[oguz-ismail2]

> How does that work, with syscalls being unable to be called except from the system’s libc?

OpenBSD allows system calls being made from shared libraries whose names start with `libc.so.' and all static binaries, as long as they include an `openbsd.syscalls' section listing call sites.

[GoblinSlayer]

Can't you just have one syscall(2) to rule them all? https://man7.org/linux/man-pages/man2/syscall.2.html

[oguz-ismail2]

You can. There is a thread-unsafe implementation here <https://gist.github.com/oguz-ismail/72e34550af13e3841ed58e29...>. But the listing needs to be per system call number, so this one only supports system calls 1 (_exit) and 4 (write). It should be fairly easy to automatically generate the complete list but I didn't try it.