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
= child
->d_inode
;
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 dquot_initialize(inode
);
620 static int reiserfs_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
626 * We need blocks for transaction + (user+group)*(quotas
627 * for new inode + update of quota for directory owner)
630 JOURNAL_PER_BALANCE_CNT
* 2 +
631 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
632 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
633 struct reiserfs_transaction_handle th
;
634 struct reiserfs_security_handle security
;
636 dquot_initialize(dir
);
638 if (!(inode
= new_inode(dir
->i_sb
))) {
641 new_inode_init(inode
, dir
, mode
);
643 jbegin_count
+= reiserfs_cache_default_acl(dir
);
644 retval
= reiserfs_security_init(dir
, inode
, &dentry
->d_name
, &security
);
646 drop_new_inode(inode
);
649 jbegin_count
+= retval
;
650 reiserfs_write_lock(dir
->i_sb
);
652 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
654 drop_new_inode(inode
);
659 reiserfs_new_inode(&th
, dir
, mode
, NULL
, 0 /*i_size */ , dentry
,
664 inode
->i_op
= &reiserfs_file_inode_operations
;
665 inode
->i_fop
= &reiserfs_file_operations
;
666 inode
->i_mapping
->a_ops
= &reiserfs_address_space_operations
;
669 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
670 dentry
->d_name
.len
, inode
, 1 /*visible */ );
674 reiserfs_update_sd(&th
, inode
);
675 err
= journal_end(&th
);
678 unlock_new_inode(inode
);
682 reiserfs_update_inode_transaction(inode
);
683 reiserfs_update_inode_transaction(dir
);
685 unlock_new_inode(inode
);
686 d_instantiate(dentry
, inode
);
687 retval
= journal_end(&th
);
690 reiserfs_write_unlock(dir
->i_sb
);
694 static int reiserfs_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
699 struct reiserfs_transaction_handle th
;
700 struct reiserfs_security_handle security
;
702 * We need blocks for transaction + (user+group)*(quotas
703 * for new inode + update of quota for directory owner)
706 JOURNAL_PER_BALANCE_CNT
* 3 +
707 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
708 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
710 if (!new_valid_dev(rdev
))
713 dquot_initialize(dir
);
715 if (!(inode
= new_inode(dir
->i_sb
))) {
718 new_inode_init(inode
, dir
, mode
);
720 jbegin_count
+= reiserfs_cache_default_acl(dir
);
721 retval
= reiserfs_security_init(dir
, inode
, &dentry
->d_name
, &security
);
723 drop_new_inode(inode
);
726 jbegin_count
+= retval
;
727 reiserfs_write_lock(dir
->i_sb
);
729 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
731 drop_new_inode(inode
);
736 reiserfs_new_inode(&th
, dir
, mode
, NULL
, 0 /*i_size */ , dentry
,
742 inode
->i_op
= &reiserfs_special_inode_operations
;
743 init_special_inode(inode
, inode
->i_mode
, rdev
);
745 /* FIXME: needed for block and char devices only */
746 reiserfs_update_sd(&th
, inode
);
748 reiserfs_update_inode_transaction(inode
);
749 reiserfs_update_inode_transaction(dir
);
752 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
753 dentry
->d_name
.len
, inode
, 1 /*visible */ );
757 reiserfs_update_sd(&th
, inode
);
758 err
= journal_end(&th
);
761 unlock_new_inode(inode
);
766 unlock_new_inode(inode
);
767 d_instantiate(dentry
, inode
);
768 retval
= journal_end(&th
);
771 reiserfs_write_unlock(dir
->i_sb
);
775 static int reiserfs_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
779 struct reiserfs_transaction_handle th
;
780 struct reiserfs_security_handle security
;
782 * We need blocks for transaction + (user+group)*(quotas
783 * for new inode + update of quota for directory owner)
786 JOURNAL_PER_BALANCE_CNT
* 3 +
787 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
788 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
790 dquot_initialize(dir
);
792 #ifdef DISPLACE_NEW_PACKING_LOCALITIES
794 * set flag that new packing locality created and new blocks
795 * for the content of that directory are not displaced yet
797 REISERFS_I(dir
)->new_packing_locality
= 1;
799 mode
= S_IFDIR
| mode
;
800 if (!(inode
= new_inode(dir
->i_sb
))) {
803 new_inode_init(inode
, dir
, mode
);
805 jbegin_count
+= reiserfs_cache_default_acl(dir
);
806 retval
= reiserfs_security_init(dir
, inode
, &dentry
->d_name
, &security
);
808 drop_new_inode(inode
);
811 jbegin_count
+= retval
;
812 reiserfs_write_lock(dir
->i_sb
);
814 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
816 drop_new_inode(inode
);
821 * inc the link count now, so another writer doesn't overflow
822 * it while we sleep later on.
824 INC_DIR_INODE_NLINK(dir
)
826 retval
= reiserfs_new_inode(&th
, dir
, mode
, NULL
/*symlink */ ,
827 old_format_only(dir
->i_sb
) ?
828 EMPTY_DIR_SIZE_V1
: EMPTY_DIR_SIZE
,
829 dentry
, inode
, &security
);
831 DEC_DIR_INODE_NLINK(dir
)
835 reiserfs_update_inode_transaction(inode
);
836 reiserfs_update_inode_transaction(dir
);
838 inode
->i_op
= &reiserfs_dir_inode_operations
;
839 inode
->i_fop
= &reiserfs_dir_operations
;
841 /* note, _this_ add_entry will not update dir's stat data */
843 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
844 dentry
->d_name
.len
, inode
, 1 /*visible */ );
848 DEC_DIR_INODE_NLINK(dir
);
849 reiserfs_update_sd(&th
, inode
);
850 err
= journal_end(&th
);
853 unlock_new_inode(inode
);
857 /* the above add_entry did not update dir's stat data */
858 reiserfs_update_sd(&th
, dir
);
860 unlock_new_inode(inode
);
861 d_instantiate(dentry
, inode
);
862 retval
= journal_end(&th
);
864 reiserfs_write_unlock(dir
->i_sb
);
868 static inline int reiserfs_empty_dir(struct inode
*inode
)
871 * we can cheat because an old format dir cannot have
872 * EMPTY_DIR_SIZE, and a new format dir cannot have
873 * EMPTY_DIR_SIZE_V1. So, if the inode is either size,
874 * regardless of disk format version, the directory is empty.
876 if (inode
->i_size
!= EMPTY_DIR_SIZE
&&
877 inode
->i_size
!= EMPTY_DIR_SIZE_V1
) {
883 static int reiserfs_rmdir(struct inode
*dir
, struct dentry
*dentry
)
887 struct reiserfs_transaction_handle th
;
889 INITIALIZE_PATH(path
);
890 struct reiserfs_dir_entry de
;
893 * we will be doing 2 balancings and update 2 stat data, we
894 * change quotas of the owner of the directory and of the owner
895 * of the parent directory. The quota structure is possibly
896 * deleted only on last iput => outside of this transaction
899 JOURNAL_PER_BALANCE_CNT
* 2 + 2 +
900 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
902 dquot_initialize(dir
);
904 reiserfs_write_lock(dir
->i_sb
);
905 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
909 de
.de_gen_number_bit_string
= NULL
;
911 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
912 &path
, &de
)) == NAME_NOT_FOUND
) {
915 } else if (retval
== IO_ERROR
) {
920 inode
= dentry
->d_inode
;
922 reiserfs_update_inode_transaction(inode
);
923 reiserfs_update_inode_transaction(dir
);
925 if (de
.de_objectid
!= inode
->i_ino
) {
927 * FIXME: compare key of an object and a key found in the entry
932 if (!reiserfs_empty_dir(inode
)) {
937 /* cut entry from dir directory */
938 retval
= reiserfs_cut_from_item(&th
, &path
, &(de
.de_entry_key
), dir
, NULL
, /* page */
939 0 /*new file size - not used here */ );
943 if (inode
->i_nlink
!= 2 && inode
->i_nlink
!= 1)
944 reiserfs_error(inode
->i_sb
, "reiserfs-7040",
945 "empty directory has nlink != 2 (%d)",
949 inode
->i_ctime
= dir
->i_ctime
= dir
->i_mtime
= CURRENT_TIME_SEC
;
950 reiserfs_update_sd(&th
, inode
);
952 DEC_DIR_INODE_NLINK(dir
)
953 dir
->i_size
-= (DEH_SIZE
+ de
.de_entrylen
);
954 reiserfs_update_sd(&th
, dir
);
956 /* prevent empty directory from getting lost */
957 add_save_link(&th
, inode
, 0 /* not truncate */ );
959 retval
= journal_end(&th
);
960 reiserfs_check_path(&path
);
962 reiserfs_write_unlock(dir
->i_sb
);
967 * we must release path, because we did not call
968 * reiserfs_cut_from_item, or reiserfs_cut_from_item does not
969 * release path if operation was not complete
972 err
= journal_end(&th
);
973 reiserfs_write_unlock(dir
->i_sb
);
974 return err
? err
: retval
;
977 static int reiserfs_unlink(struct inode
*dir
, struct dentry
*dentry
)
981 struct reiserfs_dir_entry de
;
982 INITIALIZE_PATH(path
);
983 struct reiserfs_transaction_handle th
;
985 unsigned long savelink
;
987 dquot_initialize(dir
);
989 inode
= dentry
->d_inode
;
992 * in this transaction we can be doing at max two balancings and
993 * update two stat datas, we change quotas of the owner of the
994 * directory and of the owner of the parent directory. The quota
995 * structure is possibly deleted only on iput => outside of
999 JOURNAL_PER_BALANCE_CNT
* 2 + 2 +
1000 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
1002 reiserfs_write_lock(dir
->i_sb
);
1003 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
1007 de
.de_gen_number_bit_string
= NULL
;
1009 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
1010 &path
, &de
)) == NAME_NOT_FOUND
) {
1013 } else if (retval
== IO_ERROR
) {
1018 reiserfs_update_inode_transaction(inode
);
1019 reiserfs_update_inode_transaction(dir
);
1021 if (de
.de_objectid
!= inode
->i_ino
) {
1023 * FIXME: compare key of an object and a key found in the entry
1029 if (!inode
->i_nlink
) {
1030 reiserfs_warning(inode
->i_sb
, "reiserfs-7042",
1031 "deleting nonexistent file (%lu), %d",
1032 inode
->i_ino
, inode
->i_nlink
);
1033 set_nlink(inode
, 1);
1039 * we schedule before doing the add_save_link call, save the link
1040 * count so we don't race
1042 savelink
= inode
->i_nlink
;
1045 reiserfs_cut_from_item(&th
, &path
, &(de
.de_entry_key
), dir
, NULL
,
1051 inode
->i_ctime
= CURRENT_TIME_SEC
;
1052 reiserfs_update_sd(&th
, inode
);
1054 dir
->i_size
-= (de
.de_entrylen
+ DEH_SIZE
);
1055 dir
->i_ctime
= dir
->i_mtime
= CURRENT_TIME_SEC
;
1056 reiserfs_update_sd(&th
, dir
);
1059 /* prevent file from getting lost */
1060 add_save_link(&th
, inode
, 0 /* not truncate */ );
1062 retval
= journal_end(&th
);
1063 reiserfs_check_path(&path
);
1064 reiserfs_write_unlock(dir
->i_sb
);
1069 err
= journal_end(&th
);
1070 reiserfs_check_path(&path
);
1074 reiserfs_write_unlock(dir
->i_sb
);
1078 static int reiserfs_symlink(struct inode
*parent_dir
,
1079 struct dentry
*dentry
, const char *symname
)
1082 struct inode
*inode
;
1085 struct reiserfs_transaction_handle th
;
1086 struct reiserfs_security_handle security
;
1087 int mode
= S_IFLNK
| S_IRWXUGO
;
1089 * We need blocks for transaction + (user+group)*(quotas for
1090 * new inode + update of quota for directory owner)
1093 JOURNAL_PER_BALANCE_CNT
* 3 +
1094 2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir
->i_sb
) +
1095 REISERFS_QUOTA_TRANS_BLOCKS(parent_dir
->i_sb
));
1097 dquot_initialize(parent_dir
);
1099 if (!(inode
= new_inode(parent_dir
->i_sb
))) {
1102 new_inode_init(inode
, parent_dir
, mode
);
1104 retval
= reiserfs_security_init(parent_dir
, inode
, &dentry
->d_name
,
1107 drop_new_inode(inode
);
1110 jbegin_count
+= retval
;
1112 reiserfs_write_lock(parent_dir
->i_sb
);
1113 item_len
= ROUND_UP(strlen(symname
));
1114 if (item_len
> MAX_DIRECT_ITEM_LEN(parent_dir
->i_sb
->s_blocksize
)) {
1115 retval
= -ENAMETOOLONG
;
1116 drop_new_inode(inode
);
1120 name
= kmalloc(item_len
, GFP_NOFS
);
1122 drop_new_inode(inode
);
1126 memcpy(name
, symname
, strlen(symname
));
1127 padd_item(name
, item_len
, strlen(symname
));
1129 retval
= journal_begin(&th
, parent_dir
->i_sb
, jbegin_count
);
1131 drop_new_inode(inode
);
1137 reiserfs_new_inode(&th
, parent_dir
, mode
, name
, strlen(symname
),
1138 dentry
, inode
, &security
);
1140 if (retval
) { /* reiserfs_new_inode iputs for us */
1144 reiserfs_update_inode_transaction(inode
);
1145 reiserfs_update_inode_transaction(parent_dir
);
1147 inode
->i_op
= &reiserfs_symlink_inode_operations
;
1148 inode
->i_mapping
->a_ops
= &reiserfs_address_space_operations
;
1150 retval
= reiserfs_add_entry(&th
, parent_dir
, dentry
->d_name
.name
,
1151 dentry
->d_name
.len
, inode
, 1 /*visible */ );
1155 reiserfs_update_sd(&th
, inode
);
1156 err
= journal_end(&th
);
1159 unlock_new_inode(inode
);
1164 unlock_new_inode(inode
);
1165 d_instantiate(dentry
, inode
);
1166 retval
= journal_end(&th
);
1168 reiserfs_write_unlock(parent_dir
->i_sb
);
1172 static int reiserfs_link(struct dentry
*old_dentry
, struct inode
*dir
,
1173 struct dentry
*dentry
)
1176 struct inode
*inode
= old_dentry
->d_inode
;
1177 struct reiserfs_transaction_handle th
;
1179 * We need blocks for transaction + update of quotas for
1180 * the owners of the directory
1183 JOURNAL_PER_BALANCE_CNT
* 3 +
1184 2 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
1186 dquot_initialize(dir
);
1188 reiserfs_write_lock(dir
->i_sb
);
1189 if (inode
->i_nlink
>= REISERFS_LINK_MAX
) {
1190 /* FIXME: sd_nlink is 32 bit for new files */
1191 reiserfs_write_unlock(dir
->i_sb
);
1195 /* inc before scheduling so reiserfs_unlink knows we are here */
1198 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
1201 reiserfs_write_unlock(dir
->i_sb
);
1205 /* create new entry */
1207 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
1208 dentry
->d_name
.len
, inode
, 1 /*visible */ );
1210 reiserfs_update_inode_transaction(inode
);
1211 reiserfs_update_inode_transaction(dir
);
1216 err
= journal_end(&th
);
1217 reiserfs_write_unlock(dir
->i_sb
);
1218 return err
? err
: retval
;
1221 inode
->i_ctime
= CURRENT_TIME_SEC
;
1222 reiserfs_update_sd(&th
, inode
);
1225 d_instantiate(dentry
, inode
);
1226 retval
= journal_end(&th
);
1227 reiserfs_write_unlock(dir
->i_sb
);
1231 /* de contains information pointing to an entry which */
1232 static int de_still_valid(const char *name
, int len
,
1233 struct reiserfs_dir_entry
*de
)
1235 struct reiserfs_dir_entry tmp
= *de
;
1237 /* recalculate pointer to name and name length */
1238 set_de_name_and_namelen(&tmp
);
1239 /* FIXME: could check more */
1240 if (tmp
.de_namelen
!= len
|| memcmp(name
, de
->de_name
, len
))
1245 static int entry_points_to_object(const char *name
, int len
,
1246 struct reiserfs_dir_entry
*de
,
1247 struct inode
*inode
)
1249 if (!de_still_valid(name
, len
, de
))
1253 if (!de_visible(de
->de_deh
+ de
->de_entry_num
))
1254 reiserfs_panic(inode
->i_sb
, "vs-7042",
1255 "entry must be visible");
1256 return (de
->de_objectid
== inode
->i_ino
) ? 1 : 0;
1259 /* this must be added hidden entry */
1260 if (de_visible(de
->de_deh
+ de
->de_entry_num
))
1261 reiserfs_panic(NULL
, "vs-7043", "entry must be visible");
1266 /* sets key of objectid the entry has to point to */
1267 static void set_ino_in_dir_entry(struct reiserfs_dir_entry
*de
,
1268 struct reiserfs_key
*key
)
1270 /* JDM These operations are endian safe - both are le */
1271 de
->de_deh
[de
->de_entry_num
].deh_dir_id
= key
->k_dir_id
;
1272 de
->de_deh
[de
->de_entry_num
].deh_objectid
= key
->k_objectid
;
1276 * process, that is going to call fix_nodes/do_balance must hold only
1277 * one path. If it holds 2 or more, it can get into endless waiting in
1278 * get_empty_nodes or its clones
1280 static int reiserfs_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1281 struct inode
*new_dir
, struct dentry
*new_dentry
)
1284 INITIALIZE_PATH(old_entry_path
);
1285 INITIALIZE_PATH(new_entry_path
);
1286 INITIALIZE_PATH(dot_dot_entry_path
);
1287 struct item_head new_entry_ih
, old_entry_ih
, dot_dot_ih
;
1288 struct reiserfs_dir_entry old_de
, new_de
, dot_dot_de
;
1289 struct inode
*old_inode
, *new_dentry_inode
;
1290 struct reiserfs_transaction_handle th
;
1292 umode_t old_inode_mode
;
1293 unsigned long savelink
= 1;
1294 struct timespec ctime
;
1297 * three balancings: (1) old name removal, (2) new name insertion
1298 * and (3) maybe "save" link insertion
1299 * stat data updates: (1) old directory,
1300 * (2) new directory and (3) maybe old object stat data (when it is
1301 * directory) and (4) maybe stat data of object to which new entry
1302 * pointed initially and (5) maybe block containing ".." of
1304 * quota updates: two parent directories
1307 JOURNAL_PER_BALANCE_CNT
* 3 + 5 +
1308 4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir
->i_sb
);
1310 dquot_initialize(old_dir
);
1311 dquot_initialize(new_dir
);
1313 old_inode
= old_dentry
->d_inode
;
1314 new_dentry_inode
= new_dentry
->d_inode
;
1317 * make sure that oldname still exists and points to an object we
1318 * are going to rename
1320 old_de
.de_gen_number_bit_string
= NULL
;
1321 reiserfs_write_lock(old_dir
->i_sb
);
1323 reiserfs_find_entry(old_dir
, old_dentry
->d_name
.name
,
1324 old_dentry
->d_name
.len
, &old_entry_path
,
1326 pathrelse(&old_entry_path
);
1327 if (retval
== IO_ERROR
) {
1328 reiserfs_write_unlock(old_dir
->i_sb
);
1332 if (retval
!= NAME_FOUND
|| old_de
.de_objectid
!= old_inode
->i_ino
) {
1333 reiserfs_write_unlock(old_dir
->i_sb
);
1337 old_inode_mode
= old_inode
->i_mode
;
1338 if (S_ISDIR(old_inode_mode
)) {
1340 * make sure that directory being renamed has correct ".."
1341 * and that its new parent directory has not too many links
1344 if (new_dentry_inode
) {
1345 if (!reiserfs_empty_dir(new_dentry_inode
)) {
1346 reiserfs_write_unlock(old_dir
->i_sb
);
1352 * directory is renamed, its parent directory will be changed,
1353 * so find ".." entry
1355 dot_dot_de
.de_gen_number_bit_string
= NULL
;
1357 reiserfs_find_entry(old_inode
, "..", 2, &dot_dot_entry_path
,
1359 pathrelse(&dot_dot_entry_path
);
1360 if (retval
!= NAME_FOUND
) {
1361 reiserfs_write_unlock(old_dir
->i_sb
);
1365 /* inode number of .. must equal old_dir->i_ino */
1366 if (dot_dot_de
.de_objectid
!= old_dir
->i_ino
) {
1367 reiserfs_write_unlock(old_dir
->i_sb
);
1372 retval
= journal_begin(&th
, old_dir
->i_sb
, jbegin_count
);
1374 reiserfs_write_unlock(old_dir
->i_sb
);
1378 /* add new entry (or find the existing one) */
1380 reiserfs_add_entry(&th
, new_dir
, new_dentry
->d_name
.name
,
1381 new_dentry
->d_name
.len
, old_inode
, 0);
1382 if (retval
== -EEXIST
) {
1383 if (!new_dentry_inode
) {
1384 reiserfs_panic(old_dir
->i_sb
, "vs-7050",
1385 "new entry is found, new inode == 0");
1387 } else if (retval
) {
1388 int err
= journal_end(&th
);
1389 reiserfs_write_unlock(old_dir
->i_sb
);
1390 return err
? err
: retval
;
1393 reiserfs_update_inode_transaction(old_dir
);
1394 reiserfs_update_inode_transaction(new_dir
);
1397 * this makes it so an fsync on an open fd for the old name will
1398 * commit the rename operation
1400 reiserfs_update_inode_transaction(old_inode
);
1402 if (new_dentry_inode
)
1403 reiserfs_update_inode_transaction(new_dentry_inode
);
1407 * look for old name using corresponding entry key
1408 * (found by reiserfs_find_entry)
1411 search_by_entry_key(new_dir
->i_sb
, &old_de
.de_entry_key
,
1413 &old_de
)) != NAME_FOUND
) {
1414 pathrelse(&old_entry_path
);
1416 reiserfs_write_unlock(old_dir
->i_sb
);
1420 copy_item_head(&old_entry_ih
, tp_item_head(&old_entry_path
));
1422 reiserfs_prepare_for_journal(old_inode
->i_sb
, old_de
.de_bh
, 1);
1424 /* look for new name by reiserfs_find_entry */
1425 new_de
.de_gen_number_bit_string
= NULL
;
1427 reiserfs_find_entry(new_dir
, new_dentry
->d_name
.name
,
1428 new_dentry
->d_name
.len
, &new_entry_path
,
1431 * reiserfs_add_entry should not return IO_ERROR,
1432 * because it is called with essentially same parameters from
1433 * reiserfs_add_entry above, and we'll catch any i/o errors
1434 * before we get here.
1436 if (retval
!= NAME_FOUND_INVISIBLE
&& retval
!= NAME_FOUND
) {
1437 pathrelse(&new_entry_path
);
1438 pathrelse(&old_entry_path
);
1440 reiserfs_write_unlock(old_dir
->i_sb
);
1444 copy_item_head(&new_entry_ih
, tp_item_head(&new_entry_path
));
1446 reiserfs_prepare_for_journal(old_inode
->i_sb
, new_de
.de_bh
, 1);
1448 if (S_ISDIR(old_inode
->i_mode
)) {
1450 search_by_entry_key(new_dir
->i_sb
,
1451 &dot_dot_de
.de_entry_key
,
1452 &dot_dot_entry_path
,
1453 &dot_dot_de
)) != NAME_FOUND
) {
1454 pathrelse(&dot_dot_entry_path
);
1455 pathrelse(&new_entry_path
);
1456 pathrelse(&old_entry_path
);
1458 reiserfs_write_unlock(old_dir
->i_sb
);
1461 copy_item_head(&dot_dot_ih
,
1462 tp_item_head(&dot_dot_entry_path
));
1463 /* node containing ".." gets into transaction */
1464 reiserfs_prepare_for_journal(old_inode
->i_sb
,
1465 dot_dot_de
.de_bh
, 1);
1468 * we should check seals here, not do
1469 * this stuff, yes? Then, having
1470 * gathered everything into RAM we
1471 * should lock the buffers, yes? -Hans
1474 * probably. our rename needs to hold more
1475 * than one path at once. The seals would
1476 * have to be written to deal with multi-path
1480 * sanity checking before doing the rename - avoid races many
1481 * of the above checks could have scheduled. We have to be
1482 * sure our items haven't been shifted by another process.
1484 if (item_moved(&new_entry_ih
, &new_entry_path
) ||
1485 !entry_points_to_object(new_dentry
->d_name
.name
,
1486 new_dentry
->d_name
.len
,
1487 &new_de
, new_dentry_inode
) ||
1488 item_moved(&old_entry_ih
, &old_entry_path
) ||
1489 !entry_points_to_object(old_dentry
->d_name
.name
,
1490 old_dentry
->d_name
.len
,
1491 &old_de
, old_inode
)) {
1492 reiserfs_restore_prepared_buffer(old_inode
->i_sb
,
1494 reiserfs_restore_prepared_buffer(old_inode
->i_sb
,
1496 if (S_ISDIR(old_inode_mode
))
1497 reiserfs_restore_prepared_buffer(old_inode
->
1503 if (S_ISDIR(old_inode_mode
)) {
1504 if (item_moved(&dot_dot_ih
, &dot_dot_entry_path
) ||
1505 !entry_points_to_object("..", 2, &dot_dot_de
,
1507 reiserfs_restore_prepared_buffer(old_inode
->
1510 reiserfs_restore_prepared_buffer(old_inode
->
1513 reiserfs_restore_prepared_buffer(old_inode
->
1521 RFALSE(S_ISDIR(old_inode_mode
) &&
1522 !buffer_journal_prepared(dot_dot_de
.de_bh
), "");
1528 * ok, all the changes can be done in one fell swoop when we
1529 * have claimed all the buffers needed.
1532 mark_de_visible(new_de
.de_deh
+ new_de
.de_entry_num
);
1533 set_ino_in_dir_entry(&new_de
, INODE_PKEY(old_inode
));
1534 journal_mark_dirty(&th
, new_de
.de_bh
);
1536 mark_de_hidden(old_de
.de_deh
+ old_de
.de_entry_num
);
1537 journal_mark_dirty(&th
, old_de
.de_bh
);
1538 ctime
= CURRENT_TIME_SEC
;
1539 old_dir
->i_ctime
= old_dir
->i_mtime
= ctime
;
1540 new_dir
->i_ctime
= new_dir
->i_mtime
= ctime
;
1542 * thanks to Alex Adriaanse <alex_a@caltech.edu> for patch
1543 * which adds ctime update of renamed object
1545 old_inode
->i_ctime
= ctime
;
1547 if (new_dentry_inode
) {
1548 /* adjust link number of the victim */
1549 if (S_ISDIR(new_dentry_inode
->i_mode
)) {
1550 clear_nlink(new_dentry_inode
);
1552 drop_nlink(new_dentry_inode
);
1554 new_dentry_inode
->i_ctime
= ctime
;
1555 savelink
= new_dentry_inode
->i_nlink
;
1558 if (S_ISDIR(old_inode_mode
)) {
1559 /* adjust ".." of renamed directory */
1560 set_ino_in_dir_entry(&dot_dot_de
, INODE_PKEY(new_dir
));
1561 journal_mark_dirty(&th
, dot_dot_de
.de_bh
);
1564 * there (in new_dir) was no directory, so it got new link
1565 * (".." of renamed directory)
1567 if (!new_dentry_inode
)
1568 INC_DIR_INODE_NLINK(new_dir
);
1570 /* old directory lost one link - ".. " of renamed directory */
1571 DEC_DIR_INODE_NLINK(old_dir
);
1574 * looks like in 2.3.99pre3 brelse is atomic.
1575 * so we can use pathrelse
1577 pathrelse(&new_entry_path
);
1578 pathrelse(&dot_dot_entry_path
);
1581 * FIXME: this reiserfs_cut_from_item's return value may screw up
1582 * anybody, but it will panic if will not be able to find the
1583 * entry. This needs one more clean up
1585 if (reiserfs_cut_from_item
1586 (&th
, &old_entry_path
, &(old_de
.de_entry_key
), old_dir
, NULL
,
1588 reiserfs_error(old_dir
->i_sb
, "vs-7060",
1589 "couldn't not cut old name. Fsck later?");
1591 old_dir
->i_size
-= DEH_SIZE
+ old_de
.de_entrylen
;
1593 reiserfs_update_sd(&th
, old_dir
);
1594 reiserfs_update_sd(&th
, new_dir
);
1595 reiserfs_update_sd(&th
, old_inode
);
1597 if (new_dentry_inode
) {
1599 add_save_link(&th
, new_dentry_inode
,
1600 0 /* not truncate */ );
1601 reiserfs_update_sd(&th
, new_dentry_inode
);
1604 retval
= journal_end(&th
);
1605 reiserfs_write_unlock(old_dir
->i_sb
);
1609 /* directories can handle most operations... */
1610 const struct inode_operations reiserfs_dir_inode_operations
= {
1611 .create
= reiserfs_create
,
1612 .lookup
= reiserfs_lookup
,
1613 .link
= reiserfs_link
,
1614 .unlink
= reiserfs_unlink
,
1615 .symlink
= reiserfs_symlink
,
1616 .mkdir
= reiserfs_mkdir
,
1617 .rmdir
= reiserfs_rmdir
,
1618 .mknod
= reiserfs_mknod
,
1619 .rename
= reiserfs_rename
,
1620 .setattr
= reiserfs_setattr
,
1621 .setxattr
= reiserfs_setxattr
,
1622 .getxattr
= reiserfs_getxattr
,
1623 .listxattr
= reiserfs_listxattr
,
1624 .removexattr
= reiserfs_removexattr
,
1625 .permission
= reiserfs_permission
,
1626 .get_acl
= reiserfs_get_acl
,
1627 .set_acl
= reiserfs_set_acl
,
1631 * symlink operations.. same as page_symlink_inode_operations, with xattr
1634 const struct inode_operations reiserfs_symlink_inode_operations
= {
1635 .readlink
= generic_readlink
,
1636 .follow_link
= page_follow_link_light
,
1637 .put_link
= page_put_link
,
1638 .setattr
= reiserfs_setattr
,
1639 .setxattr
= reiserfs_setxattr
,
1640 .getxattr
= reiserfs_getxattr
,
1641 .listxattr
= reiserfs_listxattr
,
1642 .removexattr
= reiserfs_removexattr
,
1643 .permission
= reiserfs_permission
,
1647 * special file operations.. just xattr/acl stuff
1649 const struct inode_operations reiserfs_special_inode_operations
= {
1650 .setattr
= reiserfs_setattr
,
1651 .setxattr
= reiserfs_setxattr
,
1652 .getxattr
= reiserfs_getxattr
,
1653 .listxattr
= reiserfs_listxattr
,
1654 .removexattr
= reiserfs_removexattr
,
1655 .permission
= reiserfs_permission
,
1656 .get_acl
= reiserfs_get_acl
,
1657 .set_acl
= reiserfs_set_acl
,