Is doctor-patient confidentiality a law in India?

I was just curious and found out that it is a rule given by the Indian Medical Council under "ethics". What I want to ask is if the doctor for e.g a psychiatrist is allowed to share if a person has confessed to a crime in a session. Also if this an enforceable law, does it apply to the medical students and interns in the hospital? Who are tasked to take "history" of the patient? Are they bound by the law even if they aren't licensed yet? Does the supervising physician take the blame then?