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_warning("SQUASHFS: "s, ## args)
29
30/* block.c */
31extern int squashfs_read_data(struct super_block *, void **, u64, int, u64 *,
32				int, int);
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_init(struct super_block *, unsigned short);
 
 
 
 
 
 
 
52
53/* export.c */
54extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
55				unsigned int);
56
57/* fragment.c */
58extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
59extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
60				u64, u64, unsigned int);
 
 
 
 
 
 
 
 
61
62/* id.c */
63extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
64extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
65				unsigned short);
66
67/* inode.c */
68extern struct inode *squashfs_iget(struct super_block *, long long,
69				unsigned int);
70extern int squashfs_read_inode(struct inode *, long long);
71
72/* xattr.c */
73extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
74
75/*
76 * Inodes, files,  decompressor and xattr operations
77 */
78
79/* dir.c */
80extern const struct file_operations squashfs_dir_ops;
81
82/* export.c */
83extern const struct export_operations squashfs_export_ops;
84
85/* file.c */
86extern const struct address_space_operations squashfs_aops;
87
88/* inode.c */
89extern const struct inode_operations squashfs_inode_ops;
90
91/* namei.c */
92extern const struct inode_operations squashfs_dir_inode_ops;
93
94/* symlink.c */
95extern const struct address_space_operations squashfs_symlink_aops;
96extern const struct inode_operations squashfs_symlink_inode_ops;
97
98/* xattr.c */
99extern const struct xattr_handler *squashfs_xattr_handlers[];

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * Squashfs - a compressed read only filesystem for Linux
  4 *
  5 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
  6 * Phillip Lougher <phillip@squashfs.org.uk>
  7 *
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  8 * squashfs.h
  9 */
 10
 11#define TRACE(s, args...)	pr_debug("SQUASHFS: "s, ## args)
 12
 13#define ERROR(s, args...)	pr_err("SQUASHFS error: "s, ## args)
 14
 15#define WARNING(s, args...)	pr_warn("SQUASHFS: "s, ## args)
 16
 17/* block.c */
 18extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
 19				struct squashfs_page_actor *);
 20
 21/* cache.c */
 22extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
 23extern void squashfs_cache_delete(struct squashfs_cache *);
 24extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
 25				struct squashfs_cache *, u64, int);
 26extern void squashfs_cache_put(struct squashfs_cache_entry *);
 27extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
 28extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
 29				int *, int);
 30extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
 31				u64, int);
 32extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
 33				u64, int);
 34extern void *squashfs_read_table(struct super_block *, u64, int);
 35
 36/* decompressor.c */
 37extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
 38extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
 39
 40/* decompressor_xxx.c */
 41extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *);
 42extern void squashfs_decompressor_destroy(struct squashfs_sb_info *);
 43extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
 44	int, int, int, struct squashfs_page_actor *);
 45extern int squashfs_max_decompressors(void);
 46
 47/* export.c */
 48extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
 49				unsigned int);
 50
 51/* fragment.c */
 52extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
 53extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
 54				u64, u64, unsigned int);
 55
 56/* file.c */
 57void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
 58void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
 59				int);
 60
 61/* file_xxx.c */
 62extern int squashfs_readpage_block(struct page *, u64, int, int);
 63
 64/* id.c */
 65extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
 66extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
 67				unsigned short);
 68
 69/* inode.c */
 70extern struct inode *squashfs_iget(struct super_block *, long long,
 71				unsigned int);
 72extern int squashfs_read_inode(struct inode *, long long);
 73
 74/* xattr.c */
 75extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
 76
 77/*
 78 * Inodes, files,  decompressor and xattr operations
 79 */
 80
 81/* dir.c */
 82extern const struct file_operations squashfs_dir_ops;
 83
 84/* export.c */
 85extern const struct export_operations squashfs_export_ops;
 86
 87/* file.c */
 88extern const struct address_space_operations squashfs_aops;
 89
 90/* inode.c */
 91extern const struct inode_operations squashfs_inode_ops;
 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;
 98extern const struct inode_operations squashfs_symlink_inode_ops;
 99
100/* xattr.c */
101extern const struct xattr_handler *squashfs_xattr_handlers[];