When I use IOKit/usb/IOUSBLib to toggle build-in camera, I got an ERROR:ret IOReturn -536870210
How can I resolve it? Can I use IOUSBLib to disable or hide build-in camera?
My environment:
Model Name: MacBook Pro
ProductVersion: 15.5
Model Identifier: MacBookPro15,2
Processor Name: Quad-Core Intel Core i5
Processor Speed: 2.4 GHz
Number of Processors: 1
// 禁用/启用USB设备
bool toggleUSBDevice(uint16_t vendorID, uint16_t productID, bool enable) {
std::cout << (enable ? "Enabling" : "Disabling") << " USB device with VID: 0x"
<< std::hex << vendorID << ", PID: 0x" << productID << std::endl;
// 创建匹配字典查找指定VID/PID的USB设备
CFMutableDictionaryRef matchingDict = IOServiceMatching(kIOUSBDeviceClassName);
if (!matchingDict) {
std::cerr << "Failed to create USB device matching dictionary." << std::endl;
return false;
}
// 设置VID/PID匹配条件
CFNumberRef vendorIDRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt16Type, &vendorID);
CFNumberRef productIDRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt16Type, &productID);
CFDictionarySetValue(matchingDict, CFSTR(kUSBVendorID), vendorIDRef);
CFDictionarySetValue(matchingDict, CFSTR(kUSBProductID), productIDRef);
CFRelease(vendorIDRef);
CFRelease(productIDRef);
// 获取匹配的设备迭代器
io_iterator_t deviceIterator;
if (IOServiceGetMatchingServices(kIOMainPortDefault, matchingDict, &deviceIterator) != KERN_SUCCESS) {
std::cerr << "Failed to get USB device iterator." << std::endl;
CFRelease(matchingDict);
return false;
}
io_service_t usbDevice;
bool result = false;
int deviceCount = 0;
// 遍历所有匹配的设备
while ((usbDevice = IOIteratorNext(deviceIterator)) != IO_OBJECT_NULL) {
deviceCount++;
// 获取设备路径
char path[1024];
if (IORegistryEntryGetPath(usbDevice, kIOServicePlane, path) == KERN_SUCCESS) {
std::cout << "Found device at path: " << path << std::endl;
}
// 打开设备
IOCFPlugInInterface** plugInInterface = NULL;
IOUSBDeviceInterface** deviceInterface = NULL;
SInt32 score;
IOReturn ret = IOCreatePlugInInterfaceForService(
usbDevice,
kIOUSBDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&plugInInterface,
&score);
if (ret == kIOReturnSuccess && plugInInterface) {
ret = (*plugInInterface)->QueryInterface(plugInInterface,
CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID),
(LPVOID*)&deviceInterface);
(*plugInInterface)->Release(plugInInterface);
}
if (ret != kIOReturnSuccess) {
std::cerr << "Failed to open USB device interface. Error:" << ret << std::endl;
IOObjectRelease(usbDevice);
continue;
}
// 禁用/启用设备
if (enable) {
// 启用设备 - 重新配置设备
ret = (*deviceInterface)->USBDeviceReEnumerate(deviceInterface, 0);
if (ret == kIOReturnSuccess) {
std::cout << "Device enabled successfully." << std::endl;
result = true;
} else {
std::cerr << "Failed to enable device. Error: " << ret << std::endl;
}
} else {
// 禁用设备 - 断开设备连接
ret = (*deviceInterface)->USBDeviceClose(deviceInterface);
if (ret == kIOReturnSuccess) {
std::cout << "Device disabled successfully." << std::endl;
result = true;
} else {
std::cerr << "Failed to disable device. Error: " << ret << std::endl;
}
}
// 关闭设备接口
(*deviceInterface)->Release(deviceInterface);
IOObjectRelease(usbDevice);
}
IOObjectRelease(deviceIterator);
if (deviceCount == 0) {
std::cerr << "No device found with specified VID/PID." << std::endl;
return false;
}
return result;
}
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