blob: 73fe773aa03418d3eb1ba4b2e8e71d08ff524e5c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/ufs/inode.c
3 *
4 * Copyright (C) 1998
5 * Daniel Pirkl <daniel.pirkl@email.cz>
6 * Charles University, Faculty of Mathematics and Physics
7 *
8 * from
9 *
10 * linux/fs/ext2/inode.c
11 *
12 * Copyright (C) 1992, 1993, 1994, 1995
13 * Remy Card (card@masi.ibp.fr)
14 * Laboratoire MASI - Institut Blaise Pascal
15 * Universite Pierre et Marie Curie (Paris VI)
16 *
17 * from
18 *
19 * linux/fs/minix/inode.c
20 *
21 * Copyright (C) 1991, 1992 Linus Torvalds
22 *
23 * Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993
24 * Big-endian to little-endian byte-swapping/bitmaps by
25 * David S. Miller (davem@caip.rutgers.edu), 1995
26 */
27
28#include <asm/uaccess.h>
29#include <asm/system.h>
30
31#include <linux/errno.h>
32#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include <linux/time.h>
34#include <linux/stat.h>
35#include <linux/string.h>
36#include <linux/mm.h>
37#include <linux/smp_lock.h>
38#include <linux/buffer_head.h>
Christoph Hellwiga9185b42010-03-05 09:21:37 +010039#include <linux/writeback.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
Mike Frysingere5420592008-02-08 04:21:31 -080041#include "ufs_fs.h"
Christoph Hellwigbcd6d4e2007-10-16 23:26:51 -070042#include "ufs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include "swab.h"
44#include "util.h"
45
Adrian Bunk138bb682006-06-25 05:47:32 -070046static u64 ufs_frag_map(struct inode *inode, sector_t frag);
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
49{
50 struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
51 int ptrs = uspi->s_apb;
52 int ptrs_bits = uspi->s_apbshift;
53 const long direct_blocks = UFS_NDADDR,
54 indirect_blocks = ptrs,
55 double_blocks = (1 << (ptrs_bits * 2));
56 int n = 0;
57
58
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -070059 UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks);
Roel Kluin37044c82009-06-17 16:26:28 -070060 if (i_block < direct_blocks) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 offsets[n++] = i_block;
62 } else if ((i_block -= direct_blocks) < indirect_blocks) {
63 offsets[n++] = UFS_IND_BLOCK;
64 offsets[n++] = i_block;
65 } else if ((i_block -= indirect_blocks) < double_blocks) {
66 offsets[n++] = UFS_DIND_BLOCK;
67 offsets[n++] = i_block >> ptrs_bits;
68 offsets[n++] = i_block & (ptrs - 1);
69 } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
70 offsets[n++] = UFS_TIND_BLOCK;
71 offsets[n++] = i_block >> (ptrs_bits * 2);
72 offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
73 offsets[n++] = i_block & (ptrs - 1);
74 } else {
75 ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big");
76 }
77 return n;
78}
79
80/*
81 * Returns the location of the fragment from
82 * the begining of the filesystem.
83 */
84
Adrian Bunk138bb682006-06-25 05:47:32 -070085static u64 ufs_frag_map(struct inode *inode, sector_t frag)
Linus Torvalds1da177e2005-04-16 15:20:36 -070086{
87 struct ufs_inode_info *ufsi = UFS_I(inode);
88 struct super_block *sb = inode->i_sb;
89 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
90 u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift;
91 int shift = uspi->s_apbshift-uspi->s_fpbshift;
92 sector_t offsets[4], *p;
93 int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets);
94 u64 ret = 0L;
95 __fs32 block;
96 __fs64 u2_block = 0L;
97 unsigned flags = UFS_SB(sb)->s_flags;
98 u64 temp = 0L;
99
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700100 UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
Andrew Morton7256d812006-06-29 02:24:29 -0700101 UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
102 uspi->s_fpbshift, uspi->s_apbmask,
103 (unsigned long long)mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
105 if (depth == 0)
106 return 0;
107
108 p = offsets;
109
110 lock_kernel();
111 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
112 goto ufs2;
113
114 block = ufsi->i_u1.i_data[*p++];
115 if (!block)
116 goto out;
117 while (--depth) {
118 struct buffer_head *bh;
119 sector_t n = *p++;
120
121 bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift));
122 if (!bh)
123 goto out;
124 block = ((__fs32 *) bh->b_data)[n & mask];
125 brelse (bh);
126 if (!block)
127 goto out;
128 }
129 ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask));
130 goto out;
131ufs2:
132 u2_block = ufsi->i_u1.u2_i_data[*p++];
133 if (!u2_block)
134 goto out;
135
136
137 while (--depth) {
138 struct buffer_head *bh;
139 sector_t n = *p++;
140
141
142 temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block);
143 bh = sb_bread(sb, temp +(u64) (n>>shift));
144 if (!bh)
145 goto out;
146 u2_block = ((__fs64 *)bh->b_data)[n & mask];
147 brelse(bh);
148 if (!u2_block)
149 goto out;
150 }
151 temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block);
152 ret = temp + (u64) (frag & uspi->s_fpbmask);
153
154out:
155 unlock_kernel();
156 return ret;
157}
158
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700159/**
160 * ufs_inode_getfrag() - allocate new fragment(s)
161 * @inode - pointer to inode
162 * @fragment - number of `fragment' which hold pointer
163 * to new allocated fragment(s)
164 * @new_fragment - number of new allocated fragment(s)
165 * @required - how many fragment(s) we require
166 * @err - we set it if something wrong
167 * @phys - pointer to where we save physical number of new allocated fragments,
168 * NULL if we allocate not data(indirect blocks for example).
169 * @new - we set it if we allocate new block
170 * @locked_page - for ufs_new_fragments()
171 */
172static struct buffer_head *
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800173ufs_inode_getfrag(struct inode *inode, u64 fragment,
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700174 sector_t new_fragment, unsigned int required, int *err,
175 long *phys, int *new, struct page *locked_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176{
177 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700178 struct super_block *sb = inode->i_sb;
179 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 struct buffer_head * result;
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800181 unsigned blockoff, lastblockoff;
182 u64 tmp, goal, lastfrag, block, lastblock;
183 void *p, *p2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800185 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
186 "metadata %d\n", inode->i_ino, (unsigned long long)fragment,
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700187 (unsigned long long)new_fragment, required, !phys);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 /* TODO : to be done for write support
190 if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
191 goto ufs2;
192 */
193
194 block = ufs_fragstoblks (fragment);
195 blockoff = ufs_fragnum (fragment);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800196 p = ufs_get_direct_data_ptr(uspi, ufsi, block);
197
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 goal = 0;
199
200repeat:
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800201 tmp = ufs_data_ptr_to_cpu(sb, p);
202
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 lastfrag = ufsi->i_lastfrag;
204 if (tmp && fragment < lastfrag) {
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700205 if (!phys) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800207 if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
208 UFSD("EXIT, result %llu\n",
209 (unsigned long long)tmp + blockoff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 return result;
211 }
212 brelse (result);
213 goto repeat;
214 } else {
Evgeniy Dushistov4b25a372007-03-16 13:38:09 -0800215 *phys = uspi->s_sbbase + tmp + blockoff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 return NULL;
217 }
218 }
219
220 lastblock = ufs_fragstoblks (lastfrag);
221 lastblockoff = ufs_fragnum (lastfrag);
222 /*
223 * We will extend file into new block beyond last allocated block
224 */
225 if (lastblock < block) {
226 /*
227 * We must reallocate last allocated block
228 */
229 if (lastblockoff) {
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800230 p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
231 tmp = ufs_new_fragments(inode, p2, lastfrag,
232 ufs_data_ptr_to_cpu(sb, p2),
233 uspi->s_fpb - lastblockoff,
234 err, locked_page);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 if (!tmp) {
236 if (lastfrag != ufsi->i_lastfrag)
237 goto repeat;
238 else
239 return NULL;
240 }
241 lastfrag = ufsi->i_lastfrag;
242
243 }
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800244 tmp = ufs_data_ptr_to_cpu(sb,
245 ufs_get_direct_data_ptr(uspi, ufsi,
246 lastblock));
Evgeniy Dushistovc37336b2006-08-27 01:23:45 -0700247 if (tmp)
248 goal = tmp + uspi->s_fpb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 tmp = ufs_new_fragments (inode, p, fragment - blockoff,
Evgeniy Dushistov6ef4d6b2006-06-25 05:47:20 -0700250 goal, required + blockoff,
Evgeniy Dushistova685e262007-01-29 13:19:54 -0800251 err,
252 phys != NULL ? locked_page : NULL);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800253 } else if (lastblock == block) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 /*
255 * We will extend last allocated block
256 */
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800257 tmp = ufs_new_fragments(inode, p, fragment -
258 (blockoff - lastblockoff),
259 ufs_data_ptr_to_cpu(sb, p),
260 required + (blockoff - lastblockoff),
Evgeniy Dushistova685e262007-01-29 13:19:54 -0800261 err, phys != NULL ? locked_page : NULL);
Evgeniy Dushistovc37336b2006-08-27 01:23:45 -0700262 } else /* (lastblock > block) */ {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 /*
264 * We will allocate new block before last allocated block
265 */
Evgeniy Dushistovc37336b2006-08-27 01:23:45 -0700266 if (block) {
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800267 tmp = ufs_data_ptr_to_cpu(sb,
268 ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
Evgeniy Dushistovc37336b2006-08-27 01:23:45 -0700269 if (tmp)
270 goal = tmp + uspi->s_fpb;
271 }
Evgeniy Dushistov6ef4d6b2006-06-25 05:47:20 -0700272 tmp = ufs_new_fragments(inode, p, fragment - blockoff,
Evgeniy Dushistova685e262007-01-29 13:19:54 -0800273 goal, uspi->s_fpb, err,
274 phys != NULL ? locked_page : NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 }
276 if (!tmp) {
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800277 if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 (blockoff && lastfrag != ufsi->i_lastfrag))
279 goto repeat;
280 *err = -ENOSPC;
281 return NULL;
282 }
283
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700284 if (!phys) {
Evgeniy Dushistov4b25a372007-03-16 13:38:09 -0800285 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 } else {
Evgeniy Dushistov4b25a372007-03-16 13:38:09 -0800287 *phys = uspi->s_sbbase + tmp + blockoff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 result = NULL;
289 *err = 0;
290 *new = 1;
291 }
292
293 inode->i_ctime = CURRENT_TIME_SEC;
294 if (IS_SYNC(inode))
295 ufs_sync_inode (inode);
296 mark_inode_dirty(inode);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800297 UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 return result;
299
300 /* This part : To be implemented ....
301 Required only for writing, not required for READ-ONLY.
302ufs2:
303
304 u2_block = ufs_fragstoblks(fragment);
305 u2_blockoff = ufs_fragnum(fragment);
306 p = ufsi->i_u1.u2_i_data + block;
307 goal = 0;
308
309repeat2:
310 tmp = fs32_to_cpu(sb, *p);
311 lastfrag = ufsi->i_lastfrag;
312
313 */
314}
315
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700316/**
317 * ufs_inode_getblock() - allocate new block
318 * @inode - pointer to inode
319 * @bh - pointer to block which hold "pointer" to new allocated block
320 * @fragment - number of `fragment' which hold pointer
321 * to new allocated block
322 * @new_fragment - number of new allocated fragment
323 * (block will hold this fragment and also uspi->s_fpb-1)
324 * @err - see ufs_inode_getfrag()
325 * @phys - see ufs_inode_getfrag()
326 * @new - see ufs_inode_getfrag()
327 * @locked_page - see ufs_inode_getfrag()
328 */
329static struct buffer_head *
330ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800331 u64 fragment, sector_t new_fragment, int *err,
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700332 long *phys, int *new, struct page *locked_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333{
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700334 struct super_block *sb = inode->i_sb;
335 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 struct buffer_head * result;
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800337 unsigned blockoff;
338 u64 tmp, goal, block;
339 void *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 block = ufs_fragstoblks (fragment);
342 blockoff = ufs_fragnum (fragment);
343
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800344 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
345 inode->i_ino, (unsigned long long)fragment,
346 (unsigned long long)new_fragment, !phys);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347
348 result = NULL;
349 if (!bh)
350 goto out;
351 if (!buffer_uptodate(bh)) {
352 ll_rw_block (READ, 1, &bh);
353 wait_on_buffer (bh);
354 if (!buffer_uptodate(bh))
355 goto out;
356 }
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800357 if (uspi->fs_magic == UFS2_MAGIC)
358 p = (__fs64 *)bh->b_data + block;
359 else
360 p = (__fs32 *)bh->b_data + block;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361repeat:
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800362 tmp = ufs_data_ptr_to_cpu(sb, p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 if (tmp) {
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700364 if (!phys) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800366 if (tmp == ufs_data_ptr_to_cpu(sb, p))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 goto out;
368 brelse (result);
369 goto repeat;
370 } else {
Evgeniy Dushistov4b25a372007-03-16 13:38:09 -0800371 *phys = uspi->s_sbbase + tmp + blockoff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 goto out;
373 }
374 }
375
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800376 if (block && (uspi->fs_magic == UFS2_MAGIC ?
377 (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
378 (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 goal = tmp + uspi->s_fpb;
380 else
381 goal = bh->b_blocknr + uspi->s_fpb;
Evgeniy Dushistov6ef4d6b2006-06-25 05:47:20 -0700382 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
383 uspi->s_fpb, err, locked_page);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 if (!tmp) {
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800385 if (ufs_data_ptr_to_cpu(sb, p))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 goto repeat;
387 goto out;
388 }
389
Evgeniy Dushistovc9a27b52006-06-25 05:47:19 -0700390
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700391 if (!phys) {
Evgeniy Dushistov4b25a372007-03-16 13:38:09 -0800392 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 } else {
Evgeniy Dushistov4b25a372007-03-16 13:38:09 -0800394 *phys = uspi->s_sbbase + tmp + blockoff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 *new = 1;
396 }
397
398 mark_buffer_dirty(bh);
399 if (IS_SYNC(inode))
400 sync_dirty_buffer(bh);
401 inode->i_ctime = CURRENT_TIME_SEC;
402 mark_inode_dirty(inode);
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800403 UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404out:
405 brelse (bh);
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700406 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 return result;
408}
409
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700410/**
411 * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and
412 * readpage, writepage and so on
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 */
414
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700415int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416{
417 struct super_block * sb = inode->i_sb;
418 struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
419 struct buffer_head * bh;
420 int ret, err, new;
421 unsigned long ptr,phys;
422 u64 phys64 = 0;
423
424 if (!create) {
425 phys64 = ufs_frag_map(inode, fragment);
Andrew Morton7256d812006-06-29 02:24:29 -0700426 UFSD("phys64 = %llu\n", (unsigned long long)phys64);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 if (phys64)
428 map_bh(bh_result, sb, phys64);
429 return 0;
430 }
431
432 /* This code entered only while writing ....? */
433
434 err = -EIO;
435 new = 0;
436 ret = 0;
437 bh = NULL;
438
439 lock_kernel();
440
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700441 UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 if (fragment >
443 ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb)
444 << uspi->s_fpbshift))
445 goto abort_too_big;
446
447 err = 0;
448 ptr = fragment;
449
450 /*
451 * ok, these macros clean the logic up a bit and make
452 * it much more readable:
453 */
454#define GET_INODE_DATABLOCK(x) \
Evgeniy Dushistova685e262007-01-29 13:19:54 -0800455 ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\
456 bh_result->b_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457#define GET_INODE_PTR(x) \
Evgeniy Dushistova685e262007-01-29 13:19:54 -0800458 ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
459 bh_result->b_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460#define GET_INDIRECT_DATABLOCK(x) \
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700461 ufs_inode_getblock(inode, bh, x, fragment, \
Evgeniy Dushistovd63b7092007-01-05 16:37:04 -0800462 &err, &phys, &new, bh_result->b_page)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463#define GET_INDIRECT_PTR(x) \
Evgeniy Dushistov022a6dc2006-06-25 05:47:27 -0700464 ufs_inode_getblock(inode, bh, x, fragment, \
Evgeniy Dushistovd63b7092007-01-05 16:37:04 -0800465 &err, NULL, NULL, NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
467 if (ptr < UFS_NDIR_FRAGMENT) {
468 bh = GET_INODE_DATABLOCK(ptr);
469 goto out;
470 }
471 ptr -= UFS_NDIR_FRAGMENT;
472 if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) {
473 bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
474 goto get_indirect;
475 }
476 ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift);
477 if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) {
478 bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
479 goto get_double;
480 }
481 ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
482 bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
483 bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
484get_double:
485 bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
486get_indirect:
487 bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
488
489#undef GET_INODE_DATABLOCK
490#undef GET_INODE_PTR
491#undef GET_INDIRECT_DATABLOCK
492#undef GET_INDIRECT_PTR
493
494out:
495 if (err)
496 goto abort;
497 if (new)
498 set_buffer_new(bh_result);
499 map_bh(bh_result, sb, phys);
500abort:
501 unlock_kernel();
502 return err;
503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504abort_too_big:
505 ufs_warning(sb, "ufs_get_block", "block > big");
506 goto abort;
507}
508
Adrian Bunk138bb682006-06-25 05:47:32 -0700509static struct buffer_head *ufs_getfrag(struct inode *inode,
510 unsigned int fragment,
511 int create, int *err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
513 struct buffer_head dummy;
514 int error;
515
516 dummy.b_state = 0;
517 dummy.b_blocknr = -1000;
518 error = ufs_getfrag_block(inode, fragment, &dummy, create);
519 *err = error;
520 if (!error && buffer_mapped(&dummy)) {
521 struct buffer_head *bh;
522 bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
523 if (buffer_new(&dummy)) {
524 memset(bh->b_data, 0, inode->i_sb->s_blocksize);
525 set_buffer_uptodate(bh);
526 mark_buffer_dirty(bh);
527 }
528 return bh;
529 }
530 return NULL;
531}
532
533struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
534 int create, int * err)
535{
536 struct buffer_head * bh;
537
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700538 UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 bh = ufs_getfrag (inode, fragment, create, err);
540 if (!bh || buffer_uptodate(bh))
541 return bh;
542 ll_rw_block (READ, 1, &bh);
543 wait_on_buffer (bh);
544 if (buffer_uptodate(bh))
545 return bh;
546 brelse (bh);
547 *err = -EIO;
548 return NULL;
549}
550
551static int ufs_writepage(struct page *page, struct writeback_control *wbc)
552{
553 return block_write_full_page(page,ufs_getfrag_block,wbc);
554}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700555
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556static int ufs_readpage(struct file *file, struct page *page)
557{
558 return block_read_full_page(page,ufs_getfrag_block);
559}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700560
561int __ufs_write_begin(struct file *file, struct address_space *mapping,
562 loff_t pos, unsigned len, unsigned flags,
563 struct page **pagep, void **fsdata)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564{
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700565 return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
566 ufs_getfrag_block);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700568
569static int ufs_write_begin(struct file *file, struct address_space *mapping,
570 loff_t pos, unsigned len, unsigned flags,
571 struct page **pagep, void **fsdata)
572{
573 *pagep = NULL;
574 return __ufs_write_begin(file, mapping, pos, len, flags, pagep, fsdata);
575}
576
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
578{
579 return generic_block_bmap(mapping,block,ufs_getfrag_block);
580}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700581
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700582const struct address_space_operations ufs_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 .readpage = ufs_readpage,
584 .writepage = ufs_writepage,
585 .sync_page = block_sync_page,
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700586 .write_begin = ufs_write_begin,
587 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 .bmap = ufs_bmap
589};
590
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700591static void ufs_set_inode_ops(struct inode *inode)
592{
593 if (S_ISREG(inode->i_mode)) {
594 inode->i_op = &ufs_file_inode_operations;
595 inode->i_fop = &ufs_file_operations;
596 inode->i_mapping->a_ops = &ufs_aops;
597 } else if (S_ISDIR(inode->i_mode)) {
598 inode->i_op = &ufs_dir_inode_operations;
599 inode->i_fop = &ufs_dir_operations;
600 inode->i_mapping->a_ops = &ufs_aops;
601 } else if (S_ISLNK(inode->i_mode)) {
602 if (!inode->i_blocks)
603 inode->i_op = &ufs_fast_symlink_inode_operations;
604 else {
Dmitry Monakhov311b95492010-04-15 00:56:58 +0200605 inode->i_op = &ufs_symlink_inode_operations;
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700606 inode->i_mapping->a_ops = &ufs_aops;
607 }
608 } else
609 init_special_inode(inode, inode->i_mode,
610 ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
611}
612
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700613static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614{
615 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700616 struct super_block *sb = inode->i_sb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 mode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618
619 /*
620 * Copy data to the in-core inode.
621 */
622 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
623 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700624 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700626 return -1;
627 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
629 /*
630 * Linux now has 32-bit uid and gid, so we can support EFT.
631 */
632 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode);
633 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode);
634
635 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
636 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
637 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
638 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
639 inode->i_mtime.tv_nsec = 0;
640 inode->i_atime.tv_nsec = 0;
641 inode->i_ctime.tv_nsec = 0;
642 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800643 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
646 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700647
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648
649 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000650 memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
651 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistovdd187a22006-06-25 05:47:25 -0700652 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000653 memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000654 sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
655 ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700657 return 0;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700658}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700660static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700661{
662 struct ufs_inode_info *ufsi = UFS_I(inode);
663 struct super_block *sb = inode->i_sb;
664 mode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700666 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 /*
668 * Copy data to the in-core inode.
669 */
670 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
671 inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700672 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700674 return -1;
675 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676
677 /*
678 * Linux now has 32-bit uid and gid, so we can support EFT.
679 */
680 inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid);
681 inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid);
682
683 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800684 inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime);
685 inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime);
686 inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime);
687 inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec);
688 inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec);
689 inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800691 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 /*
694 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
695 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
696 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697
698 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000699 memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
700 sizeof(ufs2_inode->ui_u2.ui_addr));
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700701 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000702 memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000703 sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
704 ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700706 return 0;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700707}
708
David Howellsb55c4602008-02-07 00:15:48 -0800709struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700710{
David Howellsb55c4602008-02-07 00:15:48 -0800711 struct ufs_inode_info *ufsi;
712 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700713 struct buffer_head * bh;
David Howellsb55c4602008-02-07 00:15:48 -0800714 struct inode *inode;
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700715 int err;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700716
David Howellsb55c4602008-02-07 00:15:48 -0800717 UFSD("ENTER, ino %lu\n", ino);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700718
David Howellsb55c4602008-02-07 00:15:48 -0800719 if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700720 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
David Howellsb55c4602008-02-07 00:15:48 -0800721 ino);
722 return ERR_PTR(-EIO);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700723 }
724
David Howellsb55c4602008-02-07 00:15:48 -0800725 inode = iget_locked(sb, ino);
726 if (!inode)
727 return ERR_PTR(-ENOMEM);
728 if (!(inode->i_state & I_NEW))
729 return inode;
730
731 ufsi = UFS_I(inode);
732
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700733 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
734 if (!bh) {
735 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n",
736 inode->i_ino);
737 goto bad_inode;
738 }
739 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
740 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
741
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700742 err = ufs2_read_inode(inode,
743 ufs2_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700744 } else {
745 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
746
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700747 err = ufs1_read_inode(inode,
748 ufs_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700749 }
750
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700751 if (err)
752 goto bad_inode;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700753 inode->i_version++;
754 ufsi->i_lastfrag =
755 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
756 ufsi->i_dir_start_lookup = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 ufsi->i_osync = 0;
758
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700759 ufs_set_inode_ops(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760
761 brelse(bh);
762
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700763 UFSD("EXIT\n");
David Howellsb55c4602008-02-07 00:15:48 -0800764 unlock_new_inode(inode);
765 return inode;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700766
767bad_inode:
David Howellsb55c4602008-02-07 00:15:48 -0800768 iget_failed(inode);
769 return ERR_PTR(-EIO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770}
771
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800772static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773{
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800774 struct super_block *sb = inode->i_sb;
775 struct ufs_inode_info *ufsi = UFS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776
777 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
778 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
779
780 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid);
781 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid);
782
783 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
784 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
785 ufs_inode->ui_atime.tv_usec = 0;
786 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec);
787 ufs_inode->ui_ctime.tv_usec = 0;
788 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec);
789 ufs_inode->ui_mtime.tv_usec = 0;
790 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
791 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800792 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800794 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow);
796 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag);
797 }
798
799 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
800 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
801 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0];
802 } else if (inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000803 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
804 sizeof(ufs_inode->ui_u2.ui_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 }
806 else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000807 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
808 sizeof(ufs_inode->ui_u2.ui_symlink));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 }
810
811 if (!inode->i_nlink)
812 memset (ufs_inode, 0, sizeof(struct ufs_inode));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800813}
814
815static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
816{
817 struct super_block *sb = inode->i_sb;
818 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800819
820 UFSD("ENTER\n");
821 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
822 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
823
824 ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid);
825 ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
826
827 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800828 ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
829 ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec);
830 ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec);
831 ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec);
832 ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec);
833 ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800834
835 ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
836 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
837 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
838
839 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
840 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
841 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0];
842 } else if (inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000843 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
844 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800845 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000846 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
847 sizeof(ufs_inode->ui_u2.ui_symlink));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800848 }
849
850 if (!inode->i_nlink)
851 memset (ufs_inode, 0, sizeof(struct ufs2_inode));
852 UFSD("EXIT\n");
853}
854
855static int ufs_update_inode(struct inode * inode, int do_sync)
856{
857 struct super_block *sb = inode->i_sb;
858 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
859 struct buffer_head * bh;
860
861 UFSD("ENTER, ino %lu\n", inode->i_ino);
862
863 if (inode->i_ino < UFS_ROOTINO ||
864 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
865 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
866 return -1;
867 }
868
869 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
870 if (!bh) {
871 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
872 return -1;
873 }
874 if (uspi->fs_magic == UFS2_MAGIC) {
875 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
876
877 ufs2_update_inode(inode,
878 ufs2_inode + ufs_inotofsbo(inode->i_ino));
879 } else {
880 struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
881
882 ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
883 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
885 mark_buffer_dirty(bh);
886 if (do_sync)
887 sync_dirty_buffer(bh);
888 brelse (bh);
889
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700890 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 return 0;
892}
893
Christoph Hellwiga9185b42010-03-05 09:21:37 +0100894int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895{
896 int ret;
897 lock_kernel();
Christoph Hellwiga9185b42010-03-05 09:21:37 +0100898 ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899 unlock_kernel();
900 return ret;
901}
902
903int ufs_sync_inode (struct inode *inode)
904{
905 return ufs_update_inode (inode, 1);
906}
907
908void ufs_delete_inode (struct inode * inode)
909{
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700910 loff_t old_i_size;
911
Mark Fashehfef26652005-09-09 13:01:31 -0700912 truncate_inode_pages(&inode->i_data, 0);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700913 if (is_bad_inode(inode))
914 goto no_delete;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915 /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
916 lock_kernel();
917 mark_inode_dirty(inode);
918 ufs_update_inode(inode, IS_SYNC(inode));
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700919 old_i_size = inode->i_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 inode->i_size = 0;
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700921 if (inode->i_blocks && ufs_truncate(inode, old_i_size))
Harvey Harrison9746077a72008-04-28 02:16:17 -0700922 ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 ufs_free_inode (inode);
924 unlock_kernel();
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700925 return;
926no_delete:
927 clear_inode(inode); /* We must guarantee clearing of inode... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928}