cc4be18119
This commit uses the `*.witx` files describing the current wasi API to reduce the boilerplate used to define implementations in the `wasmtime-wasi` crate. Eventually I'd like to remove lots of boilerplate in the `wasi-common` crate too, but this should at least be a good start! The boilerplate removed here is: * No need to list each function to add it to the `wasmtime_runtime::Module` being created * No need to list the signature of the function in a separate `syscalls.rs` file. Instead the `*.witx` file is processed in a single-use macro inside the `wasmtime-wasi` crate. This macro uses the signatures known from `*.witx` to automatically register with the right type in the wasm module as well as define a wrapper that the wasm module will call into. Functionally this is all the same as before, it's just defined in a different way now! The shim generated by this macro which wasmtime calls into only uses `i32`/`i64`/etc wasm types, and it internally uses `as` casts to convert to the right wasi types when delegating into the `wasi-common` crate. One change was necessary to get this implemented, however. The functions in `wasi-common` sometimes took `WasiCtx` and sometimes took a slice of memory. After this PR they uniformly all require both `WasiCtx` and memory so the wrappers can be auto-generated. The arguments are ignored if they weren't previously required.
264 lines
7.9 KiB
Rust
264 lines
7.9 KiB
Rust
#![allow(non_camel_case_types)]
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use crate::ctx::WasiCtx;
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use crate::{hostcalls_impl, wasi, wasi32};
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hostcalls! {
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pub unsafe fn fd_close(wasi_ctx: &mut WasiCtx, memory: &mut [u8], fd: wasi::__wasi_fd_t,) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_datasync(wasi_ctx: &WasiCtx, memory: &mut [u8], fd: wasi::__wasi_fd_t,) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_pread(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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iovs_ptr: wasi32::uintptr_t,
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iovs_len: wasi32::size_t,
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offset: wasi::__wasi_filesize_t,
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nread: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_pwrite(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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iovs_ptr: wasi32::uintptr_t,
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iovs_len: wasi32::size_t,
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offset: wasi::__wasi_filesize_t,
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nwritten: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_read(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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iovs_ptr: wasi32::uintptr_t,
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iovs_len: wasi32::size_t,
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nread: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_renumber(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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from: wasi::__wasi_fd_t,
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to: wasi::__wasi_fd_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_seek(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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offset: wasi::__wasi_filedelta_t,
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whence: wasi::__wasi_whence_t,
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newoffset: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_tell(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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newoffset: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_fdstat_get(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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fdstat_ptr: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_fdstat_set_flags(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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fdflags: wasi::__wasi_fdflags_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_fdstat_set_rights(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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fs_rights_base: wasi::__wasi_rights_t,
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fs_rights_inheriting: wasi::__wasi_rights_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_sync(wasi_ctx: &WasiCtx, memory: &mut [u8], fd: wasi::__wasi_fd_t,) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_write(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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iovs_ptr: wasi32::uintptr_t,
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iovs_len: wasi32::size_t,
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nwritten: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_advise(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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offset: wasi::__wasi_filesize_t,
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len: wasi::__wasi_filesize_t,
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advice: wasi::__wasi_advice_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_allocate(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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offset: wasi::__wasi_filesize_t,
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len: wasi::__wasi_filesize_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_create_directory(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_link(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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old_dirfd: wasi::__wasi_fd_t,
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old_flags: wasi::__wasi_lookupflags_t,
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old_path_ptr: wasi32::uintptr_t,
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old_path_len: wasi32::size_t,
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new_dirfd: wasi::__wasi_fd_t,
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new_path_ptr: wasi32::uintptr_t,
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new_path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_open(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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dirflags: wasi::__wasi_lookupflags_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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oflags: wasi::__wasi_oflags_t,
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fs_rights_base: wasi::__wasi_rights_t,
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fs_rights_inheriting: wasi::__wasi_rights_t,
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fs_flags: wasi::__wasi_fdflags_t,
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fd_out_ptr: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_readdir(
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wasi_ctx: &mut WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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buf: wasi32::uintptr_t,
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buf_len: wasi32::size_t,
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cookie: wasi::__wasi_dircookie_t,
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buf_used: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_readlink(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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buf_ptr: wasi32::uintptr_t,
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buf_len: wasi32::size_t,
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buf_used: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_rename(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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old_dirfd: wasi::__wasi_fd_t,
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old_path_ptr: wasi32::uintptr_t,
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old_path_len: wasi32::size_t,
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new_dirfd: wasi::__wasi_fd_t,
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new_path_ptr: wasi32::uintptr_t,
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new_path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_filestat_get(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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filestat_ptr: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_filestat_set_times(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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st_atim: wasi::__wasi_timestamp_t,
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st_mtim: wasi::__wasi_timestamp_t,
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fst_flags: wasi::__wasi_fstflags_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_filestat_set_size(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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st_size: wasi::__wasi_filesize_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_filestat_get(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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dirflags: wasi::__wasi_lookupflags_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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filestat_ptr: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_filestat_set_times(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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dirflags: wasi::__wasi_lookupflags_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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st_atim: wasi::__wasi_timestamp_t,
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st_mtim: wasi::__wasi_timestamp_t,
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fst_flags: wasi::__wasi_fstflags_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_symlink(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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old_path_ptr: wasi32::uintptr_t,
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old_path_len: wasi32::size_t,
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dirfd: wasi::__wasi_fd_t,
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new_path_ptr: wasi32::uintptr_t,
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new_path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_unlink_file(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn path_remove_directory(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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dirfd: wasi::__wasi_fd_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_prestat_get(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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prestat_ptr: wasi32::uintptr_t,
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) -> wasi::__wasi_errno_t;
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pub unsafe fn fd_prestat_dir_name(
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wasi_ctx: &WasiCtx,
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memory: &mut [u8],
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fd: wasi::__wasi_fd_t,
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path_ptr: wasi32::uintptr_t,
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path_len: wasi32::size_t,
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) -> wasi::__wasi_errno_t;
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}
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