]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * inode.c | |
3 | * | |
4 | * PURPOSE | |
5 | * Inode handling routines for the OSTA-UDF(tm) filesystem. | |
6 | * | |
1da177e4 LT |
7 | * COPYRIGHT |
8 | * This file is distributed under the terms of the GNU General Public | |
9 | * License (GPL). Copies of the GPL can be obtained from: | |
10 | * ftp://prep.ai.mit.edu/pub/gnu/GPL | |
11 | * Each contributing author retains all rights to their own work. | |
12 | * | |
13 | * (C) 1998 Dave Boynton | |
14 | * (C) 1998-2004 Ben Fennema | |
15 | * (C) 1999-2000 Stelias Computing Inc | |
16 | * | |
17 | * HISTORY | |
18 | * | |
19 | * 10/04/98 dgb Added rudimentary directory functions | |
20 | * 10/07/98 Fully working udf_block_map! It works! | |
21 | * 11/25/98 bmap altered to better support extents | |
4b11111a MS |
22 | * 12/06/98 blf partition support in udf_iget, udf_block_map |
23 | * and udf_read_inode | |
1da177e4 LT |
24 | * 12/12/98 rewrote udf_block_map to handle next extents and descs across |
25 | * block boundaries (which is not actually allowed) | |
26 | * 12/20/98 added support for strategy 4096 | |
27 | * 03/07/99 rewrote udf_block_map (again) | |
28 | * New funcs, inode_bmap, udf_next_aext | |
29 | * 04/19/99 Support for writing device EA's for major/minor # | |
30 | */ | |
31 | ||
32 | #include "udfdecl.h" | |
33 | #include <linux/mm.h> | |
34 | #include <linux/smp_lock.h> | |
35 | #include <linux/module.h> | |
36 | #include <linux/pagemap.h> | |
37 | #include <linux/buffer_head.h> | |
38 | #include <linux/writeback.h> | |
39 | #include <linux/slab.h> | |
f845fced | 40 | #include <linux/crc-itu-t.h> |
1da177e4 LT |
41 | |
42 | #include "udf_i.h" | |
43 | #include "udf_sb.h" | |
44 | ||
45 | MODULE_AUTHOR("Ben Fennema"); | |
46 | MODULE_DESCRIPTION("Universal Disk Format Filesystem"); | |
47 | MODULE_LICENSE("GPL"); | |
48 | ||
49 | #define EXTENT_MERGE_SIZE 5 | |
50 | ||
51 | static mode_t udf_convert_permissions(struct fileEntry *); | |
52 | static int udf_update_inode(struct inode *, int); | |
53 | static void udf_fill_inode(struct inode *, struct buffer_head *); | |
647bd61a | 54 | static int udf_alloc_i_data(struct inode *inode, size_t size); |
60448b1d | 55 | static struct buffer_head *inode_getblk(struct inode *, sector_t, int *, |
1ed16171 | 56 | sector_t *, int *); |
ff116fc8 | 57 | static int8_t udf_insert_aext(struct inode *, struct extent_position, |
5ca4e4be | 58 | struct kernel_lb_addr, uint32_t); |
1da177e4 | 59 | static void udf_split_extents(struct inode *, int *, int, int, |
5ca4e4be | 60 | struct kernel_long_ad[EXTENT_MERGE_SIZE], int *); |
1da177e4 | 61 | static void udf_prealloc_extents(struct inode *, int, int, |
5ca4e4be | 62 | struct kernel_long_ad[EXTENT_MERGE_SIZE], int *); |
1da177e4 | 63 | static void udf_merge_extents(struct inode *, |
5ca4e4be | 64 | struct kernel_long_ad[EXTENT_MERGE_SIZE], int *); |
1da177e4 | 65 | static void udf_update_extents(struct inode *, |
5ca4e4be | 66 | struct kernel_long_ad[EXTENT_MERGE_SIZE], int, int, |
cb00ea35 | 67 | struct extent_position *); |
1da177e4 LT |
68 | static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int); |
69 | ||
b1e32126 | 70 | |
cb00ea35 | 71 | void udf_delete_inode(struct inode *inode) |
1da177e4 | 72 | { |
fef26658 MF |
73 | truncate_inode_pages(&inode->i_data, 0); |
74 | ||
1da177e4 LT |
75 | if (is_bad_inode(inode)) |
76 | goto no_delete; | |
77 | ||
78 | inode->i_size = 0; | |
79 | udf_truncate(inode); | |
80 | lock_kernel(); | |
81 | ||
82 | udf_update_inode(inode, IS_SYNC(inode)); | |
83 | udf_free_inode(inode); | |
84 | ||
85 | unlock_kernel(); | |
86 | return; | |
28de7948 CG |
87 | |
88 | no_delete: | |
1da177e4 LT |
89 | clear_inode(inode); |
90 | } | |
91 | ||
74584ae5 | 92 | /* |
81056dd0 JK |
93 | * If we are going to release inode from memory, we truncate last inode extent |
94 | * to proper length. We could use drop_inode() but it's called under inode_lock | |
95 | * and thus we cannot mark inode dirty there. We use clear_inode() but we have | |
96 | * to make sure to write inode as it's not written automatically. | |
74584ae5 | 97 | */ |
1da177e4 LT |
98 | void udf_clear_inode(struct inode *inode) |
99 | { | |
2c948b3f JK |
100 | struct udf_inode_info *iinfo = UDF_I(inode); |
101 | ||
102 | if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB && | |
103 | inode->i_size != iinfo->i_lenExtents) { | |
104 | printk(KERN_WARNING "UDF-fs (%s): Inode %lu (mode %o) has " | |
105 | "inode size %llu different from extent lenght %llu. " | |
106 | "Filesystem need not be standards compliant.\n", | |
107 | inode->i_sb->s_id, inode->i_ino, inode->i_mode, | |
108 | (unsigned long long)inode->i_size, | |
109 | (unsigned long long)iinfo->i_lenExtents); | |
1da177e4 | 110 | } |
48d6d8ff MS |
111 | kfree(iinfo->i_ext.i_data); |
112 | iinfo->i_ext.i_data = NULL; | |
1da177e4 LT |
113 | } |
114 | ||
115 | static int udf_writepage(struct page *page, struct writeback_control *wbc) | |
116 | { | |
117 | return block_write_full_page(page, udf_get_block, wbc); | |
118 | } | |
119 | ||
120 | static int udf_readpage(struct file *file, struct page *page) | |
121 | { | |
122 | return block_read_full_page(page, udf_get_block); | |
123 | } | |
124 | ||
be021ee4 NP |
125 | static int udf_write_begin(struct file *file, struct address_space *mapping, |
126 | loff_t pos, unsigned len, unsigned flags, | |
127 | struct page **pagep, void **fsdata) | |
1da177e4 | 128 | { |
be021ee4 NP |
129 | *pagep = NULL; |
130 | return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, | |
131 | udf_get_block); | |
1da177e4 LT |
132 | } |
133 | ||
134 | static sector_t udf_bmap(struct address_space *mapping, sector_t block) | |
135 | { | |
cb00ea35 | 136 | return generic_block_bmap(mapping, block, udf_get_block); |
1da177e4 LT |
137 | } |
138 | ||
f5e54d6e | 139 | const struct address_space_operations udf_aops = { |
28de7948 CG |
140 | .readpage = udf_readpage, |
141 | .writepage = udf_writepage, | |
142 | .sync_page = block_sync_page, | |
be021ee4 NP |
143 | .write_begin = udf_write_begin, |
144 | .write_end = generic_write_end, | |
28de7948 | 145 | .bmap = udf_bmap, |
1da177e4 LT |
146 | }; |
147 | ||
cb00ea35 | 148 | void udf_expand_file_adinicb(struct inode *inode, int newsize, int *err) |
1da177e4 LT |
149 | { |
150 | struct page *page; | |
151 | char *kaddr; | |
48d6d8ff | 152 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
153 | struct writeback_control udf_wbc = { |
154 | .sync_mode = WB_SYNC_NONE, | |
155 | .nr_to_write = 1, | |
156 | }; | |
157 | ||
158 | /* from now on we have normal address_space methods */ | |
159 | inode->i_data.a_ops = &udf_aops; | |
160 | ||
48d6d8ff | 161 | if (!iinfo->i_lenAlloc) { |
1da177e4 | 162 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
48d6d8ff | 163 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
1da177e4 | 164 | else |
48d6d8ff | 165 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
1da177e4 LT |
166 | mark_inode_dirty(inode); |
167 | return; | |
168 | } | |
169 | ||
170 | page = grab_cache_page(inode->i_mapping, 0); | |
cd7619d6 MM |
171 | BUG_ON(!PageLocked(page)); |
172 | ||
cb00ea35 | 173 | if (!PageUptodate(page)) { |
1da177e4 | 174 | kaddr = kmap(page); |
48d6d8ff MS |
175 | memset(kaddr + iinfo->i_lenAlloc, 0x00, |
176 | PAGE_CACHE_SIZE - iinfo->i_lenAlloc); | |
177 | memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr, | |
178 | iinfo->i_lenAlloc); | |
1da177e4 LT |
179 | flush_dcache_page(page); |
180 | SetPageUptodate(page); | |
181 | kunmap(page); | |
182 | } | |
48d6d8ff MS |
183 | memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00, |
184 | iinfo->i_lenAlloc); | |
185 | iinfo->i_lenAlloc = 0; | |
1da177e4 | 186 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
48d6d8ff | 187 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
1da177e4 | 188 | else |
48d6d8ff | 189 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
1da177e4 LT |
190 | |
191 | inode->i_data.a_ops->writepage(page, &udf_wbc); | |
192 | page_cache_release(page); | |
193 | ||
194 | mark_inode_dirty(inode); | |
195 | } | |
196 | ||
cb00ea35 CG |
197 | struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block, |
198 | int *err) | |
1da177e4 LT |
199 | { |
200 | int newblock; | |
ff116fc8 | 201 | struct buffer_head *dbh = NULL; |
5ca4e4be | 202 | struct kernel_lb_addr eloc; |
1da177e4 | 203 | uint8_t alloctype; |
ff116fc8 | 204 | struct extent_position epos; |
1da177e4 LT |
205 | |
206 | struct udf_fileident_bh sfibh, dfibh; | |
af793295 JK |
207 | loff_t f_pos = udf_ext0_offset(inode); |
208 | int size = udf_ext0_offset(inode) + inode->i_size; | |
1da177e4 | 209 | struct fileIdentDesc cfi, *sfi, *dfi; |
48d6d8ff | 210 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
211 | |
212 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) | |
213 | alloctype = ICBTAG_FLAG_AD_SHORT; | |
214 | else | |
215 | alloctype = ICBTAG_FLAG_AD_LONG; | |
216 | ||
cb00ea35 | 217 | if (!inode->i_size) { |
48d6d8ff | 218 | iinfo->i_alloc_type = alloctype; |
1da177e4 LT |
219 | mark_inode_dirty(inode); |
220 | return NULL; | |
221 | } | |
222 | ||
223 | /* alloc block, and copy data to it */ | |
224 | *block = udf_new_block(inode->i_sb, inode, | |
48d6d8ff MS |
225 | iinfo->i_location.partitionReferenceNum, |
226 | iinfo->i_location.logicalBlockNum, err); | |
1da177e4 LT |
227 | if (!(*block)) |
228 | return NULL; | |
229 | newblock = udf_get_pblock(inode->i_sb, *block, | |
48d6d8ff | 230 | iinfo->i_location.partitionReferenceNum, |
c0b34438 | 231 | 0); |
1da177e4 LT |
232 | if (!newblock) |
233 | return NULL; | |
234 | dbh = udf_tgetblk(inode->i_sb, newblock); | |
235 | if (!dbh) | |
236 | return NULL; | |
237 | lock_buffer(dbh); | |
238 | memset(dbh->b_data, 0x00, inode->i_sb->s_blocksize); | |
239 | set_buffer_uptodate(dbh); | |
240 | unlock_buffer(dbh); | |
241 | mark_buffer_dirty_inode(dbh, inode); | |
242 | ||
4b11111a | 243 | sfibh.soffset = sfibh.eoffset = |
af793295 | 244 | f_pos & (inode->i_sb->s_blocksize - 1); |
ff116fc8 | 245 | sfibh.sbh = sfibh.ebh = NULL; |
1da177e4 LT |
246 | dfibh.soffset = dfibh.eoffset = 0; |
247 | dfibh.sbh = dfibh.ebh = dbh; | |
af793295 | 248 | while (f_pos < size) { |
48d6d8ff | 249 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; |
4b11111a MS |
250 | sfi = udf_fileident_read(inode, &f_pos, &sfibh, &cfi, NULL, |
251 | NULL, NULL, NULL); | |
cb00ea35 | 252 | if (!sfi) { |
3bf25cb4 | 253 | brelse(dbh); |
1da177e4 LT |
254 | return NULL; |
255 | } | |
48d6d8ff | 256 | iinfo->i_alloc_type = alloctype; |
1da177e4 LT |
257 | sfi->descTag.tagLocation = cpu_to_le32(*block); |
258 | dfibh.soffset = dfibh.eoffset; | |
259 | dfibh.eoffset += (sfibh.eoffset - sfibh.soffset); | |
260 | dfi = (struct fileIdentDesc *)(dbh->b_data + dfibh.soffset); | |
261 | if (udf_write_fi(inode, sfi, dfi, &dfibh, sfi->impUse, | |
4b11111a MS |
262 | sfi->fileIdent + |
263 | le16_to_cpu(sfi->lengthOfImpUse))) { | |
48d6d8ff | 264 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; |
3bf25cb4 | 265 | brelse(dbh); |
1da177e4 LT |
266 | return NULL; |
267 | } | |
268 | } | |
269 | mark_buffer_dirty_inode(dbh, inode); | |
270 | ||
48d6d8ff MS |
271 | memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0, |
272 | iinfo->i_lenAlloc); | |
273 | iinfo->i_lenAlloc = 0; | |
1da177e4 | 274 | eloc.logicalBlockNum = *block; |
4b11111a | 275 | eloc.partitionReferenceNum = |
48d6d8ff | 276 | iinfo->i_location.partitionReferenceNum; |
2c948b3f | 277 | iinfo->i_lenExtents = inode->i_size; |
ff116fc8 | 278 | epos.bh = NULL; |
48d6d8ff | 279 | epos.block = iinfo->i_location; |
ff116fc8 | 280 | epos.offset = udf_file_entry_alloc_offset(inode); |
2c948b3f | 281 | udf_add_aext(inode, &epos, &eloc, inode->i_size, 0); |
1da177e4 LT |
282 | /* UniqueID stuff */ |
283 | ||
3bf25cb4 | 284 | brelse(epos.bh); |
1da177e4 LT |
285 | mark_inode_dirty(inode); |
286 | return dbh; | |
287 | } | |
288 | ||
cb00ea35 CG |
289 | static int udf_get_block(struct inode *inode, sector_t block, |
290 | struct buffer_head *bh_result, int create) | |
1da177e4 LT |
291 | { |
292 | int err, new; | |
293 | struct buffer_head *bh; | |
1ed16171 | 294 | sector_t phys = 0; |
48d6d8ff | 295 | struct udf_inode_info *iinfo; |
1da177e4 | 296 | |
cb00ea35 | 297 | if (!create) { |
1da177e4 LT |
298 | phys = udf_block_map(inode, block); |
299 | if (phys) | |
300 | map_bh(bh_result, inode->i_sb, phys); | |
301 | return 0; | |
302 | } | |
303 | ||
304 | err = -EIO; | |
305 | new = 0; | |
306 | bh = NULL; | |
307 | ||
308 | lock_kernel(); | |
309 | ||
48d6d8ff MS |
310 | iinfo = UDF_I(inode); |
311 | if (block == iinfo->i_next_alloc_block + 1) { | |
312 | iinfo->i_next_alloc_block++; | |
313 | iinfo->i_next_alloc_goal++; | |
1da177e4 LT |
314 | } |
315 | ||
316 | err = 0; | |
317 | ||
318 | bh = inode_getblk(inode, block, &err, &phys, &new); | |
2c2111c2 | 319 | BUG_ON(bh); |
1da177e4 LT |
320 | if (err) |
321 | goto abort; | |
2c2111c2 | 322 | BUG_ON(!phys); |
1da177e4 LT |
323 | |
324 | if (new) | |
325 | set_buffer_new(bh_result); | |
326 | map_bh(bh_result, inode->i_sb, phys); | |
28de7948 CG |
327 | |
328 | abort: | |
1da177e4 LT |
329 | unlock_kernel(); |
330 | return err; | |
1da177e4 LT |
331 | } |
332 | ||
cb00ea35 CG |
333 | static struct buffer_head *udf_getblk(struct inode *inode, long block, |
334 | int create, int *err) | |
1da177e4 | 335 | { |
28de7948 | 336 | struct buffer_head *bh; |
1da177e4 LT |
337 | struct buffer_head dummy; |
338 | ||
339 | dummy.b_state = 0; | |
340 | dummy.b_blocknr = -1000; | |
341 | *err = udf_get_block(inode, block, &dummy, create); | |
cb00ea35 | 342 | if (!*err && buffer_mapped(&dummy)) { |
1da177e4 | 343 | bh = sb_getblk(inode->i_sb, dummy.b_blocknr); |
cb00ea35 | 344 | if (buffer_new(&dummy)) { |
1da177e4 LT |
345 | lock_buffer(bh); |
346 | memset(bh->b_data, 0x00, inode->i_sb->s_blocksize); | |
347 | set_buffer_uptodate(bh); | |
348 | unlock_buffer(bh); | |
349 | mark_buffer_dirty_inode(bh, inode); | |
350 | } | |
351 | return bh; | |
352 | } | |
28de7948 | 353 | |
1da177e4 LT |
354 | return NULL; |
355 | } | |
356 | ||
31170b6a JK |
357 | /* Extend the file by 'blocks' blocks, return the number of extents added */ |
358 | int udf_extend_file(struct inode *inode, struct extent_position *last_pos, | |
5ca4e4be | 359 | struct kernel_long_ad *last_ext, sector_t blocks) |
31170b6a JK |
360 | { |
361 | sector_t add; | |
362 | int count = 0, fake = !(last_ext->extLength & UDF_EXTENT_LENGTH_MASK); | |
363 | struct super_block *sb = inode->i_sb; | |
5ca4e4be | 364 | struct kernel_lb_addr prealloc_loc = {}; |
31170b6a | 365 | int prealloc_len = 0; |
48d6d8ff | 366 | struct udf_inode_info *iinfo; |
31170b6a JK |
367 | |
368 | /* The previous extent is fake and we should not extend by anything | |
369 | * - there's nothing to do... */ | |
370 | if (!blocks && fake) | |
371 | return 0; | |
28de7948 | 372 | |
48d6d8ff | 373 | iinfo = UDF_I(inode); |
31170b6a JK |
374 | /* Round the last extent up to a multiple of block size */ |
375 | if (last_ext->extLength & (sb->s_blocksize - 1)) { | |
376 | last_ext->extLength = | |
28de7948 CG |
377 | (last_ext->extLength & UDF_EXTENT_FLAG_MASK) | |
378 | (((last_ext->extLength & UDF_EXTENT_LENGTH_MASK) + | |
379 | sb->s_blocksize - 1) & ~(sb->s_blocksize - 1)); | |
48d6d8ff MS |
380 | iinfo->i_lenExtents = |
381 | (iinfo->i_lenExtents + sb->s_blocksize - 1) & | |
28de7948 | 382 | ~(sb->s_blocksize - 1); |
31170b6a | 383 | } |
28de7948 | 384 | |
31170b6a | 385 | /* Last extent are just preallocated blocks? */ |
4b11111a MS |
386 | if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) == |
387 | EXT_NOT_RECORDED_ALLOCATED) { | |
31170b6a JK |
388 | /* Save the extent so that we can reattach it to the end */ |
389 | prealloc_loc = last_ext->extLocation; | |
390 | prealloc_len = last_ext->extLength; | |
391 | /* Mark the extent as a hole */ | |
392 | last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | | |
28de7948 | 393 | (last_ext->extLength & UDF_EXTENT_LENGTH_MASK); |
31170b6a | 394 | last_ext->extLocation.logicalBlockNum = 0; |
4b11111a | 395 | last_ext->extLocation.partitionReferenceNum = 0; |
31170b6a | 396 | } |
28de7948 | 397 | |
31170b6a | 398 | /* Can we merge with the previous extent? */ |
4b11111a MS |
399 | if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) == |
400 | EXT_NOT_RECORDED_NOT_ALLOCATED) { | |
401 | add = ((1 << 30) - sb->s_blocksize - | |
402 | (last_ext->extLength & UDF_EXTENT_LENGTH_MASK)) >> | |
403 | sb->s_blocksize_bits; | |
31170b6a JK |
404 | if (add > blocks) |
405 | add = blocks; | |
406 | blocks -= add; | |
407 | last_ext->extLength += add << sb->s_blocksize_bits; | |
408 | } | |
409 | ||
410 | if (fake) { | |
97e961fd | 411 | udf_add_aext(inode, last_pos, &last_ext->extLocation, |
cb00ea35 | 412 | last_ext->extLength, 1); |
31170b6a | 413 | count++; |
4b11111a | 414 | } else |
97e961fd | 415 | udf_write_aext(inode, last_pos, &last_ext->extLocation, |
4b11111a | 416 | last_ext->extLength, 1); |
28de7948 | 417 | |
31170b6a JK |
418 | /* Managed to do everything necessary? */ |
419 | if (!blocks) | |
420 | goto out; | |
421 | ||
422 | /* All further extents will be NOT_RECORDED_NOT_ALLOCATED */ | |
423 | last_ext->extLocation.logicalBlockNum = 0; | |
4b11111a | 424 | last_ext->extLocation.partitionReferenceNum = 0; |
28de7948 | 425 | add = (1 << (30-sb->s_blocksize_bits)) - 1; |
4b11111a MS |
426 | last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | |
427 | (add << sb->s_blocksize_bits); | |
28de7948 | 428 | |
31170b6a JK |
429 | /* Create enough extents to cover the whole hole */ |
430 | while (blocks > add) { | |
431 | blocks -= add; | |
97e961fd | 432 | if (udf_add_aext(inode, last_pos, &last_ext->extLocation, |
cb00ea35 | 433 | last_ext->extLength, 1) == -1) |
31170b6a JK |
434 | return -1; |
435 | count++; | |
436 | } | |
437 | if (blocks) { | |
438 | last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | | |
28de7948 | 439 | (blocks << sb->s_blocksize_bits); |
97e961fd | 440 | if (udf_add_aext(inode, last_pos, &last_ext->extLocation, |
cb00ea35 | 441 | last_ext->extLength, 1) == -1) |
31170b6a JK |
442 | return -1; |
443 | count++; | |
444 | } | |
28de7948 CG |
445 | |
446 | out: | |
31170b6a JK |
447 | /* Do we have some preallocated blocks saved? */ |
448 | if (prealloc_len) { | |
97e961fd | 449 | if (udf_add_aext(inode, last_pos, &prealloc_loc, |
4b11111a | 450 | prealloc_len, 1) == -1) |
31170b6a JK |
451 | return -1; |
452 | last_ext->extLocation = prealloc_loc; | |
453 | last_ext->extLength = prealloc_len; | |
454 | count++; | |
455 | } | |
28de7948 | 456 | |
31170b6a | 457 | /* last_pos should point to the last written extent... */ |
48d6d8ff | 458 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) |
5ca4e4be | 459 | last_pos->offset -= sizeof(struct short_ad); |
48d6d8ff | 460 | else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) |
5ca4e4be | 461 | last_pos->offset -= sizeof(struct long_ad); |
31170b6a JK |
462 | else |
463 | return -1; | |
28de7948 | 464 | |
31170b6a JK |
465 | return count; |
466 | } | |
467 | ||
cb00ea35 | 468 | static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, |
1ed16171 | 469 | int *err, sector_t *phys, int *new) |
1da177e4 | 470 | { |
31170b6a | 471 | static sector_t last_block; |
ff116fc8 | 472 | struct buffer_head *result = NULL; |
5ca4e4be | 473 | struct kernel_long_ad laarr[EXTENT_MERGE_SIZE]; |
ff116fc8 | 474 | struct extent_position prev_epos, cur_epos, next_epos; |
1da177e4 | 475 | int count = 0, startnum = 0, endnum = 0; |
85d71244 | 476 | uint32_t elen = 0, tmpelen; |
5ca4e4be | 477 | struct kernel_lb_addr eloc, tmpeloc; |
1da177e4 | 478 | int c = 1; |
60448b1d JK |
479 | loff_t lbcount = 0, b_off = 0; |
480 | uint32_t newblocknum, newblock; | |
481 | sector_t offset = 0; | |
1da177e4 | 482 | int8_t etype; |
48d6d8ff MS |
483 | struct udf_inode_info *iinfo = UDF_I(inode); |
484 | int goal = 0, pgoal = iinfo->i_location.logicalBlockNum; | |
31170b6a | 485 | int lastblock = 0; |
1da177e4 | 486 | |
ff116fc8 | 487 | prev_epos.offset = udf_file_entry_alloc_offset(inode); |
48d6d8ff | 488 | prev_epos.block = iinfo->i_location; |
ff116fc8 JK |
489 | prev_epos.bh = NULL; |
490 | cur_epos = next_epos = prev_epos; | |
28de7948 | 491 | b_off = (loff_t)block << inode->i_sb->s_blocksize_bits; |
1da177e4 LT |
492 | |
493 | /* find the extent which contains the block we are looking for. | |
cb00ea35 CG |
494 | alternate between laarr[0] and laarr[1] for locations of the |
495 | current extent, and the previous extent */ | |
496 | do { | |
497 | if (prev_epos.bh != cur_epos.bh) { | |
3bf25cb4 JK |
498 | brelse(prev_epos.bh); |
499 | get_bh(cur_epos.bh); | |
ff116fc8 | 500 | prev_epos.bh = cur_epos.bh; |
1da177e4 | 501 | } |
cb00ea35 | 502 | if (cur_epos.bh != next_epos.bh) { |
3bf25cb4 JK |
503 | brelse(cur_epos.bh); |
504 | get_bh(next_epos.bh); | |
ff116fc8 | 505 | cur_epos.bh = next_epos.bh; |
1da177e4 LT |
506 | } |
507 | ||
508 | lbcount += elen; | |
509 | ||
ff116fc8 JK |
510 | prev_epos.block = cur_epos.block; |
511 | cur_epos.block = next_epos.block; | |
1da177e4 | 512 | |
ff116fc8 JK |
513 | prev_epos.offset = cur_epos.offset; |
514 | cur_epos.offset = next_epos.offset; | |
1da177e4 | 515 | |
4b11111a MS |
516 | etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 1); |
517 | if (etype == -1) | |
1da177e4 LT |
518 | break; |
519 | ||
520 | c = !c; | |
521 | ||
522 | laarr[c].extLength = (etype << 30) | elen; | |
523 | laarr[c].extLocation = eloc; | |
524 | ||
525 | if (etype != (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) | |
526 | pgoal = eloc.logicalBlockNum + | |
28de7948 CG |
527 | ((elen + inode->i_sb->s_blocksize - 1) >> |
528 | inode->i_sb->s_blocksize_bits); | |
1da177e4 | 529 | |
cb00ea35 | 530 | count++; |
1da177e4 LT |
531 | } while (lbcount + elen <= b_off); |
532 | ||
533 | b_off -= lbcount; | |
534 | offset = b_off >> inode->i_sb->s_blocksize_bits; | |
85d71244 JK |
535 | /* |
536 | * Move prev_epos and cur_epos into indirect extent if we are at | |
537 | * the pointer to it | |
538 | */ | |
539 | udf_next_aext(inode, &prev_epos, &tmpeloc, &tmpelen, 0); | |
540 | udf_next_aext(inode, &cur_epos, &tmpeloc, &tmpelen, 0); | |
1da177e4 LT |
541 | |
542 | /* if the extent is allocated and recorded, return the block | |
cb00ea35 | 543 | if the extent is not a multiple of the blocksize, round up */ |
1da177e4 | 544 | |
cb00ea35 CG |
545 | if (etype == (EXT_RECORDED_ALLOCATED >> 30)) { |
546 | if (elen & (inode->i_sb->s_blocksize - 1)) { | |
1da177e4 | 547 | elen = EXT_RECORDED_ALLOCATED | |
28de7948 CG |
548 | ((elen + inode->i_sb->s_blocksize - 1) & |
549 | ~(inode->i_sb->s_blocksize - 1)); | |
97e961fd | 550 | etype = udf_write_aext(inode, &cur_epos, &eloc, elen, 1); |
1da177e4 | 551 | } |
3bf25cb4 JK |
552 | brelse(prev_epos.bh); |
553 | brelse(cur_epos.bh); | |
554 | brelse(next_epos.bh); | |
97e961fd | 555 | newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset); |
1da177e4 LT |
556 | *phys = newblock; |
557 | return NULL; | |
558 | } | |
559 | ||
31170b6a JK |
560 | last_block = block; |
561 | /* Are we beyond EOF? */ | |
cb00ea35 | 562 | if (etype == -1) { |
31170b6a JK |
563 | int ret; |
564 | ||
565 | if (count) { | |
566 | if (c) | |
567 | laarr[0] = laarr[1]; | |
568 | startnum = 1; | |
cb00ea35 | 569 | } else { |
31170b6a | 570 | /* Create a fake extent when there's not one */ |
4b11111a | 571 | memset(&laarr[0].extLocation, 0x00, |
5ca4e4be | 572 | sizeof(struct kernel_lb_addr)); |
31170b6a | 573 | laarr[0].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED; |
4b11111a MS |
574 | /* Will udf_extend_file() create real extent from |
575 | a fake one? */ | |
31170b6a JK |
576 | startnum = (offset > 0); |
577 | } | |
578 | /* Create extents for the hole between EOF and offset */ | |
579 | ret = udf_extend_file(inode, &prev_epos, laarr, offset); | |
580 | if (ret == -1) { | |
581 | brelse(prev_epos.bh); | |
582 | brelse(cur_epos.bh); | |
583 | brelse(next_epos.bh); | |
584 | /* We don't really know the error here so we just make | |
585 | * something up */ | |
586 | *err = -ENOSPC; | |
587 | return NULL; | |
588 | } | |
589 | c = 0; | |
590 | offset = 0; | |
591 | count += ret; | |
592 | /* We are not covered by a preallocated extent? */ | |
4b11111a MS |
593 | if ((laarr[0].extLength & UDF_EXTENT_FLAG_MASK) != |
594 | EXT_NOT_RECORDED_ALLOCATED) { | |
31170b6a JK |
595 | /* Is there any real extent? - otherwise we overwrite |
596 | * the fake one... */ | |
597 | if (count) | |
598 | c = !c; | |
599 | laarr[c].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | | |
28de7948 | 600 | inode->i_sb->s_blocksize; |
4b11111a | 601 | memset(&laarr[c].extLocation, 0x00, |
5ca4e4be | 602 | sizeof(struct kernel_lb_addr)); |
cb00ea35 CG |
603 | count++; |
604 | endnum++; | |
31170b6a | 605 | } |
cb00ea35 | 606 | endnum = c + 1; |
1da177e4 | 607 | lastblock = 1; |
cb00ea35 | 608 | } else { |
1da177e4 LT |
609 | endnum = startnum = ((count > 2) ? 2 : count); |
610 | ||
4b11111a MS |
611 | /* if the current extent is in position 0, |
612 | swap it with the previous */ | |
cb00ea35 | 613 | if (!c && count != 1) { |
31170b6a JK |
614 | laarr[2] = laarr[0]; |
615 | laarr[0] = laarr[1]; | |
616 | laarr[1] = laarr[2]; | |
617 | c = 1; | |
618 | } | |
1da177e4 | 619 | |
4b11111a MS |
620 | /* if the current block is located in an extent, |
621 | read the next extent */ | |
622 | etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 0); | |
623 | if (etype != -1) { | |
cb00ea35 CG |
624 | laarr[c + 1].extLength = (etype << 30) | elen; |
625 | laarr[c + 1].extLocation = eloc; | |
626 | count++; | |
627 | startnum++; | |
628 | endnum++; | |
4b11111a | 629 | } else |
1da177e4 LT |
630 | lastblock = 1; |
631 | } | |
1da177e4 LT |
632 | |
633 | /* if the current extent is not recorded but allocated, get the | |
28de7948 | 634 | * block in the extent corresponding to the requested block */ |
4b11111a | 635 | if ((laarr[c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30)) |
1da177e4 | 636 | newblocknum = laarr[c].extLocation.logicalBlockNum + offset; |
4b11111a | 637 | else { /* otherwise, allocate a new block */ |
48d6d8ff MS |
638 | if (iinfo->i_next_alloc_block == block) |
639 | goal = iinfo->i_next_alloc_goal; | |
1da177e4 | 640 | |
cb00ea35 | 641 | if (!goal) { |
4b11111a | 642 | if (!(goal = pgoal)) /* XXX: what was intended here? */ |
48d6d8ff | 643 | goal = iinfo->i_location.logicalBlockNum + 1; |
1da177e4 LT |
644 | } |
645 | ||
4b11111a | 646 | newblocknum = udf_new_block(inode->i_sb, inode, |
48d6d8ff | 647 | iinfo->i_location.partitionReferenceNum, |
4b11111a MS |
648 | goal, err); |
649 | if (!newblocknum) { | |
3bf25cb4 | 650 | brelse(prev_epos.bh); |
1da177e4 LT |
651 | *err = -ENOSPC; |
652 | return NULL; | |
653 | } | |
48d6d8ff | 654 | iinfo->i_lenExtents += inode->i_sb->s_blocksize; |
1da177e4 LT |
655 | } |
656 | ||
4b11111a MS |
657 | /* if the extent the requsted block is located in contains multiple |
658 | * blocks, split the extent into at most three extents. blocks prior | |
659 | * to requested block, requested block, and blocks after requested | |
660 | * block */ | |
1da177e4 LT |
661 | udf_split_extents(inode, &c, offset, newblocknum, laarr, &endnum); |
662 | ||
663 | #ifdef UDF_PREALLOCATE | |
81056dd0 JK |
664 | /* We preallocate blocks only for regular files. It also makes sense |
665 | * for directories but there's a problem when to drop the | |
666 | * preallocation. We might use some delayed work for that but I feel | |
667 | * it's overengineering for a filesystem like UDF. */ | |
668 | if (S_ISREG(inode->i_mode)) | |
669 | udf_prealloc_extents(inode, c, lastblock, laarr, &endnum); | |
1da177e4 LT |
670 | #endif |
671 | ||
672 | /* merge any continuous blocks in laarr */ | |
673 | udf_merge_extents(inode, laarr, &endnum); | |
674 | ||
675 | /* write back the new extents, inserting new extents if the new number | |
28de7948 CG |
676 | * of extents is greater than the old number, and deleting extents if |
677 | * the new number of extents is less than the old number */ | |
ff116fc8 | 678 | udf_update_extents(inode, laarr, startnum, endnum, &prev_epos); |
1da177e4 | 679 | |
3bf25cb4 | 680 | brelse(prev_epos.bh); |
1da177e4 | 681 | |
4b11111a | 682 | newblock = udf_get_pblock(inode->i_sb, newblocknum, |
48d6d8ff | 683 | iinfo->i_location.partitionReferenceNum, 0); |
4b11111a | 684 | if (!newblock) |
1da177e4 | 685 | return NULL; |
1da177e4 LT |
686 | *phys = newblock; |
687 | *err = 0; | |
688 | *new = 1; | |
48d6d8ff MS |
689 | iinfo->i_next_alloc_block = block; |
690 | iinfo->i_next_alloc_goal = newblocknum; | |
1da177e4 LT |
691 | inode->i_ctime = current_fs_time(inode->i_sb); |
692 | ||
693 | if (IS_SYNC(inode)) | |
694 | udf_sync_inode(inode); | |
695 | else | |
696 | mark_inode_dirty(inode); | |
28de7948 | 697 | |
1da177e4 LT |
698 | return result; |
699 | } | |
700 | ||
cb00ea35 CG |
701 | static void udf_split_extents(struct inode *inode, int *c, int offset, |
702 | int newblocknum, | |
5ca4e4be | 703 | struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
cb00ea35 | 704 | int *endnum) |
1da177e4 | 705 | { |
4b11111a MS |
706 | unsigned long blocksize = inode->i_sb->s_blocksize; |
707 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; | |
708 | ||
1da177e4 | 709 | if ((laarr[*c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30) || |
4b11111a MS |
710 | (laarr[*c].extLength >> 30) == |
711 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) { | |
1da177e4 LT |
712 | int curr = *c; |
713 | int blen = ((laarr[curr].extLength & UDF_EXTENT_LENGTH_MASK) + | |
4b11111a | 714 | blocksize - 1) >> blocksize_bits; |
1da177e4 LT |
715 | int8_t etype = (laarr[curr].extLength >> 30); |
716 | ||
4b11111a | 717 | if (blen == 1) |
28de7948 | 718 | ; |
4b11111a | 719 | else if (!offset || blen == offset + 1) { |
cb00ea35 CG |
720 | laarr[curr + 2] = laarr[curr + 1]; |
721 | laarr[curr + 1] = laarr[curr]; | |
722 | } else { | |
723 | laarr[curr + 3] = laarr[curr + 1]; | |
724 | laarr[curr + 2] = laarr[curr + 1] = laarr[curr]; | |
725 | } | |
726 | ||
727 | if (offset) { | |
728 | if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) { | |
4b11111a | 729 | udf_free_blocks(inode->i_sb, inode, |
97e961fd | 730 | &laarr[curr].extLocation, |
4b11111a MS |
731 | 0, offset); |
732 | laarr[curr].extLength = | |
733 | EXT_NOT_RECORDED_NOT_ALLOCATED | | |
734 | (offset << blocksize_bits); | |
1da177e4 | 735 | laarr[curr].extLocation.logicalBlockNum = 0; |
4b11111a MS |
736 | laarr[curr].extLocation. |
737 | partitionReferenceNum = 0; | |
738 | } else | |
1da177e4 | 739 | laarr[curr].extLength = (etype << 30) | |
4b11111a | 740 | (offset << blocksize_bits); |
cb00ea35 CG |
741 | curr++; |
742 | (*c)++; | |
743 | (*endnum)++; | |
1da177e4 | 744 | } |
647bd61a | 745 | |
1da177e4 LT |
746 | laarr[curr].extLocation.logicalBlockNum = newblocknum; |
747 | if (etype == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) | |
748 | laarr[curr].extLocation.partitionReferenceNum = | |
c0b34438 | 749 | UDF_I(inode)->i_location.partitionReferenceNum; |
1da177e4 | 750 | laarr[curr].extLength = EXT_RECORDED_ALLOCATED | |
4b11111a | 751 | blocksize; |
cb00ea35 | 752 | curr++; |
1da177e4 | 753 | |
cb00ea35 | 754 | if (blen != offset + 1) { |
1da177e4 | 755 | if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) |
4b11111a MS |
756 | laarr[curr].extLocation.logicalBlockNum += |
757 | offset + 1; | |
28de7948 | 758 | laarr[curr].extLength = (etype << 30) | |
4b11111a | 759 | ((blen - (offset + 1)) << blocksize_bits); |
cb00ea35 CG |
760 | curr++; |
761 | (*endnum)++; | |
1da177e4 LT |
762 | } |
763 | } | |
764 | } | |
765 | ||
766 | static void udf_prealloc_extents(struct inode *inode, int c, int lastblock, | |
5ca4e4be | 767 | struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
cb00ea35 | 768 | int *endnum) |
1da177e4 LT |
769 | { |
770 | int start, length = 0, currlength = 0, i; | |
771 | ||
cb00ea35 | 772 | if (*endnum >= (c + 1)) { |
1da177e4 LT |
773 | if (!lastblock) |
774 | return; | |
775 | else | |
776 | start = c; | |
cb00ea35 | 777 | } else { |
4b11111a MS |
778 | if ((laarr[c + 1].extLength >> 30) == |
779 | (EXT_NOT_RECORDED_ALLOCATED >> 30)) { | |
cb00ea35 | 780 | start = c + 1; |
4b11111a MS |
781 | length = currlength = |
782 | (((laarr[c + 1].extLength & | |
783 | UDF_EXTENT_LENGTH_MASK) + | |
784 | inode->i_sb->s_blocksize - 1) >> | |
785 | inode->i_sb->s_blocksize_bits); | |
786 | } else | |
1da177e4 LT |
787 | start = c; |
788 | } | |
789 | ||
cb00ea35 CG |
790 | for (i = start + 1; i <= *endnum; i++) { |
791 | if (i == *endnum) { | |
1da177e4 LT |
792 | if (lastblock) |
793 | length += UDF_DEFAULT_PREALLOC_BLOCKS; | |
4b11111a MS |
794 | } else if ((laarr[i].extLength >> 30) == |
795 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) { | |
796 | length += (((laarr[i].extLength & | |
797 | UDF_EXTENT_LENGTH_MASK) + | |
798 | inode->i_sb->s_blocksize - 1) >> | |
799 | inode->i_sb->s_blocksize_bits); | |
800 | } else | |
1da177e4 LT |
801 | break; |
802 | } | |
803 | ||
cb00ea35 | 804 | if (length) { |
1da177e4 | 805 | int next = laarr[start].extLocation.logicalBlockNum + |
28de7948 | 806 | (((laarr[start].extLength & UDF_EXTENT_LENGTH_MASK) + |
4b11111a MS |
807 | inode->i_sb->s_blocksize - 1) >> |
808 | inode->i_sb->s_blocksize_bits); | |
1da177e4 | 809 | int numalloc = udf_prealloc_blocks(inode->i_sb, inode, |
4b11111a MS |
810 | laarr[start].extLocation.partitionReferenceNum, |
811 | next, (UDF_DEFAULT_PREALLOC_BLOCKS > length ? | |
812 | length : UDF_DEFAULT_PREALLOC_BLOCKS) - | |
813 | currlength); | |
28de7948 | 814 | if (numalloc) { |
4b11111a | 815 | if (start == (c + 1)) |
1da177e4 | 816 | laarr[start].extLength += |
4b11111a MS |
817 | (numalloc << |
818 | inode->i_sb->s_blocksize_bits); | |
819 | else { | |
cb00ea35 | 820 | memmove(&laarr[c + 2], &laarr[c + 1], |
5ca4e4be | 821 | sizeof(struct long_ad) * (*endnum - (c + 1))); |
cb00ea35 CG |
822 | (*endnum)++; |
823 | laarr[c + 1].extLocation.logicalBlockNum = next; | |
824 | laarr[c + 1].extLocation.partitionReferenceNum = | |
4b11111a MS |
825 | laarr[c].extLocation. |
826 | partitionReferenceNum; | |
827 | laarr[c + 1].extLength = | |
828 | EXT_NOT_RECORDED_ALLOCATED | | |
829 | (numalloc << | |
830 | inode->i_sb->s_blocksize_bits); | |
cb00ea35 | 831 | start = c + 1; |
1da177e4 LT |
832 | } |
833 | ||
cb00ea35 | 834 | for (i = start + 1; numalloc && i < *endnum; i++) { |
4b11111a MS |
835 | int elen = ((laarr[i].extLength & |
836 | UDF_EXTENT_LENGTH_MASK) + | |
837 | inode->i_sb->s_blocksize - 1) >> | |
838 | inode->i_sb->s_blocksize_bits; | |
1da177e4 | 839 | |
cb00ea35 | 840 | if (elen > numalloc) { |
1da177e4 | 841 | laarr[i].extLength -= |
4b11111a MS |
842 | (numalloc << |
843 | inode->i_sb->s_blocksize_bits); | |
1da177e4 | 844 | numalloc = 0; |
cb00ea35 | 845 | } else { |
1da177e4 | 846 | numalloc -= elen; |
cb00ea35 | 847 | if (*endnum > (i + 1)) |
4b11111a MS |
848 | memmove(&laarr[i], |
849 | &laarr[i + 1], | |
5ca4e4be | 850 | sizeof(struct long_ad) * |
4b11111a | 851 | (*endnum - (i + 1))); |
cb00ea35 CG |
852 | i--; |
853 | (*endnum)--; | |
1da177e4 LT |
854 | } |
855 | } | |
c0b34438 | 856 | UDF_I(inode)->i_lenExtents += |
4b11111a | 857 | numalloc << inode->i_sb->s_blocksize_bits; |
1da177e4 LT |
858 | } |
859 | } | |
860 | } | |
861 | ||
862 | static void udf_merge_extents(struct inode *inode, | |
5ca4e4be | 863 | struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
cb00ea35 | 864 | int *endnum) |
1da177e4 LT |
865 | { |
866 | int i; | |
4b11111a MS |
867 | unsigned long blocksize = inode->i_sb->s_blocksize; |
868 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; | |
1da177e4 | 869 | |
cb00ea35 | 870 | for (i = 0; i < (*endnum - 1); i++) { |
5ca4e4be PE |
871 | struct kernel_long_ad *li /*l[i]*/ = &laarr[i]; |
872 | struct kernel_long_ad *lip1 /*l[i plus 1]*/ = &laarr[i + 1]; | |
4b11111a MS |
873 | |
874 | if (((li->extLength >> 30) == (lip1->extLength >> 30)) && | |
875 | (((li->extLength >> 30) == | |
876 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) || | |
877 | ((lip1->extLocation.logicalBlockNum - | |
878 | li->extLocation.logicalBlockNum) == | |
879 | (((li->extLength & UDF_EXTENT_LENGTH_MASK) + | |
880 | blocksize - 1) >> blocksize_bits)))) { | |
881 | ||
882 | if (((li->extLength & UDF_EXTENT_LENGTH_MASK) + | |
883 | (lip1->extLength & UDF_EXTENT_LENGTH_MASK) + | |
884 | blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK) { | |
885 | lip1->extLength = (lip1->extLength - | |
886 | (li->extLength & | |
887 | UDF_EXTENT_LENGTH_MASK) + | |
888 | UDF_EXTENT_LENGTH_MASK) & | |
889 | ~(blocksize - 1); | |
890 | li->extLength = (li->extLength & | |
891 | UDF_EXTENT_FLAG_MASK) + | |
892 | (UDF_EXTENT_LENGTH_MASK + 1) - | |
893 | blocksize; | |
894 | lip1->extLocation.logicalBlockNum = | |
895 | li->extLocation.logicalBlockNum + | |
896 | ((li->extLength & | |
897 | UDF_EXTENT_LENGTH_MASK) >> | |
898 | blocksize_bits); | |
899 | } else { | |
900 | li->extLength = lip1->extLength + | |
901 | (((li->extLength & | |
902 | UDF_EXTENT_LENGTH_MASK) + | |
903 | blocksize - 1) & ~(blocksize - 1)); | |
904 | if (*endnum > (i + 2)) | |
905 | memmove(&laarr[i + 1], &laarr[i + 2], | |
5ca4e4be | 906 | sizeof(struct long_ad) * |
4b11111a MS |
907 | (*endnum - (i + 2))); |
908 | i--; | |
909 | (*endnum)--; | |
1da177e4 | 910 | } |
4b11111a MS |
911 | } else if (((li->extLength >> 30) == |
912 | (EXT_NOT_RECORDED_ALLOCATED >> 30)) && | |
913 | ((lip1->extLength >> 30) == | |
914 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))) { | |
97e961fd | 915 | udf_free_blocks(inode->i_sb, inode, &li->extLocation, 0, |
4b11111a MS |
916 | ((li->extLength & |
917 | UDF_EXTENT_LENGTH_MASK) + | |
918 | blocksize - 1) >> blocksize_bits); | |
919 | li->extLocation.logicalBlockNum = 0; | |
920 | li->extLocation.partitionReferenceNum = 0; | |
921 | ||
922 | if (((li->extLength & UDF_EXTENT_LENGTH_MASK) + | |
923 | (lip1->extLength & UDF_EXTENT_LENGTH_MASK) + | |
924 | blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK) { | |
925 | lip1->extLength = (lip1->extLength - | |
926 | (li->extLength & | |
927 | UDF_EXTENT_LENGTH_MASK) + | |
928 | UDF_EXTENT_LENGTH_MASK) & | |
929 | ~(blocksize - 1); | |
930 | li->extLength = (li->extLength & | |
931 | UDF_EXTENT_FLAG_MASK) + | |
932 | (UDF_EXTENT_LENGTH_MASK + 1) - | |
933 | blocksize; | |
cb00ea35 | 934 | } else { |
4b11111a MS |
935 | li->extLength = lip1->extLength + |
936 | (((li->extLength & | |
937 | UDF_EXTENT_LENGTH_MASK) + | |
938 | blocksize - 1) & ~(blocksize - 1)); | |
cb00ea35 CG |
939 | if (*endnum > (i + 2)) |
940 | memmove(&laarr[i + 1], &laarr[i + 2], | |
5ca4e4be | 941 | sizeof(struct long_ad) * |
4b11111a | 942 | (*endnum - (i + 2))); |
cb00ea35 CG |
943 | i--; |
944 | (*endnum)--; | |
1da177e4 | 945 | } |
4b11111a MS |
946 | } else if ((li->extLength >> 30) == |
947 | (EXT_NOT_RECORDED_ALLOCATED >> 30)) { | |
948 | udf_free_blocks(inode->i_sb, inode, | |
97e961fd | 949 | &li->extLocation, 0, |
4b11111a MS |
950 | ((li->extLength & |
951 | UDF_EXTENT_LENGTH_MASK) + | |
952 | blocksize - 1) >> blocksize_bits); | |
953 | li->extLocation.logicalBlockNum = 0; | |
954 | li->extLocation.partitionReferenceNum = 0; | |
955 | li->extLength = (li->extLength & | |
956 | UDF_EXTENT_LENGTH_MASK) | | |
957 | EXT_NOT_RECORDED_NOT_ALLOCATED; | |
1da177e4 LT |
958 | } |
959 | } | |
960 | } | |
961 | ||
962 | static void udf_update_extents(struct inode *inode, | |
5ca4e4be | 963 | struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
cb00ea35 CG |
964 | int startnum, int endnum, |
965 | struct extent_position *epos) | |
1da177e4 LT |
966 | { |
967 | int start = 0, i; | |
5ca4e4be | 968 | struct kernel_lb_addr tmploc; |
1da177e4 LT |
969 | uint32_t tmplen; |
970 | ||
cb00ea35 CG |
971 | if (startnum > endnum) { |
972 | for (i = 0; i < (startnum - endnum); i++) | |
ff116fc8 | 973 | udf_delete_aext(inode, *epos, laarr[i].extLocation, |
cb00ea35 CG |
974 | laarr[i].extLength); |
975 | } else if (startnum < endnum) { | |
976 | for (i = 0; i < (endnum - startnum); i++) { | |
ff116fc8 | 977 | udf_insert_aext(inode, *epos, laarr[i].extLocation, |
cb00ea35 | 978 | laarr[i].extLength); |
ff116fc8 | 979 | udf_next_aext(inode, epos, &laarr[i].extLocation, |
cb00ea35 CG |
980 | &laarr[i].extLength, 1); |
981 | start++; | |
1da177e4 LT |
982 | } |
983 | } | |
984 | ||
cb00ea35 | 985 | for (i = start; i < endnum; i++) { |
ff116fc8 | 986 | udf_next_aext(inode, epos, &tmploc, &tmplen, 0); |
97e961fd | 987 | udf_write_aext(inode, epos, &laarr[i].extLocation, |
cb00ea35 | 988 | laarr[i].extLength, 1); |
1da177e4 LT |
989 | } |
990 | } | |
991 | ||
cb00ea35 CG |
992 | struct buffer_head *udf_bread(struct inode *inode, int block, |
993 | int create, int *err) | |
1da177e4 | 994 | { |
cb00ea35 | 995 | struct buffer_head *bh = NULL; |
1da177e4 LT |
996 | |
997 | bh = udf_getblk(inode, block, create, err); | |
998 | if (!bh) | |
999 | return NULL; | |
1000 | ||
1001 | if (buffer_uptodate(bh)) | |
1002 | return bh; | |
28de7948 | 1003 | |
1da177e4 | 1004 | ll_rw_block(READ, 1, &bh); |
28de7948 | 1005 | |
1da177e4 LT |
1006 | wait_on_buffer(bh); |
1007 | if (buffer_uptodate(bh)) | |
1008 | return bh; | |
28de7948 | 1009 | |
1da177e4 LT |
1010 | brelse(bh); |
1011 | *err = -EIO; | |
1012 | return NULL; | |
1013 | } | |
1014 | ||
cb00ea35 | 1015 | void udf_truncate(struct inode *inode) |
1da177e4 LT |
1016 | { |
1017 | int offset; | |
1018 | int err; | |
48d6d8ff | 1019 | struct udf_inode_info *iinfo; |
1da177e4 LT |
1020 | |
1021 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
cb00ea35 | 1022 | S_ISLNK(inode->i_mode))) |
1da177e4 LT |
1023 | return; |
1024 | if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) | |
1025 | return; | |
1026 | ||
1027 | lock_kernel(); | |
48d6d8ff MS |
1028 | iinfo = UDF_I(inode); |
1029 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { | |
4b11111a MS |
1030 | if (inode->i_sb->s_blocksize < |
1031 | (udf_file_entry_alloc_offset(inode) + | |
1032 | inode->i_size)) { | |
1da177e4 | 1033 | udf_expand_file_adinicb(inode, inode->i_size, &err); |
48d6d8ff MS |
1034 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { |
1035 | inode->i_size = iinfo->i_lenAlloc; | |
1da177e4 LT |
1036 | unlock_kernel(); |
1037 | return; | |
4b11111a | 1038 | } else |
1da177e4 | 1039 | udf_truncate_extents(inode); |
cb00ea35 | 1040 | } else { |
1da177e4 | 1041 | offset = inode->i_size & (inode->i_sb->s_blocksize - 1); |
48d6d8ff | 1042 | memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset, |
c0b34438 | 1043 | 0x00, inode->i_sb->s_blocksize - |
4b11111a | 1044 | offset - udf_file_entry_alloc_offset(inode)); |
48d6d8ff | 1045 | iinfo->i_lenAlloc = inode->i_size; |
1da177e4 | 1046 | } |
cb00ea35 | 1047 | } else { |
4b11111a MS |
1048 | block_truncate_page(inode->i_mapping, inode->i_size, |
1049 | udf_get_block); | |
1da177e4 | 1050 | udf_truncate_extents(inode); |
647bd61a | 1051 | } |
1da177e4 LT |
1052 | |
1053 | inode->i_mtime = inode->i_ctime = current_fs_time(inode->i_sb); | |
1054 | if (IS_SYNC(inode)) | |
cb00ea35 | 1055 | udf_sync_inode(inode); |
1da177e4 LT |
1056 | else |
1057 | mark_inode_dirty(inode); | |
1058 | unlock_kernel(); | |
1059 | } | |
1060 | ||
cb00ea35 | 1061 | static void __udf_read_inode(struct inode *inode) |
1da177e4 LT |
1062 | { |
1063 | struct buffer_head *bh = NULL; | |
1064 | struct fileEntry *fe; | |
1065 | uint16_t ident; | |
48d6d8ff | 1066 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
1067 | |
1068 | /* | |
1069 | * Set defaults, but the inode is still incomplete! | |
1070 | * Note: get_new_inode() sets the following on a new inode: | |
1071 | * i_sb = sb | |
1072 | * i_no = ino | |
1073 | * i_flags = sb->s_flags | |
1074 | * i_state = 0 | |
1075 | * clean_inode(): zero fills and sets | |
1076 | * i_count = 1 | |
1077 | * i_nlink = 1 | |
1078 | * i_op = NULL; | |
1079 | */ | |
97e961fd | 1080 | bh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 0, &ident); |
cb00ea35 | 1081 | if (!bh) { |
1da177e4 | 1082 | printk(KERN_ERR "udf: udf_read_inode(ino %ld) failed !bh\n", |
cb00ea35 | 1083 | inode->i_ino); |
1da177e4 LT |
1084 | make_bad_inode(inode); |
1085 | return; | |
1086 | } | |
1087 | ||
1088 | if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE && | |
cb00ea35 | 1089 | ident != TAG_IDENT_USE) { |
4b11111a MS |
1090 | printk(KERN_ERR "udf: udf_read_inode(ino %ld) " |
1091 | "failed ident=%d\n", inode->i_ino, ident); | |
3bf25cb4 | 1092 | brelse(bh); |
1da177e4 LT |
1093 | make_bad_inode(inode); |
1094 | return; | |
1095 | } | |
1096 | ||
1097 | fe = (struct fileEntry *)bh->b_data; | |
1098 | ||
5e0f0017 | 1099 | if (fe->icbTag.strategyType == cpu_to_le16(4096)) { |
1ab92785 | 1100 | struct buffer_head *ibh; |
1da177e4 | 1101 | |
97e961fd | 1102 | ibh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 1, |
4b11111a | 1103 | &ident); |
1ab92785 | 1104 | if (ident == TAG_IDENT_IE && ibh) { |
1105 | struct buffer_head *nbh = NULL; | |
5ca4e4be | 1106 | struct kernel_lb_addr loc; |
1ab92785 | 1107 | struct indirectEntry *ie; |
1108 | ||
1109 | ie = (struct indirectEntry *)ibh->b_data; | |
1110 | loc = lelb_to_cpu(ie->indirectICB.extLocation); | |
1111 | ||
1112 | if (ie->indirectICB.extLength && | |
97e961fd | 1113 | (nbh = udf_read_ptagged(inode->i_sb, &loc, 0, |
1ab92785 | 1114 | &ident))) { |
1115 | if (ident == TAG_IDENT_FE || | |
1116 | ident == TAG_IDENT_EFE) { | |
1117 | memcpy(&iinfo->i_location, | |
1118 | &loc, | |
5ca4e4be | 1119 | sizeof(struct kernel_lb_addr)); |
1ab92785 | 1120 | brelse(bh); |
3bf25cb4 | 1121 | brelse(ibh); |
1ab92785 | 1122 | brelse(nbh); |
1123 | __udf_read_inode(inode); | |
1124 | return; | |
28de7948 | 1125 | } |
1ab92785 | 1126 | brelse(nbh); |
1da177e4 | 1127 | } |
28de7948 | 1128 | } |
1ab92785 | 1129 | brelse(ibh); |
5e0f0017 | 1130 | } else if (fe->icbTag.strategyType != cpu_to_le16(4)) { |
1da177e4 | 1131 | printk(KERN_ERR "udf: unsupported strategy type: %d\n", |
cb00ea35 | 1132 | le16_to_cpu(fe->icbTag.strategyType)); |
3bf25cb4 | 1133 | brelse(bh); |
1da177e4 LT |
1134 | make_bad_inode(inode); |
1135 | return; | |
1136 | } | |
1137 | udf_fill_inode(inode, bh); | |
31170b6a | 1138 | |
3bf25cb4 | 1139 | brelse(bh); |
1da177e4 LT |
1140 | } |
1141 | ||
1142 | static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) | |
1143 | { | |
1144 | struct fileEntry *fe; | |
1145 | struct extendedFileEntry *efe; | |
1da177e4 | 1146 | int offset; |
6c79e987 | 1147 | struct udf_sb_info *sbi = UDF_SB(inode->i_sb); |
48d6d8ff | 1148 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
1149 | |
1150 | fe = (struct fileEntry *)bh->b_data; | |
1151 | efe = (struct extendedFileEntry *)bh->b_data; | |
1152 | ||
5e0f0017 | 1153 | if (fe->icbTag.strategyType == cpu_to_le16(4)) |
48d6d8ff | 1154 | iinfo->i_strat4096 = 0; |
5e0f0017 | 1155 | else /* if (fe->icbTag.strategyType == cpu_to_le16(4096)) */ |
48d6d8ff | 1156 | iinfo->i_strat4096 = 1; |
1da177e4 | 1157 | |
48d6d8ff | 1158 | iinfo->i_alloc_type = le16_to_cpu(fe->icbTag.flags) & |
4b11111a | 1159 | ICBTAG_FLAG_AD_MASK; |
48d6d8ff MS |
1160 | iinfo->i_unique = 0; |
1161 | iinfo->i_lenEAttr = 0; | |
1162 | iinfo->i_lenExtents = 0; | |
1163 | iinfo->i_lenAlloc = 0; | |
1164 | iinfo->i_next_alloc_block = 0; | |
1165 | iinfo->i_next_alloc_goal = 0; | |
5e0f0017 | 1166 | if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) { |
48d6d8ff MS |
1167 | iinfo->i_efe = 1; |
1168 | iinfo->i_use = 0; | |
4b11111a MS |
1169 | if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - |
1170 | sizeof(struct extendedFileEntry))) { | |
647bd61a CG |
1171 | make_bad_inode(inode); |
1172 | return; | |
1173 | } | |
48d6d8ff | 1174 | memcpy(iinfo->i_ext.i_data, |
4b11111a MS |
1175 | bh->b_data + sizeof(struct extendedFileEntry), |
1176 | inode->i_sb->s_blocksize - | |
1177 | sizeof(struct extendedFileEntry)); | |
5e0f0017 | 1178 | } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) { |
48d6d8ff MS |
1179 | iinfo->i_efe = 0; |
1180 | iinfo->i_use = 0; | |
4b11111a MS |
1181 | if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - |
1182 | sizeof(struct fileEntry))) { | |
647bd61a CG |
1183 | make_bad_inode(inode); |
1184 | return; | |
1185 | } | |
48d6d8ff | 1186 | memcpy(iinfo->i_ext.i_data, |
c0b34438 | 1187 | bh->b_data + sizeof(struct fileEntry), |
cb00ea35 | 1188 | inode->i_sb->s_blocksize - sizeof(struct fileEntry)); |
5e0f0017 | 1189 | } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) { |
48d6d8ff MS |
1190 | iinfo->i_efe = 0; |
1191 | iinfo->i_use = 1; | |
1192 | iinfo->i_lenAlloc = le32_to_cpu( | |
4b11111a MS |
1193 | ((struct unallocSpaceEntry *)bh->b_data)-> |
1194 | lengthAllocDescs); | |
1195 | if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - | |
1196 | sizeof(struct unallocSpaceEntry))) { | |
647bd61a CG |
1197 | make_bad_inode(inode); |
1198 | return; | |
1199 | } | |
48d6d8ff | 1200 | memcpy(iinfo->i_ext.i_data, |
4b11111a MS |
1201 | bh->b_data + sizeof(struct unallocSpaceEntry), |
1202 | inode->i_sb->s_blocksize - | |
1203 | sizeof(struct unallocSpaceEntry)); | |
1da177e4 LT |
1204 | return; |
1205 | } | |
1206 | ||
1207 | inode->i_uid = le32_to_cpu(fe->uid); | |
ca76d2d8 CG |
1208 | if (inode->i_uid == -1 || |
1209 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_IGNORE) || | |
1210 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_SET)) | |
4d6660eb | 1211 | inode->i_uid = UDF_SB(inode->i_sb)->s_uid; |
1da177e4 LT |
1212 | |
1213 | inode->i_gid = le32_to_cpu(fe->gid); | |
ca76d2d8 CG |
1214 | if (inode->i_gid == -1 || |
1215 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_IGNORE) || | |
1216 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET)) | |
4d6660eb | 1217 | inode->i_gid = UDF_SB(inode->i_sb)->s_gid; |
1da177e4 LT |
1218 | |
1219 | inode->i_nlink = le16_to_cpu(fe->fileLinkCount); | |
1220 | if (!inode->i_nlink) | |
1221 | inode->i_nlink = 1; | |
647bd61a | 1222 | |
1da177e4 | 1223 | inode->i_size = le64_to_cpu(fe->informationLength); |
48d6d8ff | 1224 | iinfo->i_lenExtents = inode->i_size; |
1da177e4 | 1225 | |
7ac9bcd5 | 1226 | if (fe->icbTag.fileType != ICBTAG_FILE_TYPE_DIRECTORY && |
87bc730c | 1227 | sbi->s_fmode != UDF_INVALID_MODE) |
7ac9bcd5 MS |
1228 | inode->i_mode = sbi->s_fmode; |
1229 | else if (fe->icbTag.fileType == ICBTAG_FILE_TYPE_DIRECTORY && | |
87bc730c | 1230 | sbi->s_dmode != UDF_INVALID_MODE) |
7ac9bcd5 MS |
1231 | inode->i_mode = sbi->s_dmode; |
1232 | else | |
1233 | inode->i_mode = udf_convert_permissions(fe); | |
1234 | inode->i_mode &= ~sbi->s_umask; | |
1da177e4 | 1235 | |
48d6d8ff | 1236 | if (iinfo->i_efe == 0) { |
1da177e4 | 1237 | inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) << |
28de7948 | 1238 | (inode->i_sb->s_blocksize_bits - 9); |
1da177e4 | 1239 | |
56774805 | 1240 | if (!udf_disk_stamp_to_time(&inode->i_atime, fe->accessTime)) |
cbf5676a | 1241 | inode->i_atime = sbi->s_record_time; |
1242 | ||
56774805 MS |
1243 | if (!udf_disk_stamp_to_time(&inode->i_mtime, |
1244 | fe->modificationTime)) | |
cbf5676a | 1245 | inode->i_mtime = sbi->s_record_time; |
1246 | ||
56774805 | 1247 | if (!udf_disk_stamp_to_time(&inode->i_ctime, fe->attrTime)) |
cbf5676a | 1248 | inode->i_ctime = sbi->s_record_time; |
1da177e4 | 1249 | |
48d6d8ff MS |
1250 | iinfo->i_unique = le64_to_cpu(fe->uniqueID); |
1251 | iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr); | |
1252 | iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs); | |
1253 | offset = sizeof(struct fileEntry) + iinfo->i_lenEAttr; | |
cb00ea35 | 1254 | } else { |
647bd61a | 1255 | inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) << |
cb00ea35 | 1256 | (inode->i_sb->s_blocksize_bits - 9); |
1da177e4 | 1257 | |
56774805 | 1258 | if (!udf_disk_stamp_to_time(&inode->i_atime, efe->accessTime)) |
cbf5676a | 1259 | inode->i_atime = sbi->s_record_time; |
1260 | ||
56774805 MS |
1261 | if (!udf_disk_stamp_to_time(&inode->i_mtime, |
1262 | efe->modificationTime)) | |
cbf5676a | 1263 | inode->i_mtime = sbi->s_record_time; |
1264 | ||
56774805 | 1265 | if (!udf_disk_stamp_to_time(&iinfo->i_crtime, efe->createTime)) |
cbf5676a | 1266 | iinfo->i_crtime = sbi->s_record_time; |
1267 | ||
56774805 | 1268 | if (!udf_disk_stamp_to_time(&inode->i_ctime, efe->attrTime)) |
cbf5676a | 1269 | inode->i_ctime = sbi->s_record_time; |
1da177e4 | 1270 | |
48d6d8ff MS |
1271 | iinfo->i_unique = le64_to_cpu(efe->uniqueID); |
1272 | iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr); | |
1273 | iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs); | |
4b11111a | 1274 | offset = sizeof(struct extendedFileEntry) + |
48d6d8ff | 1275 | iinfo->i_lenEAttr; |
1da177e4 LT |
1276 | } |
1277 | ||
cb00ea35 CG |
1278 | switch (fe->icbTag.fileType) { |
1279 | case ICBTAG_FILE_TYPE_DIRECTORY: | |
28de7948 CG |
1280 | inode->i_op = &udf_dir_inode_operations; |
1281 | inode->i_fop = &udf_dir_operations; | |
1282 | inode->i_mode |= S_IFDIR; | |
1283 | inc_nlink(inode); | |
1284 | break; | |
cb00ea35 CG |
1285 | case ICBTAG_FILE_TYPE_REALTIME: |
1286 | case ICBTAG_FILE_TYPE_REGULAR: | |
1287 | case ICBTAG_FILE_TYPE_UNDEF: | |
742e1795 | 1288 | case ICBTAG_FILE_TYPE_VAT20: |
48d6d8ff | 1289 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) |
28de7948 CG |
1290 | inode->i_data.a_ops = &udf_adinicb_aops; |
1291 | else | |
1292 | inode->i_data.a_ops = &udf_aops; | |
1293 | inode->i_op = &udf_file_inode_operations; | |
1294 | inode->i_fop = &udf_file_operations; | |
1295 | inode->i_mode |= S_IFREG; | |
1296 | break; | |
cb00ea35 | 1297 | case ICBTAG_FILE_TYPE_BLOCK: |
28de7948 CG |
1298 | inode->i_mode |= S_IFBLK; |
1299 | break; | |
cb00ea35 | 1300 | case ICBTAG_FILE_TYPE_CHAR: |
28de7948 CG |
1301 | inode->i_mode |= S_IFCHR; |
1302 | break; | |
cb00ea35 | 1303 | case ICBTAG_FILE_TYPE_FIFO: |
28de7948 CG |
1304 | init_special_inode(inode, inode->i_mode | S_IFIFO, 0); |
1305 | break; | |
cb00ea35 | 1306 | case ICBTAG_FILE_TYPE_SOCKET: |
28de7948 CG |
1307 | init_special_inode(inode, inode->i_mode | S_IFSOCK, 0); |
1308 | break; | |
cb00ea35 | 1309 | case ICBTAG_FILE_TYPE_SYMLINK: |
28de7948 CG |
1310 | inode->i_data.a_ops = &udf_symlink_aops; |
1311 | inode->i_op = &page_symlink_inode_operations; | |
1312 | inode->i_mode = S_IFLNK | S_IRWXUGO; | |
1313 | break; | |
bfb257a5 JK |
1314 | case ICBTAG_FILE_TYPE_MAIN: |
1315 | udf_debug("METADATA FILE-----\n"); | |
1316 | break; | |
1317 | case ICBTAG_FILE_TYPE_MIRROR: | |
1318 | udf_debug("METADATA MIRROR FILE-----\n"); | |
1319 | break; | |
1320 | case ICBTAG_FILE_TYPE_BITMAP: | |
1321 | udf_debug("METADATA BITMAP FILE-----\n"); | |
1322 | break; | |
cb00ea35 | 1323 | default: |
4b11111a MS |
1324 | printk(KERN_ERR "udf: udf_fill_inode(ino %ld) failed unknown " |
1325 | "file type=%d\n", inode->i_ino, | |
1326 | fe->icbTag.fileType); | |
28de7948 CG |
1327 | make_bad_inode(inode); |
1328 | return; | |
1da177e4 | 1329 | } |
cb00ea35 | 1330 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
4b11111a MS |
1331 | struct deviceSpec *dsea = |
1332 | (struct deviceSpec *)udf_get_extendedattr(inode, 12, 1); | |
cb00ea35 CG |
1333 | if (dsea) { |
1334 | init_special_inode(inode, inode->i_mode, | |
4b11111a MS |
1335 | MKDEV(le32_to_cpu(dsea->majorDeviceIdent), |
1336 | le32_to_cpu(dsea->minorDeviceIdent))); | |
1da177e4 | 1337 | /* Developer ID ??? */ |
4b11111a | 1338 | } else |
1da177e4 | 1339 | make_bad_inode(inode); |
1da177e4 LT |
1340 | } |
1341 | } | |
1342 | ||
647bd61a CG |
1343 | static int udf_alloc_i_data(struct inode *inode, size_t size) |
1344 | { | |
48d6d8ff MS |
1345 | struct udf_inode_info *iinfo = UDF_I(inode); |
1346 | iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL); | |
647bd61a | 1347 | |
48d6d8ff | 1348 | if (!iinfo->i_ext.i_data) { |
4b11111a MS |
1349 | printk(KERN_ERR "udf:udf_alloc_i_data (ino %ld) " |
1350 | "no free memory\n", inode->i_ino); | |
647bd61a CG |
1351 | return -ENOMEM; |
1352 | } | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
cb00ea35 | 1357 | static mode_t udf_convert_permissions(struct fileEntry *fe) |
1da177e4 LT |
1358 | { |
1359 | mode_t mode; | |
1360 | uint32_t permissions; | |
1361 | uint32_t flags; | |
1362 | ||
1363 | permissions = le32_to_cpu(fe->permissions); | |
1364 | flags = le16_to_cpu(fe->icbTag.flags); | |
1365 | ||
4b11111a MS |
1366 | mode = ((permissions) & S_IRWXO) | |
1367 | ((permissions >> 2) & S_IRWXG) | | |
1368 | ((permissions >> 4) & S_IRWXU) | | |
1369 | ((flags & ICBTAG_FLAG_SETUID) ? S_ISUID : 0) | | |
1370 | ((flags & ICBTAG_FLAG_SETGID) ? S_ISGID : 0) | | |
1371 | ((flags & ICBTAG_FLAG_STICKY) ? S_ISVTX : 0); | |
1da177e4 LT |
1372 | |
1373 | return mode; | |
1374 | } | |
1375 | ||
cb00ea35 | 1376 | int udf_write_inode(struct inode *inode, int sync) |
1da177e4 LT |
1377 | { |
1378 | int ret; | |
28de7948 | 1379 | |
1da177e4 LT |
1380 | lock_kernel(); |
1381 | ret = udf_update_inode(inode, sync); | |
1382 | unlock_kernel(); | |
28de7948 | 1383 | |
1da177e4 LT |
1384 | return ret; |
1385 | } | |
1386 | ||
cb00ea35 | 1387 | int udf_sync_inode(struct inode *inode) |
1da177e4 LT |
1388 | { |
1389 | return udf_update_inode(inode, 1); | |
1390 | } | |
1391 | ||
cb00ea35 | 1392 | static int udf_update_inode(struct inode *inode, int do_sync) |
1da177e4 LT |
1393 | { |
1394 | struct buffer_head *bh = NULL; | |
1395 | struct fileEntry *fe; | |
1396 | struct extendedFileEntry *efe; | |
1397 | uint32_t udfperms; | |
1398 | uint16_t icbflags; | |
1399 | uint16_t crclen; | |
1da177e4 | 1400 | int err = 0; |
6c79e987 | 1401 | struct udf_sb_info *sbi = UDF_SB(inode->i_sb); |
4b11111a | 1402 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; |
48d6d8ff | 1403 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 | 1404 | |
4b11111a MS |
1405 | bh = udf_tread(inode->i_sb, |
1406 | udf_get_lb_pblock(inode->i_sb, | |
97e961fd | 1407 | &iinfo->i_location, 0)); |
cb00ea35 | 1408 | if (!bh) { |
1da177e4 LT |
1409 | udf_debug("bread failure\n"); |
1410 | return -EIO; | |
1411 | } | |
1412 | ||
1413 | memset(bh->b_data, 0x00, inode->i_sb->s_blocksize); | |
1414 | ||
1415 | fe = (struct fileEntry *)bh->b_data; | |
1416 | efe = (struct extendedFileEntry *)bh->b_data; | |
1417 | ||
5e0f0017 | 1418 | if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) { |
1da177e4 | 1419 | struct unallocSpaceEntry *use = |
28de7948 | 1420 | (struct unallocSpaceEntry *)bh->b_data; |
1da177e4 | 1421 | |
48d6d8ff | 1422 | use->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); |
4b11111a | 1423 | memcpy(bh->b_data + sizeof(struct unallocSpaceEntry), |
48d6d8ff | 1424 | iinfo->i_ext.i_data, inode->i_sb->s_blocksize - |
4b11111a MS |
1425 | sizeof(struct unallocSpaceEntry)); |
1426 | crclen = sizeof(struct unallocSpaceEntry) + | |
5ca4e4be | 1427 | iinfo->i_lenAlloc - sizeof(struct tag); |
4b11111a | 1428 | use->descTag.tagLocation = cpu_to_le32( |
48d6d8ff | 1429 | iinfo->i_location. |
4b11111a | 1430 | logicalBlockNum); |
1da177e4 | 1431 | use->descTag.descCRCLength = cpu_to_le16(crclen); |
f845fced | 1432 | use->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)use + |
5ca4e4be | 1433 | sizeof(struct tag), |
f845fced | 1434 | crclen)); |
3f2587bb | 1435 | use->descTag.tagChecksum = udf_tag_checksum(&use->descTag); |
1da177e4 LT |
1436 | |
1437 | mark_buffer_dirty(bh); | |
3bf25cb4 | 1438 | brelse(bh); |
1da177e4 LT |
1439 | return err; |
1440 | } | |
1441 | ||
4d6660eb PS |
1442 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_FORGET)) |
1443 | fe->uid = cpu_to_le32(-1); | |
cb00ea35 CG |
1444 | else |
1445 | fe->uid = cpu_to_le32(inode->i_uid); | |
1da177e4 | 1446 | |
4d6660eb PS |
1447 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_FORGET)) |
1448 | fe->gid = cpu_to_le32(-1); | |
cb00ea35 CG |
1449 | else |
1450 | fe->gid = cpu_to_le32(inode->i_gid); | |
1da177e4 | 1451 | |
4b11111a MS |
1452 | udfperms = ((inode->i_mode & S_IRWXO)) | |
1453 | ((inode->i_mode & S_IRWXG) << 2) | | |
1454 | ((inode->i_mode & S_IRWXU) << 4); | |
1da177e4 | 1455 | |
4b11111a MS |
1456 | udfperms |= (le32_to_cpu(fe->permissions) & |
1457 | (FE_PERM_O_DELETE | FE_PERM_O_CHATTR | | |
1458 | FE_PERM_G_DELETE | FE_PERM_G_CHATTR | | |
1459 | FE_PERM_U_DELETE | FE_PERM_U_CHATTR)); | |
1da177e4 LT |
1460 | fe->permissions = cpu_to_le32(udfperms); |
1461 | ||
1462 | if (S_ISDIR(inode->i_mode)) | |
1463 | fe->fileLinkCount = cpu_to_le16(inode->i_nlink - 1); | |
1464 | else | |
1465 | fe->fileLinkCount = cpu_to_le16(inode->i_nlink); | |
1466 | ||
1467 | fe->informationLength = cpu_to_le64(inode->i_size); | |
1468 | ||
cb00ea35 | 1469 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
5ca4e4be | 1470 | struct regid *eid; |
28de7948 CG |
1471 | struct deviceSpec *dsea = |
1472 | (struct deviceSpec *)udf_get_extendedattr(inode, 12, 1); | |
cb00ea35 | 1473 | if (!dsea) { |
1da177e4 | 1474 | dsea = (struct deviceSpec *) |
28de7948 CG |
1475 | udf_add_extendedattr(inode, |
1476 | sizeof(struct deviceSpec) + | |
5ca4e4be | 1477 | sizeof(struct regid), 12, 0x3); |
1da177e4 LT |
1478 | dsea->attrType = cpu_to_le32(12); |
1479 | dsea->attrSubtype = 1; | |
4b11111a MS |
1480 | dsea->attrLength = cpu_to_le32( |
1481 | sizeof(struct deviceSpec) + | |
5ca4e4be PE |
1482 | sizeof(struct regid)); |
1483 | dsea->impUseLength = cpu_to_le32(sizeof(struct regid)); | |
1da177e4 | 1484 | } |
5ca4e4be PE |
1485 | eid = (struct regid *)dsea->impUse; |
1486 | memset(eid, 0, sizeof(struct regid)); | |
1da177e4 LT |
1487 | strcpy(eid->ident, UDF_ID_DEVELOPER); |
1488 | eid->identSuffix[0] = UDF_OS_CLASS_UNIX; | |
1489 | eid->identSuffix[1] = UDF_OS_ID_LINUX; | |
1490 | dsea->majorDeviceIdent = cpu_to_le32(imajor(inode)); | |
1491 | dsea->minorDeviceIdent = cpu_to_le32(iminor(inode)); | |
1492 | } | |
1493 | ||
48d6d8ff | 1494 | if (iinfo->i_efe == 0) { |
c0b34438 | 1495 | memcpy(bh->b_data + sizeof(struct fileEntry), |
48d6d8ff | 1496 | iinfo->i_ext.i_data, |
cb00ea35 | 1497 | inode->i_sb->s_blocksize - sizeof(struct fileEntry)); |
28de7948 | 1498 | fe->logicalBlocksRecorded = cpu_to_le64( |
4b11111a MS |
1499 | (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> |
1500 | (blocksize_bits - 9)); | |
1da177e4 | 1501 | |
56774805 MS |
1502 | udf_time_to_disk_stamp(&fe->accessTime, inode->i_atime); |
1503 | udf_time_to_disk_stamp(&fe->modificationTime, inode->i_mtime); | |
1504 | udf_time_to_disk_stamp(&fe->attrTime, inode->i_ctime); | |
5ca4e4be | 1505 | memset(&(fe->impIdent), 0, sizeof(struct regid)); |
1da177e4 LT |
1506 | strcpy(fe->impIdent.ident, UDF_ID_DEVELOPER); |
1507 | fe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; | |
1508 | fe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; | |
48d6d8ff MS |
1509 | fe->uniqueID = cpu_to_le64(iinfo->i_unique); |
1510 | fe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr); | |
1511 | fe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); | |
1da177e4 LT |
1512 | fe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_FE); |
1513 | crclen = sizeof(struct fileEntry); | |
cb00ea35 | 1514 | } else { |
4b11111a | 1515 | memcpy(bh->b_data + sizeof(struct extendedFileEntry), |
48d6d8ff | 1516 | iinfo->i_ext.i_data, |
4b11111a MS |
1517 | inode->i_sb->s_blocksize - |
1518 | sizeof(struct extendedFileEntry)); | |
1da177e4 | 1519 | efe->objectSize = cpu_to_le64(inode->i_size); |
28de7948 | 1520 | efe->logicalBlocksRecorded = cpu_to_le64( |
4b11111a MS |
1521 | (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> |
1522 | (blocksize_bits - 9)); | |
1da177e4 | 1523 | |
48d6d8ff MS |
1524 | if (iinfo->i_crtime.tv_sec > inode->i_atime.tv_sec || |
1525 | (iinfo->i_crtime.tv_sec == inode->i_atime.tv_sec && | |
1526 | iinfo->i_crtime.tv_nsec > inode->i_atime.tv_nsec)) | |
1527 | iinfo->i_crtime = inode->i_atime; | |
4b11111a | 1528 | |
48d6d8ff MS |
1529 | if (iinfo->i_crtime.tv_sec > inode->i_mtime.tv_sec || |
1530 | (iinfo->i_crtime.tv_sec == inode->i_mtime.tv_sec && | |
1531 | iinfo->i_crtime.tv_nsec > inode->i_mtime.tv_nsec)) | |
1532 | iinfo->i_crtime = inode->i_mtime; | |
4b11111a | 1533 | |
48d6d8ff MS |
1534 | if (iinfo->i_crtime.tv_sec > inode->i_ctime.tv_sec || |
1535 | (iinfo->i_crtime.tv_sec == inode->i_ctime.tv_sec && | |
1536 | iinfo->i_crtime.tv_nsec > inode->i_ctime.tv_nsec)) | |
1537 | iinfo->i_crtime = inode->i_ctime; | |
1da177e4 | 1538 | |
56774805 MS |
1539 | udf_time_to_disk_stamp(&efe->accessTime, inode->i_atime); |
1540 | udf_time_to_disk_stamp(&efe->modificationTime, inode->i_mtime); | |
1541 | udf_time_to_disk_stamp(&efe->createTime, iinfo->i_crtime); | |
1542 | udf_time_to_disk_stamp(&efe->attrTime, inode->i_ctime); | |
1da177e4 | 1543 | |
5ca4e4be | 1544 | memset(&(efe->impIdent), 0, sizeof(struct regid)); |
1da177e4 LT |
1545 | strcpy(efe->impIdent.ident, UDF_ID_DEVELOPER); |
1546 | efe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; | |
1547 | efe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; | |
48d6d8ff MS |
1548 | efe->uniqueID = cpu_to_le64(iinfo->i_unique); |
1549 | efe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr); | |
1550 | efe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); | |
1da177e4 LT |
1551 | efe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EFE); |
1552 | crclen = sizeof(struct extendedFileEntry); | |
1553 | } | |
48d6d8ff | 1554 | if (iinfo->i_strat4096) { |
1da177e4 LT |
1555 | fe->icbTag.strategyType = cpu_to_le16(4096); |
1556 | fe->icbTag.strategyParameter = cpu_to_le16(1); | |
1557 | fe->icbTag.numEntries = cpu_to_le16(2); | |
cb00ea35 | 1558 | } else { |
1da177e4 LT |
1559 | fe->icbTag.strategyType = cpu_to_le16(4); |
1560 | fe->icbTag.numEntries = cpu_to_le16(1); | |
1561 | } | |
1562 | ||
1563 | if (S_ISDIR(inode->i_mode)) | |
1564 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_DIRECTORY; | |
1565 | else if (S_ISREG(inode->i_mode)) | |
1566 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_REGULAR; | |
1567 | else if (S_ISLNK(inode->i_mode)) | |
1568 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_SYMLINK; | |
1569 | else if (S_ISBLK(inode->i_mode)) | |
1570 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_BLOCK; | |
1571 | else if (S_ISCHR(inode->i_mode)) | |
1572 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_CHAR; | |
1573 | else if (S_ISFIFO(inode->i_mode)) | |
1574 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_FIFO; | |
1575 | else if (S_ISSOCK(inode->i_mode)) | |
1576 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_SOCKET; | |
1577 | ||
48d6d8ff | 1578 | icbflags = iinfo->i_alloc_type | |
28de7948 CG |
1579 | ((inode->i_mode & S_ISUID) ? ICBTAG_FLAG_SETUID : 0) | |
1580 | ((inode->i_mode & S_ISGID) ? ICBTAG_FLAG_SETGID : 0) | | |
1581 | ((inode->i_mode & S_ISVTX) ? ICBTAG_FLAG_STICKY : 0) | | |
1582 | (le16_to_cpu(fe->icbTag.flags) & | |
1583 | ~(ICBTAG_FLAG_AD_MASK | ICBTAG_FLAG_SETUID | | |
1584 | ICBTAG_FLAG_SETGID | ICBTAG_FLAG_STICKY)); | |
1da177e4 LT |
1585 | |
1586 | fe->icbTag.flags = cpu_to_le16(icbflags); | |
6c79e987 | 1587 | if (sbi->s_udfrev >= 0x0200) |
1da177e4 LT |
1588 | fe->descTag.descVersion = cpu_to_le16(3); |
1589 | else | |
1590 | fe->descTag.descVersion = cpu_to_le16(2); | |
6c79e987 | 1591 | fe->descTag.tagSerialNum = cpu_to_le16(sbi->s_serial_number); |
4b11111a | 1592 | fe->descTag.tagLocation = cpu_to_le32( |
48d6d8ff MS |
1593 | iinfo->i_location.logicalBlockNum); |
1594 | crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc - | |
5ca4e4be | 1595 | sizeof(struct tag); |
1da177e4 | 1596 | fe->descTag.descCRCLength = cpu_to_le16(crclen); |
5ca4e4be | 1597 | fe->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)fe + sizeof(struct tag), |
f845fced | 1598 | crclen)); |
3f2587bb | 1599 | fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag); |
1da177e4 LT |
1600 | |
1601 | /* write the data blocks */ | |
1602 | mark_buffer_dirty(bh); | |
cb00ea35 | 1603 | if (do_sync) { |
1da177e4 | 1604 | sync_dirty_buffer(bh); |
cb00ea35 | 1605 | if (buffer_req(bh) && !buffer_uptodate(bh)) { |
4b11111a MS |
1606 | printk(KERN_WARNING "IO error syncing udf inode " |
1607 | "[%s:%08lx]\n", inode->i_sb->s_id, | |
1608 | inode->i_ino); | |
1da177e4 LT |
1609 | err = -EIO; |
1610 | } | |
1611 | } | |
3bf25cb4 | 1612 | brelse(bh); |
28de7948 | 1613 | |
1da177e4 LT |
1614 | return err; |
1615 | } | |
1616 | ||
97e961fd | 1617 | struct inode *udf_iget(struct super_block *sb, struct kernel_lb_addr *ino) |
1da177e4 LT |
1618 | { |
1619 | unsigned long block = udf_get_lb_pblock(sb, ino, 0); | |
1620 | struct inode *inode = iget_locked(sb, block); | |
1621 | ||
1622 | if (!inode) | |
1623 | return NULL; | |
1624 | ||
1625 | if (inode->i_state & I_NEW) { | |
97e961fd | 1626 | memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr)); |
1da177e4 LT |
1627 | __udf_read_inode(inode); |
1628 | unlock_new_inode(inode); | |
1629 | } | |
1630 | ||
1631 | if (is_bad_inode(inode)) | |
1632 | goto out_iput; | |
1633 | ||
97e961fd PE |
1634 | if (ino->logicalBlockNum >= UDF_SB(sb)-> |
1635 | s_partmaps[ino->partitionReferenceNum].s_partition_len) { | |
1da177e4 | 1636 | udf_debug("block=%d, partition=%d out of range\n", |
97e961fd | 1637 | ino->logicalBlockNum, ino->partitionReferenceNum); |
1da177e4 LT |
1638 | make_bad_inode(inode); |
1639 | goto out_iput; | |
1640 | } | |
1641 | ||
1642 | return inode; | |
1643 | ||
28de7948 | 1644 | out_iput: |
1da177e4 LT |
1645 | iput(inode); |
1646 | return NULL; | |
1647 | } | |
1648 | ||
4b11111a | 1649 | int8_t udf_add_aext(struct inode *inode, struct extent_position *epos, |
97e961fd | 1650 | struct kernel_lb_addr *eloc, uint32_t elen, int inc) |
1da177e4 LT |
1651 | { |
1652 | int adsize; | |
5ca4e4be PE |
1653 | struct short_ad *sad = NULL; |
1654 | struct long_ad *lad = NULL; | |
1da177e4 LT |
1655 | struct allocExtDesc *aed; |
1656 | int8_t etype; | |
1657 | uint8_t *ptr; | |
48d6d8ff | 1658 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 | 1659 | |
ff116fc8 | 1660 | if (!epos->bh) |
48d6d8ff | 1661 | ptr = iinfo->i_ext.i_data + epos->offset - |
4b11111a | 1662 | udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1663 | iinfo->i_lenEAttr; |
1da177e4 | 1664 | else |
ff116fc8 | 1665 | ptr = epos->bh->b_data + epos->offset; |
1da177e4 | 1666 | |
48d6d8ff | 1667 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) |
5ca4e4be | 1668 | adsize = sizeof(struct short_ad); |
48d6d8ff | 1669 | else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) |
5ca4e4be | 1670 | adsize = sizeof(struct long_ad); |
1da177e4 LT |
1671 | else |
1672 | return -1; | |
1673 | ||
cb00ea35 | 1674 | if (epos->offset + (2 * adsize) > inode->i_sb->s_blocksize) { |
1da177e4 LT |
1675 | char *sptr, *dptr; |
1676 | struct buffer_head *nbh; | |
1677 | int err, loffset; | |
5ca4e4be | 1678 | struct kernel_lb_addr obloc = epos->block; |
1da177e4 | 1679 | |
4b11111a MS |
1680 | epos->block.logicalBlockNum = udf_new_block(inode->i_sb, NULL, |
1681 | obloc.partitionReferenceNum, | |
1682 | obloc.logicalBlockNum, &err); | |
1683 | if (!epos->block.logicalBlockNum) | |
1da177e4 | 1684 | return -1; |
4b11111a | 1685 | nbh = udf_tgetblk(inode->i_sb, udf_get_lb_pblock(inode->i_sb, |
97e961fd | 1686 | &epos->block, |
4b11111a MS |
1687 | 0)); |
1688 | if (!nbh) | |
1da177e4 | 1689 | return -1; |
1da177e4 LT |
1690 | lock_buffer(nbh); |
1691 | memset(nbh->b_data, 0x00, inode->i_sb->s_blocksize); | |
1692 | set_buffer_uptodate(nbh); | |
1693 | unlock_buffer(nbh); | |
1694 | mark_buffer_dirty_inode(nbh, inode); | |
1695 | ||
1696 | aed = (struct allocExtDesc *)(nbh->b_data); | |
1697 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT)) | |
4b11111a MS |
1698 | aed->previousAllocExtLocation = |
1699 | cpu_to_le32(obloc.logicalBlockNum); | |
cb00ea35 | 1700 | if (epos->offset + adsize > inode->i_sb->s_blocksize) { |
ff116fc8 | 1701 | loffset = epos->offset; |
1da177e4 LT |
1702 | aed->lengthAllocDescs = cpu_to_le32(adsize); |
1703 | sptr = ptr - adsize; | |
1704 | dptr = nbh->b_data + sizeof(struct allocExtDesc); | |
1705 | memcpy(dptr, sptr, adsize); | |
ff116fc8 | 1706 | epos->offset = sizeof(struct allocExtDesc) + adsize; |
cb00ea35 | 1707 | } else { |
ff116fc8 | 1708 | loffset = epos->offset + adsize; |
1da177e4 LT |
1709 | aed->lengthAllocDescs = cpu_to_le32(0); |
1710 | sptr = ptr; | |
ff116fc8 | 1711 | epos->offset = sizeof(struct allocExtDesc); |
1da177e4 | 1712 | |
cb00ea35 | 1713 | if (epos->bh) { |
ff116fc8 | 1714 | aed = (struct allocExtDesc *)epos->bh->b_data; |
c2104fda | 1715 | le32_add_cpu(&aed->lengthAllocDescs, adsize); |
cb00ea35 | 1716 | } else { |
48d6d8ff | 1717 | iinfo->i_lenAlloc += adsize; |
1da177e4 LT |
1718 | mark_inode_dirty(inode); |
1719 | } | |
1720 | } | |
6c79e987 | 1721 | if (UDF_SB(inode->i_sb)->s_udfrev >= 0x0200) |
1da177e4 | 1722 | udf_new_tag(nbh->b_data, TAG_IDENT_AED, 3, 1, |
5ca4e4be | 1723 | epos->block.logicalBlockNum, sizeof(struct tag)); |
1da177e4 LT |
1724 | else |
1725 | udf_new_tag(nbh->b_data, TAG_IDENT_AED, 2, 1, | |
5ca4e4be | 1726 | epos->block.logicalBlockNum, sizeof(struct tag)); |
48d6d8ff | 1727 | switch (iinfo->i_alloc_type) { |
cb00ea35 | 1728 | case ICBTAG_FLAG_AD_SHORT: |
5ca4e4be | 1729 | sad = (struct short_ad *)sptr; |
28de7948 CG |
1730 | sad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS | |
1731 | inode->i_sb->s_blocksize); | |
4b11111a MS |
1732 | sad->extPosition = |
1733 | cpu_to_le32(epos->block.logicalBlockNum); | |
28de7948 | 1734 | break; |
cb00ea35 | 1735 | case ICBTAG_FLAG_AD_LONG: |
5ca4e4be | 1736 | lad = (struct long_ad *)sptr; |
28de7948 CG |
1737 | lad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS | |
1738 | inode->i_sb->s_blocksize); | |
1739 | lad->extLocation = cpu_to_lelb(epos->block); | |
1740 | memset(lad->impUse, 0x00, sizeof(lad->impUse)); | |
1741 | break; | |
1da177e4 | 1742 | } |
cb00ea35 | 1743 | if (epos->bh) { |
28de7948 | 1744 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 1745 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) |
ff116fc8 | 1746 | udf_update_tag(epos->bh->b_data, loffset); |
1da177e4 | 1747 | else |
4b11111a MS |
1748 | udf_update_tag(epos->bh->b_data, |
1749 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 1750 | mark_buffer_dirty_inode(epos->bh, inode); |
3bf25cb4 | 1751 | brelse(epos->bh); |
28de7948 | 1752 | } else { |
1da177e4 | 1753 | mark_inode_dirty(inode); |
28de7948 | 1754 | } |
ff116fc8 | 1755 | epos->bh = nbh; |
1da177e4 LT |
1756 | } |
1757 | ||
ff116fc8 | 1758 | etype = udf_write_aext(inode, epos, eloc, elen, inc); |
1da177e4 | 1759 | |
cb00ea35 | 1760 | if (!epos->bh) { |
48d6d8ff | 1761 | iinfo->i_lenAlloc += adsize; |
1da177e4 | 1762 | mark_inode_dirty(inode); |
cb00ea35 | 1763 | } else { |
ff116fc8 | 1764 | aed = (struct allocExtDesc *)epos->bh->b_data; |
c2104fda | 1765 | le32_add_cpu(&aed->lengthAllocDescs, adsize); |
4b11111a MS |
1766 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
1767 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) | |
1768 | udf_update_tag(epos->bh->b_data, | |
1769 | epos->offset + (inc ? 0 : adsize)); | |
1da177e4 | 1770 | else |
4b11111a MS |
1771 | udf_update_tag(epos->bh->b_data, |
1772 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 1773 | mark_buffer_dirty_inode(epos->bh, inode); |
1da177e4 LT |
1774 | } |
1775 | ||
1776 | return etype; | |
1777 | } | |
1778 | ||
4b11111a | 1779 | int8_t udf_write_aext(struct inode *inode, struct extent_position *epos, |
97e961fd | 1780 | struct kernel_lb_addr *eloc, uint32_t elen, int inc) |
1da177e4 LT |
1781 | { |
1782 | int adsize; | |
1783 | uint8_t *ptr; | |
5ca4e4be PE |
1784 | struct short_ad *sad; |
1785 | struct long_ad *lad; | |
48d6d8ff | 1786 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 | 1787 | |
ff116fc8 | 1788 | if (!epos->bh) |
48d6d8ff | 1789 | ptr = iinfo->i_ext.i_data + epos->offset - |
4b11111a | 1790 | udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1791 | iinfo->i_lenEAttr; |
1da177e4 | 1792 | else |
ff116fc8 | 1793 | ptr = epos->bh->b_data + epos->offset; |
1da177e4 | 1794 | |
48d6d8ff | 1795 | switch (iinfo->i_alloc_type) { |
cb00ea35 | 1796 | case ICBTAG_FLAG_AD_SHORT: |
5ca4e4be | 1797 | sad = (struct short_ad *)ptr; |
28de7948 | 1798 | sad->extLength = cpu_to_le32(elen); |
97e961fd | 1799 | sad->extPosition = cpu_to_le32(eloc->logicalBlockNum); |
5ca4e4be | 1800 | adsize = sizeof(struct short_ad); |
28de7948 | 1801 | break; |
cb00ea35 | 1802 | case ICBTAG_FLAG_AD_LONG: |
5ca4e4be | 1803 | lad = (struct long_ad *)ptr; |
28de7948 | 1804 | lad->extLength = cpu_to_le32(elen); |
97e961fd | 1805 | lad->extLocation = cpu_to_lelb(*eloc); |
28de7948 | 1806 | memset(lad->impUse, 0x00, sizeof(lad->impUse)); |
5ca4e4be | 1807 | adsize = sizeof(struct long_ad); |
28de7948 | 1808 | break; |
cb00ea35 CG |
1809 | default: |
1810 | return -1; | |
1da177e4 LT |
1811 | } |
1812 | ||
cb00ea35 | 1813 | if (epos->bh) { |
28de7948 | 1814 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 1815 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) { |
4b11111a MS |
1816 | struct allocExtDesc *aed = |
1817 | (struct allocExtDesc *)epos->bh->b_data; | |
ff116fc8 | 1818 | udf_update_tag(epos->bh->b_data, |
4b11111a MS |
1819 | le32_to_cpu(aed->lengthAllocDescs) + |
1820 | sizeof(struct allocExtDesc)); | |
1da177e4 | 1821 | } |
ff116fc8 | 1822 | mark_buffer_dirty_inode(epos->bh, inode); |
28de7948 | 1823 | } else { |
1da177e4 | 1824 | mark_inode_dirty(inode); |
28de7948 | 1825 | } |
1da177e4 LT |
1826 | |
1827 | if (inc) | |
ff116fc8 | 1828 | epos->offset += adsize; |
28de7948 | 1829 | |
1da177e4 LT |
1830 | return (elen >> 30); |
1831 | } | |
1832 | ||
4b11111a | 1833 | int8_t udf_next_aext(struct inode *inode, struct extent_position *epos, |
5ca4e4be | 1834 | struct kernel_lb_addr *eloc, uint32_t *elen, int inc) |
1da177e4 LT |
1835 | { |
1836 | int8_t etype; | |
1837 | ||
ff116fc8 | 1838 | while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) == |
cb00ea35 | 1839 | (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) { |
4b11111a | 1840 | int block; |
ff116fc8 JK |
1841 | epos->block = *eloc; |
1842 | epos->offset = sizeof(struct allocExtDesc); | |
3bf25cb4 | 1843 | brelse(epos->bh); |
97e961fd | 1844 | block = udf_get_lb_pblock(inode->i_sb, &epos->block, 0); |
4b11111a MS |
1845 | epos->bh = udf_tread(inode->i_sb, block); |
1846 | if (!epos->bh) { | |
1847 | udf_debug("reading block %d failed!\n", block); | |
1da177e4 LT |
1848 | return -1; |
1849 | } | |
1850 | } | |
1851 | ||
1852 | return etype; | |
1853 | } | |
1854 | ||
4b11111a | 1855 | int8_t udf_current_aext(struct inode *inode, struct extent_position *epos, |
5ca4e4be | 1856 | struct kernel_lb_addr *eloc, uint32_t *elen, int inc) |
1da177e4 LT |
1857 | { |
1858 | int alen; | |
1859 | int8_t etype; | |
1860 | uint8_t *ptr; | |
5ca4e4be PE |
1861 | struct short_ad *sad; |
1862 | struct long_ad *lad; | |
48d6d8ff | 1863 | struct udf_inode_info *iinfo = UDF_I(inode); |
28de7948 | 1864 | |
cb00ea35 | 1865 | if (!epos->bh) { |
ff116fc8 JK |
1866 | if (!epos->offset) |
1867 | epos->offset = udf_file_entry_alloc_offset(inode); | |
48d6d8ff | 1868 | ptr = iinfo->i_ext.i_data + epos->offset - |
4b11111a | 1869 | udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1870 | iinfo->i_lenEAttr; |
4b11111a | 1871 | alen = udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1872 | iinfo->i_lenAlloc; |
cb00ea35 | 1873 | } else { |
ff116fc8 JK |
1874 | if (!epos->offset) |
1875 | epos->offset = sizeof(struct allocExtDesc); | |
1876 | ptr = epos->bh->b_data + epos->offset; | |
28de7948 | 1877 | alen = sizeof(struct allocExtDesc) + |
4b11111a MS |
1878 | le32_to_cpu(((struct allocExtDesc *)epos->bh->b_data)-> |
1879 | lengthAllocDescs); | |
1da177e4 LT |
1880 | } |
1881 | ||
48d6d8ff | 1882 | switch (iinfo->i_alloc_type) { |
cb00ea35 | 1883 | case ICBTAG_FLAG_AD_SHORT: |
4b11111a MS |
1884 | sad = udf_get_fileshortad(ptr, alen, &epos->offset, inc); |
1885 | if (!sad) | |
28de7948 CG |
1886 | return -1; |
1887 | etype = le32_to_cpu(sad->extLength) >> 30; | |
1888 | eloc->logicalBlockNum = le32_to_cpu(sad->extPosition); | |
4b11111a | 1889 | eloc->partitionReferenceNum = |
48d6d8ff | 1890 | iinfo->i_location.partitionReferenceNum; |
28de7948 CG |
1891 | *elen = le32_to_cpu(sad->extLength) & UDF_EXTENT_LENGTH_MASK; |
1892 | break; | |
cb00ea35 | 1893 | case ICBTAG_FLAG_AD_LONG: |
4b11111a MS |
1894 | lad = udf_get_filelongad(ptr, alen, &epos->offset, inc); |
1895 | if (!lad) | |
1da177e4 | 1896 | return -1; |
28de7948 CG |
1897 | etype = le32_to_cpu(lad->extLength) >> 30; |
1898 | *eloc = lelb_to_cpu(lad->extLocation); | |
1899 | *elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK; | |
1900 | break; | |
1901 | default: | |
4b11111a | 1902 | udf_debug("alloc_type = %d unsupported\n", |
48d6d8ff | 1903 | iinfo->i_alloc_type); |
28de7948 | 1904 | return -1; |
1da177e4 LT |
1905 | } |
1906 | ||
1907 | return etype; | |
1908 | } | |
1909 | ||
28de7948 | 1910 | static int8_t udf_insert_aext(struct inode *inode, struct extent_position epos, |
5ca4e4be | 1911 | struct kernel_lb_addr neloc, uint32_t nelen) |
1da177e4 | 1912 | { |
5ca4e4be | 1913 | struct kernel_lb_addr oeloc; |
1da177e4 LT |
1914 | uint32_t oelen; |
1915 | int8_t etype; | |
1916 | ||
ff116fc8 | 1917 | if (epos.bh) |
3bf25cb4 | 1918 | get_bh(epos.bh); |
1da177e4 | 1919 | |
cb00ea35 | 1920 | while ((etype = udf_next_aext(inode, &epos, &oeloc, &oelen, 0)) != -1) { |
97e961fd | 1921 | udf_write_aext(inode, &epos, &neloc, nelen, 1); |
1da177e4 LT |
1922 | neloc = oeloc; |
1923 | nelen = (etype << 30) | oelen; | |
1924 | } | |
97e961fd | 1925 | udf_add_aext(inode, &epos, &neloc, nelen, 1); |
3bf25cb4 | 1926 | brelse(epos.bh); |
28de7948 | 1927 | |
1da177e4 LT |
1928 | return (nelen >> 30); |
1929 | } | |
1930 | ||
4b11111a | 1931 | int8_t udf_delete_aext(struct inode *inode, struct extent_position epos, |
5ca4e4be | 1932 | struct kernel_lb_addr eloc, uint32_t elen) |
1da177e4 | 1933 | { |
ff116fc8 JK |
1934 | struct extent_position oepos; |
1935 | int adsize; | |
1da177e4 LT |
1936 | int8_t etype; |
1937 | struct allocExtDesc *aed; | |
48d6d8ff | 1938 | struct udf_inode_info *iinfo; |
1da177e4 | 1939 | |
cb00ea35 | 1940 | if (epos.bh) { |
3bf25cb4 JK |
1941 | get_bh(epos.bh); |
1942 | get_bh(epos.bh); | |
1da177e4 LT |
1943 | } |
1944 | ||
48d6d8ff MS |
1945 | iinfo = UDF_I(inode); |
1946 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) | |
5ca4e4be | 1947 | adsize = sizeof(struct short_ad); |
48d6d8ff | 1948 | else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) |
5ca4e4be | 1949 | adsize = sizeof(struct long_ad); |
1da177e4 LT |
1950 | else |
1951 | adsize = 0; | |
1952 | ||
ff116fc8 JK |
1953 | oepos = epos; |
1954 | if (udf_next_aext(inode, &epos, &eloc, &elen, 1) == -1) | |
1da177e4 LT |
1955 | return -1; |
1956 | ||
cb00ea35 | 1957 | while ((etype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) { |
97e961fd | 1958 | udf_write_aext(inode, &oepos, &eloc, (etype << 30) | elen, 1); |
cb00ea35 | 1959 | if (oepos.bh != epos.bh) { |
ff116fc8 | 1960 | oepos.block = epos.block; |
3bf25cb4 JK |
1961 | brelse(oepos.bh); |
1962 | get_bh(epos.bh); | |
ff116fc8 JK |
1963 | oepos.bh = epos.bh; |
1964 | oepos.offset = epos.offset - adsize; | |
1da177e4 LT |
1965 | } |
1966 | } | |
5ca4e4be | 1967 | memset(&eloc, 0x00, sizeof(struct kernel_lb_addr)); |
1da177e4 LT |
1968 | elen = 0; |
1969 | ||
cb00ea35 | 1970 | if (epos.bh != oepos.bh) { |
97e961fd PE |
1971 | udf_free_blocks(inode->i_sb, inode, &epos.block, 0, 1); |
1972 | udf_write_aext(inode, &oepos, &eloc, elen, 1); | |
1973 | udf_write_aext(inode, &oepos, &eloc, elen, 1); | |
cb00ea35 | 1974 | if (!oepos.bh) { |
48d6d8ff | 1975 | iinfo->i_lenAlloc -= (adsize * 2); |
1da177e4 | 1976 | mark_inode_dirty(inode); |
cb00ea35 | 1977 | } else { |
ff116fc8 | 1978 | aed = (struct allocExtDesc *)oepos.bh->b_data; |
c2104fda | 1979 | le32_add_cpu(&aed->lengthAllocDescs, -(2 * adsize)); |
28de7948 | 1980 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 1981 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) |
4b11111a MS |
1982 | udf_update_tag(oepos.bh->b_data, |
1983 | oepos.offset - (2 * adsize)); | |
1da177e4 | 1984 | else |
4b11111a MS |
1985 | udf_update_tag(oepos.bh->b_data, |
1986 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 1987 | mark_buffer_dirty_inode(oepos.bh, inode); |
1da177e4 | 1988 | } |
cb00ea35 | 1989 | } else { |
97e961fd | 1990 | udf_write_aext(inode, &oepos, &eloc, elen, 1); |
cb00ea35 | 1991 | if (!oepos.bh) { |
48d6d8ff | 1992 | iinfo->i_lenAlloc -= adsize; |
1da177e4 | 1993 | mark_inode_dirty(inode); |
cb00ea35 | 1994 | } else { |
ff116fc8 | 1995 | aed = (struct allocExtDesc *)oepos.bh->b_data; |
c2104fda | 1996 | le32_add_cpu(&aed->lengthAllocDescs, -adsize); |
28de7948 | 1997 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 1998 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) |
4b11111a MS |
1999 | udf_update_tag(oepos.bh->b_data, |
2000 | epos.offset - adsize); | |
1da177e4 | 2001 | else |
4b11111a MS |
2002 | udf_update_tag(oepos.bh->b_data, |
2003 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 2004 | mark_buffer_dirty_inode(oepos.bh, inode); |
1da177e4 LT |
2005 | } |
2006 | } | |
647bd61a | 2007 | |
3bf25cb4 JK |
2008 | brelse(epos.bh); |
2009 | brelse(oepos.bh); | |
28de7948 | 2010 | |
1da177e4 LT |
2011 | return (elen >> 30); |
2012 | } | |
2013 | ||
4b11111a | 2014 | int8_t inode_bmap(struct inode *inode, sector_t block, |
5ca4e4be | 2015 | struct extent_position *pos, struct kernel_lb_addr *eloc, |
4b11111a | 2016 | uint32_t *elen, sector_t *offset) |
1da177e4 | 2017 | { |
4b11111a | 2018 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; |
cb00ea35 | 2019 | loff_t lbcount = 0, bcount = |
4b11111a | 2020 | (loff_t) block << blocksize_bits; |
1da177e4 | 2021 | int8_t etype; |
48d6d8ff | 2022 | struct udf_inode_info *iinfo; |
1da177e4 | 2023 | |
48d6d8ff | 2024 | iinfo = UDF_I(inode); |
ff116fc8 | 2025 | pos->offset = 0; |
48d6d8ff | 2026 | pos->block = iinfo->i_location; |
ff116fc8 | 2027 | pos->bh = NULL; |
1da177e4 | 2028 | *elen = 0; |
1da177e4 | 2029 | |
cb00ea35 | 2030 | do { |
4b11111a MS |
2031 | etype = udf_next_aext(inode, pos, eloc, elen, 1); |
2032 | if (etype == -1) { | |
2033 | *offset = (bcount - lbcount) >> blocksize_bits; | |
48d6d8ff | 2034 | iinfo->i_lenExtents = lbcount; |
1da177e4 LT |
2035 | return -1; |
2036 | } | |
2037 | lbcount += *elen; | |
2038 | } while (lbcount <= bcount); | |
2039 | ||
4b11111a | 2040 | *offset = (bcount + *elen - lbcount) >> blocksize_bits; |
1da177e4 LT |
2041 | |
2042 | return etype; | |
2043 | } | |
2044 | ||
60448b1d | 2045 | long udf_block_map(struct inode *inode, sector_t block) |
1da177e4 | 2046 | { |
5ca4e4be | 2047 | struct kernel_lb_addr eloc; |
ff116fc8 | 2048 | uint32_t elen; |
60448b1d | 2049 | sector_t offset; |
28de7948 | 2050 | struct extent_position epos = {}; |
1da177e4 LT |
2051 | int ret; |
2052 | ||
2053 | lock_kernel(); | |
2054 | ||
4b11111a MS |
2055 | if (inode_bmap(inode, block, &epos, &eloc, &elen, &offset) == |
2056 | (EXT_RECORDED_ALLOCATED >> 30)) | |
97e961fd | 2057 | ret = udf_get_lb_pblock(inode->i_sb, &eloc, offset); |
1da177e4 LT |
2058 | else |
2059 | ret = 0; | |
2060 | ||
2061 | unlock_kernel(); | |
3bf25cb4 | 2062 | brelse(epos.bh); |
1da177e4 LT |
2063 | |
2064 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_VARCONV)) | |
2065 | return udf_fixed_to_variable(ret); | |
2066 | else | |
2067 | return ret; | |
2068 | } |