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Merge pull request #2308 from terrelln/zstd-kernel

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[contrib][linux-kernel] Add decompress_sources.h
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Nick Terrell 2020-09-14 14:56:30 -07:00 committed by GitHub
commit d96e98cfde
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4 changed files with 74 additions and 1 deletions
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1
contrib/linux-kernel/Makefile
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@ -49,6 +49,7 @@ libzstd:
mv linux/lib/zstd/common/zstd_errors.h linux/include/linux
cp zstd_compress_module.c linux/lib/zstd
cp zstd_decompress_module.c linux/lib/zstd
cp decompress_sources.h linux/lib/zstd
cp linux.mk linux/lib/zstd/Makefile
LINUX ?= $(HOME)/repos/linux

18
contrib/linux-kernel/decompress_sources.h Normal file
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@ -0,0 +1,18 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* This file includes every .c file needed for decompression.
* It is used by lib/decompress_unzstd.c to include the decompression
* source into the translation-unit, so it can be used for kernel
* decompression.
*/
#include "common/debug.c"
#include "common/entropy_common.c"
#include "common/error_private.c"
#include "common/fse_decompress.c"
#include "common/zstd_common.c"
#include "decompress/huf_decompress.c"
#include "decompress/zstd_ddict.c"
#include "decompress/zstd_decompress.c"
#include "decompress/zstd_decompress_block.c"

6
contrib/linux-kernel/test/Makefile
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@ -18,9 +18,13 @@ liblinuxzstd.a: $(LINUX_ZSTD_OBJECTS)
test: test.c liblinuxzstd.a
$(CC) $(LDFLAGS) $(CPPFLAGS) $(CFLAGS) $^ -o $@
run-test: test
static_test: static_test.c
$(CC) $(LDFLAGS) $(CPPFLAGS) $(CFLAGS) $^ -o $@
run-test: test static_test
./macro-test.sh
./test
./static_test
.PHONY:
clean:

50
contrib/linux-kernel/test/static_test.c Normal file
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@ -0,0 +1,50 @@
/*
* Copyright (c) 2020, 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 <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "decompress_sources.h"
#include <linux/zstd.h>
#define CONTROL(x) \
do { \
if (!(x)) { \
fprintf(stderr, "%s:%u: %s failed!\n", __FUNCTION__, __LINE__, #x); \
abort(); \
} \
} while (0)
static const char kEmptyZstdFrame[] = {
0x28, 0xb5, 0x2f, 0xfd, 0x24, 0x00, 0x01, 0x00, 0x00, 0x99, 0xe9, 0xd8, 0x51
};
static void test_decompress_unzstd() {
fprintf(stderr, "Testing decompress unzstd... ");
{
size_t const wkspSize = ZSTD_estimateDCtxSize();
void* wksp = malloc(wkspSize);
CONTROL(wksp != NULL);
ZSTD_DCtx* dctx = ZSTD_initStaticDCtx(wksp, wkspSize);
CONTROL(dctx != NULL);
size_t const dSize = ZSTD_decompressDCtx(dctx, NULL, 0, kEmptyZstdFrame, sizeof(kEmptyZstdFrame));
CONTROL(!ZSTD_isError(dSize));
CONTROL(dSize == 0);
free(wksp);
}
fprintf(stderr, "Ok\n");
}
int main(void) {
test_decompress_unzstd();
return 0;
}