Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
new file mode 100644
index 0000000..80e92d9
--- /dev/null
+++ b/fs/reiserfs/namei.c
@@ -0,0 +1,1491 @@
+/*
+ * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
+ *
+ * Trivial changes by Alan Cox to remove EHASHCOLLISION for compatibility
+ *
+ * Trivial Changes:
+ * Rights granted to Hans Reiser to redistribute under other terms providing
+ * he accepts all liability including but not limited to patent, fitness
+ * for purpose, and direct or indirect claims arising from failure to perform.
+ *
+ * NO WARRANTY
+ */
+
+#include <linux/config.h>
+#include <linux/time.h>
+#include <linux/bitops.h>
+#include <linux/reiserfs_fs.h>
+#include <linux/reiserfs_acl.h>
+#include <linux/reiserfs_xattr.h>
+#include <linux/smp_lock.h>
+#include <linux/quotaops.h>
+
+#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; }
+#define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) i->i_nlink--;
+
+// directory item contains array of entry headers. This performs
+// binary search through that array
+static int bin_search_in_dir_item (struct reiserfs_dir_entry * de, loff_t off)
+{
+ struct item_head * ih = de->de_ih;
+ struct reiserfs_de_head * deh = de->de_deh;
+ int rbound, lbound, j;
+
+ lbound = 0;
+ rbound = I_ENTRY_COUNT (ih) - 1;
+
+ for (j = (rbound + lbound) / 2; lbound <= rbound; j = (rbound + lbound) / 2) {
+ if (off < deh_offset (deh + j)) {
+ rbound = j - 1;
+ continue;
+ }
+ if (off > deh_offset (deh + j)) {
+ lbound = j + 1;
+ continue;
+ }
+ // this is not name found, but matched third key component
+ de->de_entry_num = j;
+ return NAME_FOUND;
+ }
+
+ de->de_entry_num = lbound;
+ return NAME_NOT_FOUND;
+}
+
+
+// comment? maybe something like set de to point to what the path points to?
+static inline void set_de_item_location (struct reiserfs_dir_entry * de, struct path * path)
+{
+ de->de_bh = get_last_bh (path);
+ de->de_ih = get_ih (path);
+ de->de_deh = B_I_DEH (de->de_bh, de->de_ih);
+ de->de_item_num = PATH_LAST_POSITION (path);
+}
+
+
+// de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
+inline void set_de_name_and_namelen (struct reiserfs_dir_entry * de)
+{
+ struct reiserfs_de_head * deh = de->de_deh + de->de_entry_num;
+
+ if (de->de_entry_num >= ih_entry_count (de->de_ih))
+ BUG ();
+
+ de->de_entrylen = entry_length (de->de_bh, de->de_ih, de->de_entry_num);
+ de->de_namelen = de->de_entrylen - (de_with_sd (deh) ? SD_SIZE : 0);
+ de->de_name = B_I_PITEM (de->de_bh, de->de_ih) + deh_location(deh);
+ if (de->de_name[de->de_namelen - 1] == 0)
+ de->de_namelen = strlen (de->de_name);
+}
+
+
+// what entry points to
+static inline void set_de_object_key (struct reiserfs_dir_entry * de)
+{
+ if (de->de_entry_num >= ih_entry_count (de->de_ih))
+ BUG ();
+ de->de_dir_id = deh_dir_id( &(de->de_deh[de->de_entry_num]));
+ de->de_objectid = deh_objectid( &(de->de_deh[de->de_entry_num]));
+}
+
+
+static inline void store_de_entry_key (struct reiserfs_dir_entry * de)
+{
+ struct reiserfs_de_head * deh = de->de_deh + de->de_entry_num;
+
+ if (de->de_entry_num >= ih_entry_count (de->de_ih))
+ BUG ();
+
+ /* store key of the found entry */
+ de->de_entry_key.version = KEY_FORMAT_3_5;
+ de->de_entry_key.on_disk_key.k_dir_id = le32_to_cpu (de->de_ih->ih_key.k_dir_id);
+ de->de_entry_key.on_disk_key.k_objectid = le32_to_cpu (de->de_ih->ih_key.k_objectid);
+ set_cpu_key_k_offset (&(de->de_entry_key), deh_offset (deh));
+ set_cpu_key_k_type (&(de->de_entry_key), TYPE_DIRENTRY);
+}
+
+
+/* We assign a key to each directory item, and place multiple entries
+in a single directory item. A directory item has a key equal to the
+key of the first directory entry in it.
+
+This function first calls search_by_key, then, if item whose first
+entry matches is not found it looks for the entry inside directory
+item found by search_by_key. Fills the path to the entry, and to the
+entry position in the item
+
+*/
+
+/* The function is NOT SCHEDULE-SAFE! */
+int search_by_entry_key (struct super_block * sb, const struct cpu_key * key,
+ struct path * path, struct reiserfs_dir_entry * de)
+{
+ int retval;
+
+ retval = search_item (sb, key, path);
+ switch (retval) {
+ case ITEM_NOT_FOUND:
+ if (!PATH_LAST_POSITION (path)) {
+ reiserfs_warning (sb, "vs-7000: search_by_entry_key: search_by_key returned item position == 0");
+ pathrelse(path) ;
+ return IO_ERROR ;
+ }
+ PATH_LAST_POSITION (path) --;
+
+ case ITEM_FOUND:
+ break;
+
+ case IO_ERROR:
+ return retval;
+
+ default:
+ pathrelse (path);
+ reiserfs_warning (sb, "vs-7002: search_by_entry_key: no path to here");
+ return IO_ERROR;
+ }
+
+ set_de_item_location (de, path);
+
+#ifdef CONFIG_REISERFS_CHECK
+ if (!is_direntry_le_ih (de->de_ih) ||
+ COMP_SHORT_KEYS (&(de->de_ih->ih_key), key)) {
+ print_block (de->de_bh, 0, -1, -1);
+ reiserfs_panic (sb, "vs-7005: search_by_entry_key: found item %h is not directory item or "
+ "does not belong to the same directory as key %K", de->de_ih, key);
+ }
+#endif /* CONFIG_REISERFS_CHECK */
+
+ /* binary search in directory item by third componen t of the
+ key. sets de->de_entry_num of de */
+ retval = bin_search_in_dir_item (de, cpu_key_k_offset (key));
+ path->pos_in_item = de->de_entry_num;
+ if (retval != NAME_NOT_FOUND) {
+ // ugly, but rename needs de_bh, de_deh, de_name, de_namelen, de_objectid set
+ set_de_name_and_namelen (de);
+ set_de_object_key (de);
+ }
+ return retval;
+}
+
+
+
+/* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
+
+/* The third component is hashed, and you can choose from more than
+ one hash function. Per directory hashes are not yet implemented
+ but are thought about. This function should be moved to hashes.c
+ Jedi, please do so. -Hans */
+
+static __u32 get_third_component (struct super_block * s,
+ const char * name, int len)
+{
+ __u32 res;
+
+ if (!len || (len == 1 && name[0] == '.'))
+ return DOT_OFFSET;
+ if (len == 2 && name[0] == '.' && name[1] == '.')
+ return DOT_DOT_OFFSET;
+
+ res = REISERFS_SB(s)->s_hash_function (name, len);
+
+ // take bits from 7-th to 30-th including both bounds
+ res = GET_HASH_VALUE(res);
+ if (res == 0)
+ // needed to have no names before "." and ".." those have hash
+ // value == 0 and generation conters 1 and 2 accordingly
+ res = 128;
+ return res + MAX_GENERATION_NUMBER;
+}
+
+
+static int reiserfs_match (struct reiserfs_dir_entry * de,
+ const char * name, int namelen)
+{
+ int retval = NAME_NOT_FOUND;
+
+ if ((namelen == de->de_namelen) &&
+ !memcmp(de->de_name, name, de->de_namelen))
+ retval = (de_visible (de->de_deh + de->de_entry_num) ? NAME_FOUND : NAME_FOUND_INVISIBLE);
+
+ return retval;
+}
+
+
+/* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
+
+ /* used when hash collisions exist */
+
+
+static int linear_search_in_dir_item (struct cpu_key * key, struct reiserfs_dir_entry * de,
+ const char * name, int namelen)
+{
+ struct reiserfs_de_head * deh = de->de_deh;
+ int retval;
+ int i;
+
+ i = de->de_entry_num;
+
+ if (i == I_ENTRY_COUNT (de->de_ih) ||
+ GET_HASH_VALUE (deh_offset (deh + i)) != GET_HASH_VALUE (cpu_key_k_offset (key))) {
+ i --;
+ }
+
+ RFALSE( de->de_deh != B_I_DEH (de->de_bh, de->de_ih),
+ "vs-7010: array of entry headers not found");
+
+ deh += i;
+
+ for (; i >= 0; i --, deh --) {
+ if (GET_HASH_VALUE (deh_offset (deh)) !=
+ GET_HASH_VALUE (cpu_key_k_offset (key))) {
+ // hash value does not match, no need to check whole name
+ return NAME_NOT_FOUND;
+ }
+
+ /* mark, that this generation number is used */
+ if (de->de_gen_number_bit_string)
+ set_bit (GET_GENERATION_NUMBER (deh_offset (deh)), (unsigned long *)de->de_gen_number_bit_string);
+
+ // calculate pointer to name and namelen
+ de->de_entry_num = i;
+ set_de_name_and_namelen (de);
+
+ if ((retval = reiserfs_match (de, name, namelen)) != NAME_NOT_FOUND) {
+ // de's de_name, de_namelen, de_recordlen are set. Fill the rest:
+
+ // key of pointed object
+ set_de_object_key (de);
+
+ store_de_entry_key (de);
+
+ // retval can be NAME_FOUND or NAME_FOUND_INVISIBLE
+ return retval;
+ }
+ }
+
+ if (GET_GENERATION_NUMBER (le_ih_k_offset (de->de_ih)) == 0)
+ /* we have reached left most entry in the node. In common we
+ have to go to the left neighbor, but if generation counter
+ is 0 already, we know for sure, that there is no name with
+ the same hash value */
+ // FIXME: this work correctly only because hash value can not
+ // be 0. Btw, in case of Yura's hash it is probably possible,
+ // so, this is a bug
+ return NAME_NOT_FOUND;
+
+ RFALSE( de->de_item_num,
+ "vs-7015: two diritems of the same directory in one node?");
+
+ return GOTO_PREVIOUS_ITEM;
+}
+
+
+// may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
+// FIXME: should add something like IOERROR
+static int reiserfs_find_entry (struct inode * dir, const char * name, int namelen,
+ struct path * path_to_entry, struct reiserfs_dir_entry * de)
+{
+ struct cpu_key key_to_search;
+ int retval;
+
+
+ if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize))
+ return NAME_NOT_FOUND;
+
+ /* we will search for this key in the tree */
+ make_cpu_key (&key_to_search, dir,
+ get_third_component (dir->i_sb, name, namelen), TYPE_DIRENTRY, 3);
+
+ while (1) {
+ retval = search_by_entry_key (dir->i_sb, &key_to_search, path_to_entry, de);
+ if (retval == IO_ERROR) {
+ reiserfs_warning (dir->i_sb, "zam-7001: io error in %s",
+ __FUNCTION__);
+ return IO_ERROR;
+ }
+
+ /* compare names for all entries having given hash value */
+ retval = linear_search_in_dir_item (&key_to_search, de, name, namelen);
+ if (retval != GOTO_PREVIOUS_ITEM) {
+ /* there is no need to scan directory anymore. Given entry found or does not exist */
+ path_to_entry->pos_in_item = de->de_entry_num;
+ return retval;
+ }
+
+ /* there is left neighboring item of this directory and given entry can be there */
+ set_cpu_key_k_offset (&key_to_search, le_ih_k_offset (de->de_ih) - 1);
+ pathrelse (path_to_entry);
+
+ } /* while (1) */
+}
+
+
+static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dentry, struct nameidata *nd)
+{
+ int retval;
+ struct inode * inode = NULL;
+ struct reiserfs_dir_entry de;
+ INITIALIZE_PATH (path_to_entry);
+
+ if (REISERFS_MAX_NAME (dir->i_sb->s_blocksize) < dentry->d_name.len)
+ return ERR_PTR(-ENAMETOOLONG);
+
+ reiserfs_write_lock(dir->i_sb);
+ de.de_gen_number_bit_string = NULL;
+ retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path_to_entry, &de);
+ pathrelse (&path_to_entry);
+ if (retval == NAME_FOUND) {
+ /* Hide the .reiserfs_priv directory */
+ if (reiserfs_xattrs (dir->i_sb) &&
+ !old_format_only(dir->i_sb) &&
+ REISERFS_SB(dir->i_sb)->priv_root &&
+ REISERFS_SB(dir->i_sb)->priv_root->d_inode &&
+ de.de_objectid == le32_to_cpu (INODE_PKEY(REISERFS_SB(dir->i_sb)->priv_root->d_inode)->k_objectid)) {
+ reiserfs_write_unlock (dir->i_sb);
+ return ERR_PTR (-EACCES);
+ }
+
+ inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
+ if (!inode || IS_ERR(inode)) {
+ reiserfs_write_unlock(dir->i_sb);
+ return ERR_PTR(-EACCES);
+ }
+
+ /* Propogate the priv_object flag so we know we're in the priv tree */
+ if (is_reiserfs_priv_object (dir))
+ reiserfs_mark_inode_private (inode);
+ }
+ reiserfs_write_unlock(dir->i_sb);
+ if ( retval == IO_ERROR ) {
+ return ERR_PTR(-EIO);
+ }
+
+ if (inode)
+ return d_splice_alias(inode, dentry);
+
+ d_add(dentry, inode);
+ return NULL;
+}
+
+
+/*
+** looks up the dentry of the parent directory for child.
+** taken from ext2_get_parent
+*/
+struct dentry *reiserfs_get_parent(struct dentry *child)
+{
+ int retval;
+ struct inode * inode = NULL;
+ struct reiserfs_dir_entry de;
+ INITIALIZE_PATH (path_to_entry);
+ struct dentry *parent;
+ struct inode *dir = child->d_inode ;
+
+
+ if (dir->i_nlink == 0) {
+ return ERR_PTR(-ENOENT);
+ }
+ de.de_gen_number_bit_string = NULL;
+
+ reiserfs_write_lock(dir->i_sb);
+ retval = reiserfs_find_entry (dir, "..", 2, &path_to_entry, &de);
+ pathrelse (&path_to_entry);
+ if (retval != NAME_FOUND) {
+ reiserfs_write_unlock(dir->i_sb);
+ return ERR_PTR(-ENOENT);
+ }
+ inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
+ reiserfs_write_unlock(dir->i_sb);
+
+ if (!inode || IS_ERR(inode)) {
+ return ERR_PTR(-EACCES);
+ }
+ parent = d_alloc_anon(inode);
+ if (!parent) {
+ iput(inode);
+ parent = ERR_PTR(-ENOMEM);
+ }
+ return parent;
+}
+
+
+/* add entry to the directory (entry can be hidden).
+
+insert definition of when hidden directories are used here -Hans
+
+ Does not mark dir inode dirty, do it after successesfull call to it */
+
+static int reiserfs_add_entry (struct reiserfs_transaction_handle *th, struct inode * dir,
+ const char * name, int namelen, struct inode * inode,
+ int visible)
+{
+ struct cpu_key entry_key;
+ struct reiserfs_de_head * deh;
+ INITIALIZE_PATH (path);
+ struct reiserfs_dir_entry de;
+ int bit_string [MAX_GENERATION_NUMBER / (sizeof(int) * 8) + 1];
+ int gen_number;
+ char small_buf[32+DEH_SIZE] ; /* 48 bytes now and we avoid kmalloc
+ if we create file with short name */
+ char * buffer;
+ int buflen, paste_size;
+ int retval;
+
+ BUG_ON (!th->t_trans_id);
+
+ /* cannot allow items to be added into a busy deleted directory */
+ if (!namelen)
+ return -EINVAL;
+
+ if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize))
+ return -ENAMETOOLONG;
+
+ /* each entry has unique key. compose it */
+ make_cpu_key (&entry_key, dir,
+ get_third_component (dir->i_sb, name, namelen), TYPE_DIRENTRY, 3);
+
+ /* get memory for composing the entry */
+ buflen = DEH_SIZE + ROUND_UP (namelen);
+ if (buflen > sizeof (small_buf)) {
+ buffer = reiserfs_kmalloc (buflen, GFP_NOFS, dir->i_sb);
+ if (buffer == 0)
+ return -ENOMEM;
+ } else
+ buffer = small_buf;
+
+ paste_size = (get_inode_sd_version (dir) == STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
+
+ /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */
+ deh = (struct reiserfs_de_head *)buffer;
+ deh->deh_location = 0; /* JDM Endian safe if 0 */
+ put_deh_offset( deh, cpu_key_k_offset( &entry_key ) );
+ deh->deh_state = 0; /* JDM Endian safe if 0 */
+ /* put key (ino analog) to de */
+ deh->deh_dir_id = INODE_PKEY (inode)->k_dir_id; /* safe: k_dir_id is le */
+ deh->deh_objectid = INODE_PKEY (inode)->k_objectid; /* safe: k_objectid is le */
+
+ /* copy name */
+ memcpy ((char *)(deh + 1), name, namelen);
+ /* padd by 0s to the 4 byte boundary */
+ padd_item ((char *)(deh + 1), ROUND_UP (namelen), namelen);
+
+ /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */
+ mark_de_without_sd (deh);
+ visible ? mark_de_visible (deh) : mark_de_hidden (deh);
+
+ /* find the proper place for the new entry */
+ memset (bit_string, 0, sizeof (bit_string));
+ de.de_gen_number_bit_string = (char *)bit_string;
+ retval = reiserfs_find_entry (dir, name, namelen, &path, &de);
+ if( retval != NAME_NOT_FOUND ) {
+ if (buffer != small_buf)
+ reiserfs_kfree (buffer, buflen, dir->i_sb);
+ pathrelse (&path);
+
+ if ( retval == IO_ERROR ) {
+ return -EIO;
+ }
+
+ if (retval != NAME_FOUND) {
+ reiserfs_warning (dir->i_sb, "zam-7002:%s: \"reiserfs_find_entry\" "
+ "has returned unexpected value (%d)",
+ __FUNCTION__, retval);
+ }
+
+ return -EEXIST;
+ }
+
+ gen_number = find_first_zero_bit ((unsigned long *)bit_string, MAX_GENERATION_NUMBER + 1);
+ if (gen_number > MAX_GENERATION_NUMBER) {
+ /* there is no free generation number */
+ reiserfs_warning (dir->i_sb, "reiserfs_add_entry: Congratulations! we have got hash function screwed up");
+ if (buffer != small_buf)
+ reiserfs_kfree (buffer, buflen, dir->i_sb);
+ pathrelse (&path);
+ return -EBUSY;
+ }
+ /* adjust offset of directory enrty */
+ put_deh_offset(deh, SET_GENERATION_NUMBER(deh_offset(deh), gen_number));
+ set_cpu_key_k_offset (&entry_key, deh_offset(deh));
+
+ /* update max-hash-collisions counter in reiserfs_sb_info */
+ PROC_INFO_MAX( th -> t_super, max_hash_collisions, gen_number );
+
+ if (gen_number != 0) { /* we need to re-search for the insertion point */
+ if (search_by_entry_key (dir->i_sb, &entry_key, &path, &de) != NAME_NOT_FOUND) {
+ reiserfs_warning (dir->i_sb, "vs-7032: reiserfs_add_entry: "
+ "entry with this key (%K) already exists",
+ &entry_key);
+
+ if (buffer != small_buf)
+ reiserfs_kfree (buffer, buflen, dir->i_sb);
+ pathrelse (&path);
+ return -EBUSY;
+ }
+ }
+
+ /* perform the insertion of the entry that we have prepared */
+ retval = reiserfs_paste_into_item (th, &path, &entry_key, dir, buffer, paste_size);
+ if (buffer != small_buf)
+ reiserfs_kfree (buffer, buflen, dir->i_sb);
+ if (retval) {
+ reiserfs_check_path(&path) ;
+ return retval;
+ }
+
+ dir->i_size += paste_size;
+ dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
+ if (!S_ISDIR (inode->i_mode) && visible)
+ // reiserfs_mkdir or reiserfs_rename will do that by itself
+ reiserfs_update_sd (th, dir);
+
+ reiserfs_check_path(&path) ;
+ return 0;
+}
+
+/* quota utility function, call if you've had to abort after calling
+** new_inode_init, and have not called reiserfs_new_inode yet.
+** This should only be called on inodes that do not have stat data
+** inserted into the tree yet.
+*/
+static int drop_new_inode(struct inode *inode) {
+ DQUOT_DROP(inode);
+ make_bad_inode(inode) ;
+ inode->i_flags |= S_NOQUOTA;
+ iput(inode) ;
+ return 0 ;
+}
+
+/* utility function that does setup for reiserfs_new_inode.
+** DQUOT_INIT needs lots of credits so it's better to have it
+** outside of a transaction, so we had to pull some bits of
+** reiserfs_new_inode out into this func.
+*/
+static int new_inode_init(struct inode *inode, struct inode *dir, int mode) {
+
+ /* the quota init calls have to know who to charge the quota to, so
+ ** we have to set uid and gid here
+ */
+ inode->i_uid = current->fsuid;
+ inode->i_mode = mode;
+
+ if (dir->i_mode & S_ISGID) {
+ inode->i_gid = dir->i_gid;
+ if (S_ISDIR(mode))
+ inode->i_mode |= S_ISGID;
+ } else {
+ inode->i_gid = current->fsgid;
+ }
+ DQUOT_INIT(inode);
+ return 0 ;
+}
+
+static int reiserfs_create (struct inode * dir, struct dentry *dentry, int mode,
+ struct nameidata *nd)
+{
+ int retval;
+ struct inode * inode;
+ /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ int jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
+ struct reiserfs_transaction_handle th ;
+ int locked;
+
+ if (!(inode = new_inode(dir->i_sb))) {
+ return -ENOMEM ;
+ }
+ new_inode_init(inode, dir, mode);
+
+ locked = reiserfs_cache_default_acl (dir);
+
+ reiserfs_write_lock(dir->i_sb);
+
+ if (locked)
+ reiserfs_write_lock_xattrs (dir->i_sb);
+
+ retval = journal_begin(&th, dir->i_sb, jbegin_count);
+ if (retval) {
+ drop_new_inode (inode);
+ goto out_failed;
+ }
+
+ retval = reiserfs_new_inode (&th, dir, mode, 0, 0/*i_size*/, dentry, inode);
+ if (retval)
+ goto out_failed;
+
+ if (locked) {
+ reiserfs_write_unlock_xattrs (dir->i_sb);
+ locked = 0;
+ }
+
+ inode->i_op = &reiserfs_file_inode_operations;
+ inode->i_fop = &reiserfs_file_operations;
+ inode->i_mapping->a_ops = &reiserfs_address_space_operations ;
+
+ retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
+ inode, 1/*visible*/);
+ if (retval) {
+ int err;
+ inode->i_nlink--;
+ reiserfs_update_sd (&th, inode);
+ err = journal_end(&th, dir->i_sb, jbegin_count) ;
+ if (err)
+ retval = err;
+ iput (inode);
+ goto out_failed;
+ }
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(dir) ;
+
+ d_instantiate(dentry, inode);
+ retval = journal_end(&th, dir->i_sb, jbegin_count) ;
+
+out_failed:
+ if (locked)
+ reiserfs_write_unlock_xattrs (dir->i_sb);
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+}
+
+
+static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t rdev)
+{
+ int retval;
+ struct inode * inode;
+ struct reiserfs_transaction_handle th ;
+ /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
+ int locked;
+
+ if (!new_valid_dev(rdev))
+ return -EINVAL;
+
+ if (!(inode = new_inode(dir->i_sb))) {
+ return -ENOMEM ;
+ }
+ new_inode_init(inode, dir, mode);
+
+ locked = reiserfs_cache_default_acl (dir);
+
+ reiserfs_write_lock(dir->i_sb);
+
+ if (locked)
+ reiserfs_write_lock_xattrs (dir->i_sb);
+
+ retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
+ if (retval) {
+ drop_new_inode (inode);
+ goto out_failed;
+ }
+
+ retval = reiserfs_new_inode (&th, dir, mode, NULL, 0/*i_size*/, dentry, inode);
+ if (retval) {
+ goto out_failed;
+ }
+
+ if (locked) {
+ reiserfs_write_unlock_xattrs (dir->i_sb);
+ locked = 0;
+ }
+
+
+ inode->i_op = &reiserfs_special_inode_operations;
+ init_special_inode(inode, inode->i_mode, rdev) ;
+
+ //FIXME: needed for block and char devices only
+ reiserfs_update_sd (&th, inode);
+
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(dir) ;
+
+ retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
+ inode, 1/*visible*/);
+ if (retval) {
+ int err;
+ inode->i_nlink--;
+ reiserfs_update_sd (&th, inode);
+ err = journal_end(&th, dir->i_sb, jbegin_count) ;
+ if (err)
+ retval = err;
+ iput (inode);
+ goto out_failed;
+ }
+
+ d_instantiate(dentry, inode);
+ retval = journal_end(&th, dir->i_sb, jbegin_count) ;
+
+out_failed:
+ if (locked)
+ reiserfs_write_unlock_xattrs (dir->i_sb);
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+}
+
+
+static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int mode)
+{
+ int retval;
+ struct inode * inode;
+ struct reiserfs_transaction_handle th ;
+ /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
+ int locked;
+
+#ifdef DISPLACE_NEW_PACKING_LOCALITIES
+ /* set flag that new packing locality created and new blocks for the content * of that directory are not displaced yet */
+ REISERFS_I(dir)->new_packing_locality = 1;
+#endif
+ mode = S_IFDIR | mode;
+ if (!(inode = new_inode(dir->i_sb))) {
+ return -ENOMEM ;
+ }
+ new_inode_init(inode, dir, mode);
+
+ locked = reiserfs_cache_default_acl (dir);
+
+ reiserfs_write_lock(dir->i_sb);
+ if (locked)
+ reiserfs_write_lock_xattrs (dir->i_sb);
+
+ retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
+ if (retval) {
+ drop_new_inode (inode);
+ goto out_failed;
+ }
+
+
+ /* inc the link count now, so another writer doesn't overflow it while
+ ** we sleep later on.
+ */
+ INC_DIR_INODE_NLINK(dir)
+
+ retval = reiserfs_new_inode (&th, dir, mode, NULL/*symlink*/,
+ old_format_only (dir->i_sb) ?
+ EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
+ dentry, inode);
+ if (retval) {
+ dir->i_nlink-- ;
+ goto out_failed;
+ }
+
+ if (locked) {
+ reiserfs_write_unlock_xattrs (dir->i_sb);
+ locked = 0;
+ }
+
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(dir) ;
+
+ inode->i_op = &reiserfs_dir_inode_operations;
+ inode->i_fop = &reiserfs_dir_operations;
+
+ // note, _this_ add_entry will not update dir's stat data
+ retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
+ inode, 1/*visible*/);
+ if (retval) {
+ int err;
+ inode->i_nlink = 0;
+ DEC_DIR_INODE_NLINK(dir);
+ reiserfs_update_sd (&th, inode);
+ err = journal_end(&th, dir->i_sb, jbegin_count) ;
+ if (err)
+ retval = err;
+ iput (inode);
+ goto out_failed;
+ }
+
+ // the above add_entry did not update dir's stat data
+ reiserfs_update_sd (&th, dir);
+
+ d_instantiate(dentry, inode);
+ retval = journal_end(&th, dir->i_sb, jbegin_count) ;
+out_failed:
+ if (locked)
+ reiserfs_write_unlock_xattrs (dir->i_sb);
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+}
+
+static inline int reiserfs_empty_dir(struct inode *inode) {
+ /* we can cheat because an old format dir cannot have
+ ** EMPTY_DIR_SIZE, and a new format dir cannot have
+ ** EMPTY_DIR_SIZE_V1. So, if the inode is either size,
+ ** regardless of disk format version, the directory is empty.
+ */
+ if (inode->i_size != EMPTY_DIR_SIZE &&
+ inode->i_size != EMPTY_DIR_SIZE_V1) {
+ return 0 ;
+ }
+ return 1 ;
+}
+
+static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry)
+{
+ int retval, err;
+ struct inode * inode;
+ struct reiserfs_transaction_handle th ;
+ int jbegin_count;
+ INITIALIZE_PATH (path);
+ struct reiserfs_dir_entry de;
+
+
+ /* we will be doing 2 balancings and update 2 stat data, we change quotas
+ * of the owner of the directory and of the owner of the parent directory */
+ jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
+
+ reiserfs_write_lock(dir->i_sb);
+ retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
+ if (retval)
+ goto out_rmdir;
+
+ de.de_gen_number_bit_string = NULL;
+ if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) {
+ retval = -ENOENT;
+ goto end_rmdir;
+ } else if ( retval == IO_ERROR) {
+ retval = -EIO;
+ goto end_rmdir;
+ }
+
+ inode = dentry->d_inode;
+
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(dir) ;
+
+ if (de.de_objectid != inode->i_ino) {
+ // FIXME: compare key of an object and a key found in the
+ // entry
+ retval = -EIO;
+ goto end_rmdir;
+ }
+ if (!reiserfs_empty_dir(inode)) {
+ retval = -ENOTEMPTY;
+ goto end_rmdir;
+ }
+
+ /* cut entry from dir directory */
+ retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir,
+ NULL, /* page */
+ 0/*new file size - not used here*/);
+ if (retval < 0)
+ goto end_rmdir;
+
+ if ( inode->i_nlink != 2 && inode->i_nlink != 1 )
+ reiserfs_warning (inode->i_sb, "%s: empty directory has nlink "
+ "!= 2 (%d)", __FUNCTION__, inode->i_nlink);
+
+ inode->i_nlink = 0;
+ inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
+ reiserfs_update_sd (&th, inode);
+
+ DEC_DIR_INODE_NLINK(dir)
+ dir->i_size -= (DEH_SIZE + de.de_entrylen);
+ reiserfs_update_sd (&th, dir);
+
+ /* prevent empty directory from getting lost */
+ add_save_link (&th, inode, 0/* not truncate */);
+
+ retval = journal_end(&th, dir->i_sb, jbegin_count) ;
+ reiserfs_check_path(&path) ;
+out_rmdir:
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+
+ end_rmdir:
+ /* we must release path, because we did not call
+ reiserfs_cut_from_item, or reiserfs_cut_from_item does not
+ release path if operation was not complete */
+ pathrelse (&path);
+ err = journal_end(&th, dir->i_sb, jbegin_count) ;
+ reiserfs_write_unlock(dir->i_sb);
+ return err ? err : retval;
+}
+
+static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
+{
+ int retval, err;
+ struct inode * inode;
+ struct reiserfs_dir_entry de;
+ INITIALIZE_PATH (path);
+ struct reiserfs_transaction_handle th ;
+ int jbegin_count;
+ unsigned long savelink;
+
+ inode = dentry->d_inode;
+
+ /* in this transaction we can be doing at max two balancings and update
+ two stat datas, we change quotas of the owner of the directory and of
+ the owner of the parent directory */
+ jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
+
+ reiserfs_write_lock(dir->i_sb);
+ retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
+ if (retval)
+ goto out_unlink;
+
+ de.de_gen_number_bit_string = NULL;
+ if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) {
+ retval = -ENOENT;
+ goto end_unlink;
+ } else if (retval == IO_ERROR) {
+ retval = -EIO;
+ goto end_unlink;
+ }
+
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(dir) ;
+
+ if (de.de_objectid != inode->i_ino) {
+ // FIXME: compare key of an object and a key found in the
+ // entry
+ retval = -EIO;
+ goto end_unlink;
+ }
+
+ if (!inode->i_nlink) {
+ reiserfs_warning (inode->i_sb, "%s: deleting nonexistent file "
+ "(%s:%lu), %d", __FUNCTION__,
+ reiserfs_bdevname (inode->i_sb), inode->i_ino,
+ inode->i_nlink);
+ inode->i_nlink = 1;
+ }
+
+ inode->i_nlink--;
+
+ /*
+ * we schedule before doing the add_save_link call, save the link
+ * count so we don't race
+ */
+ savelink = inode->i_nlink;
+
+
+ retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir, NULL, 0);
+ if (retval < 0) {
+ inode->i_nlink++;
+ goto end_unlink;
+ }
+ inode->i_ctime = CURRENT_TIME_SEC;
+ reiserfs_update_sd (&th, inode);
+
+ dir->i_size -= (de.de_entrylen + DEH_SIZE);
+ dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
+ reiserfs_update_sd (&th, dir);
+
+ if (!savelink)
+ /* prevent file from getting lost */
+ add_save_link (&th, inode, 0/* not truncate */);
+
+ retval = journal_end(&th, dir->i_sb, jbegin_count) ;
+ reiserfs_check_path(&path) ;
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+
+ end_unlink:
+ pathrelse (&path);
+ err = journal_end(&th, dir->i_sb, jbegin_count) ;
+ reiserfs_check_path(&path) ;
+ if (err)
+ retval = err;
+out_unlink:
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+}
+
+static int reiserfs_symlink (struct inode * parent_dir,
+ struct dentry * dentry, const char * symname)
+{
+ int retval;
+ struct inode * inode;
+ char * name;
+ int item_len;
+ struct reiserfs_transaction_handle th ;
+ int mode = S_IFLNK | S_IRWXUGO;
+ /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
+
+ if (!(inode = new_inode(parent_dir->i_sb))) {
+ return -ENOMEM ;
+ }
+ new_inode_init(inode, parent_dir, mode);
+
+ reiserfs_write_lock(parent_dir->i_sb);
+ item_len = ROUND_UP (strlen (symname));
+ if (item_len > MAX_DIRECT_ITEM_LEN (parent_dir->i_sb->s_blocksize)) {
+ retval = -ENAMETOOLONG;
+ drop_new_inode(inode);
+ goto out_failed;
+ }
+
+ name = reiserfs_kmalloc (item_len, GFP_NOFS, parent_dir->i_sb);
+ if (!name) {
+ drop_new_inode(inode);
+ retval = -ENOMEM;
+ goto out_failed;
+ }
+ memcpy (name, symname, strlen (symname));
+ padd_item (name, item_len, strlen (symname));
+
+ /* We would inherit the default ACL here, but symlinks don't get ACLs */
+
+ retval = journal_begin(&th, parent_dir->i_sb, jbegin_count) ;
+ if (retval) {
+ drop_new_inode (inode);
+ reiserfs_kfree (name, item_len, parent_dir->i_sb);
+ goto out_failed;
+ }
+
+ retval = reiserfs_new_inode (&th, parent_dir, mode, name, strlen (symname),
+ dentry, inode);
+ reiserfs_kfree (name, item_len, parent_dir->i_sb);
+ if (retval) { /* reiserfs_new_inode iputs for us */
+ goto out_failed;
+ }
+
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(parent_dir) ;
+
+ inode->i_op = &reiserfs_symlink_inode_operations;
+ inode->i_mapping->a_ops = &reiserfs_address_space_operations;
+
+ // must be sure this inode is written with this transaction
+ //
+ //reiserfs_update_sd (&th, inode, READ_BLOCKS);
+
+ retval = reiserfs_add_entry (&th, parent_dir, dentry->d_name.name,
+ dentry->d_name.len, inode, 1/*visible*/);
+ if (retval) {
+ int err;
+ inode->i_nlink--;
+ reiserfs_update_sd (&th, inode);
+ err = journal_end(&th, parent_dir->i_sb, jbegin_count) ;
+ if (err)
+ retval = err;
+ iput (inode);
+ goto out_failed;
+ }
+
+ d_instantiate(dentry, inode);
+ retval = journal_end(&th, parent_dir->i_sb, jbegin_count) ;
+out_failed:
+ reiserfs_write_unlock(parent_dir->i_sb);
+ return retval;
+}
+
+static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct dentry * dentry)
+{
+ int retval;
+ struct inode *inode = old_dentry->d_inode;
+ struct reiserfs_transaction_handle th ;
+ /* We need blocks for transaction + update of quotas for the owners of the directory */
+ int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 2 * REISERFS_QUOTA_TRANS_BLOCKS;
+
+ reiserfs_write_lock(dir->i_sb);
+ if (inode->i_nlink >= REISERFS_LINK_MAX) {
+ //FIXME: sd_nlink is 32 bit for new files
+ reiserfs_write_unlock(dir->i_sb);
+ return -EMLINK;
+ }
+ if (inode->i_nlink == 0) {
+ reiserfs_write_unlock(dir->i_sb);
+ return -ENOENT;
+ }
+
+ /* inc before scheduling so reiserfs_unlink knows we are here */
+ inode->i_nlink++;
+
+ retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
+ if (retval) {
+ inode->i_nlink--;
+ reiserfs_write_unlock (dir->i_sb);
+ return retval;
+ }
+
+ /* create new entry */
+ retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len,
+ inode, 1/*visible*/);
+
+ reiserfs_update_inode_transaction(inode) ;
+ reiserfs_update_inode_transaction(dir) ;
+
+ if (retval) {
+ int err;
+ inode->i_nlink--;
+ err = journal_end(&th, dir->i_sb, jbegin_count) ;
+ reiserfs_write_unlock(dir->i_sb);
+ return err ? err : retval;
+ }
+
+ inode->i_ctime = CURRENT_TIME_SEC;
+ reiserfs_update_sd (&th, inode);
+
+ atomic_inc(&inode->i_count) ;
+ d_instantiate(dentry, inode);
+ retval = journal_end(&th, dir->i_sb, jbegin_count) ;
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+}
+
+
+// de contains information pointing to an entry which
+static int de_still_valid (const char * name, int len, struct reiserfs_dir_entry * de)
+{
+ struct reiserfs_dir_entry tmp = *de;
+
+ // recalculate pointer to name and name length
+ set_de_name_and_namelen (&tmp);
+ // FIXME: could check more
+ if (tmp.de_namelen != len || memcmp (name, de->de_name, len))
+ return 0;
+ return 1;
+}
+
+
+static int entry_points_to_object (const char * name, int len, struct reiserfs_dir_entry * de, struct inode * inode)
+{
+ if (!de_still_valid (name, len, de))
+ return 0;
+
+ if (inode) {
+ if (!de_visible (de->de_deh + de->de_entry_num))
+ reiserfs_panic (NULL, "vs-7042: entry_points_to_object: entry must be visible");
+ return (de->de_objectid == inode->i_ino) ? 1 : 0;
+ }
+
+ /* this must be added hidden entry */
+ if (de_visible (de->de_deh + de->de_entry_num))
+ reiserfs_panic (NULL, "vs-7043: entry_points_to_object: entry must be visible");
+
+ return 1;
+}
+
+
+/* sets key of objectid the entry has to point to */
+static void set_ino_in_dir_entry (struct reiserfs_dir_entry * de, struct reiserfs_key * key)
+{
+ /* JDM These operations are endian safe - both are le */
+ de->de_deh[de->de_entry_num].deh_dir_id = key->k_dir_id;
+ de->de_deh[de->de_entry_num].deh_objectid = key->k_objectid;
+}
+
+
+/*
+ * process, that is going to call fix_nodes/do_balance must hold only
+ * one path. If it holds 2 or more, it can get into endless waiting in
+ * get_empty_nodes or its clones
+ */
+static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
+ struct inode * new_dir, struct dentry *new_dentry)
+{
+ int retval;
+ INITIALIZE_PATH (old_entry_path);
+ INITIALIZE_PATH (new_entry_path);
+ INITIALIZE_PATH (dot_dot_entry_path);
+ struct item_head new_entry_ih, old_entry_ih, dot_dot_ih ;
+ struct reiserfs_dir_entry old_de, new_de, dot_dot_de;
+ struct inode * old_inode, * new_dentry_inode;
+ struct reiserfs_transaction_handle th ;
+ int jbegin_count ;
+ umode_t old_inode_mode;
+ unsigned long savelink = 1;
+ struct timespec ctime;
+
+ /* three balancings: (1) old name removal, (2) new name insertion
+ and (3) maybe "save" link insertion
+ stat data updates: (1) old directory,
+ (2) new directory and (3) maybe old object stat data (when it is
+ directory) and (4) maybe stat data of object to which new entry
+ pointed initially and (5) maybe block containing ".." of
+ renamed directory
+ quota updates: two parent directories */
+ jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 5 + 4 * REISERFS_QUOTA_TRANS_BLOCKS;
+
+ old_inode = old_dentry->d_inode;
+ new_dentry_inode = new_dentry->d_inode;
+
+ // make sure, that oldname still exists and points to an object we
+ // are going to rename
+ old_de.de_gen_number_bit_string = NULL;
+ reiserfs_write_lock(old_dir->i_sb);
+ retval = reiserfs_find_entry (old_dir, old_dentry->d_name.name, old_dentry->d_name.len,
+ &old_entry_path, &old_de);
+ pathrelse (&old_entry_path);
+ if (retval == IO_ERROR) {
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -EIO;
+ }
+
+ if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -ENOENT;
+ }
+
+ old_inode_mode = old_inode->i_mode;
+ if (S_ISDIR(old_inode_mode)) {
+ // make sure, that directory being renamed has correct ".."
+ // and that its new parent directory has not too many links
+ // already
+
+ if (new_dentry_inode) {
+ if (!reiserfs_empty_dir(new_dentry_inode)) {
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -ENOTEMPTY;
+ }
+ }
+
+ /* directory is renamed, its parent directory will be changed,
+ ** so find ".." entry
+ */
+ dot_dot_de.de_gen_number_bit_string = NULL;
+ retval = reiserfs_find_entry (old_inode, "..", 2, &dot_dot_entry_path, &dot_dot_de);
+ pathrelse (&dot_dot_entry_path);
+ if (retval != NAME_FOUND) {
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -EIO;
+ }
+
+ /* inode number of .. must equal old_dir->i_ino */
+ if (dot_dot_de.de_objectid != old_dir->i_ino) {
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -EIO;
+ }
+ }
+
+ retval = journal_begin(&th, old_dir->i_sb, jbegin_count) ;
+ if (retval) {
+ reiserfs_write_unlock (old_dir->i_sb);
+ return retval;
+ }
+
+ /* add new entry (or find the existing one) */
+ retval = reiserfs_add_entry (&th, new_dir, new_dentry->d_name.name, new_dentry->d_name.len,
+ old_inode, 0);
+ if (retval == -EEXIST) {
+ if (!new_dentry_inode) {
+ reiserfs_panic (old_dir->i_sb,
+ "vs-7050: new entry is found, new inode == 0\n");
+ }
+ } else if (retval) {
+ int err = journal_end(&th, old_dir->i_sb, jbegin_count) ;
+ reiserfs_write_unlock(old_dir->i_sb);
+ return err ? err : retval;
+ }
+
+ reiserfs_update_inode_transaction(old_dir) ;
+ reiserfs_update_inode_transaction(new_dir) ;
+
+ /* this makes it so an fsync on an open fd for the old name will
+ ** commit the rename operation
+ */
+ reiserfs_update_inode_transaction(old_inode) ;
+
+ if (new_dentry_inode)
+ reiserfs_update_inode_transaction(new_dentry_inode) ;
+
+ while (1) {
+ // look for old name using corresponding entry key (found by reiserfs_find_entry)
+ if ((retval = search_by_entry_key (new_dir->i_sb, &old_de.de_entry_key,
+ &old_entry_path, &old_de)) != NAME_FOUND) {
+ pathrelse(&old_entry_path);
+ journal_end(&th, old_dir->i_sb, jbegin_count);
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -EIO;
+ }
+
+ copy_item_head(&old_entry_ih, get_ih(&old_entry_path)) ;
+
+ reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1) ;
+
+ // look for new name by reiserfs_find_entry
+ new_de.de_gen_number_bit_string = NULL;
+ retval = reiserfs_find_entry (new_dir, new_dentry->d_name.name, new_dentry->d_name.len,
+ &new_entry_path, &new_de);
+ // reiserfs_add_entry should not return IO_ERROR, because it is called with essentially same parameters from
+ // reiserfs_add_entry above, and we'll catch any i/o errors before we get here.
+ if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND) {
+ pathrelse(&new_entry_path);
+ pathrelse(&old_entry_path);
+ journal_end(&th, old_dir->i_sb, jbegin_count);
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -EIO;
+ }
+
+ copy_item_head(&new_entry_ih, get_ih(&new_entry_path)) ;
+
+ reiserfs_prepare_for_journal(old_inode->i_sb, new_de.de_bh, 1) ;
+
+ if (S_ISDIR(old_inode->i_mode)) {
+ if ((retval = search_by_entry_key (new_dir->i_sb, &dot_dot_de.de_entry_key,
+ &dot_dot_entry_path, &dot_dot_de)) != NAME_FOUND) {
+ pathrelse(&dot_dot_entry_path);
+ pathrelse(&new_entry_path);
+ pathrelse(&old_entry_path);
+ journal_end(&th, old_dir->i_sb, jbegin_count);
+ reiserfs_write_unlock(old_dir->i_sb);
+ return -EIO;
+ }
+ copy_item_head(&dot_dot_ih, get_ih(&dot_dot_entry_path)) ;
+ // node containing ".." gets into transaction
+ reiserfs_prepare_for_journal(old_inode->i_sb, dot_dot_de.de_bh, 1) ;
+ }
+ /* we should check seals here, not do
+ this stuff, yes? Then, having
+ gathered everything into RAM we
+ should lock the buffers, yes? -Hans */
+ /* probably. our rename needs to hold more
+ ** than one path at once. The seals would
+ ** have to be written to deal with multi-path
+ ** issues -chris
+ */
+ /* sanity checking before doing the rename - avoid races many
+ ** of the above checks could have scheduled. We have to be
+ ** sure our items haven't been shifted by another process.
+ */
+ if (item_moved(&new_entry_ih, &new_entry_path) ||
+ !entry_points_to_object(new_dentry->d_name.name,
+ new_dentry->d_name.len,
+ &new_de, new_dentry_inode) ||
+ item_moved(&old_entry_ih, &old_entry_path) ||
+ !entry_points_to_object (old_dentry->d_name.name,
+ old_dentry->d_name.len,
+ &old_de, old_inode)) {
+ reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh);
+ reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
+ if (S_ISDIR(old_inode_mode))
+ reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh);
+ continue;
+ }
+ if (S_ISDIR(old_inode_mode)) {
+ if ( item_moved(&dot_dot_ih, &dot_dot_entry_path) ||
+ !entry_points_to_object ( "..", 2, &dot_dot_de, old_dir) ) {
+ reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
+ reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh);
+ reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh);
+ continue;
+ }
+ }
+
+ RFALSE( S_ISDIR(old_inode_mode) &&
+ !buffer_journal_prepared(dot_dot_de.de_bh), "" );
+
+ break;
+ }
+
+ /* ok, all the changes can be done in one fell swoop when we
+ have claimed all the buffers needed.*/
+
+ mark_de_visible (new_de.de_deh + new_de.de_entry_num);
+ set_ino_in_dir_entry (&new_de, INODE_PKEY (old_inode));
+ journal_mark_dirty (&th, old_dir->i_sb, new_de.de_bh);
+
+ mark_de_hidden (old_de.de_deh + old_de.de_entry_num);
+ journal_mark_dirty (&th, old_dir->i_sb, old_de.de_bh);
+ ctime = CURRENT_TIME_SEC;
+ old_dir->i_ctime = old_dir->i_mtime = ctime;
+ new_dir->i_ctime = new_dir->i_mtime = ctime;
+ /* thanks to Alex Adriaanse <alex_a@caltech.edu> for patch which adds ctime update of
+ renamed object */
+ old_inode->i_ctime = ctime;
+
+ if (new_dentry_inode) {
+ // adjust link number of the victim
+ if (S_ISDIR(new_dentry_inode->i_mode)) {
+ new_dentry_inode->i_nlink = 0;
+ } else {
+ new_dentry_inode->i_nlink--;
+ }
+ new_dentry_inode->i_ctime = ctime;
+ savelink = new_dentry_inode->i_nlink;
+ }
+
+ if (S_ISDIR(old_inode_mode)) {
+ // adjust ".." of renamed directory
+ set_ino_in_dir_entry (&dot_dot_de, INODE_PKEY (new_dir));
+ journal_mark_dirty (&th, new_dir->i_sb, dot_dot_de.de_bh);
+
+ if (!new_dentry_inode)
+ /* there (in new_dir) was no directory, so it got new link
+ (".." of renamed directory) */
+ INC_DIR_INODE_NLINK(new_dir);
+
+ /* old directory lost one link - ".. " of renamed directory */
+ DEC_DIR_INODE_NLINK(old_dir);
+ }
+
+ // looks like in 2.3.99pre3 brelse is atomic. so we can use pathrelse
+ pathrelse (&new_entry_path);
+ pathrelse (&dot_dot_entry_path);
+
+ // FIXME: this reiserfs_cut_from_item's return value may screw up
+ // anybody, but it will panic if will not be able to find the
+ // entry. This needs one more clean up
+ if (reiserfs_cut_from_item (&th, &old_entry_path, &(old_de.de_entry_key), old_dir, NULL, 0) < 0)
+ reiserfs_warning (old_dir->i_sb, "vs-7060: reiserfs_rename: couldn't not cut old name. Fsck later?");
+
+ old_dir->i_size -= DEH_SIZE + old_de.de_entrylen;
+
+ reiserfs_update_sd (&th, old_dir);
+ reiserfs_update_sd (&th, new_dir);
+ reiserfs_update_sd (&th, old_inode);
+
+ if (new_dentry_inode) {
+ if (savelink == 0)
+ add_save_link (&th, new_dentry_inode, 0/* not truncate */);
+ reiserfs_update_sd (&th, new_dentry_inode);
+ }
+
+ retval = journal_end(&th, old_dir->i_sb, jbegin_count) ;
+ reiserfs_write_unlock(old_dir->i_sb);
+ return retval;
+}
+
+/*
+ * directories can handle most operations...
+ */
+struct inode_operations reiserfs_dir_inode_operations = {
+ //&reiserfs_dir_operations, /* default_file_ops */
+ .create = reiserfs_create,
+ .lookup = reiserfs_lookup,
+ .link = reiserfs_link,
+ .unlink = reiserfs_unlink,
+ .symlink = reiserfs_symlink,
+ .mkdir = reiserfs_mkdir,
+ .rmdir = reiserfs_rmdir,
+ .mknod = reiserfs_mknod,
+ .rename = reiserfs_rename,
+ .setattr = reiserfs_setattr,
+ .setxattr = reiserfs_setxattr,
+ .getxattr = reiserfs_getxattr,
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
+};
+
+/*
+ * symlink operations.. same as page_symlink_inode_operations, with xattr
+ * stuff added
+ */
+struct inode_operations reiserfs_symlink_inode_operations = {
+ .readlink = generic_readlink,
+ .follow_link = page_follow_link_light,
+ .put_link = page_put_link,
+ .setattr = reiserfs_setattr,
+ .setxattr = reiserfs_setxattr,
+ .getxattr = reiserfs_getxattr,
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
+
+};
+
+
+/*
+ * special file operations.. just xattr/acl stuff
+ */
+struct inode_operations reiserfs_special_inode_operations = {
+ .setattr = reiserfs_setattr,
+ .setxattr = reiserfs_setxattr,
+ .getxattr = reiserfs_getxattr,
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
+
+};