Fixed handling of partition and device flags and statuses.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3898 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/disk_device_manager/KDiskDevice.h

@@ -43,6 +43,8 @@ public:
 
 	void SetDeviceFlags(uint32 flags);	// comprises the ones below
 	uint32 DeviceFlags() const;
+	bool IsReadOnlyMedia() const;
+	bool IsWriteOnce() const;
 	bool IsRemovable() const;
 	bool HasMedia() const;