summaryrefslogtreecommitdiffstats
path: root/fs/squashfs/squashfs.h
blob: 5a756e6790b5b75705c5c0d8a22fa99463a13b29 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Squashfs - a compressed read only filesystem for Linux
 *
 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
 * Phillip Lougher <phillip@squashfs.org.uk>
 *
 * squashfs.h
 */

#define TRACE(s, args...)	pr_debug("SQUASHFS: "s, ## args)

#define ERROR(s, args...)	pr_err("SQUASHFS error: "s, ## args)

#define WARNING(s, args...)	pr_warn("SQUASHFS: "s, ## args)

/* block.c */
extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
				struct squashfs_page_actor *);

/* cache.c */
extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
extern void squashfs_cache_delete(struct squashfs_cache *);
extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
				struct squashfs_cache *, u64, int);
extern void squashfs_cache_put(struct squashfs_cache_entry *);
extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
				int *, int);
extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
				u64, int);
extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
				u64, int);
extern void *squashfs_read_table(struct super_block *, u64, int);

/* decompressor.c */
extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);

/* decompressor_xxx.c */

struct squashfs_decompressor_thread_ops {
	void * (*create)(struct squashfs_sb_info *msblk, void *comp_opts);
	void (*destroy)(struct squashfs_sb_info *msblk);
	int (*decompress)(struct squashfs_sb_info *msblk, struct bio *bio,
			  int offset, int length, struct squashfs_page_actor *output);
	int (*max_decompressors)(void);
};

#ifdef CONFIG_SQUASHFS_DECOMP_SINGLE
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_single;
#endif
#ifdef CONFIG_SQUASHFS_DECOMP_MULTI
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_multi;
#endif
#ifdef CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU
extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_percpu;
#endif

/* export.c */
extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
				unsigned int);

/* fragment.c */
extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
				u64, u64, unsigned int);

/* file.c */
void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
				int);

/* file_xxx.c */
extern int squashfs_readpage_block(struct page *, u64, int, int);

/* id.c */
extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
				unsigned short);

/* inode.c */
extern struct inode *squashfs_iget(struct super_block *, long long,
				unsigned int);
extern int squashfs_read_inode(struct inode *, long long);

/* xattr.c */
extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);

/*
 * Inodes, files,  decompressor and xattr operations
 */

/* dir.c */
extern const struct file_operations squashfs_dir_ops;

/* export.c */
extern const struct export_operations squashfs_export_ops;

/* file.c */
extern const struct address_space_operations squashfs_aops;

/* inode.c */
extern const struct inode_operations squashfs_inode_ops;

/* namei.c */
extern const struct inode_operations squashfs_dir_inode_ops;

/* symlink.c */
extern const struct address_space_operations squashfs_symlink_aops;
extern const struct inode_operations squashfs_symlink_inode_ops;

/* xattr.c */
extern const struct xattr_handler * const squashfs_xattr_handlers[];