1 #ifndef SQUASHFS_FS_SB
2 #define SQUASHFS_FS_SB
3 /*
4  * Squashfs
5  *
6  * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
7  * Phillip Lougher <phillip@squashfs.org.uk>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version 2,
12  * or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22  *
23  * squashfs_fs_sb.h
24  */
25 
26 #include "squashfs_fs.h"
27 
28 struct squashfs_cache {
29 	char			*name;
30 	int			entries;
31 	int			curr_blk;
32 	int			next_blk;
33 	int			num_waiters;
34 	int			unused;
35 	int			block_size;
36 	int			pages;
37 	spinlock_t		lock;
38 	wait_queue_head_t	wait_queue;
39 	struct squashfs_cache_entry *entry;
40 };
41 
42 struct squashfs_cache_entry {
43 	u64			block;
44 	int			length;
45 	int			refcount;
46 	u64			next_index;
47 	int			pending;
48 	int			error;
49 	int			num_waiters;
50 	wait_queue_head_t	wait_queue;
51 	struct squashfs_cache	*cache;
52 	void			**data;
53 	struct squashfs_page_actor	*actor;
54 };
55 
56 struct squashfs_sb_info {
57 	const struct squashfs_decompressor	*decompressor;
58 	int					devblksize;
59 	int					devblksize_log2;
60 	struct squashfs_cache			*block_cache;
61 	struct squashfs_cache			*fragment_cache;
62 	struct squashfs_cache			*read_page;
63 	int					next_meta_index;
64 	__le64					*id_table;
65 	__le64					*fragment_index;
66 	__le64					*xattr_id_table;
67 	struct mutex				meta_index_mutex;
68 	struct meta_index			*meta_index;
69 	struct squashfs_stream			*stream;
70 	__le64					*inode_lookup_table;
71 	u64					inode_table;
72 	u64					directory_table;
73 	u64					xattr_table;
74 	unsigned int				block_size;
75 	unsigned short				block_log;
76 	long long				bytes_used;
77 	unsigned int				inodes;
78 	unsigned int				fragments;
79 	unsigned int				xattr_ids;
80 	unsigned int				ids;
81 };
82 #endif
83