1# USB子系统Changelog
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3## cl.usb.1 USB驱动API接口安全权限变更
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5从4.0x版本开始,@ohos.driver.deviceManager 中bindDevice、unbindDevice、queryDevices接口在调用时需申请ohos.permission.ACCESS_EXTENSIONAL_DEVICE_DRIVER权限。
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7function unbindDevice(deviceId: number): Promise\<number>;
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9function unbindDevice(deviceId: number, callback: AsyncCallback<number>): void;
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11function bindDevice(deviceId: number, onDisconnect: AsyncCallback<number>): Promise<{deviceId: number, remote: rpc.IRemoteObject}>;
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13function bindDevice(deviceId: number, onDisconnect: AsyncCallback<number>): Promise<{deviceId: number, remote: rpc.IRemoteObject}>;
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15function queryDevices(busType?: number): Array<Readonly<Device>>;
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17**变更影响**
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19变更前接口缺少权限限制,存在安全隐患。
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21添加了权限标签之后,在调用对应接口时,需要确保申请ohos.permission.ACCESS_EXTENSIONAL_DEVICE_DRIVER权限,才能对接口调用
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23**涉及接口**
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25对下列接口增加权限要求,需申请ohos.permission.ACCESS_EXTENSIONAL_DEVICE_DRIVER权限
26bindDevice
27unbindDevice
28queryDevices
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30**适配指导**
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32有了权限标签之后在调用接口时需要申请ohos.permission.ACCESS_EXTENSIONAL_DEVICE_DRIVER权限才可以。