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review.trustedfirmware.org / hafnium / third_party / linux / 0e64123141f3854e695eb4924d82b52856691466 / . / fs / squashfs / squashfs.h
blob: 2797763ed046a3482835046ba3b00e4ade3848c3 [file] [log] [blame]
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-or-later */
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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 *
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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[];