80 lines
3.2 KiB
C
80 lines
3.2 KiB
C
/*
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* Copyright 2014 Tushar Gohad, Kevin M Greenan, Eric Lambert
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY
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* THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* liberasurecode postprocessing helpers implementation
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*
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* vi: set noai tw=79 ts=4 sw=4:
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*/
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#include "erasurecode_backend.h"
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#include "erasurecode_helpers.h"
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#include "erasurecode_helpers_ext.h"
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#include "erasurecode_stdinc.h"
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void add_fragment_metadata(ec_backend_t be, char *fragment,
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int idx, uint64_t orig_data_size, int blocksize,
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ec_checksum_type_t ct, int add_chksum)
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{
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//TODO EDL we are ignoring the return codes here, fix that
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set_libec_version(fragment);
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set_fragment_idx(fragment, idx);
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set_orig_data_size(fragment, orig_data_size);
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set_fragment_payload_size(fragment, blocksize);
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set_backend_id(fragment, be->common.id);
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set_backend_version(fragment, be->common.ec_backend_version);
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set_fragment_backend_metadata_size(fragment, be->common.ops->get_backend_metadata_size(
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be->desc.backend_desc,
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blocksize));
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if (add_chksum) {
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set_checksum(ct, fragment, blocksize);
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}
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set_metadata_chksum(fragment);
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}
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int finalize_fragments_after_encode(ec_backend_t instance,
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int k, int m, int blocksize, uint64_t orig_data_size,
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char **encoded_data, char **encoded_parity)
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{
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int i, set_chksum = 1;
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ec_checksum_type_t ct = instance->args.uargs.ct;
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/* finalize data fragments */
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for (i = 0; i < k; i++) {
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char *fragment = get_fragment_ptr_from_data(encoded_data[i]);
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add_fragment_metadata(instance, fragment, i, orig_data_size,
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blocksize, ct, set_chksum);
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encoded_data[i] = fragment;
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}
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/* finalize parity fragments */
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for (i = 0; i < m; i++) {
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char *fragment = get_fragment_ptr_from_data(encoded_parity[i]);
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add_fragment_metadata(instance, fragment, i + k, orig_data_size,
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blocksize, ct, set_chksum);
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encoded_parity[i] = fragment;
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}
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return 0;
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}
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