gpt: let the type be changed

Change-Id: I1c049c28b416d13b679aa32eb8cbc41a3273a05d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5657
Reviewed-by: waddlesplash <[email protected]>

src/add-ons/disk_systems/gpt/GPTPartitionHandle.cpp

@@ -15,6 +15,7 @@
 #include <PartitioningInfo.h>
 #include <PartitionParameterEditor.h>
 #include <Path.h>
+#include <SupportDefs.h>
 
 #include <AutoDeleter.h>
 
@@ -100,6 +101,7 @@ GPTPartitionHandle::SupportedChildOperations(const BMutablePartition* child,
 		| B_DISK_SYSTEM_SUPPORTS_RESIZING_CHILD
 		| B_DISK_SYSTEM_SUPPORTS_MOVING_CHILD
 		| B_DISK_SYSTEM_SUPPORTS_SETTING_TYPE
+		| B_DISK_SYSTEM_SUPPORTS_SETTING_PARAMETERS
 		| B_DISK_SYSTEM_SUPPORTS_DELETING_CHILD;
 }
 
@@ -112,7 +114,7 @@ GPTPartitionHandle::GetNextSupportedType(const BMutablePartition* child,
 	TRACE("GPTPartitionHandle::GetNextSupportedType(child: %p, cookie: %" B_PRId32 ")\n",
 		child, index);
 
-	if (index >= int32(sizeof(kTypeMap) / sizeof(kTypeMap[0])))
+	if (index >= int32(B_COUNT_OF(kTypeMap)))
 		return B_ENTRY_NOT_FOUND;
 
 	type->SetTo(kTypeMap[index].type);
@@ -152,7 +154,7 @@ GPTPartitionHandle::GetParameterEditor(B_PARAMETER_EDITOR_TYPE type,
 	BPartitionParameterEditor** editor)
 {
 	*editor = NULL;
-	if (type == B_CREATE_PARAMETER_EDITOR) {
+	if (type == B_CREATE_PARAMETER_EDITOR || type == B_PROPERTIES_PARAMETER_EDITOR) {
 		try {
 			*editor = new BPartitionParameterEditor();
 		} catch (std::bad_alloc&) {
@@ -195,6 +197,25 @@ GPTPartitionHandle::SetName(BMutablePartition* child, const char* name)
 }
 
 
+status_t
+GPTPartitionHandle::ValidateSetType(const BMutablePartition* child,
+	const char* type)
+{
+	for (size_t i = 0; i < B_COUNT_OF(kTypeMap); i++) {
+		if (strcmp(type, kTypeMap[i].type) == 0)
+			return B_OK;
+	}
+	return B_BAD_VALUE;
+}
+
+
+status_t
+GPTPartitionHandle::SetType(BMutablePartition* child, const char* type)
+{
+	return child->SetType(type);
+}
+
+
 status_t
 GPTPartitionHandle::ValidateCreateChild(off_t* _offset, off_t* _size,
 	const char* typeString, BString* name, const char* parameters)

src/add-ons/disk_systems/gpt/GPTPartitionHandle.h

@@ -26,6 +26,9 @@ public:
 									BString* name);
 	virtual status_t			SetName(BMutablePartition* child,
 									const char* name);
+	virtual status_t			ValidateSetType(const BMutablePartition* child,
+									const char* type);
+	virtual status_t			SetType(BMutablePartition* child, const char* type);
 
 	virtual	status_t			GetNextSupportedType(
 									const BMutablePartition* child,