叠代所有連接的 USB 硬件設備
阿新 • • 發佈：2018-08-25
disk %s 配對 argc driver ucc with str gdi
//
// main.c
// DriverIterator
//
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
int main (int argc, const char * argv[])
{
CFDictionaryRef matchingDict = NULL;
io_iterator_t iter = 0;
io_service_t service = 0;
kern_return_t kr;
//創建一個匹配字典，查找任意的 USB 設備
matchingDict = IOServiceMatching("IOUSBDevice");
//為匹配該字典的所有 I/O Registry 對象創建一個叠代對象
kr = IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &iter);
if (kr != KERN_SUCCESS)
return -1;
//叠代所有的匹配對象
while ((service = IOIteratorNext(iter)) != 0)
{
CFStringRef className;
io_name_t name;
//列出所有的IOUSBDevice對象
className = IOObjectCopyClass(service);
if (CFEqual(className, CFSTR("IOUSBDevice")) == true)
{
IORegistryEntryGetName(service, name);
printf("Found device with name: %s\n", name);
}
CFRelease(className);
IOObjectRelease(service);
}
//釋放叠代器
IOObjectRelease(iter);
return 0;
}
liuhailong:~ liuhailong$ /Users/liuhailong/Library/Developer/Xcode/DerivedData/DriverIterator-hddbxkfinzzofxbrorottekflawo/Build/Products/Debug/DriverIterator Found device with name: BRCM20702 Hub Found device with name: Bluetooth USB Host Controller Found device with name: USB DISK Found device with name: IOUSBHostDevice liuhailong:~ liuhailong$
叠代所有連接的 USB 硬件設備