Reproduction of a symlink handling issue in Node.js WASI preview1 implementation

Node.js issue: nodejs/node#49107

Description

This repository contains a reproduction of a symlink handling issue in Node.js WASI preview1 implementation.

Relevant files are structured as follows:

.
├── Cargo.toml
└── dir
    └── link -> ../Cargo.toml

When a WASI program attempts to read dir/link, it fails with error code 76 (notcapable).

Prerequisites

• Cargo
• cargo-wasi (cargo install cargo-wasi)
• Node.js
• Deno (if you want to see expected behavior)

Steps

1. cargo wasi build (generates a WASM binary)
2. ./run-deno-wasi.ts (see expected behavior; requires Deno)
3. ./run-node-wasi.mjs (see Node.js behavior)

Expected behavior

Following should be printed (contents of dir/link is successfully read):

Reading the contents of dir/link
[package]
name = "node-wasi-symlink-bug"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

Actual behavior

Following error is printed:

Reading the contents of dir/link
Error: Os { code: 76, kind: Uncategorized, message: "Capabilities insufficient" }