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> | |
40 | ||
41 | #include "udf_i.h" | |
42 | #include "udf_sb.h" | |
43 | ||
44 | MODULE_AUTHOR("Ben Fennema"); | |
45 | MODULE_DESCRIPTION("Universal Disk Format Filesystem"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
48 | #define EXTENT_MERGE_SIZE 5 | |
49 | ||
50 | static mode_t udf_convert_permissions(struct fileEntry *); | |
51 | static int udf_update_inode(struct inode *, int); | |
52 | static void udf_fill_inode(struct inode *, struct buffer_head *); | |
647bd61a | 53 | static int udf_alloc_i_data(struct inode *inode, size_t size); |
60448b1d | 54 | static struct buffer_head *inode_getblk(struct inode *, sector_t, int *, |
1ed16171 | 55 | sector_t *, int *); |
ff116fc8 | 56 | static int8_t udf_insert_aext(struct inode *, struct extent_position, |
cb00ea35 | 57 | kernel_lb_addr, uint32_t); |
1da177e4 | 58 | static void udf_split_extents(struct inode *, int *, int, int, |
cb00ea35 | 59 | kernel_long_ad[EXTENT_MERGE_SIZE], int *); |
1da177e4 | 60 | static void udf_prealloc_extents(struct inode *, int, int, |
cb00ea35 | 61 | kernel_long_ad[EXTENT_MERGE_SIZE], int *); |
1da177e4 | 62 | static void udf_merge_extents(struct inode *, |
cb00ea35 | 63 | kernel_long_ad[EXTENT_MERGE_SIZE], int *); |
1da177e4 | 64 | static void udf_update_extents(struct inode *, |
cb00ea35 CG |
65 | kernel_long_ad[EXTENT_MERGE_SIZE], int, int, |
66 | struct extent_position *); | |
1da177e4 LT |
67 | static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int); |
68 | ||
b1e32126 | 69 | |
cb00ea35 | 70 | void udf_delete_inode(struct inode *inode) |
1da177e4 | 71 | { |
fef26658 MF |
72 | truncate_inode_pages(&inode->i_data, 0); |
73 | ||
1da177e4 LT |
74 | if (is_bad_inode(inode)) |
75 | goto no_delete; | |
76 | ||
77 | inode->i_size = 0; | |
78 | udf_truncate(inode); | |
79 | lock_kernel(); | |
80 | ||
81 | udf_update_inode(inode, IS_SYNC(inode)); | |
82 | udf_free_inode(inode); | |
83 | ||
84 | unlock_kernel(); | |
85 | return; | |
28de7948 CG |
86 | |
87 | no_delete: | |
1da177e4 LT |
88 | clear_inode(inode); |
89 | } | |
90 | ||
74584ae5 JK |
91 | /* |
92 | * If we are going to release inode from memory, we discard preallocation and | |
93 | * truncate last inode extent to proper length. We could use drop_inode() but | |
94 | * it's called under inode_lock and thus we cannot mark inode dirty there. We | |
95 | * use clear_inode() but we have to make sure to write inode as it's not written | |
96 | * automatically. | |
97 | */ | |
1da177e4 LT |
98 | void udf_clear_inode(struct inode *inode) |
99 | { | |
48d6d8ff | 100 | struct udf_inode_info *iinfo; |
1da177e4 LT |
101 | if (!(inode->i_sb->s_flags & MS_RDONLY)) { |
102 | lock_kernel(); | |
74584ae5 | 103 | /* Discard preallocation for directories, symlinks, etc. */ |
1da177e4 | 104 | udf_discard_prealloc(inode); |
74584ae5 | 105 | udf_truncate_tail_extent(inode); |
1da177e4 | 106 | unlock_kernel(); |
32a8f24d | 107 | write_inode_now(inode, 0); |
1da177e4 | 108 | } |
48d6d8ff MS |
109 | iinfo = UDF_I(inode); |
110 | kfree(iinfo->i_ext.i_data); | |
111 | iinfo->i_ext.i_data = NULL; | |
1da177e4 LT |
112 | } |
113 | ||
114 | static int udf_writepage(struct page *page, struct writeback_control *wbc) | |
115 | { | |
116 | return block_write_full_page(page, udf_get_block, wbc); | |
117 | } | |
118 | ||
119 | static int udf_readpage(struct file *file, struct page *page) | |
120 | { | |
121 | return block_read_full_page(page, udf_get_block); | |
122 | } | |
123 | ||
be021ee4 NP |
124 | static int udf_write_begin(struct file *file, struct address_space *mapping, |
125 | loff_t pos, unsigned len, unsigned flags, | |
126 | struct page **pagep, void **fsdata) | |
1da177e4 | 127 | { |
be021ee4 NP |
128 | *pagep = NULL; |
129 | return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, | |
130 | udf_get_block); | |
1da177e4 LT |
131 | } |
132 | ||
133 | static sector_t udf_bmap(struct address_space *mapping, sector_t block) | |
134 | { | |
cb00ea35 | 135 | return generic_block_bmap(mapping, block, udf_get_block); |
1da177e4 LT |
136 | } |
137 | ||
f5e54d6e | 138 | const struct address_space_operations udf_aops = { |
28de7948 CG |
139 | .readpage = udf_readpage, |
140 | .writepage = udf_writepage, | |
141 | .sync_page = block_sync_page, | |
be021ee4 NP |
142 | .write_begin = udf_write_begin, |
143 | .write_end = generic_write_end, | |
28de7948 | 144 | .bmap = udf_bmap, |
1da177e4 LT |
145 | }; |
146 | ||
cb00ea35 | 147 | void udf_expand_file_adinicb(struct inode *inode, int newsize, int *err) |
1da177e4 LT |
148 | { |
149 | struct page *page; | |
150 | char *kaddr; | |
48d6d8ff | 151 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
152 | struct writeback_control udf_wbc = { |
153 | .sync_mode = WB_SYNC_NONE, | |
154 | .nr_to_write = 1, | |
155 | }; | |
156 | ||
157 | /* from now on we have normal address_space methods */ | |
158 | inode->i_data.a_ops = &udf_aops; | |
159 | ||
48d6d8ff | 160 | if (!iinfo->i_lenAlloc) { |
1da177e4 | 161 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
48d6d8ff | 162 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
1da177e4 | 163 | else |
48d6d8ff | 164 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
1da177e4 LT |
165 | mark_inode_dirty(inode); |
166 | return; | |
167 | } | |
168 | ||
169 | page = grab_cache_page(inode->i_mapping, 0); | |
cd7619d6 MM |
170 | BUG_ON(!PageLocked(page)); |
171 | ||
cb00ea35 | 172 | if (!PageUptodate(page)) { |
1da177e4 | 173 | kaddr = kmap(page); |
48d6d8ff MS |
174 | memset(kaddr + iinfo->i_lenAlloc, 0x00, |
175 | PAGE_CACHE_SIZE - iinfo->i_lenAlloc); | |
176 | memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr, | |
177 | iinfo->i_lenAlloc); | |
1da177e4 LT |
178 | flush_dcache_page(page); |
179 | SetPageUptodate(page); | |
180 | kunmap(page); | |
181 | } | |
48d6d8ff MS |
182 | memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00, |
183 | iinfo->i_lenAlloc); | |
184 | iinfo->i_lenAlloc = 0; | |
1da177e4 | 185 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) |
48d6d8ff | 186 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; |
1da177e4 | 187 | else |
48d6d8ff | 188 | iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; |
1da177e4 LT |
189 | |
190 | inode->i_data.a_ops->writepage(page, &udf_wbc); | |
191 | page_cache_release(page); | |
192 | ||
193 | mark_inode_dirty(inode); | |
194 | } | |
195 | ||
cb00ea35 CG |
196 | struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block, |
197 | int *err) | |
1da177e4 LT |
198 | { |
199 | int newblock; | |
ff116fc8 JK |
200 | struct buffer_head *dbh = NULL; |
201 | kernel_lb_addr eloc; | |
202 | uint32_t elen; | |
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; |
05343c4f | 277 | elen = inode->i_sb->s_blocksize; |
48d6d8ff | 278 | iinfo->i_lenExtents = elen; |
ff116fc8 | 279 | epos.bh = NULL; |
48d6d8ff | 280 | epos.block = iinfo->i_location; |
ff116fc8 JK |
281 | epos.offset = udf_file_entry_alloc_offset(inode); |
282 | udf_add_aext(inode, &epos, eloc, elen, 0); | |
1da177e4 LT |
283 | /* UniqueID stuff */ |
284 | ||
3bf25cb4 | 285 | brelse(epos.bh); |
1da177e4 LT |
286 | mark_inode_dirty(inode); |
287 | return dbh; | |
288 | } | |
289 | ||
cb00ea35 CG |
290 | static int udf_get_block(struct inode *inode, sector_t block, |
291 | struct buffer_head *bh_result, int create) | |
1da177e4 LT |
292 | { |
293 | int err, new; | |
294 | struct buffer_head *bh; | |
1ed16171 | 295 | sector_t phys = 0; |
48d6d8ff | 296 | struct udf_inode_info *iinfo; |
1da177e4 | 297 | |
cb00ea35 | 298 | if (!create) { |
1da177e4 LT |
299 | phys = udf_block_map(inode, block); |
300 | if (phys) | |
301 | map_bh(bh_result, inode->i_sb, phys); | |
302 | return 0; | |
303 | } | |
304 | ||
305 | err = -EIO; | |
306 | new = 0; | |
307 | bh = NULL; | |
308 | ||
309 | lock_kernel(); | |
310 | ||
311 | if (block < 0) | |
312 | goto abort_negative; | |
313 | ||
48d6d8ff MS |
314 | iinfo = UDF_I(inode); |
315 | if (block == iinfo->i_next_alloc_block + 1) { | |
316 | iinfo->i_next_alloc_block++; | |
317 | iinfo->i_next_alloc_goal++; | |
1da177e4 LT |
318 | } |
319 | ||
320 | err = 0; | |
321 | ||
322 | bh = inode_getblk(inode, block, &err, &phys, &new); | |
2c2111c2 | 323 | BUG_ON(bh); |
1da177e4 LT |
324 | if (err) |
325 | goto abort; | |
2c2111c2 | 326 | BUG_ON(!phys); |
1da177e4 LT |
327 | |
328 | if (new) | |
329 | set_buffer_new(bh_result); | |
330 | map_bh(bh_result, inode->i_sb, phys); | |
28de7948 CG |
331 | |
332 | abort: | |
1da177e4 LT |
333 | unlock_kernel(); |
334 | return err; | |
335 | ||
28de7948 | 336 | abort_negative: |
1da177e4 LT |
337 | udf_warning(inode->i_sb, "udf_get_block", "block < 0"); |
338 | goto abort; | |
339 | } | |
340 | ||
cb00ea35 CG |
341 | static struct buffer_head *udf_getblk(struct inode *inode, long block, |
342 | int create, int *err) | |
1da177e4 | 343 | { |
28de7948 | 344 | struct buffer_head *bh; |
1da177e4 LT |
345 | struct buffer_head dummy; |
346 | ||
347 | dummy.b_state = 0; | |
348 | dummy.b_blocknr = -1000; | |
349 | *err = udf_get_block(inode, block, &dummy, create); | |
cb00ea35 | 350 | if (!*err && buffer_mapped(&dummy)) { |
1da177e4 | 351 | bh = sb_getblk(inode->i_sb, dummy.b_blocknr); |
cb00ea35 | 352 | if (buffer_new(&dummy)) { |
1da177e4 LT |
353 | lock_buffer(bh); |
354 | memset(bh->b_data, 0x00, inode->i_sb->s_blocksize); | |
355 | set_buffer_uptodate(bh); | |
356 | unlock_buffer(bh); | |
357 | mark_buffer_dirty_inode(bh, inode); | |
358 | } | |
359 | return bh; | |
360 | } | |
28de7948 | 361 | |
1da177e4 LT |
362 | return NULL; |
363 | } | |
364 | ||
31170b6a JK |
365 | /* Extend the file by 'blocks' blocks, return the number of extents added */ |
366 | int udf_extend_file(struct inode *inode, struct extent_position *last_pos, | |
4b11111a | 367 | kernel_long_ad *last_ext, sector_t blocks) |
31170b6a JK |
368 | { |
369 | sector_t add; | |
370 | int count = 0, fake = !(last_ext->extLength & UDF_EXTENT_LENGTH_MASK); | |
371 | struct super_block *sb = inode->i_sb; | |
28de7948 | 372 | kernel_lb_addr prealloc_loc = {}; |
31170b6a | 373 | int prealloc_len = 0; |
48d6d8ff | 374 | struct udf_inode_info *iinfo; |
31170b6a JK |
375 | |
376 | /* The previous extent is fake and we should not extend by anything | |
377 | * - there's nothing to do... */ | |
378 | if (!blocks && fake) | |
379 | return 0; | |
28de7948 | 380 | |
48d6d8ff | 381 | iinfo = UDF_I(inode); |
31170b6a JK |
382 | /* Round the last extent up to a multiple of block size */ |
383 | if (last_ext->extLength & (sb->s_blocksize - 1)) { | |
384 | last_ext->extLength = | |
28de7948 CG |
385 | (last_ext->extLength & UDF_EXTENT_FLAG_MASK) | |
386 | (((last_ext->extLength & UDF_EXTENT_LENGTH_MASK) + | |
387 | sb->s_blocksize - 1) & ~(sb->s_blocksize - 1)); | |
48d6d8ff MS |
388 | iinfo->i_lenExtents = |
389 | (iinfo->i_lenExtents + sb->s_blocksize - 1) & | |
28de7948 | 390 | ~(sb->s_blocksize - 1); |
31170b6a | 391 | } |
28de7948 | 392 | |
31170b6a | 393 | /* Last extent are just preallocated blocks? */ |
4b11111a MS |
394 | if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) == |
395 | EXT_NOT_RECORDED_ALLOCATED) { | |
31170b6a JK |
396 | /* Save the extent so that we can reattach it to the end */ |
397 | prealloc_loc = last_ext->extLocation; | |
398 | prealloc_len = last_ext->extLength; | |
399 | /* Mark the extent as a hole */ | |
400 | last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | | |
28de7948 | 401 | (last_ext->extLength & UDF_EXTENT_LENGTH_MASK); |
31170b6a | 402 | last_ext->extLocation.logicalBlockNum = 0; |
4b11111a | 403 | last_ext->extLocation.partitionReferenceNum = 0; |
31170b6a | 404 | } |
28de7948 | 405 | |
31170b6a | 406 | /* Can we merge with the previous extent? */ |
4b11111a MS |
407 | if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) == |
408 | EXT_NOT_RECORDED_NOT_ALLOCATED) { | |
409 | add = ((1 << 30) - sb->s_blocksize - | |
410 | (last_ext->extLength & UDF_EXTENT_LENGTH_MASK)) >> | |
411 | sb->s_blocksize_bits; | |
31170b6a JK |
412 | if (add > blocks) |
413 | add = blocks; | |
414 | blocks -= add; | |
415 | last_ext->extLength += add << sb->s_blocksize_bits; | |
416 | } | |
417 | ||
418 | if (fake) { | |
419 | udf_add_aext(inode, last_pos, last_ext->extLocation, | |
cb00ea35 | 420 | last_ext->extLength, 1); |
31170b6a | 421 | count++; |
4b11111a MS |
422 | } else |
423 | udf_write_aext(inode, last_pos, last_ext->extLocation, | |
424 | last_ext->extLength, 1); | |
28de7948 | 425 | |
31170b6a JK |
426 | /* Managed to do everything necessary? */ |
427 | if (!blocks) | |
428 | goto out; | |
429 | ||
430 | /* All further extents will be NOT_RECORDED_NOT_ALLOCATED */ | |
431 | last_ext->extLocation.logicalBlockNum = 0; | |
4b11111a | 432 | last_ext->extLocation.partitionReferenceNum = 0; |
28de7948 | 433 | add = (1 << (30-sb->s_blocksize_bits)) - 1; |
4b11111a MS |
434 | last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | |
435 | (add << sb->s_blocksize_bits); | |
28de7948 | 436 | |
31170b6a JK |
437 | /* Create enough extents to cover the whole hole */ |
438 | while (blocks > add) { | |
439 | blocks -= add; | |
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 | } | |
445 | if (blocks) { | |
446 | last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | | |
28de7948 | 447 | (blocks << sb->s_blocksize_bits); |
31170b6a | 448 | if (udf_add_aext(inode, last_pos, last_ext->extLocation, |
cb00ea35 | 449 | last_ext->extLength, 1) == -1) |
31170b6a JK |
450 | return -1; |
451 | count++; | |
452 | } | |
28de7948 CG |
453 | |
454 | out: | |
31170b6a JK |
455 | /* Do we have some preallocated blocks saved? */ |
456 | if (prealloc_len) { | |
4b11111a MS |
457 | if (udf_add_aext(inode, last_pos, prealloc_loc, |
458 | prealloc_len, 1) == -1) | |
31170b6a JK |
459 | return -1; |
460 | last_ext->extLocation = prealloc_loc; | |
461 | last_ext->extLength = prealloc_len; | |
462 | count++; | |
463 | } | |
28de7948 | 464 | |
31170b6a | 465 | /* last_pos should point to the last written extent... */ |
48d6d8ff | 466 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) |
31170b6a | 467 | last_pos->offset -= sizeof(short_ad); |
48d6d8ff | 468 | else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) |
31170b6a JK |
469 | last_pos->offset -= sizeof(long_ad); |
470 | else | |
471 | return -1; | |
28de7948 | 472 | |
31170b6a JK |
473 | return count; |
474 | } | |
475 | ||
cb00ea35 | 476 | static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, |
1ed16171 | 477 | int *err, sector_t *phys, int *new) |
1da177e4 | 478 | { |
31170b6a | 479 | static sector_t last_block; |
ff116fc8 | 480 | struct buffer_head *result = NULL; |
1da177e4 | 481 | kernel_long_ad laarr[EXTENT_MERGE_SIZE]; |
ff116fc8 | 482 | struct extent_position prev_epos, cur_epos, next_epos; |
1da177e4 | 483 | int count = 0, startnum = 0, endnum = 0; |
85d71244 JK |
484 | uint32_t elen = 0, tmpelen; |
485 | kernel_lb_addr eloc, tmpeloc; | |
1da177e4 | 486 | int c = 1; |
60448b1d JK |
487 | loff_t lbcount = 0, b_off = 0; |
488 | uint32_t newblocknum, newblock; | |
489 | sector_t offset = 0; | |
1da177e4 | 490 | int8_t etype; |
48d6d8ff MS |
491 | struct udf_inode_info *iinfo = UDF_I(inode); |
492 | int goal = 0, pgoal = iinfo->i_location.logicalBlockNum; | |
31170b6a | 493 | int lastblock = 0; |
1da177e4 | 494 | |
ff116fc8 | 495 | prev_epos.offset = udf_file_entry_alloc_offset(inode); |
48d6d8ff | 496 | prev_epos.block = iinfo->i_location; |
ff116fc8 JK |
497 | prev_epos.bh = NULL; |
498 | cur_epos = next_epos = prev_epos; | |
28de7948 | 499 | b_off = (loff_t)block << inode->i_sb->s_blocksize_bits; |
1da177e4 LT |
500 | |
501 | /* find the extent which contains the block we are looking for. | |
cb00ea35 CG |
502 | alternate between laarr[0] and laarr[1] for locations of the |
503 | current extent, and the previous extent */ | |
504 | do { | |
505 | if (prev_epos.bh != cur_epos.bh) { | |
3bf25cb4 JK |
506 | brelse(prev_epos.bh); |
507 | get_bh(cur_epos.bh); | |
ff116fc8 | 508 | prev_epos.bh = cur_epos.bh; |
1da177e4 | 509 | } |
cb00ea35 | 510 | if (cur_epos.bh != next_epos.bh) { |
3bf25cb4 JK |
511 | brelse(cur_epos.bh); |
512 | get_bh(next_epos.bh); | |
ff116fc8 | 513 | cur_epos.bh = next_epos.bh; |
1da177e4 LT |
514 | } |
515 | ||
516 | lbcount += elen; | |
517 | ||
ff116fc8 JK |
518 | prev_epos.block = cur_epos.block; |
519 | cur_epos.block = next_epos.block; | |
1da177e4 | 520 | |
ff116fc8 JK |
521 | prev_epos.offset = cur_epos.offset; |
522 | cur_epos.offset = next_epos.offset; | |
1da177e4 | 523 | |
4b11111a MS |
524 | etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 1); |
525 | if (etype == -1) | |
1da177e4 LT |
526 | break; |
527 | ||
528 | c = !c; | |
529 | ||
530 | laarr[c].extLength = (etype << 30) | elen; | |
531 | laarr[c].extLocation = eloc; | |
532 | ||
533 | if (etype != (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) | |
534 | pgoal = eloc.logicalBlockNum + | |
28de7948 CG |
535 | ((elen + inode->i_sb->s_blocksize - 1) >> |
536 | inode->i_sb->s_blocksize_bits); | |
1da177e4 | 537 | |
cb00ea35 | 538 | count++; |
1da177e4 LT |
539 | } while (lbcount + elen <= b_off); |
540 | ||
541 | b_off -= lbcount; | |
542 | offset = b_off >> inode->i_sb->s_blocksize_bits; | |
85d71244 JK |
543 | /* |
544 | * Move prev_epos and cur_epos into indirect extent if we are at | |
545 | * the pointer to it | |
546 | */ | |
547 | udf_next_aext(inode, &prev_epos, &tmpeloc, &tmpelen, 0); | |
548 | udf_next_aext(inode, &cur_epos, &tmpeloc, &tmpelen, 0); | |
1da177e4 LT |
549 | |
550 | /* if the extent is allocated and recorded, return the block | |
cb00ea35 | 551 | if the extent is not a multiple of the blocksize, round up */ |
1da177e4 | 552 | |
cb00ea35 CG |
553 | if (etype == (EXT_RECORDED_ALLOCATED >> 30)) { |
554 | if (elen & (inode->i_sb->s_blocksize - 1)) { | |
1da177e4 | 555 | elen = EXT_RECORDED_ALLOCATED | |
28de7948 CG |
556 | ((elen + inode->i_sb->s_blocksize - 1) & |
557 | ~(inode->i_sb->s_blocksize - 1)); | |
ff116fc8 | 558 | etype = udf_write_aext(inode, &cur_epos, eloc, elen, 1); |
1da177e4 | 559 | } |
3bf25cb4 JK |
560 | brelse(prev_epos.bh); |
561 | brelse(cur_epos.bh); | |
562 | brelse(next_epos.bh); | |
1da177e4 LT |
563 | newblock = udf_get_lb_pblock(inode->i_sb, eloc, offset); |
564 | *phys = newblock; | |
565 | return NULL; | |
566 | } | |
567 | ||
31170b6a JK |
568 | last_block = block; |
569 | /* Are we beyond EOF? */ | |
cb00ea35 | 570 | if (etype == -1) { |
31170b6a JK |
571 | int ret; |
572 | ||
573 | if (count) { | |
574 | if (c) | |
575 | laarr[0] = laarr[1]; | |
576 | startnum = 1; | |
cb00ea35 | 577 | } else { |
31170b6a | 578 | /* Create a fake extent when there's not one */ |
4b11111a MS |
579 | memset(&laarr[0].extLocation, 0x00, |
580 | sizeof(kernel_lb_addr)); | |
31170b6a | 581 | laarr[0].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED; |
4b11111a MS |
582 | /* Will udf_extend_file() create real extent from |
583 | a fake one? */ | |
31170b6a JK |
584 | startnum = (offset > 0); |
585 | } | |
586 | /* Create extents for the hole between EOF and offset */ | |
587 | ret = udf_extend_file(inode, &prev_epos, laarr, offset); | |
588 | if (ret == -1) { | |
589 | brelse(prev_epos.bh); | |
590 | brelse(cur_epos.bh); | |
591 | brelse(next_epos.bh); | |
592 | /* We don't really know the error here so we just make | |
593 | * something up */ | |
594 | *err = -ENOSPC; | |
595 | return NULL; | |
596 | } | |
597 | c = 0; | |
598 | offset = 0; | |
599 | count += ret; | |
600 | /* We are not covered by a preallocated extent? */ | |
4b11111a MS |
601 | if ((laarr[0].extLength & UDF_EXTENT_FLAG_MASK) != |
602 | EXT_NOT_RECORDED_ALLOCATED) { | |
31170b6a JK |
603 | /* Is there any real extent? - otherwise we overwrite |
604 | * the fake one... */ | |
605 | if (count) | |
606 | c = !c; | |
607 | laarr[c].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED | | |
28de7948 | 608 | inode->i_sb->s_blocksize; |
4b11111a MS |
609 | memset(&laarr[c].extLocation, 0x00, |
610 | sizeof(kernel_lb_addr)); | |
cb00ea35 CG |
611 | count++; |
612 | endnum++; | |
31170b6a | 613 | } |
cb00ea35 | 614 | endnum = c + 1; |
1da177e4 | 615 | lastblock = 1; |
cb00ea35 | 616 | } else { |
1da177e4 LT |
617 | endnum = startnum = ((count > 2) ? 2 : count); |
618 | ||
4b11111a MS |
619 | /* if the current extent is in position 0, |
620 | swap it with the previous */ | |
cb00ea35 | 621 | if (!c && count != 1) { |
31170b6a JK |
622 | laarr[2] = laarr[0]; |
623 | laarr[0] = laarr[1]; | |
624 | laarr[1] = laarr[2]; | |
625 | c = 1; | |
626 | } | |
1da177e4 | 627 | |
4b11111a MS |
628 | /* if the current block is located in an extent, |
629 | read the next extent */ | |
630 | etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 0); | |
631 | if (etype != -1) { | |
cb00ea35 CG |
632 | laarr[c + 1].extLength = (etype << 30) | elen; |
633 | laarr[c + 1].extLocation = eloc; | |
634 | count++; | |
635 | startnum++; | |
636 | endnum++; | |
4b11111a | 637 | } else |
1da177e4 LT |
638 | lastblock = 1; |
639 | } | |
1da177e4 LT |
640 | |
641 | /* if the current extent is not recorded but allocated, get the | |
28de7948 | 642 | * block in the extent corresponding to the requested block */ |
4b11111a | 643 | if ((laarr[c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30)) |
1da177e4 | 644 | newblocknum = laarr[c].extLocation.logicalBlockNum + offset; |
4b11111a | 645 | else { /* otherwise, allocate a new block */ |
48d6d8ff MS |
646 | if (iinfo->i_next_alloc_block == block) |
647 | goal = iinfo->i_next_alloc_goal; | |
1da177e4 | 648 | |
cb00ea35 | 649 | if (!goal) { |
4b11111a | 650 | if (!(goal = pgoal)) /* XXX: what was intended here? */ |
48d6d8ff | 651 | goal = iinfo->i_location.logicalBlockNum + 1; |
1da177e4 LT |
652 | } |
653 | ||
4b11111a | 654 | newblocknum = udf_new_block(inode->i_sb, inode, |
48d6d8ff | 655 | iinfo->i_location.partitionReferenceNum, |
4b11111a MS |
656 | goal, err); |
657 | if (!newblocknum) { | |
3bf25cb4 | 658 | brelse(prev_epos.bh); |
1da177e4 LT |
659 | *err = -ENOSPC; |
660 | return NULL; | |
661 | } | |
48d6d8ff | 662 | iinfo->i_lenExtents += inode->i_sb->s_blocksize; |
1da177e4 LT |
663 | } |
664 | ||
4b11111a MS |
665 | /* if the extent the requsted block is located in contains multiple |
666 | * blocks, split the extent into at most three extents. blocks prior | |
667 | * to requested block, requested block, and blocks after requested | |
668 | * block */ | |
1da177e4 LT |
669 | udf_split_extents(inode, &c, offset, newblocknum, laarr, &endnum); |
670 | ||
671 | #ifdef UDF_PREALLOCATE | |
672 | /* preallocate blocks */ | |
673 | udf_prealloc_extents(inode, c, lastblock, laarr, &endnum); | |
674 | #endif | |
675 | ||
676 | /* merge any continuous blocks in laarr */ | |
677 | udf_merge_extents(inode, laarr, &endnum); | |
678 | ||
679 | /* write back the new extents, inserting new extents if the new number | |
28de7948 CG |
680 | * of extents is greater than the old number, and deleting extents if |
681 | * the new number of extents is less than the old number */ | |
ff116fc8 | 682 | udf_update_extents(inode, laarr, startnum, endnum, &prev_epos); |
1da177e4 | 683 | |
3bf25cb4 | 684 | brelse(prev_epos.bh); |
1da177e4 | 685 | |
4b11111a | 686 | newblock = udf_get_pblock(inode->i_sb, newblocknum, |
48d6d8ff | 687 | iinfo->i_location.partitionReferenceNum, 0); |
4b11111a | 688 | if (!newblock) |
1da177e4 | 689 | return NULL; |
1da177e4 LT |
690 | *phys = newblock; |
691 | *err = 0; | |
692 | *new = 1; | |
48d6d8ff MS |
693 | iinfo->i_next_alloc_block = block; |
694 | iinfo->i_next_alloc_goal = newblocknum; | |
1da177e4 LT |
695 | inode->i_ctime = current_fs_time(inode->i_sb); |
696 | ||
697 | if (IS_SYNC(inode)) | |
698 | udf_sync_inode(inode); | |
699 | else | |
700 | mark_inode_dirty(inode); | |
28de7948 | 701 | |
1da177e4 LT |
702 | return result; |
703 | } | |
704 | ||
cb00ea35 CG |
705 | static void udf_split_extents(struct inode *inode, int *c, int offset, |
706 | int newblocknum, | |
707 | kernel_long_ad laarr[EXTENT_MERGE_SIZE], | |
708 | int *endnum) | |
1da177e4 | 709 | { |
4b11111a MS |
710 | unsigned long blocksize = inode->i_sb->s_blocksize; |
711 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; | |
712 | ||
1da177e4 | 713 | if ((laarr[*c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30) || |
4b11111a MS |
714 | (laarr[*c].extLength >> 30) == |
715 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) { | |
1da177e4 LT |
716 | int curr = *c; |
717 | int blen = ((laarr[curr].extLength & UDF_EXTENT_LENGTH_MASK) + | |
4b11111a | 718 | blocksize - 1) >> blocksize_bits; |
1da177e4 LT |
719 | int8_t etype = (laarr[curr].extLength >> 30); |
720 | ||
4b11111a | 721 | if (blen == 1) |
28de7948 | 722 | ; |
4b11111a | 723 | else if (!offset || blen == offset + 1) { |
cb00ea35 CG |
724 | laarr[curr + 2] = laarr[curr + 1]; |
725 | laarr[curr + 1] = laarr[curr]; | |
726 | } else { | |
727 | laarr[curr + 3] = laarr[curr + 1]; | |
728 | laarr[curr + 2] = laarr[curr + 1] = laarr[curr]; | |
729 | } | |
730 | ||
731 | if (offset) { | |
732 | if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) { | |
4b11111a MS |
733 | udf_free_blocks(inode->i_sb, inode, |
734 | laarr[curr].extLocation, | |
735 | 0, offset); | |
736 | laarr[curr].extLength = | |
737 | EXT_NOT_RECORDED_NOT_ALLOCATED | | |
738 | (offset << blocksize_bits); | |
1da177e4 | 739 | laarr[curr].extLocation.logicalBlockNum = 0; |
4b11111a MS |
740 | laarr[curr].extLocation. |
741 | partitionReferenceNum = 0; | |
742 | } else | |
1da177e4 | 743 | laarr[curr].extLength = (etype << 30) | |
4b11111a | 744 | (offset << blocksize_bits); |
cb00ea35 CG |
745 | curr++; |
746 | (*c)++; | |
747 | (*endnum)++; | |
1da177e4 | 748 | } |
647bd61a | 749 | |
1da177e4 LT |
750 | laarr[curr].extLocation.logicalBlockNum = newblocknum; |
751 | if (etype == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) | |
752 | laarr[curr].extLocation.partitionReferenceNum = | |
c0b34438 | 753 | UDF_I(inode)->i_location.partitionReferenceNum; |
1da177e4 | 754 | laarr[curr].extLength = EXT_RECORDED_ALLOCATED | |
4b11111a | 755 | blocksize; |
cb00ea35 | 756 | curr++; |
1da177e4 | 757 | |
cb00ea35 | 758 | if (blen != offset + 1) { |
1da177e4 | 759 | if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) |
4b11111a MS |
760 | laarr[curr].extLocation.logicalBlockNum += |
761 | offset + 1; | |
28de7948 | 762 | laarr[curr].extLength = (etype << 30) | |
4b11111a | 763 | ((blen - (offset + 1)) << blocksize_bits); |
cb00ea35 CG |
764 | curr++; |
765 | (*endnum)++; | |
1da177e4 LT |
766 | } |
767 | } | |
768 | } | |
769 | ||
770 | static void udf_prealloc_extents(struct inode *inode, int c, int lastblock, | |
cb00ea35 CG |
771 | kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
772 | int *endnum) | |
1da177e4 LT |
773 | { |
774 | int start, length = 0, currlength = 0, i; | |
775 | ||
cb00ea35 | 776 | if (*endnum >= (c + 1)) { |
1da177e4 LT |
777 | if (!lastblock) |
778 | return; | |
779 | else | |
780 | start = c; | |
cb00ea35 | 781 | } else { |
4b11111a MS |
782 | if ((laarr[c + 1].extLength >> 30) == |
783 | (EXT_NOT_RECORDED_ALLOCATED >> 30)) { | |
cb00ea35 | 784 | start = c + 1; |
4b11111a MS |
785 | length = currlength = |
786 | (((laarr[c + 1].extLength & | |
787 | UDF_EXTENT_LENGTH_MASK) + | |
788 | inode->i_sb->s_blocksize - 1) >> | |
789 | inode->i_sb->s_blocksize_bits); | |
790 | } else | |
1da177e4 LT |
791 | start = c; |
792 | } | |
793 | ||
cb00ea35 CG |
794 | for (i = start + 1; i <= *endnum; i++) { |
795 | if (i == *endnum) { | |
1da177e4 LT |
796 | if (lastblock) |
797 | length += UDF_DEFAULT_PREALLOC_BLOCKS; | |
4b11111a MS |
798 | } else if ((laarr[i].extLength >> 30) == |
799 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) { | |
800 | length += (((laarr[i].extLength & | |
801 | UDF_EXTENT_LENGTH_MASK) + | |
802 | inode->i_sb->s_blocksize - 1) >> | |
803 | inode->i_sb->s_blocksize_bits); | |
804 | } else | |
1da177e4 LT |
805 | break; |
806 | } | |
807 | ||
cb00ea35 | 808 | if (length) { |
1da177e4 | 809 | int next = laarr[start].extLocation.logicalBlockNum + |
28de7948 | 810 | (((laarr[start].extLength & UDF_EXTENT_LENGTH_MASK) + |
4b11111a MS |
811 | inode->i_sb->s_blocksize - 1) >> |
812 | inode->i_sb->s_blocksize_bits); | |
1da177e4 | 813 | int numalloc = udf_prealloc_blocks(inode->i_sb, inode, |
4b11111a MS |
814 | laarr[start].extLocation.partitionReferenceNum, |
815 | next, (UDF_DEFAULT_PREALLOC_BLOCKS > length ? | |
816 | length : UDF_DEFAULT_PREALLOC_BLOCKS) - | |
817 | currlength); | |
28de7948 | 818 | if (numalloc) { |
4b11111a | 819 | if (start == (c + 1)) |
1da177e4 | 820 | laarr[start].extLength += |
4b11111a MS |
821 | (numalloc << |
822 | inode->i_sb->s_blocksize_bits); | |
823 | else { | |
cb00ea35 CG |
824 | memmove(&laarr[c + 2], &laarr[c + 1], |
825 | sizeof(long_ad) * (*endnum - (c + 1))); | |
826 | (*endnum)++; | |
827 | laarr[c + 1].extLocation.logicalBlockNum = next; | |
828 | laarr[c + 1].extLocation.partitionReferenceNum = | |
4b11111a MS |
829 | laarr[c].extLocation. |
830 | partitionReferenceNum; | |
831 | laarr[c + 1].extLength = | |
832 | EXT_NOT_RECORDED_ALLOCATED | | |
833 | (numalloc << | |
834 | inode->i_sb->s_blocksize_bits); | |
cb00ea35 | 835 | start = c + 1; |
1da177e4 LT |
836 | } |
837 | ||
cb00ea35 | 838 | for (i = start + 1; numalloc && i < *endnum; i++) { |
4b11111a MS |
839 | int elen = ((laarr[i].extLength & |
840 | UDF_EXTENT_LENGTH_MASK) + | |
841 | inode->i_sb->s_blocksize - 1) >> | |
842 | inode->i_sb->s_blocksize_bits; | |
1da177e4 | 843 | |
cb00ea35 | 844 | if (elen > numalloc) { |
1da177e4 | 845 | laarr[i].extLength -= |
4b11111a MS |
846 | (numalloc << |
847 | inode->i_sb->s_blocksize_bits); | |
1da177e4 | 848 | numalloc = 0; |
cb00ea35 | 849 | } else { |
1da177e4 | 850 | numalloc -= elen; |
cb00ea35 | 851 | if (*endnum > (i + 1)) |
4b11111a MS |
852 | memmove(&laarr[i], |
853 | &laarr[i + 1], | |
854 | sizeof(long_ad) * | |
855 | (*endnum - (i + 1))); | |
cb00ea35 CG |
856 | i--; |
857 | (*endnum)--; | |
1da177e4 LT |
858 | } |
859 | } | |
c0b34438 | 860 | UDF_I(inode)->i_lenExtents += |
4b11111a | 861 | numalloc << inode->i_sb->s_blocksize_bits; |
1da177e4 LT |
862 | } |
863 | } | |
864 | } | |
865 | ||
866 | static void udf_merge_extents(struct inode *inode, | |
cb00ea35 CG |
867 | kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
868 | int *endnum) | |
1da177e4 LT |
869 | { |
870 | int i; | |
4b11111a MS |
871 | unsigned long blocksize = inode->i_sb->s_blocksize; |
872 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; | |
1da177e4 | 873 | |
cb00ea35 | 874 | for (i = 0; i < (*endnum - 1); i++) { |
4b11111a MS |
875 | kernel_long_ad *li /*l[i]*/ = &laarr[i]; |
876 | kernel_long_ad *lip1 /*l[i plus 1]*/ = &laarr[i + 1]; | |
877 | ||
878 | if (((li->extLength >> 30) == (lip1->extLength >> 30)) && | |
879 | (((li->extLength >> 30) == | |
880 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) || | |
881 | ((lip1->extLocation.logicalBlockNum - | |
882 | li->extLocation.logicalBlockNum) == | |
883 | (((li->extLength & UDF_EXTENT_LENGTH_MASK) + | |
884 | blocksize - 1) >> blocksize_bits)))) { | |
885 | ||
886 | if (((li->extLength & UDF_EXTENT_LENGTH_MASK) + | |
887 | (lip1->extLength & UDF_EXTENT_LENGTH_MASK) + | |
888 | blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK) { | |
889 | lip1->extLength = (lip1->extLength - | |
890 | (li->extLength & | |
891 | UDF_EXTENT_LENGTH_MASK) + | |
892 | UDF_EXTENT_LENGTH_MASK) & | |
893 | ~(blocksize - 1); | |
894 | li->extLength = (li->extLength & | |
895 | UDF_EXTENT_FLAG_MASK) + | |
896 | (UDF_EXTENT_LENGTH_MASK + 1) - | |
897 | blocksize; | |
898 | lip1->extLocation.logicalBlockNum = | |
899 | li->extLocation.logicalBlockNum + | |
900 | ((li->extLength & | |
901 | UDF_EXTENT_LENGTH_MASK) >> | |
902 | blocksize_bits); | |
903 | } else { | |
904 | li->extLength = lip1->extLength + | |
905 | (((li->extLength & | |
906 | UDF_EXTENT_LENGTH_MASK) + | |
907 | blocksize - 1) & ~(blocksize - 1)); | |
908 | if (*endnum > (i + 2)) | |
909 | memmove(&laarr[i + 1], &laarr[i + 2], | |
910 | sizeof(long_ad) * | |
911 | (*endnum - (i + 2))); | |
912 | i--; | |
913 | (*endnum)--; | |
1da177e4 | 914 | } |
4b11111a MS |
915 | } else if (((li->extLength >> 30) == |
916 | (EXT_NOT_RECORDED_ALLOCATED >> 30)) && | |
917 | ((lip1->extLength >> 30) == | |
918 | (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))) { | |
919 | udf_free_blocks(inode->i_sb, inode, li->extLocation, 0, | |
920 | ((li->extLength & | |
921 | UDF_EXTENT_LENGTH_MASK) + | |
922 | blocksize - 1) >> blocksize_bits); | |
923 | li->extLocation.logicalBlockNum = 0; | |
924 | li->extLocation.partitionReferenceNum = 0; | |
925 | ||
926 | if (((li->extLength & UDF_EXTENT_LENGTH_MASK) + | |
927 | (lip1->extLength & UDF_EXTENT_LENGTH_MASK) + | |
928 | blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK) { | |
929 | lip1->extLength = (lip1->extLength - | |
930 | (li->extLength & | |
931 | UDF_EXTENT_LENGTH_MASK) + | |
932 | UDF_EXTENT_LENGTH_MASK) & | |
933 | ~(blocksize - 1); | |
934 | li->extLength = (li->extLength & | |
935 | UDF_EXTENT_FLAG_MASK) + | |
936 | (UDF_EXTENT_LENGTH_MASK + 1) - | |
937 | blocksize; | |
cb00ea35 | 938 | } else { |
4b11111a MS |
939 | li->extLength = lip1->extLength + |
940 | (((li->extLength & | |
941 | UDF_EXTENT_LENGTH_MASK) + | |
942 | blocksize - 1) & ~(blocksize - 1)); | |
cb00ea35 CG |
943 | if (*endnum > (i + 2)) |
944 | memmove(&laarr[i + 1], &laarr[i + 2], | |
4b11111a MS |
945 | sizeof(long_ad) * |
946 | (*endnum - (i + 2))); | |
cb00ea35 CG |
947 | i--; |
948 | (*endnum)--; | |
1da177e4 | 949 | } |
4b11111a MS |
950 | } else if ((li->extLength >> 30) == |
951 | (EXT_NOT_RECORDED_ALLOCATED >> 30)) { | |
952 | udf_free_blocks(inode->i_sb, inode, | |
953 | li->extLocation, 0, | |
954 | ((li->extLength & | |
955 | UDF_EXTENT_LENGTH_MASK) + | |
956 | blocksize - 1) >> blocksize_bits); | |
957 | li->extLocation.logicalBlockNum = 0; | |
958 | li->extLocation.partitionReferenceNum = 0; | |
959 | li->extLength = (li->extLength & | |
960 | UDF_EXTENT_LENGTH_MASK) | | |
961 | EXT_NOT_RECORDED_NOT_ALLOCATED; | |
1da177e4 LT |
962 | } |
963 | } | |
964 | } | |
965 | ||
966 | static void udf_update_extents(struct inode *inode, | |
cb00ea35 CG |
967 | kernel_long_ad laarr[EXTENT_MERGE_SIZE], |
968 | int startnum, int endnum, | |
969 | struct extent_position *epos) | |
1da177e4 LT |
970 | { |
971 | int start = 0, i; | |
972 | kernel_lb_addr tmploc; | |
973 | uint32_t tmplen; | |
974 | ||
cb00ea35 CG |
975 | if (startnum > endnum) { |
976 | for (i = 0; i < (startnum - endnum); i++) | |
ff116fc8 | 977 | udf_delete_aext(inode, *epos, laarr[i].extLocation, |
cb00ea35 CG |
978 | laarr[i].extLength); |
979 | } else if (startnum < endnum) { | |
980 | for (i = 0; i < (endnum - startnum); i++) { | |
ff116fc8 | 981 | udf_insert_aext(inode, *epos, laarr[i].extLocation, |
cb00ea35 | 982 | laarr[i].extLength); |
ff116fc8 | 983 | udf_next_aext(inode, epos, &laarr[i].extLocation, |
cb00ea35 CG |
984 | &laarr[i].extLength, 1); |
985 | start++; | |
1da177e4 LT |
986 | } |
987 | } | |
988 | ||
cb00ea35 | 989 | for (i = start; i < endnum; i++) { |
ff116fc8 JK |
990 | udf_next_aext(inode, epos, &tmploc, &tmplen, 0); |
991 | udf_write_aext(inode, epos, laarr[i].extLocation, | |
cb00ea35 | 992 | laarr[i].extLength, 1); |
1da177e4 LT |
993 | } |
994 | } | |
995 | ||
cb00ea35 CG |
996 | struct buffer_head *udf_bread(struct inode *inode, int block, |
997 | int create, int *err) | |
1da177e4 | 998 | { |
cb00ea35 | 999 | struct buffer_head *bh = NULL; |
1da177e4 LT |
1000 | |
1001 | bh = udf_getblk(inode, block, create, err); | |
1002 | if (!bh) | |
1003 | return NULL; | |
1004 | ||
1005 | if (buffer_uptodate(bh)) | |
1006 | return bh; | |
28de7948 | 1007 | |
1da177e4 | 1008 | ll_rw_block(READ, 1, &bh); |
28de7948 | 1009 | |
1da177e4 LT |
1010 | wait_on_buffer(bh); |
1011 | if (buffer_uptodate(bh)) | |
1012 | return bh; | |
28de7948 | 1013 | |
1da177e4 LT |
1014 | brelse(bh); |
1015 | *err = -EIO; | |
1016 | return NULL; | |
1017 | } | |
1018 | ||
cb00ea35 | 1019 | void udf_truncate(struct inode *inode) |
1da177e4 LT |
1020 | { |
1021 | int offset; | |
1022 | int err; | |
48d6d8ff | 1023 | struct udf_inode_info *iinfo; |
1da177e4 LT |
1024 | |
1025 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
cb00ea35 | 1026 | S_ISLNK(inode->i_mode))) |
1da177e4 LT |
1027 | return; |
1028 | if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) | |
1029 | return; | |
1030 | ||
1031 | lock_kernel(); | |
48d6d8ff MS |
1032 | iinfo = UDF_I(inode); |
1033 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { | |
4b11111a MS |
1034 | if (inode->i_sb->s_blocksize < |
1035 | (udf_file_entry_alloc_offset(inode) + | |
1036 | inode->i_size)) { | |
1da177e4 | 1037 | udf_expand_file_adinicb(inode, inode->i_size, &err); |
48d6d8ff MS |
1038 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { |
1039 | inode->i_size = iinfo->i_lenAlloc; | |
1da177e4 LT |
1040 | unlock_kernel(); |
1041 | return; | |
4b11111a | 1042 | } else |
1da177e4 | 1043 | udf_truncate_extents(inode); |
cb00ea35 | 1044 | } else { |
1da177e4 | 1045 | offset = inode->i_size & (inode->i_sb->s_blocksize - 1); |
48d6d8ff | 1046 | memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset, |
c0b34438 | 1047 | 0x00, inode->i_sb->s_blocksize - |
4b11111a | 1048 | offset - udf_file_entry_alloc_offset(inode)); |
48d6d8ff | 1049 | iinfo->i_lenAlloc = inode->i_size; |
1da177e4 | 1050 | } |
cb00ea35 | 1051 | } else { |
4b11111a MS |
1052 | block_truncate_page(inode->i_mapping, inode->i_size, |
1053 | udf_get_block); | |
1da177e4 | 1054 | udf_truncate_extents(inode); |
647bd61a | 1055 | } |
1da177e4 LT |
1056 | |
1057 | inode->i_mtime = inode->i_ctime = current_fs_time(inode->i_sb); | |
1058 | if (IS_SYNC(inode)) | |
cb00ea35 | 1059 | udf_sync_inode(inode); |
1da177e4 LT |
1060 | else |
1061 | mark_inode_dirty(inode); | |
1062 | unlock_kernel(); | |
1063 | } | |
1064 | ||
cb00ea35 | 1065 | static void __udf_read_inode(struct inode *inode) |
1da177e4 LT |
1066 | { |
1067 | struct buffer_head *bh = NULL; | |
1068 | struct fileEntry *fe; | |
1069 | uint16_t ident; | |
48d6d8ff | 1070 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
1071 | |
1072 | /* | |
1073 | * Set defaults, but the inode is still incomplete! | |
1074 | * Note: get_new_inode() sets the following on a new inode: | |
1075 | * i_sb = sb | |
1076 | * i_no = ino | |
1077 | * i_flags = sb->s_flags | |
1078 | * i_state = 0 | |
1079 | * clean_inode(): zero fills and sets | |
1080 | * i_count = 1 | |
1081 | * i_nlink = 1 | |
1082 | * i_op = NULL; | |
1083 | */ | |
48d6d8ff | 1084 | bh = udf_read_ptagged(inode->i_sb, iinfo->i_location, 0, &ident); |
cb00ea35 | 1085 | if (!bh) { |
1da177e4 | 1086 | printk(KERN_ERR "udf: udf_read_inode(ino %ld) failed !bh\n", |
cb00ea35 | 1087 | inode->i_ino); |
1da177e4 LT |
1088 | make_bad_inode(inode); |
1089 | return; | |
1090 | } | |
1091 | ||
1092 | if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE && | |
cb00ea35 | 1093 | ident != TAG_IDENT_USE) { |
4b11111a MS |
1094 | printk(KERN_ERR "udf: udf_read_inode(ino %ld) " |
1095 | "failed ident=%d\n", inode->i_ino, ident); | |
3bf25cb4 | 1096 | brelse(bh); |
1da177e4 LT |
1097 | make_bad_inode(inode); |
1098 | return; | |
1099 | } | |
1100 | ||
1101 | fe = (struct fileEntry *)bh->b_data; | |
1102 | ||
5e0f0017 | 1103 | if (fe->icbTag.strategyType == cpu_to_le16(4096)) { |
1ab92785 | 1104 | struct buffer_head *ibh; |
1da177e4 | 1105 | |
48d6d8ff | 1106 | ibh = udf_read_ptagged(inode->i_sb, iinfo->i_location, 1, |
4b11111a | 1107 | &ident); |
1ab92785 | 1108 | if (ident == TAG_IDENT_IE && ibh) { |
1109 | struct buffer_head *nbh = NULL; | |
1110 | kernel_lb_addr loc; | |
1111 | struct indirectEntry *ie; | |
1112 | ||
1113 | ie = (struct indirectEntry *)ibh->b_data; | |
1114 | loc = lelb_to_cpu(ie->indirectICB.extLocation); | |
1115 | ||
1116 | if (ie->indirectICB.extLength && | |
1117 | (nbh = udf_read_ptagged(inode->i_sb, loc, 0, | |
1118 | &ident))) { | |
1119 | if (ident == TAG_IDENT_FE || | |
1120 | ident == TAG_IDENT_EFE) { | |
1121 | memcpy(&iinfo->i_location, | |
1122 | &loc, | |
1123 | sizeof(kernel_lb_addr)); | |
1124 | brelse(bh); | |
3bf25cb4 | 1125 | brelse(ibh); |
1ab92785 | 1126 | brelse(nbh); |
1127 | __udf_read_inode(inode); | |
1128 | return; | |
28de7948 | 1129 | } |
1ab92785 | 1130 | brelse(nbh); |
1da177e4 | 1131 | } |
28de7948 | 1132 | } |
1ab92785 | 1133 | brelse(ibh); |
5e0f0017 | 1134 | } else if (fe->icbTag.strategyType != cpu_to_le16(4)) { |
1da177e4 | 1135 | printk(KERN_ERR "udf: unsupported strategy type: %d\n", |
cb00ea35 | 1136 | le16_to_cpu(fe->icbTag.strategyType)); |
3bf25cb4 | 1137 | brelse(bh); |
1da177e4 LT |
1138 | make_bad_inode(inode); |
1139 | return; | |
1140 | } | |
1141 | udf_fill_inode(inode, bh); | |
31170b6a | 1142 | |
3bf25cb4 | 1143 | brelse(bh); |
1da177e4 LT |
1144 | } |
1145 | ||
1146 | static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) | |
1147 | { | |
1148 | struct fileEntry *fe; | |
1149 | struct extendedFileEntry *efe; | |
1150 | time_t convtime; | |
1151 | long convtime_usec; | |
1152 | int offset; | |
6c79e987 | 1153 | struct udf_sb_info *sbi = UDF_SB(inode->i_sb); |
48d6d8ff | 1154 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 LT |
1155 | |
1156 | fe = (struct fileEntry *)bh->b_data; | |
1157 | efe = (struct extendedFileEntry *)bh->b_data; | |
1158 | ||
5e0f0017 | 1159 | if (fe->icbTag.strategyType == cpu_to_le16(4)) |
48d6d8ff | 1160 | iinfo->i_strat4096 = 0; |
5e0f0017 | 1161 | else /* if (fe->icbTag.strategyType == cpu_to_le16(4096)) */ |
48d6d8ff | 1162 | iinfo->i_strat4096 = 1; |
1da177e4 | 1163 | |
48d6d8ff | 1164 | iinfo->i_alloc_type = le16_to_cpu(fe->icbTag.flags) & |
4b11111a | 1165 | ICBTAG_FLAG_AD_MASK; |
48d6d8ff MS |
1166 | iinfo->i_unique = 0; |
1167 | iinfo->i_lenEAttr = 0; | |
1168 | iinfo->i_lenExtents = 0; | |
1169 | iinfo->i_lenAlloc = 0; | |
1170 | iinfo->i_next_alloc_block = 0; | |
1171 | iinfo->i_next_alloc_goal = 0; | |
5e0f0017 | 1172 | if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) { |
48d6d8ff MS |
1173 | iinfo->i_efe = 1; |
1174 | iinfo->i_use = 0; | |
4b11111a MS |
1175 | if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - |
1176 | sizeof(struct extendedFileEntry))) { | |
647bd61a CG |
1177 | make_bad_inode(inode); |
1178 | return; | |
1179 | } | |
48d6d8ff | 1180 | memcpy(iinfo->i_ext.i_data, |
4b11111a MS |
1181 | bh->b_data + sizeof(struct extendedFileEntry), |
1182 | inode->i_sb->s_blocksize - | |
1183 | sizeof(struct extendedFileEntry)); | |
5e0f0017 | 1184 | } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) { |
48d6d8ff MS |
1185 | iinfo->i_efe = 0; |
1186 | iinfo->i_use = 0; | |
4b11111a MS |
1187 | if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - |
1188 | sizeof(struct fileEntry))) { | |
647bd61a CG |
1189 | make_bad_inode(inode); |
1190 | return; | |
1191 | } | |
48d6d8ff | 1192 | memcpy(iinfo->i_ext.i_data, |
c0b34438 | 1193 | bh->b_data + sizeof(struct fileEntry), |
cb00ea35 | 1194 | inode->i_sb->s_blocksize - sizeof(struct fileEntry)); |
5e0f0017 | 1195 | } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) { |
48d6d8ff MS |
1196 | iinfo->i_efe = 0; |
1197 | iinfo->i_use = 1; | |
1198 | iinfo->i_lenAlloc = le32_to_cpu( | |
4b11111a MS |
1199 | ((struct unallocSpaceEntry *)bh->b_data)-> |
1200 | lengthAllocDescs); | |
1201 | if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - | |
1202 | sizeof(struct unallocSpaceEntry))) { | |
647bd61a CG |
1203 | make_bad_inode(inode); |
1204 | return; | |
1205 | } | |
48d6d8ff | 1206 | memcpy(iinfo->i_ext.i_data, |
4b11111a MS |
1207 | bh->b_data + sizeof(struct unallocSpaceEntry), |
1208 | inode->i_sb->s_blocksize - | |
1209 | sizeof(struct unallocSpaceEntry)); | |
1da177e4 LT |
1210 | return; |
1211 | } | |
1212 | ||
1213 | inode->i_uid = le32_to_cpu(fe->uid); | |
ca76d2d8 CG |
1214 | if (inode->i_uid == -1 || |
1215 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_IGNORE) || | |
1216 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_SET)) | |
4d6660eb | 1217 | inode->i_uid = UDF_SB(inode->i_sb)->s_uid; |
1da177e4 LT |
1218 | |
1219 | inode->i_gid = le32_to_cpu(fe->gid); | |
ca76d2d8 CG |
1220 | if (inode->i_gid == -1 || |
1221 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_IGNORE) || | |
1222 | UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET)) | |
4d6660eb | 1223 | inode->i_gid = UDF_SB(inode->i_sb)->s_gid; |
1da177e4 LT |
1224 | |
1225 | inode->i_nlink = le16_to_cpu(fe->fileLinkCount); | |
1226 | if (!inode->i_nlink) | |
1227 | inode->i_nlink = 1; | |
647bd61a | 1228 | |
1da177e4 | 1229 | inode->i_size = le64_to_cpu(fe->informationLength); |
48d6d8ff | 1230 | iinfo->i_lenExtents = inode->i_size; |
1da177e4 LT |
1231 | |
1232 | inode->i_mode = udf_convert_permissions(fe); | |
1233 | inode->i_mode &= ~UDF_SB(inode->i_sb)->s_umask; | |
1234 | ||
48d6d8ff | 1235 | if (iinfo->i_efe == 0) { |
1da177e4 | 1236 | inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) << |
28de7948 | 1237 | (inode->i_sb->s_blocksize_bits - 9); |
1da177e4 | 1238 | |
cb00ea35 CG |
1239 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1240 | lets_to_cpu(fe->accessTime))) { | |
1da177e4 LT |
1241 | inode->i_atime.tv_sec = convtime; |
1242 | inode->i_atime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1243 | } else { |
6c79e987 | 1244 | inode->i_atime = sbi->s_record_time; |
1da177e4 LT |
1245 | } |
1246 | ||
cb00ea35 CG |
1247 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1248 | lets_to_cpu(fe->modificationTime))) { | |
1da177e4 LT |
1249 | inode->i_mtime.tv_sec = convtime; |
1250 | inode->i_mtime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1251 | } else { |
6c79e987 | 1252 | inode->i_mtime = sbi->s_record_time; |
1da177e4 LT |
1253 | } |
1254 | ||
cb00ea35 CG |
1255 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1256 | lets_to_cpu(fe->attrTime))) { | |
1da177e4 LT |
1257 | inode->i_ctime.tv_sec = convtime; |
1258 | inode->i_ctime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1259 | } else { |
6c79e987 | 1260 | inode->i_ctime = sbi->s_record_time; |
1da177e4 LT |
1261 | } |
1262 | ||
48d6d8ff MS |
1263 | iinfo->i_unique = le64_to_cpu(fe->uniqueID); |
1264 | iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr); | |
1265 | iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs); | |
1266 | offset = sizeof(struct fileEntry) + iinfo->i_lenEAttr; | |
cb00ea35 | 1267 | } else { |
647bd61a | 1268 | inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) << |
cb00ea35 | 1269 | (inode->i_sb->s_blocksize_bits - 9); |
1da177e4 | 1270 | |
cb00ea35 CG |
1271 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1272 | lets_to_cpu(efe->accessTime))) { | |
1da177e4 LT |
1273 | inode->i_atime.tv_sec = convtime; |
1274 | inode->i_atime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1275 | } else { |
6c79e987 | 1276 | inode->i_atime = sbi->s_record_time; |
1da177e4 LT |
1277 | } |
1278 | ||
cb00ea35 CG |
1279 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1280 | lets_to_cpu(efe->modificationTime))) { | |
1da177e4 LT |
1281 | inode->i_mtime.tv_sec = convtime; |
1282 | inode->i_mtime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1283 | } else { |
6c79e987 | 1284 | inode->i_mtime = sbi->s_record_time; |
1da177e4 LT |
1285 | } |
1286 | ||
cb00ea35 CG |
1287 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1288 | lets_to_cpu(efe->createTime))) { | |
48d6d8ff MS |
1289 | iinfo->i_crtime.tv_sec = convtime; |
1290 | iinfo->i_crtime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1291 | } else { |
48d6d8ff | 1292 | iinfo->i_crtime = sbi->s_record_time; |
1da177e4 LT |
1293 | } |
1294 | ||
cb00ea35 CG |
1295 | if (udf_stamp_to_time(&convtime, &convtime_usec, |
1296 | lets_to_cpu(efe->attrTime))) { | |
1da177e4 LT |
1297 | inode->i_ctime.tv_sec = convtime; |
1298 | inode->i_ctime.tv_nsec = convtime_usec * 1000; | |
cb00ea35 | 1299 | } else { |
6c79e987 | 1300 | inode->i_ctime = sbi->s_record_time; |
1da177e4 LT |
1301 | } |
1302 | ||
48d6d8ff MS |
1303 | iinfo->i_unique = le64_to_cpu(efe->uniqueID); |
1304 | iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr); | |
1305 | iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs); | |
4b11111a | 1306 | offset = sizeof(struct extendedFileEntry) + |
48d6d8ff | 1307 | iinfo->i_lenEAttr; |
1da177e4 LT |
1308 | } |
1309 | ||
cb00ea35 CG |
1310 | switch (fe->icbTag.fileType) { |
1311 | case ICBTAG_FILE_TYPE_DIRECTORY: | |
28de7948 CG |
1312 | inode->i_op = &udf_dir_inode_operations; |
1313 | inode->i_fop = &udf_dir_operations; | |
1314 | inode->i_mode |= S_IFDIR; | |
1315 | inc_nlink(inode); | |
1316 | break; | |
cb00ea35 CG |
1317 | case ICBTAG_FILE_TYPE_REALTIME: |
1318 | case ICBTAG_FILE_TYPE_REGULAR: | |
1319 | case ICBTAG_FILE_TYPE_UNDEF: | |
48d6d8ff | 1320 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) |
28de7948 CG |
1321 | inode->i_data.a_ops = &udf_adinicb_aops; |
1322 | else | |
1323 | inode->i_data.a_ops = &udf_aops; | |
1324 | inode->i_op = &udf_file_inode_operations; | |
1325 | inode->i_fop = &udf_file_operations; | |
1326 | inode->i_mode |= S_IFREG; | |
1327 | break; | |
cb00ea35 | 1328 | case ICBTAG_FILE_TYPE_BLOCK: |
28de7948 CG |
1329 | inode->i_mode |= S_IFBLK; |
1330 | break; | |
cb00ea35 | 1331 | case ICBTAG_FILE_TYPE_CHAR: |
28de7948 CG |
1332 | inode->i_mode |= S_IFCHR; |
1333 | break; | |
cb00ea35 | 1334 | case ICBTAG_FILE_TYPE_FIFO: |
28de7948 CG |
1335 | init_special_inode(inode, inode->i_mode | S_IFIFO, 0); |
1336 | break; | |
cb00ea35 | 1337 | case ICBTAG_FILE_TYPE_SOCKET: |
28de7948 CG |
1338 | init_special_inode(inode, inode->i_mode | S_IFSOCK, 0); |
1339 | break; | |
cb00ea35 | 1340 | case ICBTAG_FILE_TYPE_SYMLINK: |
28de7948 CG |
1341 | inode->i_data.a_ops = &udf_symlink_aops; |
1342 | inode->i_op = &page_symlink_inode_operations; | |
1343 | inode->i_mode = S_IFLNK | S_IRWXUGO; | |
1344 | break; | |
cb00ea35 | 1345 | default: |
4b11111a MS |
1346 | printk(KERN_ERR "udf: udf_fill_inode(ino %ld) failed unknown " |
1347 | "file type=%d\n", inode->i_ino, | |
1348 | fe->icbTag.fileType); | |
28de7948 CG |
1349 | make_bad_inode(inode); |
1350 | return; | |
1da177e4 | 1351 | } |
cb00ea35 | 1352 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
4b11111a MS |
1353 | struct deviceSpec *dsea = |
1354 | (struct deviceSpec *)udf_get_extendedattr(inode, 12, 1); | |
cb00ea35 CG |
1355 | if (dsea) { |
1356 | init_special_inode(inode, inode->i_mode, | |
4b11111a MS |
1357 | MKDEV(le32_to_cpu(dsea->majorDeviceIdent), |
1358 | le32_to_cpu(dsea->minorDeviceIdent))); | |
1da177e4 | 1359 | /* Developer ID ??? */ |
4b11111a | 1360 | } else |
1da177e4 | 1361 | make_bad_inode(inode); |
1da177e4 LT |
1362 | } |
1363 | } | |
1364 | ||
647bd61a CG |
1365 | static int udf_alloc_i_data(struct inode *inode, size_t size) |
1366 | { | |
48d6d8ff MS |
1367 | struct udf_inode_info *iinfo = UDF_I(inode); |
1368 | iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL); | |
647bd61a | 1369 | |
48d6d8ff | 1370 | if (!iinfo->i_ext.i_data) { |
4b11111a MS |
1371 | printk(KERN_ERR "udf:udf_alloc_i_data (ino %ld) " |
1372 | "no free memory\n", inode->i_ino); | |
647bd61a CG |
1373 | return -ENOMEM; |
1374 | } | |
1375 | ||
1376 | return 0; | |
1377 | } | |
1378 | ||
cb00ea35 | 1379 | static mode_t udf_convert_permissions(struct fileEntry *fe) |
1da177e4 LT |
1380 | { |
1381 | mode_t mode; | |
1382 | uint32_t permissions; | |
1383 | uint32_t flags; | |
1384 | ||
1385 | permissions = le32_to_cpu(fe->permissions); | |
1386 | flags = le16_to_cpu(fe->icbTag.flags); | |
1387 | ||
4b11111a MS |
1388 | mode = ((permissions) & S_IRWXO) | |
1389 | ((permissions >> 2) & S_IRWXG) | | |
1390 | ((permissions >> 4) & S_IRWXU) | | |
1391 | ((flags & ICBTAG_FLAG_SETUID) ? S_ISUID : 0) | | |
1392 | ((flags & ICBTAG_FLAG_SETGID) ? S_ISGID : 0) | | |
1393 | ((flags & ICBTAG_FLAG_STICKY) ? S_ISVTX : 0); | |
1da177e4 LT |
1394 | |
1395 | return mode; | |
1396 | } | |
1397 | ||
cb00ea35 | 1398 | int udf_write_inode(struct inode *inode, int sync) |
1da177e4 LT |
1399 | { |
1400 | int ret; | |
28de7948 | 1401 | |
1da177e4 LT |
1402 | lock_kernel(); |
1403 | ret = udf_update_inode(inode, sync); | |
1404 | unlock_kernel(); | |
28de7948 | 1405 | |
1da177e4 LT |
1406 | return ret; |
1407 | } | |
1408 | ||
cb00ea35 | 1409 | int udf_sync_inode(struct inode *inode) |
1da177e4 LT |
1410 | { |
1411 | return udf_update_inode(inode, 1); | |
1412 | } | |
1413 | ||
cb00ea35 | 1414 | static int udf_update_inode(struct inode *inode, int do_sync) |
1da177e4 LT |
1415 | { |
1416 | struct buffer_head *bh = NULL; | |
1417 | struct fileEntry *fe; | |
1418 | struct extendedFileEntry *efe; | |
1419 | uint32_t udfperms; | |
1420 | uint16_t icbflags; | |
1421 | uint16_t crclen; | |
1da177e4 LT |
1422 | kernel_timestamp cpu_time; |
1423 | int err = 0; | |
6c79e987 | 1424 | struct udf_sb_info *sbi = UDF_SB(inode->i_sb); |
4b11111a | 1425 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; |
48d6d8ff | 1426 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 | 1427 | |
4b11111a MS |
1428 | bh = udf_tread(inode->i_sb, |
1429 | udf_get_lb_pblock(inode->i_sb, | |
48d6d8ff | 1430 | iinfo->i_location, 0)); |
cb00ea35 | 1431 | if (!bh) { |
1da177e4 LT |
1432 | udf_debug("bread failure\n"); |
1433 | return -EIO; | |
1434 | } | |
1435 | ||
1436 | memset(bh->b_data, 0x00, inode->i_sb->s_blocksize); | |
1437 | ||
1438 | fe = (struct fileEntry *)bh->b_data; | |
1439 | efe = (struct extendedFileEntry *)bh->b_data; | |
1440 | ||
5e0f0017 | 1441 | if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) { |
1da177e4 | 1442 | struct unallocSpaceEntry *use = |
28de7948 | 1443 | (struct unallocSpaceEntry *)bh->b_data; |
1da177e4 | 1444 | |
48d6d8ff | 1445 | use->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); |
4b11111a | 1446 | memcpy(bh->b_data + sizeof(struct unallocSpaceEntry), |
48d6d8ff | 1447 | iinfo->i_ext.i_data, inode->i_sb->s_blocksize - |
4b11111a MS |
1448 | sizeof(struct unallocSpaceEntry)); |
1449 | crclen = sizeof(struct unallocSpaceEntry) + | |
48d6d8ff | 1450 | iinfo->i_lenAlloc - sizeof(tag); |
4b11111a | 1451 | use->descTag.tagLocation = cpu_to_le32( |
48d6d8ff | 1452 | iinfo->i_location. |
4b11111a | 1453 | logicalBlockNum); |
1da177e4 | 1454 | use->descTag.descCRCLength = cpu_to_le16(crclen); |
4b11111a MS |
1455 | use->descTag.descCRC = cpu_to_le16(udf_crc((char *)use + |
1456 | sizeof(tag), crclen, | |
1457 | 0)); | |
3f2587bb | 1458 | use->descTag.tagChecksum = udf_tag_checksum(&use->descTag); |
1da177e4 LT |
1459 | |
1460 | mark_buffer_dirty(bh); | |
3bf25cb4 | 1461 | brelse(bh); |
1da177e4 LT |
1462 | return err; |
1463 | } | |
1464 | ||
4d6660eb PS |
1465 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_FORGET)) |
1466 | fe->uid = cpu_to_le32(-1); | |
cb00ea35 CG |
1467 | else |
1468 | fe->uid = cpu_to_le32(inode->i_uid); | |
1da177e4 | 1469 | |
4d6660eb PS |
1470 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_FORGET)) |
1471 | fe->gid = cpu_to_le32(-1); | |
cb00ea35 CG |
1472 | else |
1473 | fe->gid = cpu_to_le32(inode->i_gid); | |
1da177e4 | 1474 | |
4b11111a MS |
1475 | udfperms = ((inode->i_mode & S_IRWXO)) | |
1476 | ((inode->i_mode & S_IRWXG) << 2) | | |
1477 | ((inode->i_mode & S_IRWXU) << 4); | |
1da177e4 | 1478 | |
4b11111a MS |
1479 | udfperms |= (le32_to_cpu(fe->permissions) & |
1480 | (FE_PERM_O_DELETE | FE_PERM_O_CHATTR | | |
1481 | FE_PERM_G_DELETE | FE_PERM_G_CHATTR | | |
1482 | FE_PERM_U_DELETE | FE_PERM_U_CHATTR)); | |
1da177e4 LT |
1483 | fe->permissions = cpu_to_le32(udfperms); |
1484 | ||
1485 | if (S_ISDIR(inode->i_mode)) | |
1486 | fe->fileLinkCount = cpu_to_le16(inode->i_nlink - 1); | |
1487 | else | |
1488 | fe->fileLinkCount = cpu_to_le16(inode->i_nlink); | |
1489 | ||
1490 | fe->informationLength = cpu_to_le64(inode->i_size); | |
1491 | ||
cb00ea35 | 1492 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
1da177e4 | 1493 | regid *eid; |
28de7948 CG |
1494 | struct deviceSpec *dsea = |
1495 | (struct deviceSpec *)udf_get_extendedattr(inode, 12, 1); | |
cb00ea35 | 1496 | if (!dsea) { |
1da177e4 | 1497 | dsea = (struct deviceSpec *) |
28de7948 CG |
1498 | udf_add_extendedattr(inode, |
1499 | sizeof(struct deviceSpec) + | |
1500 | sizeof(regid), 12, 0x3); | |
1da177e4 LT |
1501 | dsea->attrType = cpu_to_le32(12); |
1502 | dsea->attrSubtype = 1; | |
4b11111a MS |
1503 | dsea->attrLength = cpu_to_le32( |
1504 | sizeof(struct deviceSpec) + | |
1505 | sizeof(regid)); | |
1da177e4 LT |
1506 | dsea->impUseLength = cpu_to_le32(sizeof(regid)); |
1507 | } | |
28de7948 | 1508 | eid = (regid *)dsea->impUse; |
1da177e4 LT |
1509 | memset(eid, 0, sizeof(regid)); |
1510 | strcpy(eid->ident, UDF_ID_DEVELOPER); | |
1511 | eid->identSuffix[0] = UDF_OS_CLASS_UNIX; | |
1512 | eid->identSuffix[1] = UDF_OS_ID_LINUX; | |
1513 | dsea->majorDeviceIdent = cpu_to_le32(imajor(inode)); | |
1514 | dsea->minorDeviceIdent = cpu_to_le32(iminor(inode)); | |
1515 | } | |
1516 | ||
48d6d8ff | 1517 | if (iinfo->i_efe == 0) { |
c0b34438 | 1518 | memcpy(bh->b_data + sizeof(struct fileEntry), |
48d6d8ff | 1519 | iinfo->i_ext.i_data, |
cb00ea35 | 1520 | inode->i_sb->s_blocksize - sizeof(struct fileEntry)); |
28de7948 | 1521 | fe->logicalBlocksRecorded = cpu_to_le64( |
4b11111a MS |
1522 | (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> |
1523 | (blocksize_bits - 9)); | |
1da177e4 LT |
1524 | |
1525 | if (udf_time_to_stamp(&cpu_time, inode->i_atime)) | |
1526 | fe->accessTime = cpu_to_lets(cpu_time); | |
1527 | if (udf_time_to_stamp(&cpu_time, inode->i_mtime)) | |
1528 | fe->modificationTime = cpu_to_lets(cpu_time); | |
1529 | if (udf_time_to_stamp(&cpu_time, inode->i_ctime)) | |
1530 | fe->attrTime = cpu_to_lets(cpu_time); | |
1531 | memset(&(fe->impIdent), 0, sizeof(regid)); | |
1532 | strcpy(fe->impIdent.ident, UDF_ID_DEVELOPER); | |
1533 | fe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; | |
1534 | fe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; | |
48d6d8ff MS |
1535 | fe->uniqueID = cpu_to_le64(iinfo->i_unique); |
1536 | fe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr); | |
1537 | fe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); | |
1da177e4 LT |
1538 | fe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_FE); |
1539 | crclen = sizeof(struct fileEntry); | |
cb00ea35 | 1540 | } else { |
4b11111a | 1541 | memcpy(bh->b_data + sizeof(struct extendedFileEntry), |
48d6d8ff | 1542 | iinfo->i_ext.i_data, |
4b11111a MS |
1543 | inode->i_sb->s_blocksize - |
1544 | sizeof(struct extendedFileEntry)); | |
1da177e4 | 1545 | efe->objectSize = cpu_to_le64(inode->i_size); |
28de7948 | 1546 | efe->logicalBlocksRecorded = cpu_to_le64( |
4b11111a MS |
1547 | (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> |
1548 | (blocksize_bits - 9)); | |
1da177e4 | 1549 | |
48d6d8ff MS |
1550 | if (iinfo->i_crtime.tv_sec > inode->i_atime.tv_sec || |
1551 | (iinfo->i_crtime.tv_sec == inode->i_atime.tv_sec && | |
1552 | iinfo->i_crtime.tv_nsec > inode->i_atime.tv_nsec)) | |
1553 | iinfo->i_crtime = inode->i_atime; | |
4b11111a | 1554 | |
48d6d8ff MS |
1555 | if (iinfo->i_crtime.tv_sec > inode->i_mtime.tv_sec || |
1556 | (iinfo->i_crtime.tv_sec == inode->i_mtime.tv_sec && | |
1557 | iinfo->i_crtime.tv_nsec > inode->i_mtime.tv_nsec)) | |
1558 | iinfo->i_crtime = inode->i_mtime; | |
4b11111a | 1559 | |
48d6d8ff MS |
1560 | if (iinfo->i_crtime.tv_sec > inode->i_ctime.tv_sec || |
1561 | (iinfo->i_crtime.tv_sec == inode->i_ctime.tv_sec && | |
1562 | iinfo->i_crtime.tv_nsec > inode->i_ctime.tv_nsec)) | |
1563 | iinfo->i_crtime = inode->i_ctime; | |
1da177e4 LT |
1564 | |
1565 | if (udf_time_to_stamp(&cpu_time, inode->i_atime)) | |
1566 | efe->accessTime = cpu_to_lets(cpu_time); | |
1567 | if (udf_time_to_stamp(&cpu_time, inode->i_mtime)) | |
1568 | efe->modificationTime = cpu_to_lets(cpu_time); | |
48d6d8ff | 1569 | if (udf_time_to_stamp(&cpu_time, iinfo->i_crtime)) |
1da177e4 LT |
1570 | efe->createTime = cpu_to_lets(cpu_time); |
1571 | if (udf_time_to_stamp(&cpu_time, inode->i_ctime)) | |
1572 | efe->attrTime = cpu_to_lets(cpu_time); | |
1573 | ||
1574 | memset(&(efe->impIdent), 0, sizeof(regid)); | |
1575 | strcpy(efe->impIdent.ident, UDF_ID_DEVELOPER); | |
1576 | efe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; | |
1577 | efe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; | |
48d6d8ff MS |
1578 | efe->uniqueID = cpu_to_le64(iinfo->i_unique); |
1579 | efe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr); | |
1580 | efe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); | |
1da177e4 LT |
1581 | efe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EFE); |
1582 | crclen = sizeof(struct extendedFileEntry); | |
1583 | } | |
48d6d8ff | 1584 | if (iinfo->i_strat4096) { |
1da177e4 LT |
1585 | fe->icbTag.strategyType = cpu_to_le16(4096); |
1586 | fe->icbTag.strategyParameter = cpu_to_le16(1); | |
1587 | fe->icbTag.numEntries = cpu_to_le16(2); | |
cb00ea35 | 1588 | } else { |
1da177e4 LT |
1589 | fe->icbTag.strategyType = cpu_to_le16(4); |
1590 | fe->icbTag.numEntries = cpu_to_le16(1); | |
1591 | } | |
1592 | ||
1593 | if (S_ISDIR(inode->i_mode)) | |
1594 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_DIRECTORY; | |
1595 | else if (S_ISREG(inode->i_mode)) | |
1596 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_REGULAR; | |
1597 | else if (S_ISLNK(inode->i_mode)) | |
1598 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_SYMLINK; | |
1599 | else if (S_ISBLK(inode->i_mode)) | |
1600 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_BLOCK; | |
1601 | else if (S_ISCHR(inode->i_mode)) | |
1602 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_CHAR; | |
1603 | else if (S_ISFIFO(inode->i_mode)) | |
1604 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_FIFO; | |
1605 | else if (S_ISSOCK(inode->i_mode)) | |
1606 | fe->icbTag.fileType = ICBTAG_FILE_TYPE_SOCKET; | |
1607 | ||
48d6d8ff | 1608 | icbflags = iinfo->i_alloc_type | |
28de7948 CG |
1609 | ((inode->i_mode & S_ISUID) ? ICBTAG_FLAG_SETUID : 0) | |
1610 | ((inode->i_mode & S_ISGID) ? ICBTAG_FLAG_SETGID : 0) | | |
1611 | ((inode->i_mode & S_ISVTX) ? ICBTAG_FLAG_STICKY : 0) | | |
1612 | (le16_to_cpu(fe->icbTag.flags) & | |
1613 | ~(ICBTAG_FLAG_AD_MASK | ICBTAG_FLAG_SETUID | | |
1614 | ICBTAG_FLAG_SETGID | ICBTAG_FLAG_STICKY)); | |
1da177e4 LT |
1615 | |
1616 | fe->icbTag.flags = cpu_to_le16(icbflags); | |
6c79e987 | 1617 | if (sbi->s_udfrev >= 0x0200) |
1da177e4 LT |
1618 | fe->descTag.descVersion = cpu_to_le16(3); |
1619 | else | |
1620 | fe->descTag.descVersion = cpu_to_le16(2); | |
6c79e987 | 1621 | fe->descTag.tagSerialNum = cpu_to_le16(sbi->s_serial_number); |
4b11111a | 1622 | fe->descTag.tagLocation = cpu_to_le32( |
48d6d8ff MS |
1623 | iinfo->i_location.logicalBlockNum); |
1624 | crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc - | |
c0b34438 | 1625 | sizeof(tag); |
1da177e4 | 1626 | fe->descTag.descCRCLength = cpu_to_le16(crclen); |
4b11111a MS |
1627 | fe->descTag.descCRC = cpu_to_le16(udf_crc((char *)fe + sizeof(tag), |
1628 | crclen, 0)); | |
3f2587bb | 1629 | fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag); |
1da177e4 LT |
1630 | |
1631 | /* write the data blocks */ | |
1632 | mark_buffer_dirty(bh); | |
cb00ea35 | 1633 | if (do_sync) { |
1da177e4 | 1634 | sync_dirty_buffer(bh); |
cb00ea35 | 1635 | if (buffer_req(bh) && !buffer_uptodate(bh)) { |
4b11111a MS |
1636 | printk(KERN_WARNING "IO error syncing udf inode " |
1637 | "[%s:%08lx]\n", inode->i_sb->s_id, | |
1638 | inode->i_ino); | |
1da177e4 LT |
1639 | err = -EIO; |
1640 | } | |
1641 | } | |
3bf25cb4 | 1642 | brelse(bh); |
28de7948 | 1643 | |
1da177e4 LT |
1644 | return err; |
1645 | } | |
1646 | ||
cb00ea35 | 1647 | struct inode *udf_iget(struct super_block *sb, kernel_lb_addr ino) |
1da177e4 LT |
1648 | { |
1649 | unsigned long block = udf_get_lb_pblock(sb, ino, 0); | |
1650 | struct inode *inode = iget_locked(sb, block); | |
1651 | ||
1652 | if (!inode) | |
1653 | return NULL; | |
1654 | ||
1655 | if (inode->i_state & I_NEW) { | |
c0b34438 | 1656 | memcpy(&UDF_I(inode)->i_location, &ino, sizeof(kernel_lb_addr)); |
1da177e4 LT |
1657 | __udf_read_inode(inode); |
1658 | unlock_new_inode(inode); | |
1659 | } | |
1660 | ||
1661 | if (is_bad_inode(inode)) | |
1662 | goto out_iput; | |
1663 | ||
4b11111a MS |
1664 | if (ino.logicalBlockNum >= UDF_SB(sb)-> |
1665 | s_partmaps[ino.partitionReferenceNum].s_partition_len) { | |
1da177e4 | 1666 | udf_debug("block=%d, partition=%d out of range\n", |
cb00ea35 | 1667 | ino.logicalBlockNum, ino.partitionReferenceNum); |
1da177e4 LT |
1668 | make_bad_inode(inode); |
1669 | goto out_iput; | |
1670 | } | |
1671 | ||
1672 | return inode; | |
1673 | ||
28de7948 | 1674 | out_iput: |
1da177e4 LT |
1675 | iput(inode); |
1676 | return NULL; | |
1677 | } | |
1678 | ||
4b11111a | 1679 | int8_t udf_add_aext(struct inode *inode, struct extent_position *epos, |
cb00ea35 | 1680 | kernel_lb_addr eloc, uint32_t elen, int inc) |
1da177e4 LT |
1681 | { |
1682 | int adsize; | |
1683 | short_ad *sad = NULL; | |
1684 | long_ad *lad = NULL; | |
1685 | struct allocExtDesc *aed; | |
1686 | int8_t etype; | |
1687 | uint8_t *ptr; | |
48d6d8ff | 1688 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 | 1689 | |
ff116fc8 | 1690 | if (!epos->bh) |
48d6d8ff | 1691 | ptr = iinfo->i_ext.i_data + epos->offset - |
4b11111a | 1692 | udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1693 | iinfo->i_lenEAttr; |
1da177e4 | 1694 | else |
ff116fc8 | 1695 | ptr = epos->bh->b_data + epos->offset; |
1da177e4 | 1696 | |
48d6d8ff | 1697 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) |
1da177e4 | 1698 | adsize = sizeof(short_ad); |
48d6d8ff | 1699 | else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) |
1da177e4 LT |
1700 | adsize = sizeof(long_ad); |
1701 | else | |
1702 | return -1; | |
1703 | ||
cb00ea35 | 1704 | if (epos->offset + (2 * adsize) > inode->i_sb->s_blocksize) { |
1da177e4 LT |
1705 | char *sptr, *dptr; |
1706 | struct buffer_head *nbh; | |
1707 | int err, loffset; | |
ff116fc8 | 1708 | kernel_lb_addr obloc = epos->block; |
1da177e4 | 1709 | |
4b11111a MS |
1710 | epos->block.logicalBlockNum = udf_new_block(inode->i_sb, NULL, |
1711 | obloc.partitionReferenceNum, | |
1712 | obloc.logicalBlockNum, &err); | |
1713 | if (!epos->block.logicalBlockNum) | |
1da177e4 | 1714 | return -1; |
4b11111a MS |
1715 | nbh = udf_tgetblk(inode->i_sb, udf_get_lb_pblock(inode->i_sb, |
1716 | epos->block, | |
1717 | 0)); | |
1718 | if (!nbh) | |
1da177e4 | 1719 | return -1; |
1da177e4 LT |
1720 | lock_buffer(nbh); |
1721 | memset(nbh->b_data, 0x00, inode->i_sb->s_blocksize); | |
1722 | set_buffer_uptodate(nbh); | |
1723 | unlock_buffer(nbh); | |
1724 | mark_buffer_dirty_inode(nbh, inode); | |
1725 | ||
1726 | aed = (struct allocExtDesc *)(nbh->b_data); | |
1727 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT)) | |
4b11111a MS |
1728 | aed->previousAllocExtLocation = |
1729 | cpu_to_le32(obloc.logicalBlockNum); | |
cb00ea35 | 1730 | if (epos->offset + adsize > inode->i_sb->s_blocksize) { |
ff116fc8 | 1731 | loffset = epos->offset; |
1da177e4 LT |
1732 | aed->lengthAllocDescs = cpu_to_le32(adsize); |
1733 | sptr = ptr - adsize; | |
1734 | dptr = nbh->b_data + sizeof(struct allocExtDesc); | |
1735 | memcpy(dptr, sptr, adsize); | |
ff116fc8 | 1736 | epos->offset = sizeof(struct allocExtDesc) + adsize; |
cb00ea35 | 1737 | } else { |
ff116fc8 | 1738 | loffset = epos->offset + adsize; |
1da177e4 LT |
1739 | aed->lengthAllocDescs = cpu_to_le32(0); |
1740 | sptr = ptr; | |
ff116fc8 | 1741 | epos->offset = sizeof(struct allocExtDesc); |
1da177e4 | 1742 | |
cb00ea35 | 1743 | if (epos->bh) { |
ff116fc8 | 1744 | aed = (struct allocExtDesc *)epos->bh->b_data; |
c2104fda | 1745 | le32_add_cpu(&aed->lengthAllocDescs, adsize); |
cb00ea35 | 1746 | } else { |
48d6d8ff | 1747 | iinfo->i_lenAlloc += adsize; |
1da177e4 LT |
1748 | mark_inode_dirty(inode); |
1749 | } | |
1750 | } | |
6c79e987 | 1751 | if (UDF_SB(inode->i_sb)->s_udfrev >= 0x0200) |
1da177e4 | 1752 | udf_new_tag(nbh->b_data, TAG_IDENT_AED, 3, 1, |
cb00ea35 | 1753 | epos->block.logicalBlockNum, sizeof(tag)); |
1da177e4 LT |
1754 | else |
1755 | udf_new_tag(nbh->b_data, TAG_IDENT_AED, 2, 1, | |
cb00ea35 | 1756 | epos->block.logicalBlockNum, sizeof(tag)); |
48d6d8ff | 1757 | switch (iinfo->i_alloc_type) { |
cb00ea35 | 1758 | case ICBTAG_FLAG_AD_SHORT: |
28de7948 CG |
1759 | sad = (short_ad *)sptr; |
1760 | sad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS | | |
1761 | inode->i_sb->s_blocksize); | |
4b11111a MS |
1762 | sad->extPosition = |
1763 | cpu_to_le32(epos->block.logicalBlockNum); | |
28de7948 | 1764 | break; |
cb00ea35 | 1765 | case ICBTAG_FLAG_AD_LONG: |
28de7948 CG |
1766 | lad = (long_ad *)sptr; |
1767 | lad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS | | |
1768 | inode->i_sb->s_blocksize); | |
1769 | lad->extLocation = cpu_to_lelb(epos->block); | |
1770 | memset(lad->impUse, 0x00, sizeof(lad->impUse)); | |
1771 | break; | |
1da177e4 | 1772 | } |
cb00ea35 | 1773 | if (epos->bh) { |
28de7948 | 1774 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 1775 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) |
ff116fc8 | 1776 | udf_update_tag(epos->bh->b_data, loffset); |
1da177e4 | 1777 | else |
4b11111a MS |
1778 | udf_update_tag(epos->bh->b_data, |
1779 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 1780 | mark_buffer_dirty_inode(epos->bh, inode); |
3bf25cb4 | 1781 | brelse(epos->bh); |
28de7948 | 1782 | } else { |
1da177e4 | 1783 | mark_inode_dirty(inode); |
28de7948 | 1784 | } |
ff116fc8 | 1785 | epos->bh = nbh; |
1da177e4 LT |
1786 | } |
1787 | ||
ff116fc8 | 1788 | etype = udf_write_aext(inode, epos, eloc, elen, inc); |
1da177e4 | 1789 | |
cb00ea35 | 1790 | if (!epos->bh) { |
48d6d8ff | 1791 | iinfo->i_lenAlloc += adsize; |
1da177e4 | 1792 | mark_inode_dirty(inode); |
cb00ea35 | 1793 | } else { |
ff116fc8 | 1794 | aed = (struct allocExtDesc *)epos->bh->b_data; |
c2104fda | 1795 | le32_add_cpu(&aed->lengthAllocDescs, adsize); |
4b11111a MS |
1796 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
1797 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) | |
1798 | udf_update_tag(epos->bh->b_data, | |
1799 | epos->offset + (inc ? 0 : adsize)); | |
1da177e4 | 1800 | else |
4b11111a MS |
1801 | udf_update_tag(epos->bh->b_data, |
1802 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 1803 | mark_buffer_dirty_inode(epos->bh, inode); |
1da177e4 LT |
1804 | } |
1805 | ||
1806 | return etype; | |
1807 | } | |
1808 | ||
4b11111a | 1809 | int8_t udf_write_aext(struct inode *inode, struct extent_position *epos, |
cb00ea35 | 1810 | kernel_lb_addr eloc, uint32_t elen, int inc) |
1da177e4 LT |
1811 | { |
1812 | int adsize; | |
1813 | uint8_t *ptr; | |
28de7948 CG |
1814 | short_ad *sad; |
1815 | long_ad *lad; | |
48d6d8ff | 1816 | struct udf_inode_info *iinfo = UDF_I(inode); |
1da177e4 | 1817 | |
ff116fc8 | 1818 | if (!epos->bh) |
48d6d8ff | 1819 | ptr = iinfo->i_ext.i_data + epos->offset - |
4b11111a | 1820 | udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1821 | iinfo->i_lenEAttr; |
1da177e4 | 1822 | else |
ff116fc8 | 1823 | ptr = epos->bh->b_data + epos->offset; |
1da177e4 | 1824 | |
48d6d8ff | 1825 | switch (iinfo->i_alloc_type) { |
cb00ea35 | 1826 | case ICBTAG_FLAG_AD_SHORT: |
28de7948 CG |
1827 | sad = (short_ad *)ptr; |
1828 | sad->extLength = cpu_to_le32(elen); | |
1829 | sad->extPosition = cpu_to_le32(eloc.logicalBlockNum); | |
1830 | adsize = sizeof(short_ad); | |
1831 | break; | |
cb00ea35 | 1832 | case ICBTAG_FLAG_AD_LONG: |
28de7948 CG |
1833 | lad = (long_ad *)ptr; |
1834 | lad->extLength = cpu_to_le32(elen); | |
1835 | lad->extLocation = cpu_to_lelb(eloc); | |
1836 | memset(lad->impUse, 0x00, sizeof(lad->impUse)); | |
1837 | adsize = sizeof(long_ad); | |
1838 | break; | |
cb00ea35 CG |
1839 | default: |
1840 | return -1; | |
1da177e4 LT |
1841 | } |
1842 | ||
cb00ea35 | 1843 | if (epos->bh) { |
28de7948 | 1844 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 1845 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) { |
4b11111a MS |
1846 | struct allocExtDesc *aed = |
1847 | (struct allocExtDesc *)epos->bh->b_data; | |
ff116fc8 | 1848 | udf_update_tag(epos->bh->b_data, |
4b11111a MS |
1849 | le32_to_cpu(aed->lengthAllocDescs) + |
1850 | sizeof(struct allocExtDesc)); | |
1da177e4 | 1851 | } |
ff116fc8 | 1852 | mark_buffer_dirty_inode(epos->bh, inode); |
28de7948 | 1853 | } else { |
1da177e4 | 1854 | mark_inode_dirty(inode); |
28de7948 | 1855 | } |
1da177e4 LT |
1856 | |
1857 | if (inc) | |
ff116fc8 | 1858 | epos->offset += adsize; |
28de7948 | 1859 | |
1da177e4 LT |
1860 | return (elen >> 30); |
1861 | } | |
1862 | ||
4b11111a MS |
1863 | int8_t udf_next_aext(struct inode *inode, struct extent_position *epos, |
1864 | kernel_lb_addr *eloc, uint32_t *elen, int inc) | |
1da177e4 LT |
1865 | { |
1866 | int8_t etype; | |
1867 | ||
ff116fc8 | 1868 | while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) == |
cb00ea35 | 1869 | (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) { |
4b11111a | 1870 | int block; |
ff116fc8 JK |
1871 | epos->block = *eloc; |
1872 | epos->offset = sizeof(struct allocExtDesc); | |
3bf25cb4 | 1873 | brelse(epos->bh); |
4b11111a MS |
1874 | block = udf_get_lb_pblock(inode->i_sb, epos->block, 0); |
1875 | epos->bh = udf_tread(inode->i_sb, block); | |
1876 | if (!epos->bh) { | |
1877 | udf_debug("reading block %d failed!\n", block); | |
1da177e4 LT |
1878 | return -1; |
1879 | } | |
1880 | } | |
1881 | ||
1882 | return etype; | |
1883 | } | |
1884 | ||
4b11111a MS |
1885 | int8_t udf_current_aext(struct inode *inode, struct extent_position *epos, |
1886 | kernel_lb_addr *eloc, uint32_t *elen, int inc) | |
1da177e4 LT |
1887 | { |
1888 | int alen; | |
1889 | int8_t etype; | |
1890 | uint8_t *ptr; | |
28de7948 CG |
1891 | short_ad *sad; |
1892 | long_ad *lad; | |
48d6d8ff | 1893 | struct udf_inode_info *iinfo = UDF_I(inode); |
28de7948 | 1894 | |
cb00ea35 | 1895 | if (!epos->bh) { |
ff116fc8 JK |
1896 | if (!epos->offset) |
1897 | epos->offset = udf_file_entry_alloc_offset(inode); | |
48d6d8ff | 1898 | ptr = iinfo->i_ext.i_data + epos->offset - |
4b11111a | 1899 | udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1900 | iinfo->i_lenEAttr; |
4b11111a | 1901 | alen = udf_file_entry_alloc_offset(inode) + |
48d6d8ff | 1902 | iinfo->i_lenAlloc; |
cb00ea35 | 1903 | } else { |
ff116fc8 JK |
1904 | if (!epos->offset) |
1905 | epos->offset = sizeof(struct allocExtDesc); | |
1906 | ptr = epos->bh->b_data + epos->offset; | |
28de7948 | 1907 | alen = sizeof(struct allocExtDesc) + |
4b11111a MS |
1908 | le32_to_cpu(((struct allocExtDesc *)epos->bh->b_data)-> |
1909 | lengthAllocDescs); | |
1da177e4 LT |
1910 | } |
1911 | ||
48d6d8ff | 1912 | switch (iinfo->i_alloc_type) { |
cb00ea35 | 1913 | case ICBTAG_FLAG_AD_SHORT: |
4b11111a MS |
1914 | sad = udf_get_fileshortad(ptr, alen, &epos->offset, inc); |
1915 | if (!sad) | |
28de7948 CG |
1916 | return -1; |
1917 | etype = le32_to_cpu(sad->extLength) >> 30; | |
1918 | eloc->logicalBlockNum = le32_to_cpu(sad->extPosition); | |
4b11111a | 1919 | eloc->partitionReferenceNum = |
48d6d8ff | 1920 | iinfo->i_location.partitionReferenceNum; |
28de7948 CG |
1921 | *elen = le32_to_cpu(sad->extLength) & UDF_EXTENT_LENGTH_MASK; |
1922 | break; | |
cb00ea35 | 1923 | case ICBTAG_FLAG_AD_LONG: |
4b11111a MS |
1924 | lad = udf_get_filelongad(ptr, alen, &epos->offset, inc); |
1925 | if (!lad) | |
1da177e4 | 1926 | return -1; |
28de7948 CG |
1927 | etype = le32_to_cpu(lad->extLength) >> 30; |
1928 | *eloc = lelb_to_cpu(lad->extLocation); | |
1929 | *elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK; | |
1930 | break; | |
1931 | default: | |
4b11111a | 1932 | udf_debug("alloc_type = %d unsupported\n", |
48d6d8ff | 1933 | iinfo->i_alloc_type); |
28de7948 | 1934 | return -1; |
1da177e4 LT |
1935 | } |
1936 | ||
1937 | return etype; | |
1938 | } | |
1939 | ||
28de7948 CG |
1940 | static int8_t udf_insert_aext(struct inode *inode, struct extent_position epos, |
1941 | kernel_lb_addr neloc, uint32_t nelen) | |
1da177e4 LT |
1942 | { |
1943 | kernel_lb_addr oeloc; | |
1944 | uint32_t oelen; | |
1945 | int8_t etype; | |
1946 | ||
ff116fc8 | 1947 | if (epos.bh) |
3bf25cb4 | 1948 | get_bh(epos.bh); |
1da177e4 | 1949 | |
cb00ea35 | 1950 | while ((etype = udf_next_aext(inode, &epos, &oeloc, &oelen, 0)) != -1) { |
ff116fc8 | 1951 | udf_write_aext(inode, &epos, neloc, nelen, 1); |
1da177e4 LT |
1952 | neloc = oeloc; |
1953 | nelen = (etype << 30) | oelen; | |
1954 | } | |
ff116fc8 | 1955 | udf_add_aext(inode, &epos, neloc, nelen, 1); |
3bf25cb4 | 1956 | brelse(epos.bh); |
28de7948 | 1957 | |
1da177e4 LT |
1958 | return (nelen >> 30); |
1959 | } | |
1960 | ||
4b11111a | 1961 | int8_t udf_delete_aext(struct inode *inode, struct extent_position epos, |
cb00ea35 | 1962 | kernel_lb_addr eloc, uint32_t elen) |
1da177e4 | 1963 | { |
ff116fc8 JK |
1964 | struct extent_position oepos; |
1965 | int adsize; | |
1da177e4 LT |
1966 | int8_t etype; |
1967 | struct allocExtDesc *aed; | |
48d6d8ff | 1968 | struct udf_inode_info *iinfo; |
1da177e4 | 1969 | |
cb00ea35 | 1970 | if (epos.bh) { |
3bf25cb4 JK |
1971 | get_bh(epos.bh); |
1972 | get_bh(epos.bh); | |
1da177e4 LT |
1973 | } |
1974 | ||
48d6d8ff MS |
1975 | iinfo = UDF_I(inode); |
1976 | if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) | |
1da177e4 | 1977 | adsize = sizeof(short_ad); |
48d6d8ff | 1978 | else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG) |
1da177e4 LT |
1979 | adsize = sizeof(long_ad); |
1980 | else | |
1981 | adsize = 0; | |
1982 | ||
ff116fc8 JK |
1983 | oepos = epos; |
1984 | if (udf_next_aext(inode, &epos, &eloc, &elen, 1) == -1) | |
1da177e4 LT |
1985 | return -1; |
1986 | ||
cb00ea35 | 1987 | while ((etype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) { |
ff116fc8 | 1988 | udf_write_aext(inode, &oepos, eloc, (etype << 30) | elen, 1); |
cb00ea35 | 1989 | if (oepos.bh != epos.bh) { |
ff116fc8 | 1990 | oepos.block = epos.block; |
3bf25cb4 JK |
1991 | brelse(oepos.bh); |
1992 | get_bh(epos.bh); | |
ff116fc8 JK |
1993 | oepos.bh = epos.bh; |
1994 | oepos.offset = epos.offset - adsize; | |
1da177e4 LT |
1995 | } |
1996 | } | |
1997 | memset(&eloc, 0x00, sizeof(kernel_lb_addr)); | |
1998 | elen = 0; | |
1999 | ||
cb00ea35 | 2000 | if (epos.bh != oepos.bh) { |
ff116fc8 JK |
2001 | udf_free_blocks(inode->i_sb, inode, epos.block, 0, 1); |
2002 | udf_write_aext(inode, &oepos, eloc, elen, 1); | |
2003 | udf_write_aext(inode, &oepos, eloc, elen, 1); | |
cb00ea35 | 2004 | if (!oepos.bh) { |
48d6d8ff | 2005 | iinfo->i_lenAlloc -= (adsize * 2); |
1da177e4 | 2006 | mark_inode_dirty(inode); |
cb00ea35 | 2007 | } else { |
ff116fc8 | 2008 | aed = (struct allocExtDesc *)oepos.bh->b_data; |
c2104fda | 2009 | le32_add_cpu(&aed->lengthAllocDescs, -(2 * adsize)); |
28de7948 | 2010 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 2011 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) |
4b11111a MS |
2012 | udf_update_tag(oepos.bh->b_data, |
2013 | oepos.offset - (2 * adsize)); | |
1da177e4 | 2014 | else |
4b11111a MS |
2015 | udf_update_tag(oepos.bh->b_data, |
2016 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 2017 | mark_buffer_dirty_inode(oepos.bh, inode); |
1da177e4 | 2018 | } |
cb00ea35 | 2019 | } else { |
ff116fc8 | 2020 | udf_write_aext(inode, &oepos, eloc, elen, 1); |
cb00ea35 | 2021 | if (!oepos.bh) { |
48d6d8ff | 2022 | iinfo->i_lenAlloc -= adsize; |
1da177e4 | 2023 | mark_inode_dirty(inode); |
cb00ea35 | 2024 | } else { |
ff116fc8 | 2025 | aed = (struct allocExtDesc *)oepos.bh->b_data; |
c2104fda | 2026 | le32_add_cpu(&aed->lengthAllocDescs, -adsize); |
28de7948 | 2027 | if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || |
6c79e987 | 2028 | UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) |
4b11111a MS |
2029 | udf_update_tag(oepos.bh->b_data, |
2030 | epos.offset - adsize); | |
1da177e4 | 2031 | else |
4b11111a MS |
2032 | udf_update_tag(oepos.bh->b_data, |
2033 | sizeof(struct allocExtDesc)); | |
ff116fc8 | 2034 | mark_buffer_dirty_inode(oepos.bh, inode); |
1da177e4 LT |
2035 | } |
2036 | } | |
647bd61a | 2037 | |
3bf25cb4 JK |
2038 | brelse(epos.bh); |
2039 | brelse(oepos.bh); | |
28de7948 | 2040 | |
1da177e4 LT |
2041 | return (elen >> 30); |
2042 | } | |
2043 | ||
4b11111a MS |
2044 | int8_t inode_bmap(struct inode *inode, sector_t block, |
2045 | struct extent_position *pos, kernel_lb_addr *eloc, | |
2046 | uint32_t *elen, sector_t *offset) | |
1da177e4 | 2047 | { |
4b11111a | 2048 | unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; |
cb00ea35 | 2049 | loff_t lbcount = 0, bcount = |
4b11111a | 2050 | (loff_t) block << blocksize_bits; |
1da177e4 | 2051 | int8_t etype; |
48d6d8ff | 2052 | struct udf_inode_info *iinfo; |
1da177e4 | 2053 | |
cb00ea35 | 2054 | if (block < 0) { |
1da177e4 LT |
2055 | printk(KERN_ERR "udf: inode_bmap: block < 0\n"); |
2056 | return -1; | |
2057 | } | |
1da177e4 | 2058 | |
48d6d8ff | 2059 | iinfo = UDF_I(inode); |
ff116fc8 | 2060 | pos->offset = 0; |
48d6d8ff | 2061 | pos->block = iinfo->i_location; |
ff116fc8 | 2062 | pos->bh = NULL; |
1da177e4 | 2063 | *elen = 0; |
1da177e4 | 2064 | |
cb00ea35 | 2065 | do { |
4b11111a MS |
2066 | etype = udf_next_aext(inode, pos, eloc, elen, 1); |
2067 | if (etype == -1) { | |
2068 | *offset = (bcount - lbcount) >> blocksize_bits; | |
48d6d8ff | 2069 | iinfo->i_lenExtents = lbcount; |
1da177e4 LT |
2070 | return -1; |
2071 | } | |
2072 | lbcount += *elen; | |
2073 | } while (lbcount <= bcount); | |
2074 | ||
4b11111a | 2075 | *offset = (bcount + *elen - lbcount) >> blocksize_bits; |
1da177e4 LT |
2076 | |
2077 | return etype; | |
2078 | } | |
2079 | ||
60448b1d | 2080 | long udf_block_map(struct inode *inode, sector_t block) |
1da177e4 | 2081 | { |
ff116fc8 JK |
2082 | kernel_lb_addr eloc; |
2083 | uint32_t elen; | |
60448b1d | 2084 | sector_t offset; |
28de7948 | 2085 | struct extent_position epos = {}; |
1da177e4 LT |
2086 | int ret; |
2087 | ||
2088 | lock_kernel(); | |
2089 | ||
4b11111a MS |
2090 | if (inode_bmap(inode, block, &epos, &eloc, &elen, &offset) == |
2091 | (EXT_RECORDED_ALLOCATED >> 30)) | |
60448b1d | 2092 | ret = udf_get_lb_pblock(inode->i_sb, eloc, offset); |
1da177e4 LT |
2093 | else |
2094 | ret = 0; | |
2095 | ||
2096 | unlock_kernel(); | |
3bf25cb4 | 2097 | brelse(epos.bh); |
1da177e4 LT |
2098 | |
2099 | if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_VARCONV)) | |
2100 | return udf_fixed_to_variable(ret); | |
2101 | else | |
2102 | return ret; | |
2103 | } |