLY; | |
1029 | break; | |
1030 | default: | |
1031 | printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); | |
1032 | sb->s_flags |= MS_RDONLY; | |
1033 | break; | |
1034 | } | |
ee3ffd6c | 1035 | } else { |
1da177e4 LT |
1036 | printk("ufs_read_super: fs needs fsck\n"); |
1037 | sb->s_flags |= MS_RDONLY; | |
1038 | } | |
1039 | ||
1040 | /* | |
1041 | * Read ufs_super_block into internal data structures | |
1042 | */ | |
1043 | sb->s_op = &ufs_super_ops; | |
f3e2a520 | 1044 | sb->s_export_op = &ufs_export_ops; |
1da177e4 LT |
1045 | sb->dq_op = NULL; /***/ |
1046 | sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); | |
1047 | ||
1048 | uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); | |
1049 | uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); | |
1050 | uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); | |
1051 | uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); | |
1052 | uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); | |
1053 | uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); | |
1054 | ||
1055 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
647b7e87 ED |
1056 | uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); |
1057 | uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); | |
1058 | } else { | |
1da177e4 LT |
1059 | uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); |
1060 | uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); | |
1061 | } | |
1062 | ||
1063 | uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); | |
1064 | /* s_bsize already set */ | |
1065 | /* s_fsize already set */ | |
1066 | uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); | |
1067 | uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); | |
1068 | uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); | |
1069 | uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); | |
1070 | uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); | |
1071 | uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); | |
abf5d15f ED |
1072 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, |
1073 | uspi->s_fshift); | |
1da177e4 LT |
1074 | uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); |
1075 | uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); | |
1076 | /* s_sbsize already set */ | |
1077 | uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); | |
1078 | uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); | |
1079 | uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); | |
1080 | uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); | |
1081 | uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); | |
1082 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); | |
1083 | uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); | |
1084 | uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); | |
3313e292 ED |
1085 | |
1086 | if (uspi->fs_magic == UFS2_MAGIC) | |
1087 | uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); | |
1088 | else | |
1089 | uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); | |
1090 | ||
1da177e4 LT |
1091 | uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); |
1092 | uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); | |
1093 | uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); | |
1094 | uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); | |
1095 | uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); | |
1096 | uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); | |
1097 | uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); | |
647b7e87 ED |
1098 | uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); |
1099 | uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); | |
1da177e4 LT |
1100 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); |
1101 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); | |
1da177e4 LT |
1102 | uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); |
1103 | uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); | |
1104 | uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); | |
1105 | ||
1106 | /* | |
1107 | * Compute another frequently used values | |
1108 | */ | |
1109 | uspi->s_fpbmask = uspi->s_fpb - 1; | |
abf5d15f | 1110 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1da177e4 | 1111 | uspi->s_apbshift = uspi->s_bshift - 3; |
abf5d15f | 1112 | else |
1da177e4 | 1113 | uspi->s_apbshift = uspi->s_bshift - 2; |
abf5d15f | 1114 | |
1da177e4 LT |
1115 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
1116 | uspi->s_3apbshift = uspi->s_apbshift * 3; | |
1117 | uspi->s_apb = 1 << uspi->s_apbshift; | |
1118 | uspi->s_2apb = 1 << uspi->s_2apbshift; | |
1119 | uspi->s_3apb = 1 << uspi->s_3apbshift; | |
1120 | uspi->s_apbmask = uspi->s_apb - 1; | |
1121 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; | |
1122 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; | |
1123 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; | |
1124 | uspi->s_bpf = uspi->s_fsize << 3; | |
1125 | uspi->s_bpfshift = uspi->s_fshift + 3; | |
1126 | uspi->s_bpfmask = uspi->s_bpf - 1; | |
90b315af ED |
1127 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || |
1128 | (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) | |
1da177e4 | 1129 | uspi->s_maxsymlinklen = |
647b7e87 | 1130 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); |
1da177e4 | 1131 | |
9e6766cc DG |
1132 | if (uspi->fs_magic == UFS2_MAGIC) |
1133 | maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); | |
1134 | else | |
1135 | maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); | |
1136 | if (uspi->s_maxsymlinklen > maxsymlen) { | |
1137 | ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " | |
1138 | "fast symlink size (%u)\n", uspi->s_maxsymlinklen); | |
1139 | uspi->s_maxsymlinklen = maxsymlen; | |
1140 | } | |
1141 | ||
b55c460d DH |
1142 | inode = ufs_iget(sb, UFS_ROOTINO); |
1143 | if (IS_ERR(inode)) { | |
1144 | ret = PTR_ERR(inode); | |
1da177e4 | 1145 | goto failed; |
b55c460d | 1146 | } |
1da177e4 | 1147 | sb->s_root = d_alloc_root(inode); |
b55c460d DH |
1148 | if (!sb->s_root) { |
1149 | ret = -ENOMEM; | |
1da177e4 | 1150 | goto dalloc_failed; |
b55c460d | 1151 | } |
1da177e4 | 1152 | |
ee3ffd6c | 1153 | ufs_setup_cstotal(sb); |
1da177e4 LT |
1154 | /* |
1155 | * Read cylinder group structures | |
1156 | */ | |
1157 | if (!(sb->s_flags & MS_RDONLY)) | |
1158 | if (!ufs_read_cylinder_structures(sb)) | |
1159 | goto failed; | |
1160 | ||
abf5d15f | 1161 | UFSD("EXIT\n"); |
1da177e4 LT |
1162 | return 0; |
1163 | ||
1164 | dalloc_failed: | |
1165 | iput(inode); | |
1166 | failed: | |
f99d49ad JJ |
1167 | if (ubh) |
1168 | ubh_brelse_uspi (uspi); | |
1169 | kfree (uspi); | |
1170 | kfree(sbi); | |
1da177e4 | 1171 | sb->s_fs_info = NULL; |
abf5d15f | 1172 | UFSD("EXIT (FAILED)\n"); |
b55c460d | 1173 | return ret; |
1da177e4 LT |
1174 | |
1175 | failed_nomem: | |
abf5d15f | 1176 | UFSD("EXIT (NOMEM)\n"); |
1da177e4 LT |
1177 | return -ENOMEM; |
1178 | } | |
1179 | ||
8c800656 | 1180 | static int ufs_sync_fs(struct super_block *sb, int wait) |
647b7e87 | 1181 | { |
1da177e4 LT |
1182 | struct ufs_sb_private_info * uspi; |
1183 | struct ufs_super_block_first * usb1; | |
1184 | struct ufs_super_block_third * usb3; | |
1185 | unsigned flags; | |
1186 | ||
ebc1ac16 | 1187 | lock_super(sb); |
1da177e4 | 1188 | lock_kernel(); |
8c800656 | 1189 | |
abf5d15f | 1190 | UFSD("ENTER\n"); |
8c800656 | 1191 | |
1da177e4 LT |
1192 | flags = UFS_SB(sb)->s_flags; |
1193 | uspi = UFS_SB(sb)->s_uspi; | |
7b4ee73e E |
1194 | usb1 = ubh_get_usb_first(uspi); |
1195 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 1196 | |
8c800656 CH |
1197 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
1198 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN || | |
1199 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || | |
1200 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) | |
1201 | ufs_set_fs_state(sb, usb1, usb3, | |
1202 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
1203 | ufs_put_cstotal(sb); | |
1da177e4 | 1204 | sb->s_dirt = 0; |
8c800656 | 1205 | |
abf5d15f | 1206 | UFSD("EXIT\n"); |
1da177e4 | 1207 | unlock_kernel(); |
ebc1ac16 | 1208 | unlock_super(sb); |
8c800656 CH |
1209 | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | static void ufs_write_super(struct super_block *sb) | |
1214 | { | |
1215 | if (!(sb->s_flags & MS_RDONLY)) | |
1216 | ufs_sync_fs(sb, 1); | |
1217 | else | |
1218 | sb->s_dirt = 0; | |
1da177e4 LT |
1219 | } |
1220 | ||
abf5d15f | 1221 | static void ufs_put_super(struct super_block *sb) |
1da177e4 LT |
1222 | { |
1223 | struct ufs_sb_info * sbi = UFS_SB(sb); | |
1224 | ||
abf5d15f | 1225 | UFSD("ENTER\n"); |
1da177e4 | 1226 | |
8c85e125 CH |
1227 | if (sb->s_dirt) |
1228 | ufs_write_super(sb); | |
1229 | ||
1da177e4 | 1230 | if (!(sb->s_flags & MS_RDONLY)) |
ee3ffd6c | 1231 | ufs_put_super_internal(sb); |
1da177e4 LT |
1232 | |
1233 | ubh_brelse_uspi (sbi->s_uspi); | |
1234 | kfree (sbi->s_uspi); | |
1235 | kfree (sbi); | |
1236 | sb->s_fs_info = NULL; | |
647b7e87 | 1237 | UFSD("EXIT\n"); |
1da177e4 LT |
1238 | return; |
1239 | } | |
1240 | ||
1241 | ||
1242 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) | |
1243 | { | |
1244 | struct ufs_sb_private_info * uspi; | |
1245 | struct ufs_super_block_first * usb1; | |
1246 | struct ufs_super_block_third * usb3; | |
1247 | unsigned new_mount_opt, ufstype; | |
1248 | unsigned flags; | |
337eb00a AIB |
1249 | |
1250 | lock_kernel(); | |
bbd6851a | 1251 | lock_super(sb); |
1da177e4 LT |
1252 | uspi = UFS_SB(sb)->s_uspi; |
1253 | flags = UFS_SB(sb)->s_flags; | |
7b4ee73e E |
1254 | usb1 = ubh_get_usb_first(uspi); |
1255 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 LT |
1256 | |
1257 | /* | |
1258 | * Allow the "check" option to be passed as a remount option. | |
1259 | * It is not possible to change ufstype option during remount | |
1260 | */ | |
1261 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
1262 | new_mount_opt = 0; | |
1263 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); | |
bbd6851a AV |
1264 | if (!ufs_parse_options (data, &new_mount_opt)) { |
1265 | unlock_super(sb); | |
337eb00a | 1266 | unlock_kernel(); |
1da177e4 | 1267 | return -EINVAL; |
bbd6851a | 1268 | } |
1da177e4 LT |
1269 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { |
1270 | new_mount_opt |= ufstype; | |
ee3ffd6c | 1271 | } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
1da177e4 | 1272 | printk("ufstype can't be changed during remount\n"); |
bbd6851a | 1273 | unlock_super(sb); |
337eb00a | 1274 | unlock_kernel(); |
1da177e4 LT |
1275 | return -EINVAL; |
1276 | } | |
1277 | ||
1278 | if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { | |
1279 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
bbd6851a | 1280 | unlock_super(sb); |
337eb00a | 1281 | unlock_kernel(); |
1da177e4 LT |
1282 | return 0; |
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * fs was mouted as rw, remounting ro | |
1287 | */ | |
1288 | if (*mount_flags & MS_RDONLY) { | |
ee3ffd6c | 1289 | ufs_put_super_internal(sb); |
1da177e4 LT |
1290 | usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
1291 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN | |
252e211e | 1292 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1da177e4 LT |
1293 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1294 | ufs_set_fs_state(sb, usb1, usb3, | |
1295 | UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); | |
9695ef16 | 1296 | ubh_mark_buffer_dirty (USPI_UBH(uspi)); |
1da177e4 LT |
1297 | sb->s_dirt = 0; |
1298 | sb->s_flags |= MS_RDONLY; | |
ee3ffd6c | 1299 | } else { |
1da177e4 LT |
1300 | /* |
1301 | * fs was mounted as ro, remounting rw | |
1302 | */ | |
1da177e4 LT |
1303 | #ifndef CONFIG_UFS_FS_WRITE |
1304 | printk("ufs was compiled with read-only support, " | |
1305 | "can't be mounted as read-write\n"); | |
bbd6851a | 1306 | unlock_super(sb); |
337eb00a | 1307 | unlock_kernel(); |
1da177e4 LT |
1308 | return -EINVAL; |
1309 | #else | |
1310 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && | |
252e211e | 1311 | ufstype != UFS_MOUNT_UFSTYPE_SUNOS && |
1da177e4 | 1312 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && |
cbcae39f ED |
1313 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && |
1314 | ufstype != UFS_MOUNT_UFSTYPE_UFS2) { | |
1da177e4 | 1315 | printk("this ufstype is read-only supported\n"); |
bbd6851a | 1316 | unlock_super(sb); |
337eb00a | 1317 | unlock_kernel(); |
1da177e4 LT |
1318 | return -EINVAL; |
1319 | } | |
ee3ffd6c | 1320 | if (!ufs_read_cylinder_structures(sb)) { |
1da177e4 | 1321 | printk("failed during remounting\n"); |
bbd6851a | 1322 | unlock_super(sb); |
337eb00a | 1323 | unlock_kernel(); |
1da177e4 LT |
1324 | return -EPERM; |
1325 | } | |
1326 | sb->s_flags &= ~MS_RDONLY; | |
1327 | #endif | |
1328 | } | |
1329 | UFS_SB(sb)->s_mount_opt = new_mount_opt; | |
bbd6851a | 1330 | unlock_super(sb); |
337eb00a | 1331 | unlock_kernel(); |
1da177e4 LT |
1332 | return 0; |
1333 | } | |
1334 | ||
2a9807c0 ED |
1335 | static int ufs_show_options(struct seq_file *seq, struct vfsmount *vfs) |
1336 | { | |
1337 | struct ufs_sb_info *sbi = UFS_SB(vfs->mnt_sb); | |
1338 | unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; | |
a447c093 | 1339 | const struct match_token *tp = tokens; |
2a9807c0 ED |
1340 | |
1341 | while (tp->token != Opt_onerror_panic && tp->token != mval) | |
1342 | ++tp; | |
1343 | BUG_ON(tp->token == Opt_onerror_panic); | |
1344 | seq_printf(seq, ",%s", tp->pattern); | |
1345 | ||
1346 | mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR; | |
1347 | while (tp->token != Opt_err && tp->token != mval) | |
1348 | ++tp; | |
1349 | BUG_ON(tp->token == Opt_err); | |
1350 | seq_printf(seq, ",%s", tp->pattern); | |
1351 | ||
1352 | return 0; | |
1353 | } | |
1354 | ||
647b7e87 | 1355 | static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 1356 | { |
726c3342 | 1357 | struct super_block *sb = dentry->d_sb; |
647b7e87 ED |
1358 | struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; |
1359 | unsigned flags = UFS_SB(sb)->s_flags; | |
1360 | struct ufs_super_block_first *usb1; | |
1361 | struct ufs_super_block_second *usb2; | |
1362 | struct ufs_super_block_third *usb3; | |
41d577aa | 1363 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
1da177e4 LT |
1364 | |
1365 | lock_kernel(); | |
1366 | ||
647b7e87 ED |
1367 | usb1 = ubh_get_usb_first(uspi); |
1368 | usb2 = ubh_get_usb_second(uspi); | |
1369 | usb3 = ubh_get_usb_third(uspi); | |
1da177e4 | 1370 | |
1da177e4 LT |
1371 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
1372 | buf->f_type = UFS2_MAGIC; | |
647b7e87 | 1373 | buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); |
647b7e87 | 1374 | } else { |
1da177e4 LT |
1375 | buf->f_type = UFS_MAGIC; |
1376 | buf->f_blocks = uspi->s_dsize; | |
1da177e4 | 1377 | } |
ee3ffd6c ED |
1378 | buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + |
1379 | uspi->cs_total.cs_nffree; | |
1380 | buf->f_ffree = uspi->cs_total.cs_nifree; | |
1da177e4 LT |
1381 | buf->f_bsize = sb->s_blocksize; |
1382 | buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) | |
1383 | ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; | |
1384 | buf->f_files = uspi->s_ncg * uspi->s_ipg; | |
1385 | buf->f_namelen = UFS_MAXNAMLEN; | |
41d577aa CL |
1386 | buf->f_fsid.val[0] = (u32)id; |
1387 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
1da177e4 LT |
1388 | |
1389 | unlock_kernel(); | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
e18b890b | 1394 | static struct kmem_cache * ufs_inode_cachep; |
1da177e4 LT |
1395 | |
1396 | static struct inode *ufs_alloc_inode(struct super_block *sb) | |
1397 | { | |
1398 | struct ufs_inode_info *ei; | |
e94b1766 | 1399 | ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
1400 | if (!ei) |
1401 | return NULL; | |
1402 | ei->vfs_inode.i_version = 1; | |
1403 | return &ei->vfs_inode; | |
1404 | } | |
1405 | ||
1406 | static void ufs_destroy_inode(struct inode *inode) | |
1407 | { | |
1408 | kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); | |
1409 | } | |
1410 | ||
51cc5068 | 1411 | static void init_once(void *foo) |
1da177e4 LT |
1412 | { |
1413 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; | |
1414 | ||
a35afb83 | 1415 | inode_init_once(&ei->vfs_inode); |
1da177e4 | 1416 | } |
20c2df83 | 1417 | |
1da177e4 LT |
1418 | static int init_inodecache(void) |
1419 | { | |
1420 | ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", | |
1421 | sizeof(struct ufs_inode_info), | |
fffb60f9 PJ |
1422 | 0, (SLAB_RECLAIM_ACCOUNT| |
1423 | SLAB_MEM_SPREAD), | |
20c2df83 | 1424 | init_once); |
1da177e4 LT |
1425 | if (ufs_inode_cachep == NULL) |
1426 | return -ENOMEM; | |
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | static void destroy_inodecache(void) | |
1431 | { | |
1a1d92c1 | 1432 | kmem_cache_destroy(ufs_inode_cachep); |
1da177e4 LT |
1433 | } |
1434 | ||
1435 | #ifdef CONFIG_QUOTA | |
1436 | static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t); | |
1437 | static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t); | |
1438 | #endif | |
1439 | ||
ee9b6d61 | 1440 | static const struct super_operations ufs_super_ops = { |
1da177e4 LT |
1441 | .alloc_inode = ufs_alloc_inode, |
1442 | .destroy_inode = ufs_destroy_inode, | |
1da177e4 LT |
1443 | .write_inode = ufs_write_inode, |
1444 | .delete_inode = ufs_delete_inode, | |
1445 | .put_super = ufs_put_super, | |
1446 | .write_super = ufs_write_super, | |
8c800656 | 1447 | .sync_fs = ufs_sync_fs, |
1da177e4 LT |
1448 | .statfs = ufs_statfs, |
1449 | .remount_fs = ufs_remount, | |
2a9807c0 | 1450 | .show_options = ufs_show_options, |
1da177e4 LT |
1451 | #ifdef CONFIG_QUOTA |
1452 | .quota_read = ufs_quota_read, | |
1453 | .quota_write = ufs_quota_write, | |
1454 | #endif | |
1455 | }; | |
1456 | ||
1457 | #ifdef CONFIG_QUOTA | |
1458 | ||
1459 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
1460 | * acquiring the locks... As quota files are never truncated and quota code | |
1461 | * itself serializes the operations (and noone else should touch the files) | |
1462 | * we don't have to be afraid of races */ | |
1463 | static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data, | |
1464 | size_t len, loff_t off) | |
1465 | { | |
1466 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1467 | sector_t blk = off >> sb->s_blocksize_bits; | |
1468 | int err = 0; | |
1469 | int offset = off & (sb->s_blocksize - 1); | |
1470 | int tocopy; | |
1471 | size_t toread; | |
1472 | struct buffer_head *bh; | |
1473 | loff_t i_size = i_size_read(inode); | |
1474 | ||
1475 | if (off > i_size) | |
1476 | return 0; | |
1477 | if (off+len > i_size) | |
1478 | len = i_size-off; | |
1479 | toread = len; | |
1480 | while (toread > 0) { | |
1481 | tocopy = sb->s_blocksize - offset < toread ? | |
1482 | sb->s_blocksize - offset : toread; | |
1483 | ||
1484 | bh = ufs_bread(inode, blk, 0, &err); | |
1485 | if (err) | |
1486 | return err; | |
1487 | if (!bh) /* A hole? */ | |
1488 | memset(data, 0, tocopy); | |
1489 | else { | |
1490 | memcpy(data, bh->b_data+offset, tocopy); | |
1491 | brelse(bh); | |
1492 | } | |
1493 | offset = 0; | |
1494 | toread -= tocopy; | |
1495 | data += tocopy; | |
1496 | blk++; | |
1497 | } | |
1498 | return len; | |
1499 | } | |
1500 | ||
1501 | /* Write to quotafile */ | |
1502 | static ssize_t ufs_quota_write(struct super_block *sb, int type, | |
1503 | const char *data, size_t len, loff_t off) | |
1504 | { | |
1505 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
1506 | sector_t blk = off >> sb->s_blocksize_bits; | |
1507 | int err = 0; | |
1508 | int offset = off & (sb->s_blocksize - 1); | |
1509 | int tocopy; | |
1510 | size_t towrite = len; | |
1511 | struct buffer_head *bh; | |
1512 | ||
5c81a419 | 1513 | mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); |
1da177e4 LT |
1514 | while (towrite > 0) { |
1515 | tocopy = sb->s_blocksize - offset < towrite ? | |
1516 | sb->s_blocksize - offset : towrite; | |
1517 | ||
1518 | bh = ufs_bread(inode, blk, 1, &err); | |
1519 | if (!bh) | |
1520 | goto out; | |
1521 | lock_buffer(bh); | |
1522 | memcpy(bh->b_data+offset, data, tocopy); | |
1523 | flush_dcache_page(bh->b_page); | |
1524 | set_buffer_uptodate(bh); | |
1525 | mark_buffer_dirty(bh); | |
1526 | unlock_buffer(bh); | |
1527 | brelse(bh); | |
1528 | offset = 0; | |
1529 | towrite -= tocopy; | |
1530 | data += tocopy; | |
1531 | blk++; | |
1532 | } | |
1533 | out: | |
15b2fe39 | 1534 | if (len == towrite) { |
1b1dcc1b | 1535 | mutex_unlock(&inode->i_mutex); |
1da177e4 | 1536 | return err; |
15b2fe39 | 1537 | } |
1da177e4 LT |
1538 | if (inode->i_size < off+len-towrite) |
1539 | i_size_write(inode, off+len-towrite); | |
1540 | inode->i_version++; | |
1541 | inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; | |
1542 | mark_inode_dirty(inode); | |
1b1dcc1b | 1543 | mutex_unlock(&inode->i_mutex); |
1da177e4 LT |
1544 | return len - towrite; |
1545 | } | |
1546 | ||
1547 | #endif | |
1548 | ||
454e2398 DH |
1549 | static int ufs_get_sb(struct file_system_type *fs_type, |
1550 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) | |
1da177e4 | 1551 | { |
454e2398 | 1552 | return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt); |
1da177e4 LT |
1553 | } |
1554 | ||
1555 | static struct file_system_type ufs_fs_type = { | |
1556 | .owner = THIS_MODULE, | |
1557 | .name = "ufs", | |
1558 | .get_sb = ufs_get_sb, | |
1559 | .kill_sb = kill_block_super, | |
1560 | .fs_flags = FS_REQUIRES_DEV, | |
1561 | }; | |
1562 | ||
1563 | static int __init init_ufs_fs(void) | |
1564 | { | |
1565 | int err = init_inodecache(); | |
1566 | if (err) | |
1567 | goto out1; | |
1568 | err = register_filesystem(&ufs_fs_type); | |
1569 | if (err) | |
1570 | goto out; | |
1571 | return 0; | |
1572 | out: | |
1573 | destroy_inodecache(); | |
1574 | out1: | |
1575 | return err; | |
1576 | } | |
1577 | ||
1578 | static void __exit exit_ufs_fs(void) | |
1579 | { | |
1580 | unregister_filesystem(&ufs_fs_type); | |
1581 | destroy_inodecache(); | |
1582 | } | |
1583 | ||
1584 | module_init(init_ufs_fs) | |
1585 | module_exit(exit_ufs_fs) | |
1586 | MODULE_LICENSE("GPL"); |