squashfs.h revision 71a512f2b0694f61a401c4147010d092a3f46fdb 
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 *
21 * squashfs.h
22 */
23
24#ifdef SQUASHFS_TRACE
25#define TRACE(s, args...)	printk(KERN_NOTICE "SQUASHFS: "s, ## args)
26#else
27#define TRACE(s, args...)	{}
28#endif
29
30#define ERROR(s, args...)	printk(KERN_ERR "SQUASHFS error: "s, ## args)
31
32#define SERROR(s, args...)	\
33		do { \
34			if (!silent) \
35				printk(KERN_ERR "SQUASHFS error: "s, ## args);\
36		} while (0)
37
38#define WARNING(s, args...)	printk(KERN_WARNING "SQUASHFS: "s, ## args)
39
40static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode)
41{
42	return list_entry(inode, struct squashfs_inode_info, vfs_inode);
43}
44
45/* block.c */
46extern unsigned int squashfs_read_data(struct super_block *, void *,
47				long long, unsigned int, long long *, int);
48
49/* cache.c */
50extern struct squashfs_cache *squashfs_cache_init(char *, int, int, int);
51extern void squashfs_cache_delete(struct squashfs_cache *);
52extern int squashfs_read_metadata(struct super_block *, void *,
53				long long, unsigned int, int, long long *,
54				unsigned int *);
55extern struct squashfs_cache_entry *get_cached_fragment(struct super_block *,
56				long long, int);
57extern void release_cached_fragment(struct squashfs_sb_info *,
58				struct squashfs_cache_entry *);
59
60/* export.c */
61extern __le64 *read_inode_lookup_table(struct super_block *, long long,
62			unsigned int);
63
64/* fragment.c */
65extern int get_fragment_location(struct super_block *, unsigned int,
66				long long *);
67extern __le64 *read_fragment_index_table(struct super_block *, long long,
68				unsigned int);
69
70/* id.c */
71extern int get_id(struct super_block *, unsigned int, unsigned int *);
72extern __le64 *read_id_index_table(struct super_block *, long long,
73			unsigned short);
74
75/* inode.c */
76extern struct inode *squashfs_iget(struct super_block *, long long,
77			unsigned int);
78extern int squashfs_read_inode(struct inode *, long long);
79
80/*
81 * Inodes and files operations
82 */
83
84/* dir.c */
85extern const struct file_operations squashfs_dir_ops;
86
87/* export.c */
88extern const struct export_operations squashfs_export_ops;
89
90/* file.c */
91extern const struct address_space_operations squashfs_aops;
92
93/* namei.c */
94extern const struct inode_operations squashfs_dir_inode_ops;
95
96/* symlink.c */
97extern const struct address_space_operations squashfs_symlink_aops;
98