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@squashfs.org.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_warn("SQUASHFS: "s, ## args)
29
30/* block.c */
31extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
32				struct squashfs_page_actor *);
33
34/* cache.c */
35extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
36extern void squashfs_cache_delete(struct squashfs_cache *);
37extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
38				struct squashfs_cache *, u64, int);
39extern void squashfs_cache_put(struct squashfs_cache_entry *);
40extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
41extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
42				int *, int);
43extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
44				u64, int);
45extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
46				u64, int);
47extern void *squashfs_read_table(struct super_block *, u64, int);
48
49/* decompressor.c */
50extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
51extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
52
53/* decompressor_xxx.c */
54extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *);
55extern void squashfs_decompressor_destroy(struct squashfs_sb_info *);
56extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
57	int, int, int, struct squashfs_page_actor *);
58extern int squashfs_max_decompressors(void);
59
60/* export.c */
61extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
62				unsigned int);
63
64/* fragment.c */
65extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
66extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
67				u64, u64, unsigned int);
68
69/* file.c */
70void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
71				int);
72
73/* file_xxx.c */
74extern int squashfs_readpage_block(struct page *, u64, int);
75
76/* id.c */
77extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
78extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
79				unsigned short);
80
81/* inode.c */
82extern struct inode *squashfs_iget(struct super_block *, long long,
83				unsigned int);
84extern int squashfs_read_inode(struct inode *, long long);
85
86/* xattr.c */
87extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
88
89/*
90 * Inodes, files,  decompressor and xattr operations
91 */
92
93/* dir.c */
94extern const struct file_operations squashfs_dir_ops;
95
96/* export.c */
97extern const struct export_operations squashfs_export_ops;
98
99/* file.c */
100extern const struct address_space_operations squashfs_aops;
101
102/* inode.c */
103extern const struct inode_operations squashfs_inode_ops;
104
105/* namei.c */
106extern const struct inode_operations squashfs_dir_inode_ops;
107
108/* symlink.c */
109extern const struct address_space_operations squashfs_symlink_aops;
110extern const struct inode_operations squashfs_symlink_inode_ops;
111
112/* xattr.c */
113extern const struct xattr_handler *squashfs_xattr_handlers[];
114