OpenBSD disabled TIOCSTI in 2017 (https://marc.info/?l=openbsd-tech&m=149866235528186 https://marc.info/?l=openbsd-tech&m=149866235528186) and then removed the

OpenBSD disabled TIOCSTI in 2017 (https://marc.info/?l=openbsd-tech&m=149866235528186 https://marc.info/?l=openbsd-tech&m=149866235528186) and then removed the #define entirely in 2018 (see rev 1.17 at https://cvsweb.openbsd.org/src/sys/sys/ttycom.h https://cvsweb.openbsd.org/src/sys/sys/ttycom.h) after addressing ports issues. Not an OpenBSD boast; just pointing out that OpenBSD already dealt with the fallout from its use in common open source projects. It's also been disabled in Android, apparently, so that would've also brought its unavailability to the attention of many Linux-specific open source projects. The concern, now, would presumably largely just be any proprietary Linux software floating around that makes use of it.