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Fix corrupted memory cards

This commit is contained in:
Phillip Stephens 2020-04-15 04:26:14 -07:00
parent 6d8d389459
commit 4891a95688
Signed by: Antidote
GPG Key ID: F8BEE4C83DACA60D
1 changed files with 8 additions and 2 deletions
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10
lib/kabufuda/BlockAllocationTable.cpp
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@ -23,7 +23,8 @@ void BlockAllocationTable::updateChecksum() {
} }
bool BlockAllocationTable::valid() const { bool BlockAllocationTable::valid() const {
uint16_t ckSum, ckSumInv; uint16_t ckSum = 0;
uint16_t ckSumInv = 0;
const_cast<BlockAllocationTable&>(*this).swapEndian(); const_cast<BlockAllocationTable&>(*this).swapEndian();
calculateChecksumBE(reinterpret_cast<const uint16_t*>(raw.data() + 4), 0xFFE, &ckSum, &ckSumInv); calculateChecksumBE(reinterpret_cast<const uint16_t*>(raw.data() + 4), 0xFFE, &ckSum, &ckSumInv);
bool res = (ckSum == m_checksum && ckSumInv == m_checksumInv); bool res = (ckSum == m_checksum && ckSumInv == m_checksumInv);
@ -32,7 +33,12 @@ bool BlockAllocationTable::valid() const {
} }
BlockAllocationTable::BlockAllocationTable(uint32_t blockCount) BlockAllocationTable::BlockAllocationTable(uint32_t blockCount)
: m_freeBlocks{uint16_t(blockCount - FSTBlocks)}, m_lastAllocated{4} { : m_checksum{0}
, m_checksumInv{0}
, m_updateCounter{0}
, m_freeBlocks{uint16_t(blockCount - FSTBlocks)}
, m_lastAllocated{4}
, m_map{{0}} {
updateChecksum(); updateChecksum();
} }