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Disk: Proper error reporting for EOF

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This commit is contained in:
Paul Hollinsky
2022-02-25 01:14:57 -05:00
parent 9d2d94d22b
commit 242c7259ac
2 changed files with 15 additions and 13 deletions
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disk/diskwritedriver.cpp
+12 -11
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@@ -40,17 +40,17 @@ optional<uint64_t> WriteDriver::writeLogicalDisk(Communication& com, device_even
curAmt = static_cast<uint32_t>(amountLeft);
auto start = std::chrono::high_resolution_clock::now();
auto amount = readDriver.readLogicalDisk(com, report, currentBlock * idealBlockSize, atomicBuffer.data(),
idealBlockSize, timeout);
const auto reportFromRead = [&report, &blocksProcessed](APIEvent::Type t, APIEvent::Severity s) {
if(t == APIEvent::Type::ParameterOutOfRange && blocksProcessed)
t = APIEvent::Type::EOFReached;
report(t, s);
};
auto amount = readDriver.readLogicalDisk(com, reportFromRead, currentBlock * idealBlockSize,
atomicBuffer.data(), idealBlockSize, timeout);
timeout -= std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - start);
if(amount != idealBlockSize) {
if(timeout < std::chrono::milliseconds::zero())
report(APIEvent::Type::Timeout, APIEvent::Severity::Error);
else
report(blocksProcessed ? APIEvent::Type::EOFReached : APIEvent::Type::ParameterOutOfRange, APIEvent::Severity::Error);
break;
}
if(amount != idealBlockSize)
break; // readLogicalDisk reports its own errors
const bool useAlignedWriteBuffer = (posWithinCurrentBlock != 0 || curAmt != idealBlockSize);
if(useAlignedWriteBuffer) {
@@ -70,11 +70,12 @@ optional<uint64_t> WriteDriver::writeLogicalDisk(Communication& com, device_even
continue;
}
if(!amount.has_value() || *amount == 0) {
if(!amount.has_value() || *amount < curAmt) {
if(timeout < std::chrono::milliseconds::zero())
report(APIEvent::Type::Timeout, APIEvent::Severity::Error);
else
report(blocksProcessed ? APIEvent::Type::EOFReached : APIEvent::Type::ParameterOutOfRange, APIEvent::Severity::Error);
report((blocksProcessed || amount.value_or(0u) != 0u) ? APIEvent::Type::EOFReached :
APIEvent::Type::ParameterOutOfRange, APIEvent::Severity::Error);
break;
}