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

 /*
  *  linux/fs/hfsplus/catalog.c
  *
  * Copyright (C) 2001
  * Brad Boyer (flar@allandria.com)
  * (C) 2003 Ardis Technologies <roman@ardistech.com>
  *
  * Handling of catalog records
  */


 #include "hfsplus_fs.h"
 #include "hfsplus_raw.h"

 int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
 			     const hfsplus_btree_key *k2)
 {
 	__be32 k1p, k2p;

 	k1p = k1->cat.parent;
 	k2p = k2->cat.parent;
 	if (k1p != k2p)
 		return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;

 	return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name);
 }

 int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
 			    const hfsplus_btree_key *k2)
 {
 	__be32 k1p, k2p;

 	k1p = k1->cat.parent;
 	k2p = k2->cat.parent;
 	if (k1p != k2p)
 		return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;

 	return hfsplus_strcmp(&k1->cat.name, &k2->cat.name);
 }

 /* Generates key for catalog file/folders record. */
 int hfsplus_cat_build_key(struct super_block *sb,
 		hfsplus_btree_key *key, u32 parent, const struct qstr *str)
 {
 	int len, err;

 	key->cat.parent = cpu_to_be32(parent);
 	err = hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
 			str->name, str->len);
 	if (unlikely(err < 0))
 		return err;

 	len = be16_to_cpu(key->cat.name.length);
 	key->key_len = cpu_to_be16(6 + 2 * len);
 	return 0;
 }

 /* Generates key for catalog thread record. */
 void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
 			hfsplus_btree_key *key, u32 parent)
 {
 	key->cat.parent = cpu_to_be32(parent);
 	key->cat.name.length = 0;
 	key->key_len = cpu_to_be16(6);
 }

 static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
 				      struct hfsplus_unistr *name)
 {
 	int ustrlen;

 	ustrlen = be16_to_cpu(name->length);
 	key->cat.parent = cpu_to_be32(parent);
 	key->cat.name.length = cpu_to_be16(ustrlen);
 	ustrlen *= 2;
 	memcpy(key->cat.name.unicode, name->unicode, ustrlen);
 	key->key_len = cpu_to_be16(6 + ustrlen);
 }

 void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
 {
 	if (inode->i_flags & S_IMMUTABLE)
 		perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
 	else
 		perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
 	if (inode->i_flags & S_APPEND)
 		perms->rootflags |= HFSPLUS_FLG_APPEND;
 	else
 		perms->rootflags &= ~HFSPLUS_FLG_APPEND;

 	perms->userflags = HFSPLUS_I(inode)->userflags;
 	perms->mode = cpu_to_be16(inode->i_mode);
 	perms->owner = cpu_to_be32(i_uid_read(inode));
 	perms->group = cpu_to_be32(i_gid_read(inode));

 	if (S_ISREG(inode->i_mode))
 		perms->dev = cpu_to_be32(inode->i_nlink);
 	else if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode))
 		perms->dev = cpu_to_be32(inode->i_rdev);
 	else
 		perms->dev = 0;
 }

 static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
 		u32 cnid, struct inode *inode)
 {
 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);

 	if (S_ISDIR(inode->i_mode)) {
 		struct hfsplus_cat_folder *folder;

 		folder = &entry->folder;
 		memset(folder, 0, sizeof(*folder));
 		folder->type = cpu_to_be16(HFSPLUS_FOLDER);
 		if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags))
 			folder->flags |= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT);
 		folder->id = cpu_to_be32(inode->i_ino);
 		HFSPLUS_I(inode)->create_date =
 			folder->create_date =
 			folder->content_mod_date =
 			folder->attribute_mod_date =
 			folder->access_date = hfsp_now2mt();
 		hfsplus_cat_set_perms(inode, &folder->permissions);
 		if (inode == sbi->hidden_dir)
 			/* invisible and namelocked */
 			folder->user_info.frFlags = cpu_to_be16(0x5000);
 		return sizeof(*folder);
 	} else {
 		struct hfsplus_cat_file *file;

 		file = &entry->file;
 		memset(file, 0, sizeof(*file));
 		file->type = cpu_to_be16(HFSPLUS_FILE);
 		file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
 		file->id = cpu_to_be32(cnid);
 		HFSPLUS_I(inode)->create_date =
 			file->create_date =
 			file->content_mod_date =
 			file->attribute_mod_date =
 			file->access_date = hfsp_now2mt();
 		if (cnid == inode->i_ino) {
 			hfsplus_cat_set_perms(inode, &file->permissions);
 			if (S_ISLNK(inode->i_mode)) {
 				file->user_info.fdType =
 					cpu_to_be32(HFSP_SYMLINK_TYPE);
 				file->user_info.fdCreator =
 					cpu_to_be32(HFSP_SYMLINK_CREATOR);
 			} else {
 				file->user_info.fdType =
 					cpu_to_be32(sbi->type);
 				file->user_info.fdCreator =
 					cpu_to_be32(sbi->creator);
 			}
 			if (HFSPLUS_FLG_IMMUTABLE &
 					(file->permissions.rootflags |
 					file->permissions.userflags))
 				file->flags |=
 					cpu_to_be16(HFSPLUS_FILE_LOCKED);
 		} else {
 			file->user_info.fdType =
 				cpu_to_be32(HFSP_HARDLINK_TYPE);
 			file->user_info.fdCreator =
 				cpu_to_be32(HFSP_HFSPLUS_CREATOR);
 			file->user_info.fdFlags =
 				cpu_to_be16(0x100);
 			file->create_date =
 				HFSPLUS_I(sbi->hidden_dir)->create_date;
 			file->permissions.dev =
 				cpu_to_be32(HFSPLUS_I(inode)->linkid);
 		}
 		return sizeof(*file);
 	}
 }

 static int hfsplus_fill_cat_thread(struct super_block *sb,
 				   hfsplus_cat_entry *entry, int type,
 				   u32 parentid, const struct qstr *str)
 {
 	int err;

 	entry->type = cpu_to_be16(type);
 	entry->thread.reserved = 0;
 	entry->thread.parentID = cpu_to_be32(parentid);
 	err = hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
 				str->name, str->len);
 	if (unlikely(err < 0))
 		return err;

 	return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
 }

 /* Try to get a catalog entry for given catalog id */
 int hfsplus_find_cat(struct super_block *sb, u32 cnid,
 		     struct hfs_find_data *fd)
 {
 	hfsplus_cat_entry tmp;
 	int err;
 	u16 type;

 	hfsplus_cat_build_key_with_cnid(sb, fd->search_key, cnid);
 	err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
 	if (err)
 		return err;

 	type = be16_to_cpu(tmp.type);
 	if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
 		pr_err("found bad thread record in catalog\n");
 		return -EIO;
 	}

 	if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
 		pr_err("catalog name length corrupted\n");
 		return -EIO;
 	}

 	hfsplus_cat_build_key_uni(fd->search_key,
 		be32_to_cpu(tmp.thread.parentID),
 		&tmp.thread.nodeName);
 	return hfs_brec_find(fd, hfs_find_rec_by_key);
 }

 static void hfsplus_subfolders_inc(struct inode *dir)
 {
 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);

 	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
 		/*
 		 * Increment subfolder count. Note, the value is only meaningful
 		 * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
 		 */
 		HFSPLUS_I(dir)->subfolders++;
 	}
 }

 static void hfsplus_subfolders_dec(struct inode *dir)
 {
 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);

 	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
 		/*
 		 * Decrement subfolder count. Note, the value is only meaningful
 		 * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
 		 *
 		 * Check for zero. Some subfolders may have been created
 		 * by an implementation ignorant of this counter.
 		 */
 		if (HFSPLUS_I(dir)->subfolders)
 			HFSPLUS_I(dir)->subfolders--;
 	}
 }

 int hfsplus_create_cat(u32 cnid, struct inode *dir,
 		const struct qstr *str, struct inode *inode)
 {
 	struct super_block *sb = dir->i_sb;
 	struct hfs_find_data fd;
 	hfsplus_cat_entry entry;
 	int entry_size;
 	int err;

 	hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n",
 		str->name, cnid, inode->i_nlink);
 	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
 	if (err)
 		return err;

 	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
 	entry_size = hfsplus_fill_cat_thread(sb, &entry,
 		S_ISDIR(inode->i_mode) ?
 			HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
 		dir->i_ino, str);
 	if (unlikely(entry_size < 0)) {
 		err = entry_size;
 		goto err2;
 	}

 	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
 	if (err != -ENOENT) {
 		if (!err)
 			err = -EEXIST;
 		goto err2;
 	}
 	err = hfs_brec_insert(&fd, &entry, entry_size);
 	if (err)
 		goto err2;

 	err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
 	if (unlikely(err))
 		goto err1;

 	entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
 	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
 	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++;
 	if (S_ISDIR(inode->i_mode))
 		hfsplus_subfolders_inc(dir);
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);

 	hfs_find_exit(&fd);
 	return 0;

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

 int hfsplus_delete_cat(u32 cnid, struct inode *dir, const struct qstr *str)
 {
 	struct super_block *sb = dir->i_sb;
 	struct hfs_find_data fd;
 	struct hfsplus_fork_raw fork;
 	struct list_head *pos;
 	int err, off;
 	u16 type;

 	hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
 	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
 	if (err)
 		return err;

 	if (!str) {
 		int len;

 		hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
 		err = hfs_brec_find(&fd, hfs_find_rec_by_key);
 		if (err)
 			goto out;

 		off = fd.entryoffset +
 			offsetof(struct hfsplus_cat_thread, nodeName);
 		fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
 		hfs_bnode_read(fd.bnode,
 			&fd.search_key->cat.name.length, off, 2);
 		len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
 		hfs_bnode_read(fd.bnode,
 			&fd.search_key->cat.name.unicode,
 			off + 2, len);
 		fd.search_key->key_len = cpu_to_be16(6 + len);
 	} else {
 		err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
 		if (unlikely(err))
 			goto out;
 	}

 	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
 	if (err)
 		goto out;

 	type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
 	if (type == HFSPLUS_FILE) {
 #if 0
 		off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
 		hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
 		hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
 #endif

 		off = fd.entryoffset +
 			offsetof(struct hfsplus_cat_file, rsrc_fork);
 		hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
 		hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
 	}

 	/* we only need to take spinlock for exclusion with ->release() */
 	spin_lock(&HFSPLUS_I(dir)->open_dir_lock);
 	list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
 		struct hfsplus_readdir_data *rd =
 			list_entry(pos, struct hfsplus_readdir_data, list);
 		if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
 			rd->file->f_pos--;
 	}
 	spin_unlock(&HFSPLUS_I(dir)->open_dir_lock);

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

 	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
 	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
 	if (err)
 		goto out;

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

 	dir->i_size--;
 	if (type == HFSPLUS_FOLDER)
 		hfsplus_subfolders_dec(dir);
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);

 	if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) {
 		if (HFSPLUS_SB(sb)->attr_tree)
 			hfsplus_delete_all_attrs(dir, cnid);
 	}

 out:
 	hfs_find_exit(&fd);

 	return err;
 }

 int hfsplus_rename_cat(u32 cnid,
 		       struct inode *src_dir, const struct qstr *src_name,
 		       struct inode *dst_dir, const struct qstr *dst_name)
 {
 	struct super_block *sb = src_dir->i_sb;
 	struct hfs_find_data src_fd, dst_fd;
 	hfsplus_cat_entry entry;
 	int entry_size, type;
 	int err;

 	hfs_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);
 	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
 	if (err)
 		return err;
 	dst_fd = src_fd;

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

 	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
 	if (err)
 		goto out;
 	if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) {
 		err = -EIO;
 		goto out;
 	}

 	hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
 				src_fd.entrylength);
 	type = be16_to_cpu(entry.type);

 	/* create new dir entry with the data from the old entry */
 	err = hfsplus_cat_build_key(sb, dst_fd.search_key,
 			dst_dir->i_ino, dst_name);
 	if (unlikely(err))
 		goto out;

 	err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
 	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++;
 	if (type == HFSPLUS_FOLDER)
 		hfsplus_subfolders_inc(dst_dir);
 	dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;

 	/* finally remove the old entry */
 	err = hfsplus_cat_build_key(sb, src_fd.search_key,
 			src_dir->i_ino, src_name);
 	if (unlikely(err))
 		goto out;

 	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
 	if (err)
 		goto out;
 	err = hfs_brec_remove(&src_fd);
 	if (err)
 		goto out;
 	src_dir->i_size--;
 	if (type == HFSPLUS_FOLDER)
 		hfsplus_subfolders_dec(src_dir);
 	src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;

 	/* remove old thread entry */
 	hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid);
 	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
 	if (err)
 		goto out;
 	type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
 	err = hfs_brec_remove(&src_fd);
 	if (err)
 		goto out;

 	/* create new thread entry */
 	hfsplus_cat_build_key_with_cnid(sb, dst_fd.search_key, cnid);
 	entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
 		dst_dir->i_ino, dst_name);
 	if (unlikely(entry_size < 0)) {
 		err = entry_size;
 		goto out;
 	}

 	err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
 	if (err != -ENOENT) {
 		if (!err)
 			err = -EEXIST;
 		goto out;
 	}
 	err = hfs_brec_insert(&dst_fd, &entry, entry_size);

 	hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
 	hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
 out:
 	hfs_bnode_put(dst_fd.bnode);
 	hfs_find_exit(&src_fd);
 	return err;
 }
	/*
	* linux/fs/hfsplus/catalog.c
	*
	* Copyright (C) 2001
	* Brad Boyer (flar@allandria.com)
	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	*
	* Handling of catalog records
	*/


	#include "hfsplus_fs.h"
	#include "hfsplus_raw.h"

	int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
	const hfsplus_btree_key *k2)
	{
	__be32 k1p, k2p;

	k1p = k1->cat.parent;
	k2p = k2->cat.parent;
	if (k1p != k2p)
	return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;

	return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name);
	}

	int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
	const hfsplus_btree_key *k2)
	{
	__be32 k1p, k2p;

	k1p = k1->cat.parent;
	k2p = k2->cat.parent;
	if (k1p != k2p)
	return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;

	return hfsplus_strcmp(&k1->cat.name, &k2->cat.name);
	}

	/* Generates key for catalog file/folders record. */
	int hfsplus_cat_build_key(struct super_block *sb,
	hfsplus_btree_key key, u32 parent, const struct qstr str)
	{
	int len, err;

	key->cat.parent = cpu_to_be32(parent);
	err = hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
	str->name, str->len);
	if (unlikely(err < 0))
	return err;

	len = be16_to_cpu(key->cat.name.length);
	key->key_len = cpu_to_be16(6 + 2 * len);
	return 0;
	}

	/* Generates key for catalog thread record. */
	void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
	hfsplus_btree_key *key, u32 parent)
	{
	key->cat.parent = cpu_to_be32(parent);
	key->cat.name.length = 0;
	key->key_len = cpu_to_be16(6);
	}

	static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
	struct hfsplus_unistr *name)
	{
	int ustrlen;

	ustrlen = be16_to_cpu(name->length);
	key->cat.parent = cpu_to_be32(parent);
	key->cat.name.length = cpu_to_be16(ustrlen);
	ustrlen *= 2;
	memcpy(key->cat.name.unicode, name->unicode, ustrlen);
	key->key_len = cpu_to_be16(6 + ustrlen);
	}

	void hfsplus_cat_set_perms(struct inode inode, struct hfsplus_perm perms)
	{
	if (inode->i_flags & S_IMMUTABLE)
	perms->rootflags \|= HFSPLUS_FLG_IMMUTABLE;
	else
	perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
	if (inode->i_flags & S_APPEND)
	perms->rootflags \|= HFSPLUS_FLG_APPEND;
	else
	perms->rootflags &= ~HFSPLUS_FLG_APPEND;

	perms->userflags = HFSPLUS_I(inode)->userflags;
	perms->mode = cpu_to_be16(inode->i_mode);
	perms->owner = cpu_to_be32(i_uid_read(inode));
	perms->group = cpu_to_be32(i_gid_read(inode));

	if (S_ISREG(inode->i_mode))
	perms->dev = cpu_to_be32(inode->i_nlink);
	else if (S_ISBLK(inode->i_mode) \|\| S_ISCHR(inode->i_mode))
	perms->dev = cpu_to_be32(inode->i_rdev);
	else
	perms->dev = 0;
	}

	static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
	u32 cnid, struct inode *inode)
	{
	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);

	if (S_ISDIR(inode->i_mode)) {
	struct hfsplus_cat_folder *folder;

	folder = &entry->folder;
	memset(folder, 0, sizeof(*folder));
	folder->type = cpu_to_be16(HFSPLUS_FOLDER);
	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags))
	folder->flags \|= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT);
	folder->id = cpu_to_be32(inode->i_ino);
	HFSPLUS_I(inode)->create_date =
	folder->create_date =
	folder->content_mod_date =
	folder->attribute_mod_date =
	folder->access_date = hfsp_now2mt();
	hfsplus_cat_set_perms(inode, &folder->permissions);
	if (inode == sbi->hidden_dir)
	/* invisible and namelocked */
	folder->user_info.frFlags = cpu_to_be16(0x5000);
	return sizeof(*folder);
	} else {
	struct hfsplus_cat_file *file;

	file = &entry->file;
	memset(file, 0, sizeof(*file));
	file->type = cpu_to_be16(HFSPLUS_FILE);
	file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
	file->id = cpu_to_be32(cnid);
	HFSPLUS_I(inode)->create_date =
	file->create_date =
	file->content_mod_date =
	file->attribute_mod_date =
	file->access_date = hfsp_now2mt();
	if (cnid == inode->i_ino) {
	hfsplus_cat_set_perms(inode, &file->permissions);
	if (S_ISLNK(inode->i_mode)) {
	file->user_info.fdType =
	cpu_to_be32(HFSP_SYMLINK_TYPE);
	file->user_info.fdCreator =
	cpu_to_be32(HFSP_SYMLINK_CREATOR);
	} else {
	file->user_info.fdType =
	cpu_to_be32(sbi->type);
	file->user_info.fdCreator =
	cpu_to_be32(sbi->creator);
	}
	if (HFSPLUS_FLG_IMMUTABLE &
	(file->permissions.rootflags \|
	file->permissions.userflags))
	file->flags \|=
	cpu_to_be16(HFSPLUS_FILE_LOCKED);
	} else {
	file->user_info.fdType =
	cpu_to_be32(HFSP_HARDLINK_TYPE);
	file->user_info.fdCreator =
	cpu_to_be32(HFSP_HFSPLUS_CREATOR);
	file->user_info.fdFlags =
	cpu_to_be16(0x100);
	file->create_date =
	HFSPLUS_I(sbi->hidden_dir)->create_date;
	file->permissions.dev =
	cpu_to_be32(HFSPLUS_I(inode)->linkid);
	}
	return sizeof(*file);
	}
	}

	static int hfsplus_fill_cat_thread(struct super_block *sb,
	hfsplus_cat_entry *entry, int type,
	u32 parentid, const struct qstr *str)
	{
	int err;

	entry->type = cpu_to_be16(type);
	entry->thread.reserved = 0;
	entry->thread.parentID = cpu_to_be32(parentid);
	err = hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
	str->name, str->len);
	if (unlikely(err < 0))
	return err;

	return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
	}

	/* Try to get a catalog entry for given catalog id */
	int hfsplus_find_cat(struct super_block *sb, u32 cnid,
	struct hfs_find_data *fd)
	{
	hfsplus_cat_entry tmp;
	int err;
	u16 type;

	hfsplus_cat_build_key_with_cnid(sb, fd->search_key, cnid);
	err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
	if (err)
	return err;

	type = be16_to_cpu(tmp.type);
	if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
	pr_err("found bad thread record in catalog\n");
	return -EIO;
	}

	if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
	pr_err("catalog name length corrupted\n");
	return -EIO;
	}

	hfsplus_cat_build_key_uni(fd->search_key,
	be32_to_cpu(tmp.thread.parentID),
	&tmp.thread.nodeName);
	return hfs_brec_find(fd, hfs_find_rec_by_key);
	}

	static void hfsplus_subfolders_inc(struct inode *dir)
	{
	struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);

	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
	/*
	* Increment subfolder count. Note, the value is only meaningful
	* for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
	*/
	HFSPLUS_I(dir)->subfolders++;
	}
	}

	static void hfsplus_subfolders_dec(struct inode *dir)
	{
	struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);

	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
	/*
	* Decrement subfolder count. Note, the value is only meaningful
	* for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
	*
	* Check for zero. Some subfolders may have been created
	* by an implementation ignorant of this counter.
	*/
	if (HFSPLUS_I(dir)->subfolders)
	HFSPLUS_I(dir)->subfolders--;
	}
	}

	int hfsplus_create_cat(u32 cnid, struct inode *dir,
	const struct qstr str, struct inode inode)
	{
	struct super_block *sb = dir->i_sb;
	struct hfs_find_data fd;
	hfsplus_cat_entry entry;
	int entry_size;
	int err;

	hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n",
	str->name, cnid, inode->i_nlink);
	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
	if (err)
	return err;

	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
	entry_size = hfsplus_fill_cat_thread(sb, &entry,
	S_ISDIR(inode->i_mode) ?
	HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
	dir->i_ino, str);
	if (unlikely(entry_size < 0)) {
	err = entry_size;
	goto err2;
	}

	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
	if (err != -ENOENT) {
	if (!err)
	err = -EEXIST;
	goto err2;
	}
	err = hfs_brec_insert(&fd, &entry, entry_size);
	if (err)
	goto err2;

	err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	if (unlikely(err))
	goto err1;

	entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
	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++;
	if (S_ISDIR(inode->i_mode))
	hfsplus_subfolders_inc(dir);
	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);

	hfs_find_exit(&fd);
	return 0;

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

	int hfsplus_delete_cat(u32 cnid, struct inode dir, const struct qstr str)
	{
	struct super_block *sb = dir->i_sb;
	struct hfs_find_data fd;
	struct hfsplus_fork_raw fork;
	struct list_head *pos;
	int err, off;
	u16 type;

	hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
	if (err)
	return err;

	if (!str) {
	int len;

	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
	if (err)
	goto out;

	off = fd.entryoffset +
	offsetof(struct hfsplus_cat_thread, nodeName);
	fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
	hfs_bnode_read(fd.bnode,
	&fd.search_key->cat.name.length, off, 2);
	len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
	hfs_bnode_read(fd.bnode,
	&fd.search_key->cat.name.unicode,
	off + 2, len);
	fd.search_key->key_len = cpu_to_be16(6 + len);
	} else {
	err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	if (unlikely(err))
	goto out;
	}

	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
	if (err)
	goto out;

	type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
	if (type == HFSPLUS_FILE) {
	#if 0
	off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
	hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
	hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
	#endif

	off = fd.entryoffset +
	offsetof(struct hfsplus_cat_file, rsrc_fork);
	hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
	hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
	}

	/* we only need to take spinlock for exclusion with ->release() */
	spin_lock(&HFSPLUS_I(dir)->open_dir_lock);
	list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
	struct hfsplus_readdir_data *rd =
	list_entry(pos, struct hfsplus_readdir_data, list);
	if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
	rd->file->f_pos--;
	}
	spin_unlock(&HFSPLUS_I(dir)->open_dir_lock);

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

	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
	if (err)
	goto out;

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

	dir->i_size--;
	if (type == HFSPLUS_FOLDER)
	hfsplus_subfolders_dec(dir);
	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);

	if (type == HFSPLUS_FILE \|\| type == HFSPLUS_FOLDER) {
	if (HFSPLUS_SB(sb)->attr_tree)
	hfsplus_delete_all_attrs(dir, cnid);
	}

	out:
	hfs_find_exit(&fd);

	return err;
	}

	int hfsplus_rename_cat(u32 cnid,
	struct inode src_dir, const struct qstr src_name,
	struct inode dst_dir, const struct qstr dst_name)
	{
	struct super_block *sb = src_dir->i_sb;
	struct hfs_find_data src_fd, dst_fd;
	hfsplus_cat_entry entry;
	int entry_size, type;
	int err;

	hfs_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);
	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
	if (err)
	return err;
	dst_fd = src_fd;

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

	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
	if (err)
	goto out;
	if (src_fd.entrylength > sizeof(entry) \|\| src_fd.entrylength < 0) {
	err = -EIO;
	goto out;
	}

	hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
	src_fd.entrylength);
	type = be16_to_cpu(entry.type);

	/* create new dir entry with the data from the old entry */
	err = hfsplus_cat_build_key(sb, dst_fd.search_key,
	dst_dir->i_ino, dst_name);
	if (unlikely(err))
	goto out;

	err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
	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++;
	if (type == HFSPLUS_FOLDER)
	hfsplus_subfolders_inc(dst_dir);
	dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;

	/* finally remove the old entry */
	err = hfsplus_cat_build_key(sb, src_fd.search_key,
	src_dir->i_ino, src_name);
	if (unlikely(err))
	goto out;

	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
	if (err)
	goto out;
	err = hfs_brec_remove(&src_fd);
	if (err)
	goto out;
	src_dir->i_size--;
	if (type == HFSPLUS_FOLDER)
	hfsplus_subfolders_dec(src_dir);
	src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;

	/* remove old thread entry */
	hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid);
	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
	if (err)
	goto out;
	type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
	err = hfs_brec_remove(&src_fd);
	if (err)
	goto out;

	/* create new thread entry */
	hfsplus_cat_build_key_with_cnid(sb, dst_fd.search_key, cnid);
	entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
	dst_dir->i_ino, dst_name);
	if (unlikely(entry_size < 0)) {
	err = entry_size;
	goto out;
	}

	err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
	if (err != -ENOENT) {
	if (!err)
	err = -EEXIST;
	goto out;
	}
	err = hfs_brec_insert(&dst_fd, &entry, entry_size);

	hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
	hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
	out:
	hfs_bnode_put(dst_fd.bnode);
	hfs_find_exit(&src_fd);
	return err;
	}