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467382ca03
After some header file cleanups to add missing include files, remove common.h from all files in the lib directory. This primarily means just dropping the line but in a few cases we need to add in other header files now. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2021 Google LLC
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*/
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#define LOG_CATEGORY LOGC_BOOT
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#include <abuf.h>
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#include <log.h>
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#include <malloc.h>
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#include <linux/errno.h>
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#include <linux/zstd.h>
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int zstd_decompress(struct abuf *in, struct abuf *out)
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{
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zstd_dctx *ctx;
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size_t wsize, len;
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void *workspace;
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int ret;
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wsize = zstd_dctx_workspace_bound();
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workspace = malloc(wsize);
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if (!workspace) {
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debug("%s: cannot allocate workspace of size %zu\n", __func__,
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wsize);
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return -ENOMEM;
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}
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ctx = zstd_init_dctx(workspace, wsize);
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if (!ctx) {
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log_err("%s: zstd_init_dctx() failed\n", __func__);
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ret = -EPERM;
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goto do_free;
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}
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/*
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* Find out how large the frame actually is, there may be junk at
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* the end of the frame that zstd_decompress_dctx() can't handle.
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*/
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len = zstd_find_frame_compressed_size(abuf_data(in), abuf_size(in));
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if (zstd_is_error(len)) {
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log_err("%s: failed to detect compressed size: %d\n", __func__,
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zstd_get_error_code(len));
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ret = -EINVAL;
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goto do_free;
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}
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len = zstd_decompress_dctx(ctx, abuf_data(out), abuf_size(out),
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abuf_data(in), len);
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if (zstd_is_error(len)) {
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log_err("%s: failed to decompress: %d\n", __func__,
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zstd_get_error_code(len));
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ret = -EINVAL;
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goto do_free;
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}
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ret = len;
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do_free:
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free(workspace);
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return ret;
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}
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