Update handling of allocation length for SCSI-1-CCS

uweseimet · Oct 26, 2024 · 717e405 · 717e405
1 parent cd56e1c
commit 717e405
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/cpp/base/primary_device.cpp b/cpp/base/primary_device.cpp
@@ -190,7 +190,11 @@ void PrimaryDevice::RequestSense()
 
     const vector<byte> &buf = GetController()->GetDeviceForLun(effective_lun)->HandleRequestSense();
 
-    const auto length = static_cast<int>(min(buf.size(), static_cast<size_t>(GetController()->GetCdbByte(4))));
+    int allocation_length = GetController()->GetCdbByte(4);
+    if (!allocation_length && level == scsi_level::scsi_1_ccs) {
+        allocation_length = 4;
+    }
+    const auto length = static_cast<int>(min(buf.size(), static_cast<size_t>(allocation_length)));
     GetController()->CopyToBuffer(buf.data(), length);
 
     // Clear the previous status