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Try to use UI_GET_VERSION ioctl to check whether to fall back to old uinput interface (for kernels < 4.5) as described in [1] and [2]. [1]: kernel.org/doc/html/latest/input/uinput.html#uinput-old-interface [2]: github.com/torvalds/linux/blob/master/include/uapi/linux/uinput.h
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This makes ydotool work on very old kernels (older than 4.5, which was released in March 2016), where it previously did not work because the
UI_DEV_SETUPioctlis not available.Try to use
UI_GET_VERSIONioctl(introduced in kernel 3.17, released in October 2014) to check whether to fall back to old uinput interface as described in https://kernel.org/doc/html/latest/input/uinput.html#uinput-old-interface and https://github.com/torvalds/linux/blob/master/include/uapi/linux/uinput.h#L89.If
UI_GET_VERSIONfails, also try to use the old interface.Tested on 6.11.3 and 4.4.153 (where it doesn't work without this patch).