2 * Squashfs - a compressed read only filesystem for Linux
4 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
5 * Phillip Lougher <phillip@squashfs.org.uk>
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.
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.
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.
24 #define TRACE(s, args...) pr_debug("SQUASHFS: "s, ## args)
26 #define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args)
28 #define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args)
31 extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
32 struct squashfs_page_actor *);
35 extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
36 extern void squashfs_cache_delete(struct squashfs_cache *);
37 extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
38 struct squashfs_cache *, u64, int);
39 extern void squashfs_cache_put(struct squashfs_cache_entry *);
40 extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
41 extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
43 extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
45 extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
47 extern void *squashfs_read_table(struct super_block *, u64, int);
50 extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
51 extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
53 /* decompressor_xxx.c */
54 extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *);
55 extern void squashfs_decompressor_destroy(struct squashfs_sb_info *);
56 extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
57 int, int, int, struct squashfs_page_actor *);
58 extern int squashfs_max_decompressors(void);
61 extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
65 extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
66 extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
67 u64, u64, unsigned int);
70 void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
74 extern int squashfs_readpage_block(struct page *, u64, int);
77 extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
78 extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
82 extern struct inode *squashfs_iget(struct super_block *, long long,
84 extern int squashfs_read_inode(struct inode *, long long);
87 extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
90 * Inodes, files, decompressor and xattr operations
94 extern const struct file_operations squashfs_dir_ops;
97 extern const struct export_operations squashfs_export_ops;
100 extern const struct address_space_operations squashfs_aops;
103 extern const struct inode_operations squashfs_inode_ops;
106 extern const struct inode_operations squashfs_dir_inode_ops;
109 extern const struct address_space_operations squashfs_symlink_aops;
110 extern const struct inode_operations squashfs_symlink_inode_ops;
113 extern const struct xattr_handler *squashfs_xattr_handlers[];