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Is there some page or document that explains how this actually works from the point of view of a traditional container / UNIX process worldview? Like, have the

by moyix 4y ago

Is there some page or document that explains how this actually works from the point of view of a traditional container / UNIX process worldview? Like, have the WASM folks implemented an emulation layer for Linux system calls? For libc? POSIX? Or maybe you need to modify your traditional programs so that they use WASM APIs instead? Just very confused at the moment :) I get the core idea of compiling other languages to WASM, but at the end of the day they have to talk to the outside world somehow right?

peterhunt 4y ago
I believe this is what WASI is https://github.com/bytecodealliance/wasmtime/blob/main/docs/WASI-intro.md https://github.com/bytecodealliance/wasmtime/blob/main/docs/...
- moyix 4y ago
  Aha! Thanks. :) So it sounds like it's a new capability-based syscall interface, but they've ported big chunks of libc (specifically musl) to that interface so that a lot of things work.
  - peterhunt 4y ago
    Yes, that's my understanding, but I've never actually used it :)