[Tinker Board 3/3S Debian 11 V1.0.7 OS] How to Disable ADB

[Toru 0]

Hello,
I would like to ask how to properly disable ADB on TinkerOS.

I am using a Tinker Board 3S with TinkerOS (Debian 11 V1.0.7).
For security reasons, I want to prevent ADB from automatically starting when a USB device is connected, since this device will be used to run a custom application in a production environment.

At the moment, I am disabling ADB by manually removing the ADB function from the USB gadget configuration:

sudo rm /sys/kernel/config/usb_gadget/asus/configs/b.1/f-ffs.adb
sudo rmdir /sys/kernel/config/usb_gadget/asus/functions/ffs.adb

I also commented out the ADB-related sections inside /usr/bin/usbdevice (lines 260–272):

# /usr/bin/usbdevice
adb_prepare()
{
        # usb_mount adb /dev/usb-ffs/adb -o uid=2000,gid=2000 -t functionfs
        # usb_start_daemon /usr/bin/adbd
        # usb_wait_files -m /dev/usb-ffs/adb
}

adb_stop()
{
        # usb_stop_daemon /usr/bin/adbd
}

Are there any concerns or drawbacks with disabling ADB in this way?
Is there an official or recommended method to disable ADB in TinkerOS?

Any advice would be greatly appreciated.

[TzuWen_Chang 2]

Hi Toru,

You can stop the usbdevice.service directly. Please use the following command:

sudo systemctl disable usbdevice.service

BRs,

TzuWen

[Toru 0]

Hi TzuWen,

Thank you for the information.

I disabled usbdevice.service as you suggested, and I have confirmed that the service was successfully stopped.
This resolved my issue.

Thanks again for your support.

Best regards,