1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3- 1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /* 2 /*
3 * Copyright (c) Facebook, Inc. 3 * Copyright (c) Facebook, Inc.
4 * All rights reserved. 4 * All rights reserved.
5 * 5 *
6 * This source code is licensed under both the 6 * This source code is licensed under both the BSD-style license (found in the
7 * LICENSE file in the root directory of this 7 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
8 * in the COPYING file in the root directory o 8 * in the COPYING file in the root directory of this source tree).
9 * You may select, at your option, one of the 9 * You may select, at your option, one of the above-listed licenses.
10 */ 10 */
11 11
12 #include <linux/kernel.h> 12 #include <linux/kernel.h>
13 #include <linux/module.h> 13 #include <linux/module.h>
14 #include <linux/string.h> 14 #include <linux/string.h>
15 #include <linux/zstd.h> 15 #include <linux/zstd.h>
16 16
17 #include "common/zstd_deps.h" 17 #include "common/zstd_deps.h"
18 18
19 /* Common symbols. zstd_compress must depend o 19 /* Common symbols. zstd_compress must depend on zstd_decompress. */
20 20
21 unsigned int zstd_is_error(size_t code) 21 unsigned int zstd_is_error(size_t code)
22 { 22 {
23 return ZSTD_isError(code); 23 return ZSTD_isError(code);
24 } 24 }
25 EXPORT_SYMBOL(zstd_is_error); 25 EXPORT_SYMBOL(zstd_is_error);
26 26
27 zstd_error_code zstd_get_error_code(size_t cod 27 zstd_error_code zstd_get_error_code(size_t code)
28 { 28 {
29 return ZSTD_getErrorCode(code); 29 return ZSTD_getErrorCode(code);
30 } 30 }
31 EXPORT_SYMBOL(zstd_get_error_code); 31 EXPORT_SYMBOL(zstd_get_error_code);
32 32
33 const char *zstd_get_error_name(size_t code) 33 const char *zstd_get_error_name(size_t code)
34 { 34 {
35 return ZSTD_getErrorName(code); 35 return ZSTD_getErrorName(code);
36 } 36 }
37 EXPORT_SYMBOL(zstd_get_error_name); 37 EXPORT_SYMBOL(zstd_get_error_name);
38 38
39 /* Decompression symbols. */ 39 /* Decompression symbols. */
40 40
41 size_t zstd_dctx_workspace_bound(void) 41 size_t zstd_dctx_workspace_bound(void)
42 { 42 {
43 return ZSTD_estimateDCtxSize(); 43 return ZSTD_estimateDCtxSize();
44 } 44 }
45 EXPORT_SYMBOL(zstd_dctx_workspace_bound); 45 EXPORT_SYMBOL(zstd_dctx_workspace_bound);
46 46
47 zstd_dctx *zstd_create_dctx_advanced(zstd_cust 47 zstd_dctx *zstd_create_dctx_advanced(zstd_custom_mem custom_mem)
48 { 48 {
49 return ZSTD_createDCtx_advanced(custom 49 return ZSTD_createDCtx_advanced(custom_mem);
50 } 50 }
51 EXPORT_SYMBOL(zstd_create_dctx_advanced); 51 EXPORT_SYMBOL(zstd_create_dctx_advanced);
52 52
53 size_t zstd_free_dctx(zstd_dctx *dctx) 53 size_t zstd_free_dctx(zstd_dctx *dctx)
54 { 54 {
55 return ZSTD_freeDCtx(dctx); 55 return ZSTD_freeDCtx(dctx);
56 } 56 }
57 EXPORT_SYMBOL(zstd_free_dctx); 57 EXPORT_SYMBOL(zstd_free_dctx);
58 58
59 zstd_ddict *zstd_create_ddict_byreference(cons 59 zstd_ddict *zstd_create_ddict_byreference(const void *dict, size_t dict_size,
60 zstd 60 zstd_custom_mem custom_mem)
61 { 61 {
62 return ZSTD_createDDict_advanced(dict, 62 return ZSTD_createDDict_advanced(dict, dict_size, ZSTD_dlm_byRef,
63 ZSTD_ 63 ZSTD_dct_auto, custom_mem);
64 64
65 } 65 }
66 EXPORT_SYMBOL(zstd_create_ddict_byreference); 66 EXPORT_SYMBOL(zstd_create_ddict_byreference);
67 67
68 size_t zstd_free_ddict(zstd_ddict *ddict) 68 size_t zstd_free_ddict(zstd_ddict *ddict)
69 { 69 {
70 return ZSTD_freeDDict(ddict); 70 return ZSTD_freeDDict(ddict);
71 } 71 }
72 EXPORT_SYMBOL(zstd_free_ddict); 72 EXPORT_SYMBOL(zstd_free_ddict);
73 73
74 zstd_dctx *zstd_init_dctx(void *workspace, siz 74 zstd_dctx *zstd_init_dctx(void *workspace, size_t workspace_size)
75 { 75 {
76 if (workspace == NULL) 76 if (workspace == NULL)
77 return NULL; 77 return NULL;
78 return ZSTD_initStaticDCtx(workspace, 78 return ZSTD_initStaticDCtx(workspace, workspace_size);
79 } 79 }
80 EXPORT_SYMBOL(zstd_init_dctx); 80 EXPORT_SYMBOL(zstd_init_dctx);
81 81
82 size_t zstd_decompress_dctx(zstd_dctx *dctx, v 82 size_t zstd_decompress_dctx(zstd_dctx *dctx, void *dst, size_t dst_capacity,
83 const void *src, size_t src_size) 83 const void *src, size_t src_size)
84 { 84 {
85 return ZSTD_decompressDCtx(dctx, dst, 85 return ZSTD_decompressDCtx(dctx, dst, dst_capacity, src, src_size);
86 } 86 }
87 EXPORT_SYMBOL(zstd_decompress_dctx); 87 EXPORT_SYMBOL(zstd_decompress_dctx);
88 88
89 size_t zstd_decompress_using_ddict(zstd_dctx * 89 size_t zstd_decompress_using_ddict(zstd_dctx *dctx,
90 void *dst, size_t dst_capacity, const 90 void *dst, size_t dst_capacity, const void* src, size_t src_size,
91 const zstd_ddict* ddict) 91 const zstd_ddict* ddict)
92 { 92 {
93 return ZSTD_decompress_usingDDict(dctx 93 return ZSTD_decompress_usingDDict(dctx, dst, dst_capacity, src,
94 src_ 94 src_size, ddict);
95 } 95 }
96 EXPORT_SYMBOL(zstd_decompress_using_ddict); 96 EXPORT_SYMBOL(zstd_decompress_using_ddict);
97 97
98 size_t zstd_dstream_workspace_bound(size_t max 98 size_t zstd_dstream_workspace_bound(size_t max_window_size)
99 { 99 {
100 return ZSTD_estimateDStreamSize(max_wi 100 return ZSTD_estimateDStreamSize(max_window_size);
101 } 101 }
102 EXPORT_SYMBOL(zstd_dstream_workspace_bound); 102 EXPORT_SYMBOL(zstd_dstream_workspace_bound);
103 103
104 zstd_dstream *zstd_init_dstream(size_t max_win 104 zstd_dstream *zstd_init_dstream(size_t max_window_size, void *workspace,
105 size_t workspace_size) 105 size_t workspace_size)
106 { 106 {
107 if (workspace == NULL) 107 if (workspace == NULL)
108 return NULL; 108 return NULL;
109 (void)max_window_size; 109 (void)max_window_size;
110 return ZSTD_initStaticDStream(workspac 110 return ZSTD_initStaticDStream(workspace, workspace_size);
111 } 111 }
112 EXPORT_SYMBOL(zstd_init_dstream); 112 EXPORT_SYMBOL(zstd_init_dstream);
113 113
114 size_t zstd_reset_dstream(zstd_dstream *dstrea 114 size_t zstd_reset_dstream(zstd_dstream *dstream)
115 { 115 {
116 return ZSTD_resetDStream(dstream); 116 return ZSTD_resetDStream(dstream);
117 } 117 }
118 EXPORT_SYMBOL(zstd_reset_dstream); 118 EXPORT_SYMBOL(zstd_reset_dstream);
119 119
120 size_t zstd_decompress_stream(zstd_dstream *ds 120 size_t zstd_decompress_stream(zstd_dstream *dstream, zstd_out_buffer *output,
121 zstd_in_buffer *input) 121 zstd_in_buffer *input)
122 { 122 {
123 return ZSTD_decompressStream(dstream, 123 return ZSTD_decompressStream(dstream, output, input);
124 } 124 }
125 EXPORT_SYMBOL(zstd_decompress_stream); 125 EXPORT_SYMBOL(zstd_decompress_stream);
126 126
127 size_t zstd_find_frame_compressed_size(const v 127 size_t zstd_find_frame_compressed_size(const void *src, size_t src_size)
128 { 128 {
129 return ZSTD_findFrameCompressedSize(sr 129 return ZSTD_findFrameCompressedSize(src, src_size);
130 } 130 }
131 EXPORT_SYMBOL(zstd_find_frame_compressed_size) 131 EXPORT_SYMBOL(zstd_find_frame_compressed_size);
132 132
133 size_t zstd_get_frame_header(zstd_frame_header 133 size_t zstd_get_frame_header(zstd_frame_header *header, const void *src,
134 size_t src_size) 134 size_t src_size)
135 { 135 {
136 return ZSTD_getFrameHeader(header, src 136 return ZSTD_getFrameHeader(header, src, src_size);
137 } 137 }
138 EXPORT_SYMBOL(zstd_get_frame_header); 138 EXPORT_SYMBOL(zstd_get_frame_header);
139 139
140 MODULE_LICENSE("Dual BSD/GPL"); 140 MODULE_LICENSE("Dual BSD/GPL");
141 MODULE_DESCRIPTION("Zstd Decompressor"); 141 MODULE_DESCRIPTION("Zstd Decompressor");
142 142
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