CODEWITHSUNDEEP
macosiokit
GregJaskiewicz
GregJaskiewicz

Reputation: 496

Get list of all USB Mass Storage devices

So I have a USB Mass Storage device, which exposes two disks to the macOS. I get detect the first one using https://stackoverflow.com/users/1412808/rafael-baptista 's article: https://oroboro.com/usb-serial-number-osx/

However, I cannot get the second one using code:

io_registry_entry_t    child;
io_iterator_t        child_iterator    = MACH_PORT_NULL;
kern_return_t        kr;

kr = IORegistryEntryCreateIterator(usbDevice,
                                   kIOServicePlane,
                                   kIORegistryIterateRecursively,
                                   &child_iterator);
if (kr != kIOReturnSuccess) {
    return;
}

while ((child = IOIteratorNext(child_iterator)) != MACH_PORT_NULL) {
    CFStringRef bsdName = NULL;

    bsdName = ( CFStringRef ) IORegistryEntrySearchCFProperty(child, kIOServicePlane, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, kIORegistryIterateRecursively );

    if ( bsdName ) {
....

I'd appreciate any pointers or information of what I could have done better here.

Thanks.

Upvotes: 1

Views: 785

Answers (1)

GregJaskiewicz
GregJaskiewicz

Reputation: 496

yes. Btw, I found a solution to this. I'm using disk arbitration to discover new drives.

  CFDictionaryRef dict = DADiskCopyDescription(disk);

    NSDictionary *diskDictionary = (__bridge NSDictionary *)dict;
    NSURL *mountPointURL = diskDictionary[(__bridge NSString *)kDADiskDescriptionVolumePathKey];
    NSString *deviceMountPath = [mountPointURL path];

    NSString *deviceDiskPath = diskDictionary[(__bridge NSString *)kDADiskDescriptionDevicePathKey];

deviceDiskPath will include IOPath, which will include device ID (or name) and VendorID !

Upvotes: 2

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