The funny thing is that Linux does have an alternative ioctl-based suspend interface (https://docs.kernel.org/power/userland-swsusp.html https://docs.kernel.org

The funny thing is that Linux does have an alternative ioctl-based suspend interface (https://docs.kernel.org/power/userland-swsusp.html https://docs.kernel.org/power/userland-swsusp.html)... with an incompatible API and different purpose from the string-based one...