blob: 45ce32391f8f3fc2e5137ed0502623498892e51f [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
Christoph Hellwigf4e420d2010-06-04 11:29:56 +0200561int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562{
Christoph Hellwig6e1db882010-06-04 11:29:57 +0200563 return __block_write_begin(page, pos, len, ufs_getfrag_block);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700565
566static int ufs_write_begin(struct file *file, struct address_space *mapping,
567 loff_t pos, unsigned len, unsigned flags,
568 struct page **pagep, void **fsdata)
569{
570 *pagep = NULL;
Christoph Hellwigf4e420d2010-06-04 11:29:56 +0200571 return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
572 ufs_getfrag_block);
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700573}
574
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
576{
577 return generic_block_bmap(mapping,block,ufs_getfrag_block);
578}
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700579
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700580const struct address_space_operations ufs_aops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 .readpage = ufs_readpage,
582 .writepage = ufs_writepage,
583 .sync_page = block_sync_page,
Nick Piggin82b9d1d2007-10-16 01:25:19 -0700584 .write_begin = ufs_write_begin,
585 .write_end = generic_write_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 .bmap = ufs_bmap
587};
588
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700589static void ufs_set_inode_ops(struct inode *inode)
590{
591 if (S_ISREG(inode->i_mode)) {
592 inode->i_op = &ufs_file_inode_operations;
593 inode->i_fop = &ufs_file_operations;
594 inode->i_mapping->a_ops = &ufs_aops;
595 } else if (S_ISDIR(inode->i_mode)) {
596 inode->i_op = &ufs_dir_inode_operations;
597 inode->i_fop = &ufs_dir_operations;
598 inode->i_mapping->a_ops = &ufs_aops;
599 } else if (S_ISLNK(inode->i_mode)) {
600 if (!inode->i_blocks)
601 inode->i_op = &ufs_fast_symlink_inode_operations;
602 else {
Dmitry Monakhov311b95492010-04-15 00:56:58 +0200603 inode->i_op = &ufs_symlink_inode_operations;
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700604 inode->i_mapping->a_ops = &ufs_aops;
605 }
606 } else
607 init_special_inode(inode, inode->i_mode,
608 ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
609}
610
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700611static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612{
613 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700614 struct super_block *sb = inode->i_sb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 mode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616
617 /*
618 * Copy data to the in-core inode.
619 */
620 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
621 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700622 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700624 return -1;
625 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
627 /*
628 * Linux now has 32-bit uid and gid, so we can support EFT.
629 */
630 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode);
631 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode);
632
633 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
634 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
635 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
636 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
637 inode->i_mtime.tv_nsec = 0;
638 inode->i_atime.tv_nsec = 0;
639 inode->i_ctime.tv_nsec = 0;
640 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800641 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
644 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700645
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
647 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000648 memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
649 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistovdd187a22006-06-25 05:47:25 -0700650 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000651 memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000652 sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
653 ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700655 return 0;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700656}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700658static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700659{
660 struct ufs_inode_info *ufsi = UFS_I(inode);
661 struct super_block *sb = inode->i_sb;
662 mode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700664 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 /*
666 * Copy data to the in-core inode.
667 */
668 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
669 inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700670 if (inode->i_nlink == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700672 return -1;
673 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674
675 /*
676 * Linux now has 32-bit uid and gid, so we can support EFT.
677 */
678 inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid);
679 inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid);
680
681 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800682 inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime);
683 inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime);
684 inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime);
685 inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec);
686 inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec);
687 inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800689 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 /*
692 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
693 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
694 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695
696 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000697 memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
698 sizeof(ufs2_inode->ui_u2.ui_addr));
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700699 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000700 memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
Duane Griffinb12903f2009-01-08 22:43:50 +0000701 sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
702 ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 }
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700704 return 0;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700705}
706
David Howellsb55c4602008-02-07 00:15:48 -0800707struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700708{
David Howellsb55c4602008-02-07 00:15:48 -0800709 struct ufs_inode_info *ufsi;
710 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700711 struct buffer_head * bh;
David Howellsb55c4602008-02-07 00:15:48 -0800712 struct inode *inode;
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700713 int err;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700714
David Howellsb55c4602008-02-07 00:15:48 -0800715 UFSD("ENTER, ino %lu\n", ino);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700716
David Howellsb55c4602008-02-07 00:15:48 -0800717 if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700718 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
David Howellsb55c4602008-02-07 00:15:48 -0800719 ino);
720 return ERR_PTR(-EIO);
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700721 }
722
David Howellsb55c4602008-02-07 00:15:48 -0800723 inode = iget_locked(sb, ino);
724 if (!inode)
725 return ERR_PTR(-ENOMEM);
726 if (!(inode->i_state & I_NEW))
727 return inode;
728
729 ufsi = UFS_I(inode);
730
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700731 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
732 if (!bh) {
733 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n",
734 inode->i_ino);
735 goto bad_inode;
736 }
737 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
738 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
739
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700740 err = ufs2_read_inode(inode,
741 ufs2_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700742 } else {
743 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
744
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700745 err = ufs1_read_inode(inode,
746 ufs_inode + ufs_inotofsbo(inode->i_ino));
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700747 }
748
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700749 if (err)
750 goto bad_inode;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700751 inode->i_version++;
752 ufsi->i_lastfrag =
753 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
754 ufsi->i_dir_start_lookup = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 ufsi->i_osync = 0;
756
Evgeniy Dushistov826843a2006-06-25 05:47:21 -0700757 ufs_set_inode_ops(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
759 brelse(bh);
760
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700761 UFSD("EXIT\n");
David Howellsb55c4602008-02-07 00:15:48 -0800762 unlock_new_inode(inode);
763 return inode;
Evgeniy Dushistov05f225d2006-06-27 02:53:59 -0700764
765bad_inode:
David Howellsb55c4602008-02-07 00:15:48 -0800766 iget_failed(inode);
767 return ERR_PTR(-EIO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768}
769
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800770static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771{
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800772 struct super_block *sb = inode->i_sb;
773 struct ufs_inode_info *ufsi = UFS_I(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774
775 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
776 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
777
778 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid);
779 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid);
780
781 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
782 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
783 ufs_inode->ui_atime.tv_usec = 0;
784 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec);
785 ufs_inode->ui_ctime.tv_usec = 0;
786 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec);
787 ufs_inode->ui_mtime.tv_usec = 0;
788 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
789 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800790 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800792 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow);
794 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag);
795 }
796
797 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
798 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
799 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0];
800 } else if (inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000801 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
802 sizeof(ufs_inode->ui_u2.ui_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 }
804 else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000805 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
806 sizeof(ufs_inode->ui_u2.ui_symlink));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 }
808
809 if (!inode->i_nlink)
810 memset (ufs_inode, 0, sizeof(struct ufs_inode));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800811}
812
813static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
814{
815 struct super_block *sb = inode->i_sb;
816 struct ufs_inode_info *ufsi = UFS_I(inode);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800817
818 UFSD("ENTER\n");
819 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
820 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
821
822 ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid);
823 ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
824
825 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800826 ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
827 ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec);
828 ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec);
829 ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec);
830 ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec);
831 ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec);
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800832
833 ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
834 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
835 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
836
837 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
838 /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */
839 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0];
840 } else if (inode->i_blocks) {
Duane Griffinf33219b2009-01-08 22:43:49 +0000841 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
842 sizeof(ufs_inode->ui_u2.ui_addr));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800843 } else {
Duane Griffinf33219b2009-01-08 22:43:49 +0000844 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
845 sizeof(ufs_inode->ui_u2.ui_symlink));
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800846 }
847
848 if (!inode->i_nlink)
849 memset (ufs_inode, 0, sizeof(struct ufs2_inode));
850 UFSD("EXIT\n");
851}
852
853static int ufs_update_inode(struct inode * inode, int do_sync)
854{
855 struct super_block *sb = inode->i_sb;
856 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
857 struct buffer_head * bh;
858
859 UFSD("ENTER, ino %lu\n", inode->i_ino);
860
861 if (inode->i_ino < UFS_ROOTINO ||
862 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
863 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
864 return -1;
865 }
866
867 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
868 if (!bh) {
869 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
870 return -1;
871 }
872 if (uspi->fs_magic == UFS2_MAGIC) {
873 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
874
875 ufs2_update_inode(inode,
876 ufs2_inode + ufs_inotofsbo(inode->i_ino));
877 } else {
878 struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
879
880 ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
881 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
883 mark_buffer_dirty(bh);
884 if (do_sync)
885 sync_dirty_buffer(bh);
886 brelse (bh);
887
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700888 UFSD("EXIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889 return 0;
890}
891
Christoph Hellwiga9185b42010-03-05 09:21:37 +0100892int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893{
894 int ret;
895 lock_kernel();
Christoph Hellwiga9185b42010-03-05 09:21:37 +0100896 ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 unlock_kernel();
898 return ret;
899}
900
901int ufs_sync_inode (struct inode *inode)
902{
903 return ufs_update_inode (inode, 1);
904}
905
906void ufs_delete_inode (struct inode * inode)
907{
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700908 loff_t old_i_size;
909
Mark Fashehfef26652005-09-09 13:01:31 -0700910 truncate_inode_pages(&inode->i_data, 0);
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700911 if (is_bad_inode(inode))
912 goto no_delete;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
914 lock_kernel();
915 mark_inode_dirty(inode);
916 ufs_update_inode(inode, IS_SYNC(inode));
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700917 old_i_size = inode->i_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 inode->i_size = 0;
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -0700919 if (inode->i_blocks && ufs_truncate(inode, old_i_size))
Harvey Harrison9746077a72008-04-28 02:16:17 -0700920 ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 ufs_free_inode (inode);
922 unlock_kernel();
Evgeniy Dushistov07a0cfe2007-04-16 22:53:24 -0700923 return;
924no_delete:
925 clear_inode(inode); /* We must guarantee clearing of inode... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926}