Fix notifications when adding package link dir

When adding a new package link directory, the volume would only be
notified about the addition of the directory itself, not of the addition
of its contents. Add a new PackageLinkDirectory::NotifyDirectoryAdded()
which does the whole job and use it in
PackageLinksDirectory::AddPackage().

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

@@ -149,6 +149,26 @@ PackageLinkDirectory::UpdatePackageDependencies(Package* package,
 }
 
 
+void
+PackageLinkDirectory::NotifyDirectoryAdded(PackageLinksListener* listener)
+{
+	NodeWriteLocker writeLocker(this);
+
+	listener->PackageLinkNodeAdded(this);
+
+	if (fSelfLink != NULL) {
+		NodeWriteLocker selfLinkLocker(fSelfLink);
+		listener->PackageLinkNodeAdded(fSelfLink);
+	}
+
+	for (FamilyDependencyList::Iterator it = fDependencyLinks.GetIterator();
+			DependencyLink* link = it.Next();) {
+		NodeWriteLocker linkLocker(link);
+		listener->PackageLinkNodeAdded(link);
+	}
+}
+
+
 status_t
 PackageLinkDirectory::_Update(PackageLinksListener* listener)
 {

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

@@ -32,6 +32,9 @@ public:
 			void				UpdatePackageDependencies(Package* package,
 									PackageLinksListener* listener);
 
+			void				NotifyDirectoryAdded(
+									PackageLinksListener* listener);
+
 			bool				IsEmpty() const
 									{ return fPackages.IsEmpty(); }
 

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

@@ -70,10 +70,8 @@ PackageLinksDirectory::AddPackage(Package* package)
 		// No entry is in the way, so just add the link directory.
 		AddChild(linkDirectory);
 
-		if (fListener != NULL) {
+		if (fListener != NULL)
-			NodeWriteLocker linkDirectoryWriteLocker(linkDirectory);
+			linkDirectory->NotifyDirectoryAdded(fListener);
-			fListener->PackageLinkNodeAdded(linkDirectory);
-		}
 	}
 
 	return B_OK;