--- nono/vm/scsicmd.h	2026/04/29 17:05:18	1.1.1.5
+++ nono/vm/scsicmd.h	2026/04/29 17:05:29	1.1.1.7
@@ -16,6 +16,9 @@
 // READ/WRITE は多すぎるのでログを省略したい場合に定義。
 //#define NO_READWRITE_LOG
 
+class SCSIDisk;
+class SCSITarget;
+
 //
 // SCSI コマンドの基本クラス
 // (黙って成功するコマンドとしても使用可能)
@@ -23,7 +26,7 @@
 class SCSICmd
 {
  public:
-	SCSICmd(SCSITarget *parent_);
+	explicit SCSICmd(SCSITarget *parent_);
 	virtual ~SCSICmd();
 
 	// 転送バッファと転送バイト数。
@@ -108,8 +111,8 @@ class SCSICmdNotSupportedCommand : publi
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdNotSupportedCommand(SCSITarget *);
-	virtual ~SCSICmdNotSupportedCommand() override;
+	explicit SCSICmdNotSupportedCommand(SCSITarget *);
+	~SCSICmdNotSupportedCommand() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 };
@@ -121,8 +124,8 @@ class SCSICmdRequestSense : public SCSIC
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdRequestSense(SCSITarget *);
-	virtual ~SCSICmdRequestSense() override;
+	explicit SCSICmdRequestSense(SCSITarget *);
+	~SCSICmdRequestSense() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 };
@@ -135,8 +138,8 @@ class SCSICmdRead : public SCSICmd
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdRead(SCSIDisk *);
-	virtual ~SCSICmdRead() override;
+	explicit SCSICmdRead(SCSIDisk *);
+	~SCSICmdRead() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 
@@ -152,8 +155,8 @@ class SCSICmdWrite : public SCSICmd
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdWrite(SCSIDisk *);
-	virtual ~SCSICmdWrite() override;
+	explicit SCSICmdWrite(SCSIDisk *);
+	~SCSICmdWrite() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 	SCSI::XferPhase DoneDataOut() override;
@@ -172,8 +175,8 @@ class SCSICmdInquiry : public SCSICmd
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdInquiry(SCSITarget *);
-	virtual ~SCSICmdInquiry() override;
+	explicit SCSICmdInquiry(SCSITarget *);
+	~SCSICmdInquiry() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 };
@@ -186,8 +189,8 @@ class SCSICmdModeSelect : public SCSICmd
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdModeSelect(SCSITarget *);
-	virtual ~SCSICmdModeSelect() override;
+	explicit SCSICmdModeSelect(SCSITarget *);
+	~SCSICmdModeSelect() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 	SCSI::XferPhase DoneDataOut() override;
@@ -204,8 +207,8 @@ class SCSICmdModeSense : public SCSICmd
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdModeSense(SCSITarget *);
-	virtual ~SCSICmdModeSense() override;
+	explicit SCSICmdModeSense(SCSITarget *);
+	~SCSICmdModeSense() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 
@@ -248,8 +251,8 @@ class SCSICmdStartStopUnit : public SCSI
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdStartStopUnit(SCSIDisk *);
-	virtual ~SCSICmdStartStopUnit() override;
+	explicit SCSICmdStartStopUnit(SCSIDisk *);
+	~SCSICmdStartStopUnit() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 
@@ -264,8 +267,8 @@ class SCSICmdPreventAllowMediumRemoval :
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdPreventAllowMediumRemoval(SCSIDisk *);
-	virtual ~SCSICmdPreventAllowMediumRemoval() override;
+	explicit SCSICmdPreventAllowMediumRemoval(SCSIDisk *);
+	~SCSICmdPreventAllowMediumRemoval() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 
@@ -282,8 +285,8 @@ class SCSICmdReadCapacity : public SCSIC
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdReadCapacity(SCSIDisk *);
-	virtual ~SCSICmdReadCapacity() override;
+	explicit SCSICmdReadCapacity(SCSIDisk *);
+	~SCSICmdReadCapacity() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;
 
@@ -298,8 +301,8 @@ class SCSICmdReadTOC : public SCSICmd
 {
 	using inherited = SCSICmd;
  public:
-	SCSICmdReadTOC(SCSIDisk *);
-	virtual ~SCSICmdReadTOC() override;
+	explicit SCSICmdReadTOC(SCSIDisk *);
+	~SCSICmdReadTOC() override;
 
 	SCSI::XferPhase Command(std::vector<uint8>& cmdseq) override;