mirror of
https://github.com/DarkStore-3DS/Project_CTR.git
synced 2026-07-03 00:39:14 +00:00
jakcron
70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
#pragma once
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#include <tc/types.h>
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namespace ntd { namespace n3ds {
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#pragma pack(push,1)
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struct IvfcHeader
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{
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static const uint32_t kStructMagic = tc::bn::make_struct_magic_uint32("IVFC");
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enum TypeId : uint32_t
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{
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TypeId_A = 0x10000, // CTR RomFS
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TypeId_B = 0x20000, // CTR SaveData
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};
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tc::bn::le32<uint32_t> struct_magic;
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tc::bn::le32<TypeId> type_id;
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};
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static_assert(sizeof(IvfcHeader) == 0x8, "IvfcHeader had invalid size");
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struct IvfcLevelEntry
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{
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tc::bn::le64<uint64_t> offset;
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tc::bn::le64<uint64_t> size;
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tc::bn::le32<uint32_t> block_size_log2;
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tc::bn::pad<4> reserved;
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};
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static_assert(sizeof(IvfcLevelEntry) == 0x18, "IvfcLevelEntry had invalid size");
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/**
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* @struct IvfcCtrRomfsHeader
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* @details
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* IVFC for CTR uses 4 levels (1 master, 3 auxillary)
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*
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* * The master level follows the IvfcCtrRomfsHeader aligned to 0x10 bytes (0x60 bytes total), for head.master_hash_size bytes, validating aux level 0
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* * Aux level 0 validates aux level 1
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* * Aux level 1 validates aux level 2
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* * Aux level 2 is RomFS data
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*/
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struct IvfcCtrRomfsHeader
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{
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static const size_t kLevelNum = 3;
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static const size_t kHeaderAlign = 0x10;
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static const size_t kDefaultRomFsBlockSize = 0x1000;
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IvfcHeader head;
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tc::bn::le32<uint32_t> master_hash_size;
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std::array<IvfcLevelEntry, kLevelNum> level;
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tc::bn::le32<uint32_t> header_size; // header_size == 0x5c
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tc::bn::pad<4> reserved;
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};
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static_assert(sizeof(IvfcCtrRomfsHeader) == 0x5C, "IvfcCtrRomfsHeader had invalid size");
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struct IvfcCtrSavedataHeader
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{
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static const size_t kLevelNum = 4;
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IvfcHeader head;
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tc::bn::le64<uint64_t> master_hash_size;
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std::array<IvfcLevelEntry, kLevelNum> level;
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tc::bn::le32<uint32_t> header_size; // header_size == 0x78
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std::array<byte_t, 4> reserved;
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};
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static_assert(sizeof(IvfcCtrSavedataHeader) == 0x78, "IvfcCtrSavedataHeader had invalid size");
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#pragma pack(pop)
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}} // namespace ntd::n3ds
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