C++ (Cpp) cn_proc_ack Examples

Example #1

File: cn_proc.c Project: twobrokenshoes/linux-3.8

/**
 * cn_proc_mcast_ctl
 * @data: message sent from userspace via the connector
 */
static void cn_proc_mcast_ctl(struct cn_msg *msg,
                              struct netlink_skb_parms *nsp)
{
    enum proc_cn_mcast_op *mc_op = NULL;
    int err = 0;

    if (msg->len != sizeof(*mc_op))
        return;

    /*
     * Events are reported with respect to the initial pid
     * and user namespaces so ignore requestors from
     * other namespaces.
     */
    if ((current_user_ns() != &init_user_ns) ||
            (task_active_pid_ns(current) != &init_pid_ns))
        return;

    mc_op = (enum proc_cn_mcast_op *)msg->data;
    switch (*mc_op) {
    case PROC_CN_MCAST_LISTEN:
        atomic_inc(&proc_event_num_listeners);
        break;
    case PROC_CN_MCAST_IGNORE:
        atomic_dec(&proc_event_num_listeners);
        break;
    default:
        err = EINVAL;
        break;
    }
    cn_proc_ack(err, msg->seq, msg->ack);
}

Example #2

File: cn_proc.c Project: minhdangoz/PureX_kernel_j608_xolo

/**
 * cn_proc_mcast_ctl
 * @data: message sent from userspace via the connector
 */
static void cn_proc_mcast_ctl(struct cn_msg *msg,
			      struct netlink_skb_parms *nsp)
{
	enum proc_cn_mcast_op *mc_op = NULL;
	int err = 0;

	if (msg->len != sizeof(*mc_op))
		return;

	/* Can only change if privileged. */
	if (!capable(CAP_NET_ADMIN)) {
		err = EPERM;
		goto out;
	}

	mc_op = (enum proc_cn_mcast_op*)msg->data;
	switch (*mc_op) {
	case PROC_CN_MCAST_LISTEN:
		atomic_inc(&proc_event_num_listeners);
		break;
	case PROC_CN_MCAST_IGNORE:
		atomic_dec(&proc_event_num_listeners);
		break;
	default:
		err = EINVAL;
		break;
	}

out:
	cn_proc_ack(err, msg->seq, msg->ack);
}

Example #3

File: cn_proc.c Project: SSLab-NTHU/linux-guest-armvisor

/**
 * cn_proc_mcast_ctl
 * @data: message sent from userspace via the connector
 */
static void cn_proc_mcast_ctl(struct cn_msg *msg, struct netlink_skb_parms *nsp)
{
	enum proc_cn_mcast_op *mc_op = NULL;
	int err = 0;

	if (msg->len != sizeof(*mc_op))
		return;

	mc_op = (enum proc_cn_mcast_op*)msg->data;
	switch (*mc_op) {
	case PROC_CN_MCAST_LISTEN:
		atomic_inc(&proc_event_num_listeners);
		break;
	case PROC_CN_MCAST_IGNORE:
		atomic_dec(&proc_event_num_listeners);
		break;
	default:
		err = EINVAL;
		break;
	}
	cn_proc_ack(err, msg->seq, msg->ack);
}