Thoughts about adding `mkfifoat`

[rusty-snake]

Thoughts about adding mkfifoat

[sunfishcode]

Rustix does have mknodat, so mkfifoat can be done today using mknodat(dir, path, FileType::Fifo, mode, 0).

That said, it looks like POSIX recommends using mkfifoat instead, so I'm not opposed to adding a mkfifoat to rustix as well.

[rusty-snake]

Yeah, mkfifoat is nothing more than mknodat but more readable and less error prone.

so I'm not opposed to adding a mkfifoat to rustix as well.

I'll give it a try.