2 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
4 * Trivial changes by Alan Cox to remove EHASHCOLLISION for compatibility
7 * Rights granted to Hans Reiser to redistribute under other terms providing
8 * he accepts all liability including but not limited to patent, fitness
9 * for purpose, and direct or indirect claims arising from failure to perform.
14 #include <linux/time.h>
15 #include <linux/bitops.h>
16 #include <linux/slab.h>
20 #include <linux/quotaops.h>
22 #define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) set_nlink(i, 1); }
23 #define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) drop_nlink(i);
26 * directory item contains array of entry headers. This performs
27 * binary search through that array
29 static int bin_search_in_dir_item(struct reiserfs_dir_entry
*de
, loff_t off
)
31 struct item_head
*ih
= de
->de_ih
;
32 struct reiserfs_de_head
*deh
= de
->de_deh
;
33 int rbound
, lbound
, j
;
36 rbound
= ih_entry_count(ih
) - 1;
38 for (j
= (rbound
+ lbound
) / 2; lbound
<= rbound
;
39 j
= (rbound
+ lbound
) / 2) {
40 if (off
< deh_offset(deh
+ j
)) {
44 if (off
> deh_offset(deh
+ j
)) {
48 /* this is not name found, but matched third key component */
53 de
->de_entry_num
= lbound
;
54 return NAME_NOT_FOUND
;
58 * comment? maybe something like set de to point to what the path points to?
60 static inline void set_de_item_location(struct reiserfs_dir_entry
*de
,
61 struct treepath
*path
)
63 de
->de_bh
= get_last_bh(path
);
64 de
->de_ih
= tp_item_head(path
);
65 de
->de_deh
= B_I_DEH(de
->de_bh
, de
->de_ih
);
66 de
->de_item_num
= PATH_LAST_POSITION(path
);
70 * de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
72 inline void set_de_name_and_namelen(struct reiserfs_dir_entry
*de
)
74 struct reiserfs_de_head
*deh
= de
->de_deh
+ de
->de_entry_num
;
76 BUG_ON(de
->de_entry_num
>= ih_entry_count(de
->de_ih
));
78 de
->de_entrylen
= entry_length(de
->de_bh
, de
->de_ih
, de
->de_entry_num
);
79 de
->de_namelen
= de
->de_entrylen
- (de_with_sd(deh
) ? SD_SIZE
: 0);
80 de
->de_name
= ih_item_body(de
->de_bh
, de
->de_ih
) + deh_location(deh
);
81 if (de
->de_name
[de
->de_namelen
- 1] == 0)
82 de
->de_namelen
= strlen(de
->de_name
);
85 /* what entry points to */
86 static inline void set_de_object_key(struct reiserfs_dir_entry
*de
)
88 BUG_ON(de
->de_entry_num
>= ih_entry_count(de
->de_ih
));
89 de
->de_dir_id
= deh_dir_id(&de
->de_deh
[de
->de_entry_num
]);
90 de
->de_objectid
= deh_objectid(&de
->de_deh
[de
->de_entry_num
]);
93 static inline void store_de_entry_key(struct reiserfs_dir_entry
*de
)
95 struct reiserfs_de_head
*deh
= de
->de_deh
+ de
->de_entry_num
;
97 BUG_ON(de
->de_entry_num
>= ih_entry_count(de
->de_ih
));
99 /* store key of the found entry */
100 de
->de_entry_key
.version
= KEY_FORMAT_3_5
;
101 de
->de_entry_key
.on_disk_key
.k_dir_id
=
102 le32_to_cpu(de
->de_ih
->ih_key
.k_dir_id
);
103 de
->de_entry_key
.on_disk_key
.k_objectid
=
104 le32_to_cpu(de
->de_ih
->ih_key
.k_objectid
);
105 set_cpu_key_k_offset(&de
->de_entry_key
, deh_offset(deh
));
106 set_cpu_key_k_type(&de
->de_entry_key
, TYPE_DIRENTRY
);
110 * We assign a key to each directory item, and place multiple entries in a
111 * single directory item. A directory item has a key equal to the key of
112 * the first directory entry in it.
114 * This function first calls search_by_key, then, if item whose first entry
115 * matches is not found it looks for the entry inside directory item found
116 * by search_by_key. Fills the path to the entry, and to the entry position
119 /* The function is NOT SCHEDULE-SAFE! */
120 int search_by_entry_key(struct super_block
*sb
, const struct cpu_key
*key
,
121 struct treepath
*path
, struct reiserfs_dir_entry
*de
)
125 retval
= search_item(sb
, key
, path
);
128 if (!PATH_LAST_POSITION(path
)) {
129 reiserfs_error(sb
, "vs-7000", "search_by_key "
130 "returned item position == 0");
134 PATH_LAST_POSITION(path
)--;
144 reiserfs_error(sb
, "vs-7002", "no path to here");
148 set_de_item_location(de
, path
);
150 #ifdef CONFIG_REISERFS_CHECK
151 if (!is_direntry_le_ih(de
->de_ih
) ||
152 COMP_SHORT_KEYS(&de
->de_ih
->ih_key
, key
)) {
153 print_block(de
->de_bh
, 0, -1, -1);
154 reiserfs_panic(sb
, "vs-7005", "found item %h is not directory "
155 "item or does not belong to the same directory "
156 "as key %K", de
->de_ih
, key
);
158 #endif /* CONFIG_REISERFS_CHECK */
161 * binary search in directory item by third component of the
162 * key. sets de->de_entry_num of de
164 retval
= bin_search_in_dir_item(de
, cpu_key_k_offset(key
));
165 path
->pos_in_item
= de
->de_entry_num
;
166 if (retval
!= NAME_NOT_FOUND
) {
168 * ugly, but rename needs de_bh, de_deh, de_name,
169 * de_namelen, de_objectid set
171 set_de_name_and_namelen(de
);
172 set_de_object_key(de
);
177 /* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
180 * The third component is hashed, and you can choose from more than
181 * one hash function. Per directory hashes are not yet implemented
182 * but are thought about. This function should be moved to hashes.c
183 * Jedi, please do so. -Hans
185 static __u32
get_third_component(struct super_block
*s
,
186 const char *name
, int len
)
190 if (!len
|| (len
== 1 && name
[0] == '.'))
192 if (len
== 2 && name
[0] == '.' && name
[1] == '.')
193 return DOT_DOT_OFFSET
;
195 res
= REISERFS_SB(s
)->s_hash_function(name
, len
);
197 /* take bits from 7-th to 30-th including both bounds */
198 res
= GET_HASH_VALUE(res
);
201 * needed to have no names before "." and ".." those have hash
202 * value == 0 and generation conters 1 and 2 accordingly
205 return res
+ MAX_GENERATION_NUMBER
;
208 static int reiserfs_match(struct reiserfs_dir_entry
*de
,
209 const char *name
, int namelen
)
211 int retval
= NAME_NOT_FOUND
;
213 if ((namelen
== de
->de_namelen
) &&
214 !memcmp(de
->de_name
, name
, de
->de_namelen
))
216 (de_visible(de
->de_deh
+ de
->de_entry_num
) ? NAME_FOUND
:
217 NAME_FOUND_INVISIBLE
);
222 /* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
224 /* used when hash collisions exist */
226 static int linear_search_in_dir_item(struct cpu_key
*key
,
227 struct reiserfs_dir_entry
*de
,
228 const char *name
, int namelen
)
230 struct reiserfs_de_head
*deh
= de
->de_deh
;
234 i
= de
->de_entry_num
;
236 if (i
== ih_entry_count(de
->de_ih
) ||
237 GET_HASH_VALUE(deh_offset(deh
+ i
)) !=
238 GET_HASH_VALUE(cpu_key_k_offset(key
))) {
242 RFALSE(de
->de_deh
!= B_I_DEH(de
->de_bh
, de
->de_ih
),
243 "vs-7010: array of entry headers not found");
247 for (; i
>= 0; i
--, deh
--) {
248 /* hash value does not match, no need to check whole name */
249 if (GET_HASH_VALUE(deh_offset(deh
)) !=
250 GET_HASH_VALUE(cpu_key_k_offset(key
))) {
251 return NAME_NOT_FOUND
;
254 /* mark that this generation number is used */
255 if (de
->de_gen_number_bit_string
)
256 set_bit(GET_GENERATION_NUMBER(deh_offset(deh
)),
257 de
->de_gen_number_bit_string
);
259 /* calculate pointer to name and namelen */
260 de
->de_entry_num
= i
;
261 set_de_name_and_namelen(de
);
264 * de's de_name, de_namelen, de_recordlen are set.
268 reiserfs_match(de
, name
, namelen
)) != NAME_NOT_FOUND
) {
270 /* key of pointed object */
271 set_de_object_key(de
);
273 store_de_entry_key(de
);
275 /* retval can be NAME_FOUND or NAME_FOUND_INVISIBLE */
280 if (GET_GENERATION_NUMBER(le_ih_k_offset(de
->de_ih
)) == 0)
282 * we have reached left most entry in the node. In common we
283 * have to go to the left neighbor, but if generation counter
284 * is 0 already, we know for sure, that there is no name with
285 * the same hash value
288 * FIXME: this work correctly only because hash value can not
289 * be 0. Btw, in case of Yura's hash it is probably possible,
292 return NAME_NOT_FOUND
;
294 RFALSE(de
->de_item_num
,
295 "vs-7015: two diritems of the same directory in one node?");
297 return GOTO_PREVIOUS_ITEM
;
301 * may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
302 * FIXME: should add something like IOERROR
304 static int reiserfs_find_entry(struct inode
*dir
, const char *name
, int namelen
,
305 struct treepath
*path_to_entry
,
306 struct reiserfs_dir_entry
*de
)
308 struct cpu_key key_to_search
;
311 if (namelen
> REISERFS_MAX_NAME(dir
->i_sb
->s_blocksize
))
312 return NAME_NOT_FOUND
;
314 /* we will search for this key in the tree */
315 make_cpu_key(&key_to_search
, dir
,
316 get_third_component(dir
->i_sb
, name
, namelen
),
321 search_by_entry_key(dir
->i_sb
, &key_to_search
,
323 if (retval
== IO_ERROR
) {
324 reiserfs_error(dir
->i_sb
, "zam-7001", "io error");
328 /* compare names for all entries having given hash value */
330 linear_search_in_dir_item(&key_to_search
, de
, name
,
333 * there is no need to scan directory anymore.
334 * Given entry found or does not exist
336 if (retval
!= GOTO_PREVIOUS_ITEM
) {
337 path_to_entry
->pos_in_item
= de
->de_entry_num
;
342 * there is left neighboring item of this directory
343 * and given entry can be there
345 set_cpu_key_k_offset(&key_to_search
,
346 le_ih_k_offset(de
->de_ih
) - 1);
347 pathrelse(path_to_entry
);
352 static struct dentry
*reiserfs_lookup(struct inode
*dir
, struct dentry
*dentry
,
356 struct inode
*inode
= NULL
;
357 struct reiserfs_dir_entry de
;
358 INITIALIZE_PATH(path_to_entry
);
360 if (REISERFS_MAX_NAME(dir
->i_sb
->s_blocksize
) < dentry
->d_name
.len
)
361 return ERR_PTR(-ENAMETOOLONG
);
363 reiserfs_write_lock(dir
->i_sb
);
365 de
.de_gen_number_bit_string
= NULL
;
367 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
368 &path_to_entry
, &de
);
369 pathrelse(&path_to_entry
);
370 if (retval
== NAME_FOUND
) {
371 inode
= reiserfs_iget(dir
->i_sb
,
372 (struct cpu_key
*)&de
.de_dir_id
);
373 if (!inode
|| IS_ERR(inode
)) {
374 reiserfs_write_unlock(dir
->i_sb
);
375 return ERR_PTR(-EACCES
);
379 * Propagate the private flag so we know we're
383 inode
->i_flags
|= S_PRIVATE
;
385 reiserfs_write_unlock(dir
->i_sb
);
386 if (retval
== IO_ERROR
) {
387 return ERR_PTR(-EIO
);
390 return d_splice_alias(inode
, dentry
);
394 * looks up the dentry of the parent directory for child.
395 * taken from ext2_get_parent
397 struct dentry
*reiserfs_get_parent(struct dentry
*child
)
400 struct inode
*inode
= NULL
;
401 struct reiserfs_dir_entry de
;
402 INITIALIZE_PATH(path_to_entry
);
403 struct inode
*dir
= d_inode(child
);
405 if (dir
->i_nlink
== 0) {
406 return ERR_PTR(-ENOENT
);
408 de
.de_gen_number_bit_string
= NULL
;
410 reiserfs_write_lock(dir
->i_sb
);
411 retval
= reiserfs_find_entry(dir
, "..", 2, &path_to_entry
, &de
);
412 pathrelse(&path_to_entry
);
413 if (retval
!= NAME_FOUND
) {
414 reiserfs_write_unlock(dir
->i_sb
);
415 return ERR_PTR(-ENOENT
);
417 inode
= reiserfs_iget(dir
->i_sb
, (struct cpu_key
*)&de
.de_dir_id
);
418 reiserfs_write_unlock(dir
->i_sb
);
420 return d_obtain_alias(inode
);
423 /* add entry to the directory (entry can be hidden).
425 insert definition of when hidden directories are used here -Hans
427 Does not mark dir inode dirty, do it after successesfull call to it */
429 static int reiserfs_add_entry(struct reiserfs_transaction_handle
*th
,
430 struct inode
*dir
, const char *name
, int namelen
,
431 struct inode
*inode
, int visible
)
433 struct cpu_key entry_key
;
434 struct reiserfs_de_head
*deh
;
435 INITIALIZE_PATH(path
);
436 struct reiserfs_dir_entry de
;
437 DECLARE_BITMAP(bit_string
, MAX_GENERATION_NUMBER
+ 1);
441 * 48 bytes now and we avoid kmalloc if we
442 * create file with short name
444 char small_buf
[32 + DEH_SIZE
];
447 int buflen
, paste_size
;
450 BUG_ON(!th
->t_trans_id
);
452 /* cannot allow items to be added into a busy deleted directory */
456 if (namelen
> REISERFS_MAX_NAME(dir
->i_sb
->s_blocksize
))
457 return -ENAMETOOLONG
;
459 /* each entry has unique key. compose it */
460 make_cpu_key(&entry_key
, dir
,
461 get_third_component(dir
->i_sb
, name
, namelen
),
464 /* get memory for composing the entry */
465 buflen
= DEH_SIZE
+ ROUND_UP(namelen
);
466 if (buflen
> sizeof(small_buf
)) {
467 buffer
= kmalloc(buflen
, GFP_NOFS
);
474 (get_inode_sd_version(dir
) ==
475 STAT_DATA_V1
) ? (DEH_SIZE
+ namelen
) : buflen
;
478 * fill buffer : directory entry head, name[, dir objectid | ,
479 * stat data | ,stat data, dir objectid ]
481 deh
= (struct reiserfs_de_head
*)buffer
;
482 deh
->deh_location
= 0; /* JDM Endian safe if 0 */
483 put_deh_offset(deh
, cpu_key_k_offset(&entry_key
));
484 deh
->deh_state
= 0; /* JDM Endian safe if 0 */
485 /* put key (ino analog) to de */
487 /* safe: k_dir_id is le */
488 deh
->deh_dir_id
= INODE_PKEY(inode
)->k_dir_id
;
489 /* safe: k_objectid is le */
490 deh
->deh_objectid
= INODE_PKEY(inode
)->k_objectid
;
493 memcpy((char *)(deh
+ 1), name
, namelen
);
494 /* padd by 0s to the 4 byte boundary */
495 padd_item((char *)(deh
+ 1), ROUND_UP(namelen
), namelen
);
498 * entry is ready to be pasted into tree, set 'visibility'
499 * and 'stat data in entry' attributes
501 mark_de_without_sd(deh
);
502 visible
? mark_de_visible(deh
) : mark_de_hidden(deh
);
504 /* find the proper place for the new entry */
505 memset(bit_string
, 0, sizeof(bit_string
));
506 de
.de_gen_number_bit_string
= bit_string
;
507 retval
= reiserfs_find_entry(dir
, name
, namelen
, &path
, &de
);
508 if (retval
!= NAME_NOT_FOUND
) {
509 if (buffer
!= small_buf
)
513 if (retval
== IO_ERROR
) {
517 if (retval
!= NAME_FOUND
) {
518 reiserfs_error(dir
->i_sb
, "zam-7002",
519 "reiserfs_find_entry() returned "
520 "unexpected value (%d)", retval
);
527 find_first_zero_bit(bit_string
,
528 MAX_GENERATION_NUMBER
+ 1);
529 if (gen_number
> MAX_GENERATION_NUMBER
) {
530 /* there is no free generation number */
531 reiserfs_warning(dir
->i_sb
, "reiserfs-7010",
532 "Congratulations! we have got hash function "
534 if (buffer
!= small_buf
)
539 /* adjust offset of directory enrty */
540 put_deh_offset(deh
, SET_GENERATION_NUMBER(deh_offset(deh
), gen_number
));
541 set_cpu_key_k_offset(&entry_key
, deh_offset(deh
));
543 /* update max-hash-collisions counter in reiserfs_sb_info */
544 PROC_INFO_MAX(th
->t_super
, max_hash_collisions
, gen_number
);
546 /* we need to re-search for the insertion point */
547 if (gen_number
!= 0) {
548 if (search_by_entry_key(dir
->i_sb
, &entry_key
, &path
, &de
) !=
550 reiserfs_warning(dir
->i_sb
, "vs-7032",
551 "entry with this key (%K) already "
552 "exists", &entry_key
);
554 if (buffer
!= small_buf
)
561 /* perform the insertion of the entry that we have prepared */
563 reiserfs_paste_into_item(th
, &path
, &entry_key
, dir
, buffer
,
565 if (buffer
!= small_buf
)
568 reiserfs_check_path(&path
);
572 dir
->i_size
+= paste_size
;
573 dir
->i_mtime
= dir
->i_ctime
= CURRENT_TIME_SEC
;
574 if (!S_ISDIR(inode
->i_mode
) && visible
)
575 /* reiserfs_mkdir or reiserfs_rename will do that by itself */
576 reiserfs_update_sd(th
, dir
);
578 reiserfs_check_path(&path
);
583 * quota utility function, call if you've had to abort after calling
584 * new_inode_init, and have not called reiserfs_new_inode yet.
585 * This should only be called on inodes that do not have stat data
586 * inserted into the tree yet.
588 static int drop_new_inode(struct inode
*inode
)
591 make_bad_inode(inode
);
592 inode
->i_flags
|= S_NOQUOTA
;
598 * utility function that does setup for reiserfs_new_inode.
599 * dquot_initialize needs lots of credits so it's better to have it
600 * outside of a transaction, so we had to pull some bits of
601 * reiserfs_new_inode out into this func.
603 static int new_inode_init(struct inode
*inode
, struct inode
*dir
, umode_t mode
)
606 * Make inode invalid - just in case we are going to drop it before
607 * the initialization happens
609 INODE_PKEY(inode
)->k_objectid
= 0;
612 * the quota init calls have to know who to charge the quota to, so
613 * we have to set uid and gid here
615 inode_init_owner(inode
, dir
, mode
);
616 return dquot_initialize(inode
);
619 static int reiserfs_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
625 * We need blocks for transaction + (user+group)*(quotas
626 * for new inode + update of quota for directory owner)
629 JOURNAL_PER_BALANCE_CNT
* 2 +
630 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
631 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
632 struct reiserfs_transaction_handle th
;
633 struct reiserfs_security_handle security
;
635 retval
= dquot_initialize(dir
);
639 if (!(inode
= new_inode(dir
->i_sb
))) {
642 retval
= new_inode_init(inode
, dir
, mode
);
644 drop_new_inode(inode
);
648 jbegin_count
+= reiserfs_cache_default_acl(dir
);
649 retval
= reiserfs_security_init(dir
, inode
, &dentry
->d_name
, &security
);
651 drop_new_inode(inode
);
654 jbegin_count
+= retval
;
655 reiserfs_write_lock(dir
->i_sb
);
657 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
659 drop_new_inode(inode
);
664 reiserfs_new_inode(&th
, dir
, mode
, NULL
, 0 /*i_size */ , dentry
,
669 inode
->i_op
= &reiserfs_file_inode_operations
;
670 inode
->i_fop
= &reiserfs_file_operations
;
671 inode
->i_mapping
->a_ops
= &reiserfs_address_space_operations
;
674 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
675 dentry
->d_name
.len
, inode
, 1 /*visible */ );
679 reiserfs_update_sd(&th
, inode
);
680 err
= journal_end(&th
);
683 unlock_new_inode(inode
);
687 reiserfs_update_inode_transaction(inode
);
688 reiserfs_update_inode_transaction(dir
);
690 unlock_new_inode(inode
);
691 d_instantiate(dentry
, inode
);
692 retval
= journal_end(&th
);
695 reiserfs_write_unlock(dir
->i_sb
);
699 static int reiserfs_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
704 struct reiserfs_transaction_handle th
;
705 struct reiserfs_security_handle security
;
707 * We need blocks for transaction + (user+group)*(quotas
708 * for new inode + update of quota for directory owner)
711 JOURNAL_PER_BALANCE_CNT
* 3 +
712 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
713 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
715 if (!new_valid_dev(rdev
))
718 retval
= dquot_initialize(dir
);
722 if (!(inode
= new_inode(dir
->i_sb
))) {
725 retval
= new_inode_init(inode
, dir
, mode
);
727 drop_new_inode(inode
);
731 jbegin_count
+= reiserfs_cache_default_acl(dir
);
732 retval
= reiserfs_security_init(dir
, inode
, &dentry
->d_name
, &security
);
734 drop_new_inode(inode
);
737 jbegin_count
+= retval
;
738 reiserfs_write_lock(dir
->i_sb
);
740 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
742 drop_new_inode(inode
);
747 reiserfs_new_inode(&th
, dir
, mode
, NULL
, 0 /*i_size */ , dentry
,
753 inode
->i_op
= &reiserfs_special_inode_operations
;
754 init_special_inode(inode
, inode
->i_mode
, rdev
);
756 /* FIXME: needed for block and char devices only */
757 reiserfs_update_sd(&th
, inode
);
759 reiserfs_update_inode_transaction(inode
);
760 reiserfs_update_inode_transaction(dir
);
763 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
764 dentry
->d_name
.len
, inode
, 1 /*visible */ );
768 reiserfs_update_sd(&th
, inode
);
769 err
= journal_end(&th
);
772 unlock_new_inode(inode
);
777 unlock_new_inode(inode
);
778 d_instantiate(dentry
, inode
);
779 retval
= journal_end(&th
);
782 reiserfs_write_unlock(dir
->i_sb
);
786 static int reiserfs_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
790 struct reiserfs_transaction_handle th
;
791 struct reiserfs_security_handle security
;
793 * We need blocks for transaction + (user+group)*(quotas
794 * for new inode + update of quota for directory owner)
797 JOURNAL_PER_BALANCE_CNT
* 3 +
798 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
799 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
801 retval
= dquot_initialize(dir
);
805 #ifdef DISPLACE_NEW_PACKING_LOCALITIES
807 * set flag that new packing locality created and new blocks
808 * for the content of that directory are not displaced yet
810 REISERFS_I(dir
)->new_packing_locality
= 1;
812 mode
= S_IFDIR
| mode
;
813 if (!(inode
= new_inode(dir
->i_sb
))) {
816 retval
= new_inode_init(inode
, dir
, mode
);
818 drop_new_inode(inode
);
822 jbegin_count
+= reiserfs_cache_default_acl(dir
);
823 retval
= reiserfs_security_init(dir
, inode
, &dentry
->d_name
, &security
);
825 drop_new_inode(inode
);
828 jbegin_count
+= retval
;
829 reiserfs_write_lock(dir
->i_sb
);
831 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
833 drop_new_inode(inode
);
838 * inc the link count now, so another writer doesn't overflow
839 * it while we sleep later on.
841 INC_DIR_INODE_NLINK(dir
)
843 retval
= reiserfs_new_inode(&th
, dir
, mode
, NULL
/*symlink */ ,
844 old_format_only(dir
->i_sb
) ?
845 EMPTY_DIR_SIZE_V1
: EMPTY_DIR_SIZE
,
846 dentry
, inode
, &security
);
848 DEC_DIR_INODE_NLINK(dir
)
852 reiserfs_update_inode_transaction(inode
);
853 reiserfs_update_inode_transaction(dir
);
855 inode
->i_op
= &reiserfs_dir_inode_operations
;
856 inode
->i_fop
= &reiserfs_dir_operations
;
858 /* note, _this_ add_entry will not update dir's stat data */
860 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
861 dentry
->d_name
.len
, inode
, 1 /*visible */ );
865 DEC_DIR_INODE_NLINK(dir
);
866 reiserfs_update_sd(&th
, inode
);
867 err
= journal_end(&th
);
870 unlock_new_inode(inode
);
874 /* the above add_entry did not update dir's stat data */
875 reiserfs_update_sd(&th
, dir
);
877 unlock_new_inode(inode
);
878 d_instantiate(dentry
, inode
);
879 retval
= journal_end(&th
);
881 reiserfs_write_unlock(dir
->i_sb
);
885 static inline int reiserfs_empty_dir(struct inode
*inode
)
888 * we can cheat because an old format dir cannot have
889 * EMPTY_DIR_SIZE, and a new format dir cannot have
890 * EMPTY_DIR_SIZE_V1. So, if the inode is either size,
891 * regardless of disk format version, the directory is empty.
893 if (inode
->i_size
!= EMPTY_DIR_SIZE
&&
894 inode
->i_size
!= EMPTY_DIR_SIZE_V1
) {
900 static int reiserfs_rmdir(struct inode
*dir
, struct dentry
*dentry
)
904 struct reiserfs_transaction_handle th
;
906 INITIALIZE_PATH(path
);
907 struct reiserfs_dir_entry de
;
910 * we will be doing 2 balancings and update 2 stat data, we
911 * change quotas of the owner of the directory and of the owner
912 * of the parent directory. The quota structure is possibly
913 * deleted only on last iput => outside of this transaction
916 JOURNAL_PER_BALANCE_CNT
* 2 + 2 +
917 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
919 retval
= dquot_initialize(dir
);
923 reiserfs_write_lock(dir
->i_sb
);
924 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
928 de
.de_gen_number_bit_string
= NULL
;
930 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
931 &path
, &de
)) == NAME_NOT_FOUND
) {
934 } else if (retval
== IO_ERROR
) {
939 inode
= d_inode(dentry
);
941 reiserfs_update_inode_transaction(inode
);
942 reiserfs_update_inode_transaction(dir
);
944 if (de
.de_objectid
!= inode
->i_ino
) {
946 * FIXME: compare key of an object and a key found in the entry
951 if (!reiserfs_empty_dir(inode
)) {
956 /* cut entry from dir directory */
957 retval
= reiserfs_cut_from_item(&th
, &path
, &de
.de_entry_key
,
958 dir
, NULL
, /* page */
959 0 /*new file size - not used here */ );
963 if (inode
->i_nlink
!= 2 && inode
->i_nlink
!= 1)
964 reiserfs_error(inode
->i_sb
, "reiserfs-7040",
965 "empty directory has nlink != 2 (%d)",
969 inode
->i_ctime
= dir
->i_ctime
= dir
->i_mtime
= CURRENT_TIME_SEC
;
970 reiserfs_update_sd(&th
, inode
);
972 DEC_DIR_INODE_NLINK(dir
)
973 dir
->i_size
-= (DEH_SIZE
+ de
.de_entrylen
);
974 reiserfs_update_sd(&th
, dir
);
976 /* prevent empty directory from getting lost */
977 add_save_link(&th
, inode
, 0 /* not truncate */ );
979 retval
= journal_end(&th
);
980 reiserfs_check_path(&path
);
982 reiserfs_write_unlock(dir
->i_sb
);
987 * we must release path, because we did not call
988 * reiserfs_cut_from_item, or reiserfs_cut_from_item does not
989 * release path if operation was not complete
992 err
= journal_end(&th
);
993 reiserfs_write_unlock(dir
->i_sb
);
994 return err
? err
: retval
;
997 static int reiserfs_unlink(struct inode
*dir
, struct dentry
*dentry
)
1000 struct inode
*inode
;
1001 struct reiserfs_dir_entry de
;
1002 INITIALIZE_PATH(path
);
1003 struct reiserfs_transaction_handle th
;
1005 unsigned long savelink
;
1007 retval
= dquot_initialize(dir
);
1011 inode
= d_inode(dentry
);
1014 * in this transaction we can be doing at max two balancings and
1015 * update two stat datas, we change quotas of the owner of the
1016 * directory and of the owner of the parent directory. The quota
1017 * structure is possibly deleted only on iput => outside of
1021 JOURNAL_PER_BALANCE_CNT
* 2 + 2 +
1022 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
1024 reiserfs_write_lock(dir
->i_sb
);
1025 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
1029 de
.de_gen_number_bit_string
= NULL
;
1031 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
1032 &path
, &de
)) == NAME_NOT_FOUND
) {
1035 } else if (retval
== IO_ERROR
) {
1040 reiserfs_update_inode_transaction(inode
);
1041 reiserfs_update_inode_transaction(dir
);
1043 if (de
.de_objectid
!= inode
->i_ino
) {
1045 * FIXME: compare key of an object and a key found in the entry
1051 if (!inode
->i_nlink
) {
1052 reiserfs_warning(inode
->i_sb
, "reiserfs-7042",
1053 "deleting nonexistent file (%lu), %d",
1054 inode
->i_ino
, inode
->i_nlink
);
1055 set_nlink(inode
, 1);
1061 * we schedule before doing the add_save_link call, save the link
1062 * count so we don't race
1064 savelink
= inode
->i_nlink
;
1067 reiserfs_cut_from_item(&th
, &path
, &de
.de_entry_key
, dir
, NULL
,
1073 inode
->i_ctime
= CURRENT_TIME_SEC
;
1074 reiserfs_update_sd(&th
, inode
);
1076 dir
->i_size
-= (de
.de_entrylen
+ DEH_SIZE
);
1077 dir
->i_ctime
= dir
->i_mtime
= CURRENT_TIME_SEC
;
1078 reiserfs_update_sd(&th
, dir
);
1081 /* prevent file from getting lost */
1082 add_save_link(&th
, inode
, 0 /* not truncate */ );
1084 retval
= journal_end(&th
);
1085 reiserfs_check_path(&path
);
1086 reiserfs_write_unlock(dir
->i_sb
);
1091 err
= journal_end(&th
);
1092 reiserfs_check_path(&path
);
1096 reiserfs_write_unlock(dir
->i_sb
);
1100 static int reiserfs_symlink(struct inode
*parent_dir
,
1101 struct dentry
*dentry
, const char *symname
)
1104 struct inode
*inode
;
1107 struct reiserfs_transaction_handle th
;
1108 struct reiserfs_security_handle security
;
1109 int mode
= S_IFLNK
| S_IRWXUGO
;
1111 * We need blocks for transaction + (user+group)*(quotas for
1112 * new inode + update of quota for directory owner)
1115 JOURNAL_PER_BALANCE_CNT
* 3 +
1116 2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir
->i_sb
) +
1117 REISERFS_QUOTA_TRANS_BLOCKS(parent_dir
->i_sb
));
1119 retval
= dquot_initialize(parent_dir
);
1123 if (!(inode
= new_inode(parent_dir
->i_sb
))) {
1126 retval
= new_inode_init(inode
, parent_dir
, mode
);
1128 drop_new_inode(inode
);
1132 retval
= reiserfs_security_init(parent_dir
, inode
, &dentry
->d_name
,
1135 drop_new_inode(inode
);
1138 jbegin_count
+= retval
;
1140 reiserfs_write_lock(parent_dir
->i_sb
);
1141 item_len
= ROUND_UP(strlen(symname
));
1142 if (item_len
> MAX_DIRECT_ITEM_LEN(parent_dir
->i_sb
->s_blocksize
)) {
1143 retval
= -ENAMETOOLONG
;
1144 drop_new_inode(inode
);
1148 name
= kmalloc(item_len
, GFP_NOFS
);
1150 drop_new_inode(inode
);
1154 memcpy(name
, symname
, strlen(symname
));
1155 padd_item(name
, item_len
, strlen(symname
));
1157 retval
= journal_begin(&th
, parent_dir
->i_sb
, jbegin_count
);
1159 drop_new_inode(inode
);
1165 reiserfs_new_inode(&th
, parent_dir
, mode
, name
, strlen(symname
),
1166 dentry
, inode
, &security
);
1168 if (retval
) { /* reiserfs_new_inode iputs for us */
1172 reiserfs_update_inode_transaction(inode
);
1173 reiserfs_update_inode_transaction(parent_dir
);
1175 inode
->i_op
= &reiserfs_symlink_inode_operations
;
1176 inode
->i_mapping
->a_ops
= &reiserfs_address_space_operations
;
1178 retval
= reiserfs_add_entry(&th
, parent_dir
, dentry
->d_name
.name
,
1179 dentry
->d_name
.len
, inode
, 1 /*visible */ );
1183 reiserfs_update_sd(&th
, inode
);
1184 err
= journal_end(&th
);
1187 unlock_new_inode(inode
);
1192 unlock_new_inode(inode
);
1193 d_instantiate(dentry
, inode
);
1194 retval
= journal_end(&th
);
1196 reiserfs_write_unlock(parent_dir
->i_sb
);
1200 static int reiserfs_link(struct dentry
*old_dentry
, struct inode
*dir
,
1201 struct dentry
*dentry
)
1204 struct inode
*inode
= d_inode(old_dentry
);
1205 struct reiserfs_transaction_handle th
;
1207 * We need blocks for transaction + update of quotas for
1208 * the owners of the directory
1211 JOURNAL_PER_BALANCE_CNT
* 3 +
1212 2 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
1214 retval
= dquot_initialize(dir
);
1218 reiserfs_write_lock(dir
->i_sb
);
1219 if (inode
->i_nlink
>= REISERFS_LINK_MAX
) {
1220 /* FIXME: sd_nlink is 32 bit for new files */
1221 reiserfs_write_unlock(dir
->i_sb
);
1225 /* inc before scheduling so reiserfs_unlink knows we are here */
1228 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
1231 reiserfs_write_unlock(dir
->i_sb
);
1235 /* create new entry */
1237 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
1238 dentry
->d_name
.len
, inode
, 1 /*visible */ );
1240 reiserfs_update_inode_transaction(inode
);
1241 reiserfs_update_inode_transaction(dir
);
1246 err
= journal_end(&th
);
1247 reiserfs_write_unlock(dir
->i_sb
);
1248 return err
? err
: retval
;
1251 inode
->i_ctime
= CURRENT_TIME_SEC
;
1252 reiserfs_update_sd(&th
, inode
);
1255 d_instantiate(dentry
, inode
);
1256 retval
= journal_end(&th
);
1257 reiserfs_write_unlock(dir
->i_sb
);
1261 /* de contains information pointing to an entry which */
1262 static int de_still_valid(const char *name
, int len
,
1263 struct reiserfs_dir_entry
*de
)
1265 struct reiserfs_dir_entry tmp
= *de
;
1267 /* recalculate pointer to name and name length */
1268 set_de_name_and_namelen(&tmp
);
1269 /* FIXME: could check more */
1270 if (tmp
.de_namelen
!= len
|| memcmp(name
, de
->de_name
, len
))
1275 static int entry_points_to_object(const char *name
, int len
,
1276 struct reiserfs_dir_entry
*de
,
1277 struct inode
*inode
)
1279 if (!de_still_valid(name
, len
, de
))
1283 if (!de_visible(de
->de_deh
+ de
->de_entry_num
))
1284 reiserfs_panic(inode
->i_sb
, "vs-7042",
1285 "entry must be visible");
1286 return (de
->de_objectid
== inode
->i_ino
) ? 1 : 0;
1289 /* this must be added hidden entry */
1290 if (de_visible(de
->de_deh
+ de
->de_entry_num
))
1291 reiserfs_panic(NULL
, "vs-7043", "entry must be visible");
1296 /* sets key of objectid the entry has to point to */
1297 static void set_ino_in_dir_entry(struct reiserfs_dir_entry
*de
,
1298 struct reiserfs_key
*key
)
1300 /* JDM These operations are endian safe - both are le */
1301 de
->de_deh
[de
->de_entry_num
].deh_dir_id
= key
->k_dir_id
;
1302 de
->de_deh
[de
->de_entry_num
].deh_objectid
= key
->k_objectid
;
1306 * process, that is going to call fix_nodes/do_balance must hold only
1307 * one path. If it holds 2 or more, it can get into endless waiting in
1308 * get_empty_nodes or its clones
1310 static int reiserfs_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1311 struct inode
*new_dir
, struct dentry
*new_dentry
)
1314 INITIALIZE_PATH(old_entry_path
);
1315 INITIALIZE_PATH(new_entry_path
);
1316 INITIALIZE_PATH(dot_dot_entry_path
);
1317 struct item_head new_entry_ih
, old_entry_ih
, dot_dot_ih
;
1318 struct reiserfs_dir_entry old_de
, new_de
, dot_dot_de
;
1319 struct inode
*old_inode
, *new_dentry_inode
;
1320 struct reiserfs_transaction_handle th
;
1322 umode_t old_inode_mode
;
1323 unsigned long savelink
= 1;
1324 struct timespec ctime
;
1327 * three balancings: (1) old name removal, (2) new name insertion
1328 * and (3) maybe "save" link insertion
1329 * stat data updates: (1) old directory,
1330 * (2) new directory and (3) maybe old object stat data (when it is
1331 * directory) and (4) maybe stat data of object to which new entry
1332 * pointed initially and (5) maybe block containing ".." of
1334 * quota updates: two parent directories
1337 JOURNAL_PER_BALANCE_CNT
* 3 + 5 +
1338 4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir
->i_sb
);
1340 retval
= dquot_initialize(old_dir
);
1343 retval
= dquot_initialize(new_dir
);
1347 old_inode
= d_inode(old_dentry
);
1348 new_dentry_inode
= d_inode(new_dentry
);
1351 * make sure that oldname still exists and points to an object we
1352 * are going to rename
1354 old_de
.de_gen_number_bit_string
= NULL
;
1355 reiserfs_write_lock(old_dir
->i_sb
);
1357 reiserfs_find_entry(old_dir
, old_dentry
->d_name
.name
,
1358 old_dentry
->d_name
.len
, &old_entry_path
,
1360 pathrelse(&old_entry_path
);
1361 if (retval
== IO_ERROR
) {
1362 reiserfs_write_unlock(old_dir
->i_sb
);
1366 if (retval
!= NAME_FOUND
|| old_de
.de_objectid
!= old_inode
->i_ino
) {
1367 reiserfs_write_unlock(old_dir
->i_sb
);
1371 old_inode_mode
= old_inode
->i_mode
;
1372 if (S_ISDIR(old_inode_mode
)) {
1374 * make sure that directory being renamed has correct ".."
1375 * and that its new parent directory has not too many links
1378 if (new_dentry_inode
) {
1379 if (!reiserfs_empty_dir(new_dentry_inode
)) {
1380 reiserfs_write_unlock(old_dir
->i_sb
);
1386 * directory is renamed, its parent directory will be changed,
1387 * so find ".." entry
1389 dot_dot_de
.de_gen_number_bit_string
= NULL
;
1391 reiserfs_find_entry(old_inode
, "..", 2, &dot_dot_entry_path
,
1393 pathrelse(&dot_dot_entry_path
);
1394 if (retval
!= NAME_FOUND
) {
1395 reiserfs_write_unlock(old_dir
->i_sb
);
1399 /* inode number of .. must equal old_dir->i_ino */
1400 if (dot_dot_de
.de_objectid
!= old_dir
->i_ino
) {
1401 reiserfs_write_unlock(old_dir
->i_sb
);
1406 retval
= journal_begin(&th
, old_dir
->i_sb
, jbegin_count
);
1408 reiserfs_write_unlock(old_dir
->i_sb
);
1412 /* add new entry (or find the existing one) */
1414 reiserfs_add_entry(&th
, new_dir
, new_dentry
->d_name
.name
,
1415 new_dentry
->d_name
.len
, old_inode
, 0);
1416 if (retval
== -EEXIST
) {
1417 if (!new_dentry_inode
) {
1418 reiserfs_panic(old_dir
->i_sb
, "vs-7050",
1419 "new entry is found, new inode == 0");
1421 } else if (retval
) {
1422 int err
= journal_end(&th
);
1423 reiserfs_write_unlock(old_dir
->i_sb
);
1424 return err
? err
: retval
;
1427 reiserfs_update_inode_transaction(old_dir
);
1428 reiserfs_update_inode_transaction(new_dir
);
1431 * this makes it so an fsync on an open fd for the old name will
1432 * commit the rename operation
1434 reiserfs_update_inode_transaction(old_inode
);
1436 if (new_dentry_inode
)
1437 reiserfs_update_inode_transaction(new_dentry_inode
);
1441 * look for old name using corresponding entry key
1442 * (found by reiserfs_find_entry)
1445 search_by_entry_key(new_dir
->i_sb
, &old_de
.de_entry_key
,
1447 &old_de
)) != NAME_FOUND
) {
1448 pathrelse(&old_entry_path
);
1450 reiserfs_write_unlock(old_dir
->i_sb
);
1454 copy_item_head(&old_entry_ih
, tp_item_head(&old_entry_path
));
1456 reiserfs_prepare_for_journal(old_inode
->i_sb
, old_de
.de_bh
, 1);
1458 /* look for new name by reiserfs_find_entry */
1459 new_de
.de_gen_number_bit_string
= NULL
;
1461 reiserfs_find_entry(new_dir
, new_dentry
->d_name
.name
,
1462 new_dentry
->d_name
.len
, &new_entry_path
,
1465 * reiserfs_add_entry should not return IO_ERROR,
1466 * because it is called with essentially same parameters from
1467 * reiserfs_add_entry above, and we'll catch any i/o errors
1468 * before we get here.
1470 if (retval
!= NAME_FOUND_INVISIBLE
&& retval
!= NAME_FOUND
) {
1471 pathrelse(&new_entry_path
);
1472 pathrelse(&old_entry_path
);
1474 reiserfs_write_unlock(old_dir
->i_sb
);
1478 copy_item_head(&new_entry_ih
, tp_item_head(&new_entry_path
));
1480 reiserfs_prepare_for_journal(old_inode
->i_sb
, new_de
.de_bh
, 1);
1482 if (S_ISDIR(old_inode
->i_mode
)) {
1484 search_by_entry_key(new_dir
->i_sb
,
1485 &dot_dot_de
.de_entry_key
,
1486 &dot_dot_entry_path
,
1487 &dot_dot_de
)) != NAME_FOUND
) {
1488 pathrelse(&dot_dot_entry_path
);
1489 pathrelse(&new_entry_path
);
1490 pathrelse(&old_entry_path
);
1492 reiserfs_write_unlock(old_dir
->i_sb
);
1495 copy_item_head(&dot_dot_ih
,
1496 tp_item_head(&dot_dot_entry_path
));
1497 /* node containing ".." gets into transaction */
1498 reiserfs_prepare_for_journal(old_inode
->i_sb
,
1499 dot_dot_de
.de_bh
, 1);
1502 * we should check seals here, not do
1503 * this stuff, yes? Then, having
1504 * gathered everything into RAM we
1505 * should lock the buffers, yes? -Hans
1508 * probably. our rename needs to hold more
1509 * than one path at once. The seals would
1510 * have to be written to deal with multi-path
1514 * sanity checking before doing the rename - avoid races many
1515 * of the above checks could have scheduled. We have to be
1516 * sure our items haven't been shifted by another process.
1518 if (item_moved(&new_entry_ih
, &new_entry_path
) ||
1519 !entry_points_to_object(new_dentry
->d_name
.name
,
1520 new_dentry
->d_name
.len
,
1521 &new_de
, new_dentry_inode
) ||
1522 item_moved(&old_entry_ih
, &old_entry_path
) ||
1523 !entry_points_to_object(old_dentry
->d_name
.name
,
1524 old_dentry
->d_name
.len
,
1525 &old_de
, old_inode
)) {
1526 reiserfs_restore_prepared_buffer(old_inode
->i_sb
,
1528 reiserfs_restore_prepared_buffer(old_inode
->i_sb
,
1530 if (S_ISDIR(old_inode_mode
))
1531 reiserfs_restore_prepared_buffer(old_inode
->
1537 if (S_ISDIR(old_inode_mode
)) {
1538 if (item_moved(&dot_dot_ih
, &dot_dot_entry_path
) ||
1539 !entry_points_to_object("..", 2, &dot_dot_de
,
1541 reiserfs_restore_prepared_buffer(old_inode
->
1544 reiserfs_restore_prepared_buffer(old_inode
->
1547 reiserfs_restore_prepared_buffer(old_inode
->
1555 RFALSE(S_ISDIR(old_inode_mode
) &&
1556 !buffer_journal_prepared(dot_dot_de
.de_bh
), "");
1562 * ok, all the changes can be done in one fell swoop when we
1563 * have claimed all the buffers needed.
1566 mark_de_visible(new_de
.de_deh
+ new_de
.de_entry_num
);
1567 set_ino_in_dir_entry(&new_de
, INODE_PKEY(old_inode
));
1568 journal_mark_dirty(&th
, new_de
.de_bh
);
1570 mark_de_hidden(old_de
.de_deh
+ old_de
.de_entry_num
);
1571 journal_mark_dirty(&th
, old_de
.de_bh
);
1572 ctime
= CURRENT_TIME_SEC
;
1573 old_dir
->i_ctime
= old_dir
->i_mtime
= ctime
;
1574 new_dir
->i_ctime
= new_dir
->i_mtime
= ctime
;
1576 * thanks to Alex Adriaanse <alex_a@caltech.edu> for patch
1577 * which adds ctime update of renamed object
1579 old_inode
->i_ctime
= ctime
;
1581 if (new_dentry_inode
) {
1582 /* adjust link number of the victim */
1583 if (S_ISDIR(new_dentry_inode
->i_mode
)) {
1584 clear_nlink(new_dentry_inode
);
1586 drop_nlink(new_dentry_inode
);
1588 new_dentry_inode
->i_ctime
= ctime
;
1589 savelink
= new_dentry_inode
->i_nlink
;
1592 if (S_ISDIR(old_inode_mode
)) {
1593 /* adjust ".." of renamed directory */
1594 set_ino_in_dir_entry(&dot_dot_de
, INODE_PKEY(new_dir
));
1595 journal_mark_dirty(&th
, dot_dot_de
.de_bh
);
1598 * there (in new_dir) was no directory, so it got new link
1599 * (".." of renamed directory)
1601 if (!new_dentry_inode
)
1602 INC_DIR_INODE_NLINK(new_dir
);
1604 /* old directory lost one link - ".. " of renamed directory */
1605 DEC_DIR_INODE_NLINK(old_dir
);
1608 * looks like in 2.3.99pre3 brelse is atomic.
1609 * so we can use pathrelse
1611 pathrelse(&new_entry_path
);
1612 pathrelse(&dot_dot_entry_path
);
1615 * FIXME: this reiserfs_cut_from_item's return value may screw up
1616 * anybody, but it will panic if will not be able to find the
1617 * entry. This needs one more clean up
1619 if (reiserfs_cut_from_item
1620 (&th
, &old_entry_path
, &old_de
.de_entry_key
, old_dir
, NULL
,
1622 reiserfs_error(old_dir
->i_sb
, "vs-7060",
1623 "couldn't not cut old name. Fsck later?");
1625 old_dir
->i_size
-= DEH_SIZE
+ old_de
.de_entrylen
;
1627 reiserfs_update_sd(&th
, old_dir
);
1628 reiserfs_update_sd(&th
, new_dir
);
1629 reiserfs_update_sd(&th
, old_inode
);
1631 if (new_dentry_inode
) {
1633 add_save_link(&th
, new_dentry_inode
,
1634 0 /* not truncate */ );
1635 reiserfs_update_sd(&th
, new_dentry_inode
);
1638 retval
= journal_end(&th
);
1639 reiserfs_write_unlock(old_dir
->i_sb
);
1643 /* directories can handle most operations... */
1644 const struct inode_operations reiserfs_dir_inode_operations
= {
1645 .create
= reiserfs_create
,
1646 .lookup
= reiserfs_lookup
,
1647 .link
= reiserfs_link
,
1648 .unlink
= reiserfs_unlink
,
1649 .symlink
= reiserfs_symlink
,
1650 .mkdir
= reiserfs_mkdir
,
1651 .rmdir
= reiserfs_rmdir
,
1652 .mknod
= reiserfs_mknod
,
1653 .rename
= reiserfs_rename
,
1654 .setattr
= reiserfs_setattr
,
1655 .setxattr
= reiserfs_setxattr
,
1656 .getxattr
= reiserfs_getxattr
,
1657 .listxattr
= reiserfs_listxattr
,
1658 .removexattr
= reiserfs_removexattr
,
1659 .permission
= reiserfs_permission
,
1660 .get_acl
= reiserfs_get_acl
,
1661 .set_acl
= reiserfs_set_acl
,
1665 * symlink operations.. same as page_symlink_inode_operations, with xattr
1668 const struct inode_operations reiserfs_symlink_inode_operations
= {
1669 .readlink
= generic_readlink
,
1670 .follow_link
= page_follow_link_light
,
1671 .put_link
= page_put_link
,
1672 .setattr
= reiserfs_setattr
,
1673 .setxattr
= reiserfs_setxattr
,
1674 .getxattr
= reiserfs_getxattr
,
1675 .listxattr
= reiserfs_listxattr
,
1676 .removexattr
= reiserfs_removexattr
,
1677 .permission
= reiserfs_permission
,
1681 * special file operations.. just xattr/acl stuff
1683 const struct inode_operations reiserfs_special_inode_operations
= {
1684 .setattr
= reiserfs_setattr
,
1685 .setxattr
= reiserfs_setxattr
,
1686 .getxattr
= reiserfs_getxattr
,
1687 .listxattr
= reiserfs_listxattr
,
1688 .removexattr
= reiserfs_removexattr
,
1689 .permission
= reiserfs_permission
,
1690 .get_acl
= reiserfs_get_acl
,
1691 .set_acl
= reiserfs_set_acl
,