1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef DECOMPRESSOR_H 2 #ifndef DECOMPRESSOR_H
3 #define DECOMPRESSOR_H 3 #define DECOMPRESSOR_H
4 /* 4 /*
5 * Squashfs - a compressed read only filesyste 5 * Squashfs - a compressed read only filesystem for Linux
6 * 6 *
7 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 7 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
8 * Phillip Lougher <phillip@squashfs.org.uk> 8 * Phillip Lougher <phillip@squashfs.org.uk>
9 * 9 *
10 * decompressor.h 10 * decompressor.h
11 */ 11 */
12 12
13 #include <linux/bio.h> 13 #include <linux/bio.h>
14 14
15 struct squashfs_decompressor { 15 struct squashfs_decompressor {
16 void *(*init)(struct squashfs_sb_in 16 void *(*init)(struct squashfs_sb_info *, void *);
17 void *(*comp_opts)(struct squashfs_ 17 void *(*comp_opts)(struct squashfs_sb_info *, void *, int);
18 void (*free)(void *); 18 void (*free)(void *);
19 int (*decompress)(struct squashfs_ 19 int (*decompress)(struct squashfs_sb_info *, void *,
20 struct bio *, int, int, struct 20 struct bio *, int, int, struct squashfs_page_actor *);
21 int id; 21 int id;
22 char *name; 22 char *name;
23 int alloc_buffer; <<
24 int supported; 23 int supported;
25 }; 24 };
26 25
27 static inline void *squashfs_comp_opts(struct 26 static inline void *squashfs_comp_opts(struct squashfs_sb_info *msblk,
28 27 void *buff, int length)
29 { 28 {
30 return msblk->decompressor->comp_opts 29 return msblk->decompressor->comp_opts ?
31 msblk->decompressor->comp_opts 30 msblk->decompressor->comp_opts(msblk, buff, length) : NULL;
32 } 31 }
33 32
34 #ifdef CONFIG_SQUASHFS_XZ 33 #ifdef CONFIG_SQUASHFS_XZ
35 extern const struct squashfs_decompressor squa 34 extern const struct squashfs_decompressor squashfs_xz_comp_ops;
36 #endif 35 #endif
37 36
38 #ifdef CONFIG_SQUASHFS_LZ4 37 #ifdef CONFIG_SQUASHFS_LZ4
39 extern const struct squashfs_decompressor squa 38 extern const struct squashfs_decompressor squashfs_lz4_comp_ops;
40 #endif 39 #endif
41 40
42 #ifdef CONFIG_SQUASHFS_LZO 41 #ifdef CONFIG_SQUASHFS_LZO
43 extern const struct squashfs_decompressor squa 42 extern const struct squashfs_decompressor squashfs_lzo_comp_ops;
44 #endif 43 #endif
45 44
46 #ifdef CONFIG_SQUASHFS_ZLIB 45 #ifdef CONFIG_SQUASHFS_ZLIB
47 extern const struct squashfs_decompressor squa 46 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
48 #endif 47 #endif
49 48
50 #ifdef CONFIG_SQUASHFS_ZSTD 49 #ifdef CONFIG_SQUASHFS_ZSTD
51 extern const struct squashfs_decompressor squa 50 extern const struct squashfs_decompressor squashfs_zstd_comp_ops;
52 #endif 51 #endif
53 52
54 #endif 53 #endif
55 54
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.