xref: /external/squashfs-tools/kernel/include/linux/squashfs_fs_sb.h

#ifndef SQUASHFS_FS_SB
#define SQUASHFS_FS_SB
/*
 * Squashfs
 *
 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
 * Phillip Lougher <phillip@lougher.demon.co.uk>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * squashfs_fs_sb.h
 */

#include "squashfs_fs.h"

struct squashfs_cache_entry {
	long long		block;
	int			length;
	int			locked;
	long long		next_index;
	char			pending;
	char			error;
	int			waiting;
	wait_queue_head_t	wait_queue;
	char			*data;
};

struct squashfs_cache {
	char			*name;
	int			entries;
	int			block_size;
	int			next_blk;
	int			waiting;
	int			unused;
	int			use_vmalloc;
	spinlock_t		lock;
	wait_queue_head_t	wait_queue;
	struct squashfs_cache_entry entry[0];
};

struct squashfs_sb_info {
	int			devblksize;
	int			devblksize_log2;
	struct squashfs_cache	*block_cache;
	struct squashfs_cache	*fragment_cache;
	int			next_meta_index;
	__le64			*id_table;
	__le64			*fragment_index;
	unsigned int		*fragment_index_2;
	char			*read_page;
	struct mutex		read_data_mutex;
	struct mutex		read_page_mutex;
	struct mutex		meta_index_mutex;
	struct meta_index	*meta_index;
	z_stream		stream;
	__le64			*inode_lookup_table;
	long long		inode_table;
	long long		directory_table;
	unsigned int		block_size;
	unsigned short		block_log;
	long long		bytes_used;
	unsigned int		inodes;
};
#endif