resize cache after change of sector size

The disk cache is based on sector size and must be resized when the
sector size changes.

However, Disk::ResizeCache needs a 'raw' parameter which is not
accessible. So we need to add GetRawMode to DiskCache.

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

cpp/devices/disk.h

@@ -111,7 +111,7 @@ class Disk : public StorageDevice, private ScsiBlockCommands
 
 	void SetUpCache(off_t, bool = false);
 	void ResizeCache(const string&, bool);
-
+        bool GetRawMode() { return cache->GetRawMode(); }
 	void SetUpModePages(map<int, vector<byte>>&, int, bool) const override;
 	void AddErrorPage(map<int, vector<byte>>&, bool) const;
 	virtual void AddFormatPage(map<int, vector<byte>>&, bool) const;

cpp/devices/disk_cache.h

@@ -51,6 +51,7 @@ class DiskCache
 	~DiskCache() = default;
 
 	void SetRawMode(bool b) { cd_raw = b; }		// CD-ROM raw mode setting
+	bool GetRawMode() { return cd_raw; }
 
 	bool Save();							// Save and release all
 	bool ReadSector(span<uint8_t>, uint32_t);			// Sector Read

cpp/devices/scsicd.cpp

@@ -181,6 +181,8 @@ void SCSICD::ModeSelect(scsi_command cmd, cdb_t cdb, span<const uint8_t> buf, in
 		SetSectorSizeInBytes(wanted_sector_size);
 		ClearTrack();
 		CreateDataTrack();
+		FlushCache();
+		ResizeCache(GetFilename(), GetRawMode());
 	}
 
 	if (const string result = scsi_command_util::ModeSelect(cmd, cdb, buf, length, sector_size);