e18175c556
* Move path_get outside of sys module * Add implementation of readlinkat * Clean up path_open; use OpenOptions as much as possible * Enable close_preopen test * Implement path_create_directory; fix path_open * Refactor path concatenation onto a descriptor * Implement path_remove_directory * Implement path_unlink_file * Rewrite path_open using specific access mask * Fix error mapping when unlinking file * Fix readlinkat to pass nofollow_errors testcase * Clean up winerror to WASI conversion * Spoof creating dangling symlinks on windows (hacky!) * Add positive testcase for readlink * Implement path_readlink (for nonzero buffers for now) * Clean up * Add Symlink struct immitating *nix symlink * Fix path_readlink * Augment interesting_paths testcase with trailing slashes example * Encapsulate path_get return value as PathGet struct * Remove dangling symlink emulation * Extract dangling symlinks into its own testcase This way, we can re-enable nofollow_errors testcase on Windows also. * Return __WASI_ENOTCAPABLE if user lacks perms to symlink
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_recvsock_sendsock_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.