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// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/zstd.h>
#include "common/zstd_deps.h"
/* Common symbols. zstd_compress must depend on zstd_decompress. */
unsigned int zstd_is_error(size_t code)
{
return ZSTD_isError(code);
}
EXPORT_SYMBOL(zstd_is_error);
zstd_error_code zstd_get_error_code(size_t code)
{
return ZSTD_getErrorCode(code);
}
EXPORT_SYMBOL(zstd_get_error_code);
const char *zstd_get_error_name(size_t code)
{
return ZSTD_getErrorName(code);
}
EXPORT_SYMBOL(zstd_get_error_name);
/* Decompression symbols. */
size_t zstd_dctx_workspace_bound(void)
{
return ZSTD_estimateDCtxSize();
}
EXPORT_SYMBOL(zstd_dctx_workspace_bound);
zstd_dctx *zstd_create_dctx_advanced(zstd_custom_mem custom_mem)
{
return ZSTD_createDCtx_advanced(custom_mem);
}
EXPORT_SYMBOL(zstd_create_dctx_advanced);
size_t zstd_free_dctx(zstd_dctx *dctx)
{
return ZSTD_freeDCtx(dctx);
}
EXPORT_SYMBOL(zstd_free_dctx);
zstd_ddict *zstd_create_ddict_byreference(const void *dict, size_t dict_size,
zstd_custom_mem custom_mem)
{
return ZSTD_createDDict_advanced(dict, dict_size, ZSTD_dlm_byRef,
ZSTD_dct_auto, custom_mem);
}
EXPORT_SYMBOL(zstd_create_ddict_byreference);
size_t zstd_free_ddict(zstd_ddict *ddict)
{
return ZSTD_freeDDict(ddict);
}
EXPORT_SYMBOL(zstd_free_ddict);
zstd_dctx *zstd_init_dctx(void *workspace, size_t workspace_size)
{
if (workspace == NULL)
return NULL;
return ZSTD_initStaticDCtx(workspace, workspace_size);
}
EXPORT_SYMBOL(zstd_init_dctx);
size_t zstd_decompress_dctx(zstd_dctx *dctx, void *dst, size_t dst_capacity,
const void *src, size_t src_size)
{
return ZSTD_decompressDCtx(dctx, dst, dst_capacity, src, src_size);
}
EXPORT_SYMBOL(zstd_decompress_dctx);
size_t zstd_decompress_using_ddict(zstd_dctx *dctx,
void *dst, size_t dst_capacity, const void* src, size_t src_size,
const zstd_ddict* ddict)
{
return ZSTD_decompress_usingDDict(dctx, dst, dst_capacity, src,
src_size, ddict);
}
EXPORT_SYMBOL(zstd_decompress_using_ddict);
size_t zstd_dstream_workspace_bound(size_t max_window_size)
{
return ZSTD_estimateDStreamSize(max_window_size);
}
EXPORT_SYMBOL(zstd_dstream_workspace_bound);
zstd_dstream *zstd_init_dstream(size_t max_window_size, void *workspace,
size_t workspace_size)
{
if (workspace == NULL)
return NULL;
(void)max_window_size;
return ZSTD_initStaticDStream(workspace, workspace_size);
}
EXPORT_SYMBOL(zstd_init_dstream);
size_t zstd_reset_dstream(zstd_dstream *dstream)
{
return ZSTD_resetDStream(dstream);
}
EXPORT_SYMBOL(zstd_reset_dstream);
size_t zstd_decompress_stream(zstd_dstream *dstream, zstd_out_buffer *output,
zstd_in_buffer *input)
{
return ZSTD_decompressStream(dstream, output, input);
}
EXPORT_SYMBOL(zstd_decompress_stream);
size_t zstd_find_frame_compressed_size(const void *src, size_t src_size)
{
return ZSTD_findFrameCompressedSize(src, src_size);
}
EXPORT_SYMBOL(zstd_find_frame_compressed_size);
size_t zstd_get_frame_header(zstd_frame_header *header, const void *src,
size_t src_size)
{
return ZSTD_getFrameHeader(header, src, src_size);
}
EXPORT_SYMBOL(zstd_get_frame_header);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Zstd Decompressor");
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