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kotlinlang

Found a C macro called `udev_list_entry_foreach` which is used to access each entry in the list. Would manually iterating over the list (via `udev_list_entry_get_next`) be the way to workaround the macro? I am using this C example as a reference: <https://github.com/gavv/snippets/blob/master/udev/udev_monitor_usb.c>

main.kt

Tried the iteration method however it doesn't seem to iterate over the list, and the same USB device appears twice.

udev.def

Below is the program's output:
```
&gt; Task :runSerial_reading_demoReleaseExecutableLinux
Starting USB monitor example...
Device Path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-0:1.0
* Device: Action - exists, Vendor - 0000, Product - 0000
Device Path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-0:1.0
* Device: Action - exists, Vendor - 0000, Product - 0000
```

Below is the output from the `lsusb` command:
```
Bus 002 Device 002: ID 0bda:0316 Realtek Semiconductor Corp. 
Bus 002 Device 008: ID 2109:0813 VIA Labs, Inc. 
Bus 002 Device 007: ID 2109:0813 VIA Labs, Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04f2:b604 Chicony Electronics Co., Ltd 
Bus 001 Device 013: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x UART Bridge / myAVR mySmartUSB light
Bus 001 Device 012: ID 2109:2813 VIA Labs, Inc. 
Bus 001 Device 011: ID 2109:2813 VIA Labs, Inc. 
Bus 001 Device 002: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
```

Maybe you use wrong definition of list_entry
In systemd it defined as
```
struct udev_list_entry {
        struct udev_list *list;
        char *name;
        char *value;

        LIST_FIELDS(struct udev_list_entry, entries);
};
```

Was close but forgot to assign the output of `udev_enumerate_get_list_entry` to a property :man-facepalming:. Iterating through the registered devices now looks like this:
```
val devices = udev_enumerate_get_list_entry(enumerate)
        val usbDevices = mutableListOf&lt;UsbDevice&gt;()
        if (devices != null) {
            val tmp = processListEntry(udev, devices)
            if (tmp.vendor.isNotEmpty()) usbDevices += tmp
        }
        var entry = udev_list_entry_get_next(devices)
        while (entry != null) {
            val tmp = processListEntry(udev, entry)
            if (tmp.vendor.isNotEmpty()) usbDevices += tmp
            entry = udev_list_entry_get_next(entry)
        }
        usbDevices.forEach { println("* $it") }
        println("Total USB Devices: ${usbDevices.size}")
```

Have a look at `generateSequence`, you might find it useful here.