* 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,       

src/kits/storage/DiskSystem.cpp

@@ -4,10 +4,14 @@
  */
 
 #include <DiskSystem.h>
+
+#include <DiskSystemAddOn.h>
 #include <Partition.h>
 
-#include <syscalls.h>
 #include <disk_device_manager/ddm_userland_interface.h>
+#include <syscalls.h>
+
+#include "DiskSystemAddOnManager.h"
 
 
 // constructor
@@ -277,37 +281,28 @@ BDiskSystem::SupportsInitializing() const
 }
 
 
-// GetNextSupportedType
-status_t
-BDiskSystem::GetNextSupportedType(BPartition* partition, int32* cookie,
-	char* type) const
-{
-// TODO: We probably need a second method for and modify the partitioning
-// system module hook a little. This method takes the parent partition of
-// a partition to be created for which we want to get supported types. It
-// should also be possible to invoke it for the partition whose type to change
-// though.
-	if (InitCheck() != B_OK)
-		return InitCheck();
-	if (!cookie || !type || !partition || !partition->_IsShadow()
-		|| partition->_DiskSystem() != fID || !IsPartitioningSystem()) {
-		return B_BAD_VALUE;
-	}
-
-	return _kern_get_next_supported_partition_type(partition->_ShadowID(),
-		partition->_ChangeCounter(), cookie, type);
-}
-
-
 // GetTypeForContentType
 status_t
-BDiskSystem::GetTypeForContentType(const char* contentType, char* type) const
+BDiskSystem::GetTypeForContentType(const char* contentType, BString* type) const
 {
 	if (InitCheck() != B_OK)
 		return InitCheck();
+
 	if (!contentType || !type || !IsPartitioningSystem())
 		return B_BAD_VALUE;
-	return _kern_get_partition_type_for_content_type(fID, contentType, type);
+
+	// get the disk system add-on
+	DiskSystemAddOnManager* manager = DiskSystemAddOnManager::Default();
+	BDiskSystemAddOn* addOn = manager->GetAddOn(fName.String());
+	if (!addOn)
+		return B_ENTRY_NOT_FOUND;
+
+	status_t result = addOn->GetTypeForContentType(contentType, type);
+
+	// put the add-on
+	manager->PutAddOn(addOn);
+
+	return result;
 }
 
 
@@ -327,17 +322,6 @@ BDiskSystem::IsFileSystem() const
 }
 
 
-// IsSubSystemFor
-bool
-BDiskSystem::IsSubSystemFor(BPartition* parent) const
-{
-	return (InitCheck() == B_OK
-		&& parent && parent->_IsShadow()
-		&& _kern_is_sub_disk_system_for(fID, parent->_ShadowID(),
-			parent->_ChangeCounter()));
-}
-
-
 // =
 BDiskSystem&
 BDiskSystem::operator=(const BDiskSystem& other)
@@ -371,7 +355,7 @@ BDiskSystem::_SetTo(disk_system_id id)
 
 // _SetTo
 status_t
-BDiskSystem::_SetTo(user_disk_system_info* info)
+BDiskSystem::_SetTo(const user_disk_system_info* info)
 {
 	_Unset();
 

src/kits/storage/DiskSystemAddOn.cpp

@@ -76,6 +76,22 @@ BDiskSystemAddOn::Initialize(BMutablePartition* partition, const char* name,
 }
 
 
+// GetTypeForContentType
+status_t
+BDiskSystemAddOn::GetTypeForContentType(const char* contentType, BString* type)
+{
+	return B_NOT_SUPPORTED;
+}
+
+
+// IsSubSystemFor
+bool
+BDiskSystemAddOn::IsSubSystemFor(const BMutablePartition* child)
+{
+	return false;
+}
+
+
 // #pragma mark - BPartitionHandle
 
 
@@ -126,14 +142,6 @@ BPartitionHandle::SupportsInitializingChild(const BMutablePartition* child,
 }
 
 
-// IsSubSystemFor
-bool
-BPartitionHandle::IsSubSystemFor(const BMutablePartition* child)
-{
-	return false;
-}
-
-
 // GetNextSupportedType
 status_t
 BPartitionHandle::GetNextSupportedType(const BMutablePartition* child,
@@ -143,14 +151,6 @@ BPartitionHandle::GetNextSupportedType(const BMutablePartition* child,
 }
 
 
-// GetTypeForContentType
-status_t
-BPartitionHandle::GetTypeForContentType(const char* contentType, BString* type)
-{
-	return B_NOT_SUPPORTED;
-}
-
-
 // GetPartitioningInfo
 status_t
 BPartitionHandle::GetPartitioningInfo(BPartitioningInfo* info)

src/kits/storage/Partition.cpp

@@ -1059,6 +1059,42 @@ BPartition::SetContentParameters(const char* parameters)
 }
 
 
+// GetNextSupportedType
+status_t
+BPartition::GetNextSupportedType(int32 *cookie, BString* type) const
+{
+	BPartition* parent = Parent();
+	if (!parent || !fDelegate)
+		return false;
+
+	return parent->fDelegate->GetNextSupportedChildType(fDelegate, cookie,
+		type);
+}
+
+
+// GetNextSupportedChildType
+status_t
+BPartition::GetNextSupportedChildType(int32 *cookie, BString* type) const
+{
+	if (!fDelegate)
+		return B_BAD_VALUE;
+
+	return fDelegate->GetNextSupportedChildType(NULL, cookie, type);
+}
+
+
+// IsSubSystem
+bool
+BPartition::BPartition::IsSubSystem(const char* diskSystem) const
+{
+	BPartition* parent = Parent();
+	if (!parent || !fDelegate)
+		return false;
+
+	return parent->fDelegate->IsSubSystem(fDelegate, diskSystem);
+}
+
+
 // CanInitialize
 bool
 BPartition::CanInitialize(const char* diskSystem) const

src/kits/storage/PartitionDelegate.cpp

@@ -353,6 +353,38 @@ BPartition::Delegate::SetParameters(Delegate* child, const char* parameters)
 }
 
 
+// GetNextSupportedChildType
+status_t
+BPartition::Delegate::GetNextSupportedChildType(Delegate* child, int32 *cookie,
+	BString* type) const
+{
+	if (!fPartitionHandle)
+		return B_NO_INIT;
+
+	return fPartitionHandle->GetNextSupportedType(
+		child ? &child->fMutablePartition : NULL, cookie, type);
+}
+
+
+// IsSubSystem
+bool
+BPartition::Delegate::IsSubSystem(Delegate* child, const char* diskSystem) const
+{
+	// get the disk system add-on
+	DiskSystemAddOnManager* manager = DiskSystemAddOnManager::Default();
+	BDiskSystemAddOn* addOn = manager->GetAddOn(diskSystem);
+	if (!addOn)
+		return false;
+
+	bool result = addOn->IsSubSystemFor(&child->fMutablePartition);
+
+	// put the add-on
+	manager->PutAddOn(addOn);
+
+	return result;
+}
+
+
 // CanInitialize
 bool
 BPartition::Delegate::CanInitialize(const char* diskSystem) const

src/kits/storage/PartitionDelegate.h

@@ -72,6 +72,11 @@ public:
 			status_t			SetParameters(Delegate* child,
 									const char* parameters);
 
+			status_t			GetNextSupportedChildType(Delegate* child,
+									int32 *cookie, BString* type) const;
+			bool				IsSubSystem(Delegate* child,
+									const char* diskSystem) const;
+
 			bool				CanInitialize(const char* diskSystem) const;
 			status_t			GetInitializationParameterEditor(
 									const char* system,