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gerrit-public.fairphone.software / kernel / msm-4.9 / ba102138349fc048b98cf6af00f31fe664747747 / . / fs / squashfs / squashfs.h
blob: f4faab52a879009074586838d7c55fa519a5d202 [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 */
Adrien Schildknecht6c8928f2016-10-17 18:22:32 -0700[diff] [blame]31extern int squashfs_init_read_wq(void);
32extern void squashfs_destroy_read_wq(void);
Phillip Lougher846b7302013-11-18 02:59:12 +0000[diff] [blame]33extern int squashfs_read_data(struct super_block *, u64, int, u64 *,
34 struct squashfs_page_actor *);
Adrien Schildknecht6c8928f2016-10-17 18:22:32 -0700[diff] [blame]35extern int squashfs_read_data_async(struct super_block *, u64, int, u64 *,
36 struct squashfs_page_actor *);
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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);
Phillip Lougher82de6472011-05-20 02:26:43 +0100[diff] [blame]51extern void *squashfs_read_table(struct super_block *, u64, int);
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]52
Phillip Lougher4c0f0bb2009-10-06 04:04:15 +0100[diff] [blame]53/* decompressor.c */
54extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
Phillip Lougher9508c6b2013-11-13 02:56:26 +0000[diff] [blame]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 *);
Phillip Lougher846b7302013-11-18 02:59:12 +0000[diff] [blame]60extern int squashfs_decompress(struct squashfs_sb_info *, struct buffer_head **,
61 int, int, int, struct squashfs_page_actor *);
Phillip Lougher9508c6b2013-11-13 02:56:26 +0000[diff] [blame]62extern int squashfs_max_decompressors(void);
Phillip Lougher4c0f0bb2009-10-06 04:04:15 +0100[diff] [blame]63
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]64/* export.c */
Phillip Lougherac51a0a2011-05-24 04:15:21 +0100[diff] [blame]65extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]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 *,
Phillip Lougher1cac63c2011-05-24 04:33:34 +0100[diff] [blame]71 u64, u64, unsigned int);
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]72
Phillip Lougher5f55dbc2013-10-31 19:24:27 +0000[diff] [blame]73/* file.c */
74void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
75 int);
76
Adrien Schildknechtd840c1d2016-10-14 21:03:54 -0700[diff] [blame]77/* file_direct.c */
78extern int squashfs_readpages_block(struct page *, struct list_head *,
79 unsigned int *, struct address_space *, int, u64, int);
Phillip Lougher5f55dbc2013-10-31 19:24:27 +0000[diff] [blame]80
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]81/* id.c */
82extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
Phillip Lougher37986f62011-05-24 04:05:22 +0100[diff] [blame]83extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64,
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]84 unsigned short);
85
86/* inode.c */
87extern struct inode *squashfs_iget(struct super_block *, long long,
88 unsigned int);
89extern int squashfs_read_inode(struct inode *, long long);
90
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]91/* xattr.c */
92extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
93
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]94/*
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]95 * Inodes, files, decompressor and xattr operations
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]96 */
97
98/* dir.c */
99extern const struct file_operations squashfs_dir_ops;
100
101/* export.c */
102extern const struct export_operations squashfs_export_ops;
103
104/* file.c */
105extern const struct address_space_operations squashfs_aops;
106
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]107/* inode.c */
108extern const struct inode_operations squashfs_inode_ops;
109
Phillip Lougherffae2cd2009-01-05 08:46:27 +0000[diff] [blame]110/* namei.c */
111extern const struct inode_operations squashfs_dir_inode_ops;
112
113/* symlink.c */
114extern const struct address_space_operations squashfs_symlink_aops;
Phillip Lougher67f66cc2010-05-17 04:06:56 +0100[diff] [blame]115extern const struct inode_operations squashfs_symlink_inode_ops;
116
117/* xattr.c */
Phillip Lougherf6db25a2010-05-23 03:29:26 +0100[diff] [blame]118extern const struct xattr_handler *squashfs_xattr_handlers[];