Exemplo n.º 1
0
boolean_t
ipc_kobject_notify(
	mach_msg_header_t *request_header,
	mach_msg_header_t *reply_header)
{
	mach_msg_max_trailer_t * trailer;
	ipc_port_t port = (ipc_port_t) request_header->msgh_remote_port;

	((mig_reply_error_t *) reply_header)->RetCode = MIG_NO_REPLY;

	trailer = (mach_msg_max_trailer_t *)
	          ((vm_offset_t)request_header + request_header->msgh_size);

	/*
	 * The kobject notification is privileged and can change the
	 * refcount on kernel-internal objects - make sure
	 * that the message wasn't faked!
	 */
	if (0 != bcmp(&trailer->msgh_audit, &KERNEL_AUDIT_TOKEN,
			sizeof(trailer->msgh_audit))) {
		return FALSE;
	}
	if (0 != bcmp(&trailer->msgh_sender, &KERNEL_SECURITY_TOKEN,
			sizeof(trailer->msgh_sender))) {
		return FALSE;
	}

	switch (request_header->msgh_id) {
		case MACH_NOTIFY_NO_SENDERS:
			switch (ip_kotype(port)) {
			case IKOT_VOUCHER:
				ipc_voucher_notify(request_header);
				return TRUE;

			case IKOT_VOUCHER_ATTR_CONTROL:
				ipc_voucher_attr_control_notify(request_header);
				return TRUE;

			case IKOT_SEMAPHORE:
				semaphore_notify(request_header);
				return TRUE;

			case IKOT_TASK:
				task_port_notify(request_header);
				return TRUE;
				
			case IKOT_NAMED_ENTRY:
				ip_lock(port);

				/*
				 * Bring the sequence number and mscount in
				 * line with ipc_port_destroy assertion.
				 */
				port->ip_mscount = 0;
				port->ip_messages.imq_seqno = 0;
				ipc_port_destroy(port); /* releases lock */
				return TRUE;

			case IKOT_UPL:
				upl_no_senders(
					request_header->msgh_remote_port, 
					(mach_port_mscount_t) 
					((mach_no_senders_notification_t *) 
					 request_header)->not_count);
				reply_header->msgh_remote_port = MACH_PORT_NULL;
				return TRUE;

#if	CONFIG_AUDIT
			case IKOT_AU_SESSIONPORT:
				audit_session_nosenders(request_header);
				return TRUE;
#endif
			case IKOT_FILEPORT:
				fileport_notify(request_header);
				return TRUE;

			case IKOT_WORK_INTERVAL:
				work_interval_port_notify(request_header);
				return TRUE;

			}
		break;

		case MACH_NOTIFY_PORT_DELETED:
		case MACH_NOTIFY_PORT_DESTROYED:
		case MACH_NOTIFY_SEND_ONCE:
		case MACH_NOTIFY_DEAD_NAME:
		break;

		default:
		return FALSE;
	}
	switch (ip_kotype(port)) {

#ifdef IOKIT
		case IKOT_IOKIT_OBJECT:
		case IKOT_IOKIT_CONNECT:
		case IKOT_IOKIT_SPARE:
		{
                return iokit_notify(request_header);
		}
#endif
		case IKOT_TASK_RESUME:
		{
			return task_suspension_notify(request_header);
		}

		default:
                return FALSE;
        }
}
Exemplo n.º 2
0
boolean_t
ipc_kobject_notify(
	mach_msg_header_t *request_header,
	mach_msg_header_t *reply_header)
{
	ipc_port_t port = (ipc_port_t) request_header->msgh_remote_port;

	((mig_reply_error_t *) reply_header)->RetCode = MIG_NO_REPLY;
	switch (request_header->msgh_id) {
		case MACH_NOTIFY_NO_SENDERS:
			switch (ip_kotype(port)) {
			case IKOT_VOUCHER:
				ipc_voucher_notify(request_header);
				return TRUE;

			case IKOT_VOUCHER_ATTR_CONTROL:
				ipc_voucher_attr_control_notify(request_header);
				return TRUE;

			case IKOT_SEMAPHORE:
				semaphore_notify(request_header);
				return TRUE;
				
			case IKOT_NAMED_ENTRY:
				ip_lock(port);

				/*
				 * Bring the sequence number and mscount in
				 * line with ipc_port_destroy assertion.
				 */
				port->ip_mscount = 0;
				port->ip_messages.imq_seqno = 0;
				ipc_port_destroy(port); /* releases lock */
				return TRUE;

			case IKOT_UPL:
				upl_no_senders(
					request_header->msgh_remote_port, 
					(mach_port_mscount_t) 
					((mach_no_senders_notification_t *) 
					 request_header)->not_count);
				reply_header->msgh_remote_port = MACH_PORT_NULL;
				return TRUE;

#if	CONFIG_AUDIT
			case IKOT_AU_SESSIONPORT:
				audit_session_nosenders(request_header);
				return TRUE;
#endif
			case IKOT_FILEPORT:
				fileport_notify(request_header);
				return TRUE;
			}
	  	   break;

		case MACH_NOTIFY_PORT_DELETED:
		case MACH_NOTIFY_PORT_DESTROYED:
		case MACH_NOTIFY_SEND_ONCE:
		case MACH_NOTIFY_DEAD_NAME:
		break;

		default:
		return FALSE;
	}
	switch (ip_kotype(port)) {

#ifdef IOKIT
		case IKOT_IOKIT_OBJECT:
		case IKOT_IOKIT_CONNECT:
		case IKOT_IOKIT_SPARE:
		{
                return iokit_notify(request_header);
		}
#endif
		case IKOT_TASK_RESUME:
		{
			return task_suspension_notify(request_header);
		}

		default:
                return FALSE;
        }
}