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DiscIO: Improve DiscScrubber::ReadFromVolume error handling

This commit is contained in:
JosJuice 2015-10-22 21:43:22 +02:00
parent bd67333da9
commit cbfab2a754
1 changed files with 30 additions and 26 deletions
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56
Source/Core/DiscIO/DiscScrubber.cpp
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@ -74,8 +74,8 @@ static SPartitionGroup PartitionGroup[4];
void MarkAsUsed(u64 _Offset, u64 _Size);
void MarkAsUsedE(u64 _PartitionDataOffset, u64 _Offset, u64 _Size);
void ReadFromVolume(u64 _Offset, u32& _Buffer, bool _Decrypt);
void ReadFromVolume(u64 _Offset, u64& _Buffer, bool _Decrypt);
bool ReadFromVolume(u64 _Offset, u32& _Buffer, bool _Decrypt);
bool ReadFromVolume(u64 _Offset, u64& _Buffer, bool _Decrypt);
bool ParseDisc();
bool ParsePartitionData(SPartition& _rPartition);
@ -192,16 +192,18 @@ void MarkAsUsedE(u64 _PartitionDataOffset, u64 _Offset, u64 _Size)
}
// Helper functions for reading the BE volume
void ReadFromVolume(u64 _Offset, u32& _Buffer, bool _Decrypt)
bool ReadFromVolume(u64 _Offset, u32& _Buffer, bool _Decrypt)
{
s_disc->Read(_Offset, sizeof(u32), (u8*)&_Buffer, _Decrypt);
_Buffer = Common::swap32(_Buffer);
return s_disc->ReadSwapped(_Offset, &_Buffer, _Decrypt);
}
void ReadFromVolume(u64 _Offset, u64& _Buffer, bool _Decrypt)
bool ReadFromVolume(u64 _Offset, u64& _Buffer, bool _Decrypt)
{
s_disc->Read(_Offset, sizeof(u32), (u8*)&_Buffer, _Decrypt);
_Buffer = Common::swap32((u32)_Buffer);
_Buffer <<= 2;
u32 temp_buffer;
if (!s_disc->ReadSwapped(_Offset, &temp_buffer, _Decrypt))
return false;
_Buffer = static_cast<u64>(temp_buffer) << 2;
return true;
}
bool ParseDisc()
@ -211,8 +213,9 @@ bool ParseDisc()
for (int x = 0; x < 4; x++)
{
ReadFromVolume(0x40000 + (x * 8) + 0, PartitionGroup[x].numPartitions, false);
ReadFromVolume(0x40000 + (x * 8) + 4, PartitionGroup[x].PartitionsOffset, false);
if (!ReadFromVolume(0x40000 + (x * 8) + 0, PartitionGroup[x].numPartitions, false) ||
!ReadFromVolume(0x40000 + (x * 8) + 4, PartitionGroup[x].PartitionsOffset, false))
return false;
// Read all partitions
for (u32 i = 0; i < PartitionGroup[x].numPartitions; i++)
@ -222,16 +225,16 @@ bool ParseDisc()
Partition.GroupNumber = x;
Partition.Number = i;
ReadFromVolume(PartitionGroup[x].PartitionsOffset + (i * 8) + 0, Partition.Offset, false);
ReadFromVolume(PartitionGroup[x].PartitionsOffset + (i * 8) + 4, Partition.Type, false);
ReadFromVolume(Partition.Offset + 0x2a4, Partition.Header.TMDSize, false);
ReadFromVolume(Partition.Offset + 0x2a8, Partition.Header.TMDOffset, false);
ReadFromVolume(Partition.Offset + 0x2ac, Partition.Header.CertChainSize, false);
ReadFromVolume(Partition.Offset + 0x2b0, Partition.Header.CertChainOffset, false);
ReadFromVolume(Partition.Offset + 0x2b4, Partition.Header.H3Offset, false);
ReadFromVolume(Partition.Offset + 0x2b8, Partition.Header.DataOffset, false);
ReadFromVolume(Partition.Offset + 0x2bc, Partition.Header.DataSize, false);
if (!ReadFromVolume(PartitionGroup[x].PartitionsOffset + (i * 8) + 0, Partition.Offset, false) ||
!ReadFromVolume(PartitionGroup[x].PartitionsOffset + (i * 8) + 4, Partition.Type, false) ||
!ReadFromVolume(Partition.Offset + 0x2a4, Partition.Header.TMDSize, false) ||
!ReadFromVolume(Partition.Offset + 0x2a8, Partition.Header.TMDOffset, false) ||
!ReadFromVolume(Partition.Offset + 0x2ac, Partition.Header.CertChainSize, false) ||
!ReadFromVolume(Partition.Offset + 0x2b0, Partition.Header.CertChainOffset, false) ||
!ReadFromVolume(Partition.Offset + 0x2b4, Partition.Header.H3Offset, false) ||
!ReadFromVolume(Partition.Offset + 0x2b8, Partition.Header.DataOffset, false) ||
!ReadFromVolume(Partition.Offset + 0x2bc, Partition.Header.DataSize, false))
return false;
PartitionGroup[x].PartitionsVec.push_back(Partition);
}
@ -286,8 +289,8 @@ bool ParsePartitionData(SPartition& partition)
{
// Mark things as used which are not in the filesystem
// Header, Header Information, Apploader
ReadFromVolume(0x2440 + 0x14, partition.Header.ApploaderSize, true);
ReadFromVolume(0x2440 + 0x18, partition.Header.ApploaderTrailerSize, true);
parsed_ok = parsed_ok && ReadFromVolume(0x2440 + 0x14, partition.Header.ApploaderSize, true);
parsed_ok = parsed_ok && ReadFromVolume(0x2440 + 0x18, partition.Header.ApploaderTrailerSize, true);
MarkAsUsedE(partition.Offset
+ partition.Header.DataOffset
, 0
@ -296,16 +299,17 @@ bool ParsePartitionData(SPartition& partition)
+ partition.Header.ApploaderTrailerSize);
// DOL
ReadFromVolume(0x420, partition.Header.DOLOffset, true);
partition.Header.DOLOffset = filesystem->GetBootDOLOffset();
partition.Header.DOLSize = filesystem->GetBootDOLSize(partition.Header.DOLOffset);
parsed_ok = parsed_ok && partition.Header.DOLOffset && partition.Header.DOLSize;
MarkAsUsedE(partition.Offset
+ partition.Header.DataOffset
, partition.Header.DOLOffset
, partition.Header.DOLSize);
// FST
ReadFromVolume(0x424, partition.Header.FSTOffset, true);
ReadFromVolume(0x428, partition.Header.FSTSize, true);
parsed_ok = parsed_ok && ReadFromVolume(0x424, partition.Header.FSTOffset, true);
parsed_ok = parsed_ok && ReadFromVolume(0x428, partition.Header.FSTSize, true);
MarkAsUsedE(partition.Offset
+ partition.Header.DataOffset
, partition.Header.FSTOffset