blob: 8092d3759a5e560001ad75bdb9a5238c053a8523 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Gertjan van Wingerdef762dd62009-03-21 23:18:57 +010044 * Gertjan van Wingerde <gwingerde@gmail.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 *
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 *
Evgeniy Dushistovcbcae392007-02-12 00:54:30 -080064 * UFS2 write support added by
65 * Evgeniy Dushistov <dushistov@mail.ru>, 2007
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 */
67
Alexey Dobriyanf3e2a522009-12-15 16:46:51 -080068#include <linux/exportfs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070069#include <linux/module.h>
70#include <linux/bitops.h>
71
72#include <stdarg.h>
73
74#include <asm/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
76#include <linux/errno.h>
77#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070078#include <linux/slab.h>
79#include <linux/time.h>
80#include <linux/stat.h>
81#include <linux/string.h>
82#include <linux/blkdev.h>
83#include <linux/init.h>
84#include <linux/parser.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070085#include <linux/buffer_head.h>
86#include <linux/vfs.h>
vignesh babu9e8c4272007-07-15 23:41:36 -070087#include <linux/log2.h>
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -070088#include <linux/mount.h>
89#include <linux/seq_file.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
Mike Frysingere5420592008-02-08 04:21:31 -080091#include "ufs_fs.h"
Christoph Hellwigbcd6d4e2007-10-16 23:26:51 -070092#include "ufs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070093#include "swab.h"
94#include "util.h"
95
Arnd Bergmann788257d2011-01-24 10:14:12 +010096void lock_ufs(struct super_block *sb)
97{
Arnd Bergmann788257d2011-01-24 10:14:12 +010098 struct ufs_sb_info *sbi = UFS_SB(sb);
99
100 mutex_lock(&sbi->mutex);
101 sbi->mutex_owner = current;
Arnd Bergmann788257d2011-01-24 10:14:12 +0100102}
103
104void unlock_ufs(struct super_block *sb)
105{
Arnd Bergmann788257d2011-01-24 10:14:12 +0100106 struct ufs_sb_info *sbi = UFS_SB(sb);
107
108 sbi->mutex_owner = NULL;
109 mutex_unlock(&sbi->mutex);
Arnd Bergmann788257d2011-01-24 10:14:12 +0100110}
111
Alexey Dobriyanf3e2a522009-12-15 16:46:51 -0800112static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
113{
114 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
115 struct inode *inode;
116
117 if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg)
118 return ERR_PTR(-ESTALE);
119
120 inode = ufs_iget(sb, ino);
121 if (IS_ERR(inode))
122 return ERR_CAST(inode);
123 if (generation && inode->i_generation != generation) {
124 iput(inode);
125 return ERR_PTR(-ESTALE);
126 }
127 return inode;
128}
129
130static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
131 int fh_len, int fh_type)
132{
133 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
134}
135
136static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
137 int fh_len, int fh_type)
138{
139 return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
140}
141
142static struct dentry *ufs_get_parent(struct dentry *child)
143{
Linus Torvalds26fe5752012-05-10 13:14:12 -0700144 struct qstr dot_dot = QSTR_INIT("..", 2);
Alexey Dobriyanf3e2a522009-12-15 16:46:51 -0800145 ino_t ino;
146
147 ino = ufs_inode_by_name(child->d_inode, &dot_dot);
148 if (!ino)
149 return ERR_PTR(-ENOENT);
150 return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino));
151}
152
153static const struct export_operations ufs_export_ops = {
154 .fh_to_dentry = ufs_fh_to_dentry,
155 .fh_to_parent = ufs_fh_to_parent,
156 .get_parent = ufs_get_parent,
157};
158
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700159#ifdef CONFIG_UFS_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160/*
161 * Print contents of ufs_super_block, useful for debugging
162 */
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800163static void ufs_print_super_stuff(struct super_block *sb,
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700164 struct ufs_super_block_first *usb1,
165 struct ufs_super_block_second *usb2,
166 struct ufs_super_block_third *usb3)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800168 u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
169
Fabian Fredericka9814c52014-08-08 14:20:57 -0700170 pr_debug("ufs_print_super_stuff\n");
171 pr_debug(" magic: 0x%x\n", magic);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800172 if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
Fabian Fredericka9814c52014-08-08 14:20:57 -0700173 pr_debug(" fs_size: %llu\n", (unsigned long long)
174 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
175 pr_debug(" fs_dsize: %llu\n", (unsigned long long)
176 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
177 pr_debug(" bsize: %u\n",
178 fs32_to_cpu(sb, usb1->fs_bsize));
179 pr_debug(" fsize: %u\n",
180 fs32_to_cpu(sb, usb1->fs_fsize));
181 pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
182 pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
183 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
184 pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
185 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
186 pr_debug(" cs_nbfree(No of free blocks): %llu\n",
187 (unsigned long long)
188 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
189 pr_info(" cs_nifree(Num of free inodes): %llu\n",
190 (unsigned long long)
191 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
192 pr_info(" cs_nffree(Num of free frags): %llu\n",
193 (unsigned long long)
194 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
195 pr_info(" fs_maxsymlinklen: %u\n",
196 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700197 } else {
Fabian Fredericka9814c52014-08-08 14:20:57 -0700198 pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
199 pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
200 pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
201 pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
202 pr_debug(" cgoffset: %u\n",
203 fs32_to_cpu(sb, usb1->fs_cgoffset));
204 pr_debug(" ~cgmask: 0x%x\n",
205 ~fs32_to_cpu(sb, usb1->fs_cgmask));
206 pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
207 pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
208 pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
209 pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
210 pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
211 pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
212 pr_debug(" fragshift: %u\n",
213 fs32_to_cpu(sb, usb1->fs_fragshift));
214 pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
215 pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
216 pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
217 pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
218 pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
219 pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
220 pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
221 pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
222 pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
223 pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
224 pr_debug(" fstodb: %u\n",
225 fs32_to_cpu(sb, usb1->fs_fsbtodb));
226 pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
227 pr_debug(" ndir %u\n",
228 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
229 pr_debug(" nifree %u\n",
230 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
231 pr_debug(" nbfree %u\n",
232 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
233 pr_debug(" nffree %u\n",
234 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700235 }
Fabian Fredericka9814c52014-08-08 14:20:57 -0700236 pr_debug("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237}
238
239/*
240 * Print contents of ufs_cylinder_group, useful for debugging
241 */
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700242static void ufs_print_cylinder_stuff(struct super_block *sb,
243 struct ufs_cylinder_group *cg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244{
Fabian Fredericka9814c52014-08-08 14:20:57 -0700245 pr_debug("\nufs_print_cylinder_stuff\n");
246 pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
247 pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
248 pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
249 pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
250 pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
251 pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
252 pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
253 pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
254 pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
255 pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
256 pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
257 pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
258 pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
259 pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
260 pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
262 fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
263 fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
264 fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
Fabian Fredericka9814c52014-08-08 14:20:57 -0700265 pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
266 pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
267 pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
268 pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
269 pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
270 pr_debug(" clustersumoff %u\n",
271 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
272 pr_debug(" clusteroff %u\n",
273 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
274 pr_debug(" nclusterblks %u\n",
275 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
276 pr_debug("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277}
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700278#else
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800279# define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700280# define ufs_print_cylinder_stuff(sb, cg) /**/
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700281#endif /* CONFIG_UFS_DEBUG */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -0800283static const struct super_operations ufs_super_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285void ufs_error (struct super_block * sb, const char * function,
286 const char * fmt, ...)
287{
288 struct ufs_sb_private_info * uspi;
289 struct ufs_super_block_first * usb1;
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700290 struct va_format vaf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 va_list args;
292
293 uspi = UFS_SB(sb)->s_uspi;
Evgeniy7b4ee732006-01-14 11:42:06 +0300294 usb1 = ubh_get_usb_first(uspi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
296 if (!(sb->s_flags & MS_RDONLY)) {
297 usb1->fs_clean = UFS_FSBAD;
Evgeniy Dushistov9695ef12006-06-25 05:47:22 -0700298 ubh_mark_buffer_dirty(USPI_UBH(uspi));
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300299 ufs_mark_sb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 sb->s_flags |= MS_RDONLY;
301 }
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700302 va_start(args, fmt);
303 vaf.fmt = fmt;
304 vaf.va = &args;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
306 case UFS_MOUNT_ONERROR_PANIC:
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700307 panic("panic (device %s): %s: %pV\n",
308 sb->s_id, function, &vaf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
310 case UFS_MOUNT_ONERROR_LOCK:
311 case UFS_MOUNT_ONERROR_UMOUNT:
312 case UFS_MOUNT_ONERROR_REPAIR:
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700313 pr_crit("error (device %s): %s: %pV\n",
314 sb->s_id, function, &vaf);
315 }
316 va_end(args);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317}
318
319void ufs_panic (struct super_block * sb, const char * function,
320 const char * fmt, ...)
321{
322 struct ufs_sb_private_info * uspi;
323 struct ufs_super_block_first * usb1;
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700324 struct va_format vaf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 va_list args;
326
327 uspi = UFS_SB(sb)->s_uspi;
Evgeniy7b4ee732006-01-14 11:42:06 +0300328 usb1 = ubh_get_usb_first(uspi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
330 if (!(sb->s_flags & MS_RDONLY)) {
331 usb1->fs_clean = UFS_FSBAD;
Evgeniy Dushistov9695ef12006-06-25 05:47:22 -0700332 ubh_mark_buffer_dirty(USPI_UBH(uspi));
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300333 ufs_mark_sb_dirty(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 }
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700335 va_start(args, fmt);
336 vaf.fmt = fmt;
337 vaf.va = &args;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 sb->s_flags |= MS_RDONLY;
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700339 pr_crit("panic (device %s): %s: %pV\n",
340 sb->s_id, function, &vaf);
341 va_end(args);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342}
343
344void ufs_warning (struct super_block * sb, const char * function,
345 const char * fmt, ...)
346{
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700347 struct va_format vaf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 va_list args;
349
Fabian Frederick7e1e4162014-08-08 14:21:03 -0700350 va_start(args, fmt);
351 vaf.fmt = fmt;
352 vaf.va = &args;
353 pr_warn("(device %s): %s: %pV\n",
354 sb->s_id, function, &vaf);
355 va_end(args);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356}
357
358enum {
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -0700359 Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
360 Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
361 Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
362 Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
363 Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
364 Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
365 Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
366 Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
367 Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
368 Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
369 Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
370 Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
371 Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
372 Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
373 Opt_err
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374};
375
Steven Whitehousea447c092008-10-13 10:46:57 +0100376static const match_table_t tokens = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 {Opt_type_old, "ufstype=old"},
378 {Opt_type_sunx86, "ufstype=sunx86"},
379 {Opt_type_sun, "ufstype=sun"},
Mark Fortescue252e2112007-10-16 23:26:31 -0700380 {Opt_type_sunos, "ufstype=sunos"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 {Opt_type_44bsd, "ufstype=44bsd"},
382 {Opt_type_ufs2, "ufstype=ufs2"},
383 {Opt_type_ufs2, "ufstype=5xbsd"},
384 {Opt_type_hp, "ufstype=hp"},
385 {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
386 {Opt_type_nextstep, "ufstype=nextstep"},
387 {Opt_type_openstep, "ufstype=openstep"},
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -0700388/*end of possible ufs types */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 {Opt_onerror_panic, "onerror=panic"},
390 {Opt_onerror_lock, "onerror=lock"},
391 {Opt_onerror_umount, "onerror=umount"},
392 {Opt_onerror_repair, "onerror=repair"},
393 {Opt_err, NULL}
394};
395
396static int ufs_parse_options (char * options, unsigned * mount_options)
397{
398 char * p;
399
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700400 UFSD("ENTER\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
402 if (!options)
403 return 1;
404
405 while ((p = strsep(&options, ",")) != NULL) {
406 substring_t args[MAX_OPT_ARGS];
407 int token;
408 if (!*p)
409 continue;
410
411 token = match_token(p, tokens, args);
412 switch (token) {
413 case Opt_type_old:
414 ufs_clear_opt (*mount_options, UFSTYPE);
415 ufs_set_opt (*mount_options, UFSTYPE_OLD);
416 break;
417 case Opt_type_sunx86:
418 ufs_clear_opt (*mount_options, UFSTYPE);
419 ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
420 break;
421 case Opt_type_sun:
422 ufs_clear_opt (*mount_options, UFSTYPE);
423 ufs_set_opt (*mount_options, UFSTYPE_SUN);
424 break;
Mark Fortescue252e2112007-10-16 23:26:31 -0700425 case Opt_type_sunos:
426 ufs_clear_opt(*mount_options, UFSTYPE);
427 ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
428 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 case Opt_type_44bsd:
430 ufs_clear_opt (*mount_options, UFSTYPE);
431 ufs_set_opt (*mount_options, UFSTYPE_44BSD);
432 break;
433 case Opt_type_ufs2:
434 ufs_clear_opt(*mount_options, UFSTYPE);
435 ufs_set_opt(*mount_options, UFSTYPE_UFS2);
436 break;
437 case Opt_type_hp:
438 ufs_clear_opt (*mount_options, UFSTYPE);
439 ufs_set_opt (*mount_options, UFSTYPE_HP);
440 break;
441 case Opt_type_nextstepcd:
442 ufs_clear_opt (*mount_options, UFSTYPE);
443 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
444 break;
445 case Opt_type_nextstep:
446 ufs_clear_opt (*mount_options, UFSTYPE);
447 ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
448 break;
449 case Opt_type_openstep:
450 ufs_clear_opt (*mount_options, UFSTYPE);
451 ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
452 break;
453 case Opt_onerror_panic:
454 ufs_clear_opt (*mount_options, ONERROR);
455 ufs_set_opt (*mount_options, ONERROR_PANIC);
456 break;
457 case Opt_onerror_lock:
458 ufs_clear_opt (*mount_options, ONERROR);
459 ufs_set_opt (*mount_options, ONERROR_LOCK);
460 break;
461 case Opt_onerror_umount:
462 ufs_clear_opt (*mount_options, ONERROR);
463 ufs_set_opt (*mount_options, ONERROR_UMOUNT);
464 break;
465 case Opt_onerror_repair:
Fabian Frederickde771bd2014-08-08 14:20:59 -0700466 pr_err("Unable to do repair on error, will lock lock instead\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 ufs_clear_opt (*mount_options, ONERROR);
468 ufs_set_opt (*mount_options, ONERROR_REPAIR);
469 break;
470 default:
Fabian Frederickde771bd2014-08-08 14:20:59 -0700471 pr_err("Invalid option: \"%s\" or missing value\n", p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 return 0;
473 }
474 }
475 return 1;
476}
477
478/*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300479 * Different types of UFS hold fs_cstotal in different
480 * places, and use different data structure for it.
481 * To make things simpler we just copy fs_cstotal to ufs_sb_private_info
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 */
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700483static void ufs_setup_cstotal(struct super_block *sb)
Evgeniy Dushistove295cfc2006-02-03 03:04:04 -0800484{
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700485 struct ufs_sb_info *sbi = UFS_SB(sb);
486 struct ufs_sb_private_info *uspi = sbi->s_uspi;
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700487 struct ufs_super_block_first *usb1;
488 struct ufs_super_block_second *usb2;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700489 struct ufs_super_block_third *usb3;
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700490 unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
491
492 UFSD("ENTER, mtype=%u\n", mtype);
493 usb1 = ubh_get_usb_first(uspi);
494 usb2 = ubh_get_usb_second(uspi);
495 usb3 = ubh_get_usb_third(uspi);
496
497 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
498 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
499 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
500 /*we have statistic in different place, then usual*/
501 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
502 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
503 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
504 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
505 } else {
506 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
507 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
508 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
509 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
510 }
511 UFSD("EXIT\n");
512}
513
514/*
515 * Read on-disk structures associated with cylinder groups
516 */
517static int ufs_read_cylinder_structures(struct super_block *sb)
518{
519 struct ufs_sb_info *sbi = UFS_SB(sb);
520 struct ufs_sb_private_info *uspi = sbi->s_uspi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 struct ufs_buffer_head * ubh;
522 unsigned char * base, * space;
523 unsigned size, blks, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700525 UFSD("ENTER\n");
526
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 /*
528 * Read cs structures from (usually) first data block
529 * on the device.
530 */
531 size = uspi->s_cssize;
532 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
Arnd Bergmann788257d2011-01-24 10:14:12 +0100533 base = space = kmalloc(size, GFP_NOFS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 if (!base)
535 goto failed;
Evgeniy Dushistove295cfc2006-02-03 03:04:04 -0800536 sbi->s_csp = (struct ufs_csum *)space;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 for (i = 0; i < blks; i += uspi->s_fpb) {
538 size = uspi->s_bsize;
539 if (i + uspi->s_fpb > blks)
540 size = (blks - i) * uspi->s_fsize;
541
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800542 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
Evgeniy7b4ee732006-01-14 11:42:06 +0300543
544 if (!ubh)
545 goto failed;
546
547 ubh_ubhcpymem (space, ubh, size);
Evgeniy7b4ee732006-01-14 11:42:06 +0300548
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 space += size;
550 ubh_brelse (ubh);
551 ubh = NULL;
552 }
553
554 /*
555 * Read cylinder group (we read only first fragment from block
556 * at this time) and prepare internal data structures for cg caching.
557 */
Arnd Bergmann788257d2011-01-24 10:14:12 +0100558 if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 goto failed;
560 for (i = 0; i < uspi->s_ncg; i++)
561 sbi->s_ucg[i] = NULL;
562 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
563 sbi->s_ucpi[i] = NULL;
564 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
565 }
566 for (i = 0; i < uspi->s_ncg; i++) {
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700567 UFSD("read cg %u\n", i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
569 goto failed;
570 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
571 goto failed;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700572
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 }
575 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
Arnd Bergmann788257d2011-01-24 10:14:12 +0100576 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 goto failed;
578 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
579 }
580 sbi->s_cg_loaded = 0;
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700581 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 return 1;
583
584failed:
Jesper Juhlf99d49a2005-11-07 01:01:34 -0800585 kfree (base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 if (sbi->s_ucg) {
587 for (i = 0; i < uspi->s_ncg; i++)
Jesper Juhlf99d49a2005-11-07 01:01:34 -0800588 if (sbi->s_ucg[i])
589 brelse (sbi->s_ucg[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 kfree (sbi->s_ucg);
591 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
Jesper Juhlf99d49a2005-11-07 01:01:34 -0800592 kfree (sbi->s_ucpi[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 }
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700594 UFSD("EXIT (FAILED)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 return 0;
596}
597
598/*
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700599 * Sync our internal copy of fs_cstotal with disk
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 */
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700601static void ufs_put_cstotal(struct super_block *sb)
Evgeniy Dushistove295cfc2006-02-03 03:04:04 -0800602{
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700603 unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
604 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
605 struct ufs_super_block_first *usb1;
606 struct ufs_super_block_second *usb2;
607 struct ufs_super_block_third *usb3;
608
609 UFSD("ENTER\n");
610 usb1 = ubh_get_usb_first(uspi);
611 usb2 = ubh_get_usb_second(uspi);
612 usb3 = ubh_get_usb_third(uspi);
613
614 if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
615 (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
616 mtype == UFS_MOUNT_UFSTYPE_UFS2) {
617 /*we have statistic in different place, then usual*/
618 usb2->fs_un.fs_u2.cs_ndir =
619 cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
620 usb2->fs_un.fs_u2.cs_nbfree =
621 cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
622 usb3->fs_un1.fs_u2.cs_nifree =
623 cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
624 usb3->fs_un1.fs_u2.cs_nffree =
625 cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
626 } else {
627 usb1->fs_cstotal.cs_ndir =
628 cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
629 usb1->fs_cstotal.cs_nbfree =
630 cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
631 usb1->fs_cstotal.cs_nifree =
632 cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
633 usb1->fs_cstotal.cs_nffree =
634 cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
635 }
636 ubh_mark_buffer_dirty(USPI_UBH(uspi));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800637 ufs_print_super_stuff(sb, usb1, usb2, usb3);
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700638 UFSD("EXIT\n");
639}
640
641/**
642 * ufs_put_super_internal() - put on-disk intrenal structures
643 * @sb: pointer to super_block structure
644 * Put on-disk structures associated with cylinder groups
645 * and write them back to disk, also update cs_total on disk
646 */
647static void ufs_put_super_internal(struct super_block *sb)
648{
649 struct ufs_sb_info *sbi = UFS_SB(sb);
650 struct ufs_sb_private_info *uspi = sbi->s_uspi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 struct ufs_buffer_head * ubh;
652 unsigned char * base, * space;
653 unsigned blks, size, i;
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700654
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700656 UFSD("ENTER\n");
Christoph Hellwig6cfd0142009-05-05 15:40:36 +0200657
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700658 ufs_put_cstotal(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 size = uspi->s_cssize;
660 blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
Evgeniy Dushistove295cfc2006-02-03 03:04:04 -0800661 base = space = (char*) sbi->s_csp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 for (i = 0; i < blks; i += uspi->s_fpb) {
663 size = uspi->s_bsize;
664 if (i + uspi->s_fpb > blks)
665 size = (blks - i) * uspi->s_fsize;
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800666
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800668
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 ubh_memcpyubh (ubh, space, size);
670 space += size;
671 ubh_mark_buffer_uptodate (ubh, 1);
672 ubh_mark_buffer_dirty (ubh);
673 ubh_brelse (ubh);
674 }
675 for (i = 0; i < sbi->s_cg_loaded; i++) {
676 ufs_put_cylinder (sb, i);
677 kfree (sbi->s_ucpi[i]);
678 }
679 for (; i < UFS_MAX_GROUP_LOADED; i++)
680 kfree (sbi->s_ucpi[i]);
681 for (i = 0; i < uspi->s_ncg; i++)
682 brelse (sbi->s_ucg[i]);
683 kfree (sbi->s_ucg);
684 kfree (base);
Christoph Hellwig6cfd0142009-05-05 15:40:36 +0200685
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700686 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687}
688
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300689static int ufs_sync_fs(struct super_block *sb, int wait)
690{
691 struct ufs_sb_private_info * uspi;
692 struct ufs_super_block_first * usb1;
693 struct ufs_super_block_third * usb3;
694 unsigned flags;
695
696 lock_ufs(sb);
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300697
698 UFSD("ENTER\n");
699
700 flags = UFS_SB(sb)->s_flags;
701 uspi = UFS_SB(sb)->s_uspi;
702 usb1 = ubh_get_usb_first(uspi);
703 usb3 = ubh_get_usb_third(uspi);
704
705 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
706 if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
707 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
708 (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
709 ufs_set_fs_state(sb, usb1, usb3,
710 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
711 ufs_put_cstotal(sb);
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300712
713 UFSD("EXIT\n");
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300714 unlock_ufs(sb);
715
716 return 0;
717}
718
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300719static void delayed_sync_fs(struct work_struct *work)
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300720{
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300721 struct ufs_sb_info *sbi;
722
723 sbi = container_of(work, struct ufs_sb_info, sync_work.work);
724
725 spin_lock(&sbi->work_lock);
726 sbi->work_queued = 0;
727 spin_unlock(&sbi->work_lock);
728
729 ufs_sync_fs(sbi->sb, 1);
730}
731
732void ufs_mark_sb_dirty(struct super_block *sb)
733{
734 struct ufs_sb_info *sbi = UFS_SB(sb);
735 unsigned long delay;
736
737 spin_lock(&sbi->work_lock);
738 if (!sbi->work_queued) {
739 delay = msecs_to_jiffies(dirty_writeback_interval * 10);
740 queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
741 sbi->work_queued = 1;
742 }
743 spin_unlock(&sbi->work_lock);
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300744}
745
746static void ufs_put_super(struct super_block *sb)
747{
748 struct ufs_sb_info * sbi = UFS_SB(sb);
749
750 UFSD("ENTER\n");
751
752 if (!(sb->s_flags & MS_RDONLY))
753 ufs_put_super_internal(sb);
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300754 cancel_delayed_work_sync(&sbi->sync_work);
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300755
756 ubh_brelse_uspi (sbi->s_uspi);
757 kfree (sbi->s_uspi);
Fabian Frederick02447562014-06-06 14:38:34 -0700758 mutex_destroy(&sbi->mutex);
Artem Bityutskiy7bd54ef2012-07-12 16:28:07 +0300759 kfree (sbi);
760 sb->s_fs_info = NULL;
761 UFSD("EXIT\n");
762 return;
763}
764
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765static int ufs_fill_super(struct super_block *sb, void *data, int silent)
766{
767 struct ufs_sb_info * sbi;
768 struct ufs_sb_private_info * uspi;
769 struct ufs_super_block_first * usb1;
770 struct ufs_super_block_second * usb2;
771 struct ufs_super_block_third * usb3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 struct ufs_buffer_head * ubh;
773 struct inode *inode;
774 unsigned block_size, super_block_size;
775 unsigned flags;
Evgeniy7b4ee732006-01-14 11:42:06 +0300776 unsigned super_block_offset;
Duane Griffin9e6766c2009-01-08 22:43:48 +0000777 unsigned maxsymlen;
David Howellsb55c4602008-02-07 00:15:48 -0800778 int ret = -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779
780 uspi = NULL;
781 ubh = NULL;
782 flags = 0;
783
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700784 UFSD("ENTER\n");
Fabian Frederick02447562014-06-06 14:38:34 -0700785
786#ifndef CONFIG_UFS_FS_WRITE
787 if (!(sb->s_flags & MS_RDONLY)) {
Fabian Fredericka9814c52014-08-08 14:20:57 -0700788 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
Fabian Frederick02447562014-06-06 14:38:34 -0700789 return -EROFS;
790 }
791#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
Panagiotis Issarisf8314dc2006-09-27 01:49:37 -0700793 sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 if (!sbi)
795 goto failed_nomem;
796 sb->s_fs_info = sbi;
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300797 sbi->sb = sb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700799 UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800
Arnd Bergmann788257d2011-01-24 10:14:12 +0100801 mutex_init(&sbi->mutex);
Artem Bityutskiy9e9ad5f2012-07-12 16:28:08 +0300802 spin_lock_init(&sbi->work_lock);
803 INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 /*
805 * Set default mount options
806 * Parse mount options
807 */
808 sbi->s_mount_opt = 0;
809 ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
810 if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
Fabian Fredericka9814c52014-08-08 14:20:57 -0700811 pr_err("wrong mount options\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 goto failed;
813 }
814 if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
815 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700816 pr_err("You didn't specify the type of your ufs filesystem\n\n"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 "mount -t ufs -o ufstype="
Michael Owenc690a722006-03-24 18:21:44 +0100818 "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
820 "default is ufstype=old\n");
821 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
822 }
823
Mark Fortescue252e2112007-10-16 23:26:31 -0700824 uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
825 sbi->s_uspi = uspi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826 if (!uspi)
827 goto failed;
Evgeniy Dushistovf3369532007-02-08 14:20:25 -0800828 uspi->s_dirblksize = UFS_SECTOR_SIZE;
Evgeniy7b4ee732006-01-14 11:42:06 +0300829 super_block_offset=UFS_SBLOCK;
830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 /* Keep 2Gig file limit. Some UFS variants need to override
832 this but as I don't know which I'll let those in the know loosen
833 the rules */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
835 case UFS_MOUNT_UFSTYPE_44BSD:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700836 UFSD("ufstype=44bsd\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 uspi->s_fsize = block_size = 512;
838 uspi->s_fmask = ~(512 - 1);
839 uspi->s_fshift = 9;
840 uspi->s_sbsize = super_block_size = 1536;
841 uspi->s_sbbase = 0;
842 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
843 break;
844 case UFS_MOUNT_UFSTYPE_UFS2:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700845 UFSD("ufstype=ufs2\n");
Evgeniy7b4ee732006-01-14 11:42:06 +0300846 super_block_offset=SBLOCK_UFS2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 uspi->s_fsize = block_size = 512;
848 uspi->s_fmask = ~(512 - 1);
849 uspi->s_fshift = 9;
850 uspi->s_sbsize = super_block_size = 1536;
851 uspi->s_sbbase = 0;
852 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 break;
854
855 case UFS_MOUNT_UFSTYPE_SUN:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700856 UFSD("ufstype=sun\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 uspi->s_fsize = block_size = 1024;
858 uspi->s_fmask = ~(1024 - 1);
859 uspi->s_fshift = 10;
860 uspi->s_sbsize = super_block_size = 2048;
861 uspi->s_sbbase = 0;
Mark Fortescue252e2112007-10-16 23:26:31 -0700862 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
864 break;
865
Mark Fortescue252e2112007-10-16 23:26:31 -0700866 case UFS_MOUNT_UFSTYPE_SUNOS:
Fabian Frederickd4beaab2014-08-08 14:21:05 -0700867 UFSD("ufstype=sunos\n");
Mark Fortescue252e2112007-10-16 23:26:31 -0700868 uspi->s_fsize = block_size = 1024;
869 uspi->s_fmask = ~(1024 - 1);
870 uspi->s_fshift = 10;
871 uspi->s_sbsize = 2048;
872 super_block_size = 2048;
873 uspi->s_sbbase = 0;
874 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
875 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
876 break;
877
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878 case UFS_MOUNT_UFSTYPE_SUNx86:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700879 UFSD("ufstype=sunx86\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 uspi->s_fsize = block_size = 1024;
881 uspi->s_fmask = ~(1024 - 1);
882 uspi->s_fshift = 10;
883 uspi->s_sbsize = super_block_size = 2048;
884 uspi->s_sbbase = 0;
Mark Fortescue252e2112007-10-16 23:26:31 -0700885 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
887 break;
888
889 case UFS_MOUNT_UFSTYPE_OLD:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700890 UFSD("ufstype=old\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 uspi->s_fsize = block_size = 1024;
892 uspi->s_fmask = ~(1024 - 1);
893 uspi->s_fshift = 10;
894 uspi->s_sbsize = super_block_size = 2048;
895 uspi->s_sbbase = 0;
896 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
897 if (!(sb->s_flags & MS_RDONLY)) {
898 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700899 pr_info("ufstype=old is supported read-only\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 sb->s_flags |= MS_RDONLY;
901 }
902 break;
903
904 case UFS_MOUNT_UFSTYPE_NEXTSTEP:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700905 UFSD("ufstype=nextstep\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 uspi->s_fsize = block_size = 1024;
907 uspi->s_fmask = ~(1024 - 1);
908 uspi->s_fshift = 10;
909 uspi->s_sbsize = super_block_size = 2048;
910 uspi->s_sbbase = 0;
Evgeniy Dushistov0c664f92007-12-04 23:45:06 -0800911 uspi->s_dirblksize = 1024;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
913 if (!(sb->s_flags & MS_RDONLY)) {
914 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700915 pr_info("ufstype=nextstep is supported read-only\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 sb->s_flags |= MS_RDONLY;
917 }
918 break;
919
920 case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700921 UFSD("ufstype=nextstep-cd\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 uspi->s_fsize = block_size = 2048;
923 uspi->s_fmask = ~(2048 - 1);
924 uspi->s_fshift = 11;
925 uspi->s_sbsize = super_block_size = 2048;
926 uspi->s_sbbase = 0;
Evgeniy Dushistov0c664f92007-12-04 23:45:06 -0800927 uspi->s_dirblksize = 1024;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
929 if (!(sb->s_flags & MS_RDONLY)) {
930 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700931 pr_info("ufstype=nextstep-cd is supported read-only\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 sb->s_flags |= MS_RDONLY;
933 }
934 break;
935
936 case UFS_MOUNT_UFSTYPE_OPENSTEP:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700937 UFSD("ufstype=openstep\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 uspi->s_fsize = block_size = 1024;
939 uspi->s_fmask = ~(1024 - 1);
940 uspi->s_fshift = 10;
941 uspi->s_sbsize = super_block_size = 2048;
942 uspi->s_sbbase = 0;
Evgeniy Dushistovf3369532007-02-08 14:20:25 -0800943 uspi->s_dirblksize = 1024;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
945 if (!(sb->s_flags & MS_RDONLY)) {
946 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700947 pr_info("ufstype=openstep is supported read-only\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948 sb->s_flags |= MS_RDONLY;
949 }
950 break;
951
952 case UFS_MOUNT_UFSTYPE_HP:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700953 UFSD("ufstype=hp\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954 uspi->s_fsize = block_size = 1024;
955 uspi->s_fmask = ~(1024 - 1);
956 uspi->s_fshift = 10;
957 uspi->s_sbsize = super_block_size = 2048;
958 uspi->s_sbbase = 0;
959 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
960 if (!(sb->s_flags & MS_RDONLY)) {
961 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700962 pr_info("ufstype=hp is supported read-only\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 sb->s_flags |= MS_RDONLY;
964 }
965 break;
966 default:
967 if (!silent)
Fabian Fredericka9814c52014-08-08 14:20:57 -0700968 pr_err("unknown ufstype\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969 goto failed;
970 }
971
972again:
973 if (!sb_set_blocksize(sb, block_size)) {
Fabian Frederickde771bd2014-08-08 14:20:59 -0700974 pr_err("failed to set blocksize\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 goto failed;
976 }
977
978 /*
979 * read ufs super block from device
980 */
Evgeniy7b4ee732006-01-14 11:42:06 +0300981
982 ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
983
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984 if (!ubh)
985 goto failed;
986
Evgeniy7b4ee732006-01-14 11:42:06 +0300987 usb1 = ubh_get_usb_first(uspi);
988 usb2 = ubh_get_usb_second(uspi);
989 usb3 = ubh_get_usb_third(uspi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990
Mark Fortescue252e2112007-10-16 23:26:31 -0700991 /* Sort out mod used on SunOS 4.1.3 for fs_state */
992 uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
993 if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
994 (uspi->s_postblformat != UFS_42POSTBLFMT)) {
995 flags &= ~UFS_ST_MASK;
996 flags |= UFS_ST_SUN;
997 }
998
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 /*
1000 * Check ufs magic number
1001 */
1002 sbi->s_bytesex = BYTESEX_LE;
1003 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1004 case UFS_MAGIC:
Thomas Stewartd27d7a92010-05-26 14:42:33 -07001005 case UFS_MAGIC_BW:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 case UFS2_MAGIC:
1007 case UFS_MAGIC_LFN:
1008 case UFS_MAGIC_FEA:
1009 case UFS_MAGIC_4GB:
1010 goto magic_found;
1011 }
1012 sbi->s_bytesex = BYTESEX_BE;
1013 switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1014 case UFS_MAGIC:
Thomas Stewartd27d7a92010-05-26 14:42:33 -07001015 case UFS_MAGIC_BW:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016 case UFS2_MAGIC:
1017 case UFS_MAGIC_LFN:
1018 case UFS_MAGIC_FEA:
1019 case UFS_MAGIC_4GB:
1020 goto magic_found;
1021 }
1022
1023 if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
1024 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
1025 || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
1026 && uspi->s_sbbase < 256) {
1027 ubh_brelse_uspi(uspi);
1028 ubh = NULL;
1029 uspi->s_sbbase += 8;
1030 goto again;
1031 }
1032 if (!silent)
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001033 pr_err("%s(): bad magic number\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034 goto failed;
1035
1036magic_found:
1037 /*
1038 * Check block and fragment sizes
1039 */
1040 uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1041 uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1042 uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1043 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1044 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1045
vignesh babu9e8c4272007-07-15 23:41:36 -07001046 if (!is_power_of_2(uspi->s_fsize)) {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001047 pr_err("%s(): fragment size %u is not a power of 2\n",
1048 __func__, uspi->s_fsize);
Fabian Fredericka9814c52014-08-08 14:20:57 -07001049 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 }
1051 if (uspi->s_fsize < 512) {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001052 pr_err("%s(): fragment size %u is too small\n",
1053 __func__, uspi->s_fsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 goto failed;
1055 }
1056 if (uspi->s_fsize > 4096) {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001057 pr_err("%s(): fragment size %u is too large\n",
1058 __func__, uspi->s_fsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 goto failed;
1060 }
vignesh babu9e8c4272007-07-15 23:41:36 -07001061 if (!is_power_of_2(uspi->s_bsize)) {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001062 pr_err("%s(): block size %u is not a power of 2\n",
1063 __func__, uspi->s_bsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 goto failed;
1065 }
1066 if (uspi->s_bsize < 4096) {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001067 pr_err("%s(): block size %u is too small\n",
1068 __func__, uspi->s_bsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069 goto failed;
1070 }
1071 if (uspi->s_bsize / uspi->s_fsize > 8) {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001072 pr_err("%s(): too many fragments per block (%u)\n",
1073 __func__, uspi->s_bsize / uspi->s_fsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074 goto failed;
1075 }
1076 if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1077 ubh_brelse_uspi(uspi);
1078 ubh = NULL;
1079 block_size = uspi->s_fsize;
1080 super_block_size = uspi->s_sbsize;
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001081 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 goto again;
1083 }
1084
Andrew Mortonf664f1f2007-10-29 14:37:21 -07001085 sbi->s_flags = flags;/*after that line some functions use s_flags*/
Evgeniy Dushistov3313e292007-02-12 00:54:31 -08001086 ufs_print_super_stuff(sb, usb1, usb2, usb3);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087
1088 /*
1089 * Check, if file system was correctly unmounted.
1090 * If not, make it read only.
1091 */
Andrew Mortonf664f1f2007-10-29 14:37:21 -07001092 if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1093 ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1094 (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1095 (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1096 (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1097 (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 switch(usb1->fs_clean) {
1099 case UFS_FSCLEAN:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001100 UFSD("fs is clean\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 break;
1102 case UFS_FSSTABLE:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001103 UFSD("fs is stable\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104 break;
Alex Viskovatoffb3a0fd42010-03-10 15:21:53 -08001105 case UFS_FSLOG:
1106 UFSD("fs is logging fs\n");
1107 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108 case UFS_FSOSF1:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001109 UFSD("fs is DEC OSF/1\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110 break;
1111 case UFS_FSACTIVE:
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001112 pr_err("%s(): fs is active\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 sb->s_flags |= MS_RDONLY;
1114 break;
1115 case UFS_FSBAD:
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001116 pr_err("%s(): fs is bad\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117 sb->s_flags |= MS_RDONLY;
1118 break;
1119 default:
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001120 pr_err("%s(): can't grok fs_clean 0x%x\n",
1121 __func__, usb1->fs_clean);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 sb->s_flags |= MS_RDONLY;
1123 break;
1124 }
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001125 } else {
Fabian Frederick07bc94f2014-08-08 14:21:01 -07001126 pr_err("%s(): fs needs fsck\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 sb->s_flags |= MS_RDONLY;
1128 }
1129
1130 /*
1131 * Read ufs_super_block into internal data structures
1132 */
1133 sb->s_op = &ufs_super_ops;
Alexey Dobriyanf3e2a522009-12-15 16:46:51 -08001134 sb->s_export_op = &ufs_export_ops;
Christoph Hellwig123e9ca2010-05-19 07:16:44 -04001135
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1137
1138 uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1139 uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1140 uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1141 uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1142 uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1143 uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1144
1145 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001146 uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1147 uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1148 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
1150 uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
1151 }
1152
1153 uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1154 /* s_bsize already set */
1155 /* s_fsize already set */
1156 uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1157 uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1158 uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1159 uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1160 uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1161 uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001162 UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1163 uspi->s_fshift);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164 uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1165 uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1166 /* s_sbsize already set */
1167 uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1168 uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1169 uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1170 uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1171 uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1172 uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1173 uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1174 uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -08001175
1176 if (uspi->fs_magic == UFS2_MAGIC)
1177 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1178 else
1179 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1180
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181 uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1182 uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1183 uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1184 uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1185 uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1186 uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1187 uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001188 uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1189 uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190 uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1191 uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192 uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1193 uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1194 uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1195
1196 /*
1197 * Compute another frequently used values
1198 */
1199 uspi->s_fpbmask = uspi->s_fpb - 1;
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001200 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001201 uspi->s_apbshift = uspi->s_bshift - 3;
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001202 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001203 uspi->s_apbshift = uspi->s_bshift - 2;
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001204
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 uspi->s_2apbshift = uspi->s_apbshift * 2;
1206 uspi->s_3apbshift = uspi->s_apbshift * 3;
1207 uspi->s_apb = 1 << uspi->s_apbshift;
1208 uspi->s_2apb = 1 << uspi->s_2apbshift;
1209 uspi->s_3apb = 1 << uspi->s_3apbshift;
1210 uspi->s_apbmask = uspi->s_apb - 1;
1211 uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1212 uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1213 uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1214 uspi->s_bpf = uspi->s_fsize << 3;
1215 uspi->s_bpfshift = uspi->s_fshift + 3;
1216 uspi->s_bpfmask = uspi->s_bpf - 1;
Evgeniy Dushistov90b315a2008-02-08 04:20:16 -08001217 if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1218 (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219 uspi->s_maxsymlinklen =
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001220 fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221
Duane Griffin9e6766c2009-01-08 22:43:48 +00001222 if (uspi->fs_magic == UFS2_MAGIC)
1223 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1224 else
1225 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1226 if (uspi->s_maxsymlinklen > maxsymlen) {
1227 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1228 "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1229 uspi->s_maxsymlinklen = maxsymlen;
1230 }
Al Viro8de52772012-02-06 12:45:27 -05001231 sb->s_max_links = UFS_LINK_MAX;
Duane Griffin9e6766c2009-01-08 22:43:48 +00001232
David Howellsb55c4602008-02-07 00:15:48 -08001233 inode = ufs_iget(sb, UFS_ROOTINO);
1234 if (IS_ERR(inode)) {
1235 ret = PTR_ERR(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236 goto failed;
David Howellsb55c4602008-02-07 00:15:48 -08001237 }
Al Viro48fde702012-01-08 22:15:13 -05001238 sb->s_root = d_make_root(inode);
David Howellsb55c4602008-02-07 00:15:48 -08001239 if (!sb->s_root) {
1240 ret = -ENOMEM;
Al Viro48fde702012-01-08 22:15:13 -05001241 goto failed;
David Howellsb55c4602008-02-07 00:15:48 -08001242 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001244 ufs_setup_cstotal(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 /*
1246 * Read cylinder group structures
1247 */
1248 if (!(sb->s_flags & MS_RDONLY))
1249 if (!ufs_read_cylinder_structures(sb))
1250 goto failed;
1251
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001252 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 return 0;
1254
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255failed:
Fabian Frederick02447562014-06-06 14:38:34 -07001256 mutex_destroy(&sbi->mutex);
Jesper Juhlf99d49a2005-11-07 01:01:34 -08001257 if (ubh)
1258 ubh_brelse_uspi (uspi);
1259 kfree (uspi);
1260 kfree(sbi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 sb->s_fs_info = NULL;
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001262 UFSD("EXIT (FAILED)\n");
David Howellsb55c4602008-02-07 00:15:48 -08001263 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264
1265failed_nomem:
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001266 UFSD("EXIT (NOMEM)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 return -ENOMEM;
1268}
1269
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1271{
1272 struct ufs_sb_private_info * uspi;
1273 struct ufs_super_block_first * usb1;
1274 struct ufs_super_block_third * usb3;
1275 unsigned new_mount_opt, ufstype;
1276 unsigned flags;
Alessio Igor Bogani337eb002009-05-12 15:10:54 +02001277
Theodore Ts'o02b99842014-03-13 10:14:33 -04001278 sync_filesystem(sb);
Arnd Bergmann788257d2011-01-24 10:14:12 +01001279 lock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280 uspi = UFS_SB(sb)->s_uspi;
1281 flags = UFS_SB(sb)->s_flags;
Evgeniy7b4ee732006-01-14 11:42:06 +03001282 usb1 = ubh_get_usb_first(uspi);
1283 usb3 = ubh_get_usb_third(uspi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284
1285 /*
1286 * Allow the "check" option to be passed as a remount option.
1287 * It is not possible to change ufstype option during remount
1288 */
1289 ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1290 new_mount_opt = 0;
1291 ufs_set_opt (new_mount_opt, ONERROR_LOCK);
Al Virobbd68512009-05-06 10:43:07 -04001292 if (!ufs_parse_options (data, &new_mount_opt)) {
Arnd Bergmann788257d2011-01-24 10:14:12 +01001293 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294 return -EINVAL;
Al Virobbd68512009-05-06 10:43:07 -04001295 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296 if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1297 new_mount_opt |= ufstype;
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001298 } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
Fabian Fredericka9814c52014-08-08 14:20:57 -07001299 pr_err("ufstype can't be changed during remount\n");
Arnd Bergmann788257d2011-01-24 10:14:12 +01001300 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301 return -EINVAL;
1302 }
1303
1304 if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1305 UFS_SB(sb)->s_mount_opt = new_mount_opt;
Arnd Bergmann788257d2011-01-24 10:14:12 +01001306 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307 return 0;
1308 }
1309
1310 /*
1311 * fs was mouted as rw, remounting ro
1312 */
1313 if (*mount_flags & MS_RDONLY) {
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001314 ufs_put_super_internal(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1316 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
Mark Fortescue252e2112007-10-16 23:26:31 -07001317 || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318 || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1319 ufs_set_fs_state(sb, usb1, usb3,
1320 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
Evgeniy Dushistov9695ef12006-06-25 05:47:22 -07001321 ubh_mark_buffer_dirty (USPI_UBH(uspi));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 sb->s_flags |= MS_RDONLY;
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001323 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 /*
1325 * fs was mounted as ro, remounting rw
1326 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327#ifndef CONFIG_UFS_FS_WRITE
Fabian Fredericka9814c52014-08-08 14:20:57 -07001328 pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
Arnd Bergmann788257d2011-01-24 10:14:12 +01001329 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 return -EINVAL;
1331#else
1332 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
Mark Fortescue252e2112007-10-16 23:26:31 -07001333 ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334 ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
Evgeniy Dushistovcbcae392007-02-12 00:54:30 -08001335 ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1336 ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
Fabian Fredericka9814c52014-08-08 14:20:57 -07001337 pr_err("this ufstype is read-only supported\n");
Arnd Bergmann788257d2011-01-24 10:14:12 +01001338 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339 return -EINVAL;
1340 }
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001341 if (!ufs_read_cylinder_structures(sb)) {
Fabian Fredericka9814c52014-08-08 14:20:57 -07001342 pr_err("failed during remounting\n");
Arnd Bergmann788257d2011-01-24 10:14:12 +01001343 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 return -EPERM;
1345 }
1346 sb->s_flags &= ~MS_RDONLY;
1347#endif
1348 }
1349 UFS_SB(sb)->s_mount_opt = new_mount_opt;
Arnd Bergmann788257d2011-01-24 10:14:12 +01001350 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001351 return 0;
1352}
1353
Al Viro34c80b12011-12-08 21:32:45 -05001354static int ufs_show_options(struct seq_file *seq, struct dentry *root)
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -07001355{
Al Viro34c80b12011-12-08 21:32:45 -05001356 struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -07001357 unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
Steven Whitehousea447c092008-10-13 10:46:57 +01001358 const struct match_token *tp = tokens;
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -07001359
1360 while (tp->token != Opt_onerror_panic && tp->token != mval)
1361 ++tp;
1362 BUG_ON(tp->token == Opt_onerror_panic);
1363 seq_printf(seq, ",%s", tp->pattern);
1364
1365 mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1366 while (tp->token != Opt_err && tp->token != mval)
1367 ++tp;
1368 BUG_ON(tp->token == Opt_err);
1369 seq_printf(seq, ",%s", tp->pattern);
1370
1371 return 0;
1372}
1373
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001374static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375{
David Howells726c3342006-06-23 02:02:58 -07001376 struct super_block *sb = dentry->d_sb;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001377 struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1378 unsigned flags = UFS_SB(sb)->s_flags;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001379 struct ufs_super_block_third *usb3;
Coly Li41d577a2009-04-02 16:59:44 -07001380 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381
Arnd Bergmann788257d2011-01-24 10:14:12 +01001382 lock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001384 usb3 = ubh_get_usb_third(uspi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1387 buf->f_type = UFS2_MAGIC;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001388 buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -07001389 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 buf->f_type = UFS_MAGIC;
1391 buf->f_blocks = uspi->s_dsize;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392 }
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -07001393 buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1394 uspi->cs_total.cs_nffree;
1395 buf->f_ffree = uspi->cs_total.cs_nifree;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396 buf->f_bsize = sb->s_blocksize;
1397 buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1398 ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1399 buf->f_files = uspi->s_ncg * uspi->s_ipg;
1400 buf->f_namelen = UFS_MAXNAMLEN;
Coly Li41d577a2009-04-02 16:59:44 -07001401 buf->f_fsid.val[0] = (u32)id;
1402 buf->f_fsid.val[1] = (u32)(id >> 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403
Arnd Bergmann788257d2011-01-24 10:14:12 +01001404 unlock_ufs(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405
1406 return 0;
1407}
1408
Christoph Lametere18b8902006-12-06 20:33:20 -08001409static struct kmem_cache * ufs_inode_cachep;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410
1411static struct inode *ufs_alloc_inode(struct super_block *sb)
1412{
1413 struct ufs_inode_info *ei;
Fabian Frederick61da3ae2015-02-17 13:45:28 -08001414
1415 ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 if (!ei)
1417 return NULL;
Fabian Frederick61da3ae2015-02-17 13:45:28 -08001418
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419 ei->vfs_inode.i_version = 1;
1420 return &ei->vfs_inode;
1421}
1422
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +11001423static void ufs_i_callback(struct rcu_head *head)
1424{
1425 struct inode *inode = container_of(head, struct inode, i_rcu);
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +11001426 kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1427}
1428
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429static void ufs_destroy_inode(struct inode *inode)
1430{
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +11001431 call_rcu(&inode->i_rcu, ufs_i_callback);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432}
1433
Alexey Dobriyan51cc5062008-07-25 19:45:34 -07001434static void init_once(void *foo)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435{
1436 struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1437
Christoph Lametera35afb82007-05-16 22:10:57 -07001438 inode_init_once(&ei->vfs_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439}
Paul Mundt20c2df82007-07-20 10:11:58 +09001440
Fabian Frederick76ee4732014-04-07 15:39:55 -07001441static int __init init_inodecache(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442{
1443 ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1444 sizeof(struct ufs_inode_info),
Paul Jacksonfffb60f2006-03-24 03:16:06 -08001445 0, (SLAB_RECLAIM_ACCOUNT|
1446 SLAB_MEM_SPREAD),
Paul Mundt20c2df82007-07-20 10:11:58 +09001447 init_once);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 if (ufs_inode_cachep == NULL)
1449 return -ENOMEM;
1450 return 0;
1451}
1452
1453static void destroy_inodecache(void)
1454{
Kirill A. Shutemov8c0a8532012-09-26 11:33:07 +10001455 /*
1456 * Make sure all delayed rcu free inodes are flushed before we
1457 * destroy cache.
1458 */
1459 rcu_barrier();
Alexey Dobriyan1a1d92c2006-09-27 01:49:40 -07001460 kmem_cache_destroy(ufs_inode_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461}
1462
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -08001463static const struct super_operations ufs_super_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 .alloc_inode = ufs_alloc_inode,
1465 .destroy_inode = ufs_destroy_inode,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 .write_inode = ufs_write_inode,
Al Viro58e82682010-06-05 19:40:56 -04001467 .evict_inode = ufs_evict_inode,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468 .put_super = ufs_put_super,
Christoph Hellwig8c800652009-06-08 10:08:05 +02001469 .sync_fs = ufs_sync_fs,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 .statfs = ufs_statfs,
1471 .remount_fs = ufs_remount,
Evgeniy Dushistov2a9807c02007-10-16 23:26:32 -07001472 .show_options = ufs_show_options,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473};
1474
Al Viro152a0832010-07-25 00:46:55 +04001475static struct dentry *ufs_mount(struct file_system_type *fs_type,
1476 int flags, const char *dev_name, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477{
Al Viro152a0832010-07-25 00:46:55 +04001478 return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479}
1480
1481static struct file_system_type ufs_fs_type = {
1482 .owner = THIS_MODULE,
1483 .name = "ufs",
Al Viro152a0832010-07-25 00:46:55 +04001484 .mount = ufs_mount,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 .kill_sb = kill_block_super,
1486 .fs_flags = FS_REQUIRES_DEV,
1487};
Eric W. Biederman7f78e032013-03-02 19:39:14 -08001488MODULE_ALIAS_FS("ufs");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489
1490static int __init init_ufs_fs(void)
1491{
1492 int err = init_inodecache();
1493 if (err)
1494 goto out1;
1495 err = register_filesystem(&ufs_fs_type);
1496 if (err)
1497 goto out;
1498 return 0;
1499out:
1500 destroy_inodecache();
1501out1:
1502 return err;
1503}
1504
1505static void __exit exit_ufs_fs(void)
1506{
1507 unregister_filesystem(&ufs_fs_type);
1508 destroy_inodecache();
1509}
1510
1511module_init(init_ufs_fs)
1512module_exit(exit_ufs_fs)
1513MODULE_LICENSE("GPL");