def add(doctype, name, user=None, read=1, write=0, share=0, everyone=0, flags=None):
	"""Share the given document with a user."""
	if not user:
		user = frappe.session.user

	if not (flags or {}).get("ignore_share_permission"):
		check_share_permission(doctype, name)

	share_name = get_share_name(doctype, name, user, everyone)

	if share_name:
		doc = frappe.get_doc("DocShare", share_name)
	else:
		doc = frappe.new_doc("DocShare")
		doc.update({
			"user": user,
			"share_doctype": doctype,
			"share_name": name,
			"everyone": cint(everyone)
		})

	if flags:
		doc.flags.update(flags)

	doc.update({
		# always add read, since you are adding!
		"read": 1,
		"write": cint(write),
		"share": cint(share)
	})

	doc.save(ignore_permissions=True)
	notify_assignment(user, doctype, name, everyone)

	follow_document(doctype, name, user)

	return doc