* Initialization of BPartition::Delegate is now two-phased. The first phase

builds the object hierarchy, the second will (in case of MutableDelegate)
  let the disk systems do their initialization. This way the disk systems
  already find a fully functional object hierarchy they can work with.
* Child creation also takes a partition name as a parameter, now.
* Implemented BMutablePartition child creation/deletion.
* The BDiskSystemAddOn/BPartitionHandle::Validate*() methods return a
  status_t instead of a bool, now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22540 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/MutablePartition.h

@@ -55,10 +55,16 @@ public:
 
 			status_t			CreateChild(int32 index,
 									BMutablePartition** child);
+			status_t			CreateChild(int32 index, const char* type,
+									const char* name, const char* parameters,
+									BMutablePartition** child);
 			status_t			DeleteChild(int32 index);
+			status_t			DeleteChild(BMutablePartition* child);
 
+			BMutablePartition*	Parent() const;
 			BMutablePartition*	ChildAt(int32 index) const;
 			int32				CountChildren() const;
+			int32				IndexOfChild(BMutablePartition* child) const;
 
 			// for the partitioning system managing the parent
 			void*				ChildCookie() const;
@@ -69,7 +75,8 @@ private:
 									BPartition::MutableDelegate* delegate);
 								~BMutablePartition();
 
-			status_t			Init(const user_partition_data* partitionData);
+			status_t			Init(const user_partition_data* partitionData,
+									BMutablePartition* parent);
 
 			const user_partition_data* PartitionData() const;
 
@@ -80,6 +87,7 @@ private:
 
 			BPartition::MutableDelegate* fDelegate;
 			user_partition_data* fData;
+			BMutablePartition*	fParent;
 			BList				fChildren;
 			void*				fChildCookie;
 };