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 */ |
18 | extern int squashfs_read_data(struct super_block *, u64, int, u64 *, |
19 | struct squashfs_page_actor *); |
20 | |
21 | /* cache.c */ |
22 | extern struct squashfs_cache *squashfs_cache_init(char *, int, int); |
23 | extern void squashfs_cache_delete(struct squashfs_cache *); |
24 | extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *, |
25 | struct squashfs_cache *, u64, int); |
26 | extern void squashfs_cache_put(struct squashfs_cache_entry *); |
27 | extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int); |
28 | extern int squashfs_read_metadata(struct super_block *, void *, u64 *, |
29 | int *, int); |
30 | extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *, |
31 | u64, int); |
32 | extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *, |
33 | u64, int); |
34 | extern void *squashfs_read_table(struct super_block *, u64, int); |
35 | |
36 | /* decompressor.c */ |
37 | extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int); |
38 | extern void *squashfs_decompressor_setup(struct super_block *, unsigned short); |
39 | |
40 | /* decompressor_xxx.c */ |
41 | |
42 | struct 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 |
51 | extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_single; |
52 | #endif |
53 | #ifdef CONFIG_SQUASHFS_DECOMP_MULTI |
54 | extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_multi; |
55 | #endif |
56 | #ifdef CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU |
57 | extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_percpu; |
58 | #endif |
59 | |
60 | /* export.c */ |
61 | extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64, |
62 | unsigned int); |
63 | |
64 | /* fragment.c */ |
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); |
68 | |
69 | /* file.c */ |
70 | void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int); |
71 | void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int, |
72 | int); |
73 | |
74 | /* file_xxx.c */ |
75 | extern int squashfs_readpage_block(struct page *, u64, int, int); |
76 | |
77 | /* id.c */ |
78 | extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); |
79 | extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, |
80 | unsigned short); |
81 | |
82 | /* inode.c */ |
83 | extern struct inode *squashfs_iget(struct super_block *, long long, |
84 | unsigned int); |
85 | extern int squashfs_read_inode(struct inode *, long long); |
86 | |
87 | /* xattr.c */ |
88 | extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t); |
89 | |
90 | /* |
91 | * Inodes, files, decompressor and xattr operations |
92 | */ |
93 | |
94 | /* dir.c */ |
95 | extern const struct file_operations squashfs_dir_ops; |
96 | |
97 | /* export.c */ |
98 | extern const struct export_operations squashfs_export_ops; |
99 | |
100 | /* file.c */ |
101 | extern const struct address_space_operations squashfs_aops; |
102 | |
103 | /* inode.c */ |
104 | extern const struct inode_operations squashfs_inode_ops; |
105 | |
106 | /* namei.c */ |
107 | extern const struct inode_operations squashfs_dir_inode_ops; |
108 | |
109 | /* symlink.c */ |
110 | extern const struct address_space_operations squashfs_symlink_aops; |
111 | extern const struct inode_operations squashfs_symlink_inode_ops; |
112 | |
113 | /* xattr.c */ |
114 | extern const struct xattr_handler * const squashfs_xattr_handlers[]; |
115 | |