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22#include "udfdecl.h"
23
24#include "udf_i.h"
25#include "udf_sb.h"
26#include <linux/string.h>
27#include <linux/errno.h>
28#include <linux/mm.h>
29#include <linux/slab.h>
30#include <linux/sched.h>
31#include <linux/crc-itu-t.h>
32#include <linux/exportfs.h>
33#include <linux/iversion.h>
34
35static inline int udf_match(int len1, const unsigned char *name1, int len2,
36 const unsigned char *name2)
37{
38 if (len1 != len2)
39 return 0;
40
41 return !memcmp(name1, name2, len1);
42}
43
44int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
45 struct fileIdentDesc *sfi, struct udf_fileident_bh *fibh,
46 uint8_t *impuse, uint8_t *fileident)
47{
48 uint16_t crclen = fibh->eoffset - fibh->soffset - sizeof(struct tag);
49 uint16_t crc;
50 int offset;
51 uint16_t liu = le16_to_cpu(cfi->lengthOfImpUse);
52 uint8_t lfi = cfi->lengthFileIdent;
53 int padlen = fibh->eoffset - fibh->soffset - liu - lfi -
54 sizeof(struct fileIdentDesc);
55 int adinicb = 0;
56
57 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
58 adinicb = 1;
59
60 offset = fibh->soffset + sizeof(struct fileIdentDesc);
61
62 if (impuse) {
63 if (adinicb || (offset + liu < 0)) {
64 memcpy((uint8_t *)sfi->impUse, impuse, liu);
65 } else if (offset >= 0) {
66 memcpy(fibh->ebh->b_data + offset, impuse, liu);
67 } else {
68 memcpy((uint8_t *)sfi->impUse, impuse, -offset);
69 memcpy(fibh->ebh->b_data, impuse - offset,
70 liu + offset);
71 }
72 }
73
74 offset += liu;
75
76 if (fileident) {
77 if (adinicb || (offset + lfi < 0)) {
78 memcpy(udf_get_fi_ident(sfi), fileident, lfi);
79 } else if (offset >= 0) {
80 memcpy(fibh->ebh->b_data + offset, fileident, lfi);
81 } else {
82 memcpy(udf_get_fi_ident(sfi), fileident, -offset);
83 memcpy(fibh->ebh->b_data, fileident - offset,
84 lfi + offset);
85 }
86 }
87
88 offset += lfi;
89
90 if (adinicb || (offset + padlen < 0)) {
91 memset(udf_get_fi_ident(sfi) + lfi, 0x00, padlen);
92 } else if (offset >= 0) {
93 memset(fibh->ebh->b_data + offset, 0x00, padlen);
94 } else {
95 memset(udf_get_fi_ident(sfi) + lfi, 0x00, -offset);
96 memset(fibh->ebh->b_data, 0x00, padlen + offset);
97 }
98
99 crc = crc_itu_t(0, (uint8_t *)cfi + sizeof(struct tag),
100 sizeof(struct fileIdentDesc) - sizeof(struct tag));
101
102 if (fibh->sbh == fibh->ebh) {
103 crc = crc_itu_t(crc, (uint8_t *)sfi->impUse,
104 crclen + sizeof(struct tag) -
105 sizeof(struct fileIdentDesc));
106 } else if (sizeof(struct fileIdentDesc) >= -fibh->soffset) {
107 crc = crc_itu_t(crc, fibh->ebh->b_data +
108 sizeof(struct fileIdentDesc) +
109 fibh->soffset,
110 crclen + sizeof(struct tag) -
111 sizeof(struct fileIdentDesc));
112 } else {
113 crc = crc_itu_t(crc, (uint8_t *)sfi->impUse,
114 -fibh->soffset - sizeof(struct fileIdentDesc));
115 crc = crc_itu_t(crc, fibh->ebh->b_data, fibh->eoffset);
116 }
117
118 cfi->descTag.descCRC = cpu_to_le16(crc);
119 cfi->descTag.descCRCLength = cpu_to_le16(crclen);
120 cfi->descTag.tagChecksum = udf_tag_checksum(&cfi->descTag);
121
122 if (adinicb || (sizeof(struct fileIdentDesc) <= -fibh->soffset)) {
123 memcpy((uint8_t *)sfi, (uint8_t *)cfi,
124 sizeof(struct fileIdentDesc));
125 } else {
126 memcpy((uint8_t *)sfi, (uint8_t *)cfi, -fibh->soffset);
127 memcpy(fibh->ebh->b_data, (uint8_t *)cfi - fibh->soffset,
128 sizeof(struct fileIdentDesc) + fibh->soffset);
129 }
130
131 if (adinicb) {
132 mark_inode_dirty(inode);
133 } else {
134 if (fibh->sbh != fibh->ebh)
135 mark_buffer_dirty_inode(fibh->ebh, inode);
136 mark_buffer_dirty_inode(fibh->sbh, inode);
137 }
138 inode_inc_iversion(inode);
139
140 return 0;
141}
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161
162static struct fileIdentDesc *udf_find_entry(struct inode *dir,
163 const struct qstr *child,
164 struct udf_fileident_bh *fibh,
165 struct fileIdentDesc *cfi)
166{
167 struct fileIdentDesc *fi = NULL;
168 loff_t f_pos;
169 udf_pblk_t block;
170 int flen;
171 unsigned char *fname = NULL, *copy_name = NULL;
172 unsigned char *nameptr;
173 uint8_t lfi;
174 uint16_t liu;
175 loff_t size;
176 struct kernel_lb_addr eloc;
177 uint32_t elen;
178 sector_t offset;
179 struct extent_position epos = {};
180 struct udf_inode_info *dinfo = UDF_I(dir);
181 int isdotdot = child->len == 2 &&
182 child->name[0] == '.' && child->name[1] == '.';
183 struct super_block *sb = dir->i_sb;
184
185 size = udf_ext0_offset(dir) + dir->i_size;
186 f_pos = udf_ext0_offset(dir);
187
188 fibh->sbh = fibh->ebh = NULL;
189 fibh->soffset = fibh->eoffset = f_pos & (sb->s_blocksize - 1);
190 if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
191 if (inode_bmap(dir, f_pos >> sb->s_blocksize_bits, &epos,
192 &eloc, &elen, &offset) != (EXT_RECORDED_ALLOCATED >> 30)) {
193 fi = ERR_PTR(-EIO);
194 goto out_err;
195 }
196
197 block = udf_get_lb_pblock(sb, &eloc, offset);
198 if ((++offset << sb->s_blocksize_bits) < elen) {
199 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
200 epos.offset -= sizeof(struct short_ad);
201 else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
202 epos.offset -= sizeof(struct long_ad);
203 } else
204 offset = 0;
205
206 fibh->sbh = fibh->ebh = udf_tread(sb, block);
207 if (!fibh->sbh) {
208 fi = ERR_PTR(-EIO);
209 goto out_err;
210 }
211 }
212
213 fname = kmalloc(UDF_NAME_LEN, GFP_NOFS);
214 if (!fname) {
215 fi = ERR_PTR(-ENOMEM);
216 goto out_err;
217 }
218
219 while (f_pos < size) {
220 fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc,
221 &elen, &offset);
222 if (!fi) {
223 fi = ERR_PTR(-EIO);
224 goto out_err;
225 }
226
227 liu = le16_to_cpu(cfi->lengthOfImpUse);
228 lfi = cfi->lengthFileIdent;
229
230 if (fibh->sbh == fibh->ebh) {
231 nameptr = udf_get_fi_ident(fi);
232 } else {
233 int poffset;
234
235 poffset = fibh->soffset + sizeof(struct fileIdentDesc) +
236 liu + lfi;
237
238 if (poffset >= lfi)
239 nameptr = (uint8_t *)(fibh->ebh->b_data +
240 poffset - lfi);
241 else {
242 if (!copy_name) {
243 copy_name = kmalloc(UDF_NAME_LEN,
244 GFP_NOFS);
245 if (!copy_name) {
246 fi = ERR_PTR(-ENOMEM);
247 goto out_err;
248 }
249 }
250 nameptr = copy_name;
251 memcpy(nameptr, udf_get_fi_ident(fi),
252 lfi - poffset);
253 memcpy(nameptr + lfi - poffset,
254 fibh->ebh->b_data, poffset);
255 }
256 }
257
258 if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
259 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE))
260 continue;
261 }
262
263 if ((cfi->fileCharacteristics & FID_FILE_CHAR_HIDDEN) != 0) {
264 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
265 continue;
266 }
267
268 if ((cfi->fileCharacteristics & FID_FILE_CHAR_PARENT) &&
269 isdotdot)
270 goto out_ok;
271
272 if (!lfi)
273 continue;
274
275 flen = udf_get_filename(sb, nameptr, lfi, fname, UDF_NAME_LEN);
276 if (flen < 0) {
277 fi = ERR_PTR(flen);
278 goto out_err;
279 }
280
281 if (udf_match(flen, fname, child->len, child->name))
282 goto out_ok;
283 }
284
285 fi = NULL;
286out_err:
287 if (fibh->sbh != fibh->ebh)
288 brelse(fibh->ebh);
289 brelse(fibh->sbh);
290out_ok:
291 brelse(epos.bh);
292 kfree(fname);
293 kfree(copy_name);
294
295 return fi;
296}
297
298static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
299 unsigned int flags)
300{
301 struct inode *inode = NULL;
302 struct fileIdentDesc cfi;
303 struct udf_fileident_bh fibh;
304 struct fileIdentDesc *fi;
305
306 if (dentry->d_name.len > UDF_NAME_LEN)
307 return ERR_PTR(-ENAMETOOLONG);
308
309 fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
310 if (IS_ERR(fi))
311 return ERR_CAST(fi);
312
313 if (fi) {
314 struct kernel_lb_addr loc;
315
316 if (fibh.sbh != fibh.ebh)
317 brelse(fibh.ebh);
318 brelse(fibh.sbh);
319
320 loc = lelb_to_cpu(cfi.icb.extLocation);
321 inode = udf_iget(dir->i_sb, &loc);
322 if (IS_ERR(inode))
323 return ERR_CAST(inode);
324 }
325
326 return d_splice_alias(inode, dentry);
327}
328
329static struct fileIdentDesc *udf_add_entry(struct inode *dir,
330 struct dentry *dentry,
331 struct udf_fileident_bh *fibh,
332 struct fileIdentDesc *cfi, int *err)
333{
334 struct super_block *sb = dir->i_sb;
335 struct fileIdentDesc *fi = NULL;
336 unsigned char *name = NULL;
337 int namelen;
338 loff_t f_pos;
339 loff_t size = udf_ext0_offset(dir) + dir->i_size;
340 int nfidlen;
341 udf_pblk_t block;
342 struct kernel_lb_addr eloc;
343 uint32_t elen = 0;
344 sector_t offset;
345 struct extent_position epos = {};
346 struct udf_inode_info *dinfo;
347
348 fibh->sbh = fibh->ebh = NULL;
349 name = kmalloc(UDF_NAME_LEN_CS0, GFP_NOFS);
350 if (!name) {
351 *err = -ENOMEM;
352 goto out_err;
353 }
354
355 if (dentry) {
356 if (!dentry->d_name.len) {
357 *err = -EINVAL;
358 goto out_err;
359 }
360 namelen = udf_put_filename(sb, dentry->d_name.name,
361 dentry->d_name.len,
362 name, UDF_NAME_LEN_CS0);
363 if (!namelen) {
364 *err = -ENAMETOOLONG;
365 goto out_err;
366 }
367 } else {
368 namelen = 0;
369 }
370
371 nfidlen = ALIGN(sizeof(struct fileIdentDesc) + namelen, UDF_NAME_PAD);
372
373 f_pos = udf_ext0_offset(dir);
374
375 fibh->soffset = fibh->eoffset = f_pos & (dir->i_sb->s_blocksize - 1);
376 dinfo = UDF_I(dir);
377 if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
378 if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits, &epos,
379 &eloc, &elen, &offset) != (EXT_RECORDED_ALLOCATED >> 30)) {
380 block = udf_get_lb_pblock(dir->i_sb,
381 &dinfo->i_location, 0);
382 fibh->soffset = fibh->eoffset = sb->s_blocksize;
383 goto add;
384 }
385 block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
386 if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
387 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
388 epos.offset -= sizeof(struct short_ad);
389 else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
390 epos.offset -= sizeof(struct long_ad);
391 } else
392 offset = 0;
393
394 fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block);
395 if (!fibh->sbh) {
396 *err = -EIO;
397 goto out_err;
398 }
399
400 block = dinfo->i_location.logicalBlockNum;
401 }
402
403 while (f_pos < size) {
404 fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc,
405 &elen, &offset);
406
407 if (!fi) {
408 *err = -EIO;
409 goto out_err;
410 }
411
412 if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
413 if (udf_dir_entry_len(cfi) == nfidlen) {
414 cfi->descTag.tagSerialNum = cpu_to_le16(1);
415 cfi->fileVersionNum = cpu_to_le16(1);
416 cfi->fileCharacteristics = 0;
417 cfi->lengthFileIdent = namelen;
418 cfi->lengthOfImpUse = cpu_to_le16(0);
419 if (!udf_write_fi(dir, cfi, fi, fibh, NULL,
420 name))
421 goto out_ok;
422 else {
423 *err = -EIO;
424 goto out_err;
425 }
426 }
427 }
428 }
429
430add:
431 f_pos += nfidlen;
432
433 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB &&
434 sb->s_blocksize - fibh->eoffset < nfidlen) {
435 brelse(epos.bh);
436 epos.bh = NULL;
437 fibh->soffset -= udf_ext0_offset(dir);
438 fibh->eoffset -= udf_ext0_offset(dir);
439 f_pos -= udf_ext0_offset(dir);
440 if (fibh->sbh != fibh->ebh)
441 brelse(fibh->ebh);
442 brelse(fibh->sbh);
443 fibh->sbh = fibh->ebh =
444 udf_expand_dir_adinicb(dir, &block, err);
445 if (!fibh->sbh)
446 goto out_err;
447 epos.block = dinfo->i_location;
448 epos.offset = udf_file_entry_alloc_offset(dir);
449
450 udf_current_aext(dir, &epos, &eloc, &elen, 1);
451 }
452
453
454 if (sb->s_blocksize - fibh->eoffset >= nfidlen) {
455 fibh->soffset = fibh->eoffset;
456 fibh->eoffset += nfidlen;
457 if (fibh->sbh != fibh->ebh) {
458 brelse(fibh->sbh);
459 fibh->sbh = fibh->ebh;
460 }
461
462 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
463 block = dinfo->i_location.logicalBlockNum;
464 fi = (struct fileIdentDesc *)
465 (dinfo->i_data + fibh->soffset -
466 udf_ext0_offset(dir) +
467 dinfo->i_lenEAttr);
468 } else {
469 block = eloc.logicalBlockNum +
470 ((elen - 1) >>
471 dir->i_sb->s_blocksize_bits);
472 fi = (struct fileIdentDesc *)
473 (fibh->sbh->b_data + fibh->soffset);
474 }
475 } else {
476
477 elen = (elen + sb->s_blocksize - 1) & ~(sb->s_blocksize - 1);
478 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
479 epos.offset -= sizeof(struct short_ad);
480 else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
481 epos.offset -= sizeof(struct long_ad);
482 udf_write_aext(dir, &epos, &eloc, elen, 1);
483 dinfo->i_lenExtents = (dinfo->i_lenExtents + sb->s_blocksize
484 - 1) & ~(sb->s_blocksize - 1);
485
486 fibh->soffset = fibh->eoffset - sb->s_blocksize;
487 fibh->eoffset += nfidlen - sb->s_blocksize;
488 if (fibh->sbh != fibh->ebh) {
489 brelse(fibh->sbh);
490 fibh->sbh = fibh->ebh;
491 }
492
493 block = eloc.logicalBlockNum + ((elen - 1) >>
494 dir->i_sb->s_blocksize_bits);
495 fibh->ebh = udf_bread(dir,
496 f_pos >> dir->i_sb->s_blocksize_bits, 1, err);
497 if (!fibh->ebh)
498 goto out_err;
499
500 brelse(epos.bh);
501 epos.bh = NULL;
502 epos.block = dinfo->i_location;
503 epos.offset = udf_file_entry_alloc_offset(dir);
504
505 if (!fibh->soffset) {
506
507 while (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
508 (EXT_RECORDED_ALLOCATED >> 30))
509 ;
510 block = eloc.logicalBlockNum + ((elen - 1) >>
511 dir->i_sb->s_blocksize_bits);
512 brelse(fibh->sbh);
513 fibh->sbh = fibh->ebh;
514 fi = (struct fileIdentDesc *)(fibh->sbh->b_data);
515 } else {
516 fi = (struct fileIdentDesc *)
517 (fibh->sbh->b_data + sb->s_blocksize +
518 fibh->soffset);
519 }
520 }
521
522 memset(cfi, 0, sizeof(struct fileIdentDesc));
523 if (UDF_SB(sb)->s_udfrev >= 0x0200)
524 udf_new_tag((char *)cfi, TAG_IDENT_FID, 3, 1, block,
525 sizeof(struct tag));
526 else
527 udf_new_tag((char *)cfi, TAG_IDENT_FID, 2, 1, block,
528 sizeof(struct tag));
529 cfi->fileVersionNum = cpu_to_le16(1);
530 cfi->lengthFileIdent = namelen;
531 cfi->lengthOfImpUse = cpu_to_le16(0);
532 if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) {
533 dir->i_size += nfidlen;
534 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
535 dinfo->i_lenAlloc += nfidlen;
536 else {
537
538 while (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
539 (EXT_RECORDED_ALLOCATED >> 30))
540 ;
541 elen -= dinfo->i_lenExtents - dir->i_size;
542 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
543 epos.offset -= sizeof(struct short_ad);
544 else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
545 epos.offset -= sizeof(struct long_ad);
546 udf_write_aext(dir, &epos, &eloc, elen, 1);
547 dinfo->i_lenExtents = dir->i_size;
548 }
549
550 mark_inode_dirty(dir);
551 goto out_ok;
552 } else {
553 *err = -EIO;
554 goto out_err;
555 }
556
557out_err:
558 fi = NULL;
559 if (fibh->sbh != fibh->ebh)
560 brelse(fibh->ebh);
561 brelse(fibh->sbh);
562out_ok:
563 brelse(epos.bh);
564 kfree(name);
565 return fi;
566}
567
568static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi,
569 struct udf_fileident_bh *fibh,
570 struct fileIdentDesc *cfi)
571{
572 cfi->fileCharacteristics |= FID_FILE_CHAR_DELETED;
573
574 if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT))
575 memset(&(cfi->icb), 0x00, sizeof(struct long_ad));
576
577 return udf_write_fi(inode, cfi, fi, fibh, NULL, NULL);
578}
579
580static int udf_add_nondir(struct dentry *dentry, struct inode *inode)
581{
582 struct udf_inode_info *iinfo = UDF_I(inode);
583 struct inode *dir = d_inode(dentry->d_parent);
584 struct udf_fileident_bh fibh;
585 struct fileIdentDesc cfi, *fi;
586 int err;
587
588 fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
589 if (unlikely(!fi)) {
590 inode_dec_link_count(inode);
591 discard_new_inode(inode);
592 return err;
593 }
594 cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
595 cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
596 *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
597 cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL);
598 udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
599 dir->i_ctime = dir->i_mtime = current_time(dir);
600 mark_inode_dirty(dir);
601 if (fibh.sbh != fibh.ebh)
602 brelse(fibh.ebh);
603 brelse(fibh.sbh);
604 d_instantiate_new(dentry, inode);
605
606 return 0;
607}
608
609static int udf_create(struct user_namespace *mnt_userns, struct inode *dir,
610 struct dentry *dentry, umode_t mode, bool excl)
611{
612 struct inode *inode = udf_new_inode(dir, mode);
613
614 if (IS_ERR(inode))
615 return PTR_ERR(inode);
616
617 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
618 inode->i_data.a_ops = &udf_adinicb_aops;
619 else
620 inode->i_data.a_ops = &udf_aops;
621 inode->i_op = &udf_file_inode_operations;
622 inode->i_fop = &udf_file_operations;
623 mark_inode_dirty(inode);
624
625 return udf_add_nondir(dentry, inode);
626}
627
628static int udf_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
629 struct dentry *dentry, umode_t mode)
630{
631 struct inode *inode = udf_new_inode(dir, mode);
632
633 if (IS_ERR(inode))
634 return PTR_ERR(inode);
635
636 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
637 inode->i_data.a_ops = &udf_adinicb_aops;
638 else
639 inode->i_data.a_ops = &udf_aops;
640 inode->i_op = &udf_file_inode_operations;
641 inode->i_fop = &udf_file_operations;
642 mark_inode_dirty(inode);
643 d_tmpfile(dentry, inode);
644 unlock_new_inode(inode);
645 return 0;
646}
647
648static int udf_mknod(struct user_namespace *mnt_userns, struct inode *dir,
649 struct dentry *dentry, umode_t mode, dev_t rdev)
650{
651 struct inode *inode;
652
653 if (!old_valid_dev(rdev))
654 return -EINVAL;
655
656 inode = udf_new_inode(dir, mode);
657 if (IS_ERR(inode))
658 return PTR_ERR(inode);
659
660 init_special_inode(inode, mode, rdev);
661 return udf_add_nondir(dentry, inode);
662}
663
664static int udf_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
665 struct dentry *dentry, umode_t mode)
666{
667 struct inode *inode;
668 struct udf_fileident_bh fibh;
669 struct fileIdentDesc cfi, *fi;
670 int err;
671 struct udf_inode_info *dinfo = UDF_I(dir);
672 struct udf_inode_info *iinfo;
673
674 inode = udf_new_inode(dir, S_IFDIR | mode);
675 if (IS_ERR(inode))
676 return PTR_ERR(inode);
677
678 iinfo = UDF_I(inode);
679 inode->i_op = &udf_dir_inode_operations;
680 inode->i_fop = &udf_dir_operations;
681 fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err);
682 if (!fi) {
683 inode_dec_link_count(inode);
684 discard_new_inode(inode);
685 goto out;
686 }
687 set_nlink(inode, 2);
688 cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
689 cfi.icb.extLocation = cpu_to_lelb(dinfo->i_location);
690 *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
691 cpu_to_le32(dinfo->i_unique & 0x00000000FFFFFFFFUL);
692 cfi.fileCharacteristics =
693 FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT;
694 udf_write_fi(inode, &cfi, fi, &fibh, NULL, NULL);
695 brelse(fibh.sbh);
696 mark_inode_dirty(inode);
697
698 fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
699 if (!fi) {
700 clear_nlink(inode);
701 mark_inode_dirty(inode);
702 discard_new_inode(inode);
703 goto out;
704 }
705 cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
706 cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
707 *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
708 cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL);
709 cfi.fileCharacteristics |= FID_FILE_CHAR_DIRECTORY;
710 udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
711 inc_nlink(dir);
712 dir->i_ctime = dir->i_mtime = current_time(dir);
713 mark_inode_dirty(dir);
714 d_instantiate_new(dentry, inode);
715 if (fibh.sbh != fibh.ebh)
716 brelse(fibh.ebh);
717 brelse(fibh.sbh);
718 err = 0;
719
720out:
721 return err;
722}
723
724static int empty_dir(struct inode *dir)
725{
726 struct fileIdentDesc *fi, cfi;
727 struct udf_fileident_bh fibh;
728 loff_t f_pos;
729 loff_t size = udf_ext0_offset(dir) + dir->i_size;
730 udf_pblk_t block;
731 struct kernel_lb_addr eloc;
732 uint32_t elen;
733 sector_t offset;
734 struct extent_position epos = {};
735 struct udf_inode_info *dinfo = UDF_I(dir);
736
737 f_pos = udf_ext0_offset(dir);
738 fibh.soffset = fibh.eoffset = f_pos & (dir->i_sb->s_blocksize - 1);
739
740 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
741 fibh.sbh = fibh.ebh = NULL;
742 else if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits,
743 &epos, &eloc, &elen, &offset) ==
744 (EXT_RECORDED_ALLOCATED >> 30)) {
745 block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
746 if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
747 if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
748 epos.offset -= sizeof(struct short_ad);
749 else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
750 epos.offset -= sizeof(struct long_ad);
751 } else
752 offset = 0;
753
754 fibh.sbh = fibh.ebh = udf_tread(dir->i_sb, block);
755 if (!fibh.sbh) {
756 brelse(epos.bh);
757 return 0;
758 }
759 } else {
760 brelse(epos.bh);
761 return 0;
762 }
763
764 while (f_pos < size) {
765 fi = udf_fileident_read(dir, &f_pos, &fibh, &cfi, &epos, &eloc,
766 &elen, &offset);
767 if (!fi) {
768 if (fibh.sbh != fibh.ebh)
769 brelse(fibh.ebh);
770 brelse(fibh.sbh);
771 brelse(epos.bh);
772 return 0;
773 }
774
775 if (cfi.lengthFileIdent &&
776 (cfi.fileCharacteristics & FID_FILE_CHAR_DELETED) == 0) {
777 if (fibh.sbh != fibh.ebh)
778 brelse(fibh.ebh);
779 brelse(fibh.sbh);
780 brelse(epos.bh);
781 return 0;
782 }
783 }
784
785 if (fibh.sbh != fibh.ebh)
786 brelse(fibh.ebh);
787 brelse(fibh.sbh);
788 brelse(epos.bh);
789
790 return 1;
791}
792
793static int udf_rmdir(struct inode *dir, struct dentry *dentry)
794{
795 int retval;
796 struct inode *inode = d_inode(dentry);
797 struct udf_fileident_bh fibh;
798 struct fileIdentDesc *fi, cfi;
799 struct kernel_lb_addr tloc;
800
801 retval = -ENOENT;
802 fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
803 if (IS_ERR_OR_NULL(fi)) {
804 if (fi)
805 retval = PTR_ERR(fi);
806 goto out;
807 }
808
809 retval = -EIO;
810 tloc = lelb_to_cpu(cfi.icb.extLocation);
811 if (udf_get_lb_pblock(dir->i_sb, &tloc, 0) != inode->i_ino)
812 goto end_rmdir;
813 retval = -ENOTEMPTY;
814 if (!empty_dir(inode))
815 goto end_rmdir;
816 retval = udf_delete_entry(dir, fi, &fibh, &cfi);
817 if (retval)
818 goto end_rmdir;
819 if (inode->i_nlink != 2)
820 udf_warn(inode->i_sb, "empty directory has nlink != 2 (%u)\n",
821 inode->i_nlink);
822 clear_nlink(inode);
823 inode->i_size = 0;
824 inode_dec_link_count(dir);
825 inode->i_ctime = dir->i_ctime = dir->i_mtime =
826 current_time(inode);
827 mark_inode_dirty(dir);
828
829end_rmdir:
830 if (fibh.sbh != fibh.ebh)
831 brelse(fibh.ebh);
832 brelse(fibh.sbh);
833
834out:
835 return retval;
836}
837
838static int udf_unlink(struct inode *dir, struct dentry *dentry)
839{
840 int retval;
841 struct inode *inode = d_inode(dentry);
842 struct udf_fileident_bh fibh;
843 struct fileIdentDesc *fi;
844 struct fileIdentDesc cfi;
845 struct kernel_lb_addr tloc;
846
847 retval = -ENOENT;
848 fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
849
850 if (IS_ERR_OR_NULL(fi)) {
851 if (fi)
852 retval = PTR_ERR(fi);
853 goto out;
854 }
855
856 retval = -EIO;
857 tloc = lelb_to_cpu(cfi.icb.extLocation);
858 if (udf_get_lb_pblock(dir->i_sb, &tloc, 0) != inode->i_ino)
859 goto end_unlink;
860
861 if (!inode->i_nlink) {
862 udf_debug("Deleting nonexistent file (%lu), %u\n",
863 inode->i_ino, inode->i_nlink);
864 set_nlink(inode, 1);
865 }
866 retval = udf_delete_entry(dir, fi, &fibh, &cfi);
867 if (retval)
868 goto end_unlink;
869 dir->i_ctime = dir->i_mtime = current_time(dir);
870 mark_inode_dirty(dir);
871 inode_dec_link_count(inode);
872 inode->i_ctime = dir->i_ctime;
873 retval = 0;
874
875end_unlink:
876 if (fibh.sbh != fibh.ebh)
877 brelse(fibh.ebh);
878 brelse(fibh.sbh);
879
880out:
881 return retval;
882}
883
884static int udf_symlink(struct user_namespace *mnt_userns, struct inode *dir,
885 struct dentry *dentry, const char *symname)
886{
887 struct inode *inode = udf_new_inode(dir, S_IFLNK | 0777);
888 struct pathComponent *pc;
889 const char *compstart;
890 struct extent_position epos = {};
891 int eoffset, elen = 0;
892 uint8_t *ea;
893 int err;
894 udf_pblk_t block;
895 unsigned char *name = NULL;
896 int namelen;
897 struct udf_inode_info *iinfo;
898 struct super_block *sb = dir->i_sb;
899
900 if (IS_ERR(inode))
901 return PTR_ERR(inode);
902
903 iinfo = UDF_I(inode);
904 down_write(&iinfo->i_data_sem);
905 name = kmalloc(UDF_NAME_LEN_CS0, GFP_NOFS);
906 if (!name) {
907 err = -ENOMEM;
908 goto out_no_entry;
909 }
910
911 inode->i_data.a_ops = &udf_symlink_aops;
912 inode->i_op = &udf_symlink_inode_operations;
913 inode_nohighmem(inode);
914
915 if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
916 struct kernel_lb_addr eloc;
917 uint32_t bsize;
918
919 block = udf_new_block(sb, inode,
920 iinfo->i_location.partitionReferenceNum,
921 iinfo->i_location.logicalBlockNum, &err);
922 if (!block)
923 goto out_no_entry;
924 epos.block = iinfo->i_location;
925 epos.offset = udf_file_entry_alloc_offset(inode);
926 epos.bh = NULL;
927 eloc.logicalBlockNum = block;
928 eloc.partitionReferenceNum =
929 iinfo->i_location.partitionReferenceNum;
930 bsize = sb->s_blocksize;
931 iinfo->i_lenExtents = bsize;
932 udf_add_aext(inode, &epos, &eloc, bsize, 0);
933 brelse(epos.bh);
934
935 block = udf_get_pblock(sb, block,
936 iinfo->i_location.partitionReferenceNum,
937 0);
938 epos.bh = udf_tgetblk(sb, block);
939 if (unlikely(!epos.bh)) {
940 err = -ENOMEM;
941 goto out_no_entry;
942 }
943 lock_buffer(epos.bh);
944 memset(epos.bh->b_data, 0x00, bsize);
945 set_buffer_uptodate(epos.bh);
946 unlock_buffer(epos.bh);
947 mark_buffer_dirty_inode(epos.bh, inode);
948 ea = epos.bh->b_data + udf_ext0_offset(inode);
949 } else
950 ea = iinfo->i_data + iinfo->i_lenEAttr;
951
952 eoffset = sb->s_blocksize - udf_ext0_offset(inode);
953 pc = (struct pathComponent *)ea;
954
955 if (*symname == '/') {
956 do {
957 symname++;
958 } while (*symname == '/');
959
960 pc->componentType = 1;
961 pc->lengthComponentIdent = 0;
962 pc->componentFileVersionNum = 0;
963 elen += sizeof(struct pathComponent);
964 }
965
966 err = -ENAMETOOLONG;
967
968 while (*symname) {
969 if (elen + sizeof(struct pathComponent) > eoffset)
970 goto out_no_entry;
971
972 pc = (struct pathComponent *)(ea + elen);
973
974 compstart = symname;
975
976 do {
977 symname++;
978 } while (*symname && *symname != '/');
979
980 pc->componentType = 5;
981 pc->lengthComponentIdent = 0;
982 pc->componentFileVersionNum = 0;
983 if (compstart[0] == '.') {
984 if ((symname - compstart) == 1)
985 pc->componentType = 4;
986 else if ((symname - compstart) == 2 &&
987 compstart[1] == '.')
988 pc->componentType = 3;
989 }
990
991 if (pc->componentType == 5) {
992 namelen = udf_put_filename(sb, compstart,
993 symname - compstart,
994 name, UDF_NAME_LEN_CS0);
995 if (!namelen)
996 goto out_no_entry;
997
998 if (elen + sizeof(struct pathComponent) + namelen >
999 eoffset)
1000 goto out_no_entry;
1001 else
1002 pc->lengthComponentIdent = namelen;
1003
1004 memcpy(pc->componentIdent, name, namelen);
1005 }
1006
1007 elen += sizeof(struct pathComponent) + pc->lengthComponentIdent;
1008
1009 if (*symname) {
1010 do {
1011 symname++;
1012 } while (*symname == '/');
1013 }
1014 }
1015
1016 brelse(epos.bh);
1017 inode->i_size = elen;
1018 if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
1019 iinfo->i_lenAlloc = inode->i_size;
1020 else
1021 udf_truncate_tail_extent(inode);
1022 mark_inode_dirty(inode);
1023 up_write(&iinfo->i_data_sem);
1024
1025 err = udf_add_nondir(dentry, inode);
1026out:
1027 kfree(name);
1028 return err;
1029
1030out_no_entry:
1031 up_write(&iinfo->i_data_sem);
1032 inode_dec_link_count(inode);
1033 discard_new_inode(inode);
1034 goto out;
1035}
1036
1037static int udf_link(struct dentry *old_dentry, struct inode *dir,
1038 struct dentry *dentry)
1039{
1040 struct inode *inode = d_inode(old_dentry);
1041 struct udf_fileident_bh fibh;
1042 struct fileIdentDesc cfi, *fi;
1043 int err;
1044
1045 fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
1046 if (!fi) {
1047 return err;
1048 }
1049 cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
1050 cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
1051 if (UDF_SB(inode->i_sb)->s_lvid_bh) {
1052 *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
1053 cpu_to_le32(lvid_get_unique_id(inode->i_sb));
1054 }
1055 udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
1056 if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
1057 mark_inode_dirty(dir);
1058
1059 if (fibh.sbh != fibh.ebh)
1060 brelse(fibh.ebh);
1061 brelse(fibh.sbh);
1062 inc_nlink(inode);
1063 inode->i_ctime = current_time(inode);
1064 mark_inode_dirty(inode);
1065 dir->i_ctime = dir->i_mtime = current_time(dir);
1066 mark_inode_dirty(dir);
1067 ihold(inode);
1068 d_instantiate(dentry, inode);
1069
1070 return 0;
1071}
1072
1073
1074
1075
1076static int udf_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
1077 struct dentry *old_dentry, struct inode *new_dir,
1078 struct dentry *new_dentry, unsigned int flags)
1079{
1080 struct inode *old_inode = d_inode(old_dentry);
1081 struct inode *new_inode = d_inode(new_dentry);
1082 struct udf_fileident_bh ofibh, nfibh;
1083 struct fileIdentDesc *ofi = NULL, *nfi = NULL, *dir_fi = NULL;
1084 struct fileIdentDesc ocfi, ncfi;
1085 struct buffer_head *dir_bh = NULL;
1086 int retval = -ENOENT;
1087 struct kernel_lb_addr tloc;
1088 struct udf_inode_info *old_iinfo = UDF_I(old_inode);
1089
1090 if (flags & ~RENAME_NOREPLACE)
1091 return -EINVAL;
1092
1093 ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
1094 if (IS_ERR(ofi)) {
1095 retval = PTR_ERR(ofi);
1096 goto end_rename;
1097 }
1098
1099 if (ofibh.sbh != ofibh.ebh)
1100 brelse(ofibh.ebh);
1101
1102 brelse(ofibh.sbh);
1103 tloc = lelb_to_cpu(ocfi.icb.extLocation);
1104 if (!ofi || udf_get_lb_pblock(old_dir->i_sb, &tloc, 0)
1105 != old_inode->i_ino)
1106 goto end_rename;
1107
1108 nfi = udf_find_entry(new_dir, &new_dentry->d_name, &nfibh, &ncfi);
1109 if (IS_ERR(nfi)) {
1110 retval = PTR_ERR(nfi);
1111 goto end_rename;
1112 }
1113 if (nfi && !new_inode) {
1114 if (nfibh.sbh != nfibh.ebh)
1115 brelse(nfibh.ebh);
1116 brelse(nfibh.sbh);
1117 nfi = NULL;
1118 }
1119 if (S_ISDIR(old_inode->i_mode)) {
1120 int offset = udf_ext0_offset(old_inode);
1121
1122 if (new_inode) {
1123 retval = -ENOTEMPTY;
1124 if (!empty_dir(new_inode))
1125 goto end_rename;
1126 }
1127 retval = -EIO;
1128 if (old_iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
1129 dir_fi = udf_get_fileident(
1130 old_iinfo->i_data -
1131 (old_iinfo->i_efe ?
1132 sizeof(struct extendedFileEntry) :
1133 sizeof(struct fileEntry)),
1134 old_inode->i_sb->s_blocksize, &offset);
1135 } else {
1136 dir_bh = udf_bread(old_inode, 0, 0, &retval);
1137 if (!dir_bh)
1138 goto end_rename;
1139 dir_fi = udf_get_fileident(dir_bh->b_data,
1140 old_inode->i_sb->s_blocksize, &offset);
1141 }
1142 if (!dir_fi)
1143 goto end_rename;
1144 tloc = lelb_to_cpu(dir_fi->icb.extLocation);
1145 if (udf_get_lb_pblock(old_inode->i_sb, &tloc, 0) !=
1146 old_dir->i_ino)
1147 goto end_rename;
1148 }
1149 if (!nfi) {
1150 nfi = udf_add_entry(new_dir, new_dentry, &nfibh, &ncfi,
1151 &retval);
1152 if (!nfi)
1153 goto end_rename;
1154 }
1155
1156
1157
1158
1159
1160 old_inode->i_ctime = current_time(old_inode);
1161 mark_inode_dirty(old_inode);
1162
1163
1164
1165
1166 ncfi.fileVersionNum = ocfi.fileVersionNum;
1167 ncfi.fileCharacteristics = ocfi.fileCharacteristics;
1168 memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(ocfi.icb));
1169 udf_write_fi(new_dir, &ncfi, nfi, &nfibh, NULL, NULL);
1170
1171
1172 ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
1173 udf_delete_entry(old_dir, ofi, &ofibh, &ocfi);
1174
1175 if (new_inode) {
1176 new_inode->i_ctime = current_time(new_inode);
1177 inode_dec_link_count(new_inode);
1178 }
1179 old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
1180 new_dir->i_ctime = new_dir->i_mtime = current_time(new_dir);
1181 mark_inode_dirty(old_dir);
1182 mark_inode_dirty(new_dir);
1183
1184 if (dir_fi) {
1185 dir_fi->icb.extLocation = cpu_to_lelb(UDF_I(new_dir)->i_location);
1186 udf_update_tag((char *)dir_fi, udf_dir_entry_len(dir_fi));
1187 if (old_iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
1188 mark_inode_dirty(old_inode);
1189 else
1190 mark_buffer_dirty_inode(dir_bh, old_inode);
1191
1192 inode_dec_link_count(old_dir);
1193 if (new_inode)
1194 inode_dec_link_count(new_inode);
1195 else {
1196 inc_nlink(new_dir);
1197 mark_inode_dirty(new_dir);
1198 }
1199 }
1200
1201 if (ofi) {
1202 if (ofibh.sbh != ofibh.ebh)
1203 brelse(ofibh.ebh);
1204 brelse(ofibh.sbh);
1205 }
1206
1207 retval = 0;
1208
1209end_rename:
1210 brelse(dir_bh);
1211 if (nfi) {
1212 if (nfibh.sbh != nfibh.ebh)
1213 brelse(nfibh.ebh);
1214 brelse(nfibh.sbh);
1215 }
1216
1217 return retval;
1218}
1219
1220static struct dentry *udf_get_parent(struct dentry *child)
1221{
1222 struct kernel_lb_addr tloc;
1223 struct inode *inode = NULL;
1224 struct fileIdentDesc cfi;
1225 struct udf_fileident_bh fibh;
1226
1227 if (!udf_find_entry(d_inode(child), &dotdot_name, &fibh, &cfi))
1228 return ERR_PTR(-EACCES);
1229
1230 if (fibh.sbh != fibh.ebh)
1231 brelse(fibh.ebh);
1232 brelse(fibh.sbh);
1233
1234 tloc = lelb_to_cpu(cfi.icb.extLocation);
1235 inode = udf_iget(child->d_sb, &tloc);
1236 if (IS_ERR(inode))
1237 return ERR_CAST(inode);
1238
1239 return d_obtain_alias(inode);
1240}
1241
1242
1243static struct dentry *udf_nfs_get_inode(struct super_block *sb, u32 block,
1244 u16 partref, __u32 generation)
1245{
1246 struct inode *inode;
1247 struct kernel_lb_addr loc;
1248
1249 if (block == 0)
1250 return ERR_PTR(-ESTALE);
1251
1252 loc.logicalBlockNum = block;
1253 loc.partitionReferenceNum = partref;
1254 inode = udf_iget(sb, &loc);
1255
1256 if (IS_ERR(inode))
1257 return ERR_CAST(inode);
1258
1259 if (generation && inode->i_generation != generation) {
1260 iput(inode);
1261 return ERR_PTR(-ESTALE);
1262 }
1263 return d_obtain_alias(inode);
1264}
1265
1266static struct dentry *udf_fh_to_dentry(struct super_block *sb,
1267 struct fid *fid, int fh_len, int fh_type)
1268{
1269 if (fh_len < 3 ||
1270 (fh_type != FILEID_UDF_WITH_PARENT &&
1271 fh_type != FILEID_UDF_WITHOUT_PARENT))
1272 return NULL;
1273
1274 return udf_nfs_get_inode(sb, fid->udf.block, fid->udf.partref,
1275 fid->udf.generation);
1276}
1277
1278static struct dentry *udf_fh_to_parent(struct super_block *sb,
1279 struct fid *fid, int fh_len, int fh_type)
1280{
1281 if (fh_len < 5 || fh_type != FILEID_UDF_WITH_PARENT)
1282 return NULL;
1283
1284 return udf_nfs_get_inode(sb, fid->udf.parent_block,
1285 fid->udf.parent_partref,
1286 fid->udf.parent_generation);
1287}
1288static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
1289 struct inode *parent)
1290{
1291 int len = *lenp;
1292 struct kernel_lb_addr location = UDF_I(inode)->i_location;
1293 struct fid *fid = (struct fid *)fh;
1294 int type = FILEID_UDF_WITHOUT_PARENT;
1295
1296 if (parent && (len < 5)) {
1297 *lenp = 5;
1298 return FILEID_INVALID;
1299 } else if (len < 3) {
1300 *lenp = 3;
1301 return FILEID_INVALID;
1302 }
1303
1304 *lenp = 3;
1305 fid->udf.block = location.logicalBlockNum;
1306 fid->udf.partref = location.partitionReferenceNum;
1307 fid->udf.parent_partref = 0;
1308 fid->udf.generation = inode->i_generation;
1309
1310 if (parent) {
1311 location = UDF_I(parent)->i_location;
1312 fid->udf.parent_block = location.logicalBlockNum;
1313 fid->udf.parent_partref = location.partitionReferenceNum;
1314 fid->udf.parent_generation = inode->i_generation;
1315 *lenp = 5;
1316 type = FILEID_UDF_WITH_PARENT;
1317 }
1318
1319 return type;
1320}
1321
1322const struct export_operations udf_export_ops = {
1323 .encode_fh = udf_encode_fh,
1324 .fh_to_dentry = udf_fh_to_dentry,
1325 .fh_to_parent = udf_fh_to_parent,
1326 .get_parent = udf_get_parent,
1327};
1328
1329const struct inode_operations udf_dir_inode_operations = {
1330 .lookup = udf_lookup,
1331 .create = udf_create,
1332 .link = udf_link,
1333 .unlink = udf_unlink,
1334 .symlink = udf_symlink,
1335 .mkdir = udf_mkdir,
1336 .rmdir = udf_rmdir,
1337 .mknod = udf_mknod,
1338 .rename = udf_rename,
1339 .tmpfile = udf_tmpfile,
1340};
1341
