mirror of
https://github.com/DarkMatterCore/nxdumptool.git
synced 2024-11-09 20:21:45 +00:00
83 lines
3.6 KiB
C
83 lines
3.6 KiB
C
/*
|
|
* nca_storage.h
|
|
*
|
|
* Copyright (c) 2020-2024, DarkMatterCore <pabloacurielz@gmail.com>.
|
|
*
|
|
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
|
|
*
|
|
* nxdumptool is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* nxdumptool 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifndef __NCA_STORAGE_H__
|
|
#define __NCA_STORAGE_H__
|
|
|
|
#include "bktr.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef enum {
|
|
NcaStorageBaseStorageType_Invalid = 0, ///< Placeholder.
|
|
NcaStorageBaseStorageType_Regular = 1,
|
|
NcaStorageBaseStorageType_Sparse = 2,
|
|
NcaStorageBaseStorageType_Indirect = 3,
|
|
NcaStorageBaseStorageType_Compressed = 4,
|
|
NcaStorageBaseStorageType_Count = 5 ///< Total values supported by this enum.
|
|
} NcaStorageBaseStorageType;
|
|
|
|
/// Used to perform multi-layered reads within a single NCA FS section.
|
|
typedef struct {
|
|
u8 base_storage_type; ///< NcaStorageBaseStorageType.
|
|
NcaFsSectionContext *nca_fs_ctx; ///< NCA FS section context used to initialize this context.
|
|
BucketTreeContext *sparse_storage; ///< Sparse storage context.
|
|
BucketTreeContext *aes_ctr_ex_storage; ///< AesCtrEx storage context.
|
|
BucketTreeContext *indirect_storage; ///< Indirect storage context.
|
|
BucketTreeContext *compressed_storage; ///< Compressed storage context.
|
|
} NcaStorageContext;
|
|
|
|
/// Initializes a NCA storage context using a NCA FS section context, optionally providing a pointer to a base NcaStorageContext.
|
|
/// 'base_ctx' shall be provided if dealing with a patch NCA with available base NCA data. This is needed to perform combined reads between a base NCA and a patch NCA.
|
|
/// 'base_ctx' shall be NULL if dealing with a base NCA *or* a patch NCA with missing base NCA data.
|
|
bool ncaStorageInitializeContext(NcaStorageContext *out, NcaFsSectionContext *nca_fs_ctx, NcaStorageContext *base_ctx);
|
|
|
|
/// Retrieves the underlying NCA FS section's hierarchical hash target layer extents. Virtual extents may be returned, depending on the base storage type.
|
|
/// Output offset is relative to the start of the NCA FS section.
|
|
/// Either 'out_offset' or 'out_size' can be NULL, but at least one of them must be a valid pointer.
|
|
bool ncaStorageGetHashTargetExtents(NcaStorageContext *ctx, u64 *out_offset, u64 *out_size);
|
|
|
|
/// Reads data from the NCA storage using a previously initialized NcaStorageContext.
|
|
bool ncaStorageRead(NcaStorageContext *ctx, void *out, u64 read_size, u64 offset);
|
|
|
|
/// Checks if the provided block extents are within the provided Patch NcaStorageContext's Indirect Storage.
|
|
bool ncaStorageIsBlockWithinPatchStorageRange(NcaStorageContext *ctx, u64 offset, u64 size, bool *out);
|
|
|
|
/// Frees a previously initialized NCA storage context.
|
|
void ncaStorageFreeContext(NcaStorageContext *ctx);
|
|
|
|
/// Helper inline functions.
|
|
|
|
NX_INLINE bool ncaStorageIsValidContext(NcaStorageContext *ctx)
|
|
{
|
|
return (ctx && ctx->base_storage_type >= NcaStorageBaseStorageType_Regular && ctx->base_storage_type <= NcaStorageBaseStorageType_Compressed && ctx->nca_fs_ctx && \
|
|
ctx->nca_fs_ctx->enabled);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __NCA_STORAGE_H__ */
|