9ee613a0b7
* wasi-common: remove allocate from WasiFile trait, always fail with NOTSUP This operation from cloudabi is linux-specific, isn't even supported across all linux filesystems, and has no support on macos or windows. Rather than ship spotty support, it has been removed from preview 2, and we are no longer supporting it in preview 1 as well. The preview 1 implementation will still check if fd is a file, and has rights, just to reject those cases with the errors expected. * wasi-tests: expect fd_allocate to always fail now. rewrite the file_allocate test to just check for failure. remove use of fd_allocate from fd_advise test, and remove test configuration setting used for excluding use of fd_allocate on macos and windows.
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 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/test_programs feature enabled:
cargo test --features test-programs/test_programs --package test-programs