Work on portmaster restructuring

process/process_linux.go

@@ -1,13 +1,21 @@
 package process
 
+// IsUser returns whether the process is run by a normal user.
 func (m *Process) IsUser() bool {
 	return m.UserID >= 1000
 }
 
+// IsAdmin returns whether the process is run by an admin user.
 func (m *Process) IsAdmin() bool {
 	return m.UserID >= 0
 }
 
+// IsSystem returns whether the process is run by the operating system.
 func (m *Process) IsSystem() bool {
 	return m.UserID == 0
 }
+
+// IsKernel returns whether the process is the Kernel.
+func (m *Process) IsKernel() bool {
+	return m.Pid == 0
+}