1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * linux/fs/ufs/super.c |
4 | * |
5 | * Copyright (C) 1998 |
6 | * Daniel Pirkl <daniel.pirkl@email.cz> |
7 | * Charles University, Faculty of Mathematics and Physics |
8 | */ |
9 | |
10 | /* Derived from |
11 | * |
12 | * linux/fs/ext2/super.c |
13 | * |
14 | * Copyright (C) 1992, 1993, 1994, 1995 |
15 | * Remy Card (card@masi.ibp.fr) |
16 | * Laboratoire MASI - Institut Blaise Pascal |
17 | * Universite Pierre et Marie Curie (Paris VI) |
18 | * |
19 | * from |
20 | * |
21 | * linux/fs/minix/inode.c |
22 | * |
23 | * Copyright (C) 1991, 1992 Linus Torvalds |
24 | * |
25 | * Big-endian to little-endian byte-swapping/bitmaps by |
26 | * David S. Miller (davem@caip.rutgers.edu), 1995 |
27 | */ |
28 | |
29 | /* |
30 | * Inspired by |
31 | * |
32 | * linux/fs/ufs/super.c |
33 | * |
34 | * Copyright (C) 1996 |
35 | * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) |
36 | * Laboratory for Computer Science Research Computing Facility |
37 | * Rutgers, The State University of New Jersey |
38 | * |
39 | * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) |
40 | * |
41 | * Kernel module support added on 96/04/26 by |
42 | * Stefan Reinauer <stepan@home.culture.mipt.ru> |
43 | * |
44 | * Module usage counts added on 96/04/29 by |
45 | * Gertjan van Wingerde <gwingerde@gmail.com> |
46 | * |
47 | * Clean swab support on 19970406 by |
48 | * Francois-Rene Rideau <fare@tunes.org> |
49 | * |
50 | * 4.4BSD (FreeBSD) support added on February 1st 1998 by |
51 | * Niels Kristian Bech Jensen <nkbj@image.dk> partially based |
52 | * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. |
53 | * |
54 | * NeXTstep support added on February 5th 1998 by |
55 | * Niels Kristian Bech Jensen <nkbj@image.dk>. |
56 | * |
57 | * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998 |
58 | * |
59 | * HP/UX hfs filesystem support added by |
60 | * Martin K. Petersen <mkp@mkp.net>, August 1999 |
61 | * |
62 | * UFS2 (of FreeBSD 5.x) support added by |
63 | * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004 |
64 | * |
65 | * UFS2 write support added by |
66 | * Evgeniy Dushistov <dushistov@mail.ru>, 2007 |
67 | */ |
68 | |
69 | #include <linux/exportfs.h> |
70 | #include <linux/module.h> |
71 | #include <linux/bitops.h> |
72 | |
73 | #include <linux/stdarg.h> |
74 | |
75 | #include <linux/uaccess.h> |
76 | |
77 | #include <linux/errno.h> |
78 | #include <linux/fs.h> |
79 | #include <linux/slab.h> |
80 | #include <linux/time.h> |
81 | #include <linux/stat.h> |
82 | #include <linux/string.h> |
83 | #include <linux/blkdev.h> |
84 | #include <linux/backing-dev.h> |
85 | #include <linux/init.h> |
86 | #include <linux/parser.h> |
87 | #include <linux/buffer_head.h> |
88 | #include <linux/vfs.h> |
89 | #include <linux/log2.h> |
90 | #include <linux/mount.h> |
91 | #include <linux/seq_file.h> |
92 | #include <linux/iversion.h> |
93 | |
94 | #include "ufs_fs.h" |
95 | #include "ufs.h" |
96 | #include "swab.h" |
97 | #include "util.h" |
98 | |
99 | static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) |
100 | { |
101 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
102 | struct inode *inode; |
103 | |
104 | if (ino < UFS_ROOTINO || ino > (u64)uspi->s_ncg * uspi->s_ipg) |
105 | return ERR_PTR(error: -ESTALE); |
106 | |
107 | inode = ufs_iget(sb, ino); |
108 | if (IS_ERR(ptr: inode)) |
109 | return ERR_CAST(ptr: inode); |
110 | if (generation && inode->i_generation != generation) { |
111 | iput(inode); |
112 | return ERR_PTR(error: -ESTALE); |
113 | } |
114 | return inode; |
115 | } |
116 | |
117 | static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid, |
118 | int fh_len, int fh_type) |
119 | { |
120 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, get_inode: ufs_nfs_get_inode); |
121 | } |
122 | |
123 | static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid, |
124 | int fh_len, int fh_type) |
125 | { |
126 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, get_inode: ufs_nfs_get_inode); |
127 | } |
128 | |
129 | static struct dentry *ufs_get_parent(struct dentry *child) |
130 | { |
131 | ino_t ino; |
132 | |
133 | ino = ufs_inode_by_name(d_inode(dentry: child), &dotdot_name); |
134 | if (!ino) |
135 | return ERR_PTR(error: -ENOENT); |
136 | return d_obtain_alias(ufs_iget(child->d_sb, ino)); |
137 | } |
138 | |
139 | static const struct export_operations ufs_export_ops = { |
140 | .encode_fh = generic_encode_ino32_fh, |
141 | .fh_to_dentry = ufs_fh_to_dentry, |
142 | .fh_to_parent = ufs_fh_to_parent, |
143 | .get_parent = ufs_get_parent, |
144 | }; |
145 | |
146 | #ifdef CONFIG_UFS_DEBUG |
147 | /* |
148 | * Print contents of ufs_super_block, useful for debugging |
149 | */ |
150 | static void ufs_print_super_stuff(struct super_block *sb, |
151 | struct ufs_super_block_first *usb1, |
152 | struct ufs_super_block_second *usb2, |
153 | struct ufs_super_block_third *usb3) |
154 | { |
155 | u32 magic = fs32_to_cpu(sbp: sb, n: usb3->fs_magic); |
156 | |
157 | pr_debug("ufs_print_super_stuff\n" ); |
158 | pr_debug(" magic: 0x%x\n" , magic); |
159 | if (fs32_to_cpu(sbp: sb, n: usb3->fs_magic) == UFS2_MAGIC) { |
160 | pr_debug(" fs_size: %llu\n" , (unsigned long long) |
161 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); |
162 | pr_debug(" fs_dsize: %llu\n" , (unsigned long long) |
163 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); |
164 | pr_debug(" bsize: %u\n" , |
165 | fs32_to_cpu(sb, usb1->fs_bsize)); |
166 | pr_debug(" fsize: %u\n" , |
167 | fs32_to_cpu(sb, usb1->fs_fsize)); |
168 | pr_debug(" fs_volname: %s\n" , usb2->fs_un.fs_u2.fs_volname); |
169 | pr_debug(" fs_sblockloc: %llu\n" , (unsigned long long) |
170 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); |
171 | pr_debug(" cs_ndir(No of dirs): %llu\n" , (unsigned long long) |
172 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); |
173 | pr_debug(" cs_nbfree(No of free blocks): %llu\n" , |
174 | (unsigned long long) |
175 | fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); |
176 | pr_info(" cs_nifree(Num of free inodes): %llu\n" , |
177 | (unsigned long long) |
178 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); |
179 | pr_info(" cs_nffree(Num of free frags): %llu\n" , |
180 | (unsigned long long) |
181 | fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); |
182 | pr_info(" fs_maxsymlinklen: %u\n" , |
183 | fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); |
184 | } else { |
185 | pr_debug(" sblkno: %u\n" , fs32_to_cpu(sb, usb1->fs_sblkno)); |
186 | pr_debug(" cblkno: %u\n" , fs32_to_cpu(sb, usb1->fs_cblkno)); |
187 | pr_debug(" iblkno: %u\n" , fs32_to_cpu(sb, usb1->fs_iblkno)); |
188 | pr_debug(" dblkno: %u\n" , fs32_to_cpu(sb, usb1->fs_dblkno)); |
189 | pr_debug(" cgoffset: %u\n" , |
190 | fs32_to_cpu(sb, usb1->fs_cgoffset)); |
191 | pr_debug(" ~cgmask: 0x%x\n" , |
192 | ~fs32_to_cpu(sb, usb1->fs_cgmask)); |
193 | pr_debug(" size: %u\n" , fs32_to_cpu(sb, usb1->fs_size)); |
194 | pr_debug(" dsize: %u\n" , fs32_to_cpu(sb, usb1->fs_dsize)); |
195 | pr_debug(" ncg: %u\n" , fs32_to_cpu(sb, usb1->fs_ncg)); |
196 | pr_debug(" bsize: %u\n" , fs32_to_cpu(sb, usb1->fs_bsize)); |
197 | pr_debug(" fsize: %u\n" , fs32_to_cpu(sb, usb1->fs_fsize)); |
198 | pr_debug(" frag: %u\n" , fs32_to_cpu(sb, usb1->fs_frag)); |
199 | pr_debug(" fragshift: %u\n" , |
200 | fs32_to_cpu(sb, usb1->fs_fragshift)); |
201 | pr_debug(" ~fmask: %u\n" , ~fs32_to_cpu(sb, usb1->fs_fmask)); |
202 | pr_debug(" fshift: %u\n" , fs32_to_cpu(sb, usb1->fs_fshift)); |
203 | pr_debug(" sbsize: %u\n" , fs32_to_cpu(sb, usb1->fs_sbsize)); |
204 | pr_debug(" spc: %u\n" , fs32_to_cpu(sb, usb1->fs_spc)); |
205 | pr_debug(" cpg: %u\n" , fs32_to_cpu(sb, usb1->fs_cpg)); |
206 | pr_debug(" ipg: %u\n" , fs32_to_cpu(sb, usb1->fs_ipg)); |
207 | pr_debug(" fpg: %u\n" , fs32_to_cpu(sb, usb1->fs_fpg)); |
208 | pr_debug(" csaddr: %u\n" , fs32_to_cpu(sb, usb1->fs_csaddr)); |
209 | pr_debug(" cssize: %u\n" , fs32_to_cpu(sb, usb1->fs_cssize)); |
210 | pr_debug(" cgsize: %u\n" , fs32_to_cpu(sb, usb1->fs_cgsize)); |
211 | pr_debug(" fstodb: %u\n" , |
212 | fs32_to_cpu(sb, usb1->fs_fsbtodb)); |
213 | pr_debug(" nrpos: %u\n" , fs32_to_cpu(sb, usb3->fs_nrpos)); |
214 | pr_debug(" ndir %u\n" , |
215 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); |
216 | pr_debug(" nifree %u\n" , |
217 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); |
218 | pr_debug(" nbfree %u\n" , |
219 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); |
220 | pr_debug(" nffree %u\n" , |
221 | fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); |
222 | } |
223 | pr_debug("\n" ); |
224 | } |
225 | |
226 | /* |
227 | * Print contents of ufs_cylinder_group, useful for debugging |
228 | */ |
229 | static void ufs_print_cylinder_stuff(struct super_block *sb, |
230 | struct ufs_cylinder_group *cg) |
231 | { |
232 | pr_debug("\nufs_print_cylinder_stuff\n" ); |
233 | pr_debug("size of ucg: %zu\n" , sizeof(struct ufs_cylinder_group)); |
234 | pr_debug(" magic: %x\n" , fs32_to_cpu(sb, cg->cg_magic)); |
235 | pr_debug(" time: %u\n" , fs32_to_cpu(sb, cg->cg_time)); |
236 | pr_debug(" cgx: %u\n" , fs32_to_cpu(sb, cg->cg_cgx)); |
237 | pr_debug(" ncyl: %u\n" , fs16_to_cpu(sb, cg->cg_ncyl)); |
238 | pr_debug(" niblk: %u\n" , fs16_to_cpu(sb, cg->cg_niblk)); |
239 | pr_debug(" ndblk: %u\n" , fs32_to_cpu(sb, cg->cg_ndblk)); |
240 | pr_debug(" cs_ndir: %u\n" , fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); |
241 | pr_debug(" cs_nbfree: %u\n" , fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); |
242 | pr_debug(" cs_nifree: %u\n" , fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); |
243 | pr_debug(" cs_nffree: %u\n" , fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); |
244 | pr_debug(" rotor: %u\n" , fs32_to_cpu(sb, cg->cg_rotor)); |
245 | pr_debug(" frotor: %u\n" , fs32_to_cpu(sb, cg->cg_frotor)); |
246 | pr_debug(" irotor: %u\n" , fs32_to_cpu(sb, cg->cg_irotor)); |
247 | pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n" , |
248 | fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), |
249 | fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), |
250 | fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), |
251 | fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); |
252 | pr_debug(" btotoff: %u\n" , fs32_to_cpu(sb, cg->cg_btotoff)); |
253 | pr_debug(" boff: %u\n" , fs32_to_cpu(sb, cg->cg_boff)); |
254 | pr_debug(" iuseoff: %u\n" , fs32_to_cpu(sb, cg->cg_iusedoff)); |
255 | pr_debug(" freeoff: %u\n" , fs32_to_cpu(sb, cg->cg_freeoff)); |
256 | pr_debug(" nextfreeoff: %u\n" , fs32_to_cpu(sb, cg->cg_nextfreeoff)); |
257 | pr_debug(" clustersumoff %u\n" , |
258 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); |
259 | pr_debug(" clusteroff %u\n" , |
260 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); |
261 | pr_debug(" nclusterblks %u\n" , |
262 | fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); |
263 | pr_debug("\n" ); |
264 | } |
265 | #else |
266 | # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
267 | # define ufs_print_cylinder_stuff(sb, cg) /**/ |
268 | #endif /* CONFIG_UFS_DEBUG */ |
269 | |
270 | static const struct super_operations ufs_super_ops; |
271 | |
272 | void ufs_error (struct super_block * sb, const char * function, |
273 | const char * fmt, ...) |
274 | { |
275 | struct ufs_sb_private_info * uspi; |
276 | struct ufs_super_block_first * usb1; |
277 | struct va_format vaf; |
278 | va_list args; |
279 | |
280 | uspi = UFS_SB(sb)->s_uspi; |
281 | usb1 = ubh_get_usb_first(uspi); |
282 | |
283 | if (!sb_rdonly(sb)) { |
284 | usb1->fs_clean = UFS_FSBAD; |
285 | ubh_mark_buffer_dirty(USPI_UBH(spi: uspi)); |
286 | ufs_mark_sb_dirty(sb); |
287 | sb->s_flags |= SB_RDONLY; |
288 | } |
289 | va_start(args, fmt); |
290 | vaf.fmt = fmt; |
291 | vaf.va = &args; |
292 | switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { |
293 | case UFS_MOUNT_ONERROR_PANIC: |
294 | panic(fmt: "panic (device %s): %s: %pV\n" , |
295 | sb->s_id, function, &vaf); |
296 | |
297 | case UFS_MOUNT_ONERROR_LOCK: |
298 | case UFS_MOUNT_ONERROR_UMOUNT: |
299 | case UFS_MOUNT_ONERROR_REPAIR: |
300 | pr_crit("error (device %s): %s: %pV\n" , |
301 | sb->s_id, function, &vaf); |
302 | } |
303 | va_end(args); |
304 | } |
305 | |
306 | void ufs_panic (struct super_block * sb, const char * function, |
307 | const char * fmt, ...) |
308 | { |
309 | struct ufs_sb_private_info * uspi; |
310 | struct ufs_super_block_first * usb1; |
311 | struct va_format vaf; |
312 | va_list args; |
313 | |
314 | uspi = UFS_SB(sb)->s_uspi; |
315 | usb1 = ubh_get_usb_first(uspi); |
316 | |
317 | if (!sb_rdonly(sb)) { |
318 | usb1->fs_clean = UFS_FSBAD; |
319 | ubh_mark_buffer_dirty(USPI_UBH(spi: uspi)); |
320 | ufs_mark_sb_dirty(sb); |
321 | } |
322 | va_start(args, fmt); |
323 | vaf.fmt = fmt; |
324 | vaf.va = &args; |
325 | sb->s_flags |= SB_RDONLY; |
326 | pr_crit("panic (device %s): %s: %pV\n" , |
327 | sb->s_id, function, &vaf); |
328 | va_end(args); |
329 | } |
330 | |
331 | void ufs_warning (struct super_block * sb, const char * function, |
332 | const char * fmt, ...) |
333 | { |
334 | struct va_format vaf; |
335 | va_list args; |
336 | |
337 | va_start(args, fmt); |
338 | vaf.fmt = fmt; |
339 | vaf.va = &args; |
340 | pr_warn("(device %s): %s: %pV\n" , |
341 | sb->s_id, function, &vaf); |
342 | va_end(args); |
343 | } |
344 | |
345 | enum { |
346 | Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
347 | Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, |
348 | Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, |
349 | Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, |
350 | Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, |
351 | Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, |
352 | Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, |
353 | Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, |
354 | Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, |
355 | Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, |
356 | Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, |
357 | Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, |
358 | Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, |
359 | Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, |
360 | Opt_err |
361 | }; |
362 | |
363 | static const match_table_t tokens = { |
364 | {Opt_type_old, "ufstype=old" }, |
365 | {Opt_type_sunx86, "ufstype=sunx86" }, |
366 | {Opt_type_sun, "ufstype=sun" }, |
367 | {Opt_type_sunos, "ufstype=sunos" }, |
368 | {Opt_type_44bsd, "ufstype=44bsd" }, |
369 | {Opt_type_ufs2, "ufstype=ufs2" }, |
370 | {Opt_type_ufs2, "ufstype=5xbsd" }, |
371 | {Opt_type_hp, "ufstype=hp" }, |
372 | {Opt_type_nextstepcd, "ufstype=nextstep-cd" }, |
373 | {Opt_type_nextstep, "ufstype=nextstep" }, |
374 | {Opt_type_openstep, "ufstype=openstep" }, |
375 | /*end of possible ufs types */ |
376 | {Opt_onerror_panic, "onerror=panic" }, |
377 | {Opt_onerror_lock, "onerror=lock" }, |
378 | {Opt_onerror_umount, "onerror=umount" }, |
379 | {Opt_onerror_repair, "onerror=repair" }, |
380 | {Opt_err, NULL} |
381 | }; |
382 | |
383 | static int ufs_parse_options (char * options, unsigned * mount_options) |
384 | { |
385 | char * p; |
386 | |
387 | UFSD("ENTER\n" ); |
388 | |
389 | if (!options) |
390 | return 1; |
391 | |
392 | while ((p = strsep(&options, "," )) != NULL) { |
393 | substring_t args[MAX_OPT_ARGS]; |
394 | int token; |
395 | if (!*p) |
396 | continue; |
397 | |
398 | token = match_token(p, table: tokens, args); |
399 | switch (token) { |
400 | case Opt_type_old: |
401 | ufs_clear_opt (*mount_options, UFSTYPE); |
402 | ufs_set_opt (*mount_options, UFSTYPE_OLD); |
403 | break; |
404 | case Opt_type_sunx86: |
405 | ufs_clear_opt (*mount_options, UFSTYPE); |
406 | ufs_set_opt (*mount_options, UFSTYPE_SUNx86); |
407 | break; |
408 | case Opt_type_sun: |
409 | ufs_clear_opt (*mount_options, UFSTYPE); |
410 | ufs_set_opt (*mount_options, UFSTYPE_SUN); |
411 | break; |
412 | case Opt_type_sunos: |
413 | ufs_clear_opt(*mount_options, UFSTYPE); |
414 | ufs_set_opt(*mount_options, UFSTYPE_SUNOS); |
415 | break; |
416 | case Opt_type_44bsd: |
417 | ufs_clear_opt (*mount_options, UFSTYPE); |
418 | ufs_set_opt (*mount_options, UFSTYPE_44BSD); |
419 | break; |
420 | case Opt_type_ufs2: |
421 | ufs_clear_opt(*mount_options, UFSTYPE); |
422 | ufs_set_opt(*mount_options, UFSTYPE_UFS2); |
423 | break; |
424 | case Opt_type_hp: |
425 | ufs_clear_opt (*mount_options, UFSTYPE); |
426 | ufs_set_opt (*mount_options, UFSTYPE_HP); |
427 | break; |
428 | case Opt_type_nextstepcd: |
429 | ufs_clear_opt (*mount_options, UFSTYPE); |
430 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); |
431 | break; |
432 | case Opt_type_nextstep: |
433 | ufs_clear_opt (*mount_options, UFSTYPE); |
434 | ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); |
435 | break; |
436 | case Opt_type_openstep: |
437 | ufs_clear_opt (*mount_options, UFSTYPE); |
438 | ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); |
439 | break; |
440 | case Opt_onerror_panic: |
441 | ufs_clear_opt (*mount_options, ONERROR); |
442 | ufs_set_opt (*mount_options, ONERROR_PANIC); |
443 | break; |
444 | case Opt_onerror_lock: |
445 | ufs_clear_opt (*mount_options, ONERROR); |
446 | ufs_set_opt (*mount_options, ONERROR_LOCK); |
447 | break; |
448 | case Opt_onerror_umount: |
449 | ufs_clear_opt (*mount_options, ONERROR); |
450 | ufs_set_opt (*mount_options, ONERROR_UMOUNT); |
451 | break; |
452 | case Opt_onerror_repair: |
453 | pr_err("Unable to do repair on error, will lock lock instead\n" ); |
454 | ufs_clear_opt (*mount_options, ONERROR); |
455 | ufs_set_opt (*mount_options, ONERROR_REPAIR); |
456 | break; |
457 | default: |
458 | pr_err("Invalid option: \"%s\" or missing value\n" , p); |
459 | return 0; |
460 | } |
461 | } |
462 | return 1; |
463 | } |
464 | |
465 | /* |
466 | * Different types of UFS hold fs_cstotal in different |
467 | * places, and use different data structure for it. |
468 | * To make things simpler we just copy fs_cstotal to ufs_sb_private_info |
469 | */ |
470 | static void ufs_setup_cstotal(struct super_block *sb) |
471 | { |
472 | struct ufs_sb_info *sbi = UFS_SB(sb); |
473 | struct ufs_sb_private_info *uspi = sbi->s_uspi; |
474 | struct ufs_super_block_first *usb1; |
475 | struct ufs_super_block_second *usb2; |
476 | struct ufs_super_block_third *usb3; |
477 | unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
478 | |
479 | UFSD("ENTER, mtype=%u\n" , mtype); |
480 | usb1 = ubh_get_usb_first(uspi); |
481 | usb2 = ubh_get_usb_second(uspi); |
482 | usb3 = ubh_get_usb_third(uspi); |
483 | |
484 | if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && |
485 | (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) || |
486 | mtype == UFS_MOUNT_UFSTYPE_UFS2) { |
487 | /*we have statistic in different place, then usual*/ |
488 | uspi->cs_total.cs_ndir = fs64_to_cpu(sbp: sb, n: usb2->fs_un.fs_u2.cs_ndir); |
489 | uspi->cs_total.cs_nbfree = fs64_to_cpu(sbp: sb, n: usb2->fs_un.fs_u2.cs_nbfree); |
490 | uspi->cs_total.cs_nifree = fs64_to_cpu(sbp: sb, n: usb3->fs_un1.fs_u2.cs_nifree); |
491 | uspi->cs_total.cs_nffree = fs64_to_cpu(sbp: sb, n: usb3->fs_un1.fs_u2.cs_nffree); |
492 | } else { |
493 | uspi->cs_total.cs_ndir = fs32_to_cpu(sbp: sb, n: usb1->fs_cstotal.cs_ndir); |
494 | uspi->cs_total.cs_nbfree = fs32_to_cpu(sbp: sb, n: usb1->fs_cstotal.cs_nbfree); |
495 | uspi->cs_total.cs_nifree = fs32_to_cpu(sbp: sb, n: usb1->fs_cstotal.cs_nifree); |
496 | uspi->cs_total.cs_nffree = fs32_to_cpu(sbp: sb, n: usb1->fs_cstotal.cs_nffree); |
497 | } |
498 | UFSD("EXIT\n" ); |
499 | } |
500 | |
501 | /* |
502 | * Read on-disk structures associated with cylinder groups |
503 | */ |
504 | static int ufs_read_cylinder_structures(struct super_block *sb) |
505 | { |
506 | struct ufs_sb_info *sbi = UFS_SB(sb); |
507 | struct ufs_sb_private_info *uspi = sbi->s_uspi; |
508 | struct ufs_buffer_head * ubh; |
509 | unsigned char * base, * space; |
510 | unsigned size, blks, i; |
511 | |
512 | UFSD("ENTER\n" ); |
513 | |
514 | /* |
515 | * Read cs structures from (usually) first data block |
516 | * on the device. |
517 | */ |
518 | size = uspi->s_cssize; |
519 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; |
520 | base = space = kmalloc(size, GFP_NOFS); |
521 | if (!base) |
522 | goto failed; |
523 | sbi->s_csp = (struct ufs_csum *)space; |
524 | for (i = 0; i < blks; i += uspi->s_fpb) { |
525 | size = uspi->s_bsize; |
526 | if (i + uspi->s_fpb > blks) |
527 | size = (blks - i) * uspi->s_fsize; |
528 | |
529 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
530 | |
531 | if (!ubh) |
532 | goto failed; |
533 | |
534 | ubh_ubhcpymem (space, ubh, size); |
535 | |
536 | space += size; |
537 | ubh_brelse (ubh); |
538 | ubh = NULL; |
539 | } |
540 | |
541 | /* |
542 | * Read cylinder group (we read only first fragment from block |
543 | * at this time) and prepare internal data structures for cg caching. |
544 | */ |
545 | sbi->s_ucg = kmalloc_array(n: uspi->s_ncg, size: sizeof(struct buffer_head *), |
546 | GFP_NOFS); |
547 | if (!sbi->s_ucg) |
548 | goto failed; |
549 | for (i = 0; i < uspi->s_ncg; i++) |
550 | sbi->s_ucg[i] = NULL; |
551 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { |
552 | sbi->s_ucpi[i] = NULL; |
553 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; |
554 | } |
555 | for (i = 0; i < uspi->s_ncg; i++) { |
556 | UFSD("read cg %u\n" , i); |
557 | if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) |
558 | goto failed; |
559 | if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) |
560 | goto failed; |
561 | |
562 | ufs_print_cylinder_stuff(sb, cg: (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); |
563 | } |
564 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { |
565 | if (!(sbi->s_ucpi[i] = kmalloc (size: sizeof(struct ufs_cg_private_info), GFP_NOFS))) |
566 | goto failed; |
567 | sbi->s_cgno[i] = UFS_CGNO_EMPTY; |
568 | } |
569 | sbi->s_cg_loaded = 0; |
570 | UFSD("EXIT\n" ); |
571 | return 1; |
572 | |
573 | failed: |
574 | kfree (objp: base); |
575 | if (sbi->s_ucg) { |
576 | for (i = 0; i < uspi->s_ncg; i++) |
577 | if (sbi->s_ucg[i]) |
578 | brelse (bh: sbi->s_ucg[i]); |
579 | kfree (objp: sbi->s_ucg); |
580 | for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) |
581 | kfree (objp: sbi->s_ucpi[i]); |
582 | } |
583 | UFSD("EXIT (FAILED)\n" ); |
584 | return 0; |
585 | } |
586 | |
587 | /* |
588 | * Sync our internal copy of fs_cstotal with disk |
589 | */ |
590 | static void ufs_put_cstotal(struct super_block *sb) |
591 | { |
592 | unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
593 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
594 | struct ufs_super_block_first *usb1; |
595 | struct ufs_super_block_second *usb2; |
596 | struct ufs_super_block_third *usb3; |
597 | |
598 | UFSD("ENTER\n" ); |
599 | usb1 = ubh_get_usb_first(uspi); |
600 | usb2 = ubh_get_usb_second(uspi); |
601 | usb3 = ubh_get_usb_third(uspi); |
602 | |
603 | if (mtype == UFS_MOUNT_UFSTYPE_UFS2) { |
604 | /*we have statistic in different place, then usual*/ |
605 | usb2->fs_un.fs_u2.cs_ndir = |
606 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_ndir); |
607 | usb2->fs_un.fs_u2.cs_nbfree = |
608 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_nbfree); |
609 | usb3->fs_un1.fs_u2.cs_nifree = |
610 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_nifree); |
611 | usb3->fs_un1.fs_u2.cs_nffree = |
612 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_nffree); |
613 | goto out; |
614 | } |
615 | |
616 | if (mtype == UFS_MOUNT_UFSTYPE_44BSD && |
617 | (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) { |
618 | /* store stats in both old and new places */ |
619 | usb2->fs_un.fs_u2.cs_ndir = |
620 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_ndir); |
621 | usb2->fs_un.fs_u2.cs_nbfree = |
622 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_nbfree); |
623 | usb3->fs_un1.fs_u2.cs_nifree = |
624 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_nifree); |
625 | usb3->fs_un1.fs_u2.cs_nffree = |
626 | cpu_to_fs64(sbp: sb, n: uspi->cs_total.cs_nffree); |
627 | } |
628 | usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sbp: sb, n: uspi->cs_total.cs_ndir); |
629 | usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sbp: sb, n: uspi->cs_total.cs_nbfree); |
630 | usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sbp: sb, n: uspi->cs_total.cs_nifree); |
631 | usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sbp: sb, n: uspi->cs_total.cs_nffree); |
632 | out: |
633 | ubh_mark_buffer_dirty(USPI_UBH(spi: uspi)); |
634 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
635 | UFSD("EXIT\n" ); |
636 | } |
637 | |
638 | /** |
639 | * ufs_put_super_internal() - put on-disk intrenal structures |
640 | * @sb: pointer to super_block structure |
641 | * Put on-disk structures associated with cylinder groups |
642 | * and write them back to disk, also update cs_total on disk |
643 | */ |
644 | static void ufs_put_super_internal(struct super_block *sb) |
645 | { |
646 | struct ufs_sb_info *sbi = UFS_SB(sb); |
647 | struct ufs_sb_private_info *uspi = sbi->s_uspi; |
648 | struct ufs_buffer_head * ubh; |
649 | unsigned char * base, * space; |
650 | unsigned blks, size, i; |
651 | |
652 | |
653 | UFSD("ENTER\n" ); |
654 | |
655 | ufs_put_cstotal(sb); |
656 | size = uspi->s_cssize; |
657 | blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; |
658 | base = space = (char*) sbi->s_csp; |
659 | for (i = 0; i < blks; i += uspi->s_fpb) { |
660 | size = uspi->s_bsize; |
661 | if (i + uspi->s_fpb > blks) |
662 | size = (blks - i) * uspi->s_fsize; |
663 | |
664 | ubh = ubh_bread(sb, uspi->s_csaddr + i, size); |
665 | |
666 | ubh_memcpyubh (ubh, space, size); |
667 | space += size; |
668 | ubh_mark_buffer_uptodate (ubh, 1); |
669 | ubh_mark_buffer_dirty (ubh); |
670 | ubh_brelse (ubh); |
671 | } |
672 | for (i = 0; i < sbi->s_cg_loaded; i++) { |
673 | ufs_put_cylinder (sb, i); |
674 | kfree (objp: sbi->s_ucpi[i]); |
675 | } |
676 | for (; i < UFS_MAX_GROUP_LOADED; i++) |
677 | kfree (objp: sbi->s_ucpi[i]); |
678 | for (i = 0; i < uspi->s_ncg; i++) |
679 | brelse (bh: sbi->s_ucg[i]); |
680 | kfree (objp: sbi->s_ucg); |
681 | kfree (objp: base); |
682 | |
683 | UFSD("EXIT\n" ); |
684 | } |
685 | |
686 | static int ufs_sync_fs(struct super_block *sb, int wait) |
687 | { |
688 | struct ufs_sb_private_info * uspi; |
689 | struct ufs_super_block_first * usb1; |
690 | struct ufs_super_block_third * usb3; |
691 | unsigned flags; |
692 | |
693 | mutex_lock(&UFS_SB(sb)->s_lock); |
694 | |
695 | UFSD("ENTER\n" ); |
696 | |
697 | flags = UFS_SB(sb)->s_flags; |
698 | uspi = UFS_SB(sb)->s_uspi; |
699 | usb1 = ubh_get_usb_first(uspi); |
700 | usb3 = ubh_get_usb_third(uspi); |
701 | |
702 | usb1->fs_time = ufs_get_seconds(sbp: sb); |
703 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN || |
704 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || |
705 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
706 | ufs_set_fs_state(sb, usb1, usb3, |
707 | UFS_FSOK - fs32_to_cpu(sbp: sb, n: usb1->fs_time)); |
708 | ufs_put_cstotal(sb); |
709 | |
710 | UFSD("EXIT\n" ); |
711 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
712 | |
713 | return 0; |
714 | } |
715 | |
716 | static void delayed_sync_fs(struct work_struct *work) |
717 | { |
718 | struct ufs_sb_info *sbi; |
719 | |
720 | sbi = container_of(work, struct ufs_sb_info, sync_work.work); |
721 | |
722 | spin_lock(lock: &sbi->work_lock); |
723 | sbi->work_queued = 0; |
724 | spin_unlock(lock: &sbi->work_lock); |
725 | |
726 | ufs_sync_fs(sb: sbi->sb, wait: 1); |
727 | } |
728 | |
729 | void ufs_mark_sb_dirty(struct super_block *sb) |
730 | { |
731 | struct ufs_sb_info *sbi = UFS_SB(sb); |
732 | unsigned long delay; |
733 | |
734 | spin_lock(lock: &sbi->work_lock); |
735 | if (!sbi->work_queued) { |
736 | delay = msecs_to_jiffies(m: dirty_writeback_interval * 10); |
737 | queue_delayed_work(wq: system_long_wq, dwork: &sbi->sync_work, delay); |
738 | sbi->work_queued = 1; |
739 | } |
740 | spin_unlock(lock: &sbi->work_lock); |
741 | } |
742 | |
743 | static void ufs_put_super(struct super_block *sb) |
744 | { |
745 | struct ufs_sb_info * sbi = UFS_SB(sb); |
746 | |
747 | UFSD("ENTER\n" ); |
748 | |
749 | if (!sb_rdonly(sb)) |
750 | ufs_put_super_internal(sb); |
751 | cancel_delayed_work_sync(dwork: &sbi->sync_work); |
752 | |
753 | ubh_brelse_uspi (sbi->s_uspi); |
754 | kfree (objp: sbi->s_uspi); |
755 | kfree (objp: sbi); |
756 | sb->s_fs_info = NULL; |
757 | UFSD("EXIT\n" ); |
758 | return; |
759 | } |
760 | |
761 | static u64 ufs_max_bytes(struct super_block *sb) |
762 | { |
763 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
764 | int bits = uspi->s_apbshift; |
765 | u64 res; |
766 | |
767 | if (bits > 21) |
768 | res = ~0ULL; |
769 | else |
770 | res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) + |
771 | (1LL << (3*bits)); |
772 | |
773 | if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift)) |
774 | return MAX_LFS_FILESIZE; |
775 | return res << uspi->s_bshift; |
776 | } |
777 | |
778 | static int ufs_fill_super(struct super_block *sb, void *data, int silent) |
779 | { |
780 | struct ufs_sb_info * sbi; |
781 | struct ufs_sb_private_info * uspi; |
782 | struct ufs_super_block_first * usb1; |
783 | struct ufs_super_block_second * usb2; |
784 | struct ufs_super_block_third * usb3; |
785 | struct ufs_buffer_head * ubh; |
786 | struct inode *inode; |
787 | unsigned block_size, super_block_size; |
788 | unsigned flags; |
789 | unsigned super_block_offset; |
790 | unsigned maxsymlen; |
791 | int ret = -EINVAL; |
792 | |
793 | uspi = NULL; |
794 | ubh = NULL; |
795 | flags = 0; |
796 | |
797 | UFSD("ENTER\n" ); |
798 | |
799 | #ifndef CONFIG_UFS_FS_WRITE |
800 | if (!sb_rdonly(sb)) { |
801 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n" ); |
802 | return -EROFS; |
803 | } |
804 | #endif |
805 | |
806 | sbi = kzalloc(size: sizeof(struct ufs_sb_info), GFP_KERNEL); |
807 | if (!sbi) |
808 | goto failed_nomem; |
809 | sb->s_fs_info = sbi; |
810 | sbi->sb = sb; |
811 | |
812 | UFSD("flag %u\n" , (int)(sb_rdonly(sb))); |
813 | |
814 | mutex_init(&sbi->s_lock); |
815 | spin_lock_init(&sbi->work_lock); |
816 | INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); |
817 | /* |
818 | * Set default mount options |
819 | * Parse mount options |
820 | */ |
821 | sbi->s_mount_opt = 0; |
822 | ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); |
823 | if (!ufs_parse_options (options: (char *) data, mount_options: &sbi->s_mount_opt)) { |
824 | pr_err("wrong mount options\n" ); |
825 | goto failed; |
826 | } |
827 | if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { |
828 | if (!silent) |
829 | pr_err("You didn't specify the type of your ufs filesystem\n\n" |
830 | "mount -t ufs -o ufstype=" |
831 | "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" |
832 | ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " |
833 | "default is ufstype=old\n" ); |
834 | ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); |
835 | } |
836 | |
837 | uspi = kzalloc(size: sizeof(struct ufs_sb_private_info), GFP_KERNEL); |
838 | sbi->s_uspi = uspi; |
839 | if (!uspi) |
840 | goto failed; |
841 | uspi->s_dirblksize = UFS_SECTOR_SIZE; |
842 | super_block_offset=UFS_SBLOCK; |
843 | |
844 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
845 | |
846 | sb->s_time_gran = NSEC_PER_SEC; |
847 | sb->s_time_min = S32_MIN; |
848 | sb->s_time_max = S32_MAX; |
849 | |
850 | switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
851 | case UFS_MOUNT_UFSTYPE_44BSD: |
852 | UFSD("ufstype=44bsd\n" ); |
853 | uspi->s_fsize = block_size = 512; |
854 | uspi->s_fmask = ~(512 - 1); |
855 | uspi->s_fshift = 9; |
856 | uspi->s_sbsize = super_block_size = 1536; |
857 | uspi->s_sbbase = 0; |
858 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
859 | break; |
860 | case UFS_MOUNT_UFSTYPE_UFS2: |
861 | UFSD("ufstype=ufs2\n" ); |
862 | super_block_offset=SBLOCK_UFS2; |
863 | uspi->s_fsize = block_size = 512; |
864 | uspi->s_fmask = ~(512 - 1); |
865 | uspi->s_fshift = 9; |
866 | uspi->s_sbsize = super_block_size = 1536; |
867 | uspi->s_sbbase = 0; |
868 | sb->s_time_gran = 1; |
869 | sb->s_time_min = S64_MIN; |
870 | sb->s_time_max = S64_MAX; |
871 | flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
872 | break; |
873 | |
874 | case UFS_MOUNT_UFSTYPE_SUN: |
875 | UFSD("ufstype=sun\n" ); |
876 | uspi->s_fsize = block_size = 1024; |
877 | uspi->s_fmask = ~(1024 - 1); |
878 | uspi->s_fshift = 10; |
879 | uspi->s_sbsize = super_block_size = 2048; |
880 | uspi->s_sbbase = 0; |
881 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
882 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; |
883 | break; |
884 | |
885 | case UFS_MOUNT_UFSTYPE_SUNOS: |
886 | UFSD("ufstype=sunos\n" ); |
887 | uspi->s_fsize = block_size = 1024; |
888 | uspi->s_fmask = ~(1024 - 1); |
889 | uspi->s_fshift = 10; |
890 | uspi->s_sbsize = 2048; |
891 | super_block_size = 2048; |
892 | uspi->s_sbbase = 0; |
893 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
894 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; |
895 | break; |
896 | |
897 | case UFS_MOUNT_UFSTYPE_SUNx86: |
898 | UFSD("ufstype=sunx86\n" ); |
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 | uspi->s_maxsymlinklen = 0; /* Not supported on disk */ |
905 | flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; |
906 | break; |
907 | |
908 | case UFS_MOUNT_UFSTYPE_OLD: |
909 | UFSD("ufstype=old\n" ); |
910 | uspi->s_fsize = block_size = 1024; |
911 | uspi->s_fmask = ~(1024 - 1); |
912 | uspi->s_fshift = 10; |
913 | uspi->s_sbsize = super_block_size = 2048; |
914 | uspi->s_sbbase = 0; |
915 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
916 | if (!sb_rdonly(sb)) { |
917 | if (!silent) |
918 | pr_info("ufstype=old is supported read-only\n" ); |
919 | sb->s_flags |= SB_RDONLY; |
920 | } |
921 | break; |
922 | |
923 | case UFS_MOUNT_UFSTYPE_NEXTSTEP: |
924 | UFSD("ufstype=nextstep\n" ); |
925 | uspi->s_fsize = block_size = 1024; |
926 | uspi->s_fmask = ~(1024 - 1); |
927 | uspi->s_fshift = 10; |
928 | uspi->s_sbsize = super_block_size = 2048; |
929 | uspi->s_sbbase = 0; |
930 | uspi->s_dirblksize = 1024; |
931 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
932 | if (!sb_rdonly(sb)) { |
933 | if (!silent) |
934 | pr_info("ufstype=nextstep is supported read-only\n" ); |
935 | sb->s_flags |= SB_RDONLY; |
936 | } |
937 | break; |
938 | |
939 | case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: |
940 | UFSD("ufstype=nextstep-cd\n" ); |
941 | uspi->s_fsize = block_size = 2048; |
942 | uspi->s_fmask = ~(2048 - 1); |
943 | uspi->s_fshift = 11; |
944 | uspi->s_sbsize = super_block_size = 2048; |
945 | uspi->s_sbbase = 0; |
946 | uspi->s_dirblksize = 1024; |
947 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
948 | if (!sb_rdonly(sb)) { |
949 | if (!silent) |
950 | pr_info("ufstype=nextstep-cd is supported read-only\n" ); |
951 | sb->s_flags |= SB_RDONLY; |
952 | } |
953 | break; |
954 | |
955 | case UFS_MOUNT_UFSTYPE_OPENSTEP: |
956 | UFSD("ufstype=openstep\n" ); |
957 | uspi->s_fsize = block_size = 1024; |
958 | uspi->s_fmask = ~(1024 - 1); |
959 | uspi->s_fshift = 10; |
960 | uspi->s_sbsize = super_block_size = 2048; |
961 | uspi->s_sbbase = 0; |
962 | uspi->s_dirblksize = 1024; |
963 | flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
964 | if (!sb_rdonly(sb)) { |
965 | if (!silent) |
966 | pr_info("ufstype=openstep is supported read-only\n" ); |
967 | sb->s_flags |= SB_RDONLY; |
968 | } |
969 | break; |
970 | |
971 | case UFS_MOUNT_UFSTYPE_HP: |
972 | UFSD("ufstype=hp\n" ); |
973 | uspi->s_fsize = block_size = 1024; |
974 | uspi->s_fmask = ~(1024 - 1); |
975 | uspi->s_fshift = 10; |
976 | uspi->s_sbsize = super_block_size = 2048; |
977 | uspi->s_sbbase = 0; |
978 | flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
979 | if (!sb_rdonly(sb)) { |
980 | if (!silent) |
981 | pr_info("ufstype=hp is supported read-only\n" ); |
982 | sb->s_flags |= SB_RDONLY; |
983 | } |
984 | break; |
985 | default: |
986 | if (!silent) |
987 | pr_err("unknown ufstype\n" ); |
988 | goto failed; |
989 | } |
990 | |
991 | again: |
992 | if (!sb_set_blocksize(sb, block_size)) { |
993 | pr_err("failed to set blocksize\n" ); |
994 | goto failed; |
995 | } |
996 | |
997 | /* |
998 | * read ufs super block from device |
999 | */ |
1000 | |
1001 | ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); |
1002 | |
1003 | if (!ubh) |
1004 | goto failed; |
1005 | |
1006 | usb1 = ubh_get_usb_first(uspi); |
1007 | usb2 = ubh_get_usb_second(uspi); |
1008 | usb3 = ubh_get_usb_third(uspi); |
1009 | |
1010 | /* Sort out mod used on SunOS 4.1.3 for fs_state */ |
1011 | uspi->s_postblformat = fs32_to_cpu(sbp: sb, n: usb3->fs_postblformat); |
1012 | if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && |
1013 | (uspi->s_postblformat != UFS_42POSTBLFMT)) { |
1014 | flags &= ~UFS_ST_MASK; |
1015 | flags |= UFS_ST_SUN; |
1016 | } |
1017 | |
1018 | if ((flags & UFS_ST_MASK) == UFS_ST_44BSD && |
1019 | uspi->s_postblformat == UFS_42POSTBLFMT) { |
1020 | if (!silent) |
1021 | pr_err("this is not a 44bsd filesystem" ); |
1022 | goto failed; |
1023 | } |
1024 | |
1025 | /* |
1026 | * Check ufs magic number |
1027 | */ |
1028 | sbi->s_bytesex = BYTESEX_LE; |
1029 | switch ((uspi->fs_magic = fs32_to_cpu(sbp: sb, n: usb3->fs_magic))) { |
1030 | case UFS_MAGIC: |
1031 | case UFS_MAGIC_BW: |
1032 | case UFS2_MAGIC: |
1033 | case UFS_MAGIC_LFN: |
1034 | case UFS_MAGIC_FEA: |
1035 | case UFS_MAGIC_4GB: |
1036 | goto magic_found; |
1037 | } |
1038 | sbi->s_bytesex = BYTESEX_BE; |
1039 | switch ((uspi->fs_magic = fs32_to_cpu(sbp: sb, n: usb3->fs_magic))) { |
1040 | case UFS_MAGIC: |
1041 | case UFS_MAGIC_BW: |
1042 | case UFS2_MAGIC: |
1043 | case UFS_MAGIC_LFN: |
1044 | case UFS_MAGIC_FEA: |
1045 | case UFS_MAGIC_4GB: |
1046 | goto magic_found; |
1047 | } |
1048 | |
1049 | if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) |
1050 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) |
1051 | || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) |
1052 | && uspi->s_sbbase < 256) { |
1053 | ubh_brelse_uspi(uspi); |
1054 | ubh = NULL; |
1055 | uspi->s_sbbase += 8; |
1056 | goto again; |
1057 | } |
1058 | if (!silent) |
1059 | pr_err("%s(): bad magic number\n" , __func__); |
1060 | goto failed; |
1061 | |
1062 | magic_found: |
1063 | /* |
1064 | * Check block and fragment sizes |
1065 | */ |
1066 | uspi->s_bsize = fs32_to_cpu(sbp: sb, n: usb1->fs_bsize); |
1067 | uspi->s_fsize = fs32_to_cpu(sbp: sb, n: usb1->fs_fsize); |
1068 | uspi->s_sbsize = fs32_to_cpu(sbp: sb, n: usb1->fs_sbsize); |
1069 | uspi->s_fmask = fs32_to_cpu(sbp: sb, n: usb1->fs_fmask); |
1070 | uspi->s_fshift = fs32_to_cpu(sbp: sb, n: usb1->fs_fshift); |
1071 | |
1072 | if (!is_power_of_2(n: uspi->s_fsize)) { |
1073 | pr_err("%s(): fragment size %u is not a power of 2\n" , |
1074 | __func__, uspi->s_fsize); |
1075 | goto failed; |
1076 | } |
1077 | if (uspi->s_fsize < 512) { |
1078 | pr_err("%s(): fragment size %u is too small\n" , |
1079 | __func__, uspi->s_fsize); |
1080 | goto failed; |
1081 | } |
1082 | if (uspi->s_fsize > 4096) { |
1083 | pr_err("%s(): fragment size %u is too large\n" , |
1084 | __func__, uspi->s_fsize); |
1085 | goto failed; |
1086 | } |
1087 | if (!is_power_of_2(n: uspi->s_bsize)) { |
1088 | pr_err("%s(): block size %u is not a power of 2\n" , |
1089 | __func__, uspi->s_bsize); |
1090 | goto failed; |
1091 | } |
1092 | if (uspi->s_bsize < 4096) { |
1093 | pr_err("%s(): block size %u is too small\n" , |
1094 | __func__, uspi->s_bsize); |
1095 | goto failed; |
1096 | } |
1097 | if (uspi->s_bsize / uspi->s_fsize > 8) { |
1098 | pr_err("%s(): too many fragments per block (%u)\n" , |
1099 | __func__, uspi->s_bsize / uspi->s_fsize); |
1100 | goto failed; |
1101 | } |
1102 | if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { |
1103 | ubh_brelse_uspi(uspi); |
1104 | ubh = NULL; |
1105 | block_size = uspi->s_fsize; |
1106 | super_block_size = uspi->s_sbsize; |
1107 | UFSD("another value of block_size or super_block_size %u, %u\n" , block_size, super_block_size); |
1108 | goto again; |
1109 | } |
1110 | |
1111 | sbi->s_flags = flags;/*after that line some functions use s_flags*/ |
1112 | ufs_print_super_stuff(sb, usb1, usb2, usb3); |
1113 | |
1114 | /* |
1115 | * Check, if file system was correctly unmounted. |
1116 | * If not, make it read only. |
1117 | */ |
1118 | if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || |
1119 | ((flags & UFS_ST_MASK) == UFS_ST_OLD) || |
1120 | (((flags & UFS_ST_MASK) == UFS_ST_SUN || |
1121 | (flags & UFS_ST_MASK) == UFS_ST_SUNOS || |
1122 | (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && |
1123 | (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sbp: sb, n: usb1->fs_time))))) { |
1124 | switch(usb1->fs_clean) { |
1125 | case UFS_FSCLEAN: |
1126 | UFSD("fs is clean\n" ); |
1127 | break; |
1128 | case UFS_FSSTABLE: |
1129 | UFSD("fs is stable\n" ); |
1130 | break; |
1131 | case UFS_FSLOG: |
1132 | UFSD("fs is logging fs\n" ); |
1133 | break; |
1134 | case UFS_FSOSF1: |
1135 | UFSD("fs is DEC OSF/1\n" ); |
1136 | break; |
1137 | case UFS_FSACTIVE: |
1138 | pr_err("%s(): fs is active\n" , __func__); |
1139 | sb->s_flags |= SB_RDONLY; |
1140 | break; |
1141 | case UFS_FSBAD: |
1142 | pr_err("%s(): fs is bad\n" , __func__); |
1143 | sb->s_flags |= SB_RDONLY; |
1144 | break; |
1145 | default: |
1146 | pr_err("%s(): can't grok fs_clean 0x%x\n" , |
1147 | __func__, usb1->fs_clean); |
1148 | sb->s_flags |= SB_RDONLY; |
1149 | break; |
1150 | } |
1151 | } else { |
1152 | pr_err("%s(): fs needs fsck\n" , __func__); |
1153 | sb->s_flags |= SB_RDONLY; |
1154 | } |
1155 | |
1156 | /* |
1157 | * Read ufs_super_block into internal data structures |
1158 | */ |
1159 | sb->s_op = &ufs_super_ops; |
1160 | sb->s_export_op = &ufs_export_ops; |
1161 | |
1162 | sb->s_magic = fs32_to_cpu(sbp: sb, n: usb3->fs_magic); |
1163 | |
1164 | uspi->s_sblkno = fs32_to_cpu(sbp: sb, n: usb1->fs_sblkno); |
1165 | uspi->s_cblkno = fs32_to_cpu(sbp: sb, n: usb1->fs_cblkno); |
1166 | uspi->s_iblkno = fs32_to_cpu(sbp: sb, n: usb1->fs_iblkno); |
1167 | uspi->s_dblkno = fs32_to_cpu(sbp: sb, n: usb1->fs_dblkno); |
1168 | uspi->s_cgoffset = fs32_to_cpu(sbp: sb, n: usb1->fs_cgoffset); |
1169 | uspi->s_cgmask = fs32_to_cpu(sbp: sb, n: usb1->fs_cgmask); |
1170 | |
1171 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
1172 | uspi->s_size = fs64_to_cpu(sbp: sb, n: usb3->fs_un1.fs_u2.fs_size); |
1173 | uspi->s_dsize = fs64_to_cpu(sbp: sb, n: usb3->fs_un1.fs_u2.fs_dsize); |
1174 | } else { |
1175 | uspi->s_size = fs32_to_cpu(sbp: sb, n: usb1->fs_size); |
1176 | uspi->s_dsize = fs32_to_cpu(sbp: sb, n: usb1->fs_dsize); |
1177 | } |
1178 | |
1179 | uspi->s_ncg = fs32_to_cpu(sbp: sb, n: usb1->fs_ncg); |
1180 | /* s_bsize already set */ |
1181 | /* s_fsize already set */ |
1182 | uspi->s_fpb = fs32_to_cpu(sbp: sb, n: usb1->fs_frag); |
1183 | uspi->s_minfree = fs32_to_cpu(sbp: sb, n: usb1->fs_minfree); |
1184 | uspi->s_bmask = fs32_to_cpu(sbp: sb, n: usb1->fs_bmask); |
1185 | uspi->s_fmask = fs32_to_cpu(sbp: sb, n: usb1->fs_fmask); |
1186 | uspi->s_bshift = fs32_to_cpu(sbp: sb, n: usb1->fs_bshift); |
1187 | uspi->s_fshift = fs32_to_cpu(sbp: sb, n: usb1->fs_fshift); |
1188 | UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d" , uspi->s_bshift, |
1189 | uspi->s_fshift); |
1190 | uspi->s_fpbshift = fs32_to_cpu(sbp: sb, n: usb1->fs_fragshift); |
1191 | uspi->s_fsbtodb = fs32_to_cpu(sbp: sb, n: usb1->fs_fsbtodb); |
1192 | /* s_sbsize already set */ |
1193 | uspi->s_csmask = fs32_to_cpu(sbp: sb, n: usb1->fs_csmask); |
1194 | uspi->s_csshift = fs32_to_cpu(sbp: sb, n: usb1->fs_csshift); |
1195 | uspi->s_nindir = fs32_to_cpu(sbp: sb, n: usb1->fs_nindir); |
1196 | uspi->s_inopb = fs32_to_cpu(sbp: sb, n: usb1->fs_inopb); |
1197 | uspi->s_nspf = fs32_to_cpu(sbp: sb, n: usb1->fs_nspf); |
1198 | uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); |
1199 | uspi->s_interleave = fs32_to_cpu(sbp: sb, n: usb1->fs_interleave); |
1200 | uspi->s_trackskew = fs32_to_cpu(sbp: sb, n: usb1->fs_trackskew); |
1201 | |
1202 | if (uspi->fs_magic == UFS2_MAGIC) |
1203 | uspi->s_csaddr = fs64_to_cpu(sbp: sb, n: usb3->fs_un1.fs_u2.fs_csaddr); |
1204 | else |
1205 | uspi->s_csaddr = fs32_to_cpu(sbp: sb, n: usb1->fs_csaddr); |
1206 | |
1207 | uspi->s_cssize = fs32_to_cpu(sbp: sb, n: usb1->fs_cssize); |
1208 | uspi->s_cgsize = fs32_to_cpu(sbp: sb, n: usb1->fs_cgsize); |
1209 | uspi->s_ntrak = fs32_to_cpu(sbp: sb, n: usb1->fs_ntrak); |
1210 | uspi->s_nsect = fs32_to_cpu(sbp: sb, n: usb1->fs_nsect); |
1211 | uspi->s_spc = fs32_to_cpu(sbp: sb, n: usb1->fs_spc); |
1212 | uspi->s_ipg = fs32_to_cpu(sbp: sb, n: usb1->fs_ipg); |
1213 | uspi->s_fpg = fs32_to_cpu(sbp: sb, n: usb1->fs_fpg); |
1214 | uspi->s_cpc = fs32_to_cpu(sbp: sb, n: usb2->fs_un.fs_u1.fs_cpc); |
1215 | uspi->s_contigsumsize = fs32_to_cpu(sbp: sb, n: usb3->fs_un2.fs_44.fs_contigsumsize); |
1216 | uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); |
1217 | uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); |
1218 | uspi->s_nrpos = fs32_to_cpu(sbp: sb, n: usb3->fs_nrpos); |
1219 | uspi->s_postbloff = fs32_to_cpu(sbp: sb, n: usb3->fs_postbloff); |
1220 | uspi->s_rotbloff = fs32_to_cpu(sbp: sb, n: usb3->fs_rotbloff); |
1221 | |
1222 | uspi->s_root_blocks = mul_u64_u32_div(a: uspi->s_dsize, |
1223 | mul: uspi->s_minfree, div: 100); |
1224 | if (uspi->s_minfree <= 5) { |
1225 | uspi->s_time_to_space = ~0ULL; |
1226 | uspi->s_space_to_time = 0; |
1227 | usb1->fs_optim = cpu_to_fs32(sbp: sb, UFS_OPTSPACE); |
1228 | } else { |
1229 | uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1; |
1230 | uspi->s_space_to_time = mul_u64_u32_div(a: uspi->s_dsize, |
1231 | mul: uspi->s_minfree - 2, div: 100) - 1; |
1232 | } |
1233 | |
1234 | /* |
1235 | * Compute another frequently used values |
1236 | */ |
1237 | uspi->s_fpbmask = uspi->s_fpb - 1; |
1238 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1239 | uspi->s_apbshift = uspi->s_bshift - 3; |
1240 | else |
1241 | uspi->s_apbshift = uspi->s_bshift - 2; |
1242 | |
1243 | uspi->s_2apbshift = uspi->s_apbshift * 2; |
1244 | uspi->s_3apbshift = uspi->s_apbshift * 3; |
1245 | uspi->s_apb = 1 << uspi->s_apbshift; |
1246 | uspi->s_2apb = 1 << uspi->s_2apbshift; |
1247 | uspi->s_3apb = 1 << uspi->s_3apbshift; |
1248 | uspi->s_apbmask = uspi->s_apb - 1; |
1249 | uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; |
1250 | uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; |
1251 | uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; |
1252 | uspi->s_bpf = uspi->s_fsize << 3; |
1253 | uspi->s_bpfshift = uspi->s_fshift + 3; |
1254 | uspi->s_bpfmask = uspi->s_bpf - 1; |
1255 | if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || |
1256 | (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) |
1257 | uspi->s_maxsymlinklen = |
1258 | fs32_to_cpu(sbp: sb, n: usb3->fs_un2.fs_44.fs_maxsymlinklen); |
1259 | |
1260 | if (uspi->fs_magic == UFS2_MAGIC) |
1261 | maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); |
1262 | else |
1263 | maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); |
1264 | if (uspi->s_maxsymlinklen > maxsymlen) { |
1265 | ufs_warning(sb, function: __func__, fmt: "ufs_read_super: excessive maximum " |
1266 | "fast symlink size (%u)\n" , uspi->s_maxsymlinklen); |
1267 | uspi->s_maxsymlinklen = maxsymlen; |
1268 | } |
1269 | sb->s_maxbytes = ufs_max_bytes(sb); |
1270 | sb->s_max_links = UFS_LINK_MAX; |
1271 | |
1272 | inode = ufs_iget(sb, UFS_ROOTINO); |
1273 | if (IS_ERR(ptr: inode)) { |
1274 | ret = PTR_ERR(ptr: inode); |
1275 | goto failed; |
1276 | } |
1277 | sb->s_root = d_make_root(inode); |
1278 | if (!sb->s_root) { |
1279 | ret = -ENOMEM; |
1280 | goto failed; |
1281 | } |
1282 | |
1283 | ufs_setup_cstotal(sb); |
1284 | /* |
1285 | * Read cylinder group structures |
1286 | */ |
1287 | if (!sb_rdonly(sb)) |
1288 | if (!ufs_read_cylinder_structures(sb)) |
1289 | goto failed; |
1290 | |
1291 | UFSD("EXIT\n" ); |
1292 | return 0; |
1293 | |
1294 | failed: |
1295 | if (ubh) |
1296 | ubh_brelse_uspi (uspi); |
1297 | kfree (objp: uspi); |
1298 | kfree(objp: sbi); |
1299 | sb->s_fs_info = NULL; |
1300 | UFSD("EXIT (FAILED)\n" ); |
1301 | return ret; |
1302 | |
1303 | failed_nomem: |
1304 | UFSD("EXIT (NOMEM)\n" ); |
1305 | return -ENOMEM; |
1306 | } |
1307 | |
1308 | static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) |
1309 | { |
1310 | struct ufs_sb_private_info * uspi; |
1311 | struct ufs_super_block_first * usb1; |
1312 | struct ufs_super_block_third * usb3; |
1313 | unsigned new_mount_opt, ufstype; |
1314 | unsigned flags; |
1315 | |
1316 | sync_filesystem(sb); |
1317 | mutex_lock(&UFS_SB(sb)->s_lock); |
1318 | uspi = UFS_SB(sb)->s_uspi; |
1319 | flags = UFS_SB(sb)->s_flags; |
1320 | usb1 = ubh_get_usb_first(uspi); |
1321 | usb3 = ubh_get_usb_third(uspi); |
1322 | |
1323 | /* |
1324 | * Allow the "check" option to be passed as a remount option. |
1325 | * It is not possible to change ufstype option during remount |
1326 | */ |
1327 | ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; |
1328 | new_mount_opt = 0; |
1329 | ufs_set_opt (new_mount_opt, ONERROR_LOCK); |
1330 | if (!ufs_parse_options (options: data, mount_options: &new_mount_opt)) { |
1331 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1332 | return -EINVAL; |
1333 | } |
1334 | if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { |
1335 | new_mount_opt |= ufstype; |
1336 | } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
1337 | pr_err("ufstype can't be changed during remount\n" ); |
1338 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1339 | return -EINVAL; |
1340 | } |
1341 | |
1342 | if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) { |
1343 | UFS_SB(sb)->s_mount_opt = new_mount_opt; |
1344 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1345 | return 0; |
1346 | } |
1347 | |
1348 | /* |
1349 | * fs was mouted as rw, remounting ro |
1350 | */ |
1351 | if (*mount_flags & SB_RDONLY) { |
1352 | ufs_put_super_internal(sb); |
1353 | usb1->fs_time = ufs_get_seconds(sbp: sb); |
1354 | if ((flags & UFS_ST_MASK) == UFS_ST_SUN |
1355 | || (flags & UFS_ST_MASK) == UFS_ST_SUNOS |
1356 | || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) |
1357 | ufs_set_fs_state(sb, usb1, usb3, |
1358 | UFS_FSOK - fs32_to_cpu(sbp: sb, n: usb1->fs_time)); |
1359 | ubh_mark_buffer_dirty (USPI_UBH(spi: uspi)); |
1360 | sb->s_flags |= SB_RDONLY; |
1361 | } else { |
1362 | /* |
1363 | * fs was mounted as ro, remounting rw |
1364 | */ |
1365 | #ifndef CONFIG_UFS_FS_WRITE |
1366 | pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n" ); |
1367 | mutex_unlock(&UFS_SB(sb)->s_lock); |
1368 | return -EINVAL; |
1369 | #else |
1370 | if (ufstype != UFS_MOUNT_UFSTYPE_SUN && |
1371 | ufstype != UFS_MOUNT_UFSTYPE_SUNOS && |
1372 | ufstype != UFS_MOUNT_UFSTYPE_44BSD && |
1373 | ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && |
1374 | ufstype != UFS_MOUNT_UFSTYPE_UFS2) { |
1375 | pr_err("this ufstype is read-only supported\n" ); |
1376 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1377 | return -EINVAL; |
1378 | } |
1379 | if (!ufs_read_cylinder_structures(sb)) { |
1380 | pr_err("failed during remounting\n" ); |
1381 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1382 | return -EPERM; |
1383 | } |
1384 | sb->s_flags &= ~SB_RDONLY; |
1385 | #endif |
1386 | } |
1387 | UFS_SB(sb)->s_mount_opt = new_mount_opt; |
1388 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1389 | return 0; |
1390 | } |
1391 | |
1392 | static int ufs_show_options(struct seq_file *seq, struct dentry *root) |
1393 | { |
1394 | struct ufs_sb_info *sbi = UFS_SB(sb: root->d_sb); |
1395 | unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; |
1396 | const struct match_token *tp = tokens; |
1397 | |
1398 | while (tp->token != Opt_onerror_panic && tp->token != mval) |
1399 | ++tp; |
1400 | BUG_ON(tp->token == Opt_onerror_panic); |
1401 | seq_printf(m: seq, fmt: ",%s" , tp->pattern); |
1402 | |
1403 | mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR; |
1404 | while (tp->token != Opt_err && tp->token != mval) |
1405 | ++tp; |
1406 | BUG_ON(tp->token == Opt_err); |
1407 | seq_printf(m: seq, fmt: ",%s" , tp->pattern); |
1408 | |
1409 | return 0; |
1410 | } |
1411 | |
1412 | static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1413 | { |
1414 | struct super_block *sb = dentry->d_sb; |
1415 | struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; |
1416 | unsigned flags = UFS_SB(sb)->s_flags; |
1417 | u64 id = huge_encode_dev(dev: sb->s_bdev->bd_dev); |
1418 | |
1419 | mutex_lock(&UFS_SB(sb)->s_lock); |
1420 | |
1421 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
1422 | buf->f_type = UFS2_MAGIC; |
1423 | else |
1424 | buf->f_type = UFS_MAGIC; |
1425 | |
1426 | buf->f_blocks = uspi->s_dsize; |
1427 | buf->f_bfree = ufs_freefrags(uspi); |
1428 | buf->f_ffree = uspi->cs_total.cs_nifree; |
1429 | buf->f_bsize = sb->s_blocksize; |
1430 | buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks) |
1431 | ? (buf->f_bfree - uspi->s_root_blocks) : 0; |
1432 | buf->f_files = uspi->s_ncg * uspi->s_ipg; |
1433 | buf->f_namelen = UFS_MAXNAMLEN; |
1434 | buf->f_fsid = u64_to_fsid(v: id); |
1435 | |
1436 | mutex_unlock(lock: &UFS_SB(sb)->s_lock); |
1437 | |
1438 | return 0; |
1439 | } |
1440 | |
1441 | static struct kmem_cache * ufs_inode_cachep; |
1442 | |
1443 | static struct inode *ufs_alloc_inode(struct super_block *sb) |
1444 | { |
1445 | struct ufs_inode_info *ei; |
1446 | |
1447 | ei = alloc_inode_sb(sb, cache: ufs_inode_cachep, GFP_NOFS); |
1448 | if (!ei) |
1449 | return NULL; |
1450 | |
1451 | inode_set_iversion(inode: &ei->vfs_inode, val: 1); |
1452 | seqlock_init(&ei->meta_lock); |
1453 | mutex_init(&ei->truncate_mutex); |
1454 | return &ei->vfs_inode; |
1455 | } |
1456 | |
1457 | static void ufs_free_in_core_inode(struct inode *inode) |
1458 | { |
1459 | kmem_cache_free(s: ufs_inode_cachep, objp: UFS_I(inode)); |
1460 | } |
1461 | |
1462 | static void init_once(void *foo) |
1463 | { |
1464 | struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; |
1465 | |
1466 | inode_init_once(&ei->vfs_inode); |
1467 | } |
1468 | |
1469 | static int __init init_inodecache(void) |
1470 | { |
1471 | ufs_inode_cachep = kmem_cache_create_usercopy(name: "ufs_inode_cache" , |
1472 | size: sizeof(struct ufs_inode_info), align: 0, |
1473 | flags: (SLAB_RECLAIM_ACCOUNT | SLAB_ACCOUNT), |
1474 | offsetof(struct ufs_inode_info, i_u1.i_symlink), |
1475 | sizeof_field(struct ufs_inode_info, |
1476 | i_u1.i_symlink), |
1477 | ctor: init_once); |
1478 | if (ufs_inode_cachep == NULL) |
1479 | return -ENOMEM; |
1480 | return 0; |
1481 | } |
1482 | |
1483 | static void destroy_inodecache(void) |
1484 | { |
1485 | /* |
1486 | * Make sure all delayed rcu free inodes are flushed before we |
1487 | * destroy cache. |
1488 | */ |
1489 | rcu_barrier(); |
1490 | kmem_cache_destroy(s: ufs_inode_cachep); |
1491 | } |
1492 | |
1493 | static const struct super_operations ufs_super_ops = { |
1494 | .alloc_inode = ufs_alloc_inode, |
1495 | .free_inode = ufs_free_in_core_inode, |
1496 | .write_inode = ufs_write_inode, |
1497 | .evict_inode = ufs_evict_inode, |
1498 | .put_super = ufs_put_super, |
1499 | .sync_fs = ufs_sync_fs, |
1500 | .statfs = ufs_statfs, |
1501 | .remount_fs = ufs_remount, |
1502 | .show_options = ufs_show_options, |
1503 | }; |
1504 | |
1505 | static struct dentry *ufs_mount(struct file_system_type *fs_type, |
1506 | int flags, const char *dev_name, void *data) |
1507 | { |
1508 | return mount_bdev(fs_type, flags, dev_name, data, fill_super: ufs_fill_super); |
1509 | } |
1510 | |
1511 | static struct file_system_type ufs_fs_type = { |
1512 | .owner = THIS_MODULE, |
1513 | .name = "ufs" , |
1514 | .mount = ufs_mount, |
1515 | .kill_sb = kill_block_super, |
1516 | .fs_flags = FS_REQUIRES_DEV, |
1517 | }; |
1518 | MODULE_ALIAS_FS("ufs" ); |
1519 | |
1520 | static int __init init_ufs_fs(void) |
1521 | { |
1522 | int err = init_inodecache(); |
1523 | if (err) |
1524 | goto out1; |
1525 | err = register_filesystem(&ufs_fs_type); |
1526 | if (err) |
1527 | goto out; |
1528 | return 0; |
1529 | out: |
1530 | destroy_inodecache(); |
1531 | out1: |
1532 | return err; |
1533 | } |
1534 | |
1535 | static void __exit exit_ufs_fs(void) |
1536 | { |
1537 | unregister_filesystem(&ufs_fs_type); |
1538 | destroy_inodecache(); |
1539 | } |
1540 | |
1541 | module_init(init_ufs_fs) |
1542 | module_exit(exit_ufs_fs) |
1543 | MODULE_LICENSE("GPL" ); |
1544 | |