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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 */
41
42struct squashfs_decompressor_thread_ops {
43 void * (*create)(struct squashfs_sb_info *msblk, void *comp_opts);
44 void (*destroy)(struct squashfs_sb_info *msblk);
45 int (*decompress)(struct squashfs_sb_info *msblk, struct bio *bio,
46 int offset, int length, struct squashfs_page_actor *output);
47 int (*max_decompressors)(void);
48};
49
50#ifdef CONFIG_SQUASHFS_DECOMP_SINGLE
51extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_single;
52#endif
53#ifdef CONFIG_SQUASHFS_DECOMP_MULTI
54extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_multi;
55#endif
56#ifdef CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU
57extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_percpu;
58#endif
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_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
71void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
72 int);
73
74/* file_xxx.c */
75extern int squashfs_readpage_block(struct page *, u64, int, int);
76
77/* id.c */
78extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
79extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
80 unsigned short);
81
82/* inode.c */
83extern struct inode *squashfs_iget(struct super_block *, long long,
84 unsigned int);
85extern int squashfs_read_inode(struct inode *, long long);
86
87/* xattr.c */
88extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
89
90/*
91 * Inodes, files, decompressor and xattr operations
92 */
93
94/* dir.c */
95extern const struct file_operations squashfs_dir_ops;
96
97/* export.c */
98extern const struct export_operations squashfs_export_ops;
99
100/* file.c */
101extern const struct address_space_operations squashfs_aops;
102
103/* inode.c */
104extern const struct inode_operations squashfs_inode_ops;
105
106/* namei.c */
107extern const struct inode_operations squashfs_dir_inode_ops;
108
109/* symlink.c */
110extern const struct address_space_operations squashfs_symlink_aops;
111extern const struct inode_operations squashfs_symlink_inode_ops;
112
113/* xattr.c */
114extern const struct xattr_handler * const squashfs_xattr_handlers[];