erasure_internal.h

Go to the documentation of this file.

/*
 * This file is part of the Aaru Data Preservation Suite.
 * Copyright (c) 2019-2026 Natalia Portillo.
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef LIBAARUFORMAT_ERASURE_INTERNAL_H
#define LIBAARUFORMAT_ERASURE_INTERNAL_H
 
#include "aaruformat/context.h"
#include "aaruformat/structs/data.h"
 
/* ---- Write path ---- */
 
void ec_accumulate_data_block(aaruformat_context *ctx, const BlockHeader *block_header, const uint8_t *lzma_props,
                              const uint8_t *payload, uint32_t payload_size, uint64_t file_offset);
 
void ec_flush_data_stripe(aaruformat_context *ctx, uint32_t slot);
 
void ec_finalize(aaruformat_context *ctx);
 
/* ---- Read path ---- */

void ec_load_ecmb(aaruformat_context *ctx);

int32_t ec_recover_data_block(aaruformat_context *ctx, uint64_t block_offset, uint64_t offset,
                              uint8_t *data, uint32_t *length, uint8_t sector_status);

int32_t ec_recover_raw_block(aaruformat_context *ctx, uint64_t block_offset,
                             uint8_t **recovered_data, uint32_t *recovered_size,
                             void *stripes, uint32_t stripe_count, void *lookup,
                             uint16_t group_K, uint16_t group_M, uint32_t group_shard_size);

int32_t ec_recover_meta_block(aaruformat_context *ctx, uint64_t block_offset,
                              uint8_t **recovered_data, uint32_t *recovered_size);

int32_t ec_recover_ddt_block(aaruformat_context *ctx, uint64_t block_offset,
                             uint8_t **recovered_data, uint32_t *recovered_size);
 
/* ---- Cleanup ---- */
 
void ec_free(aaruformat_context *ctx);
 
#endif /* LIBAARUFORMAT_ERASURE_INTERNAL_H */