Checking for AB Partition Slot Support

Checking for AB Partition Slot Support fastboot get active slot But I want without fastboot command My usecase is the bootloader need to check the currect active slot and set the proper suffix How can I do fastboot_ error_ failed to identify current slot being installed to the opposite partition than you're currently on So active and you can

fastboot_ error_ failed to identify current slot Get active system slot fastboot getvar current-slot fastboot getvar all Get active system slot

fastboot get active slot If you are looking to get this job done via Fastboot Commands, then Slots If the bootloader implements fastboot, it should support the command set_active slot> that sets the current active slot to the given slot (this