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/config.h>
15 #include <linux/time.h>
16 #include <linux/bitops.h>
17 #include <linux/reiserfs_fs.h>
18 #include <linux/reiserfs_acl.h>
19 #include <linux/reiserfs_xattr.h>
20 #include <linux/smp_lock.h>
21 #include <linux/quotaops.h>
22 #include <linux/vserver/xid.h>
24 #define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { i->i_nlink++; if (i->i_nlink >= REISERFS_LINK_MAX) i->i_nlink=1; }
25 #define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) i->i_nlink--;
27 // directory item contains array of entry headers. This performs
28 // 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 = I_ENTRY_COUNT (ih) - 1;
38 for (j = (rbound + lbound) / 2; lbound <= rbound; j = (rbound + lbound) / 2) {
39 if (off < deh_offset (deh + j)) {
43 if (off > deh_offset (deh + j)) {
47 // this is not name found, but matched third key component
52 de->de_entry_num = lbound;
53 return NAME_NOT_FOUND;
57 // comment? maybe something like set de to point to what the path points to?
58 static inline void set_de_item_location (struct reiserfs_dir_entry * de, struct path * path)
60 de->de_bh = get_last_bh (path);
61 de->de_ih = get_ih (path);
62 de->de_deh = B_I_DEH (de->de_bh, de->de_ih);
63 de->de_item_num = PATH_LAST_POSITION (path);
67 // de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
68 inline void set_de_name_and_namelen (struct reiserfs_dir_entry * de)
70 struct reiserfs_de_head * deh = de->de_deh + de->de_entry_num;
72 if (de->de_entry_num >= ih_entry_count (de->de_ih))
75 de->de_entrylen = entry_length (de->de_bh, de->de_ih, de->de_entry_num);
76 de->de_namelen = de->de_entrylen - (de_with_sd (deh) ? SD_SIZE : 0);
77 de->de_name = B_I_PITEM (de->de_bh, de->de_ih) + deh_location(deh);
78 if (de->de_name[de->de_namelen - 1] == 0)
79 de->de_namelen = strlen (de->de_name);
83 // what entry points to
84 static inline void set_de_object_key (struct reiserfs_dir_entry * de)
86 if (de->de_entry_num >= ih_entry_count (de->de_ih))
88 de->de_dir_id = deh_dir_id( &(de->de_deh[de->de_entry_num]));
89 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 if (de->de_entry_num >= ih_entry_count (de->de_ih))
100 /* store key of the found entry */
101 de->de_entry_key.version = KEY_FORMAT_3_5;
102 de->de_entry_key.on_disk_key.k_dir_id = le32_to_cpu (de->de_ih->ih_key.k_dir_id);
103 de->de_entry_key.on_disk_key.k_objectid = le32_to_cpu (de->de_ih->ih_key.k_objectid);
104 set_cpu_key_k_offset (&(de->de_entry_key), deh_offset (deh));
105 set_cpu_key_k_type (&(de->de_entry_key), TYPE_DIRENTRY);
109 /* We assign a key to each directory item, and place multiple entries
110 in a single directory item. A directory item has a key equal to the
111 key of the first directory entry in it.
113 This function first calls search_by_key, then, if item whose first
114 entry matches is not found it looks for the entry inside directory
115 item found by search_by_key. Fills the path to the entry, and to the
116 entry position in the item
120 /* The function is NOT SCHEDULE-SAFE! */
121 int search_by_entry_key (struct super_block * sb, const struct cpu_key * key,
122 struct path * path, struct reiserfs_dir_entry * de)
126 retval = search_item (sb, key, path);
129 if (!PATH_LAST_POSITION (path)) {
130 reiserfs_warning (sb, "vs-7000: search_by_entry_key: search_by_key returned item position == 0");
134 PATH_LAST_POSITION (path) --;
144 reiserfs_warning (sb, "vs-7002: search_by_entry_key: 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: search_by_entry_key: found item %h is not directory item or "
155 "does not belong to the same directory as key %K", de->de_ih, key);
157 #endif /* CONFIG_REISERFS_CHECK */
159 /* binary search in directory item by third componen t of the
160 key. sets de->de_entry_num of de */
161 retval = bin_search_in_dir_item (de, cpu_key_k_offset (key));
162 path->pos_in_item = de->de_entry_num;
163 if (retval != NAME_NOT_FOUND) {
164 // ugly, but rename needs de_bh, de_deh, de_name, de_namelen, de_objectid set
165 set_de_name_and_namelen (de);
166 set_de_object_key (de);
173 /* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
175 /* The third component is hashed, and you can choose from more than
176 one hash function. Per directory hashes are not yet implemented
177 but are thought about. This function should be moved to hashes.c
178 Jedi, please do so. -Hans */
180 static __u32 get_third_component (struct super_block * s,
181 const char * name, int len)
185 if (!len || (len == 1 && name[0] == '.'))
187 if (len == 2 && name[0] == '.' && name[1] == '.')
188 return DOT_DOT_OFFSET;
190 res = REISERFS_SB(s)->s_hash_function (name, len);
192 // take bits from 7-th to 30-th including both bounds
193 res = GET_HASH_VALUE(res);
195 // needed to have no names before "." and ".." those have hash
196 // value == 0 and generation conters 1 and 2 accordingly
198 return res + MAX_GENERATION_NUMBER;
202 static int reiserfs_match (struct reiserfs_dir_entry * de,
203 const char * name, int namelen)
205 int retval = NAME_NOT_FOUND;
207 if ((namelen == de->de_namelen) &&
208 !memcmp(de->de_name, name, de->de_namelen))
209 retval = (de_visible (de->de_deh + de->de_entry_num) ? NAME_FOUND : NAME_FOUND_INVISIBLE);
215 /* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
217 /* used when hash collisions exist */
220 static int linear_search_in_dir_item (struct cpu_key * key, struct reiserfs_dir_entry * de,
221 const char * name, int namelen)
223 struct reiserfs_de_head * deh = de->de_deh;
227 i = de->de_entry_num;
229 if (i == I_ENTRY_COUNT (de->de_ih) ||
230 GET_HASH_VALUE (deh_offset (deh + i)) != GET_HASH_VALUE (cpu_key_k_offset (key))) {
234 RFALSE( de->de_deh != B_I_DEH (de->de_bh, de->de_ih),
235 "vs-7010: array of entry headers not found");
239 for (; i >= 0; i --, deh --) {
240 if (GET_HASH_VALUE (deh_offset (deh)) !=
241 GET_HASH_VALUE (cpu_key_k_offset (key))) {
242 // hash value does not match, no need to check whole name
243 return NAME_NOT_FOUND;
246 /* mark, that this generation number is used */
247 if (de->de_gen_number_bit_string)
248 set_bit (GET_GENERATION_NUMBER (deh_offset (deh)), (unsigned long *)de->de_gen_number_bit_string);
250 // calculate pointer to name and namelen
251 de->de_entry_num = i;
252 set_de_name_and_namelen (de);
254 if ((retval = reiserfs_match (de, name, namelen)) != NAME_NOT_FOUND) {
255 // de's de_name, de_namelen, de_recordlen are set. Fill the rest:
257 // key of pointed object
258 set_de_object_key (de);
260 store_de_entry_key (de);
262 // retval can be NAME_FOUND or NAME_FOUND_INVISIBLE
267 if (GET_GENERATION_NUMBER (le_ih_k_offset (de->de_ih)) == 0)
268 /* we have reached left most entry in the node. In common we
269 have to go to the left neighbor, but if generation counter
270 is 0 already, we know for sure, that there is no name with
271 the same hash value */
272 // FIXME: this work correctly only because hash value can not
273 // be 0. Btw, in case of Yura's hash it is probably possible,
275 return NAME_NOT_FOUND;
277 RFALSE( de->de_item_num,
278 "vs-7015: two diritems of the same directory in one node?");
280 return GOTO_PREVIOUS_ITEM;
284 // may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
285 // FIXME: should add something like IOERROR
286 static int reiserfs_find_entry (struct inode * dir, const char * name, int namelen,
287 struct path * path_to_entry, struct reiserfs_dir_entry * de)
289 struct cpu_key key_to_search;
293 if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize))
294 return NAME_NOT_FOUND;
296 /* we will search for this key in the tree */
297 make_cpu_key (&key_to_search, dir,
298 get_third_component (dir->i_sb, name, namelen), TYPE_DIRENTRY, 3);
301 retval = search_by_entry_key (dir->i_sb, &key_to_search, path_to_entry, de);
302 if (retval == IO_ERROR) {
303 reiserfs_warning (dir->i_sb, "zam-7001: io error in %s",
308 /* compare names for all entries having given hash value */
309 retval = linear_search_in_dir_item (&key_to_search, de, name, namelen);
310 if (retval != GOTO_PREVIOUS_ITEM) {
311 /* there is no need to scan directory anymore. Given entry found or does not exist */
312 path_to_entry->pos_in_item = de->de_entry_num;
316 /* there is left neighboring item of this directory and given entry can be there */
317 set_cpu_key_k_offset (&key_to_search, le_ih_k_offset (de->de_ih) - 1);
318 pathrelse (path_to_entry);
324 static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dentry, 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;
336 retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path_to_entry, &de);
337 pathrelse (&path_to_entry);
338 if (retval == NAME_FOUND) {
339 /* Hide the .reiserfs_priv directory */
340 if (reiserfs_xattrs (dir->i_sb) &&
341 !old_format_only(dir->i_sb) &&
342 REISERFS_SB(dir->i_sb)->priv_root &&
343 REISERFS_SB(dir->i_sb)->priv_root->d_inode &&
344 de.de_objectid == le32_to_cpu (INODE_PKEY(REISERFS_SB(dir->i_sb)->priv_root->d_inode)->k_objectid)) {
345 reiserfs_write_unlock (dir->i_sb);
346 return ERR_PTR (-EACCES);
349 inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
350 if (!inode || IS_ERR(inode)) {
351 reiserfs_write_unlock(dir->i_sb);
352 return ERR_PTR(-EACCES);
354 vx_propagate_xid(nd, inode);
356 /* Propogate the priv_object flag so we know we're in the priv tree */
357 if (is_reiserfs_priv_object (dir))
358 REISERFS_I(inode)->i_flags |= i_priv_object;
360 reiserfs_write_unlock(dir->i_sb);
361 if ( retval == IO_ERROR ) {
362 return ERR_PTR(-EIO);
366 return d_splice_alias(inode, dentry);
368 d_add(dentry, inode);
374 ** looks up the dentry of the parent directory for child.
375 ** taken from ext2_get_parent
377 struct dentry *reiserfs_get_parent(struct dentry *child)
380 struct inode * inode = NULL;
381 struct reiserfs_dir_entry de;
382 INITIALIZE_PATH (path_to_entry);
383 struct dentry *parent;
384 struct inode *dir = child->d_inode ;
387 if (dir->i_nlink == 0) {
388 return ERR_PTR(-ENOENT);
390 de.de_gen_number_bit_string = NULL;
392 reiserfs_write_lock(dir->i_sb);
393 retval = reiserfs_find_entry (dir, "..", 2, &path_to_entry, &de);
394 pathrelse (&path_to_entry);
395 if (retval != NAME_FOUND) {
396 reiserfs_write_unlock(dir->i_sb);
397 return ERR_PTR(-ENOENT);
399 inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
400 reiserfs_write_unlock(dir->i_sb);
402 if (!inode || IS_ERR(inode)) {
403 return ERR_PTR(-EACCES);
405 parent = d_alloc_anon(inode);
408 parent = ERR_PTR(-ENOMEM);
414 /* add entry to the directory (entry can be hidden).
416 insert definition of when hidden directories are used here -Hans
418 Does not mark dir inode dirty, do it after successesfull call to it */
420 static int reiserfs_add_entry (struct reiserfs_transaction_handle *th, struct inode * dir,
421 const char * name, int namelen, struct inode * inode,
424 struct cpu_key entry_key;
425 struct reiserfs_de_head * deh;
426 INITIALIZE_PATH (path);
427 struct reiserfs_dir_entry de;
428 int bit_string [MAX_GENERATION_NUMBER / (sizeof(int) * 8) + 1];
430 char small_buf[32+DEH_SIZE] ; /* 48 bytes now and we avoid kmalloc
431 if we create file with short name */
433 int buflen, paste_size;
436 BUG_ON (!th->t_trans_id);
438 /* cannot allow items to be added into a busy deleted directory */
442 if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize))
443 return -ENAMETOOLONG;
445 /* each entry has unique key. compose it */
446 make_cpu_key (&entry_key, dir,
447 get_third_component (dir->i_sb, name, namelen), TYPE_DIRENTRY, 3);
449 /* get memory for composing the entry */
450 buflen = DEH_SIZE + ROUND_UP (namelen);
451 if (buflen > sizeof (small_buf)) {
452 buffer = reiserfs_kmalloc (buflen, GFP_NOFS, dir->i_sb);
458 paste_size = (get_inode_sd_version (dir) == STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
460 /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */
461 deh = (struct reiserfs_de_head *)buffer;
462 deh->deh_location = 0; /* JDM Endian safe if 0 */
463 put_deh_offset( deh, cpu_key_k_offset( &entry_key ) );
464 deh->deh_state = 0; /* JDM Endian safe if 0 */
465 /* put key (ino analog) to de */
466 deh->deh_dir_id = INODE_PKEY (inode)->k_dir_id; /* safe: k_dir_id is le */
467 deh->deh_objectid = INODE_PKEY (inode)->k_objectid; /* safe: k_objectid is le */
470 memcpy ((char *)(deh + 1), name, namelen);
471 /* padd by 0s to the 4 byte boundary */
472 padd_item ((char *)(deh + 1), ROUND_UP (namelen), namelen);
474 /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */
475 mark_de_without_sd (deh);
476 visible ? mark_de_visible (deh) : mark_de_hidden (deh);
478 /* find the proper place for the new entry */
479 memset (bit_string, 0, sizeof (bit_string));
480 de.de_gen_number_bit_string = (char *)bit_string;
481 retval = reiserfs_find_entry (dir, name, namelen, &path, &de);
482 if( retval != NAME_NOT_FOUND ) {
483 if (buffer != small_buf)
484 reiserfs_kfree (buffer, buflen, dir->i_sb);
487 if ( retval == IO_ERROR ) {
491 if (retval != NAME_FOUND) {
492 reiserfs_warning (dir->i_sb, "zam-7002:%s: \"reiserfs_find_entry\" "
493 "has returned unexpected value (%d)",
494 __FUNCTION__, retval);
500 gen_number = find_first_zero_bit ((unsigned long *)bit_string, MAX_GENERATION_NUMBER + 1);
501 if (gen_number > MAX_GENERATION_NUMBER) {
502 /* there is no free generation number */
503 reiserfs_warning (dir->i_sb, "reiserfs_add_entry: Congratulations! we have got hash function screwed up");
504 if (buffer != small_buf)
505 reiserfs_kfree (buffer, buflen, dir->i_sb);
509 /* adjust offset of directory enrty */
510 put_deh_offset(deh, SET_GENERATION_NUMBER(deh_offset(deh), gen_number));
511 set_cpu_key_k_offset (&entry_key, deh_offset(deh));
513 /* update max-hash-collisions counter in reiserfs_sb_info */
514 PROC_INFO_MAX( th -> t_super, max_hash_collisions, gen_number );
516 if (gen_number != 0) { /* we need to re-search for the insertion point */
517 if (search_by_entry_key (dir->i_sb, &entry_key, &path, &de) != NAME_NOT_FOUND) {
518 reiserfs_warning (dir->i_sb, "vs-7032: reiserfs_add_entry: "
519 "entry with this key (%K) already exists",
522 if (buffer != small_buf)
523 reiserfs_kfree (buffer, buflen, dir->i_sb);
529 /* perform the insertion of the entry that we have prepared */
530 retval = reiserfs_paste_into_item (th, &path, &entry_key, dir, buffer, paste_size);
531 if (buffer != small_buf)
532 reiserfs_kfree (buffer, buflen, dir->i_sb);
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) {
555 make_bad_inode(inode) ;
556 inode->i_flags |= S_NOQUOTA;
561 /* utility function that does setup for reiserfs_new_inode.
562 ** DQUOT_INIT needs lots of credits so it's better to have it
563 ** outside of a transaction, so we had to pull some bits of
564 ** reiserfs_new_inode out into this func.
566 static int new_inode_init(struct inode *inode, struct inode *dir, int mode) {
568 /* the quota init calls have to know who to charge the quota to, so
569 ** we have to set uid and gid here
571 inode->i_uid = current->fsuid;
572 inode->i_mode = mode;
574 if (dir->i_mode & S_ISGID) {
575 inode->i_gid = dir->i_gid;
577 inode->i_mode |= S_ISGID;
579 inode->i_gid = current->fsgid;
585 static int reiserfs_create (struct inode * dir, struct dentry *dentry, int mode,
586 struct nameidata *nd)
589 struct inode * inode;
590 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
591 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
592 struct reiserfs_transaction_handle th ;
595 if (!(inode = new_inode(dir->i_sb))) {
598 new_inode_init(inode, dir, mode);
600 locked = reiserfs_cache_default_acl (dir);
602 reiserfs_write_lock(dir->i_sb);
605 reiserfs_write_lock_xattrs (dir->i_sb);
607 retval = journal_begin(&th, dir->i_sb, jbegin_count);
609 drop_new_inode (inode);
613 retval = reiserfs_new_inode (&th, dir, mode, 0, 0/*i_size*/, dentry, inode);
618 reiserfs_write_unlock_xattrs (dir->i_sb);
622 inode->i_op = &reiserfs_file_inode_operations;
623 inode->i_fop = &reiserfs_file_operations;
624 inode->i_mapping->a_ops = &reiserfs_address_space_operations ;
626 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
627 inode, 1/*visible*/);
631 reiserfs_update_sd (&th, inode);
632 err = journal_end(&th, dir->i_sb, jbegin_count) ;
638 reiserfs_update_inode_transaction(inode) ;
639 reiserfs_update_inode_transaction(dir) ;
641 d_instantiate(dentry, inode);
642 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
646 reiserfs_write_unlock_xattrs (dir->i_sb);
647 reiserfs_write_unlock(dir->i_sb);
652 static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t rdev)
655 struct inode * inode;
656 struct reiserfs_transaction_handle th ;
657 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
658 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
661 if (!new_valid_dev(rdev))
664 if (!(inode = new_inode(dir->i_sb))) {
667 new_inode_init(inode, dir, mode);
669 locked = reiserfs_cache_default_acl (dir);
671 reiserfs_write_lock(dir->i_sb);
674 reiserfs_write_lock_xattrs (dir->i_sb);
676 retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
678 drop_new_inode (inode);
682 retval = reiserfs_new_inode (&th, dir, mode, NULL, 0/*i_size*/, dentry, inode);
688 reiserfs_write_unlock_xattrs (dir->i_sb);
693 inode->i_op = &reiserfs_special_inode_operations;
694 init_special_inode(inode, inode->i_mode, rdev) ;
696 //FIXME: needed for block and char devices only
697 reiserfs_update_sd (&th, inode);
699 reiserfs_update_inode_transaction(inode) ;
700 reiserfs_update_inode_transaction(dir) ;
702 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
703 inode, 1/*visible*/);
707 reiserfs_update_sd (&th, inode);
708 err = journal_end(&th, dir->i_sb, jbegin_count) ;
715 d_instantiate(dentry, inode);
716 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
720 reiserfs_write_unlock_xattrs (dir->i_sb);
721 reiserfs_write_unlock(dir->i_sb);
726 static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int mode)
729 struct inode * inode;
730 struct reiserfs_transaction_handle th ;
731 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
732 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
735 #ifdef DISPLACE_NEW_PACKING_LOCALITIES
736 /* set flag that new packing locality created and new blocks for the content * of that directory are not displaced yet */
737 REISERFS_I(dir)->new_packing_locality = 1;
739 mode = S_IFDIR | mode;
740 if (!(inode = new_inode(dir->i_sb))) {
743 new_inode_init(inode, dir, mode);
745 locked = reiserfs_cache_default_acl (dir);
747 reiserfs_write_lock(dir->i_sb);
749 reiserfs_write_lock_xattrs (dir->i_sb);
751 retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
753 drop_new_inode (inode);
758 /* inc the link count now, so another writer doesn't overflow it while
759 ** we sleep later on.
761 INC_DIR_INODE_NLINK(dir)
763 retval = reiserfs_new_inode (&th, dir, mode, NULL/*symlink*/,
764 old_format_only (dir->i_sb) ?
765 EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
773 reiserfs_write_unlock_xattrs (dir->i_sb);
777 reiserfs_update_inode_transaction(inode) ;
778 reiserfs_update_inode_transaction(dir) ;
780 inode->i_op = &reiserfs_dir_inode_operations;
781 inode->i_fop = &reiserfs_dir_operations;
783 // note, _this_ add_entry will not update dir's stat data
784 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
785 inode, 1/*visible*/);
789 DEC_DIR_INODE_NLINK(dir);
790 reiserfs_update_sd (&th, inode);
791 err = journal_end(&th, dir->i_sb, jbegin_count) ;
798 // the above add_entry did not update dir's stat data
799 reiserfs_update_sd (&th, dir);
801 d_instantiate(dentry, inode);
802 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
805 reiserfs_write_unlock_xattrs (dir->i_sb);
806 reiserfs_write_unlock(dir->i_sb);
810 static inline int reiserfs_empty_dir(struct inode *inode) {
811 /* we can cheat because an old format dir cannot have
812 ** EMPTY_DIR_SIZE, and a new format dir cannot have
813 ** EMPTY_DIR_SIZE_V1. So, if the inode is either size,
814 ** regardless of disk format version, the directory is empty.
816 if (inode->i_size != EMPTY_DIR_SIZE &&
817 inode->i_size != EMPTY_DIR_SIZE_V1) {
823 static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry)
826 struct inode * inode;
827 struct reiserfs_transaction_handle th ;
829 INITIALIZE_PATH (path);
830 struct reiserfs_dir_entry de;
833 /* we will be doing 2 balancings and update 2 stat data, we change quotas
834 * of the owner of the directory and of the owner of the parent directory */
835 jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
837 reiserfs_write_lock(dir->i_sb);
838 retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
842 de.de_gen_number_bit_string = NULL;
843 if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) {
846 } else if ( retval == IO_ERROR) {
851 inode = dentry->d_inode;
853 reiserfs_update_inode_transaction(inode) ;
854 reiserfs_update_inode_transaction(dir) ;
856 if (de.de_objectid != inode->i_ino) {
857 // FIXME: compare key of an object and a key found in the
862 if (!reiserfs_empty_dir(inode)) {
867 /* cut entry from dir directory */
868 retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir,
870 0/*new file size - not used here*/);
874 if ( inode->i_nlink != 2 && inode->i_nlink != 1 )
875 reiserfs_warning (inode->i_sb, "%s: empty directory has nlink "
876 "!= 2 (%d)", __FUNCTION__, inode->i_nlink);
879 inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
880 reiserfs_update_sd (&th, inode);
882 DEC_DIR_INODE_NLINK(dir)
883 dir->i_size -= (DEH_SIZE + de.de_entrylen);
884 reiserfs_update_sd (&th, dir);
886 /* prevent empty directory from getting lost */
887 add_save_link (&th, inode, 0/* not truncate */);
889 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
890 reiserfs_check_path(&path) ;
892 reiserfs_write_unlock(dir->i_sb);
896 /* we must release path, because we did not call
897 reiserfs_cut_from_item, or reiserfs_cut_from_item does not
898 release path if operation was not complete */
900 err = journal_end(&th, dir->i_sb, jbegin_count) ;
901 reiserfs_write_unlock(dir->i_sb);
902 return err ? err : retval;
905 static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
908 struct inode * inode;
909 struct reiserfs_dir_entry de;
910 INITIALIZE_PATH (path);
911 struct reiserfs_transaction_handle th ;
913 unsigned long savelink;
915 inode = dentry->d_inode;
917 /* in this transaction we can be doing at max two balancings and update
918 two stat datas, we change quotas of the owner of the directory and of
919 the owner of the parent directory */
920 jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
922 reiserfs_write_lock(dir->i_sb);
923 retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
927 de.de_gen_number_bit_string = NULL;
928 if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) {
931 } else if (retval == IO_ERROR) {
936 reiserfs_update_inode_transaction(inode) ;
937 reiserfs_update_inode_transaction(dir) ;
939 if (de.de_objectid != inode->i_ino) {
940 // FIXME: compare key of an object and a key found in the
946 if (!inode->i_nlink) {
947 reiserfs_warning (inode->i_sb, "%s: deleting nonexistent file "
948 "(%s:%lu), %d", __FUNCTION__,
949 reiserfs_bdevname (inode->i_sb), inode->i_ino,
957 * we schedule before doing the add_save_link call, save the link
958 * count so we don't race
960 savelink = inode->i_nlink;
963 retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir, NULL, 0);
968 inode->i_ctime = CURRENT_TIME_SEC;
969 reiserfs_update_sd (&th, inode);
971 dir->i_size -= (de.de_entrylen + DEH_SIZE);
972 dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
973 reiserfs_update_sd (&th, dir);
976 /* prevent file from getting lost */
977 add_save_link (&th, inode, 0/* not truncate */);
979 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
980 reiserfs_check_path(&path) ;
981 reiserfs_write_unlock(dir->i_sb);
986 err = journal_end(&th, dir->i_sb, jbegin_count) ;
987 reiserfs_check_path(&path) ;
991 reiserfs_write_unlock(dir->i_sb);
995 static int reiserfs_symlink (struct inode * parent_dir,
996 struct dentry * dentry, const char * symname)
999 struct inode * inode;
1002 struct reiserfs_transaction_handle th ;
1003 int mode = S_IFLNK | S_IRWXUGO;
1004 /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
1005 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
1007 if (!(inode = new_inode(parent_dir->i_sb))) {
1010 new_inode_init(inode, parent_dir, mode);
1012 reiserfs_write_lock(parent_dir->i_sb);
1013 item_len = ROUND_UP (strlen (symname));
1014 if (item_len > MAX_DIRECT_ITEM_LEN (parent_dir->i_sb->s_blocksize)) {
1015 retval = -ENAMETOOLONG;
1016 drop_new_inode(inode);
1020 name = reiserfs_kmalloc (item_len, GFP_NOFS, parent_dir->i_sb);
1022 drop_new_inode(inode);
1026 memcpy (name, symname, strlen (symname));
1027 padd_item (name, item_len, strlen (symname));
1029 /* We would inherit the default ACL here, but symlinks don't get ACLs */
1031 retval = journal_begin(&th, parent_dir->i_sb, jbegin_count) ;
1033 drop_new_inode (inode);
1034 reiserfs_kfree (name, item_len, parent_dir->i_sb);
1038 retval = reiserfs_new_inode (&th, parent_dir, mode, name, strlen (symname),
1040 reiserfs_kfree (name, item_len, parent_dir->i_sb);
1041 if (retval) { /* reiserfs_new_inode iputs for us */
1045 reiserfs_update_inode_transaction(inode) ;
1046 reiserfs_update_inode_transaction(parent_dir) ;
1048 inode->i_op = &reiserfs_symlink_inode_operations;
1049 inode->i_mapping->a_ops = &reiserfs_address_space_operations;
1051 // must be sure this inode is written with this transaction
1053 //reiserfs_update_sd (&th, inode, READ_BLOCKS);
1055 retval = reiserfs_add_entry (&th, parent_dir, dentry->d_name.name,
1056 dentry->d_name.len, inode, 1/*visible*/);
1060 reiserfs_update_sd (&th, inode);
1061 err = journal_end(&th, parent_dir->i_sb, jbegin_count) ;
1068 d_instantiate(dentry, inode);
1069 retval = journal_end(&th, parent_dir->i_sb, jbegin_count) ;
1071 reiserfs_write_unlock(parent_dir->i_sb);
1075 static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct dentry * dentry)
1078 struct inode *inode = old_dentry->d_inode;
1079 struct reiserfs_transaction_handle th ;
1080 /* We need blocks for transaction + update of quotas for the owners of the directory */
1081 int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * REISERFS_QUOTA_TRANS_BLOCKS;
1083 reiserfs_write_lock(dir->i_sb);
1084 if (inode->i_nlink >= REISERFS_LINK_MAX) {
1085 //FIXME: sd_nlink is 32 bit for new files
1086 reiserfs_write_unlock(dir->i_sb);
1089 if (inode->i_nlink == 0) {
1090 reiserfs_write_unlock(dir->i_sb);
1094 /* inc before scheduling so reiserfs_unlink knows we are here */
1097 retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
1100 reiserfs_write_unlock (dir->i_sb);
1104 /* create new entry */
1105 retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
1106 inode, 1/*visible*/);
1108 reiserfs_update_inode_transaction(inode) ;
1109 reiserfs_update_inode_transaction(dir) ;
1114 err = journal_end(&th, dir->i_sb, jbegin_count) ;
1115 reiserfs_write_unlock(dir->i_sb);
1116 return err ? err : retval;
1119 inode->i_ctime = CURRENT_TIME_SEC;
1120 reiserfs_update_sd (&th, inode);
1122 atomic_inc(&inode->i_count) ;
1123 d_instantiate(dentry, inode);
1124 retval = journal_end(&th, dir->i_sb, jbegin_count) ;
1125 reiserfs_write_unlock(dir->i_sb);
1130 // de contains information pointing to an entry which
1131 static int de_still_valid (const char * name, int len, struct reiserfs_dir_entry * de)
1133 struct reiserfs_dir_entry tmp = *de;
1135 // recalculate pointer to name and name length
1136 set_de_name_and_namelen (&tmp);
1137 // FIXME: could check more
1138 if (tmp.de_namelen != len || memcmp (name, de->de_name, len))
1144 static int entry_points_to_object (const char * name, int len, struct reiserfs_dir_entry * de, struct inode * inode)
1146 if (!de_still_valid (name, len, de))
1150 if (!de_visible (de->de_deh + de->de_entry_num))
1151 reiserfs_panic (NULL, "vs-7042: entry_points_to_object: entry must be visible");
1152 return (de->de_objectid == inode->i_ino) ? 1 : 0;
1155 /* this must be added hidden entry */
1156 if (de_visible (de->de_deh + de->de_entry_num))
1157 reiserfs_panic (NULL, "vs-7043: entry_points_to_object: entry must be visible");
1163 /* sets key of objectid the entry has to point to */
1164 static void set_ino_in_dir_entry (struct reiserfs_dir_entry * de, struct reiserfs_key * key)
1166 /* JDM These operations are endian safe - both are le */
1167 de->de_deh[de->de_entry_num].deh_dir_id = key->k_dir_id;
1168 de->de_deh[de->de_entry_num].deh_objectid = key->k_objectid;
1173 * process, that is going to call fix_nodes/do_balance must hold only
1174 * one path. If it holds 2 or more, it can get into endless waiting in
1175 * get_empty_nodes or its clones
1177 static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
1178 struct inode * new_dir, struct dentry *new_dentry)
1181 INITIALIZE_PATH (old_entry_path);
1182 INITIALIZE_PATH (new_entry_path);
1183 INITIALIZE_PATH (dot_dot_entry_path);
1184 struct item_head new_entry_ih, old_entry_ih, dot_dot_ih ;
1185 struct reiserfs_dir_entry old_de, new_de, dot_dot_de;
1186 struct inode * old_inode, * new_dentry_inode;
1187 struct reiserfs_transaction_handle th ;
1189 umode_t old_inode_mode;
1190 unsigned long savelink = 1;
1191 struct timespec ctime;
1193 /* three balancings: (1) old name removal, (2) new name insertion
1194 and (3) maybe "save" link insertion
1195 stat data updates: (1) old directory,
1196 (2) new directory and (3) maybe old object stat data (when it is
1197 directory) and (4) maybe stat data of object to which new entry
1198 pointed initially and (5) maybe block containing ".." of
1200 quota updates: two parent directories */
1201 jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 5 + 4 * REISERFS_QUOTA_TRANS_BLOCKS;
1203 old_inode = old_dentry->d_inode;
1204 new_dentry_inode = new_dentry->d_inode;
1206 // make sure, that oldname still exists and points to an object we
1207 // are going to rename
1208 old_de.de_gen_number_bit_string = NULL;
1209 reiserfs_write_lock(old_dir->i_sb);
1210 retval = reiserfs_find_entry (old_dir, old_dentry->d_name.name, old_dentry->d_name.len,
1211 &old_entry_path, &old_de);
1212 pathrelse (&old_entry_path);
1213 if (retval == IO_ERROR) {
1214 reiserfs_write_unlock(old_dir->i_sb);
1218 if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
1219 reiserfs_write_unlock(old_dir->i_sb);
1223 old_inode_mode = old_inode->i_mode;
1224 if (S_ISDIR(old_inode_mode)) {
1225 // make sure, that directory being renamed has correct ".."
1226 // and that its new parent directory has not too many links
1229 if (new_dentry_inode) {
1230 if (!reiserfs_empty_dir(new_dentry_inode)) {
1231 reiserfs_write_unlock(old_dir->i_sb);
1236 /* directory is renamed, its parent directory will be changed,
1237 ** so find ".." entry
1239 dot_dot_de.de_gen_number_bit_string = NULL;
1240 retval = reiserfs_find_entry (old_inode, "..", 2, &dot_dot_entry_path, &dot_dot_de);
1241 pathrelse (&dot_dot_entry_path);
1242 if (retval != NAME_FOUND) {
1243 reiserfs_write_unlock(old_dir->i_sb);
1247 /* inode number of .. must equal old_dir->i_ino */
1248 if (dot_dot_de.de_objectid != old_dir->i_ino) {
1249 reiserfs_write_unlock(old_dir->i_sb);
1254 retval = journal_begin(&th, old_dir->i_sb, jbegin_count) ;
1256 reiserfs_write_unlock (old_dir->i_sb);
1261 /* add new entry (or find the existing one) */
1262 retval = reiserfs_add_entry (&th, new_dir, new_dentry->d_name.name, new_dentry->d_name.len,
1264 if (retval == -EEXIST) {
1265 if (!new_dentry_inode) {
1266 reiserfs_panic (old_dir->i_sb,
1267 "vs-7050: new entry is found, new inode == 0\n");
1269 } else if (retval) {
1270 int err = journal_end(&th, old_dir->i_sb, jbegin_count) ;
1271 reiserfs_write_unlock(old_dir->i_sb);
1272 return err ? err : retval;
1275 reiserfs_update_inode_transaction(old_dir) ;
1276 reiserfs_update_inode_transaction(new_dir) ;
1278 /* this makes it so an fsync on an open fd for the old name will
1279 ** commit the rename operation
1281 reiserfs_update_inode_transaction(old_inode) ;
1283 if (new_dentry_inode)
1284 reiserfs_update_inode_transaction(new_dentry_inode) ;
1287 // look for old name using corresponding entry key (found by reiserfs_find_entry)
1288 if (search_by_entry_key (new_dir->i_sb, &old_de.de_entry_key, &old_entry_path, &old_de) != NAME_FOUND)
1291 copy_item_head(&old_entry_ih, get_ih(&old_entry_path)) ;
1293 reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1) ;
1295 // look for new name by reiserfs_find_entry
1296 new_de.de_gen_number_bit_string = NULL;
1297 retval = reiserfs_find_entry (new_dir, new_dentry->d_name.name, new_dentry->d_name.len,
1298 &new_entry_path, &new_de);
1299 // reiserfs_add_entry should not return IO_ERROR, because it is called with essentially same parameters from
1300 // reiserfs_add_entry above, and we'll catch any i/o errors before we get here.
1301 if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND)
1304 copy_item_head(&new_entry_ih, get_ih(&new_entry_path)) ;
1306 reiserfs_prepare_for_journal(old_inode->i_sb, new_de.de_bh, 1) ;
1308 if (S_ISDIR(old_inode->i_mode)) {
1309 if (search_by_entry_key (new_dir->i_sb, &dot_dot_de.de_entry_key, &dot_dot_entry_path, &dot_dot_de) != NAME_FOUND)
1311 copy_item_head(&dot_dot_ih, get_ih(&dot_dot_entry_path)) ;
1312 // node containing ".." gets into transaction
1313 reiserfs_prepare_for_journal(old_inode->i_sb, dot_dot_de.de_bh, 1) ;
1315 /* we should check seals here, not do
1316 this stuff, yes? Then, having
1317 gathered everything into RAM we
1318 should lock the buffers, yes? -Hans */
1319 /* probably. our rename needs to hold more
1320 ** than one path at once. The seals would
1321 ** have to be written to deal with multi-path
1324 /* sanity checking before doing the rename - avoid races many
1325 ** of the above checks could have scheduled. We have to be
1326 ** sure our items haven't been shifted by another process.
1328 if (item_moved(&new_entry_ih, &new_entry_path) ||
1329 !entry_points_to_object(new_dentry->d_name.name,
1330 new_dentry->d_name.len,
1331 &new_de, new_dentry_inode) ||
1332 item_moved(&old_entry_ih, &old_entry_path) ||
1333 !entry_points_to_object (old_dentry->d_name.name,
1334 old_dentry->d_name.len,
1335 &old_de, old_inode)) {
1336 reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh);
1337 reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
1338 if (S_ISDIR(old_inode_mode))
1339 reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh);
1342 if (S_ISDIR(old_inode_mode)) {
1343 if ( item_moved(&dot_dot_ih, &dot_dot_entry_path) ||
1344 !entry_points_to_object ( "..", 2, &dot_dot_de, old_dir) ) {
1345 reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
1346 reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh);
1347 reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh);
1352 RFALSE( S_ISDIR(old_inode_mode) &&
1353 !buffer_journal_prepared(dot_dot_de.de_bh), "" );
1358 /* ok, all the changes can be done in one fell swoop when we
1359 have claimed all the buffers needed.*/
1361 mark_de_visible (new_de.de_deh + new_de.de_entry_num);
1362 set_ino_in_dir_entry (&new_de, INODE_PKEY (old_inode));
1363 journal_mark_dirty (&th, old_dir->i_sb, new_de.de_bh);
1365 mark_de_hidden (old_de.de_deh + old_de.de_entry_num);
1366 journal_mark_dirty (&th, old_dir->i_sb, old_de.de_bh);
1367 ctime = CURRENT_TIME_SEC;
1368 old_dir->i_ctime = old_dir->i_mtime = ctime;
1369 new_dir->i_ctime = new_dir->i_mtime = ctime;
1370 /* thanks to Alex Adriaanse <alex_a@caltech.edu> for patch which adds ctime update of
1372 old_inode->i_ctime = ctime;
1374 if (new_dentry_inode) {
1375 // adjust link number of the victim
1376 if (S_ISDIR(new_dentry_inode->i_mode)) {
1377 new_dentry_inode->i_nlink = 0;
1379 new_dentry_inode->i_nlink--;
1381 new_dentry_inode->i_ctime = ctime;
1382 savelink = new_dentry_inode->i_nlink;
1385 if (S_ISDIR(old_inode_mode)) {
1386 // adjust ".." of renamed directory
1387 set_ino_in_dir_entry (&dot_dot_de, INODE_PKEY (new_dir));
1388 journal_mark_dirty (&th, new_dir->i_sb, dot_dot_de.de_bh);
1390 if (!new_dentry_inode)
1391 /* there (in new_dir) was no directory, so it got new link
1392 (".." of renamed directory) */
1393 INC_DIR_INODE_NLINK(new_dir);
1395 /* old directory lost one link - ".. " of renamed directory */
1396 DEC_DIR_INODE_NLINK(old_dir);
1399 // looks like in 2.3.99pre3 brelse is atomic. so we can use pathrelse
1400 pathrelse (&new_entry_path);
1401 pathrelse (&dot_dot_entry_path);
1403 // FIXME: this reiserfs_cut_from_item's return value may screw up
1404 // anybody, but it will panic if will not be able to find the
1405 // entry. This needs one more clean up
1406 if (reiserfs_cut_from_item (&th, &old_entry_path, &(old_de.de_entry_key), old_dir, NULL, 0) < 0)
1407 reiserfs_warning (old_dir->i_sb, "vs-7060: reiserfs_rename: couldn't not cut old name. Fsck later?");
1409 old_dir->i_size -= DEH_SIZE + old_de.de_entrylen;
1411 reiserfs_update_sd (&th, old_dir);
1412 reiserfs_update_sd (&th, new_dir);
1413 reiserfs_update_sd (&th, old_inode);
1415 if (new_dentry_inode) {
1417 add_save_link (&th, new_dentry_inode, 0/* not truncate */);
1418 reiserfs_update_sd (&th, new_dentry_inode);
1421 retval = journal_end(&th, old_dir->i_sb, jbegin_count) ;
1422 reiserfs_write_unlock(old_dir->i_sb);
1427 * directories can handle most operations...
1429 struct inode_operations reiserfs_dir_inode_operations = {
1430 //&reiserfs_dir_operations, /* default_file_ops */
1431 .create = reiserfs_create,
1432 .lookup = reiserfs_lookup,
1433 .link = reiserfs_link,
1434 .unlink = reiserfs_unlink,
1435 .symlink = reiserfs_symlink,
1436 .mkdir = reiserfs_mkdir,
1437 .rmdir = reiserfs_rmdir,
1438 .mknod = reiserfs_mknod,
1439 .rename = reiserfs_rename,
1440 .setattr = reiserfs_setattr,
1441 .setxattr = reiserfs_setxattr,
1442 .getxattr = reiserfs_getxattr,
1443 .listxattr = reiserfs_listxattr,
1444 .removexattr = reiserfs_removexattr,
1445 .permission = reiserfs_permission,
1449 * symlink operations.. same as page_symlink_inode_operations, with xattr
1452 struct inode_operations reiserfs_symlink_inode_operations = {
1453 .readlink = generic_readlink,
1454 .follow_link = page_follow_link_light,
1455 .put_link = page_put_link,
1456 .setattr = reiserfs_setattr,
1457 .setxattr = reiserfs_setxattr,
1458 .getxattr = reiserfs_getxattr,
1459 .listxattr = reiserfs_listxattr,
1460 .removexattr = reiserfs_removexattr,
1461 .permission = reiserfs_permission,
1467 * special file operations.. just xattr/acl stuff
1469 struct inode_operations reiserfs_special_inode_operations = {
1470 .setattr = reiserfs_setattr,
1471 .setxattr = reiserfs_setxattr,
1472 .getxattr = reiserfs_getxattr,
1473 .listxattr = reiserfs_listxattr,
1474 .removexattr = reiserfs_removexattr,
1475 .permission = reiserfs_permission,