fs/hfs/catalog.c - kernel/msm-4.9 - Gitiles

 /*
  *  linux/fs/hfs/catalog.c
  *
  * Copyright (C) 1995-1997  Paul H. Hargrove
  * (C) 2003 Ardis Technologies <roman@ardistech.com>
  * This file may be distributed under the terms of the GNU General Public License.
  *
  * This file contains the functions related to the catalog B-tree.
  *
  * Cache code shamelessly stolen from
  *     linux/fs/inode.c Copyright (C) 1991, 1992  Linus Torvalds
  *     re-shamelessly stolen Copyright (C) 1997 Linus Torvalds
  */

 #include "hfs_fs.h"
 #include "btree.h"

 /*
  * hfs_cat_build_key()
  *
  * Given the ID of the parent and the name build a search key.
  */
 void hfs_cat_build_key(struct super_block *sb, btree_key *key, u32 parent, struct qstr *name)
 {
 	key->cat.reserved = 0;
 	key->cat.ParID = cpu_to_be32(parent);
 	if (name) {
 		hfs_asc2mac(sb, &key->cat.CName, name);
 		key->key_len = 6 + key->cat.CName.len;
 	} else {
 		memset(&key->cat.CName, 0, sizeof(struct hfs_name));
 		key->key_len = 6;
 	}
 }

 static int hfs_cat_build_record(hfs_cat_rec *rec, u32 cnid, struct inode *inode)
 {
 	__be32 mtime = hfs_mtime();

 	memset(rec, 0, sizeof(*rec));
 	if (S_ISDIR(inode->i_mode)) {
 		rec->type = HFS_CDR_DIR;
 		rec->dir.DirID = cpu_to_be32(cnid);
 		rec->dir.CrDat = mtime;
 		rec->dir.MdDat = mtime;
 		rec->dir.BkDat = 0;
 		rec->dir.UsrInfo.frView = cpu_to_be16(0xff);
 		return sizeof(struct hfs_cat_dir);
 	} else {
 		/* init some fields for the file record */
 		rec->type = HFS_CDR_FIL;
 		rec->file.Flags = HFS_FIL_USED | HFS_FIL_THD;
 		if (!(inode->i_mode & S_IWUSR))
 			rec->file.Flags |= HFS_FIL_LOCK;
 		rec->file.FlNum = cpu_to_be32(cnid);
 		rec->file.CrDat = mtime;
 		rec->file.MdDat = mtime;
 		rec->file.BkDat = 0;
 		rec->file.UsrWds.fdType = HFS_SB(inode->i_sb)->s_type;
 		rec->file.UsrWds.fdCreator = HFS_SB(inode->i_sb)->s_creator;
 		return sizeof(struct hfs_cat_file);
 	}
 }

 static int hfs_cat_build_thread(struct super_block *sb,
 				hfs_cat_rec *rec, int type,
 				u32 parentid, struct qstr *name)
 {
 	rec->type = type;
 	memset(rec->thread.reserved, 0, sizeof(rec->thread.reserved));
 	rec->thread.ParID = cpu_to_be32(parentid);
 	hfs_asc2mac(sb, &rec->thread.CName, name);
 	return sizeof(struct hfs_cat_thread);
 }

 /*
  * create_entry()
  *
  * Add a new file or directory to the catalog B-tree and
  * return a (struct hfs_cat_entry) for it in '*result'.
  */
 int hfs_cat_create(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode)
 {
 	struct hfs_find_data fd;
 	struct super_block *sb;
 	union hfs_cat_rec entry;
 	int entry_size;
 	int err;

 	dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
 	if (dir->i_size >= HFS_MAX_VALENCE)
 		return -ENOSPC;

 	sb = dir->i_sb;
 	hfs_find_init(HFS_SB(sb)->cat_tree, &fd);

 	hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
 	entry_size = hfs_cat_build_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
 			HFS_CDR_THD : HFS_CDR_FTH,
 			dir->i_ino, str);
 	err = hfs_brec_find(&fd);
 	if (err != -ENOENT) {
 		if (!err)
 			err = -EEXIST;
 		goto err2;
 	}
 	err = hfs_brec_insert(&fd, &entry, entry_size);
 	if (err)
 		goto err2;

 	hfs_cat_build_key(sb, fd.search_key, dir->i_ino, str);
 	entry_size = hfs_cat_build_record(&entry, cnid, inode);
 	err = hfs_brec_find(&fd);
 	if (err != -ENOENT) {
 		/* panic? */
 		if (!err)
 			err = -EEXIST;
 		goto err1;
 	}
 	err = hfs_brec_insert(&fd, &entry, entry_size);
 	if (err)
 		goto err1;

 	dir->i_size++;
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(dir);
 	hfs_find_exit(&fd);
 	return 0;

 err1:
 	hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
 	if (!hfs_brec_find(&fd))
 		hfs_brec_remove(&fd);
 err2:
 	hfs_find_exit(&fd);
 	return err;
 }

 /*
  * hfs_cat_compare()
  *
  * Description:
  *   This is the comparison function used for the catalog B-tree.  In
  *   comparing catalog B-tree entries, the parent id is the most
  *   significant field (compared as unsigned ints).  The name field is
  *   the least significant (compared in "Macintosh lexical order",
  *   see hfs_strcmp() in string.c)
  * Input Variable(s):
  *   struct hfs_cat_key *key1: pointer to the first key to compare
  *   struct hfs_cat_key *key2: pointer to the second key to compare
  * Output Variable(s):
  *   NONE
  * Returns:
  *   int: negative if key1<key2, positive if key1>key2, and 0 if key1==key2
  * Preconditions:
  *   key1 and key2 point to "valid" (struct hfs_cat_key)s.
  * Postconditions:
  *   This function has no side-effects
  */
 int hfs_cat_keycmp(const btree_key *key1, const btree_key *key2)
 {
 	int retval;

 	retval = be32_to_cpu(key1->cat.ParID) - be32_to_cpu(key2->cat.ParID);
 	if (!retval)
 		retval = hfs_strcmp(key1->cat.CName.name, key1->cat.CName.len,
 				    key2->cat.CName.name, key2->cat.CName.len);

 	return retval;
 }

 /* Try to get a catalog entry for given catalog id */
 // move to read_super???
 int hfs_cat_find_brec(struct super_block *sb, u32 cnid,
 		      struct hfs_find_data *fd)
 {
 	hfs_cat_rec rec;
 	int res, len, type;

 	hfs_cat_build_key(sb, fd->search_key, cnid, NULL);
 	res = hfs_brec_read(fd, &rec, sizeof(rec));
 	if (res)
 		return res;

 	type = rec.type;
 	if (type != HFS_CDR_THD && type != HFS_CDR_FTH) {
 		printk(KERN_ERR "hfs: found bad thread record in catalog\n");
 		return -EIO;
 	}

 	fd->search_key->cat.ParID = rec.thread.ParID;
 	len = fd->search_key->cat.CName.len = rec.thread.CName.len;
 	memcpy(fd->search_key->cat.CName.name, rec.thread.CName.name, len);
 	return hfs_brec_find(fd);
 }


 /*
  * hfs_cat_delete()
  *
  * Delete the indicated file or directory.
  * The associated thread is also removed unless ('with_thread'==0).
  */
 int hfs_cat_delete(u32 cnid, struct inode *dir, struct qstr *str)
 {
 	struct super_block *sb;
 	struct hfs_find_data fd;
 	struct list_head *pos;
 	int res, type;

 	dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
 	sb = dir->i_sb;
 	hfs_find_init(HFS_SB(sb)->cat_tree, &fd);

 	hfs_cat_build_key(sb, fd.search_key, dir->i_ino, str);
 	res = hfs_brec_find(&fd);
 	if (res)
 		goto out;

 	type = hfs_bnode_read_u8(fd.bnode, fd.entryoffset);
 	if (type == HFS_CDR_FIL) {
 		struct hfs_cat_file file;
 		hfs_bnode_read(fd.bnode, &file, fd.entryoffset, sizeof(file));
 		if (be32_to_cpu(file.FlNum) == cnid) {
 #if 0
 			hfs_free_fork(sb, &file, HFS_FK_DATA);
 #endif
 			hfs_free_fork(sb, &file, HFS_FK_RSRC);
 		}
 	}

 	list_for_each(pos, &HFS_I(dir)->open_dir_list) {
 		struct hfs_readdir_data *rd =
 			list_entry(pos, struct hfs_readdir_data, list);
 		if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
 			rd->file->f_pos--;
 	}

 	res = hfs_brec_remove(&fd);
 	if (res)
 		goto out;

 	hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
 	res = hfs_brec_find(&fd);
 	if (!res) {
 		res = hfs_brec_remove(&fd);
 		if (res)
 			goto out;
 	}

 	dir->i_size--;
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(dir);
 	res = 0;
 out:
 	hfs_find_exit(&fd);

 	return res;
 }

 /*
  * hfs_cat_move()
  *
  * Rename a file or directory, possibly to a new directory.
  * If the destination exists it is removed and a
  * (struct hfs_cat_entry) for it is returned in '*result'.
  */
 int hfs_cat_move(u32 cnid, struct inode *src_dir, struct qstr *src_name,
 		 struct inode *dst_dir, struct qstr *dst_name)
 {
 	struct super_block *sb;
 	struct hfs_find_data src_fd, dst_fd;
 	union hfs_cat_rec entry;
 	int entry_size, type;
 	int err;

 	dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
 		dst_dir->i_ino, dst_name->name);
 	sb = src_dir->i_sb;
 	hfs_find_init(HFS_SB(sb)->cat_tree, &src_fd);
 	dst_fd = src_fd;

 	/* find the old dir entry and read the data */
 	hfs_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
 	err = hfs_brec_find(&src_fd);
 	if (err)
 		goto out;

 	hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
 			    src_fd.entrylength);

 	/* create new dir entry with the data from the old entry */
 	hfs_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
 	err = hfs_brec_find(&dst_fd);
 	if (err != -ENOENT) {
 		if (!err)
 			err = -EEXIST;
 		goto out;
 	}

 	err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
 	if (err)
 		goto out;
 	dst_dir->i_size++;
 	dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(dst_dir);

 	/* finally remove the old entry */
 	hfs_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
 	err = hfs_brec_find(&src_fd);
 	if (err)
 		goto out;
 	err = hfs_brec_remove(&src_fd);
 	if (err)
 		goto out;
 	src_dir->i_size--;
 	src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(src_dir);

 	type = entry.type;
 	if (type == HFS_CDR_FIL && !(entry.file.Flags & HFS_FIL_THD))
 		goto out;

 	/* remove old thread entry */
 	hfs_cat_build_key(sb, src_fd.search_key, cnid, NULL);
 	err = hfs_brec_find(&src_fd);
 	if (err)
 		goto out;
 	err = hfs_brec_remove(&src_fd);
 	if (err)
 		goto out;

 	/* create new thread entry */
 	hfs_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
 	entry_size = hfs_cat_build_thread(sb, &entry, type == HFS_CDR_FIL ? HFS_CDR_FTH : HFS_CDR_THD,
 					dst_dir->i_ino, dst_name);
 	err = hfs_brec_find(&dst_fd);
 	if (err != -ENOENT) {
 		if (!err)
 			err = -EEXIST;
 		goto out;
 	}
 	err = hfs_brec_insert(&dst_fd, &entry, entry_size);
 out:
 	hfs_bnode_put(dst_fd.bnode);
 	hfs_find_exit(&src_fd);
 	return err;
 }
	/*
	* linux/fs/hfs/catalog.c
	*
	* Copyright (C) 1995-1997 Paul H. Hargrove
	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	* This file may be distributed under the terms of the GNU General Public License.
	*
	* This file contains the functions related to the catalog B-tree.
	*
	* Cache code shamelessly stolen from
	* linux/fs/inode.c Copyright (C) 1991, 1992 Linus Torvalds
	* re-shamelessly stolen Copyright (C) 1997 Linus Torvalds
	*/

	#include "hfs_fs.h"
	#include "btree.h"

	/*
	* hfs_cat_build_key()
	*
	* Given the ID of the parent and the name build a search key.
	*/
	void hfs_cat_build_key(struct super_block sb, btree_key key, u32 parent, struct qstr *name)
	{
	key->cat.reserved = 0;
	key->cat.ParID = cpu_to_be32(parent);
	if (name) {
	hfs_asc2mac(sb, &key->cat.CName, name);
	key->key_len = 6 + key->cat.CName.len;
	} else {
	memset(&key->cat.CName, 0, sizeof(struct hfs_name));
	key->key_len = 6;
	}
	}

	static int hfs_cat_build_record(hfs_cat_rec rec, u32 cnid, struct inode inode)
	{
	__be32 mtime = hfs_mtime();

	memset(rec, 0, sizeof(*rec));
	if (S_ISDIR(inode->i_mode)) {
	rec->type = HFS_CDR_DIR;
	rec->dir.DirID = cpu_to_be32(cnid);
	rec->dir.CrDat = mtime;
	rec->dir.MdDat = mtime;
	rec->dir.BkDat = 0;
	rec->dir.UsrInfo.frView = cpu_to_be16(0xff);
	return sizeof(struct hfs_cat_dir);
	} else {
	/* init some fields for the file record */
	rec->type = HFS_CDR_FIL;
	rec->file.Flags = HFS_FIL_USED \| HFS_FIL_THD;
	if (!(inode->i_mode & S_IWUSR))
	rec->file.Flags \|= HFS_FIL_LOCK;
	rec->file.FlNum = cpu_to_be32(cnid);
	rec->file.CrDat = mtime;
	rec->file.MdDat = mtime;
	rec->file.BkDat = 0;
	rec->file.UsrWds.fdType = HFS_SB(inode->i_sb)->s_type;
	rec->file.UsrWds.fdCreator = HFS_SB(inode->i_sb)->s_creator;
	return sizeof(struct hfs_cat_file);
	}
	}

	static int hfs_cat_build_thread(struct super_block *sb,
	hfs_cat_rec *rec, int type,
	u32 parentid, struct qstr *name)
	{
	rec->type = type;
	memset(rec->thread.reserved, 0, sizeof(rec->thread.reserved));
	rec->thread.ParID = cpu_to_be32(parentid);
	hfs_asc2mac(sb, &rec->thread.CName, name);
	return sizeof(struct hfs_cat_thread);
	}

	/*
	* create_entry()
	*
	* Add a new file or directory to the catalog B-tree and
	* return a (struct hfs_cat_entry) for it in '*result'.
	*/
	int hfs_cat_create(u32 cnid, struct inode dir, struct qstr str, struct inode *inode)
	{
	struct hfs_find_data fd;
	struct super_block *sb;
	union hfs_cat_rec entry;
	int entry_size;
	int err;

	dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
	if (dir->i_size >= HFS_MAX_VALENCE)
	return -ENOSPC;

	sb = dir->i_sb;
	hfs_find_init(HFS_SB(sb)->cat_tree, &fd);

	hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
	entry_size = hfs_cat_build_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
	HFS_CDR_THD : HFS_CDR_FTH,
	dir->i_ino, str);
	err = hfs_brec_find(&fd);
	if (err != -ENOENT) {
	if (!err)
	err = -EEXIST;
	goto err2;
	}
	err = hfs_brec_insert(&fd, &entry, entry_size);
	if (err)
	goto err2;

	hfs_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	entry_size = hfs_cat_build_record(&entry, cnid, inode);
	err = hfs_brec_find(&fd);
	if (err != -ENOENT) {
	/* panic? */
	if (!err)
	err = -EEXIST;
	goto err1;
	}
	err = hfs_brec_insert(&fd, &entry, entry_size);
	if (err)
	goto err1;

	dir->i_size++;
	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
	mark_inode_dirty(dir);
	hfs_find_exit(&fd);
	return 0;

	err1:
	hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
	if (!hfs_brec_find(&fd))
	hfs_brec_remove(&fd);
	err2:
	hfs_find_exit(&fd);
	return err;
	}

	/*
	* hfs_cat_compare()
	*
	* Description:
	* This is the comparison function used for the catalog B-tree. In
	* comparing catalog B-tree entries, the parent id is the most
	* significant field (compared as unsigned ints). The name field is
	* the least significant (compared in "Macintosh lexical order",
	* see hfs_strcmp() in string.c)
	* Input Variable(s):
	* struct hfs_cat_key *key1: pointer to the first key to compare
	* struct hfs_cat_key *key2: pointer to the second key to compare
	* Output Variable(s):
	* NONE
	* Returns:
	* int: negative if key1<key2, positive if key1>key2, and 0 if key1==key2
	* Preconditions:
	* key1 and key2 point to "valid" (struct hfs_cat_key)s.
	* Postconditions:
	* This function has no side-effects
	*/
	int hfs_cat_keycmp(const btree_key key1, const btree_key key2)
	{
	int retval;

	retval = be32_to_cpu(key1->cat.ParID) - be32_to_cpu(key2->cat.ParID);
	if (!retval)
	retval = hfs_strcmp(key1->cat.CName.name, key1->cat.CName.len,
	key2->cat.CName.name, key2->cat.CName.len);

	return retval;
	}

	/* Try to get a catalog entry for given catalog id */
	// move to read_super???
	int hfs_cat_find_brec(struct super_block *sb, u32 cnid,
	struct hfs_find_data *fd)
	{
	hfs_cat_rec rec;
	int res, len, type;

	hfs_cat_build_key(sb, fd->search_key, cnid, NULL);
	res = hfs_brec_read(fd, &rec, sizeof(rec));
	if (res)
	return res;

	type = rec.type;
	if (type != HFS_CDR_THD && type != HFS_CDR_FTH) {
	printk(KERN_ERR "hfs: found bad thread record in catalog\n");
	return -EIO;
	}

	fd->search_key->cat.ParID = rec.thread.ParID;
	len = fd->search_key->cat.CName.len = rec.thread.CName.len;
	memcpy(fd->search_key->cat.CName.name, rec.thread.CName.name, len);
	return hfs_brec_find(fd);
	}


	/*
	* hfs_cat_delete()
	*
	* Delete the indicated file or directory.
	* The associated thread is also removed unless ('with_thread'==0).
	*/
	int hfs_cat_delete(u32 cnid, struct inode dir, struct qstr str)
	{
	struct super_block *sb;
	struct hfs_find_data fd;
	struct list_head *pos;
	int res, type;

	dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
	sb = dir->i_sb;
	hfs_find_init(HFS_SB(sb)->cat_tree, &fd);

	hfs_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	res = hfs_brec_find(&fd);
	if (res)
	goto out;

	type = hfs_bnode_read_u8(fd.bnode, fd.entryoffset);
	if (type == HFS_CDR_FIL) {
	struct hfs_cat_file file;
	hfs_bnode_read(fd.bnode, &file, fd.entryoffset, sizeof(file));
	if (be32_to_cpu(file.FlNum) == cnid) {
	#if 0
	hfs_free_fork(sb, &file, HFS_FK_DATA);
	#endif
	hfs_free_fork(sb, &file, HFS_FK_RSRC);
	}
	}

	list_for_each(pos, &HFS_I(dir)->open_dir_list) {
	struct hfs_readdir_data *rd =
	list_entry(pos, struct hfs_readdir_data, list);
	if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
	rd->file->f_pos--;
	}

	res = hfs_brec_remove(&fd);
	if (res)
	goto out;

	hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
	res = hfs_brec_find(&fd);
	if (!res) {
	res = hfs_brec_remove(&fd);
	if (res)
	goto out;
	}

	dir->i_size--;
	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
	mark_inode_dirty(dir);
	res = 0;
	out:
	hfs_find_exit(&fd);

	return res;
	}

	/*
	* hfs_cat_move()
	*
	* Rename a file or directory, possibly to a new directory.
	* If the destination exists it is removed and a
	* (struct hfs_cat_entry) for it is returned in '*result'.
	*/
	int hfs_cat_move(u32 cnid, struct inode src_dir, struct qstr src_name,
	struct inode dst_dir, struct qstr dst_name)
	{
	struct super_block *sb;
	struct hfs_find_data src_fd, dst_fd;
	union hfs_cat_rec entry;
	int entry_size, type;
	int err;

	dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
	dst_dir->i_ino, dst_name->name);
	sb = src_dir->i_sb;
	hfs_find_init(HFS_SB(sb)->cat_tree, &src_fd);
	dst_fd = src_fd;

	/* find the old dir entry and read the data */
	hfs_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
	err = hfs_brec_find(&src_fd);
	if (err)
	goto out;

	hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
	src_fd.entrylength);

	/* create new dir entry with the data from the old entry */
	hfs_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
	err = hfs_brec_find(&dst_fd);
	if (err != -ENOENT) {
	if (!err)
	err = -EEXIST;
	goto out;
	}

	err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
	if (err)
	goto out;
	dst_dir->i_size++;
	dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
	mark_inode_dirty(dst_dir);

	/* finally remove the old entry */
	hfs_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
	err = hfs_brec_find(&src_fd);
	if (err)
	goto out;
	err = hfs_brec_remove(&src_fd);
	if (err)
	goto out;
	src_dir->i_size--;
	src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
	mark_inode_dirty(src_dir);

	type = entry.type;
	if (type == HFS_CDR_FIL && !(entry.file.Flags & HFS_FIL_THD))
	goto out;

	/* remove old thread entry */
	hfs_cat_build_key(sb, src_fd.search_key, cnid, NULL);
	err = hfs_brec_find(&src_fd);
	if (err)
	goto out;
	err = hfs_brec_remove(&src_fd);
	if (err)
	goto out;

	/* create new thread entry */
	hfs_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
	entry_size = hfs_cat_build_thread(sb, &entry, type == HFS_CDR_FIL ? HFS_CDR_FTH : HFS_CDR_THD,
	dst_dir->i_ino, dst_name);
	err = hfs_brec_find(&dst_fd);
	if (err != -ENOENT) {
	if (!err)
	err = -EEXIST;
	goto out;
	}
	err = hfs_brec_insert(&dst_fd, &entry, entry_size);
	out:
	hfs_bnode_put(dst_fd.bnode);
	hfs_find_exit(&src_fd);
	return err;
	}