mirror of
https://github.com/Decscots/Lockpick_RCM.git
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242 lines
9.7 KiB
C
242 lines
9.7 KiB
C
/*
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* Copyright (c) 2019-2020 shchmue
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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ISC License
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hactool Copyright (c) 2018, SciresM
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "storage.h"
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#include "cached_storage.h"
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#include "hierarchical_duplex_storage.h"
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#include "hierarchical_integrity_verification_storage.h"
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#include "journal_storage.h"
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#include "remap_storage.h"
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#include <gfx_utils.h>
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#include <libs/fatfs/ff.h>
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#include <string.h>
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void storage_init(storage *this, const storage_vt *vt, void *ctx) {
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this->vt = vt;
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this->ctx = ctx;
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}
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void substorage_init(substorage *this, const storage_vt *vt, void *ctx, uint64_t offset, uint64_t length) {
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storage_init(&this->base_storage, vt, ctx);
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this->offset = offset;
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this->length = length;
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}
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bool substorage_init_from_other(substorage *this, const substorage *other, uint64_t offset, uint64_t length) {
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if (offset + length > other->length) {
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EPRINTF("Invalid size for substorage init!");
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EPRINTFARGS("ofs %x len %x size %x", (uint32_t)offset, (uint32_t)length, (uint32_t)other->length);
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return false;
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}
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substorage_init(this, other->base_storage.vt, other->base_storage.ctx, other->offset + offset, length);
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return true;
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}
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void sector_storage_init(sector_storage *ctx, substorage *base_storage, uint32_t sector_size) {
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memcpy(&ctx->base_storage, base_storage, sizeof(substorage));
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ctx->sector_size = sector_size;
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ctx->length = base_storage->length;
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ctx->sector_count = (uint32_t)(DIV_ROUND_UP(ctx->length, ctx->sector_size));
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}
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uint32_t sector_storage_read(sector_storage *ctx, void *buffer, uint64_t offset, uint64_t count) {
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uint64_t remaining = count;
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uint64_t in_offset = offset;
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uint32_t out_offset = 0;
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uint32_t sector_size = ctx->sector_size;
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while (remaining) {
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uint32_t sector_pos = (uint32_t)(in_offset % sector_size);
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uint32_t bytes_to_read = MIN((uint32_t)remaining, (uint32_t)(sector_size - sector_pos));
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substorage_read(&ctx->base_storage, (uint8_t *)buffer + out_offset, in_offset, bytes_to_read);
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out_offset += bytes_to_read;
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in_offset += bytes_to_read;
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remaining -= bytes_to_read;
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}
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return out_offset;
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}
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uint32_t sector_storage_write(sector_storage *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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uint64_t remaining = count;
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uint64_t in_offset = offset;
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uint32_t out_offset = 0;
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uint32_t sector_size = ctx->sector_size;
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while (remaining) {
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uint32_t sector_pos = (uint32_t)(in_offset % sector_size);
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uint32_t bytes_to_write = MIN((uint32_t)remaining, (uint32_t)(sector_size - sector_pos));
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substorage_write(&ctx->base_storage, (uint8_t *)buffer + out_offset, in_offset, bytes_to_write);
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out_offset += bytes_to_write;
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in_offset += bytes_to_write;
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remaining -= bytes_to_write;
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}
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return out_offset;
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}
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uint32_t save_hierarchical_integrity_verification_storage_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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hierarchical_integrity_verification_storage_ctx_t *storage = (hierarchical_integrity_verification_storage_ctx_t *)ctx;
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return save_cached_storage_read(storage->data_level, buffer, offset, count);
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}
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uint32_t save_hierarchical_integrity_verification_storage_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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hierarchical_integrity_verification_storage_ctx_t *storage = (hierarchical_integrity_verification_storage_ctx_t *)ctx;
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return save_cached_storage_write(storage->data_level, buffer, offset, count);
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}
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void save_hierarchical_integrity_verification_storage_get_size_wrapper(void *ctx, uint64_t *out_size) {
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hierarchical_integrity_verification_storage_ctx_t *storage = (hierarchical_integrity_verification_storage_ctx_t *)ctx;
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*out_size = storage->length;
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}
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uint32_t memory_storage_read(uint8_t *storage, void *buffer, uint64_t offset, uint64_t count) {
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memcpy(buffer, storage + offset, count);
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return count;
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}
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uint32_t memory_storage_write(uint8_t *storage, const void *buffer, uint64_t offset, uint64_t count) {
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memcpy(storage + offset, buffer, count);
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return count;
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}
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uint32_t memory_storage_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return memory_storage_read((uint8_t *)ctx, buffer, offset, count);
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}
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uint32_t memory_storage_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return memory_storage_write((uint8_t *)ctx, buffer, offset, count);
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}
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uint32_t save_file_read(FIL *fp, void *buffer, uint64_t offset, uint64_t count) {
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UINT bytes_read = 0;
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if (f_lseek(fp, offset) || f_read(fp, buffer, count, &bytes_read) || bytes_read != count) {
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EPRINTFARGS("Failed to read file at offset %x!\nRead %x bytes. Req %x bytes.", (uint32_t)offset, bytes_read, (uint32_t)count);
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return 0;
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}
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return bytes_read;
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}
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uint32_t save_file_write(FIL *fp, const void *buffer, uint64_t offset, uint64_t count) {
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UINT bytes_written = 0;
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if (f_lseek(fp, offset) || f_write(fp, buffer, count, &bytes_written) || bytes_written != count) {
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EPRINTFARGS("Failed to write file at offset %x!", (uint32_t)offset);
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return 0;
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}
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return bytes_written;
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}
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void save_file_get_size(FIL *fp, uint64_t *out_size) {
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*out_size = f_size(fp);
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}
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uint32_t save_file_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return save_file_read((FIL *)ctx, buffer, offset, count);
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}
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uint32_t save_file_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return save_file_write((FIL *)ctx, buffer, offset, count);
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}
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void save_file_get_size_wrapper(void *ctx, uint64_t *out_size) {
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save_file_get_size((FIL *)ctx, out_size);
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}
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uint32_t save_remap_storage_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return save_remap_storage_read((remap_storage_ctx_t *)ctx, buffer, offset, count);
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}
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uint32_t save_remap_storage_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return save_remap_storage_write((remap_storage_ctx_t *)ctx, buffer, offset, count);
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}
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void save_remap_storage_get_size_wrapper(__attribute__((unused)) void *ctx, uint64_t *out_size) {
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*out_size = -1;
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}
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uint32_t save_journal_storage_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return save_journal_storage_read((journal_storage_ctx_t *)ctx, buffer, offset, count);
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}
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uint32_t save_journal_storage_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return save_journal_storage_write((journal_storage_ctx_t *)ctx, buffer, offset, count);
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}
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void save_journal_storage_get_size_wrapper(void *ctx, uint64_t *out_size) {
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journal_storage_ctx_t *journal = (journal_storage_ctx_t *)ctx;
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*out_size = journal->length;
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}
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uint32_t save_ivfc_storage_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return save_ivfc_storage_read((integrity_verification_storage_ctx_t *)ctx, buffer, offset, count) ? count : 0;
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}
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uint32_t save_ivfc_storage_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return save_ivfc_storage_write((integrity_verification_storage_ctx_t *)ctx, buffer, offset, count) ? count : 0;
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}
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void save_ivfc_storage_get_size_wrapper(void *ctx, uint64_t *out_size) {
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integrity_verification_storage_ctx_t *ivfc = (integrity_verification_storage_ctx_t *)ctx;
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*out_size = ivfc->base_storage.length;
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}
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uint32_t save_hierarchical_duplex_storage_read(hierarchical_duplex_storage_ctx_t *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return save_duplex_storage_read(ctx->data_layer, buffer, offset, count);
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}
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uint32_t save_hierarchical_duplex_storage_write(hierarchical_duplex_storage_ctx_t *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return save_duplex_storage_write(ctx->data_layer, buffer, offset, count);
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}
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uint32_t save_hierarchical_duplex_storage_read_wrapper(void *ctx, void *buffer, uint64_t offset, uint64_t count) {
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return save_hierarchical_duplex_storage_read((hierarchical_duplex_storage_ctx_t *)ctx, buffer, offset, count);
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}
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uint32_t save_hierarchical_duplex_storage_write_wrapper(void *ctx, const void *buffer, uint64_t offset, uint64_t count) {
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return save_hierarchical_duplex_storage_write((hierarchical_duplex_storage_ctx_t *)ctx, buffer, offset, count);
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}
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void save_hierarchical_duplex_storage_get_size_wrapper(void *ctx, uint64_t *out_size) {
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hierarchical_duplex_storage_ctx_t *duplex = (hierarchical_duplex_storage_ctx_t *)ctx;
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*out_size = duplex->_length;
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}
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