[net-next-2.6.git] / fs / hfsplus / catalog.c

/*
 *  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);
}

void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
			   u32 parent, struct qstr *str)
{
	int len;

	key->cat.parent = cpu_to_be32(parent);
	if (str) {
		hfsplus_asc2uni(sb, &key->cat.name, str->name, str->len);
		len = be16_to_cpu(key->cat.name.length);
	} else {
		key->cat.name.length = 0;
		len = 0;
	}
	key->key_len = cpu_to_be16(6 + 2 * len);
}

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(inode->i_uid);
	perms->group = cpu_to_be32(inode->i_gid);

	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);
		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 ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
				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, struct qstr *str)
{
	entry->type = cpu_to_be16(type);
	entry->thread.reserved = 0;
	entry->thread.parentID = cpu_to_be32(parentid);
	hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len);
	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(sb, fd->search_key, cnid, NULL);
	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) {
		printk(KERN_ERR "hfs: found bad thread record in catalog\n");
		return -EIO;
	}

	if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
		printk(KERN_ERR "hfs: 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);
}

int hfsplus_create_cat(u32 cnid, struct inode *dir, 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;

	dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);

	hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
	entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
			HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
			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;

	hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	entry_size = hfsplus_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:
	hfsplus_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;
}

int hfsplus_delete_cat(u32 cnid, struct inode *dir, 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;

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

	if (!str) {
		int len;

		hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
		err = hfs_brec_find(&fd);
		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
		hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);

	err = hfs_brec_find(&fd);
	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);
	}

	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--;
	}

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

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

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

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

	return err;
}

int hfsplus_rename_cat(u32 cnid,
		       struct inode *src_dir, struct qstr *src_name,
		       struct inode *dst_dir, 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 = 0;

	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);
	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
	dst_fd = src_fd;

	/* find the old dir entry and read the data */
	hfsplus_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 */
	hfsplus_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 */
	hfsplus_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);

	/* remove old thread entry */
	hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
	err = hfs_brec_find(&src_fd);
	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(sb, dst_fd.search_key, cnid, NULL);
	entry_size = hfsplus_fill_cat_thread(sb, &entry, type, 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;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/hfsplus/catalog.c
	3	*
	4	* Copyright (C) 2001
	5	* Brad Boyer (flar@allandria.com)
	6	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	7	*
	8	* Handling of catalog records
	9	*/
	10
1da177e4 LT	11
	12	#include "hfsplus_fs.h"
	13	#include "hfsplus_raw.h"
	14
2179d372 DE	15	int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
2179d372 DE	16	const hfsplus_btree_key *k2)
1da177e4 LT	17	{
	18	__be32 k1p, k2p;
	19
	20	k1p = k1->cat.parent;
	21	k2p = k2->cat.parent;
	22	if (k1p != k2p)
	23	return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;
	24
2179d372 DE	25	return hfsplus_strcasecmp(&k1->cat.name, &k2->cat.name);
	26	}
	27
	28	int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
	29	const hfsplus_btree_key *k2)
	30	{
	31	__be32 k1p, k2p;
	32
	33	k1p = k1->cat.parent;
	34	k2p = k2->cat.parent;
	35	if (k1p != k2p)
	36	return be32_to_cpu(k1p) < be32_to_cpu(k2p) ? -1 : 1;
	37
	38	return hfsplus_strcmp(&k1->cat.name, &k2->cat.name);
1da177e4 LT	39	}
	40
	41	void hfsplus_cat_build_key(struct super_block sb, hfsplus_btree_key key,
	42	u32 parent, struct qstr *str)
	43	{
	44	int len;
	45
	46	key->cat.parent = cpu_to_be32(parent);
	47	if (str) {
	48	hfsplus_asc2uni(sb, &key->cat.name, str->name, str->len);
	49	len = be16_to_cpu(key->cat.name.length);
	50	} else {
	51	key->cat.name.length = 0;
	52	len = 0;
	53	}
	54	key->key_len = cpu_to_be16(6 + 2 * len);
	55	}
	56
	57	static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
	58	struct hfsplus_unistr *name)
	59	{
	60	int ustrlen;
	61
	62	ustrlen = be16_to_cpu(name->length);
	63	key->cat.parent = cpu_to_be32(parent);
	64	key->cat.name.length = cpu_to_be16(ustrlen);
	65	ustrlen *= 2;
	66	memcpy(key->cat.name.unicode, name->unicode, ustrlen);
	67	key->key_len = cpu_to_be16(6 + ustrlen);
	68	}
	69
90e61690	70	void hfsplus_cat_set_perms(struct inode inode, struct hfsplus_perm perms)
1da177e4 LT	71	{
	72	if (inode->i_flags & S_IMMUTABLE)
	73	perms->rootflags \|= HFSPLUS_FLG_IMMUTABLE;
	74	else
	75	perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
	76	if (inode->i_flags & S_APPEND)
	77	perms->rootflags \|= HFSPLUS_FLG_APPEND;
	78	else
	79	perms->rootflags &= ~HFSPLUS_FLG_APPEND;
90e61690 CH	80
90e61690 CH	81	perms->userflags = HFSPLUS_I(inode)->userflags;
1da177e4 LT	82	perms->mode = cpu_to_be16(inode->i_mode);
	83	perms->owner = cpu_to_be32(inode->i_uid);
	84	perms->group = cpu_to_be32(inode->i_gid);
90e61690 CH	85
	86	if (S_ISREG(inode->i_mode))
	87	perms->dev = cpu_to_be32(inode->i_nlink);
	88	else if (S_ISBLK(inode->i_mode) \|\| S_ISCHR(inode->i_mode))
	89	perms->dev = cpu_to_be32(inode->i_rdev);
	90	else
	91	perms->dev = 0;
1da177e4 LT	92	}
	93
	94	static int hfsplus_cat_build_record(hfsplus_cat_entry entry, u32 cnid, struct inode inode)
	95	{
dd73a01a CH	96	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
dd73a01a CH	97
1da177e4 LT	98	if (S_ISDIR(inode->i_mode)) {
	99	struct hfsplus_cat_folder *folder;
	100
	101	folder = &entry->folder;
	102	memset(folder, 0, sizeof(*folder));
	103	folder->type = cpu_to_be16(HFSPLUS_FOLDER);
	104	folder->id = cpu_to_be32(inode->i_ino);
6af502de	105	HFSPLUS_I(inode)->create_date =
9a4cad95 RZ	106	folder->create_date =
	107	folder->content_mod_date =
	108	folder->attribute_mod_date =
	109	folder->access_date = hfsp_now2mt();
90e61690	110	hfsplus_cat_set_perms(inode, &folder->permissions);
dd73a01a	111	if (inode == sbi->hidden_dir)
1da177e4 LT	112	/* invisible and namelocked */
	113	folder->user_info.frFlags = cpu_to_be16(0x5000);
	114	return sizeof(*folder);
	115	} else {
	116	struct hfsplus_cat_file *file;
	117
	118	file = &entry->file;
	119	memset(file, 0, sizeof(*file));
	120	file->type = cpu_to_be16(HFSPLUS_FILE);
	121	file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
	122	file->id = cpu_to_be32(cnid);
6af502de	123	HFSPLUS_I(inode)->create_date =
9a4cad95 RZ	124	file->create_date =
	125	file->content_mod_date =
	126	file->attribute_mod_date =
	127	file->access_date = hfsp_now2mt();
1da177e4	128	if (cnid == inode->i_ino) {
90e61690	129	hfsplus_cat_set_perms(inode, &file->permissions);
6b192832 RZ	130	if (S_ISLNK(inode->i_mode)) {
	131	file->user_info.fdType = cpu_to_be32(HFSP_SYMLINK_TYPE);
	132	file->user_info.fdCreator = cpu_to_be32(HFSP_SYMLINK_CREATOR);
	133	} else {
dd73a01a CH	134	file->user_info.fdType = cpu_to_be32(sbi->type);
dd73a01a CH	135	file->user_info.fdCreator = cpu_to_be32(sbi->creator);
6b192832	136	}
1da177e4 LT	137	if ((file->permissions.rootflags \| file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
	138	file->flags \|= cpu_to_be16(HFSPLUS_FILE_LOCKED);
	139	} else {
	140	file->user_info.fdType = cpu_to_be32(HFSP_HARDLINK_TYPE);
	141	file->user_info.fdCreator = cpu_to_be32(HFSP_HFSPLUS_CREATOR);
	142	file->user_info.fdFlags = cpu_to_be16(0x100);
6af502de	143	file->create_date = HFSPLUS_I(sbi->hidden_dir)->create_date;
f6089ff8	144	file->permissions.dev = cpu_to_be32(HFSPLUS_I(inode)->linkid);
1da177e4 LT	145	}
	146	return sizeof(*file);
	147	}
	148	}
	149
	150	static int hfsplus_fill_cat_thread(struct super_block *sb,
	151	hfsplus_cat_entry *entry, int type,
	152	u32 parentid, struct qstr *str)
	153	{
	154	entry->type = cpu_to_be16(type);
	155	entry->thread.reserved = 0;
	156	entry->thread.parentID = cpu_to_be32(parentid);
	157	hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len);
	158	return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
	159	}
	160
	161	/* Try to get a catalog entry for given catalog id */
	162	int hfsplus_find_cat(struct super_block *sb, u32 cnid,
	163	struct hfs_find_data *fd)
	164	{
	165	hfsplus_cat_entry tmp;
	166	int err;
	167	u16 type;
	168
	169	hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
	170	err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
	171	if (err)
	172	return err;
	173
	174	type = be16_to_cpu(tmp.type);
	175	if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
634725a9	176	printk(KERN_ERR "hfs: found bad thread record in catalog\n");
1da177e4 LT	177	return -EIO;
	178	}
	179
efc7ffcb ES	180	if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
	181	printk(KERN_ERR "hfs: catalog name length corrupted\n");
	182	return -EIO;
	183	}
	184
1da177e4 LT	185	hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID),
	186	&tmp.thread.nodeName);
	187	return hfs_brec_find(fd);
	188	}
	189
	190	int hfsplus_create_cat(u32 cnid, struct inode dir, struct qstr str, struct inode *inode)
	191	{
dd73a01a	192	struct super_block *sb = dir->i_sb;
1da177e4	193	struct hfs_find_data fd;
1da177e4 LT	194	hfsplus_cat_entry entry;
	195	int entry_size;
	196	int err;
	197
	198	dprint(DBG_CAT_MOD, "create_cat: %s,%u(%d)\n", str->name, cnid, inode->i_nlink);
dd73a01a	199	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
1da177e4 LT	200
	201	hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
	202	entry_size = hfsplus_fill_cat_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
	203	HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
	204	dir->i_ino, str);
	205	err = hfs_brec_find(&fd);
	206	if (err != -ENOENT) {
	207	if (!err)
	208	err = -EEXIST;
	209	goto err2;
	210	}
	211	err = hfs_brec_insert(&fd, &entry, entry_size);
	212	if (err)
	213	goto err2;
	214
	215	hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	216	entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
	217	err = hfs_brec_find(&fd);
	218	if (err != -ENOENT) {
	219	/* panic? */
	220	if (!err)
	221	err = -EEXIST;
	222	goto err1;
	223	}
	224	err = hfs_brec_insert(&fd, &entry, entry_size);
	225	if (err)
	226	goto err1;
	227
	228	dir->i_size++;
	229	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
	230	mark_inode_dirty(dir);
	231	hfs_find_exit(&fd);
	232	return 0;
	233
	234	err1:
	235	hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
	236	if (!hfs_brec_find(&fd))
	237	hfs_brec_remove(&fd);
	238	err2:
	239	hfs_find_exit(&fd);
	240	return err;
	241	}
	242
	243	int hfsplus_delete_cat(u32 cnid, struct inode dir, struct qstr str)
	244	{
dd73a01a	245	struct super_block *sb = dir->i_sb;
1da177e4 LT	246	struct hfs_find_data fd;
	247	struct hfsplus_fork_raw fork;
	248	struct list_head *pos;
	249	int err, off;
	250	u16 type;
	251
	252	dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
dd73a01a	253	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
1da177e4 LT	254
	255	if (!str) {
	256	int len;
	257
	258	hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
	259	err = hfs_brec_find(&fd);
	260	if (err)
	261	goto out;
	262
	263	off = fd.entryoffset + offsetof(struct hfsplus_cat_thread, nodeName);
	264	fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
	265	hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.length, off, 2);
	266	len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
	267	hfs_bnode_read(fd.bnode, &fd.search_key->cat.name.unicode, off + 2, len);
	268	fd.search_key->key_len = cpu_to_be16(6 + len);
	269	} else
	270	hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	271
	272	err = hfs_brec_find(&fd);
	273	if (err)
	274	goto out;
	275
	276	type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
	277	if (type == HFSPLUS_FILE) {
	278	#if 0
	279	off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
	280	hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
	281	hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
	282	#endif
	283
	284	off = fd.entryoffset + offsetof(struct hfsplus_cat_file, rsrc_fork);
	285	hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
	286	hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
	287	}
	288
6af502de	289	list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
1da177e4 LT	290	struct hfsplus_readdir_data *rd =
	291	list_entry(pos, struct hfsplus_readdir_data, list);
	292	if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
	293	rd->file->f_pos--;
	294	}
	295
	296	err = hfs_brec_remove(&fd);
	297	if (err)
	298	goto out;
	299
	300	hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
	301	err = hfs_brec_find(&fd);
	302	if (err)
	303	goto out;
	304
	305	err = hfs_brec_remove(&fd);
	306	if (err)
	307	goto out;
	308
	309	dir->i_size--;
	310	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
	311	mark_inode_dirty(dir);
	312	out:
	313	hfs_find_exit(&fd);
	314
	315	return err;
	316	}
	317
	318	int hfsplus_rename_cat(u32 cnid,
	319	struct inode src_dir, struct qstr src_name,
	320	struct inode dst_dir, struct qstr dst_name)
	321	{
dd73a01a	322	struct super_block *sb = src_dir->i_sb;
1da177e4 LT	323	struct hfs_find_data src_fd, dst_fd;
	324	hfsplus_cat_entry entry;
	325	int entry_size, type;
	326	int err = 0;
	327
	328	dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, src_dir->i_ino, src_name->name,
	329	dst_dir->i_ino, dst_name->name);
dd73a01a	330	hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
1da177e4 LT	331	dst_fd = src_fd;
	332
	333	/* find the old dir entry and read the data */
	334	hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
	335	err = hfs_brec_find(&src_fd);
	336	if (err)
	337	goto out;
	338
	339	hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
	340	src_fd.entrylength);
	341
	342	/* create new dir entry with the data from the old entry */
	343	hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
	344	err = hfs_brec_find(&dst_fd);
	345	if (err != -ENOENT) {
	346	if (!err)
	347	err = -EEXIST;
	348	goto out;
	349	}
	350
	351	err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
	352	if (err)
	353	goto out;
	354	dst_dir->i_size++;
	355	dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
	356	mark_inode_dirty(dst_dir);
	357
	358	/* finally remove the old entry */
	359	hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
	360	err = hfs_brec_find(&src_fd);
	361	if (err)
	362	goto out;
	363	err = hfs_brec_remove(&src_fd);
	364	if (err)
	365	goto out;
	366	src_dir->i_size--;
	367	src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
	368	mark_inode_dirty(src_dir);
	369
	370	/* remove old thread entry */
	371	hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
	372	err = hfs_brec_find(&src_fd);
	373	if (err)
	374	goto out;
	375	type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
	376	err = hfs_brec_remove(&src_fd);
	377	if (err)
	378	goto out;
	379
	380	/* create new thread entry */
	381	hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
	382	entry_size = hfsplus_fill_cat_thread(sb, &entry, type, dst_dir->i_ino, dst_name);
	383	err = hfs_brec_find(&dst_fd);
	384	if (err != -ENOENT) {
	385	if (!err)
	386	err = -EEXIST;
	387	goto out;
	388	}
	389	err = hfs_brec_insert(&dst_fd, &entry, entry_size);
	390	out:
	391	hfs_bnode_put(dst_fd.bnode);
	392	hfs_find_exit(&src_fd);
	393	return err;
	394	}