83 lines
3.4 KiB
C
83 lines
3.4 KiB
C
/*
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* Copyright 2014, Kevin Greenan, Tushar Gohad, All rights reserved
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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 proprocssing helpers header
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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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#ifndef _ERASURECODE_HELPERS_EXT_H_
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#define _ERASURECODE_HELPERS_EXT_H_
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#include "erasurecode_backend.h"
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#include "erasurecode_helpers.h"
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/* ==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~== */
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static inline
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void init_fragment_header(char *buf)
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{
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fragment_header_t *header = (fragment_header_t *) buf;
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header->magic = LIBERASURECODE_FRAG_HEADER_MAGIC;
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}
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/* ==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~== */
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char *alloc_fragment_buffer(int size);
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int free_fragment_buffer(char *buf);
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int get_aligned_data_size(ec_backend_t instance, int data_len);
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char *get_data_ptr_from_fragment(char *buf);
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int get_data_ptr_array_from_fragments(char **data_array, char **fragments,
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int num_fragments);
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int get_fragment_ptr_array_from_data(char **frag_array, char **data,
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int num_data);
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char *get_fragment_ptr_from_data_novalidate(char *buf);
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char *get_fragment_ptr_from_data(char *buf);
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uint64_t get_fragment_size(char *buf);
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int set_fragment_idx(char *buf, int idx);
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int get_fragment_idx(char *buf);
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int set_fragment_payload_size(char *buf, int size);
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int get_fragment_payload_size(char *buf);
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int set_fragment_backend_metadata_size(char *buf, int size);
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int get_fragment_backend_metadata_size(char *buf);
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int get_fragment_buffer_size(char *buf);
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int set_orig_data_size(char *buf, int orig_data_size);
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int get_orig_data_size(char *buf);
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int set_checksum(ec_checksum_type_t ct, char *buf, int blocksize);
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int get_checksum(char *buf);
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int set_libec_version(char *fragment);
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int get_libec_version(char *fragment, uint32_t *ver);
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int set_backend_id(char *buf, ec_backend_id_t id);
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int get_backend_id(char *buf, ec_backend_id_t *id);
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int set_backend_version(char *buf, uint32_t version);
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int get_backend_version(char *buf, uint32_t *version);
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int set_metadata_chksum(char *buf);
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uint32_t *get_metadata_chksum(char *buf);
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int is_invalid_fragment_header(fragment_header_t *header);
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/* ==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~==~=*=~== */
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#endif // _ERASURECODE_HELPERS_EXT_H_
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