static umode_t switch_attr_is_visible()

in switch.c [1935:1989]

• 53 lines of code
• 30 McCabe index (conditional complexity)

static umode_t switch_attr_is_visible(struct kobject *kobj,
				      struct attribute *attr, int n)
{
	struct device *dev = kobj_to_dev(kobj);
	struct tb_switch *sw = tb_to_switch(dev);

	if (attr == &dev_attr_authorized.attr) {
		if (sw->tb->security_level == TB_SECURITY_NOPCIE ||
		    sw->tb->security_level == TB_SECURITY_DPONLY)
			return 0;
	} else if (attr == &dev_attr_device.attr) {
		if (!sw->device)
			return 0;
	} else if (attr == &dev_attr_device_name.attr) {
		if (!sw->device_name)
			return 0;
	} else if (attr == &dev_attr_vendor.attr)  {
		if (!sw->vendor)
			return 0;
	} else if (attr == &dev_attr_vendor_name.attr)  {
		if (!sw->vendor_name)
			return 0;
	} else if (attr == &dev_attr_key.attr) {
		if (tb_route(sw) &&
		    sw->tb->security_level == TB_SECURITY_SECURE &&
		    sw->security_level == TB_SECURITY_SECURE)
			return attr->mode;
		return 0;
	} else if (attr == &dev_attr_rx_speed.attr ||
		   attr == &dev_attr_rx_lanes.attr ||
		   attr == &dev_attr_tx_speed.attr ||
		   attr == &dev_attr_tx_lanes.attr) {
		if (tb_route(sw))
			return attr->mode;
		return 0;
	} else if (attr == &dev_attr_nvm_authenticate.attr) {
		if (nvm_upgradeable(sw))
			return attr->mode;
		return 0;
	} else if (attr == &dev_attr_nvm_version.attr) {
		if (nvm_readable(sw))
			return attr->mode;
		return 0;
	} else if (attr == &dev_attr_boot.attr) {
		if (tb_route(sw))
			return attr->mode;
		return 0;
	} else if (attr == &dev_attr_nvm_authenticate_on_disconnect.attr) {
		if (sw->quirks & QUIRK_FORCE_POWER_LINK_CONTROLLER)
			return attr->mode;
		return 0;
	}

	return sw->safe_mode ? 0 : attr->mode;
}