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Dan Gohman d645902620 Add support for wasi_snapshot_preview1. (#592) 
* Add support for wasi_snapshot_preview1.

This adds support for the new ABI, while preserving compatibility
support for the old ABI.

* Fix compilation on platforms where nlink_t isn't 64-bit.

* rustfmt

* Fix Windows build errors.
2019-11-18 22:07:16 -08:00
..
src
Add support for wasi_snapshot_preview1. (#592)
2019-11-18 22:07:16 -08:00
WASI @ 9b298d7911
Add support for wasi_snapshot_preview1. (#592)
2019-11-18 22:07:16 -08:00
wasi-common-cbindgen
Add support for wasi_snapshot_preview1. (#592)
2019-11-18 22:07:16 -08:00
wasi-misc-tests/src/bin
Add test for dangling file/dir handles (#566)
2019-11-15 23:28:50 +01:00
wig
Add support for wasi_snapshot_preview1. (#592)
2019-11-18 22:07:16 -08:00
winx
Update the crates.io publishing scripts (#580)
2019-11-15 12:17:19 -08:00
Cargo.toml
Update the crates.io publishing scripts (#580)
2019-11-15 12:17:19 -08:00
LICENSE
Initial reorg.
2019-11-08 06:35:40 -08:00
LICENSE.cloudabi-utils
Initial reorg.
2019-11-08 06:35:40 -08:00
README.md
Add badges to wasi-common crate's README (#588)
2019-11-18 14:36:24 -08:00

README.md

wasi-common

A Bytecode Alliance project

A library providing a common implementation of WASI hostcalls for re-use in any WASI-enabled runtime.

Crates.io version Download docs.rs docs

The wasi-common crate will ultimately serve as a library providing a common implementation of WASI hostcalls for re-use in any WASI (and potentially non-WASI) runtimes such as Wasmtime and Lucet.

The library is an adaption of lucet-wasi crate from the Lucet project, and it is currently based on 40ae1df git revision.

Please note that the library requires Rust compiler version at least 1.37.0.

Supported syscalls

*nix

In our *nix implementation, we currently support the entire WASI API with the exception of socket hostcalls:

  • sock_recv
  • sock_send
  • sock_shutdown

We expect these to be implemented when network access is standardised.

We also currently do not support the proc_raise hostcall, as it is expected to be dropped entirely from WASI.

Windows

In our Windows implementation, we currently support the minimal subset of WASI API which allows for running the very basic "Hello world!" style WASM apps. More coming shortly, so stay tuned!

Development hints

When testing the crate, you may want to enable and run full wasm32 integration testsuite. This requires wasm32-wasi target installed which can be done as follows using rustup

rustup target add wasm32-wasi

Now, you should be able to run the integration testsuite by running cargo test on the test-programs package:

cargo test --package test-programs

Third-Party Code

Significant parts of our hostcall implementations are derived from the C implementations in cloudabi-utils. See LICENSE.cloudabi-utils for license information.