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gerrit-public.fairphone.software / kernel / msm-4.9 / a18908edd5d012e5bba60da58de3d94691a4ca4d / . / fs / squashfs / squashfs.h
blob: f89f8a74c6cea5c6fc8723319af336e7bf1ec04b [file] [log] [blame]
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]1/*
2 * Squashfs - a compressed read only filesystem for Linux
3 *
4 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
Phillip Lougherd7f2ff62011-05-26 10:39:56 +0100[diff] [blame]5 * Phillip Lougher <phillip@squashfs.org.uk>
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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
Fabian Frederick22010832014-06-04 16:05:52 -0700[diff] [blame]28#define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args)
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]29
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]30/* block.c */
Phillip Lougher846b7302013-11-18 02:59:12 +0000[diff] [blame]31extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
32 struct squashfs_page_actor *);
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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);
Phillip Lougher82de6472011-05-20 02:26:43 +0100[diff] [blame]47extern void *squashfs_read_table(struct super_block *, u64, int);
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]48
Phillip Lougher4c0f0bb2009-10-06 04:04:15 +0100[diff] [blame]49/* decompressor.c */
50extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
Phillip Lougher9508c6b2013-11-13 02:56:26 +0000[diff] [blame]51extern void *squashfs_decompressor_setup(struct super_block *, unsigned short);
52
53/* decompressor_xxx.c */
54extern void *squashfs_decompressor_create(struct squashfs_sb_info *, void *);
55extern void squashfs_decompressor_destroy(struct squashfs_sb_info *);
Phillip Lougher846b7302013-11-18 02:59:12 +0000[diff] [blame]56extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
57 int, int, int, struct squashfs_page_actor *);
Phillip Lougher9508c6b2013-11-13 02:56:26 +0000[diff] [blame]58extern int squashfs_max_decompressors(void);
Phillip Lougher4c0f0bb2009-10-06 04:04:15 +0100[diff] [blame]59
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]60/* export.c */
Phillip Lougherac51a0a2011-05-24 04:15:21 +0100[diff] [blame]61extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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 *,
Phillip Lougher1cac63c2011-05-24 04:33:34 +0100[diff] [blame]67 u64, u64, unsigned int);
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]68
Phillip Lougher5f55dbc2013-10-31 19:24:27 +0000[diff] [blame]69/* file.c */
Linus Torvaldsab99a2b2018-08-01 10:38:43 -0700[diff] [blame]70void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
Phillip Lougher5f55dbc2013-10-31 19:24:27 +0000[diff] [blame]71void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
72 int);
73
Alistair Strachan603dd202018-12-19 15:37:41 -0800[diff] [blame]74/* file_xxx.c */
75extern int squashfs_readpage_block(struct page *, u64, int, int);
Phillip Lougher5f55dbc2013-10-31 19:24:27 +0000[diff] [blame]76
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]77/* id.c */
78extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
Phillip Lougher37986f62011-05-24 04:05:22 +0100[diff] [blame]79extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]87/* xattr.c */
88extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
89
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]90/*
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]91 * Inodes, files, decompressor and xattr operations
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]103/* inode.c */
104extern const struct inode_operations squashfs_inode_ops;
105
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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;
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]111extern const struct inode_operations squashfs_symlink_inode_ops;
112
113/* xattr.c */
Phillip Lougherf6db25a2010-05-23 03:29:26 +0100[diff] [blame]114extern const struct xattr_handler *squashfs_xattr_handlers[];