1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
3 * Copyright (c) Facebook, Inc.
6 * This source code is licensed under both the BSD-style license (found in the
7 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
8 * in the COPYING file in the root directory of this source tree).
9 * You may select, at your option, one of the above-listed licenses.
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/string.h>
15 #include <linux/zstd.h>
17 /* Common symbols. zstd_compress must depend on zstd_decompress. */
19 unsigned int zstd_is_error(size_t code)
21 return ZSTD_isError(code);
23 EXPORT_SYMBOL(zstd_is_error);
25 zstd_error_code zstd_get_error_code(size_t code)
27 return ZSTD_getErrorCode(code);
29 EXPORT_SYMBOL(zstd_get_error_code);
31 const char *zstd_get_error_name(size_t code)
33 return ZSTD_getErrorName(code);
35 EXPORT_SYMBOL(zstd_get_error_name);
37 /* Decompression symbols. */
39 size_t zstd_dctx_workspace_bound(void)
41 return ZSTD_estimateDCtxSize();
43 EXPORT_SYMBOL(zstd_dctx_workspace_bound);
45 zstd_dctx *zstd_init_dctx(void *workspace, size_t workspace_size)
47 if (workspace == NULL)
49 return ZSTD_initStaticDCtx(workspace, workspace_size);
51 EXPORT_SYMBOL(zstd_init_dctx);
53 size_t zstd_decompress_dctx(zstd_dctx *dctx, void *dst, size_t dst_capacity,
54 const void *src, size_t src_size)
56 return ZSTD_decompressDCtx(dctx, dst, dst_capacity, src, src_size);
58 EXPORT_SYMBOL(zstd_decompress_dctx);
60 size_t zstd_dstream_workspace_bound(size_t max_window_size)
62 return ZSTD_estimateDStreamSize(max_window_size);
64 EXPORT_SYMBOL(zstd_dstream_workspace_bound);
66 zstd_dstream *zstd_init_dstream(size_t max_window_size, void *workspace,
67 size_t workspace_size)
69 if (workspace == NULL)
71 (void)max_window_size;
72 return ZSTD_initStaticDStream(workspace, workspace_size);
74 EXPORT_SYMBOL(zstd_init_dstream);
76 size_t zstd_reset_dstream(zstd_dstream *dstream)
78 return ZSTD_resetDStream(dstream);
80 EXPORT_SYMBOL(zstd_reset_dstream);
82 size_t zstd_decompress_stream(zstd_dstream *dstream, zstd_out_buffer *output,
83 zstd_in_buffer *input)
85 return ZSTD_decompressStream(dstream, output, input);
87 EXPORT_SYMBOL(zstd_decompress_stream);
89 size_t zstd_find_frame_compressed_size(const void *src, size_t src_size)
91 return ZSTD_findFrameCompressedSize(src, src_size);
93 EXPORT_SYMBOL(zstd_find_frame_compressed_size);
95 size_t zstd_get_frame_header(zstd_frame_header *header, const void *src,
98 return ZSTD_getFrameHeader(header, src, src_size);
100 EXPORT_SYMBOL(zstd_get_frame_header);
102 MODULE_LICENSE("Dual BSD/GPL");
103 MODULE_DESCRIPTION("Zstd Decompressor");