Node: Keep track of VFS init status

* Node::VFSInit() and VFSUninit() set/clear the new node flag
  NODE_FLAG_KNOWN_TO_VFS. They need to be called by overriding methods,
  now.
* Add Node::IsKnownToVFS() which returns the VFS init status.

src/add-ons/kernel/file_systems/packagefs/Node.cpp

@@ -56,6 +56,7 @@ Node::Init(Directory* parent, const char* name, uint32 flags)
 status_t
 Node::VFSInit(dev_t deviceID)
 {
+	fFlags |= NODE_FLAG_KNOWN_TO_VFS;
 	return B_OK;
 }
 
@@ -63,6 +64,7 @@ Node::VFSInit(dev_t deviceID)
 void
 Node::VFSUninit()
 {
+	fFlags &= ~(uint32)NODE_FLAG_KNOWN_TO_VFS;
 }
 
 

src/add-ons/kernel/file_systems/packagefs/Node.h

@@ -32,7 +32,9 @@ enum {
 	NODE_FLAG_CONST_NAME	= 0x02,
 		// Init(): The given name is a constant that won't go away during the
 		// lifetime of the object. No need to copy.
-	NODE_FLAG_OWNS_NAME		= NODE_FLAG_KEEP_NAME
+	NODE_FLAG_OWNS_NAME		= NODE_FLAG_KEEP_NAME,
+	NODE_FLAG_KNOWN_TO_VFS	= 0x04,
+		// internal flag
 };
 
 
@@ -61,7 +63,11 @@ public:
 									// so also on error.
 
 	virtual	status_t			VFSInit(dev_t deviceID);
+									// base class version must be called on
+									// success
 	virtual	void				VFSUninit();
+									// base class version must be called
+	inline	bool				IsKnownToVFS() const;
 
 			void				SetID(ino_t id);
 			void				SetParent(Directory* parent);
@@ -126,6 +132,16 @@ Node::WriteUnlock()
 }
 
 
+bool
+Node::IsKnownToVFS() const
+{
+	return (fFlags & NODE_FLAG_KNOWN_TO_VFS) != 0;
+}
+
+
+// #pragma mark -
+
+
 struct NodeNameHashDefinition {
 	typedef const char*		KeyType;
 	typedef	Node			ValueType;

src/add-ons/kernel/file_systems/packagefs/UnpackingLeafNode.cpp

@@ -34,9 +34,14 @@ UnpackingLeafNode::~UnpackingLeafNode()
 status_t
 UnpackingLeafNode::VFSInit(dev_t deviceID)
 {
+	status_t error = B_OK;
 	if (PackageLeafNode* packageNode = _ActivePackageNode())
-		return packageNode->VFSInit(deviceID, fID);
+		error = packageNode->VFSInit(deviceID, fID);
-	return B_OK;
+
+	if (error == B_OK)
+		Node::VFSInit(deviceID);
+
+	return error;
 }
 
 
@@ -45,6 +50,8 @@ UnpackingLeafNode::VFSUninit()
 {
 	if (PackageLeafNode* packageNode = _ActivePackageNode())
 		packageNode->VFSUninit();
+
+	Node::VFSUninit();
 }