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/reiserfs_fs.h>
17 #include <linux/reiserfs_acl.h>
18 #include <linux/reiserfs_xattr.h>
19 #include <linux/quotaops.h>
21 #define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) i->i_nlink=1; }
22 #define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) drop_nlink(i);
24 // directory item contains array of entry headers. This performs
25 // binary search through that array
26 static int bin_search_in_dir_item(struct reiserfs_dir_entry
*de
, loff_t off
)
28 struct item_head
*ih
= de
->de_ih
;
29 struct reiserfs_de_head
*deh
= de
->de_deh
;
30 int rbound
, lbound
, j
;
33 rbound
= I_ENTRY_COUNT(ih
) - 1;
35 for (j
= (rbound
+ lbound
) / 2; lbound
<= rbound
;
36 j
= (rbound
+ lbound
) / 2) {
37 if (off
< deh_offset(deh
+ j
)) {
41 if (off
> deh_offset(deh
+ j
)) {
45 // this is not name found, but matched third key component
50 de
->de_entry_num
= lbound
;
51 return NAME_NOT_FOUND
;
54 // comment? maybe something like set de to point to what the path points to?
55 static inline void set_de_item_location(struct reiserfs_dir_entry
*de
,
56 struct treepath
*path
)
58 de
->de_bh
= get_last_bh(path
);
59 de
->de_ih
= get_ih(path
);
60 de
->de_deh
= B_I_DEH(de
->de_bh
, de
->de_ih
);
61 de
->de_item_num
= PATH_LAST_POSITION(path
);
64 // de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
65 inline void set_de_name_and_namelen(struct reiserfs_dir_entry
*de
)
67 struct reiserfs_de_head
*deh
= de
->de_deh
+ de
->de_entry_num
;
69 BUG_ON(de
->de_entry_num
>= ih_entry_count(de
->de_ih
));
71 de
->de_entrylen
= entry_length(de
->de_bh
, de
->de_ih
, de
->de_entry_num
);
72 de
->de_namelen
= de
->de_entrylen
- (de_with_sd(deh
) ? SD_SIZE
: 0);
73 de
->de_name
= B_I_PITEM(de
->de_bh
, de
->de_ih
) + deh_location(deh
);
74 if (de
->de_name
[de
->de_namelen
- 1] == 0)
75 de
->de_namelen
= strlen(de
->de_name
);
78 // what entry points to
79 static inline void set_de_object_key(struct reiserfs_dir_entry
*de
)
81 BUG_ON(de
->de_entry_num
>= ih_entry_count(de
->de_ih
));
82 de
->de_dir_id
= deh_dir_id(&(de
->de_deh
[de
->de_entry_num
]));
83 de
->de_objectid
= deh_objectid(&(de
->de_deh
[de
->de_entry_num
]));
86 static inline void store_de_entry_key(struct reiserfs_dir_entry
*de
)
88 struct reiserfs_de_head
*deh
= de
->de_deh
+ de
->de_entry_num
;
90 BUG_ON(de
->de_entry_num
>= ih_entry_count(de
->de_ih
));
92 /* store key of the found entry */
93 de
->de_entry_key
.version
= KEY_FORMAT_3_5
;
94 de
->de_entry_key
.on_disk_key
.k_dir_id
=
95 le32_to_cpu(de
->de_ih
->ih_key
.k_dir_id
);
96 de
->de_entry_key
.on_disk_key
.k_objectid
=
97 le32_to_cpu(de
->de_ih
->ih_key
.k_objectid
);
98 set_cpu_key_k_offset(&(de
->de_entry_key
), deh_offset(deh
));
99 set_cpu_key_k_type(&(de
->de_entry_key
), TYPE_DIRENTRY
);
102 /* We assign a key to each directory item, and place multiple entries
103 in a single directory item. A directory item has a key equal to the
104 key of the first directory entry in it.
106 This function first calls search_by_key, then, if item whose first
107 entry matches is not found it looks for the entry inside directory
108 item found by search_by_key. Fills the path to the entry, and to the
109 entry position in the item
113 /* The function is NOT SCHEDULE-SAFE! */
114 int search_by_entry_key(struct super_block
*sb
, const struct cpu_key
*key
,
115 struct treepath
*path
, struct reiserfs_dir_entry
*de
)
119 retval
= search_item(sb
, key
, path
);
122 if (!PATH_LAST_POSITION(path
)) {
123 reiserfs_error(sb
, "vs-7000", "search_by_key "
124 "returned item position == 0");
128 PATH_LAST_POSITION(path
)--;
138 reiserfs_error(sb
, "vs-7002", "no path to here");
142 set_de_item_location(de
, path
);
144 #ifdef CONFIG_REISERFS_CHECK
145 if (!is_direntry_le_ih(de
->de_ih
) ||
146 COMP_SHORT_KEYS(&(de
->de_ih
->ih_key
), key
)) {
147 print_block(de
->de_bh
, 0, -1, -1);
148 reiserfs_panic(sb
, "vs-7005", "found item %h is not directory "
149 "item or does not belong to the same directory "
150 "as key %K", de
->de_ih
, key
);
152 #endif /* CONFIG_REISERFS_CHECK */
154 /* binary search in directory item by third componen t of the
155 key. sets de->de_entry_num of de */
156 retval
= bin_search_in_dir_item(de
, cpu_key_k_offset(key
));
157 path
->pos_in_item
= de
->de_entry_num
;
158 if (retval
!= NAME_NOT_FOUND
) {
159 // ugly, but rename needs de_bh, de_deh, de_name, de_namelen, de_objectid set
160 set_de_name_and_namelen(de
);
161 set_de_object_key(de
);
166 /* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
168 /* The third component is hashed, and you can choose from more than
169 one hash function. Per directory hashes are not yet implemented
170 but are thought about. This function should be moved to hashes.c
171 Jedi, please do so. -Hans */
173 static __u32
get_third_component(struct super_block
*s
,
174 const char *name
, int len
)
178 if (!len
|| (len
== 1 && name
[0] == '.'))
180 if (len
== 2 && name
[0] == '.' && name
[1] == '.')
181 return DOT_DOT_OFFSET
;
183 res
= REISERFS_SB(s
)->s_hash_function(name
, len
);
185 // take bits from 7-th to 30-th including both bounds
186 res
= GET_HASH_VALUE(res
);
188 // needed to have no names before "." and ".." those have hash
189 // value == 0 and generation conters 1 and 2 accordingly
191 return res
+ MAX_GENERATION_NUMBER
;
194 static int reiserfs_match(struct reiserfs_dir_entry
*de
,
195 const char *name
, int namelen
)
197 int retval
= NAME_NOT_FOUND
;
199 if ((namelen
== de
->de_namelen
) &&
200 !memcmp(de
->de_name
, name
, de
->de_namelen
))
202 (de_visible(de
->de_deh
+ de
->de_entry_num
) ? NAME_FOUND
:
203 NAME_FOUND_INVISIBLE
);
208 /* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
210 /* used when hash collisions exist */
212 static int linear_search_in_dir_item(struct cpu_key
*key
,
213 struct reiserfs_dir_entry
*de
,
214 const char *name
, int namelen
)
216 struct reiserfs_de_head
*deh
= de
->de_deh
;
220 i
= de
->de_entry_num
;
222 if (i
== I_ENTRY_COUNT(de
->de_ih
) ||
223 GET_HASH_VALUE(deh_offset(deh
+ i
)) !=
224 GET_HASH_VALUE(cpu_key_k_offset(key
))) {
228 RFALSE(de
->de_deh
!= B_I_DEH(de
->de_bh
, de
->de_ih
),
229 "vs-7010: array of entry headers not found");
233 for (; i
>= 0; i
--, deh
--) {
234 if (GET_HASH_VALUE(deh_offset(deh
)) !=
235 GET_HASH_VALUE(cpu_key_k_offset(key
))) {
236 // hash value does not match, no need to check whole name
237 return NAME_NOT_FOUND
;
240 /* mark, that this generation number is used */
241 if (de
->de_gen_number_bit_string
)
242 set_bit(GET_GENERATION_NUMBER(deh_offset(deh
)),
243 de
->de_gen_number_bit_string
);
245 // calculate pointer to name and namelen
246 de
->de_entry_num
= i
;
247 set_de_name_and_namelen(de
);
250 reiserfs_match(de
, name
, namelen
)) != NAME_NOT_FOUND
) {
251 // de's de_name, de_namelen, de_recordlen are set. Fill the rest:
253 // key of pointed object
254 set_de_object_key(de
);
256 store_de_entry_key(de
);
258 // retval can be NAME_FOUND or NAME_FOUND_INVISIBLE
263 if (GET_GENERATION_NUMBER(le_ih_k_offset(de
->de_ih
)) == 0)
264 /* we have reached left most entry in the node. In common we
265 have to go to the left neighbor, but if generation counter
266 is 0 already, we know for sure, that there is no name with
267 the same hash value */
268 // FIXME: this work correctly only because hash value can not
269 // be 0. Btw, in case of Yura's hash it is probably possible,
271 return NAME_NOT_FOUND
;
273 RFALSE(de
->de_item_num
,
274 "vs-7015: two diritems of the same directory in one node?");
276 return GOTO_PREVIOUS_ITEM
;
279 // may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
280 // FIXME: should add something like IOERROR
281 static int reiserfs_find_entry(struct inode
*dir
, const char *name
, int namelen
,
282 struct treepath
*path_to_entry
,
283 struct reiserfs_dir_entry
*de
)
285 struct cpu_key key_to_search
;
288 if (namelen
> REISERFS_MAX_NAME(dir
->i_sb
->s_blocksize
))
289 return NAME_NOT_FOUND
;
291 /* we will search for this key in the tree */
292 make_cpu_key(&key_to_search
, dir
,
293 get_third_component(dir
->i_sb
, name
, namelen
),
298 search_by_entry_key(dir
->i_sb
, &key_to_search
,
300 if (retval
== IO_ERROR
) {
301 reiserfs_error(dir
->i_sb
, "zam-7001", "io error");
305 /* compare names for all entries having given hash value */
307 linear_search_in_dir_item(&key_to_search
, de
, name
,
309 if (retval
!= GOTO_PREVIOUS_ITEM
) {
310 /* there is no need to scan directory anymore. Given entry found or does not exist */
311 path_to_entry
->pos_in_item
= de
->de_entry_num
;
315 /* there is left neighboring item of this directory and given entry can be there */
316 set_cpu_key_k_offset(&key_to_search
,
317 le_ih_k_offset(de
->de_ih
) - 1);
318 pathrelse(path_to_entry
);
323 static struct dentry
*reiserfs_lookup(struct inode
*dir
, struct dentry
*dentry
,
324 struct nameidata
*nd
)
327 struct inode
*inode
= NULL
;
328 struct reiserfs_dir_entry de
;
329 INITIALIZE_PATH(path_to_entry
);
331 if (REISERFS_MAX_NAME(dir
->i_sb
->s_blocksize
) < dentry
->d_name
.len
)
332 return ERR_PTR(-ENAMETOOLONG
);
334 reiserfs_write_lock(dir
->i_sb
);
335 de
.de_gen_number_bit_string
= NULL
;
337 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
338 &path_to_entry
, &de
);
339 pathrelse(&path_to_entry
);
340 if (retval
== NAME_FOUND
) {
341 /* Hide the .reiserfs_priv directory */
342 if (reiserfs_xattrs(dir
->i_sb
) &&
343 !old_format_only(dir
->i_sb
) &&
344 REISERFS_SB(dir
->i_sb
)->priv_root
&&
345 REISERFS_SB(dir
->i_sb
)->priv_root
->d_inode
&&
347 le32_to_cpu(INODE_PKEY
348 (REISERFS_SB(dir
->i_sb
)->priv_root
->d_inode
)->
350 reiserfs_write_unlock(dir
->i_sb
);
351 return ERR_PTR(-EACCES
);
355 reiserfs_iget(dir
->i_sb
, (struct cpu_key
*)&(de
.de_dir_id
));
356 if (!inode
|| IS_ERR(inode
)) {
357 reiserfs_write_unlock(dir
->i_sb
);
358 return ERR_PTR(-EACCES
);
361 /* Propagate the private flag so we know we're
362 * in the priv tree */
364 inode
->i_flags
|= S_PRIVATE
;
366 reiserfs_write_unlock(dir
->i_sb
);
367 if (retval
== IO_ERROR
) {
368 return ERR_PTR(-EIO
);
371 return d_splice_alias(inode
, dentry
);
375 ** looks up the dentry of the parent directory for child.
376 ** taken from ext2_get_parent
378 struct dentry
*reiserfs_get_parent(struct dentry
*child
)
381 struct inode
*inode
= NULL
;
382 struct reiserfs_dir_entry de
;
383 INITIALIZE_PATH(path_to_entry
);
384 struct inode
*dir
= child
->d_inode
;
386 if (dir
->i_nlink
== 0) {
387 return ERR_PTR(-ENOENT
);
389 de
.de_gen_number_bit_string
= NULL
;
391 reiserfs_write_lock(dir
->i_sb
);
392 retval
= reiserfs_find_entry(dir
, "..", 2, &path_to_entry
, &de
);
393 pathrelse(&path_to_entry
);
394 if (retval
!= NAME_FOUND
) {
395 reiserfs_write_unlock(dir
->i_sb
);
396 return ERR_PTR(-ENOENT
);
398 inode
= reiserfs_iget(dir
->i_sb
, (struct cpu_key
*)&(de
.de_dir_id
));
399 reiserfs_write_unlock(dir
->i_sb
);
401 return d_obtain_alias(inode
);
404 /* add entry to the directory (entry can be hidden).
406 insert definition of when hidden directories are used here -Hans
408 Does not mark dir inode dirty, do it after successesfull call to it */
410 static int reiserfs_add_entry(struct reiserfs_transaction_handle
*th
,
411 struct inode
*dir
, const char *name
, int namelen
,
412 struct inode
*inode
, int visible
)
414 struct cpu_key entry_key
;
415 struct reiserfs_de_head
*deh
;
416 INITIALIZE_PATH(path
);
417 struct reiserfs_dir_entry de
;
418 DECLARE_BITMAP(bit_string
, MAX_GENERATION_NUMBER
+ 1);
420 char small_buf
[32 + DEH_SIZE
]; /* 48 bytes now and we avoid kmalloc
421 if we create file with short name */
423 int buflen
, paste_size
;
426 BUG_ON(!th
->t_trans_id
);
428 /* cannot allow items to be added into a busy deleted directory */
432 if (namelen
> REISERFS_MAX_NAME(dir
->i_sb
->s_blocksize
))
433 return -ENAMETOOLONG
;
435 /* each entry has unique key. compose it */
436 make_cpu_key(&entry_key
, dir
,
437 get_third_component(dir
->i_sb
, name
, namelen
),
440 /* get memory for composing the entry */
441 buflen
= DEH_SIZE
+ ROUND_UP(namelen
);
442 if (buflen
> sizeof(small_buf
)) {
443 buffer
= kmalloc(buflen
, GFP_NOFS
);
450 (get_inode_sd_version(dir
) ==
451 STAT_DATA_V1
) ? (DEH_SIZE
+ namelen
) : buflen
;
453 /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */
454 deh
= (struct reiserfs_de_head
*)buffer
;
455 deh
->deh_location
= 0; /* JDM Endian safe if 0 */
456 put_deh_offset(deh
, cpu_key_k_offset(&entry_key
));
457 deh
->deh_state
= 0; /* JDM Endian safe if 0 */
458 /* put key (ino analog) to de */
459 deh
->deh_dir_id
= INODE_PKEY(inode
)->k_dir_id
; /* safe: k_dir_id is le */
460 deh
->deh_objectid
= INODE_PKEY(inode
)->k_objectid
; /* safe: k_objectid is le */
463 memcpy((char *)(deh
+ 1), name
, namelen
);
464 /* padd by 0s to the 4 byte boundary */
465 padd_item((char *)(deh
+ 1), ROUND_UP(namelen
), namelen
);
467 /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */
468 mark_de_without_sd(deh
);
469 visible
? mark_de_visible(deh
) : mark_de_hidden(deh
);
471 /* find the proper place for the new entry */
472 memset(bit_string
, 0, sizeof(bit_string
));
473 de
.de_gen_number_bit_string
= bit_string
;
474 retval
= reiserfs_find_entry(dir
, name
, namelen
, &path
, &de
);
475 if (retval
!= NAME_NOT_FOUND
) {
476 if (buffer
!= small_buf
)
480 if (retval
== IO_ERROR
) {
484 if (retval
!= NAME_FOUND
) {
485 reiserfs_error(dir
->i_sb
, "zam-7002",
486 "reiserfs_find_entry() returned "
487 "unexpected value (%d)", retval
);
494 find_first_zero_bit(bit_string
,
495 MAX_GENERATION_NUMBER
+ 1);
496 if (gen_number
> MAX_GENERATION_NUMBER
) {
497 /* there is no free generation number */
498 reiserfs_warning(dir
->i_sb
, "reiserfs-7010",
499 "Congratulations! we have got hash function "
501 if (buffer
!= small_buf
)
506 /* adjust offset of directory enrty */
507 put_deh_offset(deh
, SET_GENERATION_NUMBER(deh_offset(deh
), gen_number
));
508 set_cpu_key_k_offset(&entry_key
, deh_offset(deh
));
510 /* update max-hash-collisions counter in reiserfs_sb_info */
511 PROC_INFO_MAX(th
->t_super
, max_hash_collisions
, gen_number
);
513 if (gen_number
!= 0) { /* we need to re-search for the insertion point */
514 if (search_by_entry_key(dir
->i_sb
, &entry_key
, &path
, &de
) !=
516 reiserfs_warning(dir
->i_sb
, "vs-7032",
517 "entry with this key (%K) already "
518 "exists", &entry_key
);
520 if (buffer
!= small_buf
)
527 /* perform the insertion of the entry that we have prepared */
529 reiserfs_paste_into_item(th
, &path
, &entry_key
, dir
, buffer
,
531 if (buffer
!= small_buf
)
534 reiserfs_check_path(&path
);
538 dir
->i_size
+= paste_size
;
539 dir
->i_mtime
= dir
->i_ctime
= CURRENT_TIME_SEC
;
540 if (!S_ISDIR(inode
->i_mode
) && visible
)
541 // reiserfs_mkdir or reiserfs_rename will do that by itself
542 reiserfs_update_sd(th
, dir
);
544 reiserfs_check_path(&path
);
548 /* quota utility function, call if you've had to abort after calling
549 ** new_inode_init, and have not called reiserfs_new_inode yet.
550 ** This should only be called on inodes that do not have stat data
551 ** inserted into the tree yet.
553 static int drop_new_inode(struct inode
*inode
)
556 make_bad_inode(inode
);
557 inode
->i_flags
|= S_NOQUOTA
;
562 /* utility function that does setup for reiserfs_new_inode.
563 ** DQUOT_INIT needs lots of credits so it's better to have it
564 ** outside of a transaction, so we had to pull some bits of
565 ** reiserfs_new_inode out into this func.
567 static int new_inode_init(struct inode
*inode
, struct inode
*dir
, int mode
)
570 /* the quota init calls have to know who to charge the quota to, so
571 ** we have to set uid and gid here
573 inode
->i_uid
= current_fsuid();
574 inode
->i_mode
= mode
;
575 /* Make inode invalid - just in case we are going to drop it before
576 * the initialization happens */
577 INODE_PKEY(inode
)->k_objectid
= 0;
579 if (dir
->i_mode
& S_ISGID
) {
580 inode
->i_gid
= dir
->i_gid
;
582 inode
->i_mode
|= S_ISGID
;
584 inode
->i_gid
= current_fsgid();
590 static int reiserfs_create(struct inode
*dir
, struct dentry
*dentry
, int mode
,
591 struct nameidata
*nd
)
595 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
597 JOURNAL_PER_BALANCE_CNT
* 2 +
598 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
599 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
600 struct reiserfs_transaction_handle th
;
603 if (!(inode
= new_inode(dir
->i_sb
))) {
606 new_inode_init(inode
, dir
, mode
);
608 locked
= reiserfs_cache_default_acl(dir
);
610 reiserfs_write_lock(dir
->i_sb
);
613 reiserfs_write_lock_xattrs(dir
->i_sb
);
615 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
617 drop_new_inode(inode
);
622 reiserfs_new_inode(&th
, dir
, mode
, NULL
, 0 /*i_size */ , dentry
,
628 reiserfs_write_unlock_xattrs(dir
->i_sb
);
632 inode
->i_op
= &reiserfs_file_inode_operations
;
633 inode
->i_fop
= &reiserfs_file_operations
;
634 inode
->i_mapping
->a_ops
= &reiserfs_address_space_operations
;
637 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
638 dentry
->d_name
.len
, inode
, 1 /*visible */ );
642 reiserfs_update_sd(&th
, inode
);
643 err
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
646 unlock_new_inode(inode
);
650 reiserfs_update_inode_transaction(inode
);
651 reiserfs_update_inode_transaction(dir
);
653 d_instantiate(dentry
, inode
);
654 unlock_new_inode(inode
);
655 retval
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
659 reiserfs_write_unlock_xattrs(dir
->i_sb
);
660 reiserfs_write_unlock(dir
->i_sb
);
664 static int reiserfs_mknod(struct inode
*dir
, struct dentry
*dentry
, int mode
,
669 struct reiserfs_transaction_handle th
;
670 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
672 JOURNAL_PER_BALANCE_CNT
* 3 +
673 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
674 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
677 if (!new_valid_dev(rdev
))
680 if (!(inode
= new_inode(dir
->i_sb
))) {
683 new_inode_init(inode
, dir
, mode
);
685 locked
= reiserfs_cache_default_acl(dir
);
687 reiserfs_write_lock(dir
->i_sb
);
690 reiserfs_write_lock_xattrs(dir
->i_sb
);
692 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
694 drop_new_inode(inode
);
699 reiserfs_new_inode(&th
, dir
, mode
, NULL
, 0 /*i_size */ , dentry
,
706 reiserfs_write_unlock_xattrs(dir
->i_sb
);
710 inode
->i_op
= &reiserfs_special_inode_operations
;
711 init_special_inode(inode
, inode
->i_mode
, rdev
);
713 //FIXME: needed for block and char devices only
714 reiserfs_update_sd(&th
, inode
);
716 reiserfs_update_inode_transaction(inode
);
717 reiserfs_update_inode_transaction(dir
);
720 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
721 dentry
->d_name
.len
, inode
, 1 /*visible */ );
725 reiserfs_update_sd(&th
, inode
);
726 err
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
729 unlock_new_inode(inode
);
734 d_instantiate(dentry
, inode
);
735 unlock_new_inode(inode
);
736 retval
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
740 reiserfs_write_unlock_xattrs(dir
->i_sb
);
741 reiserfs_write_unlock(dir
->i_sb
);
745 static int reiserfs_mkdir(struct inode
*dir
, struct dentry
*dentry
, int mode
)
749 struct reiserfs_transaction_handle th
;
750 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
752 JOURNAL_PER_BALANCE_CNT
* 3 +
753 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir
->i_sb
) +
754 REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
));
757 #ifdef DISPLACE_NEW_PACKING_LOCALITIES
758 /* set flag that new packing locality created and new blocks for the content * of that directory are not displaced yet */
759 REISERFS_I(dir
)->new_packing_locality
= 1;
761 mode
= S_IFDIR
| mode
;
762 if (!(inode
= new_inode(dir
->i_sb
))) {
765 new_inode_init(inode
, dir
, mode
);
767 locked
= reiserfs_cache_default_acl(dir
);
769 reiserfs_write_lock(dir
->i_sb
);
771 reiserfs_write_lock_xattrs(dir
->i_sb
);
773 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
775 drop_new_inode(inode
);
779 /* inc the link count now, so another writer doesn't overflow it while
780 ** we sleep later on.
782 INC_DIR_INODE_NLINK(dir
)
784 retval
= reiserfs_new_inode(&th
, dir
, mode
, NULL
/*symlink */ ,
785 old_format_only(dir
->i_sb
) ?
786 EMPTY_DIR_SIZE_V1
: EMPTY_DIR_SIZE
,
794 reiserfs_write_unlock_xattrs(dir
->i_sb
);
798 reiserfs_update_inode_transaction(inode
);
799 reiserfs_update_inode_transaction(dir
);
801 inode
->i_op
= &reiserfs_dir_inode_operations
;
802 inode
->i_fop
= &reiserfs_dir_operations
;
804 // note, _this_ add_entry will not update dir's stat data
806 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
807 dentry
->d_name
.len
, inode
, 1 /*visible */ );
811 DEC_DIR_INODE_NLINK(dir
);
812 reiserfs_update_sd(&th
, inode
);
813 err
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
816 unlock_new_inode(inode
);
820 // the above add_entry did not update dir's stat data
821 reiserfs_update_sd(&th
, dir
);
823 d_instantiate(dentry
, inode
);
824 unlock_new_inode(inode
);
825 retval
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
828 reiserfs_write_unlock_xattrs(dir
->i_sb
);
829 reiserfs_write_unlock(dir
->i_sb
);
833 static inline int reiserfs_empty_dir(struct inode
*inode
)
835 /* we can cheat because an old format dir cannot have
836 ** EMPTY_DIR_SIZE, and a new format dir cannot have
837 ** EMPTY_DIR_SIZE_V1. So, if the inode is either size,
838 ** regardless of disk format version, the directory is empty.
840 if (inode
->i_size
!= EMPTY_DIR_SIZE
&&
841 inode
->i_size
!= EMPTY_DIR_SIZE_V1
) {
847 static int reiserfs_rmdir(struct inode
*dir
, struct dentry
*dentry
)
851 struct reiserfs_transaction_handle th
;
853 INITIALIZE_PATH(path
);
854 struct reiserfs_dir_entry de
;
856 /* we will be doing 2 balancings and update 2 stat data, we change quotas
857 * of the owner of the directory and of the owner of the parent directory.
858 * The quota structure is possibly deleted only on last iput => outside
859 * of this transaction */
861 JOURNAL_PER_BALANCE_CNT
* 2 + 2 +
862 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
864 reiserfs_write_lock(dir
->i_sb
);
865 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
869 de
.de_gen_number_bit_string
= NULL
;
871 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
872 &path
, &de
)) == NAME_NOT_FOUND
) {
875 } else if (retval
== IO_ERROR
) {
880 inode
= dentry
->d_inode
;
882 reiserfs_update_inode_transaction(inode
);
883 reiserfs_update_inode_transaction(dir
);
885 if (de
.de_objectid
!= inode
->i_ino
) {
886 // FIXME: compare key of an object and a key found in the
891 if (!reiserfs_empty_dir(inode
)) {
896 /* cut entry from dir directory */
897 retval
= reiserfs_cut_from_item(&th
, &path
, &(de
.de_entry_key
), dir
, NULL
, /* page */
898 0 /*new file size - not used here */ );
902 if (inode
->i_nlink
!= 2 && inode
->i_nlink
!= 1)
903 reiserfs_error(inode
->i_sb
, "reiserfs-7040",
904 "empty directory has nlink != 2 (%d)",
908 inode
->i_ctime
= dir
->i_ctime
= dir
->i_mtime
= CURRENT_TIME_SEC
;
909 reiserfs_update_sd(&th
, inode
);
911 DEC_DIR_INODE_NLINK(dir
)
912 dir
->i_size
-= (DEH_SIZE
+ de
.de_entrylen
);
913 reiserfs_update_sd(&th
, dir
);
915 /* prevent empty directory from getting lost */
916 add_save_link(&th
, inode
, 0 /* not truncate */ );
918 retval
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
919 reiserfs_check_path(&path
);
921 reiserfs_write_unlock(dir
->i_sb
);
925 /* we must release path, because we did not call
926 reiserfs_cut_from_item, or reiserfs_cut_from_item does not
927 release path if operation was not complete */
929 err
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
930 reiserfs_write_unlock(dir
->i_sb
);
931 return err
? err
: retval
;
934 static int reiserfs_unlink(struct inode
*dir
, struct dentry
*dentry
)
938 struct reiserfs_dir_entry de
;
939 INITIALIZE_PATH(path
);
940 struct reiserfs_transaction_handle th
;
942 unsigned long savelink
;
944 inode
= dentry
->d_inode
;
946 /* in this transaction we can be doing at max two balancings and update
947 * two stat datas, we change quotas of the owner of the directory and of
948 * the owner of the parent directory. The quota structure is possibly
949 * deleted only on iput => outside of this transaction */
951 JOURNAL_PER_BALANCE_CNT
* 2 + 2 +
952 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
954 reiserfs_write_lock(dir
->i_sb
);
955 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
959 de
.de_gen_number_bit_string
= NULL
;
961 reiserfs_find_entry(dir
, dentry
->d_name
.name
, dentry
->d_name
.len
,
962 &path
, &de
)) == NAME_NOT_FOUND
) {
965 } else if (retval
== IO_ERROR
) {
970 reiserfs_update_inode_transaction(inode
);
971 reiserfs_update_inode_transaction(dir
);
973 if (de
.de_objectid
!= inode
->i_ino
) {
974 // FIXME: compare key of an object and a key found in the
980 if (!inode
->i_nlink
) {
981 reiserfs_warning(inode
->i_sb
, "reiserfs-7042",
982 "deleting nonexistent file (%lu), %d",
983 inode
->i_ino
, inode
->i_nlink
);
990 * we schedule before doing the add_save_link call, save the link
991 * count so we don't race
993 savelink
= inode
->i_nlink
;
996 reiserfs_cut_from_item(&th
, &path
, &(de
.de_entry_key
), dir
, NULL
,
1002 inode
->i_ctime
= CURRENT_TIME_SEC
;
1003 reiserfs_update_sd(&th
, inode
);
1005 dir
->i_size
-= (de
.de_entrylen
+ DEH_SIZE
);
1006 dir
->i_ctime
= dir
->i_mtime
= CURRENT_TIME_SEC
;
1007 reiserfs_update_sd(&th
, dir
);
1010 /* prevent file from getting lost */
1011 add_save_link(&th
, inode
, 0 /* not truncate */ );
1013 retval
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
1014 reiserfs_check_path(&path
);
1015 reiserfs_write_unlock(dir
->i_sb
);
1020 err
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
1021 reiserfs_check_path(&path
);
1025 reiserfs_write_unlock(dir
->i_sb
);
1029 static int reiserfs_symlink(struct inode
*parent_dir
,
1030 struct dentry
*dentry
, const char *symname
)
1033 struct inode
*inode
;
1036 struct reiserfs_transaction_handle th
;
1037 int mode
= S_IFLNK
| S_IRWXUGO
;
1038 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
1040 JOURNAL_PER_BALANCE_CNT
* 3 +
1041 2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir
->i_sb
) +
1042 REISERFS_QUOTA_TRANS_BLOCKS(parent_dir
->i_sb
));
1044 if (!(inode
= new_inode(parent_dir
->i_sb
))) {
1047 new_inode_init(inode
, parent_dir
, mode
);
1049 reiserfs_write_lock(parent_dir
->i_sb
);
1050 item_len
= ROUND_UP(strlen(symname
));
1051 if (item_len
> MAX_DIRECT_ITEM_LEN(parent_dir
->i_sb
->s_blocksize
)) {
1052 retval
= -ENAMETOOLONG
;
1053 drop_new_inode(inode
);
1057 name
= kmalloc(item_len
, GFP_NOFS
);
1059 drop_new_inode(inode
);
1063 memcpy(name
, symname
, strlen(symname
));
1064 padd_item(name
, item_len
, strlen(symname
));
1066 /* We would inherit the default ACL here, but symlinks don't get ACLs */
1068 retval
= journal_begin(&th
, parent_dir
->i_sb
, jbegin_count
);
1070 drop_new_inode(inode
);
1076 reiserfs_new_inode(&th
, parent_dir
, mode
, name
, strlen(symname
),
1079 if (retval
) { /* reiserfs_new_inode iputs for us */
1083 reiserfs_update_inode_transaction(inode
);
1084 reiserfs_update_inode_transaction(parent_dir
);
1086 inode
->i_op
= &reiserfs_symlink_inode_operations
;
1087 inode
->i_mapping
->a_ops
= &reiserfs_address_space_operations
;
1089 // must be sure this inode is written with this transaction
1091 //reiserfs_update_sd (&th, inode, READ_BLOCKS);
1093 retval
= reiserfs_add_entry(&th
, parent_dir
, dentry
->d_name
.name
,
1094 dentry
->d_name
.len
, inode
, 1 /*visible */ );
1098 reiserfs_update_sd(&th
, inode
);
1099 err
= journal_end(&th
, parent_dir
->i_sb
, jbegin_count
);
1102 unlock_new_inode(inode
);
1107 d_instantiate(dentry
, inode
);
1108 unlock_new_inode(inode
);
1109 retval
= journal_end(&th
, parent_dir
->i_sb
, jbegin_count
);
1111 reiserfs_write_unlock(parent_dir
->i_sb
);
1115 static int reiserfs_link(struct dentry
*old_dentry
, struct inode
*dir
,
1116 struct dentry
*dentry
)
1119 struct inode
*inode
= old_dentry
->d_inode
;
1120 struct reiserfs_transaction_handle th
;
1121 /* We need blocks for transaction + update of quotas for the owners of the directory */
1123 JOURNAL_PER_BALANCE_CNT
* 3 +
1124 2 * REISERFS_QUOTA_TRANS_BLOCKS(dir
->i_sb
);
1126 reiserfs_write_lock(dir
->i_sb
);
1127 if (inode
->i_nlink
>= REISERFS_LINK_MAX
) {
1128 //FIXME: sd_nlink is 32 bit for new files
1129 reiserfs_write_unlock(dir
->i_sb
);
1132 if (inode
->i_nlink
== 0) {
1133 reiserfs_write_unlock(dir
->i_sb
);
1137 /* inc before scheduling so reiserfs_unlink knows we are here */
1140 retval
= journal_begin(&th
, dir
->i_sb
, jbegin_count
);
1143 reiserfs_write_unlock(dir
->i_sb
);
1147 /* create new entry */
1149 reiserfs_add_entry(&th
, dir
, dentry
->d_name
.name
,
1150 dentry
->d_name
.len
, inode
, 1 /*visible */ );
1152 reiserfs_update_inode_transaction(inode
);
1153 reiserfs_update_inode_transaction(dir
);
1158 err
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
1159 reiserfs_write_unlock(dir
->i_sb
);
1160 return err
? err
: retval
;
1163 inode
->i_ctime
= CURRENT_TIME_SEC
;
1164 reiserfs_update_sd(&th
, inode
);
1166 atomic_inc(&inode
->i_count
);
1167 d_instantiate(dentry
, inode
);
1168 retval
= journal_end(&th
, dir
->i_sb
, jbegin_count
);
1169 reiserfs_write_unlock(dir
->i_sb
);
1173 // de contains information pointing to an entry which
1174 static int de_still_valid(const char *name
, int len
,
1175 struct reiserfs_dir_entry
*de
)
1177 struct reiserfs_dir_entry tmp
= *de
;
1179 // recalculate pointer to name and name length
1180 set_de_name_and_namelen(&tmp
);
1181 // FIXME: could check more
1182 if (tmp
.de_namelen
!= len
|| memcmp(name
, de
->de_name
, len
))
1187 static int entry_points_to_object(const char *name
, int len
,
1188 struct reiserfs_dir_entry
*de
,
1189 struct inode
*inode
)
1191 if (!de_still_valid(name
, len
, de
))
1195 if (!de_visible(de
->de_deh
+ de
->de_entry_num
))
1196 reiserfs_panic(inode
->i_sb
, "vs-7042",
1197 "entry must be visible");
1198 return (de
->de_objectid
== inode
->i_ino
) ? 1 : 0;
1201 /* this must be added hidden entry */
1202 if (de_visible(de
->de_deh
+ de
->de_entry_num
))
1203 reiserfs_panic(NULL
, "vs-7043", "entry must be visible");
1208 /* sets key of objectid the entry has to point to */
1209 static void set_ino_in_dir_entry(struct reiserfs_dir_entry
*de
,
1210 struct reiserfs_key
*key
)
1212 /* JDM These operations are endian safe - both are le */
1213 de
->de_deh
[de
->de_entry_num
].deh_dir_id
= key
->k_dir_id
;
1214 de
->de_deh
[de
->de_entry_num
].deh_objectid
= key
->k_objectid
;
1218 * process, that is going to call fix_nodes/do_balance must hold only
1219 * one path. If it holds 2 or more, it can get into endless waiting in
1220 * get_empty_nodes or its clones
1222 static int reiserfs_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1223 struct inode
*new_dir
, struct dentry
*new_dentry
)
1226 INITIALIZE_PATH(old_entry_path
);
1227 INITIALIZE_PATH(new_entry_path
);
1228 INITIALIZE_PATH(dot_dot_entry_path
);
1229 struct item_head new_entry_ih
, old_entry_ih
, dot_dot_ih
;
1230 struct reiserfs_dir_entry old_de
, new_de
, dot_dot_de
;
1231 struct inode
*old_inode
, *new_dentry_inode
;
1232 struct reiserfs_transaction_handle th
;
1234 umode_t old_inode_mode
;
1235 unsigned long savelink
= 1;
1236 struct timespec ctime
;
1238 /* three balancings: (1) old name removal, (2) new name insertion
1239 and (3) maybe "save" link insertion
1240 stat data updates: (1) old directory,
1241 (2) new directory and (3) maybe old object stat data (when it is
1242 directory) and (4) maybe stat data of object to which new entry
1243 pointed initially and (5) maybe block containing ".." of
1245 quota updates: two parent directories */
1247 JOURNAL_PER_BALANCE_CNT
* 3 + 5 +
1248 4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir
->i_sb
);
1250 old_inode
= old_dentry
->d_inode
;
1251 new_dentry_inode
= new_dentry
->d_inode
;
1253 // make sure, that oldname still exists and points to an object we
1254 // are going to rename
1255 old_de
.de_gen_number_bit_string
= NULL
;
1256 reiserfs_write_lock(old_dir
->i_sb
);
1258 reiserfs_find_entry(old_dir
, old_dentry
->d_name
.name
,
1259 old_dentry
->d_name
.len
, &old_entry_path
,
1261 pathrelse(&old_entry_path
);
1262 if (retval
== IO_ERROR
) {
1263 reiserfs_write_unlock(old_dir
->i_sb
);
1267 if (retval
!= NAME_FOUND
|| old_de
.de_objectid
!= old_inode
->i_ino
) {
1268 reiserfs_write_unlock(old_dir
->i_sb
);
1272 old_inode_mode
= old_inode
->i_mode
;
1273 if (S_ISDIR(old_inode_mode
)) {
1274 // make sure, that directory being renamed has correct ".."
1275 // and that its new parent directory has not too many links
1278 if (new_dentry_inode
) {
1279 if (!reiserfs_empty_dir(new_dentry_inode
)) {
1280 reiserfs_write_unlock(old_dir
->i_sb
);
1285 /* directory is renamed, its parent directory will be changed,
1286 ** so find ".." entry
1288 dot_dot_de
.de_gen_number_bit_string
= NULL
;
1290 reiserfs_find_entry(old_inode
, "..", 2, &dot_dot_entry_path
,
1292 pathrelse(&dot_dot_entry_path
);
1293 if (retval
!= NAME_FOUND
) {
1294 reiserfs_write_unlock(old_dir
->i_sb
);
1298 /* inode number of .. must equal old_dir->i_ino */
1299 if (dot_dot_de
.de_objectid
!= old_dir
->i_ino
) {
1300 reiserfs_write_unlock(old_dir
->i_sb
);
1305 retval
= journal_begin(&th
, old_dir
->i_sb
, jbegin_count
);
1307 reiserfs_write_unlock(old_dir
->i_sb
);
1311 /* add new entry (or find the existing one) */
1313 reiserfs_add_entry(&th
, new_dir
, new_dentry
->d_name
.name
,
1314 new_dentry
->d_name
.len
, old_inode
, 0);
1315 if (retval
== -EEXIST
) {
1316 if (!new_dentry_inode
) {
1317 reiserfs_panic(old_dir
->i_sb
, "vs-7050",
1318 "new entry is found, new inode == 0");
1320 } else if (retval
) {
1321 int err
= journal_end(&th
, old_dir
->i_sb
, jbegin_count
);
1322 reiserfs_write_unlock(old_dir
->i_sb
);
1323 return err
? err
: retval
;
1326 reiserfs_update_inode_transaction(old_dir
);
1327 reiserfs_update_inode_transaction(new_dir
);
1329 /* this makes it so an fsync on an open fd for the old name will
1330 ** commit the rename operation
1332 reiserfs_update_inode_transaction(old_inode
);
1334 if (new_dentry_inode
)
1335 reiserfs_update_inode_transaction(new_dentry_inode
);
1338 // look for old name using corresponding entry key (found by reiserfs_find_entry)
1340 search_by_entry_key(new_dir
->i_sb
, &old_de
.de_entry_key
,
1342 &old_de
)) != NAME_FOUND
) {
1343 pathrelse(&old_entry_path
);
1344 journal_end(&th
, old_dir
->i_sb
, jbegin_count
);
1345 reiserfs_write_unlock(old_dir
->i_sb
);
1349 copy_item_head(&old_entry_ih
, get_ih(&old_entry_path
));
1351 reiserfs_prepare_for_journal(old_inode
->i_sb
, old_de
.de_bh
, 1);
1353 // look for new name by reiserfs_find_entry
1354 new_de
.de_gen_number_bit_string
= NULL
;
1356 reiserfs_find_entry(new_dir
, new_dentry
->d_name
.name
,
1357 new_dentry
->d_name
.len
, &new_entry_path
,
1359 // reiserfs_add_entry should not return IO_ERROR, because it is called with essentially same parameters from
1360 // reiserfs_add_entry above, and we'll catch any i/o errors before we get here.
1361 if (retval
!= NAME_FOUND_INVISIBLE
&& retval
!= NAME_FOUND
) {
1362 pathrelse(&new_entry_path
);
1363 pathrelse(&old_entry_path
);
1364 journal_end(&th
, old_dir
->i_sb
, jbegin_count
);
1365 reiserfs_write_unlock(old_dir
->i_sb
);
1369 copy_item_head(&new_entry_ih
, get_ih(&new_entry_path
));
1371 reiserfs_prepare_for_journal(old_inode
->i_sb
, new_de
.de_bh
, 1);
1373 if (S_ISDIR(old_inode
->i_mode
)) {
1375 search_by_entry_key(new_dir
->i_sb
,
1376 &dot_dot_de
.de_entry_key
,
1377 &dot_dot_entry_path
,
1378 &dot_dot_de
)) != NAME_FOUND
) {
1379 pathrelse(&dot_dot_entry_path
);
1380 pathrelse(&new_entry_path
);
1381 pathrelse(&old_entry_path
);
1382 journal_end(&th
, old_dir
->i_sb
, jbegin_count
);
1383 reiserfs_write_unlock(old_dir
->i_sb
);
1386 copy_item_head(&dot_dot_ih
,
1387 get_ih(&dot_dot_entry_path
));
1388 // node containing ".." gets into transaction
1389 reiserfs_prepare_for_journal(old_inode
->i_sb
,
1390 dot_dot_de
.de_bh
, 1);
1392 /* we should check seals here, not do
1393 this stuff, yes? Then, having
1394 gathered everything into RAM we
1395 should lock the buffers, yes? -Hans */
1396 /* probably. our rename needs to hold more
1397 ** than one path at once. The seals would
1398 ** have to be written to deal with multi-path
1401 /* sanity checking before doing the rename - avoid races many
1402 ** of the above checks could have scheduled. We have to be
1403 ** sure our items haven't been shifted by another process.
1405 if (item_moved(&new_entry_ih
, &new_entry_path
) ||
1406 !entry_points_to_object(new_dentry
->d_name
.name
,
1407 new_dentry
->d_name
.len
,
1408 &new_de
, new_dentry_inode
) ||
1409 item_moved(&old_entry_ih
, &old_entry_path
) ||
1410 !entry_points_to_object(old_dentry
->d_name
.name
,
1411 old_dentry
->d_name
.len
,
1412 &old_de
, old_inode
)) {
1413 reiserfs_restore_prepared_buffer(old_inode
->i_sb
,
1415 reiserfs_restore_prepared_buffer(old_inode
->i_sb
,
1417 if (S_ISDIR(old_inode_mode
))
1418 reiserfs_restore_prepared_buffer(old_inode
->
1424 if (S_ISDIR(old_inode_mode
)) {
1425 if (item_moved(&dot_dot_ih
, &dot_dot_entry_path
) ||
1426 !entry_points_to_object("..", 2, &dot_dot_de
,
1428 reiserfs_restore_prepared_buffer(old_inode
->
1431 reiserfs_restore_prepared_buffer(old_inode
->
1434 reiserfs_restore_prepared_buffer(old_inode
->
1442 RFALSE(S_ISDIR(old_inode_mode
) &&
1443 !buffer_journal_prepared(dot_dot_de
.de_bh
), "");
1448 /* ok, all the changes can be done in one fell swoop when we
1449 have claimed all the buffers needed. */
1451 mark_de_visible(new_de
.de_deh
+ new_de
.de_entry_num
);
1452 set_ino_in_dir_entry(&new_de
, INODE_PKEY(old_inode
));
1453 journal_mark_dirty(&th
, old_dir
->i_sb
, new_de
.de_bh
);
1455 mark_de_hidden(old_de
.de_deh
+ old_de
.de_entry_num
);
1456 journal_mark_dirty(&th
, old_dir
->i_sb
, old_de
.de_bh
);
1457 ctime
= CURRENT_TIME_SEC
;
1458 old_dir
->i_ctime
= old_dir
->i_mtime
= ctime
;
1459 new_dir
->i_ctime
= new_dir
->i_mtime
= ctime
;
1460 /* thanks to Alex Adriaanse <alex_a@caltech.edu> for patch which adds ctime update of
1462 old_inode
->i_ctime
= ctime
;
1464 if (new_dentry_inode
) {
1465 // adjust link number of the victim
1466 if (S_ISDIR(new_dentry_inode
->i_mode
)) {
1467 clear_nlink(new_dentry_inode
);
1469 drop_nlink(new_dentry_inode
);
1471 new_dentry_inode
->i_ctime
= ctime
;
1472 savelink
= new_dentry_inode
->i_nlink
;
1475 if (S_ISDIR(old_inode_mode
)) {
1476 // adjust ".." of renamed directory
1477 set_ino_in_dir_entry(&dot_dot_de
, INODE_PKEY(new_dir
));
1478 journal_mark_dirty(&th
, new_dir
->i_sb
, dot_dot_de
.de_bh
);
1480 if (!new_dentry_inode
)
1481 /* there (in new_dir) was no directory, so it got new link
1482 (".." of renamed directory) */
1483 INC_DIR_INODE_NLINK(new_dir
);
1485 /* old directory lost one link - ".. " of renamed directory */
1486 DEC_DIR_INODE_NLINK(old_dir
);
1488 // looks like in 2.3.99pre3 brelse is atomic. so we can use pathrelse
1489 pathrelse(&new_entry_path
);
1490 pathrelse(&dot_dot_entry_path
);
1492 // FIXME: this reiserfs_cut_from_item's return value may screw up
1493 // anybody, but it will panic if will not be able to find the
1494 // entry. This needs one more clean up
1495 if (reiserfs_cut_from_item
1496 (&th
, &old_entry_path
, &(old_de
.de_entry_key
), old_dir
, NULL
,
1498 reiserfs_error(old_dir
->i_sb
, "vs-7060",
1499 "couldn't not cut old name. Fsck later?");
1501 old_dir
->i_size
-= DEH_SIZE
+ old_de
.de_entrylen
;
1503 reiserfs_update_sd(&th
, old_dir
);
1504 reiserfs_update_sd(&th
, new_dir
);
1505 reiserfs_update_sd(&th
, old_inode
);
1507 if (new_dentry_inode
) {
1509 add_save_link(&th
, new_dentry_inode
,
1510 0 /* not truncate */ );
1511 reiserfs_update_sd(&th
, new_dentry_inode
);
1514 retval
= journal_end(&th
, old_dir
->i_sb
, jbegin_count
);
1515 reiserfs_write_unlock(old_dir
->i_sb
);
1520 * directories can handle most operations...
1522 const struct inode_operations reiserfs_dir_inode_operations
= {
1523 //&reiserfs_dir_operations, /* default_file_ops */
1524 .create
= reiserfs_create
,
1525 .lookup
= reiserfs_lookup
,
1526 .link
= reiserfs_link
,
1527 .unlink
= reiserfs_unlink
,
1528 .symlink
= reiserfs_symlink
,
1529 .mkdir
= reiserfs_mkdir
,
1530 .rmdir
= reiserfs_rmdir
,
1531 .mknod
= reiserfs_mknod
,
1532 .rename
= reiserfs_rename
,
1533 .setattr
= reiserfs_setattr
,
1534 .setxattr
= reiserfs_setxattr
,
1535 .getxattr
= reiserfs_getxattr
,
1536 .listxattr
= reiserfs_listxattr
,
1537 .removexattr
= reiserfs_removexattr
,
1538 .permission
= reiserfs_permission
,
1542 * symlink operations.. same as page_symlink_inode_operations, with xattr
1545 const struct inode_operations reiserfs_symlink_inode_operations
= {
1546 .readlink
= generic_readlink
,
1547 .follow_link
= page_follow_link_light
,
1548 .put_link
= page_put_link
,
1549 .setattr
= reiserfs_setattr
,
1550 .setxattr
= reiserfs_setxattr
,
1551 .getxattr
= reiserfs_getxattr
,
1552 .listxattr
= reiserfs_listxattr
,
1553 .removexattr
= reiserfs_removexattr
,
1554 .permission
= reiserfs_permission
,
1559 * special file operations.. just xattr/acl stuff
1561 const struct inode_operations reiserfs_special_inode_operations
= {
1562 .setattr
= reiserfs_setattr
,
1563 .setxattr
= reiserfs_setxattr
,
1564 .getxattr
= reiserfs_getxattr
,
1565 .listxattr
= reiserfs_listxattr
,
1566 .removexattr
= reiserfs_removexattr
,
1567 .permission
= reiserfs_permission
,