* Moved GetNextSupportedType() and IsSubSystemFor() from

BDiskSystem to BPartition and reimplemented them using the userland
  add-on backend instead of syscalls. As a side effect this solves the
  TODO I recently added in GetNextSupportedType().
* Reimplemented BDiskSystem::GetTypeForContentType() using the userland
  add-on backend instead of a syscall.
* Moved GetTypeForContentType() and IsSubSystemFor() from
  BPartitionHandle to BDiskSystemAddOn. They were misplaced.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22592 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/DiskSystem.h

@@ -9,9 +9,12 @@
 #include <DiskDeviceDefs.h>
 #include <String.h>
 
+
 class BPartition;
+class BString;
 struct user_disk_system_info;
 
+
 class BDiskSystem {
 public:
 	BDiskSystem();
@@ -40,21 +43,17 @@ public:
 	bool SupportsDeletingChild() const;
 	bool SupportsInitializing() const;
 
-	status_t GetNextSupportedType(BPartition *partition, int32 *cookie,
-								  char *type) const;
-		// Returns all types the disk system supports for children of the
-		// supplied partition.
-	status_t GetTypeForContentType(const char *contentType, char *type) const;
+	status_t GetTypeForContentType(const char *contentType,
+		BString* type) const;
 
 	bool IsPartitioningSystem() const;
 	bool IsFileSystem() const;
-	bool IsSubSystemFor(BPartition *parent) const;
 
 	BDiskSystem& operator=(const BDiskSystem& other);
 
 private:
 	status_t _SetTo(disk_system_id id);
-	status_t _SetTo(user_disk_system_info *info);
+	status_t _SetTo(const user_disk_system_info *info);
 	void _Unset();
 
 	friend class BDiskDeviceRoster;

headers/private/storage/DiskSystemAddOn.h

@@ -41,6 +41,10 @@ public:
 									const char* name, const char* parameters,
 									BPartitionHandle** handle);
 
+	virtual	status_t			GetTypeForContentType(const char* contentType,
+									BString* type);
+	virtual	bool				IsSubSystemFor(const BMutablePartition* child);
+
 private:
 			BString				fName;
 			uint32				fFlags;
@@ -62,14 +66,11 @@ public:
 	virtual	bool				SupportsInitializingChild(
 									const BMutablePartition* child,
 									const char* diskSystem);
-	virtual	bool				IsSubSystemFor(const BMutablePartition* child);
 
 	virtual	status_t			GetNextSupportedType(
 									const BMutablePartition* child,
 									int32* cookie, BString* type);
 									// child can be NULL
-	virtual	status_t			GetTypeForContentType(const char* contentType,
-									BString* type);
 
 	virtual	status_t			GetPartitioningInfo(BPartitioningInfo* info);
 

headers/private/storage/Partition.h

@@ -128,6 +128,18 @@ public:
 									BDiskDeviceParameterEditor** editor);
 			status_t			SetContentParameters(const char* parameters);
 
+			status_t			GetNextSupportedType(int32 *cookie,
+									BString* type) const;
+									// Returns all partition types for this
+									// partition supported by the parent disk
+									// system.
+			status_t			GetNextSupportedChildType(int32 *cookie,
+									BString* type) const;
+									// Returns all partition types for a child
+									// of this partition supported by its disk
+									// system.
+			bool				IsSubSystem(const char* diskSystem) const;
+
 			bool				CanInitialize(const char* diskSystem) const;
 			status_t			GetInitializationParameterEditor(
 									const char* system,