(automation/scripting/CI) rvvm external/programmatic input (send input to a running rvvm instance)

[ZLangJIT]

how would i go about sending input to rvvm in a way that is not interactive ?

as i tried printf ... | rvvm ... but it does not seem to work

and rvvm -serial file.txt just results in the serial output being written to the file with nothing actually inputting to the console serial (eg # shell )

might be related to how trying to type stuff before the kernel boots the # shell does not result in anything being sent to the shell (or stuff being partially sent)

for example, for simple automated boot up power down test printf "poweroff\n" | rvvm ...

this would also include sending mouse input to a running rvvm instance, eg to forward mouse events from the host to the guest

[LekKit]

as i tried printf ... | rvvm ... but it does not seem to work

It might have worked, but this input is likely eaten and ignored by the kernel on some earlier boot stages.

Also rvvm -serial expects a path to pipe file, not a usual file. So you actually need to create a pipe file, then try to write into it from script AFTER the guest have booted... Yeah you are better off using in-guest scripts or using librvvm API instead.

librvvm serial device API (you need to implement your own chardev and pass to ns16550a_init():
https://github.com/LekKit/RVVM/blob/staging/src/devices/chardev.h

this would also include sending mouse input to a running rvvm instance, eg to forward mouse events from the host to the guest

librvvm HID API for input devices:
https://github.com/LekKit/RVVM/blob/staging/src/devices/hid_api.h