[linux.git] / fs / hfsplus / catalog.c

/*
 *  linux/fs/hfsplus/catalog.c
 *
 * Copyright (C) 2001
 * Brad Boyer ([email protected])
 * (C) 2003 Ardis Technologies <[email protected]>
 *
 * 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, 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, 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,
		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, 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, 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;

	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;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/hfsplus/catalog.c
	3	*
	4	* Copyright (C) 2001
	5	* Brad Boyer ([email protected])
	6	* (C) 2003 Ardis Technologies <[email protected]>
	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	}
1da177e4 LT	40
89ac9b4d SS	41	/* Generates key for catalog file/folders record. */
	42	int hfsplus_cat_build_key(struct super_block *sb,
	43	hfsplus_btree_key key, u32 parent, struct qstr str)
1da177e4	44	{
89ac9b4d	45	int len, err;
1da177e4 LT	46
1da177e4 LT	47	key->cat.parent = cpu_to_be32(parent);
89ac9b4d SS	48	err = hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
	49	str->name, str->len);
	50	if (unlikely(err < 0))
	51	return err;
	52
	53	len = be16_to_cpu(key->cat.name.length);
1da177e4	54	key->key_len = cpu_to_be16(6 + 2 * len);
89ac9b4d SS	55	return 0;
	56	}
	57
	58	/* Generates key for catalog thread record. */
	59	void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
	60	hfsplus_btree_key *key, u32 parent)
	61	{
	62	key->cat.parent = cpu_to_be32(parent);
	63	key->cat.name.length = 0;
	64	key->key_len = cpu_to_be16(6);
1da177e4 LT	65	}
	66
	67	static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
	68	struct hfsplus_unistr *name)
	69	{
	70	int ustrlen;
	71
	72	ustrlen = be16_to_cpu(name->length);
	73	key->cat.parent = cpu_to_be32(parent);
	74	key->cat.name.length = cpu_to_be16(ustrlen);
	75	ustrlen *= 2;
	76	memcpy(key->cat.name.unicode, name->unicode, ustrlen);
	77	key->key_len = cpu_to_be16(6 + ustrlen);
	78	}
	79
90e61690	80	void hfsplus_cat_set_perms(struct inode inode, struct hfsplus_perm perms)
1da177e4 LT	81	{
	82	if (inode->i_flags & S_IMMUTABLE)
	83	perms->rootflags \|= HFSPLUS_FLG_IMMUTABLE;
	84	else
	85	perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
	86	if (inode->i_flags & S_APPEND)
	87	perms->rootflags \|= HFSPLUS_FLG_APPEND;
	88	else
	89	perms->rootflags &= ~HFSPLUS_FLG_APPEND;
90e61690 CH	90
90e61690 CH	91	perms->userflags = HFSPLUS_I(inode)->userflags;
1da177e4	92	perms->mode = cpu_to_be16(inode->i_mode);
16525e3f EB	93	perms->owner = cpu_to_be32(i_uid_read(inode));
16525e3f EB	94	perms->group = cpu_to_be32(i_gid_read(inode));
90e61690 CH	95
	96	if (S_ISREG(inode->i_mode))
	97	perms->dev = cpu_to_be32(inode->i_nlink);
	98	else if (S_ISBLK(inode->i_mode) \|\| S_ISCHR(inode->i_mode))
	99	perms->dev = cpu_to_be32(inode->i_rdev);
	100	else
	101	perms->dev = 0;
1da177e4 LT	102	}
1da177e4 LT	103
2753cc28 AS	104	static int hfsplus_cat_build_record(hfsplus_cat_entry *entry,
2753cc28 AS	105	u32 cnid, struct inode *inode)
1da177e4	106	{
dd73a01a CH	107	struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
dd73a01a CH	108
1da177e4 LT	109	if (S_ISDIR(inode->i_mode)) {
	110	struct hfsplus_cat_folder *folder;
	111
	112	folder = &entry->folder;
	113	memset(folder, 0, sizeof(*folder));
	114	folder->type = cpu_to_be16(HFSPLUS_FOLDER);
d7d673a5 SA	115	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags))
d7d673a5 SA	116	folder->flags \|= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT);
1da177e4	117	folder->id = cpu_to_be32(inode->i_ino);
6af502de	118	HFSPLUS_I(inode)->create_date =
9a4cad95 RZ	119	folder->create_date =
	120	folder->content_mod_date =
	121	folder->attribute_mod_date =
	122	folder->access_date = hfsp_now2mt();
90e61690	123	hfsplus_cat_set_perms(inode, &folder->permissions);
dd73a01a	124	if (inode == sbi->hidden_dir)
1da177e4 LT	125	/* invisible and namelocked */
	126	folder->user_info.frFlags = cpu_to_be16(0x5000);
	127	return sizeof(*folder);
	128	} else {
	129	struct hfsplus_cat_file *file;
	130
	131	file = &entry->file;
	132	memset(file, 0, sizeof(*file));
	133	file->type = cpu_to_be16(HFSPLUS_FILE);
	134	file->flags = cpu_to_be16(HFSPLUS_FILE_THREAD_EXISTS);
	135	file->id = cpu_to_be32(cnid);
6af502de	136	HFSPLUS_I(inode)->create_date =
9a4cad95 RZ	137	file->create_date =
	138	file->content_mod_date =
	139	file->attribute_mod_date =
	140	file->access_date = hfsp_now2mt();
1da177e4	141	if (cnid == inode->i_ino) {
90e61690	142	hfsplus_cat_set_perms(inode, &file->permissions);
6b192832	143	if (S_ISLNK(inode->i_mode)) {
2753cc28 AS	144	file->user_info.fdType =
	145	cpu_to_be32(HFSP_SYMLINK_TYPE);
	146	file->user_info.fdCreator =
	147	cpu_to_be32(HFSP_SYMLINK_CREATOR);
6b192832	148	} else {
2753cc28 AS	149	file->user_info.fdType =
	150	cpu_to_be32(sbi->type);
	151	file->user_info.fdCreator =
	152	cpu_to_be32(sbi->creator);
6b192832	153	}
2753cc28 AS	154	if (HFSPLUS_FLG_IMMUTABLE &
	155	(file->permissions.rootflags \|
	156	file->permissions.userflags))
	157	file->flags \|=
	158	cpu_to_be16(HFSPLUS_FILE_LOCKED);
1da177e4	159	} else {
2753cc28 AS	160	file->user_info.fdType =
	161	cpu_to_be32(HFSP_HARDLINK_TYPE);
	162	file->user_info.fdCreator =
	163	cpu_to_be32(HFSP_HFSPLUS_CREATOR);
	164	file->user_info.fdFlags =
	165	cpu_to_be16(0x100);
	166	file->create_date =
	167	HFSPLUS_I(sbi->hidden_dir)->create_date;
	168	file->permissions.dev =
	169	cpu_to_be32(HFSPLUS_I(inode)->linkid);
1da177e4 LT	170	}
	171	return sizeof(*file);
	172	}
	173	}
	174
	175	static int hfsplus_fill_cat_thread(struct super_block *sb,
	176	hfsplus_cat_entry *entry, int type,
	177	u32 parentid, struct qstr *str)
	178	{
89ac9b4d SS	179	int err;
89ac9b4d SS	180
1da177e4 LT	181	entry->type = cpu_to_be16(type);
	182	entry->thread.reserved = 0;
	183	entry->thread.parentID = cpu_to_be32(parentid);
89ac9b4d	184	err = hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
324ef39a	185	str->name, str->len);
89ac9b4d SS	186	if (unlikely(err < 0))
	187	return err;
	188
1da177e4 LT	189	return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
	190	}
	191
	192	/* Try to get a catalog entry for given catalog id */
	193	int hfsplus_find_cat(struct super_block *sb, u32 cnid,
	194	struct hfs_find_data *fd)
	195	{
	196	hfsplus_cat_entry tmp;
	197	int err;
	198	u16 type;
	199
89ac9b4d	200	hfsplus_cat_build_key_with_cnid(sb, fd->search_key, cnid);
1da177e4 LT	201	err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
	202	if (err)
	203	return err;
	204
	205	type = be16_to_cpu(tmp.type);
	206	if (type != HFSPLUS_FOLDER_THREAD && type != HFSPLUS_FILE_THREAD) {
d6142673	207	pr_err("found bad thread record in catalog\n");
1da177e4 LT	208	return -EIO;
	209	}
	210
efc7ffcb	211	if (be16_to_cpu(tmp.thread.nodeName.length) > 255) {
d6142673	212	pr_err("catalog name length corrupted\n");
efc7ffcb ES	213	return -EIO;
	214	}
	215
2753cc28 AS	216	hfsplus_cat_build_key_uni(fd->search_key,
	217	be32_to_cpu(tmp.thread.parentID),
	218	&tmp.thread.nodeName);
324ef39a	219	return hfs_brec_find(fd, hfs_find_rec_by_key);
1da177e4 LT	220	}
1da177e4 LT	221
d7d673a5 SA	222	static void hfsplus_subfolders_inc(struct inode *dir)
	223	{
	224	struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
	225
	226	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
	227	/*
	228	* Increment subfolder count. Note, the value is only meaningful
	229	* for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
	230	*/
	231	HFSPLUS_I(dir)->subfolders++;
	232	}
	233	}
	234
	235	static void hfsplus_subfolders_dec(struct inode *dir)
	236	{
	237	struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
	238
	239	if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) {
	240	/*
	241	* Decrement subfolder count. Note, the value is only meaningful
	242	* for folders with HFSPLUS_HAS_FOLDER_COUNT flag set.
	243	*
	244	* Check for zero. Some subfolders may have been created
	245	* by an implementation ignorant of this counter.
	246	*/
	247	if (HFSPLUS_I(dir)->subfolders)
	248	HFSPLUS_I(dir)->subfolders--;
	249	}
	250	}
	251
2753cc28 AS	252	int hfsplus_create_cat(u32 cnid, struct inode *dir,
2753cc28 AS	253	struct qstr str, struct inode inode)
1da177e4	254	{
dd73a01a	255	struct super_block *sb = dir->i_sb;
1da177e4	256	struct hfs_find_data fd;
1da177e4 LT	257	hfsplus_cat_entry entry;
	258	int entry_size;
	259	int err;
	260
c2b3e1f7	261	hfs_dbg(CAT_MOD, "create_cat: %s,%u(%d)\n",
2753cc28	262	str->name, cnid, inode->i_nlink);
5bd9d99d AK	263	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
	264	if (err)
	265	return err;
1da177e4	266
89ac9b4d	267	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
2753cc28 AS	268	entry_size = hfsplus_fill_cat_thread(sb, &entry,
2753cc28 AS	269	S_ISDIR(inode->i_mode) ?
1da177e4	270	HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
2753cc28	271	dir->i_ino, str);
89ac9b4d SS	272	if (unlikely(entry_size < 0)) {
	273	err = entry_size;
	274	goto err2;
	275	}
	276
324ef39a	277	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
1da177e4 LT	278	if (err != -ENOENT) {
	279	if (!err)
	280	err = -EEXIST;
	281	goto err2;
	282	}
	283	err = hfs_brec_insert(&fd, &entry, entry_size);
	284	if (err)
	285	goto err2;
	286
89ac9b4d SS	287	err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	288	if (unlikely(err))
	289	goto err1;
	290
1da177e4	291	entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
324ef39a	292	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
1da177e4 LT	293	if (err != -ENOENT) {
	294	/* panic? */
	295	if (!err)
	296	err = -EEXIST;
	297	goto err1;
	298	}
	299	err = hfs_brec_insert(&fd, &entry, entry_size);
	300	if (err)
	301	goto err1;
	302
	303	dir->i_size++;
d7d673a5 SA	304	if (S_ISDIR(inode->i_mode))
d7d673a5 SA	305	hfsplus_subfolders_inc(dir);
1da177e4	306	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
e3494705 CH	307	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
e3494705 CH	308
1da177e4 LT	309	hfs_find_exit(&fd);
	310	return 0;
	311
	312	err1:
89ac9b4d	313	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
324ef39a	314	if (!hfs_brec_find(&fd, hfs_find_rec_by_key))
1da177e4 LT	315	hfs_brec_remove(&fd);
	316	err2:
	317	hfs_find_exit(&fd);
	318	return err;
	319	}
	320
	321	int hfsplus_delete_cat(u32 cnid, struct inode dir, struct qstr str)
	322	{
dd73a01a	323	struct super_block *sb = dir->i_sb;
1da177e4 LT	324	struct hfs_find_data fd;
	325	struct hfsplus_fork_raw fork;
	326	struct list_head *pos;
	327	int err, off;
	328	u16 type;
	329
c2b3e1f7	330	hfs_dbg(CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, cnid);
5bd9d99d AK	331	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
	332	if (err)
	333	return err;
1da177e4 LT	334
	335	if (!str) {
	336	int len;
	337
89ac9b4d	338	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
324ef39a	339	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
1da177e4 LT	340	if (err)
	341	goto out;
	342
2753cc28 AS	343	off = fd.entryoffset +
2753cc28 AS	344	offsetof(struct hfsplus_cat_thread, nodeName);
1da177e4	345	fd.search_key->cat.parent = cpu_to_be32(dir->i_ino);
2753cc28 AS	346	hfs_bnode_read(fd.bnode,
2753cc28 AS	347	&fd.search_key->cat.name.length, off, 2);
1da177e4	348	len = be16_to_cpu(fd.search_key->cat.name.length) * 2;
2753cc28 AS	349	hfs_bnode_read(fd.bnode,
	350	&fd.search_key->cat.name.unicode,
	351	off + 2, len);
1da177e4	352	fd.search_key->key_len = cpu_to_be16(6 + len);
f01fa5fb	353	} else {
89ac9b4d SS	354	err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
	355	if (unlikely(err))
	356	goto out;
f01fa5fb	357	}
1da177e4	358
324ef39a	359	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
1da177e4 LT	360	if (err)
	361	goto out;
	362
	363	type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset);
	364	if (type == HFSPLUS_FILE) {
	365	#if 0
	366	off = fd.entryoffset + offsetof(hfsplus_cat_file, data_fork);
	367	hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
	368	hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_DATA);
	369	#endif
	370
2753cc28 AS	371	off = fd.entryoffset +
2753cc28 AS	372	offsetof(struct hfsplus_cat_file, rsrc_fork);
1da177e4 LT	373	hfs_bnode_read(fd.bnode, &fork, off, sizeof(fork));
	374	hfsplus_free_fork(sb, cnid, &fork, HFSPLUS_TYPE_RSRC);
	375	}
	376
323ee8fc AV	377	/* we only need to take spinlock for exclusion with ->release() */
323ee8fc AV	378	spin_lock(&HFSPLUS_I(dir)->open_dir_lock);
6af502de	379	list_for_each(pos, &HFSPLUS_I(dir)->open_dir_list) {
1da177e4 LT	380	struct hfsplus_readdir_data *rd =
	381	list_entry(pos, struct hfsplus_readdir_data, list);
	382	if (fd.tree->keycmp(fd.search_key, (void *)&rd->key) < 0)
	383	rd->file->f_pos--;
	384	}
323ee8fc	385	spin_unlock(&HFSPLUS_I(dir)->open_dir_lock);
1da177e4 LT	386
	387	err = hfs_brec_remove(&fd);
	388	if (err)
	389	goto out;
	390
89ac9b4d	391	hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
324ef39a	392	err = hfs_brec_find(&fd, hfs_find_rec_by_key);
1da177e4 LT	393	if (err)
	394	goto out;
	395
	396	err = hfs_brec_remove(&fd);
	397	if (err)
	398	goto out;
	399
	400	dir->i_size--;
d7d673a5 SA	401	if (type == HFSPLUS_FOLDER)
d7d673a5 SA	402	hfsplus_subfolders_dec(dir);
1da177e4	403	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
e3494705	404	hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY);
324ef39a VD	405
	406	if (type == HFSPLUS_FILE \|\| type == HFSPLUS_FOLDER) {
	407	if (HFSPLUS_SB(sb)->attr_tree)
	408	hfsplus_delete_all_attrs(dir, cnid);
	409	}
	410
1da177e4 LT	411	out:
	412	hfs_find_exit(&fd);
	413
	414	return err;
	415	}
	416
	417	int hfsplus_rename_cat(u32 cnid,
	418	struct inode src_dir, struct qstr src_name,
	419	struct inode dst_dir, struct qstr dst_name)
	420	{
dd73a01a	421	struct super_block *sb = src_dir->i_sb;
1da177e4 LT	422	struct hfs_find_data src_fd, dst_fd;
	423	hfsplus_cat_entry entry;
	424	int entry_size, type;
5bd9d99d	425	int err;
1da177e4	426
c2b3e1f7	427	hfs_dbg(CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n",
2753cc28	428	cnid, src_dir->i_ino, src_name->name,
1da177e4	429	dst_dir->i_ino, dst_name->name);
5bd9d99d AK	430	err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &src_fd);
	431	if (err)
	432	return err;
1da177e4 LT	433	dst_fd = src_fd;
	434
	435	/* find the old dir entry and read the data */
89ac9b4d SS	436	err = hfsplus_cat_build_key(sb, src_fd.search_key,
	437	src_dir->i_ino, src_name);
	438	if (unlikely(err))
	439	goto out;
	440
324ef39a	441	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
1da177e4 LT	442	if (err)
1da177e4 LT	443	goto out;
6f24f892 GKH	444	if (src_fd.entrylength > sizeof(entry) \|\| src_fd.entrylength < 0) {
	445	err = -EIO;
	446	goto out;
	447	}
1da177e4 LT	448
	449	hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
	450	src_fd.entrylength);
d7d673a5	451	type = be16_to_cpu(entry.type);
1da177e4 LT	452
1da177e4 LT	453	/* create new dir entry with the data from the old entry */
89ac9b4d SS	454	err = hfsplus_cat_build_key(sb, dst_fd.search_key,
	455	dst_dir->i_ino, dst_name);
	456	if (unlikely(err))
	457	goto out;
	458
324ef39a	459	err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
1da177e4 LT	460	if (err != -ENOENT) {
	461	if (!err)
	462	err = -EEXIST;
	463	goto out;
	464	}
	465
	466	err = hfs_brec_insert(&dst_fd, &entry, src_fd.entrylength);
	467	if (err)
	468	goto out;
	469	dst_dir->i_size++;
d7d673a5 SA	470	if (type == HFSPLUS_FOLDER)
d7d673a5 SA	471	hfsplus_subfolders_inc(dst_dir);
1da177e4	472	dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
1da177e4 LT	473
1da177e4 LT	474	/* finally remove the old entry */
89ac9b4d SS	475	err = hfsplus_cat_build_key(sb, src_fd.search_key,
	476	src_dir->i_ino, src_name);
	477	if (unlikely(err))
	478	goto out;
	479
324ef39a	480	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
1da177e4 LT	481	if (err)
	482	goto out;
	483	err = hfs_brec_remove(&src_fd);
	484	if (err)
	485	goto out;
	486	src_dir->i_size--;
d7d673a5 SA	487	if (type == HFSPLUS_FOLDER)
d7d673a5 SA	488	hfsplus_subfolders_dec(src_dir);
1da177e4	489	src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
1da177e4 LT	490
1da177e4 LT	491	/* remove old thread entry */
89ac9b4d	492	hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid);
324ef39a	493	err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
1da177e4 LT	494	if (err)
	495	goto out;
	496	type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset);
	497	err = hfs_brec_remove(&src_fd);
	498	if (err)
	499	goto out;
	500
	501	/* create new thread entry */
89ac9b4d	502	hfsplus_cat_build_key_with_cnid(sb, dst_fd.search_key, cnid);
2753cc28 AS	503	entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
2753cc28 AS	504	dst_dir->i_ino, dst_name);
89ac9b4d SS	505	if (unlikely(entry_size < 0)) {
	506	err = entry_size;
	507	goto out;
	508	}
	509
324ef39a	510	err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
1da177e4 LT	511	if (err != -ENOENT) {
	512	if (!err)
	513	err = -EEXIST;
	514	goto out;
	515	}
	516	err = hfs_brec_insert(&dst_fd, &entry, entry_size);
e3494705 CH	517
	518	hfsplus_mark_inode_dirty(dst_dir, HFSPLUS_I_CAT_DIRTY);
	519	hfsplus_mark_inode_dirty(src_dir, HFSPLUS_I_CAT_DIRTY);
1da177e4 LT	520	out:
	521	hfs_bnode_put(dst_fd.bnode);
	522	hfs_find_exit(&src_fd);
	523	return err;
	524	}