Wasix is unable to map the current directory using `WasiStateBuilder::map_dir()`

[Michael-F-Bryan]

Describe the bug

In the wasix branch (d34ce882e5e90ef500b51a2caacd5939e3397c82), the WasiStateBuilder::map_dir() function is unable to map the current directory on the host to the . directory on the guest.

Steps to reproduce

I am attempting to map directories like this:

    let current_dir = std::env::current_dir()?;

    let mut env = WasiState::new(program_name)
        .stdin(Box::new(stdin))
        .env("PATH_INFO", path)
        .env("REQUEST_METHOD", "GET")
        .env("QUERY_STRING", "")
        .env("SCRIPT_NAME", "asd")
        .env("SERVER_PROTOCOL", "HTTP/1.1")
        .map_dir(".", current_dir)?
        .finalize(&mut store)
        .context("Unable to instantiate the WASI state")?;

It looks like the finalize() call fails because we aren't able to get metadata for the current directory (which the error message refers to as a "file") because an "entry" wasn't found.

$ RUST_LOG=info,wasmer_wasi=debug,cgi_runner=debug cargo run -- ./no_socket_accept.wasm
   Compiling cgi-runner v0.1.0 (/Users/work/Documents/wasmer/happiness-for-success/crates/cgi-runner)
    Finished dev [unoptimized + debuginfo] target(s) in 1.94s
     Running `/Users/work/Documents/wasmer/happiness-for-success/target/debug/cgi-runner ./no_socket_accept.wasm`
2023-01-10T23:59:37.869626Z  INFO cgi_runner: Starting input=./no_socket_accept.wasm
2023-01-10T23:59:40.037270Z  INFO cgi_runner: Compiled
2023-01-10T23:59:40.039497Z DEBUG wasmer_wasi::fs: Initializing WASI filesystem
2023-01-10T23:59:40.039903Z DEBUG wasmer_wasi::fs: Attempting to preopen /Users/work/Documents/wasmer/happiness-for-success/crates/cgi-runner with alias Some(".")
Error: Unable to instantiate the WASI state

Caused by:
    wasi filesystem creation error: `Could not get metadata for file "/Users/work/Documents/wasmer/happiness-for-success/crates/cgi-runner": entry not found`

Where no_socket_accept.wasm comes from this archive: inputs.zip

Expected behavior

The directory should be mapped into the WASIX container.

[Cactice]

Is there any workaround for this issue? I want to read a file from wasm but I have no idea how to provide the file to wasm.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.