squashfs.h revision 93911cbac69fbc999c52939d8d8b10698cb14051 
1/*
2 * Squashfs - a compressed read only filesystem for Linux
3 *
4 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
5 * Phillip Lougher <phillip@lougher.demon.co.uk>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2,
10 * or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 *
21 * squashfs.h
22 */
23
24#define TRACE(s, args...)	pr_debug("SQUASHFS: "s, ## args)
25
26#define ERROR(s, args...)	pr_err("SQUASHFS error: "s, ## args)
27
28#define WARNING(s, args...)	pr_warning("SQUASHFS: "s, ## args)
29
30static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode)
31{
32	return list_entry(inode, struct squashfs_inode_info, vfs_inode);
33}
34
35/* block.c */
36extern int squashfs_read_data(struct super_block *, void *,
37				long long, int, long long *, int);
38
39/* cache.c */
40extern struct squashfs_cache *squashfs_cache_init(char *, int, int, int);
41extern void squashfs_cache_delete(struct squashfs_cache *);
42struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
43				struct squashfs_cache *, long long, int);
44void squashfs_cache_put(struct squashfs_cache *, struct squashfs_cache_entry *);
45extern int squashfs_read_metadata(struct super_block *, void *,
46				long long *, int *, int);
47extern struct squashfs_cache_entry *get_cached_fragment(struct super_block *,
48				long long, int);
49extern void release_cached_fragment(struct squashfs_sb_info *,
50				struct squashfs_cache_entry *);
51extern struct squashfs_cache_entry *get_datablock(struct super_block *,
52				long long, int);
53extern void release_datablock(struct squashfs_sb_info *,
54				struct squashfs_cache_entry *);
55
56/* export.c */
57extern __le64 *read_inode_lookup_table(struct super_block *, long long,
58			unsigned int);
59
60/* fragment.c */
61extern int get_fragment_location(struct super_block *, unsigned int,
62				long long *);
63extern __le64 *read_fragment_index_table(struct super_block *, long long,
64				unsigned int);
65
66/* id.c */
67extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
68extern __le64 *read_id_index_table(struct super_block *, long long,
69			unsigned short);
70
71/* inode.c */
72extern struct inode *squashfs_iget(struct super_block *, long long,
73			unsigned int);
74extern int squashfs_read_inode(struct inode *, long long);
75
76/*
77 * Inodes and files operations
78 */
79
80/* dir.c */
81extern const struct file_operations squashfs_dir_ops;
82
83/* export.c */
84extern const struct export_operations squashfs_export_ops;
85
86/* file.c */
87extern const struct address_space_operations squashfs_aops;
88
89/* namei.c */
90extern const struct inode_operations squashfs_dir_inode_ops;
91
92/* symlink.c */
93extern const struct address_space_operations squashfs_symlink_aops;
94