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Dan Gohman a679412dd0 Sync with lucet-wasi (#106 )

* Open /dev/null for writing as well as reading.

Port this fix to wasi-common:

b905c44483

* Remove all remaining uses of `std::mem::uninitialized`.

Patch inspired by:

2d6519d051

* Replace libc::memcpy() calls with std::ptr::copy_nonoverlapping()

Port this fix to wasi-common:

a3f3a33e9b

* Pass `WasiError` by value.

It's a `u16` underneath, so we can pass it by value.

* Avoid unnecessary explicit lifetime parameters.

* Use immutable references rather than mutable references.

Patch inspired by:

54baa4c38c

2019-09-30 19:22:11 +02:00

misc_testsuite @ a8b2291b47

Add fd_advise smoke test

2019-09-13 12:19:34 +02:00

src

Sync with lucet-wasi (#106 )

2019-09-30 19:22:11 +02:00

tests

Refactor mgmt of misc testsuite (#101 )

2019-09-16 15:35:14 -07:00

wasi-common-cbindgen

Sync with lucet-wasi (#106 )

2019-09-30 19:22:11 +02:00

winx

Make functions that operate on raw I/O handles unsafe.

2019-09-14 21:46:38 +02:00

.azure-pipelines.yml

Check out submodules in Azure

2019-08-23 20:36:11 -07:00

.gitignore

Add .vscode to .gitignore

2019-09-06 20:38:50 -07:00

.gitmodules

Check out submodules in Azure

2019-08-23 20:36:11 -07:00

.rustfmt.toml

Set up CI, add format and test scripts.

2019-05-08 07:39:54 +02:00

build.rs

Fix path_rename on *nix hosts

2019-09-25 22:20:39 +02:00

Cargo.toml

Refactor mgmt of misc testsuite (#101 )

2019-09-16 15:35:14 -07:00

clippy.toml

Set up CI, add format and test scripts.

2019-05-08 07:39:54 +02:00

CODE_OF_CONDUCT.md

Add contributing guide and code of conduct

2019-05-09 19:02:32 +02:00

CONTRIBUTING.md

Add contributing guide and code of conduct

2019-05-09 19:02:32 +02:00

LICENSE

Extract common interface from lucet-wasi

2019-05-04 18:20:21 +02:00

LICENSE.cloudabi-utils

Eliminate whitespace diffs with upstream LICENSE files.

2019-05-07 09:01:57 +02:00

README.md

Update CI status in README

2019-08-02 11:54:16 +02:00

README.md

wasi-common

This repo 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 1.36.0.

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!

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.