pledge(2)

Javascript:

node-pledge

Perl:

by Andrew Fresh (mirror)

by rfarr

Python

https://github.com/jarmani/py-openbsd-pledge

Lua

https://github.com/n0la/lua-openbsd

Haskell

http://openbsd-archive.7691.n7.nabble.com/pledge-2-binding-for-Haskell-td287889.html

golang

https://github.com/ylih/extrasys

c#

https://github.com/NattyNarwhal/pledge.cs

Rust

I guess the included file is gone?