POSIX/Unix interface for Mono, .NET and .NET Core. Provides functionality for managed code to access POSIX/Unix features not accessible via the BCL. This repository supersedes the older code in https://github.com/mono/mono
is missing from `Syscall` despite a section being called out for it:
https://github.com/mono/mono.posix/blob/56943785fc49f1227001d0081dc6d62368b334f2/src/Mono.Unix/Mono.Unix.Native/Syscall.cs#L4428-L4430