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192.168.1.100 / T103 / 1f884588077ad3476b9c91cbb0ee9ee0332bbb68 / . / src / kernel / linux / v4.14 / fs / squashfs / squashfs.h
blob: a9ea6ee34ec23b2cf1d9447534f0528e0e11e972 [file] [log] [blame]
rjw1f884582022-01-06 17:20:42 +0800[diff] [blame^]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_init_read_wq(void);
32extern void squashfs_destroy_read_wq(void);
33extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
34 struct squashfs_page_actor *);
35extern int squashfs_read_data_async(struct super_block *, u64, int, u64 *,
36 struct squashfs_page_actor *);
37
38/* cache.c */
39extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
40extern void squashfs_cache_delete(struct squashfs_cache *);
41extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
42 struct squashfs_cache *, u64, int);
43extern void squashfs_cache_put(struct squashfs_cache_entry *);
44extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
45extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
46 int *, int);
47extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
48 u64, int);
49extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
50 u64, int);
51extern void *squashfs_read_table(struct super_block *, u64, int);
52
53/* decompressor.c */
54extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
55extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
56
57/* decompressor_xxx.c */
58extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *);
59extern void squashfs_decompressor_destroy(struct squashfs_sb_info *);
60extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
61 int, int, int, struct squashfs_page_actor *);
62extern int squashfs_max_decompressors(void);
63
64/* export.c */
65extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
66 unsigned int);
67
68/* fragment.c */
69extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
70extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
71 u64, u64, unsigned int);
72
73/* file.c */
74void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
75void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
76 int);
77
78/* file_direct.c */
79extern int squashfs_readpages_block(struct page *, struct list_head *,
80 unsigned int *, struct address_space *, int, u64, int);
81
82/* id.c */
83extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
84extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
85 unsigned short);
86
87/* inode.c */
88extern struct inode *squashfs_iget(struct super_block *, long long,
89 unsigned int);
90extern int squashfs_read_inode(struct inode *, long long);
91
92/* xattr.c */
93extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
94
95/*
96 * Inodes, files, decompressor and xattr operations
97 */
98
99/* dir.c */
100extern const struct file_operations squashfs_dir_ops;
101
102/* export.c */
103extern const struct export_operations squashfs_export_ops;
104
105/* file.c */
106extern const struct address_space_operations squashfs_aops;
107
108/* inode.c */
109extern const struct inode_operations squashfs_inode_ops;
110
111/* namei.c */
112extern const struct inode_operations squashfs_dir_inode_ops;
113
114/* symlink.c */
115extern const struct address_space_operations squashfs_symlink_aops;
116extern const struct inode_operations squashfs_symlink_inode_ops;
117
118/* xattr.c */
119extern const struct xattr_handler *squashfs_xattr_handlers[];