Files

Dan Gohman 1d810a5de9 Initial support for securing tty I/O. (#684 )

* Initial support for securing tty I/O.

* Update the tests.

* Fix warnings

* Update crates/wasi-common/src/fdentry.rs

Co-Authored-By: Jakub Konka <jakub.konka@golem.network>

* Properly sandbox stderr.

* Document why the scratch buffer is 4 elements long.

* Update crates/wasi-common/src/sandboxed_tty_writer.rs

Co-Authored-By: Jakub Konka <jakub.konka@golem.network>

* Update crates/wasi-common/src/sandboxed_tty_writer.rs

Co-Authored-By: Jakub Konka <jakub.konka@golem.network>

* Add comments explaining how we report the number of bytes written.

* Always sanitize stderr.

* Port the changes to the snapshot_0 directory.

* Fix snapshot_0 compilation error.

* Replace the scratch buffer with a temporary buffer.

* Update crates/wasi-common/src/sandboxed_tty_writer.rs

Co-Authored-By: bjorn3 <bjorn3@users.noreply.github.com>

* Format with latest stable rustfmt.

Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>
Co-authored-by: bjorn3 <bjorn3@users.noreply.github.com>

2020-01-02 11:53:26 +01:00

src

Initial support for securing tty I/O. (#684 )

2020-01-02 11:53:26 +01:00

WASI @ 9150e66a34

wig: update to latest witx

2019-12-04 17:16:29 -08:00

wasi-common-cbindgen

Fix wasi-common-cbindgen missing no_mangle attr

2019-12-16 10:51:39 +01:00

wig

Reduce boilerplate in wasmtime-wasi (#707 )

2019-12-16 16:37:20 -06:00

winx

Implement __wasi_fd_fdstat_get for Windows.

2019-11-26 22:24:12 +01:00

yanix

Misc yanix fixes (#715 )

2019-12-16 13:34:22 -08:00

Cargo.toml

Add yanix crate and replace nix with yanix in wasi-common (#649 )

2019-12-08 16:40:05 -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

Fix feature-gating of test-programs (#612 )

2019-11-21 13:52:15 +01:00

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.

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 with test_programs feature enabled:

cargo test --features test_programs --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.