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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
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> | |
1da177e4 LT |
29 | |
30 | #include <linux/errno.h> | |
31 | #include <linux/fs.h> | |
1da177e4 LT |
32 | #include <linux/time.h> |
33 | #include <linux/stat.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/mm.h> | |
1da177e4 | 36 | #include <linux/buffer_head.h> |
a9185b41 | 37 | #include <linux/writeback.h> |
1da177e4 | 38 | |
e5420598 | 39 | #include "ufs_fs.h" |
bcd6d4ec | 40 | #include "ufs.h" |
1da177e4 LT |
41 | #include "swab.h" |
42 | #include "util.h" | |
43 | ||
788257d6 | 44 | static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock); |
138bb68a | 45 | |
1da177e4 LT |
46 | static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4]) |
47 | { | |
48 | struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; | |
49 | int ptrs = uspi->s_apb; | |
50 | int ptrs_bits = uspi->s_apbshift; | |
51 | const long direct_blocks = UFS_NDADDR, | |
52 | indirect_blocks = ptrs, | |
53 | double_blocks = (1 << (ptrs_bits * 2)); | |
54 | int n = 0; | |
55 | ||
56 | ||
abf5d15f | 57 | UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); |
37044c86 | 58 | if (i_block < direct_blocks) { |
1da177e4 LT |
59 | offsets[n++] = i_block; |
60 | } else if ((i_block -= direct_blocks) < indirect_blocks) { | |
61 | offsets[n++] = UFS_IND_BLOCK; | |
62 | offsets[n++] = i_block; | |
63 | } else if ((i_block -= indirect_blocks) < double_blocks) { | |
64 | offsets[n++] = UFS_DIND_BLOCK; | |
65 | offsets[n++] = i_block >> ptrs_bits; | |
66 | offsets[n++] = i_block & (ptrs - 1); | |
67 | } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { | |
68 | offsets[n++] = UFS_TIND_BLOCK; | |
69 | offsets[n++] = i_block >> (ptrs_bits * 2); | |
70 | offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); | |
71 | offsets[n++] = i_block & (ptrs - 1); | |
72 | } else { | |
73 | ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); | |
74 | } | |
75 | return n; | |
76 | } | |
77 | ||
78 | /* | |
79 | * Returns the location of the fragment from | |
25985edc | 80 | * the beginning of the filesystem. |
1da177e4 LT |
81 | */ |
82 | ||
788257d6 | 83 | static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock) |
1da177e4 LT |
84 | { |
85 | struct ufs_inode_info *ufsi = UFS_I(inode); | |
86 | struct super_block *sb = inode->i_sb; | |
87 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
88 | u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; | |
89 | int shift = uspi->s_apbshift-uspi->s_fpbshift; | |
90 | sector_t offsets[4], *p; | |
91 | int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); | |
92 | u64 ret = 0L; | |
93 | __fs32 block; | |
94 | __fs64 u2_block = 0L; | |
95 | unsigned flags = UFS_SB(sb)->s_flags; | |
96 | u64 temp = 0L; | |
97 | ||
abf5d15f | 98 | UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); |
7256d819 AM |
99 | UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", |
100 | uspi->s_fpbshift, uspi->s_apbmask, | |
101 | (unsigned long long)mask); | |
1da177e4 LT |
102 | |
103 | if (depth == 0) | |
104 | return 0; | |
105 | ||
106 | p = offsets; | |
107 | ||
788257d6 AB |
108 | if (needs_lock) |
109 | lock_ufs(sb); | |
1da177e4 LT |
110 | if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
111 | goto ufs2; | |
112 | ||
113 | block = ufsi->i_u1.i_data[*p++]; | |
114 | if (!block) | |
115 | goto out; | |
116 | while (--depth) { | |
117 | struct buffer_head *bh; | |
118 | sector_t n = *p++; | |
119 | ||
120 | bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); | |
121 | if (!bh) | |
122 | goto out; | |
123 | block = ((__fs32 *) bh->b_data)[n & mask]; | |
124 | brelse (bh); | |
125 | if (!block) | |
126 | goto out; | |
127 | } | |
128 | ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask)); | |
129 | goto out; | |
130 | ufs2: | |
131 | u2_block = ufsi->i_u1.u2_i_data[*p++]; | |
132 | if (!u2_block) | |
133 | goto out; | |
134 | ||
135 | ||
136 | while (--depth) { | |
137 | struct buffer_head *bh; | |
138 | sector_t n = *p++; | |
139 | ||
140 | ||
141 | temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block); | |
142 | bh = sb_bread(sb, temp +(u64) (n>>shift)); | |
143 | if (!bh) | |
144 | goto out; | |
145 | u2_block = ((__fs64 *)bh->b_data)[n & mask]; | |
146 | brelse(bh); | |
147 | if (!u2_block) | |
148 | goto out; | |
149 | } | |
150 | temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block); | |
151 | ret = temp + (u64) (frag & uspi->s_fpbmask); | |
152 | ||
153 | out: | |
788257d6 AB |
154 | if (needs_lock) |
155 | unlock_ufs(sb); | |
1da177e4 LT |
156 | return ret; |
157 | } | |
158 | ||
022a6dc5 ED |
159 | /** |
160 | * ufs_inode_getfrag() - allocate new fragment(s) | |
edc023ca FF |
161 | * @inode: pointer to inode |
162 | * @fragment: number of `fragment' which hold pointer | |
022a6dc5 | 163 | * to new allocated fragment(s) |
edc023ca FF |
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, | |
022a6dc5 | 168 | * NULL if we allocate not data(indirect blocks for example). |
edc023ca FF |
169 | * @new: we set it if we allocate new block |
170 | * @locked_page: for ufs_new_fragments() | |
022a6dc5 ED |
171 | */ |
172 | static struct buffer_head * | |
54fb996a | 173 | ufs_inode_getfrag(struct inode *inode, u64 fragment, |
022a6dc5 ED |
174 | sector_t new_fragment, unsigned int required, int *err, |
175 | long *phys, int *new, struct page *locked_page) | |
1da177e4 LT |
176 | { |
177 | struct ufs_inode_info *ufsi = UFS_I(inode); | |
022a6dc5 ED |
178 | struct super_block *sb = inode->i_sb; |
179 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
1da177e4 | 180 | struct buffer_head * result; |
54fb996a ED |
181 | unsigned blockoff, lastblockoff; |
182 | u64 tmp, goal, lastfrag, block, lastblock; | |
183 | void *p, *p2; | |
1da177e4 | 184 | |
54fb996a ED |
185 | UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " |
186 | "metadata %d\n", inode->i_ino, (unsigned long long)fragment, | |
022a6dc5 | 187 | (unsigned long long)new_fragment, required, !phys); |
1da177e4 | 188 | |
1da177e4 LT |
189 | /* 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); | |
54fb996a ED |
196 | p = ufs_get_direct_data_ptr(uspi, ufsi, block); |
197 | ||
1da177e4 LT |
198 | goal = 0; |
199 | ||
200 | repeat: | |
54fb996a ED |
201 | tmp = ufs_data_ptr_to_cpu(sb, p); |
202 | ||
1da177e4 LT |
203 | lastfrag = ufsi->i_lastfrag; |
204 | if (tmp && fragment < lastfrag) { | |
022a6dc5 | 205 | if (!phys) { |
1da177e4 | 206 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
54fb996a ED |
207 | if (tmp == ufs_data_ptr_to_cpu(sb, p)) { |
208 | UFSD("EXIT, result %llu\n", | |
209 | (unsigned long long)tmp + blockoff); | |
1da177e4 LT |
210 | return result; |
211 | } | |
212 | brelse (result); | |
213 | goto repeat; | |
214 | } else { | |
4b25a37e | 215 | *phys = uspi->s_sbbase + tmp + blockoff; |
1da177e4 LT |
216 | 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) { | |
54fb996a ED |
230 | 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); | |
1da177e4 LT |
235 | if (!tmp) { |
236 | if (lastfrag != ufsi->i_lastfrag) | |
237 | goto repeat; | |
238 | else | |
239 | return NULL; | |
240 | } | |
241 | lastfrag = ufsi->i_lastfrag; | |
242 | ||
243 | } | |
54fb996a ED |
244 | tmp = ufs_data_ptr_to_cpu(sb, |
245 | ufs_get_direct_data_ptr(uspi, ufsi, | |
246 | lastblock)); | |
c37336b0 ED |
247 | if (tmp) |
248 | goal = tmp + uspi->s_fpb; | |
1da177e4 | 249 | tmp = ufs_new_fragments (inode, p, fragment - blockoff, |
6ef4d6bf | 250 | goal, required + blockoff, |
a685e26f ED |
251 | err, |
252 | phys != NULL ? locked_page : NULL); | |
54fb996a | 253 | } else if (lastblock == block) { |
1da177e4 LT |
254 | /* |
255 | * We will extend last allocated block | |
256 | */ | |
54fb996a ED |
257 | tmp = ufs_new_fragments(inode, p, fragment - |
258 | (blockoff - lastblockoff), | |
259 | ufs_data_ptr_to_cpu(sb, p), | |
260 | required + (blockoff - lastblockoff), | |
a685e26f | 261 | err, phys != NULL ? locked_page : NULL); |
c37336b0 | 262 | } else /* (lastblock > block) */ { |
1da177e4 LT |
263 | /* |
264 | * We will allocate new block before last allocated block | |
265 | */ | |
c37336b0 | 266 | if (block) { |
54fb996a ED |
267 | tmp = ufs_data_ptr_to_cpu(sb, |
268 | ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); | |
c37336b0 ED |
269 | if (tmp) |
270 | goal = tmp + uspi->s_fpb; | |
271 | } | |
6ef4d6bf | 272 | tmp = ufs_new_fragments(inode, p, fragment - blockoff, |
a685e26f ED |
273 | goal, uspi->s_fpb, err, |
274 | phys != NULL ? locked_page : NULL); | |
1da177e4 LT |
275 | } |
276 | if (!tmp) { | |
54fb996a | 277 | if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || |
1da177e4 LT |
278 | (blockoff && lastfrag != ufsi->i_lastfrag)) |
279 | goto repeat; | |
280 | *err = -ENOSPC; | |
281 | return NULL; | |
282 | } | |
283 | ||
022a6dc5 | 284 | if (!phys) { |
4b25a37e | 285 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
1da177e4 | 286 | } else { |
4b25a37e | 287 | *phys = uspi->s_sbbase + tmp + blockoff; |
1da177e4 LT |
288 | 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); | |
54fb996a | 297 | UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); |
1da177e4 LT |
298 | return result; |
299 | ||
300 | /* This part : To be implemented .... | |
301 | Required only for writing, not required for READ-ONLY. | |
302 | ufs2: | |
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 | ||
309 | repeat2: | |
310 | tmp = fs32_to_cpu(sb, *p); | |
311 | lastfrag = ufsi->i_lastfrag; | |
312 | ||
313 | */ | |
314 | } | |
315 | ||
022a6dc5 ED |
316 | /** |
317 | * ufs_inode_getblock() - allocate new block | |
edc023ca FF |
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 | |
022a6dc5 | 321 | * to new allocated block |
edc023ca | 322 | * @new_fragment: number of new allocated fragment |
022a6dc5 | 323 | * (block will hold this fragment and also uspi->s_fpb-1) |
edc023ca FF |
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() | |
022a6dc5 ED |
328 | */ |
329 | static struct buffer_head * | |
330 | ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, | |
54fb996a | 331 | u64 fragment, sector_t new_fragment, int *err, |
022a6dc5 | 332 | long *phys, int *new, struct page *locked_page) |
1da177e4 | 333 | { |
022a6dc5 ED |
334 | struct super_block *sb = inode->i_sb; |
335 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
1da177e4 | 336 | struct buffer_head * result; |
54fb996a ED |
337 | unsigned blockoff; |
338 | u64 tmp, goal, block; | |
339 | void *p; | |
1da177e4 | 340 | |
1da177e4 LT |
341 | block = ufs_fragstoblks (fragment); |
342 | blockoff = ufs_fragnum (fragment); | |
343 | ||
54fb996a ED |
344 | 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); | |
1da177e4 LT |
347 | |
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 | } | |
54fb996a ED |
357 | if (uspi->fs_magic == UFS2_MAGIC) |
358 | p = (__fs64 *)bh->b_data + block; | |
359 | else | |
360 | p = (__fs32 *)bh->b_data + block; | |
1da177e4 | 361 | repeat: |
54fb996a | 362 | tmp = ufs_data_ptr_to_cpu(sb, p); |
1da177e4 | 363 | if (tmp) { |
022a6dc5 | 364 | if (!phys) { |
1da177e4 | 365 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
54fb996a | 366 | if (tmp == ufs_data_ptr_to_cpu(sb, p)) |
1da177e4 LT |
367 | goto out; |
368 | brelse (result); | |
369 | goto repeat; | |
370 | } else { | |
4b25a37e | 371 | *phys = uspi->s_sbbase + tmp + blockoff; |
1da177e4 LT |
372 | goto out; |
373 | } | |
374 | } | |
375 | ||
54fb996a ED |
376 | 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])))) | |
1da177e4 LT |
379 | goal = tmp + uspi->s_fpb; |
380 | else | |
381 | goal = bh->b_blocknr + uspi->s_fpb; | |
6ef4d6bf ED |
382 | tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, |
383 | uspi->s_fpb, err, locked_page); | |
1da177e4 | 384 | if (!tmp) { |
54fb996a | 385 | if (ufs_data_ptr_to_cpu(sb, p)) |
1da177e4 LT |
386 | goto repeat; |
387 | goto out; | |
388 | } | |
389 | ||
c9a27b5d | 390 | |
022a6dc5 | 391 | if (!phys) { |
4b25a37e | 392 | result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
1da177e4 | 393 | } else { |
4b25a37e | 394 | *phys = uspi->s_sbbase + tmp + blockoff; |
1da177e4 LT |
395 | *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); | |
54fb996a | 403 | UFSD("result %llu\n", (unsigned long long)tmp + blockoff); |
1da177e4 LT |
404 | out: |
405 | brelse (bh); | |
abf5d15f | 406 | UFSD("EXIT\n"); |
1da177e4 LT |
407 | return result; |
408 | } | |
409 | ||
022a6dc5 | 410 | /** |
7422caa5 | 411 | * ufs_getfrag_block() - `get_block_t' function, interface between UFS and |
022a6dc5 | 412 | * readpage, writepage and so on |
1da177e4 LT |
413 | */ |
414 | ||
022a6dc5 | 415 | int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) |
1da177e4 LT |
416 | { |
417 | struct super_block * sb = inode->i_sb; | |
788257d6 AB |
418 | struct ufs_sb_info * sbi = UFS_SB(sb); |
419 | struct ufs_sb_private_info * uspi = sbi->s_uspi; | |
1da177e4 LT |
420 | struct buffer_head * bh; |
421 | int ret, err, new; | |
422 | unsigned long ptr,phys; | |
423 | u64 phys64 = 0; | |
788257d6 | 424 | bool needs_lock = (sbi->mutex_owner != current); |
1da177e4 LT |
425 | |
426 | if (!create) { | |
788257d6 | 427 | phys64 = ufs_frag_map(inode, fragment, needs_lock); |
7256d819 | 428 | UFSD("phys64 = %llu\n", (unsigned long long)phys64); |
1da177e4 LT |
429 | if (phys64) |
430 | map_bh(bh_result, sb, phys64); | |
431 | return 0; | |
432 | } | |
433 | ||
434 | /* This code entered only while writing ....? */ | |
435 | ||
436 | err = -EIO; | |
437 | new = 0; | |
438 | ret = 0; | |
439 | bh = NULL; | |
440 | ||
788257d6 AB |
441 | if (needs_lock) |
442 | lock_ufs(sb); | |
1da177e4 | 443 | |
abf5d15f | 444 | UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); |
1da177e4 LT |
445 | if (fragment > |
446 | ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) | |
447 | << uspi->s_fpbshift)) | |
448 | goto abort_too_big; | |
449 | ||
450 | err = 0; | |
451 | ptr = fragment; | |
452 | ||
453 | /* | |
454 | * ok, these macros clean the logic up a bit and make | |
455 | * it much more readable: | |
456 | */ | |
457 | #define GET_INODE_DATABLOCK(x) \ | |
a685e26f ED |
458 | ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ |
459 | bh_result->b_page) | |
1da177e4 | 460 | #define GET_INODE_PTR(x) \ |
a685e26f ED |
461 | ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ |
462 | bh_result->b_page) | |
1da177e4 | 463 | #define GET_INDIRECT_DATABLOCK(x) \ |
022a6dc5 | 464 | ufs_inode_getblock(inode, bh, x, fragment, \ |
d63b7090 | 465 | &err, &phys, &new, bh_result->b_page) |
1da177e4 | 466 | #define GET_INDIRECT_PTR(x) \ |
022a6dc5 | 467 | ufs_inode_getblock(inode, bh, x, fragment, \ |
d63b7090 | 468 | &err, NULL, NULL, NULL) |
1da177e4 LT |
469 | |
470 | if (ptr < UFS_NDIR_FRAGMENT) { | |
471 | bh = GET_INODE_DATABLOCK(ptr); | |
472 | goto out; | |
473 | } | |
474 | ptr -= UFS_NDIR_FRAGMENT; | |
475 | if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { | |
476 | bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); | |
477 | goto get_indirect; | |
478 | } | |
479 | ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); | |
480 | if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { | |
481 | bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); | |
482 | goto get_double; | |
483 | } | |
484 | ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); | |
485 | bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); | |
486 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); | |
487 | get_double: | |
488 | bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); | |
489 | get_indirect: | |
490 | bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); | |
491 | ||
492 | #undef GET_INODE_DATABLOCK | |
493 | #undef GET_INODE_PTR | |
494 | #undef GET_INDIRECT_DATABLOCK | |
495 | #undef GET_INDIRECT_PTR | |
496 | ||
497 | out: | |
498 | if (err) | |
499 | goto abort; | |
500 | if (new) | |
501 | set_buffer_new(bh_result); | |
502 | map_bh(bh_result, sb, phys); | |
503 | abort: | |
788257d6 AB |
504 | if (needs_lock) |
505 | unlock_ufs(sb); | |
506 | ||
1da177e4 LT |
507 | return err; |
508 | ||
1da177e4 LT |
509 | abort_too_big: |
510 | ufs_warning(sb, "ufs_get_block", "block > big"); | |
511 | goto abort; | |
512 | } | |
513 | ||
1da177e4 LT |
514 | static int ufs_writepage(struct page *page, struct writeback_control *wbc) |
515 | { | |
516 | return block_write_full_page(page,ufs_getfrag_block,wbc); | |
517 | } | |
82b9d1d0 | 518 | |
1da177e4 LT |
519 | static int ufs_readpage(struct file *file, struct page *page) |
520 | { | |
521 | return block_read_full_page(page,ufs_getfrag_block); | |
522 | } | |
82b9d1d0 | 523 | |
f4e420dc | 524 | int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) |
1da177e4 | 525 | { |
6e1db88d | 526 | return __block_write_begin(page, pos, len, ufs_getfrag_block); |
1da177e4 | 527 | } |
82b9d1d0 | 528 | |
83f6e371 MS |
529 | static void ufs_write_failed(struct address_space *mapping, loff_t to) |
530 | { | |
531 | struct inode *inode = mapping->host; | |
532 | ||
3b7a3a05 | 533 | if (to > inode->i_size) { |
7caef267 | 534 | truncate_pagecache(inode, inode->i_size); |
3b7a3a05 AV |
535 | ufs_truncate_blocks(inode); |
536 | } | |
83f6e371 MS |
537 | } |
538 | ||
82b9d1d0 NP |
539 | static int ufs_write_begin(struct file *file, struct address_space *mapping, |
540 | loff_t pos, unsigned len, unsigned flags, | |
541 | struct page **pagep, void **fsdata) | |
542 | { | |
155130a4 CH |
543 | int ret; |
544 | ||
545 | ret = block_write_begin(mapping, pos, len, flags, pagep, | |
f4e420dc | 546 | ufs_getfrag_block); |
83f6e371 MS |
547 | if (unlikely(ret)) |
548 | ufs_write_failed(mapping, pos + len); | |
155130a4 CH |
549 | |
550 | return ret; | |
82b9d1d0 NP |
551 | } |
552 | ||
3b7a3a05 AV |
553 | static int ufs_write_end(struct file *file, struct address_space *mapping, |
554 | loff_t pos, unsigned len, unsigned copied, | |
555 | struct page *page, void *fsdata) | |
556 | { | |
557 | int ret; | |
558 | ||
559 | ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); | |
560 | if (ret < len) | |
561 | ufs_write_failed(mapping, pos + len); | |
562 | return ret; | |
563 | } | |
564 | ||
1da177e4 LT |
565 | static sector_t ufs_bmap(struct address_space *mapping, sector_t block) |
566 | { | |
567 | return generic_block_bmap(mapping,block,ufs_getfrag_block); | |
568 | } | |
82b9d1d0 | 569 | |
f5e54d6e | 570 | const struct address_space_operations ufs_aops = { |
1da177e4 LT |
571 | .readpage = ufs_readpage, |
572 | .writepage = ufs_writepage, | |
82b9d1d0 | 573 | .write_begin = ufs_write_begin, |
3b7a3a05 | 574 | .write_end = ufs_write_end, |
1da177e4 LT |
575 | .bmap = ufs_bmap |
576 | }; | |
577 | ||
826843a3 ED |
578 | static void ufs_set_inode_ops(struct inode *inode) |
579 | { | |
580 | if (S_ISREG(inode->i_mode)) { | |
581 | inode->i_op = &ufs_file_inode_operations; | |
582 | inode->i_fop = &ufs_file_operations; | |
583 | inode->i_mapping->a_ops = &ufs_aops; | |
584 | } else if (S_ISDIR(inode->i_mode)) { | |
585 | inode->i_op = &ufs_dir_inode_operations; | |
586 | inode->i_fop = &ufs_dir_operations; | |
587 | inode->i_mapping->a_ops = &ufs_aops; | |
588 | } else if (S_ISLNK(inode->i_mode)) { | |
4b8061a6 | 589 | if (!inode->i_blocks) { |
826843a3 | 590 | inode->i_op = &ufs_fast_symlink_inode_operations; |
4b8061a6 AV |
591 | inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; |
592 | } else { | |
311b9549 | 593 | inode->i_op = &ufs_symlink_inode_operations; |
826843a3 ED |
594 | inode->i_mapping->a_ops = &ufs_aops; |
595 | } | |
596 | } else | |
597 | init_special_inode(inode, inode->i_mode, | |
598 | ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); | |
599 | } | |
600 | ||
07a0cfec | 601 | static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) |
1da177e4 LT |
602 | { |
603 | struct ufs_inode_info *ufsi = UFS_I(inode); | |
05f225dc | 604 | struct super_block *sb = inode->i_sb; |
6a9a06d9 | 605 | umode_t mode; |
1da177e4 LT |
606 | |
607 | /* | |
608 | * Copy data to the in-core inode. | |
609 | */ | |
610 | inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); | |
bfe86848 | 611 | set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); |
07a0cfec | 612 | if (inode->i_nlink == 0) { |
1da177e4 | 613 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
07a0cfec ED |
614 | return -1; |
615 | } | |
1da177e4 LT |
616 | |
617 | /* | |
618 | * Linux now has 32-bit uid and gid, so we can support EFT. | |
619 | */ | |
72235465 EB |
620 | i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); |
621 | i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); | |
1da177e4 LT |
622 | |
623 | inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); | |
624 | inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); | |
625 | inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); | |
626 | inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); | |
627 | inode->i_mtime.tv_nsec = 0; | |
628 | inode->i_atime.tv_nsec = 0; | |
629 | inode->i_ctime.tv_nsec = 0; | |
630 | inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); | |
3313e292 | 631 | inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); |
1da177e4 | 632 | ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); |
1da177e4 LT |
633 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
634 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); | |
05f225dc | 635 | |
1da177e4 LT |
636 | |
637 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { | |
f33219b7 DG |
638 | memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, |
639 | sizeof(ufs_inode->ui_u2.ui_addr)); | |
dd187a26 | 640 | } else { |
f33219b7 | 641 | memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, |
b12903f1 DG |
642 | sizeof(ufs_inode->ui_u2.ui_symlink) - 1); |
643 | ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; | |
1da177e4 | 644 | } |
07a0cfec | 645 | return 0; |
05f225dc | 646 | } |
1da177e4 | 647 | |
07a0cfec | 648 | static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) |
05f225dc ED |
649 | { |
650 | struct ufs_inode_info *ufsi = UFS_I(inode); | |
651 | struct super_block *sb = inode->i_sb; | |
6a9a06d9 | 652 | umode_t mode; |
1da177e4 | 653 | |
abf5d15f | 654 | UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); |
1da177e4 LT |
655 | /* |
656 | * Copy data to the in-core inode. | |
657 | */ | |
658 | inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); | |
bfe86848 | 659 | set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); |
07a0cfec | 660 | if (inode->i_nlink == 0) { |
1da177e4 | 661 | ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
07a0cfec ED |
662 | return -1; |
663 | } | |
1da177e4 LT |
664 | |
665 | /* | |
666 | * Linux now has 32-bit uid and gid, so we can support EFT. | |
667 | */ | |
72235465 EB |
668 | i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); |
669 | i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); | |
1da177e4 LT |
670 | |
671 | inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); | |
2189850f ED |
672 | inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); |
673 | inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); | |
674 | inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); | |
675 | inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); | |
676 | inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); | |
677 | inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); | |
1da177e4 | 678 | inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); |
3313e292 | 679 | inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); |
1da177e4 | 680 | ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); |
1da177e4 LT |
681 | /* |
682 | ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); | |
683 | ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); | |
684 | */ | |
1da177e4 LT |
685 | |
686 | if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { | |
f33219b7 DG |
687 | memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, |
688 | sizeof(ufs2_inode->ui_u2.ui_addr)); | |
05f225dc | 689 | } else { |
f33219b7 | 690 | memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, |
b12903f1 DG |
691 | sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); |
692 | ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; | |
1da177e4 | 693 | } |
07a0cfec | 694 | return 0; |
05f225dc ED |
695 | } |
696 | ||
b55c460d | 697 | struct inode *ufs_iget(struct super_block *sb, unsigned long ino) |
05f225dc | 698 | { |
b55c460d DH |
699 | struct ufs_inode_info *ufsi; |
700 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
05f225dc | 701 | struct buffer_head * bh; |
b55c460d | 702 | struct inode *inode; |
07a0cfec | 703 | int err; |
05f225dc | 704 | |
b55c460d | 705 | UFSD("ENTER, ino %lu\n", ino); |
05f225dc | 706 | |
b55c460d | 707 | if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { |
05f225dc | 708 | ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", |
b55c460d DH |
709 | ino); |
710 | return ERR_PTR(-EIO); | |
05f225dc ED |
711 | } |
712 | ||
b55c460d DH |
713 | inode = iget_locked(sb, ino); |
714 | if (!inode) | |
715 | return ERR_PTR(-ENOMEM); | |
716 | if (!(inode->i_state & I_NEW)) | |
717 | return inode; | |
718 | ||
719 | ufsi = UFS_I(inode); | |
720 | ||
05f225dc ED |
721 | bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); |
722 | if (!bh) { | |
723 | ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", | |
724 | inode->i_ino); | |
725 | goto bad_inode; | |
726 | } | |
727 | if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { | |
728 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; | |
729 | ||
07a0cfec ED |
730 | err = ufs2_read_inode(inode, |
731 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); | |
05f225dc ED |
732 | } else { |
733 | struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; | |
734 | ||
07a0cfec ED |
735 | err = ufs1_read_inode(inode, |
736 | ufs_inode + ufs_inotofsbo(inode->i_ino)); | |
05f225dc ED |
737 | } |
738 | ||
07a0cfec ED |
739 | if (err) |
740 | goto bad_inode; | |
05f225dc ED |
741 | inode->i_version++; |
742 | ufsi->i_lastfrag = | |
743 | (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; | |
744 | ufsi->i_dir_start_lookup = 0; | |
1da177e4 LT |
745 | ufsi->i_osync = 0; |
746 | ||
826843a3 | 747 | ufs_set_inode_ops(inode); |
1da177e4 LT |
748 | |
749 | brelse(bh); | |
750 | ||
abf5d15f | 751 | UFSD("EXIT\n"); |
b55c460d DH |
752 | unlock_new_inode(inode); |
753 | return inode; | |
05f225dc ED |
754 | |
755 | bad_inode: | |
b55c460d DH |
756 | iget_failed(inode); |
757 | return ERR_PTR(-EIO); | |
1da177e4 LT |
758 | } |
759 | ||
3313e292 | 760 | static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) |
1da177e4 | 761 | { |
3313e292 ED |
762 | struct super_block *sb = inode->i_sb; |
763 | struct ufs_inode_info *ufsi = UFS_I(inode); | |
1da177e4 LT |
764 | |
765 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); | |
766 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); | |
767 | ||
72235465 EB |
768 | ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); |
769 | ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); | |
1da177e4 LT |
770 | |
771 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); | |
772 | ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); | |
773 | ufs_inode->ui_atime.tv_usec = 0; | |
774 | ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); | |
775 | ufs_inode->ui_ctime.tv_usec = 0; | |
776 | ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); | |
777 | ufs_inode->ui_mtime.tv_usec = 0; | |
778 | ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); | |
779 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); | |
3313e292 | 780 | ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); |
1da177e4 | 781 | |
3313e292 | 782 | if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { |
1da177e4 LT |
783 | ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); |
784 | ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); | |
785 | } | |
786 | ||
787 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { | |
788 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ | |
789 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; | |
790 | } else if (inode->i_blocks) { | |
f33219b7 DG |
791 | memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, |
792 | sizeof(ufs_inode->ui_u2.ui_addr)); | |
1da177e4 LT |
793 | } |
794 | else { | |
f33219b7 DG |
795 | memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, |
796 | sizeof(ufs_inode->ui_u2.ui_symlink)); | |
1da177e4 LT |
797 | } |
798 | ||
799 | if (!inode->i_nlink) | |
800 | memset (ufs_inode, 0, sizeof(struct ufs_inode)); | |
3313e292 ED |
801 | } |
802 | ||
803 | static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) | |
804 | { | |
805 | struct super_block *sb = inode->i_sb; | |
806 | struct ufs_inode_info *ufsi = UFS_I(inode); | |
3313e292 ED |
807 | |
808 | UFSD("ENTER\n"); | |
809 | ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); | |
810 | ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); | |
811 | ||
72235465 EB |
812 | ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); |
813 | ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); | |
3313e292 ED |
814 | |
815 | ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); | |
2189850f ED |
816 | ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); |
817 | ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); | |
818 | ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); | |
819 | ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); | |
820 | ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); | |
821 | ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); | |
3313e292 ED |
822 | |
823 | ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); | |
824 | ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); | |
825 | ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); | |
826 | ||
827 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { | |
828 | /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ | |
829 | ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; | |
830 | } else if (inode->i_blocks) { | |
f33219b7 DG |
831 | memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, |
832 | sizeof(ufs_inode->ui_u2.ui_addr)); | |
3313e292 | 833 | } else { |
f33219b7 DG |
834 | memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, |
835 | sizeof(ufs_inode->ui_u2.ui_symlink)); | |
3313e292 ED |
836 | } |
837 | ||
838 | if (!inode->i_nlink) | |
839 | memset (ufs_inode, 0, sizeof(struct ufs2_inode)); | |
840 | UFSD("EXIT\n"); | |
841 | } | |
842 | ||
843 | static int ufs_update_inode(struct inode * inode, int do_sync) | |
844 | { | |
845 | struct super_block *sb = inode->i_sb; | |
846 | struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; | |
847 | struct buffer_head * bh; | |
848 | ||
849 | UFSD("ENTER, ino %lu\n", inode->i_ino); | |
850 | ||
851 | if (inode->i_ino < UFS_ROOTINO || | |
852 | inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { | |
853 | ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); | |
854 | return -1; | |
855 | } | |
856 | ||
857 | bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); | |
858 | if (!bh) { | |
859 | ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); | |
860 | return -1; | |
861 | } | |
862 | if (uspi->fs_magic == UFS2_MAGIC) { | |
863 | struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; | |
864 | ||
865 | ufs2_update_inode(inode, | |
866 | ufs2_inode + ufs_inotofsbo(inode->i_ino)); | |
867 | } else { | |
868 | struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; | |
869 | ||
870 | ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); | |
871 | } | |
1da177e4 LT |
872 | |
873 | mark_buffer_dirty(bh); | |
874 | if (do_sync) | |
875 | sync_dirty_buffer(bh); | |
876 | brelse (bh); | |
877 | ||
abf5d15f | 878 | UFSD("EXIT\n"); |
1da177e4 LT |
879 | return 0; |
880 | } | |
881 | ||
a9185b41 | 882 | int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) |
1da177e4 | 883 | { |
f3e0f3da | 884 | return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); |
1da177e4 LT |
885 | } |
886 | ||
887 | int ufs_sync_inode (struct inode *inode) | |
888 | { | |
889 | return ufs_update_inode (inode, 1); | |
890 | } | |
891 | ||
58e8268c | 892 | void ufs_evict_inode(struct inode * inode) |
1da177e4 | 893 | { |
58e8268c AV |
894 | int want_delete = 0; |
895 | ||
896 | if (!inode->i_nlink && !is_bad_inode(inode)) | |
897 | want_delete = 1; | |
10e5dce0 | 898 | |
91b0abe3 | 899 | truncate_inode_pages_final(&inode->i_data); |
58e8268c | 900 | if (want_delete) { |
58e8268c | 901 | inode->i_size = 0; |
d622f167 AV |
902 | if (inode->i_blocks) |
903 | ufs_truncate_blocks(inode); | |
58e8268c AV |
904 | } |
905 | ||
906 | invalidate_inode_buffers(inode); | |
dbd5768f | 907 | clear_inode(inode); |
58e8268c | 908 | |
f3e0f3da | 909 | if (want_delete) |
9ef7db7f | 910 | ufs_free_inode(inode); |
1da177e4 | 911 | } |